Surgery – Respiratory method or device – Hypobaric body chamber
Patent
1996-10-03
1999-02-16
Lewis, Aaron J.
Surgery
Respiratory method or device
Hypobaric body chamber
601 44, 12820526, A61G 1000
Patent
active
058710086
ABSTRACT:
A high-frequency miniature pressure ventilator system including a variable volume pressure chamber arranged to surround a portion of the thoracic cavity of a body so as to isolate the portion of the body from atmospheric pressure. A pump assembly is operable for varying the pressure within the chamber so as to apply negative external pressure to the portion of the body during a negative cycle of operation. A valve assembly is operable for opening the chamber to a predetermined pressure during a positive cycle of operation in order to normalize a base pressure from which the pressure within said chamber is varied. In another embodiment there is provided a high-frequency pressure ventilator system including a variable volume pressure chamber arranged to surround the head of a body so as to isolate the head from atmospheric pressure. A pump assembly is operable for varying the pressure within the chamber so as to apply positive external pressure to the head during a positive cycle of operation. A valve assembly is operable for opening the chamber to predetermined pressure during a negative cycle of operation in order to normalize a base pressure from which the pressure within said chamber is varied.
REFERENCES:
patent: 4620538 (1986-11-01), Koegel et al.
patent: 4621621 (1986-11-01), Marsalis
patent: 4770165 (1988-09-01), Hayek
patent: 4815452 (1989-03-01), Hayek
patent: 4838263 (1989-06-01), Warwick et al.
patent: 4840167 (1989-06-01), Olsson et al.
patent: 4930498 (1990-06-01), Hayek
patent: 4977889 (1990-12-01), Budd
patent: 4982735 (1991-01-01), Yagata et al.
patent: 5056505 (1991-10-01), Warwick et al.
Harf et al., Journal of Applied Physiology, "Ventilation by high-frequency oscillation of thorax or at trachea in rats", vol. 56, No. 1, pp. 155-160, 1984.
Kolandaivelu et al., Journal of Applied Physiology, A miniature mechanical ventilator for newborn mice, vol. 84, No. 2, 1998.
Stern et al., Canadian Medical Association Journal, "Negative presure artifical respiration: use in treatment of respiratory failure of the newborn", vol. 102, No. 6, pp. 595-601, Mar. 28, 1970.
Linsao et al., Canadian Medical Association Journal, "Negative presure artifical respiration: use in treatment of respiratory distress syndrome of the newborn", vol. 102, No. 6, pp. 602-606, Mar. 28, 1970.
Kolandaivelu Kumaran
Poon Chi-Sang
Lewis Aaron J.
Massachusetts Institute of Technology
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