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A self-circulating dynamic hip screw system for femoral head decompression

A hip screw and femoral head technology, which is applied in the field of self-circulating dynamic hip screw system for decompression in the femoral head, can solve the problem of ineffective reduction of femoral head necrosis and the like

Active Publication Date: 2021-01-05
毛玉江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although standard DHS fixation has a good effect on the healing of femoral neck fractures, it cannot effectively reduce the occurrence of femoral head necrosis

Method used

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  • A self-circulating dynamic hip screw system for femoral head decompression
  • A self-circulating dynamic hip screw system for femoral head decompression

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Experimental program
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Effect test

Embodiment Construction

[0024] Such as Figure 1-2 As shown, the femoral head internal decompression self-circulation dynamic hip screw system includes a dynamic hip screw 1, a sleeve connecting plate 2 and a negative pressure and blood internal circulation device 3, wherein the dynamic hip screw 1 is provided with a liquid inlet hole, and the sleeve connecting plate 2 includes the fixing part, which is provided with a liquid outlet hole, the inlet of the negative pressure and internal blood circulation device 3 communicates with the liquid inlet hole of the dynamic hip screw 1 through the pipeline, and the outlet of the negative pressure and internal blood circulation device 3 passes through the pipeline It communicates with the liquid outlet of the fixing part; the negative pressure and blood internal circulation device 3 is installed on the sleeve connecting plate 2 .

[0025] Such as figure 1 As shown, the dynamic hip screw 1 includes a screw head 11 and a screw shaft 12, the screw head 11 is pr...

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Abstract

The invention discloses a self-circulating dynamic hip screw system for decompression in the femoral head. The system includes a dynamic hip screw, a sleeve connection plate and a negative-pressure and blood internal circulation device, wherein the dynamic hip screw is provided with liquid inlets, the sleeve connection plate is provided with discharge holes, an inlet of the negative-pressure device is connected with the liquid inlets of the dynamic hip screw, and an outlet of the negative-pressure device is connected with the discharge holes of the sleeve connection plate. A feed pipe, a circulating pump and discharge pipes form a circulation device to guide blood in the femoral head into a distal femoral medullary cavity. Through the system, after the dynamic hip screw system completes collum femoris fracture fixation, the pressure in the femoral head is reduced through self-circulation of blood in the femoral head, the blood supply of the femoral head and the growth of new blood vessels are promoted, and the system can prevent femoral head necrosis.

Description

technical field [0001] The invention relates to a medical device, in particular to a self-circulating dynamic hip screw system for internal decompression of the femoral head. Background technique [0002] Femoral neck fracture is a common fracture in clinical orthopedics, and it is almost a fracture with the most complications. Necrosis of the femoral head is its most serious complication, with a high incidence rate, especially in young people, which can be as high as 30-50%, often leading to disability. The cause of femoral head necrosis is generally believed to be related to the special blood supply characteristics of the femoral head, especially the destruction of the blood supply of the femoral head after fracture and the high pressure in the femoral head caused by poor venous return. Currently there is no effective way to prevent osteonecrosis of the femoral head. Dynamic Hip Screw (DHS, Dynamic Hip Screw) is the first recommended internal fixation method for unstable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/76A61B17/86
CPCA61B17/74A61B17/744A61B17/86
Inventor 毛玉江其他发明人请求不公开姓名
Owner 毛玉江
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