WO2020186839A1 - 一种医用多爪钳 - Google Patents

一种医用多爪钳 Download PDF

Info

Publication number
WO2020186839A1
WO2020186839A1 PCT/CN2019/125023 CN2019125023W WO2020186839A1 WO 2020186839 A1 WO2020186839 A1 WO 2020186839A1 CN 2019125023 W CN2019125023 W CN 2019125023W WO 2020186839 A1 WO2020186839 A1 WO 2020186839A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
forceps
arm
buckle
pliers
Prior art date
Application number
PCT/CN2019/125023
Other languages
English (en)
French (fr)
Inventor
唐志
范茗侨
冷德嵘
李常青
刘春俊
Original Assignee
南微医学科技股份有限公司
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 南微医学科技股份有限公司 filed Critical 南微医学科技股份有限公司
Publication of WO2020186839A1 publication Critical patent/WO2020186839A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • 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
    • A61B17/128—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 applying or removing clamps or clips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery

Definitions

  • This application relates to the technical field of medical devices, and in particular to a medical multi-jaw forceps.
  • the difficult bleeding site is often targeted at the difficult bleeding site in human physiological bending because the position is very limited.
  • the opening width of the existing product after reaching the diseased site is limited, usually 11mm.
  • the endoscopist needs to perform purse-string sutures, that is, a circular plastic ring is first rotated, and then the existing small opening pliers or clamps are placed along the plastic ring around the wound in a dense pile method. , And finally use the special release hook of the plastic ring to hook the tail of the ring to tighten the plastic ring.
  • the present application provides a medical multi-jaw forceps to solve the shortcomings of the prior art and solve the problems of long operation time, low success rate and large number of instruments used in the suture of large wounds directly with forceps.
  • the present application provides a medical multi-jaw forceps, including: forceps, including at least two forceps arms, which can be opened and closed respectively, the forceps arms are provided with a locking sliding groove, and the sliding groove has a protrusion for locking unit;
  • the connecting tube includes a distal side, a middle part and a proximal side.
  • the distal side is provided with a fixed rigid forceps arm, and the proximal side is provided with a detachable connection convex and concave part or a hole.
  • the middle part of the connecting tube The position is provided with a restraining part that is locked with the pliers arm;
  • the pull cable includes at least two pull cables for respectively controlling the opening and closing of a single forceps arm, and the end of the pull cable has a joint that can be detachably connected to the proximal end of the forceps arm;
  • the buckle is detachably connected with the connecting pipe, and the buckle is provided with a plurality of laterally extending protrusions, the protrusions are combined with the connecting pipe, and can be connected with the connecting pipe under the tension of the cable Pipe separation
  • a spring tube a cylindrical tube sheath surrounding the cable, the end of the spring tube also has convex and concave parts, which can be detachably connected to the connecting tube through the convex and concave parts;
  • the handle is connected to the cable for applying force to the cable, and at least two sliders are provided on the handle to control the cable, move and release the pliers assembly.
  • the sliding groove on the pliers arm is a multi-section sliding groove to realize the opening and closing and pre-closing of the pliers arm;
  • the proximal end of the pliers arm is provided with a connecting piece connected with the cable, the connecting piece is a hole or a shaft, the connecting piece can transmit the opening and closing connecting force, and is separated from the cable under a certain pulling force of the cable.
  • the distal end of the connecting tube is provided with an inwardly protruding part, and the protruding part can be matched with the hole position of the forceps arm to realize the opening and closing of the forceps arm;
  • the constraining part of the connecting tube can be It is matched with the proximal end of the pliers arm to realize the locking of the pliers arm;
  • the proximal side of the connecting tube has convex and concave parts or holes, which can be detachably connected with the buckle.
  • the buckle has a plurality of protruding parts arranged in a circumferential direction, the protruding parts are combined with the connecting tube and the spring tube, and any part of the buckle is simultaneously combined with the cable for pulling Under the action of tension on the cable, the buckle deforms and breaks away from the connecting tube and the spring tube.
  • the bonding area between the buckle and the connecting tube and the spring tube is a clearance fit to ensure that the connecting tube and the spring tube are smoothly separated after the buckle is separated.
  • the end surface of the spring tube is provided with convex and concave portions or holes connected with the buckle;
  • the head of the spring tube is provided with a step portion that can rotate 360 degrees, and the fit between the buckle and the step portion is Clearance fit to ensure that the spring tube and the buckle can rotate relatively flexibly.
  • the cable has a distal protrusion, and the distal protrusion can be detachably connected with the forceps arm. Under the action of a preset pulling force, the cable is deformed or broken, and it is connected to the forceps arm. Separate.
  • the present application provides a medical multi-jaw forceps for hemostasis and tissue suture of the digestive tract guided by an endoscope.
  • the multi-jaw forceps includes a plurality of forceps arms that can be relatively opened and closed respectively to To achieve tissue traction on large wounds, compared to traditional pliers or clips with fixed opening sizes, it can be applied to larger wounds. Because of its simple structure, easy manufacture, low cost, repeated opening and closing, fewer parts, low cost, and easy operation , Easy to release, so it can shorten the operation time, increase the success rate of the operation and reduce the number of surgical instruments used.
  • Figure 1 is a schematic diagram of the overall structure of a medical multi-jaw forceps according to this application;
  • Figure 2 is a schematic diagram of the structure of the pliers arm of the application
  • Figure 3 is a schematic diagram of the connecting pipe structure of the application.
  • Figure 4 is a schematic diagram of the structure of the buckle of the application.
  • Figure 5 is a schematic diagram of the structure of the cable of the application.
  • Figure 6 is a schematic structural diagram of the clamp arms on both sides of the application in a closed but not locked state
  • Fig. 7 is a structural schematic diagram of the sliding groove and the protruding part of the pliers arm in the closed and locked state of the application;
  • FIG. 8 is a schematic diagram of the structure in which the pliers arm of the application is in a closed and locked state and the cable is separated from other parts;
  • Figure 9 is a schematic diagram of the upper and lower double-layer combined structure of the elastic forceps arm of the application.
  • Fig. 10 is a schematic diagram showing the staggered arrangement of elastic pliers arms of the application.
  • this application discloses a medical multi-jaw forceps, which can respectively close the control of the forceps arms, so as to first clamp the tissue on one side of the 50mm large wound, and then move the endoscope to the other side of the large wound.
  • the medical multi-jaw pliers includes a pliers arm 1, a connecting tube 2, a buckle 3, a spring tube 4, a cable 5, and a handle 6, so that the handle 6 can be applied with axial thrust and tension.
  • the driving cable 5 realizes the opening and closing of the forceps arm 1 and the locking of the forceps arm 1, and the forceps arm 1 and the connecting tube 2 can be separated from the spring tube 4 very easily to retain the human body to achieve the functions of hemostasis and tissue suture.
  • the forceps arm 1 has multiple sliding grooves to realize the opening and closing and pre-closing of the forceps arm 1.
  • the proximal end of the pliers arm 1 has a hole or shaft connected to the cable 5, the hole or shaft can separate the pliers arm 1 from the cable 5 under the action of a certain pulling force of the cable 5, but has the connection required for normal opening and closing force.
  • the connecting tube 2 has a distal end protruding inward, which can be matched with the hole position of the forceps arm 1 to realize the opening and closing of the forceps arm 1; the middle end has a restraining part which can be matched with the proximal end of the forceps arm to realize Locking of the pliers arm 1.
  • the proximal end has convex and concave parts or holes, which can be detachably engaged with the buckle 3.
  • the buckle 3 has a plurality of protrusions 3.1 in the circumferential direction.
  • the protrusions 3.1 can be combined with the connecting tube 2 and the spring tube 4, and any part of it can be combined with the cable 5 at the same time.
  • the buckle 3 is deformed under the action of the tension force of the cable 5 to separate the connecting tube 2 and the spring tube 4, so as to realize the effective separation of the connecting tube 2 and the spring tube 4.
  • the joint part of the buckle 3 and the connecting tube 2 and the spring tube 4 is a clearance fit to ensure that the connecting tube 2 and the spring tube 4 can be separated smoothly after the buckle 3 is separated.
  • the spring tube 4 has convex and concave portions or holes on the end surface, and the convex and concave portions or holes are connected with the claws of the buckle 3.
  • the head of the spring tube 4 has a step portion that can rotate relative to 360 degrees, and the fit is a clearance fit to ensure relatively flexible rotation.
  • the cable 5 has a distal protrusion.
  • the distal protrusion can be detachably connected to the pliers arm 1 in any shape. Under certain tension, the cable 5 is deformed or broken and the pliers arm 1 The tail is separated.
  • the medical multi-jaw pliers disclosed in the present application can drive the cable 5 to open and close the pliers arm 1 and lock the pliers arm 1 when the handle 6 exerts axial thrust and tension.
  • the forceps arm 1 and the connecting pipe 2 can be separated from the holder assembly.
  • control parts on the handle 6 that can control the cable 5 to drive any arm of the forceps arm 1 to rotate relative to the fixed forceps arm fixed on the connecting tube 2, so as to realize unilateral closure and clamping of the unilateral tissue of the large wound. Then move the endoscope to the other side and repeat the above method to close the other side of the forceps arm to clamp the other side of the tissue, and finally to achieve the tissue on both sides of the large wound.
  • the pliers arm 1 has a multi-segment chute at the initial point 1.1.
  • the protrusion 2.1 of the connecting pipe 2 is matched. Because it is a transitional fit between the hole and the shaft in the mechanical design, the protrusion between the initial point 1.1 and the locking point 1.2 is forced to deform to allow the protrusion 2.1 (or It is the pin shaft) over the narrow protrusion to reach the locking point.
  • the connecting tube 2 has a distal end inwardly protruding part 2.1, which can be matched with the hole position of the forceps arm 1 to realize the opening and closing of the forceps arm 1.
  • the middle end of the connecting pipe 2 has an avoiding part 2.4 and a locking part 2.2.
  • Figure 6, Figure 7, Figure 8 when the shaft 1.3 is combined with the locking portion 2.2, the pliers arm 1 can be locked; its proximal end has a convex and concave portion or a hole 2.3, which can be combined with the buckle 3
  • the protrusion 3.1 is detachably engaged.
  • the buckle 3 has a plurality of protruding parts 3.1 in the circumferential direction, and the plurality of protruding parts 3.1 are fixed together, and a mounting hole 3.2 is provided in the middle position to connect the cable 5.
  • the protruding part 3.1 can be combined with the connecting pipe hole 2.3 and the spring tube hole. Any part of the buckle 3 is combined with the cable 5 at the same time. Under the pulling force of the cable 5, the buckle 3 will be deformed.
  • the connecting tube 2 and the spring tube 4 are separated to realize the effective separation of the connecting tube 2 and the spring tube 4.
  • the buckle 3 can also be a V-shaped steel wire with claws arranged on the cable or connected to the cable in any manner.
  • the spring tube 4 has convex and concave portions or holes on the end surface, and the convex and concave portions or holes are connected with the claw portion 3.3 of the buckle 3.
  • the cable 5 has a distal protrusion 5.2.
  • the distal protrusion can be in any shape 5.1 and is detachably connected to the forceps arm 1. When subjected to a certain tension, the cable 5 is deformed or broken and separates from the tail of the forceps arm 1. Specifically, it may be that any position of the cable 5 has its own tapered weak point that will break and separate under a certain force.
  • the present application can be composed of pliers arms with elastic deformation, which can be distributed up and down, and the cable 5 can control the two pliers arms to open and close respectively, as described above
  • the principle is the same, using elastic deformation to open naturally to achieve repeatable opening and closing.
  • the present application can be composed of elastically deformable pliers arms, which can be distributed left and right.
  • the cable 5 can control the two pliers arms to open and close respectively, as follows The principle is the same, using elastic deformation to open naturally to achieve repeatable opening and closing. When it is determined that it needs to be released, the cable 5 is disconnected from the clamp arm in any way and the human body is retained.
  • the present application provides a medical multi-jaw forceps for hemostasis and tissue suture of the digestive tract guided by an endoscope.
  • the multi-jaw forceps includes a plurality of forceps arms that can be relatively opened and closed respectively to To achieve tissue traction on large wounds, compared to traditional pliers or clips with fixed opening sizes, it can be applied to larger wounds. Because of its simple structure, easy manufacture, low cost, repeated opening and closing, fewer parts, low cost, and easy operation , Easy to release, so it can shorten the operation time, increase the success rate of the operation and reduce the number of surgical instruments used.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Ophthalmology & Optometry (AREA)
  • Reproductive Health (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

一种医用多爪钳，用于消化道通过内窥镜引导下止血与组织缝合，该多爪钳包括多个钳子臂(1)，多个钳子臂(1)可以分别相对张开与闭合，以实现大创面的组织牵拉，相对于传统固定开口尺寸的钳子或夹子能够应用于更大的创面，由于其结构简单，易于制造，成本低廉，可以实现重复开闭，零件少，容易操作，便于释放。因此可以缩短手术时间、提高手术成功率以及减少手术器械的使用数量。

Description

一种医用多爪钳
本申请要求在2019年03月21日提交中国专利局、申请号为201910218952.3、发明名称为“一种医用多爪钳”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及医疗器械技术领域，尤其涉及一种医用多爪钳。
背景技术
近年来消化内镜治疗技术发展迅猛，消化道病变检出率越来越高，消化道出血越来越多，通过消化内镜技术治疗方案也越来越多。内镜下EMR(内镜下黏膜切除术)与ESD(内镜下黏膜剥离术)针对早期癌变的治愈率越来越高，早发现，早治疗已经成为行业的发展方向。由于中国相比日本等内镜应用的发达国家相比，引用时间晚，普查率低等现实问题，在实际治疗过程中仍然存在中期检查出现较大病变部位(如间质瘤>50cm)需要完整切除。现有ESD内镜技术已经可以进行安全、完整地剥离并切除，但术后这种大创面需要及时缝合，否则对于患者术后恢复有严重不良影响。
因内镜下操作空间小、通过内镜的工作腔道小，在人体生理弯曲中针对困难的出血部位往往因为位置很极限现有产品到达病变部位后张开的开口宽度有限，通常在11mm，对于50mm的超大创面现有产品无能为力，内镜医生需要进行荷包缝合，即先旋置一个环形的塑料圈，再沿着创面周边的塑料圈密积地打桩方式放置现有小开口的钳子或夹子，最后再用塑料圈专用的释放器钩子勾住圈的尾部收紧塑料圈。
由于钳子或夹子是同时钳住塑料圈线与创面组织，收紧圈时所有钳子与夹子一并收拢，可以把50mm的大创面缝合。但是此方法操作复杂、手术时间长、在收紧圈时钳子或夹子头部会翻转从而陷在创面里不利于术后自然脱落。往往内镜医师会非常头疼地小心操作收紧圈的动作，如有翻转时再次打开圈用其它器械拨正钳子或夹子头部后再收紧，故而手术时间再度延长，并且成功率进一步降低。
发明内容
本申请提供了一种医用多爪钳，以解决的针对现有技术的不足，解决直接用钳子进行大创面的缝合术，手术时间长、成功率低以及器械使用数量多的问题。
本申请提供一种医用多爪钳，包括：钳子，包含至少两个钳子臂，可分别实现张开及闭合，钳子臂上具有锁紧的滑槽，滑槽上具有用于锁紧的凸出部；
连接管，包括远端侧、中间部与近端侧，所述远端侧设有固定的钢性钳臂，近端侧设有可分离连接的凸凹部或孔部，所述连接管的中部位置设有与钳子臂锁紧的约束部；
拉索，包括至少两根拉索，用于分别控制单个钳子臂张开及闭合，所述拉索端部具有可与钳子臂近端可分离连接的结合部；
卡扣，与连接管可分离地连接，所述卡扣上设有侧向延伸的多个凸出部，所述凸出部 与连接管相结合，在拉索受拉作用力下可与连接管分离；
弹簧管，围绕拉索的圆柱形管鞘，弹簧管端部也具有凸凹部，通过凸凹部可与所述连接管可分离地连接；
手柄，连接到拉索，用于对拉索施加作用力，手柄上具有至少两个滑块以分别控制拉索，移动及释放钳子组件。
可选的，所述钳子臂上的滑槽为多段滑槽，以实现钳子臂的开闭及预闭合；
所述钳子臂近端具有与拉索相连的连接件，所述连接件为孔或轴，所述连接件可以传递开闭连接力，并且在拉索一定拉力作用下与所述拉索分离。
可选的，所述连接管远端侧设有向内的凸出部，所述凸出部可与钳子臂孔位配合，以实现钳子臂的开闭；所述连接管的约束部，可与钳子臂近端配合，以实现钳子臂的锁紧；所述连接管的近端侧具有凸凹部或孔部，可与卡扣可分离的连接。
可选的，所述卡扣具有圆周方向排列的多个凸出部，所述凸出部与连接管及弹簧管相结合，所述卡扣的任意部位同时与拉索相结合，以在拉索受拉力作用下，卡扣产生形变脱离连接管与弹簧管。
可选的，所述卡扣与所述连接管、弹簧管之间的结合区域为间隙配合，以确保所述卡扣分离后，连接管与弹簧管顺利分离。
可选的，所述弹簧管端面设有与卡扣连接的凸凹部或孔部；所述弹簧管的头部设有可360度旋转的台阶部，所述卡扣与台阶部的配合处是间隙配合，以确保弹簧管与卡扣能相对灵活转动。
可选的，所述拉索具有远端凸出部，所述远端凸出部可以与钳子臂可分离地连接，在受到预设拉力的作用下，拉索产生变形或断裂，与钳子臂分离。
由以上技术方案可知，本申请提供一种医用多爪钳，用于消化道通过内窥镜引导下止血与组织缝合，所述多爪钳包括多个钳臂可以分别相对张开与闭合，以实现大创面的组织牵拉，相对于传统固定开口尺寸的钳子或夹子能够应用于更大的创面，由于其结构简单，易于制造、成本低廉，可以实现重复开闭、零件少成本低、容易操作、便于释放，因此可以缩短手术时间、提高手术成功率以及减少手术器械的使用数量。
附图说明
图1为本申请一种医用多爪钳总体结构示意图；
图2为本申请钳子臂结构示意图；
图3为本申请连接管结构示意图；
图4为本申请卡扣的结构示意图；
图5为本申请拉索的结构示意图；
图6为本申请两侧的钳臂闭合但未锁紧状态结构示意图；
图7为本申请钳子臂闭合锁止状态滑槽与凸出部的结构示意图；
图8为本申请钳子臂闭合锁紧状态拉索与其它件分离的结构示意图；
图9为本申请弹性钳臂上下双层组合结构示意图；
图10为本申请弹性钳臂交错排布的结构示意图。
具体实施方式
下面将详细地对实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下实施例中描述的实施方式并不代表与本申请相一致的所有实施方式。仅是与权利要求书中所详述的、本申请的一些方面相一致的***和方法的示例。
为了解决上述技术问题，本申请公开了一种医用多爪钳，可以分别闭合钳臂的控制，实现先钳住50mm大创面一侧组织，再通过移动内镜到达大创面对面钳住另一侧组织，从而把一个直径为50mm的创面通过最大直径的两点来缩小创面，再在相对较大区域用同样方法把创面缩小，最后用常规的钳子或夹子实现小创面的缝合。
如图1所示，所述一种医用多爪钳包括钳子臂1、连接管2、卡扣3、弹簧管4、拉索5、手柄6，以实现在手柄6施加轴向推力和拉力可以驱动拉索5实现钳子臂1的开闭、钳子臂1的锁紧、钳子臂1与连接管2能非常容易地从弹簧管4分离而滞留人体达到止血与组织缝合的功能。
具体的，如图2所示，所述钳子臂1具有多段滑槽，以实现钳子臂1的开闭及预闭合。钳子臂1近端具有与拉索5相连的孔或轴，孔或轴可以在拉索5一定拉力的作用下使钳子臂1与所述拉索5分离，但是具有正常开闭所需的连接力。
如图3所示，连接管2具有远端向内凸出部，可以与钳子臂1孔位配合以实现钳子臂1的开闭；其中端具有约束部，可以与钳子臂近端配合以实现钳子臂1的锁紧。其近端具有凸凹部或孔部，可以与卡扣3可分离的接合。
如图4所示，卡扣3具有圆周方向的多个凸出部3.1，该凸出部3.1可以与连接管2及弹簧管4相结合，其任意部位同时与拉索5相结合，在拉索5受拉力作用下卡扣3产生形变从而脱离连接管2与弹簧管4，以实现连接管2与弹簧管4的有效分离。
进一步地，卡扣3与所述连接管2、弹簧管4结合部是间隙配合，以确保该卡扣3分离后连接管2可与弹簧管4顺利分离。弹簧管4具有端面凸凹部或孔部，所述凸凹部或孔部与卡扣3的爪部连接。
所述弹簧管4头部具有可相对360度旋转的台阶部，该配合是间隙配合，以确保能相对灵活转动。
如图5所示，拉索5具有远端凸出部，远端凸出部可以呈任意形状与钳子臂1可分离地连接，在受一定拉力作用下拉索5产生变形或断裂与钳子臂1尾部分离。
实际应用中，如图1所示，本申请公开的一种医用多爪钳，当手柄6施加轴向推力和拉力可以驱动拉索5实现钳子臂1的开闭、钳子臂1的锁紧、钳子臂1与连接管2能从保持器组件分离。
手柄6上具有两个控制部件可以分别控制拉索5带动钳子臂1任意一臂相对固定在连接管2上的固定钳臂转动，以实现可以单侧闭合钳住大创面的单侧组织，此时再移动内镜至另一侧重复操作上述方法关闭另一侧钳臂以实现夹住另一侧组织，最终实现把大创面两侧组织收拢在一起。
钳子臂1具有多段滑槽在初始点1.1位置时钳子臂1未处于锁紧状态，可以任意重复开闭，当操作者确定操作无误时需要分离钳子滞留人体时只需再次用力，钳子臂1与连接管2的凸出部2.1配合，由于是机械设计中孔与轴的过渡配合，迫使初始点1.1与锁紧点1.2间的凸出部变形以让连接管2中的凸出部2.1(或是销轴)越过狭窄凸出部到达锁紧 点。
本实施例中，如图1、图2所示，当未达到锁紧点1.2时，可以实现钳子臂1的开闭及预闭合；钳子臂1近端具有与拉索5相连的孔1.4或轴1.3，所述孔1.4或轴1.3可以在拉索5一定拉力作用下，使得钳子臂1与所述拉索5分离，但是具有正常开闭所需的连接力。
如图3所示，连接管2具有远端向内凸出部2.1，可以与钳子臂1孔位配合以实现钳子臂1的开闭。连接管2的中端具有避让部2.4及锁紧部2.2。如图6、图7、图8所示，当轴1.3与锁紧部2.2相结合时，可实现钳子臂1的锁紧；其近端具有凸凹部或孔部2.3，可以与卡扣3的凸出部3.1可分离的接合。
如图4所示，卡扣3具有圆周方向的多个凸出部3.1，多个凸出部3.1通过固定在一起，其中部位置设有安装孔3.2，以连接拉索5。凸出部3.1可以与连接管孔部2.3及弹簧管孔部相结合，卡扣3上的任意部位同时与拉索5相结合，在拉索5受拉力作用下，卡扣3会产生形变从而脱离连接管2与弹簧管4，以实现连接管2与弹簧管4的有效分离。卡扣3也可以是带爪的V形钢丝饶设在拉索上或与拉索任意方式连接。
弹簧管4具有端面凸凹部或孔部，所述凸凹部或孔部与卡扣3的爪部3.3连接。拉索5具有远端凸出部5.2，所述远端凸出部可以呈任意形状5.1与钳子臂1可分离地连接，在受一定拉力作用下拉索5产生变形或断裂与钳子臂1尾部分离，具体地，可以是拉索5任意位置具有自身渐细薄弱点在一定力下会断裂分离。
在本申请的另一个具体的实施案例，如图9所示，可以由具有弹性变形的钳臂构成，可以呈上下分布，拉索5可以分别控制两个钳臂实现张开与闭合，如上述原理一样利用弹性变形自然张开以实现可重复开闭，当确定需要释放时拉索5与钳臂任意方式断开而滞留人体。
在本申请的另一个具体的实施案例，如图10所示，可以由具有弹性变形的钳臂构成，可以呈左右分布，拉索5可以分别控制两个钳臂实现张开与闭合，如下述原理一样利用弹性变形自然张开以实现可重复开闭，当确定需要释放时拉索5与钳臂任意方式断开而滞留人体。
由以上技术方案可知，本申请提供一种医用多爪钳，用于消化道通过内窥镜引导下止血与组织缝合，所述多爪钳包括多个钳臂可以分别相对张开与闭合，以实现大创面的组织牵拉，相对于传统固定开口尺寸的钳子或夹子能够应用于更大的创面，由于其结构简单，易于制造、成本低廉，可以实现重复开闭、零件少成本低、容易操作、便于释放，因此可以缩短手术时间、提高手术成功率以及减少手术器械的使用数量。
本申请提供的实施例之间的相似部分相互参见即可，以上提供的具体实施方式只是本申请总的构思下的几个示例，并不构成本申请保护范围的限定。对于本领域的技术人员而言，在不付出创造性劳动的前提下依据本申请方案所扩展出的任何其他实施方式都属于本申请的保护范围。

Claims (7)

  1. 一种医用多爪钳，其特征在于，包括：
    钳子，包含至少两个钳子臂，可分别实现张开及闭合，钳子臂上具有锁紧的滑槽，滑槽上具有用于锁紧的凸出部；
    连接管，包括远端侧、中间部与近端侧，所述远端侧设有固定的钢性钳臂，近端侧设有可分离连接的凸凹部或孔部，连接管的中部位置设有与钳子臂锁紧的约束部；
    拉索，包括至少两根拉索，用于分别控制单个钳子臂张开及闭合，所述拉索端部具有可与钳子臂近端可分离连接的结合部；
    卡扣，与连接管可分离地连接，所述卡扣上设有侧向延伸的多个凸出部，所述凸出部与连接管相结合，在拉索受拉作用力下可与连接管分离；
    弹簧管，围绕拉索的圆柱形管鞘，弹簧管端部也具有凸凹部，通过凸凹部可与所述连接管可分离地连接；
    手柄，连接到拉索，用于对拉索施加作用力，手柄上具有至少两个滑块以分别控制拉索，移动及释放钳子组件。
  2. 如权利要求1所述的医用多爪钳，其特征在于，所述钳子臂上的滑槽为多段滑槽，以实现钳子臂的开闭及预闭合；
    所述钳子臂近端具有与拉索相连的连接件，所述连接件为孔或轴，所述连接件可以传递开闭连接力，并且在拉索一定拉力作用下与所述拉索分离。
  3. 如权利要求1所述的医用多爪钳，其特征在于，所述连接管远端侧设有向内的凸出部，所述凸出部可与钳子臂孔位配合，以实现钳子臂的开闭；所述连接管的约束部，可与钳子臂近端配合，以实现钳子臂的锁紧；所述连接管的近端侧具有凸凹部或孔部，可与卡扣可分离的连接。
  4. 如权利要求1所述的医用多爪钳，其特征在于，所述卡扣具有圆周方向排列的多个凸出部，所述凸出部与连接管及弹簧管相结合，所述卡扣的任意部位同时与拉索相结合，以在拉索受拉力作用下，卡扣产生形变脱离连接管与弹簧管。
  5. 如权利要求1所述的医用多爪钳，其特征在于，所述卡扣与所述连接管、弹簧管之间的结合区域为间隙配合，以确保所述卡扣分离后，连接管与弹簧管顺利分离。
  6. 如权利要求1所述的医用多爪钳，其特征在于，所述弹簧管端面设有与卡扣连接的凸凹部或孔部；所述弹簧管的头部设有可360度旋转的台阶部，所述卡扣与台阶部的配合处是间隙配合。
  7. 如权利要求1所述的医用多爪钳，其特征在于，所述拉索具有远端凸出部，所述远端凸出部可以与钳子臂可分离地连接，在受到预设拉力的作用下，拉索产生变形或断裂，与钳子臂分离。
PCT/CN2019/125023 2019-03-21 2019-12-13 一种医用多爪钳 WO2020186839A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910218952.3 2019-03-21
CN201910218952.3A CN109805986A (zh) 2019-03-21 2019-03-21 一种医用多爪钳

Publications (1)

Publication Number Publication Date
WO2020186839A1 true WO2020186839A1 (zh) 2020-09-24

Family

ID=66609859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/125023 WO2020186839A1 (zh) 2019-03-21 2019-12-13 一种医用多爪钳

Country Status (2)

Country Link
CN (1) CN109805986A (zh)
WO (1) WO2020186839A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114983503A (zh) * 2022-05-26 2022-09-02 北京大学深圳医院 一种用于全层缝合的一次性活动舌双臂夹及其使用方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109805986A (zh) * 2019-03-21 2019-05-28 南京微创医学科技股份有限公司 一种医用多爪钳
CN109953800B (zh) * 2019-05-05 2023-10-10 南微医学科技股份有限公司 一种滑槽式多臂夹
CN110292411B (zh) * 2019-08-06 2024-04-16 南微医学科技股份有限公司 一种组织夹闭装置
CN112807049A (zh) * 2019-11-18 2021-05-18 微创优通医疗科技(嘉兴)有限公司 一种止血夹和辅助***
CN111436979B (zh) * 2020-04-07 2021-06-15 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 一种便于内镜下操作的转动调档装置以及手柄
CN111481304A (zh) * 2020-05-09 2020-08-04 南微医学科技股份有限公司 一种三臂夹

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103976771A (zh) * 2013-01-08 2014-08-13 柯惠Lp公司 手术施夹器
CN203828993U (zh) * 2014-05-23 2014-09-17 南京微创医学科技有限公司 一种止血夹
WO2015006083A1 (en) * 2013-07-10 2015-01-15 Boston Scientific Scimed, Inc. Tissue grasping and wound closing clipping device
CN104586444A (zh) * 2014-12-17 2015-05-06 中国人民解放军第一七五医院 一种用于闭合消化道穿孔的内镜抓钳
CN104605910A (zh) * 2015-01-23 2015-05-13 沈阳尚贤科技股份有限公司 一种夹合消化道内软组织的软组织夹
CN206239447U (zh) * 2016-08-31 2017-06-13 张龙 一种一次性使用可单臂开合的夹子
CN108523945A (zh) * 2018-05-07 2018-09-14 张强 可旋转可重复开闭连体双内镜夹
CN109009310A (zh) * 2018-06-07 2018-12-18 诸暨市鹏天医疗器械有限公司 一种内镜止血夹
CN109044474A (zh) * 2018-09-11 2018-12-21 南京微创医学科技股份有限公司 一种消化道用组织钳
CN109805986A (zh) * 2019-03-21 2019-05-28 南京微创医学科技股份有限公司 一种医用多爪钳

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109303589A (zh) * 2018-10-12 2019-02-05 南京微创医学科技股份有限公司 一种医用组织钳及其使用方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103976771A (zh) * 2013-01-08 2014-08-13 柯惠Lp公司 手术施夹器
WO2015006083A1 (en) * 2013-07-10 2015-01-15 Boston Scientific Scimed, Inc. Tissue grasping and wound closing clipping device
CN203828993U (zh) * 2014-05-23 2014-09-17 南京微创医学科技有限公司 一种止血夹
CN104586444A (zh) * 2014-12-17 2015-05-06 中国人民解放军第一七五医院 一种用于闭合消化道穿孔的内镜抓钳
CN104605910A (zh) * 2015-01-23 2015-05-13 沈阳尚贤科技股份有限公司 一种夹合消化道内软组织的软组织夹
CN206239447U (zh) * 2016-08-31 2017-06-13 张龙 一种一次性使用可单臂开合的夹子
CN108523945A (zh) * 2018-05-07 2018-09-14 张强 可旋转可重复开闭连体双内镜夹
CN109009310A (zh) * 2018-06-07 2018-12-18 诸暨市鹏天医疗器械有限公司 一种内镜止血夹
CN109044474A (zh) * 2018-09-11 2018-12-21 南京微创医学科技股份有限公司 一种消化道用组织钳
CN109805986A (zh) * 2019-03-21 2019-05-28 南京微创医学科技股份有限公司 一种医用多爪钳

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114983503A (zh) * 2022-05-26 2022-09-02 北京大学深圳医院 一种用于全层缝合的一次性活动舌双臂夹及其使用方法

Also Published As

Publication number Publication date
CN109805986A (zh) 2019-05-28

Similar Documents

Publication Publication Date Title
WO2020186839A1 (zh) 一种医用多爪钳
US20230404583A1 (en) Devices for approximating tissue and related methods of use
CN109953800B (zh) 一种滑槽式多臂夹
CN109805977B (zh) 一种医用止血夹
EP3081174B1 (en) Hemostatic clip
US5906620A (en) Surgical cauterization snare with ligating suture
US11350947B2 (en) Ligation device, unlocking method and ligation instrument
JP7315638B2 (ja) 組織を引き込む為の装置および方法
CN113853166A (zh) 组织牵引带
KR101793631B1 (ko) 내시경용 처치구 장치
CN210631277U (zh) 一种医用多爪钳
CN210277289U (zh) 一种滑槽式多臂夹
US20230014853A1 (en) Hemostasis clip short system
US20220395277A1 (en) Hemostatic clip and auxiliary system
US20220015787A1 (en) Grasping Device For Independent Tissue Manipulation During Gastrointestinal Endoscopic Procedures And Methods Of Use
JP5827797B2 (ja) 一対の内視鏡用クリップユニット
US20240197320A1 (en) Reverse anastomosis closure clip
CN114587486B (zh) 一种内窥镜用增强固定双臂吻合夹器械
CN114587446B (zh) 一种端部执行器械及操作方法
US20240138836A1 (en) Surgical clip and deployment system
CN217566162U (zh) 一种医用闭合夹
CN211325240U (zh) 一种辅助牵拉装置和辅助***
CN117915845A (zh) 夹头式可部署止血夹
WO2023022811A1 (en) Over the scope clip with compliant mechanism
CN112674813A (zh) 一种辅助牵拉装置和辅助***

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19920306

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19920306

Country of ref document: EP

Kind code of ref document: A1