Lung bullae volume reduction system and its control methods

Abstract

This invention provides a lung bulla volume reduction system and its control method. The piston inside the syringe is fixedly connected to the plunger. The second end of the suction line is connected to the connector at the front end of the syringe. The first end of the suction line is connected to the outlet end of a first one-way valve and the second end of an exhaust line, respectively. The first end of the exhaust line is connected to the inlet end of a second one-way valve. The second end of an extension tube is connected to a pressure detection module and the inlet end of the first one-way valve, respectively. The first end of the extension tube is connected to a puncture needle. The suction subsystem is connected to a CT scanner, a pressure detection module, and the second end of the plunger. The suction subsystem can control the movement state of the plunger based on preset information, CT image data acquired by the CT scanner, the force sensor detecting the force on the plunger, and the pressure data detected by the pressure detection module. This reduces the operational difficulty of lung bulla volume reduction and helps ensure the timeliness of lung bulla volume reduction, the accuracy of volume reduction control, and the standardization of surgery.

Description

Technical Field

[0001] This invention relates to the field of medical materials technology, and in particular to a lung bulla volume reduction system and its control method. Background Technology

[0002] Pulmonary bullae are a common complication of chronic obstructive pulmonary disease. Due to partial obstruction of the draining bronchus, the alveoli have difficulty expelling gas. Over time, the alveolar elasticity weakens, and the alveoli rupture to form pulmonary bullae. Usually, the pulmonary bullae gradually increase in size and compress the surrounding normal alveoli, which can easily cause breathing difficulties in patients. If a pulmonary bulla ruptures, it can form tension pneumothorax, which can endanger the patient's life at any time.

[0003] Currently, the main treatment for pulmonary bullae is pulmonary bullae puncture and drainage. The procedure involves inserting a syringe needle through the skin into the bullae, connecting an external syringe, and continuously aspirating air to reduce the size of the bullae. However, when using a regular syringe to aspirate air, medical staff need to manually press down the extension tube between the syringe and the needle to prevent external air from entering the lungs. This method is labor-intensive, inefficient, and affects the timeliness of reducing the volume of the pulmonary bullae. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a lung bullae volume reduction system and its control method to alleviate the above-mentioned problems existing in the related art.

[0005] In a first aspect, embodiments of the present invention provide a lung bulla volume reduction system, comprising: a syringe, a plunger, an aspiration tubing, an exhaust tubing, a puncture needle, an extension tube, an airflow control and detection module, a CT scanner, and an aspiration subsystem; a piston inside the syringe is fixedly connected to a first end of the plunger, and a second end of the plunger is outside the syringe barrel; the airflow control and detection module includes a pressure detection module, a first one-way valve, and a second one-way valve; the second end of the aspiration tubing is connected to a connector at the front end of the syringe, and the first end of the aspiration tubing is connected to the outlet end of the first one-way valve and the second end of the exhaust tubing, respectively; the second end of the exhaust tubing is connected to a connector at the front end of the syringe, and the first end of the aspiration tubing is connected to the outlet end of the first one-way valve and the second end of the exhaust tubing, respectively. One end of the extension tube is connected to the inlet end of the second one-way valve, and the second end of the extension tube is connected to the inlet end of the air pressure detection module and the first one-way valve, respectively. The first end of the extension tube is connected to the puncture needle. The CT device is used to acquire CT image data of pulmonary bullae. The suction subsystem includes a force sensor for detecting the force on the push handle. The suction subsystem is connected to the CT device, the air pressure detection module and the second end of the push handle, respectively, and is used to control the movement state of the push handle based on preset information, the CT image data acquired by the CT device, the force on the push handle and the air pressure data detected by the air pressure detection module.

[0006] Secondly, embodiments of the present invention also provide a control method for the pulmonary bullae volume reduction system described in the first aspect above, comprising: the force sensor detecting the force on the push handle; the air pressure detection module detecting air pressure; the CT device acquiring CT image data of the pulmonary bullae; and the air extraction subsystem controlling the movement state of the push handle based on preset information, the CT image data acquired by the CT device, the force on the push handle, and the air pressure data detected by the air pressure detection module.

[0007] This invention provides a lung bulla volume reduction system and its control method. The piston inside the syringe is fixedly connected to the first end of the plunger, and the second end of the plunger is outside the syringe barrel. The second end of the suction line is connected to the connector at the front end of the syringe. The first end of the suction line is connected to the outlet end of a first one-way valve and the second end of an exhaust line, respectively. The first end of the exhaust line is connected to the inlet end of a second one-way valve. The second end of an extension tube is connected to a pressure detection module and the inlet end of the first one-way valve, respectively. The first end of the extension tube is connected to a puncture needle. The suction subsystem is connected to the pressure detection module and the second end of the plunger. The suction subsystem can control the movement state of the plunger based on preset information, CT image data acquired by a CT device, the force on the plunger detected by a force sensor, and the pressure data detected by the pressure detection module. Using the above technology, the movement of the push handle can be automatically controlled by CT image data collected by CT equipment, the force on the push handle and the air pressure in the pipeline, so as to realize the automated control of suction and exhaust. Compared with pulmonary bullae puncture and drainage, it saves manual steps, reduces labor costs, improves work efficiency, reduces the difficulty of pulmonary bullae volume reduction operation, and helps to ensure the timeliness of pulmonary bullae volume reduction, the accuracy of volume reduction control and the standardization of surgery.

[0008] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0009] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a lung bullae volume reduction system according to an embodiment of the present invention;

[0012] Figure 2 This is a three-dimensional view of the main structure of the pulmonary bullae volume reduction system in an embodiment of the present invention;

[0013] Figure 3 This is a three-dimensional view of a partial structure of the pulmonary bullae volume reduction system in an embodiment of the present invention;

[0014] Figure 4 This is a flowchart of the core functional modules of a portion of the algorithm in the lung bullae volume reduction system of this invention.

[0015] Figure 5 This is a flowchart of the core functional module of another part of the algorithm of the lung bullae volume reduction system in this embodiment of the invention;

[0016] Figure 6 This is a flowchart illustrating the overall workflow of the lung bullae volume reduction system in this embodiment of the invention.

[0017] Figure 7 This is a schematic flowchart of a control method for a pulmonary bullae volume reduction system according to an embodiment of the present invention.

[0018] Icons: 100-Air extraction subsystem; 10-Air pressure sensor; 11-Air pressure detection module; 121-First three-way valve; 122-Second three-way valve; 13-Exhaust pipe; 14-First connecting pipe; 15-Second connecting pipe; 16-Force sensor; 17-Clamping device; 1-Push handle; 2-Injector; 3-Air extraction pipe; 4-Airflow control and detection module; 5-Extension tube; 6-Punch needle; 7-Upper cover; 8-Lower cover; 91-First one-way valve; 92-Second one-way valve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Currently, the main treatment for pulmonary bullae is pulmonary bullae aspiration and drainage. This procedure involves inserting a syringe needle through the skin into the bullae, connecting it to an external syringe, and continuously aspirating air to reduce the bullae's size. However, with conventional syringes, medical staff need to manually press down the extension tube between the syringe and the needle to prevent external air from entering the lungs during the aspiration and venting process. This method is labor-intensive, inefficient, and affects the timeliness of bullae volume reduction. Therefore, this invention provides a bullae volume reduction system and its control method, which can alleviate the aforementioned problems in related technologies.

[0021] To facilitate understanding of this embodiment, a detailed description of the lung bullae volume reduction system disclosed in this embodiment of the invention will be provided first, see [link to relevant documentation]. Figure 1 As shown, the system may include: syringe 2, push handle 1, suction line 3, exhaust line 13, puncture needle 6, extension tube 5, airflow control and detection module 4, CT equipment, and suction subsystem 100.

[0022] The piston inside syringe 2 is fixedly connected to the first end of the push handle 1, and the second end of the push handle 1 is outside the barrel of syringe 2.

[0023] The airflow control and detection module 4 may include a pressure detection module 11, a first one-way valve 91, and a second one-way valve 92; the second end of the suction line 3 is connected to the connector at the front end of the syringe 2, the first end of the suction line 3 is connected to the outlet end of the first one-way valve 91 and the second end of the exhaust line 13, the first end of the exhaust line 13 is connected to the inlet end of the second one-way valve 92, the second end of the extension tube 5 is connected to the pressure detection module 11 and the inlet end of the first one-way valve 91, and the first end of the extension tube 5 is connected to the puncture needle 6.

[0024] The CT device is used to acquire CT image data of pulmonary bullae; the suction subsystem 100 may include a force sensor 16 for detecting the force on the push handle 1; the suction subsystem 100 is connected to the CT device, the air pressure detection module 11 and the second end of the push handle 1 respectively, and is used to control the movement state of the push handle 1 based on preset information, the CT image data acquired by the CT device, the force on the push handle 1 and the air pressure data detected by the air pressure detection module 11.

[0025] The lung bullae volume reduction system provided in this invention can automatically control the movement of the push handle using CT image data acquired by CT equipment, the force on the push handle, and the air pressure in the tubing, thereby achieving automated control of suction and exhaust. Compared with lung bullae puncture and drainage, it eliminates manual steps, reduces labor costs, improves work efficiency, reduces the operational difficulty of lung bullae volume reduction, and helps to ensure the timeliness of lung bullae volume reduction, the accuracy of volume reduction control, and the standardization of surgery.

[0026] As one possible implementation method, see Figures 1 to 3As shown, the airflow control and detection module 4 may further include a first three-way valve 121 and a first connecting pipe 14; the air pressure detection module 11 may include an air pressure sensor 10 connected to the pumping subsystem 100 for detecting the air pressure in the extension pipe 5; the air pressure detection module 11 is used to send the air pressure data detected by the air pressure sensor 10 to the pumping subsystem 100; the first end of the first three-way valve 121 is connected to the second end of the extension pipe 5, the second end of the first three-way valve 121 is connected to the air pressure sensor 10, the third end of the first three-way valve 121 is connected to the first end of the first connecting pipe 14, and the second end of the first connecting pipe 14 is connected to the inlet end of the first one-way valve 91. This design further improves the stability of the airflow control and detection module 4 during installation and air pressure detection.

[0027] As one possible implementation method, see Figures 1 to 3 As shown, the airflow control and detection module 4 may further include a second connecting pipe 15 and a second three-way valve 122; the first end of the second connecting pipe 15 is connected to the outlet end of the first one-way valve 91, the second end of the second connecting pipe 15 is connected to the first end of the second three-way valve 122, the second end of the second three-way valve 122 is connected to the second end of the exhaust pipe 13, and the third end of the second three-way valve 122 is connected to the first end of the suction pipe 3. By setting the second connecting pipe 15 and the second three-way valve 122, the installation stability of the airflow control and detection module 4 is further improved.

[0028] As one possible implementation method, see Figures 1 to 3 As shown, the airflow control and detection module 4 may also include an upper cover 7 and a lower cover 8; the upper cover 7 and the lower cover 8 are connected to form a housing, and the air pressure detection module 11, the first one-way valve 91, the second one-way valve 92, the first three-way valve 121, the first connecting pipe 14, the second connecting pipe 15, and the second three-way valve 122 are all located inside the housing. By connecting the upper cover 7 and the lower cover 8 to form a housing, the air pressure detection module 11, the first one-way valve 91, the second one-way valve 92, the first three-way valve 121, the first connecting pipe 14, the second connecting pipe 15, and the second three-way valve 122 can be protected, further preventing damage to related components.

[0029] As one possible implementation method, see Figures 1 to 3 As shown, the preset information may include the air extraction speed; the air extraction subsystem 100 may also be used to: determine the air extraction volume based on the CT image data acquired by the CT device, and control the push handle 1 to move along the cylinder axis to perform air extraction according to the air extraction volume and air extraction speed; determine the air extraction state based on the air extraction volume, the force on the push handle 1 and the air pressure data detected by the air pressure detection module 11, and adjust the movement state of the push handle 1 based on the air extraction state.

[0030] For example, during the air extraction process, the air extraction subsystem 100 can determine whether the air extraction is complete based on preset information, the air extraction volume, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11; if the air extraction is complete, the air extraction subsystem 100 controls the push handle 1 to stop moving to stop the air extraction.

[0031] In practical applications, the suction subsystem 100 can be used to calculate the suction volume and set the suction speed, and control the start and stop of the suction action (i.e., the push handle 1 moves along the cylinder axis). Specifically, the CT equipment acquires CT image data of the pulmonary bullae and sends it to the suction subsystem 100. The suction subsystem 100 calculates the volume of the pulmonary bullae based on the received CT image data and uses this volume or 0.8 times it (or the amount determined after doctor's assessment) as the suction volume. Relevant personnel (such as medical staff) can input the suction speed into the suction subsystem 100, and then the suction subsystem 100 is started to automatically begin suction (i.e., controlling the push handle 1 to move along the cylinder axis according to the calculated suction volume and the input suction speed). During the process, the air extraction subsystem 100 receives CT image data transmitted from the CT equipment, air pressure values ​​transmitted from the air pressure detection module 11, and force values ​​transmitted from the force sensor 16 in real time, and determines whether the air extraction is in normal condition. If the received air pressure value and / or force value is abnormal, an alarm is triggered and the current air extraction is automatically stopped (i.e., the push handle 1 is controlled to stop moving along the cylinder axis). Alternatively, if the air extraction is determined to be completed based on the air extraction volume and the received air pressure and force values, an alarm is triggered and the current air extraction is automatically stopped.

[0032] As one possible implementation method, see Figures 1 to 3 As shown, the air extraction subsystem 100 can also be used to: trigger a first alarm when the air extraction status is abnormal, and / or trigger a second alarm when the air extraction is completed.

