Integrated pulse condition sensor and wearable pulse diagnosis device
Through the integrated pulse sensor collecting pulse diagnosis data on the doctor's fingers in real time, the problems of inaccurate positioning of the cunguan cube and poor control of floating and subsidence pressure in traditional pulse diagnosis devices are solved, and the accuracy of diagnosis and convenience of use are improved.
Patent Information
- Application Number
- CN202411381591.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional Chinese medicine pulse diagnosis devices have problems such as inaccurate positioning of the cunguan ruler and poor control of floating and sinking pressure, which may cause abnormal pulse diagnosis data, affecting the accuracy of diagnosis, and the device is complex, affecting the doctor's feel and wear.
Design an integrated pulse sensor to integrate flexible pressure sensors and signal conditioning circuits with flexible PCBs, encapsulated silicone into finger covers, worn on doctor's fingers, collect pulse diagnosis status and pulse signals in real time to maintain the feel and feel of Traditional habit of pulsating.
It realizes accurate collection of pulse diagnosis data, avoids the problem of inaccurate positioning of the inch and cube ruler, simplifies the device structure, and improves the accuracy of diagnosis and convenience of use.
Smart Images
Figure CN119279528A_ABST
Abstract
Description
Technical Field
[0001] Observation, auscultation, inquiry and palpation are the four important means of diagnosis in traditional Chinese medicine, among which palpation is an indispensable and extremely important part of the diagnosis process. Traditional Chinese medicine relies entirely on the subjective judgment of the experience of Chinese medicine doctors to diagnose pulse. With the development of digitalization and intelligence of traditional Chinese medicine, pulse diagnosis devices that use sensor technology to sense and obtain pulse information have been developed in recent years. However, the existing technical solutions have problems such as inaccurate positioning of Cun, Guan and Chi, poor control of floating, middle and sinking pressure applied by mechanical or pneumatic means, etc., which may cause abnormal data information collected by the pulse diagnosis device, thus leading to misdiagnosis. At the same time, the pulse diagnosis device affects the doctor's hand feel, does not conform to the doctor's habit of taking the pulse, and the device is too complicated, which limits the doctor's wearing and use. Summary of the invention
[0002] The purpose of the present invention is to provide an integrated pulse sensor and a wearable pulse diagnosis device. The integrated pulse sensor of the present invention places three groups of flexible pressure sensors corresponding to Cun, Guan, and Chi on three finger sleeves of the index finger, middle finger, and ring finger respectively, and integrates the three groups of sensors with a pulse diagnosis signal conditioning circuit and a flexible PCB (printed circuit board), and is encapsulated with silica gel and formed into a finger sleeve shape at the fingertips. The integrated pulse sensor can output pulse diagnosis status signals, Cun, Guan, and Chi pulse signals, and pressure signals of three fingers pressing radial arteries in real time when the doctor feels the pulse. When the doctor wears the wearable pulse diagnosis device using the integrated pulse sensor to feel the pulse, the fusion of manual and sensor pulse feeling can be realized, and the collection of real pulse data can be realized while maintaining the hand feel and traditional pulse feeling habits, which is conducive to improving the accuracy of pulse diagnosis data.
[0003] In order to achieve the above object, the present invention adopts the following technical solutions:
[0004] An integrated pulse sensor comprises a flexible PCB, a flexible pressure sensor, a signal conditioning circuit and a silicone encapsulation formed as a fingertip at the fingertip; the flexible pressure sensor and the signal conditioning circuit are assembled on the flexible PCB, and the electrical connection of all electronic components is realized through the flexible PCB; the silicone encapsulation is used to seal and wrap the flexible PCB and all electronic components, and make each component into an integrated whole; and is used to detect complete information such as pulse diagnosis status, floating, middle and sinking pressure, and inch, guan and chi pulses.
[0005] In some embodiments, the finger cuff is used to wear the integrated pulse sensor on the fingertip, so that the flexible pressure sensor is located at the pulp of the fingertip.
[0006] In some embodiments, the flexible pressure sensor includes an index finger tip sensor, a middle finger tip sensor, and a ring finger tip sensor, which are respectively placed in corresponding fingertip areas of the flexible PCB for detecting Cun, Guan, and Chi pulse signals.
[0007] In some embodiments, the flexible PCB is in the shape of a three-in-one forked finger, and its appearance includes eight areas covering the three fingertips, three finger backs and the back of the hand, namely, the index finger end area, the middle finger end area, the ring finger end area, the index finger back connecting strip area, the middle finger back connecting strip area, the ring finger back connecting strip area, the three-in-one confluence area and the signal output end.
[0008] In some embodiments, the end of the signal output terminal adopts a gold finger design.
[0009] In some embodiments, the signal conditioning circuit includes four sub-modules respectively configured at the nails of the index finger end, the middle finger end, and the ring finger end of the flexible PCB and at the three-in-one confluence area of the flexible PCB.
[0010] In some embodiments, the submodules of the three signal conditioning circuits at the index finger, middle finger, and ring finger have the same circuit structure, including a sensing circuit, a preamplifier, a low-pass amplifier, and a high-pass amplifier, wherein the sensing circuit outputs a pressure sensing signal, which is composed of a resistor divider network consisting of a power supply VCC, a resistor R0, and a flexible pressure sensor Rs, and the resistance value of the flexible pressure sensor Rs changes with the changes in the doctor's finger pressure and the patient's radial artery pulse pressure; the preamplifier is used to amplify the pressure sensing signal and output it to the low-pass amplifier and the high-pass amplifier respectively; the low-pass amplifier is used to perform low-pass filtering on the pressure sensing signal to obtain the finger pressure signal applied by the doctor when taking the floating, middle, and sinking pulse and further amplify it to a suitable amplitude; the high-pass amplifier is used to perform high-pass filtering on the pressure sensing signal to obtain the patient's pulse signal and further amplify it to a suitable amplitude.
[0011] In some embodiments, the submodule of the signal conditioning circuit of the three-in-one junction area of the flexible PCB is used to superimpose the pressure sensing signals of three fingers and compare them with a reference voltage to obtain a pulse diagnosis status signal.
[0012] This embodiment also provides a wearable pulse diagnosis device, comprising any one of the integrated pulse sensors described.
[0013] This embodiment also provides a wearable pulse diagnosis device, which also includes a main body and / or a strap of the device. The main body is placed on the back of the hand or wrist, and is used to receive the output signal of the integrated pulse sensor, including but not limited to power supply, system wake-up management according to the pulse diagnosis status signal, ADC sampling and pulse analysis of pulse signals and finger pressure signals, and communication interaction with a host computer. All or part of the functions.
[0014] The integrated pulse sensor and wearable pulse diagnosis device provided by the present application have beneficial effects including but not limited to:
[0015] First, the integrated pulse sensor of the present invention uses a flexible PCB as a substrate, integrates three groups of flexible pressure sensors of Cun, Guan and Chi, a pulse diagnosis signal conditioning circuit, finger sleeves of the index finger, middle finger and ring finger, and a silicone encapsulation film, and can detect complete information such as pulse diagnosis status, floating, middle and sinking pressures, and pulses of Cun, Guan and Chi; the wearable pulse diagnosis device using the integrated pulse sensor can realize the fusion of manual and sensor pulse diagnosis, which not only avoids the problem of inaccurate positioning of Cun, Guan and Chi, but also maintains the doctor's pulse diagnosis feel and traditional pulse diagnosis habits due to the flexible PCB as the substrate, and can realize the collection of real pulse data.
[0016] Second, the pulse diagnosis device can not only quantify the pressure of floating, middle and sinking when taking the pulse by famous old Chinese medicine doctors, but also guide inexperienced doctors on how much force to apply when taking the floating, middle and sinking pulse, which has a strong clinical use value; the pulse diagnosis device can also manage the system power supply and collect and process the spontaneous pulse image data according to the pulse diagnosis status, which not only reduces the system power consumption but also is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the integrated pulse sensor of the present invention
[0018] Figure 2 Functional block diagram of the signal conditioning circuit 1 of the present invention;
[0019] Figure 3 Functional block diagram of the signal conditioning circuit 2 of the present invention;
[0020] Figure 4 A schematic diagram of the wearable pulse diagnosis device of the present invention;
[0021] Figure 5 A schematic diagram of another form of the wearable pulse diagnosis device of the present invention. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0023] The following will be combined Figure 1-5It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.
[0024] Example
[0025] The integrated pulse condition sensor of the present invention is as shown in the attached Figure 1 , including a flexible PCB, a flexible pressure sensor, a signal conditioning circuit and a silicone encapsulation formed into a fingertip shape at the fingertips (the silicone part is not shown in the figure). The flexible pressure sensor and the signal conditioning circuit are assembled on the flexible PCB, and the electrical connection of all electronic components is realized through the flexible PCB; the silicone encapsulation plays a sealing and protective role for the flexible PCB and all electronic components to be waterproof, dustproof and scratch-proof, and makes each component an integrated whole; in particular, the silicone encapsulation is formed into a fingertip shape at the fingertips, which is convenient for wearing the sensor on the fingertips.
[0026] The flexible PCB of the present application is a three-in-one interdigital shape, and the appearance includes eight areas covering the three fingertips, the backs of three fingers and the back of the hand, namely the index finger end 100 area, with an area of about 10ⅹ15mm, the middle finger end 101 area, with an area of about 10ⅹ15mm, the ring finger end 102 area, with an area of about 10ⅹ15mm, the index finger back 103 connecting strip area, with an area of about 120ⅹ3mm, the middle finger back 104 connecting strip area, with an area of about 130ⅹ3mm, the ring finger back 105 connecting strip area, with an area of about 120ⅹ3mm, the three-in-one confluence area 106, which is an isosceles triangle with a base length of 35mm and a waist length of 20mm, and the signal output end 107, with an area of about 20ⅹ6mm. In particular, the end of the signal output end 107 adopts a gold finger design, including power supply, ground, pulse signal, finger pressure signal, pulse diagnosis status signal, etc. The length of each fingertip zone is approximately half the circumference of the fingertip.
[0027] The flexible pressure sensor of the present application includes an index finger end sensor 200, a middle finger end sensor 201, and a ring finger end sensor 202 for detecting pulse signals of Cun, Guan, and Chi, respectively. The sensors are placed in the corresponding fingertip area of the flexible PCB. When the flexible PCB is encapsulated with silicone at the fingertips and bent into a finger sleeve shape, the flexible pressure sensor is located at the fingertips. Since the doctor has professional autonomy in placing the three fingers on the patient's radial artery when taking the pulse, the technical solution avoids the problem of inaccurate positioning of Cun, Guan, and Chi.
[0028] The signal conditioning circuit of the present application includes sub-module 300, sub-module 301, sub-module 302, and sub-module 303, wherein sub-modules 300, 301, and 302 are respectively placed on the fingernails of the index finger end 100 area, the middle finger end 101 area, and the ring finger end 102 area of the flexible PCB, and sub-module 303 is placed in the three-in-one confluence area 106 area of the flexible PCB.
[0029] The submodules 300, 301 and 302 of the signal conditioning circuit have the same circuit structure, and the functional block diagram is shown in the attached figure. Figure 2 , including a sensing circuit, a preamplifier, a low-pass amplifier, and a high-pass amplifier. The sensing circuit outputs a pressure sensing signal, which is composed of a resistor voltage divider network composed of a power supply VCC, a resistor R0, and a flexible pressure sensor Rs. The resistance value of the flexible pressure sensor Rs changes with the changes in the doctor's finger pressure and the patient's radial artery pulse pressure; the preamplifier is used to amplify the pressure sensing signal and output it to the low-pass amplifier and the high-pass amplifier respectively; the cut-off frequency of the low-pass amplifier is about 0.5Hz, which is used to perform low-pass filtering on the pressure sensing signal to obtain the finger pressure signal applied by the doctor when taking the floating, middle, and sinking pulse and further amplify it to a suitable amplitude; the cut-off frequency of the high-pass amplifier is about 0.8Hz, which is used to perform high-pass filtering on the pressure sensing signal to obtain the patient's pulse signal and further amplify it to a suitable amplitude.
[0030] The high-pass amplifier is used to perform high-pass filtering on the pressure sensing signal to obtain the patient's pulse signal and further amplify it to a suitable amplitude. Obviously, since the submodules 300, 301, and 302 correspond to the index finger end sensor 200, the middle finger end sensor 201, and the ring finger end sensor 202 respectively, the pulse signals outputted correspond to the Cun, Guan, and Chi pulses respectively.
[0031] The functional block diagram of the submodule 303 of the signal conditioning circuit is shown in the attached figure. Figure 3 The pressure sensing signal 1, sensing signal 2, and sensing signal 3 from the submodules 300, 301, and 302 are respectively superimposed by diodes D1, D2, and D3, and compared with the reference voltage Vref through a voltage comparator to obtain a pulse diagnosis state signal. When any sensing signal is greater than the reference voltage Vref, the comparator outputs a high level, indicating that the doctor is in a state of diagnosing the patient's pulse. The reference voltage Vref in this embodiment is 0.5V.
[0032] The present invention also provides a wearable pulse diagnosis device, the pulse diagnosis device comprises the above-mentioned integrated pulse condition sensor, the two types of the pulse diagnosis device are respectively as shown in the attached Figure 4 and attached Figure 5 . Figure 4The pulse diagnosis device comprises the integrated pulse condition sensor 1, a main body 2, and a binding belt 3, wherein the main body 2 is placed on the back of the hand; Figure 5 The pulse diagnosis device comprises the integrated pulse condition sensor 1 and a main body 2, and the main body 2 is placed on the wrist; the main body 2 of the pulse diagnosis device includes but is not limited to power supply, system wake-up management according to the pulse diagnosis state signal, ADC (analog-to-digital conversion) sampling and pulse condition analysis of the pulse condition signal and the finger pressure signal, communication interaction between the pulse diagnosis device and the host computer, and other functions. In view of the fact that the technical solutions of the related functions of the main body are easy to understand by ordinary technicians in this field, they will not be repeated here.
[0033] In particular, as attached Figure 4 and attached Figure 5 The finger sleeve part of the pulse diagnosis device shown in the figure, as mentioned above, the length of the flexible PCB at each fingertip is about half the circumference of the fingertip, so the other half of the finger sleeve around the fingertip is an elastic and retractable silicone film, which is suitable for people with different finger thicknesses.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An integrated pulse sensor, characterized in that: It includes a flexible PCB, a flexible pressure sensor, a signal conditioning circuit and a silicone encapsulation formed as a fingertip at the fingertip; the flexible pressure sensor and the signal conditioning circuit are assembled on the flexible PCB, and the electrical connection of all electronic components is realized through the flexible PCB; the silicone encapsulation is used to seal and wrap the flexible PCB and all electronic components, and make each component an integrated whole; Used to detect pulse diagnosis status, floating, middle and sinking pressure, and complete information of Cun, Guan and Chi pulses.
2. An integrated pulse condition sensor according to claim 1, characterized in that: The finger sleeve is used to wear the integrated pulse sensor on the finger tip, so that the flexible pressure sensor is located at the pulp of the finger tip.
3. The integrated pulse condition sensor as claimed in claim 1, characterized in that: The flexible pressure sensor comprises an index finger end sensor, a middle finger end sensor, and a ring finger end sensor, which are respectively placed on corresponding fingertip areas of the flexible PCB for detecting Cun, Guan, and Chi pulse signals.
4. An integrated pulse condition sensor according to claim 1, characterized in that: The flexible PCB is in the shape of a three-in-one forked finger, and its appearance includes eight areas covering the three fingertips, the backs of three fingers and the back of the hand, namely, the index finger end area, the middle finger end area, the ring finger end area, the index finger back connecting strip area, the middle finger back connecting strip area, the ring finger back connecting strip area, the three-in-one confluence area and the signal output end.
5. An integrated pulse condition sensor according to claim 4, characterized in that: The end of the signal output terminal adopts a gold finger design.
6. An integrated pulse condition sensor according to claim 1, characterized in that: The signal conditioning circuit includes four submodules respectively arranged at the nails of the index finger end, the middle finger end, the ring finger end of the flexible PCB and at the three-in-one confluence area of the flexible PCB.
7. An integrated pulse condition sensor according to claim 6, characterized in that: The submodules of the three signal conditioning circuits at the ends of the index finger, middle finger and ring finger have the same circuit structure, including a sensing circuit, a preamplifier, a low-pass amplifier and a high-pass amplifier, wherein the sensing circuit outputs a pressure sensing signal, which is composed of a resistor voltage divider network consisting of a power supply VCC, a resistor R0 and a flexible pressure sensor Rs, and the resistance value of the flexible pressure sensor Rs changes with the changes in the doctor's finger pressure and the patient's radial artery pulse pressure; the preamplifier is used to amplify the pressure sensing signal and output it to the low-pass amplifier and the high-pass amplifier respectively; the low-pass amplifier is used to perform low-pass filtering on the pressure sensing signal to obtain the finger pressure signal applied by the doctor when taking the floating, middle and sinking pulse and further amplify it to a suitable amplitude; the high-pass amplifier is used to perform high-pass filtering on the pressure sensing signal to obtain the patient's pulse signal and further amplify it to a suitable amplitude.
8. An integrated pulse condition sensor according to claim 6, characterized in that: The submodule of the signal conditioning circuit in the three-in-one junction area of the flexible PCB is used to superimpose the pressure sensing signals of the three fingers and compare them with the reference voltage to obtain a pulse diagnosis status signal.
9. A wearable pulse diagnosis device, characterized in that: The invention comprises the integrated pulse sensor according to any one of claims 1 to 8.
10. A wearable pulse diagnosis device, characterized in that: It also includes the main body and / or strap of the device, which is placed on the back of the hand or wrist and is used to receive the output signal of the integrated pulse sensor, including but not limited to power supply, system wake-up management according to the pulse diagnosis status signal, ADC sampling and pulse analysis of pulse signals and finger pressure signals, and communication interaction with the host computer, all or part of the functions.