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drug injection device

A technology for injection devices and medicines, applied in syringes, auto-injectors, ampoule syringes, etc., can solve problems such as dexterity, limited coordination, etc.

Active Publication Date: 2021-04-09
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This step can be problematic for patients with limited dexterity, poor coordination, or who have lost some degree of sensation in their hands

Method used

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Experimental program
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Embodiment Construction

[0024] Embodiments of the present disclosure provide a mechanism for inserting a needle of an injection device into a cartridge containing a drug, for injection by a patient or a caregiver. This mechanism allows the drug cartridge to remain sealed until the user wishes to initiate an injection. Automating the mechanism by which the needle is inserted into the drug cartridge also reduces the amount of manipulation of the needle by the user prior to injection. In fact, in some embodiments described below, the user does not touch the needle when it is inserted into the drug cartridge. For example, one mechanism described below for inserting a needle into a drug cartridge involves removing a blocking element, thereby releasing a compressed spring to urge the needle towards the drug cartridge.

[0025] The present disclosure describes mechanisms and methods for use with injection devices (eg, autoinjectors, pen injectors, manual injectors) in which a double ended needle can be att...

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PUM

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Abstract

A drug injection device, comprising: a body having a cartridge receiver configured to hold a drug cartridge; a needle holder that retains a needle; and a needle sleeve, the needle cover a cartridge at least partially surrounds the needle holder and needle and is axially movable relative to the body; a removable transverse blocking member retaining the cartridge receiver and the needle and a compression spring disposed between the needle holder and the distal end of the needle hub such that upon removal of the blocking member, the spring is released, causing the The needle hub moves axially towards the cartridge receiving portion.

Description

technical field [0001] The present invention relates to a drug injection device. Background technique [0002] Drug injection devices can take various forms. One form uses a syringe, in which the drug is stored in a hollow cylinder, usually formed of glass. The drug is sealed from the environment with a plunger movable within the barrel and a needle fluidly connected to the distal end of the syringe. The needle must remain capped to keep the drug sterile. [0003] Another form of injection device uses a cartridge instead of a syringe with a distal seal in place of the syringe's needle. Typically, the patient attaches a double-ended needle to the cartridge prior to injection, thereby piercing the seal of the cartridge with the proximal tip of the double-ended needle. [0004] While cartridges may offer handling and storage advantages over syringes, they are not without disadvantages. For example, additional steps are required to attach the needle to the cartridge. This ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/24A61M5/20A61M5/32
CPCA61M5/2033A61M5/2466A61M5/3202A61M2005/2013A61M2005/206A61M2005/2073A61M2005/2474A61M5/3204A61M5/3293
Inventor M·赫尔默
Owner SANOFI AVENTIS DEUT GMBH