Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2000-05-12
2001-08-21
Weiss, John G. (Department: 3761)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S205170, C128S205230, C128S205240, C128S203280, C128S202270
Reexamination Certificate
active
06276363
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a medical device and more particularly to a resuscitator, i.e., a manually operated device utilized to provide emergency ventilatory assistance to facilitate the breathing of a sick or injured patient.
2. Description of the Related Art
The inventor is unaware of any prior art resuscitator which incorporates the ability to provide endotracheally administered medications, nebulized medications, and suction to a patient.
U.S. Pat. No. 5,575,279 of Douglas K. Beplate describes an isolation valve to be used by a care giver who is blowing such care giver's own breath into the lungs of a patient. The isolation valve of that patent employs a check valve to force the breath of the patient through an exhalation filter before such breath can reach the surrounding environment.
SUMMARY OF THE INVENTION
The present invention inserts, between a source of air or oxygen and a patient, a collapsible bag and a connecting complex. A nebulizer or aerosolizer for providing medication can be attached to the connecting complex. Additionally, the connecting complex includes an aperture with a removably attached self-sealing membrane through medications can be administered with a syringe. When the self-sealing membrane has been removed, a suction catheter may be placed through the aperture.
The connecting complex can communicate with the patient either through a mask or an endotracheal tube.
A one-way valve precludes liquids or gases expelled by the patient from reaching either the point of attachment for the nebulizer and aerosolizer or the collapsible bag.
A filtered exhaust aperture permits the exhaled breath of the patient to reach the atmosphere. A carbon dioxide detector placed in the exhaust aperture indicates whether the patient is breathing.
And utilizing a filter that has both a hydrophobic segment and a hydrophilic segment minimizes that chances that a harmful microorganism that associates with liquids will enter the surrounding environment.
REFERENCES:
patent: 3650093 (1972-03-01), Rosenberg
patent: 5279289 (1994-01-01), Kirk
patent: 5749358 (1998-05-01), Good et al.
patent: 6062217 (2000-05-01), Gray
Fehr Thompson E.
Patel Mital B.
Weiss John G.
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