Bipolar radio frequency grinding tool and grinding device

Abstract

The utility model relates to a bipolar radio frequency grinding cutter and a grinding device, in the using process, a power handle drives an inner cutter tube and a grinding piece to rotate around the axial direction relative to an outer cutter tube, and therefore the grinding piece can be used for grinding and cutting off focus area tissue. When bleeding occurs at an affected part, the main machine supplies power to the electrode tube and the outer knife tube through the conductive plug, so that the electrode tube is electrified to form a pole, the outer knife tube, the conductive part, the inner knife tube and the grinding piece are electrified to form another pole, and the two poles are conducted to form a loop when tissue is contacted. Therefore, electric coagulation hemostasis or electric coagulation cutting can be carried out on an affected part, hemostasis can be carried out on the affected part without additional other hemostasis instruments, operation is easy and convenient, and the operation duration is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is related to a bipolar radio frequency grinding cutter and grinding device. BACKGROUND

[0002] Grinding device is a common surgical power device, which has been widely used in clinical surgery. The grinding device is driven by power output, and the lesion area tissue is rotated and removed by the grinding cutter at the front end. In the surgical process, the affected area is prone to bleeding. The traditional method is for the doctor to stop the current grinding operation, and then use other hemostatic instruments to perform hemostatic operation on the affected area, which increases the difficulty of surgical operation and prolongs the operation time. SUMMARY

[0003] Therefore, it is necessary to provide a bipolar radio frequency grinding cutter and grinding device to solve the technical problems of increasing the difficulty of surgical operation and prolonging the operation time.

[0004] The technical scheme is as follows:

[0005] On the one hand, a bipolar radio frequency grinding cutter is provided, comprising:

[0006] An outer cutter assembly, the outer cutter assembly comprises an outer cutter tube, an electrode tube and an outer cutter shell, the outer cutter tube is provided with an insertion channel extending in the axial direction and a conductive part located in the insertion channel, the electrode tube is sleeved on part of the outer circumferential side of the outer cutter tube and is gap-fitted with the outer cutter tube to form an isolation channel, the outer cutter shell is sleeved on part of the outer side wall of the electrode tube, the outer cutter shell is provided with a first socket and a second socket, the first socket extends to the electrode tube so that the electrode tube can be electrified to form a pole, and the second socket extends to the outer cutter tube so that the outer cutter tube can conduct electricity; and

[0007] An inner cutter tube, the inner cutter tube is circumferentially rotatable and partially inserted into the insertion channel, and the inner cutter tube is in electrical contact with the conductive part; and

[0008] A grinding part, the rear end of the grinding part is inserted into the front end of the insertion channel and connected with the inner cutter tube so that the outer cutter tube, the conductive part, the inner cutter tube and the grinding part conduct electricity to form another pole.

[0009] The technical scheme is further described as follows:

[0010] In one of the embodiments, the inner cutter tube and the outer cutter tube are in a clearance fit to form a first liquid injection channel, the grinding member and the outer cutter tube are in a clearance fit to form a second liquid injection channel which is in communication with the outside and the first liquid injection channel; the inner cutter tube is provided with an axial suction channel, the grinding member is provided with a communication channel which is in communication with the outside and the suction channel; the bipolar radio frequency grinding cutter further comprises a first insulation sleeve, the first insulation sleeve is connected to the front end of the outer cutter tube, the first insulation sleeve is sleeved on the outer side wall of the grinding member and is in rotational fit with the grinding member, the grinding member is partially located outside the first insulation sleeve, and the first insulation sleeve is provided with a liquid guide channel which is in communication with the outside and the second liquid injection channel.

[0011] In one of the embodiments, the first insulation sleeve is provided with at least two spaced-apart liquid guide channels in the circumferential direction, and a support surface is formed between the two adjacent liquid guide channels, the support surface supports the outer side wall of the grinding member and is in rotational fit.

[0012] In one of the embodiments, the outer cutter assembly further comprises an isolation sleeve, the isolation sleeve is located in the isolation channel, the isolation sleeve is sleeved on the outer side wall of the outer cutter tube, and the electrode tube is sleeved on the outer side wall of the isolation sleeve.

[0013] In one of the embodiments, the side wall of the outer cutter tube is provided with a bending elastic member, the bending elastic member is bent towards the inside of the plug-in channel to form the conductive part.

[0014] In one of the embodiments, the front end of the first insulation sleeve, the front end of the isolation sleeve and the front end of the electrode tube are flush.

[0015] In one of the embodiments, the outer cutter assembly further comprises a second insulation sleeve, the second insulation sleeve is sleeved on the outer side wall of the electrode tube, the front end of the electrode tube is located outside the second insulation sleeve, and the outer cutter housing is sleeved on the outer side wall of the second insulation sleeve.

[0016] In one of the embodiments, the bipolar radio frequency grinding cutter further comprises a dynamic sealing element, the dynamic sealing element is arranged between the inner cutter tube and the outer cutter housing.

[0017] In one of the embodiments, the rear end of the inner cutter tube is sleeved with an inner cutter housing, the bipolar radio frequency grinding cutter further comprises a static sealing element, the static sealing element is arranged between the inner cutter tube and the inner cutter housing.

[0018] On the other hand, a grinding device is provided, comprising a power handle, a main machine and the bipolar radio frequency grinding cutter, the main machine is electrically connected with the bipolar radio frequency grinding cutter, and the power handle is in transmission connection with the inner cutter tube to drive the inner cutter tube to rotate circumferentially.

[0019] The bipolar radio frequency grinding tool and the grinding device of the above embodiment are used in the process, the power handle drives the inner cutter tube and the grinding part to rotate relative to the outer cutter tube around the axis, so that the grinding part can grind and remove the lesion area tissue. When the affected area bleeds, the main machine supplies power to the electrode tube and the outer cutter tube through the conductive plug, so that the electrode tube is electrified to form one pole, and the outer cutter tube, the conductive part, the inner cutter tube and the grinding part are electrified to form another pole. When contacting the tissue, the two poles are conducted to form a loop, so that the affected area can be coagulated and cut, and the affected area can be coagulated without additional other hemostatic instruments. Not only is the operation simple and convenient, but also the operation time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the improper limitation.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a structural schematic diagram of the bipolar radio frequency grinding tool of an embodiment;

[0023] Figure 2 It is an axial sectional view of the bipolar radio frequency grinding tool of Figure 1

[0024] Figure 3 It is a local enlarged view of part A of the bipolar radio frequency grinding tool of Figure 2

[0025] Figure 4 It is a local enlarged view of part B of the bipolar radio frequency grinding tool of Figure 2

[0026] Figure 5 It is a local enlarged view of part C of the bipolar radio frequency grinding tool of Figure 2

[0027] Figure 6 It is an assembly schematic diagram of the outer cutter tube and the first insulating sleeve of the bipolar radio frequency grinding tool of Figure 1

[0028] Explanation of reference signs:

[0029] ​​​​​10. Bipolar radio frequency grinding tool; 100. Outer tool assembly; 110. Outer tool tube; 111. Conductive part; 1111. Bending elastic element; 112. Connecting through hole; 120. Electrode tube; 130. Outer tool housing; 131. First socket; 132. Second socket; 133. First limiting part; 134. Second limiting part; 135. Third limiting part; 136. Liquid injection interface; 140. Isolation sleeve; 150. Second insulating sleeve; 200. Inner tool tube; 210. Suction channel; 220. Inner tool housing; 300. First liquid injection channel; 400. Grinding part; 500. Second liquid injection channel; 600. First insulating sleeve; 610. Liquid guiding channel; 620. Support surface; 700. Dynamic sealing element; 800. Static sealing element; 900. Conductive plug; 910. Pin. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] like Figures 1 to 6 As shown, in one embodiment, a grinding apparatus is provided, including a power handle (not shown), a main unit (not shown), and a bipolar radio frequency grinding tool 10.

[0032] The power handle can be an existing handle structure capable of providing rotational drive. The power handle is connected to the bipolar radiofrequency abrasive tool 10 to drive the bipolar radiofrequency abrasive tool 10 to abrade and remove the lesion tissue.

[0033] The host unit can be any existing component capable of providing power. The host unit is electrically connected to the bipolar radiofrequency abrasive tool 10, thereby providing power to the bipolar radiofrequency abrasive tool 10. This enables the bipolar radiofrequency abrasive tool 10 to perform electrocoagulation hemostasis on the affected area without the need for additional hemostatic instruments. This not only makes the operation simple and convenient but also shortens the operation time.

[0034] like Figures 1 to 5 As shown, in one embodiment, a bipolar radio frequency grinding tool 10 is provided, including an outer tool assembly 100, an inner tool tube 200, and a grinding element 400.

[0035] like Figure 3 and Figure 4As shown, the outer blade assembly 100 includes an outer blade tube 110, an electrode tube 120, and an outer blade housing 130. The outer blade tube 110 has an axially extending insertion channel and a conductive portion 111 located within the insertion channel. The electrode tube 120 is sleeved on a portion of the outer periphery of the outer blade tube 110 and forms an isolation channel with a clearance fit with the outer blade tube 110, meaning that the electrode tube 120 and the outer blade tube 110 do not directly contact each other and are not directly electrically connected, thus avoiding short circuits. The outer blade housing 130 is sleeved on a portion of the outer side wall of the electrode tube 120. Furthermore, the outer blade housing 130 has a first insertion port 131 and a second insertion port 132. The first insertion port 131 extends to the electrode tube 120 to allow the electrode tube 120 to conduct electricity and form a pole, and the second insertion port 132 extends to the outer blade tube 110 to allow the outer blade tube 110 to conduct electricity.

[0036] Optionally, the two pins 910 of the conductive plug 900 are inserted into the first socket 131 and the second socket 132 respectively, so that the two pins 910 can respectively contact and cooperate with the electrode tube 120 and the outer blade tube 110 to achieve electrical connection.

[0037] It should be noted that the conductive plug 900 can be an existing connector structure with two pins 910. The electrical connection between the bipolar radio frequency grinding tool 10 and the host can be achieved through the conductive plug 900 and the corresponding wire.

[0038] like Figure 3 and Figure 4 As shown, the inner blade tube 200 is circumferentially rotatable and partially inserted into the insertion channel. Optionally, the front end of the inner blade tube 200 is inserted into the insertion channel, while the rear end of the inner blade tube 200 is located outside the insertion channel and is connected to the power handle for transmission, thereby enabling the inner blade tube 200 to rotate circumferentially under the drive of the power handle. Furthermore, the inner blade tube 200 is in electrical contact with the conductive part 111, thereby enabling the outer blade tube 110 and the inner blade tube 200 to achieve electrical conductivity through the conductive part 111.

[0039] like Figure 1 and Figure 4 As shown, the rear end of the grinding component 400 is inserted into the front end of the insertion channel and connected to the inner tool tube 200 by means of insertion or screw connection, so that the outer tool tube 110, the conductive part 111, the inner tool tube 200 and the grinding component 400 are energized to form another pole, and the grinding component 400 can rotate relative to the outer tool tube 110 under the drive of the inner tool tube 200.

[0040] Optionally, the front end of the grinding element 400 is located outside the insertion channel, thereby enabling the front end of the grinding element 400 to perform rotary grinding and removal of the lesion tissue.

[0041] Optionally, the front end of the grinding part 400 is provided with a grinding head, which can be used to grind the tissue. The rear end of the grinding part 400 can be assembled and connected to the inner tool tube 200 by means of plug-in connection or other methods.

[0042] It should be noted that, in this application embodiment, the front end refers to the end that faces or is close to the affected area during the surgery. The rear end refers to the other end opposite the front end.

[0043] In the bipolar radiofrequency abrasive cutter 10 of the above embodiment, during use, the power handle drives the inner blade tube 200 and the grinding element 400 to rotate axially relative to the outer blade tube 110, thereby enabling the grinding element 400 to abrade and remove the lesion tissue. When bleeding occurs at the affected area, the main unit supplies power to the electrode tube 120 and the outer blade tube 110 through the conductive plug 900, thereby energizing the electrode tube 120 to form one pole, and energizing the outer blade tube 110, the conductive part 111, the inner blade tube 200, and the grinding element 400 to form the other pole. When in contact with tissue, the two poles conduct to form a circuit, thereby enabling electrocoagulation hemostasis or electrocoagulation abrasion at the affected area. Hemostasis can be achieved at the affected area without the need for additional hemostatic instruments, which is not only simple and convenient to operate, but also shortens the operation time.

[0044] like Figure 4As shown in Figure 6, in one embodiment, the inner blade tube 200 and the outer blade tube 110 are fitted together to form a first injection channel 300. Furthermore, the inner blade tube 200 is provided with an axially extending suction channel 210. The suction channel 210 can create a vacuum environment to draw in tissue, facilitating grinding and removal, and can also aspirate the removed tissue. Additionally, the grinding element 400 and the outer blade tube 110 are fitted together to form a second injection channel 500 connecting the outside world to the first injection channel 300. This allows saline solution and other liquids to be injected into the affected area through the first injection channel 300 and the second injection channel 500. With the conduction of tissue and saline solution, a circuit is formed, enabling electrocoagulation hemostasis or electrocoagulation ablation of the affected area. This allows for hemostasis without the need for additional hemostatic instruments, simplifying and simplifying the operation and shortening the surgical time. Furthermore, the grinding element 400 is provided with a communication channel connecting to the outside and the suction channel 210, allowing the ground tissue to be sucked out through the communication channel and the suction channel 210. Simultaneously, the bipolar radio frequency grinding tool 10 also includes a first insulating sleeve 600. The first insulating sleeve 600 is connected to the front end of the outer blade tube 110 by a plug-in or snap-fit ​​method. The first insulating sleeve 600 is fitted onto a portion of the outer side wall of the grinding element 400 and rotatably engages with the grinding element 400, allowing the grinding element 400 to rotate smoothly relative to the first insulating sleeve 600. Moreover, the first insulating sleeve 600 can be made of a wear-resistant material to prevent wear. Furthermore, the grinding element 400 is partially located outside the first insulating sleeve 600, enabling the grinding element 400 to perform rotary grinding and removal of the lesion tissue. It also allows the grinding element 400 to form a circuit with the outer blade tube 110 through the affected area or a liquid such as saline solution to perform electrocoagulation hemostasis or electrocoagulation ablation. The first insulating sleeve 600 is provided with a fluid guiding channel 610 connecting the outside to the second injection channel 500, allowing liquids such as saline solution to reach the affected area through the first injection channel 300, the second injection channel 500, and the fluid guiding channel 610. Simultaneously, the first insulating sleeve 600 prevents short circuits between the outer blade tube 110 and the electrode tube 120 due to insufficient axial spacing.

[0045] The first insulating sleeve 600 can be made of insulating materials such as ceramics, which have good wear resistance and good insulation.

[0046] like Figure 4 and Figure 6As shown, the first insulating sleeve 600 is further provided with at least two spaced-apart fluid guiding channels 610 along the circumferential direction, so that the saline solution or other liquid in the second injection channel 500 can reach the affected area in sufficient quantity and quickly, avoiding insufficient or untimely fluid output that could affect electrocoagulation cutting or electrocoagulation hemostasis. Furthermore, a support surface 620 is formed between two adjacent fluid guiding channels 610. The support surface 620 supports part of the outer side wall of the grinding part 400 and rotates in engagement with it. Thus, the support surface 620 supports and limits the rotation of the grinding part 400, preventing the grinding part 400 from shaking or shifting.

[0047] The profile shape of the support surface 620 can be matched with the profile shape of the grinding part 400.

[0048] like Figure 3 and Figure 4 As shown, in one embodiment, the outer blade assembly 100 further includes an isolation sleeve 140. The isolation sleeve 140 is located within the isolation channel and is fitted onto a portion of the outer side wall of the outer blade tube 110. The electrode tube 120 is fitted onto a portion of the outer side wall of the isolation sleeve 140. Thus, the isolation sleeve 140 provides insulation between the electrode tube 120 and the outer blade tube 110, preventing direct contact and electrical connection between them, thereby avoiding short circuits.

[0049] The isolation sleeve 140 can be made of insulating materials such as rubber.

[0050] like Figure 3 As shown, optionally, the inner sidewall of the outer blade housing 130 is provided with a first limiting portion 133. The rear end of the isolation sleeve 140 is limited and engaged with the first limiting portion 133, and the first limiting portion 133 is located between the first insertion port 131 and the second insertion port 132 along the axial direction of the outer blade tube 110. This prevents the isolation sleeve 140 from obstructing the second insertion port 132, facilitating the extension of the second insertion port 132 to the outer blade tube 110, thereby allowing the conductive plug 900 to achieve electrical connection with the outer blade tube 110 through the second insertion port 132. Furthermore, the first limiting portion 133 can also limit and constrain the installation position of the isolation sleeve 140 relative to the outer blade tube 110, ensuring assembly accuracy.

[0051] The first limiting part 133 can be a limiting structure such as a limiting step or a limiting protrusion.

[0052] like Figure 4 and Figure 6As shown, optionally, the side wall of the outer blade tube 110 is provided with a bending elastic element 1111, which is bent toward the insertion channel to form the conductive part 111. Thus, the bending elastic element 1111 comes into contact with the inner blade tube 200, thereby achieving electrical conductivity between the outer blade tube 110 and the inner blade tube 200. Furthermore, the bending elastic element 1111 does not affect the rotation of the inner blade tube 200 relative to the outer blade tube 110.

[0053] The number of bending elastic elements 1111 can be at least one, for example, one, two, three or more. When there are two or more bending elastic elements 1111, the bending elastic elements 1111 can be distributed along the circumference of the outer cutter tube 110, so that uniform electrical conduction is achieved between the outer cutter tube 110 and the inner cutter tube 200. The bending elastic elements 1111 can be formed by slotting three sides on the side wall of the outer cutter tube 110 and then bending them into the insertion channel, which is convenient for processing.

[0054] like Figure 4 As shown, optionally, the front ends of the first insulating sleeve 600, the front ends of the isolation sleeve 140, and the front ends of the electrode tube 120 are kept flush. This ensures that after insertion into the affected area, the electrode tube 120 can contact the affected area and form a circuit with the front end of the grinding piece 400. It also ensures good insulation between the electrode tube 120 and the outer blade tube 110, preventing short circuits.

[0055] like Figure 3 and Figure 4 As shown, in one embodiment, the outer blade assembly 100 further includes a second insulating sleeve 150. The second insulating sleeve 150 is fitted onto a portion of the outer wall of the electrode tube 120, and the front end of the electrode tube 120 is located outside the second insulating sleeve 150. The outer blade housing 130 is fitted onto a portion of the outer wall of the second insulating sleeve 150. Thus, the second insulating sleeve 150 insulates the outer wall of the electrode tube 120 near the outer blade housing 130 from the outside environment, preventing electric shock and other safety accidents during use.

[0056] It should be noted that the second insulating sleeve 150 is fitted onto part of the outer wall of the electrode tube 120, so that after the electrode tube 120 is inserted into the affected area, it can be electrically connected to the grinding workpiece 400 to form a circuit under the conduction of tissue and physiological saline and other liquids.

[0057] The second insulating sleeve 150 can be made of insulating materials such as rubber.

[0058] like Figure 3As shown, optionally, the inner sidewall of the outer blade housing 130 is provided with a second limiting portion 134. The rear end of the second insulating sleeve 150 is limited and engaged with the second limiting portion 134, and the second limiting portion 134 is positioned relative to the first insertion port 131, close to the front end. This prevents the second insulating sleeve 150 from obstructing the first insertion port 131, facilitating the extension of the first insertion port 131 to the electrode tube 120, thereby allowing the conductive plug 900 to achieve electrical connection with the electrode tube 120 through the first insertion port 131. Furthermore, the second limiting portion 134 can also limit and constrain the installation position of the second insulating sleeve 150 relative to the electrode tube 120, ensuring assembly accuracy.

