US20090281374A1 - Endoscope Anchoring Device - Google Patents
Endoscope Anchoring Device Download PDFInfo
- Publication number
- US20090281374A1 US20090281374A1 US12/352,179 US35217909A US2009281374A1 US 20090281374 A1 US20090281374 A1 US 20090281374A1 US 35217909 A US35217909 A US 35217909A US 2009281374 A1 US2009281374 A1 US 2009281374A1
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- Prior art keywords
- elongated body
- body portion
- wire
- lumen
- anchoring mechanism
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- Abandoned
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00148—Holding or positioning arrangements using anchoring means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00018—Operational features of endoscopes characterised by signal transmission using electrical cables
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00082—Balloons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00087—Tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00094—Suction openings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00149—Holding or positioning arrangements using articulated arms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- 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
- A61B2017/00982—General structural features
- A61B2017/00986—Malecots, e.g. slotted tubes, of which the distal end is pulled to deflect side struts
-
- 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
- A61B2017/3484—Anchoring means, e.g. spreading-out umbrella-like structure
- A61B2017/3488—Fixation to inner organ or inner body tissue
Definitions
- Endoscopes are often inadvertently moved away from target locations within body lumens. This may result from forces accidentally applied to the endoscope, natural body motion, muscular activity (e.g., peristalsis) and/or resistances to the positioning of the endoscope accumulated during insertion. Such inadvertent movement of an endoscope relative to a target location may cause discomfort and/or trauma and may complicate and/or reduce the efficacy of the procedure.
- the present invention is directed to a device for accessing tissue within a body lumen, the device comprising an elongated body portion defining a lumen and an anchoring mechanism including an expanding structure on a distal portion of the elongated body portion, the anchoring mechanism moving the expanding structure from an insertion configuration in which the expanding structure is constricted against the device to an operative configuration in a body in which the expanding structure expands away from the device without altering a length of the anchoring mechanism in combination with a control mechanism for selectively engaging the anchoring mechanism.
- FIG. 1 shows a side view of a device according to a first exemplary embodiment of the present invention in position within a body lumen;
- FIG. 2 shows a side view of a device according to a second exemplary embodiment of the present invention in position within a body lumen;
- FIG. 3 shows a side view of a device according to a third exemplary embodiment of the present invention in position within a body lumen
- FIG. 4 shows a side view of a device according to a fourth exemplary embodiment of the present invention in position within a body lumen
- FIG. 5 shows a side view of a device according to a fifth exemplary embodiment of the present invention in position within a body lumen
- FIG. 6 shows a side view of a device according to a sixth exemplary embodiment of the present invention in position within a body lumen
- FIG. 7 shows a side view of a device according to a sixth exemplary embodiment of the present invention in position within a body lumen
- FIG. 8 shows a side view of a device according to a seventh exemplary embodiment of the present invention in position within a body lumen
- FIG. 9 shows a side view of a device according to an eight exemplary embodiment of the present invention in position within a body lumen.
- the present invention which may be further understood with reference to the following description and the appended drawings, relates to devices and methods for securing endoscopes in desired positions within body lumens.
- the present devices and methods may be used to secure an endoscope in a body lumen such as the duodenum, esophagus, large intestine, gastrointestinal tract, etc. It is submitted that, although the exemplary embodiments of the present invention are described with respect to particular lumens and procedures, they are not meant to limit the applicability of the present invention.
- Devices and methods according to the present invention employ an endoscope provided with a gripping portion formed on a distal end thereof.
- distal refers to a direction away from a user of the device while the term proximal refers to a direction approaching the user of the device (e.g., a physician).
- Proximal portions of the devices disclosed herein remain external to the patient when in an operative position while distal portions of the device are inserted into the body, for example, via a naturally occurring orifice and one or more body lumens.
- a device 100 includes an endoscope 100 with an anchoring mechanism 150 formed on a distal end 102 thereof.
- the anchoring mechanism 150 engages tissue (e.g., lumenal tissue 140 ) to resist movement of the endoscope 101 relative thereto.
- tissue e.g., lumenal tissue 140
- a user inserts the endoscope 101 through the lumen 140 to a target location.
- the target location is often specific to the procedure being performed and the anatomy of the individual patient and may, for example, be located using a vision system formed in the distal end 102 of the endoscope 101 .
- the endoscope 101 is preferably sufficiently flexible to conform to curvatures in the lumen 140 while maintaining a degree of longitudinal rigidity required to transmit to the distal end 102 forces applied to a proximal portion 104 to urge the endoscope 101 distally through the lumen 140 without bunching in the lumen 140 .
- the anchoring mechanism 150 includes a plurality of retractable ribs 151 coupled to an actuator 120 on a proximal end 104 of the endoscope 101 (i.e., formed on a portion of the endoscope 101 which remains accessible to the user throughout the procedure).
- the ribs 151 are preferably maintained in a retracted position in which they lie substantially flat along an outer surface 103 of the endoscope 101 to minimize a profile thereof during insertion and retraction of the endoscope through the lumen 140 to minimize trauma to lumenal tissue.
- the user operates the actuator 120 to move the ribs 151 away from this insertion configuration to a deployed configuration in which the ribs 151 extend radially outward from the outer surface 103 to frictionally engage the walls of the lumen 140 .
- Proximal ends of the ribs 151 may, for example, be coupled to a ring 153 slidably mounted within the outer surface 103 while distal ends of the ribs 151 are fixed in place. In the insertion configuration, the ring 153 is withdrawn proximally so that the ribs 151 lay flat against the outer surface 103 of the endoscope 101 .
- the ring 153 When the actuator 120 is operated to move the ribs 151 to the deployed configuration, the ring 153 is urged distally by, for example, a flexible pushing member 122 coupled between the ring 153 and the actuator 120 . As the ring 153 moves distally, the ribs 151 are longitudinally compressed causing them to bow radially outward (e.g., via slots in the outer surface 103 ). The actuator 120 may then be locked in this position using any known mechanism (e.g., friction fit, ratchet mechanism, etc.) to maintain the anchoring mechanism 150 in the deployed configuration until the user wishes to remove the endoscope 101 or to move it to another location in the lumen 140 .
- any known mechanism e.g., friction fit, ratchet mechanism, etc.
- the user moves the actuator 120 to its original position allowing the anchoring mechanism 150 to return to the insertion configuration with the ribs 151 lying flat within slots in the outer surface 103 .
- the anchoring mechanism may be moved from the deployed to the insertion configuration under a spring bias of the ribs 151 , through the motion of the actuator 120 of via any other suitable known mechanism.
- the bowed shape and lateral extent of the actuated ribs 151 is preferably selected to engage the walls of a lumen 140 with a desired force sufficient to hold the endoscope 101 in place in the lumen 140 , as shown in the embodiment of FIG. 1 , even when subjected to inadvertent forces of an expected magnitude.
- the pushing member 122 may be replaced by a system of filaments and pulleys to move the ring 153 proximally and distally as desired or by any other suitable mechanism or combination of mechanisms.
- the ribs 151 preferably comprise a flexible, substantially biocompatible material (e.g., a plastic such as Polyetheretherketone (“PEEK”), polyimide, etc. or a metal such as Nitinol, stainless steel, etc.). Furthermore, the ribs 151 may be substantially equally dispersed about the circumference of the endoscope 101 to center the endoscope 101 within the lumen 140 . Alternatively, as would be understood by those skilled in the art, if it is desired that a particular side of the endoscope 101 be located adjacent to a wall of the lumen 140 , the ribs 151 may be sized appropriately around the endoscope 101 to achieve any desired position of the distal end 102 within the lumen 140 .
- a plastic such as Polyetheretherketone (“PEEK”), polyimide, etc. or a metal such as Nitinol, stainless steel, etc.
