WO2017020850A1 - 一种钢针折弯装置 - Google Patents

一种钢针折弯装置 Download PDF

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Publication number
WO2017020850A1
WO2017020850A1 PCT/CN2016/093230 CN2016093230W WO2017020850A1 WO 2017020850 A1 WO2017020850 A1 WO 2017020850A1 CN 2016093230 W CN2016093230 W CN 2016093230W WO 2017020850 A1 WO2017020850 A1 WO 2017020850A1
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WIPO (PCT)
Prior art keywords
steel needle
contact
bending
positioning groove
force
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PCT/CN2016/093230
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English (en)
French (fr)
Inventor
刘建民
Original Assignee
郑州泽正技术服务有限公司
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Application filed by 郑州泽正技术服务有限公司 filed Critical 郑州泽正技术服务有限公司
Priority to CN201680040889.3A priority Critical patent/CN107847248A/zh
Publication of WO2017020850A1 publication Critical patent/WO2017020850A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the invention relates to a forming and cutting method and a forming cut-off device for a surgical component, in particular to a bending and scraping method for an orthopedic steel needle and a bending and scraping device.
  • steel needles are commonly used as butt-fixed steel needles. Generally, steel needles are about 20 cm, and diameters are between 0.5 and 4 mm. It is used to fix short-fracture fractures such as short fractures or avulsion fractures, and is often used in the fixation of temporary fracture blocks during orthopedic surgery.
  • the steel needle can be cut according to the size of the butt bone, and then the steel needle is inserted into the drilled bone for fixation, and the bent steel needle is exposed outside the bone to prevent the needle tail from being stabbed on the bone surface. The skin may not be inserted into the bone surface and cannot be removed in the future.
  • the needle holder or the clamp head is often used to complete the bending work, which is often time-consuming and laborious.
  • the handle of the CN87112315U patent must be rotated 180 degrees to bend the steel needle. During the bending process, the needle block is pressed. The side plane is always in contact with the steel pin, making the entire bender too long and very inconvenient to use.
  • the steel needle bending and scraping device provided by the priority patent 2014206616135 which is claimed in the present application, can not only fold the steel needle to a desired angle at a time, but also can cut the steel needle, but the material and installation of the bending and scraping device on the device The requirements are higher, especially the positioning groove, the limit pad, the contact and the scraping blade which are in contact with the steel needle; in other applications, the orthopedic steel needle only needs to be bent at the upper part, and the product provided by the patent 2014206616135 is obviously Some are oversized.
  • a steel needle bending device includes a positioning groove, and a contact is provided above the positioning groove to apply a bending force to the steel needle, and the contact applies a force to the steel needle as a lateral force in a side direction of the positioning groove.
  • the contact applies a lateral force in the lateral direction of the positioning groove to the steel needle, and applies a lateral force to the steel needle in a linear direction in which the contact forms an angle with the central axis of the positioning groove.
  • a bending force is formed between the contact and the corresponding side of the positioning notch to bend the steel needle.
  • the upper side of the positioning slot is configured to bend the steel needle to a desired angle limiting pad, and the contact and the limiting pad form a scraping slit to cut the bent steel needle.
  • a guide rail pair is disposed between the contact and the positioning groove.
  • the positioning slot is disposed on the frame, and the hydraulic cylinder is fixed on the frame, and the piston head of the hydraulic cylinder fixes the contact.
  • the contact is bent by a cam to be bent and scraped.
  • the positioning groove is disposed on one end surface of the clamp head in the jaw, and the bending contact is disposed on the side of the other end of the clamp head, and the two clamp heads are closed to bend the steel needle.
  • the upper side of the positioning slot is configured to bend the steel needle to a desired angle limiting pad, and the contact and the limiting pad form a scraping slit to cut the bent steel needle.
  • the positioning groove is an active groove for clamping the steel needle, or a limiting groove matched with the diameter of the steel needle.
  • the movable groove of the clamping steel needle is another jaw.
  • the use of a clamp head is often performed by first clamping the steel needle and then bending it in a clamped state, which is time consuming and laborious; the present invention not only provides a one-time bending of the orthopedic steel needle.
  • the device is suitable for the case where the steel needle needs to be scraped off; and a device which can only bend the steel needle is provided, and since the force for bending the steel needle is much smaller than the scraping force, the material requirement is not High, low production cost, can be applied to the case of orthopedic steel needles only need to bend.
  • Figure 1 is a schematic view showing the structure of a bendable device of the present invention
  • Figure 2 is a schematic view showing the structure of the bending force provided by the hydraulic cylinder of only the bendable device
  • Figure 3 is a schematic view showing the structure of the bending force provided by only the bendable device cam
  • Figure 4 is a schematic view showing the structure of the bending force provided only by the jaws of the bendable device
  • Figure 5 is a schematic structural view of the bending and scraping device of the present invention.
  • Figure 6 is a schematic view showing the structure of the bending force provided by the hydraulic cylinder of the bending and scraping device
  • Figure 7 is a schematic view showing the bending force of the bending and scraping device cam
  • Figure 8 is a schematic view showing the structure of the bending force provided by the jaws of the bending and scraping device
  • Fig. 9 is a schematic view showing the structure of the steel pin which is protruded from the side of the positioning groove by the screw.
  • a steel needle bending device as shown in FIG. 1 and FIG. 2, includes a positioning groove 1 for positioning a steel needle, and a contact 3 for applying a bending force to the steel needle is disposed above the positioning groove 1, and the contact 3 is provided a scraping cutting edge 4 for bending a steel needle; a side of the positioning groove 1 is provided with a steel needle bent to a bending pad 5 requiring an angle, and the right side of the bending pad 5 is lower than the movement to the top of the steel needle
  • the scraper cutting edge 4 on the head 3 has a distance of at least one steel needle diameter, and the upper surface of the bending pad 5 and the scraping cutting edge 4 which is moved to the upper side maintain a distance of at least one steel needle diameter.
  • a bending force is formed between the contact 3 and the corresponding side of the positioning groove 1, that is, the contact 3 and the right side of the bending pad 5 form a bending force to bend the steel needle.
  • Steel can be changed with the change of the supporting steel pin point and the angle of the bending pad The needle is bent at different angles.
  • a guide rail 10 is disposed between the contact 3 and the positioning groove 1, so that the movement of the contact is straighter, the positioning groove 1 is disposed on the frame 502, the hydraulic cylinder 8 is fixed on the frame 502, and the piston head 801 of the hydraulic cylinder 8 is fixed.
  • the steel needle When the invention is used, the steel needle is first positioned, and the steel needle positioning finger is clamped in the positioning groove matched with the diameter of the steel needle or in the movable groove as shown in FIG. 9, so that the steel needle can resist the bending force.
  • the contact 3 applying the bending force applies a bending force to the steel needle along a linear direction forming an angle with the central axial direction of the positioning groove 1, since the right side of the bending pad 5 is touched
  • the scraping cutting edge on the head is low, so when the scraping cutting edge moves to the protruding steel needle, the steel needle is bent, and the steel needle is bent and padded on the limiting pad, due to the height and movement of the left side of the limiting pad
  • the upper scraping edge 4 maintains at least one steel needle diameter, so the scraping blade can only continue to bend the steel needle and cannot scrape it. Since the force of bending the steel needle is much smaller than the scraping force, the device has low material requirements and low manufacturing cost, and can be applied to the
  • the contact 3 is pushed by the cam 9 for bending.
  • the positioning groove 1 is disposed at an end face of one of the jaws 101 in the jaw 10, and the bending contact 3 is disposed at the side of the end of the other jaw 102.
  • the needle is bent, and the bending force is the force in the direction of the circular arc applied to the steel needle when the two clamp heads are closed.
  • a device capable of bending and bending a steel needle as shown in FIGS. 5-8, different from the above-mentioned device capable of bending only a steel needle, the right side of the bending pad 5 is lower than the movement to The scraping cutting edge 4 on the contact 3 above the steel needle has a distance of at least one steel needle diameter, the left side of the bending pad 5 is connected to the limiting pad 2, the upper surface of the limiting pad 2 and the scraping blade moving to the upper side Contact, form a scraping slit, and cut the bent steel needle.
  • the steel needle can be bent into different angles and scraped and cut. .
  • the use of the present invention to bend a steel needle includes the following steps:
  • the steel needle positioning finger clamps the steel needle in the positioning groove matched with the diameter of the steel needle or in the movable groove as shown in FIG. 9 so that the steel needle can resist the bending force and the scraping
  • the cutting force exposes one end to be bent, and the lateral force of the side of the positioning groove is applied to the steel needle by the contact 3 to bend the steel needle, and the bent steel needle pad is placed on the limiting pad 5, the contact
  • the scraping blade 4 on 3 continues to apply a scraping force to cut the steel needle.
  • the contact applying the bending force applies a bending force to the steel needle in a linear direction forming an angle with the central axis of the positioning groove, and the cutting force is a bending force in a straight line direction.
  • the steel needle is positioned at one of the two jaw ends 101, and the bending force in step 2 is the side of the end of the other jaw 102, which is applied to the steel needle when closed.
  • the force in the direction of the circular arc, the direction in which the scraping force continues to be applied in step 4 is the continuation of the force in the direction of the circular arc in step 2.
  • the positioning groove 1 is a movable groove for clamping the steel needle, that is, one side wall of the groove is moved and clamped, and one side wall of the groove in FIG. 9 protrudes from the end surface 111 of the screw bolt rod to clamp the steel needle to prevent the steel needle from being folded. Move or pull out of the limit slot when bending and cutting.
  • the movable groove for clamping the steel needle can also be another jaw, that is, the two side walls of the movable groove are disposed on one clamp head, and the other clamp
  • the head is provided with a bending contact, the two clamping heads form a jaw, which can be folded to bend or scrape the steel needle; another jaw can hold the two side walls of the movable slot, so that the two side walls are tightened steel Needle to bend and scrape.
  • the limit groove matched with the diameter of the steel needle.
  • the limit groove restricts the steel needle from coming out of the limit groove.
  • the rest are A limit groove that matches the diameter of the steel needle.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

一种钢针折弯装置，包括定位槽（1），定位槽（1）上方设有向钢针施加折弯力的触头（3），所述触头（3）向钢针施加力为定位槽（1）侧面方向的侧向力。所述钢针折弯装置不但提供了一种一次性将骨科钢针折弯刮断的装置，其适用于需要将钢针刮断的案例；还提供了一种仅可以将钢针折弯的装置，由于使钢针折弯的力远小于刮断力，因此其对材料要求不高，制作成本低，可适用于骨科钢针只需折弯的案例中。

Description

一种钢针折弯装置 技术领域
本发明涉及一种外科手术部件的成型截断方法和成型截断器，尤其涉及一种骨科钢针的折弯刮切方法及折弯刮切装置。
背景技术
在骨科手术中常用钢针作为断骨对接固定的钢针，一般钢针在二十公分左右，直径在0.5～4毫米之间有不同的几种规格。用于固定短小骨折或撕脱骨折等应力不大的骨折固定，也常被用在骨科手术中临时骨折块的固定中。在手术中可根据对接骨骼的大小，对钢针进行剪裁，而后将钢针插入钻空的骨骼中进行固定，并将折弯钢针露出骨骼外，以防止留在骨表面的针尾刺出皮肤或没入骨面而无法在日后取出。目前常应用持针器或钳头来完成折弯工作，往往比较费时费力，公开号为CN87212315U专利中的手柄必须旋转180度才能够将钢针折弯，在折弯过程中，压针块的侧平面始终与钢针接触，使得整个折弯器长度太长，使用起来非常不方便。本申请要求的优先权专利2014206616135提供的钢针折弯刮断装置不但能够将钢针一次折为所需角度，而且可以将钢针截断，然而这种折弯刮断装置对装置的材料及安装要求较高，尤其是与钢针接触的定位槽、限位垫板、触头及刮切刃等部位；另外一些应用中骨科钢针只需上部折弯即可，使用专利2014206616135提供的产品显然有些大材小用。
发明内容
本发明的目的就在于为解决现有技术的不足而提供一种仅可以将钢针折弯的装置，同时提供一种可以将骨科钢针一次性折弯刮断的装置。
本发明的目的是以下述技术方案实现的：
一种钢针折弯装置，包括定位槽，定位槽上方设有向钢针施加折弯力的触头，所述触头向钢针施加力为定位槽侧面方向的侧向力。
所述触头向钢针施加定位槽侧面方向的侧向力，为触头沿着与定位槽的中心轴形成夹角的直线方向对钢针施加侧向力。
所述触头与定位槽口的相应侧之间形成折弯力，将钢针折弯。
所述定位槽口上方一侧，设将钢针折弯到所需角度限位垫板，所述触头与限位垫板形成刮切口，将折弯的钢针刮切断。
所述触头与定位槽之间设导轨副。
所述定位槽设在机架上，机架上固定液压缸，液压缸的活塞头固定触头。
所述触头由凸轮推动进行折弯并刮切。
所述定位槽设在钳口中的一个钳头端头端面，折弯触头设置在另一个钳头端头侧方，两个钳头合拢将钢针折弯。
所述定位槽口上方一侧，设将钢针折弯到所需角度限位垫板，所述触头与限位垫板形成刮切口，将折弯的钢针刮切断。
所述定位槽为夹紧钢针的活动槽，或者为与钢针直径配合的限位槽。
所述夹紧钢针的活动槽为另一个钳口。
现有技术中采用钳头，往往是先钳住钢针，然后在钳住状态下再用力将其折弯，费时费力；本发明不但提供了一种一次性将骨科钢针折弯刮断的装置，其适用于需要将钢针刮断的案例；还提供了一种将仅可以将钢针折弯的装置，由于使钢针折弯的力远小于刮断力，因此其对材料要求不高，制作成本低，可适用于骨科钢针只需折弯的案例中。
附图说明
图1是本发明仅可折弯装置的结构示意图；
图2是仅可折弯装置液压缸提供折弯力结构示意图；
图3是仅可折弯装置凸轮提供折弯力结构示意图；
图4是仅可折弯装置钳口提供折弯力结构示意图；
图5是本发明折弯和刮断装置的结构示意图；
图6是折弯和刮断装置液压缸提供折弯力结构示意图；
图7是折弯和刮断装置凸轮提供折弯力结构示意图；
图8是折弯和刮断装置钳口提供折弯力结构示意图；
图9是定位槽侧方伸出螺杆夹紧钢针结构示意图。
具体实施方式
下面参考附图对本发明作进一步解释。
一种钢针折弯装置，如图1、图2所示，包括定位钢针的定位槽1，定位槽1上方设有向钢针施加折弯力的触头3，该触头3上设用于折弯钢针的刮切刃4；定位槽1的一侧设置钢针折弯到需要角度的折弯垫板5，折弯垫板5右侧高度低于运动至钢针上方的触头3上的刮切刃4至少一个钢针直径的距离，折弯垫板5上表面与运动至上方的刮切刃4至少保持一个钢针直径的距离。触头3与定位槽1口的相应侧之间形成折弯力，即触头3与折弯垫板5右侧形成折弯力，将钢针折弯。随着支撑钢针点的变化和折弯垫板角度的变化，可以将钢 针折为不同角度的弯曲。
触头3与定位槽1之间设导轨付10，这样使触头的移动更直，定位槽1设在机架502上，机架502上固定液压缸8，液压缸8的活塞头801固定触头3。
本发明使用时，首先将钢针定位，将钢针定位指将钢针夹紧在与钢针直径配合的定位槽中或如图9所示的活动槽中，使钢针能够抵抗折弯力，露出需折弯的一端，施加折弯力的触头3沿着与定位槽1的中心轴向形成夹角的直线方向对钢针施加折弯力，由于折弯垫板5右侧较触头上的刮切刃低，因此当刮切刃移动至突出的钢针时，将钢针折弯，钢针折弯后垫于限位垫板上，由于限位垫板左侧高度与运动至上方的刮切刃4至少保持一个钢针直径的距离，因此刮切刃只能将钢针继续折弯而不能将其刮断。由于使钢针折弯的力远小于刮断力，因此此装置对材料要求不高，制作成本低，可适用于骨科钢针只需折弯的案例中。
如图3所示，所述触头3由凸轮9推动进行折弯。
如图4所示，所述定位槽1设在钳口10中的一个钳头101端头端面，折弯触头3设置在另一个钳头102端头侧方，两个钳头合拢将钢针折弯，折弯力为两个钳头合拢时对钢针施加的圆弧线方向的力。
一种可以将钢针折弯刮断的装置，如图5～8所示，与上述仅可以将钢针折弯的装置不同的是，所述折弯垫板5右侧高度低于运动至钢针上方的触头3上的刮切刃4至少一个钢针直径的距离，折弯垫板5左侧连接限位垫板2，限位垫板2上表面与运动至上方的刮切刃接触，形成刮切口，将折弯的钢针刮切断，随着支撑钢针点的变化和折弯垫板与限位垫板角度的变化，可以将钢针折为不同角度的弯曲并刮切断。使用本发明将钢针折弯刮切包括以下几个步骤：
⑴将钢针定位，钢针露出需折弯刮切的一端；
⑵在需折弯刮切的一端施加折弯力，将钢针折弯；
⑶折弯到需要角度后的钢针被限制继续折弯；
⑷由刮切刃继续施加刮切力将钢针刮切断。
具体为：首先将钢针定位(将钢针定位指将钢针夹紧在与钢针直径配合的定位槽中或如图9所示的活动槽中，使钢针能够抵抗折弯力和刮切力)，露出需折弯的一端，由触头3向钢针施加定位槽侧面方向的侧向力将钢针折弯，折弯后的钢针垫于限位垫板5上，触头3上的刮切刃4继续施加刮切力将钢针刮切断。
如图5、6及7所示，施加折弯力的触头沿着与定位槽的中心轴向形成夹角的直线方向对钢针施加折弯力，刮切力为直线方向的折弯力的延续。
如图8所示，将钢针定位在两个钳头中的一个钳头端头101，步骤2中的折弯力为另一个钳头102端头侧方，在合拢时对钢针施加的圆弧线方向的力，步骤4中继续施加的刮切力的方向是步骤2中圆弧线方向的力的延续。
所述定位槽1为夹紧钢针的活动槽，即槽的一个侧壁移动夹紧，图9中槽的一个侧壁伸出旋拧螺栓杆的端面111夹紧钢针，防止钢针折弯刮切时移动或脱出限位槽。
在所述两个钳头合拢折弯钢针的实施例中，夹紧钢针的活动槽还可为另一个钳口，即活动槽的两个侧壁设在一个钳头上，另一个钳头上设折弯触头，两个钳头形成一个钳口，可以合拢将钢针折弯或刮断；另设一个钳口可以夹持活动槽的两个侧壁，使两侧壁加紧钢针，以便折弯和刮断。
或者为与钢针直径配合的限位槽，当钢针被施加折弯力和刮切力时，限位槽限制钢针脱出限位槽，说明书附图中除图9之外，其余都是与钢针直径配合的限位槽。

Claims (11)

  1. 一种钢针折弯装置，包括定位槽(1)，定位槽(1)上方设有向钢针施加折弯力的触头(3)，其特征在于：所述触头(3)向钢针施加力为定位槽(1)侧面方向的侧向力。
  2. 如权利要求1所述的钢针折弯装置，其特征在于：所述触头(3)向钢针施加定位槽(1)侧面方向的侧向力，为触头(3)沿着与定位槽(1)的中心轴形成夹角的直线方向对钢针施加侧向力。
  3. 如权利要求2所述的钢针折弯装置，其特征在于：所述触头(3)与定位槽口的相应侧之间形成折弯力，将钢针折弯。
  4. 如权利要求3所述的钢针折弯装置，其特征在于：所述定位槽口上方一侧，设将钢针折弯到所需角度限位垫板(2)，所述触头与限位垫板形成刮切口，将折弯的钢针刮切断。
  5. 如权利要求3所述的钢针折弯装置，其特征在于：所述触头(3)与定位槽(1)之间设导轨副(10)。
  6. 如权利要求5所述的钢针折弯装置，其特征在于：所述定位槽(1)设在机架(502)上，机架(502)上固定液压缸(8)，液压缸(8)的活塞头(801)固定触头(3)。
  7. 如权利要求5所述的钢针折弯装置，其特征在于：所述触头(3)由凸轮(9)推动进行折弯并刮切。
  8. 如权利要求1所述的钢针折弯装置，其特征在于：所述定位槽(1)设在钳口(10)中的一个钳头(101)端头端面，折弯触头(3)设置在另一个钳头(102)端头侧方，两个钳头合拢将钢针折弯。
  9. 如权利要求8所述的钢针折弯装置，其特征在于：所述定位槽口上方一侧，设将钢针折弯到所需角度限位垫板(2)，所述触头(3)与限位垫板形成刮切口，将折弯的钢针刮切断。
  10. 如权利要求1所述的钢针折弯装置，其特征在于：所述定位槽(1)为夹紧钢针的活动槽，或者为与钢针直径配合的限位槽。
  11. 如权利要求8或10所述的钢针折弯装置，其特征在于：所述夹紧钢针的活动槽为另一个钳口。
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