Methods and apparatus for supplying clean breathable gas
First Claim
1. An apparatus for the delivery of treatment for a patient with asthma, comprising:
- a blower with an inlet to supply breathable gas to a patient interface,a transducer to generate a flow signal representative of flow of the patient,a transducer to generate a pressure signal representative of pressure supported by the blower,a processor to receive data from said flow signal and said pressure signal with programmed instructions for controlling said blower and to detect an asthma symptom from an analysis of said data, anda filter to substantially remove allergen particulates from the breathable gas flow.
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Accused Products
Abstract
The invention features methods and apparatus for the treatment of asthma patients. A controlled supply of breathable air delivered to a patient interface or mask (4) is controlled for patient comfort to maintain a steady pressure level in a range 2 to 4 cm H2O to accommodate patient respiration. The breathable air is cleaned by a high efficiency particulate arresting filter (10) to remove allergens from the air supply. The apparatus may be programmed to automatically detect asthma-related symptoms such as an asthma attack by analyzing the respiratory flow of the patient. In response to the detection of such an attack, the apparatus may provide an audible warning or if configured with a treatment delivery module (14A, 14B), the device may administer a therapeutically effective dose of a drug or substance, for example, a broncho-dilator, to alleviate the patient'"'"'s breathing difficulty. Preferred mask designs allow for proper CO2 washout to accommodate the low pressures supplied to the mask and prevent asphyxia.
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Citations
30 Claims
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1. An apparatus for the delivery of treatment for a patient with asthma, comprising:
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a blower with an inlet to supply breathable gas to a patient interface, a transducer to generate a flow signal representative of flow of the patient, a transducer to generate a pressure signal representative of pressure supported by the blower, a processor to receive data from said flow signal and said pressure signal with programmed instructions for controlling said blower and to detect an asthma symptom from an analysis of said data, and a filter to substantially remove allergen particulates from the breathable gas flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for treating a patient with asthma, comprising the steps of:
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delivering a controlled supply of breathable air to a patient, providing a patient interface that substantially limits the patient'"'"'s breathable air to the controlled supply of breathable air when it is being supplied through the interface, cleaning said breathable air in conjunction with the delivery of said breathable air to the patient to substantially remove allergen particulates from said air before said patient inhales said allergen particulates, monitoring air flow of the patient, and analyzing said air flow to detect a symptom of asthma. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification