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Needle component for prefilling syringe

A pre-filled syringe, syringe technology, applied in the directions of syringes, hypodermic instruments, needles, etc., can solve the problem of inability to ensure microbial sealing or aseptic sealing, and achieve the effect of simplifying production and parts assembly

Active Publication Date: 2008-10-01
CILAG GMBH INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reference is made to the connection of the housing and the needle hub by means of axially staggered ribs which, while enabling a specific fixed position of the housing, do not ensure the necessary microbiological or sterile sealing

Method used

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  • Needle component for prefilling syringe
  • Needle component for prefilling syringe
  • Needle component for prefilling syringe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Now refer to figure 1 , shows a needle assembly for a prefilled syringe (not shown) made of glass or plastic, the inside of which is siliconized and extinguished by baking in a heating tunnel at temperatures up to 350°C. bacteria to form a coating. The needle assembly 10 includes a needle hub 12 , a needle 14 fixed on the needle hub 12 , a needle shield 16 , a needle seal 18 and a closure 20 .

[0035] In detail, the needle hub 12 is conical, characterized in that the tapered opening 22 at its distal end is provided with an annular groove 24, and the needle hub 12 can be fitted to the molded body by means of the annular edge of a prefilled syringe (not shown as it is well known). barrel and is secured to it by a snap-action connection. The conical opening 22 transforms at its proximal end into a cylindrical bore 26 into which the needle 14 is fixed coaxially by means of an adhesive 28 via its distal end. Useful adhesives are non-toxic acrylic resin-based adhesives su...

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PUM

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Abstract

A needle assembly (10; 210) for a prefilled injection syringe is described. A needle holder (12; 212) has a needle (14; 214) secured to it and is adapted to be secured to a syringe barrel of the injection syringe. A needle sheath (16; 216) has a distal end forming a releasable sterile seal with the needle holder (12; 212), and surrounds and shields the needle (14; 214) . A needle seal (18; 218) surmounts the needle tip and is arranged at least in part in the proximal end of the needle sheath (16; 216) and closed off by a closure element (20; 220) . A closure connection between the closure element (20; 220) and the needle sheath (16; 216) is configured as a non-releasable and sterile barrier (54; 254) produced by means of bonding or welding.

Description

technical field [0001] The present invention relates to a needle assembly for a prefilled syringe, especially but not limited to the type of prefilled syringe whose interior is coated by baking siliconizing and sterilizing in a heating tube at a temperature up to 350°C, The needle assembly includes: a needle hub, a needle shield and a needle seal on which the needle is fixed, the needle hub can be fixed on the syringe barrel, and the distal end of the needle shield is reliably sterile sealed The needle hub is detachably connected to the needle hub and shieldingly surrounds the needle, the needle seal is used to mount the needle tip and is at least partially disposed in the proximal end of the needle shield closed by the closure. Background technique [0002] Systems of this type are known and disclosed inter alia in the patent literature. Nevertheless, many of these known systems are disadvantageous or overly complex in production and / or application. [0003] Thus, in WO94...

Claims

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Application Information

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IPC IPC(8): A61M5/32
CPCA61M5/3202A61M5/34A61M2005/3109Y10T29/49826Y10T29/49904A61M5/32A61M5/31A61M5/178
Inventor A·费边S·拜耶勒A·埃贝勒J·科瓦克
Owner CILAG GMBH INT