Roughening treatment technology for surface of bone implantation prosthesis

A technology of bone implantation and roughening, applied in the direction of prosthesis, medical science, etc., can solve the problem of unsolvable coating detachment, oxide layer on the surface of the product, affecting the healing cycle of the product, etc., to achieve long-term stability. , reducing the risk of escape, reducing the effect of biological risk

Pending Publication Date: 2022-04-15
BEIJING CHUNLIZHENGDA MEDICAL INSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are still many deficiencies in the rough treatment of the surface of the bone implant prosthesis in the prior art, such as the inability to solve the problem of coating detachment reported by the clinical end, and the surface of the product after surface treatment still has an oxide layer, which seriously affects the healing cycle of the product, etc.

Method used

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  • Roughening treatment technology for surface of bone implantation prosthesis
  • Roughening treatment technology for surface of bone implantation prosthesis
  • Roughening treatment technology for surface of bone implantation prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] S1. The bone implant prosthesis made of pure titanium is sprayed for 0.5min at room temperature under a pressure of 0.5Mpa, and the spray medium is titanium oxide particles with a particle size of 5 mesh; a layer of oxide film is formed on the surface of the prosthesis after high-pressure spraying ;

[0034] In the specific implementation process, dry spraying can be selected during spraying in this step (directly using compressed air as power to form a high-speed spray beam to spray Ti 2 O spray) or wet sandblasting (compressed air is used as power to form a high-speed jet beam to spray Ti 2 A mixture of O and water is ejected);

[0035] S2. Soak in solution A made of concentrated nitric acid, concentrated hydrofluoric acid and water according to the ratio of x:y:100-x-y (where x is 1, y is 1) and soak at 20°C for 10 minutes, then go through step S1 The obtained bone implant prosthesis uses the strong corrosiveness of solution A to remove the oxide layer on the surfa...

Embodiment 2

[0039] S1. The bone implant prosthesis made of cobalt-chromium-molybdenum was sprayed for 1.5 minutes at room temperature under a pressure of 2Mpa, and the spray medium was molybdenum oxide particles with a particle size of 60 mesh; a layer of oxide film was formed on the surface of the prosthesis after high-pressure spraying;

[0040] In the specific implementation process, dry spraying can be selected during spraying in this step (directly using compressed air as power to form a high-speed spray beam to spray Ti 2 O spray) or wet sandblasting (compressed air is used as power to form a high-speed jet beam to spray Ti 2 A mixture of O and water is ejected);

[0041] S2. Use concentrated nitric acid, concentrated hydrofluoric acid and water according to the ratio of x:y:100-x-y (where x is 3, y is 3) and soak in solution A at 30°C for 18 minutes, then step S1 The obtained bone implant prosthesis uses the strong corrosiveness of solution A to remove the oxide layer on the surfa...

Embodiment 3

[0045] S1. Spray the bone implant prosthesis made of pure titanium at room temperature for 3 minutes under a pressure of 3Mpa, and the spray medium is titanium oxide particles with a particle size of 100 mesh; a layer of oxide film is formed on the surface of the prosthesis after high-pressure spraying;

[0046] In the specific implementation process, dry spraying can be selected during spraying in this step (directly using compressed air as power to form a high-speed spray beam to spray Ti 2 O spray) or wet sandblasting (compressed air is used as power to form a high-speed jet beam to spray Ti 2 A mixture of O and water is ejected);

[0047] S2. Soak in solution A made up of concentrated nitric acid, concentrated hydrofluoric acid and water according to the ratio of x:y:100-x-y (where x is 5, y is 5) and soak at 40°C for 25 minutes and go through step S1 The obtained bone implant prosthesis uses the strong corrosiveness of solution A to remove the oxide layer on the surface of...

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PUM

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Abstract

The invention provides a roughening treatment technology for the surface of a bone implantation prosthesis. The roughening treatment technology comprises the steps that S1, spraying treatment is conducted on the bone implantation prosthesis; s2, removing an oxide layer on the surface of the substance obtained in the step S1; and S3, soaking the bone implantation prosthesis treated in the step S2 to form pores in the formed holes, taking out the bone implantation prosthesis, and putting the bone implantation prosthesis into an alkaline solution to be cleaned and stored while spraying an inert gas environment. The prosthesis has the advantages that the multi-stage holes formed in the surface of the prosthesis can enable bone tissue and the prosthesis to form an osseointegration area, the strength of the prosthesis cannot be affected, and meanwhile the osseointegration efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of prosthesis manufacture, in particular to a roughening treatment technology for the surface of a bone implant prosthesis. Background technique [0002] At present, the surface of bone implant products is treated with various surface treatment technologies, the purpose of which is to make the prosthesis rough and provide enough space for bone tissue to complete bone ingrowth. Implant osseointegration is an important reason why the implant and bone tissue contact and maintain a stable structure. Excluding host factors (patient's physiological conditions and bone mass, etc.) and iatrogenic factors (surgical injury and loading timing, etc.), the most important factor affecting osseointegration is the surface treatment of the implant; [0003] However, there are still many deficiencies in the rough treatment of the surface of the bone implant prosthesis in the prior art, such as the inability to solve the prob...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/04A61L27/56B24C1/06C23F1/26C23F1/28C23G1/10
Inventor 陈江平许奎雪史春生刘曙光刘迪
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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