A pediatric pneumatic hemostasis system for improving post-decompression secondary injury

Abstract

The present application relates to the technical field of medical instrument data management, and specifically discloses a pediatric pneumatic hemostasis system for improving secondary injury after decompression, which is used to solve the problem that the existing tourniquet cannot set and adjust the inflation pressure of the tourniquet to improve the injury formed before the deflation of the pediatric pneumatic hemostasis system, and can also monitor and analyze hemostasis monitoring data in real time to ensure good hemostasis effect, and comprises an intelligent hemostasis instrument main body, a forearm tourniquet, an upper arm tourniquet, a hemostasis pressurizing module and a partial pressure buffer module; the tourniquet pressure is adjusted individually according to the age, height, weight and limb size of the child through the integrated information input and data acquisition module, the blood pressure, heart rate and subcutaneous hemorrhage are monitored in real time, the pressure is dynamically optimized, the partial pressure buffer module adjusts the gas pressure in the tourniquet, the pressure is ensured to be uniform, the tissue injury is reduced, the secondary injury caused by rapid deflation is effectively avoided, and the risk of nerve, blood vessel and skin injury is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device data management technology, and more specifically, to a pediatric pneumatic hemostasis system for improving post-decompression collateral injury. Background Technology

[0002] A pneumatic tourniquet is a hemostatic tool that applies mechanical pressure to the major arteries of a limb to block blood flow, providing a bloodless surgical field. The tourniquet on a pneumatic tourniquet is inflated until the wound is sutured, increasing the risk of postoperative complications. Surgeons must weigh the potential adverse effects of delayed deflation against the risks of prolonged tourniquet inflation to determine the appropriate timing for tourniquet deflation. The tourniquet pressure setting is closely related to the patient's limb size, age, and blood pressure. Too low a pressure only blocks venous blood flow, failing to block arterial blood flow, leading to continued bleeding and ineffective hemostasis. Too high a pressure can cause limb numbness and other neurological damage. Injuries can lead to decreased patient cooperation and cause soft tissue damage such as skin, blood vessels, muscles, and nerves, potentially triggering complications like shock. Children's skin flexibility and muscle strength differ significantly from adults. Under the same conditions, the safe timeframe for pneumatic tourniquet hemostasis in children is relatively short. Using adult pneumatic tourniquet pressure and placement timeframes can cause subcutaneous bleeding or even pressure sores on the limbs, resulting in post-decompression collateral damage. Therefore, how to set and adjust the tourniquet inflation pressure to mitigate damage before deflating the pneumatic tourniquet system in children, while simultaneously monitoring and analyzing hemostasis data in real time to ensure effective hemostasis, has become a pressing issue. Summary of the Invention

[0003] To overcome the aforementioned deficiencies of the prior art, this invention provides a pediatric pneumatic hemostasis system for improving collateral damage after decompression. By integrating information input and data acquisition modules, the system can personalize the tourniquet pressure according to the child's age, height, weight, and limb size, monitor blood pressure, heart rate, and subcutaneous bleeding in real time, dynamically optimize pressure, and use a pressure buffer module to regulate the air pressure inside the tourniquet to ensure uniform pressure, reduce tissue damage, effectively avoid collateral damage caused by rapid decompression, and significantly reduce the risk of nerve, blood vessel, and skin damage.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A pediatric pneumatic hemostasis system for improving post-decompression collateral injury includes an intelligent hemostat main body, a forearm tourniquet, an upper arm tourniquet, a hemostasis and pressure application module, and a pressure buffer module. The intelligent hemostat main body includes an information input module, a data acquisition module, and a data analysis module. The intelligent hemostat main body is connected to the hemostasis and pressure application module, the tourniquet pressure application module is connected to the pressure buffer module, and the pressure buffer module is connected to both the forearm tourniquet and the upper arm tourniquet. The information input module is used to input the child's age, height, and weight, and transmit the input data to the data acquisition module. The data acquisition module is used to collect the child's forearm diameter, upper arm diameter, blood pressure, heart rate, and number of subcutaneous hemorrhages, and transmit the data to the data analysis module. The data analysis module is used to analyze the child's age, height, weight, forearm diameter, and upper arm... The system inputs a preset formula for hemostasis and inflation pressure, outputting a hemostasis and inflation pressure setting value suitable for children. It inputs blood pressure, heart rate, and the number of subcutaneous bleeding spots into a preset formula for adjusting hemostasis and inflation pressure, outputting a hemostasis and inflation pressure adjustment coefficient suitable for the current hemostasis status of the child. This allows for real-time adjustment of the hemostasis and inflation pressure. The hemostasis pressurization module inflates and pressurizes the system based on the output data from the data analysis module. The pressure distribution buffer module distributes the air pressure within the forearm and upper arm tourniquets, adjusting the pressure in real-time according to a preset pressure distribution buffer formula. This reduces pressure on the child's limbs, preventing subcutaneous bleeding or pressure sores caused by prolonged tourniquet pressure. It also continues to apply air pressure hemostasis after the child's limbs have relaxed, buffering the air pressure when the tourniquet is temporarily loosened.

