WIRELESS PATIENT MONITORING DEVICE

• US 20190231241A1
• Filed: 11/06/2018
• Published: 08/01/2019
• Est. Priority Date: 02/09/2012
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Al-Ali, Ammar, Kinast, Eric Karl, Muhsin, Bilal, DeJong, Chad A.
• Granted Patent: US 11,083,397 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/0266 for monitoring or limiting apparatus function
• CPC Class Codes: A61B 2560/0475 Special features of memory means, e.g. removable memory cards
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0261 using optical means, e.g. infrared light
• CPC Class Codes: A61B 5/0295 using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61B 5/725 using specific filters therefor, e.g. Kalman or adaptive filters A61B5/316 take precedence
• CPC Class Codes: A61B 5/7405 using sound
• CPC Class Codes: A61B 5/7425 Displaying combinations of multiple images regardless of image source, e.g. displaying a reference anatomical image with a live image geometric transforms for image registration G06T3/14; enhancement using image fusion G06T5/50; algorithms for registration of images G06T7/30
• CPC Class Codes: A61B 5/7445 Display arrangements, e.g. multiple display units
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: G16H 10/60 : for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 40/20 : for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• CPC Class Codes: G16H 40/63 : for local operation

Abstract

A device for obtaining physiological information of a medical patient and wirelessly transmitting the obtained physiological information to a wireless receiver.

Claims

1. A wireless patient monitoring system configured to improve battery performance, the wireless patient monitoring system comprising:

a battery;

an optical sensor configured to obtain photoplethysmographs, the optical sensor including at least one emitter configured to emit light and at least one detector configured to detect said light after attenuation by tissue of a user, said photoplethysmographs responsive to said detected light;

a sensor signal processor configured to at least partially process said photoplethysmographs received from the optical sensor; and

a wireless transmitter configured to wirelessly transmit said at least partially processed photoplethysmographs to a second device including a display, a user interface and a device signal processor, the second device configured to receive said at least partially processed photoplethysmographs, the device signal processor configured to further process said at least partially processed photoplethysmographs, said further processing includes determining one or more physiological measurements responsive to said at least partially processed photoplethysmographs, the second device further configured to display said one or more physiological measurements on said display.

2. The system of claim 1, wherein the sensor signal processor is configured to perform bandpass filtering.

3. The system of claim 1, wherein the sensor signal processor is configured to perform signal conditioning.

4. The system of claim 1, wherein the one or more physiological measurements comprises an oxygen saturation, a pulse rate, and/or a perfusion index.

5. The system of claim 1, wherein the wireless transmitter is configured to wirelessly transmit said at least partially processed photoplethysmographs over Bluetooth.

6. The system of claim 1, further comprising an audible indicator configured to be activated when the physiological measurements are irregular.

7. The system of claim 1, wherein the optical sensor is configured to be coupled to a fingertip.

8. The system of claim 1, further comprising an adhesive for attaching the optical sensor to a user'"'"'s skin.

9. The system of claim 1, further comprising a band configured to secure the system to the user.

10. A system comprising:

a sensor assembly comprising;

a battery;

an optical sensor configured to obtain photoplethysmographs, the optical sensor including at least one emitter configured to emit light and at least one detector configured to detect said light after attenuation by tissue of a user, said photoplethysmographs responsive to said detected light;

a sensor signal processor configured to at least partially process said photoplethysmographs received from the optical sensor;

a wireless transmitter configured to wirelessly transmit said at least partially processed photoplethysmographs to a second device; and

the second device comprising a processor, memory, and display, the memory storing computer-executable instructions that, when executed, cause the second device to;

further process said at least partially processed photoplethysmographs received from the sensor assembly to determine one or more physiological measurements responsive to said at least partially processed photoplethysmographs;

display a numerical value of said physiological measurements on the display; and

display a waveform representative of said physiological measurements on the display.

11. The system of claim 10, wherein the sensor signal processor is configured to perform bandpass filtering.

12. The system of claim 10, wherein the sensor signal processor is configured to perform signal conditioning.

13. The system of claim 10, wherein, when executed, the computer-executable instructions cause the second device to display a trend in said physiological measurements on the display.

14. The system of claim 10, wherein, when executed, the computer-executable instructions cause the second device to assemble a database including said physiological measurements.

15. The system of claim 10, wherein, when executed, the computer-executable instructions cause the second device to wirelessly transmit said physiological measurements via email or text message.

16. A method of wirelessly monitoring physiological information, the method comprising:

securing an optical sensor to a user'"'"'s skin, the optical sensor including at least one emitter configured to emit light and at least one detector configured to detect said light after attenuation by tissue of a user;

collecting photoplethysmographs from the optical sensor;

at least partially processing said photoplethysmographs received from the optical sensor; and

wirelessly transmitting said at least partially processed photoplethysmographs to a second device; and

further processing said at least partially processed photoplethysmographs using the second device to determine one or more physiological measurements responsive to said at least partially processed photoplethysmographs.

17. The method of claim 16, further comprising displaying a numerical value of said physiological measurements on a display device.

18. The method of claim 16, further comprising displaying a waveform representative of said physiological measurements on a display device.

19. The method of claim 16, further comprising displaying a trend in said physiological measurements on a display device.

20. The method of claim 16, wherein collecting photoplethysmographs comprises continuously collecting said photoplethysmographs over a period of time.