DIAPHRAGM PRESSURE POD FOR MEDICAL FLUIDS
First Claim
1. A pressure sensing pod for a tubular medical fluid flow set which connects in flow-through relation to fluid flow tubing of said set, said pressure sensing pod comprising:
- a chamber having a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments, the fluid flow tubing communicating with one of said compartments and being isolated from the other of said compartments; and
a port carried on said pod, said port having a seal therein, said port communicating with the other of said compartments,wherein said other of said compartments is hermetically sealed until said port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of said seal.
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Accused Products
Abstract
A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.
13 Citations
20 Claims
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1. A pressure sensing pod for a tubular medical fluid flow set which connects in flow-through relation to fluid flow tubing of said set, said pressure sensing pod comprising:
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a chamber having a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments, the fluid flow tubing communicating with one of said compartments and being isolated from the other of said compartments; and a port carried on said pod, said port having a seal therein, said port communicating with the other of said compartments, wherein said other of said compartments is hermetically sealed until said port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of said seal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A sealed port carried on a medical device, said port comprising:
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a lumen which is sealed by a partition having a peripheral connection with a wall of said lumen;
a major portion of the peripheral connection being relatively thin to be broken open;
a minor portion of said peripheral connection being thicker than the major portion so as to function as a hinge;a first section of said partition adjacent to said major portion being thicker than a corresponding, opposite section of said partition adjacent to the periphery of said minor portion so as to focus rupturing force to the periphery of said first section when a tubular connector is inserted into said lumen and pressed inwardly against said first section without contact with said opposite section. - View Dependent Claims (9)
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10. A pressure transmitting pod for connection in flow-through relation to fluid flow tubing of a fluid flow set, said pod comprising:
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a chamber; a flexible, fluid impermeable diaphragm dividing the pod into separate compartments, a first of said compartments communicating with flow connectors for said fluid flow tubing, a second of said compartments communicating with a connection port for connection with a length of pressure tubing at one end thereof, which tubing is for sealed connection at its other end to a remote pressure connector of a pressure sensing machine, to transmit pressure from the second of said compartments through the pressure tubing to the pressure sensing machine for pressure monitoring, said diaphragm having a dome shape, and being sufficiently flexible to easily distort in a manner reflective of pressure changes, to vary the volumes of said one and other compartments. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A sealed port carried on a medical device, said port comprising:
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a lumen which is sealed by a partition having a peripheral connection with the wall of said lumen, the partition having a diametrically opposed pair of peripheral, thin-wall tear lines adjacent to the lumen wall and comprising a major portion of the circumference of said partition, said partition also defining a thin-wall tear line extending substantially as a diameter across said partition from one of said peripheral tear lines to the other of said tear lines; said partition also defining a diametrically opposed pair of peripheral, thicker-wall, hinged portion circumferentially spacing the peripheral tear lines, wherein a connector entering said lumen wall tears the tear lines to open the sealed port by causing a pair of torn-apart partition port portions to each pivot about said hinged portions. - View Dependent Claims (20)
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Specification