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Pedicle screw medical anchoring agent

A technology of pedicle screw and anchoring agent, which is applied in the fields of application, medical science, surgical adhesive, etc., can solve problems such as the mismatch between the rate of new bone formation and the rate of material degradation, affecting the overall strengthening effect, and being unable to completely avoid leakage. , to achieve the effects of no side effects, biocompatibility, prevention of the decline in the strength of the nail track, and easy removal.

Inactive Publication Date: 2013-12-04
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the material are insufficient in the early stage of curing, and the rate of new bone formation does not match the rate of material degradation, which affects its overall strengthening effect
[0006] 3. The bone cement injected into the vertebral body through various methods is likely to cause leakage, space-occupying lesions, and serious complications; even if the dose and pressure of the injected material are strictly controlled, the occurrence of leakage cannot be completely avoided
Therefore, it poses a huge challenge to the operator's operation, which largely limits the wide application in clinical practice.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment Embodiment 2

[0021] Calcium sulfoaluminate powder: 100 parts, calcium sulfate: 200 parts, calcium oxide: 100 parts, mix well and set aside.

[0022] (2) The weight percentage preparation of the filler:

[0023] Calcium sulfate bone cement (CSC) powder / calcium phosphate cement (CPC) powder: 50-60%, hydroxyapatite powder / bone meal: 40-60%.

experiment Embodiment 1

[0025] Calcium sulfate bone cement (CSC) powder / calcium phosphate cement (CPC) powder: 50%, hydroxyapatite powder: 50%, mix well and set aside.

[0026] Experimental example 2 of filler:

[0027] Calcium sulfate bone cement (CSC) / calcium phosphate cement (CPC) powder: 60%, bone powder: 40%, mix well and set aside.

[0028] (3) Weight percent formula of medical anchoring agent for pedicle screws:

[0029] Filling agent: 50%-75%, admixture: 10%-25%, distilled water: 15%-20%.

Embodiment 1

[0031] Filling agent: 60%, admixture: 25%, distilled water: 15%.

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Abstract

The invention discloses a pedicle screw medical anchoring agent. The pedicle screw medical anchoring agent is prepared from additives, fillers and water by mixing according to a weight percentage, wherein the pedicle screw medical anchoring agent comprises: by weight, 50 to 75% of the additives, 10 to 20% of the fillers and the balance water. The pedicle screw medical anchoring agent can condense fast, has slight expansion, can reinforce a pedicle screw trajectory, has obvious fixing effects and good biological performances, can obviously improve a reinforcement degree of a pedicle screw trajectory local under the condition of osteoporosis, can improve stability and reliability of an inner spinal instrumentation, and can effectively improve clinic effects.

Description

technical field [0001] The invention relates to a medical anchoring agent, in particular to a pedicle screw medical anchoring agent used in spinal internal fixation, which is mainly used to improve the stability of pedicle screw fixation under the condition of osteoporosis. Background technique [0002] At present, pedicle screw technology has become the most commonly used internal fixation technology in spinal surgery. The key to the stability of pedicle screw fixation depends on whether sufficient "bone-screw" interface holding force can be obtained. With the aging population in my country, more and more osteoporosis patients need internal fixation surgery due to spinal diseases. However, under the condition of osteoporosis, the bonding strength between the pedicle screw and the surrounding bone is significantly reduced, which reduces the holding force of the screw, and complications such as screw loosening, displacement, and prolapse occur from time to time. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L24/02
Inventor 雷伟冯亚非
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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