Design And Study Of An Enhanced Balloon Expandor Using In Percutaneous Vertebroplasty

With the population aging to intensify, the numbers of the patients of osteoporotic vertebral compression fractures (VCFs) are more and more. Orthodox treatment of these fractures includes bed rest, orthotics, analgesic medication and so on. It easiler results in more significant osteoporosis and infernal circle. Open operation treatment is given limitation because of the patients with severe osteoporosis and general state of health. For the past few years, original minimally invasive techniques,such as vertebroplasty and kyphoplasty, have beening come out one after another. In developed nations of North America and so on, they have gained challenging therapeutic effect and open up a firenew route for the treatment of senile osteoporotic vertebral compression fractures. Percutaneous vertebroplasty (PVP) is a firenew minimally invasive technique and cracking growing, which is used in treatment of osteoporotic vertebral compression fractures in recent years. It consists of percutaneous injection of biomaterial, such as methylmethacrylate, into the vertebral compression fractures to produce stability, prevent collapse and pain relief. However, the vertebroplasty does not restore lost vertebral body(VB) height , reduce the associated kyphosis and easily leak bone cement. Kyphoplasty(PKP) is a modification of vertebroplasty. It involves the percutaneous placement of balloons...