Apparatus and method for cardioplegia delivery

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/14 (2006.01) A61M 1/16 (2006.01) A61M 1/34 (2006.01) A61M 37/00 (2006.01) B01D 63/02 (2006.01) A61M 1/36 (2006.01)

Patent

CA 2336630

This invention is an apparatus, and method for making a transfer device comprising a tube bundle. The transfer device is suitable for use as a heat exchanger in a blood cardioplegia circuit, for example. The apparatus axially winds a flexible tube (30) around a winding core (10). The apparatus includes a winding core, a core rotating means (20), tube bobbin (22), and a tube shuttle to guide the tube around the core. A shuttle rotating means (28) rotates the tube shuttle around the core. The method of making the transfer device includes providing a winding core, winding a tube from end to end around the winding core, fitting the wound bundle into a housing (50), sealing the first, and second ends of the housing using a potting material (60), cutting the ends of the bundle to expose a lumen within the tubes attaching first end cap (56), and second end cap (58).

L'invention concerne un appareil et un procédé de fabrication d'un dispositif de transfert comprenant un faisceau de tubes et servant d'échangeur thermique dans un circuit de cardioplégie sanguine, par exemple. L'appareil a pour fonction d'enrouler un tuyau souple (30) autour d'un noyau d'enroulement (10) et est pourvu d'un noyau d'enroulement, de moyens de rotation (20) du noyau, d'une bobine (22) tubulaire et d'une navette servant à guider le tuyau autour du noyau. Les moyens de rotation (28) de la navette font tourner la navette autour du noyau. Le procédé de fabrication du dispositif de transfert consiste à apporter un noyau d'enroulement, à enrouler un tuyau de bout à bout autour du noyau d'enroulement, à insérer le faisceau enroulé dans un boîtier (50), à sceller les première et seconde extrémités du boîtier à l'aide d'une matière d'enrobage (60), à couper les extrémités du faisceau pour ouvrir une lumière dans les tuyaux et à fixer le premier capuchon d'extrémité (56) et le second capuchon d'extrémité (58).

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