Nanofiber-reinforced absorbable intraosseous fixation material and preparation method thereof

Abstract

The invention provides a nanofiber-reinforced absorbable intraosseous fixation material and a preparation method thereof. The nanofiber-reinforced absorbable intraosseous fixation material is mainly formed by compounding a biodegradable polymer material, nanofibers and an artificial bone material, wherein the surfaces of the nanofibers are modified; the content of the nanofibers accounts for 10-20% of the total weight of the material; the content of the biodegradable polymer material accounts for 60-80% of the total weight of the material; and the artificial bone material accounts for 10-20% of the total weight of the material. The nanofiber-reinforced absorbable intraosseous fixation material disclosed by the invention overcomes the defect that a common intraosseous fixation material is prone to multi-scale fracture; the nanofibers have the characteristics of large specific surface, high porosity, strong modification capability and high elastic modulus; the mechanical properties of the absorbable intraosseous fixation material is greatly improved; meanwhile, bone absorption and bone ingrowth are also further promoted; and the postoperative recovery process is accelerated.

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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