WO2017028037A1 - 软组织夹 - Google Patents

软组织夹 Download PDF

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Publication number
WO2017028037A1
WO2017028037A1 PCT/CN2015/087052 CN2015087052W WO2017028037A1 WO 2017028037 A1 WO2017028037 A1 WO 2017028037A1 CN 2015087052 W CN2015087052 W CN 2015087052W WO 2017028037 A1 WO2017028037 A1 WO 2017028037A1
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WO
WIPO (PCT)
Prior art keywords
clip
stop member
pair
clips
spring hose
Prior art date
Application number
PCT/CN2015/087052
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English (en)
French (fr)
Inventor
张婵娟
Original Assignee
杭州安杰思医学科技有限公司
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 杭州安杰思医学科技有限公司 filed Critical 杭州安杰思医学科技有限公司
Priority to PCT/CN2015/087052 priority Critical patent/WO2017028037A1/zh
Priority to CN201580050113.5A priority patent/CN107072668B/zh
Publication of WO2017028037A1 publication Critical patent/WO2017028037A1/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
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/122—Clamps or clips, e.g. for the umbilical cord

Definitions

  • the invention belongs to the field of medical instruments, in particular to a soft tissue clip for use with an endoscope.
  • Gastrointestinal bleeding is a common and serious condition, and if left untreated, the consequences are often fatal. This problem has prompted the development of a variety of endoscopic treatments to achieve hemostasis, such as injection hardeners and contact thermocoagulation techniques. Although these methods are effective, many patients continue to bleed, so a highly effective and invasive device is needed.
  • CN201410222753.7 discloses a hemostatic clip comprising a clamping assembly and a clamping seat, the clamping assembly comprising a clip body and a wire buckle connected in sequence; the front end of the clamping seat is provided with a fixing pin
  • the shaft body is composed of two clamping arms, the tail ends of the two clamping arms are connected by a movable pin shaft, and the two clamping arms are respectively provided with a sliding groove in the middle thereof, the fixing pin shaft passes through the sliding groove, and two
  • the clamping arm reciprocates along the sliding slot to form an opening and closing of the clip body; the end of the sliding slot is provided with a bending structure, and when the clamping arm moves so that the fixing pin is located in the bending structure, the two clamping arms are in the locked closed position .
  • the distal ends of the two gripping arms are serrated, which does not allow the clip to grip the tissue securely.
  • hemostatic clip devices There are also many hemostatic clip devices on the market.
  • One common problem with these conventional hemostasis devices is that many devices are not strong enough to produce permanent hemostasis.
  • conventional clips when attempting to close a perforation in a stomach or gastrointestinal structure with a clip, conventional clips suffer from problems of difficulty in placement and limited amount of grasping tissue, which may result in incomplete closure.
  • a soft tissue clip of the present invention includes a clip, a conveying member and an operating member,
  • the clip includes a pair of clips and a stop member for receiving the clips therein, the pair of clips passing The respective bottom ends are joined to form a clip connection portion, and when the pair of clips completely receive the stop member, the side edges of the pair of clips are in frictional contact with the cavity wall of the stop member so that The head end of the clip is fully closed, and the pair of clips and the stop member are locked by the engaging mechanism;
  • the conveying member comprises a spring hose, a pulling wire and a releasing member, the pulling wire is inserted through the inner cavity of the spring hose;
  • the releasing member comprises two pulling arms, and the front ends of the two pulling arms are respectively provided a hook portion, the two pull arms are connected to the clip connecting portion through hook portions of the respective front ends, the rear ends of the two pull arms are respectively fixedly connected with the front end of the pull wire;
  • the clip passes The release member and the traction wire can receive and extend the front end of the spring hose, and when the clip is released, the hook portion of the pull arm is deformed by the pulling wire to be disengaged from the clip connecting portion;
  • the operating member is coupled to a spring hose of the conveying member and a rear end of the pull wire, and the clip is operated by driving the conveying member.
  • the engaging mechanism includes a card slot structure provided on each of the clips and a concave protrusion provided on the stop member, when the pair of clips completely receive the stop position After the piece, the card slot structure of the clip firmly locks the protrusion of the stop member.
  • the engaging mechanism includes a barb structure provided on the pair of clips and a stepped hole provided in the stop member, and when the pair of clips completely collect the stop member, The barb structure of the clip is firmly stuck into the stepped hole of the stop member.
  • the bottom ends of the pair of clips are respectively provided with connection holes, and the pin tube penetrates the connection holes of the pair of clips to form the clip connection portion, and the hook portion of the pull arm is connected to the Speak on the pin tube.
  • the stop member has an inner cavity and a wing portion for receiving the clip, and when the stop member is located in the spring hose, the wing portion is contracted in the inner cavity of the stop member, The wing is flared and snaps over the end face of the front end of the spring hose when the stop extends beyond the front end of the spring hose.
  • a middle portion of the pull arm is provided with a step, and when the stop member is in the spring hose, a wing portion of the stop member is caught at the step to prevent the pull arm from being The inner cavity of the stop moves rearward.
  • the operating member includes a main body, an operating rod penetrating the main body, an operating block sleeved on the main body and fixedly connected to the operating rod, and an operating handle fixed to the rear end of the main body,
  • the operating block is slidably sleeved on the main body, and the rear end of the spring hose is fixedly connected to The front end of the main body of the operating member is connected to the front end of the operating rod.
  • the head end of the clip is fully closed by the frictional contact between the side edges of the pair of clips and the cavity wall of the stop member, and the pair of clips and the stop member are mutually
  • the locking engagement mechanism allows the clip to be released well during use and can grip the tissue securely, and the clip can be closed well enough for the tissue to grow sufficiently heal.
  • Figure 1 is a schematic view showing the overall structure of a soft tissue clip of the present invention
  • FIG. 2 is a schematic structural view of a clip according to a first embodiment of the present invention
  • Figure 3 is a schematic view showing the clip housed in a spring hose in the first embodiment of the present invention
  • Figure 4 is a schematic view of the first embodiment of the present invention after the clip is pushed out of the end surface of the spring hose;
  • Figure 5 is a schematic view of the clip in the first embodiment of the present invention after the clip is clamped;
  • Figure 6 is a schematic cross-sectional view of the clip of the first embodiment of the present invention (in a direction perpendicular to the wing of the stop member);
  • Fig. 7 is a schematic view showing a connection relationship between a clip and a conveying member according to the first embodiment of the present invention.
  • Figure 8 is a schematic view of a pull arm of a first embodiment of the present invention.
  • Figure 9 is a schematic view of the first embodiment of the present invention after the deformation of the pull arm is released;
  • Figure 10 is a schematic view showing the axial cross section (in a direction perpendicular to the wing of the stop member) after the clip is released according to the first embodiment of the present invention
  • FIG 11 is a schematic view of the clip taken along line A-A of Figure 10;
  • Figure 12 is a schematic view of a clip of a clip according to a second embodiment of the present invention.
  • Figure 13 is a schematic view showing the axial cross section (in a direction perpendicular to the wing of the stopper) after the clip is released in the second embodiment of the present invention.
  • the soft tissue clip includes a clip 40, a transport member 30, and an operating member 10.
  • the clip includes a pair of clips 401/402 and a stop member 404 that receives the clip therein, the pair of clips 401/402 and the stop member being locked by the snap mechanism.
  • the clips 401 / 402 are joined by respective bottom ends to form a clip connection portion.
  • the side edges of the clips 401 / 402 are in frictional contact with the cavity wall of the stop member 404 .
  • a positive pressure is applied to the head end of the clip 401/402 such that the head end of the clip 401/402 is sufficiently closed and the clip 401/402 and the stop 404 are locked by the snap mechanism.
  • the delivery member includes a spring hose (not shown), a pull wire 302 and a release member 20 through which the pull wire 302 extends;
  • the release member 20 includes two pull arms 204 and 205, and the front ends of the pull arms 204/205 are respectively provided with hook portions, and the pull arms 204/205 are connected to the clip connection portions through the hook portions of the respective front ends, and the pull arms 204/205
  • the rear end is fixedly connected to the front end of the pull wire 302, respectively, and the clip 40 can receive and extend the front end of the spring hose through the release member 20 and the pull wire 302.
  • the clip 40 is released, the hook portion of the pull arm 204/205 is pulled.
  • the wire 302 is deformed to be disengaged from the clip connection portion.
  • the operating member 10 is coupled to the spring hose of the transport member 30 and the rear end of the pull wire 302, and the clip 40 is operated by driving the transport member 30.
  • the operating member 10 can be a common structure in the art, and only one implementation of the operating member is exemplified herein.
  • the operating member 10 may include a main body 101, an operating lever 102 penetrating the inside of the main body 101, an operating block 103 fixedly coupled to the operating lever 102 to control the movement of the operating lever, and an operating handle 104 fixed to the rear end of the main body, and the operating block 103 is sleeved
  • the front end of the spring hose is fixedly connected to the front end of the main body 101 of the operating member, and the rear end of the pulling wire 302 is connected with the front end of the operating rod 102 so as to be able to drive the pulling arm 204 under the action of the operating block. / 205 and further drive the clip 401 / 402 action.
  • the engaging mechanism includes a card slot structure 401a/402a disposed on the clip 401/402 and on the stop member.
  • the recessed protrusion 404c is provided.
  • the bottom ends of the clips 401/402 are respectively provided with connection holes, and the pin tube 403 penetrates the connection hole of the clip to form a clip connection portion, and the hook portion of the pull arm 204/205 is connected. Yu (suspended) The pin tube 403 is on.
  • the stop member 404 can extend and retract from the distal end of the spring hose. As shown in FIG. 7, the stop member 404 has a lumen and a wing portion 404a/404b that can receive the clip 401/402, when the stop member 404 The wings 404a/404b are retracted into the inner cavity of the stop member 404 when in the spring hose, and when the stop member 404 extends beyond the front end of the spring hose, the wings 404a/404b are opened and snapped onto the spring hose At the end of the front end.
  • the pull arm 204/205 is composed of a head end 204a/205a, a middle section 204b/205b, and a tail end 204c/205c, and the pull arm head end 204a/205a is a non-closed hook structure, and the hook is
  • the clips 401 / 402 are clearance fit by the pin tube 403.
  • the middle section 204b/205b of the pull arm cooperates with the wings 404a/404b of the stop member.
  • the wing contraction compresses and fixes the middle section 204b/205b of the pull arm when the stop member 404 At the outer end face of the spring hose, the wings 404a/404b expand and the pull arms 204/205 can advance and retreat within the interior of the stop member 404.
  • the trailing end 204c/205c of the pull arm is fixedly coupled to the pull wire 302.
  • the operation steps of the soft tissue clip of the present invention include: the clip receives the spring hose, the clip extends out of the spring hose to grasp the tissue, the clip clamps the tissue, and the clip is released.
  • the clip is received into the spring hose through a guiding device (not shown), and the pulling wire 302 is pushed forward to extend the clip out of the spring hose.
  • the wing of the stopping member 404 is elastically expanded and pulled backward.
  • the wire 302 is such that the wing portion abuts against the end surface of the spring hose.
  • the clip 401/402 is pressed against the tissue, and the pulling wire 302 is continuously pulled to drive the pulling arm 204/205 to move, so that the clip 401/402 grasps the tissue.
  • the clip 401/402 is received in the stop member 404.
  • the pull wire 302 is pulled again, the head hook of the pull arm 204/205 is deformed, and the clip is released from the pull arm 204/205, and the release is successful.
  • the edge of the clip 401/402 is in frictional contact with the cavity wall of the stop member 404, and the head end of the clip is closed to form a positive pressure.
  • the clamping arm of the clip 401/402 has a structure of a card slot 401a/402a, which forms a lock with the stop bump 404c.
  • the wing portion contracts into the inner cavity of the stop member, preventing the release mechanism from moving rearwardly in the inner cavity of the stop member 404, when the stop member 404 extends out of the spring hose
  • the release mechanism can be moved backward through the inner cavity of the stop member 404, and the clip 401/402 can be received into the inner cavity of the stop member 404.
  • the pull arm 204/205 or other connecting member may be provided with a step at a certain intermediate portion (for example, the pull arms 204a/205a and 204b/205b), and when the stop member 404 is in the spring hose, the stop member 404 The wings can be stuck at the steps to prevent pulling The arms 204/205 move rearwardly within the interior of the stop member 404.
  • the side edge of the clip is in frictional contact with the cavity wall of the stop member, and the front end of the clip is clamped to form a positive pressure closure, and at the same time, the card slot structure on the clamp arm of the clip is formed.
  • the locking protrusion of the stop member forms a lock, so that the clip is locked for a long time until the tissue is completely closed and closed, and the tissue is detached together, and the hemostasis is safer.
  • the stopper 404 has a stepped hole 414, and the clip 401/402 is provided.
  • the barb structure 411 / 412 after the clip 401 / 402 fully receives the stop 404, continues to pull the clip 40, the barb structure 411 / 412 of the clip 401 / 402 firmly stuck into the step hole 414 of the stop 404 .
  • Such a structure can further clamp the tissue to the clip, and the clip can be locked for a longer period of time until the tissue is completely closed and then detached from the tissue.
  • the engagement method of the above-described engagement method and the embodiment may be implemented separately or simultaneously.
  • the two kinds of engaging mechanisms can be disposed at different positions of the clip and the stop member, such as the forearm or the tail arm, but are not limited to these two positions.
  • the clip can be received into the spring hose by the guiding device.
  • the guiding hole in the guiding device can be arranged as a tapered hole, and the wing portion of the stopping member 404 is loaded into the guiding hole, and the clip 40 is collected through the guiding hole.
  • the guiding hole in the guiding device can be arranged as a tapered hole, and the wing portion of the stopping member 404 is loaded into the guiding hole, and the clip 40 is collected through the guiding hole.

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  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

一种软组织夹，其包括夹子（40）、输送部件（30）和操作部件（10），所述夹子包括一对夹片（401，402）和将所述夹片收纳其中的止位件（404），所述一对夹片通过各自的底端连接形成夹片连接部，当所述一对夹片完全收入所述止位件后，所述一对夹片的侧棱边与所述止位件的腔壁摩擦接触使得所述夹片的头端充分闭合，且所述一对夹片与所述止位件通过卡合机构锁死。该软组织夹在使用过程中夹子可以很好地被释放、并且可以牢固地抓握组织、夹片可以良好闭合使得组织得以充分生长愈合。

Description

软组织夹 技术领域
本发明属于医疗器械领域，特别是一种配合内镜使用的软组织夹。
背景技术
胃肠道出血是一种常见且严重的病症，如果不治疗，其后果常常是致命的。该问题已促使人们开发出多种内窥镜治疗方式以实现止血，如注射硬化剂和接触热凝技术。尽管这些方式是有效的，但许多患者仍然继续出血，所以需要一种有效性高、侵入性低的器械。
目前许多公司都在研发止血夹装置，例如，CN201410222753.7公开了一种止血夹，包括夹持组件以及夹座，夹持组件包括依次连接的夹子本体和钢丝扣；夹座前端设有固定销轴，夹子本体由两个夹持臂构成，两个夹持臂的尾端通过活动销轴连接，两个夹持臂的中部各设有一个滑槽，固定销轴穿过滑槽，两个夹持臂沿滑槽往复运动形成夹子本体的开闭；滑槽的末端设有弯折结构，当夹持臂移动使得固定销轴位于弯折结构中时，两个夹持臂处于锁定闭合位置。但是，该止血夹中，两个夹持臂的咬合远端呈锯齿形闭合，该种闭合并不能使夹子紧固地抓握组织。
