A post-cardiovascular intervention limb care device

Abstract

This invention discloses a limb care device after cardiovascular interventional surgery, belonging to the field of medical auxiliary device technology. It includes a positioning unit, a compression unit, and a control unit. Through targeted structural design and collaborative control logic, it solves the contradiction between hemostasis and ischemia prevention in postoperative care, while improving nursing efficiency, stability, and safety. It uses the functional zoning of the central balloon in the puncture core area and the annular balloon in the surrounding auxiliary area, combined with the control logic that prioritizes the central balloon over the annular balloon, the annular balloon immediately stops circulation to maintain pressure when the pressure of the central balloon fluctuates. This ensures continuous hemostasis at the puncture site and avoids the risk of ischemia and thrombosis caused by long-term compression. The pressure threshold limitation, circulation reflux design, and emergency pause mechanism form multiple safety protections, reducing the risk of complications such as swelling and pain. It is also suitable for multiple puncture sites and patients of different body types, taking into account both medical and nursing efficiency and patient comfort.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, specifically to a limb care device after cardiovascular interventional surgery. Background Technology

[0002] Cardiovascular interventional procedures have become a major minimally invasive technique for treating cardiovascular diseases such as coronary heart disease and arrhythmia, offering advantages such as minimal trauma and rapid recovery. However, postoperative hemostasis and limb circulation protection at the puncture site remain key nursing tasks. To prevent the compression device from slipping and to ensure its stability at the compression point, a wrapping method is typically used to fix the device and the limb at the compression point. However, this wrapping process often results in excessive pressure on the compression device. Postoperatively, stable pressure must be applied to the puncture site to prevent bleeding from the ruptured blood vessel. Simultaneously, prolonged pressure must be avoided to prevent local tissue ischemia, obstructed venous return, and complications such as limb swelling, pain, and thrombosis. Therefore, effective hemostasis and prevention of ischemia, as well as promoting venous return, are the most crucial aspects of postoperative limb care that require a balanced approach.

[0003] Existing postoperative limb care devices include traditional manual compression tools, which rely on the experience of medical staff to control the compression force. These tools suffer from uneven force, easy displacement, and lack of dynamic adjustment. Continuous compression can lead to limb ischemia, and releasing the pressure may cause bleeding at the puncture site. There are also single-balloon compression devices, which achieve hemostasis through inflation. However, the integrated balloon design can only provide a single pressure value, and continuous compression can block local blood flow, failing to balance the needs of hemostasis and ischemia prevention. There are also balloon devices with pressure adjustment functions, which adjust the overall balloon pressure through pressure sensors. The compression and relaxation cycle is achieved by raising and lowering the overall pressure. During the relaxation phase, the compression at the puncture site may fail, increasing the risk of bleeding.

[0004] Therefore, there is a need for a technology that can achieve stable pressure and hemostasis at the puncture site, decompression and reflux of surrounding tissue circulation, and balance the needs of hemostasis and ischemia prevention through dual-zone synergistic control logic, in order to make up for the shortcomings of existing technologies. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, the present invention provides a limb care device after cardiovascular interventional surgery.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution: A limb care device after cardiovascular interventional surgery includes a positioning part, a compression part, and a control part. The positioning part includes a support bag, and the support bag is provided with a compression part. The compression part includes an annular bag and a central bag. The support bag is provided with two sets of ventilation components. The first set of ventilation components is connected to the annular bag, and the second set of ventilation components is connected to the central bag. The compression part is provided with a control part, and the control part includes two sets of control components. The first set of control components is connected to the annular bag, and the second set of control components is connected to the central bag.

[0007] Optionally, the positioning part further includes a ring band, which is fixedly connected to the outside of the support bag, and a control airbag is fixedly connected to the support bag.

[0008] Optionally, the compression part further includes a central belt, which is fixedly connected to the upper side of the ring belt; The ventilation assembly includes a shunt tube, the first end of which is fixedly connected to the support bag, the second end of the shunt tube of the first group of ventilation assemblies is fixedly connected to the ring bag, and the second end of the shunt tube of the second group of ventilation assemblies is fixedly connected to the middle bag. A spherical shell is fixedly connected in the middle of the shunt tube. The spherical shell has connecting holes on both sides, which are connected to the shunt tube. An upper hole is opened on the upper side of the spherical shell. A rotating column is rotatably connected in the upper hole. A rotating handle is fixedly connected on the upper side of the rotating column. A rotating ball is fixedly connected in the spherical shell. A through hole is opened in the middle of the rotating ball. By controlling the rotating handle, the through hole can be aligned with the connecting hole, or the through hole can be aligned with the position of the spherical shell away from the connecting hole, thereby controlling the communication relationship between the sac support, the annular sac, and the middle sac.

