A wrist-type traditional Chinese medicine pulse diagnosis instrument

Abstract

The present invention discloses a wrist-type Chinese medicine pulse diagnosis instrument, comprising a wristband unit and a display control body; the wristband unit includes an arc-shaped self-locking body, an inflatable airbag assembly, and a pulse acquisition unit; the display control body integrates a controller, an air pressure regulation module, a PCB board, and a power supply; the air pressure regulation module is connected to the airbag and controlled by the controller, and the upper cover is provided with an operation button and a status display device; the inflatable airbag assembly includes a flexible sealed cavity, which is provided with a gas inlet and outlet and a pressure detection interface; the pulse acquisition unit includes a flexible substrate, on which are provided sensing areas corresponding to the positions of Chinese medicine pulse diagnosis, each sensing area is provided with a thin film pressure sensor, and the sensor is electrically connected to the controller via a flexible conductive structure. The present invention improves the accuracy of pulse diagnosis through the design of a flexible base layer and a reverse-closed sensing area, and solves the problem of traditional signal interference; the double-layer airbag optimizes the sealing and circuit layout, improves durability and signal stability, and provides support for the objectification of 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] As one of the core methods in the TCM diagnostic system, pulse diagnosis in traditional Chinese medicine 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 positions on the human wrist.

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

[0004] In terms of structural design, some pulse diagnosis devices lack a flexible connection between the wristband unit and the display control unit, resulting in poor wearing comfort and discomfort for patients during prolonged use. Furthermore, the inflatable airbag assembly of some devices is poorly designed, unable to flexibly adjust to the patient's wrist size and pulse characteristics, resulting in inaccurate pulse information.

[0005] The existing technology's pulse acquisition units lack scientifically designed sensing areas, failing to precisely map to key locations in Traditional Chinese Medicine (TCM) pulse diagnosis, such as the Cun, Guan, and Chi pulses. Consequently, the collected pulse data fails to truly reflect the characteristics of the human body. Some existing products utilize photoelectric technology, indirectly converting photoelectric signals into pulse data rather than directly collecting objective pulse data. This makes it difficult to sensitively and accurately detect subtle pulse changes, impacting the accuracy of pulse diagnosis.

[0006] In summary, existing TCM pulse diagnosis instruments have many problems in terms of structural design, pulse acquisition, etc., and are 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 a reasonable structure, accurate pulse acquisition, 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 acquisition and flexible air pressure adjustment.

[0008] The present invention is implemented as follows: a wrist-type Chinese medicine pulse diagnosis instrument comprises: a wristband unit including an arcuate self-locking body and an inflatable airbag assembly disposed on the inner side of the arcuate self-locking body, a flexible cuff disposed on the outer side of the inflatable airbag assembly, and a pulse acquisition unit disposed between the inner surface of the flexible cuff and the inflatable airbag assembly; a display and control body connected to the wristband unit, 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 provided with a gas passage and a functional interface portion, wherein the functional interface portion includes a gas inlet and outlet connected to the air pressure regulating module and a pressure detection interface; the pulse acquisition unit includes a flexible substrate provided with a plurality of sensing areas corresponding to Chinese medicine pulse diagnosis positions, each sensing area provided with a thin film pressure sensor for detecting pulse changes, the thin film pressure sensor being electrically connected to the controller via a flexible conductive structure; the air pressure regulating module is connected to the inflatable airbag assembly via the gas inlet and outlet and is controlled by the controller; and the upper cover of the display and control body is provided with operation buttons 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 a 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 each sensing area forms a free end at one end away from the cable interface portion; the surface of each sensing area is provided with a thin film piezoresistive sensor for collecting pressure changes at the pulse position; 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 reverse-Channel sensing connection part, and the adjacent conductive parts are encapsulated and fixed by insulating sealant; it also includes a reverse-Channel sensing connection part extended from a branch of the corresponding Guan pulse sensing area, and the end of the reverse-Channel sensing connection part is provided with a reverse-Channel sensing area.

