WO2012142872A1 - Straight cutting and stitching device - Google Patents

Straight cutting and stitching device Download PDF

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Publication number
WO2012142872A1
WO2012142872A1 PCT/CN2012/071595 CN2012071595W WO2012142872A1 WO 2012142872 A1 WO2012142872 A1 WO 2012142872A1 CN 2012071595 W CN2012071595 W CN 2012071595W WO 2012142872 A1 WO2012142872 A1 WO 2012142872A1
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WO
WIPO (PCT)
Prior art keywords
bar
notch
staple cartridge
cutter
linear cutting
Prior art date
Application number
PCT/CN2012/071595
Other languages
French (fr)
Chinese (zh)
Inventor
陈望东
傅开芬
Original Assignee
苏州天臣国际医疗科技有限公司
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 苏州天臣国际医疗科技有限公司 filed Critical 苏州天臣国际医疗科技有限公司
Publication of WO2012142872A1 publication Critical patent/WO2012142872A1/en

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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
    • A61B2017/07285—Stapler heads characterised by its cutter
    • 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
    • A61B2017/320052—Guides for cutting instruments

Definitions

  • the invention relates to a linear cutting and stapling device, belonging to the technical field of medical instruments. Background technique
  • Linear cutting staplers are widely used in surgical procedures for wound suturing, internal tissue suturing and cutting.
  • a typical linear cutting stapler is disclosed in US Pat. No. 5,129,570, which has two functions of suturing and cutting, and is used for suturing wounds. At the same time, the excess tissue is removed.
  • the linear cutting stapler generally comprises two upper and lower jaws, and a closing handle for closing the upper and lower jaws, and an anvil and a staple cartridge opposite to the front ends of the upper and lower jaws, and are arranged in the staple cartridge.
  • the firing piece and the cutter are simultaneously moved relative to the staple cartridge, and a push button for driving the firing piece and the cutter movement. Studs are arranged in the staple cartridge, and the firing sheets sequentially push the pusher tabs and push the staples toward the anvil, which cuts the tissue between the staple cartridge and the anvil.
  • the staple cartridge of the device can be replaced multiple times. In clinical use, it is often necessary to suture the tissue several times, so it is necessary to replace the staple cartridge several times during the operation. In order to prevent the doctor from inadvertently accidentally loading the stapled cartridge into the stapler to cause serious consequences of cutting only the unstitched, the prior art linear cutting stapler is provided with a nail to prevent the nail from being fired. The insurance institution that was once again fired (ie, second fired).
  • U.S. Patent No. 5,129,570 discloses an insurance mechanism in which a safety block with a cutter passage and a push rod passage is provided in the middle of the instrument, and a shrapnel is disposed under the cutter.
  • a safety block with a cutter passage and a push rod passage is provided in the middle of the instrument, and a shrapnel is disposed under the cutter.
  • the shrapnel will bounce the knife.
  • the cutter can not pass through the cutter passage to play the role of insurance; when the instrument is mounted on the staple cartridge, and the upper and lower jaws are closed, the staple cartridge presses the top of the knife, so that the cutter overcomes the elastic force of the elastic piece and recovers to When the cutter channel is aligned, the insurance can be released and the device can be fired.
  • the cutter pushes the top of the nail to the top of the knife, so that the cutter is returned to the initial position after the device is fired. It is no longer possible to press the top of the knife, so that the cutter cannot pass through the cutter passage on the safety block to prevent secondary firing.
  • U.S. Patent No. 7,055,730 Another mechanism for preventing secondary firing is disclosed in U.S. Patent No. 7,055,730.
  • the cutter Before the firing, the cutter is provided with a knife sleeve structure, the direction of the sleeve is consistent with the direction of the cutter, and the shaft is connected to the staple cartridge.
  • the knife sleeve rotates, so that the knife sleeve is perpendicular to the cutter, and the instrument can no longer be closed after being opened, thereby preventing the secondary firing.
  • An object of the present invention is to provide a linear cutting stapler which has a structurally simple safety mechanism for preventing secondary firing.
  • a linear cutting stapler comprising: upper and lower jaws that can be closed or opened to each other, a distal end of the lower jaw is provided with a staple cartridge, and the staple cartridge is axially provided with a knife pocket,
  • the lower jaw is U-shaped, and a pusher bar and a pusher bar are slidably disposed therein, a distal end of the pusher bar is provided with a cutter, and a proximal end of the staple cartridge is provided with an insurance mechanism, the insurance
  • the mechanism includes a first pressing block disposed in the staple cartridge, a triggering mechanism and at least one elastic member, a bottom end of the cutting blade is provided with a first notch, and the first pressing block is in the elastic member and the triggering mechanism
  • the longitudinal movement of the staple cartridge can be performed in a manner such that the first pressure block and the first gap can be selectively snapped or separated.
  • the first pressing block includes a latching bar that cooperates with the first notch, and the latching bar can be longitudinally moved in the staple cartridge by the elastic member and the triggering mechanism. So that the card bar and the first notch can be selectively snapped or separated.
  • the proximal end of the staple cartridge is axially provided with two or four slots, the four slots are symmetrically disposed on two sides of the movement groove, and a second gap is formed on the inner side of the groove.
  • the grooves are both connected to the knife groove;
  • the first pressure block is concave, and further includes a floating block disposed at two ends of the card bar and matched with the groove, The card position bar and the floating block cooperate to form a third notch for the cutter to pass; the floating blocks are respectively disposed in the groove.
  • the triggering mechanism is a second pressing block of the H-type, the second pressing block includes a limiting bar, and a limit disposed at the two ends of the limiting bar and matched with the floating block respectively Positioning block; a distal end of the cutter is axially disposed with a limiting slot; the second pressing block is longitudinally movable within the staple cartridge, such that the linear cutting stapler is selectively in two states :
  • the upper surface of the floating block is respectively provided with a fourth gap matching the limiting block, and the limiting block is respectively disposed in the fourth notch.
  • a longitudinally distributed waist groove is respectively disposed on each of the two side walls of the staple cartridge; and two ends of the limiting bar of the second pressing block are longitudinally movable in the waist groove Three raised.
  • a second arc-shaped protrusion is disposed at the slot of the limiting slot, and an upper surface of the limiting lever is a cam surface.
  • the shape and structure of the first pressure block are consistent with the internal structure of the staple cartridge, and the stability of the first pressure block during longitudinal movement in the staple cartridge is high; (3) The elastic member and the first pressure block are conveniently installed;
  • connection between the second pressure block and the first pressure block is relatively stable
  • the second protrusion on the limit groove has a limit function, which makes the safety of the product clear.
  • Figure 1 is an exploded view of the linear cutting stapler in the example
  • Figure 2 is a plan view of the linear cutting stapler in an initial state
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 2;
  • Figure 5 is a cross-sectional view taken along line C-C of Figure 2;
  • Figure 6 is a cross-sectional view of the linear cutting stapler when the cutter is pushed out
  • Figure 7 is a cross-sectional view of the linear cutting stapler when the cutter is pulled back
  • Figure 8 is a cross-sectional view of the linear cutting stapler in a final state. Specific actual 1 ⁇ 2 ⁇
  • a linear cutting stapler comprises: upper and lower jaws (not shown) which can be closed or opened to each other, and the distal end of the lower jaw is provided with a nail.
  • the cartridge 1 has a knife groove 13 axially disposed therein, and the lower jaw is U-shaped, and a pusher bar and a pusher bar (not shown) are slidably disposed therein, and the pusher bar is
  • the distal end is provided with a cutter 2
  • the proximal end of the staple cartridge 1 is provided with a safety mechanism
  • the safety mechanism comprises a first pressure block 4 disposed in the staple cartridge 1, a trigger mechanism and at least one elastic member, and the cutter 2
  • the bottom end is provided with a first notch 22, and the first pressing block 4 can be longitudinally moved in the staple cartridge 1 by the elastic member and the triggering mechanism, so that the first pressing block 4 and the first notch 22 are selectively Ground card or sub-card Specific embodiments of the present invention are further described below by way of specific examples.
  • the linear cutting stapler in this embodiment includes: upper and lower jaws (not shown) that can be closed or opened to each other, and a staple cartridge 1 is disposed at a distal end of the lower jaw.
  • the nail cartridge 1 is provided with a knife groove 13 in the axial direction, and the lower jaw is U-shaped, and a pusher bar and a pusher bar (not shown) are slidably disposed therein, and the distal end of the pusher bar
  • the cutter 2 is provided with a first notch 22 at the bottom end of the cutter 2, and a strip-shaped limiting groove 21 is arranged at the top end thereof, and a circular arc-shaped second portion is arranged at the notch of the limiting groove 21.
  • the protrusion 24, the proximal end of the bottom of the cutter 2 is a circular arc-shaped inclined surface 23, the proximal end of the staple cartridge 1 is provided with a safety mechanism, and the insurance mechanism comprises a second pressure piece 3 disposed in the staple cartridge 1 A pressure block 4 and two elastic pieces 5.
  • the proximal end of the staple cartridge 1 is axially provided with two grooves 11 of the same shape.
  • the grooves 11 are symmetrically disposed on both sides of the knife groove 13 , and a concave groove 12 is defined on the inner side of the groove 11 so as to be concave.
  • the grooves 13 are respectively connected to the cutter groove 13; the two side walls of the staple cartridge 1 are respectively provided with a longitudinally distributed waist groove 14; the first pressure block 3 is concave, and the structure and the internal accommodation formed by the two grooves 11 are formed.
  • the first pressing block 4 includes a locking bar 41 corresponding to the shape of the first notch 22, and a floating block 43 disposed at the two ends of the locking bar 41 and engaging with the groove 13, the floating block 43
  • the upper surface is provided with a rectangular fourth notch 44.
  • the locking bar 41 and the floating block 43 are matched, and the middle portion forms a third notch 42 for the cutter 2 to pass, and the locking bar 41 is in contact with the cutter 2.
  • the second pressing block 3 includes a rectangular limiting rod 31 that cooperates with the limiting groove 21, and is disposed at both ends of the limiting rod 31 and respectively matched with the floating block 43
  • the limit block 32, and the upper surface of the limit bar 31 is a cam surface, which makes it easy Separated from the cutter 2, the two ends of the second press block 3 are respectively provided with third projections 33 which are movable in the waist groove 14.
  • the two elastic pieces 5 are respectively disposed in the corresponding grooves 11.
  • the elastic piece 5 is provided with a circular hole at one end thereof, and the bottom surface of the groove 11 is provided with a cylindrical protrusion corresponding to the circular hole, and the elastic piece 5 is connected through the circular hole.
  • the elastic piece 5 can also pass other Conventional means are attached to the bottom surface of the recess 11, such as: welding, screwing or riveting.
  • the first pressing block 4 is disposed in the accommodating space formed by the two recesses 11.
  • the two floating blocks 43 are respectively disposed in the corresponding recesses 11.
  • the latching bars 41 are located in the space formed by the second notch 12 and the slot 13 .
  • the second pressing block 3 is placed above the first pressing block 4, and the limiting block 32 is respectively placed in the corresponding fourth notch 44.
  • the limiting bar 31 can be selectively placed in the limiting slot 21 on the cutter 2.
  • the upper surface of the limiting rod 31 is a cam surface, which makes it easier to fit and disengage the limiting groove.
  • the second pressure block 3 is longitudinally movable within the staple cartridge 1 such that the linear cutting stapler is selectively in two states:
  • the limiting bar 31 of the second pressing block 3 is in a mating state with the limiting slot of the cutter 2.
  • the cutter can easily be separated from the first
  • the restriction of the two pressure blocks moves forward to cut the tissue.
  • the cutter 2 is pushed out toward the distal end of the staple cartridge 2 in the A direction, and the second projection 24 on the cutter 2 forces the limit lever 31 to move downward, so that the limit groove 21 and the limit bar The phase 31 is disengaged.
  • the limit bar 31 is not subjected to the longitudinal downward pressure of the cutter 2, and the elastic piece 5 acts on the lower surface of the slider 43, so that the first press block 4 and the second press block 3 move longitudinally upward. That is, the position of the card position bar 41 also moves upwards accordingly;
  • the direction moves toward the proximal end of the staple cartridge 2, and the inclined surface 23 of the cutter 2 first comes into contact with the wedge-shaped surface of the card post 41, and the latching lever 41 is longitudinally moved downward by the pressing, followed by the first notch 22 on the cutter 2.
  • the card position bar 41 is engaged in the first notch 22 by the elastic piece 5, and is in the final insurance shape as shown in FIG. Because the external force acts, the limit bar 31 is outside the limit groove 21, and the cutter 2 cannot be separated from the restriction of the card bar 41 even if it is subjected to the thrust at this time, and can not be fired again, thereby preventing the second shot. .
  • the elastic piece 5 may also be replaced by a spring or other elastic member; preferably, the lower surface of the floating block 43 is located longitudinally higher than the plane of the upper surface of the card post 41, so that the slider 43 and the card A step is formed between the bars 41. At this time, the depths of the two grooves 11 can be set shallow, so that the mounting of the elastic piece 5 is more convenient.
  • the beneficial effects of the embodiment are as follows: (1) the structure is simple, the processing is convenient, and the method is safe and reliable, and has good popularization value; (2) the shape and structure of the first pressure block 4 are consistent with the internal structure of the staple cartridge 1, Moreover, the first compact 4 has high stability when moving longitudinally in the staple cartridge 1; (3) the elastic piece 5 and the first compact 4 are conveniently installed; (4) the elastic piece 5 has a simple structure, low cost, and performance.
  • the structure of the second pressing block 3 is simple, and the pushing out of the cutter 2 can cause the entire securing mechanism to be triggered, so that the operation is very convenient; (6) between the second pressing block 3 and the first pressing block 4 The connection is relatively stable; (7) the stability of the second pressing block 3 in the longitudinal movement is high; (8) the second protrusion 24 on the limiting groove 21 has a limiting function, so that the safety of the product is improved.
  • the first pressure block 4 is provided with protruding levers (not shown) on both sides thereof, and the levers are placed in the waist grooves 14 on both sides of the staple cartridge 1.
  • the remaining structure is the same as that of the above embodiment.
  • the toggle lever can be vertically downwardly moved by the manual direction so that the linear cutting stapler is in a fired state.

Abstract

A straight cutting and stitching device comprising an upper clamp and a lower clamp that open or close with each other. Provided at the far end of the lower clamp is a staple chamber (1). A cutting groove (13) is provided on the staple chamber (1) in the axial direction thereof. The lower clamp is U-shaped. A staple-pushing rod and a cutter-pushing rod are slidably disposed inside of the lower clamp. Provided at the far end of the cutter-pushing rod is a cutter (2). Provided at the near end of the staple chamber (1) is a safety mechanism. The safety mechanism comprises a first pressing block (4) inside of the staple chamber (1), a triggering mechanism, and at least one elastic part. Provided at the bottom of the cutter (2) is a first notch (22). The first pressing block (4) moves inside of the staple chamber (1) lengthwise under the action of the elastic part and the triggering mechanism, such that the first pressing block (4) can selectably be locked with or separated from the first notch (22). The straight cutting and stitching device is simple in structure, convenient for processing, safe, and reliable, and has wide uses.

Description

说明书 发明名称： 直线型切割缝合器 本申请要求了申请日为 2011 年 4 月 20 日， 申请号为 201110099702. 6，发明名称为 "直线型切割缝合器" 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。  Title of the Invention: Straight-type cutting and stapling device This application claims priority from Chinese Patent Application No. 201110099702. The content is incorporated herein by reference.
技术领域  Technical field
本发明涉及一种直线型切割缝合器， 属于医疗器械技术领域。 背景技术  The invention relates to a linear cutting and stapling device, belonging to the technical field of medical instruments. Background technique
直线型切割缝合器被广泛用于外科手术中用于伤口缝合、内部组 织缝合与切割，典型的直线型切割缝合器如美国专利 US5129570所揭 示， 具有缝合与切割两个功能， 在进行伤口缝合的同时， 将多余的组 织切除。 该类直线型切割缝合器一般包括上、 下两个钳夹， 以及用于 闭合上、 下钳夹的闭合把手， 相对设置在上、 下钳夹前端的钉砧和钉 仓， 设于钉仓内并可同时相对所述钉仓移动击发片和切刀， 以及用于 驱动所述击发片和切刀移动的推钮。 所述钉仓内排列设置有缝合钉， 所述击发片依次推动推钉片并将缝合钉推向钉砧，所述切刀将位于钉 仓和钉砧之间的组织切断。  Linear cutting staplers are widely used in surgical procedures for wound suturing, internal tissue suturing and cutting. A typical linear cutting stapler is disclosed in US Pat. No. 5,129,570, which has two functions of suturing and cutting, and is used for suturing wounds. At the same time, the excess tissue is removed. The linear cutting stapler generally comprises two upper and lower jaws, and a closing handle for closing the upper and lower jaws, and an anvil and a staple cartridge opposite to the front ends of the upper and lower jaws, and are arranged in the staple cartridge. The firing piece and the cutter are simultaneously moved relative to the staple cartridge, and a push button for driving the firing piece and the cutter movement. Studs are arranged in the staple cartridge, and the firing sheets sequentially push the pusher tabs and push the staples toward the anvil, which cuts the tissue between the staple cartridge and the anvil.
该器械的钉仓是可以更换多次使用的。在临床使用时， 经常需要 多次缝合切割组织， 因此在手术时需要多次更换钉仓。为了防止医生 会因为疏忽而误把已经击发过的钉仓再次装进缝合器而造成只切割 未缝合的严重后果，现有技术的直线型切割缝合器都会设置一种防止 已经被击发过的钉仓再次被击发 （即二次击发） 的保险机构。  The staple cartridge of the device can be replaced multiple times. In clinical use, it is often necessary to suture the tissue several times, so it is necessary to replace the staple cartridge several times during the operation. In order to prevent the doctor from inadvertently accidentally loading the stapled cartridge into the stapler to cause serious consequences of cutting only the unstitched, the prior art linear cutting stapler is provided with a nail to prevent the nail from being fired. The insurance institution that was once again fired (ie, second fired).
美国专利 US5129570号揭示了一种保险机构，在器械的中部设置 一个带有切刀通道与推钉杆通道的保险块， 在切刀下面设置弹片。当 器械处于打开位置（即上、下两个钳夹未闭合）时，弹片将切刀弹起， 使切刀无法通过切刀通道， 起到保险作用； 当器械装上钉仓， 且上、 下两个钳夹闭合后， 钉仓压迫切刀顶部， 使切刀克服弹片的弹力并恢 复到与切刀通道对准的状态， 这时保险解除， 器械可以击发使用， 击 发时， 切刀将钉仓上压迫切刀顶部的部件顶开， 使切刀在器械击发完 毕退回初始位置时， 钉仓不能再压迫切刀顶部， 使切刀无法通过保险 块上的切刀通道， 起到防止二次击发的作用。 U.S. Patent No. 5,129,570 discloses an insurance mechanism in which a safety block with a cutter passage and a push rod passage is provided in the middle of the instrument, and a shrapnel is disposed under the cutter. When the instrument is in the open position (ie, the upper and lower jaws are not closed), the shrapnel will bounce the knife. The cutter can not pass through the cutter passage to play the role of insurance; when the instrument is mounted on the staple cartridge, and the upper and lower jaws are closed, the staple cartridge presses the top of the knife, so that the cutter overcomes the elastic force of the elastic piece and recovers to When the cutter channel is aligned, the insurance can be released and the device can be fired. When the fire is fired, the cutter pushes the top of the nail to the top of the knife, so that the cutter is returned to the initial position after the device is fired. It is no longer possible to press the top of the knife, so that the cutter cannot pass through the cutter passage on the safety block to prevent secondary firing.
美国专利 US7055730号揭示了另一种防止二次击发的机构，在击 发前，切刀的外设有一个刀套结构，刀套的方向与切刀方向保持一致， 并轴连接在钉仓上， 当击发完毕后， 刀套发生旋转， 使刀套垂直于切 刀， 并使器械在打开后无法再闭合， 起到了防止二次击发的作用。  Another mechanism for preventing secondary firing is disclosed in U.S. Patent No. 7,055,730. Before the firing, the cutter is provided with a knife sleeve structure, the direction of the sleeve is consistent with the direction of the cutter, and the shaft is connected to the staple cartridge. When the firing is completed, the knife sleeve rotates, so that the knife sleeve is perpendicular to the cutter, and the instrument can no longer be closed after being opened, thereby preventing the secondary firing.
以上几种结构均非常复杂， 加工组装困难， 价格昂贵。 发明内容  The above several structures are very complicated, difficult to process and assemble, and expensive. Summary of the invention
本发明的目的是提出一种直线型切割缝合器，其具有结构简单的 的防止二次击发的保险机构。  SUMMARY OF THE INVENTION An object of the present invention is to provide a linear cutting stapler which has a structurally simple safety mechanism for preventing secondary firing.
本发明的目的， 将通过以下技术方案得以实现：  The object of the present invention will be achieved by the following technical solutions:
一种直线型切割缝合器，包括：可相互闭合或打开的上、下钳夹， 所述下钳夹的远端设有钉仓， 所述钉仓上轴向设有走刀槽， 所述下钳 夹为 U形， 其内可滑动地设有推钉杆和推刀杆， 所述推刀杆的远端设 有切刀， 所述钉仓的近端设有一保险机构， 所述保险机构包括设置于 所述钉仓内的第一压块、触发机构及至少一弹性件， 所述切刀的底端 设有一第一缺口，所述第一压块在所述弹性件及触发机构的作用下可 在所述钉仓内进行纵向移动，从而使得所述第一压块和第一缺口可选 择性地卡接或分离。  A linear cutting stapler comprising: upper and lower jaws that can be closed or opened to each other, a distal end of the lower jaw is provided with a staple cartridge, and the staple cartridge is axially provided with a knife pocket, The lower jaw is U-shaped, and a pusher bar and a pusher bar are slidably disposed therein, a distal end of the pusher bar is provided with a cutter, and a proximal end of the staple cartridge is provided with an insurance mechanism, the insurance The mechanism includes a first pressing block disposed in the staple cartridge, a triggering mechanism and at least one elastic member, a bottom end of the cutting blade is provided with a first notch, and the first pressing block is in the elastic member and the triggering mechanism The longitudinal movement of the staple cartridge can be performed in a manner such that the first pressure block and the first gap can be selectively snapped or separated.
进一步地，所述第一压块包括一与所述第一缺口相配合的卡位杠， 所述卡位杠在所述弹性件及触发机构的作用下可在所述钉仓内进行 纵向移动， 从而使得所述卡位杠和第一缺口可选择性地卡接或分离。 更进一步地， 所述钉仓的近端轴向设有两四槽， 所述四槽对称地 设置于所述走刀槽的两侧， 且所述凹槽的内侧均设有一第二缺口， 从 而使得所述凹槽均联通于所述走刀槽； 所述第一压块为凹型， 其还包 括设置于所述卡位杠两端、并与所述凹槽相配合的浮动块， 所述卡位 杠和浮动块相配合形成供切刀通行的第三缺口；所述浮动块分别设置 于所述凹槽内。 Further, the first pressing block includes a latching bar that cooperates with the first notch, and the latching bar can be longitudinally moved in the staple cartridge by the elastic member and the triggering mechanism. So that the card bar and the first notch can be selectively snapped or separated. Further, the proximal end of the staple cartridge is axially provided with two or four slots, the four slots are symmetrically disposed on two sides of the movement groove, and a second gap is formed on the inner side of the groove. Therefore, the grooves are both connected to the knife groove; the first pressure block is concave, and further includes a floating block disposed at two ends of the card bar and matched with the groove, The card position bar and the floating block cooperate to form a third notch for the cutter to pass; the floating blocks are respectively disposed in the groove.
更进一步地， 所述触发机构为 H型的第二压块， 所述第二压块包 括限位杠， 及设置于所述限位杠两端、并分别与所述浮动块相匹配的 限位块； 所述切刀的顶端轴向设有一限位槽； 所述第二压块可在所述 钉仓内进行纵向移动，使得所述直线型切割缝合器可选择性地处于两 种状态：  Further, the triggering mechanism is a second pressing block of the H-type, the second pressing block includes a limiting bar, and a limit disposed at the two ends of the limiting bar and matched with the floating block respectively Positioning block; a distal end of the cutter is axially disposed with a limiting slot; the second pressing block is longitudinally movable within the staple cartridge, such that the linear cutting stapler is selectively in two states :
a) 初始状态： 所述限位杠位于所述限位槽内， 且所述卡位杠与 所述第一缺口相分离；  a) an initial state: the limit bar is located in the limit slot, and the card bar is separated from the first slot;
b ) 最终状态： 所述限位杠位于所述限位槽外， 且所述卡位杠卡 接于所述第一缺口内。  b) final state: the limiting bar is located outside the limiting slot, and the card bar is engaged in the first notch.
更进一步地，所述浮动块的上表面分别设有与所述限位块相匹配 的第四缺口， 所述限位块分别设置于所述第四缺口内。  Further, the upper surface of the floating block is respectively provided with a fourth gap matching the limiting block, and the limiting block is respectively disposed in the fourth notch.
更进一步地，所述钉仓的两侧壁上分别设有一纵向分布的腰形槽; 所述第二压块的限位杠的两端设有可在所述腰形槽内纵向移动的第 三凸起。  Further, a longitudinally distributed waist groove is respectively disposed on each of the two side walls of the staple cartridge; and two ends of the limiting bar of the second pressing block are longitudinally movable in the waist groove Three raised.
更进一步地， 所述限位槽的槽口处设有一圆弧形的第二凸起， 所 述限位杠的上表面为凸轮面。  Further, a second arc-shaped protrusion is disposed at the slot of the limiting slot, and an upper surface of the limiting lever is a cam surface.
本发明的有益效果主要体现在：  The beneficial effects of the present invention are mainly embodied in:
( 1 )结构简单，加工方便， 且安全可靠， 具有很好的推广价值； (1) The structure is simple, the processing is convenient, and it is safe and reliable, and has good promotion value;
( 2 ) 第一压块的形状及构造和钉仓的内部结构相符合， 且第一 压块在钉仓内进行纵向移动时稳定性较高； (3 ) 弹性件及第一压块的安装方便； (2) The shape and structure of the first pressure block are consistent with the internal structure of the staple cartridge, and the stability of the first pressure block during longitudinal movement in the staple cartridge is high; (3) The elastic member and the first pressure block are conveniently installed;
(4 ) 弹片的结构简单， 成本较低， 且性能较好；  (4) The structure of the shrapnel is simple, the cost is low, and the performance is good;
(5 ) 第二压块的结构简单， 且切刀的推出可使其触发整个保险 机构， 使得操作非常方便；  (5) The structure of the second pressure block is simple, and the introduction of the cutter can trigger the entire insurance mechanism, which makes the operation very convenient;
(6 ) 第二压块和第一压块之间的连接较为稳定；  (6) the connection between the second pressure block and the first pressure block is relatively stable;
( 7 ) 第二压块纵向移动时的稳定性较高；  (7) The stability of the second compact is relatively high when moving longitudinally;
(8 ) 限位槽上的第二凸起具有限位作用， 使得产品的安全性提 ι¾。  (8) The second protrusion on the limit groove has a limit function, which makes the safety of the product clear.
附图说明  DRAWINGS
图 1是实例中的直线型切割缝合器的爆炸图；  Figure 1 is an exploded view of the linear cutting stapler in the example;
图 2是初始状态下的直线型切割缝合器的俯视图；  Figure 2 is a plan view of the linear cutting stapler in an initial state;
图 3是图 2中沿 A-A的剖视图；  Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
图 4是图 2中沿 B-B的剖视图；  Figure 4 is a cross-sectional view taken along line B-B of Figure 2;
图 5是图 2中沿 C-C的剖视图；  Figure 5 is a cross-sectional view taken along line C-C of Figure 2;
图 6是切刀推出时的直线型切割缝合器的剖视图；  Figure 6 is a cross-sectional view of the linear cutting stapler when the cutter is pushed out;
图 7是切刀拉回时的直线型切割缝合器的剖视图；  Figure 7 is a cross-sectional view of the linear cutting stapler when the cutter is pulled back;
图 8是最终状态下的直线型切割缝合器的剖视图。 具体实½ ^式  Figure 8 is a cross-sectional view of the linear cutting stapler in a final state. Specific actual 1⁄2 ^
如图 1-8所示， 本发明中的一种直线型切割缝合器， 包括： 可相 互闭合或打开的上、 下钳夹 （未图示）， 所述下钳夹的远端设有钉仓 1， 钉仓 1上轴向设有走刀槽 13， 所述下钳夹为 U形， 其内可滑动地 设有推钉杆和推刀杆 （未图示）， 所述推刀杆的远端设有切刀 2， 钉 仓 1的近端设有一保险机构，所述保险机构包括设置于钉仓 1内的第 一压块 4、 触发机构及至少一弹性件， 切刀 2的底端设有一第一缺口 22，第一压块 4在所述弹性件及触发机构的作用下可在钉仓 1内进行 纵向移动， 从而使得第一压块 4和第一缺口 22可选择性地卡接或分 下面通过具体实施例进一步介绍本发明的具体实施方式。 As shown in FIG. 1-8, a linear cutting stapler according to the present invention comprises: upper and lower jaws (not shown) which can be closed or opened to each other, and the distal end of the lower jaw is provided with a nail. The cartridge 1 has a knife groove 13 axially disposed therein, and the lower jaw is U-shaped, and a pusher bar and a pusher bar (not shown) are slidably disposed therein, and the pusher bar is The distal end is provided with a cutter 2, and the proximal end of the staple cartridge 1 is provided with a safety mechanism, and the safety mechanism comprises a first pressure block 4 disposed in the staple cartridge 1, a trigger mechanism and at least one elastic member, and the cutter 2 The bottom end is provided with a first notch 22, and the first pressing block 4 can be longitudinally moved in the staple cartridge 1 by the elastic member and the triggering mechanism, so that the first pressing block 4 and the first notch 22 are selectively Ground card or sub-card Specific embodiments of the present invention are further described below by way of specific examples.
如图 1所示， 本实施例中的直线型切割缝合器， 包括： 可相互闭 合或打开的上、 下钳夹 （未图示）， 所述下钳夹的远端设有钉仓 1， 钉仓 1上轴向设有走刀槽 13， 所述下钳夹为 U形， 其内可滑动地设 有推钉杆和推刀杆 （未图示）， 所述推刀杆的远端设有切刀 2， 且切 刀 2的底端设有一第一缺口 22，其顶端轴向设有一条形的限位槽 21， 限位槽 21的槽口处设有一圆弧形的第二凸起 24， 切刀 2的底部的近 端为圆弧形的斜面 23， 钉仓 1 的近端设有一保险机构， 所述保险机 构包括设置于钉仓 1内的第二压块 3、 第一压块 4及两个弹片 5。  As shown in FIG. 1 , the linear cutting stapler in this embodiment includes: upper and lower jaws (not shown) that can be closed or opened to each other, and a staple cartridge 1 is disposed at a distal end of the lower jaw. The nail cartridge 1 is provided with a knife groove 13 in the axial direction, and the lower jaw is U-shaped, and a pusher bar and a pusher bar (not shown) are slidably disposed therein, and the distal end of the pusher bar The cutter 2 is provided with a first notch 22 at the bottom end of the cutter 2, and a strip-shaped limiting groove 21 is arranged at the top end thereof, and a circular arc-shaped second portion is arranged at the notch of the limiting groove 21. The protrusion 24, the proximal end of the bottom of the cutter 2 is a circular arc-shaped inclined surface 23, the proximal end of the staple cartridge 1 is provided with a safety mechanism, and the insurance mechanism comprises a second pressure piece 3 disposed in the staple cartridge 1 A pressure block 4 and two elastic pieces 5.
钉仓 1的近端轴向设有两形状相同的凹槽 11， 凹槽 11对称地设 置于走刀槽 13的两侧， 且凹槽 11的内侧均设有一第二缺口 12， 从 而使得凹槽 13均联通于走刀槽 13; 钉仓 1的两侧壁上分别设有一纵 向分布的腰形槽 14; 第一压块 3为凹型， 其结构与两凹槽 11所形成 的内部容置空间相对应， 第一压块 4包括与第一缺口 22的形状相对 应的卡位杠 41， 及设置于卡位杠 41两端、 并与凹槽 13相配合的浮 动块 43， 浮动块 43的上表面均设有矩形的第四缺口 44， 卡位杠 41 和浮动块 43相配合， 中间部分形成供切刀 2通行的第三缺口 42， 且 卡位杠 41与切刀 2相接触的一面为与斜面 23相对应的楔形面；第二 压块 3包括与限位槽 21相配合的矩形的限位杠 31， 及设置于限位杠 31两端、 并分别与浮动块 43相匹配的限位块 32， 且限位杠 31的上 表面为凸轮面， 使得其能够很容易的与切刀 2分离， 第二压块 3的两 端分别设有可在腰形槽 14内移动的第三凸起 33。  The proximal end of the staple cartridge 1 is axially provided with two grooves 11 of the same shape. The grooves 11 are symmetrically disposed on both sides of the knife groove 13 , and a concave groove 12 is defined on the inner side of the groove 11 so as to be concave. The grooves 13 are respectively connected to the cutter groove 13; the two side walls of the staple cartridge 1 are respectively provided with a longitudinally distributed waist groove 14; the first pressure block 3 is concave, and the structure and the internal accommodation formed by the two grooves 11 are formed. Corresponding to the space, the first pressing block 4 includes a locking bar 41 corresponding to the shape of the first notch 22, and a floating block 43 disposed at the two ends of the locking bar 41 and engaging with the groove 13, the floating block 43 The upper surface is provided with a rectangular fourth notch 44. The locking bar 41 and the floating block 43 are matched, and the middle portion forms a third notch 42 for the cutter 2 to pass, and the locking bar 41 is in contact with the cutter 2. One side is a wedge-shaped surface corresponding to the inclined surface 23; the second pressing block 3 includes a rectangular limiting rod 31 that cooperates with the limiting groove 21, and is disposed at both ends of the limiting rod 31 and respectively matched with the floating block 43 The limit block 32, and the upper surface of the limit bar 31 is a cam surface, which makes it easy Separated from the cutter 2, the two ends of the second press block 3 are respectively provided with third projections 33 which are movable in the waist groove 14.
两个弹片 5分别设置于对应的凹槽 11内， 弹片 5的一端设有一 圆形孔， 凹槽 11的底面上设有与圆形孔相对应的圆柱形突起， 弹片 5通过圆形孔连接于所述圆柱形突起上， 当然， 弹片 5亦可通过其它 常规手段连接于凹槽 11的底面， 如： 焊接、 螺纹连接或者铆接等。 第一压块 4置于两凹槽 11形成的容置空间内，两浮动块 43分别置于 对应的凹槽 11内，卡位杠 41位于第二缺口 12及走刀槽 13形成的空 间内。 第二压块 3置于第一压块 4的上方， 限位块 32分别置于对应 的第四缺口 44内， 限位杠 31可选择性地置于切刀 2上的限位槽 21 内， 限位杆 31的上表面为凸轮面， 可以使其与限位槽配合及脱离更 容易。第二压块 3可在钉仓 1内进行纵向移动， 从而使得所述直线型 切割缝合器可选择性地处于两种状态： The two elastic pieces 5 are respectively disposed in the corresponding grooves 11. The elastic piece 5 is provided with a circular hole at one end thereof, and the bottom surface of the groove 11 is provided with a cylindrical protrusion corresponding to the circular hole, and the elastic piece 5 is connected through the circular hole. On the cylindrical protrusion, of course, the elastic piece 5 can also pass other Conventional means are attached to the bottom surface of the recess 11, such as: welding, screwing or riveting. The first pressing block 4 is disposed in the accommodating space formed by the two recesses 11. The two floating blocks 43 are respectively disposed in the corresponding recesses 11. The latching bars 41 are located in the space formed by the second notch 12 and the slot 13 . The second pressing block 3 is placed above the first pressing block 4, and the limiting block 32 is respectively placed in the corresponding fourth notch 44. The limiting bar 31 can be selectively placed in the limiting slot 21 on the cutter 2. The upper surface of the limiting rod 31 is a cam surface, which makes it easier to fit and disengage the limiting groove. The second pressure block 3 is longitudinally movable within the staple cartridge 1 such that the linear cutting stapler is selectively in two states:
a) 如图 2-5所示的初始状态： 限位杠 31位于限位槽 21内， 第 二压块 3向下挤压第一压块 4， 使其纵向向下移动， 从而使得卡位杠 41与第一缺口 22相分离， 所述直线型切割缝合器处于初始可击发状 态；  a) The initial state shown in FIG. 2-5: the limiting bar 31 is located in the limiting slot 21, and the second pressing block 3 presses the first pressing block 4 downward to move it downwards longitudinally, thereby making the card position The bar 41 is separated from the first notch 22, and the linear cutting stapler is in an initial fired state;
b ) 如图 8所示的最终状态： 限位杠 31位于限位槽 21外， 第一 压块 4纵向向上移动， 从而使得卡位杠 41卡接于第一缺口 22内， 所 述直线型切割缝合器处于最终保险状态。  b) the final state as shown in FIG. 8 : the limiting bar 31 is located outside the limiting slot 21 , and the first pressing block 4 is moved longitudinally upwards, so that the locking lever 41 is engaged in the first notch 22 , the straight type The cutting stapler is in a final insurance state.
下面简单地介绍一下本实施例中的直线型切割缝合器的工作原 理。  The working principle of the linear cutting stapler in this embodiment will be briefly described below.
首先，第二压块 3的限位杠 31与切刀 2的限位槽处于配合状态， 当切刀受到向前推力时， 由于限位杠上表面为凸轮面， 切刀很容易可 以脱离第二压块的限制， 向前移动切割组织。 如图 6所示， 将切刀 2 按 A方向向钉仓 2的远端推出， 切刀 2上的第二凸起 24迫使限位杠 31向下运动， 使限位槽 21和限位杠 31相脱离， 此时， 限位杠 31不 受到切刀 2纵向向下的压力， 弹片 5作用于浮动块 43的下表面， 从 而使得第一压块 4和第二压块 3纵向向上移动， 即卡位杠 41的位置 也向上相应移动；  First, the limiting bar 31 of the second pressing block 3 is in a mating state with the limiting slot of the cutter 2. When the cutting blade receives the forward thrust, since the upper surface of the limiting bar is a cam surface, the cutter can easily be separated from the first The restriction of the two pressure blocks moves forward to cut the tissue. As shown in FIG. 6, the cutter 2 is pushed out toward the distal end of the staple cartridge 2 in the A direction, and the second projection 24 on the cutter 2 forces the limit lever 31 to move downward, so that the limit groove 21 and the limit bar The phase 31 is disengaged. At this time, the limit bar 31 is not subjected to the longitudinal downward pressure of the cutter 2, and the elastic piece 5 acts on the lower surface of the slider 43, so that the first press block 4 and the second press block 3 move longitudinally upward. That is, the position of the card position bar 41 also moves upwards accordingly;
然后， 如图 7所示， 当完成了切割及缝合操作以后， 切刀 2按 B 方向向钉仓 2的近端移动，切刀 2的斜面 23首先与卡位杠 41的楔形 面接触， 卡位杠 41受到挤压纵向向下移动， 紧接着切刀 2上的第一 缺口 22移动到卡位杠 41处， 此时， 卡位杠 41在弹片 5的作用下卡 接于第一缺口 22内， 处于如图 8所示的最终保险状， 由于此时第二 压块 3没有受到外力作用， 因此限位杠 31处于限位槽 21的外面， 切 刀 2此时即使受到推力， 也无法脱离卡位杠 41的限制， 不能再次进 行击发， 起到防止被二次击发的作用。 Then, as shown in Figure 7, after the cutting and stitching operations are completed, the cutter 2 presses B. The direction moves toward the proximal end of the staple cartridge 2, and the inclined surface 23 of the cutter 2 first comes into contact with the wedge-shaped surface of the card post 41, and the latching lever 41 is longitudinally moved downward by the pressing, followed by the first notch 22 on the cutter 2. Move to the card position bar 41. At this time, the card position bar 41 is engaged in the first notch 22 by the elastic piece 5, and is in the final insurance shape as shown in FIG. Because the external force acts, the limit bar 31 is outside the limit groove 21, and the cutter 2 cannot be separated from the restriction of the card bar 41 even if it is subjected to the thrust at this time, and can not be fired again, thereby preventing the second shot. .
本实施例中， 弹片 5亦可由弹簧或其它弹性部件取代； 优选地， 浮动块 43的下表面所在的平面纵向上高于卡位杠 41的上表面所在的 平面， 从而使得浮动块 43和卡位杠 41之间形成一台阶， 此时， 两个 凹槽 11的深度可以设置的较浅， 从而使得弹片 5的安装更为方便。  In this embodiment, the elastic piece 5 may also be replaced by a spring or other elastic member; preferably, the lower surface of the floating block 43 is located longitudinally higher than the plane of the upper surface of the card post 41, so that the slider 43 and the card A step is formed between the bars 41. At this time, the depths of the two grooves 11 can be set shallow, so that the mounting of the elastic piece 5 is more convenient.
本实施例的有益效果有：（1 )结构简单，加工方便，且安全可靠， 具有很好的推广价值； （2 )第一压块 4的形状及构造和钉仓 1的内部 结构相符合， 且第一压块 4在钉仓 1内进行纵向移动时稳定性较高； ( 3 ) 弹片 5及第一压块 4的安装方便； （4) 弹片 5的结构简单， 成 本较低， 且性能较好； （5 )第二压块 3的结构简单， 且切刀 2的推出 可使其触发整个保险机构， 使得操作非常方便； （6 )第二压块 3和第 一压块 4之间的连接较为稳定； （7 )第二压块 3纵向移动时的稳定性 较高； （8 ) 限位槽 21上的第二凸起 24具有限位作用， 使得产品的安 全性提高。  The beneficial effects of the embodiment are as follows: (1) the structure is simple, the processing is convenient, and the method is safe and reliable, and has good popularization value; (2) the shape and structure of the first pressure block 4 are consistent with the internal structure of the staple cartridge 1, Moreover, the first compact 4 has high stability when moving longitudinally in the staple cartridge 1; (3) the elastic piece 5 and the first compact 4 are conveniently installed; (4) the elastic piece 5 has a simple structure, low cost, and performance. Preferably, (5) the structure of the second pressing block 3 is simple, and the pushing out of the cutter 2 can cause the entire securing mechanism to be triggered, so that the operation is very convenient; (6) between the second pressing block 3 and the first pressing block 4 The connection is relatively stable; (7) the stability of the second pressing block 3 in the longitudinal movement is high; (8) the second protrusion 24 on the limiting groove 21 has a limiting function, so that the safety of the product is improved.
本发明尚有多种实施方式， 例如： 第一压块 4的两侧均设置有突 出的拨杆（未图示）， 所述拨杆置于钉仓 1的两侧的腰形槽 14内， 其 余结构同上述实施例相同， 此时， 可通过手动纵向向下波动所述拨动 杆， 使得所述直线型切割缝合器处于击发状态。  There are various embodiments of the present invention. For example, the first pressure block 4 is provided with protruding levers (not shown) on both sides thereof, and the levers are placed in the waist grooves 14 on both sides of the staple cartridge 1. The remaining structure is the same as that of the above embodiment. At this time, the toggle lever can be vertically downwardly moved by the manual direction so that the linear cutting stapler is in a fired state.
凡采用等同变换或者等效变换而形成的所有技术方案，均落在本 发明的保护范围之内。  All technical solutions formed by equivalent transformation or equivalent transformation are within the scope of the present invention.

Claims

权利要求书 Claim
1. 一种直线型切割缝合器， 包括： 可相互闭合或打开的上、 下 钳夹， 所述下钳夹的远端设有钉仓 （1)， 所述钉仓 （1) 上轴向设有 走刀槽 （13)， 所述下钳夹为 U形， 其内可滑动地设有推钉杆和推刀 杆， 所述推刀杆的远端设有切刀 （2)， 其特征在于： 所述钉仓 （1) 的近端设有一保险机构， 所述保险机构包括设置于所述钉仓 （1) 内 的第一压块 （4)、 触发机构及至少一弹性件， 所述切刀 （2) 的底端 设有一第一缺口 （22)， 所述第一压块（4)在所述弹性件及触发机构 的作用下可在所述钉仓 （1) 内进行纵向移动， 从而使得所述第一压 块 （4) 和第一缺口 （22) 可选择性地卡接或分离。 A linear cutting stapler comprising: upper and lower jaws that can be closed or opened to each other, a distal end of the lower jaw is provided with a staple cartridge (1), and the staple cartridge (1) is axially a cutter groove (13) is provided, the lower jaw is U-shaped, and a pusher bar and a pusher bar are slidably disposed therein, and a cutter (2) is disposed at a distal end of the pusher bar, The utility model is characterized in that: a proximal end of the staple cartridge (1) is provided with a safety mechanism, and the insurance mechanism comprises a first pressing block (4) disposed in the staple cartridge (1), a triggering mechanism and at least one elastic member. The bottom end of the cutter (2) is provided with a first notch (22), and the first pressing block (4) can be carried in the staple cartridge (1) by the elastic member and the trigger mechanism. The longitudinal movement is such that the first pressure block (4) and the first gap (22) are selectively snapped or separated.
