Congenital heart disease monitor

• US 10,588,518 B2
• Filed: 06/27/2017
• Issued: 03/17/2020
• Est. Priority Date: 09/20/2006
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Kiani, Massi Joe E.
• Primary Examiner(s): Winakur, Eric F
• Assistant Examiner(s): Liu, Chu Chuan
• Application Number:
  US15/634,502
• Publication Number:
  US 20170360310A1
• Time in Patent Office: 994 Days
• CPC Class Codes: A61B 2560/0276 Determining malfunction
• 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 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6829 Foot or ankle
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

A congenital heart disease monitor utilizes a sensor capable of emitting multiple wavelengths of optical radiation into a tissue site and detecting the optical radiation after attenuation by pulsatile blood flowing within the tissue site. A patient monitor is capable of receiving a sensor signal corresponding to the detected optical radiation and calculating at least one physiological parameter in response. The physiological parameter is measured at a baseline site and a comparison site and a difference in these measurements is calculated. A potential congenital heart disease condition in indicated according to the measured physiological parameter at each of the sites or the calculated difference in the measured physiological parameter between the sites or both.

Claims

1. An electronic monitor for detection of congenital heart disease, the electronic monitor comprising one or more hardware processors configured to:

determine a first oxygen saturation corresponding to a first measurement site on a patient;

determine a second oxygen saturation corresponding to a second measurement site on the patient;

determine a difference between the first oxygen saturation and the second oxygen saturation;

determine a rate of change of the difference between the first oxygen saturation and the second oxygen saturation; and

generate an indicator for display, wherein the indicator is generated based on an application of;

same channel rules on the first saturation value at the first measurement site or the second saturation value at the second measurement site, and

cross-channel rules on the difference and the rate of change of the difference, and

wherein the indicator corresponds to the detection of congenital heart disease.

2. The electronic monitor of claim 1, further comprising a display to display the indicator.

3. The electronic monitor of claim 1, further comprising a sensor configured to emit optical radiation having a plurality of wavelengths into measurement sites and to detect the optical radiation after attenuation by pulsatile blood flowing within the measurement sites.

4. The electronic monitor of claim 1, wherein the indicator comprises a first indicator and a second indicator, wherein the first indicator represents a higher risk of congenital heart disease than the second indicator.

5. The electronic monitor of claim 4, wherein a first color of the first indicator is different than a second color of the second indicator.

6. The electronic monitor of claim 1, wherein the one or more hardware processors are further configured to compare the first oxygen saturation corresponding to the first channel with a saturation limit threshold.

7. The electronic monitor of claim 1, wherein the one or more hardware processors are further configured to compare the second oxygen saturation corresponding to the second channel with the saturation limit threshold.

8. The electronic monitor of claim 1, wherein the one or more hardware processors are further configured to compare the difference of oxygen saturation with a cross channel saturation limit threshold.

9. The electronic monitor of claim 1, wherein the one or more hardware processors are further configured to compare the rate of change of the difference of oxygen saturation over time between the first channel and the second channel with a cross channel saturation trend threshold.

10. An electronic monitoring method for detection of congenital heart disease, the electronic monitoring method comprising:

determining a first oxygen saturation corresponding to a first measurement site on a patient;

determining a second oxygen saturation corresponding to a second measurement site on the patient;

determining a difference between the first oxygen saturation and the second oxygen saturation;

determining a rate of change of the difference between the first oxygen saturation and the second oxygen saturation; and

generating an indicator for display, wherein the indicator is generated based on an application of;

same channel rules on the first saturation value at the first measurement site or the second saturation value at the second measurement site; and

cross-channel rules on the difference and the rate of change of the difference, and

wherein the indicator corresponds to the detection of congenital heart disease.

11. The electronic monitoring method of claim 10, further comprising displaying the indicator.

12. The electronic monitoring method of claim 10, further comprising emitting optical radiation having a plurality of wavelengths into measurement sites and detecting the optical radiation after attenuation by pulsatile blood flowing within the measurement sites.

13. The electronic monitoring method of claim 10, wherein the indicator comprises a first indicator and a second indicator, wherein the first indicator represents a higher risk of congenital heart disease than the second indicator.

14. The electronic monitoring method of claim 13, wherein a first color of the first indicator is different than a second color of the second indicator.

15. The electronic monitoring method of claim 10, further comprising comparing the first oxygen saturation corresponding to the first channel with a saturation limit threshold.

16. The electronic monitoring method of claim 10, further comprising comparing the second oxygen saturation corresponding to the second channel with the saturation limit threshold.

17. The electronic monitoring method of claim 10, further comprising comparing the difference of oxygen saturation with a cross channel saturation limit threshold.

18. The electronic monitoring method of claim 10, further comprising comparing the rate of change of the difference of oxygen saturation over time between the first channel and the second channel with a cross channel saturation trend threshold.