CN214794936U - Bipolar coolable probe - Google Patents

Abstract

The utility model discloses a bipolar probe that can cool off, including first electrode, second electrode, first insulation cover and the insulating cover of second, the fixed cover of first insulation cover is located outside the first electrode, and outside the first insulation cover was located to the fixed cover of second electrode, the insulating cover of second was located outside the second electrode, and the insulating cover of second is equipped with the cooling part with second electrode sliding fit in the first electrode, and the cooling part is used for making the first electrode cooling. Above-mentioned bipolar coolable probe, but second insulating cover and second electrode relative slip can adjust the length of the exposure of second electrode through sliding the insulating cover of second, and then adjust first electrode, the effect that switches on of second electrode to adapt to different operation requirements, be equipped with the cooling piece that can be used to the cooling in the first electrode simultaneously, can reduce the temperature of first electrode when using, prevent because the higher scald scheduling problem that arouses of temperature, reduce the damage.

Description

Bipolar coolable probe

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a but bipolar cooling probe.

Background

In the tumor ablation operation, the method can be roughly divided into three categories, namely "thermal ablation", such as microwave ablation, radio frequency ablation, and the like, "cryoablation", such as argon-helium knife ablation, and the like, and "steep pulse electric field ablation", wherein the thermal ablation is to form protein coagulative necrosis by heat generated by water molecules or other charged particles in tissues around an electrode according to electromagnetic waves with specific wavelengths emitted by the electrode, so as to kill tumor cells; the cryoablation is the death of tumor cells caused by the low temperature of the probe causing the freezing around the probe, and the steep pulse ablation is the death of tumor cells caused by the breakdown of the cell membrane of the tumor cells by the high voltage electric field around the probe.

In the microwave and radio frequency ablation process, the probe can generate heat because the emitted continuous waves, and when the heat of the probe is too high, even tissues can generate a carbonization phenomenon, so that the treatment effect is directly influenced.

In the process of steep pulse ablation, although the probe emits pulse direct current with extremely small width, the temperature of the probe is also increased due to the large current, and in severe cases, tissues around the probe are also thermally burned.

SUMMERY OF THE UTILITY MODEL

Based on this, the present invention is directed to overcoming the deficiencies of the prior art and providing a bipolar coolable probe with reduced damage.

The technical scheme is as follows:

the utility model provides a bipolar probe that can cool off, includes first electrode, second electrode, first insulating cover and second insulating cover, the fixed cover of first insulating cover is located outside the first electrode, the fixed cover of second electrode is located outside the first insulating cover, the insulating cover of second is located outside the second electrode, the insulating cover of second with second electrode sliding fit, be equipped with the cooling piece in the first electrode, the cooling piece is used for making the first electrode cooling.

When the first electrode and the second electrode are inserted into a preset area, the first insulating sleeve is arranged between the first electrode and the second electrode, the second insulating sleeve is sleeved outside the second electrode, the first electrode partially extends out of the first insulating sleeve, and the second electrode partially extends out of the second insulating sleeve, so that the first electrode and the second electrode can only be conducted by the exposed parts of the first electrode and the second electrode, the second insulating sleeve and the second electrode can slide relatively, the exposed length of the second electrode can be adjusted by sliding the second insulating sleeve, the conducting effect of the first electrode and the second electrode can be adjusted to adapt to different use requirements, meanwhile, a cooling piece capable of being used for cooling is arranged in the first electrode, the temperature of the first electrode in use can be reduced, the problems of scalding and the like caused by high temperature are solved, and damage is reduced.

In one embodiment, the cooling element is a core tube, an air duct is arranged in the first electrode, the front end of the core tube is arranged in the air duct, an opening is arranged at the front end of the core tube, the rear end of the core tube is used for communicating high-pressure gas transmission equipment, an exhaust passage is arranged between the core tube and the first electrode, and the exhaust passage is communicated with the air duct and the opening.

In one embodiment, the bipolar coolable probe further comprises a handle, a cavity is formed in the handle, the second insulating sleeve penetrates through the handle in a sliding mode and extends into the cavity, the end portion of the first end of the first electrode is a closed end portion, the closed end portion is located outside the handle, the end portion of the second end of the first electrode is an air outlet end portion, the air outlet end portion is arranged in the cavity, and the rear end of the core tube is arranged in the cavity.

In one embodiment, a sliding part connected with the second insulating sleeve is arranged on the handle, the sliding part is in sliding fit with the handle, and the second electrode is clamped with the handle.

In one embodiment, the handle is provided with a matching port communicated with the cavity, the sliding part comprises a connecting part, a sliding part and an operating part which are sequentially connected, the connecting part is arranged in the cavity, the connecting part is connected with the second insulating sleeve, the sliding part is in sliding fit with the matching port, and the operating part is arranged outside the handle.

In one embodiment, the side wall of the matching opening is provided with at least two bayonets at intervals along the length direction far away from the second insulating sleeve, and the sliding part is provided with an elastic piece clamped with the bayonets.

In one embodiment, a blocking portion is arranged on the connecting portion, and the blocking portion is arranged on one side, away from the closed end portion, of the connecting portion.

In one embodiment, the bipolar coolable probe further includes an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the core pipe, the air outlet pipe is communicated with the air outlet end, the air outlet pipe is sleeved outside the air inlet pipe, and the inner wall of the air outlet pipe and the outer wall of the air inlet pipe are arranged at an interval.

In one embodiment, the bipolar coolable probe further includes a separating sleeve, one end of the separating sleeve is sleeved outside the first electrode, the other end of the separating sleeve is sleeved outside the air inlet pipe, a joint of the air inlet pipe and the core pipe is located in the separating sleeve, an air outlet is arranged on a side surface of the separating sleeve, and the air outlet pipe is communicated with the air outlet.

In one embodiment, a first clamping portion and a second clamping portion which are sequentially arranged in the cavity along a direction close to the closed end portion are arranged in the cavity, a first matching portion is arranged on the first electrode, a second matching portion is arranged on the second electrode, the first clamping portion is clamped with the first matching portion, and the second clamping portion is clamped with the second matching portion.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an oblique view of a bipolar coolable probe according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of a bipolar coolable probe according to an embodiment of the invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a cross-sectional view of the first electrode, the second electrode, the first insulating sheath, and the core tube according to an embodiment of the present invention after assembly;

FIG. 5 is an enlarged schematic view at B of FIG. 2;

fig. 6 is a schematic structural diagram of a sliding member according to an embodiment of the present invention;

fig. 7 is a partial schematic structural view illustrating the assembly of the handle and the sliding member according to the embodiment of the present invention;

FIG. 8 is an enlarged schematic view at C of FIG. 2;

fig. 9 is a schematic structural view of a separation sleeve according to an embodiment of the present invention;

fig. 10 is an enlarged schematic view at D in fig. 2.

Description of reference numerals:

100. the air-cooling device comprises a first electrode, 101, an air duct, 102, an exhaust channel, 103, a closed end, 104, an air outlet end, 110, a first matching part, 200, a second electrode, 210, a second matching part, 300, a first insulating sleeve, 400, a second insulating sleeve, 500, a cooling part, 510, a core pipe, 501, an opening, 600, a handle, 601, a cavity, 602, a matching port, 603, a bayonet, 610, a branch pipe, 620, a first clamping part, 630, a second clamping part, 700, a sliding part, 710, a connecting part, 711, a blocking part, 720, a sliding part, 721, an elastic part, 730, an operation part, 810, an air inlet pipe, 820, an air outlet pipe, 830, a separating sleeve, 831, an air outlet, 910, a first lead, 920 and a second lead.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and fig. 2, an embodiment discloses a bipolar coolable probe, which includes a first electrode 100, a second electrode 200, a first insulating sleeve 300 and a second insulating sleeve 400, wherein the first insulating sleeve 300 is fixedly sleeved outside the first electrode 100, the second electrode 200 is fixedly sleeved outside the first insulating sleeve 300, the second insulating sleeve 400 is sleeved outside the second electrode 200, the second insulating sleeve 400 is in sliding fit with the second electrode 200, a cooling member 500 is disposed in the first electrode 100, and the cooling member 500 is used for cooling the first electrode 100.

