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Safety adapter for needle hub assembly

A technology of needle assembly and needle hub, which is applied in the direction of hypodermic injection equipment, etc., and can solve the problem that the needle protection shell cannot be rotated

Inactive Publication Date: 2007-09-05
SMITHS MEDICAL ASD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The needle protection housing of the adapter of the ’842 patent cannot be rotated

Method used

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  • Safety adapter for needle hub assembly
  • Safety adapter for needle hub assembly

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Experimental program
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Embodiment Construction

[0010] As shown in FIG. 1 , the sleeve assembly of the present invention includes a sleeve 2 having a proximal end 4 and a distal end 6 . The distal portion has a recess 8 bounded by two protruding ends 10 and 12 . The sleeve is cylindrical and has a perforation indicated by directional arrow 14 . At the junction of the proximal part 4 and the distal part 6 there is an inner circumferential shoulder 16 against which the bottom 18 of a needle sheath or cap 20 abuts when inserted into the opening indicated by the directional arrow 14 . The proximal portion 4 includes a first inner diameter 18 indicated by dashed lines and a proximal opening 20 protruding from the junction of the proximal portion 4 and the distal portion 6 . The inner diameter 22 of the distal part 6 is larger than the inner diameter 18 of the proximal part 4 . On the bottom of the proximal part 4 there is an ear or flange 24 . These flanges may overlie the flanges or ears 26 of the needle hub 28 of the needle...

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PUM

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Abstract

To retrofit a conventional needle hub assembly with a needle protection housing (36), a sleeve (2) having a collar (30) rotatably fitted thereabout is fitted to the needle hub (28). The sleeve (2) has a proximal portion and a distal portion. The proximal portion has a diameter that is dimensioned to fit over the needle hub (28) while the distal portion has a diameter that allows the needle cap (20) of the needle hub assembly to be inserted thereinto so as to be frictionally coupled to the needle hub (28). There are a plurality of flanges or ears extending at the proximal end of the proximal portion. These flanges are configured to overlie the flanges formed at the base of the needle hub (28) used to mate with the luer (66) of a syringe (64). When the needle hub assembly is threadingly mated to the luer (66) of the syringe (64), the sleeve (2), along with the collar (30) mounted thereabout and to which the needle protection housing (36) is attached, is also mated to the luer (66). As a consequence, a conventional needle hub assembly could be retrofitted with the inventive sleeve assembly without causing any dead space which may unnecessarily waste to be dispensed medicament and / or collected patient fluid.

Description

technical field [0001] The present invention relates to a needle protector and more particularly to an adapter which fits over a conventional needle hub assembly so that the assembly can be retrofitted with a needle protector or has a needle protector added thereto when used with a syringe device. Background technique [0002] Use a needle guard to prevent exposure of a contaminated needle. US Patent 4,982,842 discloses an adapter for mating a needle hub assembly and a syringe. A needle guard housing is hinged to the adapter so that the housing can pivot to cover the needle protruding from the hub in use. The needle guard housing of the adapter of the '842 patent cannot be rotated. US Patent 5,277,311 discloses a housing mounted on a ring that fits over the neck of a Vacutainer frame so that the housing can rotate relative to a double-ended needle mounted on the Vacutainer frame . US Patent No. 5,681,295 discloses a needle hub that is specifical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/00
CPCA61M5/3202A61M5/3216
Inventor L·P·哈顿
Owner SMITHS MEDICAL ASD INC