Pulsed electric field ablation device for hypertrophic cardiomyopathy
By integrating components such as electric field sensors, temperature sensors, and ultrasound probes into the pulsed electric field ablation device for hypertrophic cardiomyopathy, and combining them with artificial intelligence algorithms, real-time three-dimensional cardiac images are provided. This solves the problem of high positioning difficulty in surgery for hypertrophic cardiomyopathy with existing devices, and achieves precise ablation and efficient surgery.
Patent Information
- Application Number
- PCT/CN2025/078262
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-10-08
- Filing Date
- 2025-02-20
- Publication Date
- 2026-04-16
AI Technical Summary
Existing pulsed electric field ablation devices for thick cardiomyopathy require surgeons to precisely place the ablation component in the hypertrophic myocardial region during surgery. This is affected by differences in heart rhythm and individual anatomical structure, increasing the difficulty of ablation positioning and the operation time.
A device comprising a pulse generator, a flexible catheter, a PFAD electrode catheter, and auxiliary ablation components was designed. Utilizing components such as an electric field sensor, a temperature sensor, a pressure sensor, and an ultrasound probe, combined with artificial intelligence and machine learning algorithms, it provides real-time three-dimensional cardiac images and precise positioning. The perfusion component enhances the ablation effect, and the guide wire and rotation control component stabilize the catheter movement.
This technology enables precise positioning and stable operation of pulsed electric field ablation for cardiomyopathy, reducing the number of surgical adjustments, shortening the operation time, improving surgical efficiency and safety, and reducing the risk of thermal damage.
Smart Images

Figure CN2025078262_16042026_PF_FP_ABST
Abstract
Description
A pulsed electric field ablation device for hypertrophic cardiomyopathy Technical Field
[0001] This invention belongs to the field of pulsed electric field ablation technology for hypertrophic cardiomyopathy, specifically a pulsed electric field ablation device for hypertrophic cardiomyopathy. Background Technology
[0002] Hypertrophic cardiomyopathy (HCM) is a myocardial disease of unknown cause, characterized by asymmetrical thickening of the ventricular walls, often involving the interventricular septum, resulting in a smaller ventricular cavity, obstructed left ventricular filling, and decreased left ventricular diastolic compliance. Based on the presence or absence of left ventricular outflow tract obstruction, it is classified as obstructive or non-obstructive hypertrophic cardiomyopathy, possibly related to genetics. HCM carries a risk of sudden death and is one of the causes of exercise-induced sudden death. HCM is an autosomal dominant inherited disease, with 60%–70% being familial and 30%–40% sporadic. Familial and sporadic cases, as well as childhood and adult cases, share the same pathogenic gene mutation. Currently, at least 14 gene mutations have been confirmed to be associated with the pathogenesis of HCM, 10 of which encode sarcomere structural proteins, and the vast majority of mutations are located in these genes.
[0003] Existing pulsed electric field ablation devices for thick cardiomyopathy require doctors to precisely place the ablation component in the hypertrophic myocardium before performing precise ablation. This method greatly tests the surgeon's skill level. The continuous beating of the patient's heart and the differences in individual anatomical structures increase the difficulty of ablation positioning, which may require multiple adjustments to the PFAD electrode catheter position, prolonging the time spent by the doctor during the operation and increasing the difficulty of surgical treatment. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a pulsed electric field ablation device for hypertrophic cardiomyopathy, including a pulse generator, a flexible catheter fixedly installed on one side of the pulse generator, a sliding member slidably connected to the outer surface of the flexible catheter, a fixing member on the outer surface of the flexible catheter, a plurality of PFAD electrode catheters fixedly installed in a ring array between the sliding member and the fixing member, a plurality of pulse electrode plates on the outer surface of the plurality of PFAD electrode catheters, an auxiliary ablation component on the surface of the pulse generator and the flexible catheter, a traction control component on the surface of the flexible catheter, and a perfusion component on the outer surface of the PFAD electrode catheter;
[0006] The auxiliary ablation component includes an electric field sensor disposed on one side surface of several pulsed electrode pads, a temperature sensor fixedly mounted on the other side surface of several pulsed electrode pads, several temperature sensors fixedly mounted on the outer surface of several PFAD electrode conduits, several first pressure sensors disposed on the outer surface of several PFAD electrode conduits, several reflective marking layers disposed on the outer surface of several PFAD electrode conduits, a second pressure sensor disposed at one end of the flexible conduit, a hinged retaining ring disposed on the outer surface of the flexible conduit, side blocks fixedly mounted on both sides of the outer surface of the hinged retaining ring, an optical camera fixedly mounted on the upper surface of the side blocks, an annular groove formed on the outer surface of the flexible conduit, an electric slip ring disposed on the inner bottom wall of the annular groove, an electric slider electrically slidably connected inside the electric slip ring, an ultrasonic probe disposed on the upper surface of the electric slider, and the hinged retaining rings mutually limiting each other by bolts;
[0007] The pulse generator has an internal storage cavity, and a mounting plate is provided on the inner wall of the storage cavity. A signal processing circuit board, a communication circuit board, and a power management circuit board are located on the surface of the mounting plate. These circuit boards are electrically connected. The internal components of the auxiliary ablation assembly are all connected to the power management circuit board via wires. In a preferred embodiment, the signal processing circuit board includes a high-speed analog-to-digital converter (ADC) mounted on the surface of the mounting plate. The ADC incorporates artificial intelligence and machine learning algorithms. It converts analog signals into digital signals, performs digital processing, image reconstruction, and enhancement on the ultrasound probe signal to improve image quality and resolution. A digital signal processor and a memory are located on one side of the ADC. These components decode and calculate the coordinates of the signals from the second and first pressure sensors to determine the precise positions of the pulse electrode pads and the PFAD electrode catheter within the heart.
[0008] As a preferred technical solution of this application, the communication circuit board includes a communication interface chip and a protocol stack chip disposed on the surface of the mounting plate. A display is disposed on the upper surface of the pulse generator. The display is electrically connected to the communication circuit board. The communication interface chip and the protocol stack chip convert the signal processed by the signal processing circuit board into the display, so that the doctor can observe the surgical situation in real time. A cable interface is electrically connected to one side of the communication interface chip through a wire. The cable interface is fixedly installed on the side surface of the pulse generator.
[0009] As a preferred technical solution of this application, the traction control component includes guide steel wires disposed on both sides of the inner wall of the flexible conduit, guide wheels are slidably connected to both sides of the outer surface of the flexible conduit, connecting frames are connected to both sides of the outer surface of the guide wheels, connecting rods are rotatably connected to both sides of the outer surface of the connecting frames, and a rotating plate is fixedly installed at the other end of the connecting rod.
[0010] As a preferred technical solution of this application, a locking post is fixedly installed on one side surface of the rotating plate, a locking cylinder is rotatably connected to one end of the locking post, the locking cylinder is fixedly installed on the outer surface of the flexible conduit, a fixing ring is provided on the outer surface of the flexible conduit, a locking plate is fixedly installed on the lower surface of the fixing ring, and a rotating shaft is rotatably connected inside the locking plate.
[0011] As a preferred technical solution of this application, damping plates are fixedly installed on both sides of the rotating shaft, the damping plates are in close contact with the side surface of the clamping plate, transmission wheels are fixedly installed on the outer surfaces of the rotating shaft and the clamping post, a transmission belt is attached to the outer surface of the transmission wheel, and a rotating handle is fixedly installed at one end of the rotating shaft.
[0012] As a preferred technical solution of this application, the infusion assembly includes a first water pipe disposed on the side surface of a plurality of PFAD electrode conduits, a plurality of nozzles disposed on the surface of the first water pipe, a guide ring fixedly installed at one end of the first water pipe, the guide ring being rotatably connected to the outer surface of the PFAD electrode conduit, a corrugated hose fixedly installed at one end of the first water pipe, a telescopic water pipe fixedly installed at one end of a plurality of the corrugated hoses, and a water injection pipe disposed at one end of the telescopic water pipe, the water injection pipe being disposed on the outer surface of the flexible conduit.
[0013] As a preferred technical solution of this application, a plurality of driven gears and a drive gear ring are rotatably connected to the lower surface of the sliding member, a first water pipe is fixedly installed on the lower surface of the driven gears, a drive gear ring is meshed with one side of the plurality of driven gears, an electromagnetic coil is provided inside the sliding member, the electromagnetic coil is electrically connected to a power management circuit board through a wire, and a rotor is provided on the inner side wall of the drive gear ring.
[0014] As a preferred technical solution of this application, the auxiliary ablation component further includes a storage box disposed on the side surface of the pulse generator, the inner side wall of the storage box is connected to a telescopic frame, one end of the telescopic frame is rotatably connected to a magnetic field generator, and the surface of the storage box is rotatably connected to a protective cover.
[0015] The beneficial effects of this invention are as follows:
[0016] 1. The pulsed electric field ablation device for hypertrophic cardiomyopathy described in this invention can generate real-time three-dimensional echocardiography during the ablation process by setting auxiliary ablation components. The three-dimensional echocardiography can provide doctors with a clearer image of the heart structure, making it easier for doctors to better determine the area of hypertrophic myocardium. Furthermore, by using artificial intelligence and machine learning algorithms inside the high-speed analog-to-digital converter to analyze data from the hearts of a large number of patients, personalized heart models can be generated to assist doctors in precise positioning, thereby reducing the number of times the PFAD electrode catheter position needs to be adjusted, shortening the time required for doctors during surgery, and reducing the difficulty of surgical treatment.
[0017] 2. The pulsed electric field ablation device for hypertrophic cardiomyopathy described in this invention, through the setting of the traction control component, can drive the rotating shaft to rotate by rotating the rotating handle. Through the transmission pulley, the flexible catheter can be effectively bent under the moving guide wheel. The internal guide wire can effectively support the flexible catheter and can be bent, which makes it easy for the doctor to stably control the degree of bending of the flexible catheter. This allows the PFAD electrode catheter and pulsed electrode pad to smoothly and stably enter the right ventricle from the right atrium, thereby improving the doctor's surgical efficiency.
[0018] 3. The pulsed electric field ablation device for hypertrophic cardiomyopathy described in this invention, through the setting of the perfusion component, firstly, by energizing the electromagnetic coil, the first water pipe rotates from the inner wall to the outer wall, aiming the nozzle at the hypertrophic cardiomyopathy area, and physiological saline is introduced into the telescopic water pipe at an appropriate pressure through the injection pipe, so that the physiological saline is sprayed on the hypertrophic cardiomyopathy area, which improves the conductivity of the local tissue at the ablation site, improves the consistency and effect of ablation, and at the same time can play a cooling role, reduce tissue overheating, lower tissue temperature, and reduce the risk of thermal damage. Attached Figure Description
[0019] The invention will now be further described with reference to the accompanying drawings.
[0020] Figure 1 is a perspective view of the present invention;
[0021] Figure 2 is a schematic diagram of the first part of the infusion assembly in this invention;
[0022] Figure 3 is a schematic diagram of the second part of the infusion assembly in this invention;
[0023] Figure 4 is a schematic diagram of the first part of the auxiliary ablation component in this invention;
[0024] Figure 5 is an enlarged structural schematic diagram of point A in Figure 4 of the present invention;
[0025] Figure 6 is a first-view structural schematic diagram of the traction control component in this invention;
[0026] Figure 7 is a second-view structural schematic diagram of the traction control component in this invention;
[0027] Figure 8 is a schematic diagram of the second partial structure of the auxiliary ablation component in this invention;
[0028] Figure 9 is a schematic diagram of the telescopic frame and magnetic field generator in this invention.
[0029] In the diagram: 1. Pulse generator; 2. Flexible conduit; 3. Slider; 4. PFAD electrode conduit; 5. Pulse electrode plate; 6. Auxiliary ablation assembly; 602. Temperature sensor; 603. First pressure sensor; 604. Reflective marking layer; 605. Second pressure sensor; 606. Optical camera; 607. Electric slip ring; 608. Ultrasonic probe; 609. Signal processing circuit board; 610. Communication circuit board; 611. Power management circuit board; 612. Cable interface; 613. Telescopic frame; 614. Magnetic field generator; 615. Display; 7. Traction control assembly; 701. Guide wire; 702. Guide wheel; 703. Connecting frame; 704. Connecting rod; 705. Rotating plate; 706. Fixing shackle; 707. Rotating shaft; 708. Damping plate; 8. Injection assembly; 801. First water pipe; 802. Nozzle; 803. Guide ring; 804. Corrugated hose; 805. Telescopic water pipe; 806. Driven gear; 807. Drive gear ring; 808. Electromagnetic coil. Detailed Implementation
[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0031] Example 1:
[0032] As shown in Figures 1 to 9, the pulsed electric field ablation device for hypertrophic cardiomyopathy according to an embodiment of the present invention includes a pulse generator 1, a flexible conduit 2 fixedly installed on one side of the pulse generator 1, a sliding member 3 slidably connected to the outer surface of the flexible conduit 2, a fixing member on the outer surface of the flexible conduit 2, a plurality of PFAD electrode conduits 4 fixedly installed in a ring array between the sliding member 3 and the fixing member, a plurality of pulsed electrode plates 5 on the outer surface of the plurality of PFAD electrode conduits 4, an auxiliary ablation component 6 on the surface of the pulse generator 1 and the flexible conduit 2, a traction control component 7 on the surface of the flexible conduit 2, and a perfusion component 8 on the outer surface of the PFAD electrode conduits 4;
[0033] The auxiliary ablation component 6 includes an electric field sensor disposed on one side surface of several pulse electrode pads 5, a temperature sensor 602 fixedly mounted on the other side surface of several pulse electrode pads 5, several temperature sensors 602 fixedly mounted on the outer surface of several PFAD electrode conduits 4, several first pressure sensors 603 disposed on the outer surface of several PFAD electrode conduits 4, several reflective marking layers 604 disposed on the outer surface of several PFAD electrode conduits 4, a second pressure sensor 605 disposed at one end of the flexible conduit 2, a hinged retaining ring disposed on the outer surface of the flexible conduit 2, side blocks fixedly mounted on both sides of the outer surface of the hinged retaining ring, an optical camera 606 fixedly mounted on the upper surface of the side blocks, an annular groove opened on the outer surface of the flexible conduit 2, an electric slip ring 607 disposed on the inner bottom wall of the annular groove, an electric slider electrically slidably connected inside the electric slip ring 607, an ultrasonic probe 608 disposed on the upper surface of the electric slider, and the hinged retaining rings being mutually limited by bolts;
[0034] The pulse generator 1 has a storage cavity inside, and a mounting plate is provided on the inner wall of the storage cavity. The surface of the mounting plate has a signal processing circuit board 609, a communication circuit board 610 and a power management circuit board 611. The processing circuit board 609, the communication circuit board 610 and the power management circuit board 611 are electrically connected. The internal components of the auxiliary ablation component 6 are all connected to the power management circuit board 611 through wires.
[0035] The signal processing circuit board 609 includes a high-speed analog-to-digital converter (ADC) disposed on the surface of the mounting plate. The ADC is equipped with artificial intelligence and machine learning algorithms. The ADC is used to convert analog signals into digital signals, perform digital processing, image reconstruction and enhancement on the signal of the ultrasound probe 608 to improve image quality and resolution. A digital signal processor and memory are disposed on one side of the ADC. The digital signal processor and memory are used to decode and calculate the coordinates of the signals of the second pressure sensor 605 and the first pressure sensor 603 to determine the accurate position of the pulse electrode 5 and the PFAD electrode catheter 4 in the heart.
[0036] The communication circuit board 610 includes a communication interface chip and a protocol stack chip disposed on the surface of the mounting plate. A display 615 is disposed on the upper surface of the pulse generator 1. The display 615 is electrically connected to the communication circuit board 610. The communication interface chip and the protocol stack chip convert the signal processed by the signal processing circuit board 609 into the display 615, so that the doctor can observe the surgical situation in real time. A cable interface 612 is electrically connected to one side of the communication interface chip through a wire. The cable interface 612 is fixedly installed on the side surface of the pulse generator 1.
[0037] The auxiliary ablation component 6 also includes a storage box disposed on the side surface of the pulse generator 1. A telescopic frame 613 is connected to the inner side wall of the storage box. A magnetic field generator 614 is rotatably connected to one end of the telescopic frame 613. A protective cover is rotatably connected to the surface of the storage box.
[0038] In this embodiment: the surgeon inserts the flexible catheter 2 into the patient's heart. The second pressure sensor 605 at the bottom detects the pressure during insertion, thereby helping the doctor determine whether the catheter is in the correct position and avoiding over-insertion that could cause damage. The electric slip ring 607 at the bottom is activated to drive the internal electric slider and the ultrasound probe 608 on the upper surface to rotate, thereby providing a comprehensive three-dimensional image of the heart. The ultrasound probe 608 inputs the data into the signal processing board 609, and then the three-dimensional image of the heart is displayed on the display 615. It can provide real-time three-dimensional images of the heart, clearly showing the myocardial structure and blood flow, with high frame rate and high resolution, and can dynamically observe the heart.
[0039] After detecting the hypertrophic myocardium, the PFAD electrode catheter 4 is bent by the sliding member 3. The PFAD electrode catheter 4 and the pulsed electrode pads 5 on its surface are in close contact with the hypertrophic myocardium. During the ablation process, the temperature sensor 602 can detect that the temperature rise during the pulsed electric field ablation may cause tissue damage. The temperature sensor 602 provides real-time temperature feedback to help control the ablation energy, prevent overheating, and has a rapid response capability to adjust the ablation parameters in a timely manner. The first pressure sensor 603 is used to detect the contact pressure between the catheter and the myocardial tissue, which can help the doctor determine whether the PFAD electrode catheter 4 is in the correct position and avoid damage caused by over-insertion. Since the reflective marking layer 604 is set on the surface of the PFAD electrode catheter 4, the optical camera 606 can capture the position of the reflective marking layer 604 and the PFAD electrode catheter 4, thereby calculating the position of the PFAD electrode catheter 4. Then, the signal processing circuit board 609 converts the data into coordinates and displays them on the display 615 to facilitate the doctor's surgical operation. The communication circuit board 610 can transmit the image, position and sensor data processed by the signal processing circuit board 609 to the surgical navigation display system for the doctor to observe and make decisions in real time.
[0040] Before the operation, the storage box needs to be opened and the magnetic field generator 614 inside is taken out through the telescopic frame 613. At the same time, the telescopic frame 613 is adjusted to place the magnetic field generator 614 above the operating room. The magnetic field generator 614, together with the electric field sensor, can detect the electric field distribution around the PFAD electrode catheter 4, help determine the range and intensity of the ablation area, provide real-time electric field information, and assist the surgeon in adjusting the ablation parameters to achieve precise ablation.
[0041] Example 2:
[0042] As shown in Figures 1 to 9, the traction control assembly 7 includes guide wires 701 disposed on both sides of the inner wall of the flexible conduit 2, guide wheels 702 slidably connected to both sides of the outer surface of the flexible conduit 2, connecting frames 703 connected to both sides of the outer surface of the guide wheels 702, connecting rods 704 rotatably connected to both sides of the outer surface of the connecting frames 703, and a rotating plate 705 fixedly installed at the other end of the connecting rods 704.
