Distributed external counterpulsation pressure monitoring device

Abstract

The invention discloses a distributed external counterpulsation pressure monitoring device, and relates to the technical field of medical rehabilitation equipment, the distributed external counterpulsation pressure monitoring device comprises a counterpulsation control host, an external air transmission device, an external air bag device and a pressure acquisition device, the external air transmission device is in communication connection with the counterpulsation control host, and the external air bag device is in pipeline connection with the external air transmission device; the pressure acquisition device is arranged on the in-vitro air bag device, and the pressure acquisition device is in communication connection with the counterpulsation control host; the pressure collecting device is arranged in the in-vitro air bag device, so that the working pressure value of each air bag can be accurately measured, air leakage of the air bags can be found in time, treatment can be quickly interrupted, a patient can be protected, a feedback loop can be formed when each air bag is inflated, and the safety of the patient is improved. Therefore, under the condition that the air bag is matched with limbs of different sizes to change the size of the air bag, the system can adopt different control strategies according to the feedback loop to adjust the inflation speed in a self-adaptive mode, and the optimal treatment effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of medical rehabilitation equipment technology, specifically a distributed external counterpulsation pressure monitoring device. Background Technology

[0002] External counterpulsation device (EECP) is a non-invasive medical device for treating ischemic diseases. EECP works based on the human cardiac cycle, sequentially inflating and deflating balloons in the lower limbs to improve blood circulation and increase blood perfusion to vital organs. During diastole: triggered by the R wave of the electrocardiogram, the EECP device inflates balloons from the distal end of the limb (e.g., the calf) to the proximal end (e.g., the thigh, buttocks) during diastole (when the heart is at rest). This inflation compresses the limb, forcing arterial blood from the limb and buttocks back into the aorta, thereby increasing aortic pressure and blood volume. This process is equivalent to providing a second blood supply to the body while the heart is at rest, creating a unique "double-pulse blood flow" effect—the phenomenon of "one heartbeat, two pulses." During systole: just before the heart begins to contract, the EECP device rapidly deflates its balloons. At this moment, the compressed limb blood vessels suddenly relax, and the peripheral resistance drops sharply, which facilitates the rapid injection of blood ejected from the ventricle into the limb arteries via the aorta. This process reduces the burden on the heart and improves the efficiency of blood circulation. Currently available airbag-type external counterpulsation devices generate constant pressure in the air tank. By controlling the opening time of the air tank and the airbag, the working airbag is inflated to achieve the expected working pressure. Since there is no pressure sensor on the airbag, the working pressure of the working airbag can only be adjusted at the initial design stage and at the factory through an external pressure sensor. This leads to the following problems with existing pneumatic external counterpulsation devices: 1. Unable to accurately sense the pressure of each airbag, resulting in poor precision in working pressure control; 2. If the airbag ruptures, the device cannot detect it, and the high-pressure gas poses a safety risk to the patient. 3. When people of different body types use the same set of airbags, the volume of the airbags will change. The device cannot adjust the inflation time by detecting changes in the pressure of the airbags, resulting in poor treatment effect. Therefore, a distributed external counterpulsation pressure monitoring device is needed to solve the problems mentioned in the background above. Summary of the Invention

[0003] The purpose of this invention is to provide a distributed external counterpulsation pressure monitoring device. By incorporating a pressure acquisition device within the external airbag device, the working pressure value of each airbag can be accurately measured. This allows for timely detection of airbag leaks, enabling rapid interruption of treatment to protect the patient. Furthermore, each airbag inflation creates a feedback loop, allowing the system to adaptively adjust the inflation rate based on different control strategies when the airbag volume is adjusted to match different limb sizes, thereby achieving optimal treatment results and solving the problems mentioned in the background.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a distributed external counterpulsation pressure monitoring device, comprising: a counterpulsation control host, an external gas delivery device, an external airbag device, and a pressure acquisition device, wherein the external gas delivery device is communicatively connected to the counterpulsation control host, the external airbag device is connected to the external gas delivery device via a pipeline, and the pressure acquisition device is installed on the external airbag device and is communicatively connected to the counterpulsation control host. The external airbag device includes: Arm airbag 1, arm airbag 2, hip airbag, thigh airbag 1, thigh airbag 2, calf airbag 1 and calf airbag 2; The pressure acquisition device includes: a microcontroller, an analog-to-digital converter, a low-pass filter, an amplifier circuit, a pressure sensor, a power management module, and a power supply structure. The microcontroller, analog-to-digital converter, low-pass filter, amplifier circuit, pressure sensor, power management module, and power supply structure are electrically connected to each other.

[0005] Preferably, the external airbag device includes an epidermis and an airbag layer. The airbag layer is installed inside the epidermis. The epidermis layer includes a surface layer, an adhesive layer, and a substrate layer. One side of the adhesive layer is fixedly connected to one side of the surface layer, and one side of the substrate layer is fixedly connected to the other side of the surface layer. The substrate layer matches the adhesive layer.

[0006] Preferably, an inner connector is installed outward on one side of the airbag layer, an outer connector is installed outward on the other side of the airbag layer, and a middle connector is installed on the inner wall of the airbag layer in the direction of the outer connector. The air inlet end of the middle connector is inserted into the air inlet end of the outer connector. After the airbag layer is folded, the air inlet end of the inner connector is inserted into the air inlet end of the middle connector.

[0007] Preferably, the outer wall of the inner connector is sealed and snapped into the inner wall of the middle connector, and a support block assembly is fixedly installed on the outer wall of the middle connector, with the outer wall of the support block assembly abutting against the inner wall of the outer connector.

[0008] Preferably, multiple elastic limiting rings are installed on the airbag layer, and the elastic limiting rings match the folded airbag layer.

[0009] Preferably, the pressure acquisition device is installed between the folded airbag layers, and a limiting groove is fixedly sleeved on the outside of the pressure acquisition device, with the limiting groove installed on the airbag layer.

[0010] Preferably, the power supply structure includes a rechargeable battery and a wireless charging module, with the wireless charging module electrically connected to the rechargeable battery.

[0011] Preferably, the pressure acquisition device further includes an NFC module and a wireless communication module, which are electrically connected to the microcontroller, analog-to-digital converter, low-pass filter, amplifier circuit, pressure sensor, power management module and power supply structure.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a pressure acquisition device in the external airbag device, enabling accurate measurement of the working pressure value of each airbag. It also allows for timely detection of airbag leaks, facilitating rapid interruption of treatment to protect the patient. Furthermore, it enables the formation of a feedback loop during airbag inflation, allowing the system to adaptively adjust the inflation speed based on different control strategies when the airbag volume is adjusted to match different limb sizes, thereby achieving the best therapeutic effect. 2. This invention utilizes topological principles to overlap the outer connector, middle connector, and inner connector to form a new connector, which is then connected to the external air supply pipe. This reduces damage to the outer surface of the airbag layer and improves the aesthetics of the external airbag device. At this point, the gap between the outer connector and the middle connector becomes a passage for air to enter one layer of the folded airbag layer, while the middle part of the inner connector becomes a passage for air to enter the other layer of the folded airbag layer. This structure solves two problems: first, it addresses the issue that the folded parts of the previously connected airbag layers may be obstructed by compression after the airbag layer is folded, affecting airflow; second, it allows both layers of the folded airbag layer to be inflated and deflated simultaneously through the external air supply pipe, making the inflation and deflation of the airbag layer faster and more stable. 3. In this invention, because the airbag layer is folded, an excellent installation position is formed in the airbag layer, which allows the pressure acquisition device to be installed in the sandwich after the airbag layer is folded and subjected to pressure from all directions of the airbag layer. This makes the data collected by the pressure acquisition device more accurate and reliable. At the same time, because the data collected by the pressure acquisition device is accurate and reliable enough, the pressure sensor of the pressure acquisition device does not need to be installed in the airbag layer, that is, there is no need to embed an interface in the airbag layer. This greatly reduces the processing difficulty of the airbag layer and improves the service life of the airbag layer. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the connection relationship between the counterpulsation control host and the pressure acquisition device in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 2 This is a schematic diagram showing the connection relationship between the external gas delivery structure and the external airbag device in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 3 This is a schematic diagram showing the connection relationship of internal components of the pressure acquisition device in a distributed external counterpulsation pressure monitoring device of the present invention; Figure 4 This is a schematic diagram of the main view of each component of the external airbag device in a distributed external counterpulsation pressure monitoring device of the present invention; Figure 5 This is a schematic diagram of the bottom side of each component of the external airbag device in the distributed external counterpulsation pressure monitoring device of the present invention; Figure 6 This is a schematic diagram of the structure of the airbag layer inside the external airbag device in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 7 This is a schematic diagram showing the installation position of the elastic limiting ring inside the external airbag device in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 8 This is a schematic diagram showing the installation position of the pressure acquisition device inside the external airbag device in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 9 This is a schematic cross-sectional view of the inner connector, middle connector, and outer connector in a distributed external counterpulsation pressure monitoring device of the present invention. Figure 10 This is a schematic diagram of the internal connector, middle connector, and external connector in a distributed external counterpulsation pressure monitoring device of the present invention.

