Interference-fit shroud-based cardiac electrodes

US7881765B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• John C. Mertz · Mason, US
• Bryan J. Zart · Shakopee, US
• James Strom · Arden Hills, US
• Michael D. Fletcher · Minneapolis, US
• John E. Nicholson · Blaine, US
• Steven J. Fischer · Hankinson, US

Key dates

• Filing date: Apr 28, 2006
• Grant date: Feb 1, 2011
• Expiry date: Oct 22, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3756
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Apparatus and method according to the disclosure relate to minimizing gaps between a substantially planar cardiac-sensing electrode and a shroud member utilizing a so-called interference-fit. For example, a relatively recessed area or aperture formed in an exemplary resin-based shroud member has slightly reduced dimensions relative to the electrode and requires compression forces during assembly (e.g., manually or in an automated process including a press, a tool or other means). The interference-fit promotes a very tight fit (or seal) between the metallic electrode and the resin-based shroud member and, importantly, minimizes gaps. Additionally, discrete interference structures promote fluid tight seals between the electrode and a recess or aperture adapted to receive the electrode.