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 defines a proximally extending dilator projection portion which is co-axially aligned with the central opening and a distally ext

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 defines a proximally extending dilator projection portion which is co-axially aligned with the central opening and a distally extending adapter portion. The dilator projection and adapter portions define a continuous fluid passage. Disposed within the central opening and the interior chamber is a reseal member which has an elastically openable and closable aperture formed therein. The reseal member normally resides in a first position within the housing wherein the aperture is in a closed configuration. 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. 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.

대표청구항 ▼

A needleless injection site, comprising: a housing defining: an interior chamber; a central opening which communicates with the interior chamber; an elongate, proximally extending dilator projection portion; and an elongate, distally extending adapter portion, said dilator projection and adapter por

A needleless injection site, comprising: a housing defining: an interior chamber; a central opening which communicates with the interior chamber; an elongate, proximally extending dilator projection portion; and an elongate, distally extending adapter portion, said dilator projection and adapter portions defining a continuous fluid passage; a reseal member disposed within said central opening and said interior chamber, said reseal member comprising: a resilient body having a distal end and a proximal end which defines inner and outer surfaces and includes an elastically openable and closable aperture extending therethrough between the inner and outer surfaces thereof; a radial leaf spring disposed within said body and adapted to apply a radially inward biasing force to the proximal end which normally maintains the aperture in a closed configuration; and an elongate doughnut spring having a first end which is abutted against the distal end of the body, a second end, and a bore extending longitudinally therethrough, said dilator projection portion being extended through the bore of the doughnut spring and into the radial leaf spring; said reseal member being deformable such that the application of distally directed pressure to the outer surface of the proximal end will cause the radial leaf spring to be distally advanced over the dilator projection portion which facilitates the radial expansion of the aperture to an open configuration communicating with the fluid passage, and the removal of the distally directed pressure from the outer surface will cause the radial leaf spring to be proximally withdrawn from over the dilator projection portion which facilitates the resilient return of the aperture to the closed configuration.