Vascular intervention embolism degree evaluation device based on local arterial pressure

Abstract

The invention relates to a vascular intervention embolism degree evaluation device based on local arterial pressure. The device comprises a vascular intervention embolism degree evaluation module; the vascular intervention embolism degree evaluation module calculates the vascular intervention embolism degree according to the following formula: # imgabs0 #, t is a time coefficient, it is stipulated that the time when an embolism agent begins to be injected is 0, and along with continuous increase of injection of the embolism agent, F (t) is the vascular embolism degree based on local arterial pressure characterization and changes along with injection of the embolism agent; p1 (t = 0) is the initial blood vessel pressure collected at a G point of a blood supply blood vessel of a focus before drug injection, and PFin is the final blood vessel pressure collected when the simulated interventional embolization operation reaches an embolization end point; p * 1 is the converted blood vessel pressure of the G point. According to the method, evaluation of the embolism terminal point in the vascular intervention embolism operation is achieved, whether the embolism terminal point is reached or not can be evaluated more objectively and accurately, and radiation injuries to patients and medical staff can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of interventional radiology arterial vascular interventional embolism, and in particular to a device for evaluating the degree of vascular interventional embolism based on local arterial blood pressure. Background Art

[0002] Interventional embolization is a method of treating lesions by injecting embolic agents into blood vessels to block blood flow. In the prior art, the embolization endpoint usually relies on imaging methods, such as digital subtraction angiography (DSA) to observe the blood flow state and determine whether the embolization endpoint has been reached. However, this image-based evaluation method is highly subjective and easily affected by the doctor's experience and operating environment. In addition, frequent imaging operations will increase the radiation exposure of patients and medical staff, posing a greater health risk. Therefore, there is an urgent need for a more objective and accurate embolization endpoint evaluation device to reduce uncertainty in surgery and improve the safety of treatment.

[0003] Chinese patent CN114880960A proposed a method for evaluating the dose and injection position of radioembolization based on fluid dynamics, but the image preprocessing-based method is too cumbersome and the algorithm is relatively complex, which cannot guarantee the real-time evaluation and is difficult to synchronize with the surgery, so it is not practical. Chinese patent CN113192554B proposed a dose optimization method for interventional surgery robots with radioactive particle intraradiotherapy, which achieves optimal dose planning through dose estimation, but the surgical process is sudden and unpredictable. This method is only applicable to preoperative drug dose estimation and cannot achieve the purpose of real-time monitoring of interventional embolization surgery. Summary of the invention

[0004] In view of the urgent need for a quantitative and standardized method for determining the embolization endpoint in current vascular interventional embolization surgery, the technical problem to be solved by the present invention is to objectively and accurately evaluate whether the vascular interventional embolization surgery has reached the embolization endpoint.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for assessing the degree of embolism during vascular intervention based on local arterial pressure, the device comprising a measuring device for measuring required data and a module for assessing the degree of embolism during vascular intervention;

[0007] The vascular intervention embolism degree assessment module calculates the vascular intervention embolism degree according to the following formula:

[0008]

[0009] Where t is the time coefficient, which is set to 0 when the embolic agent is first injected and increases with the injection of the embolic agent. F(t) is the degree of vascular embolism characterized by local arterial pressure, which changes with the injection of the embolic agent. P 1(t＝0) is the initial vascular pressure collected at the G point before drug injection, P Fin P is the final vascular pressure collected when embolization is reached to simulate the end point of interventional embolization. * 1 is the converted vascular pressure at the G point,

[0010] The converted vascular pressure P at point G * 1 , the formula is:

[0011] P 1 * =P 1 -[P 2 -P 2(t＝0) ]×a;

[0012] Among them, P 1 and P 2 The real-time vascular pressures are collected at point G, the blood vessel supplying the lesion, and point H, the branch vessel of the abdominal aorta to the lesion organ. 2(t＝0) is the initial vascular pressure collected at point H before drug injection, a is the pressure transmission coefficient, which is a fixed value.

[0013] Furthermore, the device comprises:

[0014] A balloon catheter used to simulate the effects of embolic agents on blood vessels during interventional embolization procedures;

[0015] Two pressure measurement catheters, which are ordinary 4Fr catheters with a hollow interior, measure pressure by drawing blood out;

[0016] A main body, used to install a balloon catheter and two pressure measuring catheters, with a display screen capable of displaying the values ​​collected by the pressure measuring catheters and the real-time degree of vascular embolism;

[0017] The balloon catheter and two pressure measuring catheters constitute a measuring unit, and a vascular intervention embolism degree assessment module is loaded in the main body.

[0018] Furthermore, when F(t) is greater than or equal to 95%, it is determined that the embolization endpoint has been reached.

[0019] Furthermore, the method for using the device comprises the following steps:

[0020] S1: Pretreatment is performed before the operation officially begins to simulate the state of the blood vessels when the interventional embolization operation reaches the embolization end point, and the final blood vessel pressure P is collected. Fin ;

[0021] S2: During the operation, the initial vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected before the drug is injected. After the collection, the drug is injected, and the real-time vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected at the same time;

[0022] S3: Final blood vessel pressure P obtained based on steps S1 and S2 Fin , initial vascular pressure and real-time vascular pressure, comprehensively analyze the degree of vascular embolism, and evaluate whether the embolism endpoint has been reached.

[0023] The method for evaluating embolization endpoints of vascular intervention based on local arterial pressure includes the following steps:

[0024] S1: Pretreatment is performed before the operation officially begins to simulate the state of the blood vessels when the interventional embolization operation reaches the embolization end point, and the final blood vessel pressure P is collected. Fin ;

[0025] S2: During the operation, the initial vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected before the drug is injected. After the collection, the drug is injected, and the real-time vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected at the same time;

[0026] S3: Final blood vessel pressure P obtained based on steps S1 and S2 Fin , initial vascular pressure and real-time vascular pressure, comprehensively analyze the degree of vascular embolism, and evaluate whether the embolism endpoint has been reached.

[0027] Furthermore, the specific implementation method of step S1 includes the following steps:

[0028] S1-1: Deliver the balloon catheter together with any one of the pressure measurement catheters to the G point of the blood vessel supplying the lesion;

[0029] The G-spot is located at the blood vessel supplying the lesion;

[0030] S1-2: After stabilization, the balloon catheter is inflated to gradually enlarge the balloon until it completely blocks the blood vessel, simulating the effect of drug injection on blood flow during interventional embolization surgery;

[0031] S1-3: DSA is used to determine that when the balloon catheter completely blocks the blood vessel, blood flow cannot pass through and subsequent blood vessels cannot be displayed, marking the end point of embolism. The pressure measurement catheter is used to collect the average vascular pressure at point G at this time, which is defined as the final vascular pressure.

[0032] Furthermore, the specific implementation method of step S2 includes the following steps:

[0033] S2-1: Deliver the drug injection catheter to the blood vessel supplying the lesion, insert the first pressure measurement catheter into point G, and insert the second pressure measurement catheter into point H at the branch vessel of the abdominal aorta to the lesion organ;

[0034] The G point is consistent with that in S1-1, and the H point is located at the branch blood vessel of the abdominal aorta to the diseased organ;

[0035] S2-2: When each catheter reaches the target position and stabilizes, two pressure measurement catheters are used to collect the average blood vessel pressure at the location, which is defined as the initial blood vessel pressure;

[0036] S2-3: After the measurement is completed, the drug injection is started. During the drug injection, two pressure measurement catheters are used to collect the average blood vessel pressure at the two locations, which is defined as the real-time blood vessel pressure.

[0037] Furthermore, the specific implementation method of step S3 includes the following steps:

[0038] S3-1: Based on the initial vascular pressure and the real-time vascular pressure obtained in steps S1 and S2, the converted vascular pressure at point G is obtained. The formula is:

[0039] P 1 * =P 1 -[P 2 -P 2(t＝0) ]×a;

[0040] Among them, P * 1 is the converted vascular pressure at point G, P 1 and P 2 The real-time vascular pressure collected at point G and point H, P 2(t＝0) is the initial vascular pressure collected at point H, a is the pressure transmission coefficient;

[0041] The pressure transfer coefficient is the pressure fluctuation loss from point H to point G, which is mainly determined by experiments, clinical data and experience. Preferably, the value range of a is [0.75, 0.85];

[0042] S3-2: Based on the final vascular pressure, initial vascular pressure and converted vascular pressure obtained in steps S1, S2 and S3-1, the vascular intervention embolism degree assessment module is used to characterize the degree of vascular embolism, and the formula is:

[0043]

[0044] Where F(t) is the degree of vascular embolism characterized by local arterial pressure, P 1(t＝0) is the initial vascular pressure collected at point G, PFin is the final vascular pressure collected in step S1.

[0045] S3-3: When the degree of vascular embolism represented by the formula in step S3-2 is greater than or equal to 95%, it is determined that the embolism endpoint has been reached, the drug injection is stopped, and the operation is terminated.

[0046] Furthermore, in theory, when the calculation result of the formula in step S3-2 is 100%, it is the end point of embolism. Considering that the pressure may be affected by compensation, there should be an appropriate safety factor to avoid excessive dosage of the embolic agent. Preferably, the safety factor is 0.95, that is, when the degree of vascular embolism represented by the formula in step S3-2 is greater than or equal to 95%, it is stipulated that the end point of embolism has been reached.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] The present invention realizes the evaluation of the embolization endpoint in vascular interventional embolization surgery based on local arterial pressure, and can more objectively and accurately evaluate whether the embolization endpoint has been reached. At the same time, it can reduce the use of DSA in vascular interventional embolization surgery and can effectively reduce the radiation damage to patients and medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic diagram of an embodiment of a device for assessing the degree of embolism during vascular intervention based on local arterial pressure;

[0050] Figure 2 This is a schematic diagram of the relative position of the lesion in the renal embolization surgery in Example 1;

[0051] Figure 3 This is a schematic diagram of the relative positions of the catheters during pretreatment in the renal embolization surgery in Example 1;

[0052] Figure 4 This is a schematic diagram of the relative positions of the catheters in the renal embolization surgery in Example 1;

[0053] Figure 5 This is a schematic diagram of the relative position of the lesion in the liver embolization surgery in Example 2;

[0054] Figure 6 This is a schematic diagram of the relative positions of the catheters during pretreatment in liver embolization surgery in Example 2;

[0055] Figure 7 This is a schematic diagram of the relative positions of the catheters in the liver embolization surgery in Example 2;

[0056] Figure 8 The figure is a flowchart of the method for evaluating embolization endpoints during vascular intervention based on local arterial pressure; DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the specific embodiments described are only a part of the embodiments, not all of the specific embodiments. Generally, the various parts of the specific embodiments of the present invention described and shown in the drawings herein can be designed with various different configurations, and the present invention can also have other embodiments,

[0058] Therefore, the detailed description of the specific embodiments of the present invention provided below is not intended to limit the scope of the invention claimed, but merely represents the selected embodiments of the present invention. Based on the specific embodiments of this aspect, all other specific embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0059] In order to further understand the content, features and functions of the present invention, the following specific implementation methods are listed and combined with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 6 , Figure 8 Detailed description:

[0060] A device for assessing the degree of embolism during vascular intervention based on local arterial pressure, such as Figure 1 As shown, including:

[0061] A balloon catheter 001, used to simulate the impact of embolic agents on blood vessels during interventional embolization surgery;

[0062] Two pressure measuring catheters 002 are common 4Fr catheters with a hollow interior, and are used to measure pressure by drawing blood out;

[0063] A main body 003 is used to install each catheter, and a display screen 004 is provided on it, which can display the values ​​measured by the measuring catheter and the real-time degree of vascular embolism.

