Heat and moisture exchanger for breathing
First Claim
1. A heat and moisture exchanger device for a breathing system and comprising:
- a housing having a patient end port and a machine end port and a passageway in the housing providing communication between the ports through the housing passageway;
heat and moisture exchange media in the housing and extending entirely across the passageway defining a patient end chamber associated with the patient end port, and a machine end chamber associated with the machine end port; and
a first vane dividing the patient end chamber, and having a flat edge facing away from the media and bisecting the patient end port.
1 Assignment
0 Petitions
Accused Products
Abstract
A heat and moisture exchanger (HME) media disk and associated virus and bacteria filter disk are placed in a housing of two clear plastic shells ultrasonically welded together and having ports at opposite ends of the housing for connection of flexible respiratory tubing to them. A guide vane is situated across the port at the patient end of the housing and extends into the HME and provides turbulence for efficient usage of the media for heat and moisture exchange functions. Vanes are provided in the housing adjacent the machine end port of the housing. A carbon dioxide sampling tap is provided on the machine end portion of the housing. The vanes are tapered from a small or narrow edge at the disk surface to thicker cross sections at increasing distances from the disk toward the housing end ports. Provision for connections to standard tubing is made at the ports.
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Citations
15 Claims
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1. A heat and moisture exchanger device for a breathing system and comprising:
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a housing having a patient end port and a machine end port and a passageway in the housing providing communication between the ports through the housing passageway; heat and moisture exchange media in the housing and extending entirely across the passageway defining a patient end chamber associated with the patient end port, and a machine end chamber associated with the machine end port; and a first vane dividing the patient end chamber, and having a flat edge facing away from the media and bisecting the patient end port. - View Dependent Claims (2, 3, 4)
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5. A heat and moisture exchanger device a breathing system and comprising:
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a housing which is circular about an axis and having a patient end port and a machine end port and a passageway in the housing providing communication between the ports through the housing passageway; heat and moisture exchange media in the housing and extending entirely across the passageway defining a patient end chamber associated with the patient end port, and a machine end chamber associated with the machine end port; a first vane dividing the patient end chamber; and second and third vanes located in the machine end chamber and extending radially outward from a circle centered on the axis, to the inner periphery of the machine end chamber. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A heat and moisture exchanger device for a breathing system and comprising:
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a housing a having patient end port and a machine end port and a passageway in the housing providing communication between the ports through the housing passageway; heat and moisture exchange media in the housing and extending entirely across the passageway defining a patient end chamber associated with the patient end port, and a machine end chamber associated with the machine end port; a first vane dividing the patient end chamber; and second and third vanes in the machine end chamber; the housing being symmetrical about an axis; the vanes being wedge-shaped; the first vane lying in a first plane containing the axis; and the second and third vanes lying in a second plane containing the axis. - View Dependent Claims (12, 13, 14, 15)
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Specification