A device for assessing embolization degree in vascular intervention based on local arterial pressure

Abstract

The application is a kind of device for evaluating the degree of vascular intervention embolization based on local arterial pressure, which comprises a module for evaluating the degree of vascular intervention embolization; the module for evaluating the degree of vascular intervention embolization calculates the degree of vascular intervention embolization according to the following formula: wherein t is a time coefficient, which is 0 when the embolic agent starts to be injected, and F (t) is the degree of vascular embolization characterized based on local arterial pressure, which changes with the injection of embolic agent; P 1(t＝0) P is the initial vascular pressure collected at G point of the blood vessel before drug injection, Fin P is the final vascular pressure collected when the simulation intervention embolization operation reaches the embolization end point; P * 1 is the converted vascular pressure of G point. The application realizes the evaluation of the embolization end point in the vascular intervention embolization operation, can more objectively and accurately evaluate whether the embolization end point is reached, and can effectively reduce the radiation damage to patients and medical staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of interventional radiology arterial vascular intervention embolization, in particular to a vascular intervention embolization degree evaluation device based on local arterial blood pressure. BACKGROUND

[0002] Interventional embolization is a technique that blocks blood flow by injecting embolic agents into blood vessels to achieve the purpose of treating lesions. In the prior art, the embolization endpoint usually relies on imaging methods, such as observing the blood flow state through digital subtraction angiography (DSA) and determining whether the embolization endpoint is reached. However, this image-based evaluation method has strong subjectivity and is easily influenced by the experience and operating environment of the doctor. In addition, frequent imaging operations increase the radiation exposure of patients and medical staff, posing a great health risk. Therefore, there is an urgent need for a more objective and accurate embolization endpoint evaluation device to reduce uncertainty during surgery and improve treatment safety.

[0003] Chinese patent CN114880960A proposes a method for evaluating the dose and injection position of radioembolization based on fluid dynamics, but the image preprocessing-based method has a too cumbersome process and a complex algorithm, which cannot guarantee the real-time evaluation, making it difficult to synchronize with the surgery and having poor practicality. Chinese patent CN113192554B proposes a dose optimization method for a radioactive particle interventional surgery robot, which realizes optimal dose planning through dose estimation, but the surgical process is sudden and unpredictable, and this method is only suitable for preoperative drug dose estimation and cannot achieve real-time monitoring for interventional embolization surgery. SUMMARY

[0004] In view of the urgent need for quantitative and standardized embolization endpoint determination methods in current vascular intervention embolization surgery, the technical problem to be solved by the present application is to objectively and accurately evaluate whether the vascular intervention embolization surgery has reached the embolization endpoint.

[0005] To achieve the above-mentioned purposes, the technical solution adopted by the present application is:

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

[0007] The vascular intervention embolization degree evaluation module calculates the vascular intervention embolization degree according to the following formula,

[0008]

[0009] Wherein, t is time coefficient, 0 is defined as the time when embolic agent starts to inject, F(t) is the degree of vascular embolism characterized by local arterial pressure, which changes with the injection of embolic agent, P 1(t＝0) P0 is the initial vascular pressure collected at G point before drug injection, Fin P is the final vascular pressure collected when the simulation of interventional embolization surgery reaches the embolization endpoint; * P1 is the conversion vascular pressure at G point,

[0010] P1 is the conversion vascular pressure at G point, * 1, the formula is:

[0011] P1 * = P1-[P2-P 2(t＝0) ]×a;

[0012] Wherein, P1 and P2 are real-time vascular pressures collected at G point of blood supply vessel of lesion and H point of branch vessel of abdominal aorta to lesion organ respectively, P 2(t＝0) P0 is the initial vascular pressure collected at H point before drug injection, and a is the pressure transmission coefficient, which is a certain numerical value.

[0013] Further, the device comprises:

[0014] A balloon catheter for simulating the effect of embolic agent on blood vessels during interventional embolization surgery;

[0015] Two pressure measuring catheters, which are ordinary 4Fr catheters with hollow interiors, measure pressure by leading blood out;

[0016] A main body for mounting the balloon catheter and the two pressure measuring catheters, which has 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 the two pressure measuring catheters constitute a measuring unit, and the main body is loaded with a vascular interventional embolism degree evaluation module.

[0018] Further, when F(t) is greater than or equal to 95%, it is defined as reaching the embolization endpoint.

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

[0020] S1: Pretreatment before the formal start of the operation, simulate the state of blood vessels when the interventional embolization surgery reaches the embolization endpoint, and collect the final vascular pressure P Fin ;

[0021] S2: During the operation, the initial blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta to the diseased organ is collected before drug injection, and the real-time blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta to the diseased organ is collected after drug injection and at the same time of drug injection;

[0022] S3: Based on the final blood vessel pressure P Fin , the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the degree of vascular embolization is comprehensively analyzed, and whether the embolization endpoint is reached is evaluated.

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

[0024] S1: Before the formal start of the operation, pretreatment is performed, the state of the blood vessel when the interventional embolization operation reaches the embolization endpoint is simulated, and the final blood vessel pressure P Fin is collected.

[0025] S2: During the operation, the initial blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta to the diseased organ is collected before drug injection, and the real-time blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta to the diseased organ is collected after drug injection and at the same time of drug injection;

[0026] S3: Based on the final blood vessel pressure P Fin , the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the degree of vascular embolization is comprehensively analyzed, and whether the embolization endpoint is reached is evaluated.

[0027] Further, the specific implementation method of step S1 comprises the following steps:

[0028] S1-1: Deliver the balloon catheter together with any pressure measuring catheter to the G point of the lesion blood supply vessel;

[0029] The G point is located at the lesion blood supply vessel;

[0030] S1-2: After stabilization, inflate the balloon catheter to gradually increase the balloon to completely block the blood vessel, simulating the effect of drug injection on blood flow during interventional embolization surgery;

[0031] S1-3: Use DSA to determine when the balloon catheter completely blocks the blood vessel, the blood flow cannot pass through, and the subsequent blood vessels cannot be displayed, indicating that the embolization endpoint is reached. The average pressure of the blood vessel at the G point at this time is collected by the pressure measuring catheter and defined as the final blood vessel pressure.

[0032] Further, the specific implementation method of step S2 comprises the following steps:

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

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

[0035] S2-2: When each catheter reaches the target position and is stable, the average pressure of the blood vessel at the position is collected using the two pressure measuring catheters, which is defined as the initial blood vessel pressure;

[0036] S2-3: After the measurement is completed, drug injection is started, and the average pressure of the blood vessel at the position of the two pressure measuring catheters is collected at the same time, which is defined as the real-time blood vessel pressure.

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

[0038] S3-1: Based on the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the conversion blood vessel pressure at the G point is obtained, and the formula is:

[0039] P1 * =P1-[P2-P 2(t＝0) ]×a;

[0040] Wherein, P * 1 is the conversion blood vessel pressure at the G point, P1 and P2 are the real-time blood vessel pressures collected at the G point and the H point respectively, P 2(t＝0) is the initial blood vessel pressure collected at the H point, and a is the pressure transmission coefficient;

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

[0042] S3-2: Based on the final blood vessel pressure, the initial blood vessel pressure and the conversion blood vessel pressure obtained in steps S1, S2 and S3-1, the blood vessel embolization degree is represented by using the blood vessel intervention embolization degree evaluation module, and the formula is:

[0043]

[0044] Wherein, F(t) is the blood vessel embolization degree represented based on the local arterial pressure, P 1(t＝0) is the initial blood vessel pressure collected at the G point, and P Fin is the final blood vessel pressure collected in step S1.

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

[0046] Further, theoretically, the formula in step S3-2 calculates a result of 100% as the embolization end point, and considering that the pressure can be affected by compensation, a suitable safety factor should be considered to avoid excessive dosage of the embolic agent, preferably, the safety factor is 0.95, that is, when the degree of vascular embolization represented by the formula in step S3-2 is greater than or equal to 95%, it is determined that the embolization end point is reached.

[0047] Compared with the prior art, the beneficial effects of the present application are:

[0048] The present application realizes the evaluation of the embolization end point in the vascular interventional embolization operation based on the local arterial pressure, can more objectively and accurately evaluate whether the embolization end point is reached, and can reduce the use of DSA in the vascular interventional embolization operation, thereby effectively reducing the radiation damage to the patients and medical staff. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 A schematic diagram of an embodiment of a device for evaluating the degree of vascular interventional embolization based on local arterial pressure;

[0050] Figure 2 A schematic diagram of the relative positions of the lesions in the kidney embolization operation of embodiment 1;

[0051] Figure 3 A schematic diagram of the relative positions of the catheters during pretreatment in the kidney embolization operation of embodiment 1;

[0052] Figure 4 A schematic diagram of the relative positions of the catheters in the kidney embolization operation of embodiment 1;

[0053] Figure 5 A schematic diagram of the relative positions of the lesions in the liver embolization operation of embodiment 2;

[0054] Figure 6 A schematic diagram of the relative positions of the catheters during pretreatment in the liver embolization operation of embodiment 2;