[0064] Embodiment 1:

[0065] Taking renal embolization surgery as a specific example, the relative positions of the lesions and the blood vessels are as follows: Figure 2 As shown,

[0066] Blood vessel 2-1 is the abdominal aorta, blood vessel 2-2 is the renal aorta, blood vessel 2-3 is the primary branch of the renal aorta, and blood vessel 2-4 is the secondary branch of the renal aorta, which is also the blood supply vessel of the lesion; the shaded area A1 represents the kidney, and the shaded area A2 represents the lesion.

[0067] The device proposed by the present invention is used to evaluate the degree of vascular embolism, including the following steps:

[0068] S1: Pretreatment is performed before the operation officially begins to simulate the state of reaching the embolization end point during interventional embolization surgery and collect the final vascular pressure P Fin ;

[0069] Obtaining the final vascular pressure after pretreatment includes the following steps;

[0070] S1-1: Deliver the balloon catheter 3-1 and the pressure measurement catheter 3-2 together through the abdominal aorta to the G point;

[0071] The relative positions of the catheters and the specific position of the G point are as follows: Figure 2 As shown,

[0072] The solid line 3-1 represents the balloon catheter, and the dotted line 3-2 represents the pressure measurement catheter; the blood vessel where the G point is located is the blood vessel supplying the lesion, which is the secondary branch blood vessel of the renal artery in this example;

[0073] S1-2: After stabilization, the balloon catheter is inflated to simulate the effect of drug injection on blood vessels during interventional embolization surgery;

[0074] S1-3: DSA is used to determine that when the blood vessels supplying the lesion are completely blocked by the balloon catheter, blood flow cannot pass through and subsequent blood vessels cannot be displayed, marking the end point of embolism. The mean blood vessel pressure at point G is collected using a pressure measurement catheter and defined as the final blood vessel pressure.

[0075] S2: During the operation, the initial vascular pressure is collected before the drug injection, and the drug is injected after the collection is completed. At the same time, the real-time vascular pressure is collected.

[0076] Pressure acquisition during surgery includes the following steps:

[0077] S2-1: Deliver the pressure measurement catheter 4-1 and the drug injection catheter 4-2 to the lesion area, i.e., point G, through the abdominal aorta, and deliver the pressure measurement catheter 4-3 to point H through the abdominal aorta;

[0078] The relative positions of the catheters and the specific positions of the G point and the H point are as follows: Figure 4 As shown:

[0079] Among them, the dotted lines 4-1 and 4-3 represent pressure measurement catheters, and the solid line 4-2 represents the drug injection catheter; point G is consistent with that described in step S1-1; point H is located at the branch blood vessel from the abdominal aorta to the kidney;

[0080] S2-2: After the catheter is inserted and stabilized, two pressure measuring catheters are used to collect the average blood vessel pressure at the location, which is defined as the initial blood vessel pressure;

[0081] S2-3: After the collection is completed, the drug injection is started. During the drug injection, two pressure measurement catheters are used to collect the average blood vessel pressure at the two locations, which is defined as the real-time blood vessel pressure;

[0082] The drug injection is:

[0083] A mixed solution containing an embolic agent and a contrast agent is injected into the blood vessel through an injection catheter at an average rate of less than 0.5 mL / min;

[0084] Measure real-time vascular pressure as:

[0085] After each injection of 1 mL of the mixed solution of embolic agent and contrast agent, the mean blood vessel pressure at the corresponding position was collected using two pressure measurement catheters.

[0086] S3: Based on the final vascular pressure, initial vascular pressure and real-time vascular pressure obtained from S1 and S2, the degree of vascular embolism is comprehensively analyzed to assess whether the embolism endpoint has been reached.

[0087] The evaluation of whether the endpoint has been reached includes the following steps:

[0088] S3-1: Based on the initial vascular pressure and the real-time vascular pressure obtained in steps S1 and S2, the converted vascular pressure at point G is obtained. The formula is:

[0089] P 1 * =P 1 -[P 2 -P 2(t＝0) ]×a;

[0090] Among them, P * 1 is the converted vascular pressure at measurement position 1 (i.e., point G), P 1 and P 2 are the real-time vascular pressure collected at point G and point H, P 2(t＝0) is the initial blood vessel pressure collected at measurement position 2 (i.e., point H), a is the pressure transmission coefficient, and in this embodiment, a=0.8;

[0091] S3-2: Based on the final vascular pressure, initial vascular pressure and converted vascular pressure obtained in steps S1, S2 and S3-1, characterize the degree of vascular embolism, and the formula is:

[0092]

[0093] Where F(t) is the degree of vascular embolism characterized by local arterial pressure, P1(t＝0) is the initial vascular pressure collected at point G, P Fin is the final vascular pressure collected in step S1.

[0094] S3-3: When the degree of vascular embolism represented by the formula in step S3-2 is greater than or equal to 95%, it is determined that the embolism endpoint has been reached, the drug injection is stopped, and the operation is terminated.

[0095] Example 2

[0096] Taking liver embolization surgery as an example, the relative positions of the lesions and blood vessels are as follows: Figure 5 As shown,

[0097] Blood vessel 5-1 is the abdominal aorta, blood vessel 5-2 is the hepatic aorta, blood vessel 5-3 is the primary branch of the hepatic aorta, blood vessel 5-4 is the secondary branch of the hepatic aorta, and blood vessel 5-5 is the blood supply vessel for the lesion; shaded area B1 represents the liver, and shaded area B2 represents the lesion.

[0098] The device proposed by the present invention is used to evaluate the degree of vascular embolism, including the following steps:

[0099] S1: Pretreatment is performed before the operation officially begins to simulate the state of reaching the embolization endpoint during interventional embolization surgery and collect the final vascular pressure;

[0100] Obtaining the final vascular pressure after pretreatment includes the following steps;

[0101] S1-1: delivering the balloon catheter 6-1 and the pressure measuring catheter 6-2 together through the abdominal aorta to the G point;

[0102] The relative positions of the catheters and the specific position of the G point are as follows: Figure 6 As shown,

[0103] The solid line 6-1 represents the balloon catheter, and the dotted line 6-2 represents the pressure measuring catheter. The front end of the pressure measuring catheter should be located at point G. The blood vessel at point G is the blood vessel supplying the lesion, which is the third-order branch blood vessel of the hepatic aorta in this example.

[0104] S1-2: After stabilization, the balloon catheter is inflated to simulate the effect of drug injection on blood vessels during interventional embolization surgery;

[0105] S1-3: DSA is used to determine that when the blood vessels supplying the lesion are completely blocked by the balloon catheter, blood flow cannot pass through and subsequent blood vessels cannot be displayed, marking the end point of embolization. The mean blood vessel pressure at point G is collected using a pressure measurement catheter and defined as the final blood vessel pressure.

[0106] S2: During the operation, the initial vascular pressure is collected before the drug injection, and the drug is injected after the collection is completed. The real-time vascular pressure is collected during the drug injection;

[0107] Pressure acquisition during surgery includes the following steps:

[0108] S2-1: Deliver the pressure measurement catheter 7-1 to point H through the abdominal aorta, and deliver the drug injection catheter 7-2 and the pressure measurement catheter 7-3 to the lesion area, i.e. point G, through the abdominal aorta;

[0109] The relative positions of the catheters and the specific positions of the G point and the H point are as follows: Figure 7 As shown:

[0110] Among them, the dotted lines 7-1 and 7-3 represent the pressure measurement catheter, and the solid line 6-2 represents the drug injection catheter; the G point is consistent with that described in step S1-1; the location of the H point is the branch of the abdominal aorta to the liver;

[0111] S2-2: After the catheter is inserted and stabilized, two pressure measuring catheters are used to collect the average blood vessel pressure at the location, which is defined as the initial blood vessel pressure;

[0112] S2-3: After the collection is completed, the drug injection is started. During the drug injection, two pressure measurement catheters are used to collect the average blood vessel pressure at the two locations, which is defined as the real-time blood vessel pressure;

[0113] The medication is injected as:

[0114] A mixed solution containing an embolic agent and a contrast agent is injected into the blood vessel through an injection catheter at an average rate of less than 0.5 mL / min;

[0115] Measure real-time vascular pressure as:

[0116] After each injection of 1 mL of the embolic agent mixture, two pressure measurement catheters were used to collect the mean blood vessel pressure at the corresponding location;

[0117] S3: Based on the final vascular pressure, initial vascular pressure and real-time vascular pressure obtained from S1 and S2, the degree of vascular embolism is comprehensively analyzed to assess whether the embolism endpoint has been reached.

[0118] The evaluation of whether the endpoint has been reached includes the following steps:

[0119] S3-1: Based on the initial vascular pressure and the real-time vascular pressure obtained in steps S1 and S2, the converted vascular pressure at point G is obtained. The formula is:

[0120] P 1 * =P 1 -[P 2 -P2(t＝0) ]×a;

[0121] Among them, P * 1 is the transduced vascular pressure at position 1, P 1 and P 2 are the real-time vascular pressure collected at point G and point H, P 2(t＝0) is the initial vascular pressure collected at measurement position 2, a is the pressure transmission coefficient;

[0122] In this embodiment, a=0.8;

[0123] S3-2: Based on the final vascular pressure, initial vascular pressure and converted vascular pressure obtained in steps S1, S2 and S3-1, characterize the degree of vascular embolism, and the formula is:

[0124]

[0125] Where F(t) is the degree of vascular embolism characterized by local arterial pressure, P 1(t＝0) is the initial vascular pressure collected at point G, P Fin is the final vascular pressure collected in step S1.

[0126] S3-3: When the degree of vascular embolism represented by the formula in step S3-2 is greater than or equal to 95%, it is determined that the embolism endpoint has been reached, the drug injection is stopped, and the operation is terminated.

[0127] The present invention can also be used in other vascular interventional embolization surgeries, such as interventional embolization treatment for liver tumors, etc., which are not listed here one by one.

[0128] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

[0129] Any matters not described in the present invention are applicable to the prior art.

Claims

1. A device for assessing the degree of embolism during vascular intervention based on local arterial pressure, the device comprising a measuring unit for measuring required data and a module for assessing the degree of embolism during vascular intervention; The vascular intervention embolism degree assessment module calculates the vascular intervention embolism degree according to the following formula: in, t is the time coefficient, which is set to 0 when the embolic agent is first injected and increases with the injection of the embolic agent. F(t) is the degree of vascular embolism characterized by local arterial pressure, which changes with the injection of the embolic agent; P 1(t＝0) P is the initial vascular pressure collected at the G point of the lesion supplying blood vessel before drug injection, Fin P is the final vascular pressure collected when the interventional embolization procedure reaches the embolization endpoint. * 1 is the converted vascular pressure at the G point of the blood supply vessel of the lesion; The converted vascular pressure P at the G point of the lesion supplying blood vessels * The calculation formula for 1 is: P1 * =P1-[P2-P 2(t＝0) ]×a; Among them, P1 and P2 are the real-time vascular pressures collected at point G of the blood supply vessel of the lesion and point H of the branch vessel of the abdominal aorta to the lesion organ, respectively. 2(t＝0) is the initial vascular pressure collected at point H before drug injection, a is the pressure transmission coefficient, which is a fixed value.