[0006] As a further aspect of the present invention, the main body of the intelligent hemostat is used to manage the start-up and stop-up of the entire system, as well as monitor the hemostasis status, receive data from various modules, provide preset formula parameter input, view real-time data and system status, and receive system warnings and instructions. The top of the main body of the intelligent hemostat is equipped with a display screen.

[0007] As a further embodiment of the present invention, both the forearm tourniquet and the upper arm tourniquet have dressings on one side of the arm they are attached to, and both the forearm tourniquet and the upper arm tourniquet include an inflatable airbag, a hemostatic cuff, and a tourniquet adjustment module.

[0008] As a further embodiment of the present invention, the tourniquet adjustment module includes a tightening connection component, a widening component, a connecting and winding component, and a pull rope winding component. The tightening connection component is used to tightly fit the upper arm tourniquet and the forearm tourniquet onto the child's upper arm and forearm. The widening component is used to adjust the width of the upper arm tourniquet and the forearm tourniquet, adjusting the width to one-third of the length of the child's upper arm and one-quarter of the length of the forearm, respectively. The connecting and winding component is used to adjust the length of the forearm tourniquet and the upper arm tourniquet. The pull rope winding component is used to assist in quickly adjusting the position and tightness of the tourniquet to cope with immediate adjustments in emergency situations.

[0009] As a further embodiment of the present invention, the tightening connection assembly includes an inner layer of degreased bandage, a middle layer of connection reinforcement, and an outer layer of impermeable membrane.

[0010] As a further embodiment of the present invention, the pressure buffer module is connected to the main body of the intelligent hemostat via an inflation inlet tube, and the pressure buffer module is connected to the upper arm tourniquet and the forearm tourniquet via an upper arm inflation tube and a forearm inflation tube, respectively.

[0011] As a further embodiment of the present invention, the data acquisition module includes a finger sensing unit and a camera for identifying the number of subcutaneous bleeding spots and the diameter of the child's arm. The finger sensing unit includes a heart rate sensor and a blood pressure sensor.

[0012] As a further aspect of the present invention, in the data analysis module, the preset hemostasis and inflation pressure setting formula uses the product of the basic pressure setting value, the ratio of the child's height to the standard height, the ratio of the child's weight to the standard weight, and the age adjustment function value as the hemostasis and inflation pressure setting value suitable for the child. The preset hemostasis and inflation pressure setting formula is as follows:

[0013]

[0014] In the formula: P set P is the appropriate hemostatic inflation pressure setting for children. base Base pressure setpoint, based on adult standard pressure setting, H sr For the child's height, H std The standard height corresponding to the input child's age is taken as the average of the maximum and minimum heights within the corresponding child's age and height range, W. sr For the child's weight, W std To input the standard weight corresponding to a child's age, the average of the maximum and minimum weights within the corresponding child's age range is taken. f(A) is the child's age adjustment function, where A is the child's input age. In the formula, k1, k2, and k3 are coefficients obtained by fitting historical data.

[0015] As a further aspect of the present invention, in the data analysis module, the preset hemostatic inflation pressure adjustment formula is based on a linear correction value of blood pressure, heart rate, and the number of subcutaneous bleeding spots, and provides feedback to adjust the hemostatic inflation pressure setting value suitable for children. The preset hemostatic inflation pressure adjustment formula is as follows:

[0016] P d =P set ×(1+k BP S BP +k HR S HR +k BL S BL )

[0017] In the formula: P d S is the dynamically adjusted hemostatic inflation pressure. BP S represents the change in blood pressure. HR S represents the change in heart rate. BL k represents the number of subcutaneous hemorrhage spots. BP k is the blood pressure adjustment factor. HR k is the adjustment factor for heart rate variability. BL This represents the number of subcutaneous hemorrhage spots.

[0018] As a further aspect of the present invention, in the pressure buffer module (5), the preset pressure buffer formula utilizes an exponential decay term and a sinusoidal intermittent adjustment term to adjust the dynamically adjusted hemostatic inflation pressure through fluctuation decay. The preset pressure buffer formula is as follows:

[0019]

[0020] In the formula: P s To input hemostatic inflation pressure for the upper arm tourniquet (3) and the forearm tourniquet (2), ρ is the exponential decay term, t is the pressure application time from the start of inflation, T is the time constant used to adjust the rate at which the pressure decays over time, ρ is the amplitude coefficient used to adjust the pressure fluctuation amplitude during intermittent inflation and deflation, and ω is the angular frequency used to adjust the frequency of intermittent inflation and deflation.

[0021] The technical effects and advantages of this invention compared to existing technologies are as follows: Through an integrated information input module and data acquisition module, this invention can personalize the tourniquet pressure according to the child's age, height, weight, and specific limb dimensions (forearm diameter, upper arm diameter), thereby providing more precise and safer hemostasis. It can monitor and analyze the child's blood pressure, heart rate, and the number of subcutaneous bleeding spots in real time, dynamically adjusting the hemostasis pressure based on the analysis results to ensure the tourniquet pressure is always at its optimal level. The pressure-distributing buffer module can regulate the air pressure within the tourniquet in the forearm and upper arm, making the pressure distribution more uniform and reducing tissue damage caused by excessive or uneven pressure. Suitable for pediatric patients, it can effectively buffer pressure changes, avoiding post-decompression collateral damage caused by sudden blood flow changes due to rapid deflation, and significantly reducing nerve, vascular, and skin damage caused by improper tourniquet use. Attached Figure Description

[0022] Figure 1 This is a system block diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure and the connection tightening components of the present invention;

[0024] In the diagram: 1-Main body of the intelligent hemostat, 2-Forearm tourniquet, 3-Upper arm tourniquet, 4-Hemostasis and pressure module, 5-Pressure buffer module, 6-Display screen, 7-Finger sensor unit, 8-Camera, 9-Inflatable airbag, 10-Hemostatic cuff, 11-Inner layer of degreased bandage, 12-Connecting and reinforcing middle layer, 13-Outer layer of impermeable membrane. Detailed Implementation

[0025] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described technical solutions are only a part of this invention, not all of it. All other technical solutions obtained by those skilled in the art based on the technical solutions of this invention without inventive effort are within the scope of protection of this invention.

[0026] like Figure 1 and Figure 2 As shown, this invention proposes a pediatric pneumatic hemostasis system for improving post-decompression collateral injuries. The system includes an intelligent hemostasis device body 1, a forearm tourniquet 2, an upper arm tourniquet 3, a hemostasis and pressure application module 4, and a pressure buffer module 5. The intelligent hemostasis device body 1 includes an information input module, a data acquisition module, and a data analysis module. The intelligent hemostasis device body 1 is connected to the hemostasis and pressure application module 4, the tourniquet pressure application module 4 is connected to the pressure buffer module 5, and the pressure buffer module 5 is connected to both the forearm tourniquet 2 and the upper arm tourniquet 3. The information input module is used to input the child's age, height, and weight, and transmit the input data to the data acquisition module. The data acquisition module is used to collect the child's forearm diameter, upper arm diameter, blood pressure, heart rate, and number of subcutaneous hemorrhage spots, and transmit the data to the data analysis module. The data analysis module is used to analyze the child's age, height, and weight... The system inputs the weight, forearm diameter, and upper arm diameter into a preset hemostatic inflation pressure setting formula, outputting a hemostatic inflation pressure setting value suitable for children. It inputs the blood pressure, heart rate, and number of subcutaneous bleeding spots into a preset hemostatic inflation pressure adjustment formula, outputting a hemostatic inflation pressure adjustment coefficient suitable for the current hemostasis status of the child, and adjusts the hemostatic inflation pressure in real time. The hemostatic pressurization module 4 is used to inflate and pressurize based on the output data of the data analysis module. The pressure distribution buffer module 5 distributes the air pressure within the forearm tourniquet 2 and upper arm tourniquet 3, adjusting the air pressure in real time according to a preset pressure distribution buffer formula to reduce pressure on the child's limbs, preventing subcutaneous bleeding or pressure sores caused by prolonged tourniquet pressure. It also continues pneumatic hemostasis after the child's limbs are relieved, buffering the air pressure when the tourniquet is temporarily loosened. The hemostasis and pressure module 4 is equipped with a miniature air pump. The pressure buffer module 5 is connected to the miniature air pump through an inflation tube. The miniature air pump inflates the airbags 9 in the forearm tourniquet 2 and the upper arm tourniquet 3 of the pressure buffer module 5.

[0027] Post-decompression collateral injury refers to the injury or complication that may occur when pressure is rapidly released after applying pressure with a tourniquet. This injury occurs because the tourniquet applies pressure to the limb for an extended period, blocking blood flow. When the pressure is suddenly released, blood flow is rapidly restored, leading to tissue damage and other related problems. Post-decompression collateral injuries that may occur during hemostasis in children include:

[0028] (1) Re-pressure syndrome: After the tourniquet is released, blood flow to the limb that has been compressed for a long time is restored, leading to a large accumulation of metabolic waste (such as lactic acid) and potassium ions, which rapidly enter the systemic circulation, causing metabolic disorders and electrolyte imbalances. These changes can lead to muscle damage, kidney damage, and even arrhythmias.

[0029] (2) Local tissue ischemia-reperfusion injury: Local tissues are reperfused after prolonged ischemia, leading to inflammatory response and oxidative stress, which damages the vascular endothelium and surrounding soft tissues. This injury is more pronounced in children because their tissues are more delicate and more sensitive to damage.

[0030] (3) Nerve damage: The pressure applied by the tourniquet compresses the nerves below, especially when the pressure is too great or the application time is too long. After the tourniquet is released, the compressed nerves may exhibit dysfunction, such as sensory abnormalities, pain, or motor dysfunction.

[0031] (4) Muscle injury: The pressure of the tourniquet can cause prolonged ischemia in the local muscles, resulting in necrosis or dysfunction of the muscle tissue after release. Children's muscles are more fragile than adults' and are more sensitive to this kind of injury.

[0032] (5) Skin and soft tissue injuries: The physical pressure of a tourniquet can cause skin and underlying soft tissue injuries, including pressure sores and subcutaneous bleeding. Children are more prone to these injuries because their skin is thinner.

[0033] The pressure divider buffer module 5 is provided with a buffer air pressure chamber 14 at the top, and a lifting plate 15 is provided on one side of the buffer air pressure chamber 14.

[0034] The pressure chamber 14, acting as a pressure storage unit, can rapidly release or absorb gas when needed, helping to smoothly adjust the pressure within the tourniquet, reducing the physiological impact of pressure changes on the patient, and avoiding side effects caused by sudden pressure changes. The lifting plate 15 can quickly respond to system commands, compressing or releasing the gas within the pressure chamber, adjusting the pressure in real time to ensure the tourniquet pressure is always at an optimal level to meet the needs of the surgical procedure. The combined use of the pressure chamber 14 and the lifting plate 15 allows for more precise control of the pressure. The movement of the lifting plate 15 can precisely increase or decrease the amount of gas within the chamber as needed, thereby finely adjusting the tourniquet pressure, which is particularly important for pediatric surgeries requiring precise pressure control. Using the pressure chamber 14 acts as a buffer system, preventing external pressure fluctuations from directly affecting the tourniquet pressure. This is crucial for maintaining a stable surgical environment and protecting patient safety.

[0035] This invention, through its integrated information input and data acquisition modules, can personalize the tourniquet pressure according to the child's age, height, weight, and specific limb dimensions (forearm diameter, upper arm diameter), thereby providing more precise and safer hemostasis. It can monitor and analyze the child's blood pressure, heart rate, and the number of subcutaneous bleeding spots in real time, dynamically adjusting the hemostasis pressure based on the analysis results to ensure the tourniquet pressure is always at its optimal level. The pressure-distributing buffer module can regulate the air pressure within the tourniquet in the forearm and upper arm, making the pressure distribution more uniform and reducing tissue damage caused by excessive or uneven pressure. Suitable for pediatric patients, it effectively buffers pressure changes, avoiding post-decompression collateral damage caused by sudden blood flow changes due to rapid deflation, and significantly reduces nerve, vascular, and skin damage caused by improper tourniquet use.

[0036] It should be noted that, as Figure 2 As shown, the main body 1 of the intelligent hemostat is used to manage the start-up and stop-up of the entire system, as well as monitor the hemostasis status, receive data from various modules, provide preset formula parameter input, view real-time data and system status, and receive system warnings and instructions. The top of the main body 1 of the intelligent hemostat is equipped with a display screen 6.

[0037] Both the forearm tourniquet 2 and the upper arm tourniquet 3 have dressings on one side of the arm they fit together. Both the forearm tourniquet 2 and the upper arm tourniquet 3 include an inflatable airbag 9, a hemostatic cuff 10, and a tourniquet adjustment module.

[0038] The dressing provides a soft padding layer, reducing pressure and friction from direct skin contact. This is especially important for children, whose skin is more sensitive and delicate, making it more susceptible to damage from pressure or friction.

[0039] The tourniquet adjustment module includes a tightening connection component, a widening component, a connecting and retracting component, and a pull cord retracting component. The tightening connection component is used to tightly fit the upper arm tourniquet 3 and the forearm tourniquet 2 onto the child's upper arm and forearm. The widening component is used to adjust the width of the upper arm tourniquet 3 and the forearm tourniquet 2, adjusting the width to one-third of the child's upper arm length and one-quarter of the forearm length, respectively. The connecting and retracting component is used to adjust the length of the forearm tourniquet 2 and the upper arm tourniquet 3. The pull cord retracting component is used to assist in quickly adjusting the position and tightness of the tourniquet to cope with immediate adjustments in emergency situations.

[0040] The width of a tourniquet is crucial for pressure distribution. A wider tourniquet distributes pressure more evenly across the limb, reducing the risk of blood flow obstruction or tissue damage caused by localized pressure. A one-third to one-quarter tourniquet ratio provides sufficient coverage to effectively distribute pressure, thus reducing pressure on a single point. The width of the tourniquet is directly related to the effectiveness of hemostasis. An appropriately wide tourniquet can more effectively block blood flow, especially when controlling significant bleeding. A wider tourniquet can better close blood vessels rather than simply compress them, contributing to hemostasis. A tourniquet that is too narrow can damage underlying tissues due to excessive pressure, particularly nerve and muscle tissue. By setting the tourniquet width as a proportion of the limb length, the pressure effect can be optimized while minimizing the risk of potential injury. Children's limbs are smaller than adults', making the selection of an appropriate tourniquet width essential for protecting children's delicate skin and tissues. A one-third to one-quarter width ratio takes into account the proportions and sensitivity of children's limbs, ensuring safety and comfort during use. The upper arm and forearm differ in anatomical structure and function, resulting in different sensitivities and tolerances to pressure. Adapting to these differences and setting different width ratios can help optimize hemostasis in different areas and reduce risks.

[0041] It should be noted that, as Figure 2 As shown, the tightening connection assembly includes a degreased bandage inner layer 11, a connecting reinforcement middle layer 12, and an impermeable membrane outer layer 13.

[0042] The inner layer 11 of the degreased bandage provides a soft contact surface, which is especially important for children's sensitive skin. This material reduces friction and pressure on the skin, lowering the risk of skin irritation and damage, making the tourniquet more comfortable to wear. The connecting and reinforcing middle layer 12 is typically made of a stronger material, providing additional strength and durability. This layer ensures the structural integrity of the tourniquet during repeated use and prolonged pressure application, preventing the bandage from stretching, deforming, or breaking. The impermeable outer membrane 13, as the outermost layer, prevents liquids (such as blood and disinfectants) from penetrating into the inner and middle layers of the bandage. This not only protects the structure of the bandage but also prevents bacterial growth and cross-infection caused by liquid accumulation, ensuring hygiene and safety during use.

[0043] It should be noted that the pressure buffer module 5 is connected to the main body 1 of the intelligent hemostat through the inflation tube, and the pressure buffer module 5 is connected to the upper arm tourniquet 3 and the forearm tourniquet 2 through the upper arm inflation tube and the forearm inflation tube, respectively.

[0044] It should be noted that the data acquisition module includes a finger sensing unit 7 and a camera 8 for identifying the number of subcutaneous bleeding spots and the diameter of the child's arm. The finger sensing unit 7 includes a heart rate sensor and a blood pressure sensor.

[0045] It should be noted that in the data analysis module, the preset hemostasis and inflation pressure setting formula uses the product of the baseline pressure setting value, the ratio of the child's height to the standard height, the ratio of the child's weight to the standard weight, and the age adjustment function value as the hemostasis and inflation pressure setting value suitable for children. The preset hemostasis and inflation pressure setting formula is as follows:

[0046]

[0047] In the formula: P set P is the appropriate hemostatic inflation pressure setting for children. base Base pressure setpoint, based on adult standard pressure setting, H sr For the child's height, H std The standard height corresponding to the input child's age is taken as the average of the maximum and minimum heights within the corresponding child's age and height range, W. sr For the child's weight, W std To input the standard weight corresponding to a child's age, the average of the maximum and minimum weights within the corresponding child's age range is taken. f(A) is the child's age adjustment function, where A is the child's input age. In the formula, k1, k2, and k3 are coefficients obtained by fitting historical data.

[0048] The formula allows the tourniquet pressure setting to be adjusted according to each child's specific physiological characteristics, including height, weight, and age. This personalized approach is safer and more effective than using standard adult pressure settings because it takes into account the uniqueness of a child's body structure and physiological functions, ensuring that the pressure is effective in stopping bleeding without causing excessive harm. By comparing the child's actual physiological data with age-related standard data (standard height and weight), the formula can more scientifically assess the required pressure adjustment range. Simultaneously, an age adjustment function... The pressure adjustment was further refined to ensure that the pressure setting could adapt to the physiological and developmental conditions of children of different ages. Appropriate pressure settings can reduce side effects and complications caused by improper tourniquet use, such as nerve damage, muscle damage, and skin and soft tissue injury. By precisely controlling the pressure, this method can significantly reduce these risks, especially in sensitive pediatric patients. The dynamic component in the formula... The use of this system allows it to quickly adjust pressure settings based on real-time input data, enabling immediate response to changes in the patient's condition during surgery. This is particularly important for prolonged or complex surgeries. The system analyzes historical data to set k1, k2, and k3, ensuring that tourniquet pressure settings are based on sufficient clinical evidence, thus improving the reliability and effectiveness of treatment.

[0049] It should be noted that in the data analysis module, the preset hemostatic inflation pressure adjustment formula is based on linear correction values ​​for blood pressure, heart rate, and the number of subcutaneous bleeding spots. This formula provides feedback to adjust the hemostatic inflation pressure setting to be suitable for children. The preset hemostatic inflation pressure adjustment formula is as follows:

[0050] P d =P set ×(1+k BP S BP +k HR S HR +k BL S BL )

[0051] In the formula: P d S is the dynamically adjusted hemostatic inflation pressure. BP S represents the change in blood pressure. HR S represents the change in heart rate. BL k represents the number of subcutaneous hemorrhage spots. BP k is the blood pressure adjustment factor. HR k is the adjustment factor for heart rate variability. BL This represents the number of subcutaneous hemorrhage spots.

[0052] The formula incorporates feedback adjustments for blood pressure, heart rate, and the number of subcutaneous bleeding spots, ensuring that tourniquet pressure responds promptly to changes in the child's physiological state. This dynamic adjustment mechanism helps to adjust tourniquet pressure in real time during surgery or treatment to maximize safety and effectiveness. By monitoring key physiological indicators and adjusting tourniquet pressure accordingly, the system can prevent potential risks and complications caused by sudden physiological changes (such as increased or decreased blood pressure, abnormal heart rate, etc.). This approach is particularly important because children's sensitivity and response to physiological pressure differ from adults. Each child's physiological response varies depending on age, health condition, and specific medical circumstances. By taking these individual differences into account, tourniquet pressure adjustment can be more precise and personalized, ensuring that each child receives treatment most suitable for their specific condition. Dynamic pressure adjustment helps maintain optimal hemostasis throughout the surgery or treatment. By preventing excessive or insufficient pressure application, intraoperative bleeding can be effectively reduced, thereby reducing intraoperative complications and postoperative recovery time. The adjustment coefficient k used in the system... BP k HR k BL Based on extensive historical data and clinical research, this provides a data-driven approach to support medical decisions, enhancing the scientific rigor and effectiveness of treatment. Appropriate pressure adjustment can reduce nerve damage, muscle injury, and other soft tissue injuries caused by prolonged or inappropriate pressure. Particularly important for children, appropriate pressure adjustment can prevent secondary injuries caused by excessive stress.

