Drive mechanism for injection device

A technology of driving mechanism and injection device, which is applied in the directions of syringes, auto-injectors, ampoule syringes, etc., to achieve the effect of improving convenience and improving interaction
CN1248746CInactive Publication Date: 2006-04-05SANOFI AVENTIS DEUTSCHLAND GMBH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SANOFI AVENTIS DEUTSCHLAND GMBH
Publication Date
2006-04-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

An injection device having a drive mechanism 42 to expel selectively a dose of medicament from a medicament cartridge 40 through a needle unit 22 is disclosed. The injection device further comprises an electronic control unit to control the drive mechanism 42, and a dispense button 18 to generate a dispense button signal to the electronic control unit indicative of the dose to be expelled in which an arm button 16 causes a first arm button signal to be sent to the electronic control unit to permit the dose to be expelled.
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Description

technical field

[0001] The present invention relates to improvements in injection devices, and more particularly to improvements in injection devices for dispensing controlled quantities of medicaments. Background technique

[0002] Typically, such injection devices are used by people suffering from diabetes in order to administer themselves a dose of insulin or insulin-type medication. It should also be appreciated that such an injection device is also suitable for injecting other medicaments.

[0003] Previously, the medicament was administered through the use of a disposable syringe that was first filled with the medicament from a separate vial or other container and then used to inject the medicament. However, there are several problems with such devices. In particular, the device is not suitable for the infirm. Additionally, public use of these syringes is problematic due to their social stigma.

[0004] In order to overcome these difficulties, various so-called pen...

Claims

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