A plasma resection mirror

Abstract

The present invention discloses a plasma electroresection mirror, which comprises a sheath assembly, an operator, an electroresection loop assembly and an electronic endoscope; the front end of the operator is provided with the sheath assembly, the sheath assembly includes an outer sheath and an inner sheath, the outer sheath is sleeved outside the inner sheath, the electronic endoscope includes a lens tube and an operating handle, the lens tube is arranged in the inner sheath, the electroresection loop assembly includes an electrode head, a connecting rod and an electrode rod, the rear end of the electrode rod is connected with a slider, the slider is slidably mounted on the operator, the slider is connected with a finger hook, and the operator is provided with a distance sensor for sensing the position of the slider; the invention uses an electronic mirror and a plasma electroresection loop in combination. The electronic imaging system is mature, the cost is low, and the process is simple; the electronic endoscope has a large field of view angle and a wide visible range; the image sensor has a small size, which can reduce the overall outer diameter size.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, especially the technical field of plasma resection scopes. Background Art

[0002] The plasma resection scope utilizes the energy generated by bipolar radio frequency to convert the electrolyte between the radio frequency knife head and the tissue into a thin layer of plasma; these high-speed moving ions have sufficient energy to break the organic molecular bonds of the target tissue, causing macromolecular substances to disintegrate into small molecular substances, generating a vaporization effect, thereby achieving the cutting of the tissue; at the same time, during the cutting process, it can also quickly close small arteries, small veins, and capillaries in the deep layer, playing an effective hemostatic role.

[0003] In the prior art, the resection scope usually uses an optical endoscope for imaging. The optical lens has a high cost, difficult process, limited field of view angle, and the thickness of the lens tube is inversely proportional to the image quality. Various technical indicators have reached a bottleneck. The patent document with the publication number CN221154288U discloses a resection scope that uses an optical endoscope for observation, and the patent document with the publication number CN215914871U discloses an electric rotary plasma resection scope that also uses an optical lens for observation.

[0004] The electronic imaging system is mature, has a low cost, and a simple process. However, currently, the electronic endoscope has not been applied to the resection scope. Because the optical lens realizes image acquisition and display by connecting to an external camera, while the camera of the electronic endoscope is located at the front end of the lens body, there are the following difficulties in applying the electronic endoscope to the resection scope:

[0005] 1. The optical frequency interference generated by the resection loop has a greater impact on the nearby camera, and the captured image is more likely to have adverse effects such as stripes or noise, resulting in an unclear image.

[0006] 2. The heat generated during the operation of the resection loop has a greater impact on the camera and is likely to damage the camera.

[0007] 3. The characteristic of the optical resection scope is that the optical lens rotates, and the camera connected to the back does not move to ensure image orientation. However, for the electronic lens, because the camera is placed in front, the camera also rotates, resulting in the captured image rotating as well. The rotation of the image will cause the doctor to have a deviation in the perception of the operation direction. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems in the prior art and propose a plasma resection scope that can solve the above problems.

[0009] To achieve the above object, the present invention provides a plasma resection mirror, comprising a sheath assembly, an operator, a resection loop assembly and an electronic endoscope; the front end of the operator is provided with the sheath assembly, the sheath assembly includes an outer sheath and an inner sheath, the outer sheath is sleeved outside the inner sheath, the electronic endoscope includes a lens tube and an operating handle, the lens tube is arranged in the inner sheath, the resection loop assembly includes an electrode head, a connecting rod and an electrode rod, the electrode head is arranged on the front side of the lens tube, the two sides of the electrode head are connected with the connecting rods, the connecting rods are connected with the electrode rods, the electrode rods are arranged on both sides of the lens tube, the rear end of the electrode rod is connected with a slider, the slider is slidably mounted on the operator, the slider is connected with a finger hook, and a distance sensor for sensing the position of the slider is arranged on the operator.

[0010] The distance sensor ensures that the resection loop can function only when it is at a specific distance from the electronic lens end. When the slider of the resection loop is within a certain range of the sensor, even if the switch of the resection loop is turned on, the resection loop cannot work, solving the problem that when the distance is too close and misoperation occurs, the high temperature of the resection loop causes damage to the electronic lens end.

[0011] Preferably, conduits are arranged on both sides of the lens tube, the electrode rods are slidably sleeved in the conduits, a lens tube is arranged at the front end of the lens tube, an image sensor is arranged in the lens tube, a protective glass is arranged on the outer surface of the lens tube, and a cut-off film is arranged on the side of the protective glass close to the image sensor.

[0012] The protective glass reduces physical damage to the image sensor and increases its service life.

[0013] The protective glass is sprayed with a film layer that cuts off specific wavelengths, eliminating or reducing interference of specific light waves on the module.

[0014] Preferably, a tip head is arranged in the lens tube, the image sensor is installed in the tip head, the diameter of the front side head of the image sensor is larger than the diameter of the rear side tail of the image sensor, the diameter of the lens tube is larger than the diameter of the lens tube and the two are smoothly transitioned through an inclined surface.

[0015] Utilizing the characteristics that the head of the image sensor is large and the rear end is a thin wire, a lens tube with the same structure is made to reasonably layout the water inlet and outlet areas, which can effectively increase the total amount of the water inlet and outlet areas.

[0016] Preferably, an installation card slot for the protective glass is arranged on the surface of the tip head, a limit slot for installing the lens tube is arranged in the middle of the installation card slot, a first bonding surface and a second bonding surface are arranged in the installation card slot, the left and right sides of the installation card slot are arc-shaped structures, the first bonding surface is bonded to the outer periphery of the bottom surface of the protective glass, the second bonding surface is bonded to the side surface of the protective glass, and a light guide beam for illumination is arranged above the tip head.

[0017] The light guide beam is located above the image sensor, and the lower end of the image sensor is a flat end.

[0018] The first bonding surface and the second bonding surface enhance the bonding firmness between the protective glass and the tip head.

[0019] Preferably, the lens tube bends downward, forming a viewing angle θ with the central axis of the inner sheath, and the installation direction of the image sensor is the same as the bending direction of the lens tube.

[0020] Preferably, the viewing angle θ is 0 to 30°.

[0021] Preferably, the gap between the inner sheath and the outer sheath is the water outlet channel; the gap between the inner sheath and the lens tube is the water inlet channel.

[0022] Preferably, the distance sensor includes a photoelectric sensor, a spring, a fixed rod, and a telescopic rod. The fixed rod is fixed on the operator. An installation groove is provided in the fixed rod. A photoelectric sensor is provided at one end of the installation groove away from the slider. A telescopic rod is slidably installed at one end of the installation groove close to the slider. The end of the telescopic rod protrudes from the fixed rod. A limiting portion is provided on the telescopic rod. A spring is provided between the limiting portion and the installation groove. When the photoelectric sensor has no induction, the electrocision ring assembly works normally; when the photoelectric sensor is triggered, the electrocision ring assembly cannot work.

[0023] Preferably, an operation button is provided on the operation handle, and a signal adapter board with an angle sensor is provided in the operation handle.

[0024] Preferably, the operation handle is arranged at the rear of the operator, and a plug assembly is connected to the rear of the operation handle through a guide tube. The plug assembly includes a power plug and a light source plug.

[0025] Advantages of the present invention: The present invention uses an electronic mirror and a plasma cutting loop in combination. The electronic imaging system is mature, with low cost and simple process; the electronic endoscope has a large field of view angle and a wide visible range; the image sensor has a small size, which can reduce the overall outer diameter size, reduce pain, or increase the water inlet and outlet area and enhance the field of view clarity under the same outer diameter size; the image orientation of the image sensor is strong and the operation is simple; a protective glass containing a cut-off film is provided to eliminate or reduce the impact of the light damage generated during the use of the plasma cutting loop on the image sensor; a distance sensor is provided in the present invention to ensure that the cutting loop can function only when it is at a specific distance from the electronic lens end, solving the problem that when the distance is too close and misoperation occurs, the high temperature of the cutting loop causes damage to the electronic lens end; an angle sensor is provided to correct the image during the rotation operation, thereby realizing the image orientation function; taking advantage of the characteristics that the head end of the image sensor is large and the rear end is a thin wire, a mirror tube with the same structure is made to increase the water inlet area. On the one hand, the blood and water caused by the operation can be replaced in time to keep the field of view clear, and on the other hand, the cut tissue can be discharged in time to avoid blocking the channel.

[0026] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. Brief Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a schematic diagram of the cutting loop assembly of the present invention;

[0029] Figure 3 is a schematic diagram of the operator of the present invention;

[0030] Figure 4 is a schematic diagram of the installation of the image sensor of the present invention;

[0031] Figure 5 is a schematic diagram of the tip of the present invention;

[0032] Figure 6 is a schematic diagram of the structure of the lens tube of the present invention;

[0033] Figure 7 is a schematic diagram of the water inlet and outlet channels of the present invention;

[0034] Figure 8 is a schematic diagram of the distance sensor of the present invention;

[0035] Figure 9 is a schematic diagram of the structure of the operating handle of the present invention.

