Catheter type ultrasound probe
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United States of America Patent
Stats
-
Jan 28, 1997
Grant Date -
N/A
app pub date -
Mar 14, 1995
filing date -
Apr 7, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A catheter type ultrasound probe having an elongated flexible catheter and a controller for a rotational driver for the ultrasound transducer on the catheter member. The device includes a flexible sheathing tube closed at the fore end, a rotatable support member located in a tip end portion of the sheathing tube, an ultrasound transducer mounted on the rotatable support member and a flexible transmission shaft including at least a transmission coil having a series of intimately contacting helices. The flexible transmission shaft extends through the sheathing tube and is connected at the fore end to the rotatable support member. A rotational shaft is coupled to the other end of the flexible transmission shaft and is rotationally driven from the rotational driver on the controller. A pair of fore and rear stoppers located in the fore and rear end portions of the catheter retain the flexible transmission shaft in a tensioned state between predetermined head and tail end positions.
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