[0009] Optionally, the control component includes a motor, a screw at the drive end of the motor, a fixed base fixedly connected between the motor and the central belt, an air cylinder at the screw position of the central belt, a fixed platform fixedly connected between the air cylinder and the central belt, a square rod on the screw, a threaded hole for threaded connection with the screw on the square rod, a limiting plate on the side of the air cylinder near the motor, the limiting plate fixedly connected to the fixed platform, the limiting plate and the square rod limitingly engaging, and a piston fixedly connected to the inside of the air cylinder on the square rod.

[0010] Optionally, sensors are fixedly connected between the inner and outer walls of the central sac and the annular sac.

[0011] A limb care system following cardiovascular interventional procedures includes: S1: Pressure acquisition and feedback, the sensor between the inner wall and the outer wall of the middle bladder and the lower side of the annular bladder, collects the actual compression pressure of the two zones in real time at a frequency of 5-10Hz, and converts the pressure signal into an electrical signal and transmits it to the single-chip microcomputer carried by the motor of the control unit. The sensor is directly attached to the side of the airbag that contacts the limb to ensure that the collected data is the actual compression pressure and to avoid the influence of airway pressure deviation on the judgment. S2: Threshold comparison and judgment module. The control unit presets the core threshold and makes real-time judgments based on sensor data. Inflation determination: preset minimum threshold P1, safety upper limit threshold P2; if the collected pressure < P1, determine "needs inflation"; if > P2, determine "needs depressurization"; if within the P1-P2 range, determine "pressure stable"; Circumferential pressure determination: Preset inflation target pressure P 辅充 Target pressure for venting P 辅放 The cycle time is T, including the pressure holding time T1 and the decompression time T2; the cycle is initiated only when the pressure in the pleural sac is "stable": if P is not reached... 辅放 Then "inflate", inflate to P 辅放 If the pressure reaches T1, then "pressure needs to be released" and the pressure should be released to P. 辅充 If the holding time reaches T2, "refilling is required"; if the pressure in the middle sac fluctuates, "pause the cycle"; Among them, the central capsule has a higher priority than the annular capsule; P1 is 15 kPa; P2 is 25 kPa; P 辅充 5 kPa; P 辅放 15 kPa; cycle time T is 30 seconds; holding time T1 is 20 seconds; decompression time T2 is 10 seconds.

[0012] S3: Control component execution; the control unit drives the corresponding control component to perform actions based on the judgment result. When the middle bladder is inflated, the motor of the second control unit rotates forward, driving the screw to rotate. The square rod pushes the piston along the limit plate to inflate the middle bladder until the sensor feedback pressure reaches the P1-P2 range, at which point the motor stops. When the middle bladder is depressurized, the motor rotates in reverse, the piston retracts, and the middle bladder is depressurized to the threshold range. When the bladder is inflated ("Inflation Required"), the motor of the first control unit rotates forward, and the piston pushes the bladder to inflate to P. 辅放 When pressure is maintained, the motor stops; when pressure needs to be released, the motor reverses and the piston retracts to release pressure to P. 辅充 ; It is important to note that during the "pause cycle" operation, the motor locks after completing its action. First, the "inflation required" command is executed, and the piston propels the motor to inflate to P. 辅放 It then maintains its current position, with the annular sac maintaining the existing pressure.

[0013] S4: Dynamic closed-loop calibration: During the execution process, the sensor continuously feeds back pressure data, and the control unit compares the data with the threshold in real time: if the pressure meets the standard, the current state is maintained; if the pressure fluctuates, the "judgment" and "execution" steps of the priority middle bag are immediately repeated until the pressure returns to the preset range. This allows the system to prioritize compression of the intervention point in case of accidents caused by limb movement, bleeding, or other factors that cause the pressure to deviate from the threshold. This is achieved through a special "circulation pause" action, in conjunction with the central balloon, which maintains compression while promoting peripheral blood flow.