2. 根据权利要求 1所述的直线型切割缝合器， 其特征在于： 所 述第一压块（4)包括一与所述第一缺口（22)相配合的卡位杠（41)， 所述卡位杠（41 )在所述弹性件及触发机构的作用下可在所述钉仓（ 1 ) 内进行纵向移动， 从而使得所述卡位杠 （41)和第一缺口 （22)可选 择性地卡接或分离。 2. The linear cutting stapler according to claim 1, wherein: the first pressing block (4) comprises a locking lever (41) that cooperates with the first notch (22). The card position bar (41) can be longitudinally moved in the staple cartridge (1) by the elastic member and the trigger mechanism, so that the card position bar (41) and the first notch (22) can be Selectively snap or separate.
3. 根据权利要求 2所述的直线型切割缝合器， 其特征在于： 所 述钉仓（1) 的近端轴向设有两凹槽（11)， 所述凹槽（11)对称地设 置于所述走刀槽（13) 的两侧， 且所述凹槽（11) 的内侧均设有一第 二缺口 （12)， 从而使得所述凹槽 （11) 均联通于所述走刀槽 （13); 所述第一压块（4)为凹型， 其还包括设置于所述卡位杠（41)两端、 并与所述凹槽 （11) 相配合的浮动块 （43)， 所述卡位杠 （41) 和浮 动块（43)相配合形成供切刀通行的第三缺口（42);所述浮动块（43) 分别设置于所述凹槽 （11) 内。 3. The linear cutting stapler according to claim 2, wherein: the proximal end of the staple cartridge (1) is axially provided with two grooves (11), and the grooves (11) are symmetrically arranged A second notch (12) is disposed on the inner side of the groove (11), so that the groove (11) is connected to the groove. (13); the first pressure block (4) is concave, and further includes a floating block (43) disposed at two ends of the card position bar (41) and matched with the groove (11), The latching bar (41) and the slider (43) cooperate to form a third notch (42) for the cutter to pass; the sliders (43) are respectively disposed in the recess (11).
4. 根据权利要求 3所述的直线型切割缝合器， 其特征在于： 所 述直线型切割缝合器设有两个连接于所述凹槽 （11) 底部的弹性件， 所述弹性件作用于所述浮动块（43)的下表面，使得所述浮动块（43) 可进行纵向移动， 进而带动所述卡位杠 （41) 进行纵向移动。 4. The linear cutting stapler according to claim 3, wherein: The linear cutting stapler is provided with two elastic members connected to the bottom of the groove (11), and the elastic member acts on the lower surface of the floating block (43), so that the floating block (43) can be The longitudinal movement is performed to drive the card position bar (41) to move longitudinally.
5. 根据权利要求 4所述的直线型切割缝合器， 其特征在于： 所 述弹性件为弹片 （5)， 且所述弹片 （5) 的一端固定连接在所述凹槽The linear cutting stapler according to claim 4, wherein: the elastic member is a elastic piece (5), and one end of the elastic piece (5) is fixedly coupled to the groove
(11) 的底面上。 On the bottom surface of (11).
6. 根据权利要求 5所述的直线型切割缝合器， 其特征在于： 所 述触发机构为 H型的第二压块 （3)， 所述第二压块 （3) 包括限位杠The linear cutting stapler according to claim 5, wherein: the trigger mechanism is an H-shaped second pressing block (3), and the second pressing block (3) includes a limiting bar.
(31)， 及设置于所述限位杠（31)两端、并分别与所述浮动块（43) 相匹配的限位块（ 32 )；所述切刀（ 2 )的顶端轴向设有一限位槽（21); 所述第二压块（3)可在所述钉仓（1) 内进行纵向移动， 使得所述直 线型切割缝合器可选择性地处于两种状态： (31), and a limiting block (32) disposed at each end of the limiting bar (31) and matched with the floating block (43); the top end of the cutter (2) is axially disposed There is a limiting slot (21); the second pressing block (3) is longitudinally movable within the staple cartridge (1) such that the linear cutting stapler is selectively in two states:
a) 初始状态： 所述限位杠 （31) 位于所述限位槽 （21) 内， 且 所述卡位杠 （41) 与所述第一缺口 （22) 相分离；  a) initial state: the limiting bar (31) is located in the limiting slot (21), and the clamping bar (41) is separated from the first notch (22);
b) 最终状态： 所述限位杠 （31) 位于所述限位槽 （21) 外， 且 所述卡位杠 （41) 卡接于所述第一缺口 （22) 内。  b) Final state: The limiting bar (31) is located outside the limiting slot (21), and the locking bar (41) is engaged in the first notch (22).
7. 根据权利要求 6所述的直线型切割缝合器， 其特征在于： 所 述浮动块（43) 的上表面分别设有与所述限位块（32)相匹配的第四 缺口 （44)， 所述限位块 （32) 分别设置于所述第四缺口 （44) 内。 The linear cutting stapler according to claim 6, wherein: the upper surface of the floating block (43) is respectively provided with a fourth notch (44) matching the limiting block (32) The limiting blocks (32) are respectively disposed in the fourth notch (44).
8. 根据权利要求 7所述的直线型切割缝合器， 其特征在于： 所 述钉仓（1) 的两侧壁上分别设有一纵向分布的腰形槽（14); 所述第 二压块 （3) 的限位杠 （31) 的两端设有可在所述腰形槽 （14) 内纵 向移动的第三凸起 （33)。 The linear cutting stapler according to claim 7, wherein: the two side walls of the staple cartridge (1) are respectively provided with a longitudinally distributed waist groove (14); the second pressure block The third end of the limit bar (31) is provided with a third projection (33) longitudinally movable in the waist groove (14).
9. 根据权利要求 8所述的直线型切割缝合器， 其特征在于： 所 述限位槽 （21) 的槽口处设有一圆弧形的第二凸起 （24)。 The linear cutting stapler according to claim 8, characterized in that: the notch of the limiting groove (21) is provided with a circular arc-shaped second protrusion (24).
10. 根据权利要求 9所述的直线型切割缝合器， 其特征在于: 述限位杠 （31 ) 的上表面为凸轮面。 The linear cutting stapler according to claim 9, wherein the upper surface of the limit bar (31) is a cam surface.
PCT/CN2012/071595 2011-04-20 2012-02-24 Straight cutting and stitching device WO2012142872A1 (en)

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