Method of making a medical grasper

Details Method of making a medical grasper Method of making a medical grasper

2007-05-01

2007-05-01

Cozart, Jermie E. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S516000, C606S113000, C606S127000

Reexamination Certificate

active

10445086

ABSTRACT:
A method of forming an annularly expanding and retracting gripping and releasing mechanism providing a series of flexible tubes, comprising providing (1) a series of flexible tubes, (2) a corresponding series of wires, each of which includes a movable wire section and relatively short fixed wire section integrally connected with one end of the movable wire section by a kink configured so that the wire sections extend in longitudinally coextensive relation therefrom; (3) a series of tubular elements of thermoplastic material; and (4) a series of heat shrinkable sleeves assembling a distal end portion of each flexible tube with a fixed wire section, a tubular element and a heat shrinkable sleeve so that the fixed wire section extends along the exterior periphery of the flexible tube with the kink disposed outwardly of the distal end thereof. The tubular element is disposed in surrounding relation to the fixed wire section and the flexible tube and the heat shrinkable sleeve is disposed in surrounding relation to the tubular element. The method further comprises applying heat to the exterior of each heat shrinkable sleeve at a temperature sufficient to contract the sleeve and soften the thermoplastic material of the tubular element surrounded thereby so that the contraction of the sleeve molds the softened thermoplastic material into adhered contact with the exterior surfaces of the surrounded fixed wire section and flexible tube.

REFERENCES:
patent: 5906622 (1999-05-01), Lippitt et al.
patent: 5924175 (1999-07-01), Lippitt et al.
patent: 6077274 (2000-06-01), Ouchi et al.
patent: 6368327 (2002-04-01), Lippitt et al.

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