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Injection device with retractable needle

A technology of an injection device and a storage device, applied in the field of needle assemblies, can solve the problems of being unsuitable for plugging, unsuitable for long-term storage, unsuitable for long-term storage of products, etc., and achieves the effect of easy manipulation

Active Publication Date: 2009-06-24
BECTON DICKINSON FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One drawback of existing syringes with retractable needles is that they are not suitable for long-term storage of the product and must be filled prior to injection
It is not suitable for long-term storage as there is a risk of drug leakage and loss due to drug penetration into the hub
Additionally, the stopper and plunger rod are co-injected, which makes it unsuitable for conventional stopping processes on automated filling lines

Method used

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  • Injection device with retractable needle
  • Injection device with retractable needle
  • Injection device with retractable needle

Examples

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Effect test

Embodiment Construction

[0080] see figure 1 , shows an injection device 100 according to the invention comprising a storage device 200 and a needle assembly 1 according to the invention. The storage device 200 comprises an approximately tubular syringe 8 . The barrel 8 may be made of a material selected from the group comprising polypropylene, polycycloolefin and / or combinations thereof. These materials are preferred since they are suitable for long-term storage of the product. Also, they are usually transparent, thus allowing a good visual assessment of the quantity and quality of the stored product.

[0081] The barrel 8 has a distal end 8a and a proximal end 8b and defines a chamber 9 for receiving the product 4 . Product 4 may be any product suitable for injection into a patient, such as a pharmaceutical. Preferably, the product 4 is stored in the storage device 200 before being injected.

[0082] figure 1 The injection device 100 also includes a piston 2, which is used to discharge the pro...

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Abstract

The present invention relates to a needle assembly (1) to be used in combination with a storing device (200) comprising a barrel (8) defining a chamber (9) receiving a product (4) and a piston (2), the assembly (1) comprising: needle-bearing portion (7) in a first material, movable between an exposed and a retracted positions of the needle (5), engaging means (8a, 10, 11, 18) for securing the needle-bearing portion (7) to the barrel (8) in the exposed position, characterized in that it comprises: sealing means (15) in a second material for tightly sealing the distal end (9a) of the chamber (9) to the needle-bearing portion (7), a breakable portion (7a) located between the engaging means (8a, 10, 11, 18) and the needle-bearing portion (7), which, when broken, allows independent proximal displacement of the needle-bearing portion (7) relative to the engaging means (8a, 10, 11, 18) between the exposed and the retracted positions, the first material being more rigid than the second material. The invention also relates to an injection device (100) comprising the needle assembly (1) and a storing device (200).

Description

technical field [0001] The present invention relates to a needle assembly for use in combination with a storage device, to an injection device, such as a syringe, especially a prefilled syringe, comprising said needle assembly and a storage device, wherein said needle is retractable after use Back to avoid inadvertent exposure. [0002] In this application, the distal end of a component or device is understood to mean the end furthest from the user's hand, and the proximal end is understood to mean the end closest to the user's hand. Likewise, in the present application, "distal direction" should be understood to mean the injection direction, and "proximal direction" should be understood to mean the opposite direction of the injection direction. Background technique [0003] Workers in the medical industry use syringes every day. Also, having the safest working conditions for these personnel is of paramount importance due to the dangers often associated with blood contact....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32
CPCA61M5/3234A61M5/508
Inventor B·巴内F·佩罗K·D·内尔
Owner BECTON DICKINSON FRANCE
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