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:
Jul. 12, 2011
Filed:
Jan. 10, 2008
Jeffrey E. Stahmann, Ramsey, MN (US);
John Hatlestad, Maplewood, MN (US);
Jesse W. Hartley, Lino Lakes, MN (US);
Richard Fogoros, Pittsburg, PA (US);
Jeffrey E. Stahmann, Ramsey, MN (US);
John Hatlestad, Maplewood, MN (US);
Jesse W. Hartley, Lino Lakes, MN (US);
Richard Fogoros, Pittsburg, PA (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
This patent document discusses systems, devices, and methods for increasing a sensitivity or specificity of thoracic fluid detection in a subject and differentiating between pleural effusion and pulmonary edema. In one example, a thoracic impedance measurement circuit senses a thoracic impedance signal. In another example, a processor receives the thoracic impedance signal and determines whether such thoracic impedance signal is 'significant.' A significant thoracic impedance signal indicates the presence of thoracic fluid and may be recognized by comparing the thoracic impedance signal (or variation thereof) to a thoracic impedance threshold. When a significant thoracic impedance signal is recognized, the processor is adapted to detect one or both of: a pleural effusion indication and a pulmonary edema indication using one or a combination of: physiologic information, patient symptom information, and posture information. In another example, the thoracic impedance threshold is adjusted using such physiologic, patient symptom, or posture information.