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dose setting mechanism

A dose setting, dose technology, used in hypodermic devices, etc., to solve problems such as dangerous mixing

Inactive Publication Date: 2016-01-20
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most dangerous mix-up can occur if a patient mistakenly delivers 50 units of rapid-acting insulin instead of long-acting insulin

Method used

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Embodiment Construction

[0052] see Figure 1A, shows a drug delivery device 100 according to an exemplary pen-shaped design. The drug delivery device 100 comprises a housing with a first cartridge holder 102 and a dose setting mechanism 104 . The drug delivery device may be a resettable drug delivery device (ie a reusable device) or a non-resettable drug delivery device (ie a non-reusable device). The first end of the cartridge holder 102 and the second end of the dose setting mechanism 104 are secured together by a connecting feature. For non-resettable devices, these connection features will be permanent and irreversible. For resettable devices, these connection features will be releasable.

[0053] In the illustrated configuration, the cartridge holder 102 is secured within the second end of the dose setting mechanism 104 . A removable cap (not shown) is releasably retained on the second or distal end of the cartridge holder or cartridge housing. The dose setting mechanism 104 includes a dose ...

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Abstract

A system for preventing delivery of less than a predetermined minimum dose of a medicament by providing a dose setting mechanism (104) having a clutch ring (130; 200) for selecting a dose less than the minimum allowable dose is rotationally fixed relative to the housing (120). The dose setting mechanism further comprises a drug delivery device housing (120) and a dose scale member (122; 202) disposed in the housing and rotatable during a dose setting step. A drive sleeve (124; 206) is placed within the dose scale member, a spindle (126) is placed within the drive sleeve, and a clutch (128; 212) is placed between the dose scale member and the drive between the sleeves. When the dose scale member is rotated to select a dose smaller than the minimum dose, a clutch ring (130; 200) prevents the drive sleeve from rotating, thereby preventing the selected dose from being administered.

Description

technical field [0001] This patent application is mainly directed to a dose setting mechanism for controlling the minimum and / or maximum possible dose setting of a drug delivery device. In particular, this patent application is primarily directed to drug delivery devices, such as pen-type drug delivery devices, where therapy requires the patient to receive at least a certain minimum dose and not exceed a certain maximum dose of a particular medicament. Such devices provide for self-administration of drug from a multi-dose cartridge and contain dose limiting mechanisms for setting minimum and / or maximum doses. The present application may find application in disposable and reusable drug delivery devices. However, aspects of the invention are equally applicable to other situations as well. Background technique [0002] Typically, self-administered injectable medicaments are delivered using variable dose injection devices. Such a device is known from WO2004 / 078239A1. Prior t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/315
CPCA61M5/31525A61M5/31535A61M5/31541A61M5/31551A61M5/31571A61M5/3158A61M5/31593A61M5/31536
Inventor J.巴特勒D.普伦普特里
Owner SANOFI AVENTIS DEUT GMBH
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