CN115886734A - Pulse-taking bracelet capable of applying fixed pressure - Google Patents
Pulse-taking bracelet capable of applying fixed pressure Download PDFInfo
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- CN115886734A CN115886734A CN202211543446.XA CN202211543446A CN115886734A CN 115886734 A CN115886734 A CN 115886734A CN 202211543446 A CN202211543446 A CN 202211543446A CN 115886734 A CN115886734 A CN 115886734A
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- 238000003491 array Methods 0.000 claims description 20
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 abstract description 10
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- 210000001015 abdomen Anatomy 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000035485 pulse pressure Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
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Abstract
The invention discloses a pulse-taking bracelet capable of applying fixed pressure. The wrist band can be sleeved at the wrist opening of the hand, the pressure applied by the fingers to pulse feeling is simulated by adjusting the air pressure of the elastic expansion pipes, the pressure applied by each elastic expansion pipe can be independently controlled according to the requirement required by pulse diagnosis, the three elastic expansion pipes can apply uniform and equal pressure to the cunguanchi part, and different pressures can be applied according to actual requirements. Therefore, the pulse condition detector can transmit pulse signals under specified pressure through digital signals by the aid of the flexible piezoelectric sensor arranged at the cunkou position to accurately detect pulse conditions, so that the pulse condition detector meets physical conditions during actual pulse feeling.
Description
Technical Field
The invention belongs to the technical field of testing instruments, and particularly relates to a pulse-taking bracelet capable of applying fixed pressure.
Background
The pulse condition signal acquisition device is one of the important research contents of the traditional Chinese medicine pulse diagnosis instrument, and the result obtained by the pulse condition analysis system has credibility only by ensuring the authenticity and integrity of the pulse condition signal. The waveform of the pulse wave can reflect the pulse condition form, and the pulse pressure can be used for judging the depth of the pulse condition, so that the pulse condition signal and the pulse pressure are important judgment bases for diagnosis. In order to fully simulate the pulse feeling mode of the cunkou pulse feeling method in the traditional Chinese medicine, the traditional Chinese medicine pulse feeling instrument simulates pulse feeling fingers through a pulse sensor, and a pressurizing device applies pressure to the pulse sensor to simulate the pressing pressure of the finger abdomen to the wrist.
Pulse taking is also called pulse feeling, and is a diagnostic method for TCM to understand the intrinsic changes of disease by pressing the arteries of a patient with hands according to the pulse condition. The pulse is the image of the pulse corresponding to the finger. The generation of pulse conditions is directly related to the fluctuation of the heart, the abundance or insufficiency of heart qi, the smooth flow of the vessels and the abundance or insufficiency of qi and blood. In the traditional Chinese medicine diagnosis and treatment process at the present stage, the pulse condition is monitored by pressing the corresponding wrist opening by the fingers of a person, and in order to simulate the finger pressing process, a bracelet capable of controlling the applied pressure and accurately pressing the corresponding pulse opening is designed.
In traditional Chinese medicine pulse diagnosis, a traditional Chinese medicine doctor senses the pulse condition state of a patient by finger and abdomen touch, and the pulse diagnosis objectively requires that a pulse acquisition system can quantify the sensing state into a specific physical quantity, and requires that the physical quantity has the characteristics of real-time monitoring and easiness in detection. The physical quantity is then converted into a digital signal through a circuit to facilitate the subsequent analysis and processing of the pulse signal, and the process of converting the sensing quantity into the physical quantity is realized by a pulse sensor. The pulse taking is developed objectively, so far, chinese and foreign scholars have made a lot of research on the development of pulse sensors, which are various in kind and function, and can be specifically classified into pressure sensors, photoelectric sensors, microphones and sensors using ultrasonic doppler phenomenon.
However, although the development of pulse sensors has advanced to some extent, the pulse diagnosis in traditional chinese medicine is focused on three nine minutes, which have different pressures for finger pressing. The existing pulse collecting system does not usually consider pressure control during pulse signal collection, so the obtained pulse signals cannot truly reflect pulse diagnosis information of traditional Chinese medicine.
Disclosure of Invention
The invention aims to simulate the real pressing of fingers and provide a pulse feeling bracelet for applying fixed pressure, so that the applied pressure can be realized in a mechanical mode, and a pulse signal under the fixed pressure is measured by a flexible piezoelectric sensor and is output in a digital signal form.
The invention adopts the following specific technical scheme:
a pulse-taking bracelet capable of applying fixed pressure comprises an elastic expansion tube, a flexible piezoelectric sensor array, a bracelet shell and an inflation and deflation control module; the bracelet shell is an annular body capable of being sleeved at the wrist opening of a hand, and three annular grooves are formed in the inner side surface of the annular body at intervals side by side;
three elastic expansion pipes are respectively embedded in three grooves formed in the inner side of the bracelet shell in a surrounding manner; each elastic expansion pipe is kept closed and is independently connected with the air outlet end of the inflation and deflation control module; the inflation and deflation control module is used for respectively and independently inflating and deflating the three elastic expansion pipes according to the target pressure value, so that the elastic expansion pipes can expand along the radial direction of the cross section of the pipeline to different degrees according to the internal inflation quantity;
the three flexible piezoelectric sensor arrays are correspondingly fixed at the three elastic expansion tubes at the top of the inner side of the annular body one by one; in a use state, the three flexible piezoelectric sensor arrays are pressed on three pulse feeling parts of the wrist of the hand by the three elastic expansion tubes corresponding to the three flexible piezoelectric sensor arrays respectively, and pulse signals are obtained.
Preferably, the inflation and deflation control module comprises an air pump, an air pressure sensor, a deflation valve and a control module, wherein the air pump is connected with the three elastic expansion pipes and provides air sources for the three elastic expansion pipes, and the three elastic expansion pipes perform deflation control through the opening and closing of the deflation valve; the air pressure sensors are used for detecting the air pressure in the three elastic expansion pipes respectively and sending air pressure signals to the control module, and the control module controls the air pressure in the elastic expansion pipes according to the air pressure signals and the air charging and discharging instructions input by a user.
Preferably, the inflation and deflation control module further comprises a button for a user to control the air inflow, and the control module can control the air pressure inside the elastic expansion tube according to instructions input by the button.
Preferably, in the use state, the three flexible piezoelectric sensor arrays are respectively pressed on the cun, guan and chi parts of the wrist of the hand by the corresponding three elastic expansion tubes.
Preferably, the elastic expansion pipe is a rubber pipe.
Preferably, the flexible piezoelectric sensor array is connected with a signal processing circuit, and the signal processing circuit comprises a charge amplification circuit, a 50HZ trap circuit, a voltage lifting circuit, a voltage following circuit and a main control chip; wherein:
the main control chip is used for controlling the measurement frequency and data transmission of the whole circuit;
the charge amplifying circuit is used for converting the charge variation of the pressure sensor array into a voltage signal;
the 50HZ trap circuit removes power frequency interference in the pulse signal;
the voltage lifting circuit is used for lifting the whole voltage signal;
the voltage follower circuit is used for ensuring that the input voltage and the output voltage have the same magnitude and phase, and ensuring that a voltage signal acquired by the main control chip is undistorted.
Preferably, the annular body of the bracelet shell is in an oval runway shape, the top and the bottom of the inner surface of the annular body are planes, the bottom plane is used for bearing the weight of the wrist, and the top plane is used for providing support for the three elastic expansion tubes for applying pressure to the three flexible piezoelectric sensor arrays.
Preferably, the device further comprises a display screen for displaying the real-time air pressure inside each elastic expansion tube.
Preferably, the pulse digital signal processing device further comprises a display screen for displaying the pulse digital signal extracted based on the electric signals of the three flexible piezoelectric sensor arrays.
Preferably, the button, the display screen and the inflation and deflation control module are integrated on the same box body.
Compared with the prior art, the invention has the following beneficial effects: the wrist band can be sleeved at the wrist opening of the hand, the pressure applied by the fingers to pulse feeling is simulated by adjusting the air pressure of the elastic expansion pipes, the pressure applied by each elastic expansion pipe can be independently controlled according to the requirement required by pulse diagnosis, the three elastic expansion pipes can apply uniform and equal pressure to the cunguanchi part, and different pressures can be applied according to actual requirements. Therefore, the pulse condition detector can transmit pulse signals under specified pressure through the digital signals by the flexible piezoelectric sensor arranged at the cunkou position so as to accurately detect the pulse condition, and the pulse condition detector conforms to the physical conditions during actual pulse feeling.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a pulse-taking bracelet capable of applying a fixed pressure;
fig. 2 is a longitudinal sectional view of the bracelet housing.
Wherein, 1 is the rubber tube, 2 is flexible piezoelectric sensor array, 3 is the bracelet shell, 4 are the inflation control module, 5 are the button, 6 are the display screen.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention. The technical characteristics in the embodiments of the present invention can be combined correspondingly without mutual conflict.
In the description of the present invention, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element, i.e., intervening elements may be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
As shown in fig. 1, in a preferred embodiment of the present invention, a pulse-taking bracelet capable of applying a fixed pressure is provided, and its main components include a rubber tube 1, a flexible piezoelectric sensor array 2, a bracelet housing 3, an inflation and deflation control module 4, buttons 5 and a display screen 6. The specific structure of each component and the operation principle thereof will be described in detail below.
As shown in fig. 2, a schematic longitudinal section of the bracelet shell 3 is shown, the bracelet shell 3 is an annular body capable of being sleeved on a wrist opening of a hand, and three annular grooves are formed in the inner side of the annular body at intervals side by side. In this embodiment, the annular body of the bracelet shell 3 is in an oval racetrack shape as a whole, and is used for fixing the position of the wrist to determine the pulse position, the top and the bottom of the inner surface of the bracelet shell are both planes, the bottom plane is used for bearing the weight of the wrist, and the top plane is used for providing support for the three elastic expansion tubes 1 to apply pressure to the three flexible piezoelectric sensor arrays 2. The annular groove that the medial surface of the annular body was seted up is used for installing three corresponding rubber tube 1. Three rubber tubes 1 are respectively embedded in three grooves formed in the inner side of the bracelet shell 3 in a surrounding manner, but it needs to be noted that the rubber tubes 1 are not completely embedded in the grooves but are in a half-embedded state, so that fixation is realized, and the wrist can be pressed after the rubber tubes are expanded.
The rubber tube 1 has the function of utilizing the expansibility thereof to generate radial expansion along the cross section of the pipeline, so that the flexible piezoelectric sensor array 2 for detecting pulse signals is pressed on the skin surface of the wrist. In order to ensure that the rubber pipes 1 can expand, each rubber pipe 1 is kept airtight, but a corresponding air inlet is required to be reserved for independently connecting the air outlet end of the inflation and deflation control module 4, and meanwhile, an air outlet port capable of being controlled through a valve is also required to be arranged. The inflation and deflation control module 4 is used for respectively and independently inflating and deflating the three rubber tubes 1 according to the target pressure value, so that each rubber tube 1 can expand along the radial different degrees of the cross section of the pipeline according to the internal inflation quantity.
It should be noted that the rubber tube 1 used for expansion in the bracelet housing 3 can be directly connected with the inflation and deflation control module 4, and also can be connected with other air inlet pipes by arranging air inlets, and then is indirectly connected with the inflation and deflation control module 4 through the air inlet pipes. In this embodiment, fill gassing control module 4 is connected to rubber tube 1 one end, and the other end passes and gets into corresponding recess behind the through-hole of seting up on bracelet casing 3, and rubber tube 1 has also had air intake duct's function simultaneously promptly.
In the pulse-taking process of traditional Chinese medicine, when taking a pulse, the middle finger is used to press the medial guan-pulse part of the high bone at the back of the palm, the index finger is used to press the cun-pulse part before guan, the ring finger is used to press the ulnar-pulse part after guan, the three fingers should be in the shape of a bow, and the fingers are in the same level, so that the abdomen is pressed to touch the pulse. Therefore, in order to simulate the pulse taking process of traditional Chinese medicine, the number of the flexible piezoelectric sensor arrays 2 is three. The flexible piezoelectric sensor arrays 2 are fixed at the three rubber tubes 1 at the top of the inner side of the annular body in a one-to-one correspondence manner. In a use state, the three flexible piezoelectric sensor arrays 2 are pressed on three pulse-taking parts of the wrist of the hand by the three corresponding rubber tubes 1 respectively, and pulse signals are obtained. In this embodiment, in the use state, the three flexible piezoelectric sensor arrays 2 are pressed on the cun, guan and chi parts of the wrist of the hand by the three corresponding rubber tubes 1.
It should be noted that, the target pressure value in the inflation and deflation control module 4 can be reasonably adjusted according to the specific needs of computer pulse diagnosis, and the target pressure value can be automatically controlled according to a preset pressure value, and can also be manually controlled by setting a corresponding control button on the bracelet.
In this embodiment, the inflation and deflation control module 4 includes an air pump, an air pressure sensor, a deflation valve and a control module, wherein the air pump is connected to the three rubber tubes 1 and provides air sources for the three rubber tubes 1, and the three rubber tubes 1 perform deflation control through opening and closing of the deflation valve. The air pressure sensors are used for detecting respective air pressures in the three rubber tubes 1 and sending air pressure signals to the control module, and the control module controls the air pressure in the rubber tubes 1 according to the air pressure signals and air charging and discharging instructions input by a user. The air pump and the control module of the inflation and deflation control module 4 are integrated on a box body, and the air pressure sensor is arranged in the rubber tube 1. The edge of the rubber tube is provided with a connector which is used for charging and discharging air. The air release valve is arranged at an air release interface of the rubber tube 1 and is automatically controlled by the control module. The control module can in principle employ any corresponding automatic control unit.
Meanwhile, in order to facilitate the user to control the air pressure during pulse feeling according to the requirement, three buttons for controlling the air inflow of the user are further integrated on the box body in the air charge and discharge control module 4, and the control module can control the air pressure inside the rubber tube 1 according to the instruction input by the buttons. As shown in fig. 1, three buttons 5 are arranged at the top of the left air inflation and deflation control module box body, and the three buttons 1 respectively control the air inflow of the three rubber tubes 1. Meanwhile, in order to facilitate visual display, a display screen is inherited on the side part of the box body and used for displaying real-time air pressure inside each elastic expansion tube 1 and displaying pulse digital signals extracted based on electric signals of the three flexible piezoelectric sensor arrays 2. In this embodiment, the three buttons 5 respectively perform pressurization, depressurization and switching on the rubber tube currently performing pressure control from left to right, and if the rubber tube 1 is labeled as tubes No. 1,2 and 3, the three buttons 5 can be used to control 3 tubes to pressurize respectively, or all the tubes to pressurize simultaneously, and the depressurization is the same.
When the inflatable bracelet is used, the annular body of the bracelet can be sleeved at the position of the wrist opening, the three rubber tubes 1 are respectively inflated by the air pump to be expanded, and the increased air pressure can be set to control the given pressure. The buttons can respectively control the air inflow of the three pipes to press the wrist opening and simulate the finger pressing during pulse taking. The buttons can respectively control the air inflow of the three pipes to apply pressure to the wrist, and the display screen 6 is used for displaying the pressure to simulate the finger pressing during pulse taking. After the pressure is adjusted to a corresponding value, the pulse beat rule can be detected through the flexible pressure sensor array 2 at the cunkou position, and the strength of the pulse is displayed by a digital signal on the display screen 6 or other external equipment.
