CN2852974Y - Broken nail extractor for osteology - Google Patents

Broken nail extractor for osteology Download PDF

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Publication number
CN2852974Y
CN2852974Y CN 200520139965 CN200520139965U CN2852974Y CN 2852974 Y CN2852974 Y CN 2852974Y CN 200520139965 CN200520139965 CN 200520139965 CN 200520139965 U CN200520139965 U CN 200520139965U CN 2852974 Y CN2852974 Y CN 2852974Y
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CN
China
Prior art keywords
screw
cannula
sleeve
extractor
broken nail
Prior art date
Application number
CN 200520139965
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Chinese (zh)
Inventor
程琮
吴莉
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程琮
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Publication date
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Priority to CN 200520139965 priority Critical patent/CN2852974Y/en
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Publication of CN2852974Y publication Critical patent/CN2852974Y/en

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Abstract

The present utility model relates to an extractor of broken nail used in the department of orthopedics. The extractor is composed of a cannula and screw. The screw is located within the cannula. There is a handle on the cannula. The noumenon within the cannula has inner thread which is located at the anterior and posterior ends of the cannula. The inner thread at the anterior end of the cannula can match with the outer thread of the broken nail to be taken out, and the inner thread at the posterior end of the cannula can match with the outer thread of the screw. It has the following advantages of simple structure, convenience in use and small invasiveness to the patient during the operation. At the assistance of an x-ray machine, a small hole is cut in the size of 1cm using a twisting knife for pore opening. Then, match the cannula with the thread on the broken nail, revolve the screw in to make the head of the screw against the broken nail, and then, revolve the cannula in the opposite direction. In the end, the broken nail will be easily revolved out.

Description

一种骨科用的断钉取出器 Orthopedic use one kind of broken nails extractor

技术领域 FIELD

本实用新型涉及一种医疗器械,特别是一种骨科用的断钉取出器。 The present invention relates to a medical instrument, particularly orthopedic use one kind of broken nails extractor.

背景技术 Background technique

骨折病人的创伤治疗,在医疗临床上经常采用的是折断式螺钉或者普通螺钉固定法,根据骨折的部位,选择不同的角度、螺钉、数量加以固定,等其生长愈合后,再拆除螺钉。 Wound healing fracture patients, frequently used in medical clinical formula is broken screws or screws ordinary method, according to the fracture site, selecting different angles, screws, to be fixed number, and other growth after healing, then remove the screws. 但是在愈合期内,往往会因为各种原因出现螺钉断裂的现象,比如:骨折处没有完全愈合,病人就起床活动,或摔倒等激烈运动,使螺钉受力过大而断裂;有癫痫病的骨折患者,在骨折未痊愈时,发病抽搐,使螺钉反复折叠断裂;断钉在病人骨折处固定位置不正确,受断端的剪切力过大而断钉;由于螺钉质量问题而发生断钉。 But in the healing period, often occur due to various reasons screw breakage phenomena, such as: the fracture is not completely healed, the patient got up activities such as strenuous exercise or fall, so that the screw excessive force and fracture; have epilepsy the fracture patients, when the fracture is not healed, the incidence of convulsions, the screw repeatedly folded fracture; off position fixation fracture patient is not correct, by the shearing force is too large and broken ends of the staple; quality problems occur due to the screw-off nail. 断钉发生的部位一般在螺钉与固定钢板的接合部以及骨裂处等受力点。 Parts broken nails typically occurring in screw engagement with the fixed plate and the other force at fracture point. 螺钉一旦发现断裂现象,就必需要将其取出重新进行固定,断钉的取出是一个比较困难的问题,要借助于工具才能取出。 Screw breakage once found, would be needed to remove re-fixing nail taken off is a more difficult problem, in order to remove the aid of a tool. 临床上一般是采用开孔器和断钉取钉器二个工具配合使用,先开孔器在断钉部位的肉体上开出一个孔,暴露出断钉,再用取钉器取出断钉。 Clinically generally used hole and screw breakage take nails with the use of two tools, the first openings in the staple site physically breaking open a hole, screw breakage is exposed, and then taken off the take nails staples.

目前临床上采用的断钉取出器,为三爪式夹紧结构。 Broken nails currently used clinically extractor for three-jaw clamp structure. 使用时,先用开孔绞刀在断钉部位的肉体上绞出一个洞,再将三爪取钉器伸进螺钉的断钉部位,然后旋紧螺杆,使三爪夹紧断钉的头部,然后旋出断钉。 In use, with the first opening in the flesh cutter twist-off parts of a nail hole, then take nails jaw screws extending into screw breakage site, and then tighten the screw, the clamping jaw so that the nail head off section, and then unscrew the screw breakage. 在临床使用中,现有的断钉取出器,只适用于断骨表面及较浅部位的断钉取出,当断钉的断裂部位较深时,特别是股骨颈内出现断钉时,取断钉就非常困难,必须先要用开孔绞刀打开一个2-3cm的圆洞,才能夹住断钉的头部才能取出断钉,或者要掏空断钉表面才能取钉,这样病人出血多,创伤大,恢复时间长,而且容易使股骨颈骨折,稳定性受到破坏,骨折难以愈合,甚至不愈合。 In clinical use, a conventional screw breakage extractor, and applies only to the surface of a fractured bone broken nails shallow parts removed when breaking point deeper broken nails, screw breakage occurs in particular the femoral neck, take off the staple is very difficult, must first open a round hole with the hole cutter of 2-3cm, in order to grip the head of the nail taken off broken nails, or nail surface in order to take off emptied nails, so that the patient bleeding , trauma, long recovery time, and easy to make femoral neck fracture, damage stability, difficult to heal fractures, even healing.

发明内容 SUMMARY

本实用新型的所要解决的技术难题是,克服上述现有技术的不足,提供一种结构简单、使用方便、创伤小的骨科用的断钉取出器。 The present invention is to solve the technical challenge is to overcome the deficiencies of the prior art, to provide a simple, easy to use, small orthopedic trauma with broken staple extractor.

本实用新型的具体技术解决方案是,设有套管,套管上设有手柄,套管的管内本体上设有内螺纹,其特征在于:套管内设置有螺杆,螺杆上的外螺纹可与套管上的内螺纹相配合。 The present invention specific technical solution, with the sleeve, the sleeve is provided with a handle, the inner tube is provided with an internally threaded sleeve body, characterized in that: the inner sleeve is provided with a screw, an external thread on the screw may be internal threads on the sleeve cooperates.

套管上的内螺纹分别设于套管的前后二端部,套管前端部的内螺纹可与所要取出的断钉的外螺纹相配合,套管后端部的内螺纹可与螺杆上的外螺纹相配合。 Two internally threaded front and rear ends are provided on the sleeve of the sleeve, the threaded sleeve can cooperate with the distal end portion of the external thread to be removed off the nail, the inner threaded sleeve with a rear end portion of the screw cooperating external thread.

螺杆上设有手柄。 A handle screw.

套管的前端的螺纹处还设有夹角为30°-60°的拨锥。 At the front end of the threaded sleeve it is also provided with an angle of 30 ° -60 ° dial cone.

本实用新型与现有技术相比的优点是,结构简单,只有套管和螺杆二个零件组成;使用方便,只要在X光机的辅助下,先将套管与断钉上的螺纹配合2-3牙左右,再旋入螺杆,使螺杆的头部顶住断钉,然后再反向旋动套管,就可方便的旋出断钉,且操作过程对病人的创伤小,只要用开孔绞刀开一个1cm左右的小洞即可。 The advantages of the present invention compared to prior art is the simple structure, the sleeve and the screw only two component parts; easy to use, as long as with the aid of X-ray machine, and the first casing 2 is screwed off nailed -3 teeth, and then screwed into the screw, the head of the screw against the screw breakage, then the reverse rotating sleeve, unscrewing can be conveniently broken nails, and the operation of the process of little trauma to the patient, as long as the opening and reamer hole opened about a 1cm hole can be.

附图说明 BRIEF DESCRIPTION

图1为本实用新型的结构示意图。 Figure 1 is a schematic view of the structure of the new utility.

图中标号:1-螺杆手柄,2-套管,3-螺杆,4-套管手柄,5-套管后端内螺纹,6-套管前端内螺纹,α-套管前端的拨锥夹角。 FIG numeral: 1 to screw the handle, the sleeve 2-, 3- screw, 4- handle casing, the rear end of the inner threaded sleeve 5-, 6- dial tapered inner threaded end of the pin, the distal end of the clip sleeve alpha] angle.

具体实施办法本实用新型实施例由套管2和螺杆3组成,套管2上设有手柄4,套管2的管内本体上设有内螺纹5、6,螺杆3设置于套管2内,螺杆3上的外螺纹可与套管2上的内螺纹5、6相配合。 Specific measures novel embodiment of the present invention the sleeve 2 and the screw 3 by the composition, the sleeve 2 is provided with a handle 4, 5, 6 an internal thread on the inner tube main body casing 2, a screw 3 disposed inside the sleeve 2, external screw thread on the sleeve 3 may cooperate with the internal threads 5,6 2. 套管2上的内螺纹6、5分别设于套管2的前后二端部,套管前端部的内螺纹6可与所要取出的断钉的外螺纹相配合,套管2后端部的内螺纹5可与螺杆3上的外螺纹相配合。 6,5 internal threads on the sleeve 2 are provided on the sleeve portion 2 of the front and rear ends, the front end portion of the inner threaded sleeve cooperates with the external thread 6 may be taken off the nail, the rear end portion of the sleeve 2 5 can mate with internal threads on the external threads of the screw 3. 一般情况下,套管2前后端部的内螺纹6、5为相同螺纹,但其套管前端部螺纹6必须与所取断钉的外螺纹相配。 Typically, an internally threaded sleeve 2 6,5 front end portion, the distal end portion of the sleeve but must be compatible with the external screw thread 6 of the staple taken off the same thread. 螺杆3上设有手柄1,可旋转螺杆手柄1使螺杆3在套管2内前后运动。 A handle provided on the screw 3, the handle 1 is rotatable screw the screw 3 in the sleeve 2 forward and backward movement. 为便于套管2与断钉配合,套管2的前端的螺纹处还设有拨锥,其拨锥的夹角α为30°-60°。 To facilitate cooperation with the sleeve off the staple 2, the threaded sleeve at the front end of the dial 2 is also provided with a cone, the cone angle α which dialed is 30 ° -60 °.

使用时,整个操作过程均在X光机的辅助下进行。 When used, the process operations are carried out with the aid of X-ray machine. 先用开孔绞刀在患处开一个1cm左右的小洞,然后放入本取钉器,使套管2的前端内螺纹6与断钉上的螺纹配合2-3牙,旋入螺杆3,使螺杆3的头部顶住断钉,然后再反向转动套管2,从而取出断钉,整个操作过程对病人的创伤非常小。 First with the affected area open hole cutter about a 1cm hole, and then into this take nails, the distal end of the inner threaded sleeve 2 and 6 of the nail breaking threaded engagement teeth 2-3, screwed into the screw 3, 3 of the screw head against the screw breakage, and then reverse rotation of the sleeve 2, so that the nail taken off, the entire operation very little trauma to the patient.

Claims (4)

1.一种骨科用的断钉取出器,设有套管,套管上设有手柄,套管的管内本体上设有内螺纹,其特征在于:套管内设置有螺杆,螺杆上的外螺纹可与套管上的内螺纹相配合。 An orthopedic screw breakage extractor used, with the sleeve, the sleeve is provided with a handle, the inner tube is provided with an internally threaded sleeve body, characterized in that: the inner sleeve is provided with a screw, the screw thread on the outer may cooperate with internal threads on the sleeve.
2.如权利要求1所述的一种骨科用的断钉取出器,其特征在于:套管上的内螺纹分别设于套管的前后二端部,套管前端部的内螺纹可与所要取出的断钉的外螺纹相配合,套管后端部的内螺纹可与螺杆上的外螺纹相配合。 2. An orthopedic nail off with the extractor to claim 1, characterized in that: internal threads on the sleeve are provided at two front and rear ends of the sleeve, the threaded sleeve and the distal end portion may be the taken off the nail an external thread cooperating, the rear end portion of the threaded sleeve can cooperate with external threads on the screw.
3.如权利要求1或2所述的一种骨科用的断钉取出器,其特征在于:螺杆上设有手柄。 One kind or broken nails orthopedic according claim 12 with the extractor, which is characterized in that: the screw provided with a handle.
4.如权利要求1或2所述的一种骨科用的断钉取出器,其特征在于:套管的前端的螺纹处还设有夹角为30°-60°的拨锥。 4. The broken nails or claim 12 with one kind of orthopedic claim extractor, wherein: the front end of the threaded sleeve is also provided with a cone angle of dial 30 ° -60 ° of.
CN 200520139965 2005-12-20 2005-12-20 Broken nail extractor for osteology CN2852974Y (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100467001C (en) 2007-05-17 2009-03-11 浙江大学 Device for taking out broken nail
CN102151171A (en) * 2011-03-15 2011-08-17 平阴县人民医院 Broken-nail extractor for orthopedics and using method thereof
CN103750897A (en) * 2014-01-16 2014-04-30 青岛华仁技术孵化器有限公司 Orthopaedic broken screw removing device and using method thereof
CN104434295A (en) * 2014-11-07 2015-03-25 中国人民解放军第四军医大学 Special screw driver for taking orthopaedic internal fixed slip screw

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100467001C (en) 2007-05-17 2009-03-11 浙江大学 Device for taking out broken nail
CN102151171A (en) * 2011-03-15 2011-08-17 平阴县人民医院 Broken-nail extractor for orthopedics and using method thereof
CN102151171B (en) 2011-03-15 2012-09-26 平阴县人民医院 Broken-nail extractor for orthopedics and using method thereof
CN103750897A (en) * 2014-01-16 2014-04-30 青岛华仁技术孵化器有限公司 Orthopaedic broken screw removing device and using method thereof
CN103750897B (en) * 2014-01-16 2016-09-07 王希强 Orthopedic broken screw withdrawing device and using method thereof
CN104434295A (en) * 2014-11-07 2015-03-25 中国人民解放军第四军医大学 Special screw driver for taking orthopaedic internal fixed slip screw

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