Ultrasound imaging guidewire

Details Ultrasound imaging guidewire Ultrasound imaging guidewire

1992-09-17

1994-11-29

Jaworski, Francis

Surgery

Truss

Pad

12866003, 128772, A61B 812

Patent

active

053680359

ABSTRACT:
A medical guidewire has a substantially uniform small diameter throughout its length and incorporates means for lateral acoustic scanning, and the guidewire comprises a proximal connector, an extended main guidewire body portion, an axially elongated transition section, and a floppy tip portion, the main body portion comprises a stationary outer wall including means capable of transmitting torque and, within the outer wall, an elongated rotatable shaft with a distally positioned acoustic imaging transducer mounted thereon, the proximal connector is constructed to be attached to and detached from a drive device to enable a therapeutic device to be introduced over the guidewire, the connector has a stationary portion secured to the outer wall and an inner drive portion secured to the shaft, the floppy tip portion comprises an outer wire coil and a core rod which tapers from a relatively large diameter at a proximal joint with the outer wire coil to a floppy distal tip, and the elongated transition section serves to join the main body portion to the floppy tip section in a manner retaining substantially the same lateral stiffness as the main body portion and sufficient torquability to enable torquing of the floppy tip by torque applied to the proximal end of the guidewire.

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