Endoscopic extraction devices, wire basket stone extractors, ste

Details Endoscopic extraction devices, wire basket stone extractors, ste Endoscopic extraction devices, wire basket stone extractors, ste

1993-09-27

1994-07-19

Thaler, Michael H.

Surgery

Instruments

Means for removing tonsils, adenoids or polyps

606106, 606127, 22826231, 428660, 428685, A61B 1722, A61B 1750

Patent

active

053304829

ABSTRACT:
Disclosed herein is an endoscopic extraction device which retains its operative usefulness for longer periods of time, and therefore need to be replaced less frequently. This extended instrument life is accomplished through the use of a composite wire construction, which includes, an inner monofilament wire of nitinol material surrounded by six stranded stainless steel wires. A wire construction in which a nitinol wire is surrounded by five stranded stainless steel wires is also disclosed. After constructing a wire basket in the normal manner using this material, heat is applied to the formed basket in its pre-formed shape to set the memory characteristics of the inner nitinol core.

REFERENCES:
patent: 5018969 (1991-05-01), Andreiko et al.
patent: 5064428 (1991-11-01), Cope et al.
patent: 5098441 (1992-03-01), Wechler
patent: 5171233 (1992-12-01), Amplatz et al.

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