Breathing assistance apparatus
First Claim
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1. A device for controlling gas flow between a pressurised gases supply and a user, comprising:
- a body portion including a first opening adapted to be in fluid communication with a pressurised gases supply, a second opening adapted to be in fluid communication with a user, and an interior fluidally communicating said first opening with said second opening at least one auxiliary outlet in said body portion, and a valve configured to close said outlet when said gas flow through said interior is above a predetermined threshold.
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Accused Products
Abstract
A valve for use in a CPAP system or any stem at a pressure above ambient which vents the pressurised gases from the blower during expiration. Due to the pressure-flow characteristics of the blower this results in the patient having a much lower airway pressure during expiration making breathing easier. The valve includes a movable member which blocks flow from the blower to the patient during exhalation and vents externally. During inhalation gases flow normally from the blower to the patient. Also disclosed is a further application as an antiasphyxia
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Citations
12 Claims
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1. A device for controlling gas flow between a pressurised gases supply and a user, comprising:
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a body portion including a first opening adapted to be in fluid communication with a pressurised gases supply, a second opening adapted to be in fluid communication with a user, and an interior fluidally communicating said first opening with said second opening at least one auxiliary outlet in said body portion, and a valve configured to close said outlet when said gas flow through said interior is above a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification