Pressure transmission apparatus
First Claim
1. An apparatus for the transmission of the pressure in the sterile area of a medical appliance to a non-sterile pressure gauge having a non-sterile connector of polyster/polyether-copolymer and a connector on the sterile side consisting of polycarbonate, wherein between the two connectors there is provided a sterility filter consisting of polytetrafluorethylene, which is positioned in a fluid-tight manner between two halves of the housing, said filter being supported by a backing, wherein the housing half on the sterile side comprises polycarbonate, characterized in that the non-sterile half of the housing consists of polyester/polyether-copolymer and in that the polycarbonate of the housing half on the sterile side is connected to the polyester/polyether-copolymer of the other housing half by ultrasonic welding.
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Accused Products
Abstract
An apparatus for the transmission of the pressure in the sterile area of a medical appliance to a non-sterile pressure gauge has two housing halves and a sterility filter positioned between the two housing halves. The filter is supported by a backing. The housing half on the sterile side is made of polycarbonate. The non-sterile half of the housing is made of a polymer, preferably a polyester/polyether copolymer, which provides an easily disconnectable and leak-proof connection with the pressure gauge. The two halves are ultrasonically welded together.
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Citations
18 Claims
- 1. An apparatus for the transmission of the pressure in the sterile area of a medical appliance to a non-sterile pressure gauge having a non-sterile connector of polyster/polyether-copolymer and a connector on the sterile side consisting of polycarbonate, wherein between the two connectors there is provided a sterility filter consisting of polytetrafluorethylene, which is positioned in a fluid-tight manner between two halves of the housing, said filter being supported by a backing, wherein the housing half on the sterile side comprises polycarbonate, characterized in that the non-sterile half of the housing consists of polyester/polyether-copolymer and in that the polycarbonate of the housing half on the sterile side is connected to the polyester/polyether-copolymer of the other housing half by ultrasonic welding.
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7. A pressure transmission apparatus comprising:
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a) a first housing half comprising polyester/polyether copolymer;
b) a second housing half comprising polycarbonate;
c) a sterility filter supported by a backing disposed between the first and second housing halves in a fluid tight manner; and
d) the first and second housing halves being connected by ultrasonically welding together the polyester/polyether copolymer and the polycarbonate. - View Dependent Claims (8, 9)
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- 10. An apparatus for the transmission of pressure in the sterile area of a medical appliance to a non-sterile pressure gauge comprising a sterility filter consisting of polytetrafluorethylene, which is positioned in a fluid-tight manner between two halves of a housing, said filter being supported by a backing, wherein the housing half on the sterile side comprises polycarbonate, and the non-sterile half of the housing comprises a second polymer different than polycarbonate and able to provide an easily disconnectable and leak-proof connection with the pressure gauge, the two halves being connected by ultrasonic welding the polycarbonate to the second polymer.
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13. A pressure transmission apparatus comprising:
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a) a first housing half comprising polyester;
b) a second housing half comprising polycarbonate;
c) a sterility filter supported by a backing disposed between the first and second housing halves in a fluid tight manner; and
d) the first and second housing halves being connected by ultrasonically welding together the polyester and polycarbonate. - View Dependent Claims (14)
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15. A pressure transmission apparatus comprising:
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a) a first housing half comprising a soft polymer;
b) a second housing half comprising polycarbonate;
c) a sterility filter of polytetrafluorethylene supported by a backing made of polyester disposed between the first and second housing halves in a fluid tight manner; and
d) the first and second housing halves being connected by ultrasonically welding together the soft polymer and the polycarbonate. - View Dependent Claims (16, 17, 18)
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Specification