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Drug delivery device with feedback mechanism

A delivery device and drug technology, applied in the direction of drug devices, infusion sets, devices introduced into the body, etc., can solve the problems that patients do not have dexterity, cannot deliver doses, and push the plunger high

Active Publication Date: 2021-07-16
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a number of disadvantages associated with this approach
For example, if the plunger is released prematurely, the injection will stop and the intended dose will not be delivered
Also, the force required to push the plunger may be too high (for example, if the user is an elderly person or a child)
Also, aligning the injection device, administering the injection, and holding the device still during the injection may require dexterity, which some patients do not possess

Method used

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  • Drug delivery device with feedback mechanism
  • Drug delivery device with feedback mechanism
  • Drug delivery device with feedback mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] figure 1 is a perspective view of an exemplary embodiment of the autoinjector 1 . The autoinjector 1 comprises a housing 2 comprising a sleeve-shaped front housing 2.1 and a rear housing 2.2. A cap 11 is attached at the distal end of the housing 2 . A sleeve-shaped needle shield 7 is nested in the housing 2 . The housing 2 is adapted to accommodate a medicament container, such as a syringe 3, for example a glass syringe. The drug container 3 is hereinafter referred to as "syringe 3". The syringe 3 may be a prefilled syringe containing a medicament M and having a needle 4 provided at the distal end of the syringe 3 . In another exemplary embodiment, the medicament container 3 may be a cartridge comprising the medicament M and engaging (eg, by threading, snapping, friction, etc.) a removable needle. A protective needle sheath 5 is attached to the needle 4 when the autoinjector 1 or syringe 3 is assembled. The stopper 6 is provided for sealing the syringe 3 proximall...

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PUM

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Abstract

The invention relates to a drug delivery device (1) comprising: - a housing (2) adapted to accommodate a medicament container (3), - a plunger (10) arranged inside said housing (2) and capable of Sliding from a proximal position (P1) into a distal position (P2) for delivering medicament from said medicament container (3), - at least one feedback mechanism (13), operatively associated with said plunger (10) connected, the feedback mechanism (13) includes a cannula (14), a control spring (8) biasing the cannula (14) to the distal direction (D), a needle shield (7), and the needle shield The cover (7) is operable to abut axially against said sleeve (14) in a first coupled state and is prevented from contact with said sleeve (14) by said plunger (10) in its proximal position (P1). ) is axially disconnected, wherein said plunger (10) when approaching said distal position (P2) during movement from said proximal position (P1) towards said distal position (P2) Allows the needle shield (7) to disconnect from the cannula (14), thus allowing limited axial movement of the cannula (14) relative to the needle shield (7) until the cannula The tube (14) is in the second coupled state until it abuts axially against said needle shield (7).

Description

technical field [0001] The present invention relates to a drug delivery device. Background technique [0002] Administering an injection is a process that presents numerous mental and physical risks and challenges to both the user and the healthcare professional. Injection devices generally fall into two categories - manual devices and auto-injectors. In traditional manual devices, human power is required to drive the drug through the needle. This is usually done with a plunger that is pushed continuously during the injection. There are a number of disadvantages associated with this approach. For example, if the plunger is released prematurely, the injection will stop and the intended dose will not be delivered. Additionally, the force required to push the plunger may be too high (eg, if the user is an elderly person or a child). Also, aligning the injection device, administering the injection, and holding the injection device still during the injection may require dext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/20A61M5/315
CPCA61M5/2033A61M5/3157A61M2005/3267A61M2005/3247A61M2005/208A61M2205/582A61M2205/581A61M5/3245
Inventor T·M·开普H·勒弗拉特
Owner SANOFI AVENTIS DEUT GMBH