[0043] A locking pin is fixedly installed on one side surface of the rotating plate 705. A locking cylinder is rotatably connected to one end of the locking pin. The locking cylinder is fixedly installed on the outer surface of the flexible conduit 2. A fixing ring 706 is provided on the outer surface of the flexible conduit 2. A locking plate is fixedly installed on the lower surface of the fixing ring 706. A rotating shaft 707 is rotatably connected inside the locking plate.
[0044] Damping plates 708 are fixedly installed on both sides of the rotating shaft 707. The damping plates 708 are in close contact with the side surface of the clamping plate. Transmission wheels are fixedly installed on the outer surfaces of the rotating shaft 707 and the clamping post. A transmission belt is attached to the outer surface of the transmission wheel. A rotating handle is fixedly installed at one end of the rotating shaft 707.
[0045] In this embodiment: when the pulse portion moves from the right atrium to the right ventricle, the bending direction of the flexible catheter 2 needs to be adjusted. The surgeon rotates the handle to drive the rotating shaft 707 to rotate. The rotation of the rotating shaft 707 drives the damping plate 708 to rotate inside the clamping plate. The damping plate 708 is relatively stable after the rotation stops due to the high friction. The rotating shaft 707 drives the rotating plate 705 on the other side to rotate through the transmission wheel and the transmission belt. The rotating plate 705 drives the connecting frame 703 to rotate through the connecting rod 704. The connecting frame 703 drives the guide wheel 702 to move. The guide wheel 702 slides on the surface of the flexible catheter 2 and adjusts the bending direction of the flexible catheter 2. The internal guide wire 701 can effectively support the flexible catheter 2, and the guide wire 701 can be bent, which makes it easy for the doctor to stably control the bending degree of the flexible catheter 2, so that the PFAD electrode catheter 4 and the pulse electrode 5 can smoothly and stably enter the right ventricle from the right atrium, thereby improving the surgeon's surgical efficiency.
[0046] Example 3:
[0047] As shown in Figures 1 to 9, the infusion assembly 8 includes a first water pipe 801 disposed on the side surface of several PFAD electrode conduits 4. Several nozzles 802 are disposed on the surface of the first water pipe 801. A guide ring 803 is fixedly installed at one end of the first water pipe 801. The guide ring 803 is rotatably connected to the outer surface of the PFAD electrode conduit 4. A corrugated hose 804 is fixedly installed at one end of the first water pipe 801. A telescopic water pipe 805 is fixedly installed at one end of several corrugated hoses 804. A water injection pipe is disposed at one end of the telescopic water pipe 805. The water injection pipe is disposed on the outer surface of the flexible conduit 2.
[0048] The lower surface of the sliding member 3 is rotatably connected to several driven gears 806 and a drive gear ring 807. The lower surface of the driven gears 806 is fixedly mounted with a first water pipe 801. The drive gear ring 807 is meshed with one side of the several driven gears 806. An electromagnetic coil 808 is provided inside the sliding member 3. The electromagnetic coil 808 is electrically connected to a power management circuit board 611 through wires. A rotor is provided on the inner side wall of the drive gear ring 807.
[0049] In this embodiment: Before pulse ablation, the electromagnetic coil 808 is energized through a wire. The electromagnetic coil 808 generates magnetic force to drive the rotor to rotate. The rotor drives the drive gear ring 807 to rotate. The driven gear ring 807 rotates, and the driven gear 806 meshing on its outer surface rotates. The driven gear 806 drives the first water pipe 801 below to rotate. The first water pipe 801 rotates on the outer surface of the flexible conduit 2 through the guide ring 803, rotating the first water pipe 801 from the inner side wall to the outer side wall. At the same time, the first water pipe 801 pulls the corrugated hose 804 to extend. Then, physiological saline is introduced into the interior of the telescopic water pipe 805 through the injection pipe at an appropriate pressure, and then sprayed outward through the nozzle 802 at an appropriate pressure. This allows the physiological saline to be sprayed onto the hypertrophic myocardial area, improving the conductivity of the local tissue at the ablation site, improving the consistency and effect of ablation, and also having a cooling effect, reducing tissue overheating, lowering tissue temperature, and reducing the risk of thermal damage.
