Double sleeve safety syringe
First Claim
1. A safety syringe, comprisinga syringe having proximal and distal ends and including a generally elongate tubular barrel section extending therebetween, and a needle attached to the distal end of the barrel section,a locating ring having a body section attached to the distal end of said barrel section and including an outwardly extending projecting means extending therefrom,an elongate first sleeve having proximal and distal ends movable over said barrel section and locating ring between a retracted position wherein the needle is exposed and an extended position wherein said first sleeve surrounds the needle, said first sleeve including an elongate slot therein extending proximally from the distal end of said first sleeve and wherein the projecting means of said locating ring extends therethrough, anda second sleeve having proximal and distal ends and which is movable over said first sleeve wherein said second sleeve cooperates with said projecting means on said locating ring to retain the first sleeve therebetween in the extended position.
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0 Petitions
Accused Products
Abstract
An improved safety syringe is disclosed herein comprising a locating ring positioned on the distal end of a syringe barrel and a pair of first and second sleeves which interact with a projecting tab on the locating ring to movably retain the first sleeve in retracted and extended positions and wherein in the extended position one of the sleeves enclose the syringe needle in an irreversible locked arrangement.
162 Citations
32 Claims
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1. A safety syringe, comprising
a syringe having proximal and distal ends and including a generally elongate tubular barrel section extending therebetween, and a needle attached to the distal end of the barrel section, a locating ring having a body section attached to the distal end of said barrel section and including an outwardly extending projecting means extending therefrom, an elongate first sleeve having proximal and distal ends movable over said barrel section and locating ring between a retracted position wherein the needle is exposed and an extended position wherein said first sleeve surrounds the needle, said first sleeve including an elongate slot therein extending proximally from the distal end of said first sleeve and wherein the projecting means of said locating ring extends therethrough, and a second sleeve having proximal and distal ends and which is movable over said first sleeve wherein said second sleeve cooperates with said projecting means on said locating ring to retain the first sleeve therebetween in the extended position.
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9. A safety device, comprising
a device having proximal and distal ends and a generally tubular barrel section extending therebetween, and a needle attached to the distal end of the barrel section, a locating ring attached to the distal end of said barrel section, an elongate first sleeve having proximal and distal ends movable over said barrel section and locating ring and including a longitudinal slot extending proximally from the distal end thereof and wherein said first sleeve is movable between a retracted position wherein said needle is exposed and an extended position wherein the first sleeve surrounds the needle, a second sleeve having proximal and distal ends movable over said first sleeve and said barrel section and wherein the second sleeve retains the proximal end of said first sleeve in the extended position, and a projecting means extending between the locating ring and the first sleeve to retain the first sleeve in the retracted and extended positions.
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15. A safety syringe, comprising
a syringe having proximal and distal ends and a barrel section extending therebetween, a plunger slidable within the barrel section, and a needle attached to the distal end of the barrel section, a locating ring attached to the distal end of the barrel section and including a projecting means extending outwardly therefrom, an elongate first sleeve having proximal and distal ends movable over said barrel section and locating ring between a retracted position wherein the needle is exposed and an extended position wherein the needle is surrounded, said first sleeve including an elongate slot therein extending proximally from the distal end of said first sleeve and wherein said projecting means extends therethrough, and a second sleeve having proximal and distal ends movably positioned on said first sleeve wherein said second sleeve cooperates with said locating ring to retain and compress the first sleeve therebetween in the extended position.
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25. A safety syringe, comprising
a syringe having proximal and distal ends, a barrel section extending therebetween, and a needle attached to the distal end of the barrel section, a locating ring attached to the distal end of the barrel section and including a projecting means extending outwardly therefrom, ends movable over said barrel section between a retracted position wherein the needle is exposed and an extended position wherein the needle is surrounded, said first sleeve including an elongate slot therein extending proximally from the distal end of said first sleeve and wherein said projecting means extends therethrough, a second sleeve having proximal and distal ends movable over said first sleeve wherein said second sleeve and said locating ring cooperate to maintain the first sleeve in the retracted position, and a hinge means on said second sleeve to releaseably retain said projecting means therein when said first sleeve is in the retracted position.
Specification