WO2022156024A1 - Agrafeuse endoscopique - Google Patents

Agrafeuse endoscopique Download PDF

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Publication number
WO2022156024A1
WO2022156024A1 PCT/CN2021/076911 CN2021076911W WO2022156024A1 WO 2022156024 A1 WO2022156024 A1 WO 2022156024A1 CN 2021076911 W CN2021076911 W CN 2021076911W WO 2022156024 A1 WO2022156024 A1 WO 2022156024A1
Authority
WO
WIPO (PCT)
Prior art keywords
staple cartridge
assembly
tab
cutting knife
push
Prior art date
Application number
PCT/CN2021/076911
Other languages
English (en)
Chinese (zh)
Inventor
易祥玖
陈强
唐小娟
Original Assignee
重庆迈科唯医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 重庆迈科唯医疗科技有限公司 filed Critical 重庆迈科唯医疗科技有限公司
Publication of WO2022156024A1 publication Critical patent/WO2022156024A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214—Stapler heads
    • A61B2017/07271—Stapler heads characterised by its cartridge
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214—Stapler heads
    • A61B2017/07285—Stapler heads characterised by its cutter

Definitions

  • the invention relates to the field of medical equipment, in particular to an endoscopic stapler.
  • the Kehui version of the endoscopic stapler consists of a body and a staple cartridge.
  • a gun body will fire multiple staple cartridges, and the cost of each staple cartridge is relatively high. heavy medical burden.
  • the shrapnel of the wedge-shaped protrusions is paired with the nail pusher slider, which can automatically identify the empty nail cartridge and realize the safety function of the cutting knife.
  • the cutting edge will leak from the knife groove of the staple cartridge and damage the structural strength of the staple cartridge base, affecting the ability of the staple cartridge to cut and suture thick tissues, and there is a potential safety hazard.
  • the purpose of the present invention is to provide a laparoscopic stapler, which is used to solve the problem of safety hazards in the prior art that the cutting knife is not reset after being pushed out, and the safety structure of the cutting knife affects the nail magazine.
  • an endoscopic stapler comprising:
  • the cutter mechanism includes:
  • the guide groove includes a high-position groove, a transition groove and a low-position groove, and the transition groove is used to connect the high-position groove and the low-position groove;
  • a cutting knife a support member is fixed on the handle of the cutting knife, the support member is placed in the guide groove, and the support member can move back and forth in the high-position groove, the transition groove and the low-position groove, so The cutting knife is hung on the guide groove through the support;
  • the cutting knife is also provided with a first hook
  • a push-pull piece the output end of the push-pull piece is used for pushing and pulling the cutting knife, and a second hook is fixed at the output end of the push-pull piece;
  • the first hook approaches the second hook, and when the support member reaches the low slot, the The first hook and the second hook are fastened together; when the push-pull member pulls the cutting knife from the low slot to the high slot, the first hook gradually moves away from the second hook, and when When the support member reaches the high-level groove, the first hook and the second hook are disengaged;
  • the staple cartridge assembly is detachably installed on the staple cartridge base; when the staple cartridge assembly is taken out from the staple cartridge base, the safety component will hinder the forward movement of the push-pull member, and the staple cartridge assembly is installed on the staple cartridge base.
  • the magazine base When the magazine base is installed, the magazine assembly overcomes the resistance of the safety assembly and releases the restriction on the forward and backward displacement of the push-pull member.
  • the left and right sides of the cutting blade in the advancing direction are respectively provided with the support pieces, and the support pieces are respectively provided with the guide grooves.
  • the staple cartridge assembly includes a staple cartridge, a staple cartridge cover and a staple pushing slider;
  • the staple cartridge is used for accommodating staples, the staple cartridge is longitudinally provided with a through slot, the cutting knife passes through the through slot, the staple cartridge is fixed with a first rib, and the staple cartridge cover A second rib is fixed thereon or an inner wall structure matched with the first rib is provided, and the guide groove is formed between the first rib or the inner wall structure and the second rib.
  • the staple cartridge pushes the staple pushing slider and the cutting knife into the high-level groove.