[0053] It should be noted that in pressure buffer module 5, the preset pressure buffer formula uses an exponential decay term and a sinusoidal intermittent adjustment term to adjust the dynamically adjusted hemostatic inflation pressure through fluctuation decay. The preset pressure buffer formula is as follows:

[0054]

[0055] In the formula: P s To input hemostatic inflation pressure for the upper arm tourniquet (3) and the forearm tourniquet (2), ρ is the exponential decay term, t is the pressure application time from the start of inflation, T is the time constant used to adjust the rate at which the pressure decays over time, ρ is the amplitude coefficient used to adjust the pressure fluctuation amplitude during intermittent inflation and deflation, and ω is the angular frequency used to adjust the frequency of intermittent inflation and deflation.

[0056] Exponential decay term This provides a gradual pressure increase method, allowing the system to increase pressure slowly initially, and then gradually approach the set target pressure P over time. dThis method helps prevent injury to children's limbs from sudden increases in pressure, especially in sensitive surgical areas or when prolonged tourniquet application is required. The sinusoidal intermittent adjustment term ρ·sin(ωt) allows the system to simulate physiological blood pressure fluctuations, which are crucial for maintaining microcirculation in local tissues. This periodic pressure adjustment helps prevent ischemic damage to local tissues caused by prolonged uniform pressure, while also mimicking pressure variations in the natural physiological environment, reducing the negative response of tissues to prolonged static pressure. By dynamically adjusting the tourniquet pressure, it is ensured that the tourniquet provides appropriate pressure during surgery, regardless of changes in the child's physiological condition, to maintain effective hemostasis while minimizing damage to surrounding healthy tissues. This increases the child's comfort during surgery and reduces pain and potential long-term side effects caused by improper tourniquet use. Properly adjusting the tourniquet pressure is crucial for intraoperative visualization and postoperative recovery speed. Appropriate pressure adjustment can reduce intraoperative bleeding, provide a better operating environment, reduce tissue damage caused by excessive pressure, and accelerate postoperative recovery. Gradual pressure release and periodic pressure adjustment help prevent re-pressure syndrome and ischemia-reperfusion injury, conditions often caused by excessively rapid pressure release or improper management. The risk of these complications can be mitigated by controlling the manner and rate of pressure recovery.

[0057] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0058] Finally: The above description is only a preferred technical solution of the present invention and is not intended to limit the present invention. 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 pediatric pneumatic hemostasis system for improving post-decompression collateral injury, characterized in that, The device includes a main body (1) of an intelligent hemostat, a forearm tourniquet (2), an upper arm tourniquet (3), a hemostatic pressure module (4), and a pressure buffer module (5). The main body (1) of the intelligent hemostat includes an information input module, a data acquisition module, and a data analysis module. The main body (1) of the intelligent hemostat is connected to the hemostatic pressure module (4), the tourniquet pressure module (4) is connected to the pressure buffer module (5), and the pressure buffer module (5) is connected to both the forearm tourniquet (2) and the upper arm tourniquet (3). The information input module is used to input the child's age, height, and weight, and transmit the input data to the data acquisition module. The data acquisition module is used to collect the child's forearm diameter, upper arm diameter, blood pressure, heart rate, and number of subcutaneous bleeding spots, and transmit the data to the data analysis module. The data analysis module is used to analyze the child's age, height, weight, forearm diameter, and... The upper arm diameter is input into the preset hemostatic inflation pressure setting formula, and the hemostatic inflation pressure setting value adapted to the child is output. The blood pressure, heart rate and number of subcutaneous bleeding spots are input into the preset hemostatic inflation pressure adjustment formula, and the hemostatic inflation pressure adjustment coefficient adapted to the current hemostasis status of the child is output. The hemostatic inflation pressure is adjusted in real time. The hemostatic pressurization module (4) is used to pressurize according to the output data of the data analysis module. The pressure distribution buffer module (5) divides the air pressure in the forearm tourniquet (2) and the upper arm tourniquet (3), and adjusts the air pressure in real time according to the preset pressure distribution buffer formula to reduce the pressure on the limbs of the child patient, avoid the phenomenon of subcutaneous bleeding or pressure sores caused by the long-term pressure of the tourniquet on the limbs of the child patient, and continue to perform air pressure hemostasis after the limbs of the child patient are relieved, and is used to buffer the air pressure when the tourniquet is temporarily loosened.

2. The pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 1, is characterized in that... The main body (1) of the intelligent hemostat is used to manage the start-up inflation, stop inflation, and monitor the hemostasis status of the entire system. It receives data from various modules, provides preset formula parameter input, views real-time data and system status, and receives system warnings and instructions. The top of the main body (1) of the intelligent hemostat is equipped with a display screen (6).

3. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 1, is characterized in that... Both the forearm tourniquet (2) and the upper arm tourniquet (3) have dressings on the side that fits against the arm. Both the forearm tourniquet (2) and the upper arm tourniquet (3) include an inflatable airbag, a hemostatic cuff, and a tourniquet adjustment module.

4. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 3, is characterized in that... The tourniquet adjustment module includes a tightening connection component, a widening component, a connecting and retracting component, and a pull cord retracting component. The tightening connection component is used to tightly fit the upper arm tourniquet (3) and the forearm tourniquet (2) onto the child's upper arm and forearm. The widening component is used to adjust the width of the upper arm tourniquet (3) and the forearm tourniquet (2), adjusting the width to one-third of the length of the child's upper arm and one-quarter of the length of the forearm, respectively. The connecting and retracting component is used to adjust the length of the forearm tourniquet (2) and the upper arm tourniquet (3). The pull cord retracting component is used to assist in quickly adjusting the position and tightness of the tourniquet to cope with immediate adjustments in emergency situations.

5. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 4, characterized in that, The tightening connection assembly contains an inner layer of degreased bandage, a middle layer of connection reinforcement, and an outer layer of impermeable membrane.

6. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 1, characterized in that, The pressure buffer module (5) is connected to the main body (1) of the intelligent hemostat through the inflation tube. The pressure buffer module (5) is connected to the upper arm tourniquet (3) and the forearm tourniquet (2) through the upper arm inflation tube and the forearm inflation tube, respectively.

7. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 1, characterized in that, The data acquisition module includes a finger sensing unit (7) and a camera (8) for identifying the number of subcutaneous bleeding spots and the diameter of the child's arm. The finger sensing unit (7) includes a heart rate sensor and a blood pressure sensor.

8. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 1, characterized in that, In the data analysis module, the preset hemostasis and inflation pressure setting formula uses the product of the baseline pressure setting value, the ratio of the child's height to the standard height, the ratio of the child's weight to the standard weight, and the age adjustment function value as the hemostasis and inflation pressure setting value suitable for children. The preset hemostasis and inflation pressure setting formula is as follows: In the formula: P set P is the appropriate hemostatic inflation pressure setting for children. base Base pressure setpoint, based on adult standard pressure setting, H sr For the child's height, H std The input child's age corresponds to the standard height, and the average of the maximum and minimum heights within the corresponding child's age range is taken as W. sr For the child's weight, W std To input the standard weight corresponding to a child's age, the average of the maximum and minimum weights within the corresponding child's age range is taken. f(A) is the child's age adjustment function, where A is the child's input age. In the formula, k1, k2, and k3 are coefficients obtained by fitting historical data.

9. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 8, characterized in that, In the data analysis module, the preset hemostatic inflation pressure adjustment formula is based on linear correction values ​​for blood pressure, heart rate, and the number of subcutaneous bleeding spots. It provides feedback to adjust the hemostatic inflation pressure setting to be suitable for children. The preset hemostatic inflation pressure adjustment formula is: P d =P set ×(1+k BP S BP +k HR S HR +k BL S BL ) In the formula: P d S is the dynamically adjusted hemostatic inflation pressure. BP S represents the change in blood pressure. HR S represents the change in heart rate. BL k represents the number of subcutaneous hemorrhage spots. BP k is the blood pressure adjustment factor. HR k is the adjustment factor for heart rate variability. BL This represents the number of subcutaneous hemorrhage spots.

10. A pediatric pneumatic hemostasis system for improving collateral injuries after decompression, as described in claim 9, characterized in that, In the pressure buffer module (5), the preset pressure buffer formula uses an exponential decay term and a sinusoidal intermittent adjustment term to adjust the dynamically adjusted hemostatic inflation pressure through fluctuation decay. The preset pressure buffer formula is as follows: In the formula: P s To input hemostatic inflation pressure for the upper arm tourniquet (3) and the forearm tourniquet (2), ρ is the exponential decay term, t is the pressure application time from the start of inflation, T is the time constant used to adjust the rate at which the pressure decays over time, ρ is the amplitude coefficient used to adjust the pressure fluctuation amplitude during intermittent inflation and deflation, and ω is the angular frequency used to adjust the frequency of intermittent inflation and deflation.

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