Special bolt driver for bone screw

A bone screw and cone technology, applied in the field of special screwdrivers, can solve the problems of difficulty in removing the screw, large damage to the patient, long internal fixation time of the locking screw, etc., and achieve the effects of reducing the patient's pain, convenient disassembly, and convenience for carrying and disinfection

Inactive Publication Date: 2011-06-01
鞠传宝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Locking plates and locking screws are often used clinically in orthopedics. Locking screws are composed of a nail body and a nail cap. The nail body is usually thin and short, the nail cap is thin, and the groove on the nail cap is shallow. When removing the locking plate, it is necessary to Use a screwdriver to remove the locking screws fixed on the locking plate. During the process of removing the screws, some locking screws may be fixed due to the long internal fixation time, or because the orthopedic doctor used too ...

Method used

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  • Special bolt driver for bone screw
  • Special bolt driver for bone screw
  • Special bolt driver for bone screw

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Embodiment Construction

[0012] As shown in the accompanying drawings, a special screwdriver for bone screws, including a handle 1 and a screwdriver body 2, is characterized in that the front end of the screwdriver body 2 is provided with two teeth 3, and the rear end is provided with a positioning sleeve 20, and the teeth 3 are made of stainless steel Made, the teeth 3 are in the shape of an "L", and the cusps of the teeth 3 are opposite to each other, so that the teeth 3 can be inserted into the holes on the cap of the special bone screw, so that the bone screw can be unscrewed easily. Slot 4, swivel device slot 4 is provided with a swivel device 5, and the swivel device 5 is composed of a rotating shaft 6, a gear 7, a toothed wheel 8, a positioning ball 9, a spring 10, a positioning plate 11, a positioning sleeve 20 and a pull pin Composed of 12, the cone 8 is semicircular, and the plane on one side of the cone 8 is respectively provided with forward teeth 13 and reverse teeth 14, and the arc surfac...

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Abstract

The invention relates to the technical field of medical appliances, in particular to a special bolt driver for a bone screw. The special bolt driver comprises a handle and a bolt driver body, and is characterized in that the front end of the bolt driver body is provided with two teeth; the back end of the bolt driver body is provided with a locating block; the teeth are made of stainless steel materials, dental cusps of the teeth are opposite; a direction-turning device groove is arranged in the handle; and a direction-turning device is arranged in the direction-turning device groove and formed by a rotating shaft, a gear wheel, a cone, a locating ball, a spring, the locating plate, a locating sleeve and a wrench pin. Because the structure is adopted, the special bolt driver for the bone screw can be detachably stored, is beneficial to carrying and disinfection, and has the advantages of novel structure, fastness, reduction of patient pains, convenience for installation and disassembling and the like.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a special screwdriver used in conjunction with bone screws. Background technique [0002] Locking plates and locking screws are often used clinically in orthopedics. Locking screws are composed of a nail body and a nail cap. The nail body is usually thin and short, the nail cap is thin, and the groove on the nail cap is shallow. When removing the locking plate, it is necessary to Use a screwdriver to take out the locking screws fixed on the locking plate. During the process of removing the screws, some locking screws may be fixed due to the long internal fixation time or because the orthopedic doctor used too much force when tightening the locking screws with the screwdriver, resulting in Difficulty in removing the screw is not uncommon in clinical practice, and there is no better method for this clinically. Some use an industrial drill to drill off the screw cap, re...

Claims

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Application Information

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IPC IPC(8): A61B17/92
Inventor 鞠传宝初海滨姜秀娟殷泽刚徐道志
Owner 鞠传宝
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