Degradable rib fixator

Abstract

A degradable rib fixator relates to a medical instrument, is adjustable in size, degradable in the human body, free of damage to bone mass, free of secondary surgery, simple in forming process, convenient in surgical operation and safe and reliable, and is provided with a center ridge plate and lateral fixing claws. A plurality of cylindrical holes are arranged at the center of the center ridge plate, and the lateral fixing claws are distributed on the left side and the right side of the center ridge plate. The tip end faces of the lateral fixing claws are circular preferably, and cross parts of the lateral fixing claws are arc-shaped. The center ridge plate and the lateral fixing claws are integrated by injection molding and are made of biomedical high-polymer poly-L-lactic acid with fine biological compatibility and degradable in the human body.

Description

technical field [0001] The invention relates to a medical device, in particular to a degradable rib fixator used in fracture surgical treatment. Background technique [0002] At present, most of the clinically used rib fixators are made of metal, and there are three main defects and deficiencies: first, the metal material is easy to form a primary battery in body fluids, causing chemical corrosion, and cannot exist stably in the body for a long time. Removing it by surgery will not only cause a lot of trauma to the patient, but also cost a lot of money. Second, metal rib fixators generally need to insert screws into the ribs or bind wires to the ribs to achieve the purpose of fixing the injured ribs. Therefore, whether it is a screw or a wire, it will cause different degrees of damage to the bone of the rib; third, the metal material is dense and heavy, and it is easy to cause discomfort to the patient if it is fixed on the patient's rib. Chest tightness, chest pain, etc., ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the clinically used rib fixators are made of metal, and there are three main defects and deficiencies: first, the metal material is easy to form a primary battery in body fluids, causing chemical corrosion, and cannot exist stably in the body for a long time. Removing it by surgery will not only cause a lot of trauma to the patient, but also cost a lot of money. Second, metal rib fixators generally need to insert screws into the ribs or bind wires to the ribs to achieve the purpose of fixing the injured ribs. Therefore, whether it is a screw or a wire, it will cause different degrees of damage to the bone of the rib; third, the metal material is dense and heavy, and it is easy to cause discomfort to the patient if it is fixed on the patient's rib. Chest tightness, chest pain, etc., and even cause the overall distortion of the injured rib

The non-degradable rib fixator is mainly made of polytetrafluoroethylene. Although it has good chemical stability, it is not degradable in the body, which affects its further clinical application; the degradable rib fixator is currently It is still in the research stage, and most of the bone marrow-embedded plastic screw parts are used. Not only the molding process and operation process are complicated, but also the embedded plastic screw will damage the bone again, which will bring great trauma and sequelae to the patient.

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