3D printing flexible socket with adaptability

Abstract

The invention discloses a 3D printing flexible socket with adaptability. The socket comprises a socket inner cavity and a socket shell, the inner cavity and the shell of the socket adopt 3D printing for integrated molding, and the printing material is a continuous fiber reinforcement composite material; the socket has the flexibility, the elastic modulus of the material used for making the socketis variable in the axial and radial gradient, and by adjusting technological parameters of 3D printing, the socket which has the elastic modulus gradient change and can achieve adaptability is manufactured. Accordingly, a prosthetic socket is prepared by adopting the continuous fiber composite printing mode, the weight is reduced, the strength is improved, and meanwhile by adopting the flexible design, the comfort degree of a stump of the part where a user making contact with the prosthetic socket is improved; integrated printing can improve the anastomosis degree of the socket inner cavity and the socket shell conveniently, the comfort degree of prosthetic wearing is increased, the preparation process time is shortened, and the manufacturing cost is greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an adaptive 3D printed flexible socket. Background technique [0002] The socket is the most important part of the prosthesis. It is in direct contact with the residual limb, accommodates the residual limb, contains the soft tissue of the residual limb, supports the weight of the human body, and controls the movement of the prosthetic limb. [0003] The bottom of the suction socket is not in contact with the stump, and there is a suction space between them, which is closed with a suction valve. The negative pressure generated by the sorption space is one of the mechanisms of this socket suspension. Under the effect of sucking negative pressure, the blood stays in the stump, which is easy to cause congestion and edema of the stump, and cause damage to the amputee. Since the stump is not in contact with the socket, the contact area between the residual limb an...

AI Technical Summary

Problems solved by technology

At present, many people have adopted 3D printing to make sockets, but it can only solve the problem of individualization. Whether the fit is complete or not depends to a certain extent on the technician's experience, techniques, skills and other factors, and it is difficult to guarantee the accuracy.

According to the feedback from many amputees, the prosthetics installed in different postures of the amputee do not have certain applicability. For example, when the patient is sitting in a sitting position and the prosthesis is installed and adjusted, due to the different degrees of muscle contraction, standing up and walking will cause discomfort; standing After installing and adjusting the prosthetic limbs, the sitting posture will also cause discomfort

Moreover, the hardness of the material used in the socket is fixed and single, which aggravates the discomfort of wearing the prosthesis

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