A bone needle structure for external fixation

Abstract

The invention relates to an externally fixed bone needle structure, which comprises a metal needle body, a tail cap, a L-polylactic acid needle and an L-polylactic acid inner core. The metal needle body is a hollow tubular structure, and the inner surfaces of the front end and the end of the metal needle are evenly distributed with connecting threads , the side wall of the front half of the metal needle body is evenly distributed with a number of through holes, the rear end surface of the L-polylactic acid needle is embedded in the front surface of the metal needle body and connected with the metal needle body through the connecting thread, and the front end surface of the tail cap is embedded in the rear end surface of the metal needle body It is connected with the metal needle body through the connecting thread, the metal needle body, the tail cap, and the L-polylactic acid needle jointly seal the bearing cavity of the structure, the L-polylactic acid inner core is embedded in the bearing cavity, and the tail cap includes a metal bearing shell and an elastic sealing block. On the one hand, the present invention has good structural strength; on the one hand, it can effectively promote the speed of bone healing; The patient's wound caused secondary injury.

Description

technical field [0001] The invention relates to a bone needle structure, specifically a bone needle structure for external fixation. Background technique [0002] At present, in order to reduce the risk of wound infection and flexibly administer medication to patients’ wounds according to the needs of bone positioning and bone wound healing through bone targeting, a bone needle structure with both a hollow structure and an infection-proof tail cap has been developed. The bone-like needle can also be used in conjunction with the external syringe light equipment through the anti-infection tail cap. For example, the invention patent with the application number "201611207752.0" discloses a bone needle structure of this type, but it is found in use that, The current bone needles are often made of titanium, titanium alloy, stainless steel and other metal materials. Although the structure is strong and relatively light, on the one hand, due to the poor affinity between metal human ...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to reduce the risk of wound infection and flexibly administer medication to the patient's wound according to the needs of bone positioning and bone wound healing through bone targeting for patients, a bone needle structure with both a hollow structure and an infection-proof tail cap has been developed. The bone-like needle can also be used in conjunction with the external syringe light equipment through the anti-infection tail cap. For example, the invention patent with the application number "201611207752.0" discloses a bone needle structure of this type, but it is found in use that, The current bone needles are often made of titanium, titanium alloy, stainless steel and other metal materials. Although the structure is strong and relatively light, on the one hand, due to the poor affinity between metal human bones and muscle tissues, it seriously affects the The recovery speed of the patient's wound healing, and because the structure of the bone needle is relatively fixed, as the patient's wound recovers, the pressure and friction between the bone needle and the patient's bone and muscle tissue will increase, which will cause the bone needle to be pulled out when it is pulled out. It is difficult, complicated to operate, and has a large pull-out force, which can easily cause secondary damage to the patient's wound during the pull-out process of the bone needle. Therefore, in view of this situation, it is urgent to develop a new bone needle structure to meet practical needs

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