Catheter with atraumatic tip
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorsEric S. Olson, James V. Kauphusman, Linda K. Nemec, Troy T. Tegg
Life of this patent
Estimating the term…
Abstract
A medical device is provided comprising a shaft comprising a first segment and a second segment. The first segment is configured to buckle upon application of a first critical force. The second segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force. The second critical force is lower than the first critical force. The medical device further comprises a coil disposed radially inwardly of the inner surface of the second segment.
Claims21
-20. (canceled)
A medical device comprising:
- a shaft comprising an axis and comprising a first, proximal segment and a second, distal segment, and wherein said second, distal segment includes a proximal end and a distal end,
- wherein the first, proximal segment is configured to buckle upon application of a first critical force thereto;
- wherein the second, distal segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force thereto that is lower than the first critical force;
- and
- a coil disposed radially inwardly of the inner surface of the second, distal segment, said second, distal segment being further configured to limit the amount of force transmitted by the second, distal segment to tissue contacting the second, distal segment after an application of the second critical force to the second, distal segment as the device is advanced over a distance toward the tissue;
- and
- a field sensor located on or within the shaft responsive to a magnetic field generated by a medical positioning system wherein the field sensor is configured to output a field sensor signal indicative of at least one of a position and an orientation of the field sensor.
A medical device comprising:
- a shaft comprising an axis and comprising a first, proximal segment and a second, distal segment, and wherein said second, distal segment includes a proximal end and a distal end,
- wherein the first, proximal segment is configured to buckle upon application of a first critical force thereto;
- wherein the second, distal segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force thereto that is lower than the first critical force;
- and
- means for maintaining an amount of force by the second, distal segment to tissue contacting the second, distal segment after an application of the second critical force to the second, distal segment as the device is advanced over a distance toward the tissue;
- and
- a field sensor located on or within the shaft responsive to a magnetic field generated by a medical positioning system wherein the field sensor is configured to output a field sensor signal indicative of at least one of a position and an orientation of the field sensor.
Dependencies are inferred from the claim text.