CN103142274A - Circular tube-type anastomat - Google Patents
Circular tube-type anastomat Download PDFInfo
- Publication number
- CN103142274A CN103142274A CN201210578108XA CN201210578108A CN103142274A CN 103142274 A CN103142274 A CN 103142274A CN 201210578108X A CN201210578108X A CN 201210578108XA CN 201210578108 A CN201210578108 A CN 201210578108A CN 103142274 A CN103142274 A CN 103142274A
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- Prior art keywords
- banking pin
- pin
- ejector pin
- circular
- operating handle
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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
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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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
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2946—Locking means
Abstract
The invention provides a circular tube-type anastomat, which comprises an anastomat body, an anvil assembly, an operating handle and a nail push rod, wherein the anvil assembly is matched with the anastomat body; the operating handle is pivotally connected with the anastomat body; the nail push rod is arranged in the anastomat body; the nail push rod is provided with an initial position and a percussion position; and the nail push rod can be driven by the operating handle to move to the percussion position of the nail push rod from the initial position of the nail push rod. The circular tube-type anastomat also comprises a retaining pin pivotally connected with the anastomat body; the retaining pin is provided with an initial position and a secondary percussion prevention position; when the retaining pin is located at the initial position of the retaining pin, a gap exists between the operating handle and the retaining pin; and when the retaining pin is located at the secondary percussion prevention position of the retaining pin, the operating handle is contacted with the retaining pin. According to the circular tube-type anastomat provided by the invention, secondary percussion can be effectively prevented, so that medical negligence is avoided occurring.
Description
Technical field
The present invention relates to a kind of circular-pipe anastomat, belong to technical field of medical instruments.
Background technology
Circular-pipe anastomat is a kind of medical apparatus and instruments that often uses when the physiological tissues such as digestive tract are carried out surgical operation.Bookbinding form in this class anastomat adopts axially mostly, organize containing for two sections when coincideing, form the circular anastomosis ring at organization internal, this apparatus can make that the body that produces in operation process is hemorrhage can be along with content be discharged together, and after operation, the collective organization ratio is easier to healing.
Existing ground, the circular-pipe anastomat that is used for the treatment of hemorrhoid comprises anastomat body, the operating handle that is flexibly connected described anastomat body and the anvil assembly that coordinates with described body.Described anastomat body comprises annular nail bin, the cutting knife of being located at far-end.Described anvil assembly comprises round table-like nail anvil, and be fixed on its top nail-anvil cap, be arranged on the cutter anvil of nail anvil inside, with the pin anvil shaft that removably is connected with the anastomat body.
usually, when carrying out hemorrhoid cutting anastomosis, first manually or use the assistive device such as anus dilator seat to expand anus, after pricking pocket for hemorrhoidal tissue, circular-pipe anastomat is inserted intestinal, then purse wire is pulled out apparatus and tightened up by the passage in the circular-pipe anastomat nail barrel, this moment, hemorrhoidal tissue was just tightened up in nail barrel and between nail anvil, the nail anvil of anvil assembly of furthering make nail anvil and and the nail bin of anastomat body clamp containing hemorrhoidal tissue, then, control nail bin and cutting knife is pulled the trigger by operating handle, so that hemorrhoidal tissue is coincide, cutting, at last, after the apparatus percussion is completed, with circular-pipe anastomat by extracting out in intestinal.Yet after apparatus was completed the shot action, the operator may unconsciously grip operating handle again, and this nail bin and cutting knife that operating handle is triggered pulled the trigger carries out the secondary percussion, causes malpractice.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of circular-pipe anastomat, this circular-pipe anastomat comprises that one can provide the banking pin of anti-secondary percussion function.
For achieving the above object, a kind of circular-pipe anastomat of the present invention comprises:
The anastomat body, the anvil assembly that coordinates described anastomat body, the operating handle of pivotally connected described anastomat body, and be arranged at the intrinsic ejector pin bar of described anastomat, described ejector pin bar has an initial position and a percussion position, and described operating handle can drive the firing position of ejector pin bar from the initial position of ejector pin bar to the ejector pin bar and move;
Described circular-pipe anastomat also comprises a banking pin that is connected with described anastomat body pivot, described banking pin has an initial position and anti-secondary firing position, when described banking pin is positioned at its initial position, has the gap between described operating handle and described banking pin; When described banking pin is positioned at its anti-secondary firing position, the described banking pin of described operating handle contact.
As a further improvement on the present invention, described banking pin is made by elastomeric material.
As a further improvement on the present invention, the near-end of described ejector pin bar is provided with an ejector pin bar projection, and when described banking pin was positioned at its initial position, described ejector pin bar projection was located between described operating handle and described banking pin; When described banking pin was positioned at its anti-secondary firing position, described banking pin was located between described ejector pin bar projection and described operating handle.
As a further improvement on the present invention, described anastomat body comprises a housing, described housing is provided with one second baffle, described ejector pin bar is provided with an ejector pin bar boss, described circular-pipe anastomat also comprises an ejector pin bar elastic component, described ejector pin bar elastic component is resisted against between described ejector pin bar boss and described the second baffle, and when described ejector pin bar was positioned at its firing position, described ejector pin bar elastic component replied the power of its initial position for described ejector pin bar one.
