WO2006033395A1 - 生体組織採取装置 - Google Patents
生体組織採取装置 Download PDFInfo
- Publication number
- WO2006033395A1 WO2006033395A1 PCT/JP2005/017491 JP2005017491W WO2006033395A1 WO 2006033395 A1 WO2006033395 A1 WO 2006033395A1 JP 2005017491 W JP2005017491 W JP 2005017491W WO 2006033395 A1 WO2006033395 A1 WO 2006033395A1
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- WIPO (PCT)
- Prior art keywords
- air supply
- blood vessel
- insertion portion
- harvester
- tissue collection
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00008—Vein tendon strippers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3474—Insufflating needles, e.g. Veress needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00353—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery one mechanical instrument performing multiple functions, e.g. cutting and grasping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00778—Operations on blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00902—Material properties transparent or translucent
- A61B2017/00907—Material properties transparent or translucent for light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B2017/3445—Cannulas used as instrument channel for multiple instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
- A61B2017/3482—Means for supporting the trocar against the body or retaining the trocar inside the body inside
- A61B2017/349—Trocar with thread on outside
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
- A61B2017/3492—Means for supporting the trocar against the body or retaining the trocar inside the body against the outside of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/16—Indifferent or passive electrodes for grounding
- A61B2018/162—Indifferent or passive electrodes for grounding located on the probe body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/032—Automatic limiting or abutting means, e.g. for safety pressure limiting, e.g. hydrostatic
Definitions
- the present invention relates to a biological tissue collection device for collecting biological tissue such as blood vessels under the skin.
- a blood vessel under the skin such as a great saphenous vein may be used as a bypass blood vessel.
- surgery was performed to cut the skin of the lower limb and remove the blood vessel under the skin so that all blood vessels could be seen from the groin area of the lower limb to the ankle.
- an operation for pulling a blood vessel under the skin such as the great saphenous vein under an endoscope has been performed.
- Surgical instruments used in such endoscopic surgery include, for example, instruments disclosed in US Pat. No. 5,895,353 and JP-A-2004-008241.
- This surgical instrument is composed of instrument forces such as a dissector and a harvester.
- An endoscope can be inserted into the dissector and the nose vesta, and the operator can collect blood vessels while viewing the endoscopic image.
- the dissector is inserted by the trolling force, which is a guide tube set in the incision near the patient's knee, and is inserted over the entire length of the blood vessel to be collected, thereby gradually removing the blood vessel and the surrounding tissue. It is an instrument for peeling.
- the harvester is a device having a bipolar cutter for electrically cutting a side branch of a blood vessel peeled off by the dissector from the surrounding tissue force.
- the present invention has been made in view of the above points, and there is provided a biological tissue collection device that prevents the pressure in a body cavity from rising above a predetermined pressure even in a device for collecting biological tissue.
- the purpose is to provide.
- the biological tissue collection device of the present invention is a biological tissue collection device having a gripping part and a tubular insertion part connected to the gripping part and inserted into a body cavity, from an external air supply device An air supply path for supplying a predetermined gas into the insertion part, and a first opening provided in the insertion part, through which the predetermined gas of the air supply path force is exhausted And a communication path provided in the insertion portion and communicating with the outside via the grip portion. According to the biological tissue collection device of the present invention, the pressure in the body cavity can be prevented from rising more than a predetermined pressure.
- FIG. 1 is a configuration diagram showing a configuration of a surgical operation system according to a first embodiment of the present invention.
- FIG. 2 is a perspective view of a trolling force according to the first embodiment of the present invention.
- FIG. 3 is a longitudinal sectional view of a trolling force according to the first embodiment of the present invention.
- FIG. 4 is a flowchart for explaining a surgical method of pulling and collecting a blood vessel under the skin.
- FIG. 5 is a diagram for explaining a surgical method of collecting by pulling a blood vessel under the skin.
- FIG. 6 is a cross-sectional view showing a state where a dissector is inserted into the lower limbs subcutaneously through the trocar according to the first embodiment of the present invention.
- FIG. 7 is a diagram for explaining a surgical method of pulling and collecting a blood vessel under the skin.
- FIG. 8 is a cross-sectional view showing a state where the harvester is inserted into the lower limb subcutaneously through the trocar from the skin incision.
- FIG. 9 is a diagram for explaining a surgical method of collecting by pulling a blood vessel under the skin.
- FIG. 10 is a side view of the dissector according to the first embodiment of the present invention.
- FIG. 11 is a partial cross-sectional view of a disector according to the first embodiment of the present invention.
- FIG. 12 is a sectional view taken along line AA in FIG.
- FIG. 13 is a cross-sectional view taken along line BB in FIG.
- FIG. 14 is a sectional view taken along line CC in FIG. 11.
- FIG. 15 is a partial perspective view seen from the proximal end side of the disector according to the first embodiment of the present invention.
- ⁇ 16] A partial cross-sectional view of the distal end portion of the grip portion according to the first embodiment of the present invention.
- FIG. 17 is a perspective view of a harvester according to the first embodiment of the present invention.
- FIG. 18 is a partial perspective view illustrating the configuration of the proximal end side of the harvester according to the first embodiment of the present invention.
- FIG. 19 is a partial perspective view showing the configuration of the tip of the harvester according to the first embodiment of the present invention.
- FIG. 20 is a diagram for explaining the operation of the lock shaft of FIG.
- FIG. 21 is an arrow view seen from arrow A in FIG.
- ⁇ 22 A longitudinal sectional view showing the operation configuration of the harvester according to the first embodiment of the present invention.
- FIG. 23 is a conceptual diagram of the attachment of the vane keeper lever as seen from the arrow B in FIG.
- FIG. 24 is a cross-sectional view in the major axis direction showing the air supply configuration of the harvester according to the first embodiment of the present invention.
- 25 is a cross-sectional view showing a cross section along line D-D in FIG.
- FIG. 26 is a first diagram illustrating the operation of the harvester's vane keeper according to the first embodiment of the present invention.
- FIG. 27 is a second diagram for explaining the operation of the harvester's vane keeper according to the first embodiment of the present invention.
- FIG. 28 is a third diagram for explaining the operation of the harvester's vane keeper according to the first embodiment of the present invention.
- FIG. 29 is a view seen from the upper surface of the front end portion of the bipolar cutter according to the first embodiment of the present invention.
- FIG. 30 is a cross-sectional view showing a cross section of the bipolar cutter in FIG. 29.
- FIG. 30 is a cross-sectional view showing a cross section of the bipolar cutter in FIG. 29.
- FIG. 31 is an exploded perspective view of a tip portion of a bipolar cutter as a modification.
- FIG. 32 is a top view of the bipolar cutter according to the first embodiment of the present invention when the upper surface force is seen.
- FIG. 33 is a bottom view of the bipolar cutter according to the first embodiment of the present invention when the bottom force is seen. It is.
- FIG. 34 is a cross-sectional view of the bipolar cutter showing a cross section taken along line E-E of the bipolar cutter in FIG. 32.
- FIG. 35 is a sectional view of the bipolar cutter showing the section of the bipolar cutter of FIG. 32 taken along the line F—F.
- FIG. 36 is a view of the tissue clamping portion according to the first embodiment of the present invention when the lower surface force is also seen.
- FIG. 37 is a cross-sectional view of the tissue sandwiching section showing a cross section taken along line GG in FIG. 36.
- FIG. 38 is a cross-sectional view of the tissue sandwiching section showing a cross section taken along the line HH of FIG. 36.
- FIG. 39 is a view for explaining cutting of the side branch by the bipolar cutter according to the first embodiment of the present invention.
- FIG. 40 is a diagram for explaining cutting of the side branch by the bipolar cutter according to the first embodiment of the present invention.
- FIG. 41 is a view of the tissue clamping portion when the side branch is cut, as seen from the lower surface force.
- FIG. 42 is a diagram showing an appearance of a disposable dissector according to the first embodiment of the present invention.
- FIG. 43 is a diagram showing an external appearance of a disposable harvester according to the first embodiment of the present invention.
- FIG. 44 is a partial cross-sectional view of the distal end portion of the insertion portion according to the second embodiment of the present invention.
- FIG. 45 is a partial cross-sectional view of the distal end portion of the grip portion according to the second embodiment of the present invention.
- FIG. 46 is a diagram for explaining the position of the opening of each hole in the insertion portion according to the second embodiment of the present invention.
- FIG. 47 is a partial sectional view of a disector according to a third embodiment of the present invention.
- FIG. 1 is a configuration diagram showing a configuration of a surgical system.
- Figure 2 is a perspective view of the trolling force.
- Fig. 3 is a longitudinal sectional view of the trolling force.
- FIG. 4 is a flowchart for explaining a surgical method for collecting blood by pulling a blood vessel under the skin.
- FIG. 5 is a diagram for explaining a surgical method of collecting by pulling a blood vessel under the skin.
- FIG. 6 is a cross-sectional view showing a state where the die sector is inserted into the lower limbs subcutaneously through the trocar.
- FIG. 7 is a diagram for explaining a surgical method of collecting by pulling a blood vessel under the skin.
