Safe medical syringe and method of manufacture

Details Safe medical syringe and method of manufacture Safe medical syringe and method of manufacture

1992-02-28

1996-06-18

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604195, A61M 550, A61M 532

Patent

active

055272835

ABSTRACT:
Disposable medical syringe 10, consisting of a hollow syringe chamber 12, for receiving a piston 14, traversing a displaceable extendible path 16, in the chamber, a rod 18, axially coupled to one end of the piston 14, and at the other end to a thumb engaging surface 20, a stop member 22, in the hollow chamber 12, at a proximal end and adjacent to the rod 18 for terminating one end of the displaceable extendible path 16, a cap 30, securely but removably mounted at a distal end of the hollow chamber from the one end and having a tubular coupling 32, for receiving in frictional engagement a syringe needle 34, a supporting body for axially centering support of the needle within the hollow chamber and securely mounted to an inner end of the needle 34, a distal end of the needle 34, adapted for injection in a patient for serving to pass fluid received from the hollow chamber to pass into the patient, an annular projection 38 disposed about the tubular coupling 32, for latch-engaging the distal end of the needle therein, and a snap-socket fastener arrangement 50, consisting of one receiving-female portion 52, and one snap-fit-engaging male portion 54, fastening thereto, either the one or the other portions included on an end of the piston proximal the support body, and the other of the one or the other portions included on an end of the support body proximal the piston.

REFERENCES:
patent: 4804370 (1989-02-01), Haber et al.
patent: 5171300 (1992-12-01), Blake, III et al.
patent: 5215533 (1993-06-01), Robb
patent: 5263934 (1993-11-01), Haak

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