[0014] The beneficial effects of this invention are: A limb care device for post-cardiovascular interventional procedures. The core benefit of this technical solution lies in resolving the contradiction between hemostasis and ischemia prevention in post-operative care through targeted structural design and collaborative control logic, while simultaneously improving nursing efficiency, stability, and safety. It utilizes functional zoning of the central balloon in the puncture core area and the annular balloon in the surrounding auxiliary area, coupled with control logic prioritizing the central balloon over the annular balloon. The central balloon achieves precise pressure stabilization and hemostasis through a dual threshold of 15-25 kPa and mechanical transmission. The annular balloon, with a 15 kPa inflation and 5 kPa depressurization cycle of 30 seconds, simulates a pump to promote reflux. Furthermore, when the pressure of the central balloon fluctuates, the annular balloon immediately pauses circulation to maintain pressure, ensuring continuous hemostasis at the puncture site while avoiding the risks of ischemia and thrombosis caused by prolonged compression. (Ventilation group) The device features a shunt tube and a rotating bulb structure that allow for simultaneous inflation and independent pressure control. Initially, the balloon is controlled to achieve rapid, synchronized positioning and preliminary compression. Later, the airway is cut off to ensure that the dual-zone pressure control does not interfere with each other, solving the problems of cumbersome fixation and uneven pressure in traditional devices. Sensors between the inner and outer walls of the balloon directly collect the actual compression pressure, and combined with sampling and mechanical transmission adjustment, real-time pressure feedback and dynamic calibration are achieved. The surrounding positioning structure of the support and the central strap conforms to the limb contour, preventing device displacement and ensuring stable compression. At the same time, pressure threshold limitation, circulation reflux design, and emergency pause mechanism form multiple safety protections, reducing the risk of complications such as swelling and pain. It is also suitable for multiple puncture sites and patients of different body types, balancing medical efficiency and patient comfort.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the cardiovascular interventional limb care device according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the structural connection between the annulus and the pleural support as described in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the diversion tube, ball shell, handle, intermediate belt and motor described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the annular bladder, the middle bladder, and the motor according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the spherical shell structure described in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the spherical shell and the rotating handle according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the motor described in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the air cylinder according to an embodiment of the present invention; Figure 9 This is a schematic cross-sectional view of the annular capsule and central capsule as described in an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1-Ring belt, 101-Support bag, 102-Control airbag, 110-Diverter tube, 120-Spherical shell, 121-Connecting hole, 122-Upper hole, 130-Rotating handle, 131-Rotating column, 132-Rotating ball, 133-Through hole, 2-Middle belt, 201-Ring bag, 202-Middle bag, 203-Sensor, 3-Motor, 301-Fixed seat, 302-Screw, 310-Air cylinder, 311-Fixed platform, 312-Limiting plate, 313-Square rod, 314-Threaded hole, 315-Piston. Detailed Implementation

