Femoral artery paracentesis post-operation pressure control hemostasis device and monitoring intelligent control system thereof

Abstract

The invention discloses a femoral artery paracentesis post-operation pressure-controlled hemostasis device and a monitoring intelligent control system thereof, and relates to the technical field of medical apparatuses and instruments, and the femoral artery paracentesis post-operation pressure-controlled hemostasis device comprises an assembly panel; the air bags are arranged at the bottom of the assembly panel; the air pump is arranged at the top of the assembly panel and used for controlling the air bags to contract; the control piece is arranged at the top of the assembly panel and used for controlling the air pump; the Doppler probe is arranged at the bottom of the assembly panel and used for detecting the blood flow speed of the far end of a puncture point, the hemostasis safety and efficiency are remarkably improved through multi-mode intelligent control and a real-time feedback mechanism, the vein area is accurately recognized and avoided in combination with ultrasonic and infrared spectrum analysis of the artery positioning module, the thrombus forming probability is effectively reduced, and the blood flow speed of the far end of the puncture point is detected. The pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostatic effect, and improves the comfort of the patient while ensuring the hemostatic effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a pressure control hemostasis device after femoral artery puncture and its monitoring intelligent control system. Background Art

[0002] The existing hemostasis solutions after femoral artery puncture in cerebral angiography and interventional surgery mainly use compressors or vascular staplers for initial hemostasis, but there are defects: local gauze compression and elastic bandage abdominal winding fixation need to be superimposed, the operation is cumbersome and the pressure uniformity is insufficient, and there is a risk of local hematoma; the traditional pressurization method is prone to cause bruising or skin breakdown at the pressurized site, especially in elderly patients; strict immobilization for 24 hours after surgery significantly increases the risk of lower extremity venous thrombosis, while reducing patient compliance and increasing the nursing burden.

[0003] Based on this, the present invention provides a pressure control hemostasis device after femoral artery puncture and its monitoring intelligent control system. Summary of the Invention

[0004] In order to solve the problems raised in the above background art, the present invention provides a pressure control hemostasis device after femoral artery puncture and its monitoring intelligent control system.

[0005] The pressure control hemostasis device after femoral artery puncture provided by the present invention adopts the following technical solutions:

[0006] A pressure control hemostasis device after femoral artery puncture includes an assembly panel; a plurality of airbags disposed at the bottom of the assembly panel; an air pump disposed at the top of the assembly panel for controlling the contraction of each airbag; a control member disposed at the top of the assembly panel for manipulating the air pump; and a Doppler probe disposed at the bottom of the assembly panel for detecting the blood flow velocity at the distal end of the puncture site.

[0007] Preferably, it further includes a sensor disposed at the bottom of the airbag, and the sensor is electrically connected to the control member.

[0008] Preferably, one end of the assembly panel is provided with a first restraint strap, and the other end of the assembly panel is provided with a second restraint strap.

[0009] The monitoring intelligent control system of the pressure control hemostasis device after femoral artery puncture provided by the present invention adopts the following technical solutions:

[0010] A monitoring intelligent control system of a pressure control hemostasis device after femoral artery puncture, for a pressure control hemostasis device after femoral artery puncture, the control system includes:

[0011] An artery positioning module, integrating an ultrasonic sensor array and an infrared spectroscopy unit, and based on an image edge detection algorithm, it can identify the femoral artery puncture point and the surrounding vein distribution in real time. The edge detection formula is:

[0012]

[0013] Among them, G is the Gaussian wave kernel, and I x 、I y are the image gradients;

[0014] The pressure regulation module dynamically adjusts the airbag pressure through the PID algorithm. The target pressure is 20 - 30 mmHg, and the pressure error correction formula is:

[0015]

[0016] Among them, e(t) = P 目标 -P 实际 、Kp、K i 、K d are preset parameters;

[0017] The blood flow monitoring unit uses a Doppler probe to detect the blood flow velocity V at the distal end of the puncture point in real time. When V < 15 cm / s, an alarm is triggered.

[0018] Preferably, the artery positioning module combines infrared spectroscopy to analyze venous oxygen saturation. The venous recognition formula is:

[0019]

[0020] Among them, k is the calibration coefficient. When S v O2 > 75%, it is marked as the venous area and compression is avoided.

[0021] Preferably, the pressure regulation module adopts a closed-loop feedback mechanism. When the rate of pressure change ΔP / Δt > 5 mmHg / s caused by body position changes, it triggers the recalibration of the airbag pressure and synchronizes the pressure data to the medical staff terminal through Bluetooth / Wi-Fi.

[0022] Preferably, it also includes a built-in pressure-time optimization model, which dynamically shortens the compression time according to the real-time hemostasis effect. The target hemostasis time is calculated as:

[0023]

[0024] Among them, t 初始 = 3 hours, α is the attenuation coefficient, and p 平均 is the average compression pressure.

[0025] Preferably, the control system is linked with the bedside monitor through a wireless communication module, and a real-time hemostasis report including the pressure stability index S p and the blood flow recovery rate R b is generated. The calculation formula is:

[0026]

[0027] Preferably, it further includes an inertial measurement unit. When the inclination angle θ of the patient's body position is greater than 30°, the airbag pressure is automatically reduced to the safety threshold P 安全 = 15 mmHg.

[0028] Preferably, it further includes an emergency pressure relief mode. The adjustable range of the pressure relief rate is 0.5 - 2.0 L / min, and the response time t of the pressure relief valve 响应 < 0.5 s.

[0029] In summary, the present invention includes the following beneficial technical effects:

[0030] 1. Through the multi-modal intelligent control and real-time feedback mechanism, the hemostasis safety and efficiency are significantly improved. First, the device adopts a closed-loop PID pressure control algorithm and multi-sensor fusion technology to dynamically maintain the target pressure range (20 - 30 mmHg). Combining with the sensor at the bottom of the airbag to monitor the pressure change in real time, the microprocessor precisely corrects the error to avoid the complication risks caused by insufficient or excessive compression in traditional hemostasis. Secondly, the Doppler probe integrates a temperature compensation module to compensate for the interference of the ambient temperature on blood flow monitoring through a formula. When the distal blood flow velocity is lower than 15 cm / s, an alarm is triggered. Combining the ultrasound and infrared spectrum analysis of the artery positioning module, it accurately identifies and avoids the venous area, effectively reducing the probability of thrombosis formation. In addition, the pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostasis effect, improving the patient's comfort while ensuring the hemostasis effect.

[0031] 2. The inertial measurement unit is used to detect the inclination angle of the patient's body position in real time. When it exceeds 30°, the airbag pressure is automatically reduced to the safety threshold (15 mmHg) to prevent local ischemia caused by body position changes. The response time of the emergency pressure relief mode is less than 0.5 s, and the pressure relief rate is adjustable (0.5 - 2.0 L / min) to ensure rapid decompression in case of emergencies.

[0032] 3. The reinforcement learning algorithm and fuzzy PID controller are introduced, and a personalized control model is constructed by combining the patient's physiological parameters (such as blood pressure, heart rate, vascular elastic modulus). Through online parameter optimization, precise regulation of "one policy for one person" is achieved. The wireless communication module is linked with the medical staff terminal to generate a visual report including the pressure stability index and blood flow recovery rate in real time, supporting remote monitoring and decision-making, comprehensively improving the intelligent level and clinical operability of postoperative hemostasis.

[0033] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. Brief Description of the Drawings

[0034] Figure 1 is a schematic structural view of a pressure - controlled hemostasis device after femoral artery puncture in an embodiment of the present invention;

[0035] Figure 2 is a schematic structural view of the other side of a pressure - controlled hemostasis device after femoral artery puncture in an embodiment of the present invention;

[0036] Figure 3 is a schematic structural view of the side of a pressure - controlled hemostasis device after femoral artery puncture in an embodiment of the present invention.

[0037] Description of the reference numerals: 1. Assembly panel; 2. Airbag; 3. Air pump; 4. Doppler probe; 5. Sensor; 6. Control component. Detailed Description of the Embodiment

[0038] The following further describes the present invention in detail with reference to the attached Figures 1 to 3 drawings.

[0039] It should be noted that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in their magnitudes, and any dimensions are only exemplary and not limiting. In addition, the same reference numerals are used for the same structures, elements, or fittings that appear in more than two figures to represent similar features.

[0040] Embodiment 1

[0041] An embodiment of the present invention discloses a pressure - controlled hemostasis device after femoral artery puncture. Referring to Figures 1 to 3 , a pressure - controlled hemostasis device after femoral artery puncture includes an assembly panel 1, a plurality of airbags 2, an air pump 3, a control component 6, and a Doppler probe 4; the plurality of airbags 2 are arranged at the bottom of the assembly panel 1; the air pump 3 is arranged at the top of the assembly panel 1 and is used to control the contraction of each airbag 2; the control component 6 is arranged at the top of the assembly panel 1 and is used to control the air pump 3; the Doppler probe 4 is arranged at the bottom of the assembly panel 1 and is used to detect the blood flow velocity at the distal end of the puncture site.

[0042] Specifically, the control component 6 includes a built - in microprocessor, a wireless communication module, and a storage battery, and is connected to the airbag 2 through a flexible circuit, and can receive the pressure feedback signal in real time and control the airbag 2 to be fully inflated.

[0043] Specifically, the Doppler probe 4 is built - in with a temperature compensation module, and the compensation formula is:

[0044]

[0045] where T 标准 = 37 °C, T 实际is the real-time skin temperature.

[0046] The Doppler probe 4 combines temperature compensation technology to monitor the blood flow velocity in real time (alarm when V < 15 cm / s), significantly reducing the probability of thrombosis.

[0047] As Figure 3 shown, it also includes a sensor 5 arranged at the bottom of the airbag 2, and the sensor 5 is electrically connected to the control member 6.

[0048] As Figure 1 and Figure 2 shown, one end of the assembly panel 1 is provided with a first restraint strap, and the other end of the assembly panel 1 is provided with a second restraint strap.

[0049] Specifically, a skin-friendly material is provided at the contact part of the airbag 2 with the skin. The skin-friendly material is silicone anti-slip cloth, high-temperature resistant filter composite material, silk-screened silicone coating fabric, breathable elastic membrane material or Dimora silicone foam dressing. Both the first restraint strap and the second restraint strap are made of skin-friendly and breathable materials. This setting can reduce skin compressive injuries and the accumulation of sweat.

[0050] Embodiment 2

[0051] A monitoring intelligent control system for a pressure-controlled hemostasis device after femoral artery puncture, which is used for a pressure-controlled hemostasis device after femoral artery puncture. The control system includes:

[0052] An artery positioning module, integrating an ultrasonic sensor array and an infrared spectroscopy unit, and based on an image edge detection algorithm, it can identify the femoral artery puncture point and the surrounding vein distribution in real time. The edge detection formula is:

[0053]

[0054] where G is the Gaussian wave kernel, and I x , I y are the image gradients;

[0055] A pressure regulation module, which dynamically adjusts the pressure of the airbag 2 through the PID algorithm. The target pressure is 20 - 30 mmHg, and the pressure error correction formula is:

[0056]

[0057] where e(t) = P 目标 - P 实际 , Kp, K i , K d are preset parameters;

[0058] A blood flow monitoring unit, which can detect the blood flow velocity V at the distal end of the puncture point in real time through the Doppler probe 4, and trigger an alarm when V < 15 cm / s.