As a further improvement on the present invention, when described banking pin was positioned at its initial position, the contact surface of described ejector pin bar projection and described banking pin was a perpendicular or to the inclined-plane that extends away from the banking pin direction.
As a further improvement on the present invention, when described banking pin was positioned at its anti-secondary firing position, the contact surface of described ejector pin bar projection and described banking pin was one to the inclined-plane that extends away from the banking pin direction.
As a further improvement on the present invention, described anastomat body comprises a housing, described housing is provided with the banking pin track groove of an arc, described banking pin connects described banking pin track groove movably, and described banking pin track groove comprises one first extreme position and one second extreme position, when described banking pin was positioned at its initial position, described banking pin was near the first extreme position of described banking pin track groove; When described banking pin was positioned at its anti-secondary firing position, described banking pin was near the second extreme position of described banking pin track groove.
As a further improvement on the present invention, described the first extreme position is arranged at the far-end of described banking pin track groove with respect to described the second extreme position.
As a further improvement on the present invention, described operating handle comprises a resistance surface, when described resistance surface is positioned at its anti-secondary firing position at described banking pin, contacts described banking pin.
As a further improvement on the present invention, described resistance surface is L shaped, and its L shaped angle is the excessive acute angle of circular arc.
Compared with prior art, circular-pipe anastomat of the present invention can prevent the secondary percussion effectively, avoids body is caused extra injury, avoids occurring malpractice.
Description of drawings
Fig. 1 is the sectional view of circular-pipe anastomat in an embodiment of the present invention;
Fig. 2 is the explosive view of circular-pipe anastomat in an embodiment of the present invention;
Fig. 3 is the enlarged drawing of knob portion in Fig. 2;
Fig. 4 is the sectional view of knob main body in an embodiment of the present invention;
Fig. 5 is the sectional view of slow screw element in an embodiment of the present invention;
Fig. 6 is the enlarged drawing of left shell in Fig. 2;
Fig. 7 is the enlarged drawing of Fig. 2 pointer assembly;
Fig. 8 is the explosive view of another embodiment pointer assembly of the present invention;
Fig. 9 is the sectional view of another embodiment pointer assembly of the present invention;
Figure 10 is the enlarged drawing of banking pin in Fig. 2;
Figure 11 is the enlarged drawing of operating handle in Fig. 2;
Figure 12 is the side view of operating handle in another embodiment of the present invention;
Figure 13 is the enlarged drawing of ejector pin bar in Fig. 2;
Figure 14 is the sectional view of ejector pin bar in an embodiment of the present invention;
Figure 15 is that in an embodiment of the present invention, circular-pipe anastomat is in partially cut-away side view under can the percussion state;
Figure 16 is that in an embodiment of the present invention, circular-pipe anastomat is in the partially cut-away side view of preventing under secondary percussion state.
The specific embodiment
The present invention is described in detail below in conjunction with each embodiment shown in the drawings; but should be noted that; these embodiments are not limitation of the present invention; those of ordinary skills are according to these embodiments institutes work energy, method or structural equivalent transformation or substitute, within all belonging to protection scope of the present invention.
The word of described expression position and direction in the present invention, be all with the exercises on apparatus author as reference, close operator's a end is near-end, is far-end away from operator's a end.
As shown in Figure 1 and Figure 2, in an embodiment of the present invention, circular-pipe anastomat comprises anastomat body 10, the anvil assembly 20 that coordinates with described anastomat body 10, and the operating handle 30 of pivotally connected described body 10.
Described anastomat body 10 comprises the housing 101 of the hollow that is positioned at the circular-pipe anastomat near-end, and the nail barrel 103 that is positioned at the circular-pipe anastomat far-end, described nail barrel 103 connects described housing 101 by retainer ring 102, be provided with pushing slice of nail 105 and the annular nail bin 107 that is positioned at pushing slice of nail 105 far-ends in described nail barrel 103, also be provided with annular cutting knife 106 in this pushing slice of nail 105, described annular nail bin 107 is provided with some nail mouthes on its end face.
Described anvil assembly 20 comprises the annular nail anvil 201 that coordinates described annular nail bin 107, be fixed on this annular nail anvil 201 tops nail-anvil cap 203, be arranged on the endless knife anvil (not shown) of annular nail anvil 201 inside, and be used for connecting removably the pin anvil shaft 205 of anastomat body 10.Wherein, described endless knife anvil is arranged between described pin anvil shaft 205 and described annular nail anvil 201.
Described circular-pipe anastomat also is included in the knob 40 that near-end connects described housing 10.
Described knob 40 is flexibly connected a drive screw 109 of being located in described anastomat body 10, and can be reciprocating in the longitudinal axis (Z axis) direction of circular-pipe anastomat by slow screw thread and the fast described drive screw 109 of screw drive of these knob 40 interior settings.Screw thread ratio and the effect of described slow screw thread and fast screw thread, those of ordinary skills can skillfully grasp by common practise, do not repeat them here.
The far-end of described drive screw 109 connects described pin anvil shaft 205 removably, so, when described pin anvil shaft 205 connects described drive screw 109, can pass through rotary knob 40, drive described anvil assembly 20 near described anastomat body 10, make the annular nail anvil 201 of anvil assembly 20 and the annular nail bin 107 of anastomat body clamp the tissue that is tightened up by purse wire.
In conjunction with Fig. 3, Fig. 4, shown in Figure 5, in an embodiment of the present invention, described knob assembly 40 comprises knob main body 401, slow screw element 403, location-plate 405, and bonnet 407.
In an embodiment of the present invention, described knob main body 401 comprises knob 4011, and by the fast threaded portion 4013 of described knob 4011 to remote extension.
Be provided with fast screw thread in described fast threaded portion 4013.
Described slow screw element 403 also comprises a stopper slot 4032 that is connected with described fast threaded portion proximal end, and the relative position of fixing described slow screw element and described knob main body makes the relative knob main body of slow screw element not relatively rotate.
Be provided with a receiving space in described knob 4011, described receiving space inwall is provided with at least one knob projection 4015.
In an embodiment of the present invention, be provided with the slow screw thread of hollow in described slow screw element 403, described slow screw thread is communicated with described fast screw thread.Described slow screw element 403 can be contained in described receiving space, and between described fast screw thread and described knob projection 4015.The near-end of described slow screw element 403 also is provided with connecting portion 4031, and described connecting portion 4031 can be flexibly connected with described location-plate 405.
In an embodiment of the present invention, described location-plate 405 is provided with the location-plate projection 4051 that is complementary with described knob projection 4015 and the location-plate groove 4053 that is complementary with described knob projection 4015.And described location-plate also is provided with the hole 4055 of a hollow, and described hole 4055 can be sheathed on described connecting portion 4031 peripheries.
In an embodiment of the present invention, described bonnet 407 can be connected removably with described knob body 401, the far-end of described bonnet 407 is provided with the bonnet groove 4071 that is complementary with described operating portion projection 4015, reaches the bonnet projection 4073 that is complementary with described location-plate groove 4053.
When assembling, in the receiving space of the knob main body 401 of first slow screw element 403 being packed into, stopper slot 4032 on slow screw element 403 is connected with described fast threaded portion proximal end, and the relative position of fixing slow screw element and knob main body makes the relative knob main body of slow screw element not relatively rotate.the knob projection 4015 of again the location-plate groove 4053 on location-plate 405 being aimed at the receiving space inwall is mounted in this receiving space, be located between described slow screw element 403 and described knob projection 4015, then, this location-plate 405 is rotated to an angle, allow location-plate projection 4051 aim at described knob projection 4015, make the end face of the end face of described location-plate projection 4051 and described knob projection 4015 inconsistent, location-plate 405 is fixed in described receiving space, so, can coordinate with described knob main body 401 by location-plate 405, the relative position of fixing described slow screw element 403 and described knob main body 401.At last, bonnet groove 4071 and knob projection 4015, bonnet projection 4073 is corresponding with location-plate groove 4053 after, with bonnet 407 clampings to described receiving space.
Knob assembly of the present invention can form by assembling simply and easily, and having overcome existing knob assembly must be by the ultrasonic bonding molding, and processing is the defective of trouble comparatively.
As shown in Figure 1 and Figure 2, in an embodiment of the present invention, circular-pipe anastomat also comprises pointer member 111, the banking pin 113 that is arranged in described housing 101, and ejector pin bar 115.
But described pointer member 111 comprises firing position and safety position, but when described firing position, does not produce active force between described operating handle 30 and described pointer member, and namely described pointer member can not hinder the motion of described handle, and squeeze grip can be pulled the trigger apparatus; When described safety position, if press described handle, described pointer member can hinder the motion of described handle, and namely described operating handle applies a pressure to described pointer member, and can't pull the trigger this moment.But but whether these pointer member 111 prompting operation person's apparatuses arrive firing position.
Described banking pin 113 has an initial position and anti-secondary firing position, when described banking pin is positioned at its initial position, has certain interval between described operating handle 30 and described banking pin; When described banking pin is positioned at its anti-secondary firing position, the described banking pin of described operating handle contact.
Described ejector pin bar 115 has an initial position and a percussion position, and described operating handle can drive the firing position of ejector pin bar from the initial position of ejector pin bar to the ejector pin bar and move, and pulls the trigger to drive pushing slice of nail 105.The near-end of described ejector pin bar is provided with an ejector pin bar projection 1153, and when the initial position of banking pin, described ejector pin bar projection is located between described operating handle and described banking pin; When the anti-secondary firing position of banking pin, described banking pin is located between described ejector pin bar projection and described operating handle.
Described housing 101 comprise left shell 101a and with the symmetrically arranged right shell body 101b of described left shell 101a.Below only highlight left shell 101a.
In conjunction with shown in Figure 6, described left shell 101a comprises a grip part, and described left shell 101a is provided with the first baffle 1011a, the form installing hole, pointer bearing pin track groove 1015a, operating handle bearing pin installing hole 1017a, banking pin fixed axis 1019a, banking pin track groove 1021a, and the second baffle 1023a.
Described the first baffle 1011a is near the near-end setting of described left shell 101a, and described the second baffle 1023a is near the far-end setting of described left shell 101a.
Described form installing hole, pointer bearing pin track groove 1015a, operating handle bearing pin installing hole 1017a, banking pin fixed axis 1019a, banking pin track groove 1021a are arranged between described the first baffle 1011a and described the second baffle 1023a.
The far-end of described left shell 101a also is provided with a housing connecting portion 1025a, so that described housing 101 can be connected with described nail barrel 103 by retainer ring 102.
Wherein, described form installing hole is arranged on grip part between described the first baffle and pointer bearing pin track groove 1015a.Described pointer bearing pin track groove 1015a is arranged between described form installing hole and described operating handle bearing pin installing hole 1017a.
The operating handle pin 117 of can pegging graft on described operating handle axle installing hole 1017a, described operating handle pin 117 passes pin-and-hole 3031 and the described operating handle axle installing hole 1017a on operating handle 30, and described operating handle 30 pivotally is connected with described housing 101.
The structure of described operating handle 30, with and will be specifically introduced in conjunction with Figure 11, Figure 12, Figure 15, Figure 16 following with the matching relationship of pointer member 111, banking pin 113, ejector pin bar 115.
Described pointer bearing pin track groove 1015a is a track groove that extends along the y direction of circular-pipe anastomat, and its pointer bearing pin 1115 that can hold pointer member 111 slides within it.
Described pointer bearing pin track groove 1015a is parallel to the longitudinal axis of described circular-pipe anastomat.
Described pointer bearing pin track groove 1015a has near-end end points and a far-end end points one by one.When the described pointer bearing pin 1115 described near-end end points of contact, do not produce active force between described operating handle 30 and described pointer bearing pin, namely described pointer member can not hinder the motion of described handle, at this moment, can squeeze grip pull the trigger; When described pointer bearing pin 1115 leaves the near-end end points or is positioned at described far-end end points, if press described handle, described pointer member can hinder the motion of described handle, be but that apparatus is not when arriving firing position, press described operating handle 30, described operating handle 30 applies a pressure to described pointer bearing pin.
Being provided with the pointer elastic component between described the first baffle 1011a and described pointer member 111 is pointer spring 119, and described pointer spring 119 is in compressive state against described the first baffle 1011a and described pointer member 111.
The structure of described pointer member 111, with and will be specifically introduced in conjunction with Fig. 7, Fig. 8, Fig. 9, Figure 15, Figure 16 following with the matching relationship of operating handle 30, banking pin 113.
Described banking pin track groove 1021a is an arcuate groove, and its braking pin shaft 1135 that can hold banking pin 113 moves within it.
This braking pin shaft track groove 1021a has one first extreme position and one second extreme position, and described the first extreme position is arranged at the far-end of described banking pin track groove/apparatus with respect to described the second extreme position.
When the first extreme position of described banking pin 113 close described banking pin track groove 1021a, has certain interval between described operating handle and described banking pin; When the second extreme position of the close described banking pin track groove of described banking pin, the described banking pin of described operating handle contact.
Banking pin fixed axis 1019a can coordinate with connecting hole 1133 pivots of described banking pin 113, makes described banking pin 113 take described banking pin fixed axis 1019a as axis swing, drives described braking pin shaft 1135 and moves in described banking pin track groove 1021a.
The structure of described banking pin 113, with and will be specifically introduced in conjunction with Figure 10, Figure 15, Figure 16 following with the matching relationship of operating handle 30, pointer member 111 and ejector pin bar 115.
Described the second baffle 1023a coordinates with the ejector pin bar boss 1151 that described ejector pin bar 115 is provided with, and lays ejector pin bar elastic component, preferred ejector pin bar spring 121.Described the second baffle 1023a of described ejector pin bar spring 121 1 end in contact and the described ejector pin bar boss 1151 of its other end contact.
Described ejector pin bar 115 has an initial position and and pulls the trigger the position, and when described ejector pin bar was positioned at its firing position, described ejector pin bar elastic component was that ejector pin bar spring 121 is replied the power of initial position to described ejector pin bar one.
The structure of described ejector pin bar 115, with and will be specifically introduced in conjunction with Figure 13, Figure 14, Figure 15, Figure 16 following with the matching relationship of operating handle 30 and banking pin 113.
In conjunction with Fig. 1, shown in Figure 7, in an embodiment of the present invention, described pointer member 111 is arranged in housing 101.It comprises the pointer main body 1111 of a hollow, and described pointer main body 1111 is sheathed on described drive screw 109.
The end face of the near-end of this pointer main body 1111 is provided with and holds or the boss 1112 of sheathed pointer spring 119, to guarantee that the pointer main body coordinates better with the pointer spring, flange 1091 butts on the far-end of this pointer main body 1111 and described drive screw 109 make described pointer spring 119 can drive described pointer main body 1111 along with the far-end of described drive screw 109 to described circular-pipe anastomat moves.
Also be provided with indicatrix 1113 on described pointer main body 1111.Described indicatrix is a ring-type, and protrudes from the sidewall setting of described pointer main body 1111, and certainly, the position of described indicatrix arranges and can differently according to the position of form installing hole change, and described indicatrix also can be arranged on the adjutage of pointer.
The end of described upper adjutage 1114 is provided with the pointer bearing pin 1115 that can coordinate with the pointer bearing pin track groove of left and right housing 101a, 101b.Described pointer bearing pin 1115 is arranged in the pointer bearing pin track groove of left and right housing 101a, 101b movably, and can be driven by described knob assembly 40, reach the far-end end points from the near-end endpoint location of described pointer bearing pin track groove, also can arrive the near-end end points from the far-end end points of described pointer bearing pin track groove.
When the described pointer bearing pin 1115 described near-end end points of contact, described operating handle can swing by relatively described housing, acts on the firing position of described ejector pin bar from the initial position of ejector pin bar to the ejector pin bar and moves; When described pointer bearing pin 1115 leaves the near-end end points or is positioned at described far-end end points, if press described handle, described pointer member can hinder the motion of described handle, be but that apparatus is not when arriving firing position, press described operating handle 30,, described operating handle relatively described housing all the time keeps static, avoids the generation of mistakenly hit hair device tool situation.
Described knob assembly 40 also can act on described drive screw 109 and drive described pointer main bodys 1111 and move to the near-end of described circular-pipe anastomat.
The end of described downward semi-girder 1116 is provided with pointer extension 1117.
The distal face of described pointer extension 1117 has an inclined-plane at least, moves in the banking pin track groove of left and right housing 101a, 101b so that it promotes described banking pin 113.Particularly, the contact surface of described pointer extension and described banking pin is one to the inclined-plane that extends away from the banking pin direction.
Described pointer extension 1117 can promote described banking pin 113 and be moved to its initial position by its anti-secondary firing position.
Preferably, also comprise form 1119, described form 1119 can be installed in the form installing hole of housing, and the operator can see through this form 1119 and check the position of described indicatrix 1113.But described pointer member 111 comprises a firing position and a safety position, views described indicatrix 1113 and is in can pull the trigger the zone time when seeing through this form 1119, and the expression apparatus arrives can pull the trigger state; Can not view described indicatrix 1113 or described indicatrix 1113 and do not arrive not pull the trigger the zone time when seeing through this form 1119, represent that this pointer member is in safety position, can not pull the trigger.
As Fig. 8, shown in Figure 9, in another embodiment of the present invention, described pointer member 111 is arranged in housing 101.It comprises the pointer main body 1111 of a hollow, and described pointer main body 1111 can be sheathed on described drive screw 109.
The end face of the near-end of this pointer main body 1111 is provided with and holds or the boss 1112 of sheathed pointer spring 119, to guarantee that the pointer main body coordinates better with the pointer spring, flange 1091 butts on the far-end of this pointer main body 1111 and described drive screw 109 make described pointer spring 119 can drive described pointer main body along with the far-end of described drive screw 109 to described circular-pipe anastomat moves.
Also be provided with the guide pad 1123 of main body latch hook 1121 and hollow on described pointer main body 1111.
Described guide pad 1123 can coordinate housing 101 to keep this pointer member 111 to move stably in described housing 101.
Described pointer member 111 also comprises an extension spring 1125 and a lock dog 1127.
Described lock dog 1127 is provided with pointer bearing pin 1115.In the pointer bearing pin track groove that is arranged at described left and right housing 101a, 101b of these pointer bearing pin 1115 activities, and can be driven by described knob assembly 40, reach the far-end end points from the near-end endpoint location of described pointer bearing pin track groove, also can arrive the near-end end points from the far-end end points of described pointer bearing pin track groove.
When the described pointer bearing pin 1115 described near-end end points of contact, described operating handle can swing by relatively described housing, acts on the firing position of described ejector pin bar from the initial position of ejector pin bar to the ejector pin bar and moves; When described pointer bearing pin 1115 leaves the near-end end points or is positioned at described far-end end points, if press described handle, described pointer member can hinder the motion of described handle, be but that apparatus is not when arriving firing position, press described operating handle 30,, described operating handle relatively described housing all the time keeps static, avoids the generation of mistakenly hit hair device tool situation.
Described lock dog 1127 passes described guide pad 1123, and is connected with described main body latch hook 1121 by extension spring 1125.Preferably, described lock dog 1127 is provided with a lock dog latch hook 1129, and these extension spring 1,125 one ends connect described main body latch hook 1121, and the other end connects this lock dog latch hook 1129.
But described lock dog 1127 comprises firing position and safety position, but when described firing position, does not produce active force between described operating handle and described lock dog, and namely described lock dog can not hinder the motion of described operating handle, and squeeze grip can be pulled the trigger apparatus; When described safety position, if press described handle, described pointer member can hinder the motion of described handle, and namely described operating handle applies a pressure to described lock dog, can't pull the trigger the generation of avoiding mistakenly hit to send out.
At the downward semi-girder 1116 of the remote extension of described pointer main body 1111, described downward semi-girder is provided with indicatrix 1113, certainly, the position of described indicatrix arranges and can differently according to the position of form installing hole change, and described indicatrix also can be arranged on described pointer main body 1111.
The end of described downward semi-girder 1116 also is provided with pointer extension 1117.
The distal face of described pointer extension 1117 has an inclined-plane at least, moves in the banking pin track groove of left and right housing 101a, 101b so that it promotes described banking pin 113.Particularly, the contact surface of described pointer extension and described banking pin is one to the inclined-plane that extends away from the banking pin direction.
Described pointer extension 1117 can promote described banking pin 113 and be moved to its initial position by its anti-secondary firing position.
Preferably, described pointer member 111 also comprises form 1119, and described form 1119 can be installed in the form installing hole of housing, and the operator can see through this form 1119 and check the position of described indicatrix 1113.View described indicatrix 1113 and be positioned to pull the trigger the zone time when seeing through this form 1119, representing that this apparatus arrives can pull the trigger state, can not view described indicatrix 1113 or described indicatrix 1113 and do not arrive not pull the trigger the zone time when seeing through this form 1119, represent that this apparatus is in safety position, can not pull the trigger.
So, by latch hook, extension spring, lock dog are set, even if make the operator in the situation that unconsciously holding operating handle 30, but pointer body 1111 still can move to firing position along with the flange 1091 on drive screw 109, and the pointer bearing pin 1115 on lock dog 1127 still can prop up operating handle 30.Until operator's unclamp operation handle 30, lock dog 1127 resilience under the effect of extension spring 1125, but after making described lock dog also arrive firing position, just can press operating handle and complete percussion.Overcome in prior art, when the operator is unconsciously holding operating handle 30 rotary knob assemblies 40, but and pointer body 1111 when having arrived firing position, unconscious percussion apparatus and the generation of the malpractice that causes; Can avoid also that in prior art, the operator is unconsciously holding operating handle 30, rotary knob assembly 40, pointer is operated handle and props up and can't move, but the operator thinks when arriving firing position, continuation firmly pressing operation handle is pulled the trigger, may cause insuring damaged, thereby cause apparatus can not normally use or pull the trigger not exclusively.
As Fig. 1, shown in Figure 10, in an embodiment of the present invention, described banking pin 113 comprises a movable part 1131, and the two ends of described movable part 1131 are provided with connecting hole 1133, and described movable part 1131 adopts elastomeric material to make.
Wherein, at described movable part 1131 wherein in a connecting hole, be inserted with braking pin shaft 1135, described braking pin shaft 1135 can coordinate with the banking pin track groove 1021a on left and right housing 101a, 101b, and this banking pin 113 can be moved in described banking pin track groove.
When the first extreme position of described banking pin 113 close described banking pin track grooves, described ejector pin bar projection 1153 is located between described operating handle and described banking pin; When the second extreme position of the close described banking pin track groove of described banking pin, described banking pin is located between described ejector pin bar projection and described operating handle.
Banking pin fixed axis 1019a on described another connecting hole 1133 rotor ground connection left shell 101a.
When described banking pin 113 was positioned at the initial position of banking pin, described banking pin was near the first extreme position of described banking pin track groove.
When described banking pin 113 was positioned at the anti-secondary firing position of banking pin, described banking pin was near the second extreme position of described banking pin track groove.
As shown in figure 11, in an embodiment of the present invention, described operating handle 30 comprises handle portion 301, connecting portion 303.Described connecting portion 303 is provided with pin-and-hole 3031, the first resistance surface 3033, the second resistance surface 3035, and described handle portion 301 can be used for the operator and grips and press described handle portion 301 to described housing 101 direction motions.
Described bearing pin 3031 is used for coordinating handle bearing pin installing hole on left and right housing 101a, 101b and the operating handle pin 117 movable described operating handle 30 of installation on described housing 101.
Described the first resistance surface 3033 can play insurance function against the pointer bearing pin 1115 of described pointer member 111, and described the first resistance surface is parallel with the longitudinal axis of described circular-pipe anastomat.
When described pointer member 111 contacts the near-end end points of described pointer bearing pin track grooves, do not produce active force between described the first resistance surface 3033 and described pointer bearing pin 1115, be that described pointer bearing pin can not hinder the motion of described operating handle, squeeze grip can be pulled the trigger apparatus; When described pointer member 111 is left the near-end end points of described pointer bearing pin track groove or is positioned at the far-end end points of described pointer bearing pin track groove, if press described handle, described pointer bearing pin 1115 can hinder the motion of described handle, be that described the first resistance surface applies a pressure to described pointer bearing pin, can't pull the trigger.
When but described pointer member 111 is positioned at described firing position, do not produce active force between described the first resistance surface and described pointer bearing pin; When described pointer member was positioned at safety position, described the first resistance surface applied a pressure to described pointer bearing pin.
Described the second resistance surface 3035 can play against the movable part 1131 of described banking pin 113 anti-secondary percussion function.Described the second resistance surface is L shaped, and its L shaped angle is right angle or acute angle.Preferably, as shown in figure 12, described L shaped angle is the excessive acute angle of circular arc.
Described the first resistance surface 3033 and the second resistance surface 3035 are not coplanar.
Wherein, described the second resistance surface 3035 is located at described the first resistance surface 3033 belows, the i.e. longitudinal axis setting of more close described circular-pipe anastomat.The far-end of relatively described the first more close described circular-pipe anastomat of resistance surface 3033 of described the second resistance surface 3035.
Preferably, connecting portion 303 is made as left-right symmetric and tool two parts at regular intervals, on every part, all is provided with accordingly pin-and-hole 3031, the first resistance surface 3033 and the second resistance surface 3035.With the operating handle pin 117 of pegging graft respectively, on the pointer member 111 pointer bearing pin 1115 and banking pin 113 movable parts 1131 at adjutage 1114 two ends, and can avoid and described drive screw 109 and ejector pin bar 115 form and interfere.
As Figure 13, shown in Figure 14, in an embodiment of the present invention, described ejector pin bar 115 is hollow structure, and it is sheathed on described drive screw 109.Described ejector pin bar 115 comprises ejector pin bar projection 1153, ejector pin bar boss 1151, the ejector pin bar buckle 1155 that is set gradually to ejector pin bar far-end by ejector pin bar near-end.
Described ejector pin bar boss 1151 can coordinate the second baffle compression ejector pin bar spring 121 on described left and right housing 101a, 101b.Described ejector pin bar spring 121 is against described ejector pin bar boss and described the second baffle setting, and when described ejector pin bar 115 was positioned at its firing position, described ejector pin bar spring 121 replied the power of its initial position for described ejector pin bar one.
Described ejector pin bar projection 1153 can coordinate the movable part 1131 of banking pin 113 to play anti-secondary percussion function.When the initial position of described banking pin 113, the contact surface of described ejector pin bar projection and described banking pin is an arcwall face or to the inclined-plane that extends away from the banking pin direction.When the anti-secondary firing position of described banking pin, the contact surface of described ejector pin bar projection and described banking pin is one to the inclined-plane that extends away from the banking pin direction.
When the initial position of banking pin 113, described ejector pin bar projection 1153 is near the described banking pin of one side contact of described circular-pipe anastomat far-end, and described ejector pin bar projection 1153 is located between described operating handle 30 and described banking pin 113; When the anti-secondary firing position of banking pin, described ejector pin bar projection is near the described banking pin of one side contact of described circular-pipe anastomat near-end, and described banking pin is located between described ejector pin bar projection and described operating handle.
This ejector pin bar buckle 1155 can connect described pushing slice of nail 105.
Between described ejector pin bar projection 1153 and described ejector pin bar boss 1151, also be provided with for the mating surface 1157 against described operating handle 30, so that described operating handle 30 can be when pressing, driving described ejector pin bar 115 moves to the far-end of described circular-pipe anastomat, compress described ejector pin bar spring 121, act on simultaneously pushing slice of nail 105 and pull the trigger.
The operation principle of circular-pipe anastomat of the present invention is:
As shown in figure 15, when described circular-pipe anastomat is positioned at original state, the pointer bearing pin 1115 of described pointer member 111 is arranged in the pointer bearing pin track groove of described left and right housing 101a, 101b, and be in the position of the near-end end points that leaves pointer bearing pin track groove, and coordinate with the first baffle of described housing, compress described pointer spring 119.
Described banking pin 113 is installed in described housing, and its braking pin shaft 1135 is positioned at the banking pin track groove of described housing 101, and described banking pin 113 is near the first extreme position of described banking pin track groove.At this moment, described banking pin is positioned at initial position.
The ejector pin bar projection 1153 of described ejector pin bar 115 is located between described banking pin 113 movable parts 1131 and described operating handle the second resistance surface 3035.
Turning knob assembly 40, slow screw thread and fast screw thread drive drive screw 109 move ahead to the far-end of described circular-pipe anastomat.
Simultaneously, pointer spring 119 push pointer main bodys 1111 move ahead to the far-end of described circular-pipe anastomat, and described pointer bearing pin 1115 makes operating handle 30 to press down against the first resistance surface 3033 of described operating handle, plays safety effect.
Pressing operating handle 30 pulls the trigger, after operating handle 30 drives ejector pin bars 115 and moves and tissue is coincide, cuts to the apparatus far-end, unclamp operation handle 30, described ejector pin bar spring 121 drives described ejector pin bar boss 1151 ejector pin bar 115 is automatically reset.Simultaneously, described ejector pin bar projection 1153 pushes back the movable part 1131 of described banking pin 113, to " anti-secondary firing position ", as shown in figure 16, described banking pin 113 is near the second extreme position of described banking pin track groove, be the movable part 1131 of described banking pin 113 between the second resistance surface 3035 of described ejector pin bar projection 1153 and described operating handle 30, described banking pin is positioned at its anti-secondary firing position, prevents from again pressing operating handle secondary percussion apparatus.
If pull the trigger next time, can pass through turning knob assembly 40, slow screw thread and fast screw thread drive drive screw 109 move ahead to the far-end of described circular-pipe anastomat.Simultaneously, pointer spring 119 push pointer main bodys 1111 move ahead to the far-end of described circular-pipe anastomat, the movable part 1131 that the pointer extension 1117 of pointer member promotes described banking pins 113 moves in described banking pin track groove, by its anti-secondary firing position to its initial position.And the repetition above-mentioned steps, can complete percussion next time.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that do not deviate from spirit of the present invention or basic feature, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore is intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limit related claim.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (10)
1. circular-pipe anastomat comprises:
The anastomat body, the anvil assembly that coordinates described anastomat body, the operating handle of pivotally connected described anastomat body, and be arranged at the intrinsic ejector pin bar of described anastomat, described ejector pin bar has an initial position and a percussion position, and described operating handle can drive the firing position of ejector pin bar from the initial position of ejector pin bar to the ejector pin bar and move;
It is characterized in that, described circular-pipe anastomat also comprises a banking pin that is connected with described anastomat body pivot, described banking pin has an initial position and anti-secondary firing position, when described banking pin is positioned at its initial position, is provided with the gap between described operating handle and described banking pin; When described banking pin is positioned at its anti-secondary firing position, the described banking pin of described operating handle contact.
2. circular-pipe anastomat according to claim 1, is characterized in that, described banking pin is made by elastomeric material.
3. circular-pipe anastomat according to claim 1 and 2, is characterized in that, the near-end of described ejector pin bar is provided with an ejector pin bar projection, and when described banking pin was positioned at its initial position, described ejector pin bar projection was located between described operating handle and described banking pin; When described banking pin was positioned at its anti-secondary firing position, described banking pin was located between described ejector pin bar projection and described operating handle.
4. circular-pipe anastomat according to claim 3, it is characterized in that, described anastomat body comprises a housing, described housing is provided with one second baffle, described ejector pin bar is provided with an ejector pin bar boss, described circular-pipe anastomat also comprises an ejector pin bar elastic component, described ejector pin bar elastic component is against described ejector pin bar boss and described the second baffle setting, when described ejector pin bar was positioned at its firing position, described ejector pin bar elastic component replied the power of its initial position for described ejector pin bar one.
5. circular-pipe anastomat according to claim 3, is characterized in that, when described banking pin was positioned at its initial position, the contact surface of described ejector pin bar projection and described banking pin was a perpendicular or to the inclined-plane that extends away from the banking pin direction.
6. circular-pipe anastomat according to claim 3, is characterized in that, when described banking pin was positioned at its anti-secondary firing position, the contact surface of described ejector pin bar projection and described banking pin was one to the inclined-plane that extends away from the banking pin direction.
7. circular-pipe anastomat according to claim 1, it is characterized in that, described anastomat body comprises a housing, described housing is provided with the banking pin track groove of an arc, described banking pin connects described banking pin track groove movably, and described banking pin track groove comprises one first extreme position and one second extreme position, and when described banking pin was positioned at its initial position, described banking pin was near the first extreme position of described banking pin track groove; When described banking pin was positioned at its anti-secondary firing position, described banking pin was near the second extreme position of described banking pin track groove.
8. circular-pipe anastomat according to claim 7, is characterized in that, described the first extreme position is located at the top of described the second extreme position.
9. circular-pipe anastomat according to claim 1, is characterized in that, described operating handle comprises a resistance surface, when described resistance surface is positioned at its anti-secondary firing position at described banking pin, contacts described banking pin.
10. circular-pipe anastomat according to claim 9, is characterized in that, described resistance surface is L shaped, and its L shaped angle is the excessive acute angle of circular arc.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578108.XA CN103142274B (en) | 2012-12-27 | 2012-12-27 | Circular-pipe anastomat |
| PCT/CN2013/090455 WO2014101775A1 (en) | 2012-12-27 | 2013-12-25 | Circular stapler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578108.XA CN103142274B (en) | 2012-12-27 | 2012-12-27 | Circular-pipe anastomat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103142274A true CN103142274A (en) | 2013-06-12 |
| CN103142274B CN103142274B (en) | 2016-09-14 |
Family
ID=48540817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210578108.XA Active CN103142274B (en) | 2012-12-27 | 2012-12-27 | Circular-pipe anastomat |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103142274B (en) |
| WO (1) | WO2014101775A1 (en) |
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| WO2014101775A1 (en) * | 2012-12-27 | 2014-07-03 | 苏州天臣国际医疗科技有限公司 | Circular stapler |
| CN109953795A (en) * | 2017-12-26 | 2019-07-02 | 苏州天臣国际医疗科技有限公司 | Circular-pipe anastomat |
| CN109953791A (en) * | 2017-12-26 | 2019-07-02 | 苏州天臣国际医疗科技有限公司 | Handle assembly and stapler including it |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2014101775A1 (en) | 2014-07-03 |
| CN103142274B (en) | 2016-09-14 |
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Address after: 215021 No. 278 Dongping Street, Suzhou Industrial Park, Jiangsu Province Patentee after: Tianchen International Medical Technology Co., Ltd Address before: 215021 science and Technology Plaza, Jinji Lake Road International Science Park, Suzhou Industrial Park, Suzhou, Jiangsu, 21A Patentee before: TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE Co.,Ltd. |
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