WO2017156649A1 - Disposable digestive tract soft tissue clamp - Google Patents

Disposable digestive tract soft tissue clamp Download PDF

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Publication number
WO2017156649A1
WO2017156649A1 PCT/CN2016/000232 CN2016000232W WO2017156649A1 WO 2017156649 A1 WO2017156649 A1 WO 2017156649A1 CN 2016000232 W CN2016000232 W CN 2016000232W WO 2017156649 A1 WO2017156649 A1 WO 2017156649A1
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WO
WIPO (PCT)
Prior art keywords
tightening cylinder
soft tissue
metal clip
clip
metal
Prior art date
Application number
PCT/CN2016/000232
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French (fr)
Chinese (zh)
Inventor
李洪谊
刘富忠
李娇
麻树人
吴玲
张永成
李贵阳
柳全乐
孙玉盛
郑金锋
王闯
王耀涓
Original Assignee
沈阳尚贤微创医疗器械股份有限公司
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Application filed by 沈阳尚贤微创医疗器械股份有限公司 filed Critical 沈阳尚贤微创医疗器械股份有限公司
Publication of WO2017156649A1 publication Critical patent/WO2017156649A1/en

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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
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00743—Type of operation; Specification of treatment sites
    • A61B2017/00818—Treatment of the gastro-intestinal system
    • 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
    • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding

Definitions

  • the invention relates to the field of medical instruments, in particular to a disposable soft tissue clip for the digestive tract.
  • the treatment methods and techniques for the internal pathological tissues of the body are also constantly developing.
  • the lesions in the digestive tract are usually treated with endoscopic instruments, and some operations may cause bleeding in the treatment area.
  • endoscopic hemostasis methods include electrocoagulation, laser coagulation, drug hemostasis, and hemostatic clips.
  • the hemostatic clip has a fast hemostasis speed, and the soft tissue heals quickly after operation.
  • the shed body can be discharged from the body, with less trauma and less complications.
  • the existing hemostatic clip product needs to be filled with glue inside the sleeve, and the glue solidifies to form an elastic body, and the function is to prevent the closed metal claw from coming out from the sleeve and keeping the metal claw closed. Therefore, the assembly of the existing hemostatic clip product is complicated, and the production of the product takes a long time.
  • the present invention provides a disposable soft tissue clip for the digestive tract, which adopts a ring protrusion in the tightening cylinder, and utilizes the elastic deformation ability of the protrusion and/or the tightening cylinder, when the hook drives the metal
  • the clip is closed rearwardly into the tightening cylinder, and the protrusion encloses the metal clip to form an interference fit to prevent it from coming out and open; so that the soft tissue clip of the digestive tract can be clamped and prevented by a simple structure, thereby Simplify the manufacturing process of the soft tissue clip of the digestive tract and reduce its manufacturing cost.
  • a disposable gastrointestinal soft tissue clip having a handle, a transport mechanism, a hook and a release mechanism, the release mechanism comprising a metal clip and a tightening cylinder, the metal clip having a curved root and a pair extending forward from the curved root
  • the jaws, the extension arms of the jaws are arranged in a cross;
  • the inner wall of the tightening cylinder is provided with a ring protrusion
  • the curved root of the metal clip is located at the front end of the tightening cylinder
  • the tail end of the hook extends from the rear end of the tightening cylinder into the curved root portion of the tightening cylinder and the metal clip
  • the hook drives the metal clip to move inside the tightening cylinder to close a pair of jaws of the metal clip
  • the curved root on the metal clip enters the tightening cylinder and passes over the protrusion
  • the protrusion clamps the metal clip to prevent metal
  • the clip is pulled out to the front end of the tightening cylinder; the leading end of the hook is connected to the conveying mechanism.
  • the disposable gastrointestinal soft tissue clip is provided with a buckle at the front end of the tightening cylinder, and the extending arm of the clamping jaw opens a finite slot, and when the metal clip moves to the tightening cylinder to close, tighten
  • the buckle at the front end of the cylinder abuts against the limiting groove to prevent the metal clip from coming off the front end of the tightening cylinder.
  • the disposable gastrointestinal soft tissue clip, the inner diameter of the tightening cylinder The maximum width H of the curved root portion is matched when the metal clip is closed, and the height of the projection relative to the inner wall of the tightening cylinder is 0.1 mm to 0.4 mm.
  • the disposable digestive tract soft tissue clip is divided into two parts, namely a sleeve located at the rear end of the tightening cylinder and a metal cylinder located at the front end of the tightening cylinder, wherein the sleeve is made of polymer plastic material.
  • the protrusion is disposed on an inner wall of the middle portion of the sleeve.
  • the disposable gastrointestinal soft tissue clip has a height of 0.1 mm to 0.4 mm with respect to the inner wall of the sleeve.
  • the inner diameter of the sleeve at the front end of the sleeve is The inner diameter of the sleeve at the rear end of the sleeve is
  • the maximum width of the curved root is H
  • the inner diameter of the cylinder Matching the maximum width H of the curved root when the metal clip is closed, Less than the maximum width H of the curved root when the metal clip is closed,
  • the side of the buckle located on the inside of the tightening cylinder has a plane I that cooperates with the wall of the limiting slot, and the opening of the buckle has a plane matching the bottom of the limiting slot.
  • the disposable gastrointestinal soft tissue clip has a tapered surface on the side of the outer portion of the tightening cylinder that cooperates with the limiting groove.
  • the disposable gastrointestinal soft tissue clip comprises a sliding rod, a sliding ring disposed on the sliding rod, a guide wire, a spring tube and a protection tube, the spring tube is sleeved outside the guide wire, and the protection tube is sleeved On the spring tube, one end of the guide wire is connected to the slip ring, and the other end of the guide wire is connected to the head end of the hook, and the handle is disposed at the top end of the slide bar.
  • the invention creates a single-use digestive soft tissue clip with a simple structure, and the combination and cooperation of the structure and the material properties, thereby eliminating the operation of filling the glue in the prior art, and making the assembly process of the disposable digestive soft tissue clip easier.
  • the material of the sleeve is made of polymer plastic, and the formed sleeve has good elastic deformation ability.
  • the metal clip When the metal clip is closed and returned to the sleeve copper, the metal clip can be tightly wrapped to prevent it from coming forward. .
  • a ring of protrusions is arranged inside the sleeve, and when the metal clip is closed, the sleeve is retracted into the sleeve, and the protrusion can increase the tightening force and form an interference fit to further prevent it from coming forward.
  • the size of the curved root is larger than the diameter of the tail of the sleeve, and after the metal clip is closed, the two will also form an interference fit to further prevent the metal clip from coming out and opening.
  • the front end of the metal tube is provided with a buckle, and the metal clip is opened with a finite slot.
  • the buckle at the front end of the metal tube abuts against the metal clip limit groove, further preventing the metal clip from coming forward.
  • the buckle has a conical surface that can cooperate with the limiting groove to guide and limit.
  • Figure 1 is a schematic view showing the structure of a disposable soft tissue clip of the digestive tract.
  • FIG. 2 is a partial cross-sectional structural view of a disposable gastrointestinal soft tissue clip.
  • Figure 3 is a schematic view showing the structure of the metal clip in the release mechanism.
  • Figure 4 is a schematic view showing the structure of the metal clip closed in the release mechanism.
  • FIG. 5 is a schematic structural view of the metal clip shown in FIG. 4.
  • FIG. 5 is a schematic structural view of the metal clip shown in FIG. 4.
  • Figure 6 is a schematic view showing the structure of the tightening cylinder shown in Figure 4.
  • the disposable soft tissue clip of the digestive tract has a handle, a transport mechanism, a hook 4 and a release mechanism.
  • the conveying mechanism comprises a sliding rod 8, a sliding ring 9 disposed on the sliding rod 8, a guide wire 5, a spring tube 6 and a protection tube 7, the spring tube 6 is sleeved outside the guide wire 5, and the protection tube 7 is sleeved on the spring tube 6
  • Upper end of the guide wire 5 is connected to the slip ring 9, and the other end of the guide wire 5 is connected to the head end of the hook 4, and the guide wire 5 and the hook 4 are connected by welding.
  • the handle is disposed at the top end of the slider 8.
  • the release mechanism shown in Figures 3-6 includes a metal clip 1 having a curved root portion 11 and a pair of jaws 12 extending forwardly from the curved root portion 11, the extension arms of the jaws 12 intersecting.
  • the inner wall of the tightening cylinder is provided with a ring of protrusions 31.
  • the curved root portion 11 of the metal clip 1 is located at the front end of the tightening cylinder, and the tail end of the hook 4 extends from the rear end of the tightening cylinder into the tightening cylinder and the metal clip.
  • the curved root portion 11 of the 1 is connected, and the hook 4 drives the metal clip 1 to move inside the tightening cylinder to close the pair of jaws 12 of the metal clip 1, and the curved root portion 11 on the metal clip 1 enters the tightening cylinder and passes over the protrusion 31, the protrusion 31 encloses the metal clip 1 to prevent the metal clip 31 from coming off the front end of the tightening cylinder.
  • the hook 4 and the metal clip 1 are hooked.
  • the maximum width H of the curved root portion 11 is matched when the metal clip 1 is closed, and the height of the projection 31 with respect to the inner wall of the tightening cylinder is 0.1 mm to 0.4 mm.
  • the tightening cylinder is divided into two parts, namely a sleeve 3 at the rear end of the tightening cylinder and a metal cylinder 2 at the front end of the tightening cylinder.
  • the sleeve 3 is made of a polymer plastic material and has a large elastic deformation capability, and the protrusion 31 It is disposed on the inner wall of the middle of the sleeve 3.
  • the height of the projection 31 with respect to the inner wall of the sleeve 3 is 0.1 mm to 0.4 mm.
  • the inner diameter of the sleeve at the front end of the sleeve is The inner diameter of the sleeve at the rear end of the sleeve is
  • the maximum width of the curved root is H
  • the inner diameter of the cylinder Matching the maximum width H of the curved root when the metal clip is closed, Less than the maximum width H of the curved root when the metal clip is closed, More preferably Before the metal clip 1 is closed, the maximum width of the curved root portion 11 is H 1
  • the inner diameter of the tube of the projection 31 is There is a certain size relationship
  • the hook 4 moves backward, the metal clip 1 is brought into the tightening cylinder to close, and the maximum width of the curved root portion 11 of the metal clip 1 is changed from H 1 to H, due to H 1 and The difference is not large, the metal clip 1 can easily enter the sleeve 2 and is satisfied at this time.
  • the sleeve 2 is made of a polymer material having a good elastic deformation ability, when the metal clip 1 instantaneously passes through the protrusion 31 in the sleeve 2, the sleeve protrusion is outwardly deformed, and then the metal clip 1 is quickly wrapped. , forming an interference fit, at this time, the maximum width of the curved root portion 11 of the metal clip 1 Continue to pull the metal clip 1, the metal clip 1 finally enters the tail of the sleeve 2, and the tail of the metal clip 1 has a tendency to restore the initial height due to the initial height. The curved root portion 11 of the metal clip 1 is wrapped by the end of the sleeve 2 to form an interference fit, thereby further preventing the metal clip 1 from being disengaged forward.
  • the front end of the tightening cylinder that is, the front end of the metal cylinder 2 is provided with a buckle 21, and the extending arm of the clamping jaw 12 is opened with a limit groove 13.
  • the buckle of the front end of the metal cylinder 2 21 is abutted against the limiting groove 13 to prevent the metal clip 1 from coming off the front end of the tightening cylinder.
  • the buckle 21 is located on the inner side of the metal cylinder 2 and has a plane I22 that cooperates with the slot wall of the limiting slot 13.
  • the opening of the latch 21 has a plane II 23 that cooperates with the slot bottom of the limiting slot 13.
  • the buckle 21 is located on the outer side of the metal cylinder 2 and has a tapered surface 24 that cooperates with the limiting groove 13.

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

Disclosed a disposable digestive tract soft tissue clamp, belonging to the field of medical instruments. The disposable digestive tract soft tissue clamp is provided with a handle, a delivery mechanism, a hook (4) and a release mechanism, wherein the release mechanism comprises a metal clamp (1) and a tightening barrel, the metal clamp (1) being provided with an arc-shaped root (11) and a pair of clamping jaws (12) extending forwards from the arc-shaped root (11), and extending arms of the clamping jaws (12) being in a crosswise arrangement; and an inner wall of the tightening barrel is provided with a circle of protrusions (31), the arc-shaped root (11) of the metal clamp (1) is located at the front end of the tightening barrel, and the tail end of the hook (4) stretches into the tightening barrel from the back end of the tightening barrel and is connected to the arc-shaped root (11) of the metal clamp (1). The hook (4) drives the metal clamp (1) to move into the tightening barrel to enable the clamping jaws (12) of the metal clamp (1) to be closed, the arc-shaped root (11) of the metal clamp (1) enters the tightening barrel and passes through the protrusions (31), and the protrusions (31) tightly wrap around the metal clamp (1) to prevent the metal clamp (1) from being disengaged towards the front end of the tightening barrel to be opened. The head end of the hook (4) is connected to the conveying mechanism, thereby omitting the glue filling operation and enabling the assembling technology of the disposable digestive tract soft tissue clamp to be simpler.

Description

一次性使用消化道软组织夹Disposable digestive tract soft tissue clip 技术领域Technical field
本发明涉及医疗器械领域，尤其涉及一种一次性使用消化道软组织夹。The invention relates to the field of medical instruments, in particular to a disposable soft tissue clip for the digestive tract.
背景技术Background technique
随着医学技术的不断进步和发展，对于身体内部病变组织的治疗方法和技术也在不断发展，消化道内的病变通常采用内窥镜下器械手术治疗，有的手术会造成治疗区域出血。目前常采用的内窥镜止血方法有电凝法，激光凝固法、药物止血法以及止血夹等方法。止血夹止血速度快、术后软组织愈合快，脱落体能从体外排出，创伤小，并发症少。With the continuous advancement and development of medical technology, the treatment methods and techniques for the internal pathological tissues of the body are also constantly developing. The lesions in the digestive tract are usually treated with endoscopic instruments, and some operations may cause bleeding in the treatment area. Currently used endoscopic hemostasis methods include electrocoagulation, laser coagulation, drug hemostasis, and hemostatic clips. The hemostatic clip has a fast hemostasis speed, and the soft tissue heals quickly after operation. The shed body can be discharged from the body, with less trauma and less complications.
现有止血夹产品，在套管内部需要填充胶水，胶水固化后形成弹性体，其作用是防止闭合后的金属爪从套管中向前脱出，使金属爪保持闭合状态。因此，现有止血夹产品组装较复杂，生产产品时耗时大。The existing hemostatic clip product needs to be filled with glue inside the sleeve, and the glue solidifies to form an elastic body, and the function is to prevent the closed metal claw from coming out from the sleeve and keeping the metal claw closed. Therefore, the assembly of the existing hemostatic clip product is complicated, and the production of the product takes a long time.
发明内容Summary of the invention
针对现有技术的不足，本发明创造提供一种一次性使用消化道软组织夹，采用在收紧筒内设置一圈凸起，利用凸起和/收紧筒的弹性形变能力，当挂钩带动金属夹向后闭合进入收紧筒内，凸起包紧金属夹，形成过盈配合，防止其向前脱出张开；使得该消化道软组织夹通过简单的结构即可达到夹紧防脱目的，从而简化该消化道软组织夹的制造工艺，并降低其制造成本。In view of the deficiencies of the prior art, the present invention provides a disposable soft tissue clip for the digestive tract, which adopts a ring protrusion in the tightening cylinder, and utilizes the elastic deformation ability of the protrusion and/or the tightening cylinder, when the hook drives the metal The clip is closed rearwardly into the tightening cylinder, and the protrusion encloses the metal clip to form an interference fit to prevent it from coming out and open; so that the soft tissue clip of the digestive tract can be clamped and prevented by a simple structure, thereby Simplify the manufacturing process of the soft tissue clip of the digestive tract and reduce its manufacturing cost.
本发明创造采用的技术方案为：The technical solution adopted by the invention is:
一次性使用消化道软组织夹，具有手柄、输送机构、挂钩和释放机构，所述释放机构包括金属夹和收紧筒，所述金属夹具有弧形根部和一对从弧形根部向前延伸的夹爪，夹爪的延伸臂呈交叉设置；A disposable gastrointestinal soft tissue clip having a handle, a transport mechanism, a hook and a release mechanism, the release mechanism comprising a metal clip and a tightening cylinder, the metal clip having a curved root and a pair extending forward from the curved root The jaws, the extension arms of the jaws are arranged in a cross;
所述收紧筒的内壁设有一圈凸起，金属夹的弧形根部位于收紧筒的前端，挂钩的尾端从收紧筒的后端伸入收紧筒内与金属夹的弧形根部连接，所述挂钩带动金属夹向收紧筒内部移动使金属夹的一对夹爪闭合，金属夹上的弧形根部进入收紧筒并越过凸起，凸起将金属夹包紧，防止金属夹向收紧筒前端脱出张开；所述挂钩的首端与输送机构连接。The inner wall of the tightening cylinder is provided with a ring protrusion, and the curved root of the metal clip is located at the front end of the tightening cylinder, and the tail end of the hook extends from the rear end of the tightening cylinder into the curved root portion of the tightening cylinder and the metal clip Connecting, the hook drives the metal clip to move inside the tightening cylinder to close a pair of jaws of the metal clip, and the curved root on the metal clip enters the tightening cylinder and passes over the protrusion, and the protrusion clamps the metal clip to prevent metal The clip is pulled out to the front end of the tightening cylinder; the leading end of the hook is connected to the conveying mechanism.
所述的一次性使用消化道软组织夹，所述收紧筒的前端设有卡扣，所述夹爪的延伸臂上开有限位槽，当金属夹向收紧筒内移动闭合时，收紧筒前端的卡扣与限位槽相抵，防止金属夹向收紧筒前端脱出张开。The disposable gastrointestinal soft tissue clip is provided with a buckle at the front end of the tightening cylinder, and the extending arm of the clamping jaw opens a finite slot, and when the metal clip moves to the tightening cylinder to close, tighten The buckle at the front end of the cylinder abuts against the limiting groove to prevent the metal clip from coming off the front end of the tightening cylinder.
所述的一次性使用消化道软组织夹，所述收紧筒的筒内径
Figure PCTCN2016000232-appb-000001
与金属夹闭合时弧形根部的最大宽度H相匹配，所述凸起相对于收紧筒内壁的高度为0.1mm-0.4mm。 The disposable gastrointestinal soft tissue clip, the inner diameter of the tightening cylinder
Figure PCTCN2016000232-appb-000001
The maximum width H of the curved root portion is matched when the metal clip is closed, and the height of the projection relative to the inner wall of the tightening cylinder is 0.1 mm to 0.4 mm.
所述的一次性使用消化道软组织夹，所述收紧筒分为两部分，分别为位于收紧筒后端的套筒和位于收紧筒前端的金属筒，所述套筒为高分子塑料材质，所述凸起设置在套筒中部的内壁上。The disposable digestive tract soft tissue clip is divided into two parts, namely a sleeve located at the rear end of the tightening cylinder and a metal cylinder located at the front end of the tightening cylinder, wherein the sleeve is made of polymer plastic material. The protrusion is disposed on an inner wall of the middle portion of the sleeve.
所述的一次性使用消化道软组织夹，所述凸起相对于套筒内壁的高度为0.1mm-0.4mm。The disposable gastrointestinal soft tissue clip has a height of 0.1 mm to 0.4 mm with respect to the inner wall of the sleeve.
所述的一次性使用消化道软组织夹，套筒前端的筒内径为
Figure PCTCN2016000232-appb-000002
套筒后端的筒内径为
Figure PCTCN2016000232-appb-000003
金属夹闭合时弧形根部的最大宽度为H，筒内径
Figure PCTCN2016000232-appb-000004
与金属夹闭合时弧形根部的最大宽度H相匹配，
Figure PCTCN2016000232-appb-000005
小于金属夹闭合时弧形根部的最大宽度H，
Figure PCTCN2016000232-appb-000006
优选地
Figure PCTCN2016000232-appb-000007
Figure PCTCN2016000232-appb-000008
The disposable gastrointestinal soft tissue clip, the inner diameter of the sleeve at the front end of the sleeve is
Figure PCTCN2016000232-appb-000002
The inner diameter of the sleeve at the rear end of the sleeve is
Figure PCTCN2016000232-appb-000003
When the metal clip is closed, the maximum width of the curved root is H, the inner diameter of the cylinder
Figure PCTCN2016000232-appb-000004
Matching the maximum width H of the curved root when the metal clip is closed,
Figure PCTCN2016000232-appb-000005
Less than the maximum width H of the curved root when the metal clip is closed,
Figure PCTCN2016000232-appb-000006
Preferably
Figure PCTCN2016000232-appb-000007
Figure PCTCN2016000232-appb-000008
所述的一次性使用消化道软组织夹，所述卡扣位于收紧筒内部的一侧具有与限位槽槽壁配合的平面I，卡扣的开口处具有与限位槽槽底配合的平面II。In the disposable gastrointestinal soft tissue clip, the side of the buckle located on the inside of the tightening cylinder has a plane I that cooperates with the wall of the limiting slot, and the opening of the buckle has a plane matching the bottom of the limiting slot. II.
所述的一次性使用消化道软组织夹，所述卡扣位于收紧筒外部的一侧具有与限位槽配合的锥形面。The disposable gastrointestinal soft tissue clip has a tapered surface on the side of the outer portion of the tightening cylinder that cooperates with the limiting groove.
所述的一次性使用消化道软组织夹，所述输送机构包括滑杆、设置在滑杆上的滑环、导丝、弹簧管和保护管，弹簧管套设在导丝外部，保护管套设在弹簧管上，导丝的一端与滑环相连接，导丝的另一端与挂钩的首端连接，所述手柄设置在滑杆的顶端。The disposable gastrointestinal soft tissue clip, the conveying mechanism comprises a sliding rod, a sliding ring disposed on the sliding rod, a guide wire, a spring tube and a protection tube, the spring tube is sleeved outside the guide wire, and the protection tube is sleeved On the spring tube, one end of the guide wire is connected to the slip ring, and the other end of the guide wire is connected to the head end of the hook, and the handle is disposed at the top end of the slide bar.
本发明创造具有以下有益效果：The invention has the following beneficial effects:
本发明创造一次性使用消化道软组织夹利用简单结构，以及结构与材料性质的结合和配合，省去了现有技术中填充胶水的操作，使一次性使用消化道软组织夹的组装工艺更加简单。The invention creates a single-use digestive soft tissue clip with a simple structure, and the combination and cooperation of the structure and the material properties, thereby eliminating the operation of filling the glue in the prior art, and making the assembly process of the disposable digestive soft tissue clip easier.
本发明创造中套筒的材质选用高分子塑料，成型后的套筒具有较好的弹性变形能力，当金属夹闭合后退回套铜中，能牢牢地包紧金属夹，防止其向前脱出。套筒内部设有一圈凸起，当金属夹闭合后退回套筒中，凸起能使包紧力增大，并形成过盈配合，进一步防止其向前脱出。金属夹闭合时弧形根部的尺寸大于套筒尾部的直径，金属夹闭合后，二者也会形成过盈配合，进一步防止金属夹向前脱出张开。The material of the sleeve is made of polymer plastic, and the formed sleeve has good elastic deformation ability. When the metal clip is closed and returned to the sleeve copper, the metal clip can be tightly wrapped to prevent it from coming forward. . A ring of protrusions is arranged inside the sleeve, and when the metal clip is closed, the sleeve is retracted into the sleeve, and the protrusion can increase the tightening force and form an interference fit to further prevent it from coming forward. When the metal clip is closed, the size of the curved root is larger than the diameter of the tail of the sleeve, and after the metal clip is closed, the two will also form an interference fit to further prevent the metal clip from coming out and opening.
金属筒前端设置卡扣，金属夹上开有限位槽，当金属夹向后运动时，金属筒前端的卡扣与金属夹限位槽相抵，进一步防止金属夹向前脱出。卡扣上设有能够与限位槽配合的圆锥面，起到导向和限制的作用。The front end of the metal tube is provided with a buckle, and the metal clip is opened with a finite slot. When the metal clip moves backward, the buckle at the front end of the metal tube abuts against the metal clip limit groove, further preventing the metal clip from coming forward. The buckle has a conical surface that can cooperate with the limiting groove to guide and limit.
附图说明DRAWINGS
图1为一次性使用消化道软组织夹的结构示意图。Figure 1 is a schematic view showing the structure of a disposable soft tissue clip of the digestive tract.
图2为一次性使用消化道软组织夹的局部剖视结构示意图。 2 is a partial cross-sectional structural view of a disposable gastrointestinal soft tissue clip.
图3为释放机构中金属夹张开的结构示意图。Figure 3 is a schematic view showing the structure of the metal clip in the release mechanism.
图4为释放机构中金属夹闭合的结构示意图。Figure 4 is a schematic view showing the structure of the metal clip closed in the release mechanism.
图5为图4所示金属夹的结构示意图。FIG. 5 is a schematic structural view of the metal clip shown in FIG. 4. FIG.
图6为图4所示收紧筒的结构示意图。Figure 6 is a schematic view showing the structure of the tightening cylinder shown in Figure 4.
具体实施方式detailed description
如图1-6所示一次性使用消化道软组织夹，具有手柄、输送机构、挂钩4和释放机构。输送机构包括滑杆8、设置在滑杆8上的滑环9、导丝5、弹簧管6和保护管7，弹簧管6套设在导丝5外部，保护管7套设在弹簧管6上，导丝5的一端与滑环9相连接，导丝5的另一端与挂钩4的首端连接，导丝5与挂钩4采用焊接形式连接。手柄设置在滑杆8的顶端。As shown in Figure 1-6, the disposable soft tissue clip of the digestive tract has a handle, a transport mechanism, a hook 4 and a release mechanism. The conveying mechanism comprises a sliding rod 8, a sliding ring 9 disposed on the sliding rod 8, a guide wire 5, a spring tube 6 and a protection tube 7, the spring tube 6 is sleeved outside the guide wire 5, and the protection tube 7 is sleeved on the spring tube 6 Upper end of the guide wire 5 is connected to the slip ring 9, and the other end of the guide wire 5 is connected to the head end of the hook 4, and the guide wire 5 and the hook 4 are connected by welding. The handle is disposed at the top end of the slider 8.
如图3-6所示释放机构包括金属夹1和收紧筒，金属夹1具有弧形根部11和一对从弧形根部11向前延伸的夹爪12，夹爪12的延伸臂呈交叉设置；收紧筒的内壁设有一圈凸起31，金属夹1的弧形根部11位于收紧筒的前端，挂钩4的尾端从收紧筒的后端伸入收紧筒内与金属夹1的弧形根部11连接，挂钩4带动金属夹1向收紧筒内部移动使金属夹1的一对夹爪12闭合，金属夹1上的弧形根部11进入收紧筒内并越过凸起31，凸起31将金属夹1包紧，防止金属夹31向收紧筒前端脱出张开。挂钩4与金属夹1采用钩挂连接。The release mechanism shown in Figures 3-6 includes a metal clip 1 having a curved root portion 11 and a pair of jaws 12 extending forwardly from the curved root portion 11, the extension arms of the jaws 12 intersecting. The inner wall of the tightening cylinder is provided with a ring of protrusions 31. The curved root portion 11 of the metal clip 1 is located at the front end of the tightening cylinder, and the tail end of the hook 4 extends from the rear end of the tightening cylinder into the tightening cylinder and the metal clip. The curved root portion 11 of the 1 is connected, and the hook 4 drives the metal clip 1 to move inside the tightening cylinder to close the pair of jaws 12 of the metal clip 1, and the curved root portion 11 on the metal clip 1 enters the tightening cylinder and passes over the protrusion 31, the protrusion 31 encloses the metal clip 1 to prevent the metal clip 31 from coming off the front end of the tightening cylinder. The hook 4 and the metal clip 1 are hooked.
收紧筒的筒内径
Figure PCTCN2016000232-appb-000009
与金属夹1闭合时弧形根部11的最大宽度H相匹配，凸起31相对于收紧筒内壁的高度为0.1mm-0.4mm。Tighten the inner diameter of the barrel
Figure PCTCN2016000232-appb-000009
The maximum width H of the curved root portion 11 is matched when the metal clip 1 is closed, and the height of the projection 31 with respect to the inner wall of the tightening cylinder is 0.1 mm to 0.4 mm.
收紧筒分为两部分，分别为位于收紧筒后端的套筒3和位于收紧筒前端的金属筒2，套筒3为高分子塑料材质，具有较大的弹性变形能力，凸起31设置在套筒3中部的内壁上。凸起31相对于套筒3内壁的高度为0.1mm-0.4mm。套筒前端的筒内径为
Figure PCTCN2016000232-appb-000010
套筒后端的筒内径为
Figure PCTCN2016000232-appb-000011
金属夹1闭合时弧形根部的最大宽度为H，筒内径
Figure PCTCN2016000232-appb-000012
与金属夹闭合时弧形根部的最大宽度H相匹配，
Figure PCTCN2016000232-appb-000013
小于金属夹闭合时弧形根部的最大宽度H，
Figure PCTCN2016000232-appb-000014
更为优选地
Figure PCTCN2016000232-appb-000015
金属夹1闭合前，弧形根部11的最大宽度为H1，凸起31的筒内径为
Figure PCTCN2016000232-appb-000016
存在一定的大小关系即
Figure PCTCN2016000232-appb-000017
当挂钩4向后运动，带动金属夹1进入收紧筒闭合，金属夹1的弧形根部11最大宽度由H1变为H，由于H1与
Figure PCTCN2016000232-appb-000018
相差不大，金属夹1能够轻松进入套筒2，且此时满足
Figure PCTCN2016000232-appb-000019
由于套筒2由弹性变形能力较好的高分子材料制成，当金属夹1瞬间通过套筒2内的凸起31时，套筒凸起处会向外变形，而后迅速包紧金属夹1，形成过盈配合，此时金属夹1的弧形根部11最大宽度
Figure PCTCN2016000232-appb-000020
继续拉动金属夹1，金属夹1最终进入套筒2的尾部，金属夹1尾部有恢复初始高度的趋势，由于初始高 度
Figure PCTCN2016000232-appb-000021
金属夹1的弧形根部11被套筒2尾端包紧，形成过盈配合，因此进一步防止金属夹1向前脱出张开。The tightening cylinder is divided into two parts, namely a sleeve 3 at the rear end of the tightening cylinder and a metal cylinder 2 at the front end of the tightening cylinder. The sleeve 3 is made of a polymer plastic material and has a large elastic deformation capability, and the protrusion 31 It is disposed on the inner wall of the middle of the sleeve 3. The height of the projection 31 with respect to the inner wall of the sleeve 3 is 0.1 mm to 0.4 mm. The inner diameter of the sleeve at the front end of the sleeve is
Figure PCTCN2016000232-appb-000010
The inner diameter of the sleeve at the rear end of the sleeve is
Figure PCTCN2016000232-appb-000011
When the metal clip 1 is closed, the maximum width of the curved root is H, the inner diameter of the cylinder
Figure PCTCN2016000232-appb-000012
Matching the maximum width H of the curved root when the metal clip is closed,
Figure PCTCN2016000232-appb-000013
Less than the maximum width H of the curved root when the metal clip is closed,
Figure PCTCN2016000232-appb-000014
More preferably
Figure PCTCN2016000232-appb-000015
Before the metal clip 1 is closed, the maximum width of the curved root portion 11 is H 1 , and the inner diameter of the tube of the projection 31 is
Figure PCTCN2016000232-appb-000016
There is a certain size relationship
Figure PCTCN2016000232-appb-000017
When the hook 4 moves backward, the metal clip 1 is brought into the tightening cylinder to close, and the maximum width of the curved root portion 11 of the metal clip 1 is changed from H 1 to H, due to H 1 and
Figure PCTCN2016000232-appb-000018
The difference is not large, the metal clip 1 can easily enter the sleeve 2 and is satisfied at this time.
Figure PCTCN2016000232-appb-000019
Since the sleeve 2 is made of a polymer material having a good elastic deformation ability, when the metal clip 1 instantaneously passes through the protrusion 31 in the sleeve 2, the sleeve protrusion is outwardly deformed, and then the metal clip 1 is quickly wrapped. , forming an interference fit, at this time, the maximum width of the curved root portion 11 of the metal clip 1
Figure PCTCN2016000232-appb-000020
Continue to pull the metal clip 1, the metal clip 1 finally enters the tail of the sleeve 2, and the tail of the metal clip 1 has a tendency to restore the initial height due to the initial height.
Figure PCTCN2016000232-appb-000021
The curved root portion 11 of the metal clip 1 is wrapped by the end of the sleeve 2 to form an interference fit, thereby further preventing the metal clip 1 from being disengaged forward.
收紧筒的前端即金属筒2的前端设有卡扣21，夹爪12的延伸臂上开有限位槽13，当金属夹1向收紧筒内移动闭合时，金属筒2前端的卡扣21与限位槽13相抵，防止金属夹1向收紧筒前端脱出张开。卡扣21位于金属筒2内部的一侧具有与限位槽13槽壁配合的平面I22，卡扣21的开口处具有与限位槽13槽底配合的平面II 23。优选地，卡扣21位于金属筒2外部的一侧具有与限位槽13配合的锥形面24。The front end of the tightening cylinder, that is, the front end of the metal cylinder 2 is provided with a buckle 21, and the extending arm of the clamping jaw 12 is opened with a limit groove 13. When the metal clip 1 is moved and closed in the tightening cylinder, the buckle of the front end of the metal cylinder 2 21 is abutted against the limiting groove 13 to prevent the metal clip 1 from coming off the front end of the tightening cylinder. The buckle 21 is located on the inner side of the metal cylinder 2 and has a plane I22 that cooperates with the slot wall of the limiting slot 13. The opening of the latch 21 has a plane II 23 that cooperates with the slot bottom of the limiting slot 13. Preferably, the buckle 21 is located on the outer side of the metal cylinder 2 and has a tapered surface 24 that cooperates with the limiting groove 13.
输送机构中的滑环9运动时，带动导丝5、挂钩4、金属夹1一起运动；弹簧管6与保护管7间存在间隙，二者可相对自由滑动；保持保护管7位置不变，向后移动滑杆8整体，带动金属夹1缩进保护管7内部，进入内窥镜钳道时，可保护金属夹1和内窥镜钳道完好，不受破坏；向后拉动保护管7，金属夹1逐渐张开；滑环9可在滑杆8上滑动，当滑环9向后运动时，带动导丝5向后运动，从而通过挂钩4带动金属夹1，使金属夹1进入收紧筒内逐渐闭合锁紧，挂钩4脱离金属夹1，继而脱离整个释放机构。 When the slip ring 9 in the conveying mechanism moves, the guide wire 5, the hook 4 and the metal clip 1 are moved together; there is a gap between the spring tube 6 and the protection tube 7, and the two can slide relatively freely; the position of the protection tube 7 is kept unchanged. Moving the slider 8 as a whole backwards, driving the metal clip 1 into the inside of the protection tube 7, and entering the endoscope clamp, the metal clip 1 and the endoscope clamp can be protected from being damaged; the protective tube 7 is pulled backwards. The metal clip 1 is gradually opened; the slip ring 9 can slide on the sliding rod 8, and when the sliding ring 9 moves backward, the guide wire 5 is driven to move backward, thereby driving the metal clip 1 through the hook 4, so that the metal clip 1 enters. The tightening cylinder is gradually closed and locked, and the hook 4 is disengaged from the metal clip 1, and then the entire release mechanism is released.

Claims (9)

  1. 一次性使用消化道软组织夹，具有手柄、输送机构、挂钩和释放机构，所述释放机构包括金属夹和收紧筒，其特征在于，a disposable gastrointestinal soft tissue clip having a handle, a transport mechanism, a hook and a release mechanism, the release mechanism comprising a metal clip and a tightening cylinder, wherein
    所述金属夹具有弧形根部和一对从弧形根部向前延伸的夹爪，夹爪的延伸臂呈交叉设置；The metal clip has a curved root portion and a pair of jaws extending forward from the curved root portion, and the extending arms of the jaws are disposed in an intersecting manner;
    所述收紧筒的内壁设有一圈凸起，金属夹的弧形根部位于收紧筒的前端，挂钩的尾端从收紧筒的后端伸入收紧筒内与金属夹的弧形根部连接，所述挂钩带动金属夹向收紧筒内部移动使金属夹的一对夹爪闭合，金属夹上的弧形根部进入收紧筒并越过凸起，凸起将金属夹包紧，防止金属夹向收紧筒前端脱出张开；所述挂钩的首端与输送机构连接。The inner wall of the tightening cylinder is provided with a ring protrusion, and the curved root of the metal clip is located at the front end of the tightening cylinder, and the tail end of the hook extends from the rear end of the tightening cylinder into the curved root portion of the tightening cylinder and the metal clip Connecting, the hook drives the metal clip to move inside the tightening cylinder to close a pair of jaws of the metal clip, and the curved root on the metal clip enters the tightening cylinder and passes over the protrusion, and the protrusion clamps the metal clip to prevent metal The clip is pulled out to the front end of the tightening cylinder; the leading end of the hook is connected to the conveying mechanism.
  2. 根据权利要求1所述的一次性使用消化道软组织夹，其特征在于，所述收紧筒的前端设有卡扣，所述夹爪的延伸臂上开有限位槽，当金属夹向收紧筒内移动闭合时，收紧筒前端的卡扣与限位槽相抵，防止金属夹向收紧筒前端脱出张开。The disposable digestive tract soft tissue clip according to claim 1, wherein the front end of the tightening cylinder is provided with a buckle, and the extending arm of the clamping jaw opens a limited position groove, and the metal clip is tightened. When the movement in the cylinder is closed, the buckle at the front end of the tightening cylinder abuts against the limiting groove to prevent the metal clip from coming off the front end of the tightening cylinder.
  3. 根据权利要求1所述的一次性使用消化道软组织夹，其特征在于，所述收紧筒的筒内径
    Figure PCTCN2016000232-appb-100001
    与金属夹闭合时弧形根部的最大宽度H相匹配，所述凸起相对于收紧筒内壁的高度为0.1mm-0.4mm。    A disposable gastrointestinal soft tissue clip according to claim 1 wherein the inner diameter of the barrel of the tightening cylinder
    Figure PCTCN2016000232-appb-100001
    The maximum width H of the curved root portion is matched when the metal clip is closed, and the height of the projection relative to the inner wall of the tightening cylinder is 0.1 mm to 0.4 mm.
  4. 根据权利要求1或2所述的一次性使用消化道软组织夹，其特征在于，所述收紧筒分为两部分，分别为位于收紧筒后端的套筒和位于收紧筒前端的金属筒，所述套筒为高分子塑料材质，所述凸起设置在套筒中部的内壁上。The disposable digestive tract soft tissue clip according to claim 1 or 2, wherein the tightening cylinder is divided into two parts, namely a sleeve at the rear end of the tightening cylinder and a metal cylinder at the front end of the tightening cylinder. The sleeve is made of a polymer plastic, and the protrusion is disposed on an inner wall of the middle portion of the sleeve.
  5. 根据权利要求4所述的一次性使用消化道软组织夹，其特征在于，所述凸起相对于套筒内壁的高度为0.1mm-0.4mm。A disposable gastrointestinal soft tissue clip according to claim 4, wherein the height of the projection relative to the inner wall of the sleeve is from 0.1 mm to 0.4 mm.
  6. 根据权利要求4所述的一次性使用消化道软组织夹，其特征在于，套筒前端的筒内径为
    Figure PCTCN2016000232-appb-100002
    套筒后端的筒内径为
    Figure PCTCN2016000232-appb-100003
    金属夹闭合时弧形根部的最大宽度为H，筒内径
    Figure PCTCN2016000232-appb-100004
    与金属夹闭合时弧形根部的最大宽度H相匹配，
    Figure PCTCN2016000232-appb-100005
    小于金属夹闭合时弧形根部的最大宽度H，
    Figure PCTCN2016000232-appb-100006
    优选地
    Figure PCTCN2016000232-appb-100007
    A disposable gastrointestinal soft tissue clip according to claim 4, wherein the inner diameter of the barrel at the front end of the sleeve is
    Figure PCTCN2016000232-appb-100002
    The inner diameter of the sleeve at the rear end of the sleeve is
    Figure PCTCN2016000232-appb-100003
    When the metal clip is closed, the maximum width of the curved root is H, the inner diameter of the cylinder
    Figure PCTCN2016000232-appb-100004
    Matching the maximum width H of the curved root when the metal clip is closed,
    Figure PCTCN2016000232-appb-100005
    Less than the maximum width H of the curved root when the metal clip is closed,
    Figure PCTCN2016000232-appb-100006
    Preferably
    Figure PCTCN2016000232-appb-100007
  7. 根据权利要求2所述的一次性使用消化道软组织夹，其特征在于，所述卡扣位于收紧筒内部的一侧具有与限位槽槽壁配合的平面I，卡扣的开口处具有与限位槽槽底配合的平面II。The disposable gastrointestinal soft tissue clip according to claim 2, wherein the side of the buckle located inside the tightening cylinder has a plane I that cooperates with the wall of the limiting slot, and the opening of the buckle has Plane II with the bottom of the limit groove.
  8. 根据权利要求2或7所述的一次性使用消化道软组织夹，其特征在于，所述卡扣位于收紧筒外部的一侧具有与限位槽配合的锥形面。The disposable digestive tract soft tissue clip according to claim 2 or 7, wherein the buckle is located on a side of the outer portion of the tightening cylinder and has a tapered surface that cooperates with the limiting groove.
  9. 根据权利要求1所述的一次性使用消化道软组织夹，其特征在于，所述输送机构包括滑杆、设置在滑杆上的滑环、导丝、弹簧管和保护管，弹簧管套设在导丝外部，保护管套 设在弹簧管上，导丝的一端与滑环相连接，导丝的另一端与挂钩的首端连接，所述手柄设置在滑杆的顶端。 The disposable digestive tract soft tissue clip according to claim 1, wherein the conveying mechanism comprises a sliding rod, a slip ring disposed on the sliding rod, a guide wire, a spring tube and a protection tube, and the spring tube is sleeved on Outside the guide wire, protect the sleeve It is disposed on the spring tube, one end of the guide wire is connected with the slip ring, and the other end of the guide wire is connected with the head end of the hook, and the handle is disposed at the top end of the slide bar.
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