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:
Feb. 24, 2026
Filed:
Jan. 25, 2023
Medtronic, Inc., Minneapolis, MN (US);
Wing-Choi MA, Maple Grove, MN (US);
Nicholas Ruchti, Minneapolis, MN (US);
Nicholas L. Nagel, Blaine, MN (US);
Martin Rochon, Les Cedres, CA;
Daniel T. Dreier, Mounds View, MN (US);
Cary M. Ley, Plymouth, MN (US);
Julia A. Schraut, Shoreview, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
Systems and methods for controllable delivery of pressurized refrigerant to a medical device, such as a cryoablation catheter. In some examples, a delivery system includes a tank holding the pressurized refrigerant, an electrical heater arranged to heat the tank, and an electronic controller connected to regulate the heater based on input signals received from a plurality of sensors including a temperature sensor in thermal contact with the exterior surface of the tank and a pressure sensor for measuring pressure in the refrigerant-delivery line connecting the tank to the medical device. In operation, the electronic controller processes the input signals by comparing values of at least some of the input signals with respective threshold values and uses logic operations configured for combined processing of two or more of the input signals to decide when to switch the heater between an ON state and an OFF state.