[0018] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0019] like Figures 1 to 9 As shown, this embodiment of the present disclosure provides a limb care device after cardiovascular intervention, including a positioning part, a compression part and a control part. The positioning part includes a support bag (101), and the support bag (101) is provided with a compression part. The compression part includes an annular bag (201) and a middle bag (202). The support bag (101) is provided with two sets of ventilation components. The first set of ventilation components is connected to the annular bag (201), and the second set of ventilation components is connected to the middle bag (202). The compression part is provided with a control part, and the control part includes two sets of control components. The first set of control components is connected to the annular bag (201), and the second set of control components is connected to the middle bag (202). The positioning part also includes a ring (1), which is fixedly connected to the outside of the support bag (101), and a control airbag (102) is fixedly connected to the support bag (101). Based on the cardiovascular interventional limb care device of this embodiment, the balloon (102) is controlled to perform initial rapid and synchronous inflation and fixation. The balloon (102) is controlled to inflate the support bag (101). The support bag (101) is connected to the ring bag (201) and the middle bag (202) through the ventilation component and inflated, so that it can be quickly stabilized on the limb at the pressure point and initially compress the pressure point. The compression part also includes a middle belt (2), which is fixedly connected to the upper side of the ring belt (1); The ventilation assembly includes a shunt tube (110), the first end of which is fixedly connected to the support bag (101), the second end of the shunt tube (110) of the first group of ventilation assemblies is fixedly connected to the ring bag (201), and the second end of the shunt tube (110) of the second group of ventilation assemblies is fixedly connected to the middle bag (202). A spherical shell (120) is fixedly connected in the middle of the diversion tube (110). A connecting hole (121) is opened on both sides of the spherical shell (120). The connecting hole (121) is connected to the diversion tube (110). An upper hole (122) is opened on the upper side of the spherical shell (120). A rotating column (131) is rotatably connected in the upper hole (122). A rotating handle (130) is fixedly connected on the upper side of the rotating column (131). A rotating ball (132) is fixedly connected in the spherical shell (120) to the rotating column (131). A through hole (133) is opened in the middle of the rotating ball (132). Based on the cardiovascular interventional limb care device of this embodiment, by controlling the handle (130), the through hole (133) is aligned with the connecting hole (121), or the through hole (133) is aligned with the position of the spherical shell (120) away from the connecting hole (121), thereby controlling the communication relationship between the support bag (101), the ring bag (201), and the middle bag (202); The control component includes a motor (3), a screw (302) at the drive end of the motor (3), a fixed seat (301) fixedly connected between the motor (3) and the middle belt (2), an air cylinder (310) at the screw (302) position of the middle belt (2), a fixed platform (311) fixedly connected between the air cylinder (310) and the middle belt (2), a square rod (313) on the screw (302), a threaded hole (314) on the square rod (313) for threaded connection with the screw (302), a limiting plate (312) on the side of the air cylinder (310) near the motor (3), the limiting plate (312) fixedly connected to the fixed platform (311), the limiting plate (312) and the square rod (313) for limiting cooperation, and a piston (315) fixedly connected inside the air cylinder (310). Sensors (203) are fixedly connected between the inner and outer walls of the middle capsule (202) and the annular capsule (201).

[0020] In some embodiments, a post-cardiovascular interventional limb care system includes: S1: Pressure acquisition feedback, the sensor (203) between the inner wall and outer wall of the middle bladder (202) and the ring bladder (201) collects the actual compression pressure of the two zones in real time at a frequency of 5-10Hz, and converts the pressure signal into an electrical signal and transmits it to the single-chip microcomputer carried on the motor (3) of the control unit. The sensor (203) is directly attached to the side of the airbag that contacts the limb to ensure that the collected data is the actual compression pressure and to avoid the air pressure deviation affecting the judgment; S2: Threshold comparison and judgment module, the control unit presets the core threshold and makes real-time judgment based on the sensor (203) data: The middle bladder (202) is judged as follows: the preset minimum threshold P1 and the safety upper limit threshold P2; if the collected pressure is < P1, it is judged that "inflation is required"; if it is > P2, it is judged that "pressure needs to be released"; if it is in the range of P1-P2, it is judged that "pressure is stable". Ring bladder (201) judgment: preset inflation target pressure P 辅充 Target pressure for venting P 辅放 The cycle time is T, including the pressure holding time T1 and the pressure decompression time T2; the cycle judgment is initiated only when the pressure of the plenum (202) is "stable": if P is not reached. 辅放 Then "inflate", inflate to P 辅放 If the pressure reaches T1, then "pressure needs to be released" and the pressure should be released to P. 辅充 If the holding time reaches T2, "refilling is required"; if the pressure of the middle sac (202) fluctuates, "circulation is paused"; Among them, the central capsule (202) has a higher priority than the annular capsule (201); P1 is 15 kPa; P2 is 25 kPa; P 辅充5 kPa; P 辅放 15 kPa; cycle time T is 30 seconds; holding time T1 is 20 seconds; decompression time T2 is 10 seconds.

