SpO2 tone modulation with audible lower clamp value

Patent metadata

Field	Value
Publication number	US-10687763-B2
Application number	US-201414895505-A
Country	US
Kind code	B2
Filing date	Jun 13, 2014
Priority date	Jun 24, 2013
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A patient monitor device includes one or more sensors which measure physiological parameters of a patient, a controller which controls an audio source to generate an audible tone and adjust the pitch or frequency of the audible tone to indicate the measured physiological parameter according to a mapping scheme, the audio source which generates the audible tone, and an audio output device which outputs the audible tone. The mapping scheme clamping a frequency of the audible tone after reaching a predetermined threshold.

First claim

The invention claimed is:

1. A patient monitoring device, the device comprising:
one or more sensors configured to measure a blood oxygen concentration of a patient;
an audio source;
a controller configured to control the audio source to generate an audible tone and adjust a frequency of the audible tone to indicate the measured blood oxygen concentration according to a non-linear mapping scheme that corresponds to an octave-based musical scale in which an octave is double a frequency of the tone;
an audio output device which outputs the audible tone;
wherein the mapping scheme clamps the frequency of the audible tone after reaching a predetermined threshold; and
wherein the controller is further configured to, for each one percent change in the blood oxygen concentration, step the frequency of the audible tone in accordance with the non-linear mapping scheme by one half tone or one full tone of the octave-based musical scale.

2. The device according to claim 1 , wherein the audible tone includes an audible tone for each characteristic point in a cardiac cycle.

3. The device according to claim 1 , wherein the predetermined threshold is two octaves below a peak frequency.

4. The device according to claim 1 , wherein the controller modifies the audible tone after reaching the predetermined threshold.

5. The device according to claim 1 , wherein the controller transposes the audible tone based on a type of the audio output device.

6. The device according to claim 1 , wherein the controller is further configured to:
transpose the audible tone based on a type of the audio output device.

7. A system comprising:
a first patient monitoring device comprising a patient monitoring device according to claim 1 ; and
a second patient monitoring device comprising a patient monitoring device according to claim 1 ;
wherein the controller of the first patient monitoring device is configured to transpose the audible tone of the first patent monitoring device to operate in a different octave than the audible tone of the second patient monitoring device.

8. A method for tone modulation with an audible lower clamp value, the method comprising:
measuring a blood oxygen concentration of a patient with one or more sensors;
generating an audible tone and adjusting a frequency of the audible tone to indicate the measured blood oxygen concentration according to a non-linear mapping scheme that corresponds to an octave-based musical scale in which an octave is double a frequency of the tone, wherein the non-linear mapping scheme clamps the frequency of the audible tone after reaching a predetermined threshold; and
stepping the frequency of the audible tone in full-tone or half-tone increments based on the blood oxygen concentration;
wherein for each one percent change in the blood oxygen concentration the frequency is changed by one half-tone or one full-tone of the octave-based musical scale.

9. The method according to claim 8 , wherein the audible tone includes an audible tone for each characteristic point in a cardiac cycle.

10. The method according to claim 8 , wherein the predetermined threshold is two octaves below a peak frequency.

11. The method according to claim 8 , further including:
modifying the audible tone after reaching the predetermined threshold.

12. The method according to claim 8 , further including:
transposing the audible tone based on a type of audio output device.

Assignees

• Koninklijke Philips Nv

Inventors

• Greiner Harald
• Meier Wilhelm
• Enslin Frank
• Neumann Rolf

Classifications

• A61B5/14542

  for measuring blood gases (A61B5/14551 takes precedence) · CPC title

• A61B5/7415 Primary

  Sound rendering of measured values, e.g. by pitch or volume variation (A61B5/741 takes precedence) · CPC title

• A61B5/145

  Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value {; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue} (non-radiation detecting or locating of foreign bodies in blood A61B5/06) · CPC title