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:
Jun. 05, 2001
Filed:
Apr. 07, 1999
Christer Ström, Pitea, SE;
Siemens Elema AB, Solna, SE;
Abstract
In a method and apparatus for determining at least one parameter related to a patient's spontaneous attempts at inspiration and/or the patient's respiratory effort in attempts at spontaneous inspiration, a pressure gradient is determined in relation to a known apparatus pressure and time, the pressure gradient being generated by the patient at inspiration, a residual positive pressure in the patient's lungs is determined and an output signal is generated. The output signal can represent determined parameters as well as other related calculated results. The pressure gradient can be extrapolated against residual positive pressure, and both a delay for respiratory assistance and true inspiratory effort can be determined.