Implantable prosthetic device capable of lengthening amputation stump at middle-upper section of femur

Abstract

The invention discloses an implantable prosthetic device capable of lengthening an amputation stump at the middle-upper section of a femur. The implantable prosthetic device comprises a first intraosseous implantation part and a second intraosseous implantation part, the second intraosseous implantation part is telescopic, the second intraosseous implantation part comprises a traction section anda driving section, in a use state, the first intraosseous implantation part penetrates through the vertex of a femoral trochanter to extend to the femoral section, a screw is arranged on the lower portion of the second intraosseous implantation part, the second intraosseous implantation part penetrates through the femur, the traction section is fixed to the femur, the driving section is in slidingconnection with the traction section, The upper end of the driving section abuts against the first intraosseous implantation part, and the lower end of the driving section extends out of the stump. By means of the device, for limb shortening caused by various reasons clinically, bone lengthening can be conducted through a bone carrying technology provided by an orthopedist llizarov, and the problem of limb shortening is solved through a tissue tension stress rule; the problem of continuous amputation in a later period can be completely eradicated, and pain and economic burdens of a user are greatly relieved; and a connecting structure enables a prosthesis to be firmly connected with the stump femur.

Description

technical field

[0001] The invention belongs to the field of artificial limbs, and in particular relates to an implantable artificial limb device with an extendable amputation stump of the middle and upper part of the femur. Background technique

[0002] With the development of modern industry and transportation, the incidence of limb amputation is increasing year by year due to high-energy damage caused by limb damage. High-adaptive prosthetics have become a research hotspot and difficulty. Traditional socket prostheses have the following problems: 1. Residual limbs Negative pressure connection with the socket, the interface between the socket and the residual limb is prone to odor; 2. The stump bears heavy friction, which leads to the rupture of the residual limb, which is easy to cause infection and often requires repeated amputation; 3. The load-bearing method does not conform to human biomechanics Alignment, showing a prosthetic gait; 4. The range of motion is limited, ...

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