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US 5,935,063 AGranted
Electrode catheter system and methods thereof
AssigneeIrvine Biomedical, Inc.
InventorTho Hoang Nguyen
Life of this patent
Estimating the term…
Abstract
An electrode catheter system suitable for electrophysiology mapping and/or radiofrequency ablation of cardiac tissue comprises a catheter shaft having a distal end, a proximal handle, and at least a lumen extending therebetween, wherein a distal section of the shaft is either a fixed curve or deflectable; and safety restricting means at the very distal end of the catheter shaft being provided to maintain the integrity of the catheter by holding the tip electrode in place from thermal cycling effect.
Claims20
An electrode catheter system comprising:
- (a) a catheter shaft having a distal section, a distal end, a proximal end, and at least one lumen extending therebetween;
- (b) a handle attached to the proximal end of the catheter shaft;
- (c) a plurality of electrodes disposed at the distal section, wherein a tip electrode is secured at the distal end of the catheter;
- and
- (d) an appropriate ring with its inner diameter matching the outer diameter of the catheter shaft being secured on the outside of very distal end of the catheter shaft to restrict the distal end from thermal expansion during thermal cycling.
2 more elements
An electrode catheter system comprising:
- (a) a catheter shaft having a distal section, a distal end, a proximal end, and at least one lumen extending therebetween;
- (b) a handle attached to the proximal end of the catheter shaft;
- (c) a plurality of electrodes disposed at the distal section, wherein a "captive" tip electrode of said electrodes is secured at the distal end of the catheter shaft and said tip electrode is comprised of a ring portion, a stem portion and a cylindrical space thereinbetween;
- and
- (d) a reduced distal end of the catheter shaft being sandwiched firmly into said space of the tip electrode to restrict said distal end from thermal expansion during thermal cycling.
2 more elements
An electrode catheter system comprising:
- (a) a catheter shaft having a distal section, a distal end, a proximal end, and at least one lumen extending therebetween;
- (b) a handle attached to the proximal end of the catheter shaft;
- (c) a plurality of electrodes disposed at the distal section, wherein a tip electrode is secured at the distal end of the catheter;
- (d) an extended stem of the tip electrode having at least one open slot in the axial direction on the stem being provided;
- and
- (e) an appropriate ring with its inner diameter matching the outer diameter of the catheter shaft being secured on the outside of very distal end of the catheter shaft to restrict the distal end from thermal expansion during thermal cycling.
3 more elements
Dependencies are inferred from the claim text.