Regulation and control method of mechanical strength of natural biologic material products

Abstract

The invention discloses a regulation and control method of mechanical strength of natural biologic material products. A final product is obtained by the treating steps of freezing and drying, compression, crosslinking and secondary drying on natural biologic material solution. The treating method adopts the controllable compression step for a primary product after freezing and drying, thereby controlling the density of a porous material product, reducing the porosity of the porous material product and controlling the mechanical performance of the final product by the step. Meanwhile, the adopted method does not influence the biologic performance of the initial natural biologic material, thereby still keeping better biologic activity of the final product.

Description

technical field

[0001] The invention relates to a tissue repair substitute material, in particular to a method for regulating the mechanical properties of high natural polymer porous material products. Background technique

[0002] With the development of modern society, there are more and more tissue damage problems caused by various reasons. Such as skin injuries caused by burns, scalds, knife wounds, firearm injuries, etc., limb blood vessel and nerve injuries caused by traffic accidents, loss of surrounding tissues caused by tumor resection, and articular cartilage and meniscus damage caused by sports injuries and pathological injuries. damage etc. There are various reasons for the injury, and the final result is the damage of connective tissues such as articular cartilage, meniscus, skin, blood vessels and nerves. Small-area, small-scale, low-injury tissue damage can be repaired automatically by the human body through the mobilization of autologous tissues and cells. ...