[0055] Figure 7 A schematic diagram of the relative positions of the catheters in the liver embolization operation of embodiment 2;

[0056] Figure 8 A schematic diagram of the flow of the method for evaluating the embolization end point of vascular interventional embolization based on local arterial pressure; DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, i.e., the described specific embodiments are only a part of the embodiments, but not all the specific embodiments. The various parts of the specific embodiments of the present application described and shown in the drawings herein can be designed in various different configurations, and the present application can also have other embodiments,

[0058] Therefore, the detailed description of the specific embodiments of the present application provided below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the specific embodiments of the present application, all other specific embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0059] In order to further understand the content, characteristics and functions of the present application, the following specific embodiments are listed, and the present application is described in conjunction with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 6 、 Figure 8 Detailed description:

[0060] A blood vessel intervention embolism degree evaluation device based on local arterial pressure, as shown in Figure 1 , comprises:

[0061] A balloon catheter 001 for simulating the effect of embolic agents on blood vessels during an intervention embolism operation;

[0062] Two pressure measuring catheters 002, which are ordinary 4Fr catheters with hollow interiors, measure pressure by leading blood out;

[0063] A main body 003 for mounting various catheters, which has a display screen 004 for displaying the values measured by the measuring catheters and the real-time blood vessel embolism degree.

[0064] Embodiment 1:

[0065] Taking a kidney embolism operation as a specific embodiment, the relative positions of the lesion and various blood vessels are as shown in Figure 2 , wherein,

[0066] Blood vessel 2-1 is the abdominal aorta, blood vessel 2-2 is the renal aorta, blood vessel 2-3 is a first branch of the renal aorta, and blood vessel 2-4 is a second branch of the renal aorta and is also a blood supply vessel of the lesion; the shadow area A1 represents the kidney, and the shadow area A2 represents the lesion.

[0067] The device for evaluating the embolism degree of blood vessels based on the application comprises the following steps:

[0068] S1: Pretreatment before the formal start of the operation, simulate the state of reaching the embolism end point in the interventional embolism operation, and collect the final blood vessel pressure P Fin ;

[0069] The final blood vessel pressure obtained through the pretreatment comprises the following steps:

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

[0071] The relative positions of the catheters and the specific position of the G point are shown in Figure 2 , wherein

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

[0073] S1-2: After being stable, inflate the balloon catheter to simulate the influence of drug injection on the blood vessel in the interventional embolism operation;

[0074] S1-3: Use DSA to determine when the lesion blood supply vessel is completely blocked by the balloon catheter, the blood flow cannot pass through, and the subsequent blood vessels cannot be displayed, which marks the reaching of the embolism end point, and the average pressure of the blood vessel at the G point at this time is collected by the pressure measuring catheter, which is defined as the final blood vessel pressure;

[0075] S2: During the operation, collect the initial blood vessel pressure before drug injection, perform drug injection after the collection is completed, and collect the real-time blood vessel pressure at the same time of drug injection.

[0076] The pressure collection during the operation comprises the following steps:

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

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

[0079] , wherein the dashed line 4-1 and the dashed line 4-3 represent the pressure measuring catheter, and the solid line 4-2 represents the drug injection catheter; the G point is consistent with that described in step S1-1; the H point is located at the branch blood vessel of the abdominal aorta to the kidney;

[0080] S2-2: After the catheters are inserted and stable, collect the average pressure of the blood vessel at the position by using the two pressure measuring catheters, which is defined as the initial blood vessel pressure;

[0081] S2-3: After the collection is completed, drug injection is started, and the average pressure of the blood vessels at the positions of the two pressure measuring catheters is collected at the same time as the drug injection, which is defined as the real-time blood vessel pressure;

[0082] The drug injection is:

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

[0084] The real-time blood vessel pressure is measured as:

[0085] After each injection of 1 mL of the mixed solution of the embolic agent and the contrast agent, the average pressure of the blood vessels at the corresponding positions is collected by using the two pressure measuring catheters.

[0086] S3: Based on the final blood vessel pressure, the initial blood vessel pressure and the real-time blood vessel pressure obtained in S1 and S2, the degree of vascular embolization is comprehensively analyzed, and whether the embolization endpoint is reached is evaluated.

