Surgery – Instruments – Orthopedic instrumentation
Patent
1994-09-16
1995-12-12
Jackson, Gary
Surgery
Instruments
Orthopedic instrumentation
606 75, 606219, A61B 1704
Patent
active
054745578
ABSTRACT:
An osteosynthesis clip is made of a thermoelastic martensitic alloy, the martensitic and austenitic transformation temperatures M.sub.s and A.sub.s of which can vary, depending on the applications, between -20.degree. C. to 70.degree. C. The clip includes side branches intended to be inserted on either side of the focus of a fracture of a bone to be repaired. The side branches are connected together by at least one connection portion. The side branches and the connection portion are educated respectively, to curve substantially toward the center of the clip and to shorten under the effect of temperature, when temperature exceeds the austenitic transformation temperature A.sub.s of the material. The clip is comprised of a unitary and monobloc wire consisting of the alloy. At least one of the side branches which form the clip is made by at least a partial folding back of the wire onto itself.
REFERENCES:
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patent: 4170990 (1979-10-01), Baumgart et al.
patent: 4485816 (1984-12-01), Krumme
patent: 5002563 (1991-03-01), Pyka et al.
patent: 5067957 (1991-11-01), Jervis
patent: 5246443 (1993-09-01), Mai
Flexmedics Corporation; Nitrinol . . . The Material of Choice for Safer More Effective Medical Procedures (Product Literature) 1989.
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