  • the magazine base is provided with a safety through hole
  • the safety assembly includes a tab and an elastic member, the tab is rotatably installed through a pin shaft, the elastic member is fixed on the anvil seat assembly, and the elastic member is also fixed on the tab, the The elastic member has an elastic tendency to allow the latching portion of the tab to pass through the safety through hole.
  • the anvil base assembly includes an anvil base body and an anvil base plate, the nail anvil base plate is fixed on the side wall of the nail anvil base body, the anvil base plate and the nail anvil base body
  • the bottom walls of the clasps are spaced to form a accommodating space, and a safety through hole is provided on the anvil plate;
  • the safety assembly includes a tab and an elastic member, the tab is rotatably installed through a pin, the elastic member is fixed on the base of the magazine, and the elastic member is also fixed on the tab, the elastic member is
  • the fitting has an elastic tendency to allow the latching portion of the tab to pass through the safety through hole and enter the accommodating space;
  • the staple cartridge assembly and the tabs cooperate to overcome the elastic force of the elastic member, and the tabs are rotated so that the latching portion exits the accommodating space Inside.
  • the tab includes a tab body and a connecting portion, the connecting portion is rotatably installed through the pin, the connecting portion is fixed on one end of the tab body, and the latching portion is fixed on the the other end of the tongue body.
  • both the connecting portion and the locking portion are arranged at an angle relative to the tab body, the connecting portion and the locking portion are located on one side of the tab body, and the elastic is located on the other side of the body of the tab.
  • a side of the locking portion close to the staple cartridge assembly is provided with an inclined surface structure, and the inclined surface structure is used to cooperate with the staple cartridge assembly.
  • the staple cartridge assembly is installed, the staple cartridge is installed. The assembly applies pressure to the ramp structure and causes the tabs to flip.
  • the safety components are arranged in pairs in the left and right directions.
  • the endoscopic stapler of the present invention has at least the following beneficial effects:
  • the safety through hole is opened on the nail plate at the same time, so that in the case of no interference from the cartridge assembly, that is, in the case of an empty cartridge, the elastic member can allow the latching portion of the tab to pass through.
  • the push block Entering into the accommodating space through the safety through hole, since the push block is partially placed in the accommodating space, when the push block moves forward in the accommodating space, since the latching part is also in the accommodating space, the push block is blocked, making the push block unable to Push the cutting knife assembly forward, when the staple cartridge assembly is installed on the staple cartridge base, the staple cartridge assembly overcomes the elastic force of the elastic piece, so that the tab is withdrawn from the accommodating space, so as to achieve a space, when the push block is pushed forward , the push block can be unrestricted in the accommodating space, so as to realize the driving of the cutting knife assembly and the push nail slider. It has the characteristics of simple structure and convenient manufacture.
  • the first hook and the second hook can be in a buckled state, and they can move synchronously with the push-pull action of the push-pull member.
  • the cutting knife when the cutting knife is in a low position, its blade can be exposed in the cutting state.
  • the push-pull member pulls the cutting knife back to a high position , the cutting knife is retracted and hidden, and the first hook and the second hook can be disengaged again, and the cutting knife can be replaced at the same time.
  • FIG. 1 is a schematic perspective view of the stapler of the present invention.
  • FIG. 2 is an exploded schematic view of the staple cartridge assembly of the present invention.
  • FIG. 3 shows a schematic diagram of the staple cartridge of the present invention.
  • FIG. 4 shows a schematic view of the cutting knife of the present invention.
  • FIG. 5 is a schematic diagram of the nail pushing slider of the present invention.
  • FIG. 6 is a schematic view of the staple cartridge cover of the present invention.
  • FIG. 7 shows a schematic diagram of the push-pull member of the present invention.
  • FIG. 8 is a schematic view of a section 1 of a state 1 of the stapler of the present invention.
  • FIG. 9 is a schematic view of the second section of the first state of the stapler of the present invention.
  • FIG. 10 is an enlarged schematic view of A in FIG. 9 .
  • FIG. 11 is a schematic view of a section 1 when the support of the stapler of the present invention is positioned on the high-level groove.
  • FIG. 12 is a schematic view of the second section when the support of the stapler of the present invention is positioned on the high-level groove.
  • FIG. 13 is an enlarged schematic view of B in FIG. 12 .
  • FIG. 14 is a schematic view of the first section when the support of the stapler of the present invention is positioned on the lower groove.
  • FIG. 15 is a schematic view of the second section when the support of the stapler of the present invention is located on the lower groove.
  • FIG. 16 is an enlarged schematic view of C in FIG. 15 .
  • FIG. 17 is a schematic diagram of Embodiment 1 of the insurance component.
  • FIG. 18 is a schematic diagram of the second embodiment of the insurance component.
  • the present utility model provides an embodiment of a cutting knife mechanism, including: a guide groove 1, a cutting knife 2 and a push-pull member 3, the guide groove 1 includes a high-position groove 11, a transition groove 12 and a lower slot 13, the transition slot 12 is used to connect the upper slot 11 and the lower slot 13; the cutting knife 2 is provided with a support 21, and the support 21 is placed in the guide slot 1 , and the support member 21 can reciprocate in the high-level groove 11, the transition groove 12 and the low-level groove 13, and the cutting knife 2 is hung on the guide groove 1 through the support member 21; the cutting knife 2 is also provided with a first hook 22; the output end of the push-pull member 3 is used to push and pull the cutting knife 2, and the output end of the push-pull member 3 is fixed with a second hook 31; When the cutting knife 2 is pushed from the high groove 11 to the low groove 13 , the first hook 22 approaches the second hook 31 , and when the supporting member 21 reaches the low groove 13 , the first hook 22
  • a hook 22 is engaged with the second hook 31; when the push-pull member 3 pulls the cutting knife 2 from the lower slot 13 to the higher slot 11, the first hook 22 gradually moves away from the The second hook 31 , and when the support member 21 reaches the high-level slot 11 , the first hook 22 and the second hook 31 are disengaged.
  • the first hook 22 and the second hook 31 can be in a buckled state, which can move synchronously with the push-pull action of the push-pull member 3, and when the cutting knife 2 is in a low position, its blade can be exposed in the cutting state,
  • the push-pull member 3 pulls the cutting knife 2 back to a high position, the cutting knife 2 is retracted and hidden, and the first hook 22 and the second hook 31 can be disengaged again, and the cutting knife 2 can be replaced at the same time.
  • the support member 21 is a block structure.
  • the block-shaped structure can prevent the cutting blade 2 from shaking excessively during the cutting process, that is, the block-shaped structure of the support member 21 can have a larger contact area with the guide groove 1 .
  • both the front and rear ends of the support member 21 in the moving direction are provided with guide structures.
  • the design of the guide structure enables the support member 21 to switch positions more smoothly in the high slot 11 , the transition slot 12 and the low slot 13 .
  • the smooth transition between the high-position groove 11 , the transition groove 12 and the low-position groove 13 is also for the purpose of smoother switching of the position of the support member 21 .
  • the left and right sides of the cutting blade 2 in the advancing direction are respectively provided with the support members 21 , and the support members 21 are respectively provided with the guide grooves 1 .
  • Supports 21 are respectively provided on the left and right sides, so that the force of the cutting blade 2 can be balanced, and the state of the cutting blade 2 can be relatively stable during cutting.
  • a stapler includes the cutting knife mechanism described in any of the above embodiments; it also includes a staple cartridge assembly 4 , a staple cartridge base 5 , an anvil seat assembly 6 and staples Universal assembly 7 at the rear end of the magazine; the magazine assembly 4 is detachably installed in the magazine base 5, and the magazine base 5 is rotatably installed on the universal assembly 7 at the rear end of the magazine, and the anvil seat
  • the assembly 6 is fixed on the universal assembly 7 at the rear end of the staple cartridge;
  • the staple cartridge assembly 4 includes a staple cartridge 41, a staple cartridge cover 42, a staple pushing slider 43 and a cutting knife 2; the staple cartridge 41 is used for accommodating sutures
  • the staple cartridge 41 is provided with a through slot 411 along the longitudinal direction, the cutting knife 2 passes through the through slot 411, the staple cartridge 41 is fixed with a first rib 412, and the staple cartridge cover 42
  • a second rib plate is fixed or an inner wall structure 421 matching with the first rib plate 412 is provided,
  • the staple cartridge 41 is a detachable structure.
  • the staple cartridge 41 pushes the staple pushing slider 43 And the cutting knife 2 is pushed into the high-level groove 11 . That is, when the nail cartridge 41 is installed, the nail pushing slider 43 and the cutting knife 2 are deduced to the initial positions, so as to realize the pre-movement for the next use.
  • the magazine base 5 is provided with a mounting groove 51
  • the nail magazine 41 is provided with a mounting protrusion corresponding to the mounting groove 51 . From 413.
  • the cooperation of the installation groove 51 and the installation protrusion 413 can realize the rapid positioning and installation of the staple cartridge 41 and the staple cartridge base 5 .
  • the detachable connection between the staple cartridge cover 42 and the staple cartridge 41 can also be achieved through a similar snap-fit structure.
  • the installation of the staple cartridge cover 42 and the staple cartridge 41, and the specific installation of other structures of the stapler are not the objects of concern in this application, so they will not be described here.
  • the nail pushing slider 43 is provided with a locking groove 431
  • the nail cartridge 41 is provided with a locking protrusion 414
  • the locking protrusion 414 In cooperation with the latching groove 431, the nail pushing slider 43 is clamped on the nail cartridge 41, and the nail pushing slider 43 is located in front of the cutting blade 2.
  • the two cutting knives When the two cutting knives are pushed forward, the two cutting knives push the nail pushing slider 43 forward.
  • the latching protrusions 414 are disengaged from the latching grooves 431 .
  • the locking groove 431 and the locking protrusion 414 cooperate to realize the positioning of the nail pushing slider 43 on the staple cartridge 41 , and at the same time ensure that the nail pushing slider 43 can move forward normally when it is pushed.
  • the locking groove 431 and the locking protrusion 414 are matched by an arc-shaped concave surface and an arc-shaped convex surface. The combination of the arc-shaped concave surface and the arc-shaped convex surface makes the push-pin slider 43 easier to push, and prevents the nail-push slider 43 from being stuck.
  • the stapler further includes: a staple cartridge assembly 4, a staple cartridge base 5 and a staple anvil seat assembly 6, the staple cartridge assembly 4 is detachably installed on the On the magazine base 5;
  • the anvil seat assembly 6 includes an anvil seat body 61 and an anvil plate 62, the anvil plate 62 is fixed on the side wall of the anvil seat body 61, and the anvil plate 62 62 and the bottom wall of the anvil seat body 61 are spaced apart to form a receiving space 60
  • the anvil plate 62 is provided with a safety through hole 621 ; it also includes a safety component, which includes a tab 81 and an elastic member 82 ,
  • the elastic member 82 is an elastic sheet or a spring.
  • the tab 81 is rotated and installed by a pin, the elastic member 82 is fixed on the magazine base 5, the elastic member 82 is also fixed on the tab 81, and the elastic member 82 has the function of allowing the The elastic tendency of the retaining portion 811 of the tab 81 to pass through the safety through hole 621 and enter the accommodating space 60 ; when the staple cartridge assembly 4 is installed on the staple cartridge base 5 , the staple cartridge The assembly 4 cooperates with the tab 81 to overcome the elastic force of the elastic member 82 , and rotates the tab 81 so that the latch portion 811 exits the accommodating space 60 .
  • the safety through hole 621 is opened on the nail plate 62 at the same time, so that the elastic member 82 can let the card
  • the latching portion 811 of the tongue 81 enters the accommodating space 60 through the safety through hole 621. Since the push block is partially placed in the accommodating space 60, when the pushing block moves forward in the accommodating space 60, the latching portion 811 is also accommodated in the accommodating space 60. In the space 60, the push block is blocked, so that the push block cannot push the cutting knife assembly forward.
  • the staple cartridge assembly 4 is installed on the magazine base 5
  • the staple cartridge assembly 4 overcomes the elastic force of the elastic member 82, so that the tab 81 is withdrawn from the accommodating space 60 so as to give way.
  • the push block When the push block is pushed forward, the push block can be unrestricted in the accommodating space 60, so as to realize the driving of the cutting knife assembly and the nail pushing slider.
  • the magazine base 5 is provided with a safety through hole 621 ; the elastic member 82 is fixed on the anvil seat body 61 , and the The elastic member 82 is also fixed on the tab 81 . It has the characteristics of simple structure and convenient manufacture.
  • the tab 81 includes a tab body 812 and a connecting portion 813 , the connecting portion 813 is rotatably installed by the pin 8130 , and the connecting portion 813 is fixed on the One end of the tab body 812 , and the latching portion 811 is fixed on the other end of the tab body 812 .
  • the setting of the connecting portion 813 enables the locking portion 811 to enter the safety through hole 621 at a better angle to achieve the locking effect.
  • the connecting portion 813 and the locking portion 811 are arranged at an angle relative to the tab body 812 , and the connecting portion 813 and the locking portion 811 is located on one side of the tab body 812 , and the elastic member 82 is located on the other side of the tab body 812 .
  • the connection portion 813 and the latching portion 811 are arranged at an angle and are located on the rear side, so that the latching portion 811 can enter the safety through hole 621 at a better angle to achieve the latching effect.
  • the tab 81 further includes a positioning portion 814 , the positioning portion 814 is fixed on the tab body 812 , and the elastic member 82 is connected to the positioning portion 814 , so The positioning portion 814 is located on the other side of the tab body 812 .
  • the positioning portion 814 Through the design of the positioning portion 814 , one end of the elastic member 82 is connected and fixed to the positioning portion 814 , and the other end of the elastic member 82 is fixed to the magazine base 5 .
  • the magazine assembly 4 When the magazine assembly 4 is installed, it can exert force on the positioning portion 814 , thereby Overcoming the elastic force of the elastic member 82 , the tab 81 is turned over, so that the tab 81 can be withdrawn from the accommodating space 60 .
  • the positioning portion 814 and the tab 81 originally form a positioning recess 8140 facing the front side, and the positioning recess 8140 is used to cooperate with the staple cartridge assembly 4 .
  • the staple cartridge assembly 4 includes a nail pushing slider 43 , the positioning recess 8140 is used to cooperate with the nail pushing slider 43 , and the positioning recess 8140 is a protrusion corresponding to the nail pushing slider 43 . out structure match. That is, the positioning recess 8140 can better cooperate with the staple cartridge assembly 4 .
  • FIG. 18 the positioning recess 8140 can better cooperate with the staple cartridge assembly 4 .
  • the nail push slider 43 is provided with a support protrusion 431, and the support protrusion 431 is used to cooperate with the positioning recess 8140.
  • the nail push slider 43 is provided with a rib plate 132.
  • the staple cartridge assembly 4 also includes a staple cartridge 11 and a staple cartridge cover 12 .
  • the safety components are arranged in pairs in the left and right directions.
  • the force can be applied uniformly and at multiple points, and its insurance performance is more reliable.
  • a stapler including the magazine described in any of the above embodiments; and also includes a universal assembly 7 at the rear end of the magazine, and the universal assembly 7 at the rear end of the magazine includes a pusher 3, the pusher 3 can push the cutting blade assembly to move forward, the end of the pusher 3 is provided with a push block 510, and the push block 510 is partially movably embedded in the accommodating space 60.
  • the locking portion 811 When the locking portion 811 enters the accommodating space 60, the locking portion 811 hinders the forward movement of the push block 510, and the locking tongue 81 is rotated and installed on the universal assembly 7 at the rear end of the magazine through the pin 8130;
  • the magazine base 5 is rotatably mounted on the universal assembly 7 at the rear end of the magazine;
  • the anvil seat assembly 6 is fixed on the universal assembly at the rear end. It is not the focus of this application on how the cutting knife assembly cooperates with the nail anvil base assembly 6, the magazine base 5 and the nail cartridge, and those skilled in the art can make adaptive configuration according to the existing technology.
  • the assembly includes a cutting knife, a knife groove 9 is provided between the two nail anvil plates 62 of the nail anvil assembly 6 , and a knife groove 9 is provided on the nail magazine assembly 4 , and the cutting knife moves back and forth along the knife groove 9 .
  • the positional relationship between the push block 510, the cutting knife and the nail pushing slider 43 can be selected so that the pushing block 510 pushes the cutting knife placed in the knife groove 9 to move forward, and when the cutting knife and the nail pushing slider 43 are in contact, the cutting knife is cut.
  • the knife transmits the thrust force to the pushing slider of the rib plate 132 placed in the knife groove 9 to move forward.
  • the push block 510 is an I-shaped structure.
  • the I-shaped structure can be better snapped into the accommodating space 60 , so that the locking tongue 81 can realize its displacement and locking control.
  • a push plate 431 is fixed on the nail push slider 43 , and the push plate 431 is slidably placed in the space formed by the nail magazine cover 42 and the magazine base 5 .
  • the push plate 431 is used to cooperate with the clamping part 413; the nail magazine cover 42 and the nail magazine 41 can be detachably connected through the cooperation of the concave and convex structures.
  • the design of the push plate 431 makes the nail push slider 43 Can fit with tab 81 while also leaving room for accommodating the cutting blade assembly.
  • the nail magazine 41 and the nail magazine cover 42 are provided with a knife groove 9, the cutting knife assembly is slidably installed in the knife groove 9, and the nail pushing slider 43 is provided with a rib plate 432.
  • the rib plate 432 is slidably installed in the knife groove 9 .
  • the knife groove 9 can guide the cutting knife assembly and the nail pushing slider 43 to ensure that they can always be on a fixed trajectory when moving, and to ensure the stability and reliability of the operation.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne une agrafeuse endoscopique qui est utilisée pour résoudre les problèmes de l'état de la technique concernant l'existence d'un risque de sécurité lorsqu'un scalpel (2) est poussé vers l'extérieur mais n'est pas remis à l'état initial, et lorsqu'une structure de sécurité du scalpel (2) affecte la résistance structurale d'une base de boîte à agrafes (5) et est complexe. L'agrafeuse endoscopique comprend : un scalpel (2), un ensemble cartouche d'agrafes (4), une base de boîte à agrafes (5), un ensemble support de butée d'agrafes (6), un ensemble de sécurité et un ensemble universel d'extrémité arrière de boîte à agrafes (7) ; et un élément de poussée-traction (3), une extrémité de sortie de l'élément de poussée-traction (3) est utilisée pour pousser et tirer le scalpel (2), et un second crochet (31) est fixé à l'extrémité de sortie de l'élément de poussée-traction (3) ; l'ensemble cartouche d'agrafes (4) est monté de manière amovible sur la base de boîte à agrafes (5) ; lorsque l'ensemble cartouche d'agrafes (4) est extrait de la base de boîte à agrafes (5), l'ensemble de sécurité empêche l'élément de poussée-traction (3) de se déplacer vers l'avant ; et lorsque l'ensemble cartouche d'agrafes (4) est monté sur la base de boîte à agrafes (5), l'ensemble cartouche d'agrafes (4) surmonte la résistance de l'ensemble de sécurité et libère la limite sur le déplacement vers l'avant et vers l'arrière de l'élément de poussée-traction (3). La présente invention présente une fonction de sécurité et le scalpel (2) peut être automatiquement caché.
PCT/CN2021/076911 2021-01-25 2021-02-19 Agrafeuse endoscopique WO2022156024A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110098956.X 2021-01-25
CN202110098956.XA CN112914644B (zh) 2021-01-25 2021-01-25 一种腔镜吻合器

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WO2022156024A1 true WO2022156024A1 (fr) 2022-07-28

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CN116473606A (zh) * 2022-10-17 2023-07-25 北京博辉瑞进生物科技有限公司 吻合器组件和吻合器

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