Fetal electrode

Details Fetal electrode Fetal electrode

1991-03-12

1993-06-01

Cohen, Lee S.

Surgery

Truss

Pad

A61B 50448

Patent

active

052150909

ABSTRACT:
A fetal monitoring scalp electrode apparatus has a relatively rigid form sustaining curved outer guide tube and a flexible inner driver tube movable within the outer guide tube for driving an electrode holder holding an electrode which is screwed into the head of a fetus in the womb. The outer guide tube has a substantial angularity or bend proximate the forward end. Finger engaging projections, or other irregularity, are provided on the exterior of the outer guide tube, proximate the substantial angularity, for positioning of the apparatus and assuring that the force vector created during use of the device is toward the fetus. Pushing of the inner driver tube causes rotation of the holder and the electrode mounted in it. In an alternative embodiment, the inner driver tube has a highly flexible portion, such as a coil spring, proximate the substantial angularity or bend of the outer guide tube, permitting smooth rotation of the internal driver tube and electrode.

REFERENCES:
patent: 3827428 (1974-08-01), Hon et al.
patent: 4301806 (1981-11-01), Helfer
patent: 4321931 (1982-03-01), Hon
patent: 4577635 (1986-03-01), Meredith
patent: 4813425 (1989-03-01), Malis
patent: 4836208 (1989-06-01), Ulbrich
patent: 4913151 (1990-04-01), Harui et al.

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