Wrist type traditional Chinese medicine pulse diagnosis instrument

Abstract

The invention discloses a wrist type traditional Chinese medicine pulse diagnosis instrument which comprises a wrist strap unit and a display control body. The wrist strap unit comprises an arc-shaped self-buckling body, an inflatable airbag assembly and a pulse acquisition unit; a controller, an air pressure adjusting module, a PCB and a power source are integrated in the display control body, the air pressure adjusting module is communicated with the air bag and controlled by the controller, and the upper cover is provided with operation buttons and a state display device. The inflatable airbag assembly comprises a flexible sealing cavity, and the flexible sealing cavity is provided with a gas inlet / outlet and a pressure detection interface; the pulse collecting unit comprises a flexible base body, induction areas corresponding to the traditional Chinese medicine pulse diagnosis positions are arranged on the base body, each induction area is provided with a film type pressure sensor, and the sensors are electrically connected with the controller through flexible conductive structures. The pulse diagnosis accuracy is improved through the design of the flexible base layer, the reverse closing sensing area and the like, and the traditional signal interference problem is solved; the double-layer air bag optimizes sealing and circuit arrangement, durability and signal stability are improved, and support is provided for objectification of traditional Chinese medicine pulse diagnosis.

Description

Technical Field

[0001] The invention belongs to the technical field of pulse diagnosis instrument design, and in particular relates to a wrist-type traditional Chinese medicine pulse diagnosis instrument. Background Art

[0002] Pulse diagnosis in traditional Chinese medicine is one of the core methods in the diagnostic system of traditional Chinese medicine. It judges the health status and disease condition of the human body by sensing the changes in the pulse at the inch pulse, guan pulse and chi pulse at the wrist.

[0003] With the development of modern science and technology, in order to overcome the limitations of traditional pulse diagnosis, some electronic pulse diagnosis equipment of traditional Chinese medicine has emerged. However, the existing pulse diagnosis instruments of traditional Chinese medicine generally adopt single-point single-time acquisition or photoelectric technology, which still has many problems in practical application.

[0004] In terms of structural design, the connection between the wristband unit and the display control body of some pulse diagnosis instruments is not flexible enough, and the wearing comfort is poor, which will cause discomfort to patients if used for a long time. In addition, the design of the inflatable airbag component of some instruments is unreasonable, and it cannot be flexibly adjusted according to the patient's wrist size and pulse characteristics, resulting in inaccurate pulse information collected.

[0005] In the pulse acquisition unit, the sensing area setting in the prior art is not scientific enough and cannot accurately correspond to the key positions of TCM pulse diagnosis, such as Cun pulse, Guan pulse and Chi pulse, so that the collected pulse data cannot truly reflect the pulse characteristics of the human body. Some products in the prior art use photoelectric technology to indirectly convert photoelectric signals into pulse data instead of directly collecting objective pulse data. They cannot sensitively and accurately detect subtle changes in the pulse, which affects the accuracy of pulse diagnosis.

[0006] In summary, the existing TCM pulse diagnosis instruments have many problems in structural design, pulse collection, etc., and it is difficult to meet the actual needs of TCM pulse diagnosis. Therefore, it is of great practical significance to develop a wrist-type TCM pulse diagnosis instrument with reasonable structure, accurate pulse collection, flexible air pressure adjustment, and complete functions. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention provides a wrist-type traditional Chinese medicine pulse diagnosis instrument with reasonable structure, accurate pulse collection and flexible air pressure regulation.

[0008] The present invention is implemented as follows: a wrist-type Chinese medicine pulse diagnosis instrument comprises: a wristband unit, comprising an arc-shaped self-detachable body and an inflatable airbag assembly arranged on the inner side of the arc-shaped self-detachable body, a flexible cuff is arranged on the outer side of the inflatable airbag assembly, and a pulse collection unit is arranged between the inner surface of the flexible cuff and the inflatable airbag assembly; a display and control body connected to the wristband unit, and a controller, an air pressure regulating module, a PCB board and a power supply are arranged inside the display and control body; wherein the inflatable airbag assembly comprises a flexible sealed cavity, the flexible sealed cavity is provided with a gas channel and a functional interface part, the functional interface part comprises a gas inlet and outlet connected to the air pressure regulating module and a pressure detection interface; the pulse collection unit comprises a flexible substrate, a plurality of sensing areas corresponding to the positions of Chinese medicine pulse diagnosis are arranged on the flexible substrate, each sensing area is provided with a thin film pressure sensor for detecting changes in pulse, and the thin film pressure sensor is electrically connected to the controller through a flexible conductive structure; the air pressure regulating module is connected to the inflatable airbag assembly through the gas inlet and outlet and is controlled by the controller, and the upper cover of the display and control body is provided with an operation button and a status display device.

[0009] Further preferably, the flexible substrate includes a flexible base layer, which includes a base segment and a cable interface portion provided at one end thereof; the base segment is provided with an Cun pulse sensing area, a Guan pulse sensing area and a Chi pulse sensing area corresponding to the Cun pulse, Guan pulse and Chi pulse diagnostic positions at the human wrist; each sensing area is correspondingly connected to a conductive connection part, and one end of each sensing area away from the cable interface portion forms a free end; a thin film piezoresistive sensor for collecting pressure changes at the pulse position is provided on the surface of each sensing area; the thin film piezoresistive sensor is electrically connected to the cable interface portion through conductive components on the surfaces of the conductive connection part and the anti-Channel sensing connection part, and adjacent conductive components are encapsulated and fixed by insulating sealant; it also includes an anti-Channel sensing connection part extending from a branch of the corresponding Guan pulse sensing area, and an anti-Channel sensing area is provided at the end of the anti-Channel sensing connection part.

[0010] Further preferably, an isolation groove is provided between adjacent sensing areas of the Cun pulse sensing area, the Guan pulse sensing area and the Chi pulse sensing area, extending along the width direction of the flexible base layer; the isolation groove forms an open end on the side close to the free end of the sensing area and forms a closed end on the side close to the base segment, and the deformation stress between adjacent sensing intervals is released through the open end.

[0011] Further preferably, a through-type stress buffer groove is provided on the reverse-closing sensing connection part, and the stress buffer groove is arranged along the extension direction of the reverse-closing sensing connection part, and the groove body contour is a gradually narrowing streamlined structure, which is used to reduce the deformation constraint of the flexible base layer during the reverse-closing pulse position detection of the radial artery at the wrist.

[0012] Further preferably, a protective structure is provided around the sensing area of ​​the thin film piezoresistive sensor, and a closed boundary formed by the protective structure along the contour of the sensing area is equidistantly spaced 0.5-3.0 mm from the edge of the sensing area to form a circumferentially continuous stress buffer zone.

[0013] Further preferably, the anti-off-sensing connection portion forms a gradual transition structure, and its expansion amplitude close to the first end of the off-pulse sensing area is greater than the expansion amplitude connected to the second end of the anti-off-pulse sensing area, and the expansion amplitude ratio is 1.5:1 to 4:1.

[0014] Further preferably, the flexible sealing cavity is formed by hot-melt sealing on all sides of a double-layer flexible film body; a superimposed sealing heat sealing area is provided in the middle of the flexible sealing cavity, the flexible sealing cavities at both ends of the superimposed sealing heat sealing area are connected, and a through wiring channel is provided in the superimposed sealing heat sealing area; a functional interface part is provided in the middle area of ​​the double-layer flexible film body, and the functional interface part includes: a gas inlet and outlet, which penetrates the single-layer flexible film body and is connected to the flexible sealing cavity, and is used for gas injection and discharge; a pressure detection interface, which is spaced apart from the gas inlet and outlet, penetrates the single-layer flexible film body and is connected to the flexible sealing cavity, and is used to connect a thin film pressure sensor in the display and control body.

[0015] Further preferably, inlet and exhaust avoidance grooves are provided at the ends of the gas inlet and outlet and the pressure detection interface in the airbag cavity; the inlet and exhaust avoidance grooves are provided with N in number along the circumferential direction, and N is greater than or equal to 1.

[0016] Further preferably, an insulating isolation layer is provided in the wiring channel of the overlapping, sealed and heat-sealed area, and the insulating isolation layer is preferably a flexible PVC film.

[0017] Further preferably, the flexible film body is made of PVC material, and the thickness of the single-layer flexible film body is 0.1-0.5 mm; and the outer surface of the flexible film body is smooth and flat, and at least the inner surface of the heat-sealed edge of the flexible film body is concave-convex twill.

[0018] Advantages and technical effects of the present invention: Compared with traditional single-shot single-point and photoelectric technology collection, the present invention has significant technical effects, which are specifically reflected in the following aspects: Structural design innovation: Flexible base and sensing area division: The present invention adopts a flexible base design, which can better adapt to the curved surface of the human wrist and improve the wearing comfort and fit. The base segment clearly divides the inch pulse, guan pulse, and chi pulse sensing areas, effectively avoiding the coupling interference between different pulse position signals, improving the accuracy of pulse signal acquisition, and improving the efficiency of pulse signal acquisition, which is difficult to achieve with traditional single-point pressure acquisition.

[0019] Reverse-guan sensing connection part: The addition of reverse-guan sensing connection part and reverse-guan sensing area solves the problem that traditional devices are difficult to detect reverse-guan pulse. It can obtain patient pulse information more comprehensively and accurately, and provide key basis for diagnosis of special physical constitution.

[0020] Sensor and signal transmission optimization: Thin film piezoresistive sensor: A thin film piezoresistive sensor with high sensitivity that can accurately collect pulse pressure changes is used. The electrical connection with the cable interface is achieved through the conductive parts on the surface of the conductive connection part and the reverse sensing connection part, and the adjacent conductive parts are encapsulated and fixed with insulating sealant, which not only ensures the stability of signal transmission, but also improves the stability and service life of the sensor.

[0021] Isolation groove and stress buffer groove: Isolation grooves are provided between adjacent sensing areas, which can effectively release deformation stress and avoid the interference of stress concentration on signal acquisition of each sensing area; a through-type stress buffer groove is provided on the reverse-closing sensing connection part to reduce the deformation constraint of the flexible base layer during the reverse-closing pulse position detection of the radial artery at the wrist, thereby improving the success rate and accuracy of the reverse-closing pulse detection.

[0022] Improvements in the airbag and line layout: Double-layer flexible membrane and hot-melt sealing: The flexible sealing cavity is formed by hot-melt sealing on all sides of a double-layer flexible membrane, which can effectively prevent gas leakage and ensure the stability of the air pressure in the airbag cavity, providing a basis for accurately simulating the pressure of the doctor's fingers pressing the pulse.

[0023] Overlapping sealing heat-sealing area and wiring channel: An overlapping sealing heat-sealing area is provided in the middle of the airbag cavity to enhance the structural stability of the airbag; a through wiring channel is provided in the overlapping sealing heat-sealing area to provide a special space for line layout, avoiding the disorderly distribution of lines on the airbag surface and reducing mutual interference and wear between lines.

[0024] Positioning of independent pulse diagnosis instrument: The present invention is an independent instrument designed specifically for TCM pulse diagnosis, which is essentially different from the watch products disclosed in the prior art. Although watch products are portable and have various functions, most of them use photoelectric technology to indirectly convert photoelectric signals into pulse data, rather than directly collecting objective pulse data. Therefore, it is difficult to compare with the present invention in terms of professionalism and accuracy of TCM pulse diagnosis. The present invention provides strong support for the objectification and standardization of TCM pulse diagnosis through a structural design that is highly in line with the needs of TCM pulse diagnosis, precise sensor layout, and optimized signal transmission methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 and Figure 4 It is a schematic diagram of the internal structure of the display and control body; Figure 5 is a schematic diagram of the structure of an inflatable airbag assembly; Figure 6 yes Figure 5 Rear view of Figure 7 It is a schematic diagram of the three-dimensional structure of the inflatable airbag assembly; Figure 8 yes Figure 5 AA cutaway stereogram; Fig. 9 yes Figure 5 BB cutaway stereogram; Fig.10 It is a schematic diagram of the structure of the pulse acquisition unit.

[0026] In the figure: 1. wristband unit; 2. arc-shaped self-fastening body; 3. inflatable airbag assembly; 31. double-layer flexible membrane; 311. airbag inner cavity; 312. overlapping sealing heat sealing area; 313. wiring channel; 314. inlet and outlet nozzles; 315. pressure detection nozzle; 316. inlet and outlet avoidance groove; 317. insulation isolation layer; 4. pulse collection unit; 411. base section; 412. wiring interface; 413. cun pulse sensing area; 414. guan pulse sensing area; 415 , radial pulse sensing area; 416, conductive connection part; 417, reverse closing sensing connection part; 418, reverse closing sensing area; 419, isolation groove; 4171, through-type stress buffer groove; 42, thin film piezoresistive sensor; 421, conductive component; 422, stress buffer belt; 5, display and control body; 51, controller; 52, air pressure regulating module; 53, PCB board; 54, power supply; 55, operation button; 56, status display device; 6, flexible cuff. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] See also Figures 1 to 10A wrist-type Chinese medicine pulse diagnosis instrument comprises: a wristband unit 1, comprising an arc-shaped self-buckle body 2 and an inflatable airbag assembly 3 arranged on the inner side of the arc-shaped self-buckle body, the arc-shaped self-buckle body is made of elastic memory metal material, combined with a rebound design to better fit the wrist; the inflatable airbag assembly can adjust the pressure so that the flexible cuff fits the wrist tightly, ensuring the accurate pulse collection position, improving the collection stability, and simulating the strength and fit of the doctor's fingers pressing the wrist during traditional pulse diagnosis; the outer side of the inflatable airbag assembly is provided with a flexible cuff 6, whose flexible characteristics make it comfortable to wear, while ensuring that the collection unit is in close contact with the wrist, which is conducive to the accurate collection of pulse information. A pulse acquisition unit 4 is arranged between the inner surface of the flexible cuff and the inflatable airbag assembly; a display and control body 5 is connected to the wristband unit, and is provided with a controller 51, an air pressure regulating module 52, a PCB board 53 and a power supply 54; the controller coordinates the operation of each module, the air pressure regulating module includes an air pump, an inlet and outlet valve, a pressure sensor and a pipeline, which are used to accurately adjust the airbag pressure, the PCB board realizes circuit connection and signal processing, the controller receives the pressure sensor signal, compares it with the preset threshold, sends instructions through the PCB board, drives the air pump or valve of the air pressure regulating module, and realizes the inflation and exhaust of the airbag; the power supply supplies power to the equipment to ensure the normal operation of the instrument.

