Ultrasonic imaging catheter
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United States of America Patent
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-
Apr 14, 1998
Grant Date -
N/A
app pub date -
Jun 27, 1996
filing date -
Jun 30, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ultrasonic imaging catheter includes an outer sheath that is adapted to be inserted into a body cavity, and a drive shaft that is positioned in the outer sheath for transmitting mechanical driving force. The catheter is also provided with first and second elastic members. The first elastic member is disposed at the tip portion of the outer sheath while the second elastic member that is secured to the housing containing a transducer has a free end that is inserted into the first elastic member. The portion of the catheter between the housing and the first elastic member at the free end of the catheter is thus reinforced to improve flexibility and kinking of the catheter. The housing can be made of insulating ceramic material so that the insulation and resistance of the housing is high. Thus, a short between the electrodes of the oscillator does not occur even when the oscillator is in direct contact with the housing.
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