WO2024251018A1 - Dispositif de perforation - Google Patents

Dispositif de perforation Download PDF

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Publication number
WO2024251018A1
WO2024251018A1 PCT/CN2024/096226 CN2024096226W WO2024251018A1 WO 2024251018 A1 WO2024251018 A1 WO 2024251018A1 CN 2024096226 W CN2024096226 W CN 2024096226W WO 2024251018 A1 WO2024251018 A1 WO 2024251018A1
Authority
WO
WIPO (PCT)
Prior art keywords
puncture
puncture device
tip
accommodating
accommodating cavity
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/096226
Other languages
English (en)
Chinese (zh)
Inventor
孙强
陈志�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Touchstone International Medical Science Co Ltd
Original Assignee
Touchstone International Medical Science Co Ltd
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 Touchstone International Medical Science Co Ltd filed Critical Touchstone International Medical Science Co Ltd
Publication of WO2024251018A1 publication Critical patent/WO2024251018A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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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
    • A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles

Definitions

  • Digestive tract diseases are one of the most common diseases in humans.
  • circular tubular staplers are often used to replace the doctor's manual operation to anastomose the digestive tract and other physiological tissues.
  • Circular tubular staplers are a common surgical instrument, most of which use axial internal stapling to form end-to-end or end-to-side anastomosis of physiological tissues such as the esophagus, stomach, and intestines during surgery.
  • a puncture device is generally provided for use in conjunction with the stapler.
  • the existing puncture device structure such as that disclosed in Chinese patent CN201492459U, is a rod-shaped structure, a puncture portion is provided at its proximal end, and a through hole is provided in the puncture portion.
  • the distal end of the puncture device is first connected to the anvil shaft of the circular tubular stapler, the proximal side of the puncture device pierces the tissue, the lead wire is passed into the through hole of the puncture device, and the lead wire is pulled by the hook needle to pull the puncture device out of the tissue stump. Then separate the puncture device from the anvil shaft, connect the anvil shaft to the body of the circular tubular stapler, and then perform the anastomosis operation of the circular tubular stapler.
  • the operator may use surgical scissors or the like to make a hole in a specific position in advance, use a lead wire to pass through the through hole on the puncture part, and guide the puncture device to extend out of the pre-punched hole through the lead wire.
  • the puncture part may accidentally puncture the tissue and cause tissue damage.
  • the purpose of the present application is to provide a puncture device, when the puncture device is not needed to puncture tissue, the tip portion can be adjusted to a storage state to avoid accidental damage. organize.
  • the present application provides a puncture device, which comprises:
  • a matching portion the matching portion being detachably connected to the anvil shaft of the circular tubular stapler;
  • the puncture part includes a tip part and a first connecting part, the tip part is connected to the accommodating part through the first connecting part, and the tip part has a puncture state exposed at the proximal end of the accommodating cavity and a storage state at least partially entering the accommodating cavity.
  • the first connection portion is rotatably connected to the inner wall of the accommodating cavity via a rotation axis; wherein the rotation axis is fixed to the outer wall of the first connection portion, or the rotation axis is fixed to the inner wall of the accommodating cavity.
  • the accommodating portion includes two fixed arms, the accommodating cavity is formed between the two fixed arms, and the first connecting portion is rotatably connected to the two fixed arms.
  • the puncture portion further includes a threading portion, in which a through hole is provided, and the threading portion and the tip portion are respectively connected to two ends of the first connection portion, and when the tip portion is in the puncture state, the threading portion at least partially enters the accommodating cavity.
  • the extension direction of the through hole is perpendicular to the axis of the puncture device.
  • the through hole includes an extension section, and when the tip portion is in the storage state, there is a first angle between the extension direction of the extension section and the axial direction of the puncture device, and the first angle is greater than or equal to 0° and less than 90°; there is a second angle between the extension direction of the extension section and the outer contour direction of the threading portion, and the second angle is greater than or equal to 0°.
  • the through hole also includes a guide section, which is connected to the distal end of the extension section, the opening of the guide section is located on the side wall of the first connecting portion, and the opening of the guide section is exposed to the accommodating portion, and the opening of the extension section is located at the center of one end of the threading portion away from the tip portion.
  • the first connecting portion includes a first surface and a second surface that are oppositely disposed, and the first surface and the second surface are rotatably connected to the fixed arm respectively;
  • the first connecting portion further includes a third surface, and the opening of the guide section is located on the third surface of the first connecting portion.
  • the proximal outer wall surface of the fixing arm is an inclined surface, and when the tip portion is in the puncture state, the proximal outer wall surface of the fixing arm and the outer wall surface of the tip portion have the same inclination angle.
  • the present application provides a new puncture device structure, in which the tip of the puncture portion is arranged to be in a retractable state.
  • the tip When the puncture device is needed to puncture tissue, the tip is in a puncture state, and it is exposed outside the accommodating cavity and can puncture tissue through the tip.
  • the tip When the puncture device is not needed to puncture tissue, the tip can be adjusted to a retracted state, and the tip is at least partially retracted in the accommodating cavity, and the tip will not contact the tissue, thereby effectively avoiding accidental damage to the tissue.
  • FIGS. 1 and 2 are schematic diagrams of the structure of a puncture device according to an embodiment of the present application, wherein the tip portion is in a puncture state;
  • FIG4 is a top view of a trocar according to an embodiment of the present application.
  • Fig. 5 is a cross-sectional view taken along the direction A1-A1 in Fig. 4;
  • FIG7 is an exploded view of a trocar according to another embodiment of the present invention.
  • FIG8 is a top view of a trocar according to another embodiment of the present invention.
  • FIG9 is a cross-sectional view taken along the direction A2-A2 in FIG8 ;
  • FIG. 10 is a schematic structural diagram of a stapler anvil assembly of a circular tubular stapler.
  • the tip portion also has a function of at least partially entering the housing cavity.
  • the storage state of the cavity means that when there is no need to use the puncture device to puncture the tissue, the tip portion can be adjusted to the storage state, and the tip portion is at least partially stored in the accommodating cavity, and the tip will not contact the tissue, thereby effectively avoiding accidental damage to the tissue.
  • the distal end and the proximal end are described by the distance relative to the operator after the puncture device is connected to the anvil shaft.
  • the distal end is the end away from the operator, that is, close to the surgical site
  • the proximal end is the end close to the operator, that is, away from the surgical site.
  • the puncture device 10 includes: a matching portion 1, the matching portion 1 is detachably connected to the anvil shaft 71 of the circular tubular stapler; a housing portion 3, which is arranged on the proximal side of the matching portion 1, and the housing portion 3 includes a housing cavity 31 opening toward the proximal side; a puncture portion 5, the puncture portion 5 includes a tip portion 51 and a first connecting portion 52, and the tip portion 51 is connected to the housing portion 3 through the first connecting portion 52.
  • the matching part 1 includes a tapered part 11 and a stepped part 12.
  • the proximal end of the anvil shaft 71 of the circular tubular stapler is provided with a structure adapted to the shape of the matching part 1, so that after the matching part 1 is inserted into the proximal end of the anvil shaft 71, when no external force is applied to remove it, the stability of the connection between the matching part 1 and the proximal end of the anvil shaft 71 can be maintained.
  • the puncture device 10 is guided to move out of the tissue by the guide wire, the anvil shaft 71 moves with the puncture device 10.
  • a cylindrical second connecting part 2 is also provided between the matching part 1 and the accommodating part 3, and the overall length of the puncture device 10 can be adjusted by adjusting the length of the second connecting part 2.
  • the tip portion 51 in the puncture state, is conical and its outer diameter gradually decreases from the distal end to the proximal end, so as to form a tip at the proximal end where stress is concentrated and can pierce tissue.
  • the tip portion 51 has a puncture state exposed at the proximal end of the accommodating cavity 31.
  • the tip portion 51 is in the puncture state, and it is exposed outside the accommodating cavity 31 and can pierce tissue with the tip.
  • the tip portion 51 also has a storage state in which at least part of the accommodating cavity 31 is entered.
  • the tip portion 51 can be stored.
  • the tip portion 51 is adjusted to the storage state, and the tip portion 51 is at least partially stored in the accommodating cavity 31, and its tip will not contact the tissue, thereby effectively avoiding accidental damage to the tissue.
  • the accommodating portion 3 includes two fixed arms 32, the accommodating cavity 31 is formed between the two fixed arms 32, and the first connecting portion 52 is rotatably connected to the two fixed arms 32.
  • the first connecting portion 52 includes a first surface and a second surface arranged opposite to each other, the first surface and the second surface are respectively provided with a rotating shaft 6, and the two fixed arms 32 are provided with a matching hole 321, and the rotating shaft 6 is embedded in the matching hole 321 and can rotate relative to the matching hole 321.
  • the tip portion 51 can be adjusted to switch between the puncture state and the storage state. For example, when the tip portion 51 is in the puncture state shown in FIG. 1 and FIG.
  • the matching hole 321 can be a blind hole opened on the inner wall of the fixed arm 32, or a through hole provided on the fixed arm 32.
  • the inner wall of the fixed arm 32 may be fixed with a rotating shaft, and a blind hole or a through hole may be provided in the first connecting portion 52, and the rotating shaft may be embedded in the blind hole or the through hole of the first connecting portion 52, and the first connecting portion 52 may rotate relative to the rotating shaft.
  • the fixed arm 32 may be an elastic arm with a certain elasticity, and during assembly, the rotating shaft 6 and the puncture portion 5 may be installed together in the fixed arm 32 as a whole, and the puncture portion 5 and the rotating shaft 6 may be integrally formed or separately formed and fixed to each other, and then the puncture portion 5 may be stably held therein by the clamping force of the elastic arm, and when the puncture portion 5 rotates until the tip portion 51 is in the puncture state or the storage state, the tip portion 51 may be kept stable in the current state by the elastic holding effect of the fixed arm 32 without applying an external force to make it continue to rotate.
  • the fixed arm 32 may also be a rigid arm, and after the puncture portion 5 is placed separately between the two fixed arms 32 , the rotating shaft is installed through the through hole on the fixed arm 32 .
  • the proximal outer wall surface of the fixing arm 32 is an inclined surface, and when the tip portion 51 is in the puncture state, the proximal outer wall surface of the fixing arm 32 is inclined at the same angle as the outer wall surface of the tip portion 51. Therefore, the outer wall surfaces of the proximal portions of the two fixing arms 32 gradually retract inward from the distal side to the proximal side, forming a smooth transition at the intersection of the tip portion 51, so that at this time, the outer surface of the entirety of the puncture portion 5 and the receiving portion 3 is Creates a streamlined appearance.
  • the puncture portion 5 further includes a threading portion 53, in which a through hole 4 is provided, and the threading portion 53 and the tip portion 51 are respectively connected to the two ends of the first connection portion 52, that is, the threading portion 53 is arranged at one end of the tip portion 51 away from the first connection portion 52.
  • the threading portion 53 When the tip portion 51 is in the puncture state, the threading portion 53 at least partially enters the accommodating cavity 31.
  • the tip portion 51 is in the storage state, the portion of the threading portion 53 provided with the through hole 4 is exposed to the accommodating cavity 31, or a certain operating space is formed between the threading portion 53 and the inner wall of the accommodating cavity 31.
  • the extending direction of the through hole 4 is perpendicular to the axis of the puncture device 10.
  • the tip portion 51 can be adjusted to the puncture state, and the tip portion 51 is used to puncture the tissue.
  • a surgical scissors or the like may be used to punch a hole in a specific position in advance, and a lead wire may be passed through the through hole 4 of the threading portion 53.
  • the lead wire may be used to guide the puncture device 10 to extend out of the pre-punched hole. During this process, it is required to avoid the tip portion 51 piercing the tissue, so the tip portion 51 needs to be kept in the retracted state.
  • FIG. 6 to 9 are schematic diagrams of the structure of the puncture device 10 of another embodiment of the present application, wherein the tip portion 51 shown in FIG. 6 is in a storage state.
  • the difference between this embodiment and the embodiment shown in FIG. 1 to 5 is that the structure of the through hole 4 in the threading portion 53 is different.
  • the through hole 4 includes a guide section 41 and an extension section 42.
  • the guide section 41 is connected to the first end of the extension section 42, the opening of the guide section 41 is located on the side wall of the first connecting portion 52, and the second end opening 43 of the extension section 42 is located at the center of the end of the threading portion 53 away from the tip portion 51, that is, when the tip portion 51 is in the storage state shown in FIG. 6, the second end opening 43 of the extension section 42 is located at the proximal center of the threading portion 53.
  • the extension direction of the extension section 42 is parallel to the axial direction S1 of the puncture device 10.
  • a first angle may be formed between the extension direction of the extension section 42 and the axial direction S1 of the puncture device 10, and the first angle is greater than or equal to 0° and less than 90°, that is, the extension direction of the extension section 42 may be parallel to the axial direction S1 of the puncture device 10, or there may be an acute angle between the extension direction of the extension section 42 and the axial direction S1 of the puncture device 10.
  • the first angle may further be selected to be less than or equal to 30°, but the present application is not limited thereto.
  • a second angle may be formed between the extension direction of the extension section 42 (in this embodiment, parallel to the axial direction S1 of the puncture device 10) and the outer contour 531 of the threading portion 53, and the second angle may be greater than or equal to 0° and less than 90°.
  • the included angle is greater than or equal to 0°, that is, the extending direction of the extension section 42 is parallel to the outer contour 531 direction of the threading portion 53 or forms an acute angle with the outer contour 531 direction of the threading portion 53.
  • the outer contour 531 of the threading portion 53 is conical, and in the cross section of the threading portion 53, the angle between the outer contour lines 531 on both sides of the threading portion 531 is less than 60°.
  • the first surface and the second surface of the first connecting portion 52 are respectively provided with the rotating shaft 6 or with a blind hole or a through hole matched with the rotating shaft 6, and the opening of the guide section 41 is located on the third surface of the first connecting portion 52, so that the opening of the guide section 41 is exposed to the accommodating portion 3, which is convenient for the operator to insert the lead wire from the opening of the guide section 41.
  • the puncture portion 5 can also rotate relative to the accommodating portion 3 to switch the tip portion 51 between the puncture state and the storage state.
  • extension direction of the extension section 42 is parallel to the axial direction of the puncture device 10 or has an acute angle with the axial direction of the puncture device 10, and is no longer perpendicular to the axial direction of the puncture device 10, when the lead wire is used for guiding and pulling out, the guide direction of the lead wire is closer to the axial direction of the puncture device 10, reducing the accidental deflection of the puncture portion 5 to the surroundings, thereby making it easier to pull the puncture device 10 out of the tissue.
  • the guide section 41 is a cone, and the inner diameter of the first end of the guide section 41 is larger than the inner diameter of the second end of the guide section 41.
  • the distal side of the guide section 41 includes a guide surface 411, and the guide surface 411 is inclined from the inside to the outside toward the distal side.
  • the guide surface 411 can be an inclined flat surface or a curved surface.
  • the guide section 41 can also adopt other structures, such as the distal surface of the guide section 41 is substantially perpendicular to the axial direction of the puncture device 10, etc., all of which belong to the protection scope of the present application.

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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)
  • Pathology (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne un dispositif de perforation. Le dispositif de perforation comprend : une portion de mise en correspondance, la portion de mise en correspondance étant reliée de manière amovible à un arbre d'enclume d'une agrafeuse circulaire ; une portion de réception disposée sur le côté proximal de la portion de mise en correspondance, la portion de réception comprenant une cavité de réception qui s'ouvre vers le côté proximal ; et une portion de perforation, la portion de perforation comprenant une portion pointe et une première portion de liaison, la portion pointe étant reliée à la portion de réception au moyen de la première portion de liaison, et la portion pointe ayant un état de perforation dans lequel la portion pointe est exposée à partir de l'extrémité proximale de la cavité de réception et un état de stockage dans lequel la portion pointe entre au moins partiellement dans la cavité de réception. Selon la présente invention, lorsqu'il n'est pas nécessaire d'utiliser le dispositif de perforation pour perforer un tissu, la portion pointe peut être réglée vers l'état de stockage pour éviter des lésions accidentelles du tissu.
PCT/CN2024/096226 2023-06-06 2024-05-30 Dispositif de perforation Pending WO2024251018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202321421690.9U CN220089595U (zh) 2023-06-06 2023-06-06 穿刺器
CN202321421690.9 2023-06-06

Publications (1)

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WO2024251018A1 true WO2024251018A1 (fr) 2024-12-12

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PCT/CN2024/096226 Pending WO2024251018A1 (fr) 2023-06-06 2024-05-30 Dispositif de perforation

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WO (1) WO2024251018A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN220089595U (zh) * 2023-06-06 2023-11-28 天臣国际医疗科技股份有限公司 穿刺器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001070307A (ja) * 1999-09-01 2001-03-21 Fuji Photo Optical Co Ltd 組織採取装置
JP2002028237A (ja) * 2000-07-18 2002-01-29 Terumo Corp 穿刺具
CN103908318A (zh) * 2012-12-29 2014-07-09 苏州天臣国际医疗科技有限公司 钉砧拉杆
CN204600612U (zh) * 2015-02-04 2015-09-02 陈树涛 多功能骨科手术刀
CN210697721U (zh) * 2019-07-15 2020-06-09 天臣国际医疗科技股份有限公司 穿刺杆及穿刺杆组件
CN113286626A (zh) * 2019-03-04 2021-08-20 泰尔茂株式会社 导丝
CN216258581U (zh) * 2021-10-29 2022-04-12 四川轻化工大学 一种具有一体式针帽的安全型穿刺器
CN216535401U (zh) * 2021-11-30 2022-05-17 张继新 一种改良型管型吻合器
CN218684516U (zh) * 2022-05-21 2023-03-24 旭仁其木格 一种蒙医放血针
CN220089595U (zh) * 2023-06-06 2023-11-28 天臣国际医疗科技股份有限公司 穿刺器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001070307A (ja) * 1999-09-01 2001-03-21 Fuji Photo Optical Co Ltd 組織採取装置
JP2002028237A (ja) * 2000-07-18 2002-01-29 Terumo Corp 穿刺具
CN103908318A (zh) * 2012-12-29 2014-07-09 苏州天臣国际医疗科技有限公司 钉砧拉杆
CN204600612U (zh) * 2015-02-04 2015-09-02 陈树涛 多功能骨科手术刀
CN113286626A (zh) * 2019-03-04 2021-08-20 泰尔茂株式会社 导丝
CN210697721U (zh) * 2019-07-15 2020-06-09 天臣国际医疗科技股份有限公司 穿刺杆及穿刺杆组件
CN216258581U (zh) * 2021-10-29 2022-04-12 四川轻化工大学 一种具有一体式针帽的安全型穿刺器
CN216535401U (zh) * 2021-11-30 2022-05-17 张继新 一种改良型管型吻合器
CN218684516U (zh) * 2022-05-21 2023-03-24 旭仁其木格 一种蒙医放血针
CN220089595U (zh) * 2023-06-06 2023-11-28 天臣国际医疗科技股份有限公司 穿刺器

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