Multiple sample needle valve
First Claim
1. A cup valve apparatus for a multiple blood sample assembly, comprising(a) an annular valve body;
- (b) an annular valve skirt having an upper and lower end, said valve skirt depending from said valve body at the upper end of said skirt and integral therewith, said skirt diverging from the axis of said body;
(c) an integral support protrusion extending from said valve body centrally of said skirt along the axis of said body;
(d) a flattened annular projection extending from said body on the side thereof opposite said skirt and said protrusion, said projection being coaxial with said body;
the improvement characterized by(e) an integral annular spike on said skirt adjacent the lower end thereof; and
(f) said spike extending radially from the side wall of said skirt.
1 Assignment
0 Petitions
Accused Products
Abstract
A one-way valve is provided for a multiple blood sample needle which valve is self-sealing between the taking of each sample. The valve is a cup valve which utilizes an annular spike arrangement adjacent the bottom of the skirt of the valve for enhancing the sealing effects thereof. In addition, the pedestal-like internal support for the valve is configured to reduce the degree of deflection inwardly of the skirt of the valve, upon opening, which reduction has the effect of reducing the degree of convolution of the circumferential extent of the skirt during the deflection. The revised internal pedestal support reduces, also, any tendency of the valve to cock out of alignment with the longitudinal axis of the valve and its internal support in its normal position.
38 Citations
11 Claims
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1. A cup valve apparatus for a multiple blood sample assembly, comprising
(a) an annular valve body; -
(b) an annular valve skirt having an upper and lower end, said valve skirt depending from said valve body at the upper end of said skirt and integral therewith, said skirt diverging from the axis of said body; (c) an integral support protrusion extending from said valve body centrally of said skirt along the axis of said body; (d) a flattened annular projection extending from said body on the side thereof opposite said skirt and said protrusion, said projection being coaxial with said body; the improvement characterized by (e) an integral annular spike on said skirt adjacent the lower end thereof; and (f) said spike extending radially from the side wall of said skirt. - View Dependent Claims (2, 3, 4)
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5. A multiple sample blood collection apparatus comprising
(a) a housing having a chamber disposed therein; -
(b) said chamber having an intravenous end adapted to be in flow communication with a blood source, and a negative pressure end adapted to be in flow communication with a negative pressure source; (c) an annular valve body disposed in said chamber; (d) an annular valve skirt having an upper and lower end, said valve skirt depending from said valve body at the upper end of said skirt and integral therewith;
said skirt diverging from the axis of said valve body toward said negative pressure end;
said chamber having walls adjacent said valve skirt;(e) an integral support protrusion extending from said valve body centrally of said skirt along the axis of said body; (f) a flattened annular projection extending from said body on the side thereof opposite said skirt and said protrusion, said projection being coaxial with said body; (g) a coaxial valve mounting structure positioned centrally in said chamber and extending from the negative pressure end thereof; (h) a recess in said valve mounting structure receiving said support protrusion on said valve; the improvement characterized by (i) an integral annular spike on said skirt adjacent the lower end thereof; and (j) said spike extending radially from the side wall of said skirt and being in cooperating sealing engagement with the walls of said housing chamber adjacent said spike. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification