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WO2023109787A1 - Mécanisme d'entraînement et agrafeuse médicale - Google Patents

Mécanisme d'entraînement et agrafeuse médicale Download PDF

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Publication number
WO2023109787A1
WO2023109787A1 PCT/CN2022/138532 CN2022138532W WO2023109787A1 WO 2023109787 A1 WO2023109787 A1 WO 2023109787A1 CN 2022138532 W CN2022138532 W CN 2022138532W WO 2023109787 A1 WO2023109787 A1 WO 2023109787A1
Authority
WO
WIPO (PCT)
Prior art keywords
stopper
firing handle
driving mechanism
rack
mechanism according
Prior art date
Application number
PCT/CN2022/138532
Other languages
English (en)
Chinese (zh)
Inventor
丁水澄
Original Assignee
天臣国际医疗科技股份有限公司
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
Priority claimed from CN202123142699.XU external-priority patent/CN217118487U/zh
Priority claimed from CN202111529333.XA external-priority patent/CN116262058A/zh
Application filed by 天臣国际医疗科技股份有限公司 filed Critical 天臣国际医疗科技股份有限公司
Publication of WO2023109787A1 publication Critical patent/WO2023109787A1/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
    • 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

Definitions

  • the escape portion is a groove disposed at the lateral middle of the rack and recessed in a direction away from the firing handle.
  • the stopper is located in the second position area, and when the firing handle rotates in the first direction, the driving part of the firing handle cooperates with the rack to drive The actuating rod moves toward the distal side of the stapler.
  • the entire second side of the switching button is a plane extending in the transverse direction, and the first side of the second matching portion of the switching button faces toward the near side relative to the first side of the first matching portion. Protruding sideways.
  • the housing of the stapler is provided with a support that protrudes inwardly, the stopper body is disposed at the support, and the stopper body can move along the support. axial movement.
  • the invention provides a driving mechanism for a medical stapler.
  • a driving mechanism for a medical stapler By setting a stopper, in the process of holding the firing handle to close the nail head, due to the stopper function of the stopper, the driving part of the firing handle will not come into contact with the nail head.
  • the racks When the racks cooperate, the racks will not be driven to move to the distal side, and the stapler cannot be fired, which improves the safety and effectiveness of the stapler.
  • Fig. 3 is a structural schematic diagram of the cooperation between the housing and the switching assembly in the initial state of an embodiment of the present invention
  • Fig. 5 is a schematic diagram of the cooperation between the switching assembly and the actuating lever according to an embodiment of the present invention, and the stopper is located in the first position area;
  • Fig. 9 is a schematic structural diagram of a switching button according to an embodiment of the present invention.
  • Fig. 10 is a schematic structural view of the driving assembly when holding the firing handle according to an embodiment of the present invention.
  • Fig. 14 is a schematic diagram of the cooperation between the claw and the stopper of the firing handle according to an embodiment of the present invention, and the stopper is located in the second position area;
  • the invention provides a driving mechanism for a medical stapler and a medical stapler comprising the same.
  • the stapler also includes a nail head and a stapler body, and the nail head is disposed on the distal side of the stapler body.
  • the driving mechanism includes: a firing handle, including a driving member, and the firing handle is rotatable in a first direction; an actuating rod, a rack is provided on a side of the actuating rod facing the firing handle; and a stopper , including a stop part, the stop part is at least partly movably provided on one side of the actuating rod provided with the rack, and the stop part can move between the first position area and the second position area.
  • the stopper part when the nail head needs to be closed, the stopper part is located in the first position area. At this time, when the firing handle is operated so that the firing handle rotates in the first direction to drive the nail head to close, the driving member is opposed to the stopper, so that the driving member and the tooth If the rack is separated, the driving member cannot drive the rack to move toward the distal side, and thus the stapler cannot be fired.
  • the S1 direction and/or the direction opposite to the S1 direction as the axial direction of the stapler.
  • the S2 direction in FIG. 3 is defined as the longitudinal direction, that is, the height direction.
  • the direction S3 in FIG. 3 is defined as the lateral direction, that is, the width direction.
  • the nail head 9 includes an anvil 91 and a nail cartridge assembly 92 oppositely arranged, the proximal side of the nail anvil 91 is rotatably connected to the proximal side of the nail cartridge assembly 92,
  • the anvil 91 has an open state and a closed state relative to the staple cartridge assembly 92 .
  • the proximal side of the nail anvil 91 is provided with a first matching groove 911
  • the proximal side of the nail cartridge assembly 92 is provided with a second matching groove 921 extending axially
  • a closing pin 93 is simultaneously installed in the The first fitting groove 911 , the second fitting groove 921 and the distal side of the closing tab 94 ( FIG. 2 ).
  • the closing pin 93 When the closing tab 94 moves toward the proximal side, the closing pin 93 also moves toward the proximal side, driving the nail anvil 91 to move toward the nail cartridge assembly 92 to close the nail head 9 .
  • the closing pin 93 also moves toward the distal side, driving the nail anvil 91 to move away from the nail cartridge assembly 92 to open the nail head Part 9.
  • the stopper portion 83 is located in the first position area.
  • the firing handle 3 is operated so that the firing handle 3 rotates along the first direction, and the firing handle 3 drives the closing tab 94 to move toward the proximal side to close the nail head, and at the same time, the driving member 31 abut against the stopper portion 83 so that the driving member 31 is separated from the rack 21, so the driving member 31 cannot drive the rack 21 to move in the direction of the distal end, and the anastomosis cannot be fired. device.
  • the stopper portion 83 further includes a second position area, and the second position area is located on the proximal side of the first position area.
  • the stop portion 83 shown in FIG. 4 and FIG. 5 is in the first position area.
  • the stop portion 83 is located on the side of the distal end of the driving member 31 facing the rack 21, so The side surface of the stop portion 83 facing the firing handle 3 is flush with the side surface of the rack 21 facing the firing handle 3 , or, the stop portion 83 faces the firing handle 3
  • One side surface of the rack 21 protrudes from the side surface of the firing handle 3 to ensure that the driving member 31 cannot enter between the teeth 212 of the rack 21 due to the stopper effect of the stopper 83 .
  • the driving member 31 of the firing handle 3 is no longer stopped by the stopper 83, but can enter into the rack Between the teeth 212 of 21, cooperate with the rack 21, and drive the actuating rod 2 to move toward the distal side of the stapler, so as to realize the firing of the stapler.
  • the stopper 8 also includes a stopper body 81 .
  • the stopper portion 83 is located in the first position area, and the second matching portion 72 of the switch button 7 is matched with the stopper body 81.
  • the stopper body 81 is mated, the stopper portion 83 is located in the second position area.
  • the drive mechanism of the present invention can be used in conjunction with various closure mechanisms.
  • it is described by taking the closing mechanism including the connecting rod assembly 4 and the closing pull rod assembly 5 as an example.
  • the present invention is not limited thereto, and other structures that can realize the closing of the nail head 9 by driving the firing handle 3 can also be used in combination with the driving mechanism of the present invention. As shown in FIG.
  • the connecting rod assembly 4 includes a first state and a second state, both of which are relatively balanced states. As shown in Figure 4, in the initial state, the linkage assembly 4 is in the first state, and the linkage assembly 4 is in a relatively compact state, that is, the first pivot joint 412 and the second pivot joint 412 are in a relatively compact state. The axial distance between portions 422 is relatively small. By holding the firing handle 3, the link assembly 4 can be driven from the first state to the second state.
  • the stopper body 81 is provided with a chute 811 extending in the axial direction
  • the housing 13 of the stapler body 1 is provided with a guide block 17, the The guide block 17 at least partially enters the chute 811 and can move along the extending direction of the chute 811 , so that the stopper body 81 can move axially relative to the housing 13 of the stapler body 1 . movement, and restrict the stopper body 81 from longitudinal movement relative to the housing 13 of the stapler body 1 .
  • the chute 811 includes a first section and a second section, the first section is located at the proximal side of the second section.
  • the switching button 7 includes a first matching portion 71 and a second matching portion 72 , and the switching button 7 is axially fixed to the housing 13 of the stapler body 1 .
  • the axial width of the first matching portion 71 is smaller than the axial width of the second matching portion 72 , and the first matching portion 71 and the second matching portion 72 are arranged laterally.
  • the stopper body 81 includes an accommodating cavity 812, and the accommodating cavity 812 includes a first inner wall and a second inner wall opposite to each other. In the perspective of FIG. 6, the first inner wall of the accommodating cavity 812 is right side inner wall, and the second inner wall is the left inner wall.
  • the switch button 7 at least partly enters the accommodating cavity 812, the first side of the switch button 7 fits with the first inner wall of the accommodating cavity 812, and the second side of the switch button 7 matches with the first inner wall of the accommodating cavity 812.
  • An elastic member is provided between the second inner walls of the accommodating cavity 812, and the elastic member can maintain the state of the switching button 7 so that the stopper 83 stays in the first position area or the second location area.
  • the elastic member can give the second side of the switching button 7 a biasing force toward the proximal side, so that When no external force is applied, the stop portion 83 stays in the first position area.
  • the first side of the switch button 7 is provided with a guide surface 731, and the guide surface 731 is connected to the first side of the first matching portion 71 and the first side of the first matching portion 71.
  • the guide surface 731 is an inclined surface for transition between the first matching portion 71 and the second matching portion 72, so that the stopper body 81 faces the It is smoother when moving in the proximal direction.
  • a portion provided with a guiding surface 731 between the first matching portion 71 and the second matching portion 72 is defined as a connecting portion 73 .
  • the proximal side of the first arm 821 of the stopper 8 also at least partially enters the escape portion 211 , and the proximal side of the first arm 821 facing the side surface of the firing handle 3 does not protrude beyond the The side surface of the rack 21 facing the firing handle 3 will not block the distal end of the driving member 31 from entering between the teeth 212 of the rack 21 . Therefore, in the state of FIG. 15 , when the firing handle 3 is held again to rotate in the direction R1 in FIG. The stapler moves in the direction of the distal end, and the rack 21 drives the entire actuating rod 2 to move in the direction of the distal end, thereby firing the stapler.

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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)

Abstract

La présente invention concerne un mécanisme d'entraînement et une agrafeuse médicale. Le mécanisme d'entraînement comprend : une poignée de déclenchement comprenant un élément d'entraînement, la poignée de déclenchement pouvant tourner dans une première direction ; un levier d'actionnement pourvu d'une crémaillère sur le côté du levier d'actionnement faisant face à la poignée de déclenchement ; et un élément d'arrêt comprenant une partie d'arrêt, la partie d'arrêt étant au moins partiellement disposée de façon mobile sur le côté du levier d'actionnement où la crémaillère est agencée, et la partie d'arrêt étant mobile entre une première zone d'emplacement et une seconde zone d'emplacement, la partie d'arrêt étant située dans la première zone d'emplacement, et lorsque la poignée de déclenchement est tournée dans la première direction, l'élément d'entraînement vient en butée contre la partie d'arrêt, de telle sorte que l'élément d'entraînement n'entraîne pas un mouvement de la crémaillère. Selon la présente invention, au moyen de l'agencement de l'élément d'arrêt, lorsque la poignée de déclenchement est maintenue pour fermer une partie de tête d'agrafe, en raison de l'effet d'arrêt de la partie d'arrêt, l'élément d'entraînement de la poignée de déclenchement ne vient pas en prise avec la crémaillère, de telle sorte que la crémaillère n'est pas entraînée pour se déplacer vers un côté distal, et l'agrafeuse ne peut ainsi pas être déclenchée.
PCT/CN2022/138532 2021-12-14 2022-12-13 Mécanisme d'entraînement et agrafeuse médicale WO2023109787A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202111529333.X 2021-12-14
CN202123142699.XU CN217118487U (zh) 2021-12-14 2021-12-14 驱动机构及医用吻合器
CN202123142699.X 2021-12-14
CN202111529333.XA CN116262058A (zh) 2021-12-14 2021-12-14 驱动机构及医用吻合器

Publications (1)

Publication Number Publication Date
WO2023109787A1 true WO2023109787A1 (fr) 2023-06-22

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PCT/CN2022/138532 WO2023109787A1 (fr) 2021-12-14 2022-12-13 Mécanisme d'entraînement et agrafeuse médicale

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WO (1) WO2023109787A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040232201A1 (en) * 2001-10-05 2004-11-25 Thomas Wenchell Surgical stapling device
CN108403176A (zh) * 2018-03-29 2018-08-17 盈甲医疗器械制造（上海）有限公司 一种具有保险装置的吻合器
CN209018829U (zh) * 2018-06-05 2019-06-25 常州市康迪医用吻合器有限公司 用于腔镜下切割吻合器的转向装置
CN217118487U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 驱动机构及医用吻合器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040232201A1 (en) * 2001-10-05 2004-11-25 Thomas Wenchell Surgical stapling device
CN108403176A (zh) * 2018-03-29 2018-08-17 盈甲医疗器械制造（上海）有限公司 一种具有保险装置的吻合器
CN209018829U (zh) * 2018-06-05 2019-06-25 常州市康迪医用吻合器有限公司 用于腔镜下切割吻合器的转向装置
CN217118487U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 驱动机构及医用吻合器

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