[0021] S3: Control component execution; the control unit drives the corresponding control component to perform actions based on the judgment result. When the middle bladder (202) is inflated, the motor (3) of the second control unit rotates forward, driving the screw (302) to rotate. The square rod (313) pushes the piston (315) along the limit plate (312) to inflate the middle bladder (202) until the sensor (203) reports that the pressure reaches the P1-P2 range, and the motor (3) stops. When the pressure is depressurized, the motor (3) rotates in reverse, the piston (315) retracts, and the middle bladder (202) depressurizes to the threshold range. When the ring bladder (201) is activated: "Inflation required", the motor (3) of the first control unit rotates forward, and the piston (315) pushes the air inflated to P. 辅放 When the motor (3) stops to maintain pressure, and when pressure needs to be released, the motor (3) reverses and the piston (315) retracts to release pressure to P. 辅充 ; It is important to note that during the "pause cycle" operation, the motor (3) locks after completing its action. First, the "inflation required" command is executed, and the piston (315) is pushed forward to inflate to P. 辅放 Then, maintaining its current position, the annular sac (201) maintains the existing pressure.

[0022] S4: Dynamic closed-loop calibration: During the execution process, the sensor (203) continuously feeds back pressure data, and the control unit compares the threshold in real time: if the pressure meets the standard, the current state is maintained; if the pressure fluctuates, the "judgment" and "execution" steps of the priority middle bag (202) are repeated immediately until the pressure returns to the preset range; This allows the central balloon (202) to prioritize compression of the intervention point in case of an accident caused by pressure deviation due to limb movement, bleeding, etc., through the special action of "pausing circulation" in conjunction with the central balloon (202) to maintain compression while promoting peripheral blood flow.

[0023] A limb care device for post-cardiovascular interventional procedures. The core benefit of this technical solution lies in resolving the contradiction between hemostasis and ischemia prevention in post-operative care through targeted structural design and collaborative control logic, while simultaneously improving nursing efficiency, stability, and safety. It utilizes the functional zoning of the central balloon (202) in the puncture core area and the annular balloon (201) in the surrounding auxiliary area, coupled with a control logic prioritizing the central balloon (202) over the annular balloon (201). The central balloon (202) achieves precise pressure stabilization and hemostasis through a dual threshold of 15-25 kPa and mechanical transmission. The annular balloon (201) simulates a pump to promote reflux by inflating at 15 kPa and depressurizing at 5 kPa with a 30-second cycle. Furthermore, when the pressure of the central balloon (202) fluctuates, the annular balloon (201) immediately pauses circulation to maintain pressure, ensuring continuous hemostasis at the puncture site while avoiding ischemia and thrombosis caused by prolonged compression. Risks: The shunt tube (110) and rotating ball (132) of the ventilation component are switched to synchronous inflation and fixation and independent pressure control. In the early stage, the air bag (102) is controlled to achieve synchronous rapid positioning and initial compression. In the later stage, the airway is cut off to ensure that the dual-zone pressure control does not interfere with each other, solving the problems of cumbersome fixation and uneven pressure of traditional devices. The sensor (203) between the inner and outer walls of the air bag directly collects the real compression pressure. With the adjustment of sampling and mechanical transmission, the pressure feedback and dynamic calibration are realized in real time. The surrounding positioning structure of the support bag (101) and the middle belt (2) fits the limb contour to prevent the device from shifting and ensure stable compression. At the same time, the pressure threshold limit, circulation reflux design and emergency pause mechanism form multiple safety protections, reducing the risk of complications such as swelling and pain. It is also suitable for multiple puncture sites and patients of different body types, taking into account both medical and nursing efficiency and patient comfort.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A limb care device after cardiovascular interventional surgery, characterized in that: The device includes a positioning part, a compression part, and a control part. The positioning part includes a support bag, and the support bag is provided with a compression part. The compression part includes an annular bag and a central bag. The support bag is provided with two sets of ventilation components. The first set of ventilation components is connected to the annular bag, and the second set of ventilation components is connected to the central bag. The compression part is provided with a control part, and the control part includes two sets of control components. The first set of control components is connected to the annular bag, and the second set of control components is connected to the central bag.

2. The limb care device after cardiovascular interventional surgery as described in claim 1, characterized in that: The ring is fixedly connected to the outside of the support bag, and a control airbag is fixedly connected to the support bag.

3. The limb care device after cardiovascular intervention as described in claim 2, characterized in that: The compression part also includes a central belt, which is fixedly connected to the upper side of the ring belt; The ventilation assembly includes a shunt tube, the first end of which is fixedly connected to the support bag, the second end of the shunt tube of the first group of ventilation assemblies is fixedly connected to the ring bag, and the second end of the shunt tube of the second group of ventilation assemblies is fixedly connected to the middle bag. A spherical shell is fixedly connected in the middle of the shunt tube. The spherical shell has connecting holes on both sides, which are connected to the shunt tube. An upper hole is opened on the upper side of the spherical shell. A rotating column is rotatably connected in the upper hole. A rotating handle is fixedly connected to the upper side of the rotating column. A rotating ball is fixedly connected in the spherical shell. A through hole is opened in the middle of the rotating ball.

4. The limb care device after cardiovascular interventional surgery as described in claim 3, characterized in that: The control component includes a motor, a screw at the drive end of the motor, a fixed base fixedly connected between the motor and the central belt, an air cylinder at the screw position of the central belt, a fixed platform fixedly connected between the air cylinder and the central belt, a square rod on the screw, a threaded hole for threaded connection with the screw on the square rod, a limiting plate on the side of the air cylinder near the motor, the limiting plate fixedly connected to the fixed platform, the limiting plate and the square rod limitingly engaging, and a piston fixedly connected to the inside of the air cylinder on the square rod.

5. The limb care device after cardiovascular intervention as described in claim 4, characterized in that: Sensors are fixedly connected between the inner and outer walls of the middle capsule and the annular capsule on the lower side.

6. A post-cardiovascular interventional limb care system based on the post-cardiovascular interventional limb care device of claim 1, characterized in that: include: S1: Pressure acquisition and feedback, the sensor between the inner wall and the outer wall of the middle bladder and the lower side of the annular bladder, collects the actual compression pressure of the two zones in real time at a frequency of 5-10Hz, and converts the pressure signal into an electrical signal and transmits it to the single-chip microcomputer carried by the motor of the control unit. The sensor is directly attached to the side of the airbag that contacts the limb to ensure that the collected data is the actual compression pressure and to avoid the influence of airway pressure deviation on the judgment. S2: Threshold comparison and judgment module. The control unit presets the core threshold and makes real-time judgments based on sensor data. Inflation determination: preset minimum threshold P1, safety upper limit threshold P2; if the collected pressure < P1, determine "needs inflation"; if > P2, determine "needs depressurization"; if within the P1-P2 range, determine "pressure stable"; Circumferential pressure determination: Preset inflation target pressure P 辅充 Target pressure for venting P 辅放 The cycle time is T, including the pressure holding time T1 and the decompression time T2; the cycle is initiated only when the pressure in the pleural sac is "stable": if P is not reached... 辅放 Then "inflate", inflate to P 辅放 If the pressure reaches T1, then "pressure needs to be released" to P. 辅充 If the holding time reaches T2, "refilling is required"; if the pressure in the middle sac fluctuates, "pause the cycle"; Among them, the central capsule has a higher priority than the annular capsule; P1 is 15 kPa; P2 is 25 kPa; P 辅充 5 kPa; P 辅放 15 kPa; cycle time T is 30 seconds; holding time T1 is 20 seconds; decompression time T2 is 10 seconds; S3: Control component execution; the control unit drives the corresponding control component to perform actions based on the judgment result. When the middle bladder is inflated, the motor of the second control unit rotates forward, driving the screw to rotate. The square rod pushes the piston along the limit plate to inflate the middle bladder until the sensor feedback pressure reaches the P1-P2 range, at which point the motor stops. When the middle bladder is depressurized, the motor rotates in reverse, the piston retracts, and the middle bladder is depressurized to the threshold range. When the ring-shaped bladder is activated: "Inflation required," the motor of the first control unit rotates forward, and the piston propels the bladder to inflate to P. 辅放 When the motor stops to maintain pressure, and pressure needs to be released, the motor reverses and the piston retracts to release pressure to P. 辅充 ; It is important to note that during the "pause cycle" operation, the motor locks after completing its action. First, the "inflation required" command is executed, and the piston advances to inflate to P. 辅放 The ring sac then remains in its current position, maintaining the existing pressure. S4: Dynamic closed-loop calibration: During the execution process, the sensor continuously feeds back pressure data, and the control unit compares the data with the threshold in real time. If the pressure meets the standard, the current state is maintained; if the pressure fluctuates, the "judgment" and "execution" steps of the priority bladder are repeated immediately until the pressure returns to the preset range.

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