[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 the 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-offset 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-offset 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 membrane body; a superimposed sealing heat sealing area is provided in the middle of the flexible sealing cavity, and 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 membrane body, and the functional interface part includes: a gas inlet and outlet, which passes through the single-layer flexible membrane 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, passes through the single-layer flexible membrane 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, air intake 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 air intake and exhaust avoidance grooves are provided with N in 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] More preferably, the flexible membrane is made of PVC material, and the thickness of a single-layer flexible membrane is 0.1-0.5 mm; and the outer surface of the flexible membrane is smooth and flat, and at least the inner surface of the heat-sealed edge of the flexible membrane is concave-convex diagonal.

[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:

[0019] Structural Design Innovation: Flexible Base and Sensing Zone Division: This invention utilizes a flexible base design that better adapts to the curvature of the human wrist, enhancing wearer comfort and fit. Clearly demarcated sensing zones for the Cun, Guan, and Chi pulses are located on the base, effectively preventing coupling interference between signals at different pulse positions and improving the accuracy and efficiency of pulse signal acquisition, a feat difficult to achieve with traditional single-point pressure acquisition.

[0020] Anti-offset sensing connection part: The addition of anti-offset sensing connection part and anti-offset sensing area solves the problem that traditional devices are difficult to detect anti-offset pulse. It can obtain the patient's pulse information more comprehensively and accurately, providing a key basis for the diagnosis of special physical conditions.

[0021] 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 wiring 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.

[0022] Isolation groove and stress buffer groove: Isolation grooves are provided between adjacent sensing areas to effectively release deformation stress and avoid stress concentration from interfering with signal acquisition in each sensing area. A through-type stress buffer groove is provided on the reverse-close sensing connection to reduce the deformation constraint of the flexible base layer during reverse-close pulse detection of the radial artery at the wrist, thereby improving the success rate and accuracy of reverse-close pulse detection.

[0023] Improvements to the airbag and circuit 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, ensure the stability of the air pressure in the airbag cavity, and provide a basis for accurately simulating the pressure of the doctor's fingers pressing the pulse.

[0024] 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 dedicated space for wiring layout, avoiding the disorderly distribution of wiring on the airbag surface and reducing mutual interference and wear between wiring.

[0025] Positioning of a Standalone Pulse Diagnosis Instrument: This invention is a standalone instrument designed specifically for Traditional Chinese Medicine (TCM) pulse diagnosis, fundamentally different from the wristwatches disclosed in the prior art. While portable and versatile, wristwatches generally utilize optoelectronic technology, indirectly converting photoelectric signals into pulse data rather than directly collecting objective pulse data. Therefore, they cannot compare to the professionalism and accuracy of this invention in TCM pulse diagnosis. This invention, through a structural design that is highly tailored to the requirements of TCM pulse diagnosis, precise sensor layout, and optimized signal transmission, provides strong support for the objectification and standardization of TCM pulse diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 3 and Figure 4 It is a schematic diagram of the internal structure of the display and control body;

[0029] Figure 5 1. It is a schematic diagram of the structure of the inflatable airbag assembly;

[0030] Figure 6 yes Figure 5 Rear view;

[0031] Figure 7 1. It is a schematic diagram of the three-dimensional structure of the inflatable airbag assembly;

[0032] Figure 8 yes Figure 5 AA cutaway perspective view;

[0033] Figure 9 yes Figure 5 BB cutaway stereogram;

[0034] Figure 10 It is a schematic diagram of the structure of the pulse acquisition unit.

[0035] Figure: 1. Wristband unit; 2. Arc-shaped self-locking body; 3. Inflatable airbag assembly; 31. Double-layer flexible membrane; 311. Airbag inner cavity; 312. Overlapping and sealing heat-sealing area; 313. Cable channel; 314. Inlet and outlet nozzles; 315. Pressure detection nozzle; 316. Inlet and outlet avoidance groove; 317. Insulation isolation layer; 4. Pulse acquisition unit; 411. Base section; 412. Cable 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

[0036] In order to make the purpose, technical solutions 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 intended to limit the present invention.

[0037] See also Figures 1 to 10A wrist-type traditional Chinese medicine pulse diagnosis instrument comprises: a wristband unit 1, comprising an arc-shaped self-locking body 2 and an inflatable airbag assembly 3 arranged on the inner side of the arc-shaped self-locking body. The arc-shaped self-locking body is made of elastic memory metal material and combined with a rebound design to better fit the wrist; the inflatable airbag assembly can adjust the pressure to make the flexible cuff fit closely to the wrist, ensuring the accuracy of the 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; a flexible cuff 6 is provided on the outer side of the inflatable airbag assembly, whose flexibility makes it comfortable to wear and ensures 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 provided 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 internally provided with a controller 51, an air pressure regulating module 52, a PCB board 53 and a power supply 54; the controller comprehensively controls the operation of each module, the air pressure regulating module includes an air pump, an inlet and exhaust 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, and sends instructions through the PCB board to drive the air pump or valve of the air pressure regulating module to realize the inflation and exhaust of the airbag; the power supply supplies power to the equipment to ensure the normal operation of the instrument.

[0038] 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 regulation 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 regulation module, the gas inlet and outlet facilitate 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.

[0039] The pulse acquisition unit 4 includes a flexible substrate, on which are provided a plurality of sensing areas corresponding to positions for pulse diagnosis in Traditional Chinese Medicine. Each sensing area is provided with a thin film pressure sensor for detecting changes in the pulse condition. The thin film pressure sensor is electrically connected to the controller via a flexible conductive structure. The flexible substrate adapts to wrist bending, and the plurality of sensing areas correspond to positions for pulse diagnosis in Traditional Chinese Medicine. The thin film pressure sensor detects changes in the pulse condition, and the flexible conductive structure realizes stable signal transmission, thereby ensuring accurate acquisition of pulse condition information of the inch pulse, the guan pulse, and the chi pulse.

[0040] 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.

[0041] 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 a Cun pulse sensing area 413, a Guan pulse sensing area 414 and a Chi pulse sensing area 415 corresponding to the Cun pulse, Guan pulse and Chi pulse diagnostic positions at the human wrist; each sensing area is connected to a conductive connection portion 416, and each sensing area forms a free end at one end away from the cable interface portion; it also includes an anti-Channel sensing connection portion 417 extending from a branch of the corresponding Guan pulse sensing area, and an anti-Channel sensing area 418 is provided at the end of the anti-Channel sensing connection portion; the surface of each sensing area is bonded with a thin film pressure sensor for collecting pressure changes at the pulse position, which is a thin film piezoresistive sensor 42; the thin film piezoresistive sensor is electrically connected to the cable interface portion through the conductive connection portion and the conductive component 421 on the surface of the anti-Channel sensing connection portion, and the adjacent conductive components are encapsulated and fixed by insulating sealant.

[0042] The pressure acquisition unit for Traditional Chinese Medicine pulse diagnosis of the present invention has significant technical benefits: First, its structural design is highly compatible with the requirements of Traditional Chinese Medicine pulse diagnosis. The flexible base layer better adapts to the curvature of the human wrist, improving wearing comfort and fit, and ensuring accurate pressure acquisition. The base segment clearly demarcates the Cun, Guan, and Chi pulse sensing zones, providing strong targeting and effectively preventing coupling interference between different pulse position signals, thereby improving the accuracy of pulse signal acquisition.

[0043] Secondly, the addition of a reverse-off sensing connection part and a reverse-off sensing area solves the problem that traditional devices are difficult to detect reverse-off pulses. It can obtain the patient's pulse information more comprehensively and accurately, providing a key basis for the diagnosis of special physical conditions.

[0044] Furthermore, the use of a thin-film piezoresistive sensor offers high sensitivity, enabling precise acquisition of pulse pressure changes. Electrical connection to the cable interface is achieved through conductive components on the surfaces of the conductive connector and the reverse sensing connector. Adjacent conductive components are sealed and secured with insulating sealant, ensuring stable signal transmission and extending the sensor's stability and service life, ultimately enhancing the reliability and practicality of the entire pressure acquisition unit.