[0036] In the figure: 1. Sheath assembly; 2. Manipulator; 3. Electrosection loop assembly; 4. Electronic endoscope; 5. Distance sensor; 6. Tip head; 7. Operating handle; 8. Power plug; 9. Light source plug; 11. Outer sheath; 12. Inner sheath; 13. Water outlet channel; 14. Water inlet channel; 31. Electrode head; 32. Connecting rod; 33. Electrode rod; 34. Slide block; 35. Finger hook; 41. Lens tube; 42. Duct; 43. Lens head tube; 44. Image sensor; 45. Protective glass; 46. Inclined plane; 51. Photoelectric sensor; 52. Spring; 53. Fixed rod; 54. Telescopic rod; 55. Installation groove; 56. Limiting part; 61. Installation clamping groove; 62. Limiting groove; 63. First bonding surface; 64. Second bonding surface; 65. Light guide beam; 71. Signal adapter board. Detailed implementation mode

[0037] Embodiment 1

[0038] Refer to Figures 1 to 7 , a plasma electrosection endoscope, comprising a sheath assembly 1, a manipulator 2, an electrosection loop assembly 3 and an electronic endoscope 4; the front end of the manipulator 2 is provided with a sheath assembly 1, the sheath assembly 1 includes an outer sheath 11 and an inner sheath 12, the outer sheath 11 is sleeved outside the inner sheath 12, the electronic endoscope 4 includes a lens tube 41 and an operating handle 7, the lens tube 41 is arranged in the inner sheath 12, the electrosection loop assembly 3 includes an electrode head 31, a connecting rod 32 and an electrode rod 33, the electrode head 31 is arranged on the front side of the lens tube 41, the two sides of the electrode head 31 are connected with a connecting rod 32, the connecting rod 32 is connected with an electrode rod 33, the electrode rod 33 is arranged on both sides of the lens tube 41, the rear end of the electrode rod 33 is connected with a slide block 34, the slide block 34 is slidably installed on the manipulator 2, the slide block 34 is connected with a finger hook 35, and the manipulator 2 is provided with a distance sensor 5 for sensing the position of the slide block 34.

[0039] Ducts 42 are arranged on both sides of the lens tube 41, the electrode rod 33 is slidably sleeved in the ducts 42, the front end of the lens tube 41 is provided with a lens head tube 43, an image sensor 44 is arranged in the lens head tube 43, a protective glass 45 is arranged on the outer surface of the lens head tube 43, and a cut-off film is arranged on one side of the protective glass 45 close to the image sensor 44.

[0040] A tip head 6 is arranged in the lens head tube 43, the image sensor 44 is installed in the tip head 6, the diameter of the front head of the image sensor 44 is larger than the diameter of the rear tail of the image sensor 44, the diameter of the lens head tube 43 is larger than the diameter of the lens tube 41 and the two are smoothly transitioned through an inclined plane 46.

[0041] The surface of the front end head 6 is provided with an installation slot 61 for the protective glass 45. A limiting slot 62 for installing the lens tube 43 is provided in the middle of the installation slot 61. A first bonding surface 63 and a second bonding surface 64 are provided in the installation slot 61. The left and right sides of the installation slot 61 are arc-shaped structures. The first bonding surface 63 is adhesively bonded to the outer periphery of the bottom surface of the protective glass 45, and the second bonding surface 64 is adhesively bonded to the side surface of the protective glass 45. A light guide beam 65 for illumination is provided above the front end head 6.

[0042] The lens tube 43 bends downward, forming a viewing angle θ with the central axis of the inner sheath 12. The installation direction of the image sensor 44 is the same as the bending direction of the lens tube 43.

[0043] The viewing angle θ is 0 to 30° to adjust the observation range.

[0044] The viewing angle ω of the image sensor has options of 90° and 120°.

[0045] The gap between the inner sheath 12 and the outer sheath 11 is the water outlet channel 13; the gap between the inner sheath 12 and the lens tube 41 is the water inlet channel 14.

[0046] The operation handle 7 is arranged at the rear of the operating device 2. A plug assembly is connected to the rear of the operation handle 7 through a guide tube. The plug assembly includes a power plug 8 and a light source plug 9.

[0047] Embodiment 2

[0048] Refer to Figure 8 , the distance sensor 5 includes a photoelectric sensor 51, a spring 52, a fixed rod 53 and a telescopic rod 54. The fixed rod 53 is fixed on the operating device 2. An installation slot 55 is provided in the fixed rod 53. A photoelectric sensor 51 is provided at one end of the installation slot 55 away from the slider 34. A telescopic rod 54 is slidably installed at one end of the installation slot 55 close to the slider 34. The end of the telescopic rod 54 protrudes from the fixed rod 53. A limiting portion 56 is provided on the telescopic rod 54. A spring 52 is provided between the limiting portion 56 and the installation slot 55; when the photoelectric sensor 51 has no induction, the electric cutting ring assembly 3 works normally; when the photoelectric sensor 51 is triggered, the electric cutting ring assembly 3 cannot work.

[0049] When the operating device is not working or has not reached the specified position, the telescopic rod is squeezed by the slider, the spring is compressed, and the tail of the telescopic rod is sensed by the photoelectric sensor. Even if the working switch for controlling the electric cutting ring assembly is turned on, the electric cutting ring assembly will not work. Only when the photoelectric sensor has no induction can the plasma electric cutting ring work normally.

[0050] Others are the same as Embodiment 1.

[0051] Embodiment 3

[0052] Refer to Figure 9 , an operation button is provided on the operation handle 7, and a signal adapter board 71 with an angle sensor is provided in the operation handle 7.

[0053] Others are the same as those in Embodiment 1.

[0054] The operation buttons include a photographing button, a video recording button, and a skin tone removal button, which can realize the functions of photographing, video recording, and skin tone removal.

[0055] During use, the rotation angle of the electronic endoscope is sensed by the angle sensor. According to the angle data provided by the angle sensor, a corresponding image rotation algorithm is used to process the captured image; common algorithms such as the rotation algorithm based on matrix transformation, which rotates the image by calculating the new positions of each pixel point in the image after rotation, so as to correct the image angle deviation caused by the rotation of the camera and keep the picture in a predetermined direction.

[0056] In the image correction system, there is a virtual interface that is synchronized with the real interface; a cross interface or a single-line interface is set on the virtual interface, and this special interface is a key element for detecting and correcting image deviation; at the same time, there is also a fixed cross reference interface that serves as a reference standard; the system senses the angle difference between the cross or single-line interface on the virtual interface and the reference cross interface through the angle sensor; when the image is offset, the virtual interface will change accordingly, resulting in an angle deviation between the cross or single-line interface on the virtual interface and the reference cross interface; the angle sensor can accurately measure this angle change and convert it into a processable information such as an electrical signal or a digital signal; the system calculates the direction and degree of the image offset according to the angle information fed back by the sensor, and then performs corresponding correction operations on the image through specific algorithms and control mechanisms, so that the images in both the real interface and the virtual interface can be restored to the correct position and angle, thus achieving the purpose of image correction.

[0057] There is a relational expression between the angle generated by the cross or single-line of the virtual interface and the static interface and the angle of the angle sensor. The system collects the relationship values of 360°. When the actual angle of the sensor is input into the system, the system outputs the corresponding relationship value to correct the angle.

[0058] Specifically, the angle sensor (such as the MPU6050 gyroscope) is connected to the Arduino. With the help of the Arduino, the data of the angle sensor is read to calculate the rotation angle; through serial communication, the angle data read by the Arduino is transmitted to the computer; Python and the OpenCV library are used to control the camera to collect images, and then the images are rotated according to the received angle data to achieve the directional display of the images on the computer display screen.

[0059] The present invention uses an electronic mirror for plasma electrocision, filling the gap in this field.

[0060] The above embodiments are illustrative of the present invention and not limiting thereof. Any solution obtained by simply transforming the present invention falls within the protection scope of the present invention.

Claims

1. A plasma resection mirror, characterized in that: It includes a sheath assembly (1), an operator (2), an electrocision loop assembly (3), and an electronic endoscope (4); a sheath assembly (1) is provided at the front end of the operator (2), the sheath assembly (1) includes an outer sheath (11) and an inner sheath (12), the outer sheath (11) is sleeved outside the inner sheath (12), the electronic endoscope (4) includes a lens tube (41) and an operation handle (7), the lens tube (41) is arranged in the inner sheath (12), the electrocision loop assembly (3) includes an electrode head (31), a connecting rod (32), and an electrode rod (33), the electrode head (31) is arranged on the front side of the lens tube (41), connecting rods (32) are connected to both sides of the electrode head (31), the connecting rods (32) are connected to electrode rods (33), the electrode rods (33) are arranged on both sides of the lens tube (41), the rear end of the electrode rod (33) is connected to a slider (34), the slider (34) is slidably installed on the operator (2), the slider (34) is connected to a finger hook (35), and a distance sensor (5) for sensing the position of the slider (34) is provided on the operator (2). Conduits (42) are provided on both sides of the lens tube (41), the electrode rods (33) are slidably sleeved in the conduits (42), a lens head tube (43) is provided at the front end of the lens tube (41), and an image sensor (44) is provided in the lens head tube (43); a tip head (6) is provided in the lens head tube (43), the image sensor (44) is installed in the tip head (6), the diameter of the front side head of the image sensor (44) is larger than the diameter of the rear side tail of the image sensor (44), the diameter of the lens head tube (43) is larger than the diameter of the lens tube (41) and the two are smoothly transitioned through an inclined surface (46). A protective glass (45) is provided on the outer surface of the lens head tube (43), and a cut-off film is provided on the side of the protective glass (45) close to the image sensor (44). An installation card slot (61) for the protective glass (45) is provided on the surface of the tip head (6), a limiting slot (62) for installing the lens head tube (43) is provided in the middle of the installation card slot (61), a first bonding surface (63) and a second bonding surface (64) are provided in the installation card slot (61), the left and right sides of the installation card slot (61) are arc-shaped structures, the first bonding surface (63) is bonded to the outer periphery of the bottom surface of the protective glass (45), and the second bonding surface (64) is bonded to the side surface of the protective glass (45). The operating handle (7) is provided with operating buttons, and a signal transfer board (71) with an angle sensor is arranged in the operating handle (7). In the image deviation correction system, there is a virtual interface that is synchronized with the real interface; a cross interface or a single-line interface is set on the virtual interface, and this special interface is a key element for detecting and correcting image deviation; at the same time, there is also a fixed cross reference interface that serves as a reference standard; the system senses the angle difference between the cross or single-line interface on the virtual interface and the reference cross interface through the angle sensor; when the image is offset, the virtual interface will change accordingly, resulting in an angle deviation between the cross or single-line interface on the virtual interface and the reference cross interface; a relationship formula is generated between the angle between the cross or single-line of the virtual interface and the static interface and the angle of the angle sensor. The system collects the relationship values of 360°, and when the actual angle of the sensor is input into the system, the system outputs the corresponding relationship value to correct the angle.

2. The plasmakinetic resectoscope according to claim 1, wherein: Above the said tip head (for example, tip head (6)), a light guide beam (65) for illumination is provided.

3. The plasma electroresection mirror according to claim 1, wherein: The said lens tube (43) bends downward, forming a viewing angle θ with the central axis of the inner sheath (12), and the installation direction of the image sensor (44) is the same as the bending direction of the lens tube (43).

4. The plasmakinetic resectoscope according to claim 3, wherein: The said viewing angle θ is 0 to 30°.

5. The plasma electroresection mirror according to claim 1, characterized in that: The gap between the said inner sheath (12) and the outer sheath (11) is the water outlet channel (13); the gap between the inner sheath (12) and the lens tube (41) is the water inlet channel (14).

6. The plasma electroresection mirror according to claim 1, characterized in that: The said distance sensor (5) includes a photoelectric sensor (51), a spring (52), a fixed rod (53), and a telescopic rod (54). The fixed rod (53) is fixed on the manipulator (2). An installation groove (55) is provided inside the fixed rod (53). A photoelectric sensor (51) is provided at one end of the installation groove (55) away from the slider (34). A telescopic rod (54) is slidably installed at one end of the installation groove (55) close to the slider (34). The end of the telescopic rod (54) protrudes from the fixed rod (53). A limiting part (56) is provided on the telescopic rod (54). A spring (52) is provided between the limiting part (56) and the installation groove (55); when the photoelectric sensor (51) has no induction, the electro-cutting ring assembly (3) works normally; when the photoelectric sensor (51) is triggered, the electro-cutting ring assembly (3) cannot work.

7. The plasma electroresection mirror according to claim 1, wherein: The said operating handle (7) is arranged behind the manipulator (2). The rear of the operating handle (7) is connected with a plug assembly through a guide tube. The plug assembly includes a power plug (8) and a light source plug (9).

8. The plasmakinetic resectoscope according to claim 7, characterized in that: The angle sensor is connected to Arduino. With the help of Arduino, the data of the angle sensor is read to calculate the rotation angle; the angle data read by Arduino is transmitted to the computer; Python and the OpenCV library are used to control the camera to collect images, and then the images are rotated according to the received angle data to achieve the directional display of the images on the computer display screen.

Images