Drive shaft for an intravascular catheter system

Details Drive shaft for an intravascular catheter system Drive shaft for an intravascular catheter system

1993-01-19

1994-09-20

Jaworski, Francis

Surgery

Truss

Pad

606159, A61B 812

Patent

active

053480171

ABSTRACT:
The present invention provides an improved drive shaft for use in a catheter system having a rotating imaging or interventional work element. A drive shaft according to the present invention is formed at least in part of a material having super elastic properties. This material provides an advantageous combination of column strength and torsional rigidity with the ability to sustain substantial bending without permanent deformation. Preferred embodiments are formed as hollow tubes to allow electrical conducting wires to be disposed within the body of the drive shaft. Some embodiments combine relatively rigid proximal segments with relatively flexible distal segments to allow for entry of the work element into narrow and twisting regions of a patient's vascular system.

REFERENCES:
patent: 4998923 (1991-03-01), Samson et al.
patent: 5002058 (1991-03-01), Martinelli
patent: 5025799 (1991-06-01), Wilson
patent: 5095911 (1992-03-01), Pomeranz
patent: 5108411 (1992-04-01), McKenzie
patent: 5111829 (1992-05-01), Alvarez de Toledo
patent: 5143085 (1992-09-01), Wilson
patent: 5147370 (1992-09-01), McNamara et al.
patent: 5203338 (1993-04-01), Jang
patent: 5243996 (1993-09-01), Hall

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