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Tibial prosthesis as well as preparation method and application thereof

A prosthesis, tibia technology, applied in the field of medical orthopedic bionic materials, can solve the problems of loosening, dislocation, poor fixation effect, etc., and achieve the effect of reducing stress shielding, low difficulty, and beneficial to initial stability

Pending Publication Date: 2020-10-23
河北春立航诺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These biological coatings can induce bone ingrowth, and make the tibial prosthesis have a certain immediate fixation stability, but the fixation effect is not good, and postoperative loosening and dislocation still occur

Method used

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  • Tibial prosthesis as well as preparation method and application thereof
  • Tibial prosthesis as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0034] The invention provides a kind of preparation method of tantalum pentachloride gas: specifically comprise the following steps:

[0035] (1) Put medical pure tantalum in the reaction chamber (the reaction chamber is a quartz reaction chamber or a high-purity graphite reaction chamber);

[0036] (2) Vacuumize the reaction chamber, and then feed argon into the reaction chamber at a flow rate of 10000-13000ml / min, and ensure that the vacuum in the reaction chamber is greater than or equal to 4Pa and less than or equal to 13.3Pa;

[0037] (3) Feed high-purity chlorine gas into the reaction chamber, the feed rate of high-purity chlorine gas is 200-240ml / min, react under the condition of 900-1050°C, high-purity chlorine gas and medical pure tantalum generate tantalum pentachloride gas.

[0038] The invention provides a method for preparing a medical porous tantalum trabecular shell by chemical vapor deposition, which specifically includes the following steps:

[0039] The temp...

preparation example

[0042] A kind of tantalum pentachloride gas is prepared as follows:

[0043] (1) Put medical pure tantalum in the quartz reaction chamber;

[0044] (2) Vacuumize the quartz reaction chamber, then feed argon gas into the quartz reaction chamber, the flow rate of feeding argon gas is 10000ml / min, and make the vacuum degree in the quartz reaction chamber be 10Pa;

[0045] (3) Feed high-purity chlorine gas into the quartz reaction chamber, the feed rate of high-purity chlorine gas is 240ml / min, fully react under the condition of 1050 ℃, can make tantalum pentachloride gas.

Embodiment 1

[0048] Porous tantalum trabecular shells were prepared as follows:

[0049] The temperature in the high-purity graphite reaction chamber is 900°C and the vacuum degree is 4Pa; the porous carbon substrate is placed in the high-purity graphite reaction chamber; the tantalum pentachloride gas is passed into the high-purity In the graphite reaction chamber, at the same time, high-purity hydrogen gas is passed into the high-purity graphite reaction chamber at a rate of 530ml / min, and reacted for 9 hours. The tantalum metal will be deposited on the surface of the porous carbon substrate to produce Porous tantalum trabecular shell.

[0050] A tibial prosthesis was prepared as follows:

[0051] Firstly, the surface of the titanium alloy tibial plateau was pretreated to make its smoothness reach 0.2; then, the porous tantalum trabecular shell prepared above and the surface pretreated titanium alloy tibial plateau were placed in an argon protective atmosphere by diffusion welding Weld...

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Abstract

The invention discloses a tibial prosthesis as well as a preparation method and an application thereof, and relates to the technical field of medical orthopedic bionic materials. The tibial prosthesiscomprises a porous tantalum bone trabecula shell, a titanium alloy tibial plateau support and a high molecular weight polyethylene tibial plateau pad, has good biocompatibility, strength, ductility and biological fixation effect, is beneficial to ingrowth of bones, and has the advantage of reducing the phenomena of looseness, dislocation and the like of the tibial prosthesis; and the phenomena oftibial prosthesis loosening, dislocation and the like caused by the problems of small bone ingrowth amount, high elastic modulus, stress shielding and the like can be effectively solved. The preparation method comprises the following steps: welding the porous tantalum bone trabecula shell with the titanium alloy tibial plateau support, and then connecting the porous tantalum bone trabecula shellwith the high molecular weight polyethylene tibial plateau pad; the tibial prosthesis prepared according to the preparation method has high stability and relatively high yield; and the tibial prosthesis prepared by the method is particularly suitable for total knee arthroplasty.

Description

technical field [0001] The invention relates to the technical field of medical orthopedic bionic materials, in particular to a tibial prosthesis, a preparation method and an application. Background technique [0002] A prosthesis, also called a prosthesis in medicine, is a medical device that replaces a certain limb, organ or tissue of the human body. According to the purpose of the prosthesis, it can be divided into extracorporeal prosthesis and implantable prosthesis, such as prosthetics, dentures and glass eyeballs, etc.; implantable prosthesis is all implanted in the human body and replaces the repair of organs or tissues Body, such as artificial tendon, artificial heart valve, artificial joint and tibial prosthesis, etc. [0003] Initially, bone cemented tibial prosthesis was developed, which is made of cobalt, chromium, molybdenum alloy material and ultra-high molecular weight polyethylene material, and bone cemented tibial prosthesis can be connected with the treated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/38A61L27/04A61L27/06A61L27/16A61L27/30A61L27/56
CPCA61F2/28A61F2/389A61L27/047A61L27/06A61L27/16A61L27/306A61L27/56A61F2002/2892A61L2430/02A61L2420/02
Inventor 岳术同杨春保牛犇
Owner 河北春立航诺新材料科技有限公司
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