Contact sensor and sheath exit sensor

US8998826B2 · kind B2 · utility

Assignee

• St. Jude Medical, Atrial Fibrillation Division, Inc. · US

Inventors

• John A. Hauck · Shoreview, US
• Jeffrey A. Schweitzer · Windom, US
• Kenneth H. Drew · Brooklyn Park, US

Key dates

• Filing date: Sep 10, 2012
• Grant date: Apr 7, 2015
• Expiry date: May 6, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/0214
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system and method is provided that allows for determining the local impedance of one or more electrodes of an electrode catheter. Such local impedance may be utilized to identify the relative position of an electrode catheter to a sheath of a guiding introducer. In another arrangement, local impedance of a catheter electrode can be utilized to calibrate a catheter electrode to provide improved contact sensing.