Blood pressure monitor calibration

• US 10,194,872 B2
• Filed: 12/15/2015
• Issued: 02/05/2019
• Est. Priority Date: 07/23/2010
• Status: Active Grant

• Current Assignee: Yury Grotov
• Original Assignee: Yury Grotov
• Inventors: Grotov, Yury
• Primary Examiner(s): ALLEN, ANDRE J
• Application Number:
  US14/970,077
• Publication Number:
  US 20160095557A1
• Time in Patent Office: 1,148 Days
• Field of Search: None
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 2560/0252 using ambient temperature
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02225 using the oscillometric method
• CPC Class Codes: A61B 5/0225 the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A61B 5/7271 Specific aspects of physiological measurement analysis A61B5/316, A61B5/349 and A61B5/374 take precedence
• CPC Class Codes: A61B 5/74 Details of notification to user or communication with user or patient indicating measured values G01D7/00; user input means input or output arrangements for computers G06F3/00
• CPC Class Codes: G01L 27/005 Apparatus for calibrating pressure sensors
• CPC Class Codes: G01L 27/02 of indicators

Abstract

A blood pressure monitor, particularly of the type having an inflatable cuff communicating with a pressure sensor and suitable for home use, may be calibrated by applying a sealed canister containing gas at a known pressure to a port so as to apply the known pressure to the pressure sensor, and comparing a pressure signal from the pressure sensor with the known pressure so as to determine a calibration error of the sensor and/or adjust the calibration of the sensor, e.g. by electronically adjusting the sensor. Several canisters may be used to calibrate the sensor across a range of pressures, each canister having a different known pressure. Each canister is preferably ruptured when attached to the port and is not re-usable, and may comprise an identifier such as an electronically readable identifier which is stored in a memory in association with the value of the known pressure within the canister. Temperature sensing means may be provided whereby the pressure reading is adjusted to compensate for temperature, e.g. of the gas released from the canister. The monitor may comprise means for sensing mechanical shock and alerting a user or remote monitoring personnel to provide an indication that recalibration is required.

Claims

1. A blood pressure monitor including a processor configured to carry out a calibration procedure and a blood pressure reading procedure,

and further including:

a means for recording when the calibration procedure is carried out,

a timing means,

a shock sensor,

and an alerting means;

the alerting means being connected to the shock sensor for generating an alert to indicate that a further calibration procedure is required after a mechanical shock or series of shocks has occurred;

the alerting means further being connected to the timing means for generating an alert to indicate that a further calibration procedure is required after a predetermined time period has elapsed since the time or date of a previous calibration procedure recorded by said means for recording;

wherein the blood pressure monitor is configured to transmit an indication of a calibration status of the blood pressure monitor together with the blood pressure reading to a remote location.

2. A blood pressure monitor according to claim 1, wherein the blood pressure monitor is configured to transmit the alert to the remote location.