Ambulatory patient monitoring apparatus, system and method

• US 8,900,153 B2
• Filed: 03/20/2008
• Issued: 12/02/2014
• Est. Priority Date: 03/20/2007
• Status: Expired due to Fees

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Mortara Instrument, Inc. (Baxter International Inc.)
• Inventors: Bagha, Merat, Riobo Aboy, Pedro Mateo
• Primary Examiner(s): QIAN, CELINE X
• Application Number:
  US12/052,674
• Publication Number:
  US 20080234587A1
• Time in Patent Office: 2,448 Days
• Field of Search: None
• US Class Current: 600/483
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick

Abstract

A patient monitoring device that combines physiological data collection with actigraphy data collection and associates the physiological data with synchronous actigraphy data. A method for processing actigraphy data by calculating absolute difference vectors of actigraphy signal vectors.

Claims

1. A patient monitoring device comprising:

(a) a sensor interface configured to receive physiological sensor data, said sensor interface comprising an ambulatory blood pressure monitor (APBM);

(b) an activity sensor configured to generate activity data, said activity sensor including an accelerometer; and

(c) a processor coupled with the sensor interface and said activity sensor configured to synchronize said APBM'"'"'s data and said accelerometer'"'"'s data.

2. The patient monitoring device of claim 1, wherein said physiological sensor data further includes an electrocardiogram monitor with integrated actigraphy.

3. The patient monitoring device of claim 1, wherein said physiological sensor data further includes an oxygen saturation monitor with integrated actigraphy.

4. The patient monitoring device of claim 1, wherein said activity sensor is a multiple axis accelerometer.

5. The patient monitoring device of claim 1, wherein said activity sensor is a gyroscope.

6. The patient monitoring device of claim 1, wherein said activity sensor is an inclination sensor.

7. The patient monitoring device of claim 1, further comprising a memory to store the physiological sensor data including ambulatory blood pressure monitoring data and associated synchronized activity data.

8. The patient monitoring device of claim 1 wherein:

the sensor interface is configured to receive physiological sensor data comprising a plurality of data points, each data point associated with one of a plurality of sample windows;

said activity sensor is configured to generate activity data comprising a plurality of a summed absolute difference vectors, each summed absolute difference vector associated with one of the plurality of sample windows; and

the processor is configured to associate the physiological sensor data with synchronized portions of activity data by associating each physiological sensor data point with one of the summed absolute difference vectors associated with the same sample window.