Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1994-09-16
1998-03-10
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820324, 12820018, A61M 1508, A61M 1600, B05D 714, B05D 8326
Patent
active
057249598
ABSTRACT:
A dry powder inhaler (10) consists of a chamber (12) into which powder is introduced from a metering system, and a mouthpiece (26) through which a patient inhales, connected by a duct (16), so that air flows through the chamber carrying the powder into the patient's lungs. Within the duct is an impactor (25) consisting of a plate (27) spaced in front of a similarly sized aperture, and between the chamber and the impactor plate is an orifice (18) narrower than the duct, so the air stream is diverted along S-shaped paths to avoid the plate. The presence of the impactor can improve the efficiency of delivery of a drug to the lungs, and decrease the unwanted dose to the mouth and throat, as the latter is principally due to agglomerates or larger particles which are intercepted or broken up by the impactor.
REFERENCES:
patent: 567558 (1896-09-01), Wiseman
patent: 2214032 (1940-09-01), Stewart
patent: 2503732 (1950-04-01), Heisterkamp
patent: 2579280 (1951-12-01), Trumbour et al.
patent: 2581182 (1952-01-01), Fields
patent: 2642063 (1953-06-01), Brown
patent: 2670739 (1954-03-01), McNeill
patent: 2693805 (1954-11-01), Taplin et al.
patent: 2992645 (1961-07-01), Fowler
patent: 3302374 (1967-02-01), Szekely
patent: 3507277 (1970-04-01), Altounyan et al.
patent: 3518992 (1970-07-01), Altounyan et al.
patent: 3795244 (1974-03-01), Lax et al.
patent: 3837341 (1974-09-01), Bell
patent: 3838686 (1974-10-01), Szekely
patent: 4739754 (1988-04-01), Shaner
patent: 4945929 (1990-08-01), Egilmex
patent: 5033463 (1991-07-01), Cocozza
McAughey John Jackson
Pritchard John Nigel
AEA Technology PLC
Asher Kimberly L.
Hinds William R.
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