[0033] In practical applications, the suction subsystem 100 can be used to detect whether the suction is smooth. Specifically, when the suction subsystem 100 detects that the suction volume has been completely removed, it can determine that the suction is complete and trigger a suction completion alarm, stopping further suction. When the suction subsystem 100 detects that the air pressure value transmitted from the air pressure detection module 11 shows a continuous increase in negative pressure or detects that the force value transmitted from the force sensor 16 shows a sudden increase in tension, it can determine that the intrapulmonary pressure is too low (which may lead to over-suction) and trigger an abnormal alarm. When the suction subsystem 100 detects that the air pressure value transmitted from the air pressure detection module 11 and / or the force value transmitted from the force sensor 16 meet preset conditions, it can determine that the suction is complete and trigger a suction completion alarm, stopping further suction to avoid damage to the lungs caused by over-suction.

[0034] As one possible implementation method, see Figures 1 to 3 As shown, the preset information may also include a preset negative pressure range under normal physiological conditions; the suction subsystem 100 may also be used to: during the suction process, establish a respiratory rhythm model based on the air pressure data detected by the air pressure detection module 11 in the first preset time period, and perform trend analysis on the air pressure data detected by the air pressure detection module 11 in the second preset time period, then match the trend analysis results with the respiratory rhythm model, and determine whether suction is complete based on the negative pressure range and the matching results; wherein, the end time of the first preset time period is before the start time of the second preset time period.

[0035] In practical applications, the suction subsystem 100 can determine that suction is complete when it detects that the air pressure value transmitted from the air pressure detection module 11 exceeds the negative pressure range threshold of normal physiological state due to respiratory fluctuations over a period of time. (See also...) Figure 4 As shown, the core functional module principle of the algorithm for determining whether air aspiration has been completed in the lung bullae volume reduction system is as follows:

[0036] a) Data acquisition and processing module, used for: establishing communication between the pressure sensor 10 and the pumping subsystem 100 via Bluetooth interface, sampling the raw pressure data collected by the pressure sensor 10 according to a preset sampling frequency, filtering the sampled raw pressure data to obtain filtered pressure data, removing irrelevant signals such as environmental interference and sensor noise, and then sending the filtered pressure data with irrelevant signals removed to the pumping subsystem 100.

[0037] b) Respiratory fluctuation analysis module, used for: the suction subsystem 100 to extract respiratory fluctuation characteristics (such as fluctuation period, fluctuation amplitude, peak / trough distribution) of the air pressure filtered data received during a period of time during the patient's breathing process to establish the patient's respiratory rhythm model, and then to perform trend analysis on the air pressure filtered data received during another period of time during the patient's breathing process (later than the period corresponding to the establishment of the respiratory rhythm model) through a trend analysis algorithm (such as collecting representative values ​​of respiratory period, amplitude and other data from multi-cycle respiratory data, and combining the obtained representative values ​​with the air pressure filtered data to determine whether the air pressure fluctuation is synchronized with the respiratory rhythm or whether the air pressure fluctuation shows a stable periodic change);

[0038] c) Threshold judgment module, used to: preset the negative pressure range threshold under normal physiological conditions for the suction subsystem 100 (generally configured according to medical standards, but can be freely set by the user if necessary). The suction subsystem 100 compares the preset negative pressure range threshold with the patient's respiratory rhythm model (such as peak value, trough value, fluctuation range, period, etc.) in the respiratory fluctuation analysis module to determine whether the patient's respiratory fluctuation exceeds the normal physiological range (i.e., whether the data in the patient's respiratory rhythm model exceeds the preset negative pressure range threshold).

[0039] d) Result output module, used for: after passing the threshold judgment module, if the suction subsystem 100 determines that the current patient's respiratory fluctuation has exceeded the normal physiological state range (i.e., the data in the current patient's respiratory rhythm model exceeds the preset negative pressure range threshold), then the suction is considered complete and the suction subsystem 100 stops the suction action.

[0040] As one possible implementation method, see Figures 1 to 3 As shown, the preset information may also include a set value and an initial baseline and an initial fluctuation threshold determined in advance based on the force sensor 16 detecting the force on the push handle 1 during the third preset time period, and the cylinder is free of liquid during the third preset time period; the pumping subsystem 100 may also be used to: determine whether pumping is complete during the pumping process based on the force sensor 16 detecting the force on the push handle 1 during the fourth preset time period, as well as the set value, the initial baseline and the initial fluctuation threshold; wherein, the end time of the third preset time period is before the start time of the fourth preset time period.

[0041] In practical applications, the pumping subsystem 100 can determine that pumping is complete when it detects that the force value (such as the tensile force value) transmitted from the force sensor 16 has exceeded a certain range over a period of time (determined based on a set value, initial baseline, and initial fluctuation threshold). See also... Figure 5 As shown, the principle of another core functional module of the algorithm for determining whether air aspiration has been completed in the lung bullae volume reduction system is as follows:

[0042] A) Data acquisition and processing module, used for: the pumping subsystem 100 to sample the raw tension data collected by the force sensor 16 through the MCU using AD sampling (or other sampling methods), and then to filter the sampled raw tension data to obtain filtered tension data, and to remove irrelevant signals such as environmental interference and sensor noise;

[0043] B) Baseline calibration module, used to: calibrate the tension baseline of the suction cylinder (i.e., the cylinder of syringe 2) during the commissioning of the lung bullous volume reduction system, that is, to collect tension filtering data for a preset time when there is no liquid in the suction cylinder and calculate the mean as the initial baseline and the maximum fluctuation value as the initial fluctuation threshold.

[0044] C) Baseline status determination module, used to: during the actual operation of the lung bullae volume reduction system, the suction subsystem 100 compares the initial baseline with the tension filtering data received within a certain period of time in real time, and makes the following two judgments: (1) Determine whether the tension filtering data exceeds (2) Determine whether there are abnormal fluctuations in the tensile filtering data within a continuous preset time period (e.g., determine whether there are sudden jumps in the tensile value within a continuous preset time period).

[0045] D) Result output module, used to: after passing through the baseline state determination module, if the tension filtering data received by the pumping subsystem 100 meets the corresponding requirements (i.e., the tension filtering data exceeds the limit) If there are abnormal fluctuations within the range and / or within a continuously preset time period, the pumping is considered complete, and the pumping subsystem 100 stops the pumping operation.

[0046] As one possible implementation method, see Figures 1 to 5 As shown, the pumping subsystem 100 can also be used to visualize the pumping status, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11.

[0047] In practical applications, the evacuation subsystem 100 can handle the evacuation process (such as...). Figure 4 , Figure 5 The algorithm flow shown is visualized, along with the current aspiration status (such as aspiration in progress, aspiration completed, etc.), intrapulmonary pressure (such as the pressure data detected by the pressure detection module 11) and syringe pull force (such as the force on the push handle 1 detected by the force sensor 16). This allows medical staff to view relevant status information (such as the current aspiration status, intrapulmonary pressure, syringe pull force, etc.) in a timely manner, thus facilitating timely intervention in case of abnormalities.

[0048] For ease of understanding, the structure and working principle of the above-mentioned pulmonary bullae volume reduction system are described below using a specific application as an example.

[0049] See Figures 1 to 3As shown, the structure of the pulmonary bullae volume reduction system may include: a syringe 2, a plunger 1, an aspiration tubing 3, an exhaust tubing 13, a puncture needle 6, an extension tube 5, an airflow control and detection module 4, a CT scanner, and an aspiration subsystem 100; the piston inside the syringe 2 is fixedly connected to the first end of the plunger 1, and the second end of the plunger 1 is outside the syringe 2 barrel; the airflow control and detection module 4 includes a pressure detection module 11, a first one-way valve 91 and a second one-way valve 92, a first three-way valve 121, a first connecting tube 14, and a second connecting tube 15. The system includes a connecting pipe 15, a second three-way valve 122, an upper cover 7, and a lower cover 8. The air pressure detection module 11 includes an air pressure sensor 10 and its peripheral circuitry. The second end of the suction pipe 3 is connected to the connector at the front end of the syringe 2. The first end of the suction pipe 3 is connected to the third end of the second three-way valve 122. The first end of the second three-way valve 122 is connected to the second end of the second connecting pipe 15. The second end of the second three-way valve 122 is connected to the second end of the exhaust pipe 13. The first end of the exhaust pipe 13 is connected to the inlet end of the second one-way valve 92. The first end of the connecting pipe 15 is connected to the outlet end of the first one-way valve 91, the inlet end of the first one-way valve 91 is connected to the second end of the first connecting pipe 14, the first end of the first connecting pipe 14 is connected to the third end of the first three-way valve 121, the first end of the first three-way valve 121 is connected to the second end of the extension pipe 5, the second end of the first three-way valve 121 is connected to the air pressure sensor 10, and the second end of the extension pipe 5 is connected to the first end of the puncture needle 6; the upper cover 7 and the lower cover 8 are connected to form a housing, and the air pressure detection module 11, the first One-way valve 91, second one-way valve 92, first three-way valve 121, first connecting pipe 14, second connecting pipe 15, and second three-way valve 122 are all located inside the housing; the air extraction subsystem 100 includes a clamping device 17 and a force sensor 16, with the force sensor 16 mounted on the clamping device 17; the clamping device 17 is fixedly connected to the second end of the push handle 1, and the air extraction subsystem 100 can drive the clamping device 17 to move the push handle 1 along the cylinder axis; the air extraction subsystem 100 is connected to the CT equipment and the air pressure sensor 10 respectively;

[0050] Among them, syringe 2 can be used as a gas storage device, push handle 1 can be replaced by a manual or automatic pushing device, CT equipment can be used to acquire CT image data of pulmonary bullae, force sensor 16 can be used to detect the force on push handle 1 during aspiration, puncture needle can be used to puncture into pulmonary bullae to provide a channel for gas, and aspiration tubing 3 can be used to provide a channel for gas to be drawn from the lungs into syringe 2; airflow control and detection module 4 can be composed of air pressure detection module 11 (including air pressure sensor 10 and its peripheral circuit), three-way valve (including first three-way valve 121 and second three-way valve 122), one-way valve (including first one-way valve 91 and second one-way valve 92) and related tubing (including exhaust tubing 13, first connecting pipe 14, second connecting pipe 92, and second connecting pipe 92). The module integrated in the connecting pipe 15 is used to effectively control the flow direction of the suction and exhaust through one-way valves (the first one-way valve 91 allows gas to be drawn into the syringe 2 from the lungs and the second one-way valve 92 allows gas to be discharged from the syringe 2, which is the key to achieving automatic suction) and related pipelines. The air pressure detection module 11 detects the air pressure in the pipeline (which can indirectly reflect the air pressure in the lungs) and sends the detection result to the suction subsystem 100. When the air pressure exceeds the preset range threshold (i.e., the negative pressure range threshold of the normal physiological state), the suction subsystem 100 can automatically control the suction action to stop to ensure the safety of the suction process. The force sensor 16 installed on the push handle 1 can detect the force on the push handle 1 and send the detection result to the suction subsystem 100.

[0051] The suction subsystem 100 can be used to: calculate the suction volume based on CT images acquired by the CT equipment, set the suction speed, and thus control the start and stop of the suction action (i.e., the movement of the push handle 1 along the cylinder axis); detect whether the suction is smooth; if it is determined that the intrapulmonary pressure is too low (which may lead to over-suction), trigger an abnormal alarm and control the push handle 1 to stop moving to stop suction; and when it is detected that the air pressure value transmitted from the air pressure detection module 11 exceeds the negative pressure range of the normal physiological state and / or has abnormal fluctuations with respiration over a period of time, and / Or, when the pulling force value transmitted from the force sensor 16 within this period exceeds a certain range (determined by combining the set value, the initial baseline and the initial fluctuation threshold), the pumping is determined to be complete; if the pumping is complete, the pumping subsystem 100 triggers a pumping completion alarm and controls the push handle 1 to stop moving to stop pumping; the pumping subsystem 100 also determines the pumping state based on the pumping volume, the force on the push handle 1 and the air pressure data detected by the air pressure detection module 11, and adjusts the movement state of the push handle 1 based on the pumping state.

[0052] See Figures 1 to 3 and Figure 6 As shown, the overall workflow of the lung bullae volume reduction system is as follows:

[0053] Step S1: Power on the air extraction subsystem 100, initialize the Bluetooth interface and force sensor 16, power on the air pressure detection module 11, and initialize the Bluetooth interface in the air pressure detection module 11 that is connected to the air extraction subsystem 100.

[0054] In step S2, the pressure sensor 10 establishes communication with the pumping subsystem 100 via a Bluetooth interface;

[0055] Step S3: The pumping subsystem 100 collects raw tension data through the force sensor 16, and obtains filtered tension data by sampling, filtering and removing irrelevant signals from the raw tension data.

[0056] Step S4: The pressure sensor 10 starts to collect raw pressure data. After sampling, filtering and removing irrelevant signals from the raw pressure data, the filtered pressure data is obtained and sent to the pumping subsystem 100 via Bluetooth.

[0057] Step S5: The air extraction subsystem 100 determines whether the air pressure filtering data exceeds the negative pressure range under normal physiological conditions.

[0058] Step S6: If the air extraction subsystem 100 determines that the air pressure filtering data exceeds the negative pressure range under normal physiological conditions, then the air extraction is considered complete and the air extraction subsystem 100 stops the air extraction action.

[0059] Step S7: If the extraction subsystem 100 determines that the air pressure filtering data is within the negative pressure range under normal physiological conditions, the extraction subsystem 100 further determines whether the tension filtering data meets the corresponding requirements (determining whether the tension filtering data exceeds...). (Abnormal fluctuations within the range and / or within a continuously preset time period);

[0060] Step S8: If the pumping subsystem 100 determines that the tension filtering data meets the corresponding requirements (i.e., the tension filtering data exceeds the limit) If there are abnormal fluctuations within the range and / or within a continuous preset time, the pumping is considered complete and the pumping subsystem 100 stops the pumping action.

[0061] Step S9, if the pumping subsystem 100 determines that the tension filtering data does not meet the corresponding requirements (i.e., the tension filtering data is in a certain state) If the range is within the specified range and there are no abnormal fluctuations within a continuously preset time period, then return to step S5.

[0062] Using the above-mentioned pulmonary bullae volume reduction system, medical staff only need to input the suction speed and suction volume into the suction subsystem 100 to achieve automatic suction and degassing of pulmonary bullae. Compared with the traditional pulmonary bullae puncture and drainage procedure, it saves a lot of manual steps, greatly reduces the difficulty of pulmonary bullae volume reduction operation, and improves the efficiency and accuracy of pulmonary bullae volume reduction.

[0063] This invention also provides a control method for the above-mentioned pulmonary bullae volume reduction system, see [link to relevant documentation]. Figure 1 and Figure 7 As shown, the method may include the following steps:

[0064] Step S702, the force sensor 16 detects the force on the push handle 1;

[0065] Step S704, the air pressure detection module 11 detects the air pressure;

[0066] Step S706: The CT device acquires CT image data of pulmonary bullae;

[0067] In step S708, the air extraction subsystem 100 controls the movement state of the push handle 1 based on preset information, CT image data acquired by the CT device, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11.

[0068] The control method of the above-mentioned pulmonary bullae volume reduction system can automatically control the movement of the push handle by utilizing the force on the push handle and the air pressure in the tubing, thereby achieving automated control of suction and exhaust. Compared with the traditional pulmonary bullae puncture and drainage, it eliminates manual steps, reduces labor costs, improves work efficiency, reduces the operational difficulty of pulmonary bullae volume reduction, and helps to ensure the timeliness of pulmonary bullae volume reduction, the accuracy of volume reduction control, and the standardization of surgery.

[0069] See Figure 1 and Figure 7 As shown, the preset information may include the air extraction speed; based on this, the above step S708 (i.e., the air extraction subsystem 100 controls the movement state of the push handle 1 based on the preset information, the CT image data collected by the CT device, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11) may include the air extraction subsystem 100 performing the following operations: determining the air extraction volume based on the CT image data collected by the CT device, and controlling the push handle 1 to move along the cylinder axis according to the air extraction volume and the air extraction speed to perform air extraction; determining the air extraction state based on the air extraction volume, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11, and adjusting the movement state of the push handle 1 based on the air extraction state.

[0070] See Figure 1 and Figure 7As shown, step S708 (i.e., the air extraction subsystem 100 controls the movement state of the push handle 1 based on preset information, CT image data acquired by the CT device, force on the push handle 1, and air pressure data detected by the air pressure detection module 11) may include the air extraction subsystem 100 performing the following operations: during the air extraction process, determining whether air extraction is complete based on the preset information, the air extraction volume, force on the push handle 1, and air pressure data detected by the air pressure detection module 11; if air extraction is complete, controlling the push handle 1 to stop moving to stop air extraction.

[0071] See Figure 1 and Figure 7 As shown, the preset information may also include a preset negative pressure range under normal physiological conditions. Based on this, the operation performed by the suction subsystem 100 to determine whether suction is complete during the suction process, based on the preset information, the suction volume, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11, may include: during the suction process, establishing a respiratory rhythm model based on the air pressure data detected by the air pressure detection module 11 within a first preset time period, performing trend analysis on the air pressure data detected by the air pressure detection module 11 within a second preset time period, then matching the trend analysis results with the respiratory rhythm model, and determining whether suction is complete based on the negative pressure range and the matching results; wherein, the end time of the first preset time period is before the start time of the second preset time period.

[0072] See Figure 1 and Figure 7 As shown, the preset information may also include a set value and an initial baseline and an initial fluctuation threshold determined in advance based on the force sensor 16 detecting the force on the push handle 1 within a third preset time period. The cylinder interior does not contain liquid during the third preset time period. Based on this, the operation performed by the pumping subsystem 100 to determine whether pumping is complete during the pumping process based on the preset information, the pumping volume, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11 may include: during the pumping process, determining whether pumping is complete based on the force sensor 16 detecting the force on the push handle 1 within a fourth preset time period, the set value, the initial baseline, and the initial fluctuation threshold; wherein the end time of the third preset time period is before the start time of the fourth preset time period.

[0073] See Figure 1 and Figure 7 As shown, the above control method may further include: the air extraction subsystem 100 performing a first alarm when the air extraction state is abnormal, and / or, the air extraction subsystem 100 performing a second alarm when air extraction is completed.

[0074] See Figure 1 and Figure 7 As shown, the above control method may further include: the air extraction subsystem 100 visualizes the air extraction state, the force on the push handle 1, and the air pressure data detected by the air pressure detection module 11.

[0075] The control method provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned lung bulla volume reduction system embodiment. For the sake of brevity, any parts not mentioned in the control method embodiment can be referred to the corresponding content in the aforementioned lung bulla volume reduction system embodiment.

[0076] Unless otherwise specifically stated, the relative steps, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0077] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0078] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A lung bullae volume reduction system, characterized in that, include: Syringe, plunger, suction tubing, exhaust tubing, puncture needle, extension tubing, airflow control and detection module, CT equipment, and suction subsystem; The piston inside the syringe is fixedly connected to the first end of the push handle, and the second end of the push handle is outside the syringe barrel. The airflow control and detection module includes a pressure detection module, a first one-way valve, and a second one-way valve; the second end of the suction line is connected to the connector at the front end of the syringe, the first end of the suction line is connected to the outlet end of the first one-way valve and the second end of the exhaust line, the first end of the exhaust line is connected to the inlet end of the second one-way valve, the second end of the extension tube is connected to the pressure detection module and the inlet end of the first one-way valve, and the first end of the extension tube is connected to the puncture needle. The CT device is used to acquire CT image data of pulmonary bullae; the suction subsystem includes a force sensor for detecting the force on the push handle; The air extraction subsystem is connected to the CT device, the air pressure detection module, and the second end of the push handle, respectively, and is used to control the movement state of the push handle based on preset information, CT image data acquired by the CT device, the force on the push handle, and the air pressure data detected by the air pressure detection module; wherein, the force on the push handle is a tensile force; The preset information includes the air extraction speed; the air extraction subsystem is also used to: determine the air extraction volume based on the CT image data acquired by the CT device, and control the push handle to move along the cylinder axis according to the air extraction volume and the air extraction speed to perform air extraction; determine the air extraction state based on the air extraction volume, the force on the push handle and the air pressure data detected by the air pressure detection module, and adjust the movement state of the push handle based on the air extraction state.

2. The lung bullae volume reduction system according to claim 1, characterized in that, The airflow control and detection module also includes a first three-way valve and a first connecting pipe; the air pressure detection module includes an air pressure sensor connected to the air extraction subsystem for detecting the air pressure in the extension pipe; The air pressure detection module is used to send the air pressure data detected by the air pressure sensor to the air extraction subsystem; the first end of the first three-way valve is connected to the first end of the extension tube, the second end of the first three-way valve is connected to the air pressure sensor, the third end of the first three-way valve is connected to the first end of the first connecting tube, and the second end of the first connecting tube is connected to the inlet end of the first one-way valve.

3. The lung bullae volume reduction system according to claim 2, characterized in that, The airflow control and detection module also includes a second connecting pipe and a second three-way valve; the first end of the second connecting pipe is connected to the outlet end of the first one-way valve, the second end of the second connecting pipe is connected to the first end of the second three-way valve, the second end of the second three-way valve is connected to the second end of the exhaust pipe, and the third end of the second three-way valve is connected to the first end of the extraction pipe.

4. The lung bullae volume reduction system according to claim 3, characterized in that, The airflow control and detection module also includes an upper cover and a lower cover; the upper cover and the lower cover are connected to form a housing, and the air pressure detection module, the first one-way valve, the second one-way valve, the first three-way valve, the first connecting pipe, the second connecting pipe and the second three-way valve are all located inside the housing.

5. The lung bullae volume reduction system according to claim 1, characterized in that, The air extraction subsystem is also used to: determine whether air extraction is complete during the air extraction process based on the preset information, the air extraction volume, the force on the push handle, and the air pressure data detected by the air pressure detection module. If the pumping is complete, control the push handle to stop moving to stop the pumping.

6. The pulmonary bullae volume reduction system according to claim 5, characterized in that, The preset information also includes a preset negative pressure range under normal physiological conditions; the suction subsystem is further configured to: during the suction process, establish a respiratory rhythm model based on the air pressure data detected by the air pressure detection module within a first preset time period, perform trend analysis on the air pressure data detected by the air pressure detection module within a second preset time period, then match the trend analysis results with the respiratory rhythm model, and determine whether suction is complete based on the negative pressure range and the matching results; wherein, the end time of the first preset time period is before the start time of the second preset time period.

7. The pulmonary bullae volume reduction system according to claim 5, characterized in that, The preset information also includes set values ​​and an initial baseline and an initial fluctuation threshold determined in advance based on the force sensor detecting the force on the push handle within a third preset time period, wherein the inside of the cylinder does not contain liquid during the third preset time period; The air extraction subsystem is further configured to: during the air extraction process, determine whether air extraction is complete based on the force sensor detecting the force on the push handle within a fourth preset time period, as well as the set value, the initial baseline, and the initial fluctuation threshold; wherein the end time of the third preset time period is before the start time of the fourth preset time period.

8. The lung bullae volume reduction system according to claim 1, characterized in that, The air extraction subsystem is also used to: issue a first alarm when the air extraction state is abnormal, and / or issue a second alarm when the air extraction is completed; and to visualize the air extraction state, the force on the push handle, and the air pressure data detected by the air pressure detection module.

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