Array three-layer circular composite film

Abstract

The invention provides an array three-layer circular composite film which comprises an elastic layer, a medicine layer and a guiding layer from interior to exterior. The elastic layer is a dense degradable or non-degradable biological film, the medicine layer packs a medicine sustained release system having the promoting effect on sclerotin healing, the medicine layer is made of degradable or absorbable materials with the good biological compatibility with human sclerotin, the guiding layer is made of degradable or non-degradable and absorbable or non-absorbable porous bulk materials with thegood biological compatibility with human sclerotin, the biological film is of a structure arrayed by unit biological particles, the bottoms of the unit biological particles are arranged at the interval being 3-5 mm, the unit biological particles are of a long strip shaped folding structure, the section is in a U shape, the elastic layer is arranged inside, the medicine layer is arranged on the outmost layer, the ratio of the width to depth of the U-shaped section is 0.5-1.5, and the width is the interval between spliced broken bone surfaces after facture surgical treatment.

Description

technical field [0001] The invention relates to an array three-layer circular composite film. Background technique [0002] At present, it is a frontier field of medical research to use a biocomposite film containing growth factors / stem cells to stick to the fracture line to enhance the speed and quality of fracture healing. There are blood vessels and bone cells distributed on the inner surface of the fracture line (anastomosis line), and whether the healing is good depends on the growth of blood vessels and bone cells in the fracture line. The reason why biofilm sticking to the surface of fracture anastomosis can increase the quality of fracture healing is that on the one hand, the drugs encapsulated in the biofilm can promote the growth of blood vessels and bone cells in the fracture anastomosis, and on the other hand, the biological The membrane isolates external muscles and other human tissues from the fracture anastomotic line, and prevents the reaction of human tissu...

AI Technical Summary

Problems solved by technology

[0004] 1. The biocomposite membrane has a relatively large volume area and a small fracture area, and 2 cannot be effectively fitted and fixed together

[0005] 2. The limitations of the current biocomposite membrane materials and manufacturing process lead to performance indicators such as the degradation rate of the biocomposite membrane and the time for the carried growth factors to release the effective drug concentration (the duration of the effective concentration is the key to the healing quality of the fracture line) Unable to meet clinical needs

Images