Although the rubber tube 1 is used to expand and press the inside of the housing in the above embodiment of the present invention, other elastic expansion tubes may be used in other embodiments, and the rubber tube is not necessarily used.
It should be noted that the specific form of the flexible piezoelectric sensor array 2 in this embodiment is not limited, and the flexible piezoelectric sensor array may be implemented by a related pulse signal sensor array in the prior art, but a flexible sensor is required because the skin surface of a human body has deformability. The flexible piezoelectric sensor array 2 in this embodiment may be implemented by using a PVDF piezoelectric sensor array. The flexible piezoelectric sensor array 2 needs to be used with a signal processing circuit in order to extract a corresponding digital signal.
In one embodiment of the present invention, the signal processing circuit to which the flexible piezoelectric sensor array 2 is connected includes: the circuit comprises a charge amplification circuit, a 50HZ trap circuit, a voltage lifting circuit, a voltage following circuit and a main control chip.
Wherein:
the main control chip is used for controlling the measurement frequency and data transmission of the whole circuit;
the charge amplifying circuit is used for converting the charge variation of the pressure sensor array into a voltage signal;
the 50HZ trap circuit removes power frequency interference in the pulse signal;
the voltage lifting circuit is used for lifting the whole voltage signal;
and the voltage follower circuit is used for ensuring that the input voltage and the output voltage have the same magnitude and phase, and ensuring that the voltage signal acquired by the main control chip has no distortion.
However, it should be noted that different flexible piezoelectric sensor arrays 2 need to be matched with different signal processing circuits, and most manufacturers can be matched with corresponding signal processing circuits and can directly adopt the same.
The above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical solutions obtained by means of equivalent substitution or equivalent transformation all fall within the protection scope of the present invention.
Claims (10)
1. A pulse-taking bracelet capable of applying fixed pressure is characterized by comprising an elastic expansion tube, a flexible piezoelectric sensor array, a bracelet shell and an inflation and deflation control module; the bracelet shell is an annular body capable of being sleeved at the wrist opening of a hand, and three annular grooves are formed in the inner side surface of the annular body at intervals side by side;
three elastic expansion pipes are respectively embedded in three grooves formed in the inner side of the bracelet shell in a surrounding manner; each elastic expansion pipe is kept closed and is independently connected with the air outlet end of the inflation and deflation control module; the inflation and deflation control module is used for respectively and independently inflating and deflating the three elastic expansion pipes according to the target pressure value, so that the elastic expansion pipes can expand along the radial direction of the cross section of the pipeline to different degrees according to the internal inflation quantity;
the flexible piezoelectric sensor arrays are three and are fixed at the three elastic expansion tubes at the top of the inner side of the annular body in a one-to-one correspondence manner; in a use state, the three flexible piezoelectric sensor arrays are pressed on three pulse feeling parts of the wrist of the hand by the three elastic expansion tubes corresponding to the three flexible piezoelectric sensor arrays respectively, and pulse signals are obtained.
2. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein the inflation and deflation control module comprises an air pump, an air pressure sensor, a deflation valve and a control module, the air pump is connected with three elastic expansion pipes and provides air sources for the three elastic expansion pipes, and the three elastic expansion pipes perform deflation control through opening and closing of the deflation valve; the air pressure sensors are used for detecting respective air pressure in the three elastic expansion pipes and sending air pressure signals to the control module, and the control module controls the air pressure in the elastic expansion pipes according to the air pressure signals and the air charging and discharging instructions input by a user.
3. The pulse-taking bracelet capable of applying fixed pressure according to claim 2, wherein the inflation and deflation control module further comprises a button for a user to control the air inflow, and the control module can control the air pressure inside the elastic expansion tube according to instructions input by the button.
4. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein in a use state, the three flexible piezoelectric sensor arrays are respectively pressed on the cun, guan and chi parts of the wrist of the hand by the three elastic expansion tubes corresponding to the three flexible piezoelectric sensor arrays respectively.
5. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein the elastic expansion tube is a rubber tube.
6. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein the flexible piezoelectric sensor array is connected with a signal processing circuit, and the signal processing circuit comprises a charge amplification circuit, a 50HZ trap circuit, a voltage lifting circuit, a voltage follower circuit and a main control chip; wherein:
the main control chip is used for controlling the measurement frequency and data transmission of the whole circuit;
the charge amplifying circuit is used for converting the charge variation of the pressure sensor array into a voltage signal;
the 50HZ trap circuit removes power frequency interference in the pulse signal;
the voltage lifting circuit is used for lifting the whole voltage signal;
the voltage follower circuit is used for ensuring that the input voltage and the output voltage have the same magnitude and phase, and ensuring that voltage signals acquired by the main control chip are undistorted.
7. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein the annular body of the bracelet shell is in an overall oval racetrack shape, the top and the bottom of the inner surface of the bracelet shell are both flat surfaces, the bottom flat surface is used for bearing the weight of a wrist, and the top flat surface is used for providing support for the three elastic expansion tubes for applying pressure on the three flexible piezoelectric sensor arrays.
8. The pulse-taking bracelet capable of applying fixed pressure according to claim 3, further comprising a display screen for displaying real-time air pressure inside each elastic expansion tube.
9. The pulse-taking bracelet of claim 3 capable of applying fixed pressure, further comprising a display screen for displaying pulse digital signals extracted based on the electrical signals of the three flexible piezoelectric sensor arrays.
10. The pulse-taking bracelet capable of applying fixed pressure according to claim 1, wherein the button, the display screen and the inflation and deflation control module are integrated on the same box body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211543446.XA CN115886734A (en) | 2022-12-02 | 2022-12-02 | Pulse-taking bracelet capable of applying fixed pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211543446.XA CN115886734A (en) | 2022-12-02 | 2022-12-02 | Pulse-taking bracelet capable of applying fixed pressure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205251521U (en) * | 2015-10-12 | 2016-05-25 | 哈尔滨工程大学 | Bracelet formula pulse signal detection device with self -align pulse position |
| CN106214134A (en) * | 2016-07-29 | 2016-12-14 | 济南舜风科技有限公司 | Electronic pulse feeling device based on wrist strap of feeling the pulse |
| CN109247919A (en) * | 2018-08-09 | 2019-01-22 | 华东理工大学 | A kind of three pulse-tracing collections combination bracelet devices of detachable Chinese medicine |
| CN112842292A (en) * | 2021-01-29 | 2021-05-28 | 清华大学深圳国际研究生院 | Wearable digital pulse diagnosis instrument |
| CN113080888A (en) * | 2021-04-08 | 2021-07-09 | 中国科学院空天信息创新研究院 | Flexible array man-machine cooperative pulse diagnosis instrument |
-
2022
- 2022-12-02 CN CN202211543446.XA patent/CN115886734A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205251521U (en) * | 2015-10-12 | 2016-05-25 | 哈尔滨工程大学 | Bracelet formula pulse signal detection device with self -align pulse position |
| CN106214134A (en) * | 2016-07-29 | 2016-12-14 | 济南舜风科技有限公司 | Electronic pulse feeling device based on wrist strap of feeling the pulse |
| CN109247919A (en) * | 2018-08-09 | 2019-01-22 | 华东理工大学 | A kind of three pulse-tracing collections combination bracelet devices of detachable Chinese medicine |
| CN112842292A (en) * | 2021-01-29 | 2021-05-28 | 清华大学深圳国际研究生院 | Wearable digital pulse diagnosis instrument |
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