Blood pressure detection device with blood vessel positioning function and blood vessel positioning method

Abstract

The invention discloses a blood pressure detection device with a blood vessel positioning function and a blood vessel positioning method, and belongs to the technical field of medical detection equipment. The ultrasonic blood pressure detection cuff comprises a cuff body, an air bag and a Doppler blood flow detection module, the Doppler blood flow detection module comprises a position adjusting module and an ultrasonic sensor, the track direction of the position adjusting module is consistent with the winding direction of the cuff, and accurate positioning of the sensor can be achieved. Blood flow signals are detected through the Doppler ultrasonic technology, and the blood pressure can be measured more accurately in combination with the air bag pressurization and decompression process. The system can be widely applied to the scenes of family medical treatment, clinical diagnosis, ICU, operating rooms and the like.

Description

Technical Field

[0002] This invention relates to the field of medical testing equipment technology, specifically to a blood pressure monitoring cuff based on ultrasound technology and a Doppler ultrasound blood pressure monitoring device including the cuff. Background Technology

[0004] Blood pressure is one of the most important physiological indicators of the human body. Accurate blood pressure measurement is crucial for disease diagnosis, disease monitoring, and health assessment. Currently, the most widely used blood pressure measurement methods in clinical practice and at home are the Korotkoff sound method and the oscillometric method. The Korotkoff sound method determines blood pressure by listening to arterial pulsations with a stethoscope, but it is easily affected by human factors, and the measurement accuracy depends on the operator's experience. The oscillometric method calculates blood pressure by detecting the cuff pressure oscillation wave; however, when the patient's arteries have poor elasticity, the measurement error is relatively large.

[0005] Doppler ultrasound blood pressure measurement uses the Doppler effect of ultrasound waves to measure blood pressure. The core of it is to determine the timing of arterial opening by detecting changes in blood flow velocity, thereby determining systolic and diastolic blood pressure.

[0006] Doppler ultrasound blood pressure measurement is difficult to adjust precisely according to the different arm sizes and artery positions of different subjects, and the measurement results are prone to deviation due to inaccurate alignment between the sensor and the artery.

[0007] In home use scenarios, determining whether the cuff is in the correct position and providing adjustment prompts is also a technical problem that needs to be solved. Summary of the Invention

[0009] The technical solution of this application overcomes the defects of the prior art and aims to provide an ultrasonic blood pressure detection cuff and detection main module that can accurately adjust the relative position of the ultrasonic sensor and the blood vessel to improve the accuracy of blood pressure measurement.

[0010] This invention proposes a blood pressure detection device with vascular positioning function, comprising an ultrasonic blood pressure detection cuff and a main detection module. The ultrasonic blood pressure detection cuff includes: a cuff body, an air bladder, and a Doppler blood flow detection module. The air bladder is installed inside the cuff body. The Doppler blood flow detection module is installed on the cuff body. The Doppler blood flow detection module includes a position adjustment module and an ultrasonic sensor. The position adjustment module includes a track and a sliding platform, the sliding platform being able to slide along the track. The ultrasonic sensor is fixed on the sliding platform. The extension direction of the track is consistent with the winding direction of the air bladder cuff. In use, the sliding direction of the sliding platform is consistent with the winding direction of the air bladder cuff. The main detection module includes a blood pressure detection module, a control module, and a Doppler blood flow detection module. The main detection module includes an electrical signal interface, which is connected to the ultrasonic sensor via an electrical signal line. The main detection module includes an air inlet, which is connected to the airbag via an air tube. The blood pressure detection module includes an air pump, an air valve, and a pressure sensor. The air pump, air valve, pressure sensor, and airbag are connected via an air tube. The control module is electrically connected to the pressure sensor signal processing module, the air valve, and the air pump. The Doppler blood flow detection module includes an ultrasonic signal processing module and a position offset analysis module. The ultrasonic signal processing module acquires the electrical signal converted by the ultrasonic sensor, which is converted from the received ultrasonic signal by the sensor's transducer. The module performs professional processing and analysis on the electrical signal to acquire the Doppler signal generated by blood flowing in the blood vessels. The position offset analysis module analyzes the Doppler signal to obtain the relative positional relationship between the ultrasonic sensor and the blood vessel.

[0011] Technical benefits: By setting up a track and sliding platform, the position of the ultrasonic sensor relative to the target blood vessel can be manually or automatically fine-tuned even after the blood pressure cuff is already strapped to the user's arm, ensuring precise alignment and improving signal quality and measurement accuracy. The position offset analysis module can detect whether the position is correct. This eliminates the need to re-tie the cuff; position adjustments can be made directly on the cuff.

[0012] To facilitate the clear presentation of positional offset results, this invention proposes that the Doppler blood flow detection module includes a positional offset indication module, which includes a voice prompt module.

[0013] With the voice prompt module, it is easy to notify the user whether the location is correct.

[0014] To clearly indicate the position offset result, this invention proposes that the position offset indicator module include LED beads or a display screen. With a display screen or indicator light, the direction or magnitude of the offset or adjustment can be given.

[0015] To ensure stability and ease of movement of the sliding platform, the ultrasound blood pressure monitoring cuff also includes a track support. The track comprises two slide rails, and the track support includes four mounting support columns and a support plate. The support plate has a hollow center, and the four mounting support columns are located at the edges of the support plate. The support plate is mounted on the cuff body, and each end of the track is connected to one of the two mounting support columns. The tracks are parallel to each other and can be straight or curved. The track includes track A and track B, which are parallel to each other. Each end of the sliding platform includes a channel A and a channel B. Track A passes through channel A, and track B passes through channel B; alternatively, tracks A and B can be curved. Curved tracks A and B better adapt to the shape of the user's arm.

