Abstract: Accordingly, embodiments herein disclose a method for handling a pro-active health diagnostic information by a wearable device (100). The method includes detecting a vital sign of a user. Further, the method includes performing one of: causing to display the vital sign on a display (160), and transmitting the vital sign to a server, and causing to display the vital sign on a display (160) through the server. Further, the method includes handling the pro-active health diagnostic information of the user using the vital sign. In the proposed method, the wearable device (100) can easily get their heath diagnostics run via a patch on a steering wheel or a door handle under 30 seconds. The wearable device (100) provides an ease of commuting with the external device (e.g., vehicle door, or the like). The wearable device (100) supports with already available applications and connectivity protocols.
Claims:CLAIMS
We claim:
1. A method for handling a pro-active health diagnostic information, comprising:
detecting, by a wearable device (100), at least one vital sign of a user;
performing, by the wearable device (100), one of:
causing to display the at least one vital sign on a display (160); and
transmitting the at least one vital sign to a server (200), and causing to display the at least one vital sign on a display through the server (200); and
handling, by the wearable device (100), the pro-active health diagnostic information of the user using the at least one vital sign;
wherein the wearable device (100) is attached with a part of a vehicle.
2. The method as claimed in claim 1, wherein the part of the vehicle comprises a door of the vehicle, a dashboard of the vehicle, a mirror of the vehicle, a steering wheel of the vehicle, a seat of the vehicle, and a hand break of the vehicle.
3. The method as claimed in claim 1, wherein the vital sign comprises at least one of a heartbeat, a glucose level, a blood sugar level, a body fat, a hydration level, an activity level, an oxygen consumption, a blood pressure, a temperature of the body, a respiratory rate, and a mood index.
4. The method as claimed in claim 1, wherein the wearable device (100) comprises:
a microcontroller (110);
a communicator (120); and
a sensor (140), wherein the sensor (140) is attached with at least one body part of a user;
wherein the sensor (140) is configured to:
detect a change in volume of the at least one vital sign, and
transmit the at least one vital sign to the microcontroller (110); and
wherein the microcontroller (110) is configured to:
process the at least one vital sign, and
identify the pro-active health diagnostic information of the user using the at least one vital sign.
5. The method as claimed in claim 4, wherein the wearable device (100) comprises:
wherein the sensor (140) has three pins, wherein the three pins connect with a power supply, a ground of the microcontroller (110), and a signal pin of the microcontroller (110).
6. A wearable device (100) for handling a pro-active health diagnostic information, wherein the wearable device (100) comprises:
a microcontroller (110);
a communicator (120); and
a sensor (140), wherein the sensor (140) is attached with at least one body part of a user;
wherein the sensor (140) is configured to:
detect a change in volume of the at least one vital sign;
transmit the at least one vital sign to the microcontroller (110);
wherein the microcontroller (110) is configured to:
process the at least one vital sign; and
identify the pro-active health diagnostic information of the user using the at least one vital sign.
wherein the wearable device (100) is attached with a part of a vehicle
7. The wearable device (100) as claimed in claim 6, wherein the wearable device (100) comprises:
wherein the sensor (140) has three pins, wherein the three pins connect with a power supply, a ground of the microcontroller (110), and a signal pin of the microcontroller (110).
8. The wearable device (100) as claimed in claim 6, wherein the part of the vehicle comprises a door of the vehicle, a dashboard of the vehicle, a mirror of the vehicle, a steering wheel of the vehicle, a seat of the vehicle, and a hand break of the vehicle.
9. The wearable device (100) as claimed in claim 6, wherein the vital sign comprises at least one of a heartbeat, a glucose level, a blood sugar level, a body fat, a hydration level, an activity level, an oxygen consumption, a blood pressure, a temperature of the body, a respiratory rate, and a mood index.
Dated this 17th April, 2021
Signatures:
Name of the Signatory: Yasir Arafath
Patent Agent No- 3798
, Description:FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules, 2005
COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)
TITLE OF THE INVENTION
“Method and wearable device for handling pro-active health diagnostic information”
APPLICANT:
Name : Lieko Technologies Pvt Ltd
Nationality : India
Address : 401 B, Surubhi Enclave, Nagras Road, Pune, Maharashtra, India, 411007
The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:-
FIELD OF INVENTION
[0001] The present disclosure relates to a wearable device, and more specifically related to a method and the wearable device that can be used and implemented across indoors and outdoors as a non-evasive for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics of a user.
BACKGROUND OF INVENTION
[0002] In general, various wearable device used for handling pro-active health diagnostics data. In existing methods and systems, the method for controlling bleeding from blood vessels that may be damaged as a result of trauma or impact with an object, such as a bullet or shrapnel. The device may be wearable by a user and include one or more components, such as wound sealant and multiple inflatable balloons/bladders. The device may be integrated into a garment, e.g., a vest, jacket, trousers, or full body suit. Once triggered (automatically or manually), the device may be used to deliver wound sealant to a wound site and/or pressure to the wound site by selective inflation of one or more balloons over exsanguinating blood vessels that may be damaged, thereby stopping or minimizing the bleeding. Alternatively, or in addition, the device may be used to stabilize a wounded wearer for, e.g., transportation purposes, or to provide buoyancy. Devices of the invention may also be used as a blood pressure monitor, as a massaging device, and as a breast pump. Devices and methods of the invention may also be used for repairing or stabilizing machines, such as vehicles (e.g., automobiles and boats).
[0003] In another existing methods and systems, an electronic device including a frame configured to be worn on the head of a user is disclosed. The frame can include a bridge configured to be supported on the nose of the user and a brow portion coupled to and extending away from the bridge and configured to be positioned over a side of a brow of the user. The frame can further include an arm coupled to the brow portion and extending to a free end. The device can also include a transparent display affixed to the frame adjacent the brow portion and an input affixed to the frame and configured for receiving from the user an input associated with a function. Information related to the function can be presentable on the display.
[0004] In another existing methods and systems, wearable devices attached or applied to limbs, body, head or other body extremities but also applicable to implanted or physiologically attachable systems. These systems have a means of enabling diagnostic or prognostic monitoring applicable to monitoring relevant parameters and corresponding analysis determination and characterization applicable to the onset or detection of events or health conditions of interest. One application relates to sleep monitoring and associate EEG sensors.
[0005] But, no methods and systems are addressing the health diagnostics like an “in care” “in home” or “in place” health check-up solution in a simple and convenient way. Thus, there is a need for a method and wearable device that can be used and implemented across indoors and outdoors as a non-evasive for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics in a simple and convenient way.
OBJECT OF INVENTION
[0006] The principal object of the embodiments herein is to provide a method and a wearable device that can be used and implemented across indoors and outdoors as a non-evasive for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics. In the proposed method, the wearable device can easily get their heath diagnostics run via a patch on a steering wheel or a door handle under 30 seconds. The wearable device provides an ease of commuting with the external device (e.g., vehicle door, or the like). The wearable device supports with already available applications and connectivity protocols. The wearable device does not need to charge and has a battery plugged in. The wearable device provides an elaborate connectivity with back end applications with health eco system in a secure way.
SUMMARY
[0007] Accordingly, embodiments herein disclose a method for handling a pro-active health diagnostic information. The method includes detecting, by a wearable device, a vital sign of a user. Further, the method includes performing, by the wearable device, one of: causing to display the vital sign on a display, and transmitting the vital sign to a server, and causing to display the vital sign on a display through the server. Further, the method includes handling, by the wearable device, the pro-active health diagnostic information of the user using the at least one vital sign. wherein the wearable device is attached with a part of a vehicle
[0008] In an embodiment, the part of the vehicle comprises a door of the vehicle, a dashboard of the vehicle, a mirror of the vehicle, a steering wheel of the vehicle, a seat of the vehicle, and a hand break of the vehicle.
[0009] In an embodiment, the vital sign comprises at least one of a heartbeat, a glucose level, a blood sugar level, a body fat, a hydration level, an activity level, an oxygen consumption, a blood pressure, a temperature of the body, a respiratory rate, and a mood index.
[0010] In an embodiment, the wearable device includes a microcontroller, a communicator, and a sensor. The sensor is attached with a body part of a user. The sensor is configured to detect a change in volume of the vital sign and transmit the vital signal to the microcontroller. The microcontroller is configured to process the vital signal and identify the pro-active health diagnostic information of the user using the vital sign.
[0011] In an embodiment, the wearable device includes pulse sensor has three pins, wherein the three pins connect with a power supply, a ground of the microcontroller, and a signal pin of the microcontroller.
BRIEF DESCRIPTION OF FIGURES
[0012] The method and wearable device are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0013] FIG. 1a is a block diagram of a wearable device for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein;
[0014] FIG. 1b is an overview of a system for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein;
[0015] FIG. 2 is a flow chart illustrating a method for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein;
[0016] FIG. 3 is an example illustration in which a car steering wheel welcrow sensor patch is depicted, according to an embodiment as disclosed herein;
[0017] FIG. 4 is an example illustration in which a car handle sensor patch is depicted, according to an embodiment as disclosed herein;
[0018] FIG. 5 is an example illustration in which heart beat monitoring using IoT devices and sensors are depicted, according to an embodiment as disclosed herein;
[0019] FIG. 6 is an example illustration in which an arduino chip set is depicted, according to an embodiment as disclosed herein;
[0020] FIG. 7 is an example illustration in which a pulse sensor with arduino chip set are depicted, according to an embodiment as disclosed herein;
[0021] FIG. 8 is an example circuit diagram of a thingspeak setup, according to an embodiment as disclosed herein; and
[0022] FIG. 9 is an example working solution, according to an embodiment as disclosed herein.
DETAILED DESCRIPTION OF INVENTION
[0023] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. Also, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments. The term “or” as used herein, refers to a non-exclusive or, unless otherwise indicated. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein can be practiced and to further enable those skilled in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0024] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the embodiments as described herein. An example how IoT can be used to achieve such a product with ease is below.
[0025] As is traditional in the field, embodiments may be described and illustrated in terms of blocks which carry out a described function or functions. These blocks, which may be referred to herein as units or modules or the like, are physically implemented by analog or digital circuits such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits, or the like, and may optionally be driven by firmware and software. The circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like. The circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform other functions of the block. Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the invention. Likewise, the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the invention.
[0026] The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any alterations, equivalents and substitutes in addition to those which are particularly set out in the accompanying drawings. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are generally only used to distinguish one element from another.
[0027] Accordingly embodiments herein achieve a method for handling a pro-active health diagnostic information. The method includes detecting, by a wearable device, a vital sign of a user. Further, the method includes performing, by the wearable device, one of: causing to display the vital sign on a display, and transmitting the vital sign to a server, and causing to display the vital sign on a display through the server. Further, the method includes handling, by the wearable device, the pro-active health diagnostic information of the user using the at least one vital sign.
[0028] Unlike conventional methods and system, method and a wearable device that can be used and implemented across indoors and outdoors as a non-evasive for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics. In the proposed method, the wearable device can easily get their heath diagnostics run via a patch on a steering wheel or a door handle under 30 seconds. The wearable device provides an ease of commuting with the external device (e.g., vehicle door, or the like). The wearable device supports with already available applications and connectivity protocols. The wearable device does not need to charge and has a battery plugged in. The wearable device provides an elaborate connectivity with back end applications with health eco system in a secure way.
[0029] Referring now to the drawings, and more particularly to FIGS. 1a through 9, there are shown preferred embodiments.
[0030] FIG. 1a is a block diagram of a wearable device (100) for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein. The wearable device (100) can be, for example, but not limited to a smart patch, a smart ring, a smart watch, or the like.
[0031] In an embodiment, the wearable device (100) includes a microcontroller (110), a communicator (120), a memory (130), a sensor (140), a health diagnostic information handling controller (150), and a display (160). The microcontroller (110) is coupled with the communicator (120), the memory (130), the sensor (140), the health diagnostic information handling controller (150), and the display (160). The sensor (140) can be a pulse sensor. The display (160) can be a LED based display and a LCD based display. In another embodiment, the wearable device (100) does not have a display.
[0032] The sensor (140) is attached with a body part of a user. The sensor (140) is configured to detect a change in volume of the vital sign and transmit the vital signal to the microcontroller (110) and the health diagnostic information handling controller (150). The vital sign can be, for example, but not limited to a heartbeat, a glucose level, blood sugar level, a body fat, a hydration level, an activity level, an oxygen consumption, blood pressure, temperature of the body, respiratory rate, a mood index, or the like. The microcontroller (110) and the health diagnostic information handling controller (150) are configured to process the vital signal and identify the pro-active health diagnostic information of the user using the vital sign. The detailed operations of the wearable device (100) is explained in the FIG. 3 to FIG. 9.
[0033] Further, the wearable device (100) includes the sensor (140) comprising three pins, wherein the three pins connect with a power supply, a ground of the microcontroller (110), and a signal pin of the microcontroller (110).
[0034] The microcontroller (110) is configured to execute instructions stored in the memory (130) and to perform various processes. The communicator (120) is configured for communicating internally between internal hardware components and with external devices via one or more networks.
[0035] The memory (130) stores instructions to be executed by the microcontroller (110). The memory (130) may include non-volatile storage elements. Examples of such non-volatile storage elements may include magnetic hard discs, optical discs, floppy discs, flash memories, or forms of electrically programmable memories (EPROM) or electrically erasable and programmable (EEPROM) memories. In addition, the memory (130) may, in some examples, be considered a non-transitory storage medium. The term “non-transitory” may indicate that the storage medium is not embodied in a carrier wave or a propagated signal. However, the term “non-transitory” should not be interpreted that the memory (130) is non-movable. In certain examples, a non-transitory storage medium may store data that can, over time, change (e.g., in Random Access Memory (RAM) or cache).
[0036] Although the FIG. 1 shows various hardware components of the wearable device (100) but it is to be understood that other embodiments are not limited thereon. In other embodiments, the wearable device (100) may include less or more number of components. Further, the labels or names of the components are used only for illustrative purpose and does not limit the scope of the invention. One or more components can be combined together to perform same or substantially similar function for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics
[0037] FIG. 1b is an overview of a system (1000) for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein. The system (300) includes the wearable device (100) and a server (200). The operations and functions of the wearable device (100) are explained in connection with the FIG. 1.
[0038] FIG. 2 is a flow chart (S200) illustrating a method for sensing, capturing, collecting, notifying and storing data related to pro-active health diagnostics, according to an embodiment as disclosed herein. The operations (S202-S208) are performed by the microcontroller (110) and the health diagnostic information handling controller (150). At S202, the method includes detecting the vital sign of the user. At S204, the method includes displaying the vital sign on the display (150). At S206, the method includes transmitting the vital sign to the server (200), and displaying the vital sign on the display (160) through the server (200). At S208, the method includes handling the pro-active health diagnostic information of the user using the vital sign.
[0039] FIG. 3 is an example illustration in which a car steering wheel welcrow sensor patch (300) is depicted, according to an embodiment as disclosed herein. The welcrow sensor patch (300) is attached in the car steering wheel and supports the Bluetooth connectivity. The welcrow sensor patch (300) shares the health data a mobile phone or a smart phone.
[0040] FIG. 4 is an example illustration in which a car handle sensor patch (400) is depicted, according to an embodiment as disclosed herein. The sensor patch (400) is attached with the car handle.
[0041] FIG. 5 is an example illustration (500) in which heart beat monitoring using IoT devices and sensors are depicted, according to an embodiment as disclosed herein. In the proposed method, the wearable device operates as a heart-beat detection and monitoring system using Arduino that will detect the heart beat using the pulse sensor and will show the readings in Beats per Minute (BPM) on a LCD connected to it. The wearable device will also send the readings to the server (200) (e.g., ThingSpeak server) using the Wi-Fi module ESP8266, so that heart beats can be monitored from anywhere in the world over the internet. The ThingSpeak server displays the data online and the user of the wearable device (100) can access the data from ThingSpeak server at any time and at any place.
[0042] FIG. 6 is an example illustration (600) in which an arduino chip set is depicted, according to an embodiment as disclosed herein. First of all we will connect the ESP8266 with the Arduino. ESP8266 runs on 3.3V and if you will give it 5V from the Arduino then it won’t work properly and it may get damage. Connect the VCC and the CH_PD to the 3.3V pin of Arduino. The RX pin of ESP8266 works on 3.3V and it will not communicate with the Arduino when we will connect it directly to the Arduino. So, we will have to make a voltage divider for it which will convert the 5V into 3.3V. This can be done by connecting three resistors in series like we did in the circuit. Connect the TX pin of the ESP8266 to the pin 9 of the Arduino and the RX pin of the ESP8266 to the pin 10 of Arduino through the resistors.
[0043] ESP8266 Wi-Fi module gives the projects access to Wi-Fi or internet. The ESP8266 Wi-Fi module can communicate with any microcontroller and it is the most leading devices in the IOT platform. The Pulse Sensor is connected with the Arduino. The connections of the pulse sensor are very easy. Pulse sensor has three pins. Connect 5V and the ground pin of the pulse sensor to the 5V and the ground of the Arduino and the signal pin to the A0 of Arduino.
[0044] FIG. 7 is an example illustration (700) in which the pulse sensor with arduino chip set are depicted, according to an embodiment as disclosed herein. A LED is connected to pin 13 of Arduino. The user of the wearable device do not have to connect a resistor with because the Arduino has built in resistor at pin 13. The LCD is connected with the Arduino. The connections of the LCD are as follows:
1. Connect pin 1 (VEE) to the ground.
2. Connect pin 2 (VDD or VCC) to the 5V.
3. Connect pin 3 (V0) to the middle pin of the 10K potentiometer and connect the other two ends of the potentiometer to the VCC and the GND. The potentiometer is used to control the screen contrast of the LCD. Potentiometer of values other than 10K will work too.
4. Connect pin 4 (RS) to the pin 12 of the Arduino.
5. Connect pin 5 (Read/Write) to the ground of Arduino. This pin is not often used so we will connect it to the ground.
6. Connect pin 6 (E) to the pin 11 of the Arduino. The RS and E pin are the control pins which are used to send data and characters.
7. The following four pins are data pins which are used to communicate with the Arduino.
8. Connect pin 11 (D4) to pin 5 of Arduino.
9. Connect pin 12 (D5) to pin 4 of Arduino.
10. Connect pin 13 (D6) to pin 3 of Arduino.
11. Connect pin 14 (D7) to pin 2 of Arduino.
12. Connect pin 15 to the VCC through the 220 ohm resistor. The resistor will be used to set the back light brightness. Larger values will make the back light much darker.
13. Connect pin 16 to the Ground.
[0045] FIG. 8 is an example circuit diagram (800) of a thingspeak setup, according to an embodiment as disclosed herein. By using ThingSpeak site, the user of the wearable device (100) can monitor the data and control the system (1000) over the Internet, using the Channels and webpages provided by ThingSpeak. ThingSpeak ‘Collects’ the data from the sensors, ‘Analyze and Visualize’ the data and ‘Acts’ by triggering a reaction.
[0046] The pulse sensor is attached to any organ of body where the pulse sensor can detect the pulse easily like finger. Then the pulse sensor will measure the change in volume of blood, which occurs when every time heart pumps blood in the body. This change in volume of blood causes a change in the light intensity through that organ. The Arduino will then convert this change into the heart beat per minute (BPM). The LED connected at pin 13 will also blink according the Heart Beat.
[0047] The ESP8266 will then communicate with the Arduino and will send the data to ThingSpeak. The ESP8266 will connect the network of your router that you will provide in the code and will send the data of the sensor online. This data on the ThingSpeak will be shown in a Graph form showing the past readings too and can be accessed from anywhere over internet. The LCD connected will also show you the BPM.
[0048] FIG. 9 is an example working solution (900), according to an embodiment as disclosed herein.
| # | Name | Date |
|---|---|---|
| 1 | 202121017858-STATEMENT OF UNDERTAKING (FORM 3) [17-04-2021(online)].pdf | 2021-04-17 |
| 2 | 202121017858-OTHERS [17-04-2021(online)].pdf | 2021-04-17 |
| 3 | 202121017858-FORM-26 [17-04-2021(online)].pdf | 2021-04-17 |
| 4 | 202121017858-FORM FOR STARTUP [17-04-2021(online)].pdf | 2021-04-17 |
| 5 | 202121017858-FORM FOR SMALL ENTITY(FORM-28) [17-04-2021(online)].pdf | 2021-04-17 |
| 6 | 202121017858-FORM 1 [17-04-2021(online)].pdf | 2021-04-17 |
| 7 | 202121017858-EVIDENCE FOR REGISTRATION UNDER SSI(FORM-28) [17-04-2021(online)].pdf | 2021-04-17 |
| 8 | 202121017858-DRAWINGS [17-04-2021(online)].pdf | 2021-04-17 |
| 9 | 202121017858-DECLARATION OF INVENTORSHIP (FORM 5) [17-04-2021(online)].pdf | 2021-04-17 |
| 10 | 202121017858-COMPLETE SPECIFICATION [17-04-2021(online)].pdf | 2021-04-17 |
| 11 | 202121017858-FORM 18 [28-04-2021(online)].pdf | 2021-04-28 |
| 12 | 202121017858-RELEVANT DOCUMENTS [03-06-2021(online)].pdf | 2021-06-03 |
| 13 | 202121017858-MARKED COPIES OF AMENDEMENTS [03-06-2021(online)].pdf | 2021-06-03 |
| 14 | 202121017858-FORM 13 [03-06-2021(online)].pdf | 2021-06-03 |
| 15 | 202121017858-AMMENDED DOCUMENTS [03-06-2021(online)].pdf | 2021-06-03 |
| 16 | Abstract1.jpg | 2021-10-18 |
| 17 | 202121017858-FER.pdf | 2022-11-11 |
| 18 | 202121017858-AbandonedLetter.pdf | 2024-02-28 |
| 1 | 202121017858searchstrategyE_03-11-2022.pdf |