Motor catheter assisted carotid endarterectomy operation system

Abstract

The invention relates to the technical field of vascular intervention, in particular to a motor catheter assisted carotid endarterectomy system which comprises a motor catheter, a balloon guide catheter, a 45-degree guide catheter, a brain protection umbrella and a peripheral balloon catheter. By means of the combined arrangement of the motor catheter, the balloon guide catheter, the 45-degree guide catheter, the brain protection umbrella and the peripheral balloon catheter, the problem that at present, a patient cannot tolerate general anesthesia or refuse to accept a traditional incision operation, so that carotid endarterectomy cannot be conducted is effectively solved; and meanwhile, the problems of large trauma and long wound healing time of the conventional carotid endarterectomy are solved, and the problem that a combined operating room needs to be built in order to reduce the surgical risk and facilitate the surgical operation at present is perfectly solved.

Description

Technical Field

[0001] The present invention relates to the field of vascular intervention technology, and in particular to a motor catheter-assisted carotid endarterectomy surgery system. Background Art

[0002] Studies have shown that carotid stenting is not inferior to traditional carotid endarterectomy in the long-term prognosis of carotid stenosis; at the same time, carotid stenting has the advantages of less surgical trauma and faster postoperative recovery. However, the disadvantage of carotid stenting is that it requires long-term antiplatelet aggregation therapy after surgery, and some patients may experience severe gastrointestinal symptoms or even severe gastrointestinal bleeding after long-term use of antiplatelet aggregation drugs, which directly endangers the patient's life. Therefore, for patients with carotid stenosis who already have symptoms of gastrointestinal ulcers, long-term use of antiplatelet aggregation is a clear contraindication. At the same time, with the increase in people's understanding of medical expertise in recent years, people's rejection of intravascular foreign body implantation has increased day by day, and the concept of "intervention without implantation" has grown in the hearts of the people. Therefore, in clinical practice, for patients who have concerns about stent implantation and have clear contraindications to the use of antiplatelet drugs, carotid endarterectomy seems to be the only surgical option for such patients.

[0003] However, carotid endarterectomy is not perfect in current clinical practice. First, most of the surgical operations need to be performed under general anesthesia. Among patients with indications for carotid endarterectomy, most patients often have serious underlying medical diseases, which leads to a huge increase in the risk of general anesthesia for these patients, and even serious anesthesia and surgery-related complications after surgery. Secondly, the current traditional carotid endarterectomy is traumatic and takes a long time to heal. Especially for patients with diabetes and poor blood sugar control, the wound healing time is longer, and even the wound cannot heal for a long time. Finally, there is the aesthetic problem of wound scars after traditional carotid endarterectomy. At present, the incidence of cerebrovascular disease is getting younger and younger. Young patients, especially female patients, pay more attention to the aesthetic problem of wound scars. Although medical cosmetic methods have the opportunity to perform post-processing, subsequent related surgeries significantly increase the patient's treatment costs and also require patients to bear more risks related to cosmetic surgery. For all these reasons, many patients with indications for carotid endarterectomy are discouraged and stay away from traditional carotid endarterectomy.

[0004] The purpose of carotid endarterectomy and carotid stent implantation is to restore the inner diameter of the blood vessel as much as possible to promote perfusion of distal vascular tissue. Carotid endarterectomy is to remove as much or completely remove the intimal plaque as possible to reduce the intravascular plaque load and avoid vascular stenosis and vascular plaque shedding leading to distal vascular embolism; carotid stenting is to compress the stenotic plaque or unstable plaque with the stent to restore the blood vessel diameter and avoid the detachment of unstable plaque leading to distal embolism. At present, there are also clinical studies on the use of simple balloons or drug-assisted balloons to expand the carotid stenotic plaques. However, the data results are not ideal. The risk of subsequent plaque shedding and distal vascular embolism is greatly increased. At the same time, there is a risk of continued growth of vascular plaques and progressive aggravation of vascular stenosis. There are even cases where the vascular plaque is torn after balloon expansion, and the patient is forced to switch to endarterectomy or stent implantation. Studies have shown that when the carotid artery stenosis is less than 50% of the blood vessel diameter, the patient may have no corresponding clinical symptoms for a long time and the condition may be stable for a long time. The prerequisite for clinical patients to accept blood vessel stenosis of less than 50% is that the stenotic site is a stable plaque. However, there is currently a lack of surgical instruments and methods to eliminate stenotic plaques or unstable plaques under minimally invasive conditions.

[0005] In summary, there are obvious objective shortcomings in the current carotid endarterectomy, stent implantation, simple balloon angioplasty and drug-eluting balloon angioplasty. These objective deficiencies invisibly increase the patient's surgery-related risks, and may ultimately affect the surgical results and restrict the healthy development of medicine. Summary of the invention

[0006] The purpose of the present invention is to provide a motor catheter-assisted carotid endarterectomy surgery system, aiming to solve the objective problem that carotid endarterectomy cannot be performed due to factors such as patients being unable to tolerate general anesthesia or having contraindications to traditional carotid endarterectomy surgery.

[0007] To achieve the above-mentioned purpose, the present invention provides a motor catheter-assisted carotid endarterectomy surgery system, comprising a motor catheter, a balloon guide catheter, a 45° angle guide catheter, a brain protection umbrella and a peripheral balloon catheter; the 45° angle guide catheter is sleeved on the outside of the motor catheter, the brain protection umbrella is installed at the front end of the motor catheter in a released state, the guide wire of the brain protection umbrella is placed in the lumen of the motor catheter, the balloon guide catheter has the peripheral balloon catheter built in, the peripheral balloon catheter is installed on one side of the 45° angle guide catheter in a working state, and the balloon guide catheter is installed in parallel on one side of the 45° angle guide catheter.

[0008] Wherein, the motor catheter comprises a motor catheter body, a blocking balloon, multiple groups of atherectomy motor groups, a motor group coordination control unit, a blocking balloon liquid delivery microcatheter and a motor group power transmission wire; the blocking balloon is installed on the front end catheter outer wall of the motor catheter body, multiple groups of atherectomy motor groups are adjacent to each other and are all installed on the motor catheter body, the motor group coordination control unit is installed at the proximal end of the atherectomy motor group, and is connected to the multiple groups of atherectomy motor groups through power transmission wires, the distal end of the blocking balloon liquid delivery microcatheter is buried in the tube wall of the motor catheter body, and the proximal end of the blocking balloon liquid delivery microcatheter is free from the tube wall of the motor catheter body to form an independent liquid delivery microcatheter; the distal end of the power transmission wire of the atherectomy motor group is buried in the proximal tube wall of the motor catheter body, and the proximal end of the power transmission wire of the atherectomy motor group is free from the proximal tube wall of the motor catheter body to form two power transmission wires.

[0009] The athermal motor group includes an inner motor stator and an outer motor rotor. The inner motor stator is designed as a hollow pipe, and the hollow pipe design constitutes a partial segment of the annular lumen of the motor catheter body. The inner motor stator contains multiple groups of north and south pole magnetic strips, and the multiple groups of north and south pole magnetic strips are parallel to the motor catheter body. The sides of the north and south pole magnetic strips are wound with energized coils. All adjacent energized coils are electrically connected in parallel and are electrically connected to the inner stator power transmission wire through the motor group coordination control unit; the outer motor rotor is sleeved on the outer periphery of the inner motor stator, and the surface of the outer motor rotor has multiple athermal nails and multiple athermal grooves.

[0010] Wherein, the atherectomy motor group has a partition anti-friction plate, and the partition anti-friction plate is installed between the adjacent atherectomy motor groups.

[0011] Wherein, the 45° angle guide catheter is set as a 45° pre-molded bend at a position 5 cm away from the catheter head end.

