HOLLOW NEEDLE ASSEMBLY
First Claim
1. A hollow needle assembly comprising:
- a needle constructed of one or more than one part, the needle comprising a hub, wherein the hub comprises a back end with a blunt open end, a front end, and a passage, the needle further comprising a shaft having a sharp open end and a lumen, wherein the lumen is fluidly connected to the passage, and the needle further comprising a needle flow path defined along the lumen and the passage, beginning at the sharp open end and terminating at the blunt open end; and
a barrel constructed of one or more than one part, comprising an open anterior end through which a portion of the shaft of the needle passes, and an open posterior end through which a portion of the hub of the needle passes, the barrel further comprising an internal chamber for housing at least a portion of the needle.
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Accused Products
Abstract
Some embodiments of the invention provide a needle comprising a shaft with a sharp open end and a hub with a blunt open end, housed in a barrel with an open anterior end and an open posterior end. The hub of the needle can move forward inside the barrel, for extending the sharp open end of the shaft of the needle for insertion into a vessel, e.g. a blood vessel, a catheter, or a capped tube. After use, the hub can move backwards inside the barrel for retracting the shaft of the needle into the barrel. The blunt open end of the needle can be fluidly connected to the inlet opening of a measurement apparatus, so that the blood can flow directly from a vessel, into the measurement apparatus, without the use of a syringe. The hollow needle assembly can also be used with a traditional syringe, as an alternative to traditional needles, in order to minimize the risk of needle-stick injury.
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Citations
20 Claims
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1. A hollow needle assembly comprising:
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a needle constructed of one or more than one part, the needle comprising a hub, wherein the hub comprises a back end with a blunt open end, a front end, and a passage, the needle further comprising a shaft having a sharp open end and a lumen, wherein the lumen is fluidly connected to the passage, and the needle further comprising a needle flow path defined along the lumen and the passage, beginning at the sharp open end and terminating at the blunt open end; and
a barrel constructed of one or more than one part, comprising an open anterior end through which a portion of the shaft of the needle passes, and an open posterior end through which a portion of the hub of the needle passes, the barrel further comprising an internal chamber for housing at least a portion of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20)
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17. A hollow needle assembly comprising:
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a needle constructed of one or more than one part, the needle comprising a hub, wherein the hub comprises a back end with a blunt open end, a front end, and a passage, and the hub also having a first length dimension, the needle further comprising a shaft having a sharp open end and a lumen, and the shaft also having a second length dimension, wherein the lumen is fluidly connected to the passage, and the needle further comprising a needle flow path defined along the lumen and the passage, beginning at the sharp open end and terminating at the blunt open end, and wherein the first length dimension is greater than the second length dimension; and
a barrel constructed of one or more than one part, comprising an open anterior end through which a portion of the shaft of the needle passes, and an open posterior end through which a portion of the hub of the needle passes, the barrel further comprising an internal chamber for housing at least a portion of the needle.
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18. A hollow needle assembly comprising:
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a needle constructed of one or more than one part, the needle comprising a hub, wherein the hub comprises a back end with a blunt open end, a front end, and a passage, the needle further comprising a shaft having a sharp open end and a lumen, wherein the lumen is fluidly connected to the passage, and the shaft also having a first length dimension, and the needle further comprising a needle flow path defined along the lumen and the passage, beginning at the sharp open end and terminating at the blunt open end; and
a barrel constructed of one or more than one part, comprising an open anterior end through which a portion of the shaft of the needle passes, and an open posterior end through which a portion of the hub of the needle passes, the barrel further comprising an internal chamber for housing at least a portion of the needle, and the barrel also having a second length dimension, wherein the second length dimension is greater than the first length dimension.
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Specification