Transducer protection device, particularly for hemodialysis processes
First Claim
1. A transducer protection device, particularly for hemodialysis processes, comprising:
- a first element;
a second element said first and second elements being made of plastics and being coupled coaxially with respect to a common axis thereof;
a first tubular connector;
a second tubular connector;
said first and second tubular connectors being each blended with a respective flange coaxial to said common axis so as to form said first and second elements, and said flanges being coupled to each other along a peripheral region thereof by ultrasonic thermal bonding;
a recess formed frontally, coaxial to said common axis, on a first one of said flanges;
a semipermeable membrane accommodated in said recess, in a fixed arrangement, by imbibition of melted plastics along a circular border region of said membrane upon thermal bonding; and
a circular ridge which is shaped complementarily to said border region and protrudes frontally from a second one of said flanges, the thermal bonding being performed on said ridge so as to achieve intimate bonding between said first and second flanges and said membrane, further comprising an annular cavity located frontally and peripherally to said second flange, and which is coaxial to said common axis and edges having a pointed longitudinal cross-section for enclosing said annular cavity.
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Accused Products
Abstract
A transducer protection device, particularly for hemodialysis processes, which comprises a first element and a second element made of plastics which are coupled coaxially with respect to a common axis and respectively comprise a first tubular connector and a second tubular connector which are blended with respective flanges which are coaxial to the common axis; the flanges are coupled to each other along their peripheral region by ultrasonic thermal bonding; the device has a recess formed frontally on a first one of the flanges, the recess being coaxial to the common axis and being suitable for accommodating, in a fixed arrangement, a semipermeable membrane by imbibition of melted plastics along a circular border region by the thermal bonding provided on a circular ridge which is shaped complementarily to the border region and protrudes frontally from the second flange so as to achieve bonding between the first and second flanges and the membrane.
57 Citations
9 Claims
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1. A transducer protection device, particularly for hemodialysis processes, comprising:
- a first element;
a second element said first and second elements being made of plastics and being coupled coaxially with respect to a common axis thereof;
a first tubular connector;
a second tubular connector;
said first and second tubular connectors being each blended with a respective flange coaxial to said common axis so as to form said first and second elements, and said flanges being coupled to each other along a peripheral region thereof by ultrasonic thermal bonding;
a recess formed frontally, coaxial to said common axis, on a first one of said flanges;
a semipermeable membrane accommodated in said recess, in a fixed arrangement, by imbibition of melted plastics along a circular border region of said membrane upon thermal bonding; and
a circular ridge which is shaped complementarily to said border region and protrudes frontally from a second one of said flanges, the thermal bonding being performed on said ridge so as to achieve intimate bonding between said first and second flanges and said membrane, further comprising an annular cavity located frontally and peripherally to said second flange, and which is coaxial to said common axis and edges having a pointed longitudinal cross-section for enclosing said annular cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a first element;
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9. A transducer protection device, particularly for hemodialysis processes, comprising:
- a first element;
a second element said first and second elements being made of plastics and being coupled coaxially with respect to a common axis thereof;
a first tubular connector;
a second tubular connector;
said first and second tubular connectors being each blended with a respective flange coaxial to said common axis so as to form said first and second elements, and said flanges being coupled to each other along a peripheral region thereof by ultrasonic thermal bonding;
a recess formed frontally, coaxial to said common axis, on a first one of said flanges;
a semipermeable membrane accommodated in said recess, in a fixed arrangement, by imbibition of melted plastics along a circular border region of said membrane upon thermal bonding; and
a circular ridge which is shaped complementarily to said border region and protrudes frontally from a second one of said flanges, the thermal bonding being performed on said ridge so as to achieve intimate bonding between said first and second flanges and said membrane, further comprising an annular cavity located frontally and peripherally to said second range, and which is coaxial to said common axis and edges having a pointed longitudinal cross-section for enclosing said annular cavity, said edges being designed to intimately bond with said first flange by ultrasonic thermal bonding in order to seal said first and second flanges thus coupled.
- a first element;
Specification