Device and method for mixing medical fluids
First Claim
1. A device for mixing medical fluids, said device comprising an inlet port for receiving at least a first medical fluid, an injection port for injection of a second medical fluid, an outlet port for exit of a mixed flow of said first and second medical fluids, a first duct extending between said injection port and said inlet port, and a second duct extending between said inlet port and said outlet port, said injection port being sealed by a fluid-proof membrane which can be penetrated by an injection needle when injecting said second medical fluid, at least a first portion made of a first material and a second portion made of a second material, wherein said second material is substantially more resilient than said first material, and said inlet port and said injection port are included in said first portion and said outlet port is included in said second portion wherein said first and second portions are attached to each other by means of a combined friction coupling and snap connection providing a first retention force.
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Accused Products
Abstract
A device and method for mixing medical fluids is disclosed. The device has an inlet port, an injection port, an outlet port, a first duct between the injection port and the inlet port, and a second duct between the inlet port and the outlet port. The injection port is sealed by a fluid-proof membrane which can be penetrated by an injection needle. The device further includes at least a first portion made of a first material and a second portion made of a second, substantially more resilient material, wherein the inlet port and the injection port are included in the first portion and the outlet port is included in the second portion, and the first and second portions are attached to each other by means of a combined friction coupling and snap connection.
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Citations
45 Claims
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1. A device for mixing medical fluids, said device comprising
an inlet port for receiving at least a first medical fluid, an injection port for injection of a second medical fluid, an outlet port for exit of a mixed flow of said first and second medical fluids, a first duct extending between said injection port and said inlet port, and a second duct extending between said inlet port and said outlet port, said injection port being sealed by a fluid-proof membrane which can be penetrated by an injection needle when injecting said second medical fluid, at least a first portion made of a first material and a second portion made of a second material, wherein said second material is substantially more resilient than said first material, and said inlet port and said injection port are included in said first portion and said outlet port is included in said second portion wherein said first and second portions are attached to each other by means of a combined friction coupling and snap connection providing a first retention force.
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23. A method for enabling mixing of medical fluids, said method comprising the steps of:
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providing a mixing device exhibiting an inlet port, an injection port and an outlet port, coupling said inlet port to a fluid transfer port of a fluid container containing a first medical fluid, connecting a fluid transfer device having an injection needle to said injection port by means of a double-membrane bayonet coupling, penetrating fluid-proof membranes included in said double-membrane bayonet coupling by means of said injection needle, injecting a second medical fluid from a second medical fluid-reservoir connected to said fluid transfer device into said first medical fluid, passing a mixed flow of said first and second medical fluids through said outlet port into an infusion line, and providing a combined friction coupling and snap connection in said device between a first portion which is made of a first material and exhibits said inlet port and said injection port and a second portion which is made of a second material being substantially more resilient than said first material and which exhibits said outlet port. - View Dependent Claims (24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification