A magnetic control loop system

Abstract

This invention discloses a magnetically controlled electro-snatch system, belonging to the field of medical device technology. It includes a snare and an electromagnet. The snare comprises an electrode snare used to encircle the surface of the lesion tissue. The electrode snare is attracted by magnetic force. The electromagnet provides external magnetic attraction to move the electrode snare deeper into the lesion tissue. The snare uses an electrode snare that can be attracted by magnetic force. The electromagnet's magnetism attracts the electrode snare from outside the body, causing the lesion tissue to bulge due to pressure within the electrode snare. This facilitates the electrode snare securing the lesion tissue. Compared to using a syringe to inject saline solution to bulge the lesion tissue, this system is simpler for treating relatively flat lesions or polyps, significantly shortening the operation time and reducing patient discomfort.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a magnetically controlled electric coil system. Background Technology

[0002] During EMR (endoscopic mucosal resection) surgery, the hospital uses an endoscopic forceps channel to push a snare to the lesion site, extends the electrode snare to retrieve the diseased tissue or polyp, and then, while applying current, retracts the electrode snare to remove the diseased tissue or polyp. Figure 1 As shown. But Figure 1 Polyps in the brain are ideally shaped, pedunculated, and have a relatively long root, making them easy for doctors to retrieve and remove. However, most lesions or polyps are flatter in shape, making retrieval difficult. Figure 2 As shown.

[0003] Therefore, EMR surgery typically involves submucosal injection using a needle to raise the lesion, which is then harvested and excised. Figure 3 As shown, firstly, physiological saline is locally injected into the submucosa 200 between the mucosa 100 and the muscularis propria 300 using an injection needle to form local blisters below the lesion 400 of the mucosa 100, thereby lifting the diseased tissue of the mucosa 100; then, as... Figure 4 As shown, the electrode loop 11 is securely placed on the lesion tissue; then, as... Figure 5 As shown, the electrode loop 11 is energized, and the electrode loop is further tightened; finally, as... Figure 6 As shown, the diseased tissue was successfully removed.

[0004] However, the entire process requires the use of multiple instruments, which prolongs the operation time and undoubtedly increases the difficulty of the operation and the patient's suffering. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems and provide a magnetically controlled electric snare system. The snare uses an electrode snare that can be attracted by magnetic force. The magnetic assistance of the electromagnet helps the electrode snare to secure the lesion tissue. Compared with the method of using a syringe to inject saline to make the lesion tissue bulge, this method is simpler for treating lesions or polyps with a flat shape, which can significantly shorten the operation time and reduce the patient's pain.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a magnetically controlled electric snare system, including a snare device and an electromagnet. The snare device includes an electrode snare, which is used to loop around the surface of the lesion tissue. The electrode snare can be attracted by magnetic attraction. The electromagnet is used to provide magnetic attraction outside the body to move the electrode snare towards the deeper layers of the lesion tissue.

[0007] Preferably, the electrode sleeve is embedded with a ferromagnetic body or the electrode sleeve is made of a ferromagnetic material.

[0008] Preferably, the cross-section of the electrode ring is elliptical, and the major axis of the ellipse is parallel to the annular axis of the electrode ring.

[0009] Preferably, the snare further includes a handle, a pull rope, a spring tube, and a pull ring. The distal end of the pull rope is connected to the electrode snare, and the proximal end of the pull rope is connected to the pull ring. The spring tube and the handle are both sleeved on the pull rope, and the proximal end of the spring tube is connected to the distal end of the handle.

[0010] Preferably, the system further includes a current controller, through which the electromagnet adjusts the magnitude of its magnetic force.

[0011] Preferably, the electrode ring has a developing zone at both its distal and proximal ends.

[0012] Preferably, the device also includes an operating table, the bottom of which is equipped with a horizontal movement mechanism for driving the electromagnet to move horizontally.

[0013] Preferably, the horizontal moving mechanism includes an x-direction moving unit and a y-direction moving unit; the x-direction moving unit includes an x-direction slide rail, an x-direction threaded rod, an x-direction moving plate, and an x-direction motor. The x-direction slide rail and the x-direction motor are both fixed to the bottom of the operating table. The x-direction threaded rod is rotatably connected to the bottom of the operating table. Both the x-direction slide rail and the x-direction threaded rod extend along the length of the operating table. The x-direction moving plate is slidably connected to the x-direction slide rail and threadedly connected to the x-direction threaded rod. The x-direction threaded rod passes through the x-direction... The rotation is driven by a motor; the y-direction moving unit includes a y-direction slide rail, a y-direction threaded rod, and a y-direction moving plate. The y-direction slide rail and the y-direction motor are both fixed to the y-direction moving plate. The y-direction threaded rod is rotatably connected to the y-direction moving plate. The y-direction slide rail and the y-direction threaded rod both extend along the width direction of the operating table. The y-direction moving plate is slidably connected to the y-direction slide rail and threadedly connected to the y-direction threaded rod. The electromagnet is mounted on the y-direction moving plate, and the y-direction threaded rod is driven to rotate by the y-direction motor.

[0014] Preferably, the operating table is provided with a movement direction button, which is electrically connected to the horizontal movement mechanism.

[0015] Preferably, the device further includes a handheld X-ray machine, a positioning frame, and a controller. The positioning frame includes a column, a first positioning arm, a second positioning arm, a third positioning arm, and a clamp. The column is mounted on the operating table. One end of the first positioning arm is rotatably connected to the column via a first damping shaft. One end of the second positioning arm is rotatably connected to the other end of the first positioning arm via a second damping shaft. One end of the third positioning arm is rotatably connected to the other end of the second positioning arm via a third damping shaft. The clamp is rotatably connected to the other end of the third positioning arm via a fourth damping shaft. The clamp is used to hold the scanning head of the handheld X-ray machine. The first, second, third, and fourth damping shafts are all equipped with angle encoders. The angle encoders are electrically connected to the controller, and the controller is electrically connected to the horizontal movement mechanism.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] In the magnetically controlled electric snare system of the present invention, the snare device uses an electrode snare that can be attracted by magnetic force. The electromagnet's magnetism attracts the electrode snare from outside the body, causing the lesion tissue inside the electrode snare to bulge. This facilitates the electrode snare to securely fasten the lesion tissue. Compared with the method of using a syringe to inject saline to bulge the lesion tissue, this system is simpler for treating lesions or polyps with a flatter shape, can significantly shorten the operation time, and reduce patient suffering. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained by analyzing these drawings without creative effort.

[0019] Figure 1 A schematic diagram of an ideal polyp tissue;

[0020] Figure 2 This is a schematic diagram of a lesion or polyp with a relatively flat shape.

[0021] Figure 3 A schematic diagram illustrating the process of injecting physiological saline into a syringe.

[0022] Figure 4 A schematic diagram illustrating the process of securing the electrode loop of an existing snare to the diseased tissue;

[0023] Figure 5 A schematic diagram of the current process of energizing and retracting the electrode snare of an existing snare.

[0024] Figure 6 A schematic diagram of the electrode snare of an existing snare after removing diseased tissue;

[0025] Figure 7 This is a schematic diagram of the magnetically controlled electric coil system in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the snare device in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram illustrating the process of removing diseased tissue using the magnetically controlled electric snare system in an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the cross-sectional structure of the electrode ring portion in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the lesion tissue compressed within the electrode loop in an embodiment of the present invention.

[0030] Figure 12 This is a schematic diagram of the structure of the electrode ring (including the developing area) in an embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the magnetically controlled electric snare system (including the horizontal moving mechanism) in an embodiment of the present invention;

[0032] Figure 14 This is a top view of the horizontal moving mechanism in an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the magnetically controlled electric snare system (including the positioning frame) in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Snare; 2. Electromagnet; 3. Operating table; 4. Horizontal movement mechanism; 5. Positioning gantry; 6. Handheld X-ray machine;

[0036] 11. Electrode ring; 12. Handle; 13. Pull rope; 14. Bourdon tube; 15. Pull ring; 16. Developing area;

[0037] 21. Current controller;

[0038] 31. Move the direction buttons;

[0039] 41. X-axis slide rail; 42. X-axis threaded rod; 43. X-axis moving plate; 44. X-axis motor; 45. Y-axis slide rail; 46. Y-axis threaded rod; 47. Y-axis moving plate; 48. Y-axis motor; 49. Mounting bracket;

[0040] 51. Column; 52. First positioning arm; 53. Second positioning arm; 54. Third positioning arm; 55. Clamp;

[0041] 61. Scanning head;

[0042] 100. Mucosa; 200. Submucosa; 300. Muscularis propria; 400. Lesion. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments analyzed and obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The purpose of this invention is to provide a magnetically controlled electric snare system to solve the problems existing in the prior art. The snare uses an electrode snare that can be attracted by magnetic force. The magnetism of an electromagnet attracts the electrode snare from outside the body, causing the lesion tissue inside the electrode snare to bulge. This facilitates the electrode snare to securely lock the lesion tissue. Compared with the method of using a syringe to inject saline to bulge the lesion tissue, this system is simpler to treat lesions or polyps with a relatively flat shape, can significantly shorten the operation time, and reduce patient suffering.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Note: In this article, "proximal end" refers to the end closer to the operator, and "distal end" refers to the end farther from the operator.

[0047] like Figures 1 to 15 As shown, this embodiment provides a magnetically controlled electric snare system, including a snare device 1 and an electromagnet 2. The snare device 1 includes an electrode snare 11, which is used to loop around the surface of the lesion tissue and can be attracted by magnetic force. The electromagnet 2 is used to provide magnetic force outside the body, which is required to attract the electrode snare 11 to move towards the deeper layers of the lesion tissue.

[0048] Working principle:

[0049] First, the electrode loop 11 is inserted into the lesion tissue using an endoscope, and the electrode loop 11 is made to adhere to the surface of the lesion tissue (such as the mucosa 100), so that the lesion 400 is within the range of the electrode loop 11. Then, an electromagnet 2 is placed outside the body at the location of the lesion tissue, and current is applied to the electromagnet 2. The current is adjusted to achieve a suitable magnetic force to attract the electrode loop 11 towards the deeper layers of the lesion tissue (the location of the intrinsic muscle layer 300), thereby compressing the lesion tissue and causing the lesion tissue containing the lesion 400 to bulge (the mucosa 100 and submucosal layer 200 bulge). The electrode loop 11 is then tightened to secure the bulging area. Next, the electrode loop 11 is energized again, and the tightening of the electrode loop 11 continues, thus removing the lesion tissue. The electromagnet 2 can be moved by hand or by mechanical control. Mechanical control is described below. Handheld electromagnet 2 is more portable than mechanical movement, but mechanical control eliminates manual operation and reduces labor costs.

[0050] This magnetically controlled electro-electro-snatch system utilizes magnetism to retrieve tissue from an external auxiliary snare. Compared to the method of injecting saline solution with a syringe to elevate the lesion tissue, it is simpler, significantly shortens the operation time, and reduces patient discomfort. Using an electromagnet, compared to a regular magnet, allows for controllable magnetic force, preventing insufficient or excessive force that could cause the electrode snare 11 to directly cut through the lesion tissue (mucosa 100).

[0051] In one embodiment, the electrode ring 11 is embedded with a ferromagnet or the electrode ring 11 is made directly of a ferromagnetic material so that it can be attracted by the electromagnet 2.

[0052] In one embodiment, the electrode loop 11 has an elliptical cross-section, with the major axis of the ellipse parallel to the annular axis of the electrode loop 11. That is, when the electrode loop 11 is placed on the surface of the lesion tissue, primarily the major axis end of the ellipse contacts the surface of the lesion tissue. The elliptical shape, compared to a circular shape, is more conducive to applying pressure to the surface of the lesion tissue (mucosa 100), making it easier to bulge. However, it should be noted that the major axis end of the ellipse should not be too narrow, lest it puncture the surface of the lesion tissue (mucosa 100). Of course, an elliptical cross-section for the electrode loop 11 is only a preferred embodiment; the use of a circular cross-section for the electrode loop 11 is not excluded.

[0053] In one embodiment, the snare 1 further includes a handle 12, a pull rope 13, a spring tube 14, and a pull ring 15. The distal end of the pull rope 13 is connected to the electrode snare 11, and the proximal end of the pull rope 13 is connected to the pull ring 15. The spring tube 14 and the handle 12 are both fitted onto the pull rope 13, with the proximal end of the spring tube 14 connected to the distal end of the handle 12. In use, the operator uses one hand to operate the handle 12 and the other hand to operate the pull ring 15, thereby achieving the tightening and loosening of the pull ring 15.

[0054] In one embodiment, the magnetically controlled electric coil system further includes a current controller 21, which can adjust the magnitude of the current supplied to the electromagnet 2, thereby controlling the magnitude of the magnetic force of the electromagnet 2.

[0055] In one embodiment, both the distal and proximal ends of the electrode loop 11 are provided with a radiopaque area 16. The radiopaque area 16 is made of radiopaque material, which facilitates the viewing of the position of the electrode loop 11 using X-rays, allows for adjustment of the position of the electrode loop 11 in conjunction with an endoscope, and provides a reference for the position of the electromagnet 2, making it easy to move the electromagnet 2 from outside the body to the position of the electrode loop 11, i.e., to the position of the lesion tissue.

[0056] In one embodiment, the magnetically controlled electric snare system further includes an operating table 3. A horizontal moving mechanism 4 is installed at the bottom of the operating table 3. An electromagnet 2 can then be mounted on the horizontal moving mechanism 4, and the electromagnet 2 is driven by the horizontal moving mechanism 4 to move horizontally to the position corresponding to the lesion tissue. This eliminates the need for manual adjustment of the electromagnet 2, saving labor costs.

[0057] In one embodiment, the horizontal moving mechanism 4 includes an x-direction moving unit and a y-direction moving unit. The x-direction moving unit includes an x-direction slide rail 41, an x-direction threaded rod 42, an x-direction moving plate 43, and an x-direction motor 44. Both the x-direction slide rail 41 and the x-direction motor 44 are fixed to the bottom of the operating table 3, and the x-direction threaded rod 42 is rotatably connected to the bottom of the operating table 3. Both the x-direction slide rail 41 and the x-direction threaded rod 42 extend along the length of the operating table 3. The x-direction moving plate 43 is slidably connected to the x-direction slide rail 41 and threadedly connected to the x-direction threaded rod 42, which is driven to rotate by the x-direction motor 44. The y-direction moving unit includes a y-direction slide rail 45, a y-direction threaded rod 46, a y-direction moving plate 47, and a y-direction motor 48. Both the y-direction slide rail 45 and the y-direction motor 48 are fixed to the x-direction moving plate 43, and the y-direction threaded rod 46 is rotatably connected to the x-direction moving plate 43. Both the y-axis slide rail 45 and the y-axis threaded rod 46 extend along the width of the operating table 3. A y-axis moving plate 47 is slidably connected to the y-axis slide rail 45 and threadedly connected to the y-axis threaded rod 46, which is driven to rotate by a y-axis motor 48. An electromagnet 2 is mounted on the y-axis moving plate 47.

[0058] Working principle:

[0059] The x-axis motor 44 drives the x-axis threaded rod 42 to rotate. The x-axis moving plate 43, in thread engagement with the x-axis threaded rod 42, moves along the x-axis slide rail 41, thereby moving the y-axis moving unit and electromagnet 2 along the length of the operating table 3. The y-axis motor 48 drives the y-axis threaded rod 46 to rotate. The y-axis moving plate 47, in thread engagement with the y-axis threaded rod 46, moves along the y-axis slide rail 45, thereby moving electromagnet 2 along the width of the operating table 3. This allows the electromagnet 2 to move horizontally below the operating table 3 to align with the diseased tissue.

[0060] In one embodiment, a mounting bracket 49 is installed at the bottom of both the head and foot of the operating table 3. An x-axis slide rail 41 is mounted on the mounting bracket 49. An x-axis motor 44 is fixed to one of the mounting brackets 49, with its motor shaft fixedly connected to one end of an x-axis threaded rod 42. The other end of the x-axis threaded rod 42 is rotatably connected to the other mounting bracket 49 via a bearing. A y-axis slide rail 45 is mounted on an x-axis moving plate 43. The motor shaft of a y-axis motor 48 is fixedly connected to one end of a y-axis threaded rod 46, with the other end of the y-axis threaded rod 46 rotatably mounted on the x-axis moving plate 43 via a bearing.

[0061] In one embodiment, the operating table 3 is equipped with a movement direction button 31, which is electrically connected to the horizontal movement mechanism 4. The movement direction button 31 can control the horizontal movement mechanism 4 to move horizontally along with the electromagnet 2. Specifically, the movement direction button 31 includes four buttons: forward, backward, left, and right. The forward button drives the x-axis motor 44 to rotate forward, enabling the x-axis moving plate 43 to move towards the head of the bed. The backward button drives the x-axis motor 44 to rotate backward, enabling the x-axis moving plate 43 to move towards the foot of the bed. The left and right buttons can drive the y-axis moving plate 47 to rotate forward and backward, respectively, enabling the y-axis moving plate 47 to move left and right along the width of the bed.

[0062] In one embodiment, the system further includes a positioning frame 5, a handheld X-ray machine 6, and a controller. The positioning frame 5 includes a column 51, a first positioning arm 52, a second positioning arm 53, a third positioning arm 54, and a clamp 55. The column 51 is vertically mounted on the operating table 3. One end of the first positioning arm 52 is rotatably connected to the column 51 via a first damping shaft. One end of the second positioning arm 53 is rotatably connected to the other end of the first positioning arm 52 via a second damping shaft. One end of the third positioning arm 54 is rotatably connected to the other end of the second positioning arm 53 via a third damping shaft. The clamp 55 is rotatably connected to the other end of the third positioning arm 54 via a fourth damping shaft. The clamp 55 is used to hold the scanning head 61 of the handheld X-ray machine 6. The first, second, third, and fourth damping shafts are all equipped with angle encoders. The angle encoders are electrically connected to the controller, and the controller is electrically connected to the horizontal movement mechanism 4. The use of a damping pivot is to provide a certain damping force between each rotation point, so that the first positioning arm 52, the second positioning arm 53, the third positioning arm 54 and the clamp 55 can maintain the angle after rotation.

[0063] Working principle:

[0064] The scanning head 61 of the handheld X-ray machine 6 is mounted on the clamp 55, and then the clamp 55 is pulled by hand to move to the operating table 3 to scan the location of the lesion tissue. Under the imaging of the imaging zone 16, the location of the electrode loop 11 can be quickly found. Specifically: during the pulling of the clamp 55, the first positioning arm 52, the second positioning arm 53, and the third positioning arm 54 will rotate adaptively, driving the first damping shaft, the second damping shaft, the third damping shaft, and the fourth damping shaft to rotate accordingly. The rotation angle of each damping shaft is obtained through the angle encoder. Combined with the spatial coordinate system of the position of the column 51 (taking the connection point between the column 51 and the operating table 3 as the origin of the spatial coordinate system), and then combined with the dimensions of the column 51, the first positioning arm 52, the second positioning arm 53, and the third positioning arm 54, the spatial coordinate system (x-axis, y-axis, and z-axis) of the position of the scanning head 61 after movement can be obtained through the software in the controller. Thus, the planar coordinate system (x-axis and y-axis) of the location of the electrode loop 11 can be obtained. The controller transmits the planar coordinate system of the electrode ring 11 to the horizontal moving mechanism 4, which in turn drives the electromagnet 2 to move along the planar coordinate system (x and y directions). This achieves automatic movement and alignment of the electromagnet 2, eliminating the need for control via the movement direction button 31.

