Improved actuating handle with pulley system for providing mechanical advantage to a surgical working element
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United States of America Patent
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-
Dec 27, 1994
Grant Date -
N/A
app pub date -
Aug 19, 1993
filing date -
Aug 19, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A medical device has a body, an actuating member mounted to move relative to the body, a working element, and an elongated force-transmitting member capable of transmitting actuating force between the actuating member and the working element. The force-transmitting member includes a flexible cable portion, the force-transmitting member is attached, on one side of the cable portion, to the body and associated in a driving relationship on the opposite side of the cable portion with the working element. According to the invention the actuating member includes a pulley surface bodily movable therewith, the cable portion is trained about the pulley surface such that movement of the actuating member a given distance, relative to the body, causes the working element to move a substantially greater distance than the given distance. Another aspect of the invention is a medical snare with the above features.
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