Trocar seal assembly

US9486241B2 · kind B2 · utility

Assignee

• Ethicon Endo-Surgery, Inc. · US

Inventors

• Mark S. Zeiner · Milford, US
• Paul T. Franer · Cincinnati, US
• Michael S. Cropper · Edgewood, US
• Thomas A. Gilker · Cincinnati, US
• Geoffrey C. Hueil · Cincinnati, US
• David K. Norvell · Woodsfield, US
• Brian J. Thompson · Aliso Viejo, US
• Aaron C. Voegele · Loveland, US

Key dates

• Filing date: Mar 31, 2004
• Grant date: Nov 8, 2016
• Expiry date: Jul 15, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2039/0686
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A trocar for performing a procedure on a patient. The trocar has a hollow cannula with a distal end and a proximal end. The trocar also has a housing with a distal end attached to the proximal end of the cannula and a proximal end having a wall attached thereto. The wall has an aperture therethrough. The trocar further includes a seal assembly disposed within the housing. The seal assembly includes a first substantially rigid ring, a second substantially rigid ring, and a plurality of layered elastomeric members compressed therebetween. The first ring has a plurality of distally extending protrusions extending from a distal surface thereof, and the second ring has a plurality of proximally extending protrusions extending from a proximal surface thereof.