[0065] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A magnetic control loop system, characterized in that, The snare includes an electrode snare for looping around the surface of the lesion tissue, and the electrode snare can be attracted by magnetic force, and the electromagnet is used to provide magnetic force outside the body to attract the electrode snare to move in the direction of the deep layer of the lesion tissue. The bottom of the operating bed is provided with a horizontal movement mechanism for driving the electromagnet to move horizontally. The operating bed is further provided with a handheld X-ray machine, a positioning frame, and a controller.

2. The magnetic control loop system according to claim 1, wherein, The positioning frame includes a stand, a first positioning arm, a second positioning arm, a third positioning arm, and a clamp.

3. The magnetic control loop system according to claim 1 or 2, characterized in that The stand is installed on the operating bed.

4. The magnetic control loop system of claim 1, wherein, One end of the first positioning arm is rotatably connected to the stand through a first damping pivot.

5. The magnetic control loop system according to claim 4, wherein, One end of the second positioning arm is rotatably connected to the other end of the first positioning arm through a second damping pivot.

6. The magnetic control loop system of claim 1, wherein, One end of the third positioning arm is rotatably connected to the other end of the second positioning arm through a third damping pivot. The clamp is rotatably connected to the other end of the third positioning arm through a fourth damping pivot. The clamp is used to hold the scanning head of the handheld X-ray machine. The first damping pivot, the second damping pivot, the third damping pivot, and the fourth damping pivot are all equipped with angle encoders. The angle encoders are electrically connected to the controller. The controller is electrically connected to the horizontal movement mechanism. The software in the controller calculates the spatial coordinate system of the position of the scanning head after movement and the planar coordinate system of the position of the electrode snare. The controller transmits the planar coordinate system of the position of the electrode snare to the horizontal movement mechanism to drive the electromagnet to move along the planar coordinate system, realizing automatic movement and alignment of the electromagnet. The electrode snare is embedded with a ferromagnetic body or made of a ferromagnetic material. The cross-section of the electrode snare is elliptical, and the major axis of the ellipse is parallel to the ring axis of the electrode snare. The snare further includes a handle, a pulling rope, a spring tube, and a pull ring. The distal end of the pulling rope is connected to the electrode snare. The proximal end of the pulling rope is connected to the pull ring. The spring tube and the handle are both sleeved on the pulling rope. The controller is further provided with a current controller. The distal end and the proximal end of the electrode snare are both provided with a developing area.

7. The magnetic control loop system of claim 1, wherein, The horizontal moving mechanism comprises an x-direction moving unit and a y-direction moving unit; the x-direction moving unit comprises an x-direction slide rail, an x-direction threaded rod, an x-direction moving plate and an x-direction motor, the x-direction slide rail and the x-direction motor are both fixed on the bottom of the operating bed, the x-direction threaded rod is rotationally connected to the bottom of the operating bed, the x-direction slide rail and the x-direction threaded rod both extend along the length direction of the operating bed, the x-direction moving plate is slidably connected to the x-direction slide rail, the x-direction moving plate is threadedly connected to the x-direction threaded rod, and the x-direction threaded rod is driven to rotate by the x-direction motor; the y-direction moving unit comprises a y-direction slide rail, a y-direction threaded rod, a y-direction moving plate and a y-direction motor, the y-direction slide rail and the y-direction motor are both fixed on the x-direction moving plate, the y-direction threaded rod is rotationally connected to the x-direction moving plate, the y-direction slide rail and the y-direction threaded rod both extend along the width direction of the operating bed, the y-direction moving plate is slidably connected to the y-direction slide rail, and the y-direction moving plate is threadedly connected to the y-direction threaded rod; the electromagnet is mounted on the y-direction moving plate, and the y-direction threaded rod is driven to rotate by the y-direction motor.

8. The magnetic control loop system of claim 1, wherein, A moving direction button is arranged on the operating bed and electrically connected with the horizontal moving mechanism.

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