而市面上也有很多止血夹装置，这些常规止血装置普遍存在的一个问题是许多装置没有强到足以产生永久止血。此外，当试图用夹子闭合胃或胃肠道结构中的穿孔时，常规夹子会遭受放置困难和抓握组织的量有限的问题，从而有可能导致不完全的闭合。
因此亟需一种能够被良好释放、并且能牢固地抓握组织的夹子。
发明内容
本发明的目的在于能够提供一种可以很好地被释放、并且可以牢固地抓握组织、夹片可以良好闭合的软组织夹。
本发明的一种软组织夹包括夹子、输送部件和操作部件，
所述夹子包括一对夹片和将所述夹片收纳其中的止位件，所述一对夹片通过 各自的底端连接形成夹片连接部，当所述一对夹片完全收入所述止位件后，所述一对夹片的侧棱边与所述止位件的腔壁摩擦接触使得所述夹片的头端充分闭合，且所述一对夹片与所述止位件通过卡合机构锁死；
所述输送部件包括弹簧软管、牵引线及释放部件，所述牵引线贯穿于所述弹簧软管内腔；所述释放部件包括两个拉臂，所述两个拉臂的前端分别设有钩状部，所述两个拉臂通过各自前端的钩状部与所述夹片连接部连接，所述两个拉臂的后端分别与所述牵引线的前端固定连接；所述夹子通过释放部件和牵引线可收入和伸出所述弹簧软管前端，当释放夹子时，所述拉臂的钩状部在所述牵引线的带动下发生变形从而脱离所述夹片连接部；
所述操作部件与所述输送部件的弹簧软管和牵引线的后端连接，通过带动所述输送部件来操作所述夹子。
优选地，所述卡合机构包括在所述每一个夹片上设有的卡槽结构以及所述止位件上设有的内凹的突起，当所述一对夹片完全收入所述止位件后，所述夹片的卡槽结构牢牢锁住所述止位件的突起。
优选地，所述卡合机构包括在所述一对夹片设有的倒钩结构以及所述止位件设有的台阶孔，当所述一对夹片完全收入所述止位件后，所述夹片的倒钩结构牢牢卡进所述止位件的台阶孔。
优选地，所述一对夹片的底端分别设有连接孔，销钉管穿入所述一对夹片的连接孔形成所述夹片连接部，所述拉臂的钩状部连接于所述销钉管上。
优选地，所述止位件具有收纳所述夹片的内腔及翼部，当所述止位件位于所述弹簧软管中所述翼部收缩于所述止位件的内腔中，当所述止位件伸出所述弹簧软管的前端时所述翼部张开并卡于所述弹簧软管前端部的端面处。
优选地，所述拉臂的中段设置有台阶，当所述止位件处于所述弹簧软管中，所述止位件的翼部卡在所述台阶处从而阻止所述拉臂在所述止位件的内腔向后移动。
优选地，所述操作部件包括主体、贯穿于所述主体的操作杆、套设于所述主体上并与所述操作杆固定连接的操作块以及固定于所述主体后端的操作手柄，所述操作块可前后滑动地套设于所述主体上，所述弹簧软管的后端固定连接于 所述操作部件的主体前端，所述牵引线的后端与所述操作杆的前端连接。
相对于现有技术，采用本发明的软组织夹，通过一对夹片的侧棱边与止位件的腔壁摩擦接触使得夹片的头端充分闭合，通过一对夹片与止位件相互锁死的卡合机构使得在使用过程中夹子可以很好地被释放、并且可以牢固地抓握组织、夹片可以良好闭合使得组织得以充分生长愈合。
附图说明
图1是本发明软组织夹的整体结构示意图；
图2是本发明的第一实施方式的夹子的结构示意图；
图3是本发明的第一实施方式中的将夹子收纳在弹簧软管内的示意图；
图4是本发明的第一实施方式中的将夹子推出弹簧软管端面后的示意图；
图5是本发明的第一实施方式中的夹子夹闭组织后的示意图；
图6是本发明的第一实施方式的夹子的轴向剖面(以垂直于止位件翼部的方向)示意图；
图7是表示本发明的第一实施方式的夹子与输送部件的连接关系的示意图；
图8是本发明的第一实施方式的拉臂的示意图；
图9是本发明的第一实施方式的拉臂变形释放后的示意图；
图10是本发明的第一实施方式的夹子释放后的轴向剖面(以垂直于止位件翼部的方向)示意图；
图11是以图10的A-A线横截的夹片的示意图；
图12是本发明的第二实施方式的夹子的夹片的示意图；
图13是本发明的第二实施方式的夹子释放后的轴向剖面(以垂直于止位件翼部的方向)示意图。
具体实施方式
下面结合附图来详细说明本发明的一种软组织夹的具体较佳的实施方式，但本发明并不局限于这些具体实施方式。
实施例一
如图1-5所示，软组织夹包括夹子40、输送部件30和操作部件10。
夹子包括一对夹片401/402和将夹片收纳其中的止位件404，该一对夹片401/402与止位件通过卡合机构来锁死。夹片401/402通过各自的底端连接形成夹片连接部，当夹片401/402完全收入止位件404后，夹片401/402的侧棱边与止位件404的腔壁摩擦接触对夹片401/402的头端形成正压力从而使得夹片401/402的头端充分闭合，且夹片401/402与止位件404通过卡合机构锁死。
如图6-9所示，输送部件包括弹簧软管(图中未示出)、牵引线302和释放部件20，牵引线302贯穿于弹簧软管的内腔；
释放部件20包括两个拉臂204和205，拉臂204/205的前端分别设有钩状部，拉臂204/205通过各自前端的钩状部与夹片连接部连接，拉臂204/205的后端分别与牵引线302的前端固定连接，夹子40通过释放部件20和牵引线302可收入和伸出弹簧软管的前端，当释放夹子40时，拉臂204/205的钩状部在牵引线302的带动下发生变形从而脱离夹片连接部。
如图1所示，操作部件10与输送部件30的弹簧软管和牵引线302的后端连接，通过带动输送部件30来操作夹子40。操作部件10可以为本领域的常见结构，在这里只例举操作部件的一种实现方式。例如，操作部件10可以包括主体101、贯穿于主体101内部的操作杆102、与操作杆102固定连接从而控制操作杆运动的操作块103以及固定于主体后端的操作手柄104，操作块103套设于主体101外并可以前后滑动，弹簧软管的后端固定连接于操作部件的主体101前端，牵引线302的后端与操作杆102的前端连接从而能在操作块的作用下带动拉臂204/205并进一步带动夹片401/402动作。
如图10-11所示，在本实施例中，作为卡合机构的一种实现方式，卡合机构包括在夹片401/402上设有的卡槽结构401a/402a以及在止位件上设有的内凹的突起404c，当夹片401/402完全收入止位件后，夹片的卡槽结构401a/402a牢牢锁住止位件的突起404c，卡槽结构会与止位件突起摩擦接触。
进一步，如图7、10所示，夹片401/402的底端分别设有连接孔，销钉管403穿入夹片的连接孔形成夹片连接部，拉臂204/205的钩状部连接于(悬挂于) 该销钉管403上。
止位件404可从弹簧软管的远端伸出和收回，如图7所示，止位件404具有可收纳夹片401/402的内腔及翼部404a/404b，当止位件404处于弹簧软管中时翼部404a/404b收缩于止位件404的内腔中，当该止位件404伸出弹簧软管的前端时，翼部404a/404b张开并卡于弹簧软管前端部的端面处。
进一步，如图8所示，拉臂204/205由头端204a/205a、中段204b/205b、尾端204c/205c组成，拉臂头端204a/205a为一非闭合的弯钩结构，弯钩与夹片401/402通过销钉管403间隙配合。拉臂的中段204b/205b与止位件的翼部404a/404b配合，当止位件404处在弹簧软管中，翼部收缩将拉臂的中段204b/205b压缩固定，当止位件404在弹簧软管外端面时，翼部404a/404b扩张，拉臂204/205可以在止位件404的内腔进退。拉臂的尾端204c/205c与牵引线302固定连接。
本发明软组织夹的操作步骤包括：夹子收入弹簧软管、夹子伸出弹簧软管抓握组织、夹子夹闭组织、夹子释放。首先，夹子通过导向装置(图中未示出)被收入弹簧软管内，向前推动牵引线302，使夹子伸出弹簧软管外，止位件404的翼部弹性扩张，向后拉动牵引线302，使翼部抵住弹簧软管的端面，此时将夹片401/402抵住组织，继续拉动牵引线302，带动拉臂204/205运动，使夹片401/402抓握组织，继续后拉牵引线302，夹片401/402收入止位件404中，此时再拉动牵引线302，拉臂204/205的头部弯钩变形，夹子脱离拉臂204/205，成功释放，夹片401/402的棱边与止位件404的腔壁摩擦接触,对夹片的头端闭合形成正压力。夹片401/402的夹臂上具有卡槽401a/402a结构，与止位件凸点404c形成锁死。
当止位件404处于弹簧软管中时翼部收缩于止位件的内腔中，阻止了释放机构在止位件404的内腔向后移动，当止位件404伸出弹簧软管的远端时翼部张开卡在弹簧软管端部的端面处，释放机构可以通过止位件404的内腔向后移动，夹片401/402可以收纳入止位件404的内腔。进一步，拉臂204/205或者其他连接部件可以在中间某段(例如，拉臂的204a/205a和204b/205b)处设置台阶，当止位件404处于弹簧软管中时，止位件404的翼部可以卡在台阶处来阻止拉 臂204/205在止位件404的内腔向后移动。
本发明软组织夹，夹片夹闭后,夹片的侧棱边与止位件的腔壁摩擦接触，对夹片的前端夹闭形成正压力闭合，同时夹片的夹臂上的卡槽结构与止位件的内凹突起形成锁死，使夹片长久锁死，直至组织完全长好闭合后，与组织一起脱落，止血更安全。
实施例二
在实施例一的基础上，作为夹片和止位件的卡合机构的一种变形，如图12和图13所示，止位件404具有一个台阶孔414,夹片401/402设有倒钩结构411/412,当夹片401/402完全收入止位件404后,继续拉动夹子40,夹片401/402的倒钩结构411/412牢牢卡进止位件404的台阶孔414。
这样的结构可以进一步使夹片夹紧组织，夹片可以更长久地锁死直至组织完全长好闭合后再与组织一起脱落。
应予说明，该种卡合方式与实施例一种的卡合方式既可以单独实施，也可以同时实施。同时实施时，两种卡合机构可以设于夹片和止位部件的不同位置，比如前臂或尾臂上，但不限于这两个位置。
此外，可以通过导向装置将夹子收入弹簧软管内，比如可以将导向装置内的导向孔设置为一锥形孔，止位件404的翼部装载导向孔内，通过其导向孔将夹子40收入到弹簧软管中。
本说明书实施例所述的内容仅仅是对发明构思的实现形式的列举，本发明的保护范围不应当被视为仅限于实施例所陈述的具体形式，本发明的保护范围也及于本领域技术人员根据本发明构思所能够想到的等同技术手段。

Claims (7)

  1. 一种软组织夹，其特征在于:包括夹子、输送部件和操作部件，
    所述夹子包括一对夹片和将所述夹片收纳其中的止位件，所述一对夹片通过各自的底端连接形成夹片连接部，当所述一对夹片完全收入所述止位件后，所述一对夹片的侧棱边与所述止位件的腔壁摩擦接触使得所述夹片的头端充分闭合，且所述一对夹片与所述止位件通过卡合机构锁死；
    所述输送部件包括弹簧软管、牵引线及释放部件，所述牵引线贯穿于所述弹簧软管内腔；所述释放部件包括两个拉臂，所述两个拉臂的前端分别设有钩状部，所述两个拉臂通过各自前端的钩状部与所述夹片连接部连接，所述两个拉臂的后端分别与所述牵引线的前端固定连接；所述夹子通过释放部件和牵引线可收入和伸出所述弹簧软管前端，当释放夹子时，所述拉臂的钩状部在所述牵引线的带动下发生变形从而脱离所述夹片连接部；
    所述操作部件与所述输送部件的弹簧软管和牵引线的后端连接，通过带动所述输送部件来操作所述夹子。
  2. 根据权利要求1所述的软组织夹，其特征在于，所述卡合机构包括在所述每一个夹片上设有的卡槽结构以及所述止位件上设有的内凹的突起，当所述一对夹片完全收入所述止位件后，所述夹片的卡槽结构牢牢锁住所述止位件的突起。
  3. 根据权利要求1所述的软组织夹，其特征在于：所述卡合机构包括在所述一对夹片设有的倒钩结构以及所述止位件设有的台阶孔，当所述一对夹片完全收入所述止位件后，所述夹片的倒钩结构牢牢卡进所述止位件的台阶孔。
  4. 根据权利要求1所述的软组织夹，其特征在于：所述一对夹片的底端分别设有连接孔，销钉管穿入所述一对夹片的连接孔形成所述夹片连接部，所述拉臂的钩状部连接于所述销钉管上。
  5. 根据权利要求1所述的软组织夹，其特征在于，所述止位件具有收纳所述夹片的内腔及翼部，当所述止位件位于所述弹簧软管中所述翼部收缩于所述止位件的内腔中，当所述止位件伸出所述弹簧软管的前端时所述翼部张开并卡于所述弹簧软管前端部的端面处。
  6. 根据权利要求5所述的软组织夹，其特征在于，所述拉臂的中段设置有 台阶，当所述止位件处于所述弹簧软管中，所述止位件的翼部卡在所述台阶处从而阻止所述拉臂在所述止位件的内腔向后移动。
  7. 根据权利要求1所述的软组织夹，其特征在于，所述操作部件包括主体、贯穿于所述主体的操作杆、套设于所述主体上并与所述操作杆固定连接的操作块以及固定于所述主体后端的操作手柄，所述操作块可前后滑动地套设于所述主体上，所述弹簧软管的后端固定连接于所述操作部件的主体前端，所述牵引线的后端与所述操作杆的前端连接。
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CN113729834B (zh) * 2020-05-27 2023-08-22 常州乐奥医疗科技股份有限公司 一种止血夹用的夹头组件及止血夹
CN113331893A (zh) * 2021-07-06 2021-09-03 中国人民解放军联勤保障部队第九〇九医院 一种可稳定夹持缝合针的可旋转重复开闭软组织夹

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