Shaft movement control apparatus and method

Details Shaft movement control apparatus and method Shaft movement control apparatus and method

1993-10-22

1996-11-05

Hindenburg, Max

Surgery

Truss

Pad

A61B 500

Patent

active

055707017

ABSTRACT:
The present invention is a device and method for controlling longitudinal movement of a tube relative to a shaft slidably disposed within the tube, especially in the catheterization of a patient. An operative segment on the shaft cooperates with an ancillary tool to create a coupling force field between the shaft and the tool. The tube can then be moved over the shaft while the coupling force field operates through the tube to restrict the movement of the shaft. In preferred embodiment, the shaft is a guide wire and the tube is a catheter with a lumen for slidably receiving the guide wire, while the coupling force field is created magnetically. In one embodiment, the operative segment is borne on a short guide wire extension which is selectively securable to a standard guide wire. In another embodiment a pair of electrical coils are placed around the magnetically operative segment to couple therewith and provide signals indicative of the movement and position of the guide wire.

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