[0016] To facilitate obtaining the direction and magnitude of the positional offset, this invention proposes the following: the relative positional relationship between the ultrasonic sensor and the blood vessel is the distance between the ultrasonic sensor and the brachial artery; State A10: at position L1, the position offset analysis module obtains the distance D1 between the ultrasonic sensor and the brachial artery; State A11: the sliding platform moves from position L1 to position L2; State A20: at position L2, the position offset analysis module obtains the distance D2 between the ultrasonic sensor and the brachial artery; State A30: the position offset analysis module analyzes the magnitude of distances D1 and D2, and provides a prompt indicating whether the movement direction from position L1 to position L2 is correct; the prompt indicating whether the movement direction is correct is given through voice playback by the position offset indicator module; or through the display module. By comparing the strength of the signals at positions L1 and L2 through two measurements, the required offset direction and magnitude can be obtained.

[0017] To facilitate obtaining the direction and magnitude of the positional offset, this invention proposes: State A101: The positional offset analysis module analyzes the magnitude of the distance D1 and provides a prompt indicating whether position L1 is correct; the prompt indicating whether position L1 is correct is provided via voice prompt by a voice prompt module; or the prompt indicating whether position L1 is correct is provided via a display module. By directly measuring the offset of two blood vessels, the direction and magnitude of the required offset can be directly obtained.

[0018] To facilitate the acquisition of location information, this invention proposes that the ultrasonic sensor includes: an A ultrasonic sensor and a B ultrasonic sensor. The A and B ultrasonic sensors can operate in a fixed transmit or receive mode, or switch to a time-division mode, where the transmitter becomes a receiver and the receiver becomes a transmitter. This allows for operation in multiple modes, measurement of data from various modes, and acquisition of the direction and amount of blood vessel positional offset.

[0019] To quickly obtain location information, this invention proposes that the ultrasonic sensor includes: an A ultrasonic sensor, a B1 ultrasonic sensor, and a B2 ultrasonic sensor. The A ultrasonic sensor is positioned at the center perpendicular line of the B1 and B2 ultrasonic sensors. The A, B1, and B2 ultrasonic sensors are fixed on the sliding platform; the three ultrasonic devices can form a triangular positioning relationship, directly obtaining the offset direction and magnitude relative to the blood vessel.

[0020] To quickly obtain position information and adjustment direction or adjustment position size, this invention proposes the following: State B10: The position offset analysis module obtains the distance D1 between the ultrasonic sensor and the blood vessel; State B20: After moving the position, the position offset analysis module obtains the distance D2 between the ultrasonic sensor and the blood vessel; State B30: The position offset analysis module analyzes the magnitude of distances D1 and D2 and provides a prompt indicating whether the position is correct; the movement direction prompt is given in voice form through the voice prompt module; or the movement direction prompt is given through the display module; or when the position is correct, the position is displayed via LED.

[0021] With voice or LED display indicating the position adjustment, users can easily adjust the offset.

[0022] To quickly adjust the direction or position, this invention proposes: a sliding platform equipped with three LED beads; or the three LED beads are the same color, and if the position is correct, the middle LED bead lights up while the others are off; or the middle LED bead is a different color from the others, and if the position is correct, the middle LED bead lights up while the others are off. Using these LED beads and simple components, not only is the direction of the offset indicated, but the adjustment can also be directly fed back to determine if it is in place.

[0023] The ultrasonic blood pressure monitoring cuff includes a circuit board mounted on surface A of a sliding platform. The circuit board is electrically connected to an ultrasonic sensor via wires. A Doppler blood flow detection module and a main detection module can be mounted on the circuit board. The sliding platform of the ultrasonic blood pressure monitoring cuff includes a through-hole; one end of the ultrasonic sensor is mounted on the circuit board, and the other end of the ultrasonic sensor passes through the through-hole. The ultrasonic blood pressure monitoring cuff also includes an elastic component; the ultrasonic sensor is mounted on one end of the elastic component, and the other end of the elastic component is mounted on the sliding platform.

[0024] To ensure good contact between the ultrasonic sensor and the skin, this invention proposes that the ultrasonic blood pressure monitoring cuff also includes a Doppler blood flow detection module mounting area and an airbag mounting area; the Doppler blood flow detection module mounting area and the airbag mounting area do not overlap, the Doppler blood flow detection module mounting area includes a hole, and one end of the ultrasonic sensor contacts the detection area through the hole.

[0025] The present invention proposes that: one end of the air guide tube is connected to the airbag, and the other end of the air guide tube is connected to an external detection device; it also includes an electrical signal line, one end of which is connected to the electrical signal of the ultrasonic sensor, and the other end of which is connected to the electrical signal of the external detection device.

[0026] To protect the internal components, the present invention proposes that the ultrasonic blood pressure monitoring cuff also include a protective shell, which covers the circuit board and the sliding platform.

[0027] This solution also includes a protective shell that can completely cover the circuit board and the sliding platform.

[0028] To optimize the contact pressure between the sensor and the skin, this invention proposes that the ultrasonic blood pressure monitoring cuff further include an elastic component, with the ultrasonic sensor mounted at one end of the elastic component and the other end of the elastic component mounted on a sliding platform.

[0029] To better configure the track, this invention proposes that it also includes a track support bracket and two slide rails. The track support bracket includes four mounting support columns and a support plate with a central cutout; the four mounting support columns are located at the edge of the support plate; the support plate is mounted on the cuff body, and each end of the track is connected to two mounting support columns. The two tracks are parallel to each other, and their shape can be either straight or curved.

[0030] A method for vascular localization based on a blood pressure detection device, wherein the relative positional relationship between the ultrasonic sensor and the blood vessel is the distance between the ultrasonic sensor and the brachial artery, includes the following steps: Step A10: The sliding platform is at position L1, and the distance D1 between the ultrasonic sensor and the brachial artery is obtained by the position offset analysis module; Step A20: The detection main module determines whether the relative position between the ultrasonic sensor and the blood vessel is suitable based on the distance D1 obtained by the ultrasonic sensor and the brachial artery; if the relative position between the ultrasonic sensor and the blood vessel is suitable, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30; if the relative position between the ultrasonic sensor and the blood vessel is not suitable, a prompt is given to move the sliding platform, and the process proceeds to step A40; Step A30: The detection main module simultaneously performs oscillometric blood pressure detection, and at the same time, the Doppler blood flow detection module detects the blood flow signal of the brachial artery, adjusts the data obtained by the oscillometric blood pressure detection based on the blood flow signal, and outputs the adjusted blood pressure value; Step A40: The sliding platform is moved from position L1 to position L2.

[0031] Step A40 is followed by step A50: when the sliding platform is at position L2, the distance D2 between the ultrasonic sensor and the brachial artery is obtained by the position offset analysis module.

[0032] Step A60: The main detection module obtains the distance D2 between itself and the brachial artery based on the ultrasonic sensor, and determines whether the distance D2 is appropriate; if the distance D2 is appropriate, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30; if the distance D2 is inappropriate, a prompt is given to move the sliding platform, and the process proceeds to step A40.

[0033] After step A60, if distance D2 is not suitable, a prompt for moving the sliding platform is given. Before entering step A40, step A70 is also included: the position offset analysis module analyzes the relationship between distance D1 and distance D2, determines whether the movement direction of position L1 to position L2 is correct, and gives a prompt whether the movement direction of position L1 to position L2 is correct.

[0034] Step A80: If the movement direction of L1 to position L2 is correct, then maintain the original movement direction and proceed to step A40; if the movement direction of L1 to position L2 is incorrect, then proceed to step A40 in the opposite direction of the original movement direction; whether the movement direction is correct is indicated by playing voice prompts through the voice prompt module of the position offset indicator module.

[0035] In step A80: Whether the movement direction is correct is indicated by the display module of the position offset indicator module. The display module includes a display screen and is electrically connected to the detection main module.

[0036] In step A80: Whether the moving direction is correct is indicated by the status of the three LED beads in the position offset indicator module.

[0037] In step A20: Whether the relative position of the ultrasound sensor and the blood vessel is suitable is indicated by the status of the LED beads of the position offset indicator module.

[0038] The three LEDs can be the same color or different colors. If the position is suitable or the movement direction is correct, the middle LED will light up while the other LEDs will not. Alternatively, if the middle LED is a different color from the others, and the position is suitable or the movement direction is correct, the middle LED will light up while the other LEDs will not.

[0039] This invention includes at least the following advantages: It achieves precise blood vessel alignment. Through the sliding platform and track design, the position of the ultrasonic sensor can be precisely fine-tuned after the cuff is worn, ensuring accurate alignment with the target blood vessel (such as the brachial artery). This enables real-time visualization of arterial structure and blood flow, solving the problem of difficulty in accurately aligning sensors with blood vessels in existing technologies. This provides a foundation for accurate blood pressure monitoring, with monitoring accuracy comparable to professional medical equipment.

[0040] Improving measurement accuracy and precise alignment means obtaining higher quality Doppler blood flow signals with a better signal-to-noise ratio, thus laying a physical foundation for the accurate calculation of subsequent blood pressure values, especially systolic blood pressure determined by the principle of blood flow reproduction.

[0041] Easy to operate and highly adaptable, this structure provides users or equipment with a convenient path to quickly find the optimal measurement point, whether adjusting manually or automatically. The curved track design and flexible mounting structure further enhance the device's adaptability to users with different arm sizes.

[0042] The integrated and modular design combines the sensing components, adjustment components, cuff, and airbag into one unit, and connects to the main control module through a standard interface, which facilitates production and maintenance and provides the hardware foundation for realizing intelligent and automated blood pressure measurement. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the usage state of Embodiment 1;

[0045] Figure 2 This is a schematic diagram of the sliding platform in Embodiment 1;

[0046] Figure 3 This is a schematic diagram of the sliding platform after it has reached the sliding position in Embodiment 1;

[0047] Figure 4 This is a schematic diagram of embodiment 2;

[0048] Figure 5 This is a three-dimensional schematic diagram of the Doppler blood flow detection module in Embodiment 2;

[0049] Figure 6 This is an exploded view of the Doppler blood flow detection module in Embodiment 2;

[0050] Figure 7 This is a partial schematic diagram of removing the Doppler blood flow detection module in Embodiment 2;

[0051] Figure 8 This is a schematic diagram of the support plate in Embodiment 2;

[0052] Figure 9 This is a partial schematic diagram of Embodiment 3;

[0053] Figure 10 This is a partial schematic diagram of Embodiment 4;

[0054] Figure 11 This is a partial schematic diagram of Embodiment 4;

[0055] Figure 12 This is a three-dimensional schematic diagram of the Doppler ultrasound blood pressure detection device in Embodiment 5;

[0056] Figure 13 This is a three-dimensional schematic diagram of the Doppler ultrasound blood pressure detection device in Embodiment 5;

[0057] Figure 14 This is a schematic diagram showing the relationship between the influence of ultrasound blood pressure cuff probe offset and the correction method. Detailed Implementation

[0059] The technical content of this application will be further described in detail below with reference to the accompanying drawings.

[0060] It should be noted that the following description of preferred embodiments of this application does not constitute any limitation on this application. The description of preferred embodiments is merely an illustration of the general principles of this application. The embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and technical features numbered with Arabic numerals 1, 2, 3, etc., and designations such as "A" and "B," are used for descriptive purposes only, for the convenience of explanation, and do not represent a temporal or spatial order; they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first," "second," and numbered with Arabic numerals 1, 2, 3, etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "several" means two or more, unless otherwise expressly and specifically defined.

[0062] Figure 14 This paper discusses the influence and correction methods of probe offset in ultrasound blood pressure monitoring cuffs.

[0063] like Figure 14 When the ultrasound sensor deviates from the position of the brachial artery, different deviations will have different effects on the ultrasound image or Doppler signal. When a deviation occurs, the type of deviation can be obtained by detecting the Doppler signal, and prompts for correction operations can be made.

[0064] This application detects abnormal changes in Doppler signals and provides doctors or examiners with voice, image, or light signals. Users can easily move the ultrasound sensor to obtain the correct position based on the prompts.

[0065] Because the brachial artery is located in the arm, basically along the arm's direction, by locking the probe's tilt angle and aligning the direction of the adjustment track with the cuff's wrapping direction, only one direction needs to be adjusted to achieve the desired effect. Figure 14 The various error types are fixed in a simple and clear manner, greatly reducing the difficulty of use.

[0066] like Figure 1In this embodiment of the ultrasonic blood pressure monitoring cuff, there are a cuff body 0110, an air bladder 0120, and a Doppler blood flow detection module 0130. The air bladder 0120 is built inside the cuff body 0110; the Doppler blood flow detection module 0130 is mounted on the outside of the cuff body 0110. The Doppler blood flow detection module 0130 includes a position adjustment module and an ultrasonic sensor. The ultrasonic sensor is an integrated probe assembly 0131, which includes an ultrasonic generator and a receiver.

[0067] like Figure 2 The position adjustment module includes tracks, such as tracks 0210 and 0211, and a sliding platform 0220. Both ends of the sliding platform 0220 are adapted and connected to tracks 0210 and 0211 respectively, allowing the sliding platform 0220 to slide reciprocally along the dual tracks. An ultrasonic sensor is fixed to the sliding platform 0220. The direction of the tracks is consistent with the winding direction of the cuff. In use, the sliding direction of the sliding platform 0220 is approximately consistent with the projection direction of the target blood vessel, such as the brachial artery, in the winding area.

[0068] like Figure 2 or Figure 3 The ultrasonic sensor fixed on the platform can be moved from the sliding platform 0220 by manual or electric drive. Figure 2 Fine-tune the position shown. Figure 3 The location shown allows for more precise coverage and detection of the target blood vessel 0310.

[0069] A meta-analysis published in JACC (Journal of the American College of Cardiology) showed that the difference between the brachial artery systolic blood pressure measured by the cuff and the direct measurement could reach 5.7 mmHg, while the diastolic blood pressure was 5.5 mmHg higher than the actual value. Other studies have shown that upper arm cuff blood pressure can misdiagnose 28% of elderly patients with isolated systolic hypertension. These findings highlight the importance of accurate cuff alignment with the target vessel. This design effectively solves the common industry problem of difficulty in precisely aligning the cuff with the target vessel, improving the accuracy of blood pressure measurement and reducing misdiagnosis to some extent.

[0070] like Figure 1A schematic diagram of an embodiment 1 in use is shown. The blood pressure monitoring device with vascular positioning function includes an ultrasonic blood pressure monitoring cuff and a main detection module 0111. The ultrasonic blood pressure monitoring cuff includes: a cuff body 0110, an air bladder 0120, and a Doppler blood flow detection module 0130. The air bladder is installed inside the cuff body; the Doppler blood flow detection module is installed on the cuff body. The ultrasonic sensor in the Doppler blood flow detection module 0130 can be an integrated probe assembly 0131, which includes an ultrasonic generator and a receiver.

[0071] Figure 1 In the diagram, 0150 represents a blood vessel, and 0160 represents a wire used for electrical signal connection between the integrated probe assembly and external circuit board A. 0170 represents a gas path used for communication with the air pump and pressure sensor on the main detection module. The air pump and pressure sensor can be located on circuit board A of the main detection module, or they can be electrically connected to circuit board A.

[0072] Figure 2 and Figure 3 This is a schematic diagram illustrating the working principle of the position adjustment module. The Doppler blood flow detection module includes a position adjustment module and an ultrasonic sensor. One end of the sliding platform 0220 is connected to the track 0210, and the other end of the sliding platform 0220 is connected to the track 0211. The sliding platform can slide on the track. The ultrasonic sensor is fixed on the sliding platform 0220. The direction in which the track extends is consistent with the winding direction of the air cuff. In use, the sliding direction of the sliding platform is consistent with the winding direction of the air cuff. Label 0260 represents a blood vessel.

[0073] like Figure 1 The main detection module includes a blood pressure detection module 0115, a control module, and a Doppler blood flow detection module. The main detection module includes an electrical signal interface, which is electrically connected to the ultrasonic sensor 0130 via an electrical signal line 0160. The main detection module 0111 includes an air inlet 0170, which is connected to the airbag via an air tube. The blood pressure detection module includes an air pump, an air valve, and a pressure sensor. The air pump, air valve, pressure sensor, and airbag are connected via an air tube. The control module is electrically connected to the pressure sensor signal processing module. The control module is electrically connected to the air valve; the control module is electrically connected to the air pump; the Doppler blood flow detection module includes an ultrasonic signal processing module and a position offset analysis module; the ultrasonic signal processing module acquires the electrical signal converted by the ultrasonic sensor, which is converted from the received ultrasonic signal by the sensor's transducer, and performs professional processing and analysis on the electrical signal to acquire the Doppler signal generated by blood flowing in the blood vessel; the position offset analysis module analyzes the Doppler signal to obtain the relative position offset and positional relationship between the ultrasonic sensor and the blood vessel.

[0074] like Figure 2 and Figure 3 By setting up a track and sliding platform, the position of the ultrasonic sensor relative to the target blood vessel can be manually or automatically finely adjusted when the blood pressure cuff is already attached to the user's arm, so that it is accurately aligned with the blood vessel, thereby improving signal quality and measurement accuracy. The position offset analysis module can detect whether the position is correct.

[0075] like Figure 2 The sliding platform 0220 and the blood vessel 0260 do not overlap in spatial position, resulting in poor test signal. Figure 3 By sliding the sliding platform 0220, the sliding platform 0220 and the blood vessel 0260 are made to coincide in spatial position, and the signal obtained by the test can meet the requirements.

[0076] like Figure 3 The sliding platform, by sliding, allows the sliding platform 0220 to more accurately align with the blood vessel 0310. By setting a track, the sliding platform allows the ultrasound sensor to slide, adjusting the relative position of the ultrasound sensor and the target blood vessel, ensuring accurate alignment and improving signal quality. Especially after the blood pressure cuff is already attached to the patient's arm, the above mechanism can be used to fine-tune the position for accurate blood vessel alignment.

[0077] To clearly indicate the positional offset, the Doppler blood flow detection module includes a positional offset indicator module, which in turn includes a voice prompt module. This voice prompt module allows the user to easily be notified whether the position is correct.

[0078] To clearly indicate the position offset result, this invention proposes that the position offset indicator module include LED beads or a display screen. With a display screen or indicator light, the direction or magnitude of the offset or adjustment can be given.

[0079] like Figure 2 and Figure 3 To ensure the stability and ease of movement of the sliding platform, the track includes track A 0210 and track B 0211, which are parallel. The two ends of the sliding platform each include a channel A and a channel B; track A passes through channel A, and track B passes through channel B. In some embodiments, tracks A and B are curved. Curved tracks A and B better adapt to the shape of the user's arm.

[0080] To facilitate obtaining the direction and magnitude of the positional offset, the relative positional relationship between the ultrasound sensor and the blood vessel is the distance between the ultrasound sensor and the brachial artery; State A10: At position L1, the position offset analysis module obtains the distance D1 between the ultrasound sensor and the brachial artery; State A11: The sliding platform moves from position L1 to position L2; State A20: At position L2, the position offset analysis module obtains the distance D2 between the ultrasound sensor and the brachial artery; State A30: The position offset analysis module analyzes the magnitude of distances D1 and D2, and provides a prompt indicating whether the movement direction from position L1 to position L2 is correct; the prompt indicating whether the movement direction is correct is given by playing a voice message through the position offset indicator module; or by the display module.

[0081] By comparing the strength of the signals at position L1 and position L2 through two measurements, the direction and magnitude of the required offset can be obtained.

[0082] To facilitate obtaining the direction and magnitude of the position offset, in state A101: the position offset analysis module analyzes the magnitude of the distance D1 and provides a prompt indicating whether the position L1 is correct; the prompt indicating whether the position L1 is correct is given by playing a voice prompt through the voice prompt module; or the prompt indicating whether the position L1 is correct is given by the display module.

[0083] By directly measuring the offset of the blood vessels twice, the direction and magnitude of the required offset can be obtained directly.

[0084] like Figure 9 This is a schematic diagram of two ultrasonic sensor embodiments. To facilitate obtaining position information, the ultrasonic sensors include: an A ultrasonic sensor 0910 and a B ultrasonic sensor 0920, with the blood vessel 0930 located below the ultrasonic sensors. Modern ultrasonic sensors can operate in a fixed transmit or receive mode; they can also operate in a time-division mode, that is, switching between transmit and receive modes in a time-division manner, with the transmitter acting as a receiver and the receiver as a generator. Ultrasonic sensors can operate in multiple modes, measuring data from multiple modes to obtain the positional offset direction and amount of the blood vessel.

[0085] like Figure 9 It operates by switching modes between ultrasonic sensor A 0910 and ultrasonic sensor B 0920. In state T10, ultrasonic sensor A 0910 emits an ultrasonic signal; in state T20, ultrasonic sensors A 0910 and B 0920 switch to receiving mode to receive the reflected signal of the ultrasonic signal, thereby obtaining the offset direction and size of the blood vessel 0930.

[0086] In state T30, ultrasound sensor B 0920 emits an ultrasound signal; in state T40, ultrasound sensor A 0910 and ultrasound sensor B 0920 switch to receiving mode to receive the reflected signal of the ultrasound signal and obtain the offset direction and size of the blood vessel 0930.

[0087] Figure 10 These are schematic diagrams of three ultrasonic sensor implementation examples; as shown. Figure 10 The ultrasonic sensor includes: an A ultrasonic sensor 1020, a B1 ultrasonic sensor 1010, and a B2 ultrasonic sensor 1030. The A ultrasonic sensor is positioned perpendicular to the center of the B1 and B2 ultrasonic sensors. These three ultrasonic devices can form a triangular positioning relationship, directly obtaining the direction and magnitude of the offset from the blood vessel.

[0088] To quickly obtain position information and adjustment direction or adjustment magnitude, the system operates as follows: State B10: The position offset analysis module obtains the distance D1 between the ultrasound sensor and the blood vessel; State B20: After moving the position, the position offset analysis module obtains the distance D2 between the ultrasound sensor and the blood vessel; State B30: The position offset analysis module analyzes the magnitudes of distances D1 and D2 and provides a prompt indicating whether the position is correct. The movement direction prompt is given via voice through the voice prompt module; or via the display module; or, if the position is correct, an LED display indicates that the position is correct. With voice or LED display of the position adjustment amount, the user can easily adjust the offset.

[0089] To quickly adjust the direction or position, the sliding platform is equipped with three LED beads; either the three LED beads are the same color, and if the position is correct, the middle LED bead lights up while the others are off; or the middle LED bead is a different color from the others, and if the position is correct, the middle LED bead lights up while the others are off. Using these LED beads and a simple device, not only is the direction of the offset indicated, but the adjustment is also directly fed back to ensure it is in place.

[0090] Figures 4 to 8 This is a schematic diagram of an embodiment of an ultrasonic blood pressure monitoring cuff. Figure 4 This is a schematic diagram of the extended state of an ultrasound blood pressure monitoring cuff. The cuff includes a cuff body 0410, an air bladder 0420, and a Doppler blood flow detection module 0430. The air bladder is installed inside the cuff body, and the Doppler blood flow detection module is installed on the cuff body.

[0091] Figure 5 This is a 3D schematic diagram of a Doppler blood flow detection module. (See diagram below.) Figure 5The Doppler blood flow detection module 0430 is mounted on four mounting support columns 0580 of the support plate 0570. The support plate 0570 has a hollow center, and the holes 0520 formed by the hollow center are used to realize the signal interaction between the ultrasonic sensor and the blood vessel. The support plate 0570 also includes mounting holes 0530 for fixing the support plate 0570 and the cuff body 0410 together.

[0092] like Figure 6 The Doppler blood flow detection module includes a position adjustment module and an ultrasonic sensor 0641. The position adjustment module includes a track composed of slide rails 0621 and 0622, and a sliding platform 0630. The ultrasonic sensor 0641 is fixed on the sliding platform 0630, and the sliding platform can slide along the track. In use, the direction of the track is consistent with the winding direction of the airbag cuff, and the sliding direction of the sliding platform is also consistent with it.

[0093] like Figure 6 To facilitate the installation of wires, circuit board 0650 is used to fix the wires connected to the outside. The circuit board is mounted on side A 0635 of the sliding platform. The circuit board is connected to the ultrasonic sensor via wires.

[0094] After setting up the circuit board, not only can lead connection terminals be laid out, but also necessary circuits can be integrated. For example, for Doppler ultrasound blood flow detection scenarios, a signal amplification circuit can be integrated to improve the signal strength of the ultrasound sensor. This type of circuit can solve the problem of unstable signal strength caused by the distance between the probe and the blood vessel and signal transmission loss. Alternatively, an acquisition circuit can be used to convert analog signals into digital signals, providing a foundation for subsequent optimization of signal processing efficiency and accuracy using digital signal processing technology. Just like in a wearable Doppler ultrasound blood flow monitoring system, the PCB substrate, as the core carrier component, integrates relevant circuits to realize real-time monitoring of blood flow information.

[0095] like Figure 6 To better set up the track, the track bracket includes four mounting support columns 0680 and a hollow support plate 0628 in the middle. The hollow design facilitates contact between the ultrasonic sensor and the test subject's skin. The four mounting support columns are located at the edge of the support plate. The track includes two slide rails, and the support columns 0680 are used to support and connect slide rails 0621 and 0622.

[0096] like Figure 7 To facilitate contact between the ultrasonic sensor and the test subject's skin, the cuff body 0410 includes a non-overlapping Doppler blood flow detection module mounting part 0710 and an airbag mounting part; wherein the Doppler blood flow detection module mounting part is provided with a hole 0711, through which one end of the ultrasonic sensor passes to directly contact the detection part.

[0097] like Figure 8 The support plate 0810 is installed on the cuff body, and the two ends of the track are respectively connected to two mounting support columns; the support plate includes mounting holes 0830, and the support plate is connected and fixed to the cuff body by sewing or pressing. The track includes two parallel tracks A 0821 and B 0822, and the tracks are straight or curved.

[0098] like Figure 1 One end of the air duct is connected to the airbag, and the other end of the air duct is connected to an external detection device; it also includes an electrical signal line, one end of which is connected to the ultrasonic sensor, and the other end of which is connected to the external detection device.

[0099] like Figure 6 As shown, a protective shell 0691 is also provided to protect the internal circuitry and ultrasonic sensor, which covers the circuit board 0650 and the sliding platform 0630.

[0100] like Figure 6 To facilitate the installation of the wires and the ultrasonic sensor, the circuit board 0650 is mounted on the A side of the sliding platform, and the sliding platform has a through hole 0639; one end of the ultrasonic sensor 0641 is mounted on the circuit board, and the other end passes through the through hole.

[0101] To optimize the contact pressure between the sensor and the skin, the ultrasonic blood pressure monitoring cuff also includes an elastic component, with the ultrasonic sensor mounted at one end of the elastic component and the other end of the elastic component mounted on a sliding platform.

[0102] To better set up the track, a track bracket and two slide rails are also included. The track bracket includes four mounting support columns and a support plate with a central cutout. The four mounting support columns are located at the edge of the support plate. The support plate is mounted on the cuff body, and each end of the track is connected to two mounting support columns. The two tracks are parallel to each other and can be configured as either straight lines or curves.

[0103] like Figure 4 and Figure 5 The ultrasonic blood pressure monitoring cuff includes a cuff body 0410, an air bladder 0420, and a Doppler blood flow detection module 0430. The Doppler blood flow detection module 0430 is mounted on the cuff body 0410 via four mounting support columns 0580 on a support plate 0570. The support plate 0570 has a hole 0520 for ultrasonic signal transmission and a mounting hole 0530 in the middle.

[0104] like Figure 6The exploded view shows that the Doppler blood flow detection module 0430 includes a position adjustment module and an ultrasonic sensor 0641. The position adjustment module includes slide rails 0621 and 0622 and a sliding platform 0630. The ultrasonic sensor 0641 is fixed to the sliding platform 0630 and can slide along the slide rails with the platform. The circuit board 0650 is mounted on surface A 0635 of the sliding platform and is connected to the ultrasonic sensor 0641 via wires. The track bracket consists of a support plate 0628 and a support column 0680, used to fix the slide rails 0621 and 0622. A protective shell 0691 covers the circuit board 0650 and the sliding platform 0630, providing protection for them.

[0105] like Figure 7 As shown, the cuff body 0410 is provided with a Doppler blood flow detection module mounting part 0710, which has a hole 0711 so that the front end of the ultrasonic sensor can contact the skin.

[0106] like Figure 8 As shown, the support plate 0810 includes mounting holes for mounting slide rails (0821, 0822) and mounting holes 0830 for connecting the cuff. The slide rails can be configured as straight or curved to accommodate the curvature of the arm.

[0107] like Figure 11 In a preferred flexible mounting method, the ultrasonic sensor 1110 is mounted on the sliding platform 1130 via an elastic component 1120. When the sensor comes into contact with human tissue 1151 and presses against the blood vessel 1160, the elastic component 1120 can adaptively maintain an appropriate contact pressure, avoiding problems such as excessive pressure compressing the blood vessel or insufficient pressure causing poor coupling.

[0108] like Figure 11 To control the pressure intensity between the ultrasonic sensor and the test subject, an elastic component is also included. The ultrasonic sensor 1110 is mounted on one end of the elastic component 1120, and the other end of the elastic component is mounted on the sliding platform 1130. The elastic component prevents excessive fluctuations in pressure between the ultrasonic sensor and the test subject due to the tightness of the detection cuff, ensuring that it maintains a suitable contact pressure with the measurement contact surface at all times.

[0109] like Figure 11 The ultrasonic sensor comes into contact with the tissue 1151. Under the action of the elastic component, a certain elastic pressure is applied to the tissue 1151. The ultrasonic sensor 1110 is aligned with the blood vessel 1160. The pressure will not compress the blood vessel due to excessive pressure, nor will it cause abnormal signal acquisition due to insufficient pressure.

[0110] Figure 12 This is a frontal perspective view of one embodiment of the main detection module. Figure 13This is a three-dimensional view of the back of one embodiment of the main detection module. (See attached image.) Figure 12 and Figure 13 As shown, a detection main module includes an electrical signal interface 1310 and an air delivery interface 1320. The electrical signal interface 1310 is connected to an ultrasonic sensor on the cuff via an electrical signal line for transmitting the electrical signal collected by the sensor. The air delivery interface 1320 is connected to an air bladder inside the cuff via an air tube for controlling the inflation and deflation of the air bladder, completing the inflation and deflation process required for blood pressure measurement.

[0111] A method for vascular localization based on a blood pressure detection device, wherein the relative positional relationship between the ultrasonic sensor and the blood vessel is the distance between the ultrasonic sensor and the brachial artery, includes the following steps: Step A10: The sliding platform is at position L1, and the distance D1 between the ultrasonic sensor and the brachial artery is obtained by the position offset analysis module; Step A20: The detection main module determines whether the relative position between the ultrasonic sensor and the blood vessel is suitable based on the distance D1 obtained by the ultrasonic sensor and the brachial artery; if the relative position between the ultrasonic sensor and the blood vessel is suitable, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30; if the relative position between the ultrasonic sensor and the blood vessel is not suitable, a prompt is given to move the sliding platform, and the process proceeds to step A40; Step A30: The detection main module simultaneously performs oscillometric blood pressure detection, and at the same time, the Doppler blood flow detection module detects the blood flow signal of the brachial artery, adjusts the data obtained by the oscillometric blood pressure detection based on the blood flow signal, and outputs the adjusted blood pressure value; Step A40: The sliding platform is moved from position L1 to position L2.

[0112] In some embodiments, step A40 is followed by step A50: the sliding platform is at position L2, and the distance D2 between the ultrasonic sensor and the brachial artery is obtained by the position offset analysis module.

[0113] In some embodiments, step A60 is included: the detection main module obtains the distance D2 between itself and the brachial artery based on the ultrasonic sensor, and determines whether the distance D2 is suitable; if the distance D2 is suitable, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30; if the distance D2 is not suitable, a prompt is given to move the sliding platform, and the process proceeds to step A40.

[0114] In some embodiments, after step A60, if distance D2 is not suitable, a prompt is given to move the sliding platform. Before entering step A40, step A70 is also included: the position offset analysis module analyzes the relationship between distance D1 and distance D2, determines whether the moving direction of position L1 to position L2 is correct, and gives a prompt whether the moving direction of position L1 to position L2 is correct.

[0115] In some embodiments, step A80 is included: if the movement direction of L1 to position L2 is correct, then the original movement direction is maintained and the process proceeds to step A40; if the movement direction of L1 to position L2 is incorrect, then the process proceeds to step A40 in the opposite direction to the original movement direction; whether the movement direction is correct is indicated by playing voice prompts through the voice prompt module of the position offset indicator module.

[0116] In step A80 of some embodiments: whether the movement direction is correct is indicated by the display module of the position offset indicator module, which includes a display screen and is electrically connected to the detection main module.

[0117] In step A80 of some embodiments: whether the moving direction is correct is indicated by the status of the three LED beads of the position offset indicator module.

[0118] In step A20 of some embodiments: whether the relative position of the ultrasound sensor and the blood vessel is suitable is indicated by the status of the LED beads of the position offset indicator module.

[0119] The three LEDs can be the same color or different colors. If the position is suitable or the movement direction is correct, the middle LED will light up while the other LEDs will not. Alternatively, if the middle LED is a different color from the others, and the position is suitable or the movement direction is correct, the middle LED will light up while the other LEDs will not.

[0120] This application discloses a blood pressure detection device and method with vascular positioning function, including an ultrasonic blood pressure monitoring cuff and a main detection module, belonging to the field of medical testing equipment technology. The ultrasonic blood pressure monitoring cuff includes a cuff body, an air bladder, and a Doppler blood flow detection module. The Doppler blood flow detection module includes a position adjustment module and an ultrasonic sensor. The track direction of the position adjustment module is consistent with the cuff winding direction, enabling precise sensor positioning. This device detects blood flow signals using Doppler ultrasound technology, combined with the air bladder's pressurization and depressurization process, enabling more accurate blood pressure measurement. It can be widely used in home healthcare, clinical diagnosis, ICU, operating rooms, and other scenarios. The display screen, LED lights, or voice prompts in the position offset indication module can indicate whether the current position and direction of movement are correct, improving usability and enabling more efficient vascular positioning, thus improving detection efficiency.

[0121] As shown in the accompanying drawings, the above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of the application specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A blood pressure detection device with vascular localization function, characterized in that, Includes an ultrasonic blood pressure monitoring cuff and a main detection module; the ultrasonic blood pressure monitoring cuff includes: the cuff body, the air bladder, and the Doppler blood flow detection module; An airbag is installed inside the cuff body; a Doppler blood flow detection module is installed on the cuff body; the Doppler blood flow detection module includes a position adjustment module and an ultrasonic sensor; the position adjustment module includes a track and a sliding platform, the sliding platform being able to slide along the track; the ultrasonic sensor is fixed on the sliding platform; the extension direction of the track is consistent with the winding direction of the airbag cuff, and in use, the sliding direction of the sliding platform is consistent with the winding direction of the airbag cuff; The main detection module includes a blood pressure detection module, a control module, and a Doppler blood flow detection module; The main detection module includes an electrical signal interface, which is connected to the ultrasonic sensor via an electrical signal line; the main detection module also includes an air guide interface, which is connected to the airbag via an air tube; the blood pressure detection module includes an air pump, an air valve, and an air pressure sensor; the air pump, air valve, air pressure sensor, and airbag are connected via an air tube. The control module is electrically connected to the air pressure sensor signal processing module; the control module is electrically connected to the air valve; the control module is electrically connected to the air pump. The Doppler blood flow detection module includes an ultrasonic signal processing module and a position offset analysis module. The ultrasonic signal processing module acquires the electrical signal converted by the ultrasonic sensor. This electrical signal is converted from the received ultrasonic signal by the transducer of the sensor. The module processes and analyzes the electrical signal to obtain the Doppler signal generated by blood flowing in the blood vessels. The position offset analysis module analyzes the Doppler signal to obtain the relative positional relationship between the ultrasound sensor and the blood vessel.