[0059] The second limiting part 134 can be a limiting structure such as a limiting step or a limiting protrusion.

[0060] like Figure 3 As shown, in one embodiment, the outer blade housing 130 is provided with an injection port 136, and the outer blade tube 110 is provided with a connecting through hole 112 connecting the injection port 136 and the first injection channel 300. Thus, physiological saline or other liquids are injected into the first injection channel 300 through the injection port 136 and the connecting through hole. Furthermore, the injection port 136, the first connector 131, and the second connector 132 are located on the same side of the outer blade housing 130. This ensures that the tubing connected to the injection port 136 and the conductive plug 900 connected to the first connector 131 and the second connector 132 are on the same side, preventing obstruction of the field of vision and facilitating surgical operations.

[0061] like Figure 5 As shown, optionally, the bipolar radio frequency grinding tool 10 further includes a dynamic sealing element 700. The dynamic sealing element 700 is disposed between the inner tool tube 200 and the outer tool housing 130. Specifically, the dynamic sealing element 700 is located on the side away from the grinding element 400 relative to the liquid injection port 136. Thus, the dynamic sealing element 700 seals the side of the liquid injection channel away from the grinding element 400, preventing leakage or overflow of liquids such as saline solution. Furthermore, the dynamic sealing element 700 does not affect the rotation of the inner tool tube 200 relative to the outer tool tube 110.

[0062] The dynamic sealing element 700 can be in the form of a sealing sleeve or a sealing ring.

[0063] like Figure 5As shown, in one embodiment, an inner blade housing 220 is fitted over the rear end of the inner blade tube 200. Furthermore, the bipolar radio frequency grinding tool 10 also includes a static sealing element 800. The static sealing element 800 is disposed between the inner blade tube 200 and the inner blade housing 220. Thus, when the inner blade housing 220 is connected to the power handle, the static sealing element 800 prevents backflow or leakage of liquid extracted from the suction channel 210, ensuring the reliability of the sampling.

[0064] The static sealing element 800 can be in the form of a sealing sleeve or a sealing ring.

[0065] like Figure 3 As shown, in one embodiment, the inner sidewall of the outer blade housing 130 is provided with a third limiting portion 135. The end of the electrode tube 120 furthest from the first planing opening is limited and engaged with the third limiting portion 135, and the third limiting portion 135 is located between the first insertion port 131 and the second insertion port 132 along the axial direction of the outer guide tube. Thus, when the rear end of the electrode tube 120 is inserted into the outer blade housing 130 and engaged with the third limiting portion 135, it is known that the rear end of the electrode tube 120 is located between the first insertion port 131 and the second insertion port 132, thereby allowing the conductive plug 900 to achieve electrical connection with the electrode tube 120 through the first insertion port 131. Furthermore, the third limiting portion 135 can also limit and constrain the installation position of the electrode tube 120 relative to the outer blade housing 130, ensuring assembly accuracy.

[0066] The third limiting part 135 can be a limiting structure such as a limiting step or a limiting protrusion.

[0067] It should be noted that "a certain body" or "a certain part" can be a portion of the corresponding "component," meaning that "a certain body" or "a certain part" is integrally formed and manufactured with the "other parts of the component"; or it can be an independent component that can be separated from the "other parts of the component," meaning that "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" to form a whole. The expression of "a certain body" or "a certain part" in this application is only one embodiment for ease of reading, and is not intended to limit the scope of protection of this application. Any technical solution that includes the above features and has the same function should be understood as an equivalent technical solution of this application.

[0068] It should be noted that the components included in the terms "unit," "component," "mechanism," and "device" of this application can be flexibly combined, enabling modular production according to actual needs and facilitating modular assembly. The division of the above-mentioned components in this application is merely one embodiment for ease of reading and is not intended to limit the scope of protection of this application. Any solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this application.

