WO2020151345A1 - 用于外科手术器械的钉仓及外科手术器械 - Google Patents

用于外科手术器械的钉仓及外科手术器械 Download PDF

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Publication number
WO2020151345A1
WO2020151345A1 PCT/CN2019/119078 CN2019119078W WO2020151345A1 WO 2020151345 A1 WO2020151345 A1 WO 2020151345A1 CN 2019119078 W CN2019119078 W CN 2019119078W WO 2020151345 A1 WO2020151345 A1 WO 2020151345A1
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WO
WIPO (PCT)
Prior art keywords
staple cartridge
nail
suture
cutting knife
surgical instruments
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PCT/CN2019/119078
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English (en)
French (fr)
Inventor
杜运峰
张翚
刘殿臣
Original Assignee
苏州英途康医疗科技有限公司
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Publication of WO2020151345A1 publication Critical patent/WO2020151345A1/zh

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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
    • A61B17/068—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
    • A61B17/32—Surgical cutting instruments
    • A61B17/3209—Incision instruments
    • 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 a staple cartridge used for surgical instruments and surgical instruments, belonging to the field of medical instruments.
  • the firing push rod pushes the nail pusher arranged in the nail chamber to complete the firing action of the titanium nail.
  • the cutting knife located at the distal end of the cutting blade lags behind the wedge-shaped head at the far end of the push rod.
  • the firing push rod and the cutting knife push rod move at the same time. Due to the hysteresis relationship between the wedge-shaped head of the push rod and the cutting knife, the titanium nails in the nail magazine are formed first , The cutting knife 3-5mm behind the wedge-shaped head of the push nail lags behind cutting the completed tissue.
  • the U-shaped staples act on the wedge-shaped head at the distal end of the firing pusher to push the pusher blade to squeeze the titanium staples to form B-shaped staples.
  • the displacement of the tissue affect the height and consistency of the nails.
  • the nails are highly discrete and local bleeding after anastomosis.
  • the cutting knife of the existing structure is integrally formed with the distal end of the cutting knife bar.
  • the existing stapler often has 2 or 3 rows of suture sets on the staple cartridge, and multiple sutures are fired at the same position inside and outside during the firing process. Due to the simultaneous firing, when the inner and outer suture nails contact and suture the tissue, the surrounding tissue will be squeezed out, which will affect the suture effect of the tissue, resulting in tissue leakage and wound bleeding.
  • the present invention provides a staple cartridge with inner and outer staples stepped into nails, which effectively reduces the maximum load of the instrument during operation and improves the safety factor of the instrument.
  • the purpose of the present invention is to provide a staple cartridge for surgical instruments and surgical instruments, which push the nail pusher by using push blocks with cam groups of different lengths, so that the inner suture nails are fired first, and the outer suture nails are followed. Firing, so as to ensure better suture effect of the suture nails, avoid tissue leakage, wound bleeding, etc.; and the internal and external step-by-step nailing method effectively reduces the maximum load when the device is working, and improves the safety factor of the device.
  • a staple cartridge for surgical instruments comprising a staple cartridge body, suture staples arranged in the staple cartridge body, a staple pusher for pushing the staples, and A pushing block that pushes the nail pusher;
  • the pushing block includes a bottom plate and two parallel first cam groups and two parallel second cam groups that are perpendicular to the bottom plate, two of the first cam groups Located between the two second cam groups, in the moving direction of the pushing block, the end of the first cam group is located in front of the end of the second cam group.
  • the staple cartridge body is provided with a channel in the longitudinal direction for the pushing block to move, and the staple cartridge body is provided with internal symmetrical inner channels in the longitudinal direction with the channel as the axis of symmetry.
  • a suture cavity and an outer suture cavity, the inner suture cavity is arranged close to the channel relative to the outer suture cavity;
  • the suture nail includes an inner suture nail arranged in the inner suture cavity and an outer suture cavity.
  • the nail pushing piece includes an inner pushing nail piece arranged in the inner suture cavity and an outer pushing nail piece arranged in the outer suture nail, and the inner pushing nail piece is compared with the outer pushing nail piece.
  • the nail piece is arranged close to the suture surface.
  • the height of the inner push nail piece is higher than the height of the outer push nail piece.
  • the nail shaft of the inner suture nail is longer than the nail shaft of the outer suture nail.
  • the staple cartridge further includes a frame body fixed at the bottom of the staple cartridge body and a cover plate covering the top of the staple cartridge body, and the cover plate and the frame body are mechanically connected with the staple cartridge.
  • the staple cartridge further includes a cutting knife holder body and a cutting knife provided on the cutting knife holder body, the staple cartridge body has opposite distal ends and ends, and the ends are connected with surgical instruments
  • the cutting blade holder body is arranged at the distal end; the cutting blade holder body includes a side plate and a clamping part that is engaged with the pull rod, and the side plate is formed with a driving knife The blade does not protrude from the elastic piece of the cutting tool holder body.
  • a rotating shaft is arranged on the side plate, the cutting knife is sleeved on the rotating shaft, and the elastic member is a torsion spring sleeved on the rotating shaft.
  • clamping portion is formed on the side plate.
  • the side plates are two oppositely arranged, and a butting groove for accommodating the cutting knife is formed between the two side plates.
  • the clamping portion is an elastic buckle formed by bending from the side plate toward the mating groove.
  • the present invention also provides a surgical instrument, including the staple cartridge for surgical instruments, a staple anvil assembly butted with the staple cartridge, a handle connecting the staple anvil assembly and the staple cartridge, and The closing lever and drive assembly on the handle.
  • the handle is also provided with a nail push rod and a knife rod, the nail push rod is connected to the drive assembly, the knife rod is arranged at the front end of the nail rod; on the knife rod There is a slot that cooperates with the elastic buckle.
  • the driving assembly drives the nail push rod to move to the distal end
  • the nail push rod drives the pull rod to move to the distal end , So that the elastic buckle is buckled into the card slot.
  • the present invention has the beneficial effects that: the staple cartridge for surgical instruments and the surgical instruments of the present invention push the nail pusher by using push blocks with cam groups of different lengths, where the first The cam group is longer than the second cam group, that is, the end of the first cam group is located on the front side of the end of the second cam group, so that the inner suture nails are fired first, and the outer suture nails are fired later, thereby ensuring better suture effect of the sutures , To avoid tissue leakage and wound bleeding.
  • the use of internal and external steps to form nails effectively reduces the maximum load of the equipment during operation, and improves the safety factor of equipment use.
  • the staple cartridge for surgical instruments and surgical instruments are cut by setting the cutting knife at the distal end of the staple cartridge, and after the suture staples are fired, the knife bar is connected to the cutting knife holder and pulled back to the proximal end to cut. , That is, the tissue is cut after the fired suture nail is completely formed, which ensures the stability of the suture nail molding process, so as to achieve a unified nail height and shape, and reduce the bleeding and leakage of the anastomosis.
  • FIG. 1 is a schematic structural diagram of a staple cartridge according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a staple cartridge body in a staple cartridge according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a push block in a staple cartridge according to an embodiment of the present invention.
  • FIGS. 4 and 5 are structural schematic diagrams of the cutting blade holder body in the staple cartridge according to an embodiment of the present invention.
  • 6 and 7 are schematic diagrams of the structure of a surgical instrument according to an embodiment of the invention.
  • connection should be understood in a broad sense unless otherwise clearly specified and limited.
  • they can be fixed or detachable.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.
  • the staple cartridge for surgical instruments shown in an embodiment of the present invention includes a staple cartridge body 1 and a staple 10 arranged in the staple cartridge body 1, pushing the staples The nail pushing piece 11 of 10, the pushing block 2 that pushes the nail pushing piece 11, and the frame 12 fixed on the bottom of the staple cartridge body 1.
  • a cover plate (not shown) can also be covered on the top of the staple cartridge body 1 to prevent dust and the like from entering the staple cartridge.
  • the frame body 12 and the cover plate are connected to the staple cartridge body 1 through a common mechanical connection method, such as a snap connection, a threaded connection, and the like.
  • the staple cartridge body 1 has opposite distal ends and ends (taking FIG.
  • the proximal end in the present invention refers to the direction indicated by arrow A, and the distal end is the direction opposite to A), and the distal end is relative to the distal end.
  • the cover plate is removed.
  • the staple cartridge body 1 is provided with a channel 13 in the longitudinal direction for the pushing block 2 to move, and the staple cartridge body 1 takes the channel 13 as the axis of symmetry in the longitudinal direction.
  • An inner suture cavity 14 and an outer suture cavity 15 are symmetrically provided on the left and right sides.
  • the inner suture cavity 14 is arranged close to the channel 12 relative to the outer suture cavity 15, and the nail pusher 11 includes the inner sutures respectively provided.
  • the suture nail 10 includes an inner suture nail (not shown) arranged in the inner suture cavity 14 and an outer suture nail (not shown) arranged in the outer suture cavity 15, an inner suture nail and an outer suture
  • the nails are respectively installed on the inner push nail piece and the outer push nail piece.
  • the outer suture nail is used to suture the area close to the tissue anastomosis
  • the inner suture nail is used to suture the area inside the tissue relative to the outer suture nail.
  • the nail pusher 11 has an existing structure, and the installation method of the suture nail 10 is also an existing conventional method, which will not be described here.
  • the pushing block 2 includes a bottom plate 21, two first cam groups 22 arranged in parallel perpendicular to the bottom plate 21 and two second cam groups 23 arranged in parallel, and a limit position perpendicular to the bottom plate 21 Block 24, the two first cam groups 22 are located between the two second cam groups 23, and the limiting block 24 is arranged between the two first cam groups 22.
  • the end of the first cam group 22 is located on the front side of the end of the second cam group 23.
  • the staple cartridge body 1 is also provided with a plurality of sliding grooves 16 for accommodating the first cam group 22 and the second cam group 23, and the first cam group 22 and the second cam group 23 can move relative to the sliding groove 16
  • the limiting block 24 is arranged in the channel 12 to prevent the pushing block 2 from deviating from the moving direction to cooperate and shake when the pushing block 2 moves relative to the staple cartridge body 1.
  • the first cam group 22 pushes the inner push nail piece to fire, so that the inner suture nail is ejected; the second cam group 23 pushes the outer push nail piece to fire, so that the outer suture nail is ejected.
  • first cam group 22 Since the end of the first cam group 22 is located on the front side of the end of the second cam group 23, when the pushing block 2 moves toward the distal end, it will first push the inner push nail piece to be fired, thereby ensuring that it is located in the inner suture cavity
  • the inner staples in 14 are faster than the outer staples.
  • the staple cartridge body 1 has a contact surface 110 contacting the sutured part, a distance d1 is formed between the crown of the inner suture nail and the contact surface 110, and the crown of the outer suture nail is in contact with the contact surface 110.
  • a distance d2 is formed between the surfaces 110, where d1 is smaller than d2, that is, the fixed rod of the inner suture nail is located closer to the contact surface 110 than the nail rod of the outer suture nail.
  • the inner suture nail, or a combination of the two, or the inner suture cavity 14 is set higher than the outer suture cavity 15.
  • the staple cartridge body 1 is further provided with a cutting knife holder body 3 and a cutting knife 30 arranged on the cutting knife holder body 3, and the cutting knife holder body 3 is arranged at the distal end.
  • the cutting knife holder body 3 includes a side plate 31 and a clamping portion 32 that is engaged with the pull rod.
  • a rotating shaft 33 is provided on the side plate 31, and the cutting knife 30 is sleeved on the rotating shaft. 33 on.
  • the side plate 31 is also provided with an elastic member 34 for driving the blade (not shown) of the cutting knife 30 to not protrude from the cutting knife holder body 3.
  • the elastic member 34 is sleeved on the rotating shaft 33 On the torsion spring.
  • the clamping portion 32 is formed on the side plate 31, and the side plates 31 are two oppositely arranged, and a function is formed between the two side plates 31 to accommodate the cutting The butt slot 311 of the knife 30.
  • the clamping portion 32 is an elastic buckle formed by bending from the side plate 31 toward the mating groove 311.
  • the present invention also provides a surgical instrument, including the above-mentioned staple cartridge for surgical instruments, a staple anvil assembly 4 butted with the staple cartridge, connecting the staple anvil assembly 4 and
  • the handle 5 is also provided with a push rod 53 and a pull rod 54 which are connected to the drive assembly, and the pull rod 54 and the push block 2 are arranged at the front end of the push rod 53 ,
  • the broaching lever 54 is provided with a slot 541 that cooperates with the elastic buckle 32.
  • the handle 5 includes a nail cartridge support side handle 55 and a nail anvil side handle 56 which are respectively connected and fixed with the nail cartridge and the nail anvil assembly 4.
  • the working principle of the surgical instrument of the present invention is:
  • the closing pressing rod 51 is pressed to close the jaws (the tissue to be sutured is clamped by the staple cartridge and the staple anvil assembly 4).
  • Pushing the proximal firing push button 52 drives the push rod 53 and the pull rod 54 to move at the same time.
  • the push rods 53 on both sides push the nail pusher 11 inside the staple cartridge to move vertically downwards through the distal head slope to realize the suture 10
  • the sequential compression and deformation eventually form a B-type staple to suture the tissue. Because the pulling bar 54 is lagging behind and hidden inside the staple cartridge, the tissue between the contact surface 110 and the staple anvil surface 41 will not be contacted during the staple forming process.
  • the pull rod 54 contacts the cutting blade holder body 3 inside the distal end of the nail cartridge. Since the cutting knife 30 is mounted on the cutting knife holder body 3 through the rotating shaft 33, when the knife rod 54 is inserted into the docking groove 311, the cutting knife 30 will be rotated and ejected, and the elastic buckle 32 on the side plate 31 will be deformed. Then buckle the slot 541 of the pull bar 54. At this time, the firing of the suture nail 10 is completed, and the process of pulling the firing button 52 back will drive the cutting knife 30 extending from the inside of the cutting knife holder body 3 to cut tissue from the distal end to the proximal end.
  • the staple cartridge for surgical instruments and surgical instruments of the present invention pushes the nail pusher by using push blocks with cam groups of different lengths, wherein the first cam group is longer than the second cam group, namely The end of the first cam group is located on the front side of the end of the second cam group, so that the inner suture nail is fired first, and the outer suture nail is fired later, so as to ensure better suture effect of the suture nail and avoid tissue leakage, wound bleeding, etc. happening.
  • the use of internal and external steps to form nails effectively reduces the maximum load of the equipment during operation, and improves the safety factor of equipment use.
  • the staple cartridge for surgical instruments and surgical instruments are cut by setting the cutting knife at the distal end of the staple cartridge, and after the suture staples are fired, the knife bar is connected to the cutting knife holder and pulled back to the proximal end to cut. , That is, the tissue is cut after the fired suture nail is completely formed, which ensures the stability of the suture nail molding process, so as to achieve a unified nail height and shape, and reduce the bleeding and leakage of the anastomosis.

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Abstract

一种用于外科手术器械的钉仓及外科手术器械，钉仓包括钉仓本体（1）和设置在钉仓本体（1）内的缝合钉（10）、推动缝合钉（10）的推钉片（11）及推动推钉片（11）的推进块（2）；推进块（2）包括底板（21）和垂直于底板（21）上的两个平行设置的第一凸轮组（22）和两个平行设置的第二凸轮组（23），两个第一凸轮组（22）位于两个第二凸轮组（23）之间，于推进块（2）的移动方向上，第一凸轮组（22）的端部位于第二凸轮组（23）的端部的前侧。其通过采用具有不同长度凸轮组的推进块（2）对推钉片（11）进行推动，使得内缝合钉（10）先击发，外缝合钉（10）后击发，从而保证缝合钉（10）缝合效果较佳，避免出现组织泄露、伤口出血等情况。

Description

用于外科手术器械的钉仓及外科手术器械
本申请要求了申请日为2019年1月24日，申请号为201910067890.0的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种用于外科手术器械的钉仓及外科手术器械，属于医疗器械领域。
背景技术
现有直线型切割吻合器击发时通过击发推杆推动布设于钉仓内的推钉片完成钛钉的击发动作，同时位于切割刀杆的远端的切割刀滞后击发推杆远端的楔形头部3-5mm，当用户操作击发推钮完成击发动作时，击发推杆和切割刀推杆同时运动，由于推钉杆楔形头部与切割刀的滞后关系，使得钉仓内的钛钉先成型，位于推钉楔形头部后3-5mm的切割刀滞后切割缝合完成的组织。
然而，由于缝合和切割间隔时间短，U型缝合钉在击发推杆远端楔形头部作用推动推钉片挤压钛钉形成B型缝钉形状未稳定时，立刻进行的切割动作拉扯缝合组织造成组织的移位，影响成钉的高度和一致性。最终出现成钉高度离散性大，吻合后局部出血等现象。同时，现有结构的切割刀与切割刀杆的远端一体成型，器械多次击发时更换了钉仓但无法更换切割刀，容易出现肿瘤细胞的种植和转移。
并且，现有的吻合器在其钉仓的上往往设有2或3排缝合钉组，击发过程中同一位置内外侧有多个缝合钉同时击发。由于其同时击发，当内外侧缝合钉接触并缝合组织时，会将周围组织向外挤出，进而影响组织的缝合效果，产生组织泄露、伤口出血等情况。
基于上述情况，本发明提供了一种内外侧分步成钉的钉仓，有效地降低了器械工作时的最大负载，提高了器械使用的安全系数。
发明内容
本发明的目的在于提供一种用于外科手术器械的钉仓及外科手术器械，其 通过采用具有不同长度凸轮组的推进块对推钉片进行推动，使得内缝合钉先击发，外缝合钉后击发，从而保证缝合钉缝合效果较佳，避免出现组织泄露、伤口出血等情况；并且，内外侧分步成钉的方式有效降低了器械工作时的最大负载，提高了器械使用的安全系数。
为达到上述目的，本发明提供如下技术方案：一种用于外科手术器械的钉仓，包括钉仓本体和设置在所述钉仓本体内的缝合钉、推动所述缝合钉的推钉片及推动所述推钉片的推进块；所述推进块包括底板和垂直于底板上的两个平行设置的第一凸轮组和两个平行设置的第二凸轮组，两个所述第一凸轮组位于两个所述第二凸轮组之间，于所述推进块的移动方向上，所述第一凸轮组的端部位于所述第二凸轮组的端部的前侧。
进一步地，所述钉仓本体在纵长方向上开设有供所述推进块进行移动的槽道，所述钉仓本体在纵长方向上以所述槽道为对称轴左右各对称设有内缝合腔和外缝合腔，所述内缝合腔相对所述外缝合腔靠近所述槽道设置；所述缝合钉包括设置在所述内缝合腔内的内缝合钉和设置在所述外缝合腔内的外缝合钉，所述第一凸轮组推动所述内缝合钉出钉，所述第二凸轮组推动所述外缝合钉出钉，所述钉仓本体具有于被缝合部接触的接触面，所述内缝合钉的钉冠与接触面之间形成有距离d1，所述外缝合钉的钉冠与接触面之间形成有距离d2，其中，d1小于d2。
进一步地，所述推钉片包括设置在所述内缝合腔内的内推钉片和设置在所述外缝合钉内的外推钉片，所述内推钉片相比于所述外推钉片靠近所述缝合面设置。
进一步地，所述内推钉片的高度高于外推钉片的高度。
进一步地，所述内缝合钉的钉杆长于所述外缝合钉的钉杆。
进一步地，所述钉仓还包括固定在所述钉仓本体底部的架体以及盖合在所述钉仓本体顶部的盖板，所述盖板和架体与所述钉仓机械连接。
进一步地，所述钉仓还包括切割刀架体和设置在所述切割刀架体上的切割刀，所述钉仓本体具有相对设置的远端和末端，所述末端与外科手术器械的连 接部连接，所述切割刀架体设置在所述远端；所述切割刀架体包括侧板和与拉刀杆卡持配合的卡持部，所述侧板上形成有驱动所述切割刀的刀刃不突伸出切割刀架体的弹性件。
进一步地，所述侧板上设置有转轴，所述切割刀套设在所述转轴上，所述弹性件为套设在所述转轴上的扭簧。
进一步地，所述卡持部形成在所述侧板上。
进一步地，所述侧板为相对设置的两块，两块所述侧板之间形成有用以容置所述切割刀的对接槽。
进一步地，所述卡持部为自所述侧板上朝所述对接槽内弯折形成的弹性卡扣。
本发明还提供一种外科手术器械，包括所述的用于外科手术器械的钉仓、与所述钉仓对接的钉砧组件、连接所述钉砧组件和钉仓的手柄以及设置在所述手柄上的闭合压杆和驱动组件。
进一步地，所述手柄内还设有推钉杆和拉刀杆，所述推钉杆连接所述驱动组件，所述拉刀杆设置在所述推钉杆的前端；所述拉刀杆上设有与所述弹性卡扣相配合的卡槽，当所述驱动组件驱动所述推钉杆向所述远端移动时，所述推钉杆带动所述拉刀杆向所述远端移动，以使所述弹性卡扣扣入至所述卡槽内。
与现有技术相比，本发明的有益效果在于：本发明的用于外科手术器械的钉仓及外科手术器械通过采用具有不同长度凸轮组的推进块对推钉片进行推动，其中，第一凸轮组长于第二凸轮组，即第一凸轮组的端部位于第二凸轮组的端部的前侧，以使得内缝合钉先击发，外缝合钉后击发，从而保证缝合钉缝合效果较佳，避免出现组织泄露、伤口出血等情况。同时，采用内外侧分步成钉的方式有效降低了器械工作时的最大负载，提高了器械使用的安全系数。
并且，该用于外科手术器械的钉仓及外科手术器械通过将切割刀设置在钉仓的远端，在缝合钉击发完成后，拉刀杆与切割刀架体对接往近端回拉进行切割，即在击发的缝合钉完全成型后再进行组织切割，保证了缝合钉成型过程的稳定，从而实现统一的成钉高度和形态，降低吻合口的出血渗漏的目的。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。
附图说明
图1为本发明一实施例所示的钉仓的结构示意图；
图2为本发明一实施例所示的钉仓中的钉仓本体的结构示意图；
图3为本发明一实施例所示的钉仓中的推进块的结构示意图；
图4和图5为本发明一实施例所示的钉仓中的切割刀架体的结构示意图；
图6和图7为本发明一实施例所示的外科手术器械的结构示意图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“前”、“后”、“轴线方向”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
请参见图1至图5，本发明一实施例所示的用于外科手术器械的钉仓，包括钉仓本体1和设置在所述钉仓本体1内的缝合钉10、推动所述缝合钉10的推钉 片11、推动所述推钉片11的推进块2以及固定在钉仓本体1底部的架体12。在钉仓不使用时，还可以通过在钉仓本体1的顶部盖合盖板(未图示)，从而防止灰尘等进入至钉仓内。本实施例中，该架体12和盖板通过普通的机械连接方式与钉仓本体1进行连接，例如：卡扣连接、螺纹连接等。该钉仓本体1具有相对的远端和末端(以图1为例，本发明中所指的近端为箭头A所指方向，远端为与A相反的方向)，远端相对于末端先进入至被缝合组织中，当钉仓被安装于外科手术器械上后，再将盖板去除。
本发明中，所述钉仓本体1在纵长方向上开设有供所述推进块2进行移动的槽道13，所述钉仓本体1在纵长方向上以所述槽道13为对称轴左右各对称设有内缝合腔14和外缝合腔15，所述内缝合腔14相对所述外缝合腔15靠近所述槽道12设置，并且，推钉片11包括分别设置在所述内缝合腔14内的内推钉片(未图示)和设置在所述外缝合腔15内的外推钉片(未图示)。所述缝合钉10包括设置在所述内缝合腔14内的内缝合钉(未图示)和设置在所述外缝合腔15内的外缝合钉(未图示)，内缝合钉和外缝合钉分别安装设置在内推钉片和外推钉片上。在缝合过程中，外缝合钉用于对靠近组织吻合口的区域进行缝合，内缝合钉则相对于外缝合钉缝合组织内侧的区域。本发明中推钉片11为现有结构，缝合钉10的安装方式也为现有常规方式，在此不再进行阐述。
本发明中，所述推进块2包括底板21、垂直于底板21上的两个平行设置的第一凸轮组22和两个平行设置的第二凸轮组23，以及垂直于底板21上的限位块24，两个所述第一凸轮组22位于两个所述第二凸轮组23之间，限位块24设置在两个第一凸轮组22之间。于所述推进块2的移动方向上，所述第一凸轮组22的端部位于所述第二凸轮组23的端部的前侧。钉仓本体1上还设有容置所述第一凸轮组22和第二凸轮组23的若干滑槽16，所述第一凸轮组22和第二凸轮组23可相对所述滑槽16移动，限位块24设置在槽道12内，以防止推进块2相对于钉仓本体1移动时，推进块2偏离移动方向合作和晃动。所述第一凸轮组22推动所述内推钉片击发，使内缝合钉出钉；所述第二凸轮组23推动所述外推钉片击发，使外缝合钉出钉。由于第一凸轮组22的端部位于所述第二凸轮 组23的端部的前侧，使得该推进块2朝向远端移动时，会先推动内推钉片击发，从而保证位于内缝合腔14内的内缝合钉出钉比外缝合钉更快。
更进一步地，所述钉仓本体1具有于被缝合部接触的接触面110，所述内缝合钉的钉冠与接触面110之间形成有距离d1，所述外缝合钉的钉冠与接触面110之间形成有距离d2，其中，d1小于d2，即内缝合钉的定杆比外缝合钉的钉杆靠近接触面110设置。具体的，在本实施例中，通过将内推钉片相比于外推钉片靠近所述缝合面110设置即可；诚然，在其它实施例中，还可以通过采用具有较长钉杆的内缝合钉，又或者，两者结合，又或者，内缝合腔14相比于外缝合腔15设置的更高。
本发明中，所述钉仓本体1内还设有切割刀架体3和设置在所述切割刀架体3上的切割刀30，且该切割刀架体3设置在所述远端。具体的，所述切割刀架体3包括侧板31和与拉刀杆卡持配合的卡持部32，所述侧板31上设置有转轴33，所述切割刀30套设在所述转轴33上。在侧板31上还设有驱动所述切割刀30的刀刃(未图示)不突伸出切割刀架体3的弹性件34，优选的，该弹性件34为套设在所述转轴33上的扭簧。在本实施例中，所述卡持部32形成在所述侧板31上，所述侧板31为相对设置的两块，两块所述侧板31之间形成有用以容置所述切割刀30的对接槽311。所述卡持部32为自所述侧板31上朝所述对接槽311内弯折形成的弹性卡扣。
请结合图6和图7，本发明还提供一种外科手术器械，包括上述的用于外科手术器械的钉仓、与所述钉仓对接的钉砧组件4、连接所述钉砧组件4和钉仓的手柄5以及设置在所述手柄5上的闭合压杆51和驱动组件(未图示)，其中，闭合压杆51通过导向销510安装在所述手柄5上，所述手柄5上还设有与驱动组件连接并进行操控的击发推钮52。所述手柄5内还设有推钉杆53和拉刀杆54，所述推钉杆53连接所述驱动组件，所述拉刀杆54和推进块2设置在所述推钉杆53的前端，且所述拉刀杆54上设有与所述弹性卡扣32相配合的卡槽541，当所述驱动组件驱动所述推钉杆53向所述远端移动时，所述推钉杆52带动所述拉刀杆54向所述远端移动，以使所述弹性卡扣32扣入至所述卡槽541内。 本发明中，手柄5包括分别与钉仓和钉砧组件4连接固定的钉仓支架侧手柄55和钉砧侧手柄56。
本发明的外科手术器械的工作原理为：
钉仓支架侧手柄55和钉砧侧手柄56对齐导向销后按下闭合压杆51实现钳口的闭合(通过钉仓和钉砧组件4将需要缝合的组织夹住)。推动近端击发推钮52带动推钉杆53和拉刀杆54同时运动，两侧推钉杆53通过远端头部斜面推动钉仓内部的推钉片11垂直向下运动，实现缝合钉10的依次压缩变形最终形成B型缝钉从而缝合组织。因为拉刀杆54滞后且藏于钉仓内部，成钉过程中不会接触处于接触面110和钉砧面41之间的组织。当推钉杆53推至远端使钉仓内所有缝合钉10成型后，拉刀杆54接触钉仓远端内部的切割刀架体3。由于切割刀30通过转轴33安装在切割刀架体3上，拉刀杆54在插入至对接槽311内时，会将切割刀30旋转顶出，同时位于侧板31上的弹性卡扣32变形后扣住拉刀杆54的卡槽541。此时缝合钉10击发完成，击发推钮52拉回过程将带动已从切割刀架体3内部伸出的切割刀30从远端开始切割组织至近端。在切割过程中因为切割刀架体3内部弹性卡扣32两侧由钉仓面侧壁保持住，其无法变形与拉刀杆54脱离直至完成组织的完整切割过程。当切割刀30切完组织后并运行到钉仓近端时，钉仓近端台阶(未图示)挡住切割刀架体3。同时钉仓近端侧面的凹槽(未图示)允许弹性卡扣32变形脱开，从而使得拉刀杆54与切割刀架体3脱离。拉刀杆54与切割刀架体3脱离后，设置在转轴33上的扭簧34使得切割刀30自动收回，防止暴露在外的切割刀30意外划伤使用者。
综上所述：本发明的用于外科手术器械的钉仓及外科手术器械通过采用具有不同长度凸轮组的推进块对推钉片进行推动，其中，第一凸轮组长于第二凸轮组，即第一凸轮组的端部位于第二凸轮组的端部的前侧，以使得内缝合钉先击发，外缝合钉后击发，从而保证缝合钉缝合效果较佳，避免出现组织泄露、伤口出血等情况。同时，采用内外侧分步成钉的方式有效降低了器械工作时的最大负载，提高了器械使用的安全系数。
并且，该用于外科手术器械的钉仓及外科手术器械通过将切割刀设置在钉 仓的远端，在缝合钉击发完成后，拉刀杆与切割刀架体对接往近端回拉进行切割，即在击发的缝合钉完全成型后再进行组织切割，保证了缝合钉成型过程的稳定，从而实现统一的成钉高度和形态，降低吻合口的出血渗漏的目的。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种用于外科手术器械的钉仓，其特征在于，包括钉仓本体和设置在所述钉仓本体内的缝合钉、推动所述缝合钉的推钉片及推动所述推钉片的推进块；所述推进块包括底板和垂直于底板上的两个平行设置的第一凸轮组和两个平行设置的第二凸轮组，两个所述第一凸轮组位于两个所述第二凸轮组之间，于所述推进块的移动方向上，所述第一凸轮组的端部位于所述第二凸轮组的端部的前侧。
  2. 如权利要求1所述的用于外科手术器械的钉仓，其特征在于，所述钉仓本体在纵长方向上开设有供所述推进块进行移动的槽道，所述钉仓本体在纵长方向上以所述槽道为对称轴左右各对称设有内缝合腔和外缝合腔，所述内缝合腔相对所述外缝合腔靠近所述槽道设置；所述缝合钉包括设置在所述内缝合腔内的内缝合钉和设置在所述外缝合腔内的外缝合钉，所述第一凸轮组推动所述内缝合钉出钉，所述第二凸轮组推动所述外缝合钉出钉，所述钉仓本体具有于被缝合部接触的接触面，所述内缝合钉的钉冠与接触面之间形成有距离d1，所述外缝合钉的钉冠与接触面之间形成有距离d2，其中，d1小于d2。
  3. 如权利要求2所述的用于外科手术器械的钉仓，其特征在于，所述推钉片包括设置在所述内缝合腔内的内推钉片和设置在所述外缝合钉内的外推钉片，所述内推钉片相比于所述外推钉片靠近所述缝合面设置。
  4. 如权利要求3所述的用于外科手术器械的钉仓，其特征在于，所述内推钉片的高度高于外推钉片的高度。
  5. 如权利要求1至4项中任意一项所述的用于外科手术器械的钉仓，其特征在于，所述钉仓还包括切割刀架体和设置在所述切割刀架体上的切割刀，所述钉仓本体具有相对设置的远端和末端，所述末端与外科手术器械的连接部连接，所述切割刀架体设置在所述远端；所述切割刀架体包括侧板和与拉刀杆卡持配合的卡持部，所述侧板上形成有驱动所述切割刀的刀刃不突伸出切割刀架体的弹性件。
  6. 如权利要求5所述的用于外科手术器械的钉仓，其特征在于，所述侧板上设置有转轴，所述切割刀套设在所述转轴上，所述弹性件为套设在所述转轴上的扭簧。
  7. 如权利要求6所述的用于外科手术器械的钉仓，其特征在于，所述卡持部形成在所述侧板上。
  8. 如权利要求7所述的用于外科手术器械的钉仓，其特征在于，所述侧板为相对设置的两块，两块所述侧板之间形成有用以容置所述切割刀的对接槽。
  9. 如权利要求8所述的用于外科手术器械的钉仓，其特征在于，所述卡持部为自所述侧板上朝所述对接槽内弯折形成的弹性卡扣。
  10. 一种外科手术器械，其特征在于，包括如权利要求1至9中任一项所述的用于外科手术器械的钉仓、与所述钉仓对接的钉砧组件、连接所述钉砧组件和钉仓的手柄以及设置在所述手柄上的闭合压杆和驱动组件。
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CN112438763A (zh) * 2020-11-12 2021-03-05 美科特医疗科技(苏州)有限公司 一种推钉板带切割刀的钉仓组件
CN112472180A (zh) * 2020-12-17 2021-03-12 山东威瑞外科医用制品有限公司 一种防误激发腔镜吻合器
CN116784911A (zh) * 2023-07-28 2023-09-22 常州安克医疗科技有限公司 一种吻合器用防卡钉自动上料钉仓

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CN114451944B (zh) * 2022-02-09 2024-02-23 天津瑞奇外科器械股份有限公司 一种外科器械及其钉仓组件

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CN116784911A (zh) * 2023-07-28 2023-09-22 常州安克医疗科技有限公司 一种吻合器用防卡钉自动上料钉仓

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