Patent ID: 8652387
Filing Date: 2014-02-18
Classification: A61M,B29C

Abstract:
1. A method of producing an administering device for infusing or injecting a liquid medicament, comprising: providing an injection mold which defines a first housing shell, wherein the first housing shell is configured to accommodate components which comprises a receiver for the liquid medicament, a conveying mechanism, and a control element, wherein the first housing shell defines a first opening, a second opening for the control element, a third opening through which the components are inserted in the first housing shell when the administering device is assembled, and a seal gap which extends around the third opening; providing to the injection mold, a pre-molded insert part which forms a transparent, watertight wall region made from a first plastic material; injecting into the injection mold a different, second plastic material so that the first plastic material and the second plastic material are joined to together along an edge of the first opening in a watertight fit by an injection mold formed seal, wherein the first opening is closed by the pre-molded insert part and the second plastic material forms side walls of the first housing shell; providing the components in the first housing shell through the third opening; injecting into the injection mold onto the second plastic material a different, third plastic material so that the third plastic material and the second plastic material are joined together along an edge of the second opening in a watertight fit by an injection mold formed seal, wherein the third plastic material forms a flexible, watertight wall region which closes the second opening and overlaps the control element; providing a dimensionally stable support structure having an anchoring element to the third opening of the first housing shell; and injection molding a thermoplastic elastomer over the dimensionally stable support structure to form a second housing shell which surrounds the anchoring element and into the seal gap of the first housing shell both to close the third opening and form a seal therebetween with a formed sealing lip such that the first housing shell and second housing shell are connected in a watertight fit.