Injection molded cannula system
AssigneeRoche Diabetes Care, Inc.
InventorsChristian Freitag, Mads Bjoern Rasmussen
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Abstract
Disclosed herein is a cannula system including a soft cannula 10 and a cannula holder for holding the soft cannula. The cannula holder has a compressor and a body. The body contains a mounting structure and a cavity for holding a septum. The soft cannula is threaded on the mounting structure. Furthermore, the compressor circumferentially surrounds the mounting structure and at least parts of the body. The compressor provides an internal material tension for exerting a compression force on the soft cannula and the mounting structure.
Claims17
A method for manufacturing a cannula system, the method comprising:
- providing a body having a mounting structure, the body being mounted onto a molding core pin and wherein the body is provided by injection molding the body onto the molding core pin;
- positioning a soft cannula on the mounting structure;
- injection molding a compressor on the soft cannula and at least part of the body, wherein the compressor circumferentially surrounds the mounting structure, at least part of the soft cannula and the at least part of the body, wherein the compressor is complementary to and forms a tight connection with the at least part of the body where the compressor is molded on the body, and wherein the compressor and the body and the compressor and the soft cannula form bonded connections during injection molding of the compressor;
- actively cooling the compressor and thereby providing an internal material tension of the compressor;
- and
- removing the molding core pin.
Dependencies are inferred from the claim text.