2. The device according to claim 1, characterized in that The device comprises: A balloon catheter used to simulate the effects of embolic agents on blood vessels during interventional embolization procedures; Two pressure measurement catheters, which are 4Fr catheters with hollow interiors, measure pressure by drawing blood out; A main body, used to install a balloon catheter and two pressure measuring catheters, with a display screen capable of displaying the values ​​collected by the pressure measuring catheters and the real-time degree of vascular embolism; The balloon catheter and two pressure measuring catheters constitute a measuring unit, and a vascular intervention embolism degree assessment module is loaded in the main body.

3. The device according to claim 1, characterized in that When F(t) is greater than or equal to 95%, it is defined that the embolization endpoint has been reached.

4. The device according to claim 1, characterized in that The method for using the device comprises the following steps: S1: Pretreatment is performed before the operation officially begins to simulate the state of the blood vessels when the interventional embolization operation reaches the embolization end point, and the final blood vessel pressure P is collected. Fin ; S2: During the operation, the initial vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected before the drug is injected. After the collection, the drug is injected, and the real-time vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected at the same time; S3: Final blood vessel pressure P obtained based on steps S1 and S2 Fin , initial vascular pressure and real-time vascular pressure, comprehensively analyze the degree of vascular embolism, and evaluate whether the embolism endpoint has been reached.

5. The device according to claim 4, characterized in that: The specific implementation method of step S1 comprises the following steps: S1-1: Deliver the balloon catheter together with any one of the pressure measurement catheters to the G point of the blood vessel supplying the lesion; S1-2: After stabilization, the balloon catheter is inflated to gradually enlarge the balloon until it completely blocks the blood vessel, simulating the effect of drug injection on blood flow during interventional embolization surgery; S1-3: DSA is used to determine that when the balloon catheter completely blocks the blood vessel, blood flow cannot pass through and subsequent blood vessels cannot be displayed, marking the end point of embolism. The pressure measurement catheter is used to collect the average vascular pressure at point G at this time, which is defined as the final vascular pressure.

6. The device according to claim 4, characterized in that: The specific implementation method of step S2 includes the following steps: S2-1: Deliver the drug injection catheter to the blood vessel supplying the lesion, insert the first pressure measurement catheter into point G, and insert the second pressure measurement catheter into point H at the branch vessel of the abdominal aorta to the lesion organ; S2-2: When each catheter reaches the target position and stabilizes, two pressure measurement catheters are used to collect the average blood vessel pressure at the location, which is defined as the initial blood vessel pressure; S2-3: After the measurement is completed, the drug injection is started. During the drug injection, two pressure measurement catheters are used to collect the average blood vessel pressure at the two locations, which is defined as the real-time blood vessel pressure.

7. The device according to claim 1, characterized in that: The pressure transfer coefficient is the pressure fluctuation loss from point H to point G; the value range of a is [0.75, 0.85].

8. The device according to claim 1, characterized in that: The device is used in kidney embolization surgery, liver embolization surgery, and interventional embolization treatment of liver tumors.

9. A method for assessing vascular intervention embolism endpoint based on local arterial pressure, characterized in that: The evaluation method comprises the following steps: S1: Pretreatment is performed before the operation officially begins to simulate the state of the blood vessels when the interventional embolization operation reaches the embolization end point, and the final blood vessel pressure P is collected. Fin ; S2: During the operation, the initial vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected before the drug is injected. After the collection, the drug is injected, and the real-time vascular pressures at point G of the blood supply vessel of the lesion and point H of the branch vessel from the abdominal aorta to the lesion organ are collected at the same time; S3: Final blood vessel pressure P obtained based on steps S1 and S2 Fin , initial vascular pressure and real-time vascular pressure, comprehensively analyze the degree of vascular embolism, and evaluate whether the embolism endpoint has been reached.

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