Injection molded cannula system

1 . 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.

2 . The method according to claim 1 , wherein only a distal end area of the soft cannula is positioned on the mounting structure of the body.

3 . The method according to claim 2 , wherein the distal end area of the soft cannula is provided with a lock for establishing a form lock and/or an adhesive bond between the soft cannula and the compressor.

4 . The method according to claim 3 , wherein, prior to positioning the soft cannula on the mounting structure of the body, the lock is generated at the distal end area of the soft cannula.

5 . The method according to claim 3 , wherein the lock includes at least one protrusion.

6 . The method according to claim 5 , wherein the lock is selected from the group consisting of (i) a protruding collar arranged at the most distal part of the distal end area and (ii) a protrusion on the compressor extending through at least one hole in the soft cannula.

7 . The method according to claim 6 , wherein the lock includes the protrusion on the compressor extending through the at least one hole in the soft cannula to thereby improve a seal between the compressor and the soft cannula.

8 . The method according to claim 2 , wherein the distal end area of the soft cannula has a larger diameter than the rest of the cannula before the cannula is positioned on the mounting structure.

9 . The method according to claim 2 , wherein the compressor circumferentially surrounds only the distal end area of the soft cannula.

10 . The method according to claim 1 , wherein the internal material tension of the compressor exerts a radially inward compression force and/or wherein the internal material tension of the compressor compresses the soft cannula.

11 . The method according to claim 1 , wherein the distal end area of the soft cannula has a larger diameter than the rest of the soft cannula.

12 . The method according to claim 1 , wherein the compressor compresses at least the distal end area of the soft cannula and/or wherein the body and the compressor are connected by a bonded connection and/or wherein the soft cannula and the compressor are connected by a bonded connection.

13 . A method of using an infusion set, comprising:

providing a cannula system according to claim 1 ; and

using the cannula system in the infusion set.

14 . The method for manufacturing a cannula system according to claim 1 , wherein the body is provided by injection molding onto the molding core pin.

15 . The method for manufacturing a cannula system according to claim 1 , wherein the compressor shrinks from the active cooling of the compressor.

16 . The method for manufacturing a cannula system according to claim 1 , wherein the active cooling of the compressor includes using a cooling medium.

17 . The method for manufacturing a cannula system according to claim 16 , wherein the active cooling of the compressor is performed in a mold.