Cryosurgery system

US9144449B2 · kind B2 · utility

Assignee

• CSA MEDICAL, INC. · US

Inventors

• Ron Burr · Parkton, US
• Rafael Cordero · Bedford, US
• Marc Davidson · Andover, US
• Wendelin Maners · Hermosa Beach, US
• Janel Petrilli · Pittsburgh, US

Key dates

• Filing date: Mar 4, 2013
• Grant date: Sep 29, 2015
• Expiry date: Mar 5, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2218/007
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A cryosurgery system for application of medical-grade liquid nitrogen to a treatment area via a small, low pressure, open tipped catheter. The system includes a console, including a touch panel computer, a cryogen module, a suction module and an electronics module, and a disposable spray kit. Features include optional low cryogen flow setting to reduce the cryogen flow rate by 50%, improved cryogen flow consistency reducing pressure pulses and peaks, an integrated suction pump for improved consistency and self-checks, specified vent tube areas and corresponding maximum expected pressures during cryospray procedure; optional pressure sensing capability to monitor pressure during a treatment, and novel catheter designs of multilayer and flexible construction providing a variety of spray patterns.