[0029] Among them, the inflatable airbag assembly 3 includes a flexible sealed cavity, which is provided with a gas channel and a functional interface part, and the functional interface part includes a gas inlet and outlet connected to the air pressure regulating module and a pressure detection interface; the flexible sealed cavity can be flexibly deformed to adapt to the shape of the wrist, the gas channel realizes gas circulation, the functional interface part is connected to the air pressure regulating module, the gas inlet and outlet facilitates gas injection and discharge, and the pressure detection interface is connected to a thin film pressure sensor to monitor the airbag pressure in real time.

[0030] The pulse acquisition unit 4 includes a flexible substrate, on which a plurality of sensing areas corresponding to the positions of pulse diagnosis in traditional Chinese medicine are arranged, each sensing area is provided with a thin film pressure sensor for detecting changes in pulse condition, and the thin film pressure sensor is electrically connected to the controller through a flexible conductive structure; the flexible substrate adapts to wrist bending, a plurality of sensing areas correspond to the positions of pulse diagnosis in traditional Chinese medicine, the thin film pressure sensor detects changes in pulse condition, and the flexible conductive structure realizes stable signal transmission, thereby ensuring accurate acquisition of pulse condition information of Cun pulse, Guan pulse, and Chi pulse.

[0031] The air pressure regulating module is connected to the inflatable airbag assembly through the gas inlet and outlet and is controlled by the controller. The upper cover of the display and control body is provided with an operation button 55 and a status display device 56. The status display device is used to display the power level and Bluetooth on status indicator light. The display and control body can also be provided with a charging interface to realize charging of the power supply.

[0032] Specifically, the flexible substrate of the pulse acquisition unit 4 includes a flexible base layer, which includes a base segment 411 and a cable interface portion 412 provided at one end thereof; the base segment is provided with an inch pulse sensing area 413, a guan pulse sensing area 414 and a chi pulse sensing area 415 corresponding to the inch pulse, guan pulse and chi pulse diagnostic positions at the wrist of the human body; each sensing area is connected to a conductive connection portion 416, and one end of each sensing area away from the cable interface portion forms a free end; it also includes an anti-guan sensing connection portion 417 extending from a branch of the corresponding guan pulse sensing area, and an anti-guan sensing area 418 is provided at the end of the anti-guan sensing connection portion; a thin film pressure sensor for collecting pressure changes at the pulse position is bonded to the surface of each sensing area, which is a thin film piezoresistive sensor 42; the thin film piezoresistive sensor is electrically connected to the cable interface portion through a conductive connection portion and a conductive component 421 on the surface of the anti-guan sensing connection portion, and adjacent conductive components are encapsulated and fixed by insulating sealant.

[0033] The pressure collection unit for traditional Chinese medicine pulse diagnosis of the present invention has significant technical effects: first, the structural design is highly consistent with the needs of traditional Chinese medicine pulse diagnosis. The setting of the flexible base layer can better adapt to the curved surface of the human wrist, improve the wearing comfort and fit, and ensure the accuracy of pressure collection. The base segment clearly divides the inch pulse, guan pulse, and chi pulse sensing areas, which is highly targeted and can effectively avoid coupling interference between different pulse position signals, thereby improving the accuracy of pulse signal collection.

[0034] Secondly, the addition of a reverse-close sensing connection part and a reverse-close sensing area solves the problem that traditional devices are difficult to detect reverse-close pulses. It can obtain the patient's pulse information more comprehensively and accurately, providing key basis for the diagnosis of special physical conditions.

