Method of manufacturing surgical implants from cast stainless st

Details Method of manufacturing surgical implants from cast stainless st Method of manufacturing surgical implants from cast stainless st

1986-04-03

1988-10-04

Dean, R.

Metal treatment

Compositions

Heat treating

295275, 72377, 148 12E, 148327, 623 16, C21D 702

Patent

active

047754265

ABSTRACT:
A surgical implant is disclosed manufactured from cast austenitic stainless steel and cold-forged to a final shape. The endoprosthesis is initially a preform which is cast oversized in shape and dimensions. It is then compressed using the cold-forging process to its final size and shape. Using a cast material as a starting material and then compressing it substantially reduces the porosity of the material and increases its strength compared to a machined product from a wrought material.

REFERENCES:
patent: 2358799 (1944-09-01), Franks
patent: 2871557 (1959-02-01), Tarmann et al.
patent: 3197997 (1965-08-01), Kurtz
patent: 3284250 (1966-11-01), Yeo et al.
patent: 3340048 (1967-09-01), Floreen
patent: 3399560 (1968-09-01), Connolly et al.
patent: 3645124 (1972-02-01), Rohrabaugh
patent: 3737981 (1973-06-01), Plockinger et al.
patent: 3740274 (1973-06-01), Chow
patent: 3821843 (1974-07-01), Medrick et al.
patent: 3871925 (1975-03-01), Nunes
patent: 4253323 (1981-03-01), Murakami et al.
Handbook of Stainless Steels, Chapters 10 and 42, Donald Peckner, McGraw-Hill Book Company.
ASTM Designation F138-82, pp. 32-35.
ASTM Designation F 745-81, pp. 270-273.
Metallography Principles and Practice, G. F. VanderVoort, McGraw-Hill Book Company, 1984 ed, pp. 355-366.
"Pitting Resistance of New & Conventional Orthopedic Implant Materials--Effect of Metallurgical Condition"; by Barry C. Syrett and Sharon S. Wing; Corrosion, vol. 34, No. 4, pp. 138-145; Apr. 1978.
"Influence of Cold Plastic Deformation on Critical Pitting Potential of AISI 316 L and 304 L Steels in an Artificial Physiological Solution Simulating the Agressiveness of the Human Body"; by Cigada, Mazza, Pedeferri and Sinigaglia; J. Biomed. Mater. Res.; vol. II, pp. 503-512; 1977.
"The Three-Way Tradeoff in Stainless-Steel Selection"; by Robert S. Brown; Journal of Mechanical Engineering, pp. 58-62; Nov. 1982.
"Improved Properties of Type 316L Stainless Steel Implants by Low-Temperature Stress Relief"; by Hockman and Taussig; Journal of Materials, vol. 1, No. 2, pp. 425-442; Jun. 1966.
"How Corrosion Fatigue Strength of Nickel-Containing Materials Relates to Ultimate Tensile Strength and Other Factors"; Nickel Topics; vol. 3, No. 3, pp. 8-10 (1978).
"Surface Preparation and Corrosion Behavior of Titanium Alloys for Surgical Implants"; Fraker, Ruff, Sung, VanOrden and Speck; Titanium Alloys in Surgical Implants, ASTM STP, pp. 206-219; 1983.
"The Comparative Crevice Corrosion Resistance of Co-Cr Base Surgical Implant Alloys"; Devine and Wulff; J. Electrochem. Soc.: Electrochemical Science and Technology, pp. 1433-1437, vol. 123, No. 10, Oct. 1976.
"Corrosion Fatigue of 316L Stainless Steel, Co-Cr-Mo Alloy, and ELI Ti-6A1-4V"; by Imam, Fraker and Gilmore; Corrosion and Degradation of Implant Materials, ASTM STP 684, pp. 128-143; 1979.
"Corrosion Behaviour of Cast and Forged Implant Materials for Artificial Joints, Particularly with Respect to Compound Designs"; by P. Sury; Sulzer Research Number 1974; pp. 1-12; 1974.

Affiliated with

Also associated with

Rating

Method of manufacturing surgical implants from cast stainless st does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing surgical implants from cast stainless st, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing surgical implants from cast stainless st will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2154660