Metal tennis balled vertebrae shaping apparatus

Abstract

In order to effectively stretch and compress the fractured vertebral body, the patent of the present invention provides a new type of metal tennis vertebral body shaping device, including: vertebral body puncture needle, guide pin, working cannula, working cannula handle, metal tennis ball, metal tennis ball expansion and recovery system. The metal tennis ball is made into a spherical or elliptical shape by cross-winding high-elastic metal wires. Pulling the support rings at both ends can elongate the metal tennis ball into a slender shape. The metal tennis ball is sent into the vertebral body through the metal tennis expansion and recovery system, and then Squeezing the support rings at both ends can return to the original shape and generate a huge stretching force, which can effectively stretch the compressed vertebral body, and then pull the support ring to elongate the metal tennis ball into a slender shape and then withdraw from the vertebral body. Refill with bone cement or other vertebral reinforcement. The support rings at both ends of the metal tennis ball can also be fixed and retained in the vertebral body to form a "reinforced cement" structure with the filling material. So as to achieve the purpose of supporting, fixing and compressing the fractured vertebral body, relieving pain and returning to normal activities early.

Description

technical field [0001] The invention patent belongs to medical equipment. It is mainly used for the reduction of vertebral body compression fractures caused by osteoporosis or tumors, and enters the vertebral body through the pedicle or the outside of the pedicle to expand the compressed vertebral body. Background technique [0002] With the increase of the elderly population in society, osteoporotic vertebral compression fractures are increasing year by year. At present, there are about 200 million osteoporosis patients in the world, and there are 50 million people in my country. The prevalence rate of women over 50 years old reaches 50-70%, and the incidence rate of elderly men reaches 30%. Osteoporosis among people over 70 years old The incidence rate of vertebral body compression fractures is 20%, the incidence rate of postmenopausal women is 16%, and the incidence rate of vertebral body compression fractures in women over 50 years old in Beijing area is 15%. There are ...

AI Technical Summary

Problems solved by technology

However, vertebroplasty cannot make the compressed vertebral body stretch and reduce, and 30%-70% of patients have bone cement epidural or paravertebral leakage

Kyphoplasty uses the balloon to expand and compress the vertebral body, restore the height of the vertebral body, reduce kyphosis, form a cavity in the vertebral body, and inject bone cement at low pressure to reduce leakage, but the sharp bone edge often punctures the balloon. Moreover, the balloon cannot be stretched in a directional way, and often escapes into the empty and weak area, resulting in the failure of the compressed vertebral body to stretch, and the recovery of the vertebral body is limited in strength

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