Vertebral compression fracture implantation filling-repairing device

Abstract

The invention provides a vertebral compression fracture implantation filling-repairing device, comprising a fabric sac that is of sub-gourd shape after being opened; the whole fabric sac is of mesh structure woven with polymer silk threads. Before implantation, there is no need for expanding a balloon, it is possible for direct implantation, bone cement may be injected into the device to repair physiological height of fracture collapsed vertebra to 90% and above, there is no need for a surgical process of bilateral puncture and bilateral balloon expansion, the surgical process is simplified, surgical time is shortened, and the pain and economic burden are decreased for a patient; the fabric sac of sub-gourd shape constrains bone cement in a vertebral cavity to form a double-ball shape, load-bearing area is enlarged, stress concentration is avoided, the problem that bone cement injection causes further vertebral damage is solved, and bone cement leakage is effectively controlled; in addition, the device is all made of polymer material having good biocompatibility, human body implantation safety and postoperative living quality of a patient are guaranteed.

Description

technical field [0001] The invention relates to the technical field of medical device design, in particular to an implant filling repair device for vertebral body compression fractures. Background technique [0002] Vertebral compression fracture (VCF) is a common spinal injury. At present, minimally invasive surgery is generally used to treat VCF. The idea is to first restore the physiological height of the collapsed and fractured vertebral body, and then implant materials to fill and strengthen the injured vertebral body. . The current mainstream surgical method is balloon kyphoplasty (PKP). This surgical method first uses a percutaneous puncture needle and a working cannula to establish a surgical channel, and then uses a bone drill to prefabricate the placement channel before balloon expansion. The balloon is pushed into the vertebral body, and the physiological height of the vertebral body is restored by expanding the balloon, and a cavity is formed in the vertebral bo...

AI Technical Summary

Problems solved by technology

Although this device solves the problem of bone cement leakage, the operation process is still cumbersome and introduces new problems: 1. The spherical structure device will cause stress concentration when filling bone cement, which may cause vertebral cracks to increase. Increases the probability of other complications; 2. The spherical structure will bind the bone cement into a spherical structure centered on the center of the ball, which cannot completely fill the cavity of the vertebral body, increasing the risk of secondary fractures of the vertebral body

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