Surgery – Liquid medicament atomizer or sprayer
Patent
1985-10-16
1987-07-07
Recla, Henry J.
Surgery
Liquid medicament atomizer or sprayer
12820423, A61M 1600
Patent
active
046779752
ABSTRACT:
A method and apparatus for dispensing inhalable material includes the steps of indicating to a patient that a breath should be taken, detecting the start of inhalation, causing inhalable material to be supplied to the air passages of the patient during a preselected part of the period of inhalation, then after a predetermined inhalation period substantially preventing further inhalation, indicating to the patient that exhalation should begin, detecting the start of exhalation, and after a predetermined exhalation period again indicating that a breath should be taken. The dispenser includes a supply of inhalable material, a mouthpiece, and a control device for selectively controlling the flow between the supply and the mouthpiece, as well as between the supply and the atmosphere. The device also includes a signalling means for indicating to the user when to inhale and subsequently when to exhale. Also included is a detection device to detect commencement of inhalation and to start a timer, as well as a second detection device to detect commencement of exhalation and to cause a second timer to start, to time a predetermined exhalation period.
REFERENCES:
patent: 3726270 (1973-04-01), Griffis et al.
patent: 4106503 (1978-08-01), Rosenthal et al.
patent: 4109656 (1978-08-01), Goethel et al.
patent: 4174712 (1979-11-01), Moren et al.
patent: 4206644 (1980-06-01), Platt
patent: 4253468 (1981-03-01), Lehmbeck
patent: 4357936 (1982-11-01), Ellestad et al.
patent: 4462398 (1984-07-01), Durkan et al.
Edgar Brian W.
Elliott Robert B.
Recla Henry J.
The University of Auckland
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