Respiratory assistance device
First Claim
1. Respiratory assistance device, comprising:
- an inhalation branch which is permanently connected, at its upstream end, to a first pressurized gas flow source and, at its downstream end, to a user'"'"'s airways;
at least a first exhalation valve and a second exhalation valve;
said exhalation valves being arranged on said inhalation branch and controlled so that said exhalation valves are closed during a user'"'"'s inhalation phase;
a drive means for controlling the first pressurized gas flow source and delivering a stream of gas with substantially constant non-zero flow rate to the inhalation branch throughout a user'"'"'s exhalation phase; and
a detection means located in proximity to the downstream end of the inhalation branch, for detecting a user'"'"'s respiratory activity, and sending a respiratory activity data item to the drive means.
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Accused Products
Abstract
A respiratory assistance device, includes an inhalation branch (2) which is permanently connected, at its upstream end, to a first source (1) of a flow of pressurized gas and, at its downstream end, to a user'"'"'s airway; at least a first (9) and a second (3) exhalation valve, these being arranged on the respiratory branch (2) and controlled so that they are closed during the inhalation phase; a detection unit (10) which, in proximity to the downstream end of the inhalation branch, detects the user'"'"'s respiratory activity and sends a respiratory-activity data item to drive element (12), the drive element (12) controlling the first gas flow source (1) in such a way as to deliver a gas stream with substantially constant non-zero flow rate to the inhalation branch (2) throughout the exhalation phase.
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Citations
16 Claims
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1. Respiratory assistance device, comprising:
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an inhalation branch which is permanently connected, at its upstream end, to a first pressurized gas flow source and, at its downstream end, to a user'"'"'s airways;
at least a first exhalation valve and a second exhalation valve;
said exhalation valves being arranged on said inhalation branch and controlled so that said exhalation valves are closed during a user'"'"'s inhalation phase;
a drive means for controlling the first pressurized gas flow source and delivering a stream of gas with substantially constant non-zero flow rate to the inhalation branch throughout a user'"'"'s exhalation phase; and
a detection means located in proximity to the downstream end of the inhalation branch, for detecting a user'"'"'s respiratory activity, and sending a respiratory activity data item to the drive means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification