Title:
改良式安全寒冷療法用カテーテル
Document Type and Number:
Japanese Patent JP2004504098
Kind Code:
A
Abstract:
Improved devices, systems, and methods for inhibiting hyperplasia in blood vessels provide controlled and safe cryotherapy treatment of a target portion within a body lumen of a patient. Efficacy of endoluminal cryogenic cooling can be enhanced by limiting cooling of target tissue using a thermal barrier disposed between a dual balloon cryotherapy catheter. Containment of both balloons can be monitored by applying a vacuum within a space between the first and second ballons, and by coupling the vacuum space to a fluid shutoff so as to inhibit flow of cryogenic fluid in response to a change in the vacuum space. Controlled cooling of the vessel can be improved by use of a nebulizer in fluid communication with a cryogenic liquid lumen and a gas supply lumen.
Inventors:
Ronald Williams
Williams, richard, es
Joy, james, di
Holland, Timothy, Di
Williams, richard, es
Joy, james, di
Holland, Timothy, Di
Application Number:
JP2002513368A
Publication Date:
February 12, 2004
Filing Date:
July 03, 2001
Export Citation:
Assignee:
Clio Vascular Systems Incorporated
International Classes:
A61B17/00; A61B18/02; A61B18/12; A61F7/12; A61M25/00; F25D3/10; A61B17/22; (IPC1-7): A61B18/02; A61B17/00; A61M25/00
Domestic Patent References:
| JPH11347128A | 1999-12-21 | |||
| JP2001524345A | 2001-12-04 | |||
| JPH01150958U | 1989-10-18 |
Foreign References:
| US5868735A | 1999-02-09 |
Attorney, Agent or Firm:
Shuichiro Kitamura