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wheel-operated drug delivery device

A technology for equipment and drugs, applied in the directions of drug devices, hypodermic injection devices, infusion sets, etc., can solve the problems of uneven piston movement, unevenness, and difficult operation of double-drive wheel arrangement, and achieve the effect of reducing risks.

Inactive Publication Date: 2016-02-03
NOVO NORDISK HEALTH CARE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A common defect with single and dual chamber syringes is: Uneven or uneven piston movement due to stick-slip effects / actions caused by the interaction between the piston material and the reservoir wall
However, due to the distance between the contacting surfaces, the dual drive wheel arrangement may be difficult to operate properly

Method used

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Examples

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Embodiment Construction

[0079] When relative expressions such as "clockwise" and "counterclockwise" and "right" and "left" are used hereinafter, these relative expressions refer to the drawings and not necessarily to actual usage situations. The illustrated figures are schematic representations, for which the configuration / configuration of the different structures and their relative dimensions are intended for illustrative purposes only.

[0080] An exemplary drug delivery device employing the principles of the present invention includes a reservoir having a piston movable along a general axis; Rotate about an axis perpendicular to the general axis.

[0081] With such a device, the user has better control over the force distribution applied to the piston than the user of conventional prior art devices. Furthermore, the rotatable actuation element arranged in accordance with embodiments of the present invention requires repeated operational movements in order to cause the piston to move over a fracti...

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Abstract

The present invention provides a drug delivery device (1) for mixing substances and delivering a final drug product, the device comprising a container having compartments for separately storing substances and means for allowing mixing of the substances. A piston is disposed in the container and is adapted to be moved by a piston driver operatively coupled to a user steerable wheel (106).

Description

technical field [0001] The present invention relates generally to drug delivery devices, and in particular to such devices capable of mixing separately stored substances prior to administration to a subject. Background technique [0002] Pre-filled syringes that contain a specific volume of medicament when originally supplied by the manufacturer are well known in the art of medical devices. Such a syringe may for example comprise a reservoir tube provided at one end with a needle hub and at the other end with a plunger. For transport and storage reasons, the hub ends are usually closed, for example by a tip cap or a pierceable rubber septum. In use, the operator mounts the injection needle at the end of the needle hub (thus possibly penetrating the rubber septum), inserts the needle at the desired injection site, and slowly depresses the plunger through the needle using the attached plunger rod. The syringe is emptied, or partially emptied, through the tubing. [0003] Ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/24A61M5/315
CPCA61M5/3148A61M5/31515A61M5/31586A61M2005/2411A61M2005/31506A61M2005/31518A61M2005/3152A61M2205/586A61M5/2448
Inventor C.达姆加尔德 - 索伦森L.伊勒特森S.K.汉森
Owner NOVO NORDISK HEALTH CARE AG
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