[0069] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the related listed items.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0072] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixed transmission connection" to another component, the two can be fixed in a detachable or non-detachable manner, as long as power transmission can be achieved, such as sleeve, snap-fit, integral molding, welding, etc., which can be achieved in the prior art and will not be elaborated here. When a component is perpendicular or approximately perpendicular to another component, it means that the two are ideally perpendicular, but due to the influence of manufacturing and assembly, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0074] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bipolar radio frequency grinding tool, characterized in that, include: An outer blade assembly includes an outer blade tube, an electrode tube, and an outer blade housing. The outer blade tube has an axially extending insertion channel and a conductive portion located within the insertion channel. The electrode tube is sleeved on a portion of the outer peripheral side of the outer blade tube and forms an isolation channel with a clearance fit. The outer blade housing is sleeved on a portion of the outer outer wall of the electrode tube. The outer blade housing has a first insertion port and a second insertion port. The first insertion port extends to the electrode tube to enable the electrode tube to conduct electricity and form an electrode. The second insertion port extends to the outer blade tube to enable the outer blade tube to conduct electricity. as well as An inner blade tube, which can rotate circumferentially and is partially inserted into the insertion channel, and the inner blade tube is in electrical contact with the conductive part; as well as A grinding component, the rear end of which is inserted into the front end of the insertion channel and connected to the inner tool tube, so that the outer tool tube, the conductive part, the inner tool tube and the grinding component conduct electricity to form another pole.

2. The bipolar radio frequency grinding tool according to claim 1, characterized in that, The inner blade tube and the outer blade tube are fitted together to form a first liquid injection channel. The grinding component and the outer blade tube are fitted together to form a second liquid injection channel that communicates with the outside world and the first liquid injection channel. The inner blade tube has an axially extending suction channel, and the grinding component has a communication channel that communicates with the outside world and the suction channel. The bipolar radio frequency grinding tool also includes a first insulating sleeve. The first insulating sleeve is connected to the front end of the outer blade tube. The first insulating sleeve is fitted on a portion of the outer side wall of the grinding component and rotates with the grinding component. The grinding component is located outside the first insulating sleeve. The first insulating sleeve has a liquid guiding channel that communicates with the outside world and the second liquid injection channel.

3. The bipolar radio frequency grinding tool according to claim 2, characterized in that, The first insulating sleeve has at least two spaced liquid guiding channels along the circumferential direction, and a support surface is formed between two adjacent liquid guiding channels. The support surface supports part of the outer side wall of the grinding part and is rotatably engaged.

4. The bipolar radio frequency grinding tool according to claim 2, characterized in that, The outer blade assembly also includes an isolation sleeve located within the isolation channel. The isolation sleeve is fitted onto a portion of the outer side wall of the outer blade tube, and the electrode tube is fitted onto a portion of the outer side wall of the isolation sleeve.

5. The bipolar radio frequency grinding tool according to claim 4, characterized in that, The side wall of the outer blade tube is provided with a bending elastic element, which is bent toward the insertion channel to form the conductive part.

6. The bipolar radio frequency grinding tool according to claim 4, characterized in that, The front ends of the first insulating sleeve, the front ends of the isolation sleeve, and the front ends of the electrode tube are kept flush.

7. The bipolar radio frequency grinding tool according to any one of claims 1 to 6, characterized in that, The outer blade assembly also includes a second insulating sleeve, which is fitted onto a portion of the outer wall of the electrode tube, with the front end of the electrode tube located outside the second insulating sleeve, and the outer blade housing is fitted onto a portion of the outer wall of the second insulating sleeve.

8. The bipolar radio frequency grinding tool according to any one of claims 1 to 6, characterized in that, The bipolar radio frequency grinding tool also includes a dynamic sealing element, which is disposed between the inner tool tube and the outer tool housing.

9. The bipolar radio frequency grinding tool according to any one of claims 1 to 6, characterized in that, The inner blade tube is fitted with an inner blade housing at its rear end. The bipolar radio frequency grinding tool also includes a static sealing element, which is disposed between the inner blade tube and the inner blade housing.

10. A grinding apparatus, characterized in that, The device includes a power handle, a main unit, and a bipolar radio frequency grinding tool as described in any one of claims 1 to 9, wherein the main unit is electrically connected to the bipolar radio frequency grinding tool, and the power handle is drively connected to the inner tool tube to drive the inner tool tube to rotate circumferentially.

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