GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty

A technology of vertebroplasty and bone cement, applied in the field of vertebroplasty, to avoid micro fractures, improve strength and stiffness, and improve relative stability

Pending Publication Date: 2021-09-28
SHANGHAI FIRST PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regarding a combination of the advantages and disadvantages of GeneX bone cement and PMMA bone cement, it can avoid microfractures caused by the compression of cancellous bone arou

Method used

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  • GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty
  • GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty
  • GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty

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Experimental program
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Effect test

Embodiment 1

[0029] Please see attached figure 1 , figure 1 It is a structural schematic diagram of a separating device for GeneX bone cement combined with PMMA in vertebroplasty of the present invention. A kind of vertebroplasty of GeneX bone cement combined with PMMA, the vertebroplasty of described GeneX bone cement combined with PMMA includes separation device 1 for injecting GeneX bone cement and PMMA bone cement separately, and clinical vertebroplasty The puncture assembly and the balloon expansion assembly used in the operation; the separation device 1 includes an air bag 11 and an inflation pipeline 12 integrally connected with the air bag 11; the puncture assembly and the balloon expansion assembly all adopt clinical existing structures.

[0030] It should be noted that the balloon 11 has a disk-shaped structure after being inflated. When performing the vertebroplasty in this application, the bone cement channel is established through the clinical puncture component and expanded ...

Embodiment 2

[0032] Please see attached Figure 6 , Figure 6 It is a schematic diagram of injecting PMMA bone cement and GeneX bone cement after the improved coronary balloon dilation of the present invention. In this embodiment, by improving the balloon expansion assembly in the prior art, the balloon with a spherical structure is designed as a coronal structure 2 with branches on the surface, so that the expanded area of ​​the balloon in the vertebral body has a coronal structure;

[0033] Because the current application of medium / high viscosity bone cement is a trend, compared with ordinary viscosity bone cement, high viscosity PMMA bone cement has many advantages, but its few disadvantages are also the biggest disadvantage, which is poor dispersion. The high-viscosity PMMA bone cement will only be in the cavity formed after the expansion of the balloon, and will not diffuse into the surrounding bone trabecula. The spherical bone cement will produce a bowling effect under the action o...

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Abstract

The invention relates to a GeneX bone cement and PMMA (polymethyl methacrylate) combined vertebroplasty. The GeneX bone cement and PMMA combined vertebroplasty comprises a separation device, a puncture assembly and a balloon dilatation assembly. The separation device comprises an air bag which is of a disc-shaped structure after being inflated and a pipeline used for inflating the air bag. A dilatation balloon arranged in the balloon dilatation assembly is of a coronal structure. The vertebroplasty has the advantages that advantages and disadvantages of the GeneX bone cement and the PMMA bone cement are combined and complemented for use, so that micro-fracture caused by extrusion of cancellous bones around the bone cement can be reduced, and the long-term stable maintenance effect of the post-operation centrum height is realized; and by designing the dilatation balloon in the prior art into the coronal structure, the whole high-viscosity PMMA bone cement is more matched with a vertebral body, so that the bowling effect of the high-viscosity PMMA bone cement is solved, the relative stable effect between the injected bone cement and the vertebral body is improved, and micro-fracture caused by extrusion of bone trabecula is avoided.

Description

technical field [0001] The invention relates to the technical field of vertebroplasty, in particular to a vertebroplasty with GeneX bone cement combined with PMMA. Background technique [0002] Bone cement, also known as bone cement, is mainly used to fill defects and fix implants. At present, there are many types of bone cement, but they can be roughly divided into two types. One is the bone cement that can be absorbed by the human body, such as the new vertebral body filling material, GeneX bone cement, and the other is the bone cement that cannot be absorbed by the human body. For example, PMMA bone cement commonly used in clinical PVP or PKP vertebroplasty. However, both GeneX bone cement and PMMA bone cement have their advantages and disadvantages. As a new type of vertebral body filling material, GeneX bone cement has the same effect on postoperative pain relief as PMMA. Good, can quickly improve the strength and stiffness of the vertebral body, and its complications...

Claims

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Application Information

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IPC IPC(8): A61B17/88
CPCA61B17/8855A61B17/8805
Inventor 宋滇文李勇爱尹华斌孟通魏子恒
Owner SHANGHAI FIRST PEOPLES HOSPITAL
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