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Dose setting mechanism

A dose setting and dose limiting technology, applied in the direction of infusion sets, syringes, hypodermic injection equipment, etc., can solve limitations and other problems

Active Publication Date: 2012-04-11
SHL MEDICAL AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first case, it may be limited to doses that can in principle be set within one turn of the dose knob

Method used

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Examples

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Embodiment Construction

[0021] In this application, when the term "distal end / end" is used, it is meant the part / end of a drug delivery device or a component thereof which is positioned furthest away from the delivery location of the patient when the drug delivery device is in use. Accordingly, when the term "proximal portion / proximal end" is used, it is meant that part / end of the drug delivery device or a component thereof which is positioned closest to the delivery site of the patient in the case of use of the drug delivery device.

[0022] The dose setting mechanism according to the present invention shown in the accompanying drawings comprises:

[0023] - an elongated tubular distal housing 16 with opposite distal and proximal ends, wherein said distal housing comprises threads 14 on its inner surface, a first window 30, a second window 32 and a at least one opening 38 in the elongate surface;

[0024] - a tubular dose limiting member 10 having opposite distal and proximal ends, wherein said dos...

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Abstract

The present invention relates to a dose setting mechanism intended to be used in a medicament delivery device, comprising an elongated tubular distal housing (16) having opposite distal and proximal ends, wherein said distal housing comprises threads (14) on its inner surface, a first window (30), a second window (32), and at least one opening (38) on its elongated surface; a tubular dose limiting member (10) having opposite distal and proximal ends, wherein said dose limiting member comprises a first thread segment (12) on its outer circumference surface at its proximal end intended to cooperate with corresponding threads on the inner surface of the distal housing, first indicia (18) on its outer circumferential surface, a stop surface (42) at its proximal end, and a number of protrusions (20) arranged equidistant to each other along the circumference on the outer surface at its distal end; a tubular dose setting member (22) having opposite distal and proximal ends, wherein said distal housing is coaxially arranged inside the dose limiting member and comprises a second thread segment (24) having and end surface (44) on its outer circumferential surface at its proximal end intended to cooperate with the threads of the distal housing, second indicia (26) on its outer circumferential, and a dose setting knob (28) protruding through the distal end of the distal housing; and a removable lock member (36) attached to the distal housing, wherein said lock member comprises at least one elongated rib (40) on its inner circumferential surface which is intended to interact with the protrusions of the dose limiting member for locking the dose limiting member in a certain position when the lock member is attached to the distal housing.

Description

technical field [0001] The present invention relates to a dose setting mechanism for a medicament delivery device. Background technique [0002] There are many devices for drug delivery that have been developed for self-use, ie a patient or other non-medically trained person handles the device during drug delivery. Such devices include inhalers, nebulizers and syringes. For many treatments, such as asthma, diabetes, hormone growth, the patient must receive regular doses, and the advantage of using this device is that the patient can get the medicine anywhere and does not have to visit a healthcare facility to receive the medicine. [0003] Self-administration devices need to be both reliable and easy to use for untrained users. It is therefore necessary to minimize the risk of mishandling the device so that the user does not receive the wrong dose size. [0004] Many devices are capable of setting a certain dose size, which depends on the actual patient and treatment, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/315
CPCA61M5/31525A61M5/31561A61M2005/3126A61M5/31585A61M2005/3125A61M5/31551A61M2005/3154
Inventor A.威塞尔布拉德
Owner SHL MEDICAL AG
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