Continuous positioning apparatus and methods

• US 20070287925A1
• Filed: 05/14/2007
• Published: 12/13/2007
• Est. Priority Date: 05/13/2006
• Status: Active Grant

• Current Assignee: Zhejiang Shanshi Biological Medical Devices Company Limited
• Original Assignee: Tensys Medical Inc. (Recorders & Medicare Systems Pvt Ltd.)
• Inventors: Goharlaee, Manouchehr, Craycroft, Warren, Gallant, Stuart, Keitel, Todd, Katayama, Andrew
• Granted Patent: US 8,506,497 B2
• Time in Patent Office: Days
• US Class Current: 600/494
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02233 Occluders specially adapted therefor tourniquets A61B17/132
• CPC Class Codes: A61B 5/0225 the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
• CPC Class Codes: A61B 5/6843 Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424

Abstract

Improved apparatus and methods for non-invasively assessing one or more parameters associated with systems such as fluidic circulating systems (e.g., the circulatory system of a living organism). In a first aspect, an improved method of continuously measuring pressure from a compressible vessel is disclosed, wherein a substantially optimal level of compression for the vessel is achieved and maintained using dynamically applied dither perturbations (e.g., modulation) on the various axes associated with the vessel. In a second aspect, an improved apparatus and method are provided for monitoring hemodynamic parameters, such as blood pressure, in a continuous and non-invasive manner while operating under a single unifying scheme. One variant of this scheme using a simulated annealing (SA) type approach to determining and maintaining an optimal operating state.

Claims

1. Transient-resistant apparatus for determining the blood pressure of a living subject comprising a processor and a computer program running on said processor, said program comprising at least one simulated annealing related algorithm.

2. A method of determining hemodynamic parameters using a simulated annealing-based algorithm.

3. A computer storage medium comprising a computer program adapted for substantially unified mode operation according to a simulated annealing algorithm.

4. A method of maintaining a substantially optimal level of compression for the vessel using dynamically applied dither perturbations on at least one axes associated with the vessel.