Valved PRN adapter for infusion devices

Details Valved PRN adapter for infusion devices Valved PRN adapter for infusion devices

1994-08-10

1996-07-16

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

2511491, 604256, 604905, F16L 3728

Patent

active

055357717

ABSTRACT:
A valved adapter for a medical access device includes a body with a longitudinal axis. The body has a proximal first end, a distal second end and a passageway therethrough which has an inside surface. The passageway has a chamber defined by a proximal shoulder and a segmented distal shoulder both projecting inwardly from the surface of the passageway. The chamber is located intermediate the first end and second end of the body. The adapter includes a valve contained within the chamber for selectively obstructing and allowing fluid flow through the passageway. The valve includes an elongate resilient member with an axis substantially coaxial to the longitudinal axis of the body having a proximal end and a distal end. The elongate resilient member is axially compressed between the distal shoulder and the proximal shoulder, the compression biasing the valve to a normally closed position. The proximal end of the resilient member forms a substantially fluid tight seal with the proximal shoulder which obstructs fluid flow through the passageway. The adapter further includes a pusher for selectively further axially compressing the resilient member so that the proximal end of the adapter no longer forms a fluid tight seal with the proximal shoulder thereby allowing fluid flow through the passageway. The adapter includes fittings for attaching the adapter to a medical access device and for attaching fluid delivery devices to the adapter.

REFERENCES:
patent: 4934655 (1990-06-01), Blenkush et al.
patent: 5085645 (1992-02-01), Purdy et al.
patent: 5108380 (1992-04-01), Herlitze et al.
patent: 5251873 (1993-10-01), Atkinson et al.
patent: 5269771 (1993-12-01), Thomas et al.
patent: 5289849 (1994-03-01), Paradis

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