Connecting element comprising a first body and a method for injection moulding a connecting element

• US 20040155457A1
• Filed: 05/13/2003
• Published: 08/12/2004
• Est. Priority Date: 02/12/2003
• Status: Abandoned Application

• Current Assignee: Maersk Medical AS
• Original Assignee: Maersk Medical AS
• Inventors: Mejlhede, Signe Thorning, Kornerup, Grete
• Application Number:
  US10/437,488
• Publication Number:
  US 20040155457A1
• Time in Patent Office: Days
• US Class Current: 285/21.1
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/16 Making multilayered or multicoloured articles B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816
• CPC Class Codes: B29C 45/1657 using means for adhering or bonding the layers or parts to each other mechanical anchoring B29C37/0082
• CPC Class Codes: F16L 47/00 Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics connections for hoses of plastics F16L33/006

Abstract

The invention relates to a connecting element (1) comprising a first body with a through-going axial opening (3) situated in the first body (2) for liquid communication between the first end portion (4) of the first body (2) and the second end portion (5) of the first body (2), said first end portion (4) comprising a cavity (6), and wherein the cavity (6) comprises a female part (9) with a through-going opening (10) and manufactured from a first plastics material and comprising an inner area (35) for mounting of a tube (24) by means of first attachment means (8); and wherein the first body is manufactured from a second plastics material different firm the first plastics material. Hereby a connecting element is obtained that is not associated with the prior art connecting elements; and wherein it is possible to wipe the connecting element as such with eg ethyl alcohol prior to use, and to use a plastics material, in which stresses are not released during this wiping, while simultaneously it is possible to use a soft glue between the connecting element and the plastics tube, such that leaks do not occur in this are during the physical influencing of the element.

Claims

1. A connecting element (1) comprising a first body with a through-going opening (3) situated axially in the first body (2) for liquid communication between the first end portion (4) of the first body (2) and the second end portion (5) of the first body (2), said first end portion (4) comprising a cavity (6), characterised in that the cavity (6) comprises a female part (9) with a through-going opening (10) and manufactured from a first plastics material and comprising an inner area (35) for mounting of a tube (24);

and that the first body is manufactured from a second plastics material different from the first plastics material.

2. A connecting element (1) according to claim 1, characterised in that the first as well as the second plastics material is a thermoplastics.

3. A connecting element (1) according to claim 2, characterised in that the first plastics material is an amorphous plastics material.

4. A connecting element (1) according to claim 3, characterised in that the first plastics material is an ABS material.

5. A connecting element (1) according to claim 2, characterised in that the second plastics material is an at least partially crystalline plastics material.

6. A connecting element (1) according to claim 5, characterised in that the second plastics material is a polypropylene.

7. A connecting element (1) according to claim 1, characterised in that the outer walls (14) of the female part (9) are enclosed by the first body (2) and comprises retention devices (15).

8. A connecting element (1) according to claim 7, characterised in that the female part (9) is an essentially rotationally symmetrical body with a rotationally symmetrical through-going opening (3) and an upper delimiting face (17) and a lower delimiting face (18), which upper delimiting face (17) is situated at a first distance (19) from the delimiting face (20) of the first end part (4).

9. A connecting element (1) according to claim 1, characterised in that the tube is mounted by means of first attachment means (8) in the interior area and preferably with a glue.

11. An infusion device comprising a connecting element (1) according to claim 1, the second end part (5) of the connecting element (1) being connected to an insulin pump, and said first end portion (4) being connected to a plastics tube (7).

10. A connecting element (1), characterised in that the second end portion (5) comprises a luer lock (21).

12. A method of injection moulding a connecting element (1) in an injection moulding mould, said connecting element (1) comprising a first body (2) with a through-going axial opening (3) situated in the first body for liquid communication between the first end portion (4) of the first body (2) and the second end portion (5) of the first body (2), characterised in that a first plastics material is injected into the mould for providing a female part (9) with a through-going opening (10), and a second plastics material is subsequently injected into the mould for providing the first body (2), said first body (2) enclosing at least a portion of the outer faces (14) of the female part;

and said first body (2) comprising a through-going opening (3), whose central axis is axially coinciding with the central axis of the female part.

13. A method according to claim 12, characterised in that both plastics materials are thermoplastics materials.

14. A method according to claim 12, characterised in that the injected first plastics material comprises an amorphous plastics material, eg an ABS material.

15. A method according to claim 12, characterised in that the second plastics material is an at least partially crystalline plastics material, eg a polypropylene.