Degradable fracture internal fixation body

Abstract

The invention discloses a degradable fracture internal fixation body which is mainly formed by a fixing plate and a plurality of fixing ribs, wherein the fixing plate is shaped like a long strip, the radial section of the fixing plate is circular or oval, and a plurality of small holes are formed in the fixing plate; and the fixing ribs are C-shaped, one ends of the fixing ribs are connected with the fixing plate and arranged on two sides of the fixing plate, the other ends of the fixing ribs are connected with each other through outside fixing plates. The degradable fracture internal fixation body has the advantages that after the fracture internal fixation body is heated on the whole to be softened, the fracture internal fixation body accords with a bone in shape, the fixing plate serves as a support body, the fixing ribs serve as wrapping bodies, the outside fixing plates serve as auxiliary support bodies and wrapping bodies, a broken bone is fixed through a mode of wrapping the bone on the whole, the fastening degree is high, displacement of the broken bone can be effectively prevented, sclerotin is not damaged, and safety and reliability are achieved; and the fracture internal fixation body is made of degradable materials, has good strength and biocompatibility, can be degraded into harmless materials to be discharged of a human body after a period of time in the human body, and is needless of being taken out through a secondary operation.

Description

technical field [0001] The invention relates to the field of medical device materials, in particular to a fracture internal fixer that can be harmlessly degraded in vivo. Background technique [0002] At present, the most widely used fracture internal fixation bodies are mostly made of metal alloys, such as screws, steel plates, steel wires or bone plates made of stainless steel and titanium alloys, etc. to directly connect and fix the broken bones in the broken bones. It mainly has the following defects and deficiencies: a second operation is required to take it out, not only the patient suffers a lot of trauma, but also suffers a lot of physical and mental pain, and the operation cost is high, and it also has certain risks; at the same time, due to the metal The elastic modulus of the alloy is much greater than that of human bones, which will destroy the normal stress environment of human bone healing, not only hinder the rapid formation of callus at the fracture site, but...

AI Technical Summary

Problems solved by technology

[0002] At present, the most widely used fracture internal fixation bodies are mostly made of metal alloys, such as screws, steel plates, steel wires or bone plates made of stainless steel and titanium alloys, etc. to directly connect and fix the broken bones in the broken bones. It mainly has the following defects and deficiencies: a second operation is required to take it out, not only the patient suffers a lot of trauma, but also suffers a lot of physical and mental pain, and the operation cost is high, and it also has certain risks; at the same time, due to the metal The elastic modulus of the alloy is much greater than that of human bones, which will destroy the normal stress environment of human bone healing, not only hinder the rapid formation of callus at the fracture site, but also may cause complications such as osteoporosis and bone atrophy. Cause re-fracture; in addition, the implanted metal device will affect the patient to perform CT and other examinations

In addition to metal fracture fixation bodies, the existing fracture fixation bodies made of degradable materials mostly use plastic screws embedded in the bone marrow and other components. The molding process is complicated, the production is inconvenient, and the operation process is also complicated. It will damage the bone again, causing great trauma and sequelae to the patient; some fit-type fixators also have the disadvantage of unreliable fixation

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