- FIG. 1 is a configuration diagram showing a configuration of a surgical system.
- Figure 2 is a perspective view of the trolling force.
- Fig. 3 is a longitudinal sectional view of the trolling force.
- FIG. 4 is a flowchart for explaining a surgical method for collecting blood by pulling a blood vessel
- FIG. 8 is a cross-sectional view showing a state where the harvester has been inserted into the lower limb subcutaneously through the trocar from the skin incision.
- FIG. 9 is a diagram for explaining a surgical method of pulling and collecting a blood vessel under the skin.
- Figure 10 is a side view of the dissector.
- FIG. 11 is a partial sectional view of the dissector.
- FIG. 12 is a cross-sectional view taken along line AA in FIG.
- FIG. 13 is a cross-sectional view along the line BB in FIG.
- FIG. 14 is a cross-sectional view taken along the line CC in FIG.
- FIG. 15 is a partial perspective view showing the proximal side force of the dissector.
- FIG. 10 is a side view of the dissector.
- FIG. 11 is a partial sectional view of the dissector.
- FIG. 12 is a cross-sectional view taken along line AA in FIG.
- FIG. 16 is a partial cross-sectional view of the distal end portion of the grip portion.
- FIG. 17 is a perspective view of the harvester.
- FIG. 18 is a partial perspective view illustrating the configuration of the proximal end side of the harvester.
- FIG. 19 is a partial perspective view showing the configuration of the tip of the harvester.
- FIG. 20 is a diagram for explaining the operation of the lock shaft of FIG.
- FIG. 21 is a view seen from the arrow A in FIG.
- FIG. 22 is a cross-sectional view in the major axis direction showing the operating configuration of the harvester.
- FIG. 23 is a conceptual view of the attachment of the vane keeper lever as seen from the arrow B in FIG.
- FIG. 24 is a cross-sectional view in the major axis direction showing the air supply configuration of the harvester.
- 25 is a cross-sectional view showing a cross section along the line DD in FIG.
- FIG. 26 is a first diagram for explaining the action of the harvester's bell-inkper.
- FIG. 27 is a second diagram illustrating the operation of the harvester's vein keeper.
- FIG. 28 is a third diagram illustrating the operation of the harvester's vein keeper.
- FIG. 29 is a top view of the bipolar cutter.
- FIG. 30 is a sectional view showing a section of the bipolar cutter of FIG.
- FIG. 31 is an exploded perspective view of the tip portion of a bipolar force cutter as a modification.
- FIG. 32 is a top view of a modified bipolar cutter as viewed from above.
- FIG. 33 is a bottom view of the modified bipolar cutter as seen from the bottom surface.
- FIG. 34 is a cross-sectional view of the bipolar cutter showing a cross section taken along line E-E of the bipolar cutter of FIG.
- FIG. 35 is a cross-sectional view of the bipolar cutter showing a cross section of the bipolar cutter of FIG. 32 taken along the line FF.
- FIG. 36 is a view of the tissue sandwiching portion as seen from the lower surface.
- Fig. 37 shows Fig. 3.
- FIG. 6 is a cross-sectional view of a tissue sandwiching section showing a GG line cross section of 6; 38 is a cross-sectional view of the tissue sandwiching section showing the HH line cross section of FIG.
- FIG. 39 is a diagram for explaining the side branch cutting by the bipolar cutter according to the modification.
- FIG. 40 is a view for explaining the cutting of the side branch by the bipolar cutter as a modification.
- FIG. 41 is a view of the tissue clamping part when the side branch is cut, as viewed from the lower surface.
- FIG. 42 is a diagram showing the appearance of a disposable dissector.
- FIG. 43 is a diagram showing the appearance of a day-sportable harvester.
- a living body collection surgery system (hereinafter sometimes referred to simply as a surgery system) 101 includes a trocar 21, a dissector 31, a harvester 41, and a rigid endoscope 5 that is an endoscope.
- a surgery system includes a trocar 21, a dissector 31, a harvester 41, and a rigid endoscope 5 that is an endoscope.
- Dissector 31 and harvester 41 are biological tissue collection devices.
- the surgical system 101 further includes a television monitor 102 as a display device, a camera control unit (hereinafter referred to as CCU) 103, a television camera device 104, a light source device 105, a light guide cable 106, and an electric knife device 107. And an air supply device 108.
- CCU camera control unit
- One end of a light guide cable 106 is connected to the light guide connector portion 52 of the rigid endoscope 51.
- the other end of the ride guide cable 106 is connected to the light source device 105.
- Light from the light source device 105 is supplied to the rigid endoscope 51 through a light guide cable 106 through which an optical fiber light guide is inserted, and the subject is illuminated from the distal end of the rigid endoscope 51. Is done.
- the television camera head portion of the television camera device 104 is connected to the eyepiece 53 on the proximal end side of the rigid endoscope 51.
- the TV camera device 104 is connected to the CCU 103 and displayed on the screen of the TV monitor 102 connected to the image power of the subject obtained by the rigid endoscope 51.
- the distal end insertion portion 54 of the rigid endoscope 51 can be inserted into the rigid endoscope insertion channel 36 of the disector 31 from the proximal end side of the disector 31 as a biological tissue collection device.
- the distal end insertion portion 54 of the rigid endoscope 51 can be inserted into the rigid endoscope insertion channel 46 of the harvester 41 as well as the proximal end side of the harvester 41 as a biological tissue collection device. it can .
- the rigid endoscope insertion channels 36 and 46 are connected to the insertion part of the dissector 31 and the harvest, respectively. This is an attachment portion for attaching the rigid endoscope 51 to the insertion portion of the recorder 41, and constitutes an endoscope insertion means.
- the air supply tube 34 of the dissector 31 is connected to the air supply device 108, receives supply of a predetermined gas from the air supply device 108, for example, carbon dioxide gas, and serves as an air supply outlet of the insertion portion. It is discharged from the opening 35a (FIG. 1 is not shown).
- a predetermined gas for example, carbon dioxide gas
- the air supply tube 44 of the harvester 41 is also connected to the air supply device 108, and is supplied with a predetermined gas, for example, carbon dioxide gas from the air supply device 108, and receives an air supply outlet of the insertion portion. It is discharged from the opening (Fig. 1 is not shown).
- the air supply tubes 34 and 44 constitute an air supply means for supplying carbon dioxide gas inside the insertion portion of the dissector 31 and the insertion portion of the harvester 41, respectively.
- the harvester 41 also has an electrical cable 47 for a bipolar cutter 43 (not shown in FIG. 1).
- the harvester 41 is connected to the electric knife device 107 by a connector provided at the proximal end of the electric cable 47.
- the surgeon can perform an operation of pulling and collecting a subcutaneous blood vessel as a biological tissue to be collected, as will be described later.
- the First dissect tissue around the large saphenous vein (hereinafter also simply referred to as blood vessel) from the thigh of the lower limb to the ankle using dissector 31, and then use harvester 41 to remove the blood vessel. Cut the surrounding side branch. After such a treatment is performed, the distal end of the blood vessel is treated, and the blood vessel is removed. As described above, the biological tissue is collected under the endoscope.
- blood vessel large saphenous vein
- the trocar 21 includes a guide tube portion 22 that is a guide sheath, a seal member 23, and a fixing portion 24 for fixing to the skin.
- the guide tube portion 22 has a cylindrical hollow portion 25 through which the die sector 31 and the insertion portions 32 and 42 of the harvester 41 are inserted.
- the distal end side of the guide tube portion 22 has a shape that is cut at a predetermined angle, for example, an angle of 45 degrees with respect to a direction orthogonal to the axial direction of the guide tube portion 22.
- the proximal end side of the guide tube portion 22 has a shape cut in a direction orthogonal to the axial direction of the guide tube portion 22.
- a seal member 23 is provided on the proximal end side of the guide tube portion 22.
- the seal member 23 is made of an elastic member and has a hole 26 having an inner diameter smaller than the inner diameter of the guide tube portion 22.
- a convex portion 27 is provided on the distal end side so that the inner diameter on the distal end side is smaller than the inner diameter on the proximal end side.
- a clip member 29 using the elastic force of the torsion panel 28, which is an elastic member, is provided on the outer periphery of the guide tube portion 22 of the trocar 21, a clip member 29 using the elastic force of the torsion panel 28, which is an elastic member, is provided.
- the clip member 29 has a plate shape that is bent into a shape consisting of a distal end portion 29a and a proximal end portion 29b.
- a torsion panel 28 is provided approximately in the middle of the plate shape that is bent in a U-shape.
- the tip end portion 29 a of the clip member 29 is always pressed against the outer peripheral surface of the guide tube portion 22.
- the distal end portion 29a can also release the outer peripheral surface force of the guide tube portion 22. Therefore, while pushing down the base end portion 29b of the clip member 29 toward the outer peripheral surface side of the planned inner tube portion 22, the skin of the lower limb 12 or the like is interposed between the distal end portion 29a of the clip member 29 and the outer peripheral surface of the guide tube portion 22. Can be pinched (see Fig. 6 and Fig. 8).
- a plurality of circular round and convex portions 22a are provided in an annular shape.
- the convex portion 22a may be provided by being molded integrally with the guide tube portion 22, or may be provided by a separate member from the guide tube portion 22.
- a locking portion 29c is formed on the outer peripheral surface side of the guide tube portion 22 of the distal end portion 29a of the clip member 29. Therefore, as shown in FIGS. 6 and 8, the skin of the lower limb 12 is sandwiched between the distal end portion 29a of the clip member 29 and the outer peripheral surface of the guide tube portion 22 by the pressing force of the torsion panel 28.
- the skin or the like of the lower limb 12 is fixed in a state of being firmly sandwiched between the locking portion 29c of the clip member 29 and the outer peripheral surface of the guide tube portion 22. Accordingly, the locking portion 29c of the guide tube portion 22 and the convex portion 22a of the guide tube portion 22 constitute a fixed portion 24 having a so-called anti-slip mechanism.
- the surgical system 101 configured as described above can collect a blood vessel, which is a tissue to be collected of the lower limb, used in a bypass operation of the heart.
- a blood vessel which is a tissue to be collected of the lower limb, used in a bypass operation of the heart.
- a large saphenous vein hereinafter also simply referred to as a blood vessel
- FIG. 4 to FIG. 9 a large saphenous vein (hereinafter also simply referred to as a blood vessel) that extends from the thigh of the lower limb, which is a blood vessel to be collected, to the ankle, is used for bypass.
- an example of the routine shown in the flowchart of FIG. 4 is followed.
- a blood vessel collection operation using the above-described biological collection operation system 101 will be described.
- the blood vessel 11 to be collected exists between the inguinal part 13 of the lower limb 12 and the ankle 14.
- the blood vessel 11 to be collected is assumed to be 60 cm long, for example.
- the operator specifies the position of the blood vessel 11 (step (hereinafter abbreviated as S) 1).
- the position of the blood vessel 11 is specified by the operator's tactile sensation or using a device such as a sonar.
- the surgeon has a length of the incision, for example, 2 with a scalpel, just above the specified blood vessel 11 and slightly below the knee 15, approximately along the direction of the tube of the blood vessel 11.
- a 5cm cut 16 is provided (S2).
- the blood vessel 11 is exposed at the skin cut portion 16, and the thread and the fabric around the blood vessel 11 are peeled off (S3).
- the surrounding tissue is exfoliated over the entire length of the blood vessel 11 using the dissector 31 (S4).
- the surgeon sets the trocar 21 in the skin incision 16.
- the surgeon gradually inserts the dissector 31 through the guide tube portion 22 of the trocar 21 while viewing the endoscopic image in the direction from the skin incision 16 to the groin 13 (indicated by the arrow A1). Go.
- the surgeon removes the blood vessel 11 slowly around the surrounding tissue.
- An endoscopic image is necessary for the operator in order for the operator to peel off the surrounding tissue along the blood vessel 11.
- the operator When exfoliating the surrounding tissue of the blood vessel 11, for example, if the skin surface direction is raised with respect to the blood vessel 11, the operator exfoliates the vertical direction of the blood vessel 11 and further exfoliates the left and right direction. Thus, the operator can completely exfoliate the surrounding tissue over the entire circumference of the blood vessel 11. By peeling off the entire circumference of the blood vessel 11, the side branch of the blood vessel 11 can be seen well in the endoscopic image.
- the operator pulls out the die sector 31 from the trocar 21.
- the surgeon changes the direction of the tractive force of the skin incision 16 and gradually inserts the dissector from the skin incision 16 in the direction of the ankle 14 (indicated by the arrow A2). Then, the operator peels the blood vessel 11 from the surrounding tissue while viewing the endoscopic image.
- the operator when setting the trocar 21 at the skin incision 16, the operator inserts the guide tube portion 22 from the skin incision 16 toward the groin, and the fixing portion 24 applies to the skin. Fix it.
- the insertion part 32 of the die sector 31 is a guide tube of the trocar 21 fixed to the skin cutting part 16 by the fixing part 24. Through part 22, it is inserted subcutaneously in lower limb 12.
- an endoscope insertion part is inserted into the insertion part 32. Since the insertion direction of the dissector 31 is along the direction of the blood vessel 11, the surgeon gradually inserts the dissector 31 so that the tissue around the blood vessel 11 is detached from the blood vessel 11 while viewing the endoscopic image. To go. In other words, the dissector 31 is not inserted from the skin incision 16 along the blood vessel 11 to below the groin 13. The surgeon gradually peels the blood vessel 11 up to the groin 13 and the blood vessel 11 up to the ankle 14 while moving the dissector 31 back and forth in the insertion direction.
- a predetermined gas for example, carbon dioxide gas
- the air supply tube 34 connected to the grip portion 33 of the die sector 31 by the air supply connector provided in the die sector 31, and the insertion portion Ejected from the opening 35a provided at the tip of 32.
- the surgeon removes the surrounding tissue force of the blood vessel 11, and a predetermined gas, for example, diacid-carbon gas, is interposed between the separated tissue and the blood vessel.
- a predetermined gas for example, diacid-carbon gas
- the surgeon removes the dissector 31 from the trocar 21, leaves the trocar 21 as it is, and inserts the harvester 41 (see FIG. 8).
- the side branch of the blood vessel 11 is cut (S5).
- the surgeon When cutting the side branch 11A, the surgeon first inserts the harvester 41 from the skin incision 16 to the bottom of the ankle 14 and the ankle 14 force is directed toward the skin incision 16 as well. Cut each side branch 11A one by one.
- the side branch 11A is cut by a bipolar cutter 43 which is an electrical mes- sage provided at the distal end of the insertion portion 42 of the harvester 41.
- the cut portion of the side branch 11A cut by the bipolar cutter 43 is substantially hemostatic. Then, using the harvester 41, all of the side branches 11A of the blood vessel 11 up to the ankle 14 are cut.
- the structure of the harvester 41 will be described later in detail. The structure will be briefly described here.
- the blood vessel 11 is hooked on a bayokino 45 which is a blood vessel holding portion provided at the tip of the harvester 41.
- a bayokino 45 When hooking the blood vessel 11 on the bain kino 45, open a part of the bain keeper 45, hook the blood vessel 11 in the open place, hook it, and then close the opened part.
- Such a mechanism is possessed by Bainchino 45 of Harvester 41.
- the vane keeper 45 is movable in the axial direction of the harvester 41 and can move the tip end force of the endoscope in the direction in which the vane keeper 45 is released. ⁇ It can be easy to see.
- a groove having a width of 0.5 mm is formed at the tip of the bipolar cutter 43.
- the side branch 11A is pushed into the groove so that the side branch 11A is pushed.
- A is cut in the compressed state.
- a wiper is provided at the tip of the harvester 41 for wiping off the attachment adhered to the window portion of the tip of the rigid endoscope, surrounded by the wiper guard.
- a part of the cylindrical wiper guard part is provided with a sweep-out hole for sweeping out the deposits wiped out by the wiper. Examples of such deposits include blood, fat, and smoke from electric scalpels.
- the harvester 41 is also provided with an air supply connector, and is fed from the gas supply tube 44 connected to the grip portion 400 of the carbon dioxide gas harvester 41, and the distal end portion of the insertion portion 42. Ejected from an opening (not shown) provided in Therefore, it becomes easy to cut the side branch 11A of the blood vessel 11.
- a small skin incision is made on the ankle 14 with a cut length of lcm or less, for example, and the distal end of the blood vessel 11 is pulled out from the skin incision 17 and threaded or forceps are placed.
- the end part is treated (S6).
- the harvester 41 in the vicinity of the skin incision 16 is again inserted under the ankle 14 and the surgeon views the subcutaneous blood vessel 11 and the forceps at the skin incision 17 with an endoscope. Then, the blood vessel 11 is pinched with forceps and the blood vessel 11 is pulled out from the skin incision 17.
- FIG. 7 is a view for explaining the treatment of the distal end portion of the blood vessel 11.
- a part of the blood vessel 11 is tied with a thread, and the blood vessel 11 is cut at a position l ib on the side of the knee 15 from the knot 11a.
- the skin cut at the skin incision 17 is then performed by the operator or the like by closing the skin incision 17 with tape or the like.
- the operator pulls out the blood vessel 11 from the skin incision 17 while viewing the subcutaneous blood vessel in the skin incision 17 with an endoscope.
- the harvester 41 is removed from the trocar 21 and the direction of the guide tube portion 22 of the trocar 21 of the skin cutting portion 16 is changed to the direction of the groin portion 13, and the harvester 41 is inserted,
- the side branch of the blood vessel 11 between the cut 16 and the groin 13 is cut (S7).
- the surgeon cuts the side branch 11A of the blood vessel 11 from the skin incision 16 to the groin 13 while viewing the endoscopic image.
- the side branch 11A is cut by inserting the harvester 41 from the skin incision 16 to the bottom of the inguinal part 13, and from the inguinal part 13 toward the incision 16 to the blood vessel 11. Cut side branch 11A one by one.
- the insertion portion 42 of the harvester 41 is inserted into the lower limb 12 subcutaneously through the guide tube portion 22 of the trocar 21 fixed to the skin incision portion 16 by the fixing portion 24. Yes.
- an endoscope insertion portion is inserted into the insertion portion 42. Since the insertion direction of the harvester 41 is along the direction of the blood vessel 11, the operator cuts the side branch 11A of the blood vessel 11 while viewing the endoscopic image.
- the inguinal portion 13 is cut with a small skin having a cut length of, for example, lcm or less, and the blood vessel 11 is cut from the skin cutting portion 18
- the distal end is pulled out, and the hook and forceps for placing the thread are placed, and the distal end is treated (S8).
- the harvester 41 in the vicinity of the skin incision 16 is inserted again under the inguinal part 13, and the surgeon uses the endoscope to connect with the subcutaneous blood vessel 11 in the skin incision 18. While looking at the forceps, pinch the blood vessel 11 with the forceps and pull out the blood vessel 11 from the skin incision 18.
- the treatment of the end of the blood vessel 11 is performed by tying a part of the blood vessel 11 with a thread and at the position id on the side of the knee 15 from the joint 11c. Cut 11
- the skin cut at the skin incision 18 is then performed by the operator closing the skin incision 18 with tape or the like.
- the surgeon removes, for example, a 60 cm blood vessel 11 from the skin incision 16 as shown in FIG. 9 (S9).
- a hole is opened in the removed blood vessel 11 and cannot be used as a blood vessel for a neuropath. S10).
- the operator applies a thread knot to all the side branches 11A of the blood vessel 11 so that the blood at the distal end of the side branch 11A with the distal end cut does not leak.
- a syringe is attached to one end of the blood vessel 11 and physiological saline is injected into the blood vessel 11.
- the operator conducts a leak test on the blood vessel 11 depending on whether or not there is a hole through which physiological saline leaks.
- the above-mentioned endoscope is compared with the conventional operation in which a tissue in a predetermined part of the lower limb 12 is incised so that all the blood vessels 11 can be seen from the inguinal portion 13 to the ankle 14 of the lower limb 12.
- the method of removing blood vessels using, for example has only three skin incisions and is less invasive to the patient. For example, it may be possible to shorten the period after surgery until the patient can walk.
- the dissector 31 is mainly composed of an insertion part 32 and a grip part 33 connected to the insertion part 32.
- a peeling member 37 is provided at the tip of the metal insertion portion 32 of the die sector 31.
- the peeling member 37 is made of a material such as a transparent synthetic resin, and has a cylindrical shape on the proximal end side and a conical shape on the distal end side. Since the peeling member 37 is a transparent member, an image of the subject illuminated by the illumination light from the front end of the rigid endoscope 51 inserted into the rigid endoscope insertion channel 36 is obtained when inserted under the skin. Can be obtained by rigid endoscope 51!
- the metal tube member 36 a forming the rigid endoscope insertion channel 36 inserts the proximal side force of the grip portion 33.
- the leading end of the part 32 is inserted into the inside of the dissector 31.
- a first connection member 38 having a substantially cylindrical shape is provided on the distal end side of the grip portion 33.
- the grip portion 33 is a hollow cylindrical exterior member, and the outer peripheral surface of the first connecting member 38 is connected to the inner peripheral surface of the exterior member on the distal end side of the grip portion 33 via the sheath 39. Are in close contact with each other.
- An air supply tube 34 is connected to the end face 38 b on the base end side of the first connecting member 38.
- the first connecting member 38 is formed with a hole 38 c that communicates the inner space of the air supply tube 34 and the inner space of the metal sheath 39.
- the hole 38 c is a communication path between the inner space of the air supply tube 34 and the inner space of the metal sheath 39.
- An opening 38d of a hole 38c is provided on the front end side surface of the first connecting member 38.
- the air supply tube 34 is fitted into one end of the hole 38c in the grip portion 33, and the other end of the hole 38c is inside the metal sheath 39 and outside the tube member 36a. It is open inside.
- An air supply connector 34 a is provided at the proximal end of the air supply tube 34.
- the air supply connector 34a is connected to the connector of the tube connected to the air supply device 108. Therefore, the air supply device 108 can send a predetermined gas into the sheath 39 through the air supply tube 34 and the hole 38c of the first connecting member 38.
- the peeling member 37 and the sheath 39 of the insertion portion 32 are connected by a second connecting member 58a.
- the peeling member 37 is fitted on the distal end side of the second connecting member 58a, and the sheath 39 is fitted on the proximal end side of the second connecting member 58a, whereby the peeling member 37 and the sheath 39 are connected.
- the inside is joined in an airtight manner.
- the tip of the hook-shaped portion 58b has a directional convex portion 58c in a direction in which the central axial force is also radiated in a plane orthogonal to the axial direction of the insertion portion 32.
- a hole 35 is formed in the sheath 39 at a position corresponding to each of the tip portions of the three hook-shaped portions 58b, and the convex portion 58c is locked to the hole 35 so that the sheath 39 of the insertion portion 32 is locked.
- the shape of the hole is formed.
- each protrusion 58c and each hole 35 are set so that a gap is formed between the hole 35 and the protrusion 58c in a state where the protrusion 58c is locked to the hole 35.
- Three openings 35a are formed.
- the outer diameter of the base end side of the second connecting member 58 a is larger than the outer diameter of the sheath 39.
- the carbon dioxide gas supplied from the air supply tube 34 passes through the hole 38c of the first connecting member 38, and the sheath 39, the pipe member 36a, the first connecting member 38, and the second connecting member 38. It is introduced into a sealed space 39a formed by the connecting member 58a. The introduced gas is discharged from the sealed space 39a to the outside of the insertion portion 32 through the opening 35a.
- a guide groove 33b is provided along the axial direction of the die sector 31 on the inner peripheral surface of the base end portion 33a of the die sector 31.
- a fixing member 33c is fixed to the guide groove 33b with a screw.
- the fixing member 33c is formed by bending a metal plate member into a U-shape.
- both arms of the U-shape are bent so as to have a convex portion directed toward the inside of the U-shape.
- a convex portion 52 a (see FIG. 10) is provided on the distal end side of the eyepiece 53 of the rigid endoscope 51.
- the base end portion 33a is provided with a notch portion 33d so that the light guide connector portion 52 can move along the notch portion 33d.
- the convex portion 52a extends along the guide groove 33b provided on the inner peripheral surface of the proximal end portion 33a, and the light
- the rigid endoscope 51 is inserted into the proximal end portion of the disector 31 so that the guide connector portion 52 enters along the notch 33d.
- the convex portion 52a moves along the inside of the guide groove 33b, piled on the elastic force of the fixing member 33c, and fixed to the metal fixing member. Over the convex part of 33c. At this time, the light guide connector portion 52 also moves along the cutout portion 33d provided in the base end portion 33a.
- the light guide connector portion 52 is made to enter the notch portion 33d, and the convex portion 52a is made to enter the guide groove 33b.
- the rigid endoscope 51 is inserted into the dissector 31.
- the convex portion 52a of the rigid endoscope 51 is engaged and fixed so as to be sandwiched by the fixing member 33c, and the elasticity of the fixing member 33c is reached. By force, it will not fall out easily!
- the distal end side of the tube member 36a is fixed to the second connecting member 58a, and the proximal end side of the tube member 36a is fixed to the proximal end portion of the grip portion 33.
- Tube section with both ends fixed As shown in FIGS. 11 and 16, the central axis of the material 36a is arranged on the same axis AX as the central axis of the insertion part 32, and the pipe member 36a is inserted through the central part of the first connecting member 38. Yes. As shown in FIG.
- the pipe member 36a is passed through the hole 38e at the center of the first connecting member 38, but there is a gap between the inner peripheral surface of the hole 38e and the outer peripheral surface of the pipe member 36a.
- 38f is provided.
- the gap 38 f constitutes a communication path that communicates with the inner space of the sheath 39 and the inner space of the grip portion 33.
- the pipe member 36a is inserted into the hole 38e of the first connecting member 38 in a loosely fitted state.
- the exterior member of the grip portion 33 is provided with a gap 33e where the air supply tube 34 is inserted, and other gaps.
- Other gaps include, for example, holes (not shown) provided in the exterior member of the grip portion 33. Such a gap forms a communication path that connects the inner space and the outer space of the grip portion 33.
- the inner space of the sheath 39 communicates with the outer space of the gripping portion 33 via the gap 38f and the gap 33e.
- the carbon dioxide gas supplied through the air supply tube 34 is introduced into the inner space of the sheath 39 through the hole 38c of the first connecting member 38.
- the Carbon dioxide is released from the pore 35a into the body cavity.
- the pressure in the body cavity increases, but the body cavity passes through the gap 38f and the gap 33e communicating with the inner space of the sheath 39 and the outer space of the grasping portion 33. Of carbon dioxide is emitted.
- This predetermined pressure is determined based on the relationship between the air flow rate and the cross-sectional area of each gap, and the area where the cross-sectional area of the communication passage is the smallest is smaller than the area where the cross-sectional area of the air-supply path is the smallest. It is set small. In other words, the portion having the smallest cross-sectional area of the air supply passage is set to have a larger cross-sectional area than the portion having the smallest cross-sectional area of the communication passage.
- the harvester 41 is mainly composed of an insertion portion 42 and a gripping portion 400 connected to the insertion portion 42.
- a bipolar cutter 43 is provided at the top of the insertion portion 42 that is a metal cylindrical tube of the harvester 41, and a vane keeper 45 that is a retainer is provided inside the lower portion.
- the configuration on the base end side of the harvester 41 is the same as that on the base end side of the disector 31 (see FIG. 15), as shown in FIG. Specifically, as shown in FIG. 18, the configuration of the proximal end side of the harvester 41 is arranged so that the rigid endoscope 51 can be easily and securely fixed to the proximal end portion of the rotary harvester 41.
- a guide groove 400 b is provided along the axial direction of the harvester 41 on the inner peripheral surface of the base end portion 400 ⁇ / b> A of the harvester 41.
- a fixing member 400c is fixed to the guide groove 400b with a screw.
- the fixing member 400c is formed by bending a metal plate-like member into a U-shape, and further, both ends of the U-shape are bent so as to have convex portions directed toward the inside of the U-shape. Yes.
- the base end portion 400A is provided with a notch portion 400d so that the light guide connector portion 52 can move along the notch portion 400d.
- the convex portion 52a of the rigid endoscope 51 is provided on the inner peripheral surface of the proximal end portion 400A shown in FIG.
- the rigid endoscope 51 is inserted into the proximal end portion of the harvester 41 so that the light guide connector portion 52 enters along the guide groove 400b and along the notch portion 400d.
- the convex portion of the rigid endoscope 51 moves along the inside of the guide groove 400b, and the elasticity of the fixing member 400c. Pile to force and go over the convex part of metal fixing member 400c.
- the light guide connector 52 also moves along the notch 400d provided in the base end 400A.
- the rigid endoscope 51 when the rigid endoscope 51 is inserted from the proximal end portion of the harvester 41, the light guide connector portion 52 is inserted into the cutout portion 400d, and the convex portion of the rigid endoscope 51 is provided. After setting the positional relationship between the harvester 41 and the rigid endoscope 51 so that the guide groove 52b enters the guide groove 400b, the rigid endoscope 51 is inserted into the harvester 41.
- the convex portion 52a of the rigid endoscope 51 is engaged and fixed so as to be sandwiched by the fixing member 400c, and the fixing member 400c The elastic force prevents it from falling off easily.
- the vein keeper 45 of the harvester 41 includes a vein keeper shaft 412 that holds a substantially U-shaped blood vessel holding table 411 so as to be movable in the longitudinal axis direction, and a vein keeper shaft 412.
- a parallel and substantially U-shaped blood vessel holding table 411 is formed of a lock shaft 414 that can move forward and backward in the longitudinal axis direction with respect to the blood vessel holding table 411 that forms a closed space 413 for containing a blood vessel.
- the lock shaft 414 is a force that forms a closed space 413 while being locked to the blood vessel holding table 411 in the same manner as the vane keeper shaft 412, and by releasing the lock state of the lock shaft 414, As shown in FIG. 20, the closed space 413 is released so that the blood vessel 11 can be advanced and retracted in the closed space 413 so as to be accommodated.
- a notch 415 is provided on the tip side surface of the insertion portion 42 where the nopolar cutter 43 is provided, and a bipolar shaft (described later) for moving the bipolar cutter 43 forward and backward is inserted into the insertion portion 42 via the notch 415.
- the inner wall surface of the cutout 415 is provided with a guard portion 416 having an arc-shaped cross section, and the wiper for wiping off deposits attached to the window portion of the distal end portion of the rigid endoscope 51 on the inner surface of the distal end of the insertion portion 42. 417 is provided. Then, the other end of the wiper 417 sweeps the inside of the guard part 416 with one end of the wiper 417 as an axis, thereby forming a wiper guard part.
- a part of the cylindrical wiper guard is wiped by the wiper 417.
- a discharge hole 419a for sweeping out the adhered matter 418 (see FIG. 21) is provided.
- Examples of the deposit 418 include blood, fat, and smoke generated by an electric knife.
- the wiper 417 is swept by a wiper lever 419 (see FIG. 17) via a wiper shaft (not shown: see FIG. 25).
- FIG. 21 which is an arrow view seen from the arrow A in FIG. 19, the opening of the rigid endoscope insertion channel 420 through which the rigid endoscope 51 is inserted into a predetermined inner side than the distal end surface of the insertion portion 42.
- the opening part of the air supply channel 421 for supplying air is provided adjacently.
- the metal tube member 420a forming the rigid endoscope insertion channel 420 has the proximal end side force of the grip portion 400 and the insertion portion 42. It passes through the harvester 41 up to the tip.
- a plurality of holding members 42a are arranged in the middle of the insertion portion 42 of the metal tube.
- the bipolar cutter 43 is connected to the bipolar cutter lever 401 provided in the grip portion 400 by a bipolar shaft 450 that passes through the insertion portion 42. This forward / backward force is transmitted to the bipolar cutter 43 via the bipolar shaft 450 so that the bipolar force cutter 43 can be advanced and retracted forward of the insertion portion 42.
- the vane kino 45 is provided on the grip portion 400! /, And is connected by a vane keeper shaft 412 that passes through the rubbing ink lever 402 and the insertion portion 42.
- the vane keeper lever 402 is advanced and retracted along the longitudinal axis, the advancing / retreating force is transmitted to the vane keeper 45 via the vane keeper shaft 412 and moves forward and backward in the insertion portion 42.
- the metal tube 420b forming the rigid endoscope insertion channel 420 is fixed in the insertion portion 42 by a plurality of holding members 42a (see FIG. 25).
- the two bipolar shafts 450, the vane keeper shaft 412, the lock shaft 414, and the wiper shaft are not fixed in the insertion portion 42 (see FIG. 25).
- the two bipolar shafts 450, the vane keeper shaft 412 and the lock shaft 414 are configured to be able to advance and retreat in the longitudinal axis direction of the insertion portion 42, and the wiper shaft is configured to be rotatable around the axis of the wiper shaft.
- the vane keeper lever 402 and the vane keeper shaft 412 can move integrally on the inner surface of the gripper 400 by a click mechanism 451 that pin-presses the inner surface of the gripper 400.
- the vane keeper lever 402 and the vane keeper shaft 412 have a click mechanism 451 disposed on the inner surface of the gripper 400. For example, if it is located at any force of the three click grooves 452 provided, it is stably held at that position. In addition, the operator can easily escape the click mechanism 451 from the click groove 452 by applying a force to the longitudinal axis.
- the vane keeper lever 402 is detachably connected to the lock lever 453, and the vane keeper lever 402 can be separated from the lock lever 453 by pressing the lock button 454. Yes.
- the lock lever 453 is connected to the lock shaft 414. By moving the lock lever 453 forward and backward while being separated from the vane keeper lever 402, the blood vessel 11 can be advanced and retracted in the closed space 413 so as to be retractable. (Refer to Fig. 19 and Fig. 20).
- the vane keeper lever 402 is firmly fixed to the ink keeper shaft 412 by bonding with a screw 460.
- a metal air supply noise 461 forming the air supply channel 421 is provided on the proximal end side of the grip portion 400.
- the tip of the insertion portion 42 is inserted through the inside of the pressure regulator 41.
- An air supply tube 44 is fitted in one end of the air supply pipe 461 on the proximal end side of the grip part 400 in the grip part 400, and an air supply connector 44a is provided at the base end of the air supply tube 44.
- the air supply connector 44a is connected to the connector of the tube connected to the air supply device 108.
- the vane keeper 45 can be advanced and retracted by moving the vane keeper lever 402 forward and backward. Therefore, for example, if the endoscopic image at the time of cutting the side branch 1 lAa is difficult to confirm the state of the side branch 11A in the image as shown in FIG. 27, the vane keeper lever 402 is moved forward in the longitudinal direction as shown in FIG. By doing so, the vane keeper 45 also moves forward from the tip, and as shown in FIG. 28, an endoscopic image suitable for confirming the state of the side branch 11a can be visually recognized.
- FIG. 29 the bipolar cutter 43 that is passed through the harvester 41 will be described with reference to FIGS. 29 and 30.
- the bipolar cutter 43 includes a cutter body 422 that is a side branch holding member that also serves as a transparent insulating member, an application electrode 425 that is one bipolar electrode, and a feedback electrode 424 that is the other bipolar electrode.
- the return electrode 424 is It has a layer structure in which the return electrode 424, the cutter body 422, and the application electrode 425 are three layers.
- the cutter body 422 has a V-shaped groove 436 formed on the distal end side, and a slit groove 427 having a width of 0.5 mm, for example, is formed at the base end of the V-shaped groove 436.
