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Polyetheretherketone total hip femoral head prosthesis material and preparation method thereof

A polyetheretherketone, prosthesis material technology, applied in the direction of prosthesis, medical science, etc., can solve the problems of loose prosthesis, can not completely solve the stress, block wear debris, etc., achieve good biocompatibility, good mechanical phase. capacitive effect

Inactive Publication Date: 2005-03-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. After the prosthesis is placed in the human body, it will inevitably wear out under the condition of stress, and a large amount of wear debris generated by the wear will enter the effective joint space, activate macrophages and cause osteoclastic osteolysis, resulting in loosening of the prosthesis
Although this kind of composite material has improved biocompatibility and mechanical properties by stacking a metal oxide ceramic layer and a hydroxyapatite layer on a metal base, it cannot completely solve the problem of "stress shielding" due to the presence of metal materials. ”Problems and the ills of generating wear debris

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The composition and weight percentage of the polyether ether ketone total hip femoral head prosthesis material are: 20% of carbon fiber and 80% of polyether ether ketone.

[0013] Weigh 200g of chopped carbon fiber and 800g of polyetheretherketone resin, pre-mix in a high-speed mixer, and then use a twin-screw extruder for high-temperature mixing, extrusion, and granulation. Put the pellets to be molded into the mold, put them into the press after closing the mold, raise the temperature from room temperature to 400°C, pressurize at 20MPa, hold the temperature for 2 hours, and then drop the temperature from 400°C at a cooling rate of 20°C / min. to 300°C, then air-cooled immediately, and demolded when the temperature drops to 140°C.

Embodiment 2

[0015] The composition and weight percentage of the polyether ether ketone total hip femoral head prosthesis material are: 10% of carbon fiber and 90% of polyether ether ketone.

[0016] Weigh 100g of orthogonally reinforced carbon fiber plain weave cloth and 900g of polyetheretherketone resin for lamination, and the fiber reinforcement direction is 0°. Put the above-mentioned laminated material into a parallel plate mold, put it into a press after closing the mold, raise the temperature from room temperature to 400°C, pressurize at 40MPa, hold the heat for 3 hours, and then cool down from 400°C at a rate of 10°C / min ℃ to 300 ℃, and then air-cooled immediately, when the temperature dropped to 135 ℃, demoulding.

Embodiment 3

[0018] The composition and weight percentage of the polyether ether ketone total hip femoral head prosthesis material are: carbon fiber 40%, polyether ether ketone 60%.

[0019] Weigh 400g of orthogonally reinforced carbon fiber plain weave cloth and 600g of polyetheretherketone resin for lamination, and the direction of fiber reinforcement is 45°. Put the above-mentioned laminated material into a parallel plate mold, put it into a press after closing the mold, raise the temperature from room temperature to 400°C, pressurize at 50MPa, hold the heat for 1 hour, and then drop the temperature from 400°C to 400°C at a rate of 30°C / min. ℃ to 300 ℃, and then air-cooled immediately, when the temperature drops to 130 ℃, demoulding.

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PUM

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Abstract

The invention provides a polyetheretherketone total hip femoral head prosthesis material and preparation method thereof, wherein the material comprises (by weight percentage) 10-60% of carbon fiber and balancing polyetheretherketone. When short carbon fiber is employed, the short carbon fiber and polyetheretherketone resin are weighed and premixed in high speed mixing machine, the premix is compounded, squeezed and granulated with a double bolt extrusion machine. When continuous carbon fiber is employed, orthogonal reinforced carbon fiber tang and polyetheretherketone resin are weighed for laminating, then placed into parallel board die arrangement for compression moulding.

Description

technical field [0001] The invention relates to a total hip femoral head prosthesis material and a preparation method thereof, in particular to a polyether ether ketone total hip femoral head prosthesis material and a preparation method thereof. Used in the field of biomedical composite materials. Background technique [0002] The most effective treatment for advanced hip disease is total hip replacement. Its main purpose is to relieve hip pain, maintain joint stability, improve joint function, and adjust the length of both lower limbs. Currently commercialized and widely used clinically are limited to total hip femoral head prostheses made of three types of metal materials: stainless steel (iron-based alloy), cobalt-based alloy and titanium-based alloy, among which cobalt alloy has high strength and wear resistance With good performance and excellent biocompatibility, it is the most widely used type of alloy at present. Since the emergence of artificial arthroplasty (THA)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/18A61L27/44
Inventor 孙康乔秀颖方嘉李伟陆皓
Owner SHANGHAI JIAO TONG UNIV
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