Catheter having probes for correcting for non-uniform rotation o

Details Catheter having probes for correcting for non-uniform rotation o Catheter having probes for correcting for non-uniform rotation o

1998-06-10

2000-02-01

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600462, 600463, A61B 814

Patent

active

060197269

ABSTRACT:
A catheter for imaging a cavity. The catheter includes a sheath having a distal end that is introduced into a cavity to be imaged and a proximal end that resides outside of the cavity. The sheath includes a tubular member with a first fixed probe located proximate to the distal end and fixed in relation to the tubular member while the cavity is being imaged. The catheter also includes a transducer for delivering an energy pulse in a predetermined direction relative to the transducer and collecting echoes generated by the pulse. The transducer is located within the sheath proximate to the distal end of the sheath and includes a transducer probe affixed to the transducer. A drive cable in the catheter causes the transducer and the transducer probe to rotate relative to the sheath. The drive cable connects the transducer to a mechanical drive mechanism located at the proximate end of the sheath. A tracking circuit measures the electrical coupling between the transducer probe and the first fixed probe to determine the location of the transducer relative to the sheath.

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