- the side branch 11A When cutting the side branch 11A, the side branch 11A is guided by the slit groove 427 along the V-shaped groove 436 of the cutter body 422, and is inserted into the slit groove 427 so as to push the side branch 11A. Thus, the side branch 11A is held in a compressed state in the slit groove 427. In this state, a high-frequency current is passed from the application electrode 425 to the return electrode 424, whereby the side branch 11A is cut and stopped.
- the bipolar cutter 43 configured as described above can be manufactured at a low cost and has excellent workability and heat durability, and can be cut off (the side branch 11A). ) And the like are improved.
- the bipolar cutter 43 may have a slight loss in durability due to the heat generated by the discharge between the two electrodes 424 and 425.
- the cutter body 422 is formed of heat-resistant ceramics or the like, there is a problem that the manufacturing cost is high and the processability is inferior compared with the synthetic resin.
- the bipolar cutter 43 cuts the living tissue (side branch 11A) from one applied electrode 425 to the other feedback electrode 424 by a thermal action due to discharge of a high-frequency current. Therefore, even if the bipolar cutter is not formed entirely in ceramics, the possibility of damage due to heat is suppressed by forming only between a pair of electrodes, particularly the part in contact with the electrode on the application side with heat-resistant ceramics. Can do.
- the neopolar cutter preferably has a structure in which the main cutter body is formed of a synthetic resin that is inexpensive and has good workability, and a ceramic member is provided between a pair of electrodes.
- the bipolar cutter is a member in which the amount of heat generated in the applied electrode and the living tissue to be cut by the high-frequency current discharged between the pair of electrodes is formed of ceramics. It is transmitted over a wide area. As a result, the living tissue to be cut has a problem that the amount of heat consumed at the time of cutting is reduced and the hemostatic property is lowered.
- the bipolar cutter 43 may be configured as described below.
- the bipolar cutter 43 includes a cutter body 422, a tissue sandwiching portion 423, an application electrode 425 which is a first electrode serving as one of the bipolar, and the other side of the bipolar.
- the second electrode is a feedback electrode 424, two lead wires 428 (an application-side lead wire 428a and a feedback-side lead wire 428b), and a lead wire cover 426.
- the cutter main body 422 is formed of a synthetic resin, which is a transparent insulating member such as polycarbonate, as described above.
- the cutter body 422 has an arcuate cross section along the arcuate inner peripheral surface of the notch 415 (see FIGS. 21 and 22) of the harvester 41 when viewed from the longitudinal axis. It has a curved shape (see Fig. 35).
- the cutter body 422 includes a V-shaped groove 436 formed at the tip, a fitting portion 435 that is a groove into which a tissue sandwiching portion 423 described later is fitted, an application-side lead wire 428a, and a return-side lead wire. It has a groove part 423 ⁇ 4 in which the lead wire cover 431 is fitted after the 428b is arranged in an insulated state, and a concave part 4221 in which the return electrode 424 is arranged. In addition, two long grooves are formed on the bottom surface of the groove 422j over the entire length in order to maintain insulation of the application-side lead wire 428a and the feedback-side lead wire 428b.
- the insertion portion 435 was formed in a substantially circular shape when the first groove portion 435a formed in a slit shape from the V-shaped groove 436 at the tip of the cutter body 422 and the base end side were viewed from above. Constructed with a second groove 435b!
- the cutter body 422 is formed with a step 422a (see FIGS. 32 and 35) serving as an inward flange on the inner peripheral side where the fitting portion 435 is formed, and the proximal end portion of the tissue sandwiching portion 423 A fitting recess 422b (see FIGS. 31 and 34) is formed at a position corresponding to.
- a penetration part 422e (see FIGS. 32 and 33) through which the lead wire connection part 425a of the application electrode 425 is inserted is provided at the tip side. Is formed. Accordingly, in the application electrode 425 disposed on the lower surface side of the cutter body 422, the lead wire connecting portion 425a is inserted through the through portion 422e, and the end of the lead wire connecting portion 425a and the groove portion 423 ⁇ 4 The application-side lead wire 428a disposed on the upper surface can be electrically connected.
- the cutter body 422 has a total of three retaining portions 422c on its upper and lower surfaces, and two of the retaining portions 422c protrude upward at the tip side of the recess 4221, and the remaining 1 One retaining part 422c protrudes downward!
- These retaining portions 422c are passed through holes 425b and 424a formed in the application electrode 425 and the return electrode 424, and are melted by heat caulking, for example, and then outwardly flanged (see FIGS. 34 and 35).
- the return electrode 424 and the application electrode 425 are fixed on the upper and lower surfaces of the cutter body 422, respectively.
- the return electrode 424 is a metal plate having a curved cross section when viewed from the longitudinal axis direction along the upper surface of the recess 4221 of the cutter body 422.
- the return electrode 424 has a boundary between the upper surface of the cutter body 422 and the tissue sandwiching portion 423, that is, a notch portion that is notched in a front rear circle shape when viewed from above so as to substantially follow each boundary line.
- the above-mentioned two holes 424a are provided on the tip side.
- the return electrode 424 is provided in parallel with the lead wire connecting portion 424b and the lead wire connecting portion 424b, which are electrically connected to the return side lead wire by welding at the base end portion, and in the groove portion 423 ⁇ 4 of the cutter body 422. And a projection 424c to be fitted and held.
- the lead wire connecting portion 424b and the protruding portion 424c are each bent at a substantially right angle downward, and further bent at a substantially right angle so as to extend to the base end side.
- the lead wire connecting portion 424b has a length that allows sufficient welding connection with the return-side lead wire whose extension length to the base end side is longer than the extension length of the projection portion 424c.
- the protrusion 424c has a length that extends to the base end side that is shorter than the base force of the recess 4221 of the cutter body 422 and the length of the groove 423 ⁇ 4 up to the through portion 422e. Accordingly, since the insulation is maintained without the protrusion 424c and the lead wire connecting portion 425a and the application side lead wire 428a of the application electrode 425 being in contact with each other, the insulation between the feedback electrode 424 and the application electrode 425 is also maintained.
- the application electrode 425 is a substantially rectangular metal plate that is disposed on the lower surface side of the cutter body 422 and the tissue sandwiching portion 423 and has the hole 425b described above.
- a lead wire connecting portion 425a that is electrically connected to the application side lead wire 428a by welding extends from the application electrode 425 to the base end side.
- the lead wire connecting portion 425a has an end portion in the extending direction bent upward at a substantially right angle, and further, the end portion is bent at a substantially right angle in the extending direction side.
- the application-side lead wire 428a and the return-side lead wire 428b are arranged in parallel in two long grooves formed on the bottom surface of the groove portion 422j of the cutter body 422 so as to be insulative, It is electrically connected to the female device 107 (see Fig. 2).
- the tissue sandwiching portion 423 is disposed substantially at the center of the distal end portion of the cutter body 422, and a ceramic force that is a heat-resistant member is also formed. That is, the bipolar cutter 43 of the present embodiment has a problem that if the entire cutter body 422 is made of ceramics, the manufacturing cost is high and the processability is inferior to that of a synthetic resin. By forming only the tissue sandwiching portion 423 with a certain ceramic, the manufacturing cost is reduced and the workability is excellent.
- the tissue sandwiching portion 423 includes a cylindrical portion 423A having a base end portion having a substantially cylindrical shape, and a substantially four side circumferential surface force of the cylindrical portion 423A. It has a prismatic shape and a so-called front / rear circular shape having a quadrangular prism-shaped portion 423B in which slit grooves 427 are formed. Note that the tissue sandwiching portion 423 in FIG. 26 shows a surface that becomes the lower surface side when fitted into the cutter body 422.
- this tissue sandwiching portion 423 extends long along the longitudinal axis direction, and has two arm portions 423a projecting outward on both sides of the square columnar portion 423B, and a cylindrical portion.
- the protrusion 423b protrudes from the side peripheral surface of the base end portion of 423A toward the base end side.
- the tissue sandwiching portion 423 is inserted into the insertion portion 435 of the cutter body 422, the two arm portions 423a are held by the step portion 422a of the first groove portion 435a, and the convex portion 423b is engaged with the cutter body 422. By being fitted and held in the concave portion 422b, it is fitted into the cutter body 422.
- a substantially circumferential groove 440 is formed in the cylindrical portion 423A.
- the groove portion 440 is separated from the substantially distal end portion of the applied electrode 425 covering the base end portion of the slit groove 427 by a predetermined distance, and the leading end portion of the applied electrode 425 is drawn in a circle.
- a bottomed groove formed to have a width of about 0.5 mm and a depth of about 1 to 2 mm.
- the groove portion 440 is not limited to a substantially circular shape, and may have any shape, for example, as long as it is separated from the distal end portion of the application electrode 425 that covers the proximal end portion of the slit groove 427.
- it may be a groove for drawing a polygon such as a rectangle or a triangle.
- the width dimension and the depth dimension of the groove 440 are set so that the tissue sandwiching part 423 can maintain a predetermined strength.
- the slit groove 427 is grooved to a width of, for example, 0.5 mm in the longitudinal axis direction of the tissue sandwiching portion 423 from the central portion on the tip side of the quadrangular prism-shaped portion 423B to the substantially central portion of the cylindrical portion 423A. Has been.
- the tissue sandwiching portion 423 is formed of a material having a high heat resistance, such as zirconia or anolemina, which is a ceramic structure material having high heat resistance.
- a stepped portion 430 cut out toward the proximal end side is formed on the lower surface of the tissue sandwiching portion 423 in order to position the distal end portion of the application electrode 425.
- the bipolar cutter 43 when the bipolar cutter 43 is made of a ceramic having a higher thermal conductivity than a synthetic resin such as polycarbonate, an applied electrode by a high-frequency current discharged between the electrodes 424 and 425 is used.
- the amount of heat generated in 425 and the side branch 11A which is a living tissue to be cut, is transmitted over a wide range of the tissue sandwiching portion 423 formed of ceramics.
- the side branch 11A has a problem that the amount of heat consumed at the time of cutting is reduced and the hemostasis is lowered.
- the bipolar cutter 43 of the present embodiment can solve the above-described problem by the groove portion 440 of the tissue sandwiching portion 425 in which a ceramic force is also formed between the electrodes 424 and 425.
- the cutting of the side branch 11A by the bipolar cutter 43 of the harvester 41 configured as described above will be described with reference to the flowchart of FIG. 4 and FIGS. 39 to 41.
- the dissector 31 is extracted from the trocar 21 and is removed. 21 is left as it is, the harvester 41 is inserted, and the side branch 11A of the blood vessel 11 between the skin incision 16 and the ankle 14 is cut (S5).
- the surgeon confirms the endoscopic image, and the bipolar cutter 43 advances the bipolar cutter lever 401 of the harvester 41 so that the side branch 11A enters the V-shaped groove 436 of the cutter body 422. Slide in the direction you want.
- the side branch 11A is guided by the V-shaped groove 436 to the slit groove 427 of the tissue sandwiching portion 423.
- the side branch 11A in the slit groove 427 of the tissue sandwiching portion 423 is discharged by the discharge from the application electrode 425. A quantity of heat is generated in the portion in contact with the application electrode 425, and solidifies and cuts as shown in FIG.
- the side surface of the groove 440 on the inner peripheral side of the tissue sandwiching portion 423 is the wall surface 4
- the outer peripheral side surface is a wall surface 440b, and the portion where the application electrode 425 and the side branch 11A are in contact with each other is shown as a heat generation unit 480.
- the amount of heat generated in the side branch 11A is transmitted radially to the tissue sandwiching section 423 and is transmitted to the groove section 440.
- the amount of heat transmitted to the groove 440 depends on the thermal conductivity ⁇ of the tissue sandwiching part 423 and the groove 440.
- the heat flux qa of the tissue sandwiching section 423 from the heat generation section 480 to the wall surface 440a can be calculated by the following equation (1).
- ⁇ 1 Side branch 11 Distance from slit groove 427 to wall 440a to wall surface 440a
- the heat flux qb of the groove 440 between the wall surfaces 440a and 440b of the tissue sandwiching part 423 can be calculated by the following equation (2).
- Wall 440a force is also distance to wall 440b
- the value of the heat flux q depends on the value of the thermal conductivity that is the product value. That is, the thermal conductivity air of air is a very small value as compared with the thermal conductivity a of the tissue sandwiching portion 423 formed by the ceramic cutter. For this reason, the heat flux qb in the groove 440 depends on the air thermal conductivity, which is the product value, and is extremely small and a value compared to the heat flux qa of the tissue sandwiching part 423.
- the tissue sandwiching part 423 sandwiches the side branch 11A that receives heat from the application electrode 425, and the heat generating part 480 (part of the slit groove 427) also exerts a force on the part up to the groove 440. Increases heat consumption.
- the tissue sandwiching part 423 rapid heat propagation is suppressed by the groove part 440, and only the part from the heat generation part 480 to the groove part 440 becomes high temperature. Therefore, since the side branch 11A consumes a large amount of heat, its hemostasis is improved.
- the bipolar cutter 43 of the present embodiment is not formed entirely in ceramics, but only by forming a portion between the pair of electrodes 424 and 425, in particular, a portion in contact with the applied electrode 425 with ceramics. It is possible to prevent the durability from being impaired due to heat.
- the tissue sandwiching part 423 is provided with the groove part 440, so that it is difficult for heat to propagate from the groove part 440 to the outer peripheral part.
- a rapid increase in temperature is suppressed in the portion on the outer peripheral side from the groove 440 of the tissue sandwiching portion 423.
- the temperature rise of the cutter main body 422 into which the tissue sandwiching portion 423 is inserted can be suppressed, and thermal durability can be ensured even if the force cutter main body 422 is formed of a synthetic resin having a low operating temperature. .
- the groove 440 is formed by grooving from the surface (the lower surface in the present embodiment) of the tissue sandwiching portion 423 on which the application electrode 425 is disposed. Therefore, the amount of heat concentrated near the application electrode 425 in contact with the side branch 11A suppresses heat propagation to the tissue sandwiching portion 423 in the groove portion 440. Therefore, the vicinity of the application electrode 425 has the highest temperature due to the amount of heat consumed by the tissue sandwiching section 423, and as described above, the amount of heat necessary for hemostasis cutting of the side branch 11A is ensured.
- the nopolar cutter 43 of the harvester 41 which is the cutting means in the present embodiment, is excellent in thermal durability and reliably hemostasis the side branch 11A of the blood vessel 11 to be collected, which is a living tissue. Can be cut.
- the distal end portion of the application electrode 425 located on the proximal end side of the slit groove 427, that is, the heat generation unit 480 to the return electrode 42 The central portion of the return electrode 424 is cut out in a substantially circular shape with the base end portion of the slit groove 427 as a substantially center so that the distances up to 4 are substantially equal.
- the heat generated in the heat generation part 480 spreads uniformly on the upper surface of the tissue sandwiching part 423, so that it is possible to prevent the cutter body 422 and the tissue sandwiching part 423 from increasing in heat.
- the cutter between the force feedback electrode 424 and the application electrode 425 provided with a tissue sandwiching portion 423 made of a ceramic cutter in which a groove 440 is formed at the center of the tip of the cutter body 422 is provided. All the front end portions of the main body 422 may be made of a ceramic member having the groove portion 440.
- the value of the air thermal conductivity air is affected by the ambient temperature. However, since the amount of heat consumed for the side branch 11 A increases, the discharge time of the high-frequency current from the application electrode 425 to the return electrode 424 can be shortened.
- the dissector 31 is configured integrally with the air supply tube 34 and the air supply connector 34a.
- the harvester 41 is configured integrally with an electrical cable 47 and a connector 470, an air supply tube 44, and an air supply connector 44a provided at the proximal end of the electrical cable 47.
- the harvester 41 does not exceed the predetermined pressure in the body cavity when the carbon dioxide gas supplied from the air feeding tube 44 is fed into the body cavity from the air feeding channel 421.
- it has a structure for letting gas of carbon dioxide and carbon dioxide escape to the outside.
- a plurality of holding members 42a are arranged inside the insertion portion 42, which is a tube member. Is placed.
- the metal tube 420b is fixed with respect to the holding member 42a in the insertion portion 42, but the two bipolar shafts 450, vane keeper shaft 412, lock shaft which are other built-in components. 414 and the wiper shaft are not fixed.
- the two bipolar shafts 450, the vane keeper shaft 412, the lock shaft 414, and the wiper shaft are inserted into a plurality of holes provided in the holding member 42a in a loosely fitted state. Accordingly, a gap 42b is formed between each hole and the built-in object.
- the supplied carbon dioxide gas is supplied into the body cavity from the air supply channel 421.
- the inside of the body cavity is connected to the inner space of the grasping section 400 via the gap 42b in the insertion section 42 described above. Communicate. That is, the gap 42b constitutes a communication path that connects the outer space of the insertion portion 42 and the inner space of the grip portion 400.
- the exterior member of the grip portion 400 is provided with a gap 400a where the air supply tube 44 is inserted, and other gaps.
- Other gaps include holes (not shown) provided in the external member of the grip portion 400. Such a gap forms a communication path that connects the inner space and the outer space of the grip portion 400.
- the inner space of the insertion portion 42 communicates with the outer space of the grip portion 400 through the gap 42b and the gap 400a.
- the carbon dioxide carbon gas supplied via the air supply tube 44 passes from the distal end portion of the insertion portion 42 into the body cavity via the air supply channel 421. be introduced.
- the pressure in the body cavity rises due to the introduction of carbon dioxide into the body cavity, but the carbon dioxide in the body cavity passes through the gap 42b and the gap 400a described above from the distal end of the insertion section 42. Discharged.
- the gap 42b and the gap 400a that form at least a part of the communication path reduce the pressure in the body cavity so as not to exceed a predetermined pressure by releasing the gas of carbon dioxide and carbon dioxide in the body cavity. That is, it constitutes pressure relief means for relief.
- the predetermined pressure is the air flow rate and the cross-sectional area of each gap.
- the cross-sectional area of the communication path is the smallest !, and the cross-sectional area of the part is set smaller than that of the part having the smallest cross-sectional area of the air supply passage.
- the portion where the cross-sectional area of the air supply passage is the smallest is set larger than the portion where the cross-sectional area of the communication passage is the smallest.
- the diacid oxide in the body cavity is provided via the gap 38f and the gap 33e communicating with the inner space of the sheath 39 of the dissector 31 and the outer space of the grip portion 33.
- the force that allows the carbon dioxide to be discharged The biological tissue collecting apparatus according to the second embodiment is positively inserted into the insertion portion of the disector 31 as shown in FIGS. 44 to 46.
- An exhaust channel is provided to exhaust the gas.
- FIG. 44 is a partial cross-sectional view of the distal end portion of the insertion portion 32 along the insertion axis.
- FIG. 45 is a partial cross-sectional view of the distal end portion of the grip portion 33 along the insertion axis.
- FIG. 46 is a view for explaining the position of the opening of each hole in the insertion portion 32.
- FIG. 44 to FIG. 46 the same components as those of the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
- the second connecting member 58a is provided with one or more, here three holes 35c, having an opening 35b on the outer peripheral surface thereof.
- each hole 35c is formed so as to be directed toward the inner peripheral direction from the outer peripheral direction of the second connecting member 58a and to be directed toward the proximal end side of the insertion portion 32 in the middle of the second connecting member 58a. Yes.
- the hole 35c has a substantially L-shaped shape.
- An exhaust tube 34b constituting an exhaust channel communicating with the inner space of the hole 35c is connected to the proximal end side of the second connecting member 58a.
- the base end side of the exhaust tube 34b is connected to the front end face of the first connecting member 38 as shown in FIG.
- the first connecting member 38 has a force on the front end face and a force hole 38g on the base end face. Is formed.
- One end of the exhaust tube 34b is connected to the opening of the hole 38g on the distal end side of the first connecting member 38.
- the hole 35c, the exhaust tube 34b, and the hole 38g constitute a communication path that connects the outer space of the insertion portion 32 and the inner space of the grip portion 33.
- FIG. 46 is a partial perspective view showing the positions of the openings 35a and 35b formed at the distal end of the insertion portion 32.
- Three openings 35a are provided in the sheath 39 along the circumferential direction with an interval of 120 degrees around the central axis of the insertion portion 32.
- the three opening portions 35b are provided in the second connecting member 58a along the circumferential direction with an interval of 120 degrees around the central axis of the insertion portion 32.
- Each opening 35b is separated from each opening 35b by a predetermined distance in the axial direction of the insertion portion 32, and when the axial force of the insertion portion 32 is also seen, In order to prevent the positions of the openings 35a from overlapping, the three openings 35b are provided at positions where the three openings 35a are rotated around the central axis of the insertion portion 32 by a predetermined angle, for example, 60 degrees. Yes.
- the carbon dioxide oxide fed from one air feeding tube 34 is supplied into the body cavity from the three openings 35a, and three from the three openings 35b.
- the gas is discharged to the outside space of the grip portion 33 through the exhaust tube 3 4b and the gap 33e. Therefore, in the communication path formed at least in part by the hole 35c, the exhaust tube 34b, and the hole 38g, the pressure in the body cavity becomes higher than a predetermined pressure by allowing the carbon dioxide gas to escape. Therefore, a pressure reducing means for reducing, that is, relieving the pressure in the body cavity is configured.
- this predetermined pressure is determined from the relationship between the air flow rate and the cross-sectional area of the inner channels of the three exhaust tubes 34b.
- the cross-sectional area of the communication path is the smallest! Its cross-sectional area is set smaller than the smallest part. In other words, the area where the cross-sectional area of the air supply path is the smallest is set larger than the area where the cross-sectional area of the communication path is the smallest.
- FIG. 47 is a diagram for explaining a configuration according to the third embodiment.
- FIG. 47 is a partial sectional view of a disector 31 according to the third embodiment.
- the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.
- the relief valve 200 force is provided in the middle of the air supply tube 34! /, So that the pressure force in the air supply tube 34 exceeds the pressure set in the relief valve 200. Then, the carbon dioxide gas in the air supply tube 34 is discharged. Therefore, the pressure in the body cavity does not exceed a predetermined pressure.
- the relief valve 200 allows the gas of carbon dioxide and carbon dioxide to escape, thereby constituting a pressure reducing means for reducing, or relieving, so that the pressure in the body cavity does not exceed a predetermined pressure.
- the relief valve 200 may be provided on the proximal end side of the sheath 39 of the insertion portion 32. By providing the relief valve 200 on the proximal end side of the sheath 39, when the pressure in the sealed space 39a exceeds a predetermined pressure, the carbon dioxide carbon gas in the sealed space 39a is discharged.
- the above explanation also applies to the force harvester 41 that explains the example in which the relief valve 200 is provided in the sheath 39 of the air feed tube 34 or the insertion portion 32 in the configuration of the disector 31.
- the relief valve 200 can be provided in the air supply tube 44 or the insertion portion 42.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05785655.1A EP1815807B1 (en) | 2004-09-22 | 2005-09-22 | Organic tissue sampling device |
US11/453,329 US20060235450A1 (en) | 2004-09-22 | 2006-06-14 | Living body tissue harvesting apparatus |
US11/646,958 US8016821B2 (en) | 2004-09-22 | 2006-12-28 | Living body tissue harvesting apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-275752 | 2004-09-22 | ||
JP2004275747A JP2006087609A (ja) | 2004-09-22 | 2004-09-22 | 生体組織採取装置 |
JP2004-275747 | 2004-09-22 | ||
JP2004275752A JP4383297B2 (ja) | 2004-09-22 | 2004-09-22 | 生体組織切断用器具 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/453,329 Continuation US20060235450A1 (en) | 2004-09-22 | 2006-06-14 | Living body tissue harvesting apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2006033395A1 true WO2006033395A1 (ja) | 2006-03-30 |
Family
ID=36090149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017491 WO2006033395A1 (ja) | 2004-09-22 | 2005-09-22 | 生体組織採取装置 |
Country Status (3)
Country | Link |
---|---|
US (2) | US20060235450A1 (ja) |
EP (1) | EP1815807B1 (ja) |
WO (1) | WO2006033395A1 (ja) |
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US8043286B2 (en) | 2002-05-03 | 2011-10-25 | The Board Of Trustees Of The Leland Stanford Junior University | Method and apparatus for plasma-mediated thermo-electrical ablation |
WO2005122935A1 (ja) * | 2004-06-18 | 2005-12-29 | Olympus Corporation | 生体組織切断用器具 |
US9770230B2 (en) | 2006-06-01 | 2017-09-26 | Maquet Cardiovascular Llc | Endoscopic vessel harvesting system components |
CA2668407A1 (en) * | 2006-11-02 | 2008-05-15 | Peak Surgical, Inc. | Electric plasma-mediated cutting and coagulation of tissue and surgical apparatus |
US20080228207A1 (en) * | 2007-03-15 | 2008-09-18 | Terumo Cardiovascular Systems Corporation | Semi-automatic power assist for endoscopic vein dissector |
JP5191288B2 (ja) * | 2008-02-29 | 2013-05-08 | テルモ株式会社 | 塗布具 |
US8137345B2 (en) | 2009-01-05 | 2012-03-20 | Peak Surgical, Inc. | Electrosurgical devices for tonsillectomy and adenoidectomy |
US8465488B2 (en) * | 2010-03-16 | 2013-06-18 | Olympus Medical Systems Corporation | Endoscopic surgical instrument |
WO2012053530A1 (ja) | 2010-10-20 | 2012-04-26 | テルモ カーディオバスキュラー システムズ コーポレイション | 外科用処置具 |
US8979842B2 (en) | 2011-06-10 | 2015-03-17 | Medtronic Advanced Energy Llc | Wire electrode devices for tonsillectomy and adenoidectomy |
AU2014233486B2 (en) * | 2013-03-15 | 2018-11-15 | DePuy Synthes Products, Inc. | Viewing trocar with integrated prism for use with angled endoscope |
US9282952B2 (en) * | 2013-10-28 | 2016-03-15 | Terumo Cardiovascular Systems Corp. | Internal preservation fluid dispenser for endoscopic vessel harvester |
WO2016088404A1 (ja) * | 2014-12-04 | 2016-06-09 | テルモ株式会社 | 血管剥離デバイスおよび血管剥離方法 |
US20170189051A1 (en) * | 2015-12-31 | 2017-07-06 | Terumo Kabushiki Kaisha | Medical device and method |
US10076351B2 (en) * | 2015-12-31 | 2018-09-18 | Terumo Kabushiki Kaisha | Medical device and method |
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Also Published As
Publication number | Publication date |
---|---|
EP1815807B1 (en) | 2017-11-22 |
US20060235450A1 (en) | 2006-10-19 |
US8016821B2 (en) | 2011-09-13 |
US20070185481A1 (en) | 2007-08-09 |
EP1815807A1 (en) | 2007-08-08 |
EP1815807A4 (en) | 2014-02-26 |
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