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

[0088] S3-1: Based on the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the conversion blood vessel pressure at point G is obtained, and the formula is:

[0089] P1 * =P1-[P2-P 2(t＝0) ]×a;

[0090] Wherein, P * 1 is the conversion blood vessel pressure at measuring position 1 (i.e. point G), P1 and P2 are the real-time blood vessel pressures collected at points G and H respectively, P 2(t＝0) is the initial blood vessel pressure collected at measuring position 2 (i.e. point H), and a is the pressure transmission coefficient, which is taken as a = 0.8 in this embodiment;

[0091] S3-2: Based on the final blood vessel pressure, the initial blood vessel pressure and the conversion blood vessel pressure obtained in steps S1, S2 and S3-1, the degree of vascular embolization is characterized, and the formula is:

[0092]

[0093] Wherein, F(t) is the degree of vascular embolization characterized based on the local arterial pressure, P 1(t＝0) is the initial blood vessel pressure collected at point G, and P Fin is the final blood vessel pressure collected in step S1.

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

[0095] Embodiment 2

[0096] Taking a liver embolism operation as an example, the relative positions of the lesions and the blood vessels are shown in FIG. 1, wherein, Figure 5

[0097] The blood vessel 5-1 is an abdominal aorta, the blood vessel 5-2 is a hepatic aorta, the blood vessel 5-3 is a first-order branch of the hepatic aorta, the blood vessel 5-4 is a second-order branch of the hepatic aorta, and the blood vessel 5-5 is a lesion blood supply vessel; the shadow area B1 represents a liver, and the shadow area B2 represents a lesion.

[0098] The device for evaluating the degree of vascular embolism based on the present application comprises the following steps:

[0099] S1: Before the formal start of the operation, a pretreatment is performed to simulate the state of reaching the embolism end point in the interventional embolism operation, and the final blood vessel pressure is collected;

[0100] The final blood vessel pressure obtained through the pretreatment comprises the following steps:

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

[0102] The relative positions of the catheters and the specific position of the G point are shown in FIG. 2, wherein, Figure 6

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

[0104] S1-2: After being stabilized, the balloon catheter is inflated to simulate the influence of the drug injection on the blood vessel in the interventional embolism operation;

[0105] S1-3: DSA is used for judgment. When the lesion blood supply vessel is completely blocked by the balloon catheter, the blood flow cannot pass through, and the subsequent blood vessels cannot be displayed, which indicates that the embolism end point is reached. The average pressure of the blood vessel at the G point at this time is collected by using the pressure measuring catheter, and is defined as the final blood vessel pressure;

[0106] S2: During the operation, the initial blood vessel pressure is collected before the drug injection, the drug injection is performed after the collection is completed, and the real-time blood vessel pressure is collected at the same time as the drug injection;

[0107] The pressure collection during the operation comprises the following steps:

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

[0109] The relative positions of the catheters and the specific positions of G point and H point are shown in FIG. 2. Figure 7

[0110] Wherein, the dashed line 7-1 and the dashed line 7-3 represent the pressure measurement catheters, and the solid line 6-2 represents the injection catheter; G point is consistent with that in step S1-1; H point is located at the branch of the abdominal aorta to the liver;

[0111] S2-2: After the catheters are inserted and stabilized, the average blood vessel pressure at the positions of the two pressure measurement catheters is collected, which is defined as the initial blood vessel pressure;

[0112] S2-3: After the collection is completed, the drug injection is started, and the average blood vessel pressure at the positions of the two pressure measurement catheters is collected at the same time, which is defined as the real-time blood vessel pressure;

[0113] The drug injection is:

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

[0115] The real-time blood vessel pressure is measured as:

[0116] After each injection of 1 mL of embolic agent mixed solution, the average blood vessel pressure at the corresponding positions of the two pressure measurement catheters is collected;

[0117] S3: Based on the final blood vessel pressure, the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the degree of blood vessel embolization is comprehensively analyzed, and whether the embolization endpoint is reached is evaluated.

[0118] Whether the endpoint is reached includes the following steps:

[0119] S3-1: Based on the initial blood vessel pressure and the real-time blood vessel pressure obtained in steps S1 and S2, the conversion blood vessel pressure at G point is obtained, and the formula is:

[0120] P1 * = P1- [P2-P 2(t＝0) ] × a;

[0121] Wherein, P * 1 is the conversion blood vessel pressure at measurement position 1, P1 and P2 are the real-time blood vessel pressures collected at G point and H point respectively, P 2(t＝0) is the initial blood vessel pressure collected at measurement position 2, and a is the pressure transmission coefficient;

[0122] ​In the present embodiment, a=0.8;

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

[0124]

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

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

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

[0128] The above disclosed is only the preferred embodiment of the present application, of course, cannot be limited by this to limit the scope of the present application, those skilled in the art can understand that the implementation of all or part of the above-mentioned embodiments, and according to the equivalent changes of the claims of the present application, still belongs to the scope covered by the present application.

[0129] The present application is not described in the prior art.

