Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing porous tantalum medical implant material

An implant material, porous tantalum technology, applied in the field of porous medical metal implant materials, can solve the problems of carbon skeleton residues, reduced biological safety, insufficient purity of finished products, etc., achieve simple process, ensure biocompatibility and biosafety sexual effect

Active Publication Date: 2012-11-28
CHONGQING RUNZE PHARM CO LTD
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of its preparation method, the purity of the obtained finished product is not enough, and there are carbon skeleton residues, resulting in a decrease in biological safety

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing porous tantalum medical implant material
  • Method for preparing porous tantalum medical implant material
  • Method for preparing porous tantalum medical implant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Weigh 12.5 g of polyvinyl alcohol and put it into a container with 240 ml of distilled water; place it on an electric stove to heat and stir to make it into an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 60g of tantalum powder with an average particle size of less than 43 microns and an oxygen content of less than 0.1%, add 50ml of cooled polyvinyl alcohol aqueous solution, stir and mix evenly, and make it into a tantalum powder slurry. Use 10×10×30mm porous polyurethane foam (average pore diameter is 0.48mm, density 0.025g / cm 3 , hardness 50°) into it and pour until the pores of the polyurethane foam are filled with the tantalum powder slurry, then use a clamp to take out the polyurethane foam filled with the tantalum powder slurry and put it into a porcelain plate. Dry in a vacuum drying oven at a drying temperature of 60° C., a drying time of 8 hours, and a vacuum degree of 1 Pa. Degreasing treatment: the vacuum degree is lower than...

Embodiment 2

[0027] Example 2: Weigh 10 g of polyvinyl alcohol and put it into a container with 200 ml of distilled water; place it on an electric stove to heat and stir to make it into an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 40g of tantalum powder with an average particle size of less than 43 microns and an oxygen content of less than 0.1%, add 32ml of polyvinyl alcohol aqueous solution, stir and mix evenly, and make it into a tantalum powder slurry. Use 10×10×25mm porous polyurethane foam (average pore diameter is 0.56mm, density 0.030g / cm 3 , hardness 60°) into it and pour until the pores of the polyurethane foam are filled with the tantalum powder slurry, then use a clamp to take out the polyurethane foam filled with the tantalum powder slurry and put it into a porcelain plate. Dry in a vacuum drying oven at a drying temperature of 100°C for a drying time of 4 hours and maintain a vacuum of 10 -2 Pa. Degreasing treatment: vacuum degree 10 -4 Pa, tempera...

Embodiment 3

[0029] Example 3: Weigh 11 g of polyvinyl alcohol and put it into a container with 220 ml of distilled water; place it on an electric stove to heat and stir to make it into an aqueous solution of polyvinyl alcohol. Use a 200g balance to weigh 45g of tantalum powder with an average particle size of less than 43 microns and an oxygen content of less than 0.1%, add 36ml of polyvinyl alcohol aqueous solution, stir and mix evenly, and make it into a tantalum powder slurry. Use 8×8×25mm porous polyurethane foam (average pore diameter is 0.70mm, density 0.035g / cm 3 , hardness 70°) into it and pour until the pores of the polyurethane foam are filled with the tantalum powder slurry, then use a clamp to take out the polyurethane foam filled with the tantalum powder slurry and put it into a porcelain plate. Dry in a vacuum drying oven at a drying temperature of 80°C for a drying time of 6 hours and maintain a vacuum of 10 -1 Pa. Degreasing treatment: vacuum degree 10 -3 Pa, temperatur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Average pore diameteraaaaaaaaaa
Elastic modulusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a porous tantalum medical implant material. The porous tantalum medical implant material is sintered by a foam impregnation method; the method comprises the following steps of: mixing a solution of an organic binding agent and a dispersing agent and tantalum powder to obtain tantalum powder slurry; pouring into an organic foam; impregnating until the tantalum powder slurry is fully injected into pores of the organic foam; drying to remove the dispersing agent in the organic foam into which the tantalum powder slurry is poured; degreasing in the protective atmosphere of inert gas to remove the organic binding agent and the organic foam; sintering under the vacuum degree to obtain a porous sintering body and cooling; and annealing under vacuum, and performing conventional aftertreatment to obtain porous tantalum, namely raising temperature to 800 to 900 DEG C at the speed of 10 to 20 DEG C / min under the vacuum degree of 10<-4> to 10<-3> Pa, preserving heat for 240 to 480 minutes, cooling to 400 DEG C at the speed of 2 to 5 DEG C / min, preserving heat for 120 to 300 minutes, and cooling to room temperature along with a furnace. The porous tantalum material prepared by the method is high in biocompatibility, safety, mechanical performance and intensity and suitable for replacing bone tissues of a loading part of a human body.

Description

technical field [0001] The invention relates to a porous medical metal implant material, in particular to a preparation method of a porous tantalum medical implant material suitable for replacing load-bearing bone tissue. Background technique [0002] Porous medical metal implant materials have important and special purposes such as treating bone tissue trauma and femoral tissue necrosis. The common materials of this type include porous metal stainless steel and porous metal titanium. As a porous implant material used in the treatment of bone tissue trauma and femoral tissue necrosis, its porosity should reach 30-80%, and the pores should be all connected and evenly distributed, or partially connected and evenly distributed according to the needs, so that it can be connected with The growth of bone tissue in the human body is consistent, and the weight of the material itself is reduced, so that it is suitable for human implantation. [0003] The refractory metal tantalum, b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C1/08C22C27/02A61L27/04A61L27/56
CPCA61L2430/02A61L27/047A61L2400/08A61L27/04A61L27/56B22F3/1121C22C1/08C22C27/02
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com