초록 ▼

A needleless injection site comprising a housing which defines an interior chamber and a central opening which communicates with the interior chamber. The housing further comprises an elongate, proximally extending dilator projection portion which defines a fluid passage. Disposed within the central

A needleless injection site comprising a housing which defines an interior chamber and a central opening which communicates with the interior chamber. The housing further comprises an elongate, proximally extending dilator projection portion which defines a fluid passage. Disposed within the central opening and the interior chamber is a reseal member which has an elastically openable and closable aperture disposed therein and defines an expandable and collapsible internal reservoir. The reseal member normally resides in a first position within the housing wherein the aperture is in a closed configuration and the reservoir is collapsed. The reseal member is deformable such that the application of distally directed pressure thereto will cause the reseal member to distally advance within the housing to a second position wherein the aperture assumes an open configuration and communicates with the fluid passage and the reservoir. The cessation of the application of distally directed pressure to the reseal member will cause it to resiliently return to the first position wherein the aperture reassumes the closed configuration and the reservoir is collapsed. The collapse of the reservoir is adapted to prevent the creation of a vacuum within the fluid passage when the reseal member resiliently returns to its first position.

대표청구항 ▼

[ What is claimed is:] [1.] A needleless injection site, comprising:a housing defining an interior chamber and having an inlet and an outlet;a dilator disposed in the interior chamber in fluid communication with the inlet and the outlet;a reseal member disposed in the interior chamber for movement b

[ What is claimed is:] [1.] A needleless injection site, comprising:a housing defining an interior chamber and having an inlet and an outlet;a dilator disposed in the interior chamber in fluid communication with the inlet and the outlet;a reseal member disposed in the interior chamber for movement between a proximal position and a distal position wherein the reseal member has a proximal portion defining an aperture therein;a radial leaf spring disposed in the reseal member wherein the radial leaf spring biases the aperture closed when the reseal member is in the proximal position; anda spring to bias the reseal member to the proximal position, wherein when the reseal member is in the distal position the radial leaf spring engages the dilator such that the radial leaf spring biases the aperture open.