Epidural lead advancer

Details Epidural lead advancer Epidural lead advancer

1980-10-14

1983-05-17

Kamm, William E.

Surgery

Truss

Pad

A61N 104

Patent

active

043835325

ABSTRACT:
Surgical apparatus for propelling an epidural electrode (22) in an epidural needle (29), including a frame (41) having opposite inlet and outlet apertures for enabling axial passage of the electrode therethrough along a first axis of the frame, a pair of rollers (54, 57) mounted for rotation in the frame about further parallel axes orthogonal to the first axis, the rollers being configured and positioned to laterally engage the electrode therebetween, a driving interconnection (55, 60) between the rollers for simultaneous rotation about their axes in opposite directions to cause linear movement of the electrode along the first axis, disconnectable braking member (62) for opposing the rotation of said rollers while an electrode is being advanced and for allowing said rollers to rotate freely while the frame is being removed from an electrode, and an actuator (61) extending beyond the frame for causing rotation of the rollers. The frame may be configured (170) or cut to facilitate its removal from the needle by spreading or fracture, and an elastic band (174) may surround the frame to oppose unintended fracture.

REFERENCES:
patent: 2129391 (1938-09-01), Wappler
patent: 3838688 (1974-10-01), May et al.
patent: 3847140 (1974-11-01), Ayglla
patent: 4235246 (1980-11-01), Weiss

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