Needle rod component used for bone fixation, and bone external fixation system
A bone fixation and needle fixation technology, which is applied in the field of medical devices, can solve problems such as prone to inflammation, and achieve the effects of preventing needle tract infection, reducing friction, and high reliability
Pending Publication Date: 2021-03-26
上海联影智融医疗科技有限公司
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Problems solved by technology
[0003] Based on this, it is necessary to provide a bone fixation needle bar assembly and a bone external fixation system that can effectively inhibit the inflammation of the needle tract in view of the problem of easy inflammation in the general bone external fixation system.
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[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...
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The invention relates to a needle rod component used for bone fixation. The needle rod component comprises a fixation needle, a dressing and a pressure regulation structure, wherein the fixation needle is provided with a first connecting end and a second connecting end; the first connecting end can penetrate through a needle passage arranged on the skin and the flesh of a patient and is fixedly connected with the bone of the patient; the second connecting end is used for being fixedly connected with an in vitro connecting element; the dressing can be arranged on the opening of the needle passage of the patient, and is adjustable along the axial position of the fixation needle; and the pressure regulation structure is arranged between the dressing and the fixation needle and is elasticallyabutted against the dressing. The invention also relates to a bone external fixation system comprising the above needle rod component used for the bone fixation. The above needle rod component used for the bone fixation and the bone external fixation system can keep pressing force of the dressing for the skin tissues of the patient to be within a certain range so as to reduce friction between thefixation needle and the skin tissues during the limb activity of the patient, meanwhile, and medicines in the dressing can perform a continuous anti-bacterial function or a continuous bacteria-killingfunction for the needle passage so as to avoid physical inflammations and biological inflammations from the source.
Description
technical field [0001] The invention relates to the technical field of medical instruments, in particular to a needle bar assembly for bone fixation and a bone external fixation system. Background technique [0002] Compared with the internal bone fixation system, the external bone fixation system has the advantages of simple operation and less surgical trauma, but the fixation needle in the external bone fixation system passes through the skin tissue and connects with the patient's bone, which may easily cause bacterial infection of the needle tract, and in severe cases, it may induce osteomyelitis. External fixation system inflammation is mainly divided into physical inflammation and biological inflammation, in which physical inflammation is mainly caused by the friction between the needle and the skin and the skin tissue around the needle tract is compressed, while biological inflammation is mainly caused by the invasion and growth of bacteria around the needle tract Mos...
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IPC IPC(8): A61B17/66A61F13/02
CPCA61B17/66A61F13/02A61F2013/00906A61F2013/0091A61F2013/00578
Inventor 徐寒冬单存清
Owner 上海联影智融医疗科技有限公司