Claims

1. A device for evaluating embolization degree of vascular intervention based on local arterial pressure, comprising a measuring unit for measuring required data and an embolization degree evaluation module of vascular intervention; The embolization degree evaluation module of vascular intervention calculates the embolization degree of vascular intervention according to the following formula, wherein t is a time coefficient, which is defined as 0 when the embolic agent starts to be injected, and increases with the injection of the embolic agent; F(t) is the degree of vessel embolization characterized based on the local arterial pressure, which changes with the injection of the embolic agent; P 1(t＝0) P0 is the initial blood vessel pressure collected at the G point of the lesion feeding blood vessel before the drug injection, Fin Pend is the final blood vessel pressure collected at the G point when the simulation of the interventional embolization operation reaches the embolization endpoint; and * P1 is the conversion blood vessel pressure of the G point of the lesion feeding blood vessel. The conversion vessel pressure P at the G-point of the blood vessel supplying the lesion * The calculation formula of 1 is: P1 * = P1 - [P2 - P 2(t＝0) ] x a; wherein P1 and P2 are the real-time blood vessel pressure collected at G point of blood vessel supplying the lesion and H point of branch blood vessel of abdominal aorta to the lesion organ, respectively, P0 is the initial blood vessel pressure collected at H point before drug injection, and a is the pressure transmission coefficient which is a certain value. 2(t＝0) is the initial blood vessel pressure collected at H point before drug injection, and a is the pressure transmission coefficient which is a certain value.

2. The apparatus of claim 1, wherein, The device comprises: a balloon catheter for simulating the effect of embolic agent on blood vessels during embolization surgery; two pressure measuring catheters, which are 4Fr catheters with hollow interiors, and measure pressure by leading blood out; a main body for mounting the balloon catheter and the two pressure measuring catheters, and having a display screen capable of displaying the values collected by the pressure measuring catheters and the real-time embolization degree of blood vessels; The balloon catheter and the two pressure measuring catheters constitute the measuring unit, and the main body is loaded with the embolization degree evaluation module of vascular intervention.

3. The apparatus of claim 1, wherein, When F(t) is greater than or equal to 95%, it is defined that the embolization end point is reached.

4. The apparatus of claim 1, wherein, The method for using the device comprises the following steps: S1: Pretreatment before the formal start of the operation, simulate the state of the blood vessel when the interventional embolization operation reaches the end point of embolization, collect the final blood vessel pressure P Fin ; S2: During the surgery, collect the initial blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta to the diseased organ before drug injection, collect the real-time blood vessel pressure at the G point of the lesion blood supply vessel and the H point of the branch blood vessel of the abdominal aorta after drug injection; S3: Based on the final blood vessel pressure P obtained in steps S1, S2 Fin , initial blood vessel pressure and real-time blood vessel pressure, comprehensive analysis of the degree of vascular embolism, and evaluation of whether the embolism endpoint is reached.

5. The apparatus of claim 4, wherein, The specific implementation method of step S1 comprises the following steps: S1-1: Deliver the balloon catheter together with any one of the pressure measuring catheters to the G point of the lesion blood supply vessel; S1-2: After stabilization, inflate the balloon catheter to gradually increase the balloon to completely block the blood vessel, simulating the effect of drug injection on blood flow during embolization surgery; S1-3: Use DSA to determine when the balloon catheter completely blocks the blood vessel, the blood flow cannot pass through, and the subsequent blood vessels cannot be displayed, indicating that the embolization end point is reached, and the average blood vessel pressure at the G point at this time is collected by the pressure measuring catheter, which is defined as the final blood vessel pressure.

6. The apparatus of claim 4 wherein, The specific implementation method of step S2 comprises the following steps: S2-1: Deliver the drug injection catheter to the lesion blood supply vessel, insert the first pressure measuring catheter into the G point, and insert the second pressure measuring catheter into the H point of the branch blood vessel of the abdominal aorta to the diseased organ; S2-2: After the catheters reach the target positions and stabilize, collect the average blood vessel pressure at the positions by the two pressure measuring catheters, which is defined as the initial blood vessel pressure; S2-3: After the measurement is completed, start drug injection, and collect the average blood vessel pressure at the positions by the two pressure measuring catheters at the same time, which is defined as the real-time blood vessel pressure.

7. The apparatus of claim 1, wherein The pressure transfer coefficient is the pressure fluctuation loss from the H point to the G point; the value range of a is [0.75, 0.85].

8. The apparatus of claim 1, wherein The device is used in renal embolization surgery, liver embolization surgery, and interventional embolization treatment of liver tumors.

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