Series-parallel connection type shape memory alloy vertebral body support

Abstract

The invention provides a series-parallel connection type shape memory alloy vertebral body support, which belongs to the technical field of medical instruments, and comprises a plurality of parallel connection single bodies connected in series, each parallel connection single body comprises a plurality of support single bodies, and the support single bodies are connected in parallel in a crossed mode to form one parallel connection single body. The parallel monomer is made of a shape memory alloy material meeting the biocompatibility requirement, so that the parallel monomer can be in a contracted state or an expanded state at different temperatures. The support is simple in structure, convenient to operate and use and capable of being used in cooperation with an existing universal outer sleeve vertebral body forming instrument, the economic cost is obviously reduced, the effect of supporting the vertebral body can be achieved only through the support, bone cement does not need to be filled, and therefore the leakage problem of the bone cement is avoided; burning damage of bone cement to nerves and other tissues is effectively prevented, surgical pain of a patient can be effectively relieved, and postoperative complications of the patient are reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a series-parallel shape memory alloy vertebral body support. Background technique [0002] With the advent of an aging society, the incidence of osteoporotic fractures increases year by year, and the vertebral body is the most prone to fractures in osteoporosis. According to reports in the United States, about 1.5 million patients suffer from fractures due to osteoporosis each year, among which there are 700,000 cases of vertebral compression fractures, and there is a trend to continue to increase. Among them, 1 / 3 of the patients have chronic pain, and most of them have chronic pain. for older women. According to the population ratio, about 4 million people in my country suffer from osteoporotic compression fractures every year, of which more than 1.7 million people are accompanied by pain, and 700,000 people need to be hospitalized for treatment. For a long time, for e...

AI Technical Summary

Problems solved by technology

However, polymethyl methacrylate (PMMA), the most commonly used bone cement filler, has inherent disadvantages such as monomer toxicity, heat generation and leakage, and cannot be applied to young people.

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