Pump for slowly promoting nerve growth

Abstract

The invention discloses a pump for slowly promoting nerve growth, and particularly relates to the field of biomedical application. The pump comprises a tube body, the tube body comprises a semi-permeable membrane layer, a slow release layer and an impermeable membrane layer, the slow release layer is arranged at the periphery of the impermeable membrane layer, and the semi-permeable membrane layeris arranged at the periphery of the slow release layer; the semi-permeable membrane layer comprises a semi-permeable membrane and a protective layer, the protective layer is located on the peripheryof the semi-permeable membrane, the protective layer comprises an annular support and a cylindrical support, and the annular support is fixedly arranged on the periphery of the cylindrical support; and a plurality of groups of isolating membranes penetrate through the interior of the slow release layer, are arranged around the periphery of the impermeable membrane layer, and comprise elastic fibers and reinforcing fibers. By arranging the semi-permeable membrane layer, the slow release layer and the impermeable membrane layer, the stretching effect on damaged neurons is more uniform, the growth of damaged neurons can be prolonged through repeated micro-damage repairing, irritation to the damaged neurons is low, and growth and recovery of the neurons can be better promoted.

Description

technical field [0001] The present invention relates to the field of biomedical applications, and more specifically, the present invention relates to a pump for slowly promoting nerve growth. Background technique [0002] The repair and reconstruction of peripheral nerve injury is one of the clinical problems. For nerve defects less than 3cm, in situ nerve suture by flexing the joint or freeing a certain length of nerve trunk to extend the nerve is often used; Nerve defect, autologous nerve transplantation is considered to be the treatment of choice. [0003] However, simple nerve suture may inhibit axon regeneration due to excessive tension, and direct nerve suture has a certain rate of wrong growth, while autologous nerve transplantation also has problems such as lack of donors and multiple operations; nerve stretching is the use of The irregular progression of peripheral nerves, the original undulating curvature and inherent elasticity, can gain extra length after stretc...

AI Technical Summary

Problems solved by technology

[0003] However, simple nerve suture may inhibit axon regeneration due to excessive tension, and direct nerve suture has a certain rate of wrong growth, while autologous nerve transplantation also has problems such as lack of donors and multiple operations; nerve stretching is the use of The irregular progression of peripheral nerves, the original undulating curvature and inherent elasticity, can gain extra length after stretching, which can be used to overcome minor nerve defects; peripheral nerves are very sensitive to stretch damage, acute stretch or subtonic nerves In addition to the damage caused by stretch stress and blood circulation disorder to peripheral nerves, the barrier function of nerves is also an important factor leading to nerve function damage and the difficulty of recovery after nerve repair.

Images