[0035] Furthermore, the thin film piezoresistive sensor is highly sensitive and can accurately collect changes in pulse pressure. The electrical connection with the cable interface is achieved through the conductive parts on the surface of the conductive connection part and the reverse sensing connection part, and the adjacent conductive parts are encapsulated and fixed with insulating sealant, which not only ensures the stability of signal transmission, but also improves the stability and service life of the sensor, and enhances the reliability and practicality of the entire pressure acquisition unit.

[0036] Further preferably, an isolation groove 419 is provided between adjacent sensing areas of the Cun pulse sensing area 413, the Guan pulse sensing area 414 and the Chi pulse sensing area 415, extending along the width direction of the flexible base layer; the isolation groove forms an open end on the side close to the free end of the sensing area, and forms a closed end on the side close to the base section, and the deformation stress between adjacent sensing areas is released through the open end. When pressure is applied to the wrist, the deformation stress generated between adjacent sensing areas can be effectively released through the open end. The interference of stress concentration on the signal collection of each sensing area is avoided, so that each sensing area can respond to the pulse pressure change more independently and accurately. In this way, the collected pulse signal is more real and reliable, which greatly improves the accuracy of traditional Chinese medicine pulse diagnosis, provides doctors with more accurate diagnostic basis, and helps to enhance the clinical application value of traditional Chinese medicine pulse diagnosis.

[0037] Preferably, the width of the isolation groove is not greater than 10 mm, and the preferred width in this embodiment is 3.5 mm. This width design can effectively release the deformation stress between adjacent sensing areas and avoid signal interference, while not affecting the overall structural stability of the flexible base due to excessive width; it helps each sensing area to accurately collect pulse signals.

[0038] Further preferably, the root of the closed end is provided with an anti-tear arc angle. The arc angle design can disperse stress concentration and reduce the risk of tearing of the closed end of the isolation groove due to deformation or external force pulling, thereby ensuring that the isolation groove structure is stable and the deformation stress is continuously and effectively released.

[0039] Further preferably, a through-type stress buffer groove 4171 is provided on the reverse-close sensing connection part, and the stress buffer groove is arranged along the extension direction of the reverse-close sensing connection part, and the groove body contour is a streamlined structure with a gradually narrowing shape, which is used to reduce the deformation constraint of the flexible base layer during the reverse-close pulse position detection of the radial artery of the wrist. When the wrist is slightly moved or deformed due to special physiological structure, the buffer groove can absorb and disperse the stress to avoid stress concentration affecting the acquisition of the reverse-close pulse signal. The reverse-close sensing area can capture the reverse-close pulse information more sensitively and accurately, and improve the success rate and accuracy of the reverse-close pulse detection.

[0040] Further preferably, the Cun pulse sensing area, Guan pulse sensing area and Chi pulse sensing area have the same geometric shape and size parameters, and their outer contour is one of a rectangle, an ellipse or a runway shape; wherein, the extension length of each sensing area along the length direction of the flexible base layer is 3-15 mm, preferably 14.5 mm in this embodiment, the expansion amplitude along the width direction is 3-15 mm, preferably 7 mm in this embodiment, and the length direction dimension is 1.5-5 times the width direction dimension.

[0041] This design makes the specifications of each sensing area uniform, which is convenient for standardized production and assembly. At the same time, the reasonable size setting can better fit the wrist pulse position, ensuring that each sensing area can effectively collect pulse signals, reducing signal deviation caused by improper size, and improving the accuracy and reliability of traditional Chinese medicine pulse diagnosis pressure collection.

[0042] Further preferably, the reverse Guan pulse sensing area has the same geometric shape as the Cun pulse sensing area, the Guan pulse sensing area and the Chi pulse sensing area, and the extension length along the length direction of the flexible base layer is 3-15mm, and the preferred embodiment is 7mm; the expansion amplitude along the width direction is 3-50mm, and the preferred embodiment is 18mm; the unified geometric shape can ensure that the reverse Guan pulse sensing area and other sensing areas maintain consistent mechanical properties when fitting the wrist, effectively avoiding signal acquisition errors caused by shape differences. At the same time, the reasonable size range enables it to accurately adapt to the reverse Guan pulse position, improve the ability to capture the reverse Guan pulse signal, provide more comprehensive and accurate diagnostic information for traditional Chinese medicine pulse diagnosis, and enhance the reliability of diagnosis.

[0043] Further preferably, a protective structure is provided around the sensing area of ​​the thin film piezoresistive sensor, and the closed boundary formed by the protective structure along the contour of the sensing area is spaced equidistantly by 0.5-3.0 mm from the edge of the sensing area, and 1 mm is preferred in this embodiment, forming a circumferentially continuous stress buffer zone 422. It can effectively disperse the stress applied to the sensing area by the outside world, avoid direct stress on key parts of the sensor, and reduce the risk of damage to the sensor due to stress concentration. At the same time, the buffer zone can reduce the impact of external interference on the sensing area, and ensure the accuracy of the sensor in collecting pulse pressure changes. This helps to improve the stability and reliability of the entire pressure acquisition unit, Further preferably, the reverse-off sensing connection part forms a gradual transition structure, and its expansion amplitude close to the first end of the Guan pulse sensing area is greater than the expansion amplitude connected to the second end of the reverse-off pulse sensing area, and the expansion amplitude ratio is 1.5:1 to 4:1. The preferred ratio of this embodiment is 2:1; this design can effectively buffer and disperse stress, and when the wrist moves or is subjected to external force, it can avoid stress concentration from damaging the connection part. At the same time, the gradual transition makes the connection between the connection part and different sensing areas more natural, reduces signal transmission interference, and ensures accurate collection of the reverse-off pulse signal.

[0044] Further preferably, the expansion amplitude of the second end of the gradual transition structure is 5 mm to 8 mm. This amplitude range can not only ensure good connection with the reverse pulse sensing area, but also effectively disperse stress and avoid excessive local stress. At the same time, the appropriate expansion amplitude helps to stabilize signal transmission, improve the quality of reverse pulse signal collection, and enhance the accuracy of reverse pulse detection in traditional Chinese medicine pulse diagnosis.

[0045] Preferably, the flexible sealed cavity is formed by hot-melt sealing around the double-layer flexible film 31. The double-layer film can effectively prevent gas leakage, ensure the stability of the air pressure in the airbag cavity, and provide a basis for accurately simulating the pressure of the doctor's finger pressing the pulse. At the same time, the double-layer flexible film has a stronger ability to resist damage when subjected to external pressure or friction, which prolongs the service life of the airbag and improves the reliability and durability of the entire pulse diagnosis instrument; the double-layer flexible film is sealed around to form a closed airbag cavity 311; hot-melt sealing is a reliable and efficient sealing method, which seals the double-layer flexible film around the double-layer flexible film to form a closed airbag cavity. This sealing method can ensure the sealing of the airbag cavity, prevent gas leakage from the edge, and ensure the stability and accurate control of the air pressure in the airbag. The closed airbag cavity provides an independent space for the injection and discharge of gas, so that the pulse diagnosis instrument can accurately control the pressure applied to the wrist pulse and improve the accuracy of pulse diagnosis.

[0046] A superimposed sealing heat sealing area 312 is provided in the middle of the airbag inner cavity, and the airbag inner cavity at both ends of the superimposed sealing heat sealing area is connected, further enhancing the structural stability of the airbag. The superimposed sealing heat sealing can make the double-layer film body tightly combined in this area, and also increase the overall strength of the airbag, so that it can better withstand the internal air pressure and external pressure.

[0047] A through wiring channel 313 is provided in the overlapped sealing heat sealing area, which provides a special space for wiring arrangement. This design allows the wiring to be arranged in an orderly manner, avoids the wiring being randomly distributed on the airbag surface, reduces mutual interference and wear between the wiring, and reduces the probability of wiring failure. At the same time, the through wiring channel also facilitates the installation and maintenance of the wiring, and improves production efficiency and product reliability.

[0048] The middle area of ​​the double-layer flexible membrane body is equipped with an inlet and outlet nozzle 314 on the gas inlet and outlet, which penetrates the single-layer flexible membrane body and is connected to the inner cavity of the airbag for gas injection and discharge; this design enables the pulse diagnosis instrument to conveniently control the air pressure in the airbag, and by injecting or discharging gas into the airbag, simulate the different strengths of the doctor's fingers pressing the pulse, thereby achieving accurate detection of different pulse conditions. The setting position and structural design of the inlet and outlet nozzles can ensure the smooth flow of gas and ensure the accuracy and stability of air pressure control.

[0049] The pressure detection nozzle 315 is spaced apart from the air inlet and outlet nozzles, penetrates the single-layer flexible membrane and is connected to the airbag inner cavity, and is used to connect the pressure sensor. This spacing arrangement can prevent the gas flow of the air inlet and outlet nozzles from interfering with the pressure detection, ensuring that the pressure sensor can accurately measure the air pressure changes in the airbag. The connection between the pressure detection nozzle and the airbag inner cavity enables the pressure sensor to obtain the pressure information in the airbag in real time, providing accurate data support for the pulse diagnosis instrument, thereby improving the accuracy and reliability of pulse diagnosis.