[0045] 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 acquisition 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 a more accurate diagnosis basis, and helps to enhance the clinical application value of traditional Chinese medicine pulse diagnosis.

[0046] Preferably, the width of the isolation groove is no greater than 10 mm, and in this embodiment, preferably 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; thus facilitating accurate pulse signal acquisition in each sensing area.

[0047] Furthermore, the base of the closed end is preferably provided with a tear-resistant arc angle. This arc angle design disperses stress concentration and reduces the risk of tearing at the closed end of the isolation slot due to deformation or external forces. This ensures the isolation slot structure is stable and effectively releases deformation stress.

[0048] Further preferably, a through-type stress buffer groove 4171 is provided on the reverse-offset sensing connection portion. The stress buffer groove is arranged along the extension direction of the reverse-offset sensing connection portion, and its groove body profile 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-offset pulse position detection of the radial artery at the wrist. When the wrist undergoes micro-movement or deformation caused by special physiological structures, the buffer groove can absorb and disperse stress, avoiding stress concentration affecting the acquisition of the reverse-offset pulse signal. This allows the reverse-offset sensing area to capture the reverse-offset pulse information more sensitively and accurately, thereby improving the success rate and accuracy of the reverse-offset pulse detection.

[0049] 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.

[0050] This design ensures uniform specifications for each sensing area, facilitating standardized production and assembly. Furthermore, the rational sizing allows for a better fit to the wrist pulse location, ensuring that each sensing area effectively captures pulse signals, reducing signal deviations caused by improper sizing and improving the accuracy and reliability of pulse pressure measurement during Traditional Chinese Medicine (TCM) pulse diagnosis.

[0051] Further preferably, the anti-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, with an extension length along the length of the flexible base layer of 3-15mm, preferably 7mm in this embodiment; and an extension amplitude along the width direction of 3-50mm, preferably 18mm in this embodiment. This unified geometric shape ensures that the anti-guan pulse sensing area and the other sensing areas maintain consistent mechanical properties when fitted to 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 anti-guan pulse position, improve the ability to capture the anti-guan pulse signal, provide more comprehensive and accurate diagnostic information for Traditional Chinese Medicine pulse diagnosis, and enhance the reliability of diagnosis.

[0052] 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 kept at an equidistant interval of 0.5-3.0 mm from the edge of the sensing area, and 1 mm is preferred in this embodiment; a circumferentially continuous stress buffer zone 422 is formed. It can effectively disperse the stress applied to the sensing area by the outside world, avoid the stress directly acting on the 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,

[0053] Further preferably, the anti-offset sensing connection portion forms a gradual transition structure, wherein the expansion amplitude near the first end of the guan pulse sensing area is greater than the expansion amplitude at the second end connected to the anti-guan pulse sensing area, and the expansion amplitude ratio is 1.5:1 to 4:1. The preferred ratio in 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 and damage to the connection portion. At the same time, the gradual transition makes the connection between the connection portion and different sensing areas more natural, reduces signal transmission interference, and ensures accurate acquisition of the anti-offset pulse signal.

[0054] Further preferably, the expansion amplitude of the second end of the gradual transition structure is 5mm to 8mm. This amplitude range ensures a good connection with the reverse pulse sensing area while effectively dispersing stress and avoiding excessive localized stress. Furthermore, the appropriate expansion amplitude helps stabilize signal transmission, improves the quality of reverse pulse signal acquisition, and enhances the accuracy of reverse pulse detection in Traditional Chinese Medicine pulse diagnosis.

[0055] Preferably, the flexible sealed cavity is formed by hot-melt sealing around a double-layer flexible membrane 31. The double-layer membrane 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 membrane has a stronger ability to resist damage when subjected to external pressure or friction, which extends the service life of the airbag and improves the reliability and durability of the entire pulse diagnosis instrument. The double-layer flexible membrane is sealed around to form a closed airbag cavity 311. Hot-melt sealing is a reliable and efficient sealing method. The double-layer flexible membrane is sealed around by hot-melt to form a closed airbag cavity. This sealing method can ensure the sealing of the airbag cavity, prevent gas leakage from the edges, 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, allowing the pulse diagnosis instrument to accurately control the pressure applied to the wrist pulse and improve the accuracy of pulse diagnosis.

[0056] A heat-sealed overlapped region 312 is provided in the middle of the airbag's interior. The overlapped overlapped region connects the airbag's interior at both ends, further enhancing the airbag's structural stability. This overlapped region tightly bonds the two membrane layers in this area, increasing the overall strength of the airbag and enabling it to better withstand both internal and external pressures.

[0057] A through-hole cable routing channel 313 is provided within the overlapped, sealed, and heat-sealed area, providing dedicated space for wiring. This design allows for orderly wiring arrangement, preventing a cluttered distribution of wiring on the airbag surface, reducing mutual interference and wear between wiring, and lowering the probability of wiring failure. Furthermore, the through-hole cable routing channel facilitates wiring installation and maintenance, improving production efficiency and product reliability.

[0058] The middle region of the double-layer flexible membrane is equipped with an inlet and outlet nozzle 314, which extends through the single-layer flexible membrane and communicates with the inner cavity of the airbag, allowing for the injection and exhaust of gas. This design allows the pulse diagnosis device to conveniently control the air pressure within the airbag. By injecting or exhausting gas into the airbag, the device simulates the varying pressures of a physician's finger on the pulse, thereby accurately detecting different pulse conditions. The positioning and structural design of the inlet and outlet nozzles ensure smooth gas flow, ensuring accurate and stable air pressure control.

[0059] The pressure detection nozzle 315, spaced apart from the inlet and outlet nozzles, penetrates the single-layer flexible membrane and communicates with the airbag lumen, serving as a connection to a pressure sensor. This spacing prevents gas flow from the inlet and outlet nozzles from interfering with pressure detection, ensuring that the pressure sensor can accurately measure pressure changes within the airbag. The connection between the pressure detection nozzle and the airbag lumen enables the pressure sensor to obtain real-time pressure information within the airbag, providing accurate data support for the pulse diagnosis instrument, thereby improving the accuracy and reliability of pulse diagnosis.

[0060] In summary, the various technical features of the airbag used in this wristband-type Chinese medicine pulse diagnosis instrument cooperate with each other to achieve the high sealing and stability of the airbag, reasonable circuit layout, and accurate air pressure control and pressure detection functions, providing strong support for the objectivity and standardization of Chinese medicine pulse diagnosis.

[0061] More preferably, the inlet and outlet nozzles 314 extend 3-6mm, preferably 5mm, from the inner cavity of the airbag; the pressure detection nozzle 315 extends 5-10mm, preferably 8mm. This can prevent the membrane from laminating and affecting its use, ensuring smooth and accurate gas flow and pressure detection.

[0062] Further preferably, an air inlet and outlet avoidance groove 316 is provided at the end of the air inlet and outlet nozzle and the pressure detection nozzle in the airbag cavity. This can prevent the air inlet and outlet nozzle and the pressure detection nozzle from being squeezed when they are attached to the wrist, ensure that air inlet and outlet and pressure detection are not hindered, and improve the accuracy of pulse diagnosis.

[0063] Further preferably, the intake and exhaust avoidance grooves are provided with N number of the intake and exhaust avoidance grooves along the circumferential direction, and N is greater than or equal to 2.

[0064] Furthermore, 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 significantly improve the accuracy and reliability of pulse diagnosis data.

[0065] 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.

[0066] Furthermore, the distance between the wiring channel and the center line connecting the inlet and outlet nozzles and the pressure detection nozzle is preferably 6-15 mm, preferably 11 mm. This prevents interference between the wiring, the gas channel, and the detection components, ensures stable signal transmission, and improves the measurement accuracy and reliability of the pulse diagnosis instrument.

[0067] Furthermore, preferably, the width of the wiring channel is 0.1-2 mm, preferably 0.2 mm, which can ensure smooth wiring and prevent excessive bending and damage, while also effectively utilizing the internal space of the airbag, reducing mutual interference between different lines, and ensuring stable signal transmission.