[0012] The motor catheter assisted carotid endarterectomy surgical system of the present invention comprises a motor catheter, a balloon guide catheter, a 45° angle guide catheter, a brain protection umbrella and a peripheral balloon catheter. When performing carotid endarterectomy, firstly, the left and right femoral arteries (8F short sheath) and the right radial artery (6F long sheath) are placed in the surgical patient, and then the assembled motor catheter and the 45° angle guide catheter (the motor catheter is sheathed in the 45° angle guide catheter) are inserted through the right femoral artery sheath and delivered to the proximal end of the target stenotic blood vessel under the guidance of the guide wire. Then, the balloon guide catheter is inserted through the left femoral artery sheath and the peripheral balloon catheter is placed inside the catheter to reach the end of the target common carotid artery. The pressurized balloon guide catheter balloon is used to block the blood flow in the proximal blood vessel, and then the brain umbrella system is delivered through the motor catheter to reach the distal end of the target stenotic blood vessel segment and release the brain umbrella (or after the pressurized balloon guide catheter balloon is used to block the blood flow in the proximal blood vessel, a microguidewire and a peripheral balloon catheter are delivered through the motor catheter to pre-expand the target stenotic blood vessel segment to assist the brain umbrella to pass through the stenotic blood vessel segment, reach the distal blood vessel site and release it). After the brain umbrella works normally, the balloon guide catheter balloon pressure is released, and then the stenotic segment of the target blood vessel is pre-expanded (to assist the motor catheter motor group to reach the stenotic blood vessel area). After the motor catheter reaches the target blood vessel area, the proximal pipeline of the motor catheter together with the brain umbrella guide wire are retrogradely delivered from the long sheath of the right radial artery (to achieve a temporary channel for the right radial artery to supply blood to the internal carotid artery system and prevent the occurrence of intracranial ischemia in patients due to insufficient or no intracranial perfusion during the surgical operation). Then pressurize the occluding balloon to achieve distal forward blood flow occlusion, then start the balloon guide catheter balloon again to block the proximal blood flow, and start the peripheral balloon catheter to block the external carotid artery reverse blood flow (thus achieving a closed surgical operation area with no proximal forward blood flow, no distal forward or reverse blood flow, and no side branch forward or reverse blood flow). Start the surgical system test: positive pressure infusion fluid flows into the surgical area through the 45° angle guide catheter and flows out through the balloon guide catheter under negative pressure; the clear water flow of the system indicates that the blood flow of the distal, proximal and branch vessels of the system is completely blocked. You can start to connect the external power supply to perform motor catheter carotid intimal atherectomy. During the operation, you can control the motor catheter to atherectomize the target stenotic blood vessels at multiple angles by manipulating the 45° angle guide catheter. The atherectomy plaque residues and the positive pressure infusion fluid are sucked out of the body by negative pressure through the balloon guide catheter. During the operation, the 45° angle guide catheter can be used for angiography to determine the depth of atherectomy and the progress of the operation, and it is confirmed that the atherectomy meets the surgical expectations. First, the balloon pressure of the balloon guide catheter is released, and then the balloon pressure of the blocking balloon is released, so that the thrombus and detached vascular plaque that may be hidden between the balloon and the blood vessel wall can be captured by the brain umbrella; the brain umbrella system is pushed and retrieved through the motor catheter.After in vitro cleaning and reinstallation of the brain umbrella system, the assembled brain umbrella system is then delivered to the distal end of the original stenotic segment through the lumen of the balloon guide catheter and released again (to capture the vascular plaques that may fall off due to the slipping of multiple groups of atherectomy motors on the inner wall of the blood vessel when the motor guide is recovered). Then, under the protection of the brain umbrella, the 45° guide catheter, motor catheter, and peripheral balloon catheter are recovered. Finally, the brain umbrella is recovered through the balloon guide catheter and the balloon guide catheter is withdrawn; thus, the atherectomy surgery assisted by the motor catheter is completed. This solves the problem that carotid endarterectomy cannot be performed because the patient cannot tolerate general anesthesia or traditional incision surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the electromechanical catheter-assisted carotid endarterectomy surgery system.

[0015] Figure 2 This is a schematic diagram of the motor duct.

[0016] Figure 3 It is a schematic cross-sectional view of the motor catheter atherectomy motor unit.

[0017] Figure 4 It is a schematic diagram of the longitudinal section of the motor catheter atherectomy motor unit.

[0018] Figure 5 It is a cross-sectional schematic diagram of the combination of the rotary grinding motor unit, the partition anti-friction plate, and the motor coordination control unit.

[0019] Figure 6 It is a schematic diagram of the interface and connection method of the free end of the occluding balloon liquid delivery microcatheter.

[0020] Figure 7 This is a schematic diagram of the motor catheter-assisted carotid endarterectomy surgery system before operation.

[0021] Figure 8 It is a schematic diagram of the working principle of the motor catheter-assisted carotid endarterectomy surgery system.

[0022] Fig. 9 Schematic diagram of the brain umbrella forward capturing potential residual plaques.

[0023] Fig.10 This is a schematic diagram of the recovery of the brain umbrella via the motor catheter.

[0024] Fig.11 It is a schematic diagram of the recovery of the motor catheter and peripheral balloon catheter under the brain umbrella.

[0025] Fig.12 This is a schematic diagram before the endarterectomy brain umbrella is retrieved.

[0026] In the figure: 1-motor catheter, 2-balloon guide catheter, 3-45° angle guide catheter, 4-brain protection umbrella, 5-peripheral balloon catheter, 6-motor catheter body, 7-occluding balloon, 8-rotational grinding motor group, 9-motor group coordination control unit, 10-occluding balloon liquid delivery microcatheter, 11-motor group power transmission wire, 12-motor inner stator, 13-motor outer rotor, 14-north and south pole magnetic strips, 15-rotational grinding nails, 16-rotational grinding grooves, 17-powered coils, 18-partition anti-friction plates. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] See also Figures 1 to 12 The present invention provides a motor catheter-assisted carotid endarterectomy surgery system, comprising a motor catheter 1, a balloon guide catheter 2, a 45° angle guide catheter 3, a brain protection umbrella 4 and a peripheral balloon catheter 5; the 45° angle guide catheter 3 is sleeved on the outside of the motor catheter 1, the brain protection umbrella 4 is installed at the front end of the motor catheter 1 in a released state, the brain protection umbrella 4 is a quick-exchange protection umbrella, the guide wire of the brain protection umbrella 4 is placed in the lumen of the motor catheter 1, the guide wire length of the brain protection umbrella 4 is greater than the length of the motor catheter 1, the motor catheter 1 is designed to have several specifications of 110 cm, 120 cm, and 130 cm in length, the peripheral balloon catheter 5 is installed on one side of the 45° angle guide catheter 3, and the balloon guide catheter 2 is installed in parallel on one side of the 45° angle guide catheter 3.

[0029] Furthermore, the motor catheter 1 includes a motor catheter body 6, a blocking balloon 7, multiple groups of atherectomy motor groups 8, a motor group coordination control unit 9, a blocking balloon liquid delivery microcatheter 10 and a motor group power transmission guidewire 11; the blocking balloon 7 is installed on the outer wall of the front end catheter of the motor catheter body 6, the maximum diameter of the blocking balloon 7 in the working state is 6 mm, and the distance length between the blocking balloon 7 and the multiple groups of atherectomy motor groups 8 is designed to be 5.0 cm, 6.0 cm, 7.0 cm, 8.0 cm, 9.0 cm, and 10.0 cm in length specifications to meet different vascular requirements, the multiple groups of atherectomy motor groups 8 are adjacent to each other and are all installed on the motor catheter body 6, the motor group coordination control unit 9 is installed at the proximal end of the atherectomy motor group 8, and is connected to the multiple groups of atherectomy motor groups 8 through a power transmission wire, and the distal end of the blocking balloon liquid delivery microcatheter 10 is buried in the motor catheter In the tube wall of the body 6, the proximal end of the blocking balloon liquid delivery microcatheter 10 is free from the tube wall of the motor catheter body 6 to form an independent liquid delivery microcatheter; the distal end of the power transmission guidewire 11 of the atherectomy motor group is buried in the proximal tube wall of the motor catheter body 6, and the proximal end of the power transmission guidewire 11 of the atherectomy motor group is free from the proximal tube wall of the motor catheter body 6 to form two power transmission wires, the working voltage of the atherectomy motor group 8 of the motor catheter 1 is 12V, the working speed of the atherectomy motor group 8 of the motor catheter 1 is 500-1000 rpm, the working speed of the atherectomy motor group 8 of the motor catheter 1 is controlled by the motor coordination control unit 9 and can be increased by powering off and on in vitro and fall back to the minimum speed after the speed reaches the peak, the power transmission guidewire 11 of the atherectomy motor group is connected to the external power source in vitro through a wire, and the proximal catheter of the motor catheter body 6 is a homogeneous lumen catheter lacking a Luer connector.

[0030] Furthermore, the atherectomy motor group 8 includes an inner motor stator 12 and an outer motor rotor 13, the inner motor stator 12 is a hollow pipe design, the hollow pipe design constitutes a partial segment of the annular tube cavity of the motor catheter body 6, the inner motor stator 12 includes multiple groups of north and south pole magnetic strips 14, the multiple groups of north and south pole magnetic strips 14 are parallel to the motor catheter body 6, and the sides of the north and south pole magnetic strips 14 are wound with power-on coils 17, the power-on coils 17 are electrically connected to the motor coordination control unit 9, and are electrically connected to the motor group power transmission wire 11; the outer motor rotor 13 is sleeved on the outer periphery of the inner motor stator 12, and the surface of the outer motor rotor 13 has multiple atherectomy nails 15 and multiple atherectomy grooves 16, the motor catheter body 6 is set to an outer diameter of 8F in the atherectomy motor group 8 segment, and the outer diameter of the remaining motor catheter body 6 segment is 5F.

[0031] Furthermore, the atherectomy motor group 8 has a partition anti-friction plate 18 , and the partition anti-friction plate 18 is installed between the adjacent atherectomy motor groups 8 .

[0032] Furthermore, the 45° angle guide catheter is set to be a pre-molded bend at a 45° angle 5 cm away from the catheter head end.

[0033] In this embodiment, when performing carotid endarterectomy, firstly, the left and right femoral arteries are sheathed (8F short sheath) and the right radial artery is sheathed (6F long sheath) in the surgical patient, and then the assembled motor catheter 1 and the 45° angle guide catheter 3 (the motor catheter 1 is sheathed in the 45° angle guide catheter 3) are inserted through the right femoral artery sheath, and delivered to the proximal end of the target stenotic blood vessel under the guidance of the guide wire. Then, the balloon guide catheter 2 with the built-in peripheral balloon catheter 5 is inserted into the left femoral artery sheath to reach the end of the target common carotid artery, and the balloon of the pressurized balloon guide catheter 2 is used to block the blood flow of the proximal blood vessel. Then, the brain umbrella 4 is delivered to the distal end of the target stenotic blood vessel segment through the motor catheter 1, and the brain umbrella 4 is released (or after the proximal blood flow of the pressurized balloon guide catheter 2 is blocked, the micro-guidewire and the peripheral balloon catheter 5 are sent into the motor catheter 1 to pre-expand the target stenotic blood vessel segment to assist the brain umbrella 4 in reaching the position and releasing it). After the brain protection umbrella 4 works normally, the balloon pressure of the balloon guide catheter 2 is released, and then the stenotic segment of the target blood vessel is pre-dilated by the balloon (to assist the motor catheter body 6 and the atherectomy motor group 8 to reach the stenotic blood vessel area). After the motor catheter body 6 and the atherectomy motor group 8 reach the target blood vessel area, the proximal end of the motor catheter body 6 together with the guide wire of the brain protection umbrella 4 are reversely delivered from the long sheath of the right radial artery (to realize a temporary channel for blood supply from the right radial artery to the internal carotid artery, to prevent the occurrence of intracranial ischemia in the patient due to insufficient or no intracranial perfusion during the surgical operation). Then, pressure is applied to activate the balloon of balloon guide catheter 2 to block the forward blood flow in the proximal blood vessel, and pressure is applied to activate the blocking balloon 7 to block the forward blood flow in the distal blood vessel. Subsequently, the peripheral balloon catheter 5 is activated to block the reverse blood flow in the external carotid artery (to achieve a closed surgical operation area with no forward blood flow in the proximal end, no forward or reverse blood flow in the distal end, and no forward or reverse blood flow in the side branches). The surgical system is tested: positive pressure infusion flows in through the 45° angle guide catheter 3, and the liquid flows out through the balloon guide catheter 2 under negative pressure.The clear water flow in the system indicates that the blood flow in the distal, proximal and branch vessels of the system is completely blocked. The external 12V external power supply is connected to start the carotid intima resection by the atherectomy motor group 8, and the motor catheter body 6 and the atherectomy motor group 8 are controlled by manipulating the 45° angle guide catheter 3 to perform multi-angle atherectomy on the target stenotic blood vessel. The atherectomized plaque residues and the positive pressure infusion liquid are negatively sucked out of the body through the balloon guide catheter 2. During the operation, the atherectomy depth and the progress of the operation can be determined by angiography through the 45° angle guide catheter 3. After it is confirmed that the atherectomy meets the expectations of the operation, the balloon pressure of the balloon guide catheter 2 and the balloon pressure of the blocking balloon 7 are first released, and the thrombus and detached vascular plaque that may be potential between the balloon and the blood vessel wall are released and captured by the brain protection umbrella 4. ; Then the brain protection umbrella is recovered through the motor catheter body 6; the brain protection umbrella 4 that has been cleaned and reassembled in vitro is sent to the distal end of the distal stenosis segment through the cavity of the balloon guide catheter 2 and released again (in order to capture and recover the vascular plaque that may scratch the vascular wall and fall off when the motor guide 1 is withdrawn), and then the 45° angle guide catheter 3 and the motor catheter body 1 are recovered under the protection of the brain protection umbrella, and the peripheral balloon 5 is recovered, and finally, after the angiography of the balloon guide catheter 2 confirms that the distal blood vessel is unobstructed, the brain protection umbrella 4 is recovered, and the balloon guide catheter 2 is withdrawn, and then the motor catheter body 1 is used to assist the vascular endothelial rotational grinding and stripping surgery, thereby solving the problem that carotid endarterectomy cannot be performed because the patient cannot tolerate general anesthesia or traditional incision surgery.

[0034] Beneficial effects:

[0035] 1. The electromechanical catheter-assisted carotid endarterectomy surgical system provided by the present invention solves the problem that carotid endarterectomy cannot be performed because patients cannot tolerate general anesthesia or traditional open surgery;

[0036] 2. The electromechanical catheter-assisted carotid endarterectomy surgical system provided by the present invention solves the problems of large trauma and long wound healing time of the current traditional carotid endarterectomy;

[0037] 3. The electromechanical catheter-assisted carotid endarterectomy surgical system provided by the present invention perfectly solves the problem of the need to set up or prepare a joint operating room in order to reduce surgical risks and facilitate surgical operations.

[0038] What is disclosed above is only a preferred embodiment of the motor catheter-assisted carotid endarterectomy surgery system of the present invention. Of course, it cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field 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 are still within the scope of the invention.

Claims

1. A motor-assisted carotid endarterectomy surgical system, characterized in that: It includes a motor catheter, a balloon guide catheter, a 45° angle guide catheter, a brain protection umbrella and a peripheral balloon catheter. The 45° angle guide catheter is sleeved on the outside of the motor catheter. The brain protection umbrella is installed at the front end of the motor catheter in a released state. The guide wire of the brain protection umbrella is placed in the lumen of the motor catheter. The balloon guide catheter contains the peripheral balloon catheter. The peripheral balloon catheter is installed on one side of the 45° angle guide catheter in a working state. The balloon guide catheter is installed in parallel on one side of the 45° angle guide catheter.

2. The electromechanical catheter-assisted carotid endarterectomy surgical system according to claim 1, characterized in that: The motor catheter comprises a motor catheter body, a blocking balloon, multiple groups of atherectomy motor groups, a motor group coordination control unit, a blocking balloon liquid delivery microcatheter and a motor group power transmission wire; the blocking balloon is installed on the front end catheter outer wall of the motor catheter body, the multiple groups of atherectomy motor groups are adjacent to each other and are all installed on the motor catheter body, the motor group coordination control unit is installed at the proximal end of the atherectomy motor group, and is connected to the multiple groups of atherectomy motor groups through power transmission wires, the distal end of the blocking balloon liquid delivery microcatheter is buried in the tube wall of the motor catheter body, and the proximal end of the blocking balloon liquid delivery microcatheter is free from the tube wall of the motor catheter body to form an independent liquid delivery microcatheter; the distal end of the power transmission wire of the atherectomy motor group is buried in the proximal tube wall of the motor catheter body, and the proximal end of the power transmission wire of the atherectomy motor group is free from the proximal tube wall of the motor catheter body to form two power transmission wires.

3. The electromechanical catheter-assisted carotid endarterectomy surgical system according to claim 2, characterized in that: The atherectomy motor group includes an inner motor stator and an outer motor rotor. The inner motor stator is designed as a hollow pipe, and the hollow pipe design constitutes a partial segment of the annular tube cavity of the motor catheter body. The inner motor stator contains multiple groups of north and south pole magnetic strips, and the multiple groups of north and south pole magnetic strips are parallel to the motor catheter body. The sides of the north and south pole magnetic strips are wound with energized coils. All adjacent energized coils are electrically connected in parallel and are electrically connected to the power transmission wire of the atherectomy motor group through the motor group coordination control unit; the outer motor rotor is sleeved on the outer periphery of the inner motor stator, and the surface of the outer motor rotor has multiple atherectomy nails and multiple atherectomy grooves.

4. The electromechanical catheter-assisted carotid endarterectomy surgical system according to claim 2, characterized in that: The atherectomy motor group has a partition anti-friction plate, and the partition anti-friction plate is installed between the adjacent atherectomy motor groups.

5. The electromechanical catheter-assisted carotid endarterectomy surgical system according to claim 1, characterized in that: The 45° angle guide catheter is set to a 45° pre-bend at a position 5 cm away from the catheter head end.

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