A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
326/17.5
A61B 5/04 (2006.01) A61B 5/0444 (2006.01) A61B 5/0448 (2006.01) A61M 25/00 (2006.01) A61M 25/04 (2006.01) A61N 1/05 (2006.01)
Patent
CA 1121464
ABSTRACT OF THE DISCLOSURE A fetal electrode applicator for attaching a coil electrode to the skin of a fetus by moving the coil electrode forwardly through the forward end of an inserter tube intro- duced through the mother's vagina by means of a plunger includes cooperating helical thread-type means for converting linear force applied to the plunger to rotary motion of the coil electrode. In one embodiment, the helical thread-type means includes cooperating helical ribs and grooves on the electrode carrier and the forward interior wall of the inserter tube, and a plunger rod pushes the electrode carrier forwardly. In the preferred embodiment, helical grooves are formed on a motion converter which carries the electrode carrier, and radially-inwardly projecting pins on the forward interior wall of a plunger tube engage the helical grooves; and stop means are provided for limiting forward movement of the motion converter, whereby depression of the plunger after the coil electrode has moved forwardly a predetermined distance will result in only rotary motion of the coil electrode.
325161
Hon Edward D.
Marks & Clerk
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