HA fiber-enhanced PEEK backbone fusion device

A technology of fiber reinforcement and fuser, applied in medical science, prosthesis, etc., to improve biocompatibility, enhance strength, and avoid metal debris problems

Inactive Publication Date: 2011-09-14
BEIJING ALLGENS MEDICAL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional hydroxyapatite ceramics are brittle materials and can only be used for artificial joint coatings, ear bones and other biomaterial applications under non-load-bearing conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The spinal fusion cage is in the shape of a rectangular banana, with a width of 14mm, a length of 25mm, a height of 10mm, and a wall thickness of 2.5mm. Suitable for patients with L5 / S1 intervertebral disc herniation.

[0023] HA fiber reinforced PEEK spinal fusion cage, the material used in the spinal fusion cage is medical implantable PEEK material imported from German EVONIK company. The HA fiber is a self-made hydroxyapatite fiber with a diameter of nanometers and a length of micrometers. HA fiber addition is 20%.

Embodiment 2

[0025] The structural size of the spinal fusion device is the same as in Example 1. However, the fusion cage has a slope of 5 degrees, which is lower at the front and higher at the rear. The width is 14mm, the length is 25mm, the height is 10mm, and the wall thickness is 2.5mm.

[0026] HA fiber reinforced PEEK spinal fusion cage, the material used in the spinal fusion cage is medical implantable PEEK material imported from German EVONIK company. HA fibers are self-made hydroxyapatite fibers with a diameter of nanometers and a length of micrometers, which are processed by dispersion and coupling. HA fiber addition is 20%. Suitable for patients with L4 / L5 intervertebral disc herniation.

Embodiment 3

[0028] HA fiber reinforced PEEK spinal fusion cage, the material used in the spinal fusion cage is medical implantable PEEK material imported from German EVONIK company. HA fibers are self-made hydroxyapatite fibers with a diameter of nanometers and a length of micrometers, which are processed by dispersion and coupling. HA fiber addition is 30%. Suitable for patients with L5 / S1 intervertebral disc herniation.

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PUM

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Abstract

The invention relates to a hydroxyapatite (HA) fiber-enhanced polyether-ether-ketone (PEEK) backbone fusion device, which is characterized by being manufactured by adding HA fibers into a PEEK material; the HA fibers are hydroxyapatite fibers of which the diameters are in the nanometer level and the lengths are in the micrometer level; PEEK is a medical implanted PEEK raw material; and the HA fiber-enhanced PEEK contains 5 to 30 mass parts of HA fibers, and the HA fibers can enhance the strength of the PEEK, overcome the defect of the PEEK serving as the backbone fusion device and meet the mechanical requirement of the backbone fusion device. Simultaneously, the HA fiber-enhanced PEEK backbone fusion device improves the biocompatibility of the PEEK and bones, improves the bioactivity of the PEEK and is favorable for the fusion of the bones.

Description

technical field [0001] The invention belongs to the field of biomedical materials, in particular to a spinal fusion device using new materials. Background technique [0002] As an important technique in spinal surgery, interbody fusion has been widely used in the treatment of spinal fractures and dislocations, especially in the treatment of degenerative spinal diseases. Spinal fusion is an effective means of treating spinal diseases such as spinal tuberculosis, infection, deformity, degenerative disease and intervertebral disc injury. [0003] In the 1950s, Cloward first proposed the concept of posterior lumbar interbody fusion (PLIF). From the perspective of biomechanics, this is an ideal spinal fusion, which has gradually developed into one of the basic techniques of spinal surgery. In 1984, DeBowes reported that a stainless steel cage (cage) was placed into a horse's cervical spine to heal. In 1988, Bagby applied the cage to human cervical intervertebral fusion accordi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/46A61L27/18
Inventor 崔福斋王昶明郭文广朱锦文
Owner BEIJING ALLGENS MEDICAL SCI & TECH
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