Systems for isolation of a needle-based infusion set
First Claim
1. A needle assembly, comprising:
- a handle portion including a needle defining a lumen for passage of a fluid therethrough;
a safety assembly selectively and axially slidable along the needle to shield a distal tip of the needle and prevent user contact therewith, the safety assembly including;
a base including a needle hole; and
a spring-based obstruction component biased to obstruct the needle hole after retraction of the needle distal tip into the base, the spring-based obstruction component including at least one shutter having a distal end designed to obstruct the needle hole, a proximal end coupled to the base, and a spring arm connecting the proximal end of the distal end; and
a fluid isolation component designed to isolate fluid escape from the needle, the fluid isolation component including an absorbent pad disposed on the at least one shutter, the distal tip of the needle resting against the absorbent pad after retraction of the needle distal tip into the base, the absorbent pad isolating fluid leaked from the needle so as to prevent fluid escape from the safety assembly.
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Abstract
A safety needle assembly of an infusion set for infusing fluids into a subcutaneously implanted access port is disclosed. The needle assembly is configured to prevent fluid/vapor escape therefrom so as to reduce or prevent fluid exposure to a clinician using the needle assembly. In one embodiment, the needle assembly comprises a handle portion including a needle extending therefrom, the needle defining a lumen for passage of a fluid therethrough. The needle assembly also includes a safety assembly defining a needle hole through which the needle initially extends. The safety assembly is selectively and axially slidable along the needle in order to shield a distal tip of the needle and prevent user contact therewith. A fluid isolation component is included in the safety assembly for isolating fluid escape from the needle to prevent exposure to a clinician.
262 Citations
19 Claims
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1. A needle assembly, comprising:
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a handle portion including a needle defining a lumen for passage of a fluid therethrough; a safety assembly selectively and axially slidable along the needle to shield a distal tip of the needle and prevent user contact therewith, the safety assembly including; a base including a needle hole; and a spring-based obstruction component biased to obstruct the needle hole after retraction of the needle distal tip into the base, the spring-based obstruction component including at least one shutter having a distal end designed to obstruct the needle hole, a proximal end coupled to the base, and a spring arm connecting the proximal end of the distal end; and a fluid isolation component designed to isolate fluid escape from the needle, the fluid isolation component including an absorbent pad disposed on the at least one shutter, the distal tip of the needle resting against the absorbent pad after retraction of the needle distal tip into the base, the absorbent pad isolating fluid leaked from the needle so as to prevent fluid escape from the safety assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A needle assembly, comprising:
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a handle portion including a needle defining a lumen for passage of a fluid therethrough; a safety assembly selectively and axially slidable along the needle to shield a distal tip of the needle and prevent user contact therewith, the safety assembly including; a base including a needle hole; and a spring-based obstruction component biased to obstruct the needle hole after retraction of the needle distal tip into the base, the spring-based obstruction component including at least one shutter having a distal end designed to obstruct the needle hole, a proximal end coupled to the base, and a spring arm connecting the proximal end of the distal end, the at least one shutter comprising a first shutter defining a first shutter hole, and a second shutter defining a second shutter hole, the needle extending through the first shutter hole, the second shutter hole, and the needle hole prior to retraction of the needle distal tip into the base; and a fluid isolation component designed to isolate fluid escape from the needle, the fluid isolation component including an oil film interposed between the first shutter and the second shutter to prevent escape of fluid from between the shutters.
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Specification