- PEEK Polyetheretherketone
- the ribs 151 may be substantially equally dispersed about the circumference of the
- each of the ribs 151 may be the same or, in the alternative, may vary to achieve any desired distribution of the anchoring force to the portions of the walls of the lumen 140 .
- the contacting surface of each of the ribs 151 may be composed of a high friction material or, alternatively, the contacting surface may be a ribbed surface with a plurality of protrusions such as bumps to aid in gripping the walls of the lumen 140 , as those skilled in the art will understand.
- the ribs 151 may be formed of different shapes and need not be formed in the arc shape shown in FIG.
- the device 100 may comprise ribs 152 each of which contains a series of bends and curves along a longitudinal length thereof. As would be understood by those skilled in the art, the bends may increase a gripping force exerted thereby to the lumen 140 .
- the design of the ribs 152 may comprise any plurality of bends and curves therein.
- the endoscope 101 is inserted into the lumen 140 with the anchoring mechanism 150 in the insertion configuration (i.e., with the ribs 151 flat against the outer surface 103 ) to minimize trauma to the lumen 140 .
- the actuator 120 is moved to a distal-most position, thereby engaging the ribs 151 with the walls of the lumen 140 .
- the actuator 120 may further be provided with a locking feature or friction fit design to prevent the actuator 120 from sliding prematurely.
- the actuator 120 may once again be retracted and the endoscope 101 may be removed from the lumen 140 .
- the actuator 120 has been described as a slidable trigger, the actuator 120 may be triggered in any suitable manner (i.e., push-button trigger, etc.) without deviating from the spirit and scope of the present invention.
- the device 100 may be sized to minimally obstruct a working channel of an endoscope, so as to allow ample space for tool delivery therethrough.
- a device 200 includes an endoscope 201 which may be employed in a manner similar to that of the embodiment of FIG. 1 .
- the endoscope 201 may be provided with an actuator 220 that may be used to retract and expand a anchoring mechanism 250 located on a distal end 202 thereof.
- the anchoring mechanism 250 comprises a series of flexible wires 251 , each extending around a section of the distal end 202 of the endoscope 201 .
- the flexible wires 251 may be formed of a wire material such as Nitinol or stainless steel which can withstand high amounts of elastic deformation before a permanent deformation sets in, as those skilled in the art will understand.
- Each of the flexible wires 251 extends out of a corresponding pair of holes 255 placed separated from one another around the circumference of the distal end 202 substantially equally positioned along the length of the endoscope 201 .
- Each of the flexible wires 251 may be connected, by known means, to an internally located control cable or filament 222 extending to an actuator 220 on a proximal portion 204 of the endoscope 201 .
- Each of the flexible wires 251 acts as a radial spring, wherein each loop of the flexible wires 251 may be connected to the control cable or filament 222 .
- the anchoring mechanism 250 is maintained in an insertion configuration wherein each of the flexible wires 251 is constricted to fit snugly around a radial portion of the endoscope 201 .
- retraction of the control cable or filament via the actuator 220 may exert a force on each of the flexible wires 251 , pulling a length of each of the flexible wires 251 into the endoscope 201 and causing the restriction of each of the flexible wires 251 against the endoscope 201 .
- the user moves the actuator 220 distally to expand the flexible wire 251 radially outward to place a desired amount of pressure on the walls of the lumen 240 , securing the endoscope 201 in place.
- the actuation of the actuator 220 forces a length of each of the flexible wires 251 out of the endoscope 201 , thereby increasing a radial length of each loop formed therein.
- the increased radial length of each of the loops made by the flexible wires 251 causes a radial expansion, thereby engaging the flexible wires 251 with the inner walls of a lumen.
- the user operates the actuator 220 to move the anchoring mechanism 250 to the insertion configuration to release the endoscope 201 for movement through the lumen 240 to a new target location or for removal from the body.
- a device 300 comprises an endoscope 301 with a anchoring mechanism 350 located on a distal end 302 thereof.
- the anchoring mechanism 350 is withdrawn into an insertion configuration before the endoscope 301 is inserted into a lumen 340 and advanced therethrough.
- the anchoring mechanism 350 of the embodiment of FIG. 3 comprises a coil 351 extending around a portion of the distal end 302 of the endoscope 301 .
- the coil 351 may be formed of any suitable biocompatible material such as, for example, Nitinol, preformed stainless steel wire cables, similar to snare loop cables or polymers.
- a proximal end of the coil 351 may be connected to a deploying mechanism which is, in turn, coupled to an actuator (not shown) as in the previous embodiments.
- the deploying mechanism may include, for example, a ring 353 coupled to the actuator via a cable or filament(s) 322 to move the anchoring mechanism 350 between the insertion configuration in which the wire 351 is snugly received around the distal end 302 of the endoscope 301 and a deployed configuration in which the wire 351 is radially expanded to engage tissue of the lumen 340 to anchor the distal end 302 in a target position.
- a material with shape memory properties herein can retain a deployment shape (i.e., an expanded coil shape) for an extended period of time while strained to a high level, such as in the insertion configuration, as detailed below.
- Actuation of the coil 351 which may exhibit shape memory properties as noted above, may be similar to that of the embodiment of FIG. 2 . Specifically, actuation of a proximally located actuator (not shown) may cause the cable or filament 322 to move distally, thereby causing the coil 351 to expand radially and conform to the walls of the lumen 340 .
- a retraction of the actuator may cause the cable or filament 322 to move proximally, thereby shortening the radial length of the coil 351 and causing a constriction of the coil 351 against the endoscope 301 .
- the outer surface of the distal end 302 may include a recess within which the wire 351 may be received when in the insertion configuration so that the outer surface is substantially smooth.
- the size and shape of the wire 351 is preferably selected so that a desired anchoring force is applied to the tissue of the lumen 340 (i.e., a desired frictional engagement is established between the endoscope 301 , and the surrounding tissue) when the anchoring mechanism is in the deployed configuration.
- the wire 351 may be formed, for example, as a substantially planar ribbon with a surface that may be textured or otherwise treated or coated to enhance the frictional engagement of the surrounding tissue.
- the endoscope 301 may include an optional cover which, when in the insertion configuration, eliminates contact between the wire 351 and the surrounding tissue.
- the wire 351 may have a cross-section that is substantially circular, elliptical, triangular, square, or of any other desired shape.
- the employment of cross sectional shapes other than round, smooth shapes provides corners or edges that may aid in anchoring the wire 351 in the body and provide an additional locking force thereto.
- the surface of the wire may be smooth or ribbed with a plurality of protrusions to increase the gripping ability of the anchoring mechanism 350 .
- the anchoring mechanism 450 comprises a flexible wire 451 which is formed as a unitary element with a cable or filament extending through an endoscope 401 .
- a distal end of the anchoring wire 451 may be attached to a joint portion 452 on the endoscope 401 while a proximal end of the anchoring wire 451 may be connected to an actuator (not shown) located on a proximal portion of the endoscope 401 .
- the anchoring wire 451 may span the longitudinal length of the endoscope 401 and extend therefrom via an opening or slit 460 located on a distal length.
- a distal length of the anchoring wire 451 which is comprised of a shape memory material such as Nitinol, may be shape memorized in a shape such as a series of petals or a series of bends which expand radially outward from the endoscope 401 when actuated.
- a shape memory material such as Nitinol
- the anchoring wire 451 may move into its memorized shape through the application of heat, through the action of body heat, by applying a small electrical jolt thereto.
- the anchoring wire 451 may run alongside a portion of the outer body of the endoscope 401 , wherein the wire 451 may be joined to the endoscope 401 along a distal length thereof with length of the joint portion 452 being indicative of a longitudinal length of the anchoring portion of the anchoring mechanism 450 .
- the anchoring mechanism 550 may comprise an anchoring wire 551 which extends out of an endoscope 501 via an opening 560 provided on a distal portion thereof.
- the anchoring wire 551 is further attached to a distal portion of the endoscope 501 at a joint portion 552 .
- an actuator located on a proximal portion of the endoscope 501 may be retracted to keep a portion of the anchoring wire 551 extending between the joint portion 552 and the opening 561 constricted against the body of the endoscope 501 . Accordingly, when the anchoring mechanism 550 is actuated, as shown in FIG.
- a length of the anchoring wire may extend out of the opening 561 and may be further actuated to assume a shape memorized configuration which, in this embodiment, may be a coiled shape.
- a plurality of anchoring wires 551 may be provided wherein, when actuated, the plurality of anchoring wires 551 extend around the circumference of the endoscope 501 and provide an anchoring means on all sides thereof.
- the anchoring mechanisms according to any of the disclosed embodiments of the present invention may be employed in a sterility sheath or other device through which an endoscope or other device is to be inserted to anchor the sheath in a desired location within a body lumen.
- Such an embodiment may add to the utility of the present invention when traversing difficult regions of the digestive tract and through other tortuous parts of the body, as those skilled in the art will understand.
- the anchoring device of the present invention may be integral to an endoscope or, alternatively, can be fixedly or releasably attachable to an endoscope.
- the anchoring device need not cover the full length of the endoscope to which it is attached but rather, may alternately be attached only to a distal portion thereof.
- the anchoring mechanism may be actuated in a manner similar to that of the embodiments of FIGS. 1-4 , wherein the actuating cable or filament may extend either outside of the endoscope or within a working channel of the endoscope.
- the anchoring device may be integral to a sheath, wherein wires of the anchoring device may be embedded within the sheath and the distally located anchoring mechanism may extend out of the device along a distal length.
- the device of the present invention may be employed in a sterility sheath.
- any of the embodiments of the invention may be incorporated in an endoscope or other device through a surrounding sheath.
- the user moves the endoscope or other device through the sheath to a target location and deploys the anchoring mechanism.
- the anchoring mechanism pushes the flexible sheath out ward into contact with the lumenal tissue to anchor the sheath and the endoscope in place.
- the device of the present invention may comprise any plurality of anchoring wires, wherein the increased number of wires may directly correlate to an increased gripping force exerted by the anchoring mechanism or to a more evenly distributed anchoring force, as those skilled in the art will understand.
- the device of the present invention may employ suction to aid in anchoring the endoscope at a target site within the body.
- an endoscope 600 is provided with an opening 602 fluidly coupled to a suction lumen (not shown) along a lateral side of a distal portion thereof.
- the opening 602 is sized to permit a cone 604 to extend therefrom.
- the cone 604 is a hollow element extending from a minimum diameter at a proximal lip 606 to a maximum diameter at a distal lip 608 .
- the proximal lip 606 further comprises a flange 610 that flutes outward to assume a diameter greater than a diameter of the proximal lip 606 .
- the flange 610 may preferably be permanently attached to the endoscope 600 to prevent the cone 604 from being dislodged therefrom.
- the cone 604 is formed of a substantially flexible biocompatible material to permit proximal and/or distal deflection thereof during insertion to a target location in a body lumen 640 .
- suction is applied at a proximal end of a lumen 614 of the endoscope 600 to cause the cone 604 to attach to a wall of the body lumen 640 .
- a guiding device 612 is then inserted into the lumen 614 to a location extending partially laterally out of the lumen 614 and into the cone 604 , as shown in FIG. 8 .
- a guide wire 616 is actuated to extend distally out of the guiding device 612 and attach to the wall of the body lumen 640 .
- An attachment 618 of the guide wire 616 may comprise, for example, a knot, hook, latch, or other attachment mechanism known in the art.
- suction applied to the cone 604 helps maintain a position of the cone 604 against the wall of the body lumen 640 while the attachment 618 of the guide wire 616 locks the endoscope and further aids in preventing longitudinal movement of the cone against the wall of the body lumen 640 .
- the embodiment of FIG. 8 permits a centering of a position of the endoscope relative to walls of the body lumen 640 .
- the cone 604 may assume any suitable dimension to permit any positioning of the endoscope 600 relative the body lumen 640 , as those skilled in the art will understand.
- FIG. 9 depicts another alternate embodiment of the present invention, in which a suction opening is formed through a wall of an endoscope 700 .
- the endoscope 700 is formed substantially similarly to the endoscope 100 with the exception of a suction window 702 formed on a portion of an outer wall thereof.
- the suction window 702 may be dimensioned to suit the requirement of a body lumen 740 into which the endoscope 700 is inserted.
- the suction window 702 may extend over any portion of the endoscope 700 wall without deviating from the spirit and scope of the present invention.
- a visualization window 704 may be formed on the endoscope 700 on a location opposite the suction window 702 .
- the visualization window 704 may be formed as an outlet for distal ends of optical fibers extending longitudinally through the endoscope 700 , as those skilled in the art will understand. Alternatively, the visualization window 704 may permit visualization of the body lumen 740 using any means known in the art. Positioning the visualization window 704 opposite the suction window 702 allows an unobstructed view of the body lumen 740 in an operative configuration. Specifically, when a suction force is applied to a proximal portion of the lumen 706 of the endoscope 700 , the suction window 702 is automatically drawn into contact with an adjacent surface of the body lumen 640 , thus centering the visualization window 704 therein.
Abstract
A device for accessing tissue within a body lumen comprises an elongated body portion defining a lumen and an anchoring mechanism including an expanding structure on a distal portion of the elongated body portion. The anchoring mechanism moves the expanding structure from an insertion configuration in which the expanding structure is constricted against the device to an operative configuration in a body in which the expanding structure expands away from the device without altering a length of the anchoring mechanism in combination with a control mechanism for selectively engaging the anchoring mechanism.
Description
- This application claims the priority to the U.S. Provisional Application Ser. No. 61/020,556, entitled “Endoscope Anchoring Device” filed Jan. 11, 2008. The specification of the above-identified application is incorporated herewith by reference.
- Endoscopes are often inadvertently moved away from target locations within body lumens. This may result from forces accidentally applied to the endoscope, natural body motion, muscular activity (e.g., peristalsis) and/or resistances to the positioning of the endoscope accumulated during insertion. Such inadvertent movement of an endoscope relative to a target location may cause discomfort and/or trauma and may complicate and/or reduce the efficacy of the procedure.
- The present invention is directed to a device for accessing tissue within a body lumen, the device comprising an elongated body portion defining a lumen and an anchoring mechanism including an expanding structure on a distal portion of the elongated body portion, the anchoring mechanism moving the expanding structure from an insertion configuration in which the expanding structure is constricted against the device to an operative configuration in a body in which the expanding structure expands away from the device without altering a length of the anchoring mechanism in combination with a control mechanism for selectively engaging the anchoring mechanism.
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FIG. 1 shows a side view of a device according to a first exemplary embodiment of the present invention in position within a body lumen; -
FIG. 2 shows a side view of a device according to a second exemplary embodiment of the present invention in position within a body lumen; -
FIG. 3 shows a side view of a device according to a third exemplary embodiment of the present invention in position within a body lumen; -
FIG. 4 shows a side view of a device according to a fourth exemplary embodiment of the present invention in position within a body lumen; -
FIG. 5 shows a side view of a device according to a fifth exemplary embodiment of the present invention in position within a body lumen; -
FIG. 6 shows a side view of a device according to a sixth exemplary embodiment of the present invention in position within a body lumen; -
FIG. 7 shows a side view of a device according to a sixth exemplary embodiment of the present invention in position within a body lumen; -
FIG. 8 shows a side view of a device according to a seventh exemplary embodiment of the present invention in position within a body lumen; and -
FIG. 9 shows a side view of a device according to an eight exemplary embodiment of the present invention in position within a body lumen. - The present invention, which may be further understood with reference to the following description and the appended drawings, relates to devices and methods for securing endoscopes in desired positions within body lumens. For example, the present devices and methods may be used to secure an endoscope in a body lumen such as the duodenum, esophagus, large intestine, gastrointestinal tract, etc. It is submitted that, although the exemplary embodiments of the present invention are described with respect to particular lumens and procedures, they are not meant to limit the applicability of the present invention.
- Devices and methods according to the present invention employ an endoscope provided with a gripping portion formed on a distal end thereof. It is noted that the use of the term distal herein refers to a direction away from a user of the device while the term proximal refers to a direction approaching the user of the device (e.g., a physician). Proximal portions of the devices disclosed herein remain external to the patient when in an operative position while distal portions of the device are inserted into the body, for example, via a naturally occurring orifice and one or more body lumens.
- As shown in
FIG. 1 , adevice 100 according to a first embodiment of the invention includes anendoscope 100 with ananchoring mechanism 150 formed on adistal end 102 thereof. Theanchoring mechanism 150 engages tissue (e.g., lumenal tissue 140) to resist movement of theendoscope 101 relative thereto. In use, a user inserts theendoscope 101 through thelumen 140 to a target location. Those skilled in the art will understand that the target location is often specific to the procedure being performed and the anatomy of the individual patient and may, for example, be located using a vision system formed in thedistal end 102 of theendoscope 101. As would be further understood by those skilled in the art, theendoscope 101 is preferably sufficiently flexible to conform to curvatures in thelumen 140 while maintaining a degree of longitudinal rigidity required to transmit to thedistal end 102 forces applied to aproximal portion 104 to urge theendoscope 101 distally through thelumen 140 without bunching in thelumen 140. - The
anchoring mechanism 150 includes a plurality ofretractable ribs 151 coupled to anactuator 120 on aproximal end 104 of the endoscope 101 (i.e., formed on a portion of theendoscope 101 which remains accessible to the user throughout the procedure). Theribs 151 are preferably maintained in a retracted position in which they lie substantially flat along anouter surface 103 of theendoscope 101 to minimize a profile thereof during insertion and retraction of the endoscope through thelumen 140 to minimize trauma to lumenal tissue. Then, when theendoscope 101 has reached a desired location within thelumen 140 and it is desired to maintain theendoscope 101 in this position, the user operates theactuator 120 to move theribs 151 away from this insertion configuration to a deployed configuration in which theribs 151 extend radially outward from theouter surface 103 to frictionally engage the walls of thelumen 140. Proximal ends of theribs 151 may, for example, be coupled to aring 153 slidably mounted within theouter surface 103 while distal ends of theribs 151 are fixed in place. In the insertion configuration, thering 153 is withdrawn proximally so that theribs 151 lay flat against theouter surface 103 of theendoscope 101. When theactuator 120 is operated to move theribs 151 to the deployed configuration, thering 153 is urged distally by, for example, aflexible pushing member 122 coupled between thering 153 and theactuator 120. As thering 153 moves distally, theribs 151 are longitudinally compressed causing them to bow radially outward (e.g., via slots in the outer surface 103). Theactuator 120 may then be locked in this position using any known mechanism (e.g., friction fit, ratchet mechanism, etc.) to maintain theanchoring mechanism 150 in the deployed configuration until the user wishes to remove theendoscope 101 or to move it to another location in thelumen 140. At this point, the user moves theactuator 120 to its original position allowing theanchoring mechanism 150 to return to the insertion configuration with theribs 151 lying flat within slots in theouter surface 103. Those skilled in the art will understand that the anchoring mechanism may be moved from the deployed to the insertion configuration under a spring bias of theribs 151, through the motion of theactuator 120 of via any other suitable known mechanism. - The bowed shape and lateral extent of the actuated
ribs 151 is preferably selected to engage the walls of alumen 140 with a desired force sufficient to hold theendoscope 101 in place in thelumen 140, as shown in the embodiment ofFIG. 1 , even when subjected to inadvertent forces of an expected magnitude. As would be understood by those skilled in the art, the pushingmember 122 may be replaced by a system of filaments and pulleys to move thering 153 proximally and distally as desired or by any other suitable mechanism or combination of mechanisms. - The
ribs 151 preferably comprise a flexible, substantially biocompatible material (e.g., a plastic such as Polyetheretherketone (“PEEK”), polyimide, etc. or a metal such as Nitinol, stainless steel, etc.). Furthermore, theribs 151 may be substantially equally dispersed about the circumference of theendoscope 101 to center theendoscope 101 within thelumen 140. Alternatively, as would be understood by those skilled in the art, if it is desired that a particular side of theendoscope 101 be located adjacent to a wall of thelumen 140, theribs 151 may be sized appropriately around theendoscope 101 to achieve any desired position of thedistal end 102 within thelumen 140. - In addition, the length (extent parallel to a longitudinal axis of the endoscope 101) and width (extent perpendicular to the longitudinal axis) of each of the
ribs 151 may be the same or, in the alternative, may vary to achieve any desired distribution of the anchoring force to the portions of the walls of thelumen 140. Furthermore, the contacting surface of each of theribs 151 may be composed of a high friction material or, alternatively, the contacting surface may be a ribbed surface with a plurality of protrusions such as bumps to aid in gripping the walls of thelumen 140, as those skilled in the art will understand. Furthermore, theribs 151 may be formed of different shapes and need not be formed in the arc shape shown inFIG. 1 . For example, as shown inFIG. 2 , thedevice 100 may compriseribs 152 each of which contains a series of bends and curves along a longitudinal length thereof. As would be understood by those skilled in the art, the bends may increase a gripping force exerted thereby to thelumen 140. The design of theribs 152 may comprise any plurality of bends and curves therein. - As described above, the
endoscope 101 is inserted into thelumen 140 with theanchoring mechanism 150 in the insertion configuration (i.e., with theribs 151 flat against the outer surface 103) to minimize trauma to thelumen 140. Once a user of theendoscope 101 has traversed theendoscope 101 to a target area, theactuator 120 is moved to a distal-most position, thereby engaging theribs 151 with the walls of thelumen 140. Theactuator 120 may further be provided with a locking feature or friction fit design to prevent theactuator 120 from sliding prematurely. When a designated procedure is complete, theactuator 120 may once again be retracted and theendoscope 101 may be removed from thelumen 140. Although theactuator 120 has been described as a slidable trigger, theactuator 120 may be triggered in any suitable manner (i.e., push-button trigger, etc.) without deviating from the spirit and scope of the present invention. Furthermore, it is noted that thedevice 100 may be sized to minimally obstruct a working channel of an endoscope, so as to allow ample space for tool delivery therethrough. - As shown in
FIG. 3 , adevice 200 according to a second embodiment of the present invention includes anendoscope 201 which may be employed in a manner similar to that of the embodiment ofFIG. 1 . Theendoscope 201 may be provided with anactuator 220 that may be used to retract and expand aanchoring mechanism 250 located on adistal end 202 thereof. Theanchoring mechanism 250 comprises a series offlexible wires 251, each extending around a section of thedistal end 202 of theendoscope 201. Theflexible wires 251 may be formed of a wire material such as Nitinol or stainless steel which can withstand high amounts of elastic deformation before a permanent deformation sets in, as those skilled in the art will understand. Each of theflexible wires 251 extends out of a corresponding pair ofholes 255 placed separated from one another around the circumference of thedistal end 202 substantially equally positioned along the length of theendoscope 201. Each of theflexible wires 251 may be connected, by known means, to an internally located control cable orfilament 222 extending to anactuator 220 on a proximal portion 204 of theendoscope 201. Each of theflexible wires 251 acts as a radial spring, wherein each loop of theflexible wires 251 may be connected to the control cable orfilament 222. - As described above in regard to the
endoscope 101, when theendoscope 201 is being traversed to a target area in the body, theanchoring mechanism 250 is maintained in an insertion configuration wherein each of theflexible wires 251 is constricted to fit snugly around a radial portion of theendoscope 201. Specifically, retraction of the control cable or filament via theactuator 220 may exert a force on each of theflexible wires 251, pulling a length of each of theflexible wires 251 into theendoscope 201 and causing the restriction of each of theflexible wires 251 against theendoscope 201. Once a target area has been reached, the user moves theactuator 220 distally to expand theflexible wire 251 radially outward to place a desired amount of pressure on the walls of thelumen 240, securing theendoscope 201 in place. Specifically, the actuation of theactuator 220 forces a length of each of theflexible wires 251 out of theendoscope 201, thereby increasing a radial length of each loop formed therein. The increased radial length of each of the loops made by theflexible wires 251 causes a radial expansion, thereby engaging theflexible wires 251 with the inner walls of a lumen. When the procedure has been completed, the user operates theactuator 220 to move theanchoring mechanism 250 to the insertion configuration to release theendoscope 201 for movement through thelumen 240 to a new target location or for removal from the body. - As shown in
FIG. 4 , adevice 300 according to yet another embodiment of the present invention comprises anendoscope 301 with aanchoring mechanism 350 located on adistal end 302 thereof. As with the previously described embodiments, theanchoring mechanism 350 is withdrawn into an insertion configuration before theendoscope 301 is inserted into alumen 340 and advanced therethrough. Theanchoring mechanism 350 of the embodiment ofFIG. 3 comprises acoil 351 extending around a portion of thedistal end 302 of theendoscope 301. As would be understood by those skilled in the art thecoil 351 may be formed of any suitable biocompatible material such as, for example, Nitinol, preformed stainless steel wire cables, similar to snare loop cables or polymers. - A proximal end of the
coil 351 may be connected to a deploying mechanism which is, in turn, coupled to an actuator (not shown) as in the previous embodiments. The deploying mechanism may include, for example, aring 353 coupled to the actuator via a cable or filament(s) 322 to move theanchoring mechanism 350 between the insertion configuration in which thewire 351 is snugly received around thedistal end 302 of theendoscope 301 and a deployed configuration in which thewire 351 is radially expanded to engage tissue of thelumen 340 to anchor thedistal end 302 in a target position. It may be particularly advantageous to employ a material with shape memory properties herein, as such a material can retain a deployment shape (i.e., an expanded coil shape) for an extended period of time while strained to a high level, such as in the insertion configuration, as detailed below. Actuation of thecoil 351, which may exhibit shape memory properties as noted above, may be similar to that of the embodiment ofFIG. 2 . Specifically, actuation of a proximally located actuator (not shown) may cause the cable orfilament 322 to move distally, thereby causing thecoil 351 to expand radially and conform to the walls of thelumen 340. Conversely, a retraction of the actuator (not shown) may cause the cable orfilament 322 to move proximally, thereby shortening the radial length of thecoil 351 and causing a constriction of thecoil 351 against theendoscope 301. As would be understood by those skilled in the art, the outer surface of thedistal end 302 may include a recess within which thewire 351 may be received when in the insertion configuration so that the outer surface is substantially smooth. Thewire 351 can extend out of aproximal slit 360 formed on the outer surface of theendoscope 301 and coils around thedistal end 302 to adistal slit 361 through which thewire 351 re-enters theendoscope 301 to which the distal end of thewire 351 is attached, for example, via any known means such as bonding or welding. In an alternate embodiment, thewire 351 may be attached to a component such as a ring, which is, in turn, attached or releasably attached to theendoscope 301. - As would be understood by those skilled in the art, the size and shape of the
wire 351 is preferably selected so that a desired anchoring force is applied to the tissue of the lumen 340 (i.e., a desired frictional engagement is established between theendoscope 301, and the surrounding tissue) when the anchoring mechanism is in the deployed configuration. Thewire 351 may be formed, for example, as a substantially planar ribbon with a surface that may be textured or otherwise treated or coated to enhance the frictional engagement of the surrounding tissue. In these cases, theendoscope 301 may include an optional cover which, when in the insertion configuration, eliminates contact between thewire 351 and the surrounding tissue. Thewire 351 may have a cross-section that is substantially circular, elliptical, triangular, square, or of any other desired shape. The employment of cross sectional shapes other than round, smooth shapes provides corners or edges that may aid in anchoring thewire 351 in the body and provide an additional locking force thereto. Additionally, the surface of the wire may be smooth or ribbed with a plurality of protrusions to increase the gripping ability of theanchoring mechanism 350. - In a further embodiment of the present invention, as shown in
FIG. 5 , theanchoring mechanism 450 comprises aflexible wire 451 which is formed as a unitary element with a cable or filament extending through anendoscope 401. A distal end of theanchoring wire 451 may be attached to ajoint portion 452 on theendoscope 401 while a proximal end of theanchoring wire 451 may be connected to an actuator (not shown) located on a proximal portion of theendoscope 401. Theanchoring wire 451 may span the longitudinal length of theendoscope 401 and extend therefrom via an opening or slit 460 located on a distal length. A distal length of theanchoring wire 451, which is comprised of a shape memory material such as Nitinol, may be shape memorized in a shape such as a series of petals or a series of bends which expand radially outward from theendoscope 401 when actuated. Those skilled in the art will understand that theanchoring wire 451 may move into its memorized shape through the application of heat, through the action of body heat, by applying a small electrical jolt thereto. Alternately, theanchoring wire 451 may run alongside a portion of the outer body of theendoscope 401, wherein thewire 451 may be joined to theendoscope 401 along a distal length thereof with length of thejoint portion 452 being indicative of a longitudinal length of the anchoring portion of theanchoring mechanism 450. - In a further embodiment, as shown in
FIGS. 6 and 7 , theanchoring mechanism 550 may comprise ananchoring wire 551 which extends out of anendoscope 501 via an opening 560 provided on a distal portion thereof. Theanchoring wire 551 is further attached to a distal portion of theendoscope 501 at a joint portion 552. In an insertion configuration, an actuator (not shown) located on a proximal portion of theendoscope 501 may be retracted to keep a portion of theanchoring wire 551 extending between the joint portion 552 and the opening 561 constricted against the body of theendoscope 501. Accordingly, when theanchoring mechanism 550 is actuated, as shown inFIG. 7 , a length of the anchoring wire may extend out of the opening 561 and may be further actuated to assume a shape memorized configuration which, in this embodiment, may be a coiled shape. In an alternate embodiment, a plurality of anchoringwires 551 may be provided wherein, when actuated, the plurality of anchoringwires 551 extend around the circumference of theendoscope 501 and provide an anchoring means on all sides thereof. - It is submitted that the features of each of the aforementioned embodiments of the present invention may be combined in any manner to create a device having desired performance characteristics without deviating from the spirit and scope of the present invention. For example, the anchoring mechanisms according to any of the disclosed embodiments of the present invention may be employed in a sterility sheath or other device through which an endoscope or other device is to be inserted to anchor the sheath in a desired location within a body lumen. Such an embodiment may add to the utility of the present invention when traversing difficult regions of the digestive tract and through other tortuous parts of the body, as those skilled in the art will understand. Those skilled in the art will understand that, although devices such as the endoscopes and sheaths described herein are often inserted into body lumens via naturally occurring body orifices, these devices may be inserted into hollow organs or body lumens via surgical openings, wounds, etc. as desired without impacting the operation of the anchoring mechanisms.
- In another embodiment, the anchoring device of the present invention may be integral to an endoscope or, alternatively, can be fixedly or releasably attachable to an endoscope. Furthermore, the anchoring device need not cover the full length of the endoscope to which it is attached but rather, may alternately be attached only to a distal portion thereof. In such an embodiment, the anchoring mechanism may be actuated in a manner similar to that of the embodiments of
FIGS. 1-4 , wherein the actuating cable or filament may extend either outside of the endoscope or within a working channel of the endoscope. In another embodiment, the anchoring device may be integral to a sheath, wherein wires of the anchoring device may be embedded within the sheath and the distally located anchoring mechanism may extend out of the device along a distal length. As indicated above, the device of the present invention may be employed in a sterility sheath. Alternatively, any of the embodiments of the invention may be incorporated in an endoscope or other device through a surrounding sheath. In such an embodiment, the user moves the endoscope or other device through the sheath to a target location and deploys the anchoring mechanism. The anchoring mechanism pushes the flexible sheath out ward into contact with the lumenal tissue to anchor the sheath and the endoscope in place. - In yet another alternate embodiment, the device of the present invention, as described in
FIGS. 3-5 may comprise any plurality of anchoring wires, wherein the increased number of wires may directly correlate to an increased gripping force exerted by the anchoring mechanism or to a more evenly distributed anchoring force, as those skilled in the art will understand. - In another alternate embodiment, the device of the present invention may employ suction to aid in anchoring the endoscope at a target site within the body. Specifically, as shown in
FIG. 8 , anendoscope 600 is provided with anopening 602 fluidly coupled to a suction lumen (not shown) along a lateral side of a distal portion thereof. Theopening 602 is sized to permit acone 604 to extend therefrom. Thecone 604 is a hollow element extending from a minimum diameter at aproximal lip 606 to a maximum diameter at adistal lip 608. Theproximal lip 606 further comprises aflange 610 that flutes outward to assume a diameter greater than a diameter of theproximal lip 606. Theflange 610 may preferably be permanently attached to theendoscope 600 to prevent thecone 604 from being dislodged therefrom. - The
cone 604 is formed of a substantially flexible biocompatible material to permit proximal and/or distal deflection thereof during insertion to a target location in abody lumen 640. Once the target location has been reached, suction is applied at a proximal end of alumen 614 of theendoscope 600 to cause thecone 604 to attach to a wall of thebody lumen 640. A guidingdevice 612 is then inserted into thelumen 614 to a location extending partially laterally out of thelumen 614 and into thecone 604, as shown inFIG. 8 . Aguide wire 616 is actuated to extend distally out of the guidingdevice 612 and attach to the wall of thebody lumen 640. Anattachment 618 of theguide wire 616 may comprise, for example, a knot, hook, latch, or other attachment mechanism known in the art. Thus, suction applied to thecone 604 helps maintain a position of thecone 604 against the wall of thebody lumen 640 while theattachment 618 of theguide wire 616 locks the endoscope and further aids in preventing longitudinal movement of the cone against the wall of thebody lumen 640. The embodiment ofFIG. 8 permits a centering of a position of the endoscope relative to walls of thebody lumen 640. Alternatively, thecone 604 may assume any suitable dimension to permit any positioning of theendoscope 600 relative thebody lumen 640, as those skilled in the art will understand. -
FIG. 9 depicts another alternate embodiment of the present invention, in which a suction opening is formed through a wall of anendoscope 700. Specifically, theendoscope 700 is formed substantially similarly to theendoscope 100 with the exception of asuction window 702 formed on a portion of an outer wall thereof. Thesuction window 702 may be dimensioned to suit the requirement of abody lumen 740 into which theendoscope 700 is inserted. Furthermore, thesuction window 702 may extend over any portion of theendoscope 700 wall without deviating from the spirit and scope of the present invention. Avisualization window 704 may be formed on theendoscope 700 on a location opposite thesuction window 702. Thevisualization window 704 may be formed as an outlet for distal ends of optical fibers extending longitudinally through theendoscope 700, as those skilled in the art will understand. Alternatively, thevisualization window 704 may permit visualization of thebody lumen 740 using any means known in the art. Positioning thevisualization window 704 opposite thesuction window 702 allows an unobstructed view of thebody lumen 740 in an operative configuration. Specifically, when a suction force is applied to a proximal portion of thelumen 706 of theendoscope 700, thesuction window 702 is automatically drawn into contact with an adjacent surface of thebody lumen 640, thus centering thevisualization window 704 therein. - The present invention has been described with reference to specific exemplary embodiments. Those skilled in the art will understand that various modifications and changes may be made to the embodiments. The specification is, therefore, to be regarded in an illustrative rather than a restrictive sense.
Claims (20)
1. A device for accessing tissue within a body lumen, comprising:
an elongated body portion defining a lumen;
an anchoring mechanism including an expanding structure on a distal portion of the elongated body portion, the anchoring mechanism moving the expanding structure from an insertion configuration in which the expanding structure is constricted against the device to an operative configuration in a body in which the expanding structure expands away from the device without altering a length of the anchoring mechanism; and
a control mechanism selectively engaging the anchoring mechanism.
2. The device according to claim 1 , further comprising:
a control wire or filament connected to the anchoring mechanism at a distal end and the control mechanism at a proximal end.
3. The device according to claim 2 , wherein the anchoring mechanism comprises a retractable rib mechanism comprising at least two longitudinally spanning ribs.
4. The device according to claim 3 , wherein a plurality of slits are located along two radial circumferences of a longitudinal length of the elongated body portion and each of the ribs extends out of the device through a first slit and extends back into the device through a second slit, and wherein the second slit is longitudinally aligned with the first slit.
5. The device according to claim 3 , wherein a material of the ribs is one of a flexible plastic and a flexible metal.
6. The device according to claim 3 , wherein a contacting surface of each rib is comprises one or both of a high friction material coating and a ribbed surface with at least one protrusion extending outward to aid in gripping an inner wall of a lumen.
7. The device according to claim 1 , wherein the control mechanism is an actuator handle which moves in a proximal direction to align the ribs with respect to the elongated body portion.
8. The device according to claim 7 , wherein the elongated body portion comprises a plurality of slits on a distal portion and wherein moving the actuator in a distal direction pushes the ribs distally and causes the ribs to protrude through the slits in a bowed shape.
9. The device according to claim 1 , wherein the anchoring mechanism comprises a plurality of flexible wires extending radially around a plurality of sections located at a distal end of the elongated body portion.
10. The device according to claim 9 wherein each flexible wire extends from a proximal connection to a control wire connected to the control mechanism to a distal end extending out of a pair of holes placed on a longitudinal length of the elongated body portion.
11. The device according to claim 10 , wherein, when in the operative position, the plurality of flexible wires expands radially outward and conforms to a shape of one of a body lumen and cavity and wherein, when in a non-operative position, the plurality of flexible wires constrict radially inward and align to an outer wall of the device.
12. The device according to claim 1 , wherein the anchoring mechanism comprises one of a flexible wire and a ribbon coiled around a distal length of the elongated body portion.
13. The device according to claim 12 , wherein one of the flexible wire and the ribbon extends from a proximal connection to the control mechanism and out of a proximal opening in the elongated body portion and terminates in a distal opening in the elongated body portion, assuming a coiled shape between the two openings.
14. The device according to claim 12 , wherein, when in the operative position, a diameter of each coil of the coiled one of the flexible wire and the ribbon expands to conform to one of a body lumen and a body cavity and, wherein, when in a non-operative position, a diameter of each coil constricts radially inward and aligns to an outer wall of the elongated body portion.
15. A device for accessing tissue within a body lumen, comprising:
an elongated body portion defining a lumen; and
an anchoring mechanism including a wire extending through the device, exiting the device at a distal opening and extending proximally along an outer surface of the elongated body portion to attach to a joint portion of the elongated body portion, the anchoring mechanism moving the wire between an insertion configuration in which the wire is seated flush against the outer surface of the elongated body portion and an operative configuration in which the wire extends away from the device to engage lumenal tissue.
