US 11,684,711 B2
Housing for a cartridge for distribution and administration of drugs by means of portable infusion pumps
Claudio Cane′, Rivoli (IT); Mario Cane′, Rivoli (IT); and Paolo Cane′, Rivoli (IT)
Assigned to CANE' S.P.A., Rivoli (IT)
Appl. No. 16/468,786
Filed by CANE′ S.P.A., Rivoli (IT)
PCT Filed Dec. 13, 2017, PCT No. PCT/IB2017/057899
§ 371(c)(1), (2) Date Jun. 12, 2019,
PCT Pub. No. WO2018/109689, PCT Pub. Date Jun. 21, 2018.
Claims priority of application No. 16203893 (EP), filed on Dec. 13, 2016.
Prior Publication US 2020/0016328 A1, Jan. 16, 2020
Int. Cl. A61M 5/142 (2006.01); A61M 5/145 (2006.01)
CPC A61M 5/14244 (2013.01) [A61M 5/1452 (2013.01); A61M 5/14212 (2013.01); A61M 2005/14208 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cartridge (120; 220) for an infusion pump (10) for controlled administration of drugs to a human or animal body, comprising:
a housing (130; 230) and a glass vessel (50) of cylindrical shape, said glass vessel (50) having a cylindrical portion with an open proximal end (50a) closed by a slidable piston (51) and a distal end (50b) having an opening closed by a pierceable membrane (53) and provided with a neck, said housing (130; 230) enclosing said glass vessel (50),
wherein said housing (130; 230) is made of plastic material and has an open proximal end (131; 231) and an open distal end (132; 232) adapted to receive the proximal end (50a) of the vessel (50) and the distal end (50b) of the vessel (50), respectively,
wherein the open proximal end (131; 231) of the housing (130; 230) is provided with a pair of bayonet fitting formations (121; 221) integrally formed on the housing (130; 230) for fastening the cartridge (120, 220) to an infusion pump (10),
wherein the housing (130; 230) includes a cylindrical base part (133; 233), which is provided with an inner flange (138; 238) for abutment of the vessel (50) and on which the fitting formations (121; 221) are formed, and a neck part (135; 235) that can be fastened to the base part (133; 233) by snap fitting formations (136, 137; 236, 237) for retaining the glass vessel (50) between the base part (133; 233) and the neck part (135; 235) of the housing (130; 230),
wherein the inner flange (138; 238) provided for abutment of the vessel (50) inside the cylindrical base part (133; 233) surrounds an opening having a smaller diameter than an internal cavity of the neck part (135; 235);
wherein the snap fitting formations (136, 137; 236, 237) are configured so as to make separation of the neck part (135; 235) from the base part (133; 233) difficult or substantially impossible, whereby the glass vessel (50) and the housing (130; 230) form a disposable assembly,
wherein positions of the snap fitting formations (136, 137, 236, 237) on the housing (130; 230) are angularly aligned with positions of said bayonet fitting formations (121; 221) on the base part (133; 233),
wherein the snap fitting formations (136; 236) include a pair of diametrically-opposed, axially-extending tabs (136a; 236a) on the base part (133; 233) on which a pair of inwardly-extending diametrically opposite teeth (136; 236) are located, and wherein the snap filling formations (137; 237) include a pair of diametrically opposite inwardly-extending recessed seats (137; 237) formed within a sidewall of said neck part (135; 235),
wherein the neck part (135; 235) is sized in length so as to enclose a whole of the cylindrical portion of the vessel (50), and
wherein retention of the vessel (50) within the housing (130; 230) is ensured by the distal end (132; 232) of the housing (130; 230) provided by the neck part (135, 235) having a tapered inner wall (132a; 232a) forming an abutment surface for an upper tapered portion of the vessel (50) extending between the cylindrical portion and the neck of the vessel (50), thereby urging the vessel (50) against the inner flange (138; 238) of the base part (133; 233) of the housing (130; 230).
 
8. A cartridge (220) for an infusion pump (10) for controlled administration of drugs to a human or animal body, comprising:
a housing (230) and a glass vessel (50) of cylindrical shape, said glass vessel (50) having a cylindrical portion with an open proximal end (50a) closed by a slidable piston (51) and a distal end (50b) having an opening closed by a pierceable membrane (53) and provided with a neck, said housing (230) enclosing said glass vessel (50);
wherein said housing (230) is made of plastic material and has an open proximal end (231) and an open distal end (232) adapted to receive the proximal end (50a) of the vessel (50) and the distal end (50b) of the vessel (50), respectively;
wherein the open proximal end (231) of the housing (230) is provided with a pair of bayonet fitting formations (221) integrally formed on the housing (230) for fastening the cartridge (220) to an infusion pump (10);
wherein the housing (230) includes a cylindrical base part (233), which is provided with an inner flange (238) for abutment of the vessel (50) and on which the fitting formations (221) are formed, and a neck part (235) that can be fastened to the base part (233) by snap fitting formations (236, 237) for retaining the glass vessel (50) between the base part (233) and the neck part (235) of the housing (230);
wherein the inner flange (238) provided for abutment of the vessel (50) inside the cylindrical base part (233) surrounds an opening having a smaller diameter than an internal cavity of the neck part (235);
wherein the snap fitting formations (236, 237) are configured so as to make separation of the neck part (235) from the base part (233) difficult or substantially impossible, whereby the glass vessel (50) and the housing (230) form a disposable assembly;
wherein positions of the snap fitting formations (236, 237) on the housing (230) are angularly aligned with positions of said bayonet fitting formations (221) on the base part (233),
wherein the snap fitting formations (136; 236) include a pair of diametrically-opposed, axially-extending tabs (136a; 236a) on the base part (133; 233) on which a pair of inwardly-extending diametrically opposite teeth (136; 236) are located, and wherein the snap filling formations (137; 237) include a pair of diametrically opposite inwardly-extending recessed seats (137; 237) formed within a sidewall of said neck part (135; 235),
wherein the neck part (235) is sized in length so as to enclose a whole of the cylindrical portion of the vessel (50); and
wherein the vessel (50) is retained in correspondence of the base part (233) via mutual engagement between an annular projection (50c) provided at a base of the vessel (50) and a corresponding annular seat (233a) provided in the base part (233) of the housing (230).