Intravenous endoluminal radiofrequency closure control method, device, system and storage medium

Abstract

The embodiment of the application discloses a kind of intravenous cavity radio frequency closure control method and device, system and storage medium, the method comprises: the pressure information of N pressure sensing units spaced along the axial direction in radio frequency closure catheter treatment section is acquired in real time;According to pressure information, determine whether to meet preset target position determination condition, if yes, according to pressure information, determine whether the pressure applied to radio frequency closure catheter meets the preset target treatment pressure condition required for treatment, if yes, then control radio frequency energy output unit starts to output radio frequency treatment energy;Then, according to pressure information, determine whether to meet preset stop treatment condition, if yes, then control radio frequency energy output unit stops outputting radio frequency treatment energy. So it can reduce the non-user intention of unlocking operation on the basis of not affecting normal unlocking, improve user experience. So it can reduce the operation burden and improve the treatment quality.

Description

Technical Field

[0001] The present invention relates to the field of medical device technology, and in particular to a method, device, system and storage medium for intravenous radiofrequency closure control. Background Technology

[0002] Varicose veins, especially chronic venous insufficiency in the lower extremities, are a common vascular disease. Traditional treatments such as high ligation and stripping are highly invasive, have slow recovery times, and leave noticeable scars. With the development of minimally invasive interventional techniques, endovenous thermal closure has become the mainstream treatment method, among which endovenous radiofrequency ablation is widely used due to its definite efficacy and few complications.

[0003] An endovenous radiofrequency closure system typically consists of a radiofrequency closure generator and a dedicated radiofrequency closure catheter. Its basic principle is as follows: under ultrasound guidance, the catheter is inserted into the diseased vein. The generator produces radiofrequency energy at a specific frequency (usually 200-500 kHz), which is transmitted to the vein wall through the catheter electrode. This causes the intima and medial collagen to contract and fibrose upon heating (typically at a target temperature of 120°C), ultimately achieving permanent closure of the vein lumen.

[0004] Existing radio frequency closing generators and their operating modes mainly revolve around energy output control and process monitoring, but they still have limitations in the following key aspects:

[0005] Inconvenience of operation: Most existing intravenous radiofrequency closure catheters are triggered by a button, requiring doctors to perform multiple steps and press the treatment site tightly during the treatment process.

[0006] Uncertainty of manual pressure: If the treatment location is determined with the help of ultrasound imaging, and then manual pressure is applied, there may be situations where the pressure point is incorrect or the pressure is uneven. Summary of the Invention

[0007] This invention provides a method, device, system, and storage medium for controlling intravenous radiofrequency closure. By analyzing the pressure information provided by multiple pressure sensing units installed in the treatment section of the radiofrequency closure catheter, the radiofrequency treatment is automatically initiated after the radiofrequency closure catheter is in place and the required pressure for treatment is applied. This eliminates the need for cumbersome button triggering operations. Furthermore, the treatment is stopped when the pressure is not controlled according to the pressure information, ensuring treatment safety.

[0008] In a first aspect, embodiments of the present invention provide a method for controlling intravenous radiofrequency closure, comprising:

[0009] Real-time acquisition of pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter; N is a natural number greater than 1;

[0010] Based on the pressure information from the N pressure sensing units, it is determined whether the preset target position determination condition is met. The preset target position determination condition is used to indicate that the radio frequency closure conduit is stably placed at the target position.

[0011] If the preset target position determination condition is met, the pressure applied to the radiofrequency closure catheter is determined based on the pressure information of the N pressure sensing units to determine whether the pressure required for treatment meets the preset target treatment pressure condition.

[0012] When the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, the radiofrequency energy output unit is controlled to start outputting radiofrequency treatment energy.

[0013] After the radio frequency energy output unit starts outputting radio frequency therapy energy, it is determined whether the preset treatment stop condition is met based on the pressure information from the N pressure sensing units.

[0014] When the preset treatment stop condition is met, the radiofrequency energy output unit is controlled to stop outputting radiofrequency treatment energy.

[0015] As one embodiment, determining whether a preset treatment stop condition is met based on the pressure information from the N pressure sensing units includes:

[0016] The pressure drop amplitude of each pressure sensing unit at a preset unit time interval is calculated based on the pressure information of the N pressure sensing units. The pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to the preset reference pressure.

[0017] If the pressure drop of at least one of the pressure sensing units exceeds a preset acute drop threshold, the preset treatment stop condition is determined to be detected.

[0018] As one embodiment, determining whether the preset target position determination condition is met based on the pressure information from the N pressure sensing units includes:

[0019] When the pressure values ​​of N pressure sensing units are all greater than a preset contact threshold and the pressure change rate of N pressure sensing units is less than a preset environmental noise fluctuation threshold for a duration that reaches a preset duration threshold, the preset target position determination condition is determined to be met; wherein, the preset contact threshold and the preset environmental noise fluctuation threshold are both used to identify whether the pressure sensing unit is suspended in the blood flow of the venous cavity or attached to the inner wall of the blood vessel.

[0020] As one embodiment, determining whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition based on the pressure information from the N pressure sensing units includes:

[0021] The maximum pressure value P_max, minimum pressure value P_min, and average pressure value P_avg of the N pressure sensing units were calculated.

[0022] When P_min is greater than the preset contact threshold and the ratio of the difference between P_max and P_min to P_avg is less than the preset equal pressure threshold, the preset target treatment pressure condition is determined to be met.

[0023] As one embodiment, the method further includes:

[0024] When the preset target treatment pressure condition is not met, guidance information for guiding pressure application is generated and output based on the pressure information of the N pressure sensing units.

[0025] Continue executing the steps of determining whether the preset target treatment pressure condition is met and outputting the guidance information until the preset target treatment pressure condition is met.

[0026] Secondly, embodiments of the present invention provide an intravenous radiofrequency closure control device, comprising: a pressure acquisition module, used to acquire in real time the pressure information of N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter; N is a natural number greater than 1;

[0027] The target position identification module is used to determine whether a preset target position determination condition is met based on the pressure information of the N pressure sensing units. The preset target position determination condition is used to indicate that the radio frequency closure conduit is stably placed at the target position.

[0028] The target treatment pressure determination module is used to determine, based on the pressure information of the N pressure sensing units, whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure conditions required for treatment, provided that the preset target location determination conditions are met.

[0029] The treatment activation module is used to control the radiofrequency energy output unit to start outputting radiofrequency treatment energy when the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition.

[0030] The treatment stop identification module is used to determine whether the preset treatment stop conditions are met based on the pressure information of the N pressure sensing units after the radio frequency energy output unit starts to output radio frequency treatment energy.

[0031] The treatment stop module is used to control the radiofrequency energy output unit to stop outputting radiofrequency treatment energy when the preset treatment stop conditions are met.

[0032] Thirdly, embodiments of the present invention provide an endovenous radiofrequency closure control system, comprising: a radiofrequency closure catheter, a main control unit, a pressure signal processing unit, a radiofrequency energy output unit, and a human-machine interaction unit; the radiofrequency treatment segment of the radiofrequency closure catheter is provided with N pressure sensing units spaced apart along the axial direction; the N pressure sensing units, the pressure signal processing unit, and the main control unit are sequentially and electrically connected, and the main control unit is electrically connected to the radiofrequency energy output unit and the human-machine interaction unit respectively; the pressure signal processing unit is used to perform preset processing on the pressure signals of the N pressure sensing units and then send them to the main control unit;

[0033] The main control unit includes a memory and a processor;

[0034] A memory is used to store a computer program; the processor is used to read the computer program in the memory and, when executing the program, implement the intravenous radiofrequency closure control method as described above.

[0035] As one embodiment, there are three pressure sensing units, which are evenly spaced in the treatment section of the radiofrequency closure catheter.

[0036] As an example, the N pressure sensing units are embedded in the wall of the radio frequency closed conduit, and the sensing surface of the pressure sensing unit is flush with the surface of the radio frequency closed conduit.

[0037] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the intravenous radiofrequency closure control method as described in the first aspect.

[0038] Compared with the prior art, the technical solution provided by the embodiments of the present invention has at least the following positive effects:

[0039] In the technical solution of this invention, pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter is acquired in real time. This allows for the acquisition of pressure information at different locations within the treatment segment. Based on the pressure information from the N pressure sensing units, a preset target position determination condition is determined. This preset target position determination condition indicates that the radiofrequency closure catheter is stably placed at the target position, thus accurately identifying that the treatment position is in place. If the preset target position determination condition is met, the pressure applied to the radiofrequency closure catheter is determined based on the pressure information from the N pressure sensing units to ensure that the required treatment pressure is applied, avoiding incorrect pressing positions or uneven pressure. If the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, the radiofrequency energy output unit is controlled to start outputting radiofrequency treatment energy, automatically initiating treatment without button triggering. After the radiofrequency energy output unit starts outputting radiofrequency treatment energy, the pressure information from the N pressure sensing units is determined to ensure that a preset treatment stop condition is met. If the preset treatment stop condition is met, the radiofrequency energy output unit is controlled to stop outputting radiofrequency treatment energy. This ensures good vascular contact of the radiofrequency closure catheter during treatment, guaranteeing treatment safety. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the intravenous radiofrequency closure control system provided in Embodiment 1 of the present invention;

[0042] Figure 2 for Figure 1 The diagram shows the structure of the radiofrequency closure catheter in the intravenous radiofrequency closure control system.

[0043] Figure 3 This is a flowchart illustrating the intravenous radiofrequency closure control method provided in Embodiment 1 of the present invention.

[0044] Figure 4 This is a schematic diagram of the intravenous radiofrequency closure control device provided in Embodiment 2 of the present invention. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0046] Figure 1 This is a schematic diagram of the intravenous radiofrequency closure control system provided in Embodiment 1 of the present invention. The control system of this embodiment includes: a radiofrequency closure catheter 101; N pressure sensing units 102, a pressure signal processing unit 103, a main control unit 104, a radiofrequency energy output unit 105, and a human-machine interface unit 106 arranged axially along the radiofrequency treatment segment of the radiofrequency closure catheter 101. The N pressure sensing units 102, the pressure signal processing unit 103, and the main control unit 104 are electrically connected sequentially. The main control unit 104 is electrically connected to the radiofrequency energy output unit 105 and the human-machine interface unit 106, respectively. The pressure signal processing unit 103 preprocesses the pressure signals from the N pressure sensing units 102 and sends them to the main control unit 104. The main control unit 104 includes a memory and a processor; the memory stores a computer program; the processor reads the computer program from the memory and, when executing the program, implements the intravenous radiofrequency closure control method described below, which will not be repeated here.

[0047] The pressure signal processing unit 103 is used to collect pressure signals from N pressure sensing units 102 in real time, and after amplifying and filtering the pressure signals, convert them into digital pressure values ​​and send them to the main control unit 104. The main control unit 104 is used to analyze and make decisions based on the pressure information in order to control the radiofrequency treatment process.

[0048] like Figure 2As shown, the radiofrequency treatment section of the radiofrequency closed catheter 101 is axially spaced with, for example, three pressure sensing units 102, which are evenly spaced within the treatment section. The pressure sensing units 102 can be miniaturized piezoresistive or capacitive MEMS (Micro-Electro-Mechanical System) pressure sensors. N pressure sensing units 102 can be embedded within the wall of the radiofrequency closed catheter 101, with the sensing surface of each unit flush with the surface of the radiofrequency closed catheter 101, ensuring that the diameter of the radiofrequency closed catheter 101 is not increased and its flexibility is not affected. The radiofrequency treatment section of the radiofrequency closed catheter 101 retains the original radiofrequency treatment electrodes and temperature sensors. The switch button is removed from the handle of the radiofrequency closed catheter 101. The three pressure sensing units 102 are respectively located at the front, middle, and rear end of the radiofrequency treatment section, and the pressure values ​​of the three pressure sensing units 102 are denoted as P_front, P_mid, and P_rear, respectively. The pressure signal processing unit 103 can continuously read the pressure values ​​P_front, P_mid, and P_rear of the three pressure sensing units 102 at high frequency (e.g., 100 times per second) and then provide them to the main control unit 104.

[0049] Figure 3 The flowchart illustrates the intravenous radiofrequency closure control method provided in Embodiment 2 of the present invention, which can be used to control radiofrequency closure therapy. This method can be executed by an intravenous radiofrequency closure control device provided in this embodiment of the invention. This device can be implemented using software and / or hardware and is configured in the main control unit 104 of the intravenous radiofrequency closure control system of this embodiment of the invention. Figure 3 As shown, the intravenous radiofrequency closure control method of this application includes the following steps:

[0050] Step 301: Real-time acquisition of pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter; N is a natural number greater than 1.

[0051] Step 302: Determine whether the preset target position determination condition is met based on the pressure information from the N pressure sensing units. The preset target position determination condition is used to indicate that the radio frequency closure conduit is stably placed at the target position.

[0052] Step 303: If the preset target position determination conditions are met, determine whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure conditions required for treatment based on the pressure information of N pressure sensing units.

[0053] Step 304: When the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, control the radiofrequency energy output unit to start outputting radiofrequency treatment energy;

[0054] Step 305: After the radiofrequency energy output unit starts outputting radiofrequency treatment energy, determine whether the preset treatment stop condition is met based on the pressure information from the N pressure sensing units.

