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AssigneeAdvanced Medical Balloons GmbH
InventorFred Göbel
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The invention describes a specific, multilayer tubular film for the manufacture of catheter devices that are usable in the most odor-neutral manner possible. The passage of substances through the film wall may be reduced or avoided by incorporating suitable barrier layers. The delivery of strong-smelling active substances and also the discharge of intensely odorous excretions or secretions may be optimized in a problem-solving manner by proportional layers of EVOH- or PVDC-based materials, for example, in the multilayer film structure. The invention combines these barrier layers with mechanically loadable carrier layers made of polyurethane (PUR). PVC, or also polyamide (PA) or PA-related material layers, for example. The invention describes, among other things, embodiments of catheters having retaining balloon components that are equipped with odor-inhibiting layer portions over the entire intracorporeal and extracorporeal surface of the catheter and that thus provide maximum protection against release of odors. The invention further describes embodiments that are manufacturable in a particularly advantageous manner, with several of the components that make up the catheter being manufactured by simultaneous forming from a single film tube blank.
A catheter-like device (1) for the medical delivery and/or discharge of substances that are particularly odor-intensive, particularly soluble, or otherwise capable of migration, comprising a balloon component (3, 3a) that anchors and retains a device (1) that is placed in an organ or in a body interior space, a delivering and/or discharging tube unit (2a) that adjoins the balloon component (3, 3a) and leads transluminally to the organ or to the interior space, and an extracorporeally adjoining tube-like portion (2), characterized in that at least the extracorporeal tube-like portion (2) is formed from a multilayer film, the multilayer film including at least one barrier layer (19) made of an odor-proof barrier material and at least one carrier layer (24) made of some other, mechanically stable material, the wall thickness of the carrier layer (24) being greater than the wall thickness of the barrier layer (19), wherein one or more layers of the multilayer film material are coextruded with one another.
A catheter-like device (1) for the medical delivery and/or discharge of substances that are particularly odor-intensive, particularly soluble, or otherwise capable of migration, comprising a balloon component (3, 3a) that anchors and retains a device (1) that is placed in an organ or in a body interior space, a delivering and/or discharging tube unit (2a) that adjoins the balloon component (3, 3a) and leads transluminally to the organ or to the interior space, and an extracorporeally adjoining tube-like portion (2), characterized in that at least the extracorporeal tube-like portion (2) is formed from a multilayer tubular film blank including at least one barrier layer (19) made of an odor-proof barrier material and at least one carrier layer (24) made of some other, mechanically stable material, wherein the at least one barrier layer (19) and the at least one carrier layer (24) of the multilayer tubular film blank are coextruded with one another in such a way that the wall thickness of the carrier layer (24) is greater than the wall thickness of the barrier layer (19).
A catheter-like device (1) for the medical delivery and/or discharge of substances that are particularly odor-intensive, particularly soluble, or otherwise capable of migration, comprising a balloon component (3, 3a) that anchors and retains a device (1) that is placed in an organ or in a body interior space, a delivering and/or discharging tube unit (2a) that adjoins the balloon component (3, 3a) and leads transluminally to the organ or to the interior space, and an extracorporeally adjoining tube-like portion (2), characterized in that at least the extracorporeal tube-like portion (2) is formed from a multilayer tubular film blank including at least one barrier layer (19) made of an odor-proof barrier material and at least one carrier layer (24) made of a mechanically stable material from the group consisting of thermoplastic polyurethanes (TPU), polyvinyl chloride (PVC), polyamide (PA) or polyether block amide (PEBAX), wherein the at least one barrier layer (19) and the at least one carrier layer (24) are coextruded with one another in such a way that the wall thickness of the carrier layer (24) is greater than the wall thickness of the barrier layer (19) and that the overall thickness dr of the carrier layer (24) or of all carrier layers (24) is greater than or equal to five times the overall thickness de of the barrier layer (19) or of all barrier layers (19):
Dependencies are inferred from the claim text.