Title:
ELECTRODE CATHETER
Document Type and Number:
WIPO Patent Application WO/2013/183339
Kind Code:
A1
Abstract:
An electrode catheter is provided with: a shaft (10) having a lumen (11) serving as a fluid passage; an irrigation member (20); and a distal end electrode (30). Irrigation openings (25A) for supplying liquid, which is supplied from the shaft (10), to the surface of the distal end electrode (30) are provided in the irrigation member (20) at equal angular intervals. The distal end of the irrigation member (20) has formed therein liquid guide grooves (26) respectively extending from the irrigation openings (25A) toward the distal end. The distal end electrode (30) has a spherical distal end section (31) including a maximum-diameter section (39) and also has a proximal end section (32). Liquid guide grooves (36) are formed in the surface of the distal end electrode (30), and the liquid guide grooves (36) respectively continue to the guide grooves (26) in the irrigation member (20) and extend toward the distal end until the liquid guide grooves (36) reach at least the maximum-diameter section (39).
As a result, the electrode catheter is configured in such a manner that cauterization does not cause an abnormal temperature rise in a part of the distal end electrode, that the surface of the distal end electrode exhibits an excellent cooling effect and an excellent effect of preventing the formation of a thrombus, and that the electrode catheter can perform efficient cauterization treatment.
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Inventors:
MORI KENJI (JP)
Application Number:
PCT/JP2013/058878
Publication Date:
December 12, 2013
Filing Date:
March 26, 2013
Export Citation:
Assignee:
JAPAN LIFELINE CO LTD (JP)
International Classes:
A61B18/12; A61B18/04
Foreign References:
| JP2005521465A | 2005-07-21 |
Attorney, Agent or Firm:
AICHI, HIROSHI (JP)
Yoshitomo 宏 (JP)
Yoshitomo 宏 (JP)
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