[0055] Step 306: When the preset treatment stop conditions are met, control the radiofrequency energy output unit to stop outputting radiofrequency treatment energy.

[0056] The following provides a detailed description of steps 301 to 306 of this embodiment.

[0057] Step 301: Real-time acquisition of pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter.

[0058] Step 302: Determine whether the preset target position determination condition is met based on the pressure information from the N pressure sensing units. The preset target position determination condition is used to indicate that the radio frequency closure conduit is stably placed at the target position.

[0059] Step 302 assists the physician in determining whether the radiofrequency closure catheter 101 is stably placed at the target position during catheter placement. For example, when the pressure values ​​of all N pressure sensing units 102 are greater than a preset contact threshold P_contact, and the pressure change rate of all N pressure sensing units 102 is less than a preset environmental noise fluctuation threshold ΔP_noise for a duration that reaches a preset duration threshold, the preset target position determination condition is met. The preset contact threshold P_contact and the preset environmental noise fluctuation threshold ΔP_noise are both used to identify whether the pressure sensing units are suspended in the blood flow of the venous cavity or attached to the inner wall of the blood vessel. During the placement of the radiofrequency closure catheter 101 into the target position, as the radiofrequency closure catheter 101 moves in the blood within the venous cavity, the pressure signals of the N pressure sensing units 102 will continuously fluctuate due to hemodynamic disturbances, and the average pressure value of the N pressure sensing units 102 is less than or equal to P_contact, and the pressure change rate of all N pressure sensing units 102 is greater than or equal to the preset environmental noise fluctuation threshold ΔP_noise. Once the radiofrequency closure catheter 101 reaches the target location, the operator attaches it to the inner wall of the blood vessel. At this point, the sensing surface of the pressure sensing unit 102 comes into contact with the tissue, generating a certain pressure. The average pressure value of the N pressure sensing units 102 is greater than P_contact, and the pressure change rate of the N pressure sensing units 102 is less than the preset environmental noise fluctuation threshold ΔP_noise. The pressure change rate can be calculated as the ratio of the pressure value change to the time interval within a certain time interval. The time interval can be obtained by testing the pressure change of the radiofrequency closure catheter 101 in the blood flow. The key is to accurately characterize the pressure fluctuation of the radiofrequency closure catheter in the blood flow through the pressure change rate. It is understood that P_contact and ΔP_noise can be obtained through experimental debugging, and this embodiment does not limit their specific values.

[0060] Specifically, under ultrasound guidance, the doctor inserts a radiofrequency closure catheter into the target vein (such as the great saphenous vein) through the puncture point. At this time, the intravenous radiofrequency closure control system (hereinafter referred to as the control system) is powered on and enters the placement monitoring mode. Subsequently, the main control unit 104 executes the following decision logic:

[0061] a. Position stability determination: The average pressure and the pressure change rate of each pressure sensing unit 102 are calculated based on the pressure information from the three pressure sensing units 102. As long as the catheter moves in the blood, the pressure values ​​of the three pressure sensing units 102 will continue to fluctuate due to hemodynamic disturbances, and the average pressure of the three pressure sensing units 102 is lower than P_contact.

[0062] b. Position determination: When the tip of the radiofrequency closure catheter reaches the predetermined treatment starting position, i.e., the target position, which is usually located below the junction of the saphenofemoral vein, the doctor presses the radiofrequency closure catheter 101 against the vein wall. At this time, the pressure values ​​of the three pressure sensing units 102 will rise simultaneously, and the pressure values ​​will be stable and greater than P_contact. Due to the uniform support of the vein wall, the pressure values ​​of the three pressure sensing units 102 will be close to each other, and the pressure change rate will approach zero.

[0063] c. When the control system detects that P_front, P_mid, and P_rear are all greater than P_contact, and the pressure change rate of each pressure sensing unit 102 is less than ΔP_noise for a duration greater than a preset time threshold (e.g., 2 seconds), the main control unit 104 determines that the radio frequency closure conduit has been stably placed in the target position. The control system provides visual prompts through the display screen of the human-machine interface unit 106, such as displaying that the conduit is in place, and can also output audible prompts for confirmation.

[0064] Step 303: If the preset target position determination conditions are met, determine whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure conditions required for treatment based on the pressure information of N pressure sensing units.

[0065] Step 303 may include: calculating the maximum pressure P_max, minimum pressure P_min, and average pressure P_avg of the N pressure sensing units 102; determining that the preset target treatment pressure condition is met when P_min is greater than a preset contact threshold P_contact and the ratio of the difference between P_max and P_min to P_avg is less than a preset average pressure threshold; when the preset target treatment pressure condition is not met, generating and outputting guidance information for guiding pressure application based on the pressure information of the N pressure sensing units, and continuing to execute the steps of determining whether the preset target treatment pressure condition is met and outputting guidance information until the preset target treatment pressure condition is met. It is understood that step 303 can analyze and judge the pressure information of the three pressure sensing units 102 collected each time, or it can be analyzed at intervals of several cycles; no specific limitation is made here.

[0066] Specifically, after the radiofrequency closure catheter 101 is stably placed in the target position, the control system automatically enters the press-ready mode. The doctor can manually press the skin of the treatment area to ensure that the treatment segment of the radiofrequency closure catheter 101 is well attached to the vein wall. This embodiment quantifies this to ensure that the treatment segment of the radiofrequency closure catheter 101 is subjected to uniform pressure.

[0067] After the doctor begins chest compressions, the control system monitors the pressure information from the three pressure sensing units in real time. The main control unit 104 calculates P_max and P_min and determines whether the following conditions are met:

[0068] Condition 1: P_min > P_contact (ensuring all contacts are made);

[0069] Condition 2: (P_max - P_min) / P_avg < ΔP_uniform;

[0070] P_avg is the average pressure of N pressure sensing units 102, and ΔP_uniform is the preset pressure equalization threshold, such as 15%.

[0071] When conditions 1 and 2 above are met, the display screen will prompt "Pressure is good, treatment can begin". If condition 2 is not met, for example, if P_mid is significantly lower than P_front and P_rear, the screen will prompt "Insufficient pressure in the middle section, please adjust the pressure position", and a specific prompt sound will be emitted through the speaker to guide the doctor to adjust the pressure point of the fingers until the pressure is uniform.

[0072] Step 304: When the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, control the radiofrequency energy output unit to start outputting radiofrequency treatment energy.

[0073] Once the pressure applied to the radiofrequency closure catheter 101 meets the preset target treatment pressure condition, the control system automatically controls the radiofrequency energy output unit 105 to start outputting radiofrequency treatment energy. The control system enters "treatment mode". The radiofrequency energy output unit 105 outputs energy to the electrodes of the radiofrequency closure catheter 101 according to preset treatment parameters (such as a target temperature of 120°C).

[0074] Step 305: After the radiofrequency energy output unit starts outputting radiofrequency treatment energy, determine whether the preset treatment stop condition is met based on the pressure information from the N pressure sensing units.

[0075] Step 305 provides an important safety monitoring mechanism for the treatment mode. Step 305 may include: calculating the pressure drop amplitude of each pressure sensing unit 102 at a preset unit time interval based on the pressure information of N pressure sensing units 102. The pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to a preset reference pressure. If the pressure drop amplitude of at least one pressure sensing unit 102 is greater than a preset acute drop threshold, a preset treatment stop condition is determined to have been detected. The preset unit time interval is, for example, 0.1 s, and the preset reference pressure is, for example, the pressure value of the pressure sensing unit 102 at the beginning of the preset unit time interval, or it may be a preset fixed pressure value. This embodiment does not impose specific limitations, as long as it can accurately reflect the instantaneous pressure drop of the radiofrequency closure catheter.

[0076] Specifically, during treatment, the main control unit 104 continuously acquires pressure information from N pressure sensing units 102. The control system has a preset acute drop threshold ΔP_acute, for example, a pressure drop of more than 50% within 0.1 seconds. This jump may mean: the catheter suddenly shifts due to sudden vasodilation after vasospasm, or the patient moves suddenly causing loss of adhesion, or the vein wall contracts instantaneously under heat, resulting in a drastic change in contact pressure, thus determining that a preset treatment stop condition has been detected.

[0077] Step 306: When the preset treatment stop conditions are met, control the radiofrequency energy output unit to stop outputting radiofrequency treatment energy.

[0078] When the preset treatment stop condition is detected, a highest-priority interrupt command is immediately sent to the radiofrequency energy output unit 105, instantly cutting off the energy output. At the same time, a red alarm message "Abnormal pressure, treatment interrupted" is displayed on the human-machine interface, accompanied by a rapid alarm sound, to alert the doctor to check the situation.

[0079] Compared with the prior art, the intravenous radiofrequency closure control method of this invention determines whether the radiofrequency closure catheter is stably placed in the target position based on the pressure information of the radiofrequency treatment segment. Then, it automatically starts treatment when the pressure applied to the radiofrequency closure catheter meets the pressure required for treatment. Thus, treatment can be started simply by pressing the treatment site without the need for button triggering, reducing the doctor's workload. At the same time, it ensures close contact between the blood vessel and the catheter, enhances the treatment effect, and reduces the number of treatments. During the treatment process, if the pressure drop of the radiofrequency closure catheter is abnormal, the treatment energy is immediately cut off to ensure treatment safety.

[0080] Embodiment 3 of the present invention provides an intravenous radiofrequency closure control device, configured in the main control unit of the control system. For example... Figure 4As shown, the control device 400 includes: a pressure acquisition module 401, a target position identification module 402, a target treatment pressure determination module 403, a treatment activation module 404, a treatment stop identification module 405, and a treatment stop module 406.

[0081] The pressure acquisition module 401 is used to acquire pressure information in real time from N pressure sensing units that are spaced apart along the axial direction in the radiofrequency closure catheter treatment section; N is a natural number greater than 1.

[0082] The target position identification module 402 is used to determine whether the preset target position determination condition is met based on the pressure information of N pressure sensing units. The preset target position determination condition is used to indicate that the radio frequency closure conduit is stably placed at the target position.

[0083] The target treatment pressure determination module 403 is used to determine whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure conditions based on the pressure information of N pressure sensing units, provided that the preset target position determination conditions are met.

[0084] The treatment activation module 404 is used to control the radiofrequency energy output unit to start outputting radiofrequency treatment energy when the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition.

[0085] The treatment stop identification module 405 is used to determine whether the preset treatment stop conditions are met based on the pressure information of N pressure sensing units after the radiofrequency energy output unit starts to output radiofrequency treatment energy.

[0086] The treatment stop module 406 is used to control the radiofrequency energy output unit to stop outputting radiofrequency treatment energy when the preset treatment stop conditions are met.

[0087] Optionally, the treatment stop identification module 405 is specifically used to calculate the pressure drop amplitude of each pressure sensing unit at a preset unit time interval based on the pressure information of N pressure sensing units, wherein the pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to the preset reference pressure; and to determine that a preset treatment stop condition has been detected when the pressure drop amplitude of at least one pressure sensing unit is greater than a preset acute drop threshold.

[0088] Optionally, the target location identification module 402 is specifically used to determine that the preset target location determination condition is met when the pressure values ​​of N pressure sensing units are all greater than a preset contact threshold and the pressure change rate of N pressure sensing units is less than a preset environmental noise fluctuation threshold for a duration that reaches a preset duration threshold; wherein, the preset contact threshold and the preset environmental noise fluctuation threshold are both used to identify whether the pressure sensing unit is suspended in the blood flow of the venous cavity or attached to the inner wall of the blood vessel.

[0089] Optionally, the target treatment pressure determination module 403 is specifically used to calculate the maximum pressure P_max, minimum pressure P_min, and average pressure P_avg of N pressure sensing units; when P_min is greater than a preset contact threshold and the ratio of the difference between P_max and P_min to P_avg is less than a preset equal pressure threshold, the preset target treatment pressure condition is determined to be met.

[0090] Optionally, the target treatment pressure determination module 403 can also be used to generate and output guidance information for guiding pressure application based on the pressure information of the N pressure sensing units when the preset target treatment pressure condition is not met; and continue to execute the steps of determining whether the preset target treatment pressure condition is met and outputting the guidance information until the preset target treatment pressure condition is met.

[0091] Compared with the prior art, the intravenous radiofrequency closure control device of this invention determines whether the radiofrequency closure catheter is stably placed in the target position based on the pressure information of the radiofrequency treatment segment. Then, it automatically starts treatment when the pressure applied to the radiofrequency closure catheter meets the pressure required for treatment. Thus, treatment can be started simply by pressing the treatment site without the need for button triggering, reducing the doctor's workload. At the same time, it ensures close contact between the blood vessel and the catheter, enhances the treatment effect, and reduces the number of treatments. During the treatment process, if the pressure drop of the radiofrequency closure catheter is abnormal, the treatment energy is immediately cut off to ensure treatment safety.

[0092] Embodiment 4 of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a computer processor, is used to perform the technical solution of any method embodiment.

[0093] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or grid device, etc.) to execute the methods described in the various embodiments of the present invention.

[0094] It is worth noting that in the embodiments of the above-mentioned device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of the present invention.

[0095] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A venous radiofrequency closure control device, characterized in that, include: The pressure acquisition module is used to acquire pressure information in real time from N pressure sensing units that are spaced apart along the axial direction in the radiofrequency closure catheter treatment section; N is a natural number greater than 1; The target location identification module is used to determine whether a preset target location determination condition is met based on the pressure information of the N pressure sensing units. The preset target location determination condition indicates that the radiofrequency closure catheter is stably placed at the target location. Specifically, the target location identification module determines that the preset target location determination condition is met when the pressure values ​​of the N pressure sensing units are all greater than a preset contact threshold and the pressure change rate of the N pressure sensing units is less than a preset environmental noise fluctuation threshold for a duration that reaches a preset duration threshold. The preset contact threshold and the preset environmental noise fluctuation threshold are both used to identify whether the pressure sensing units are suspended in the venous blood flow or attached to the inner wall of the blood vessel. The target treatment pressure determination module is used to determine, based on the pressure information of the N pressure sensing units, whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure conditions required for treatment, provided that the preset target location determination conditions are met. The treatment activation module is used to control the radiofrequency energy output unit to start outputting radiofrequency treatment energy when the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition. The treatment stop identification module is used to determine whether the preset treatment stop conditions are met based on the pressure information of the N pressure sensing units after the radio frequency energy output unit starts to output radio frequency treatment energy. The treatment stop module is used to control the radiofrequency energy output unit to stop outputting radiofrequency treatment energy when the preset treatment stop conditions are met.

2. The apparatus according to claim 1, characterized in that, The treatment stop recognition module is specifically used to calculate the pressure drop amplitude of each pressure sensing unit at a preset unit time interval based on the pressure information of N pressure sensing units. The pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to the preset reference pressure. If the pressure drop of at least one pressure sensing unit exceeds a preset acute drop threshold, a preset treatment stop condition is detected.

3. The apparatus according to claim 1, characterized in that, The target treatment pressure determination module is specifically used to calculate the maximum pressure P_max, minimum pressure P_min, and average pressure P_avg of N pressure sensing units; when P_min is greater than a preset contact threshold and the ratio of the difference between P_max and P_min to P_avg is less than a preset equal pressure threshold, the preset target treatment pressure condition is determined to be met.

4. The apparatus according to claim 3, characterized in that, The target treatment pressure determination module It can also be used to generate and output guidance information for guiding pressure application based on the pressure information of the N pressure sensing units when the preset target treatment pressure condition is not met; Continue executing the steps of determining whether the preset target treatment pressure condition is met and outputting the guidance information until the preset target treatment pressure condition is met.

5. A venous radiofrequency closure control system, characterized in that, include: The system comprises a radiofrequency closure catheter, a main control unit, a pressure signal processing unit, a radiofrequency energy output unit, and a human-machine interface unit. N pressure sensing units are spaced axially along the radiofrequency treatment segment of the radiofrequency closure catheter. The N pressure sensing units, the pressure signal processing unit, and the main control unit are sequentially and electrically connected. The main control unit is electrically connected to both the radiofrequency energy output unit and the human-machine interface unit. The pressure signal processing unit processes the pressure signals from the N pressure sensing units and then sends them to the main control unit. The main control unit includes a memory and a processor; Memory, used to store computer programs; The processor is configured to read a computer program from the memory and, when executing the program, implement an intravenous radiofrequency closure control method, the method comprising: Real-time acquisition of pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter; N is a natural number greater than 1; Determining whether a preset target position determination condition is met based on the pressure information from the N pressure sensing units, wherein the preset target position determination condition indicates that the radiofrequency closure conduit is stably placed at the target position; the determination of whether the preset target position determination condition is met based on the pressure information from the N pressure sensing units includes: When the pressure values ​​of N pressure sensing units are all greater than a preset contact threshold and the pressure change rate of N pressure sensing units is less than a preset environmental noise fluctuation threshold for a duration that reaches a preset duration threshold, the preset target position determination condition is determined to be met; wherein, the preset contact threshold and the preset environmental noise fluctuation threshold are both used to identify whether the pressure sensing unit is suspended in the blood flow of the venous cavity or attached to the inner wall of the blood vessel. If the preset target position determination condition is met, the pressure applied to the radiofrequency closure catheter is determined based on the pressure information of the N pressure sensing units to determine whether the pressure required for treatment meets the preset target treatment pressure condition. When the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, the radiofrequency energy output unit is controlled to start outputting radiofrequency treatment energy. After the radio frequency energy output unit starts outputting radio frequency therapy energy, it is determined whether the preset treatment stop condition is met based on the pressure information from the N pressure sensing units. When the preset treatment stop condition is met, the radiofrequency energy output unit is controlled to stop outputting radiofrequency treatment energy.

6. The system according to claim 5, characterized in that, The step of determining whether a preset treatment stop condition is met based on the pressure information from the N pressure sensing units includes: The pressure drop amplitude of each pressure sensing unit at a preset unit time interval is calculated based on the pressure information of the N pressure sensing units. The pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to the preset reference pressure. If the pressure drop of at least one of the pressure sensing units exceeds a preset acute drop threshold, the preset treatment stop condition is determined to be detected.

7. The system according to claim 5, characterized in that, The step of determining whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition based on the pressure information from the N pressure sensing units includes: The maximum pressure value P_max, minimum pressure value P_min, and average pressure value P_avg of the N pressure sensing units were calculated. When P_min is greater than the preset contact threshold and the ratio of the difference between P_max and P_min to P_avg is less than the preset equal pressure threshold, the preset target treatment pressure condition is determined to be met.

8. The system according to claim 7, characterized in that, The method further includes: When the preset target treatment pressure condition is not met, guidance information for guiding pressure application is generated and output based on the pressure information of the N pressure sensing units. Continue executing the steps of determining whether the preset target treatment pressure condition is met and outputting the guidance information until the preset target treatment pressure condition is met.

9. The system according to claim 5, characterized in that, There are three pressure sensing units, which are evenly spaced in the treatment section of the radiofrequency closure catheter.

10. The system according to claim 5, characterized in that, The N pressure sensing units are embedded in the wall of the radio frequency closed conduit, and the sensing surface of the pressure sensing unit is flush with the surface of the radio frequency closed conduit.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements a method for controlling intravenous radiofrequency closure, the method comprising: Real-time acquisition of pressure information from N pressure sensing units spaced axially along the treatment segment of the radiofrequency closure catheter; N is a natural number greater than 1; Determining whether a preset target position determination condition is met based on the pressure information from the N pressure sensing units, wherein the preset target position determination condition indicates that the radiofrequency closure conduit is stably placed at the target position; the determination of whether the preset target position determination condition is met based on the pressure information from the N pressure sensing units includes: When the pressure values ​​of N pressure sensing units are all greater than a preset contact threshold and the pressure change rate of N pressure sensing units is less than a preset environmental noise fluctuation threshold for a duration that reaches a preset duration threshold, the preset target position determination condition is determined to be met; wherein, the preset contact threshold and the preset environmental noise fluctuation threshold are both used to identify whether the pressure sensing unit is suspended in the blood flow of the venous cavity or attached to the inner wall of the blood vessel. If the preset target position determination condition is met, the pressure applied to the radiofrequency closure catheter is determined based on the pressure information of the N pressure sensing units to determine whether the pressure required for treatment meets the preset target treatment pressure condition. When the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition, the radiofrequency energy output unit is controlled to start outputting radiofrequency treatment energy. After the radio frequency energy output unit starts outputting radio frequency therapy energy, it is determined whether the preset treatment stop condition is met based on the pressure information from the N pressure sensing units. When the preset treatment stop condition is met, the radiofrequency energy output unit is controlled to stop outputting radiofrequency treatment energy.

12. The medium according to claim 11, characterized in that, The step of determining whether a preset treatment stop condition is met based on the pressure information from the N pressure sensing units includes: The pressure drop amplitude of each pressure sensing unit at a preset unit time interval is calculated based on the pressure information of the N pressure sensing units. The pressure drop amplitude is the ratio of the pressure drop amount corresponding to the preset unit time interval to the preset reference pressure. If the pressure drop of at least one of the pressure sensing units exceeds a preset acute drop threshold, the preset treatment stop condition is determined to be detected.

13. The medium according to claim 11, characterized in that, The step of determining whether the pressure applied to the radiofrequency closure catheter meets the preset target treatment pressure condition based on the pressure information from the N pressure sensing units includes: The maximum pressure value P_max, minimum pressure value P_min, and average pressure value P_avg of the N pressure sensing units were calculated. When P_min is greater than the preset contact threshold and the ratio of the difference between P_max and P_min to P_avg is less than the preset equal pressure threshold, the preset target treatment pressure condition is determined to be met.

14. The medium according to claim 13, characterized in that, The method further includes: When the preset target treatment pressure condition is not met, guidance information for guiding pressure application is generated and output based on the pressure information of the N pressure sensing units. Continue executing the steps of determining whether the preset target treatment pressure condition is met and outputting the guidance information until the preset target treatment pressure condition is met.

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