16. The device according to claim 15 , wherein the anchoring mechanism further comprises an actuator coupled to a proximal portion of the wire so that movement of the actuator in a proximal direction, draws the wire into the insertion configuration.
17. The device according to claim 15 , wherein the wire is formed of a shape-memory material, a memorized shape of a portion of the wire extending from the distal opening along the outer surface of the elongated body portion is one of substantially circular, elliptical, petal-shaped, triangular and rectangular.
18. A device for accessing tissue within a body lumen, comprising:
an elongated body portion defining a lumen; and
an anchoring mechanism including an opening formed on a distal portion of the elongated body portion, the opening permitting an application of a suction force applied at a proximal end of the device to a target portion of the body lumen to engage lumenal tissue.
19. The device of claim 18 , further comprising a conical abutment attached to the opening, the conical abutment extending radially distally out of the elongated body portion to apply the suction force to the lumenal tissue.
20. The device of claim 18 , further comprising a visualization window formed on a portion of the endoscope radially opposite a location of the anchoring mechanism.
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US15/365,390 US10433714B2 (en) | 2008-01-11 | 2016-11-30 | Endoscope anchoring device |
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US15/365,390 Expired - Fee Related US10433714B2 (en) | 2008-01-11 | 2016-11-30 | Endoscope anchoring device |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120191181A1 (en) * | 2007-04-27 | 2012-07-26 | Kassab Ghassan S | Systems and methods for localization of a puncture site relative to a mammalian tissue of interest |
US20130242071A1 (en) * | 2012-03-13 | 2013-09-19 | Panasonic Corporation | Endoscope camera |
US20140358089A1 (en) * | 2013-06-04 | 2014-12-04 | Boston Scientific Scimed, Inc. | Vacuum-assisted pancreaticobiliary cannulation |
US20150005763A1 (en) * | 2013-06-27 | 2015-01-01 | Olympus Winter & Ibe Gmbh | Guide catheter with an anchoring mechanism and method for introducing guide catheter |
US9808142B2 (en) | 2010-05-25 | 2017-11-07 | Arc Medical Design Limited | Covering for a medical scoping device |
US20180333042A1 (en) * | 2017-05-18 | 2018-11-22 | Loubert S. Suddaby | Self-anchoring endoscopy sheath |
US11172807B2 (en) | 2016-05-23 | 2021-11-16 | Olympus Corporation | Endoscope device and endoscope system with deforming insertion portion wire |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022034323A1 (en) * | 2020-08-12 | 2022-02-17 | Ttp Plc. | Endoscope |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972428A (en) * | 1932-12-06 | 1934-09-04 | John H W Richard | Syringe |
US3495586A (en) * | 1965-07-28 | 1970-02-17 | Eberhard Regenbogen | Rectoscope with spreading means |
US3568659A (en) * | 1968-09-24 | 1971-03-09 | James N Karnegis | Disposable percutaneous intracardiac pump and method of pumping blood |
US4608965A (en) * | 1985-03-27 | 1986-09-02 | Anspach Jr William E | Endoscope retainer and tissue retracting device |
US5279565A (en) * | 1993-02-03 | 1994-01-18 | Localmed, Inc. | Intravascular treatment apparatus and method |
US5730726A (en) * | 1996-03-04 | 1998-03-24 | Klingenstein; Ralph James | Apparatus and method for removing fecal impaction |
US5840067A (en) * | 1997-02-28 | 1998-11-24 | Berguer; Ramon | Centerflow catheter |
US5855563A (en) * | 1992-11-02 | 1999-01-05 | Localmed, Inc. | Method and apparatus for sequentially performing multiple intraluminal procedures |
US6203559B1 (en) * | 1998-10-05 | 2001-03-20 | Origin Medsystems | Method and apparatus for tissue dissection |
US6506178B1 (en) * | 2000-11-10 | 2003-01-14 | Vascular Architects, Inc. | Apparatus and method for crossing a position along a tubular body structure |
US6607476B1 (en) * | 1998-10-01 | 2003-08-19 | University Of Iowa Research Foundation | Brachytherapy positioning system |
US20040204709A1 (en) * | 1998-04-08 | 2004-10-14 | Senorx, Inc. | Tissue specimen isolating and damaging device and method |
US20060036218A1 (en) * | 2002-09-20 | 2006-02-16 | Flowmedica, Inc. | Method and apparatus for selective material delivery via an intra-renal catheter |
US20060100480A1 (en) * | 2002-12-24 | 2006-05-11 | Usgi Medical Inc. | Apparatus and methods for achieving endoluminal access |
US20060167437A1 (en) * | 2003-06-17 | 2006-07-27 | Flowmedica, Inc. | Method and apparatus for intra aortic substance delivery to a branch vessel |
US20060206148A1 (en) * | 1999-11-08 | 2006-09-14 | Khairkhahan Alexander K | Method of implanting an adjustable occlusion device |
US8152737B2 (en) * | 1998-03-03 | 2012-04-10 | Senorx, Inc. | Tissue specimen encapsulation device and method thereof |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4831554B1 (en) | 1968-12-24 | 1973-09-29 | ||
US4705041A (en) | 1984-07-06 | 1987-11-10 | Kim Il G | Dilator for Sphincter of Oddi |
US4699611A (en) | 1985-04-19 | 1987-10-13 | C. R. Bard, Inc. | Biliary stent introducer |
US4813930A (en) * | 1987-10-13 | 1989-03-21 | Dimed, Inc. | Angioplasty guiding catheters and methods for performing angioplasty |
US5071412A (en) | 1991-03-01 | 1991-12-10 | Laparomed Corporation | Device and method for performing cholangiography |
GR920100104A (en) * | 1992-03-13 | 1993-11-30 | Christodoulos I Stefanadis | Temporary luminal stent for the support of the vascular wall. |
US5354302A (en) | 1992-11-06 | 1994-10-11 | Ko Sung Tao | Medical device and method for facilitating intra-tissue visual observation and manipulation of distensible tissues |
DE4303274C2 (en) | 1993-02-05 | 1997-02-06 | Wolf Gmbh Richard | Endoscopic instrument |
US5547469A (en) | 1994-05-13 | 1996-08-20 | Boston Scientific Corporation | Apparatus for performing diagnostic and therapeutic modalities in the biliary tree |
EP1011460A4 (en) | 1996-12-02 | 2001-09-19 | Angiotrax Inc | Apparatus and methods for percutaneously performing surgery |
US5910150A (en) * | 1996-12-02 | 1999-06-08 | Angiotrax, Inc. | Apparatus for performing surgery |
WO1998032380A1 (en) | 1997-01-24 | 1998-07-30 | University Of Massachusetts | Auxiliary thoracic endoscope for minimally invasive surgery |
US6325798B1 (en) | 1998-02-19 | 2001-12-04 | Curon Medical, Inc. | Vacuum-assisted systems and methods for treating sphincters and adjoining tissue regions |
US5938585A (en) | 1998-03-20 | 1999-08-17 | Boston Scientific Corporation | Anchoring and positioning device and method for an endoscope |
US6728565B2 (en) | 2000-02-25 | 2004-04-27 | Scimed Life Systems, Inc. | Diagnostic catheter using a vacuum for tissue positioning |
