The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Dec. 02, 1997
Rony Ammar, Haifa, IL;
Mordechai Bliweis, Haifa, IL;
Glinka Ofer, Kiryat Bialik, IL;
Gideon Even Sturlesi, Cammon, IL;
Galil Medical Ltd., Yokneam, IL;
Abstract
Cryosurgery method and device for performing trans myocardial revascularization are provided. The method includes: forming trans myocardial channels by cryoablating selected portions of the myocardial tissue. The cryosurgery device includes:(a) an operating member having an operating surface and a hollow; and a housing member connected thereto; (b) a first passageway extending along the device for providing high pressure gas to the operating member, the first passageway including a primary Joule Thomson heat exchanger in the form of a primary orifice located on the first passageway for enabling expansion of gas within the hollow of the operating member, thereby providing a desired temperature to the surface of the operating member; (c) a second passageway extending through the length of the housing member for evacuating gas from the operating tip to atmosphere; (d) a third passageway extending along a portion of the device and including a secondary Joule Thomson heat exchanger for providing a desired temperature to gas flowing through the first passageway. Method and device according to the present invention enable to form durable transmyocardial channels without causing considerable trauma to the myocardial tissue.