[0050] To sum up, the various technical features of the airbag used in the wristband-type Chinese medicine pulse diagnosis instrument cooperate with each other to achieve the high sealing, stability, reasonable line layout, and accurate air pressure control and pressure detection functions of the airbag, providing strong support for the objectivity and standardization of Chinese medicine pulse diagnosis.

[0051] Further preferably, the inlet and outlet nozzles 314 extend 3-6mm, preferably 5mm, and the pressure detection nozzle 315 extends 5-10mm, preferably 8mm, in the airbag cavity. This can avoid the film body from laminating and affecting its use, and ensure smooth and accurate gas circulation and pressure detection.

[0052] Further preferably, the ends of the air inlet and outlet nozzles and the pressure detection nozzle in the airbag cavity are provided with air inlet and outlet avoidance grooves 316. This can prevent the air inlet and outlet nozzles and the pressure detection nozzle from being squeezed when they fit the wrist, ensure that the air inlet and outlet and pressure detection are not hindered, and improve the accuracy of pulse diagnosis.

[0053] Further preferably, the intake and exhaust avoidance grooves are provided with N intake and exhaust avoidance grooves along the circumferential direction, and N is greater than or equal to 2.

[0054] Preferably, the center lines of the air inlet and outlet nozzles and the pressure detection nozzle are perpendicular to the horizontal center line of the airbag, which can accurately control the gas flow direction and pressure detection direction, reduce interference, and greatly improve the accuracy and reliability of pulse diagnosis data.

[0055] Further preferably, the inlet and outlet nozzles are 4-7mm, the inner diameter is 2-3mm, and the height is 3-6mm; preferably, the outer diameter is 6mm, the inner diameter is 2mm, and the height is 5mm; the outer diameter of the pressure detection nozzle is 4-7mm, the inner diameter is 2-3mm, and the height is 5-10mm; preferably, the outer diameter of the pressure detection nozzle is 6mm, the inner diameter is 2mm, and the height is 8mm; it ensures sufficient gas flow and pressure sensing sensitivity while taking into account the stability of the structure.

[0056] Further preferably, the distance between the wiring channel and the center line connecting the inlet and outlet nozzles and the pressure detection nozzle is 6-15mm, preferably 11mm. This can avoid interference between the line and the gas channel and the detection component, ensure stable signal transmission, and improve the measurement accuracy and reliability of the pulse diagnosis instrument.

[0057] Further preferably, the width of the wiring channel is 0.1-2 mm, preferably 0.2 mm, which can ensure smooth laying of the line and avoid excessive bending and damage of the line, and can effectively utilize the internal space of the airbag, reduce mutual interference between different lines, and ensure stable signal transmission.

[0058] Further preferably, an insulating isolation layer 317 is provided in the wiring channel of the overlapped sealed heat-sealed area. The material (such as PVC film) has good insulation performance and flexibility. Its technical effect is: effectively isolating the lines in the wiring channel to prevent short circuits or signal interference between lines, while maintaining the flexibility and sealing of the channel, ensuring stable signal transmission, and improving the measurement accuracy and reliability of the pulse diagnosis instrument.

[0059] Further preferably, the flexible film body is made of PVC material, and the thickness of the single-layer flexible film body is 0.1-0.5mm; preferably, 0.3mm; and the outer surface of the flexible film body is smooth and flat, at least the inner surface of the heat-sealed edge of the flexible film body is concave and convex twill, and the convex design of the inner surface is conducive to heat-sealed connection.

[0060] In summary, the present invention significantly improves the accuracy of traditional Chinese medicine pulse diagnosis and solves the problem of interference with traditional collected signals through innovative designs such as flexible base layer and reverse-off sensing area; the double-layer airbag optimizes sealing and line layout to improve durability and signal stability; as an independent pulse diagnosis instrument, it is different from watch-like products and is highly professional, providing strong support for the objectivity of traditional Chinese medicine pulse diagnosis.

[0061] 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. A wrist-type Chinese medicine pulse diagnosis instrument, characterized in that: include: The wristband unit comprises an arc-shaped self-decoupling body and an inflatable airbag assembly arranged on the inner side of the arc-shaped self-decoupling body, a flexible cuff is arranged on the outer side of the inflatable airbag assembly, and a pulse collection unit is arranged between the inner surface of the flexible cuff and the inflatable airbag assembly; A display and control body, connected to the wristband unit, which is internally provided with a controller, an air pressure regulating module, a PCB board and a power supply; Wherein, the inflatable airbag assembly includes a flexible sealed cavity, the flexible sealed cavity is provided with a gas channel and a functional interface part, and the functional interface part includes a gas inlet and outlet and a pressure detection interface connected to the air pressure regulating module; The pulse collection unit comprises a flexible substrate, on which a plurality of sensing areas corresponding to the positions of pulse diagnosis in traditional Chinese medicine are arranged, each sensing area is provided with a thin film pressure sensor for detecting changes in pulse, and the thin film pressure sensor is electrically connected to the controller via a flexible conductive structure; The air pressure regulating module is connected with the inflatable airbag assembly through the gas inlet and outlet and is controlled by the controller. The upper cover of the display and control body is provided with operating buttons and a status display device.

2. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 1, characterized in that: The flexible substrate includes a flexible base layer, which includes a base segment and a cable interface portion arranged at one end thereof; the base segment is provided with an Cun pulse sensing area, a Guan pulse sensing area and a Chi pulse sensing area corresponding to the Cun pulse, Guan pulse and Chi pulse diagnostic positions at the wrist of the human body; each sensing area is correspondingly connected to a conductive connection part, and one end of each sensing area away from the cable interface portion forms a free end; a thin film piezoresistive sensor for collecting pressure changes at the pulse position is arranged on the surface of each sensing area; the thin film piezoresistive sensor is electrically connected to the cable interface portion through the conductive connection part and the conductive parts on the surface of the anti-Channel sensing connection part, and the adjacent conductive parts are encapsulated and fixed by insulating sealant; it also includes an anti-Channel sensing connection part extending from a branch of the corresponding Guan pulse sensing area, and an anti-Channel sensing area is arranged at the end of the anti-Channel sensing connection part.

3. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 2, characterized in that: An isolation groove is provided between adjacent sensing areas of the Cun pulse sensing area, the Guan pulse sensing area and the Chi pulse sensing area, and extends along the width direction of the flexible base layer; the isolation groove forms an open end on the side close to the free end of the sensing area and a closed end on the side close to the base section, and the deformation stress between adjacent sensing intervals is released through the open end.

4. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 2, characterized in that: A through-type stress buffer groove is provided on the reverse-closing sensing connection part. The stress buffer groove is arranged along the extension direction of the reverse-closing sensing connection part. The groove body contour is a gradually narrowing streamlined structure, which is used to reduce the deformation constraint of the flexible base layer during the reverse-closing pulse position detection of the radial artery at the wrist.

5. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 2, characterized in that: A protective structure is provided around the sensing area of ​​the thin film piezoresistive sensor. The closed boundary formed by the protective structure along the contour of the sensing area is spaced equidistantly by 0.5-3.0 mm from the edge of the sensing area to form a circumferentially continuous stress buffer zone.

6. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 2, characterized in that: The reverse-off sensing connection portion forms a gradual transition structure, and its expansion amplitude close to the first end of the off pulse sensing area is greater than the expansion amplitude connected to the second end of the reverse-off pulse sensing area, and the expansion amplitude ratio is 1.5:1 to 4:

1.

7. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 1, characterized in that: The flexible sealing cavity is formed by hot-melt sealing on all sides of a double-layer flexible membrane body; an overlapping sealing heat-sealing area is provided in the middle of the flexible sealing cavity, and the flexible sealing cavities at both ends of the overlapping sealing heat-sealing area are connected, and a through wiring channel is provided in the overlapping sealing heat-sealing area; an air inlet and outlet nozzle is installed on the gas inlet and outlet in the middle area of ​​the double-layer flexible membrane body, which penetrates the single-layer flexible membrane body and is connected to the flexible sealing cavity for gas injection and discharge; a pressure detection nozzle is arranged at intervals from the gas inlet and outlet, penetrates the single-layer flexible membrane body and is connected to the flexible sealing cavity, and is used to connect the thin film pressure sensor in the display and control body.

8. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 7, characterized in that: Inlet and exhaust avoidance grooves are provided at the ends of the gas inlet and outlet and the pressure detection interface in the airbag cavity; the number of the inlet and exhaust avoidance grooves is N along the circumferential direction, and N is greater than or equal to 1.

9. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 7, characterized in that: An insulating isolation layer is provided in the wiring channel of the overlapping, sealed and heat-sealed area, and the insulating isolation layer is preferably a flexible PVC film.

10. The wrist-type Chinese medicine pulse diagnosis instrument according to any one of claim 7, characterized in that: The flexible film body is made of PVC material, and the thickness of the single-layer flexible film body is 0.1-0.5mm; and the outer surface of the flexible film body is smooth and flat, and at least the inner surface of the heat-sealed edge of the flexible film body is concave-convex twill.

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