Patent ID: 8529524

Claim:
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 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, the variable volume region being a part of the flow path, the gland member having an inward projection extending into and obstructing 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.