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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0892692 (1992-05-27) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 476 인용 특허 : 0 |
A CPAP apparatus including: a variable pressured air source and means to vary the air pressure delivered therefrom; a nose piece for sealed air communication with a patient\s respiratory system; an air communication line from the air source to the nose piece; a sound transducer adapted to be in soun
A CPAP apparatus including: a variable pressured air source and means to vary the air pressure delivered therefrom; a nose piece for sealed air communication with a patient\s respiratory system; an air communication line from the air source to the nose piece; a sound transducer adapted to be in sound communication with the patient\s respiratory system; and a feedback system controlling the output pressure of the air source in response to an output from the transducer so as to increase the output air pressure from said air source, in response to detection of sound indicative of snoring, in accordance with a predefined procedure. The sound transducer, in its most general form, comprises a pressure transducer which, in addition to detecting snoring sounds, can detect other respiratory parameters such as the rate of breathing, inhaled air flow volume, and inhaled air flow rate. Output air pressure from air source is increased in response to one or more of these parameters in accordance with a pre-defined procedure.
A method of CPAP therapy that substantially reduces the occurrence of obstructed breathing and obstructive apneas comprising the steps of: providing nosepiece means for sealed air communication with a patient\s respiratory system; providing said nosepiece with a straight section through which the pa
A method of CPAP therapy that substantially reduces the occurrence of obstructed breathing and obstructive apneas comprising the steps of: providing nosepiece means for sealed air communication with a patient\s respiratory system; providing said nosepiece with a straight section through which the patient\s respiratory air flows; providing one or more sensors in pressure communication with the patient\s respiratory system; providing pressure drop amplification means in the form of one or more flow restrictor(s) in said straight section of said nosepiece; suitably positioning said one or more sensors on or connected to said nosepiece for measuring the pressure on either side of said flow restrictors; continuously sensing the patient\s breathing patterns using said one or more sensors; generating signals corresponding to said breathing patterns by means of said one or more sensors; connecting a variable air pressure source to said patient nosepiece by a suitable length of flexible air tubing; continuously delivering air to the patient from said variable air pressure source; electronically analyzing said signals; identifying characteristic abnormal breathing patterns indicative of obstructive breathing which may lead to apnea from said signals; increasing the CPAP level delivered to the patient when abnormal breathing patterns are identified to substantially restore normal breathing and to substantially prevent the occurrence of apnea; and reducing the CPAP level in the absence of breathing patterns indicative of obstructive breathing to a minimum level to maintain unobstructed breathing.
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