Patent 4782832 Issued on November 8, 1988. Estimated Expiration Date: July 30, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
128/207.18, Respiratory gas supply means enters nasal passage128/204.18, Means for supplying respiratory gas under positive pressure128/204.23Means for sensing condition of user's body
An improved nasal puff assembly is provided which is of particular benefit in the treatment of obstructive sleep apnea and which is characterized by a gas-delivery puff which fits only in the nose of the patient and is therefore of relatively small size and can be comfortably worn. The nasal puff of the invention advantageously includes a plenum chamber having an inlet and a pair of laterally spaced outlets; a pair of soft synthetic resin nares elements or pillows are operatively coupled with the spaced plenum outlets and are designed for ready adjustability so that the effective positions thereof can be altered individually for permitting custom fitting of the nares elements with respect to the nares of different patients. In this way a relatively small number of different sizes of nasal puff can be modified to meet the needs of virtually all patients.
Other References
Martin, R. J. et al., "Acute and Long-Term Ventilatory Effects of Hyperoxia in the Adult Sleep Apnea Syndrome", Am. Rev. Respir. Dis. 1982; 125:175-180
Rapaport, D. M. et al., "Reversal of the `Pickwickian Syndrome` by Long-Term Use of Nocturnal Nasal-Airway Pressure", The New England Journal of Medicine, Medical Intelligence, vol. 307, No. 15, Oct. 7, 1982, pp. 931-933
Case Reports--"Remission of Severe Obesity-Hypoventilation Syndrome after Short-Term Treatment During Sleep with Nasal Continuous Positive Airway Pressure", Am. Rev. Respir. Dis. 1983:128:177-181
Sullivan, C. E. et al., "Reversal of Obstructive Sleep Apnea by Continuous Positive Airway Pressure Applied Through the Nares", The Lancet, pp. 862-865, Apr. 18, 1981