CN105640626A - Medical needle tensioner - Google Patents

Medical needle tensioner Download PDF

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Publication number
CN105640626A
CN105640626A CN201510965744.1A CN201510965744A CN105640626A CN 105640626 A CN105640626 A CN 105640626A CN 201510965744 A CN201510965744 A CN 201510965744A CN 105640626 A CN105640626 A CN 105640626A
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CN
China
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provided
needle
medical needle
front
hole
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CN201510965744.1A
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Chinese (zh)
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CN105640626B (en
Inventor
朱健
彭爱民
郑学建
朱正勤
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张家港市亚堤仕医疗咨询管理有限公司
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Priority to CN201510965744.1A priority Critical patent/CN105640626B/en
Publication of CN105640626A publication Critical patent/CN105640626A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/60Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
    • A61B17/62Ring frames, i.e. devices extending around the bones to be positioned
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564Methods for bone or joint treatment

Abstract

The invention discloses a medical needle tensioner. A fixed seat is internally provided with a first threaded hole and a first inner cavity which are communicated from front to back in sequence, a guide needle mouth provided with a guide needle hole is arranged in the first threaded hole, and a sliding seat is arranged in the first inner cavity and can move front and back in the first inner cavity under driving of a driving mechanism; the sliding seat is internally provided with a cone-shaped through hole, a second inner cavity and a second threaded hole which are communicated from front to back in sequence, a spring pressing screw is arranged in the second threaded hole, a claw jacking rod is arranged in the second inner cavity, a compressed spring is arranged between the claw jacking rod and the spring pressing screw, multiple clamping claws are arranged in the cone-shaped through hole, the clamping claws jointly form a needle clamping gap which allows a medical needle to pass through and is communicated with the needle guide hole in an enclosing mode, and under the action of the compressed spring, a trend that the claw jacking rod forwards pushes the clamping claws to abut against the needle guide mouth is achieved. The medical needle tensioner has the advantages that the structure is simple, the size is small, the cost is low, tensioning operation on the medical needle can be conducted by one hand, operation is very convenient, and the tensioning effect on the medical needle is good.

Description

医用针张紧器 Medical needle tensioner

技术领域 FIELD

[0001]本发明涉及骨科医疗器械领域,具体涉及一种能方便地将医用针张紧的医用针张紧器。 [0001] The present invention relates to orthopedic medical device, and in particular, to a medical needle can be easily tensioned medical needle tensioner.

背景技术 Background technique

[0002]医用针(例如:克氏针)是常用的一种骨科医疗器械,其主要与洞孔环式骨外固定器配合使用,用以固定骨骼或软组织,促进骨骼或软组织愈合,为避免医用针在骨骼或软组织中发生晃动而使软组织发生感染的情况发生,医用针在固定时需处于张紧状态,目前手术时主要通过夹钳来张紧医用针。 [0002] The medical needle (e.g.: Kirschner) is commonly used orthopedic medical device, and the main hole ring with external fixator used to fix bones or soft tissue, bone or soft tissue to promote healing, to avoid shaking the occurrence of soft tissue infections occur medical needle in the bone or soft tissues occurs, the medical needle at a fixed tension is required, mainly through the medical needle when the tensioning clamp current operation. 医用针安装于洞孔环式骨外固定器的具体过程是:先安装好洞孔环式骨外固定器,接着将医用针穿过骨骼或软组织,然后用钢针固定夹将医用针的一端固定在洞孔环的一端,再用夹钳夹住医用针的另一端,接着往外拉紧夹钳以张紧医用针,然后再通过钢针固定夹将医用针的另一端固定在洞孔环的另一端。 Attached to the medical needle procedure the specific hole ring external fixation are: first installing hole ring external fixator, then the medical needle through the soft tissue or bone, and then one end of the needle retaining clips medical needle fixed at one end of the ring hole, and then the other end of the clamping jaw medical needle, and then outwardly to tension the tensioning clamps medical needle, needle and then through the retaining clip of the other end is fixed to the medical needle hole ring at the other end. 上述医用针的张紧方式存在以下缺点:医生需要用双手才能进行张紧操作,不仅费时费力、十分繁琐,而且操作中难以使医用针始终保持张紧状态,造成医用针的张紧效果差,容易导致医用针在骨骼或软组织中发生晃动而使软组织发生感染,最终影响到患者的康复效果。 The following disadvantages of the medical needle tension way: doctors need to be tensioned by both hands, not only time consuming, very cumbersome and difficult to operate the medical needle always maintain tension, the tension caused by the effect of poor medical needles, easily lead to medical needles occurs in the bone or soft tissue shaking the soft tissue infection, and ultimately affect the rehabilitation of patients.

发明内容 SUMMARY

[0003]本发明的目的是提供一种操作更方便、且能使医用针的张紧效果更好地的医用针张紧器。 [0003] The object of the present invention is to provide a more convenient operation, and the medical needle can better tensioning of the medical needle tensioner.

[0004]为实现上述目的,本发明采用了如下技术方案:所述的医用针张紧器,其特征在于:包括固定座、导针嘴及滑动座,在固定座的前后两端分别设置有安装口,在固定座中设置有与其后端安装口相连通的第一内腔、以及连通其前端安装口与第一内腔的第一螺纹孔,所述导针嘴设置在第一螺纹孔中而与固定座相固定,在导针嘴中设置有前后贯通导针嘴且允许医用针穿过的导针孔,所述滑动座从固定座后端的安装口活动插入固定座的第一内腔,滑动座在驱动机构的驱动下能在第一内腔中前后移动,在滑动座的前后两端也分别设置有安装口,在滑动座中设置有第二内腔、用以连通滑动座前端安装口与第二内腔的锥形通孔、以及用以连通滑动座后端安装口与第二内腔的第二螺纹孔,在第二螺纹孔中设置有压簧螺钉,在第二内腔中活动设置有顶爪杆,在顶爪 [0004] To achieve the above object, the present invention employs the following technical solution: the medical needle tensioner characterized by: a holder, the needle tip guiding and sliding seat, in the front and rear ends are respectively provided with holder mounting opening, is provided with a port and its rear end is mounted a first lumen in communication, and a communication port and which is attached to the end of the first threaded hole in the holder in a first lumen, the first guide screw hole provided in the nozzle needle in phase with the holder fixed guide pin disposed through the front lips of the nozzle needle guide and guide pin holes allow the medical needle therethrough, said first sliding base from a rear end of the holder mounting opening of the holder is inserted activities chamber, the slide base is movable by the driving mechanism in a first longitudinal lumen, the front and rear ends respectively of the slide base provided with a mounting opening, is provided with a sliding seat in the second lumen for communicating with the slide base the front end of the tapered through-hole mounting of the second lumen port, and the second threaded hole for communicating the rear end of the sliding seat mounting opening and a second lumen disposed in the second compression spring screw threaded hole in the second activity lumen is provided with a pawl lever top, the top jaw 与压簧螺钉之间设置有压簧,压簧使得顶爪杆与压簧螺钉始终具有相互远离的趋势,在锥形通孔中设置有若干卡爪,每个卡爪的外壁为能与锥形通孔的内壁相配合的、由前至后逐渐向外倾斜的斜面,所有卡爪能共同围成一个允许医用针穿过且与导针孔相连通的夹针孔隙,所述顶爪杆在压簧的弹力作用下始终具有将各卡爪前推至抵着导针嘴的趋势;当滑动座在驱动机构的驱动下向后移动时,会带动锥形通孔沿着各卡爪的外壁斜面向后移动,同步推动各卡爪向内合拢,从而使各卡爪夹紧从导针孔伸入夹针孔隙的医用针,随着滑动座继续向后移动,滑动座中锥形通孔的内壁会继续箍紧各卡爪,并同步带动各卡爪、被各卡爪夹紧的医用针以及顶爪杆一起向后移动。 A compression spring disposed between the screw and the compression spring, so that the top of the pawl spring rod always has a tendency to spring away from each screw is provided in the tapered through-hole a number of jaws, each jaw of an outer wall of the taper can shaped inner wall of the through hole engaged by the outwardly inclined surface gradually inclined to front, all cooperatively define jaw can allow a medical needle through and communicating with the guide pin holes needle clamp aperture, the pawl lever top in the spring having a spring force always pushes the front of each claw to the guide pin against the trend nozzle; seat when the slide is moved backward by a drive mechanism, will lead to the tapered through hole of the latching pawl along moving rearwardly inclined surface of the outer wall, each of jaw synchronization push inwardly folded so that each of the clamping jaws from the clip projects into the guide pin holes needle aperture medical needle continues to move rearwardly as the seat slides, sliding on the tapered seat the inner wall of the hole will continue tightening the jaw pieces, the jaw pieces and entrainment, the clamped jaws each medical needle and the lever is moved backward together with the top jaws.

[0005]进一步地,前述的医用针张紧器,其中:所述的驱动机构的结构为:在固定座的侧壁上沿周向对称设置有一对连通第一内腔的开口,在每个开口中的滑动座侧壁上分别设置有一个拨叉头卡槽,在开口前侧的固定座的底部固定有前手柄,前手柄上通过铰合螺钉铰接有后手柄,在后手柄的顶部设置有呈U形的拨叉头,拨叉头的一对U形臂正好分别卡在滑动座侧壁上的一对拨叉头卡槽中,在前手柄与后手柄之间设置有使后手柄始终具有绕铰合螺钉向后转动趋势的弹性组件,当向前推压后手柄,使后手柄克服弹性组件的向后弹力绕铰合螺钉向前转动时,后手柄会带动其顶部的拨叉头绕铰合螺钉向后转动,向后转动的拨叉头通过拨叉头卡槽带动滑动座向后移动,当松开后手柄时,后手柄在弹性组件的向后弹力作用下绕铰合螺钉向后转动,后手柄会带动其顶部的 [0005] Further, the aforementioned medical needle tensioner, wherein: the structure of the driving mechanism for: a pair of circumferentially disposed first lumen communicating opening symmetrically on the holder side walls, each the opening in the side wall are provided with a sliding seat a fork head slot, at the bottom of the open front side of the fixing base is fixed to the front handle, the front handle is hinged by a hinge screw rear handle, the handle is provided at the top there are U-shaped fork head, the fork head just one pair of U-shaped arms are respectively engaged in the pair of sidewalls of the sliding seat fork head slot, between the front handle and rear handle after the handle is provided with a always has rotated about the hinge bolt rearward tendency elastic member, when the handle assembly against the resilient urging forwardly the handle after the elastic force backwards about the hinge screw is rotated forward, the handle will drive the top of the fork about the hinge bolt head is rotated backward, the backward rotation of the fork head sliding base driven by the fork head is moved backward slot, when the release handle, the handle about a hinge under spring force of the elastic assembly rearwardly backward rotation of the screw, the handle will drive the top thereof 拨叉头绕铰合螺钉而向前转动,向前转动的拨叉头通过拨叉头卡槽带动滑动座向前移动。 Fork head rotates about the hinge bolt forwardly, a forward rotation of the fork head driven sliding base slot by forward movement of the fork head.

[0006]进一步地,前述的医用针张紧器,其中:所述的弹性组件的结构为:包括下端固定于前手柄上的第一弧形弹片、以及下端固定于后手柄上的第二弧形弹片,第一弧形弹片的上端与第二弧形弹片的上端相固定后两者呈“入”形。 [0006] Further, the aforementioned medical needle tensioner, wherein: the structure of the elastic member is: fixed to the lower end comprising a first curved elastic plates on the front handle, and a second arc of the lower end fixed to a handle shaped leaf spring, the upper ends of the first and second arcuate resilient piece curved elastic plates fixed to both the shape of the "in" shape.

[0007]进一步地,前述的医用针张紧器,其中:在顶爪杆中设置有前后贯通顶爪杆且与夹针孔隙相连通的顶爪杆通孔。 [0007] Further, the aforementioned medical needle tensioner, wherein: a longitudinal through-top and the top of the safety catch pawl lever and the clamping pin through hole communicating pores in the top of the pawl lever.

[0008]进一步地,前述的医用针张紧器,其中:在压簧螺钉中设置有前后贯通压簧钉且能与顶爪杆通孔相连通的压簧螺钉通孔。 [0008] Further, the aforementioned medical needle tensioner, wherein: a compression spring disposed in the front and rear screws through the nail and can spring compression spring screw through hole communicating with the through hole is connected to the top pawl lever.

[0009]进一步地,前述的医用针张紧器,其中:各卡爪中构成夹针孔隙的内壁均设置有齿形纹。 [0009] Further, the aforementioned medical needle tensioner, wherein: each of the inner walls constituting the clamp jaws are provided with a needle aperture toothed pattern.

[0010]进一步地,前述的医用针张紧器,其中:所述顶爪杆的前端为由前向后逐渐向外倾斜的第一锥形斜面,各卡爪的后端设有能与第一锥形斜面配合接触的后端斜面。 [0010] Further, the aforementioned medical needle tensioner, wherein: a first tapered inclined surface gradually inclined rearwardly by the front distal end of the rod outwardly of said claw top, rear end of each jaw can be provided with the first a rear inclined surface in contact with the conical bevel.

[0011]进一步地,前述的医用针张紧器,其中:导针嘴的后端为由前向后逐渐向内倾斜的第二锥形斜面,各卡爪的前端设置有能与第二锥形斜面配合接触的前端斜面。 [0011] Further, the aforementioned medical needle tensioner, wherein: the rear end of the front guide pin tip rearwardly by progressively inwardly inclined second tapered inclined surface, the distal end of each jaw is provided with a second bevel can have beveled distal beveled mating contact.

[0012]进一步地,前述的医用针张紧器,其中:在顶爪杆的外壁上设置有定位凸肩,压簧的两端分别顶在定位凸肩与压簧螺钉上。 [0012] Further, the aforementioned medical needle tensioner, wherein: the top of the outer wall is provided with a pawl lever detent bead, spring ends are positioned on top of the shoulder screw and spring.

[0013]通过上述技术方案的实施,本发明具有的优点是:结构简单,体积小,成本低,能单手进行医用针的张紧操作,操作十分方便,并且对医用针的张紧效果好。 [0013] By the above-described aspect of the embodiment, the present invention has the advantage of: simple structure, small size, low cost, single-handed operation for tensioning medical needle, easy to operate, and good tensioning effect of the medical needle .

附图说明 BRIEF DESCRIPTION

[0014]图1为本发明所述的医用针张紧器的结构示意图。 [0014] FIG. 1 is a schematic structural diagram of the present invention, the medical needle tensioner.

[0015]图2为图1的左视方向的结构示意图。 Schematic [0015] FIG. 2 is a view of a left direction in FIG. 1 configuration.

[0016]图3为图2中所示AA剖面的结构示意图。 [0016] FIG. 3 is a schematic structural view of section AA in FIG. 2.

[0017]图4为图1的立体结构示意图。 [0017] FIG. 4 is a perspective schematic structural view of FIG. 1.

[0018]图5为图1中所不的固定座的结构不意图。 [0018] FIG. 5 is not a fixed base structure is not intended.

[0019]图6为图5的立体结构示意图。 [0019] FIG. 6 is a perspective schematic structural diagram of FIG.

[0020]图7为图1中所示的滑动座的结构示意图。 [0020] FIG. 7 is a schematic view of the slide base shown in FIG.

[0021]图8为图7的立体结构示意图。 [0021] FIG. 8 is a perspective schematic structural view of FIG.

[0022]图9为图1中所不的导针嘴的结构不意图。 [0022] FIG 9 is not a needle guide nozzle structure is not intended.

[0023]图10为图9的立体结构示意图。 [0023] FIG. 10 is a perspective schematic structural diagram of FIG.

[0024]图11为图3中所示的顶爪杆的结构示意图。 [0024] FIG. 11 is a schematic structural diagram of a top jaw 3 is shown in FIG.

[0025]图12为图11的立体结构示意图。 [0025] FIG. 12 is a perspective schematic structural diagram of Fig.

[0026]图13为图3中所示的卡爪的结构示意图。 [0026] FIG. 13 is a schematic view of the jaws shown in FIG. 3.

[0027]图14为图3中所示的压簧螺钉的结构示意图。 [0027] FIG. 14 is a schematic view of a screw compression spring 3 shown in FIG.

[0028]图15为图14的立体结构示意图。 [0028] FIG. 15 is a perspective schematic structural view of FIG. 14.

[0029]图16为图1中所示的医用针张紧器的使用状态示意图。 [0029] FIG. 16 is a view of the medical needle tensioner 1 shown in a schematic view of a use state.

具体实施方式 Detailed ways

[0030]下面结合附图和具体实施例对本发明作进一步说明。 [0030] conjunction with the accompanying drawings and the following specific embodiments of the present invention will be further described.

[0031] 如图1、图2、图3、图4、图5、图6、图7、图8、图9、图10、图11、图12、图13、图14、图15、 [0031] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,

图16所示,所述的医用针张紧器,包括固定座1、导针嘴2及滑动座3,在固定座I的前端设置有固定座前安装口4、后端设置有固定座后安装口5,在固定座I中设置有与固定座后安装口5相连通的第一内腔6、以及连通固定座前安装口4与第一内腔6的第一螺纹孔7,所述导针嘴2设置在第一螺纹孔7中而与固定座I相固定,在导针嘴2中设置有前后贯通导针嘴2且允许医用针8穿过的导针孔9,所述滑动座3从固定座后安装口5活动插入固定座I的第一内腔6,滑动座3在驱动机构的驱动下能在第一内腔6中前后移动,在滑动座的前端设置有滑动座前安装口10、后端设置有滑动座后安装口11,在滑动座3中设置有第二内腔12、用以连通滑动座前安装口10与第二内腔12的锥形通孔13、以及用以连通滑动座后安装口11与第二内腔12的第二螺纹孔14,在第二螺纹孔14中设置有压簧螺钉15,在第 After shown in FIG. 16, the medical needle tensioner comprising a fixed seat 1, the nozzle 2 and the guide pin sliding seat 3, the front holder has a mounting opening provided at a front end of the holder 4 I, provided with a rear end of the holder mounting opening 5, is provided with a rear holder is mounted to the first port 5 communicating lumen 6, and a mounting opening of the first lumen 4 of the first threaded hole 6 before the communication of the holder 7, the fixing base I, guide pin fixed to the nozzle 2 provided in the first relative threaded hole and the fixing base 7 I, provided with a longitudinal guide in the needle tip through the needle guide 2 to allow the nozzle 2 and the guide pin holes 8 through which medical needle 9, the slide 3 from the rear mounting seat holder 5 active port of the first lumen inserted into the holder 6 I, the slide base 3 is movable back and forth in the lumen 6 of the first driving mechanism, provided with a sliding seat in the front end of the slide base after mounting opening 10 before the mounting opening, the rear end of the slide is provided with a seat 11, arranged in the slide base 3 has a second lumen 12 for mounting the front communication opening 10 and the second base slide tapered lumen 13 through hole 12 and a sliding base is mounted to the communication opening 11 and the second screw hole 12 of the second lumen 14 is provided with a screw compression spring 14 in the second screw hole 15, the first 内腔12中活动设置有顶爪杆16,在顶爪杆16与压簧螺钉15之间设置有压簧18,压簧18使得顶爪杆16与压簧螺钉15始终具有相互远离的趋势,在锥形通孔13中设置有若干卡爪19,每个卡爪19的外壁为能与锥形通孔13的内壁相配合的、由前至后逐渐向外倾斜的卡爪外壁斜面31,所有卡爪19能共同围成允许医用针8穿过且与导针孔9相连通的夹针孔隙,所述顶爪杆16在压簧18的弹力作用下始终具有将各卡爪19前推至抵着导针嘴2的趋势;当滑动座3在驱动机构的驱动下向后移动时,会带动锥形通孔13沿着各卡爪19的卡爪外壁斜面31向后移动,同步推动各卡爪19向内合拢,从而使各卡爪19夹紧从导针孔9伸入夹针孔隙的医用针8,随着滑动座3继续向后移动,滑动座3中锥形通孔13的内壁会继续箍紧各卡爪19,并同步带动各卡爪19、被各卡爪19夹紧的医用针8以及顶爪杆16—起向后移动; Activity in the lumen 12 is provided with a top bar pawl 16, pawl lever 16 in the top 15 and the compression spring disposed between the screw compression spring 18, so that the top compression spring 18 pawl lever 16 and a screw compression spring 15 has a tendency to always away from each other, is provided with a plurality of claws 19, each jaw 19 of the outer wall to engage an inner wall of the through hole 13 is tapered in the tapered through-hole 13, gradually inclined from the front to the outer wall of the pawl outwardly inclined surface 31, all the jaws 19 can work together to enclose the medical needle to permit the clip and the needle 8 through the aperture 9 communicating guide pin holes, said top having a pawl lever 16 is always in the elastic force of the compression spring 18 will push the front of each pawl 19 to the guide pin against the tendency of the nozzle 2; when the slide base is moved backward by the driving mechanism 3, the through-hole 13 will drive the tapered outer wall of the inclined surface 19 of the pawl 31 moves backward along each jaw, the synchronous pushing each claw 19 folded inwardly so that each of the jaws 19 grip the needle 9 into the guide pin holes apertures from medical needle clamp 8, as the slide continues to move the seat 3 rearwardly, tapered sliding seat 3 a through hole 13 will continue tightening the inner wall of each jaw 19 and respective entrainment pawls 19, 19 are clamped to each jaw and a top jaw medical needle bar 8 is moved backward from 16-; 本实施例中,所述的驱动机构的结构为:在固定座I的侧壁上沿周向对称设置有一对连通第一内腔6的开口,在每个开口中的滑动座3侧壁上分别设置有一个拨叉头卡槽21,在开口前侧的固定座I的底部固定有前手柄22,前手柄22上通过铰合螺钉30铰接有后手柄23,在后手柄23的顶部设置有呈U形的拨叉头24,拨叉头24的一对U形臂正好分别卡在滑动座3侧壁上的一对拨叉头卡槽21中,在前手柄22与后手柄23之间设置有使后手柄23始终具有绕铰合螺钉30向后转动趋势的弹性组件,当向前推压后手柄23,使后手柄23克服弹性组件的向后弹力绕铰合螺钉30向前转动时,后手柄23会带动其顶部的拨叉头24绕铰合螺钉30向后转动,向后转动的拨叉头24通过拨叉头卡槽21带动滑动座3向后移动,当松开后手柄23时,后手柄23在弹性组件的向后弹力作用下绕铰合螺钉30向后转动,后手柄30会 In this embodiment, the structure of the driving mechanism is: circumferentially along the opening is provided with a pair of symmetrical first lumen 6 is in communication on the side wall of the holder I, the slide base 3 in the sidewall of each opening each fork head is provided with a slot 21, open at the bottom of the holder front side of the front I fixed handle 22, the front handle 22 by a hinge screw 30 is hinged to the handle 23, the handle 23 is provided at the top are U-shaped fork head 24, the U-shaped fork head just a pair of arms 24 are respectively engaged in the sliding seat 21 of the side wall 3, a pair of fork head slot, between the front and the rear handle 23 of the handle 22 is provided with a rear handle 23 always has an elastic assembly 30 rotates about the hinge bolt rearward tendency, when the handle 23 against the elastic component after the handle 23 is pushed forward, so that the elastic force backwards about the hinge 30 when the forward rotation of the screw , the rear handle 23 will drive the top 24 of which the fork head screw 30 is rotated about the hinge rearward, the rearward rotation of the fork head 24 is moved rearwardly through the slot 21 to drive the fork head sliding base 3, when the handle is released 23, the handle 23 under the elastic force of the elastic assembly rearwardly about the hinge bolt 30 is rotated rearward, the rear handle 30 will 动其顶部的拨叉头24绕铰合螺钉30而向前转动,向前转动的拨叉头24通过拨叉头卡槽21带动滑动座3向前移动,这种驱动机构结构简单,安装维修方便;在本实施例中,所述的弹性组件的结构为:包括下端固定于前手柄22上的第一弧形弹片25、以及下端固定于后手柄23上的第二弧形弹片26,第一弧形弹片25的上端与第二弧形弹片26的上端相固定后两者呈“入”形,这种弹性组件的结构简单,安装维修方便;在本实施例中,在顶爪杆16中设置有前后贯通顶爪杆16且与卡爪19所围成的夹针孔隙相连通的顶爪杆通孔27,这样可以使张紧装置也适用于长度较长的医用针;在本实施例中,在压簧螺钉15中设置有前后贯通压簧钉15且与顶爪杆通孔27相连通的压簧螺钉通孔28,这样张紧装置就能适用于任意长度的医用针;在本实施例中,各卡爪19中构成夹针孔隙的内壁均设置有齿形 The top of the fork head movable about the hinge 24 to rotate the screw 30 forward, the forward rotation of the fork head 24 is moved forward through the slot 21 to drive the fork head sliding base 3, such a drive mechanism of simple structure, installation and maintenance convenient; in the present embodiment, the structure of the elastic member is: fixed to the lower end of the front handle includes a first arcuate lever on 2225, and is fixed to the lower end of the handle 23 on the second arcuate tabs 26, a curved leaf spring 25 and the upper end of the second arc-shaped elastic piece fixed to the upper end 26 of the two was "in" shape, a simple structure such elastic assembly, easy installation and maintenance; in the present embodiment, the pawl lever 16 in the top is provided with a through longitudinal rod 16 and the top jaw and the clamping jaw pin aperture 19 surrounded by a top communicating pawl lever through hole 27, so that the tensioning device can also be applied to a medical needle a longer length; in the present embodiment embodiment, the spring is provided with a longitudinal through-screws 15 and compression spring 15 and the top staple pawl lever through hole 27 communicating the pressure spring screw through-hole 28, so that the device can be applicable to any medical needle tensioned length; in in this embodiment, each of the pawl 19 constituting the inner wall of the needle clamp provided with a toothed aperture 29,这样可以便卡爪19更好地对医用针8进行夹持,提高了稳定性;在本实施例中,所述顶爪杆16的前端为由前向后逐渐向外倾斜的第一锥形斜面32,各卡爪19的后端设置有能与第一锥形斜面32配合接触的卡爪后端斜面33,这样能确保卡爪19所围成的夹针孔隙能允许最大直径尺寸的医用针8通过;在本实施例中,导针嘴2的后端为由前向后逐渐向内倾斜的第二锥形斜面34,各卡爪19的前端设置有能与第二锥形斜面34配合接触的卡爪前端斜面35,这样能确保卡爪19所围成的夹针孔隙能允许最大直径尺寸的医用针8通过;在本实施例中,在顶爪杆16的外壁上设置有定位凸肩17,压簧18的两端分别顶在定位凸肩17与压簧螺钉15上,这样安装更方便; 29, so that they can better pawl 19 of medical needle holder 8, the improved stability; In the present embodiment, the front end of the top rod 16 of the pawl before gradually inclined rearwardly outward by a first tapered ramp 32, the rear end of each jaw 19 is provided with a claw 32 with the rear end bevel 33 can be in contact with the first tapered inclined surface, so that the pawl 19 ensures that the clip-pin surrounded apertures allow the maximum diameter 8 by the medical needle; in the present embodiment, the rear end of the front guide pin tip 2 is gradually inwardly inclined rearward by a second conical bevel 34, each jaw 19 has a distal end provided with a second tapered can pawl distal bevel inclined surface 34 with the contact 35, this will ensure that the pawl 19 surrounded clip pin apertures allow medical needle a maximum diameter dimension of 8 by; in the present embodiment, the outer wall is provided on the top jaw lever 16 both ends of the positioning shoulder 17, the compression spring 18 are positioned on top of the shoulder screw 17 and the compression spring 15, so that the installation is more convenient;

本发明的工作原理如下: Working principle of the present invention is as follows:

先安装好洞孔环式骨外固定器,接着将医用针8穿过骨骼或软组织,然后用钢针固定夹将医用针8的一端固定在洞孔环的一端,然后将医用针8的另一端从导针嘴2的导针孔9伸入张紧器的夹针孔隙,接着医护人员单手持张紧器,并将张紧器的导针嘴2的前端抵在洞孔环另一端上,接着向前推压后手柄23,使后手柄23克服第一弧形弹片25与第二弧形弹片26的向后弹力作用下绕铰合螺钉30向前转动,带动其顶部的拨叉头24绕铰合螺钉30向后转动,向后转动的拨叉头24通过拨叉头卡槽21带动滑动座3向后移动,在滑动座3向后移动的过程中,滑动座3会同步带动会带动锥形通孔13沿着各卡爪19的卡爪外壁斜面31向后移动,同步推动各卡爪19向内合拢,从而使各卡爪19夹紧从导针孔9伸入夹针孔隙的医用针8,此时,滑动座3、顶爪杆16、卡爪19及被各卡爪19夹紧的医用针8固定为一 First installed hole ring external fixator, then the medical needle 8 through the bone or soft tissue, followed by an end of the needle retaining clips medical needle end hole 8 is fixed to the ring, then another medical needle 8 from one end of the needle clip guide pin aperture guide pin holes 9 into the nozzle 2 of the tensioner, followed by a single hand-held medical tensioner, the tensioner and the guide pin tip against the front end of the ring 2 at the other end of the hole and then pushing the handle 23 forwardly, so that the handle 23 rearwardly against the spring force of the first elastic piece 25 and the second curved arcuate leaf spring 26 is rotated forward about the hinge bolt 30, the top drive fork head 24 about the hinge bolt 30 is rotated backward, the backward rotation of the fork head 24 is moved rearwardly through the slot 21 to drive the fork head sliding seat 3, during the backward movement of the slide base 3, the slide base 3 will entrainment will lead to the tapered outer wall of the through hole 13 inclined surface 19 of the pawl 31 moves backward along each jaw, each jaw 19 to promote synchronization folded inwardly so that each of the jaws 19 grip the needle 9 into the guide pin holes from the pinch the medical needle aperture 8, at this time, the slide base 3, a top pawl lever 16, the pawl 19 and the pawl 19 each clamped fixed to a medical needle 8 体,随着滑动座3继续向后移动,滑动座3中锥形通孔13的内壁会继续箍紧各卡爪19,并同步带动各卡爪19、被各卡爪19夹紧的医用针8以及顶爪杆16—起向后移动,从而拉紧医用针8,待拉紧医用针8后,再使用钢针固定夹将医用针8的该端固定在洞孔环上,接着松开后手柄23,后手柄23在第一弧形弹片25与第二弧形弹片26的向后弹力作用下绕铰合螺钉30向后转动,后手柄30会带动其顶部的拨叉头24绕铰合螺钉30而向前转动,向前转动的拨叉头24通过拨叉头卡槽21带动滑动座3向前移动,在滑动座3向前移动的过程中,滑动座3通过锥形通孔13会同步带动各卡爪19一起前移,当卡爪19前移至其卡爪前端斜面35抵着导针嘴2的第二锥形斜面34后,随着滑动座3的继续前移,滑动座3会逐渐与各卡爪19相脱离,从而使各卡爪19松开伸入夹针孔隙的医用针8,通过上述操作,即完成了对 Body, as the slide continues to move the seat 3 rearwardly, sliding the tapered inner wall of the through hole 13 in the seat 3 will continue tightening the jaw pieces 19 and the respective entrainment pawls 19, 19 are clamped to each jaw medical needle 16- 8 bar and the top jaw move together rearwardly, thereby stretching the medical needle 8, the medical needle 8 to be braced, and then use the medical needle needle retention clips to the end of the hole 8 is fixed to the ring, followed by release after the handle 23, the handle 23 under the elastic force of a first rearwardly curved elastic plates 25 and the second elastic piece 26 is arcuate about the hinge bolt 30 is rotated rearward, the rear handle 30 will drive the top of the fork head 24 about the hinge engagement screw 30 rotates forwardly, the forward rotation of the fork head 24 is moved forward through the slot 21 to drive the fork head sliding seat 3, during the forward movement of the slide base 3, the slide base 3 via the tapered through-hole after each 13 sync driven forward together with jaws 19, the pawl 19 when moved to its front pawl 35 against the front end of the inclined surface of the second guide needle tip tapered inclined surface 342, with the slide base 3 continues to advance, 3 will gradually sliding seat 19 is disengaged from the respective jaw, each jaw 19 so that the clamp release pin projects into the aperture 8 of the medical needle, by the above operation, i.e., completed 医用针的张紧。 Tensioning the medical needle. 本发明具有的优点是:结构简单,体积小,成本低,能单手进行医用针的张紧操作,操作十分方便,并且对医用针的张紧效果好,使医用针在受到轴向力或径向力的时候不易发生形变,撤底避免了医用针在骨骼或软组织中发生晃动而使软组织发生感染的情况发生,保证了临床固定时的力学环境,有助于骨骼固定的准确性和稳定性。 The invention has the advantage of: simple structure, small size, low cost, single-handed operation for tensioning medical needle, easy to operate, and good tensioning effect of the medical needle, so that the medical needle or subjected to an axial force radial force when deformation is unlikely to occur withdraw at the end to avoid the situation of medical needles occur in bone or soft tissue in the soft tissue infections shaking occurs, to ensure that the mechanical environment during clinical fixed, contribute to the accuracy and stability of skeletal fixation sex.

Claims (9)

1.医用针张紧器,其特征在于:包括固定座、导针嘴及滑动座,在固定座的前后两端分别设置有安装口,在固定座中设置有与其后端安装口相连通的第一内腔、以及连通其前端安装口与第一内腔的第一螺纹孔,所述导针嘴设置在第一螺纹孔中而与固定座相固定,在导针嘴中设置有前后贯通导针嘴且允许医用针穿过的导针孔,所述滑动座从固定座后端的安装口活动插入固定座的第一内腔,滑动座在驱动机构的驱动下能在第一内腔中前后移动,在滑动座的前后两端也分别设置有安装口,在滑动座中设置有第二内腔、用以连通滑动座前端安装口与第二内腔的锥形通孔、以及用以连通滑动座后端安装口与第二内腔的第二螺纹孔,在第二螺纹孔中设置有压簧螺钉,在第二内腔中活动设置有顶爪杆,在顶爪杆与压簧螺钉之间设置有压簧,压簧使得顶爪杆与压簧螺 1. The medical needle tensioner characterized by: a holder, the nozzle needle guide and sliding seats, are respectively provided with a mounting opening in the front and rear ends of the holder, with its rear end provided with a mounting port communicating in the holder a first lumen and a first threaded hole which communicates with the first lumen distal of the mounting opening, the needle guide tip provided with a first fixing threaded hole and the fixing base and, provided on the guide pin through the mouth before and after guide needle tip and allow a medical needle through the guide pin holes, the slide holder from the rear end of the first lumen seat mounting opening activity insert holder, the slide base can first lumen at the driving mechanism moves back and forth, the slide base in the front and rear ends are also provided with a mounting opening, is provided with a second lumen in the sliding seat, the tapered through hole for communicating the front end of the sliding seat mounting opening and a second lumen, and means for a second sliding base screw hole communicating with the rear end of the second lumen mounting opening provided in the second compression spring screw threaded hole, the second rod has a top pawl lumen activities provided, in the top compression spring pawl lever there is provided between the screw compression spring, spring pawl lever such that the top compression spring spiro 始终具有相互远离的趋势,在锥形通孔中设置有若干卡爪,每个卡爪的外壁为能与锥形通孔的内壁相配合的、由前至后逐渐向外倾斜的斜面,所有卡爪能共同围成一个允许医用针穿过且与导针孔相连通的夹针孔隙,所述顶爪杆在压簧的弹力作用下始终具有将各卡爪前推至抵着导针嘴的趋势;当滑动座在驱动机构的驱动下向后移动时,会带动锥形通孔沿着各卡爪的外壁斜面向后移动,同步推动各卡爪向内合拢,从而使各卡爪夹紧从导针孔伸入夹针孔隙的医用针,随着滑动座继续向后移动,滑动座中锥形通孔的内壁会继续箍紧各卡爪,并同步带动各卡爪、被各卡爪夹紧的医用针以及顶爪杆一起向后移动。 Always has a tendency away from each other, the tapered through-hole provided in a number of jaws, each jaw of an outer wall to engage an inner wall of the through hole is tapered from front to back outwardly inclined surface gradually inclined, all cooperatively define the jaws can allow a medical needle through and communicating with the guide pin holes needle clamp aperture, said top having a pawl lever always pushed to the front of each pawl tip against the guide pin by the elastic force of the compression spring trend; when the slide base is moved backward by a drive mechanism, will lead to the tapered outer wall of the through hole moves rearwardly along the inclined surface of each jaw, each jaw synchronization push inwardly folded, so that each clamp jaw tight clip pin projecting into the guide pin holes pores medical needle continues to move rearwardly with the slide base, an inner wall of the tapered seat slide through holes will continue tightening the jaw pieces, the jaw pieces and entrainment, each card is together with the rearward movement of the jaws gripping the medical needle and the top pawl lever.
2.根据权利要求1所述的医用针张紧器,其特征在于:所述的驱动机构的结构为:在固定座的侧壁上沿周向对称设置有一对连通第一内腔的开口,在每个开口中的滑动座侧壁上分别设置有一个拨叉头卡槽,在开口前侧的固定座的底部固定有前手柄,前手柄上通过铰合螺钉铰接有后手柄,在后手柄的顶部设置有呈U形的拨叉头,拨叉头的一对U形臂正好分别卡在滑动座侧壁上的一对拨叉头卡槽中,在前手柄与后手柄之间设置有使后手柄始终具有绕铰合螺钉向后转动趋势的弹性组件,当向前推压后手柄,使后手柄克服弹性组件的向后弹力绕铰合螺钉向前转动时,后手柄会带动其顶部的拨叉头绕铰合螺钉向后转动,向后转动的拨叉头通过拨叉头卡槽带动滑动座向后移动,当松开后手柄时,后手柄在弹性组件的向后弹力作用下绕铰合螺钉向后转动,后手柄会带动其 The medical needle tensioner according to claim 1, wherein: the structure of the driving mechanism is as follows: in the holder along a side wall circumferentially provided symmetrically with a pair of openings communicating with the first lumen, in each opening in the side wall are provided with a sliding seat a fork head slot, open at the bottom side of the front holder fixed front handle, the front handle is hinged by a hinge screw rear handle, after the handle It is provided with a top U-shaped fork head, the fork head just one pair of U-shaped arms are respectively engaged with the pair of fork head slots on the side walls of the sliding seat is provided between the handle and the rear handle with a front after the handle assembly always has an elastic hinge about a rotation of the screw backward tendency, when the handle assembly against the resilient urging forwardly the handle after the elastic force backwards about the hinge screw is rotated forward, the handle will drive the top the fork head screw is rotated rearwardly about the hinge, the backward rotation of the fork head sliding base driven by the fork head is moved backward slot, when the release handle, the handle in backward elastic force of the elastic component backward rotation about the hinge bolt, which will lead to the rear handle 顶部的拨叉头绕铰合螺钉而向前转动,向前转动的拨叉头通过拨叉头卡槽带动滑动座向前移动。 The top of the fork head is rotated about the hinge bolt forwardly, a forward rotation of the fork head driven sliding base slot by forward movement of the fork head.
3.根据权利要求2所述的医用针张紧器,其特征在于:所述的弹性组件的结构为:包括下端固定于前手柄上的第一弧形弹片、以及下端固定于后手柄上的第二弧形弹片,第一弧形弹片的上端与第二弧形弹片的上端相固定后两者呈“入”形。 The medical needle tensioner according to claim 2, wherein: the structure of the elastic member is: fixed to the lower end comprising a first curved elastic plates on the front handle, and the handle is fixed to the lower end of the rear a second arcuate elastic piece, the upper ends of the first and second arcuate resilient piece curved elastic plates fixed to both the shape of the "in" shape.
4.根据权利要求1或2或3所述的医用针张紧器,其特征在于:在顶爪杆中设置有前后贯通顶爪杆且与夹针孔隙相连通的顶爪杆通孔。 The medical needle tensioner 1 or claim 2 or claim 3, wherein: the top pawl lever is provided with a through hole penetrating the front and rear and a top bar and the clamping pawl needle communicating pores in the top of the pawl lever.
5.根据权利要求4所述的医用针张紧器,其特征在于:在压簧螺钉中设置有前后贯通压簧钉且能与顶爪杆通孔相连通的压簧螺钉通孔。 The medical needle tensioner of claim 4, wherein: the spring is provided with a longitudinal through-screws and can compression spring staple spring screw through hole communicating with the through hole is connected to the top pawl lever.
6.根据权利要求1或2或3所述的医用针张紧器,其特征在于:各卡爪中构成夹针孔隙的内壁均设置有齿形纹。 The medical needle tensioner 1 or claim 2 or claim 3, wherein: each of the inner walls constituting the clamp jaws are provided with a needle aperture toothed pattern.
7.根据权利要求1或2或3所述的医用针张紧器,其特征在于:所述顶爪杆的前端为由前向后逐渐向外倾斜的第一锥形斜面,各卡爪的后端设有能与第一锥形斜面配合接触的后端斜面。 The medical needle tensioner of claim 1 or 2 or 3, characterized in that, wherein: said first top tapered ramp front end by a front pawl lever gradually inclined rearwardly outwardly, each jaw We can cooperate with the rear end of the rear end of the inclined surface in contact with the first tapered inclined surface.
8.根据权利要求1或2或3所述的医用针张紧器,其特征在于:导针嘴的后端为由前向后逐渐向内倾斜的第二锥形斜面,各卡爪的前端设置有能与第二锥形斜面配合接触的前端斜面。 The medical needle tensioner 1 or claim 2 or claim 3, wherein: the rear end of the front guide pin tip rearwardly by progressively inwardly inclined second tapered inclined surface, the distal end of each jaw with a front end of the inclined surface can be provided with a second contact with the conical bevel.
9.根据权利要求1或2或3所述的医用针张紧器,其特征在于:在顶爪杆的外壁上设置有定位凸肩,压簧的两端分别顶在定位凸肩与压簧螺钉上。 9. The medical needle tensioner 1 or claim 2 or claim 3, wherein: the top of the outer wall of the pawl lever is provided with a positioning shoulder, respectively, the top ends of the compression spring and spring detent bead in on the screws.
CN201510965744.1A 2015-12-22 2015-12-22 Medical needle tensioner CN105640626B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6599295B1 (en) * 1998-04-21 2003-07-29 Tornier Sa Device for setting and removing an implant such as a suture anchor
CN201088614Y (en) * 2007-11-11 2008-07-23 郑忠堂;郑 楠 Routine apparatus assembly device of bone
US20100087831A1 (en) * 2008-10-07 2010-04-08 Donald Marx Knee replacement nail remover
CN203029371U (en) * 2012-12-29 2013-07-03 重庆西山科技有限公司 Kirschner wire adjustable clamping mechanism
CN203107246U (en) * 2013-01-14 2013-08-07 北京市富乐科技开发有限公司 Multifunctional bone needle spanner
CN205379352U (en) * 2015-12-22 2016-07-13 张家港市亚堤仕医疗咨询管理有限公司 Medical syringe tensioning ware

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6599295B1 (en) * 1998-04-21 2003-07-29 Tornier Sa Device for setting and removing an implant such as a suture anchor
CN201088614Y (en) * 2007-11-11 2008-07-23 郑忠堂;郑 楠 Routine apparatus assembly device of bone
US20100087831A1 (en) * 2008-10-07 2010-04-08 Donald Marx Knee replacement nail remover
CN203029371U (en) * 2012-12-29 2013-07-03 重庆西山科技有限公司 Kirschner wire adjustable clamping mechanism
CN203107246U (en) * 2013-01-14 2013-08-07 北京市富乐科技开发有限公司 Multifunctional bone needle spanner
CN205379352U (en) * 2015-12-22 2016-07-13 张家港市亚堤仕医疗咨询管理有限公司 Medical syringe tensioning ware

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