2. The blood pressure detection device with vascular positioning function according to claim 1, characterized in that, The Doppler blood flow detection module includes a position offset indicator module; The position offset indicator module includes a voice prompt module; Alternatively, the position offset indicator module may include LED beads or a display module.

3. The blood pressure detection device with vascular positioning function according to claim 1, characterized in that... Includes any one of the following features: TA10: The ultrasonic blood pressure monitoring cuff includes a circuit board, which is mounted on surface A of the sliding platform and is electrically connected to the ultrasonic sensor via wires; TA20: The ultrasound blood pressure monitoring cuff also includes a track support, the track including two slide rails, the track support including four mounting support columns and a support plate; the support plate has a hollow center, and the four mounting support columns are located at the edge of the support plate; the support plate is installed on the cuff body, and the two ends of the track are respectively connected to two mounting support columns; the tracks are parallel to each other, and the tracks are straight or curved. TA30: The sliding platform of the ultrasonic blood pressure monitoring cuff includes a through hole, one end of the ultrasonic sensor is mounted on the circuit board, and the other end of the ultrasonic sensor passes through the through hole; TA40: The main body of the ultrasonic blood pressure monitoring cuff includes a Doppler blood flow detection module mounting part and an airbag mounting part; the Doppler blood flow detection module mounting part and the airbag mounting part do not overlap, the Doppler blood flow detection module mounting part includes a hole, and one end of the ultrasonic sensor contacts the detection part through the hole; TA50: The ultrasound blood pressure monitoring cuff also includes an air tube, one end of which is connected to the air bladder and the other end of which is connected to an external detection device; it also includes an electrical signal line, one end of which is connected to the ultrasonic sensor and the other end of which is connected to the external detection device. TA60: The ultrasonic blood pressure monitoring cuff also includes a protective housing that covers the circuit board and the sliding platform; TA70: The ultrasound blood pressure monitoring cuff also includes an ultrasound sensor and an A2 ultrasound sensor, which are fixed to the sliding platform; TA80: The ultrasonic blood pressure monitoring cuff also includes an A ultrasonic sensor, a B1 ultrasonic sensor, and a B2 ultrasonic sensor. The A ultrasonic sensor is positioned at the center of the vertical line connecting the positions of the B1 and B2 ultrasonic sensors. The A, B1, and B2 ultrasonic sensors are fixed on the sliding platform. TA90: The ultrasonic blood pressure monitoring cuff also includes an elastic component, with the ultrasonic sensor mounted at one end of the elastic component and the other end of the elastic component mounted on a sliding platform.

4. The blood pressure detection device with vascular positioning function according to claim 2, characterized in that... Includes any one of the following features: TB10: There are 3 LED beads, which are positioned on the sliding platform. The 3 LED beads are the same color. TB20: There are 3 LED beads, which are located on the sliding platform. The middle LED bead is a different color from the other LED beads.

5. A method for vascular localization based on a blood pressure detection device, characterized in that: Based on any one of claims 1 to 4, the blood pressure detection device The relative positional relationship between the ultrasonic sensor and the blood vessel is the distance between the ultrasonic sensor and the brachial artery; Includes the following steps, Step A10: When the sliding platform is at position L1, the distance D1 between the ultrasound sensor and the brachial artery is obtained by the position offset analysis module; Step A20: The detection main module determines whether the relative position of the ultrasonic sensor and the blood vessel is suitable based on the distance D1 obtained by the ultrasonic sensor from the brachial artery. If the relative position of the ultrasonic sensor and the blood vessel is suitable, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30. If the relative position of the ultrasonic sensor and the blood vessel is not suitable, a prompt is given to move the sliding platform, and the process proceeds to step A40. Step A30: The main detection module simultaneously performs oscillometric blood pressure detection, while the Doppler blood flow detection module detects the blood flow signal of the brachial artery. The data obtained from the oscillometric blood pressure detection is adjusted based on the blood flow signal, and the adjusted blood pressure value is output. Step A40: Move the sliding platform from position L1 to position L2.

6. The vascular localization method based on a blood pressure detection device according to claim 5, characterized in that: Step A40 is followed by step A50: when the sliding platform is at position L2, the distance D2 between the ultrasonic sensor and the brachial artery is obtained by the position offset analysis module. Step A60: The main detection module determines whether the distance D2 between the ultrasonic sensor and the brachial artery is suitable. If the distance D2 is suitable, a prompt is given that blood pressure measurement can be performed normally, and the process proceeds to step A30. If the distance D2 is not suitable, a prompt is given to move the sliding platform, and the process proceeds to step A40.

7. The vascular localization method with a blood pressure detection device according to claim 5, characterized in that: After step A60, if distance D2 is not suitable, a prompt to move the sliding platform is given. Before proceeding to step A40, it also includes... Step A70: The position offset analysis module analyzes the relationship between distances D1 and D2, determines whether the direction of movement from position L1 to position L2 is correct, and provides a prompt indicating whether the direction of movement from position L1 to position L2 is correct. Step A80: If the movement direction of L1 to position L2 is correct, then maintain the original movement direction and proceed to step A40; if the movement direction of L1 to position L2 is incorrect, then proceed to step A40 in the opposite direction of the original movement direction; whether the movement direction is correct is indicated by playing voice prompts through the voice prompt module of the position offset indicator module.

8. The vascular localization method with a blood pressure detection device according to claim 7, characterized in that: In step A80: Whether the movement direction is correct is indicated by the display module of the position offset indicator module. The display module includes a display screen and is electrically connected to the detection main module.

9. The vascular localization method with a blood pressure detection device according to claim 7, characterized in that: In step A80: Whether the moving direction is correct is indicated by the status of the three LED beads in the position offset indicator module.

10. The vascular localization method with a blood pressure detection device according to claim 5, characterized in that: In step A20: Whether the relative position of the ultrasound sensor and the blood vessel is suitable is indicated by the status of the LED beads of the position offset indicator module.

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