Patent ID: 7914502
Filing Date: 2011-03-29
Classification: A61M

Abstract:
1. A medical valve having an open mode that permits fluid flow through an internal flow path, the medical valve also having a closed mode that prevents fluid flow through the internal flow path, the medical valve comprising: a housing forming an interior containing the flow path; a stationary post member within the interior, the post member having a lumen that is a part of the flow path and a solid wall surrounding and defining the lumen, the lumen having an opening to the interior of the housing; and a gland member circumscribing the post member to form a variable volume region, the variable volume region being formed at least in part between the gland member and the post member and extending above the post member, the variable volume region being a part of the flow path, the gland member occluding the post lumen opening when in the closed mode, at least a portion of the post member lumen extending into the gland member, the variable volume region having a closed volume when in the closed mode the variable volume region having an open volume when in the open mode, the open volume being no less than the closed volume.