Drug guide assembly for drug delivery device
A technology for delivery devices and guide components, which is applied in the field of manufacturing fluid guide components, and can solve the problems of plastic material purity degradation and increased risk of drug contamination
Inactive Publication Date: 2017-05-03
SANOFI AVENTIS DEUT GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, this would otherwise degrade the purity of the plastic material and the predetermined and required chemical inertness properties would no longer be met
[0010] In addition, when the member and the cover are joined together by means of an adhesive, a portion of the adhesive can invade the channel structure, thereby increasing the risk of contamination of the medicament flowing therethrough
Method used
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[0120] Figures 1 to 3 The series of figures of FIG. 10 show the sequential manufacturing steps of the fluid directing assembly 10 configured with the miniature flow-through channel structures 12 , 14 . The diameter of the fluid channels 12, 14 may range between 0.01mm and 10mm. The diameter may in particular be between 0.1 mm and 1 mm, for example it is about 0.3 mm. The ratio of length to diameter of the fluid channel may be between 10:1 and 1000:1. In particular, the length:diameter ratio may be between 20:1 and 100:1. In this case, the length of the fluid channel may correspond to the longest fluid communication path of the fluid channel of the fluid guide assembly 10 .
[0121] Such as image 3 Assembly of the illustrated fluid guide assembly 10 can be obtained from as figure 1 The first member 16 is shown starting. The first component 16 may be manufactured or formed from a thermoplastic, preferably FDA-compliant or biocompatible plastic material. Such as figure ...
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Abstract
The invention relates to a fluid directing assembly for a drug delivery device comprising: a first member (16); a cover (18) arranged adjacent to said first member (16) and with said The surface portion (27) of the first member (16) is in non-joint surface contact, thereby forming an interface region (15); at least one channel structure (12, 14), said at least one channel structure along the first member ( 16) and said interface region (15) of the cover (18) extends and is formed by at least one recess in said first member (16) and / or in said cover (18); and a second Two members (20), the second member being in contact with the cover portion (18) and joined to the first member (16) via injection molding to position the cover portion (18) relative to the The first member (16) is fixed.
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 drain a fluid guide, 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 drugs 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...
Claims
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IPC IPC(8): A61M5/24B29C45/00B29C65/02A61M5/14B81C1/00
CPCA61M5/141A61M5/24B29C45/1671A61M5/19A61M5/20A61M2005/1787A61M2207/00A61M5/31
Inventor M.霍尔特维克M.豪普特
Owner SANOFI AVENTIS DEUT GMBH