Drug guide assembly for drug delivery device

Abstract

The present invention relates to a method of manufacturing a fluid directing assembly for a drug delivery device and a corresponding fluid directing assembly. The method comprises the steps of: providing a first member (12) having at least one recess (16, 18) in a first surface portion (22); The protruding bonding part (26) of the surface portion (22) at least partially fills the recesses (16, 18); the second member (20) having the second surface portion (24) is arranged adjacent to the first member (12), so that Its first and second surface portions (22, 24) are directed toward each other to form an interface region (15) between the first and second members (12, 20), wherein the joining member includes a connection with the first and / or second member ( 12, 20) of different materials, at least one channel structure (13) extending along the interface region (15) is formed by at least one deepening (14) of the first component (12) and / or of the second component (20) forming, selectively providing thermal energy to the joining member (26) to join the first and second members (12, 20) together.

Description

technical field [0001] The present invention relates to a fluid guide assembly for a drug delivery device providing at least one fluid channel adapted to guide a fluid, such as a medicament. The invention additionally relates to a method for the production of such a fluid guide assembly. Background technique [0002] Drug delivery devices for setting and dispensing single or multiple doses of liquid medicaments are well known in the art. In general, such devices have a generally similar purpose to that of an ordinary syringe. [0003] Drug delivery devices, in particular pen injectors, must meet several user-specific requirements. For example, with a chronic disease that afflicts the patient, like diabetes, the patient may be debilitated or may also have impaired vision. Suitable drug delivery devices, especially designed for home administration, therefore need to be reliable in construction and should be easy to use. Furthermore, the operation of the device and its comp...

AI Technical Summary

Problems solved by technology

However, this would otherwise degrade the purity of the plastic material, and the pre-specified and required properties of chemical inertness would no longer be fulfilled

[0010] In addition, when the member and the cover are joined together by means of adhesive, a portion of the adhesive may invade the channel structure, thereby increasing the risk of contamination of the medicament flowing therethrough

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