Title:
ABLATION CATHETER
Document Type and Number:
WIPO Patent Application WO/2017/047545
Kind Code:
A1
Abstract:
This ablation catheter (200) comprises a cooling part (240) at the distal end of a long shaft (210). The cooling part (240) comprises a plurality of Peltier elements (250), an expansion body (260), and a balloon (270). The plurality of Peltier elements (250) are arranged on the surface of the shaft (210). The tubular expansion body (260) is in contact with heat absorption parts (251) of the Peltier elements (250). The balloon (270) covers the Peltier elements (250) and the expansion body (260). When a voltage is applied to the Peltier elements (250), heat is transferred from the heat absorption parts (251) to heat emission parts (252) on the opposite side of the Peltier elements (250). As a result, the expansion body (260) in contact with the heat absorption parts (251) is cooled. The junction (940) between the left atrium (920) and the pulmonary vein (940) is subjected to cryocoagulation using the expansion body (260) via the balloon (270). The heat that is transferred to the heat emission parts (252) is transported away by a cooling medium (C) flowing through a flow path (281) in the shaft (210).
Inventors:
OOKUBO ITARU (JP)
OOMORI SHIGERU (JP)
NAKAGAWA YUUJI (JP)
OOMORI SHIGERU (JP)
NAKAGAWA YUUJI (JP)
Application Number:
PCT/JP2016/076783
Publication Date:
March 23, 2017
Filing Date:
September 12, 2016
Export Citation:
Assignee:
TERUMO CORP (JP)
International Classes:
A61B18/02
Domestic Patent References:
| WO2013164820A1 | 2013-11-07 | |||
| WO2012140439A1 | 2012-10-18 |
Foreign References:
| JP2011520515A | 2011-07-21 |
Attorney, Agent or Firm:
MASUDA, Tatsuya (JP)
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