Disposable type bone cement forming die

Abstract

The present invention relates to a disposable type bone cement forming die including a die holder, a die core is arranged in the die holder, and a die cavity is distributed between the die holder and the die core. The die is characterized in that a locking column is distributed on the die holder, a gland is distributed above the die holder, and a gland nut is mounted on the gland. An injection channel communicated with the die cavity is arranged in the die holder. The die cavity includes lobe-shaped flow divided pipes, lobe-shaped structures are connected to the lobe-shaped flow divided pipes, and a positioning column is arranged between the lobe-shaped flow divided pipe and the lobe-shaped structure. Therefore, the bone cement forming die can be used for processing solid bone cement bars with certain outlines, but the bone cement forming die is used only one time because the injection channel and the flow divided pipes of the die core are blocked by solidified bone cement unable to be eliminated, and a cavity is destroyed by the deformation of combined covers of the cavity and filling of damaged blocks when separated solid bone cement bars with a lobe-shaped structure are took out. The disposable type bone cement forming die can avoid disease transmission might be caused by reuse, and the disposable type bone cement forming die has a simple structure and is easy to manufacture.

Description

technical field [0001] The invention relates to a self-destruction molding mold, in particular to a disposable bone cement molding mold. Background technique [0002] Vertebroplasty is mainly used to treat vertebral compression fractures in osteoporosis, primary or metastatic vertebral tumors, etc. Vertebroplasty (percutaneous vertebroplasty, PVP) and kyphoplasty (percutaneous kyphoplasty, PKP) two. PVP is to inject low-viscosity bone cement into the vertebral body without space under high pressure; PKP is to expand the cavity in the vertebral body through a bone expander, and inject high-viscosity bone cement into the vertebral body cavity under low pressure , the leakage is relatively limited, and its security is greatly improved compared with PVP. However, regardless of low-viscosity bone cement or high-viscosity bone cement, when the diseased vertebral body is damaged, the risk of leakage cannot be avoided if the bone cement is injected in a liquid state. These risks ...

AI Technical Summary

Problems solved by technology

However, regardless of low-viscosity bone cement or high-viscosity bone cement, when the diseased vertebral body is damaged, the risk of leakage cannot be avoided if the bone cement is injected in a liquid state

These risks include (1) leakage of bone cement to the back of the vertebral body and into the spinal canal and nerve root canal, which may cause spinal cord nerve compression injury and paralysis; (2) fatal pulmonary embolism, which may cause pressure changes in the vertebral body caused by bone cement injection, resulting in fat embolism PVP of multiple vertebral bodies increases the risk; in addition, the toxicity of bone cement monomer may also be harmful to the human body

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