US6645160B1 (en) * | 2000-03-17 | 2003-11-11 | Christian M. Heesch | Guide support catheter |
WO2001076675A2 (en) | 2000-04-11 | 2001-10-18 | Scimed Life Systems, Inc. | Reinforced retention structures |
US6535764B2 (en) | 2001-05-01 | 2003-03-18 | Intrapace, Inc. | Gastric treatment and diagnosis device and method |
US7083629B2 (en) | 2001-05-30 | 2006-08-01 | Satiety, Inc. | Overtube apparatus for insertion into a body |
WO2003090631A1 (en) | 2002-04-24 | 2003-11-06 | Surgical Connections, Inc. | Resection and anastomosis devices and methods |
US20040249367A1 (en) | 2003-01-15 | 2004-12-09 | Usgi Medical Corp. | Endoluminal tool deployment system |
US7257450B2 (en) | 2003-02-13 | 2007-08-14 | Coaptus Medical Corporation | Systems and methods for securing cardiovascular tissue |
EP1610719B1 (en) | 2003-03-28 | 2010-01-13 | GI Dynamics, Inc. | Sleeve for delayed introduction of enzymes into the intestine |
US7238182B2 (en) | 2003-04-25 | 2007-07-03 | Medtronic, Inc. | Device and method for transurethral prostate treatment |
JP4547184B2 (en) | 2003-07-29 | 2010-09-22 | オリンパス株式会社 | Endoscope adapter and endoscope |
US7438714B2 (en) | 2003-09-12 | 2008-10-21 | Boston Scientific Scimed, Inc. | Vacuum-based catheter stabilizer |
US7186214B2 (en) * | 2004-02-12 | 2007-03-06 | Medtronic, Inc. | Instruments and methods for accessing an anatomic space |
US20050245788A1 (en) * | 2004-04-28 | 2005-11-03 | Medtronic, Inc. | Esophageal delivery system and method with position indexing |
JP4000485B2 (en) * | 2005-02-28 | 2007-10-31 | フジノン株式会社 | Endoscope device |
US20070088203A1 (en) * | 2005-05-25 | 2007-04-19 | Liming Lau | Surgical assemblies and methods for visualizing and performing surgical procedures in reduced-access surgical sites |
US20090192505A1 (en) * | 2007-12-05 | 2009-07-30 | Reset Medical, Inc. | Method for cryospray ablation |
-
2009
- 2009-01-12 EP EP13005975.1A patent/EP2719346B1/en not_active Not-in-force
- 2009-01-12 EP EP09700252.1A patent/EP2244641B1/en not_active Not-in-force
- 2009-01-12 US US12/352,179 patent/US20090281374A1/en not_active Abandoned
- 2009-01-12 JP JP2010542405A patent/JP2011509714A/en not_active Withdrawn
- 2009-01-12 WO PCT/US2009/030745 patent/WO2009089530A2/en active Application Filing
-
2014
- 2014-12-16 US US14/571,582 patent/US9538903B2/en active Active
-
2016
- 2016-11-30 US US15/365,390 patent/US10433714B2/en not_active Expired - Fee Related
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1972428A (en) * | 1932-12-06 | 1934-09-04 | John H W Richard | Syringe |
US3495586A (en) * | 1965-07-28 | 1970-02-17 | Eberhard Regenbogen | Rectoscope with spreading means |
US3568659A (en) * | 1968-09-24 | 1971-03-09 | James N Karnegis | Disposable percutaneous intracardiac pump and method of pumping blood |
US4608965A (en) * | 1985-03-27 | 1986-09-02 | Anspach Jr William E | Endoscope retainer and tissue retracting device |
US5855563A (en) * | 1992-11-02 | 1999-01-05 | Localmed, Inc. | Method and apparatus for sequentially performing multiple intraluminal procedures |
US5279565A (en) * | 1993-02-03 | 1994-01-18 | Localmed, Inc. | Intravascular treatment apparatus and method |
US5730726A (en) * | 1996-03-04 | 1998-03-24 | Klingenstein; Ralph James | Apparatus and method for removing fecal impaction |
US5840067A (en) * | 1997-02-28 | 1998-11-24 | Berguer; Ramon | Centerflow catheter |
US8152737B2 (en) * | 1998-03-03 | 2012-04-10 | Senorx, Inc. | Tissue specimen encapsulation device and method thereof |
US7357801B2 (en) * | 1998-04-08 | 2008-04-15 | Senorx, Inc. | Tissue specimen isolating and damaging device and method |
US20040204709A1 (en) * | 1998-04-08 | 2004-10-14 | Senorx, Inc. | Tissue specimen isolating and damaging device and method |
US6607476B1 (en) * | 1998-10-01 | 2003-08-19 | University Of Iowa Research Foundation | Brachytherapy positioning system |
US6203559B1 (en) * | 1998-10-05 | 2001-03-20 | Origin Medsystems | Method and apparatus for tissue dissection |
US20060206148A1 (en) * | 1999-11-08 | 2006-09-14 | Khairkhahan Alexander K | Method of implanting an adjustable occlusion device |
US6506178B1 (en) * | 2000-11-10 | 2003-01-14 | Vascular Architects, Inc. | Apparatus and method for crossing a position along a tubular body structure |
US20060036218A1 (en) * | 2002-09-20 | 2006-02-16 | Flowmedica, Inc. | Method and apparatus for selective material delivery via an intra-renal catheter |
US20060100480A1 (en) * | 2002-12-24 | 2006-05-11 | Usgi Medical Inc. | Apparatus and methods for achieving endoluminal access |
US20060167437A1 (en) * | 2003-06-17 | 2006-07-27 | Flowmedica, Inc. | Method and apparatus for intra aortic substance delivery to a branch vessel |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120191181A1 (en) * | 2007-04-27 | 2012-07-26 | Kassab Ghassan S | Systems and methods for localization of a puncture site relative to a mammalian tissue of interest |
US9808142B2 (en) | 2010-05-25 | 2017-11-07 | Arc Medical Design Limited | Covering for a medical scoping device |
US10722103B2 (en) | 2010-05-25 | 2020-07-28 | Arc Medical Design Limited | Covering for a medical scoping device |
US11382494B2 (en) | 2010-05-25 | 2022-07-12 | Keymed (Medical & Industrial Equipment) Limited | Covering for a medical scoping device |
US20130242071A1 (en) * | 2012-03-13 | 2013-09-19 | Panasonic Corporation | Endoscope camera |
US9345393B2 (en) * | 2012-03-13 | 2016-05-24 | Panasonic Intellectual Property Management Co., Ltd. | Endoscope camera |
US20140358089A1 (en) * | 2013-06-04 | 2014-12-04 | Boston Scientific Scimed, Inc. | Vacuum-assisted pancreaticobiliary cannulation |
CN105283141A (en) * | 2013-06-04 | 2016-01-27 | 波士顿科学国际有限公司 | Vacuum-assisted pancreaticobiliary cannulation |
JP2016530904A (en) * | 2013-06-04 | 2016-10-06 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | Medical device for vacuum assisted pancreaticobiliary cannulation |
US20150005763A1 (en) * | 2013-06-27 | 2015-01-01 | Olympus Winter & Ibe Gmbh | Guide catheter with an anchoring mechanism and method for introducing guide catheter |
US11172807B2 (en) | 2016-05-23 | 2021-11-16 | Olympus Corporation | Endoscope device and endoscope system with deforming insertion portion wire |
US20180333042A1 (en) * | 2017-05-18 | 2018-11-22 | Loubert S. Suddaby | Self-anchoring endoscopy sheath |
Also Published As
Publication number | Publication date |
---|---|
EP2719346B1 (en) | 2017-08-16 |
JP2011509714A (en) | 2011-03-31 |
WO2009089530A2 (en) | 2009-07-16 |
EP2719346A1 (en) | 2014-04-16 |
US20150099931A1 (en) | 2015-04-09 |
EP2244641A2 (en) | 2010-11-03 |
US20170079511A1 (en) | 2017-03-23 |
WO2009089530A3 (en) | 2009-11-26 |
EP2244641B1 (en) | 2014-01-01 |
US9538903B2 (en) | 2017-01-10 |
US10433714B2 (en) | 2019-10-08 |
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