Inventors:
Brian L. Newton - Woonsocket RI, US
Charles F. Ganem - Cape Neddick ME, US
David B. Woyak - Carolina RI, US
Richard T. Boisjoly - Nashua NH, US
International Classification:
A61M 5/00
Abstract:
A gland member within a medical valve is configured to have a substantially consistent or enlarging internal volume as the valve transitions from a closed mode to an open mode. To that end, the valve has a housing forming an interior containing a flow path, and a stationary post member within the interior. The post member has a lumen that is a part of the flow path. The lumen has an opening to the interior of the housing. The valve further includes a gland member circumscribing the post member to produce a variable volume region formed at least in part between the gland member itself and the post member. In addition, the variable volume region is a part of the flow path, while the gland member occludes the post lumen opening when in the closed mode. The variable volume region has an open volume (i. e. , when the valve is in the open mode) that is no less than its closed volume (i. e.