Safety disposable needle structure
First Claim
1. A disposable needle system for use by an operator in obtaining blood from a patient comprising, in combination:
- needle means having a first open end for insertion into the vein of a patient and having a second open end for transferring the patient blood to a collection device;
a needle support member integrally attached to and disposed between the ends of said needle means;
a first retractable sleeve having a first open end and a second rounded end and disposed over said first open end of said needle means with the rounded end thereof being adjacent to, and providing ingress and egress for, said first open end of said needle means;
a second retractable sleeve having an open end and a rounded end and disposed over said second open end of said needle with the rounded end thereof being adjacent to, and providing ingress and egress for, said second open end of said needle means;
first spiral spring means encompassing said first open end of said needle and extending from said rounded end of said first retractable sleeve to said needle support member;
second spiral spring means encompassing said second open end of said needle and extending from said rounded end of said second retractable sleeve to said needle support member;
said open end of said first retractable sleeve telescopically receiving said open end of said second retractable sleeve,a housing surrounding said needle support member and said telescoped open ends of said first and said second retractable sleeves;
means on said first retractable sleeve to facilitate manual retraction thereof against the pressure of said first spiral spring;
detent means disposed on said first retractable sleeve to assist in releasably locking said first retractable in a retracted position;
means on said housing for receiving said detent means when said first retractable sleeve is retracted;
release means carried by said housing to effect release of said detent means from said means on said housing for receiving said detent means;
whereby,said first and said second retractable sleeves are movable from a first position wherein they provide a protective cover from the respective first and second open needle ends to a position wherein the first and second needle ends are exposed for use in obtaining and collecting blood from a patient and, after use, said first and said second retractable sleeves are moved back to the first position and thereby reduce the chance of accidental needle sticking of an individual handling and disposing of the used needle system.
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Accused Products
Abstract
A disposable needle having individual, spring biased, first and second retractable, open protective sleeves. The first retractable sleeve covers the needle end employed to extract patient blood and the second retractable sleeve covers the needle end that transfers blood to a collection tube. Each sleeve is provided with diametrically disposed slits receiving diametrically disposed ear extensions on the needle support. A support segmented housing maintains the sleeves and needle into a unitary structure. Detents are disposed on the end of the first sleeve that telescopingly receives the open end of the second sleeve. In use, the first sleeve is manually retracted and the detents secure the sleeve in retracted position. A tubular support on the opposite end of the segmented housing receives a blood collection tube therein that forcibly retracts the second sleeve and permit penetration of the blood collection tube. When the blood retraction tube is withdrawn, the second sleeve again provides a protective cover for the needle tip. Upon patient needle removal, the user grasps a pair of arms on the segmented housing and structure thereon removes the detents to permit spring return of the first sleeve to protective needle tip covering status.
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Citations
10 Claims
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1. A disposable needle system for use by an operator in obtaining blood from a patient comprising, in combination:
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needle means having a first open end for insertion into the vein of a patient and having a second open end for transferring the patient blood to a collection device; a needle support member integrally attached to and disposed between the ends of said needle means; a first retractable sleeve having a first open end and a second rounded end and disposed over said first open end of said needle means with the rounded end thereof being adjacent to, and providing ingress and egress for, said first open end of said needle means; a second retractable sleeve having an open end and a rounded end and disposed over said second open end of said needle with the rounded end thereof being adjacent to, and providing ingress and egress for, said second open end of said needle means; first spiral spring means encompassing said first open end of said needle and extending from said rounded end of said first retractable sleeve to said needle support member; second spiral spring means encompassing said second open end of said needle and extending from said rounded end of said second retractable sleeve to said needle support member; said open end of said first retractable sleeve telescopically receiving said open end of said second retractable sleeve, a housing surrounding said needle support member and said telescoped open ends of said first and said second retractable sleeves; means on said first retractable sleeve to facilitate manual retraction thereof against the pressure of said first spiral spring; detent means disposed on said first retractable sleeve to assist in releasably locking said first retractable in a retracted position; means on said housing for receiving said detent means when said first retractable sleeve is retracted; release means carried by said housing to effect release of said detent means from said means on said housing for receiving said detent means;
whereby,said first and said second retractable sleeves are movable from a first position wherein they provide a protective cover from the respective first and second open needle ends to a position wherein the first and second needle ends are exposed for use in obtaining and collecting blood from a patient and, after use, said first and said second retractable sleeves are moved back to the first position and thereby reduce the chance of accidental needle sticking of an individual handling and disposing of the used needle system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification