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Autoinjectors triggered by skin contact

A technology for automatic injectors and pharmaceutical containers, applied in the directions of automatic injectors, hypodermic injection devices, syringes, etc., can solve the problems of inability to deliver doses, lack of agility, and large push buttons/plungers

Active Publication Date: 2020-01-17
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are several disadvantages associated with this method
For example, if the button / plunger is released prematurely, the injection will stop and the intended dose may not be delivered
Also, the force required to push the button / plunger may be too great (e.g. if the user is an elderly person or a child)
Also, aligning the drug delivery device, performing the injection, and still holding the drug delivery device during the injection may require dexterity that some patients (e.g., elderly patients, children, arthritic patients, etc.) may not possess

Method used

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  • Autoinjectors triggered by skin contact
  • Autoinjectors triggered by skin contact
  • Autoinjectors triggered by skin contact

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0077] Figure 1A is a longitudinal section of an exemplary embodiment of an autoinjector 1 according to the invention during assembly. The autoinjector 1 comprises a housing 2 comprising a front housing 2.1 and a rear housing 2.2. The housing 2 is adapted to hold a medicament container, such as a syringe 3 . The syringe 3 may be a prefilled syringe and have a needle 4 arranged at the distal end. A protective needle sheath 5 may be removably coupled to the needle 4 when the autoinjector 1 and / or the syringe 3 are assembled. The protective needle sheath 5 can be a rubber needle sheath or a rigid needle sheath (which consists of rubber and a whole or partial plastic shell). The stopper 6 is arranged to seal the syringe 3 proximally and to expel the medicament M contained in the syringe 3 through the needle 4 . In other exemplary embodiments, the medicament container may be a cartridge containing the medicament M and engaging the removable needle (eg, by threading, snapping, f...

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PUM

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Abstract

The invention relates to an autoinjector (1) comprising: a housing (2) adapted to hold a medicament container with a needle (4); a needle shield (7) , the needle shield (7) is telescopically coupled to the housing (2) and is movable in a first extended position (FEP) relative to the housing (2) and relative to the housing ( 2) between the retracted position (RP) in which the needle (4) is covered in the first extended position (FEP) in which the needle ( 4) exposure; and a plunger (10) rotatably and slidably arranged in said housing (2), said plunger (10) relative to said housing (2) ) is rotatable between a first rotational position in which the plunger (10) is engaged to the housing (2) and a second rotational position in which , the plunger (10) disengages from the housing (2), wherein when the needle shield (7) translates from the first extended position (FEP) to the retracted position (RP) , the shield (7) engages the plunger (10) to rotate the plunger (10) from the first rotational position to the second rotational position, the autoinjector (1) further comprising : A cover (11) removably coupled to the housing (2), wherein said cover (11) comprises at least one flexible housing beam (11.6), said at least one flexible housing beam (11.6) being adapted to At least one aperture (2.16) in said housing (2) is releasably engaged.

Description

technical field [0001] The present invention relates to an automatic injector. Background technique [0002] Administering an injection is a process that presents various risks and challenges, both mental and physical, to the user and the health care professional. Medication delivery devices generally fall into two categories - manual devices and auto-injectors. In traditional manual devices, manual force is required to drive the drug through the needle. This is accomplished with some form of button / plunger that must be continuously squeezed during injection. There are several disadvantages associated with this approach. For example, if the button / plunger is released prematurely, the injection will stop and the intended dose may not be delivered. Also, the force required to push the button / plunger may be too great (eg, if the user is an elderly person or a child). Also, aligning the drug delivery device, performing the injection, and still holding the drug delivery devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/20A61M5/32
CPCA61M5/2033A61M5/3204A61M2005/2013A61M2005/2073A61M2205/582A61M2205/583
Inventor C·莫泽巴赫T·坎普
Owner SANOFI AVENTIS DEUT GMBH