Cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection and use method

Abstract

The invention discloses a cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection and a use method. A flexible pressure sensing unit is adopted to accurately monitor the pressure and frequency of pressing in the cardiopulmonary resuscitation process, whether intermittent stopping exists or not, the intermittent stopping duration, the sternum sinking depth, the sternum springback degree and the chest ventilation condition; meanwhile, a carotid artery blood supply detection device is adopted to monitor the blood supply and backflow conditions of the patient, and a control feedback unit carries out visual and voice real-time feedback after comparison and judgment according to a set key index threshold value to guide medical staff to adjust the cardio-pulmonary resuscitation pressing operation; individualized cardio-pulmonary resuscitation core index threshold values and blood supply key index threshold values are provided for different crowds, standardization and blood supply states of cardio-pulmonary resuscitation operation of different crowds are recognized more accurately, linkage of pressing operation, monitoring, control and feedback is achieved, and individualized accurate treatment is achieved.

Description

Technical Field

[0001] This invention relates to the field of cardiopulmonary resuscitation (CPR) technology, and more particularly to a CPR device and method of use based on pressure sensing and carotid artery detection. Background Technology

[0002] Cardiopulmonary resuscitation (CPR) is an emergency rescue technique for patients experiencing cardiac and respiratory arrest. It involves a combination of manual chest compressions and artificial respiration to temporarily replace spontaneous circulation and breathing, maintaining oxygen and blood supply to vital organs such as the brain, and buying time for professional emergency care. Current CPR technologies primarily include mechanical chest compressions and manual CPR. The 3D compression electric CPR machine is a core representative product of mechanical compression, achieving automated compression operations through a mechanical transmission structure. It can, to some extent, replace manual chest compressions, reducing the physical exertion of medical personnel. However, the 3D compression electric CPR machine has high manufacturing and procurement costs, making widespread adoption difficult. Furthermore, it requires the device components to be secured to the patient's chest, which is time-consuming and physically demanding, and the installation process is complex, making it unsuitable for the rapid rescue needs of emergency situations.

[0003] Cardiopulmonary resuscitation (CPR) is primarily achieved through manual chest compressions or with the aid of auxiliary devices. For example, Chinese invention patent CN117100584A discloses a CPR feedback glove and external defibrillator, comprising a glove body, a measuring unit, an audiovisual unit, and a control unit. The measuring unit acquires compression frequency and depth data via sensors and transmits this data to the control unit. The control unit analyzes the data to obtain a judgment result, which is then transmitted to the audiovisual unit. The audiovisual unit provides specific operational prompts to the operator. The audiovisual unit includes a frequency feedback indicator light, a depth feedback indicator light, and a side-mounted voice port. It provides real-time visual and verbal feedback while performing CPR. If the operator's compression frequency and depth are correct, positive feedback is provided; otherwise, the operator is prompted by lights and / or voice to make timely adjustments and implement correct CPR. This invention has a simple structure, is easy to carry, highly safe, and convenient to use; it features dual audiovisual feedback to guide precise compressions, facilitating accurate and timely treatment; and because it is in direct contact with the hand, it is less prone to displacement during compressions.

[0004] However, the cardiopulmonary resuscitation (CPR) feedback gloves in the aforementioned application only provide feedback on compression frequency and depth during CPR, without detecting or providing feedback on other CPR operational parameters, which affects the standardization of CPR operations and treatment effectiveness; moreover, they can only passively record compression data, making it impossible to understand the patient's cerebral blood flow supply, or accurately identify the patient's physical characteristics and the continuity and voluntary status of blood flow; therefore, a CPR device and its usage method based on pressure sensitivity and carotid artery detection are proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a cardiopulmonary resuscitation (CPR) device and its usage method based on pressure sensing and carotid artery detection. This device enables real-time monitoring and feedback of CPR operations, as well as accurate identification of the patient's physical characteristics, blood flow continuity, and autonomous status. It guides medical personnel to strictly adhere to manual CPR guidelines, ensuring proper compression depth, frequency, and rebound effect. Based on the carotid artery blood flow and the patient's physiological needs after each compression, the device adjusts compression in real time to maintain the patient's basic physiological blood flow and other core indicators. This promotes personalized, precise, and standardized CPR operations while reducing equipment costs, simplifying procedures, and improving environmental adaptability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection includes a hand, a fingerless glove, a pressure sensing unit, a wearable unit, a carotid artery blood circulation detection device, and a control feedback unit; The fingerless glove is integrally molded from medical-grade flexible material and has an overall hand protection structure. The hand is worn inside the fingerless glove, which is used to fix and install the pressure-sensitive unit, the wearing unit, and the control feedback unit. The pressure-sensitive unit is located in the palm of the fingerless glove and is used to monitor the compression pressure, compression frequency, whether there is a pause and the duration of the pause, the displacement of the sternum during compression, the rebound of the sternum after compression, and the ventilation during cardiopulmonary resuscitation. The wearing unit is disposed on the outside of the little finger portion of the fingerless glove and is used for wearing and fastening the fingerless glove; The carotid artery blood flow detection device is detachably installed at the patient's carotid artery location to monitor the patient's blood flow and return. The control feedback unit is located on the back of the hand of the fingerless glove and is used to analyze and process the signals from the pressure sensing unit and the carotid artery blood flow detection device, and to provide real-time visual and voice feedback of control information.

[0007] Optionally, the carotid artery blood supply detection device includes a housing, within which are arranged sequentially a light source emitter, a photodetector, several capacitors, several resistors, a current control unit, a Bluetooth transmitting chip, and a main control chip. The light source emitter for generating light, the photodetector for detecting reflective photoelectric signals, the several capacitors, and the several resistors are electrically connected via flexible interconnecting wires. The main control chip is electrically connected to the current control unit, the Bluetooth transmitting chip, and the photodetector via flexible wires, and the main control chip is connected to and controls the light source emitter through the current control unit.

[0008] Optionally, the control feedback unit includes a miniature power supply, a control unit, a signal light unit, and a voice broadcast port. The miniature power supply provides power to the control unit, the signal light unit, and the voice broadcast port. The pressure sensor and the displacement sensor are both electrically connected to the control unit via flexible wiring. The control unit contains a Bluetooth receiver chip, which receives signals from the pressure sensor, the displacement sensor, and the Bluetooth transmitter chip, and performs signal analysis and processing. The signal light unit has a circular structure and is divided into five areas with a 72° angle between them, corresponding to the sternal depression depth, compression frequency, interval time, chest rebound height, and blood supply, respectively. The voice broadcast port is located on the edge of the control feedback unit. The signal light unit and the voice broadcast port are electrically connected to the control unit, respectively.

[0009] Optionally, the pressure-sensing unit includes a pressure sensor, a displacement sensor, and a waterproof insulating layer. Both the pressure sensor and the displacement sensor are circular thin-film structures and are arranged parallel to each other between the fingerless glove and the waterproof insulating layer. The thickness of both the pressure sensor and the displacement sensor is 2-5 mm, and the edges of the pressure sensor and the displacement sensor are rounded. The pressure sensor is used to monitor the pressure, frequency, and whether there are pauses and the duration of pauses during cardiopulmonary resuscitation (CPR). The displacement sensor works in conjunction with the pressure sensor to monitor the depth of sternal depression, the degree of sternal rebound, and chest ventilation during CPR. The waterproof insulating layer is fixedly disposed in the palm of the fingerless glove, and covers the pressure sensor and the displacement sensor in the palm of the fingerless glove.

[0010] Optionally, the wearing unit includes three Velcro straps for fastening the fingerless glove from the base of the little finger to the wrist, and a fastening strap for fastening the fingerless glove at the wrist. The three Velcro straps are evenly distributed parallel to the base of the little finger. Each Velcro strap includes a first Velcro loop side and a first Velcro hook side. The first Velcro loop side is fixedly disposed on the palm side of the fingerless glove, and the first Velcro hook side is bonded to the first Velcro loop side, with the other end of the first Velcro hook side fixedly disposed on the back side of the fingerless glove corresponding to the back of the hand. The fastening strap is disposed at the wrist of the fingerless glove. The fastening strap includes a second Velcro loop side and a second Velcro hook side. The second Velcro loop side is disposed on one side of the first Velcro loop side of the fingerless glove, and the second Velcro hook side is bonded to the second Velcro loop side, with the other end of the second Velcro hook side fixedly disposed on the back side of the wrist corresponding to the back of the hand.

[0011] This invention also discloses a method of using a cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection, comprising the following steps: S1. Wearing: Medical staff first install the carotid artery blood flow detection device on the patient's carotid artery, then wear fingerless gloves and fix the fingerless gloves to the medical staff's hands through the wearing unit; S2, Cardiopulmonary resuscitation (CPR) compressions: Medical personnel place their hands firmly against the patient's chest and activate the CPR device; the medical personnel then perform compressions on the patient according to the hands-only CPR guidelines. S3. Real-time monitoring: Real-time monitoring is performed while medical staff are performing chest compressions. Pressure sensors monitor the pressure, frequency, and pauses during cardiopulmonary resuscitation (CPR), as well as the duration of these pauses. Displacement sensors monitor the depth of sternal indentation, the degree of sternal rebound, and chest ventilation. A carotid artery blood flow detection device monitors the patient's blood flow and return. S4. Personalized settings for the control feedback unit: Personalize the thresholds for core cardiopulmonary resuscitation indicators (blood supply, compressions) and select the appropriate level based on the patient's personal information (gender, age, BMI, location of cardiac arrest, cause of cardiac arrest, ROSC time). S5. Control and Feedback: The control unit of the control feedback unit receives signals from the pressure sensor, displacement sensor and carotid artery blood circulation detection device, performs signal analysis and processing, and provides real-time visual and voice feedback of control information through the signal light unit and voice broadcast port respectively. S6. Adjusting CPR compressions until targets are met: Based on the real-time visual feedback from the signal light unit and the real-time voice feedback from the voice broadcast, guide medical staff to adjust CPR compression operations, accurately identify the patient's blood circulation status, and strictly follow the manual CPR guidelines until the core compression and blood circulation indicators are met.

[0012] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: 1. The pressure sensor and displacement sensor in the flexible pressure-sensitive unit work together to accurately monitor the pressure, frequency, pauses and duration, sternal indentation depth, sternal rebound, and chest ventilation during cardiopulmonary resuscitation (CPR). At the same time, a carotid artery blood flow detection device monitors the patient's blood flow and return. The control feedback unit compares and judges the key indicator thresholds and provides real-time visual and voice feedback to guide medical staff to adjust CPR compression operations, accurately identify the patient's blood flow status, and strictly follow the manual CPR guidelines until the core compression and blood flow indicators are met. 2. Personalized threshold values ​​for core cardiopulmonary resuscitation (CPR) indicators and key blood circulation indicators are proposed for different population groups. These values ​​are applicable to different population groups and can more accurately identify the standardization of CPR operations and blood circulation status in different population groups, so as to achieve personalized and precise treatment. This invention solves the problems affecting the standardization of cardiopulmonary resuscitation (CPR) operations and the inability to understand the patient's cerebral blood flow supply. It monitors multiple core indicators in real time and provides real-time visual and voice feedback, realizing the linkage of compression operation, monitoring, control, and feedback. This promotes the personalized, precise, and standardized implementation of CPR operations. It can also be quickly put on and taken off, is low-cost, and has versatility and applicability. Attached Figure Description

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0015] Figure 1 This is a front view structural diagram of the palm side of the fingerless glove of the present invention; Figure 2 This is a front view structural diagram of the back of the fingerless glove of the present invention; Figure 3 This is a schematic diagram of the structure of the fingerless glove and pressure-sensitive unit of the present invention; Figure 4 This is a schematic diagram of the carotid artery blood supply detection device of the present invention; The figure shows: 1. Hand; 2. Fingerless glove; 3. Pressure sensing unit; 31. Pressure sensor; 32. Displacement sensor; 33. Waterproof insulation layer; 4. Wearing unit; 41. Velcro; 411. First Velcro loop side; 412. First Velcro hook side; 42. Fixing strap; 421. Second Velcro loop side; 422. Second Velcro hook side; 5. Carotid artery blood circulation detection device; 51. Housing; 52. Light source transmitter; 53. Photodetector; 54. Capacitor; 55. Resistor; 56. Current control unit; 57. Bluetooth transmitter chip; 58. Main control chip; 6. Control feedback unit; 61. Miniature power supply; 62. Control unit; 63. Signal light unit; 64. Voice broadcast port. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention; rather, it merely illustrates selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0019] It should be noted that similar labels and letters can easily represent similar items in the following figures; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings; or the orientation or positional relationship commonly used when the product of this invention is in use; or the orientation or positional relationship commonly understood by those skilled in the art. These terms are used only for the convenience of describing this invention and for simplifying the description; they do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] like Figure 1-4 As shown, the present invention proposes a cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection, including a hand 1, a fingerless glove 2, a pressure sensing unit 3, a wearable unit 4, a carotid artery blood circulation detection device 5, and a control feedback unit 6.

[0023] Example 1 In this embodiment, the fingerless glove 2 is integrally molded from medical-grade silicone rubber material. This material has good flexibility, biocompatibility and aging resistance. The fingerless design can ensure the freedom of movement of medical staff's fingers. The overall structure is a hand protection device. The size is suitable for the average adult hand size. The hand 1 can be easily worn inside the fingerless glove 2 with good fit and no obvious looseness or tightness.

[0024] The pressure-sensing unit 3 is located in the palm of the fingerless glove 2 and is used to monitor the compression pressure, compression frequency, whether there is a pause and the duration of the pause, the displacement of the sternum during compression, the rebound of the sternum after compression, and the ventilation status during cardiopulmonary resuscitation. The pressure-sensing unit 3 includes a pressure sensor 31, a displacement sensor 32, and a waterproof insulating layer 33. The pressure sensor 31 and the displacement sensor 32 are both circular thin sheet structures with a thickness of 2-5 mm and are arranged in parallel between the fingerless glove 2 and the waterproof insulating layer 33. The waterproof insulating layer 33 is fixedly located in the palm of the fingerless glove 2 and covers the pressure sensor 31 and the displacement sensor 32 in the palm of the fingerless glove 2. Among them, the pressure sensor 31 is a flexible pressure sensor of model FSR402 with a thickness of 3 mm. It has high sensitivity and can accurately sense pressure changes from 0 to 400 N, which can meet the monitoring needs of pressure, frequency, whether there is a pause and the duration of the pause during lung resuscitation. The displacement sensor 32 is a miniature flexible displacement sensor with a thickness of 3 mm and a measurement range of 0~100 mm. The displacement sensor 32, together with the pressure sensor 31, is used to monitor the depth of sternal depression, the degree of sternal rebound, and chest ventilation during cardiopulmonary resuscitation. The waterproof insulating layer 33 is made of polyimide film material with a thickness of 0.5 mm. It is tightly wrapped around the outside of the pressure sensor 31 and the displacement sensor 32 with medical-grade adhesive to ensure that the pressure sensor 31 and the displacement sensor 32 are located between the fingerless glove 2 and the waterproof insulating layer 33 and are completely covered; to ensure waterproof and insulating effect, while not affecting the sensitivity of the sensor. It should be noted that the edges of both the pressure sensor 31 and the displacement sensor 32 are rounded by grinding, with a radius of 2 mm, to avoid scratching the fingerless glove 2 or the waterproof insulation layer 33.

[0025] Wearing unit 4 for wearing and fastening fingerless glove 2 is provided on the outside of the little finger of fingerless glove 2; wearing unit 4 includes three Velcro straps 41 for fastening the little finger of fingerless glove 2 to the wrist and a fastening strap 42 for fastening the wrist of fingerless glove 2. The fingerless glove 2 can be fastened to hand 1 by the three Velcro straps 41 and the fastening strap 42. The three Velcro straps 41, evenly distributed parallel to the base of the little finger of the hand 1, include a first Velcro loop surface 411 and a first Velcro hook surface 412. The first Velcro loop surface 411 is fixedly set on the palm side of the fingerless glove 2, and can be adhered to the palm side of the fingerless glove 2 using medical-grade adhesive. The first Velcro hook surface 412 is bonded to the first Velcro loop surface 411, and the other end of the first Velcro hook surface 412 is fixedly set at the position of the first Velcro loop surface 411 corresponding to the back side of the fingerless glove 2. Thus, the first Velcro hook surface 412 can be extended from the back side of the hand around the base of the little finger and then adhered to the first Velcro loop surface 411 on the palm side, thereby fixing the extended side of the base of the little finger of the fingerless glove 2 to the hand 1. The adhesive strength is moderate, which ensures both the fixing effect and easy disassembly. It should be noted that the three first hook and loop fastener surfaces 411, especially the middle first hook and loop fastener surface 411, must not extend beyond the waterproof insulation layer 33, so as not to affect the pressure sensor 31 and the displacement sensor 32. The fixing strap 42 is located at the wrist of the fingerless glove 2 and secures it to the wrist. The fixing strap 42 includes a second hook and loop fastener 421 and a second hook and loop fastener 422 that are bonded together. The second hook and loop fastener 421 is located on one side of the first hook and loop fastener 411 on the fingerless glove 2. The second hook and loop fastener 422 are bonded to the second hook and loop fastener 421 and the other end of the second hook and loop fastener 422 is fixedly located at the position of the second hook and loop fastener 421 corresponding to the back of the wrist of the fingerless glove 2. The second hook and loop fastener 422 can be wrapped around the back of the wrist and then attached to the first hook and loop fastener 411 on the wrist side, thereby fixing the wrist of the fingerless glove 2 to the wrist of the hand 1.

[0026] The carotid artery blood flow detection device 5, used for real-time monitoring of a patient's blood supply and return, is detachably installed at the patient's carotid artery. The carotid artery blood flow detection device 5 includes a housing 51, which can be fixed to the patient's carotid artery using medical adhesive. The housing 51 includes a light source emitter 52, a photodetector 53, several capacitors 54, several resistors 55, a current control unit 56, a Bluetooth transmitter chip 57, and a main control chip 58 arranged in sequence. The light source emitter 52, which generates photoelectric signals, the photodetector 53, which detects reflected photoelectric signals, the several capacitors 54, and the several resistors 55 are electrically connected through flexible interconnecting wires. The main control chip 58 is electrically connected to the current control unit 56, the Bluetooth transmitter chip 57, and the photodetector 53 through flexible wires. The main control chip 58 is connected to and controls the light source emitter 52 through the current control unit 56. The main control chip 58 adjusts the current of the light source transmitter 52 through the current control unit 56. The light source transmitter 52 generates and emits photoelectric signals to the carotid artery. The photodetector 53 detects and collects the reflected photoelectric signals and transmits them to the main control chip 58 for signal processing and analysis. The analysis results are transmitted via Bluetooth through the Bluetooth transmitter chip 57.

[0027] The control feedback unit 6, located on the back of the hand of the fingerless glove 2, is used to analyze and process the signals from the pressure sensing unit 3 and the carotid artery blood circulation detection device 5, and to provide real-time visual and voice feedback of control information. The control feedback unit 6 includes a miniature power supply 61, a control unit 62, a signal light unit 63, and a voice broadcast port 64. The miniature power supply 61 provides power to the control unit 62, the signal light unit 63, and the voice broadcast port 64. The pressure sensor 31 and the displacement sensor 32 are both electrically connected to the control unit 62 via flexible circuitry. The flexible circuitry can be flexible copper foil circuitry, passing around the thumb and index finger of the fingerless glove 2 to the back of the hand. The control unit 62 contains a Bluetooth receiver chip so that the control unit 62 can receive Bluetooth transmissions via Bluetooth. The signal emitted by chip 57; the control unit 62 is used to receive signals from pressure sensor 31, displacement sensor 32 and Bluetooth transmitter chip 57 and perform signal analysis and processing; the signal light unit 63 has a circular structure and is divided into five areas with an included angle of 72°, corresponding to sternal depression depth, compression frequency, interval time, chest rebound height and blood circulation, so as to provide real-time visual feedback on sternal depression depth, compression frequency, interval time, chest rebound height and blood circulation respectively; the voice broadcast port 64 is set on the edge of the control feedback unit 6 and provides real-time voice feedback according to the instructions of the control unit 62; the signal light unit 63 and the voice broadcast port 64 are electrically connected to the control unit 62 and controlled by the control unit 62.

[0028] It should be noted that the five areas of the signal light unit 63 can be labeled and distinguished by the letters D, H, T, G, and B respectively, according to the sternal depression depth D, compression frequency H, interval time T, chest rebound height G, and blood supply B.

[0029] Example 2 Based on Example 1, this invention discloses a method for using a cardiopulmonary resuscitation device based on pressure sensitivity and carotid artery detection, comprising the following steps: S1. Wearing: The medical staff first installs the carotid artery blood flow detection device 5 on the patient's carotid artery, then wears the fingerless glove 2 and fixes the fingerless glove 2 to the medical staff's hand 1 through the wearing unit 4; S2, Cardiopulmonary resuscitation (CPR) compressions: The medical staff places their hands 1 firmly against the patient's chest and activates the CPR device; the medical staff then performs compressions on the patient according to the hands-only CPR guidelines. S3. Real-time monitoring: Real-time monitoring is performed while medical staff are performing chest compressions. Pressure sensor 31 monitors the pressure, frequency, and whether there are pauses and the duration of pauses during cardiopulmonary resuscitation. Displacement sensor 32 monitors the depth of sternal indentation, the degree of sternal rebound, and chest ventilation. Carotid artery blood flow detection device 5 monitors the patient's blood flow and return. S4, Personalized settings for control feedback unit 6: Personalized setting of thresholds for core cardiopulmonary resuscitation indicators (blood supply, compressions), and selection of appropriate levels based on the patient's personal information (gender, age, BMI, location of cardiac arrest, cause of cardiac arrest, ROSC time): (1). Key indicators of blood supply Key blood supply indicators were assigned different thresholds for MBI and neonatal category II: When BMI < 18.5, the thresholds for peak systolic velocity (PSV) were set at 55–90 cm / s and end-diastolic velocity (EDV) at 18–35 cm / s; when BMI ≤ 18.5 ≤ BMI ≤ 23.9, the thresholds for PSV were set at 60–100 cm / s and EDV at 20–40 cm / s; when BMI ≤ 24.0 ≤ BMI ≤ 27.9, the thresholds for PSV were set at 65–110 cm / s and EDV at 22–45 cm / s; when BMI ≥ 28.0, the thresholds for PSV were set at 70–120 cm / s and EDV at 25–50 cm / s. cm / s; when the patient is centrally obese, the threshold for peak systolic velocity (PSV) is set at 75~125 cm / s, and the threshold for end-diastolic velocity (EDV) is set at 28~55 cm / s; when the patient is a newborn (0~1 month), the threshold for peak systolic velocity (PSV) is set at 50~80 cm / s, and the threshold for end-diastolic velocity (EDV) is set at 15~30 cm / s; the threshold values ​​for key blood supply indicators for different populations are shown in Table 1.

[0030] Table 1 Thresholds of Key Blood Circulation Indicators in Different Populations

[0031] (2). Key indicators of cardiopulmonary resuscitation compressions Key indicators of cardiopulmonary resuscitation (CPR) compressions were set with different thresholds for adults, adolescents, and children: for adults, the thresholds for sternal depression depth, compression frequency, interval time, and chest rebound height were 5-6 cm, 100-120 compressions / min, <10 s, and full rebound, respectively; for adolescents and children, the thresholds for sternal depression depth, compression frequency, interval time, and chest rebound height were 4-5 cm, 100-120 compressions / min, <10 s, and full rebound, respectively. The thresholds for key CPR compressions for different populations are shown in Table 2.

[0032] Table 2 Thresholds of Key Cardiopulmonary Resuscitation Compression Indicators for Different Populations

[0033] S5. Control and Feedback: The control unit 62 of the control feedback unit 6 receives signals from the pressure sensor 31, displacement sensor 32, and carotid artery blood supply detection device 5, performs signal analysis and processing, and provides real-time visual and voice feedback of control information through the signal light unit 63 and the voice broadcast port 64, respectively. (1). Control and feedback of blood supply and return status The control unit 62 compares and judges the real-time monitored peak systolic velocity (PSV) and end-diastolic velocity (EDV) with the corresponding key blood flow indicator thresholds, and provides real-time visual and voice feedback: if the measured value is within the threshold range, it is considered qualified, the blood flow indicator light is green, and the voice prompt is "blood flow qualified"; if the measured value is greater than the maximum threshold value, it is considered too fast, the blood flow indicator light is yellow, and the voice prompt is "blood flow too fast"; if the measured value is less than the minimum threshold value, it is considered too slow, the blood flow indicator light is red, and the voice prompt is "blood flow too slow"; the relationship between key blood flow indicators and indicator lights for different populations is shown in Table 3.

[0034] It should be noted that the priority order of blood flow indicator lights is: red > yellow > green; the priority order of voice prompts is: "blood flow too slow" > "blood flow too fast" > "blood flow is adequate". Table 3. Comparison of Key Blood Circulation Indicators and Signal Lights in Different Populations

