Jeffrey S Crowley

US Patent:

20050148957, Jul 7, 2005

Filed:

Jan 6, 2004

Appl. No.:

10/752257

Inventors:

Mark Girard - Waltham MA, US
Todd Beaupre - Reading MA, US
Benjamin Bell - Haverhill MA, US
Mark Wolfson - Wellesley MA, US
Richard Nisil - Blackstone MA, US
Jeffrey Crowley - Milford MA, US
Nathan Murphy - Westborough MA, US

International Classification:

A61M031/00

US Classification:

604288020

Abstract:

An access port comprises a housing with a first opening formed therein and a septum mounted within the housing sealing the first opening, the septum including an outer surface covering the first opening and self-sealing after penetration by a needle and an attachment portion for securing the septum to the housing, the attachment portion including a chamfer which, when the septum is mounted within the housing is subject to a force oriented substantially perpendicularly with respect to a plane of the outer surface, the chamfered portion redirecting a portion of the force to compress the outer surface. A septum for an access port comprises an attachment portion adapted to abut a septum seat of the access port and an operative surface adapted to permit penetration by a needle and resealing itself after removal of the needle in combination with a chamfered portion providing a transition between the attachment portion and the operative surface, the chamfered portion re-directing a component of a force applied to the chamfered portion to compress the operative surface.