A nanofiber-reinforced absorbable bone internal fixation material and its preparation method

Abstract

The invention provides a nanofiber-reinforced absorbable bone internal fixation material and a preparation method thereof. The nanofiber-reinforced bone internal fixation material is mainly composed of biodegradable polymer materials, nanofibers and artificial bone materials; wherein the surface of the nanofibers is modified or modified, and the content of the nanofibers accounts for 1% of the material. 10-20% of the total weight; the content of the biodegradable polymer material accounts for 60-80% of the total weight of the material; the artificial bone material accounts for 10-20% of the total weight of the material. The nanofiber-reinforced absorbable bone internal fixation material of the present invention overcomes the multi-scale fracture characteristics of common bone internal fixation materials; the nanofiber has the characteristics of large specific surface area, high porosity, strong modification ability and high elastic modulus, which greatly improves Improve the mechanical properties of absorbable bone internal fixation materials, and at the same time further promote bone resorption and bone ingrowth, and speed up postoperative recovery.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a nanofiber-reinforced absorbable bone internal fixation material and a preparation method thereof. Background technique [0002] With the iterative update of medical technology, although traditional metals have high mechanical strength and fatigue resistance, which can meet the performance requirements of clinical operations, metal materials cannot be degraded in the body after they are implanted into the human body. Afterwards, a second operation is required to remove it, causing secondary injury to the patient. In recent years, absorbable fixed grafts have received extensive attention due to their unique advantages, but there are also a series of problems, but compared with other non-absorbable materials, they also have certain limitations, such as poor crack resistance, low toughness, and brittleness. Obviously, the degradation rate is not consistent with the bone ...

AI Technical Summary

Problems solved by technology

[0002] With the iterative update of medical technology, although traditional metals have high mechanical strength and fatigue resistance, which can meet the performance requirements of clinical operations, metal materials cannot be degraded in the body after they are implanted into the human body. Afterwards, a second operation is required to remove it, causing secondary injury to the patient.

In recent years, absorbable fixed grafts have received extensive attention due to their unique advantages, but there are also a series of problems, but compared with other non-absorbable materials, they also have certain limitations, such as poor crack resistance, low toughness, and brittleness. Obviously, the degradation rate is inconsistent with the bone ingrowth rate, etc., to a certain extent, it affects the appearance and service life of the absorbable fixation material, and the most important thing is that it will seriously threaten the life safety of patients.

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