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. 14, 1984
Filed:
Nov. 16, 1981
Clare E Barkalow, Comstock Park, MI (US);
Michigan Instruments, Inc., Grand Rapids, MI (US);
Abstract
A pneumatic lung analog for simulating spontaneous breathing and for testing of ventilatory devices used with spontaneously breathing patients and a kit for modifying training test lungs for this purpose is provided. The lung analog comprises a frame, a test ventilator, or lung simulator, expansible chamber; and a spontaneous breath expansible chamber disposed on the frame for receiving the output of a ventilatory device and a spontaneous breath generator, respectively. A movable end plate is disposed on the lung simulator and spontaneous breath expansible chambers for concurrent movement therewith when the spontaneous breath expansible chamber is inflated. Transducers are provided for measuring the airway pressure and the volume of air supplied to the lung simulator chamber by the ventilator being tested for determining the performance characteristics of the ventilator, such as the added work of breathing attributable to the ventilator.