[0068] Furthermore, an insulating layer 317 is preferably provided within the wiring channel in the laminated, sealed, and heat-sealed area. This layer is made of a material with excellent insulation and flexibility (e.g., PVC film). This layer effectively isolates the wiring within the wiring channel, preventing short circuits or signal interference between lines while maintaining the channel's flexibility and sealing, ensuring stable signal transmission and improving the pulse diagnosis device's measurement accuracy and reliability.

[0069] Further preferably, the flexible membrane body is made of PVC material, and the thickness of the single-layer flexible membrane body is 0.1-0.5mm; preferably, 0.3mm; and the outer surface of the flexible membrane body is smooth and flat, at least the inner surface of the heat-sealed edge of the flexible membrane body is concave and convex twill, and the convex design of the inner surface is conducive to heat-sealed connection.

[0070] In summary, the present invention significantly improves the accuracy of traditional Chinese medicine pulse diagnosis through innovative designs such as a flexible base layer and a reverse-off sensing area, and solves the problem of interference with traditional collected signals; the double-layer airbag optimizes sealing and line layout, improving 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.

[0071] 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 scope of protection of the present invention.

Claims

1. A wrist-type Chinese medicine pulse diagnosis instrument, characterized in that: include: The wristband unit includes an arc-shaped self-decoupling body and an inflatable airbag assembly provided on the inner side of the arc-shaped self-decoupling body, a flexible cuff is provided on the outer side of the inflatable airbag assembly, and a pulse collection unit is provided between the inner surface of the flexible cuff and the inflatable airbag assembly; The display and control body is connected to the wristband unit and is internally provided with a controller, an air pressure regulating module, a PCB board and a power supply; The inflatable airbag assembly includes a flexible sealed cavity, which is provided with a gas channel and a functional interface portion, and the functional interface portion includes a gas inlet and outlet connected to the air pressure regulating module and a pressure detection interface; The pulse acquisition unit 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 via a flexible conductive structure; 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 a 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; and further includes a reverse Guan pulse sensing connection portion extending from a branch corresponding to the Guan pulse sensing area, with the reverse Guan pulse sensing area provided at the end of the reverse Guan pulse sensing connection portion; Each sensing area is connected to a corresponding conductive connection portion, 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 via the conductive connection portion and a conductive component on the surface of the reverse sensing connection portion, and adjacent conductive components are encapsulated and fixed by insulating sealant. 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 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; A through-type stress buffer groove is provided on the reverse-closing sensing connection portion. The stress buffer groove is arranged along the extension direction of the reverse-closing sensing connection portion, and its groove body profile 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-closing pulse position detection of the radial artery at the wrist; 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 operating button and a status display device.

2. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 1, 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, forming a circumferentially continuous stress buffer zone.

3. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 1, characterized in that: The anti-offset 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-offset sensing area, and the expansion amplitude ratio is 1.5:1 to 4:

1.

4. 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; a superimposed sealing heat-sealing area is provided in the middle of the flexible sealing cavity, and 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; an air inlet and outlet nozzle is installed on the gas inlet and outlet in the middle area of ​​the double-layer flexible membrane, which passes through the single-layer flexible membrane 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, passes through the single-layer flexible membrane and is connected to the flexible sealing cavity, and is used to connect the thin film pressure sensor in the display and control body.

5. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 4, 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; there are N inlet and exhaust avoidance grooves along the circumferential direction, and N is greater than or equal to 1.

6. The wrist-type Chinese medicine pulse diagnosis instrument according to claim 4, 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 a flexible PVC film.

7. The wrist-type Chinese medicine pulse diagnosis instrument according to any one of claim 4, characterized in that: The flexible membrane is made of PVC material, and the thickness of a single layer of the flexible membrane is 0.1-0.5 mm. The outer surface of the flexible membrane is smooth and flat, and at least the inner surface of the heat-sealed edge of the flexible membrane is concave-convex twill.

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