Smart wearable device for health watch

• US 10,194,862 B2
• Filed: 09/29/2016
• Issued: 02/05/2019
• Est. Priority Date: 12/28/2015
• Status: Active Grant

• Current Assignee: Sensesemi Technologies Private Limited
• Original Assignee: Sensesemi Technologies Private Limited
• Inventors: Chakravarthi, Veena S, Dodagoudar, Praveen, Mundkur, Vishweshwara
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): KUO, JONATHAN T
• Application Number:
  US15/279,543
• Publication Number:
  US 20180085058A1
• Time in Patent Office: 859 Days
• Field of Search: 36167901-67903, 34053911-53913
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• 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 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/14517 for sweat
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150862 intermediate range, e.g. within room or building
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61B 5/339 Displays specially adapted therefor
• CPC Class Codes: A61B 5/352 Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
• CPC Class Codes: A61B 5/4845 : Toxicology, e.g. by detection of alcohol, drug or toxic products A61B5/4848 takes precedence
• CPC Class Codes: A61B 5/681 : Wristwatch-type devices
• CPC Class Codes: A61B 5/7246 : using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7475 : User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: G16H 50/30 : for calculating health indices; for individual health risk assessment

Abstract

A wearable device comprising a display dial configured to display various health parameters, a wristband assisting the device to wear on wrist, an eject-able tray comprising a micro-chip, a first spring coupled to the eject-able tray, at least one latch provided with a second spring to hold the eject-able tray within the device by compressing the first spring, and a health monitoring unit provided with multiple sensors to determine various health parameters, wherein compression of the second spring results in the latch to release the eject-able tray which in turn relaxes the compressed first spring to eject the micro-chip outside the device for collecting blood samples. The microchip comprises at least one micro-needle and an enzyme test strip for collecting and analyzing the blood samples. The health monitoring unit comprises at least three conductive sense pads which are collectively operable to provide electrocardiograph (ECG) information.

Claims

1. A wearable device (201) comprising:

a central unit (202) similar to a wrist watch;

a flexible wristband (204) attached to the central unit (202) wherein the central unit and the flexible wristband together forming the wearable device for wearing on a wrist;

a first, a second and a third sensor pads (208A, 208B and 208C) mounted on the flexible wristband (204) wherein the first and the second sensor pads (208A and 208B) are mounted on the inner side of the flexible wristband (204) configured to touch a skin part on the wrist to collect a first and a second electrical signals from the respective locations when the wearable device (201) is tied around the wrist and the third sensor pad (208C) is mounted on outer surface of the flexible wrist-band (204) and configured to collect a third electrical signal when a finger is placed over the third sensor pad (208C);

an ejectable tray (1802) housed within the central unit (202);

a set of micro needle (170A) and enzyme test strip pairs (170B) housed in the ejectable tray (1802);

a fourth sensor pad (210) mounted on the outer surface of the flexible wrist-band (204) closer than the first and second sensor pads to the third sensor pad (208C) wherein the fourth sensor pad (210) operative as Photoplethysmogram (PPG) sensor providing a fourth electrical signal;

a spring and latch mechanism (1801 through 1806) deployed within the central unit (202) comprising a first spring (1805 or 1806) and a latch (1803 or 1804) to hold the ejectable tray (1802) within the central unit (202) and a second spring (1801), when activated, releases the latch (1803 and 1804) causing the ejectable tray (1802) to protrude outside of the central unit (202) for accessing at least one micro needle (170A) and enzyme test strip pair (170B);

a processor (314) mounted within the central unit (202) to process the first, the second, the third and the fourth electrical signals respectively received from the first, second, third, fourth sensor pads (208A, 208B, 208C and 210) and a fifth electrical signal from the enzyme test strip (170B), where-in the first, second, third, fourth sensor pads (208A, 208B, 208C and 210) and the enzyme test strip (170B) electrically coupled to the processor (314); and

a display device (320) integrated within the central unit (202) to display a plurality of health parameters determined from the first, the second, the third, the fourth and the fifth electrical signals.

2. The wearable device of claim 1, wherein the processor (314) generates an electrocardiogram from the first, the second and the third electrical signal and determines a blood glucose level from the fifth electrical signal.

3. The wearable device of claim 2, wherein the processor (314) determines a blood pressure from the first, the second, the third, and the fourth electrical signal.

4. The wearable device of claim 3, wherein the processor (314) determines the time difference between a first peak in the electrocardiogram determined by capturing signals from the first, second and third sensor pads (208A through 208C) and a corresponding peak in the Photoplethysmogram captured by the fourth sensor pad (210).

5. The wearable device of claim 4, wherein the processor (314) selectively displays, a heart rate determined from the electrocardiogram, a blood oxygen level determined from the Photoplethysmogram, the blood glucose level, the blood pressure, on the display device.

6. The wearable device of claim 5, further comprising a USB interface connector attached to the flexible wristband and electrically coupled to the processor for external interface such that the USB connector operates as a buckle to the wristband.

7. The wearable device of claim 5, wherein the central unit (202) further comprises a memory (310) configured to store the health parameters including the heart rate, the electrocardiogram, the blood oxygen level, the Photoplethysmogram, the blood glucose level and the blood pressure.

8. The wearable device of claim 5, wherein the central unit (202) further comprises a first button to activate the second spring, a second button to select the health parameter for display, and a third button to configure the central unit.

9. The wearable device of claim 5, wherein the central unit (202) further comprises a wireless communication transceiver to transfer the data stored in the memory (310) to a desired destination device.

10. The wearable device of claim 3, further comprising an inflatable inner flap coupled to a micro pump and a solenoid facilitating inflation and deflation of the inner flap for measuring blood pressure.