[0035] (2). Control and feedback of cardiopulmonary resuscitation (CPR) compressions The control unit 62 compares and determines the real-time monitored key CPR compression values ​​with the corresponding compression thresholds, and provides real-time visual and verbal feedback. a. If the measured sternal depression depth is within the threshold range, it is considered acceptable; the sternal depression depth indicator light will turn green, and the voice prompt will say "Compression pressure is acceptable." If the measured sternal depression depth is less than the minimum value of the threshold, it is considered insufficient; the sternal depression depth indicator light will turn yellow, and the voice prompt will say "Compression pressure is insufficient, please increase the pressure." If the measured sternal depression depth is greater than the maximum value of the threshold, it is considered excessive; the sternal depression depth indicator light will turn red, and the voice prompt will say "Compression pressure is excessive, please decrease the pressure." b. If the press frequency measurement is within the threshold range, it is considered qualified, the press frequency indicator light will turn green, and the voice prompt will say "Press frequency qualified"; if the press frequency measurement is less than the minimum value of the threshold, it is considered that the press frequency is too slow, the press frequency indicator light will turn yellow, and the voice prompt will say "Press frequency too slow, please increase the press frequency"; if the press frequency measurement is greater than the maximum value of the threshold, it is considered that the press frequency is too fast, the press frequency indicator light will turn red, and the voice prompt will say "Press frequency too fast, please decrease the press frequency"; c. If the measured value of the interruption time is within the threshold range, it is considered qualified, the interruption time indicator light will be green, and the voice prompt will be "Interruption time qualified"; if the measured value of the interruption time is greater than the maximum value of the threshold, it is considered that the interruption time is too long; the interruption time indicator light will be red, and the voice prompt will be "Interruption time is too long, please reduce the interruption time"; d. If the measured chest rebound height reaches the sufficient rebound threshold, it is deemed qualified, the chest rebound height indicator light will be green, and the voice prompt will be "Chest rebound height qualified"; if the measured chest rebound height is less than the sufficient rebound threshold, it is deemed insufficient chest rebound; the chest rebound height indicator light will be yellow, and the voice prompt will be "Chest rebound height insufficient". The relationship between CPR compressions and traffic lights for different populations is shown in Table 4.

[0036] It should be noted that the voice prompts are prioritized based on the indicator light colors corresponding to key indicators of blood circulation and CPR compressions: red > yellow > green.

[0037] Table 4. Comparison of CPR compressions and traffic light signals among different population groups

[0038] S6. Adjusting CPR compressions until targets are met: Based on the real-time visual feedback from signal light unit 63 and the real-time voice feedback from voice broadcast port 64, guide medical staff to adjust CPR compression operations, accurately identify the patient's blood circulation status, and strictly follow the manual CPR guidelines until the core compression and blood circulation indicators are met.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection, characterized in that, It includes a hand (1), a fingerless glove (2), a pressure-sensitive unit (3), a wearable unit (4), a carotid artery blood flow detection device (5), and a control feedback unit (6); The fingerless glove (2) is integrally molded from medical-grade flexible material and has an overall hand protection structure. The hand (1) is worn inside the fingerless glove (2). The fingerless glove (2) is used to fix and install the pressure-sensitive unit (3), the wearing unit (4), and the control feedback unit (6). The pressure-sensitive unit (3) is located in the palm of the fingerless glove (2) and is used to monitor the compression pressure, compression frequency, whether there is a pause and the duration of the pause, the displacement of the sternum during compression, the rebound of the sternum after compression, and the ventilation during cardiopulmonary resuscitation. The wearing unit (4) is disposed on the outside of the little finger of the fingerless glove (2) and is used to wear and fasten the fingerless glove (2); The carotid artery blood flow detection device (5) is detachably installed at the patient's carotid artery location to monitor the patient's blood flow and return. The control feedback unit (6) is located on the back of the hand of the fingerless glove (2) and is used to analyze and process the signals of the pressure sensing unit (3) and the carotid artery blood flow detection device (5) and to provide real-time visual and voice feedback of control information.

2. The cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection according to claim 1, characterized in that: The carotid artery blood supply detection device (5) includes a housing (51), which contains a light source emitter (52), a photodetector (53), several capacitors (54), several resistors (55), a current control unit (56), a Bluetooth transmitter chip (57), and a main control chip (58) arranged in sequence. The light source emitter (52) for generating light, the photodetector (53) for detecting reflective photoelectric signals, the several capacitors (54), and the several resistors (55) are electrically connected through flexible interconnecting wires. The main control chip (58) is electrically connected to the current control unit (56), the Bluetooth transmitter chip (57), and the photodetector (53) through flexible wires. The main control chip (58) is connected to and controls the light source emitter (52) through the current control unit (56).

3. The cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection according to claim 2, characterized in that: The control feedback unit (6) includes a miniature power supply (61), a control unit (62), a signal light unit (63), and a voice broadcast port (64). The miniature power supply (61) provides power to the control unit (62), the signal light unit (63), and the voice broadcast port (64). The pressure sensor (31) and the displacement sensor (32) are both electrically connected to the control unit (62) via flexible wiring. The control unit (62) contains a Bluetooth receiver chip and is used to receive the pressure... The force sensor (31), displacement sensor (32) and Bluetooth transmitter chip (57) signals are analyzed and processed. The signal light unit (63) has a circular structure and is divided into five areas with a 72° angle between them, corresponding to the sternal depression depth, compression frequency, intermittent time, chest rebound height and blood supply, respectively. The voice broadcast port (64) is located on the edge of the control feedback unit (6). The signal light unit (63) and the voice broadcast port (64) are electrically connected to the control unit (62), respectively.

