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Spicule pressurizing system

A technology of bone needle and compression nut, applied in the field of medical devices, can solve the problems of easy loosening and slipping, fixation failure, etc., and achieve the effect of easy removal

Pending Publication Date: 2018-06-19
董谢平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The Kirschner wire tension band technique is a common technique for the treatment of patella fractures, olecranon, medial humeral condyle, clavicle and other fractures, but the usually used Kirschner wires are smooth and cylindrical, easy to loosen and slip off, resulting in failure of fixation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: When the pressurized bone pin system is used for open reduction and tension band steel wire internal fixation of patella fractures, after open reduction of the patella and temporary fixation with point-like reduction forceps, etc., use an electric drill to clamp the middle and rear parts of the bone pins, and use the front end to fix the patella. With a sharp cone, drill two bone needles from the inner and outer upper poles of the patella, run through the patella longitudinally, and pass through the inner and outer lower poles until the through holes of the two bone needles pass through the lower poles. The spicules remain parallel. Then use the head end of a steel wire to pass through the through holes of the two bone needles successively, bend upwards, and wind obliquely upwards at the inner or outer upper pole of the patella until it first passes through the back of the bone needles, and then winds on the same plane. Pass through the front of the bone need...

Embodiment 2

[0018] Example 2: When the pressurized bone needle system is used for open reduction and intramedullary nail fixation of clavicle fractures, the tail end of the bone needle can be penetrated from the broken end of the bone into the medullary cavity at the distal fracture end, and the pointed cone at the tail end can be used to penetrate the clavicle The cortical bone at the rear of the outer end and pass through the skin from the back of the shoulder; or the tail end of the bone needle is inserted into the medullary cavity at the proximal folded end from the broken end of the bone, and the tip of the tail end is used to penetrate the cortical bone at the front of the inner end of the clavicle and pass out from the front of the chest skin. Then reset the fracture end, hold the tail end of the bone needle with an electric drill, and in turn use the pointed cone at the head end to penetrate the bone needle into the medullary cavity at the other end of the fracture and nail it to t...

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Abstract

A spicule pressurizing system capable of preventing loosening is composed of circular spicules and matched pressurizing nuts, wherein the two ends of the circular spicules are each provided with a thread and a pointed cone. Each front end thread is short, a through hole for a steel wire to penetrate through transversely runs through the rear end of each circular spicule, and a retreating groove easy to break is formed between the thread and the through groove; each rear end thread is long, and the large diameter of the thread is equal to the diameter of a polished rod of the corresponding spicule. During the internal fixation of a tension band steel wire for a patella fracture, the steel wire can penetrate through the through holes of the front ends of the two spicules on a patella lower pole and then be folded back and crossed to be wound around the spicule of a patella upper pole to be screwed and fixed in an 8-shaped mode; in addition, the fixed steel wire and the patella upper poleare squeezed by the two pressurizing nuts, the two ends of the spicules are broken or cut off, and then the firm fixation free of spicule tip stimulation and looseness and beneficial for spicule taking can be achieved; when the spicule pressurizing system is used for the internal fixation of a clavicle fracture intramedullary needle or the humerus pl humeri medial malleolus fracture fixation or other fixation modes where the front end of a spicule does not need to penetrate through opposite side bone cortex, through the combination of the rear pressurizing nuts and the front end threads, it can be avoided that the spicules get loose and slip out forward or backward.

Description

technical field [0001] The invention relates to a medical device, in particular to a pressurizable bone needle system. Background technique [0002] The Kirschner wire tension band technique is a common technique for the treatment of patella fractures, olecranon, medial humeral condyle, and clavicle fractures. However, the Kirschner wires usually used are smooth and cylindrical, which are easy to loosen and slip off, resulting in failure of fixation. Contents of the invention [0003] The object of the present invention is to provide a bone needle system capable of applying pressure to the broken bone and preventing slippage. [0004] In order to realize the purpose of the present invention, the technical scheme adopted in the present invention is: [0005] The compression spicule system consists of a circular spicule and a compression nut. The front end of the bone needle is tapered, the rear end is threaded, and the middle section is a smooth round rod; the compression...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/68A61B17/86A61B17/82A61B17/88
CPCA61B17/683A61B17/82A61B17/8605A61B17/8625A61B17/8861A61B17/8897A61B2017/564
Inventor 董谢平朴成哲
Owner 董谢平
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