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US4650109A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of manufacture of bone implant porous surfaces

Assignee: Individual
•
Filing: 1985-01-14
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Granted: 1987-03-17
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Expires: 2005-01-14
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Abstract

Abstract Described is a method of manufacture of bond implant so to create a porous surface. The bone implant is made of titanium or titanium alloy. The porous surfaces are attached to a titanium substrate by use of a joinder agent including copper, nickel and indium, which is heated to temperatures less than the beta transus.

Inventors

  • 👤 Charles Crivella
  • 👤 Lee A. Stouse

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61L; A61L27/00; A61L27/02; A61L27/04; A61L27/06; A61L27/50; A61L27/56; B; B22; B22F; B22F7/00; B22F7/002; B22F7/004; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; B22F2998/00; Y; Y10; Y10S; Y10S623/00; Y10S623/915; Y10S623/919

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 129 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound comprising copper, nickel and indium, but including substantially no silver; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means.
Claim 2
Independent Claim 129 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound comprising copper, nickel and indium, but including substantially no silver; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means.
Claim 3
Dependent Claim 21 words
The method of claim 1 wherein the joinder compound added is less than 2% by weight of the total implant weight.
Claim 4
Dependent Claim 21 words
The method of claim 1 wherein, after the substrate and pore creating means are cooled, the bone implant substrate is hardened.
Claim 5
Dependent Claim 33 words
The method of claim 1 wherein the substrate, joinder compound and pore creating means are held at a temperature just under the beta transus for at least ten minutes, and are then quenched.
Claim 6
Dependent Claim 28 words
The method of claim 4 wherein the quenching occurs by use of dry argon before exposure of the substrate and pore creating means to an open air atmosphere.
Claim 7
Independent Claim 141 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound which has a chemical composition of 63%-66% copper, 30%-36% nickel, 3%-6% indium, 0-5% titanium and 0-1% iron and other impurities by weight; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means.
Claim 8
Independent Claim 141 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound which has a chemical composition of 63%-66% copper, 30%-36% nickel, 3%-6% indium, 0-5% titanium and 0-1% iron and other impurities by weight; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means.
Claim 9
Independent Claim 138 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means which after the heating and cooling cycle is 75%-95% titanium, 1%-15% copper, 1%-15% nickel and 1%-10% indium by weight.
Claim 10
Independent Claim 138 words
A method for manufacture of titanium bone implant comprising the steps: (1) creating a titanium or titanium alloy bone implant substrate corresponding with bone matter to be replaced; (2) treating a portion of the substrate where the implant is to be joined with surrounding bone with a joinder compound; (3) placing over said joinder compound pore creating means of titanium or titanium alloy; (4) heating the substrate, joinder compound and pore creating means to a temperature less than the beta transus of the titanium or titanium alloy being used until the joinder compound melts; and (5) cooling the substrate compound and pore creating means, creating a resultant, predominantly titanium, substantially uniform bond between the substrate and pore creating means which after the heating and cooling cycle is 75%-95% titanium, 1%-15% copper, 1%-15% nickel and 1%-10% indium by weight.

References Cited (Backward Citations)

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US3561099A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-03-16 1990-09-15 1991-03-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-03-16 1994-09-15 1995-03-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-03-16 1998-09-15 1999-03-17 $7700.00 Window Closed / Lapsed

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