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US 8,999,471 B2Granted
Stopper for closing a medical system
OwnerThomas Nicola, Martin Schmidtleininventors
Life of this patent
Estimating the term…
Abstract
A cylindrical stopper for closing a medical system and a method for closing a medical system, and to the medical system itself, closed with the stopper of the invention.
Claims8
A stopper having two opposite end faces for closing a medical system, the stopper comprising:
- a core made of a plastics material comprising one or more polymers having a high resilience and selected from polyphenylene oxide, styrene/ethylene/propylene copolymer (SEP), medical white oil and polybutylene;
- optionally one or more interlayers made of a plastics material comprising one or more polymers selected from functionalized polypropylene (PP), polyethylene (PE), functionalized styrene/ethylene/butylene block copolymer (SEB), polyethylene plastomer, polyethylene copolymer, ethylene/vinyl acetate (EVA), styrene/ethylene/propylene copolymer (SEP), oil, polypropylene (PP), polyethylene (PE), styrene/isoprene/styrene block copolymer (SIS), or polybutene (PB);
- and
- optionally an outer layer made of a plastics material comprising one or more polymers selected from polypropylene, polyester, polycarbonate, polyethylene copolymer, polyethylene plastomer, ethylene-vinyl acetate (EVA), PCCE or SEB/SEP, PMP, PB, plasticized PVC (PVC-P) or mixtures of these,
- wherein the material of the core, and when present the material of the outer layer of the stopper, softens at a temperature of 90° C. to such an extent that it enters together with a surrounding material into a bond after cooling to a temperature at least 20° C. below the temperature at which the material becomes fluid, and the stopper having a boat shape with a width of 10 to 40 mm, a length of 3 to 15 mm, and a thickness of 6 to 20 mm and being characterized in that it has at least one channel having a diameter of 6 to 9 mm.
2 more elements
A stopper, comprising:
- a core made of a plastics material comprising one or more polymers selected from polyphenylene oxide, styrene/ethylene/propylene copolymer (SEP), medical white oil and polybutylene;
- one or more interlayers made of a plastics material comprising one or more polymers selected from functionalized polypropylene (PP), polyethylene (PE), functionalized styrene/ethylene/butylene block copolymer (SEB), polyethylene plastomer, polyethylene copolymer, ethylene/vinyl acetate (EVA), styrene/ethylene/propylene copolymer (SEP), oil, polypropylene (PP), polyethylene (PE), styrene/isoprene/styrene block copolymer (SIS), and polybutene (PB);
- an outer layer made of a plastics material comprising one or more polymers selected from polypropylene, polyester, polycarbonate, polyethylene copolymer, polyethylene plastomer, ethylene-vinyl acetate (EVA), PCCE or SEB/SEP, PMP, PB, plasticized PVC (PVC-P) or mixtures thereof;
- and
- a channel having a diameter of 6 to 9 mm,
- wherein the material of the core and the material of the outer layer of the stopper soften at a temperature of 90° C. to such an extent that it enters together with a surrounding material into a bond after cooling to a temperature at least 20° C. below the temperature at which the material becomes fluid, and
- wherein the stopper has a width of 10 to 40 mm, a length of 3 to 15 mm, and a thickness of 6 to 20 mm.
4 more elements
A stopper, comprising:
- a core made of a plastics material comprising one or more polymers selected from polyphenylene oxide, styrene/ethylene/propylene copolymer (SEP), medical white oil and polybutylene;
- and
- a channel having a diameter of 6 to 9 mm,
- wherein the material of the core softens at a temperature of 90° C. to such an extent that it enters together with a surrounding material into a bond after cooling to a temperature at least 20° C. below the temperature at which the material becomes fluid, and
- wherein the stopper has a width of 10 to 40 mm, a length of 3 to 15 mm, and a thickness of 6 to 20 mm.
2 more elements
Dependencies are inferred from the claim text.