[0014] In the diagram: 1. Antipulsation control unit; 2. External air supply device; 3. External airbag device; 301. Arm airbag one; 302. Arm airbag two; 303. Hip airbag; 304. Thigh airbag one; 305. Thigh airbag two; 306. Lower leg airbag one; 307. Lower leg airbag two; 308. Epidermis; 309. Airbag layer; 310. Surface layer; 311. Adhesive layer; 312. Adhesive layer; 313. Internal connector; 314. External connector 315. Connector; 316. Support block assembly; 317. Elastic limit ring; 4. Pressure acquisition device; 401. Microcontroller; 402. Analog-to-digital converter; 403. Low-pass filter; 404. Amplifier circuit; 405. Barometric pressure sensor; 406. Power management module; 407. Power supply structure; 408. Rechargeable battery; 409. Wireless charging module; 410. NFC module; 411. Wireless communication module; 5. Limiting slot. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1, as Figures 1 to 10 As shown: A distributed external counterpulsation pressure monitoring device includes: a counterpulsation control host 1, an external gas delivery device 2, an external airbag device 3, and a pressure acquisition device 4. The external gas delivery device 2 is communicatively connected to the counterpulsation control host 1, the external airbag device 3 is connected to the external gas delivery device 2 via a pipeline, and the pressure acquisition device 4 is installed on the external airbag device 3 and is communicatively connected to the counterpulsation control host 1. The external airbag device 3 includes: Arm airbag 1 301, Arm airbag 2 302, Hip airbag 303, Thigh airbag 1 304, Thigh airbag 2 305, Calf airbag 1 306 and Calf airbag 2 307; The pressure acquisition device 4 includes: a microcontroller 401, an analog-to-digital converter 402, a low-pass filter 403, an amplifier circuit 404, a pressure sensor 405, a power management module 406, and a power supply structure 407. The microcontroller 401, the analog-to-digital converter 402, the low-pass filter 403, the amplifier circuit 404, the pressure sensor 405, the power management module 406, and the power supply structure 407 are electrically connected to each other.

[0017] In this embodiment, the external air supply structure is connected to the external airbag device 3 through its own air supply pipe to inflate and deflate the external airbag device 3. The pressure acquisition device 4 is installed on the external airbag device 3 to collect the pressure information of the external airbag device 3 and transmit the information to the anti-pulse control host 1. The anti-pulse control host 1 analyzes the information and controls the external air supply structure to adjust the inflation and deflation of the external airbag device 3 according to the analysis results. The external airbag device 3 of the present invention includes an arm airbag 301, an arm airbag 302, a hip airbag 303, a thigh airbag 304, a thigh airbag 305, a calf airbag 306, and a calf airbag 307. When in use, they are worn on the corresponding parts of the patient. The hip airbag 303, thigh airbag 304, and thigh airbag 305 are relatively close to each other and can be connected together to form a larger whole. This can effectively prevent the device from falling off due to repeated inflation and deflation and the patient's movement during use. The pressure acquisition device 4 includes a microcontroller 401, an analog-to-digital converter 402, a low-pass filter 403, an amplifier circuit 404, a pressure sensor 405, a power management module 406, and a power supply structure 407. In use, the pressure sensor 405 acquires the pressure signal inside the external airbag device 3. Then, the amplifier circuit 404 amplifies the signal and suppresses common-mode noise. Next, the low-pass filter 403 filters out high-frequency noise higher than the effective frequency of the pressure signal. Then, the analog-to-digital converter 402 converts the analog quantity of the pressure signal into a digital signal. Finally, the microcontroller 401 converts the digital signal into data using a specified serial communication protocol and sends it to the counterpulsation control host. During this process, the power management module 406 and the power supply structure 407 distribute power to each module to supply power to each module. Specifically, the barometric pressure sensor 405 used in this invention is required to have a barometric pressure monitoring range of not less than 0-100kPa. When the pressure changes between 0kPa and 100kPa, it linearly outputs a voltage of 0-90mV. The amplifier circuit 404 can use an instrumentation amplifier INA125UA / 2K5 with a magnification factor of 30 to amplify the output voltage of the pressure sensor from (0, 90mV) to (0, 2.7V). The low-pass filter 403 uses a passive RC low-pass filter with a cutoff frequency of 100Hz. The digital-to-analog converter is an ADS1256 with a resolution of 24 bits and a sampling rate of 30kHz, which converts analog signals into digital signals. The digital-to-analog converter and the microcontroller 401 are connected via the SPI communication protocol to transmit digital signals to the microcontroller 401. The microcontroller 401 is an STM32F103C8T6. The microcontroller 401 forwards the received data to the counterpulsation control host via the USB protocol. The power management module 406 is a power chip that supplies power to various circuit components. The present invention incorporates a pressure acquisition device 4 in the external airbag device 3, which enables accurate measurement of the working pressure value of each airbag, timely detection of airbag leakage, and rapid interruption of treatment to protect the patient. Furthermore, it allows each airbag to form a feedback loop during inflation, enabling the system to adaptively adjust the inflation speed based on different control strategies when the airbag volume is changed to match different limb sizes, thereby achieving the best therapeutic effect.

[0018] Example 2, as Figures 4 to 10 As shown: The external airbag device 3 includes an epidermis 308 and an airbag layer 309. The airbag layer 309 is installed inside the epidermis 308. The epidermis 308 includes a surface layer 310, an adhesive layer 311, and a substrate layer 312. One side of the adhesive layer 311 is fixedly connected to one side of the surface layer 310, and one side of the substrate layer 312 is fixedly connected to the other side of the surface layer 310. The substrate layer 312 matches the adhesive layer 311.

[0019] An inner connector 313 is installed outward on one side of the airbag layer 309, and an outer connector 314 is installed outward on the other side of the airbag layer 309. A middle connector 315 is installed on the inner wall of the airbag layer 309 in the direction of the outer connector 314. The air inlet end of the middle connector 315 is inserted into the air inlet end of the outer connector 314. After the airbag layer 309 is folded, the air inlet end of the inner connector 313 is inserted into the air inlet end of the middle connector 315.

[0020] The outer wall of the inner connector 313 is sealed and snapped into the inner wall of the middle connector 315. The outer wall of the middle connector 315 is fixedly equipped with a support block assembly 316, and the outer wall of the support block assembly 316 abuts against the inner wall of the outer connector 314.

[0021] Multiple elastic limiting rings 317 are installed on the airbag layer 309, and the elastic limiting rings 317 match the folded airbag layer 309.

[0022] The pressure acquisition device 4 is installed in the interlayer of the folded airbag layer 309. The outer side of the pressure acquisition device 4 is fixedly sleeved with a limiting groove 5, which is installed on the airbag layer 309.

[0023] In this embodiment, when the external airbag device 3 is used, it needs to be wrapped around the corresponding limb of the patient and the adhesive layer 312 and the adhesive layer 311 are bonded together. The adhesive layer 312 and the adhesive layer 311 can be Velcro. By adjusting the bonding position of the adhesive layer 311 and the adhesive layer 312, the tightness of the external airbag device 3 around the patient can be adjusted. An inner connector 313 is installed outward on one side of the airbag layer 309, and an outer connector 314 is installed outward on the other side of the airbag layer 309. A middle connector 315 is installed on the inner wall of the airbag layer 309 in the direction of the outer connector 314. Therefore, during production, it is only necessary to open three holes at the designated positions of the relatively fixed shape of the airbag layer 309 and then install the corresponding connectors, which reduces the difficulty of producing the airbag layer 309. The air inlet of the middle connector 315 is inserted into the air inlet of the outer connector 314. After the airbag layer 309 is folded, the air inlet of the inner connector 313 is inserted into the air inlet of the middle connector 315. The outer wall of the inner connector 313 is sealed and snapped into the inner wall of the middle connector 315. A support block assembly 316 is fixedly installed on the outer wall of the middle connector 315. The outer wall of the support block assembly 316 abuts against the inner wall of the outer connector 314. Using the principle of topology, the outer connector 314, the middle connector 315, and the inner connector 313 are aligned to form a new connector, which is then connected to the external air supply pipe. This reduces the impact on the outer surface layer 3 of the airbag layer 309. The destruction of 10 enhances the aesthetics of the external airbag device 3. At this time, the gap between the outer connector 314 and the middle connector 315 becomes the passage for air to enter one layer of the folded airbag layer 309, and the middle part of the inner connector 313 becomes the passage for the other layer of the folded airbag layer 309. This structure solves the problem that the folded part of the airbag layer 309, which was originally connected, may be obstructed by compression after the airbag layer 309 is folded, thus affecting the airflow. Secondly, it allows both layers of the folded airbag layer 309 to be inflated and deflated simultaneously when inflated and deflated through the external air supply pipe, making the inflation and deflation of the airbag layer 309 faster and more stable. Meanwhile, after the airbag layer 309 is folded, an excellent installation position is formed in the airbag layer 309, which allows the pressure acquisition device 4 to be installed in the sandwich after the airbag layer 309 is folded, and to be subjected to pressure from all directions of the airbag layer 309. This makes the data collected by the pressure acquisition device 4 more accurate and reliable. At the same time, since the data collected by the pressure acquisition device 4 is accurate and reliable enough, the pressure sensor of the pressure acquisition device 4 does not need to be installed in the airbag layer 309, that is, there is no need to embed an interface in the airbag layer 309. This greatly reduces the processing difficulty of the airbag layer 309 and improves the service life of the airbag layer 309. Multiple elastic limiting rings 317 are installed on the airbag layer 309. The elastic limiting rings 317 match the folded airbag layer 309. When the airbag layer 309 is folded, the elastic limiting rings 317 are sleeved on the outside of the folded airbag layer 309 to limit its movement, prevent the airbag layer 309 from sliding out of place, and facilitate subsequent processing and connection with the surface layer 310.

[0024] Example 3, as Figure 1 and Figure 3 As shown: The power supply structure 407 includes a rechargeable battery 408 and a wireless charging module 409. The wireless charging module 409 is electrically connected to the rechargeable battery 408. The pressure acquisition device 4 also includes an NFC module 410 and a wireless communication module 411. The NFC module 410 and the wireless communication module 411 are electrically connected to the microcontroller 401, the analog-to-digital converter 402, the low-pass filter 403, the amplifier circuit 404, the air pressure sensor 405, the power management module 406, and the power supply structure 407.

[0025] In this embodiment, the pressure acquisition device 4 in each airbag layer 309 and the counterpulsation control host are wirelessly transmitted through a wireless transmission scheme. External devices can be used to communicate with the pressure acquisition device 4 via the NFC module 410 to perform information interaction, sleep or activation operations, etc. In addition, the pressure acquisition device 4 in the airbag layer 309 is powered by an internal rechargeable battery 408, without the need for an external interface. This means that the surface layer 310 in the external airbag device 3 does not need to be embedded with an interface for external communication or power supply, which reduces the processing difficulty of the surface layer 310 and improves the service life of the surface layer 310. In addition, the pressure acquisition device 4 of the present invention can also be wired. When in use, a conduit is provided on the airbag layer 309 and the pressure sensor is connected to the inside of the airbag through the conduit, so that the data collected by the pressure sensor is more accurate. However, this will increase the processing difficulty of the airbag layer 309 and has the risk of air leakage, reducing the service life of the external airbag device 3.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A distributed external counterpulsation pressure monitoring device, characterized in that, include: The antipulsation control host (1), external gas supply device (2), external airbag device (3) and pressure acquisition device (4) are provided. The external gas supply device (2) is communicatively connected to the antipulsation control host (1). The external airbag device (3) is connected to the external gas supply device (2) via a pipeline. The pressure acquisition device (4) is installed on the external airbag device (3) and is communicatively connected to the antipulsation control host (1). The external airbag device (3) includes: Arm airbag 1 (301), arm airbag 2 (302), hip airbag (303), thigh airbag 1 (304), thigh airbag 2 (305), calf airbag 1 (306) and calf airbag 2 (307). The pressure acquisition device (4) includes: a microcontroller (401), an analog-to-digital converter (402), a low-pass filter (403), an amplifier circuit (404), a pressure sensor (405), a power management module (406), and a power supply structure (407). The microcontroller (401), the analog-to-digital converter (402), the low-pass filter (403), the amplifier circuit (404), the pressure sensor (405), the power management module (406), and the power supply structure (407) are electrically connected to each other.

2. The distributed external counterpulsation pressure monitoring device according to claim 1, characterized in that: The external airbag device (3) includes an epidermis (308) and an airbag layer (309). The airbag layer (309) is installed inside the epidermis (308). The epidermis (308) includes a surface layer (310), an adhesive layer (311), and a backing layer (312). One side of the adhesive layer (311) is fixedly connected to one side of the surface layer (310), and one side of the backing layer (312) is fixedly connected to the other side of the surface layer (310). The backing layer (312) matches the adhesive layer (311).

3. The distributed external counterpulsation pressure monitoring device according to claim 2, characterized in that: An inner connector (313) is installed outward on one side of the airbag layer (309), and an outer connector (314) is installed outward on the other side of the airbag layer (309). A middle connector (315) is installed on the inner wall of the airbag layer (309) in the direction of the outer connector (314). The air inlet end of the middle connector (315) is inserted into the air inlet end of the outer connector (314). After the airbag layer (309) is folded, the air inlet end of the inner connector (313) is inserted into the air inlet end of the middle connector (315).

4. The distributed external counterpulsation pressure monitoring device according to claim 3, characterized in that: The outer wall of the inner connector (313) is sealed and snapped into the inner wall of the middle connector (315). The outer wall of the middle connector (315) is fixedly provided with a support block assembly (316), and the outer wall of the support block assembly (316) abuts against the inner wall of the outer connector (314).

5. A distributed external counterpulsation pressure monitoring device according to claim 2, characterized in that: Multiple elastic limiting rings (317) are installed on the airbag layer (309), and the elastic limiting rings (317) match the folded airbag layer (309).

6. A distributed external counterpulsation pressure monitoring device according to claim 2, characterized in that: The pressure acquisition device (4) is installed in the interlayer of the folded airbag layer (309), and a limiting groove (5) is fixedly sleeved on the outside of the pressure acquisition device (4), and the limiting groove (5) is installed on the airbag layer (309).

7. A distributed external counterpulsation pressure monitoring device according to claim 1, characterized in that: The power supply structure (407) includes a rechargeable battery (408) and a wireless charging module (409), wherein the wireless charging module (409) is electrically connected to the rechargeable battery (408).

8. A distributed external counterpulsation pressure monitoring device according to claim 1, characterized in that: The pressure acquisition device (4) further includes an NFC module (410) and a wireless communication module (411), which are electrically connected to a microcontroller (401), an analog-to-digital converter (402), a low-pass filter (403), an amplifier circuit (404), a pressure sensor (405), a power management module (406), and a power supply structure (407).

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