Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2006-10-17
2006-10-17
Lo, Weilun (Department: 3761)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204280, C128S205130, C128S205160, C128S205170
Reexamination Certificate
active
07121278
ABSTRACT:
A combination of a bellows structure (12), volume restrictor, and pressure restrictor for use on a hand-operated resuscitator is provided to enable delivery of ventilation within specific volume and pressure limitations specified by the operator. The bellows structure (12) consistently provides predictable and uniform generation of gas flow for ventilation without regard to one or two-handed technique, hand placement, or hand size. The volume restrictor, primarily comprising of an inflow obturator (20), outflow obturator (22), and placement cam (34), enables the physician to specify a specific tidal volume to be delivered, which constitutes a volume-controlled cycling capability of the invention. The pressure restrictor, primarily comprising of an outer housing (40), stopper housings (41), and a stopper (50), enables the physician to specify a specific maximum airway pressure to be exposed to the patient, which constitutes a pressure-controlled cycling capability of the invention. Combined use of the volume and pressure restricting mechanisms can provide for various additional abilities, including limiting airway pressure during volume-controlled ventilation or providing a means to detect decreasing pulmonary compliance.
REFERENCES:
patent: 4037595 (1977-07-01), Elam
patent: 4077404 (1978-03-01), Elam
patent: 4121580 (1978-10-01), Fabish
patent: 4239038 (1980-12-01), Holmes
patent: 4374521 (1983-02-01), Nelson et al.
patent: 4501271 (1985-02-01), Clifton et al.
patent: 4774941 (1988-10-01), Cook
patent: 4782831 (1988-11-01), Gallant
patent: 4821713 (1989-04-01), Bauman
patent: 4870962 (1989-10-01), Sitnik
patent: 4898166 (1990-02-01), Rose et al.
patent: 4934360 (1990-06-01), Heilbron et al.
patent: 5067487 (1991-11-01), Bauman
patent: 5163424 (1992-11-01), Kohnke
patent: 5217006 (1993-06-01), McCulloch
patent: 5222491 (1993-06-01), Thomas
patent: 5305739 (1994-04-01), Gray
patent: 5359998 (1994-11-01), Lloyd
patent: 5427091 (1995-06-01), Phillips
patent: 5520173 (1996-05-01), Kuhn
patent: 5540221 (1996-07-01), Kaigler et al.
patent: 5546934 (1996-08-01), Kaigler et al.
patent: 5558371 (1996-09-01), Lordo
patent: 5628305 (1997-05-01), Melker
patent: 5647354 (1997-07-01), Lakhani et al.
patent: 5711295 (1998-01-01), Harris, II
Lo Weilun
Mendoza Michael
LandOfFree
Method and apparatus for manual delivery of volume and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for manual delivery of volume and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for manual delivery of volume and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3717735