Catheter with pull wire measurement feature
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorsJohn A. Hauck, Mark T. Johnson
Life of this patent
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Abstract
An apparatus for determining a length of a portion of a steering wire disposed within a bendable medical device includes an electrical contact slidably coupled with a steering wire, an electrical source configured to transmit an electrical signal through a portion of the steering wire, and a processor configured to monitor a parameter of the electrical signal at or about the electrical contact and configured to determine a length of a portion of the steering wire using the monitored parameter.
Claims19
An apparatus for determining a length of a distal portion of a steering wire disposed within a bendable medical device, the apparatus comprising:
- an electrical contact slidably coupled with the steering wire, wherein the steering wire comprises a proximal end connected to a control member adapted to manipulate the steering wire and control deflection of the bendable medical device;
- a pull ring coupled to a distal portion of the steering wire;
- an electrical source configured to transmit a first electrical signal through the distal portion of the steering wire;
- and
- a processor configured to monitor a first parameter of the first electrical signal at or about the electrical contact and configured to determine the length of the distal portion of the steering wire using the monitored first parameter;
- wherein the length of the distal portion of the steering wire corresponds to a length of the steering wire between the electrical contact and the pull ring.
Dependencies are inferred from the claim text.