Magnetic control electric ring sleeve system

Abstract

The invention discloses a magnetic control electric snare system, and belongs to the technical field of medical equipment, the magnetic control electric snare system comprises a snare and an electromagnet, the snare comprises an electrode snare, the electrode snare is used for annularly sleeving the surface of lesion tissue, and the electrode snare can be attracted by magnetic attraction force; the electromagnet is used for providing magnetic attraction force for attracting the electrode ring sleeve to move towards the deep layer direction of the diseased tissue in vitro. According to the snare, the electrode snare capable of being attracted by magnetic attraction force is adopted, the electrode snare is attracted from the outside of a body through the magnetism of the electromagnet, the electrode snare is driven to press the lesion tissue in the electrode snare to enable the lesion tissue to protrude, and then the electrode snare can be assisted to firmly sleeve the lesion tissue. According to the system, the mode of treating a focus or polyp with a flat appearance is simpler, the operation time can be remarkably shortened, and the pain of a patient is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a magnetically controlled electric snare system. Background Art

[0002] When the hospital performs EMR surgery (endoscopic mucosal resection), the snare is pushed to the lesion through the endoscope, the electrode snare is extended to take the lesion tissue or polyp, and then the electrode snare is tightened while the power is turned on, thereby removing the lesion tissue or polyp. Figure 1 As shown. But Figure 1 The polyp tissue in the tube is in an ideal shape, with a pedicle and a long root, which makes it easy for doctors to remove and remove it. However, most lesions or polyps are flat in shape and difficult to remove. Figure 2 shown.

[0003] Therefore, EMR surgery usually uses a needle to perform submucosal injection to raise the diseased tissue, and then perform extraction and resection; Figure 3 As shown, a local injection of physiological saline into the submucosal layer 200 between the mucosa 100 and the muscularis propria 300 is performed through an injection needle to form a local blister below the lesion 400 of the mucosa 100 and lift up the lesion tissue of the mucosa 100; then, as shown in FIG. Figure 4 As shown, the electrode snare 11 is fastened to the diseased tissue; then, as shown Figure 5 As shown, the electrode snare 11 is energized and the electrode snare is further tightened; finally, as shown Figure 6 As shown, the diseased tissue will be 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 pain. Summary of the Invention

[0005] The purpose of the present 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 attraction. The magnetic force of the electromagnet assists the electrode snare to snare the diseased tissue. Compared with the method of injecting physiological saline with a syringe to cause the diseased tissue to bulge, this method is simpler to treat flat lesions or polyps, 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, comprising a snare and an electromagnet. The snare comprises an electrode snare, which is used to be looped around the surface of diseased tissue and can be attracted by magnetic attraction. The electromagnet is used to provide an external magnetic attraction force to attract the electrode snare to move toward the deep layer of the diseased tissue.

[0007] Preferably, a ferromagnet is embedded in the electrode ring or the electrode ring is made of ferromagnetic material.

[0008] Preferably, 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.

[0009] Preferably, 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 mounted on the pulling rope, and the proximal end of the spring tube is connected to the distal end of the handle.

[0010] Preferably, a current controller is further included, and the magnitude of the magnetic force of the electromagnet is regulated by the current controller.

[0011] Preferably, both the distal end and the proximal end of the electrode snare are provided with a developing area.

[0012] Preferably, an operating table is further included, and a horizontal movement mechanism for driving the electromagnet to move horizontally is installed at the bottom of the operating table.

[0013] Preferably, the horizontal movement mechanism includes an x-direction movement unit and a y-direction movement unit; the x-direction movement unit includes an x-direction slide rail, an x-direction threaded rod, an x-direction movement 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 bed, the x-direction threaded rod is rotatably connected to the bottom of the operating bed, the x-direction slide rail and the x-direction threaded rod both extend along the bed length direction of the operating bed, the x-direction movement plate is slidably connected to the x-direction slide rail, the x-direction movement plate is threadedly connected to the x-direction threaded rod, and the x-direction threaded rod is connected to the x-direction The motor drives the rotation; 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 x-direction moving plate, the y-direction threaded rod is rotatably 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.

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

[0015] Preferably, it also 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 installed on the operating bed, one end of the first positioning arm is rotatably connected to the column through a first damping shaft, one end of the second positioning arm is rotatably connected to the other end of the first positioning arm through a second damping shaft, one end of the third positioning arm is rotatably connected to the other end of the second positioning arm through a third damping shaft, the clamp is rotatably connected to the other end of the third positioning arm through a fourth damping shaft, the clamp is used to clamp the scanning head of the handheld X-ray machine, the first damping shaft, the second damping shaft, the third damping shaft and the fourth damping shaft are all equipped with angle encoders, the angle encoder is electrically connected to the controller, and the controller is electrically connected to the horizontal moving mechanism.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: In the magnetically controlled electric snare system of the present invention, the snare employs an electrode snare that can be attracted by magnetic attraction. The magnetism of the electromagnet draws the electrode snare from outside the body, forcing the electrode snare to press against the diseased tissue, causing it to bulge. This assists the electrode snare in trapping the diseased tissue. Compared to using a syringe to inject saline solution to cause the diseased tissue to bulge, this system simplifies the treatment of flatter lesions or polyps, significantly shortening surgical time and reducing patient pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 the analysis of these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of polyp tissue in its ideal form; Figure 2 This is a schematic diagram of a lesion or polyp with a relatively flat appearance; Figure 3 Schematic diagram of the process of local injection of normal saline with a syringe; Figure 4 A schematic diagram of the process of an electrode of a conventional snare trapping a diseased tissue; Figure 5 A schematic diagram of an existing snare device during the electrode snare energization and converging process; Figure 6 A schematic diagram of an existing snare device after the electrode snare has removed the diseased tissue; Figure 7Schematic diagram of the structure of the magnetically controlled electric snare system in an embodiment of the present invention; Figure 8 This is a schematic structural diagram of a snare according to an embodiment of the present invention; Figure 9 Schematic diagram of the magnetically controlled electric snare system in the process of removing diseased tissue according to an embodiment of the present invention; Figure 10 Schematic diagram of the cross-section structure of the electrode snare portion in an embodiment of the present invention; Figure 11 Schematic diagram of the structure of the electrode snare pressing the diseased tissue in an embodiment of the present invention Figure 12 Schematic diagram of the structure of the electrode housing (including the developing area) in an embodiment of the present invention; Figure 13 Schematic diagram of the structure of the magnetically controlled electric snare system (including the horizontal movement mechanism) in an embodiment of the present invention; Figure 14 Schematic diagram of the top view of the horizontal moving mechanism in an embodiment of the present invention; Figure 15 Schematic diagram of the structure of the magnetically controlled electric snare system (including the positioning frame) in an embodiment of the present invention.

[0019] Description of reference numerals: 1. Snare; 2. Electromagnet; 3. Operating table; 4. Horizontal movement mechanism; 5. Positioning frame; 6. Handheld X-ray machine; 11. Electrode snare; 12. Handle; 13. Pull rope; 14. Spring tube; 15. Pull ring; 16. Developing area; 21. Current controller; 31. Move direction button; 41. X-axis slide rail; 42. X-axis threaded rod; 43. X-axis movable plate; 44. X-axis motor; 45. Y-axis slide rail; 46. Y-axis threaded rod; 47. Y-axis movable plate; 48. Y-axis motor; 49. Mounting bracket; 51. Column; 52. First positioning arm; 53. Second positioning arm; 54. Third positioning arm; 55. Clamp; 61. Scanning head; 100, mucosa; 200, submucosa; 300, muscularis propria; 400, lesion. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments analyzed and obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] The present invention aims to provide a magnetically controlled electric snare system to address the problems of the prior art. The snare utilizes an electrode snare that can be attracted by magnetic attraction. The magnetism of the electromagnet draws the electrode snare from outside the body, forcing the electrode snare to press against the diseased tissue, causing it to bulge. This assists the electrode snare in trapping the diseased tissue. Compared to using a syringe to inject saline solution to cause the diseased tissue to bulge, this system is simpler for treating flatter lesions or polyps, significantly shortening surgical time and reducing patient pain.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Note: The proximal end mentioned in this article refers to the end close to the operator, and the distal end refers to the end farthest from the operator.

[0024] like Figures 1 to 15 As shown, this embodiment provides a magnetically controlled electric snare system comprising a snare 1 and an electromagnet 2. The snare 1 includes an electrode snare 11, which is designed to be wrapped around the surface of the lesion and attracted by magnetic attraction. The electromagnet 2 is designed to provide an external magnetic attraction, which is required to pull the electrode snare 11 deeper into the lesion.

[0025] Working principle: First, an electrode snare 11 is inserted into the lesion through an endoscope and placed against the surface of the lesion (e.g., the mucosa 100), with the lesion 400 located within the snare's reach. Then, an electromagnet 2 is placed externally at the location corresponding to the lesion. Current is applied to the electromagnet 2, and the current is adjusted to achieve an appropriate magnetic force. This attracts the snare 11 toward the deeper layers of the lesion (the muscularis propria 300). This internal pressure causes the lesion 400 to bulge (the mucosa 100 and submucosa 200), converging the snare 11 to secure the bulge. Then, the snare 11 is energized and continues to constrict, resecting the lesion. The electromagnet 2 can be moved by hand or mechanical control. Mechanical control is discussed below. Handheld electromagnets 2 are more portable than mechanically controlled devices, but mechanical control eliminates manual labor and reduces labor costs.

[0026] This magnetically controlled electric snare system utilizes magnetism to extract tissue from an external snare. Compared to injecting saline solution to elevate the affected tissue, this method is simpler, significantly shortening surgical time and minimizing patient pain. Compared to conventional magnets, the magnetic force of electromagnets can be controlled, preventing insufficient or excessive magnetic force from causing the electrode snare 11 to directly cut the affected tissue (mucosa 100).

[0027] In one embodiment, the electrode collar 11 is embedded with a ferromagnetic body or is directly made of a ferromagnetic material so as to be attracted by the electromagnet 2 .

[0028] In one embodiment, the electrode snare 11 has an elliptical cross-section, with the long axis of the ellipse parallel to the annular axis of the electrode snare 11. Specifically, when the electrode snare 11 is applied to the surface of the diseased tissue, the long axis of the ellipse primarily contacts the surface of the diseased tissue. Compared to a circular shape, the elliptical shape facilitates internal pressure on the surface of the diseased tissue (mucosa 100), causing it to bulge more easily. However, it is important to note that the long axis of the ellipse should not be too narrow, thereby piercing the surface of the diseased tissue (mucosa 100). Of course, the elliptical cross-section of the electrode snare 11 is merely a preferred embodiment, and circular cross-sections are not excluded.

[0029] In one embodiment, the snare 1 further comprises a handle 12, a pull cord 13, a spring tube 14, and a pull ring 15. The distal end of the pull cord 13 is connected to the electrode snare 11, while the proximal end of the pull cord 13 is connected to the pull ring 15. The spring tube 14 and handle 12 are both sleeved onto the pull cord 13, with the proximal end of the spring tube 14 connected to the distal end of the handle 12. During use, the operator manipulates the handle 12 with one hand and the pull ring 15 with the other hand, thereby tightening and releasing the pull ring 15.

[0030] In one embodiment, the magnetically controlled electric snare system further includes a current controller 21 . The current controller 21 can adjust the current supplied to the electromagnet 2 , thereby regulating the magnetic force of the electromagnet 2 .

[0031] In one embodiment, imaging areas 16 are provided at both the distal and proximal ends of the electrode snare 11. The imaging areas 16 are constructed of imaging material, which facilitates X-ray inspection of the electrode snare 11 position, allows for endoscope adjustment of the electrode snare 11 position, and provides a reference for positioning the electromagnet 2, facilitating external alignment of the electromagnet 2 with the electrode snare 11, i.e., the location of the diseased tissue.

[0032] In one embodiment, the magnetically controlled electric snare system further includes an operating table 3, the bottom of which is mounted a horizontal movement mechanism 4. The electromagnet 2 is then mounted on the horizontal movement mechanism 4, which drives the electromagnet 2 to move horizontally to a position corresponding to the location of the diseased tissue. This eliminates the need for manual adjustment of the electromagnet 2, saving labor costs.

[0033] In one embodiment, the horizontal movement mechanism 4 includes an x-direction movement unit and a y-direction movement unit. The x-direction movement unit includes an x-direction slide rail 41, an x-direction threaded rod 42, an x-direction movement plate 43, and an x-direction motor 44. The x-direction slide rail 41 and the x-direction motor 44 are both fixed to the bottom of the operating bed 3, and the x-direction threaded rod 42 is rotatably connected to the bottom of the operating bed 3. The x-direction slide rail 41 and the x-direction threaded rod 42 both extend along the length of the operating bed 3. The x-direction movement plate 43 is slidably connected to the x-direction slide rail 41, which is threadedly connected to the x-direction threaded rod 42. The x-direction threaded rod 42 is driven for rotation by the x-direction motor 44. The y-direction movement unit includes a y-direction slide rail 45, a y-direction threaded rod 46, a y-direction movement plate 47, and a y-direction motor 48. The y-direction slide rail 45 and the y-direction motor 48 are both fixed to the x-direction movement plate 43, and the y-direction threaded rod 46 is rotatably connected to the x-direction movement plate 43. Both the y-direction slide rail 45 and the y-direction threaded rod 46 extend along the width of the operating bed 3. A y-direction movable plate 47 is slidably connected to the y-direction slide rail 45. The y-direction movable plate 47 is threadedly connected to the y-direction threaded rod 46. The y-direction threaded rod 46 is driven for rotation by a y-direction motor 48. The electromagnet 2 is mounted on the y-direction movable plate 47.

[0034] Working principle: The x-direction motor 44 rotates the x-direction threaded rod 42. The x-direction movable plate 43, in threaded engagement with the x-direction threaded rod 42, moves along the x-direction slide rail 41, thereby driving the y-direction movable unit and the electromagnet 2 to move along the length of the operating bed 3. The y-direction motor 48 rotates the y-direction threaded rod 46. The y-direction movable plate 47, in threaded engagement with the y-direction threaded rod 46, moves along the y-direction slide rail 45, thereby driving the electromagnet 2 to move along the width of the operating bed 3. This enables the electromagnet 2 to move horizontally below the operating bed 3 to correspond to the diseased tissue.

[0035] In one embodiment, a mounting bracket 49 is mounted on the bottom of each of the head and foot sections of the operating bed 3. The x-direction slide rail 41 is mounted on the mounting brackets 49. The x-direction motor 44 is fixed to one of the mounting brackets 49. The motor shaft of the x-direction motor 44 is fixedly connected to one end of the x-direction threaded rod 42. The other end of the x-direction threaded rod 42 is rotatably connected to the other mounting bracket 49 via a bearing. The y-direction slide rail 45 is mounted on the x-direction movable plate 43. The motor shaft of the y-direction motor 48 is fixedly connected to one end of the y-direction threaded rod 46. The other end of the y-direction threaded rod 46 is rotatably connected to the x-direction movable plate 43 via a bearing.

[0036] In one embodiment, the operating bed 3 is provided with a movement direction button 31 electrically connected to the horizontal movement mechanism 4. The movement direction button 31 controls the horizontal movement of the horizontal movement mechanism 4 and the electromagnet 2. Specifically, the movement direction buttons 31 include four buttons: forward, backward, left, and right. The forward button drives the x-axis motor 44 in forward rotation, causing the x-axis moving plate 43 to move toward the head of the bed. The backward button drives the x-axis motor 44 in reverse rotation, causing the x-axis moving plate 43 to move toward the foot of the bed. The left and right buttons respectively drive the y-axis moving plate 47 in forward and reverse rotation, causing the y-axis moving plate 47 to move left and right along the width of the bed.

[0037] In one embodiment, the operating table 3 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 clamp the scanning head 61 of the handheld X-ray machine 6. The first, second, third, and fourth damping shafts are each equipped with an angle encoder, which is electrically connected to the controller, which is in turn electrically connected to the horizontal movement mechanism 4. The damping shaft is used 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 be kept at the angle after rotation.