4. A cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection according to claim 1, characterized in that: The pressure-sensitive unit (3) includes a pressure sensor (31), a displacement sensor (32), and a waterproof insulating layer (33). The pressure sensor (31) and the displacement sensor (32) are both circular thin-film structures and are arranged in parallel between the fingerless glove (2) and the waterproof insulating layer (33). The thickness of the pressure sensor (31) and the displacement sensor (32) is 2~5 mm, and the edges of the pressure sensor (31) and the displacement sensor (32) are rounded. The pressure sensor (31) is used to monitor the pressure, frequency, and whether there is a pause and the duration of the pause during cardiopulmonary resuscitation. The displacement sensor (32) works with the pressure sensor (31) to monitor the depth of sternal depression, the degree of sternal rebound, and chest ventilation during cardiopulmonary resuscitation. The waterproof insulating layer (33) is fixedly installed in the palm of the fingerless glove (2) and covers the pressure sensor (31) and the displacement sensor (32) in the palm of the fingerless glove (2).

5. The cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection according to claim 1, characterized in that: The wearing unit (4) includes three Velcro straps (41) for fastening the base of the little finger of the fingerless glove (2) to the wrist, and a fastening strap (42) for fastening the wrist of the fingerless glove (2). The three Velcro straps (41) are evenly distributed parallel to the base of the little finger. Each Velcro strap (41) includes a first Velcro loop (411) and a first Velcro hook (412). The first Velcro loop (411) is fixedly disposed on the palm side of the fingerless glove (2), and the first Velcro hook (412) is adhered to the first Velcro loop (411), with the other end of the first Velcro hook (412) fixedly disposed on the first Velcro loop (411). The hook and loop side (411) corresponds to the position on the back of the hand of the fingerless glove (2); the fixing strap (42) is provided at the wrist of the fingerless glove (2), and the fixing strap (42) includes a second hook and loop side (421) and a second hook and loop side (422). The second hook and loop side (421) is provided on one side of the first hook and loop side (411) on the fingerless glove (2), and the second hook and loop side (422) is bonded to the second hook and loop side (421), and the other end of the second hook and loop side (422) is fixedly provided at the position of the second hook and loop side (421) corresponding to the back of the wrist of the fingerless glove (2).

6. The method of using the cardiopulmonary resuscitation device based on pressure sensing and carotid artery detection technology according to any one of claims 1-5, characterized in that: Includes the following steps: S1. Wearing: The medical staff first installs the carotid artery blood flow detection device (5) on the patient's carotid artery, then wears fingerless gloves (2) and fixes the fingerless gloves (2) to the medical staff's hands (1) through the wearing unit (4); S2, Cardiopulmonary resuscitation (CPR) compressions: Medical staff place their hands (1) on and press firmly against the patient's chest, and turn on the CPR device; medical staff perform compressions on the patient in accordance with the manual CPR guidelines. S3. Real-time monitoring: Real-time monitoring is performed while medical staff are performing chest compressions. The pressure sensor (31) monitors the pressure, frequency, and whether there are pauses and the duration of pauses during cardiopulmonary resuscitation. The displacement sensor (32) monitors the depth of sternal depression, the degree of sternal rebound, and chest ventilation. The carotid artery blood flow detection device (5) monitors the patient's blood flow and return. S4. Personalized settings of the control feedback unit (6): Personalized settings of the thresholds of the core indicators of cardiopulmonary resuscitation (blood supply, compression), and selection of the corresponding level based on the patient's personal information (gender, age, BMI, location of cardiac arrest, cause of cardiac arrest, ROSC time); S5. Control and Feedback: The control unit (62) of the control feedback unit (6) receives signals from the pressure sensor (31), displacement sensor (32) and carotid artery blood flow detection device (5), performs signal analysis and processing, and provides real-time visual and voice feedback of control information through the signal light unit (63) and voice broadcast port (64), respectively. S6. Adjusting cardiopulmonary resuscitation compressions until the target is met: Based on the real-time visual feedback from the signal light unit (63) and the real-time voice feedback from the voice broadcast port (64), guide medical staff to adjust the cardiopulmonary resuscitation compression operation, accurately identify the patient's blood circulation status, and strictly follow the manual cardiopulmonary resuscitation guidelines to carry out the operation until the core compression indicators and the core blood circulation indicators are met.

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