Steerable memory alloy guide wires

Details Steerable memory alloy guide wires Steerable memory alloy guide wires

1990-10-01

1992-09-01

Hindenburg, Max

Surgery

Truss

Pad

128657, 604 95, 604280, A61B 500

Patent

active

051430851

ABSTRACT:
A medical guide wire or the like that is comprised in part or entirely of one or more heat activated memory alloys alone or in conjunction with one or more non-heat activated memory material.
The tip or any portion of a guide wire comprised of memory alloy or components thereof can be aimed, deflected or steered on command by applying heat to the alloy. Combining heat activated memory alloys alone or with non-heat activated memory materials in opposite or antagonistic configurations of assemblies permits reversible shape change of the guide wire in any direction. The heat activated or shape memory alloys may be titanium-nickel alloys, titanium-nickel-cobalt alloys, other transition and precious metal alloys or thermoplastic heat settable material which exhibit shape memory characteristics. Heating of the guide wire is accomplished by induction heating, immersion heating, application of RF energy, or by body temperature.

REFERENCES:
patent: 3868956 (1975-03-01), Alfidi et al.
patent: 3890977 (1975-01-01), Wilson
patent: 4215703 (1980-08-01), Wilson
patent: 4601705 (1986-07-01), McCoy
patent: 4798598 (1989-01-01), Bonello et al.

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