[0038] Working principle: The scanning head 61 of the handheld X-ray device 6 is mounted on the fixture 55. The fixture 55 is then manually pulled toward the operating table 3 to scan the lesioned tissue. Under development in the development area 16, the electrode snare 11 can be quickly located. Specifically, as the fixture 55 is pulled, the first, second, third, and fourth positioning arms 52, 53, and 54 adaptively rotate, driving the first, second, third, and fourth damping shafts to rotate accordingly. An angle encoder determines the rotation angle of each damping shaft. Combined with the spatial coordinate system of the column 51 (with the connection point between the column 51 and the operating table 3 as the origin of the spatial coordinate system), the software within the controller calculates the spatial coordinate system (x, y, and z directions) of the scan head 61 after its movement, thereby determining the planar coordinate system (x and y directions) of the electrode snare 11. The controller transmits the plane coordinate system of the position of the electrode snare 11 to the horizontal movement mechanism 4, which then drives the electromagnet 2 to move along the plane coordinate system (x and y directions). This automatically moves and aligns the electromagnet 2, eliminating the need for control via the movement direction button 31.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A magnetically controlled electric snare system, characterized in that: The invention comprises a snare and an electromagnet. The snare comprises an electrode snare, which is used to be looped around the surface of the diseased tissue and can be attracted by magnetic attraction. The electromagnet is used to provide a magnetic attraction outside the body to attract the electrode snare to move toward the deep layer of the diseased tissue.

2. The magnetic control electric snare system according to claim 1, characterized in that: The electrode ring is embedded with a ferromagnetic body or is made of a ferromagnetic material.

3. The magnetic control electric snare system according to claim 1 or 2, characterized in that: 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.

4. The magnetic control electric snare system according to claim 1, characterized in that: The snare also 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, and the proximal end of the pulling rope is connected to the pull ring. The spring tube and the handle are both mounted on the pulling rope, and the proximal end of the spring tube is connected to the distal end of the handle.

5. The magnetic control electric snare system according to claim 4, characterized in that: It also includes a current controller, and the magnitude of the magnetic force of the electromagnet is regulated by the current controller.

6. The magnetic control electric snare system according to claim 1, characterized in that: The distal end and the proximal end of the electrode snare are both provided with developing areas.

7. The magnetic control electric snare system according to claim 6, characterized in that: The operating table is also included. A horizontal movement mechanism for driving the electromagnet to move horizontally is installed at the bottom of the operating table.

8. The magnetic control snare system according to claim 7, characterized in that: The horizontal movement mechanism includes an x-direction movement unit and a y-direction movement unit; the x-direction movement unit includes an x-direction slide rail, an x-direction threaded rod, an x-direction movement 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 bed, the x-direction threaded rod is rotatably 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 movement plate is slidably connected to the x-direction slide rail, the x-direction movement plate is threadedly connected to the x-direction threaded rod, and the x-direction threaded rod is connected to the x-direction motor through the x-direction motor. Drive to rotate; 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 x-direction moving plate, the y-direction threaded rod is rotatably 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.

9. The magnetic control electric snare system according to claim 7, characterized in that: The operating table is provided with a movement direction button, and the movement direction button is electrically connected to the horizontal movement mechanism.

10. The magnetic control electric snare system according to claim 7, characterized in that: It also 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 installed on the operating bed, one end of the first positioning arm is rotatably connected to the column through a first damping shaft, one end of the second positioning arm is rotatably connected to the other end of the first positioning arm through a second damping shaft, one end of the third positioning arm is rotatably connected to the other end of the second positioning arm through a third damping shaft, the clamp is rotatably connected to the other end of the third positioning arm through a fourth damping shaft, the clamp is used to clamp the scanning head of the handheld X-ray machine, the first damping shaft, the second damping shaft, the third damping shaft and the fourth damping shaft are all equipped with angle encoders, the angle encoder is electrically connected to the controller, and the controller is electrically connected to the horizontal moving mechanism.

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