[0050] The front, back, left, right, top, and bottom mentioned above are all based on Figure 1 in the accompanying drawings of the instruction manual. According to the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0051] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.
[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pulsed electric field ablation device for hypertrophic cardiomyopathy, characterized in that: The device includes a pulse generator (1), a flexible conduit (2) fixedly installed on one side of the pulse generator (1), a sliding member (3) slidably connected to the outer surface of the flexible conduit (2), a fixing member on the outer surface of the flexible conduit (2), a plurality of PFAD electrode conduits (4) fixedly installed in a ring array between the sliding member (3) and the fixing member, a plurality of pulse electrode plates (5) on the outer surface of the plurality of PFAD electrode conduits (4), an auxiliary ablation component (6) on the surface of the pulse generator (1) and the flexible conduit (2), a traction control component (7) on the surface of the flexible conduit (2), and an infusion component (8) on the outer surface of the PFAD electrode conduit (4). The auxiliary ablation component (6) includes an electric field sensor disposed on one side surface of a plurality of pulse electrode pads (5), a temperature sensor (602) fixedly mounted on the other side surface of each of the plurality of pulse electrode pads (5), a plurality of temperature sensors (602) fixedly mounted on the outer surface of the PFAD electrode conduit (4), a plurality of first pressure sensors (603) disposed on the outer surface of the plurality of PFAD electrode conduits (4), a plurality of reflective marking layers (604) disposed on the outer surface of the plurality of PFAD electrode conduits (4), and the flexible conduit (2) A second pressure sensor (605) is provided at one end of the flexible conduit (2). A hinged retaining ring is provided on the outer surface of the flexible conduit (2). Side blocks are fixedly installed on both sides of the outer surface of the hinged retaining ring. An optical camera (606) is fixedly installed on the upper surface of the side blocks. An annular groove is opened on the outer surface of the flexible conduit (2). An electric slip ring (607) is provided on the inner bottom wall of the annular groove. An electric slider is electrically slidably connected inside the electric slip ring (607). An ultrasonic probe (608) is provided on the upper surface of the electric slider. The hinged retaining rings are mutually limited by bolts. The pulse generator (1) has a storage cavity inside, and the inner wall of the storage cavity is provided with a mounting plate. The surface of the mounting plate is equipped with a signal processing circuit board (609), a communication circuit board (610) and a power management circuit board (611). The signal processing circuit board (609), the communication circuit board (610) and the power management circuit board (611) are electrically connected. The internal components of the auxiliary ablation component (6) are all connected to the power management circuit board (611) through wires. The traction control assembly (7) includes guide wires (701) disposed on both sides of the inner wall of the flexible conduit (2), guide wheels (702) are slidably connected to both sides of the outer surface of the flexible conduit (2), connecting frames (703) are connected to both sides of the outer surface of the guide wheels (702), connecting rods (704) are rotatably connected to both sides of the outer surface of the connecting frames (703), and a rotating plate (705) is fixedly installed at the other end of the connecting rods (704). The infusion assembly (8) includes a first water pipe (801) disposed on the side surface of a plurality of PFAD electrode conduits (4). A plurality of nozzles (802) are disposed on the surface of the first water pipe (801). A guide ring (803) is fixedly installed at one end of the first water pipe (801). The guide ring (803) is rotatably connected to the outer surface of the PFAD electrode conduit (4). A corrugated hose (804) is fixedly installed at one end of the first water pipe (801). A telescopic water pipe (805) is fixedly installed at one end of a plurality of the corrugated hoses (804). A water injection pipe is disposed at one end of the telescopic water pipe (805). The water injection pipe is disposed on the outer surface of the flexible conduit (2). The auxiliary ablation component (6) also includes a storage box disposed on the side surface of the pulse generator (1). The inner side wall of the storage box is connected to a telescopic frame (613). One end of the telescopic frame (613) is rotatably connected to a magnetic field generator (614). The surface of the storage box is rotatably connected to a protective cover.
2. The pulsed electric field ablation device for hypertrophic cardiomyopathy according to claim 1, characterized in that: The signal processing circuit board (609) includes a high-speed analog-to-digital converter disposed on the surface of the mounting plate. The high-speed analog-to-digital converter is equipped with artificial intelligence and machine learning algorithms. The high-speed analog-to-digital converter is used to convert analog signals into digital signals, perform digital processing, image reconstruction and enhancement on the signal of the ultrasound probe (608) to improve the image quality and resolution. A digital signal processor and memory are disposed on one side of the high-speed analog-to-digital converter. The digital signal processor and memory are used to decode and calculate the coordinates of the signals of the second pressure sensor (605) and the first pressure sensor (603) to determine the accurate position of the pulse electrode pad (5) and the PFAD electrode catheter (4) in the heart.
3. The pulsed electric field ablation device for hypertrophic cardiomyopathy according to claim 2, characterized in that: The communication circuit board (610) includes a communication interface chip and a protocol stack chip disposed on the surface of the mounting plate. A display (615) is disposed on the upper surface of the pulse generator (1). The display (615) is electrically connected to the communication circuit board (610). The communication interface chip and the protocol stack chip convert the signal processed by the signal processing circuit board (609) into the display (615), so that the doctor can observe the surgical situation in real time. A cable interface (612) is electrically connected to one side of the communication interface chip through a wire. The cable interface (612) is fixedly installed on the side surface of the pulse generator (1).
4. The pulsed electric field ablation device for hypertrophic cardiomyopathy according to claim 1, characterized in that: A locking pin is fixedly installed on one side surface of the rotating plate (705), and a locking cylinder is rotatably connected to one end of the locking pin. The locking cylinder is fixedly installed on the outer surface of the flexible conduit (2). A fixing ring (706) is provided on the outer surface of the flexible conduit (2). A locking plate is fixedly installed on the lower surface of the fixing ring (706), and a rotating shaft (707) is rotatably connected inside the locking plate.
5. The pulsed electric field ablation device for hypertrophic cardiomyopathy according to claim 4, characterized in that: Damping plates (708) are fixedly installed on both sides of the rotating shaft (707). The damping plates (708) are in close contact with the side surface of the clamping plate. Transmission wheels are fixedly installed on the outer surfaces of the rotating shaft (707) and the clamping post. A transmission belt overlaps the outer surface of the transmission wheel. A rotating handle is fixedly installed at one end of the rotating shaft (707).
6. The pulsed electric field ablation device for hypertrophic cardiomyopathy according to claim 5, characterized in that: The lower surface of the sliding member (3) is rotatably connected to a plurality of driven gears (806) and a drive gear ring (807). A first water pipe (801) is fixedly installed on the lower surface of the driven gears (806). The drive gear ring (807) is meshed with one side of the plurality of driven gears (806). An electromagnetic coil (808) is provided inside the sliding member (3). The electromagnetic coil (808) is electrically connected to a power management circuit board (611) through a wire. A rotor is provided on the inner side wall of the drive gear ring (807).
Citation Information
Patent Citations
Pulse electric field ablation device for hypertrophic cardiomyopathy
CN114587568A
Devices and methods for reducing microbubble formation during cardiac ablation
CN117355271A
Pulse electric field ablation device for hypertrophic cardiomyopathy
CN119074197A
Pulse electric field ablation instrument
CN217186412U
Catheter assembly for treatment of hypertrophic tissue
US20140243810A1