Check valve for blood drawing apparatus

Details Check valve for blood drawing apparatus Check valve for blood drawing apparatus

1979-08-02

1981-01-13

Yasko, John D.

Surgery

Truss

Pad

128218NV, A61B 514

Patent

active

042443792

ABSTRACT:
A check valve is disclosed for use in blood drawing apparatus wherein it is desired to draw multiple samples from a single needle inserted into a patient's arm for use in a variety of medical tests. The check valve includes therein a valve member formed of a piece of a silicone elastomer which has a slit formed therein, the slit opening only when fluid pressure is greater in the patient than in the vessel into which the blood is being drawn. The check valve is of particularly small size so that it may be mounted within a conventionally sized double-needle fitting normally used in blood drawing apparatus.

REFERENCES:
patent: 3577980 (1971-05-01), Cohen
patent: 3817240 (1974-06-01), Ayres
patent: 3848579 (1974-11-01), Villa-Real

Affiliated with

Also associated with

Rating

Check valve for blood drawing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve for blood drawing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve for blood drawing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2226976