[0059] Specifically, the artery positioning module combines infrared spectroscopy to analyze venous oxygen saturation. The venous recognition formula is as follows:

[0060]

[0061] where k is the calibration coefficient. When S v O2 > 75%, it is marked as the venous area and compression is avoided.

[0062] Specifically, the pressure regulation module adopts a closed-loop feedback mechanism. When the pressure change rate ΔP / Δt > 5 mmHg / s caused by body position changes, it triggers the re-calibration of the pressure of the airbag 2 and synchronizes the pressure data to the medical staff terminal via Bluetooth / Wi-Fi.

[0063] Precise pressure control (20 - 30 mmHg) is achieved through closed-loop PID pressure regulation and multi-sensor feedback, avoiding the risks of insufficient or excessive compression in traditional hemostasis.

[0064] Specifically, it also includes a built-in pressure-time optimization model, which dynamically shortens the compression time according to the real-time hemostasis effect. The target hemostasis time is calculated as follows:

[0065]

[0066] where t 初始 = 3 hours, α is the attenuation coefficient, and p 平均 is the average compression pressure.

[0067] Based on the pressure-time optimization model, the compression time is dynamically shortened (target 3 hours) to improve patient comfort.

[0068] Specifically, the control system is linked with the bedside monitor through the wireless communication module to generate a real-time hemostasis report containing the pressure stability index S p and the blood flow recovery rate R b , and the calculation formula is as follows:

[0069]

[0070] The wireless communication module realizes data synchronization with the medical staff terminal and generates a visual report, facilitating remote monitoring and decision-making.

[0071] Specifically, it also includes an inertial measurement unit. When the patient's body position tilt angle θ > 30°, it automatically reduces the pressure of the airbag 2 to the safety threshold P 安全 = 15 mmHg.

[0072] The inertial measurement unit and the body position linkage design can automatically adjust the pressure to the safety threshold to prevent local ischemia caused by body position changes.

[0073] Specifically, it also includes an emergency pressure relief mode, where the pressure relief rate can be adjusted within the range of 0.5 - 2.0 L / min, and the response time t of the pressure relief valve 响应 < 0.5 seconds.

[0074] The emergency pressure relief mode (response < 0.5 seconds) and the multi-modal safety guarantee mechanism ensure rapid decompression in case of emergencies, comprehensively enhancing the safety, efficiency, and intelligence level of postoperative hemostasis.

[0075] The device is fixed to the patient's leg through a restraint strap. The artery positioning module uses ultrasound and infrared spectroscopy to identify the puncture point and surrounding veins, avoiding high-risk areas. The air pump 3 inflates according to the instructions of the control component, and the airbag 2 applies an initial pressure to the puncture point; the sensor 5 continuously monitors the pressure change, and the microprocessor dynamically corrects the error through the PID algorithm to maintain the target pressure range. The Doppler probe 4 continuously detects the distal blood flow velocity, and combines temperature compensation to eliminate environmental interference;

[0076] When the blood flow velocity is lower than the threshold value, an alarm is triggered and the pressure regulation is automatically enhanced. The inertial measurement unit detects the tilting angle of the patient's body position. If it exceeds 30°, the control component 6 immediately reduces the pressure of the airbag 2 to the safety threshold value to prevent local ischemia. The pressure stability index and blood flow recovery rate are uploaded to the medical staff terminal through wireless communication to generate a comprehensive hemostasis report to guide subsequent treatment. In case of abnormal situations (such as severe pain or equipment failure), the pressure relief valve rapidly releases air at a preset rate to ensure the safety of the patient.

[0077] Through the multi-modal intelligent control and real-time feedback mechanism, the hemostasis safety and efficiency have been significantly improved. First, the device adopts a closed-loop PID pressure regulation algorithm and multi-sensor fusion technology to dynamically maintain the target pressure range (20 - 30 mmHg), combines the sensor at the bottom of the airbag to continuously monitor the pressure change, and precisely corrects the error through the microprocessor to avoid the risk of complications caused by insufficient or excessive compression in traditional hemostasis. Second, the Doppler probe integrates a temperature compensation module, compensates for the interference of environmental temperature on blood flow monitoring through a formula, triggers an alarm when the distal blood flow velocity is lower than 15 cm / s, and combines the ultrasound and infrared spectroscopy analysis of the artery positioning module to accurately identify and avoid the venous area, effectively reducing the probability of thrombus formation. In addition, the pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostasis effect, improving the patient's comfort while ensuring the hemostasis effect.

[0078] The tilting angle of the patient's body position is continuously detected through the inertial measurement unit. When it exceeds 30°, the airbag pressure is automatically reduced to the safety threshold value (15 mmHg) to prevent local ischemia caused by body position changes. The response time of the emergency pressure relief mode is less than 0.5 seconds, and the pressure relief rate is adjustable (0.5 - 2.0 L / min) to ensure rapid decompression in case of emergencies.

[0079] Specifically, based on the reinforcement learning algorithm, the proportional gain Kp, integral gain Ki, and derivative gain Kd are adjusted in real time according to the patient's physiological parameters (including blood pressure, heart rate, and body position change angle θ). i i d d

[0080]

[0081] where N is the Gaussian distribution function, the perturbation range is determined by Q-learning optimization, and the goal is to minimize the comprehensive cost function of pressure control error and energy consumption.

[0082] Specifically, the dimension of the extended fuzzy input variables is expanded, and the blood flow velocity gradient and local temperature gradient are added as fuzzy rule inputs, and a three-dimensional fuzzy rule table is designed. The rule form is as follows:

[0083]

[0084] where Fθ, is the fuzzy subset of the input variable, G is the fuzzy subset of the output adjustment amount, the membership function adopts the Gaussian function, and the parameters are optimized by clinical data clustering analysis.

[0085] Specifically, the recursive least squares method (RLS) is introduced to identify the controlled object model online, and the parameters of the PID controller and the consequent parameters of the fuzzy rules are updated in real time. The update formula is as follows:

[0086]

[0087] where θ is the parameter vector to be identified, φ is the regression vector, ∈ is the prediction error, P is the covariance matrix, and λ is the forgetting factor to ensure the tracking ability of the algorithm for time-varying systems.

[0088] Specifically, the multi-modal sensor fusion technology is adopted, integrating a pressure sensor array, a blood flow velocity sensor, and a temperature sensor. The extended Kalman filter (EKF) is used to achieve multi-source data fusion. The state estimation formula is as follows:

[0089]

[0090] where K k is the Kalman gain matrix, h(·) is the nonlinear observation function, and the unscented transform (UT) is used to process the nonlinear terms to improve the state estimation accuracy.

[0091] Specifically, the PID controller also includes a patient-specific parameter adaptation module, which constructs a personalized control model based on patient physiological parameters (age, weight, vascular elastic modulus), and online corrects the PID parameters through an offline-trained support vector regression (SVR) model. The correction formula is:

[0092]

[0093] where αi is the support vector coefficient, K(·,·) is the kernel function, xi is the training sample, and b is the bias term, realizing precise control of "one policy for one person".

[0094] The control system introduces a reinforcement learning algorithm and a fuzzy PID controller, constructs a personalized control model in combination with patient physiological parameters (such as blood pressure, heart rate, vascular elastic modulus), and realizes precise regulation of "one policy for one person" through online parameter optimization. The wireless communication module is linked with the medical staff terminal to generate a visual report including the pressure stability index and the blood flow recovery rate in real time, supporting remote monitoring and decision-making, and comprehensively improving the intelligent level and clinical operability of postoperative hemostasis.

[0095] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0096] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "plurality" is two or more, unless otherwise specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0099] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not have to be directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0100] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0101] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-controlled hemostasis device after femoral artery puncture, characterized in that, Comprising: An assembly panel (1); A number of airbags (2), arranged at the bottom of the assembly panel (1); An air pump (3), arranged at the top of the assembly panel (1) for controlling the contraction of each airbag (2); A control member (6), arranged at the top of the assembly panel (1) for controlling the air pump (3); A Doppler probe (4), arranged at the bottom of the assembly panel (1) for detecting the blood flow velocity at the distal end of the puncture point.

2. The pressure control hemostasis device after femoral artery puncture according to claim 1, wherein: It further includes a sensor (5) arranged at the bottom of the airbag (2), and the sensor (5) is electrically connected to the control member (6).

3. The monitoring intelligent control system of a pressure control hemostasis device after femoral artery puncture according to claim 1, wherein: One end of the assembly panel (1) is provided with a first restraint strap, and the other end of the assembly panel (1) is provided with a second restraint strap.

4. A monitoring intelligent control system for a pressure control hemostasis device after femoral artery puncture, which is used for the pressure control hemostasis device after femoral artery puncture according to any one of claims 1-3, and is characterized in that, The control system includes: An artery positioning module, integrating an ultrasonic sensor array and an infrared spectroscopy unit, and based on an image edge detection algorithm, it can identify the femoral artery puncture point and the surrounding vein distribution in real time. The edge detection formula is: Among them, G is the Gaussian wave kernel, and I x , I y are the image gradients; A pressure regulation module, dynamically adjusting the pressure of the airbag (2) through a PID algorithm, with the target pressure being 20 - 30 mmHg. The pressure error correction formula is: where e(t) = P 目标 - P 实际 , Kp, K i , K d are preset parameters; A blood flow monitoring unit, real-time detecting the blood flow velocity V at the distal end of the puncture point through the Doppler probe (4), and triggering an alarm when V < 15 cm / s.

5. The monitoring intelligent control system of a femoral artery puncture postoperative pressure control hemostasis device according to claim 4, characterized in that: The artery positioning module combines infrared spectroscopy to analyze the venous oxygen saturation. The vein recognition formula is: where k is a calibration coefficient. When S v O2 > 75%, it is marked as the venous area and compression is avoided.

6. The monitoring intelligent control system of a femoral artery puncture postoperative pressure control hemostasis device according to claim 4, characterized in that: The pressure regulation module adopts a closed-loop feedback mechanism. When the change rate of pressure ΔP / Δt > 5 mmHg / s caused by body position changes, it triggers the re-calibration of the pressure of the airbag (2), and synchronizes the pressure data to the medical staff terminal through Bluetooth / Wi-Fi.

7. The monitoring intelligent control system of a pressure control hemostasis device after femoral artery puncture according to claim 4, characterized in that: It further includes a built-in pressure-time optimization model, dynamically shortening the compression time according to the real-time hemostasis effect. The target hemostasis time is calculated as: where t 初始 = 3 hours, α is the attenuation coefficient, and p 平均 is the average compression pressure.

8. The monitoring intelligent control system of a pressure control hemostasis device after femoral artery puncture according to claim 4, characterized in that: The control system is linked with the bedside monitor through a wireless communication module to generate a hemostasis report in real time, including the pressure stability index S p and the blood flow recovery rate R b , and the calculation formula is:

9. The monitoring intelligent control system of a pressure control hemostasis device after femoral artery puncture according to claim 4, wherein: It also includes an inertial measurement unit. When the tilting angle θ of the patient's body position is greater than 30°, the pressure of the airbag (2) is automatically reduced to the safety threshold P 安全 = 15 mmHg.

10. The monitoring intelligent control system of a pressure-controlled hemostasis device after femoral artery puncture according to claim 4, characterized in that: It also includes an emergency pressure relief mode, where the adjustable range of the pressure relief rate is 0.5 - 2.0 L / min, and the response time t of the pressure relief valve 响应 < 0.5 s.

Images