The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 29, 2000
Filed:
Feb. 06, 1998
Keith G Lurie, Minneapolis, MN (US);
CPRX LLC, Minneapolis, MN (US);
Abstract
The invention provides methods and devices for treating a patient suffering from heart failure. According to one exemplary method, a facial mask is sealed around the patient's mouth and nose, with the mask including a one-way expiration valve and an inspiratory threshold valve. The threshold valve is biased to open when a threshold pressure within the mask is in the range from about -3 cm H.sub.2 O to about -25 cm H.sub.2 O. With this arrangement, the patient breathes while the mask is sealed to the face, with the respiratory gasses being prevented from entering the patient's lungs during inhalation until the patient produces a pressure within the mask that is within the range from about -3 cm H.sub.2 O to about -25 cm H.sub.2 O. At this point, the inspiratory valve opens to allow respiratory gasses into the lungs.