A kind of 3D printing lower limb prosthesis socket bushing and its making method

Abstract

The invention discloses a 3D-printed lower limb prosthetic receptacle inner liner. The 3D printed lower limb prosthetic receptacle inner liner comprises a condom bottom and a condom body. The sleeve bottom is connected with the sleeve body. Any one or any combination of popliteal fossa area or console, thigh root area to increase thickness. At the same time, the present invention also provides a method for manufacturing a 3D printed lower limb prosthetic socket inner liner. The receptacle inner liner of the invention can fit the residual limb of the patient to enhance the comfort; meanwhile, it is beneficial to increase the buffering effect, wearing comfort and the suspending effect of the prosthesis when the patient is walking.

Description

technical field [0001] The invention relates to the technical field of assistive devices for the disabled, in particular to a 3D printed lower limb prosthetic socket inner liner and a manufacturing method thereof. Background technique [0002] The lower limb prosthesis socket is one of the most important components of the lower limb prosthesis. The socket is composed of an external hard shell and an inner lining with a certain flexibility. The socket lining plays an important role in it. contact, and together with the outer hard shell support the body weight, effectively transmitting the associated forces to the distal end of the prosthesis. [0003] Whether the lining of the prosthetic socket is suitable or not directly affects the wearing comfort of the prosthesis and the overall function of the prosthesis, and is a very critical component in the prosthesis. [0004] The traditional lower limb prosthetic receptacle liner, various production techniques have their advantage...

AI Technical Summary

Problems solved by technology

[0004] Traditional lower limb prosthetic socket liners, various production techniques have their advantages, but there are also unavoidable defects: the traditional silicone liner and gel liner rely on negative pressure to absorb the liner on the residual On the limbs, it plays the role of suspension. The silicone lining and gel lining have relatively low technical requirements for orthopedists. Silicone and gel have a better affinity for human skin, but silicone lining and gel The rubber liner is airtight, and because of the negative pressure, it will oppress the nerves of the residual limb for a long time, which will easily cause skin problems of the residual limb and accelerate the atrophy of the residual limb; while the inner liner made of traditional prosthetic sponge has lower material cost, but Orthopedists need manual splicing. There are many splicing marks on an inner liner, and the comfort of the seams is poor when worn. In addition, the traditional prosthetic sponge has poor resistance to compression deformation and poor resilience. After a period of use, it will be flattened and lost. Elasticity increases the gap between the residual limb and the inner liner, further increasing the discomfort of wearing

[0005] The above traditional prosthetic inner liner, when the residual limb shrinks, not only the inner liner needs to be replaced, but also the part connecting the hard shell of the cavity needs to be replaced together, which is costly for the prosthetic user.

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