When the first electrode 100 and the second electrode 200 are inserted into the predetermined region, the first insulating sleeve 300 is disposed between the first electrode 100 and the second electrode 200, the second insulating sleeve 400 is sleeved outside the second electrode 200, the first electrode 100 partially extends out of the first insulating sleeve 300, and the second electrode 200 partially extends out of the second insulating sleeve 400, so that the first electrode 100 and the second electrode 200 can only be conducted by the exposed parts of the first electrode 100 and the second electrode 200, and the second insulating sleeve 400 and the second electrode 200 can slide relative to each other, so that the exposed length of the second electrode 200 can be adjusted by sliding the second insulating sleeve 400, and further the conduction effect of the first electrode 100 and the second electrode 200 can be adjusted to meet different requirements for use, and meanwhile, the cooling element 500 capable of cooling is disposed in the first electrode 100, so that the temperature of the first electrode 100 can be reduced during use, and the problems such as scalding caused by high temperature can be prevented, and the damage is reduced.

Optionally, the first electrode 100 partially protrudes out of the first insulating sleeve 300, and the first insulating sleeve 300 partially protrudes out of the second electrode 200. It is convenient at this time that the first electrode 100 and the second electrode 200 have exposed portions for conduction.

Alternatively, the predetermined region may be a tissue or a tumor or the like within the body of the living body.

Alternatively, as shown in fig. 1 and 2, the portion of the first electrode 100 for insertion into the predetermined region has a needle shape, which facilitates the insertion of the first electrode 100.

Alternatively, the first insulating sleeve 300 may be independently disposed with respect to the first and second electrodes 100 and 200; or the first insulating sleeve 300 is an insulating coating outside the first electrode 100.

In one embodiment, as shown in fig. 2 to 4, the cooling element 500 is a core tube 510, the first electrode 100 is provided with an air duct 101 therein, the front end of the core tube 510 is provided in the air duct 101, the front end of the core tube 510 is provided with an opening 501, the rear end of the core tube 510 is used for communicating with a high-pressure gas transmission device, an exhaust passage 102 is provided between the core tube 510 and the first electrode 100, and the exhaust passage 102 is communicated with the air duct 101 and the opening 501. Because the air duct 101 is arranged in the first electrode 100, the front end of the core tube 510 is arranged in the air duct 101, high-pressure gas can be sent into the core tube 510 by using high-pressure gas transmission equipment, when the opening 501 at the front end of the core tube 510 sends the high-pressure gas into the air duct 101, the air pressure can be reduced because the inner diameter of the air duct 101 is larger than the aperture of the core tube 510, and the throttling effect can be generated in the gas at the moment, so that the temperature is reduced, the temperature of the first electrode 100 is reduced along with the reduction of the temperature, the gas can be discharged from the exhaust passage 102, the working temperature of the first electrode 100 can be reduced, the problems of scalding and the like caused by high temperature are prevented, and the damage is reduced.

In other embodiments, the cooling element 500 can also be a liquid tube disposed in the first electrode 100, and the liquid tube is used for delivering a cooling liquid, such as cooled water or other cooling medium, to lower the temperature of the first electrode 100.

In one embodiment, as shown in fig. 1 and fig. 2, the bipolar coolable probe further includes a handle 600, a cavity 601 is disposed in the handle 600, the second insulating sleeve 400 is slidably disposed through the handle 600 and extends into the cavity 601, the first end of the first electrode 100 is a closed end 103, the closed end 103 is located outside the handle 600, the second end of the first electrode 100 is an air outlet end 104, the air outlet end 104 is disposed in the cavity 601, and the rear end of the core tube 510 is disposed in the cavity 601. The handle 600 can be used for holding and is isolated from the first electrode 100 or the second electrode 200, the low temperature of the first electrode 100 does not affect an operator, the use is convenient, and the closed end 103 of the first electrode 100 is positioned outside the handle 600, and the gas outlet end 104 is positioned in the cavity 601, so that the influence of the gas exhaust process on the operator can be prevented.

Specifically, as shown in fig. 3 and 4, the outer wall of the core tube 510 and the inner wall of the air duct 101 are arranged at intervals to form an annular exhaust passage 102, high-pressure air can enter the exhaust passage 102 from the periphery of the outer wall of the core tube 510 after entering the air duct 101, the position where the high-pressure air enters the air duct 101 is located in the middle of the air duct 101, and after the throttling effect is achieved, the temperature reduction situation of each position in the circumferential direction of the first electrode 100 is similar, so that the temperature reduction effect of the peripheral area of the first electrode 100 can be better achieved. Specifically, a supporting portion is arranged outside the core tube 510, and the supporting portion is used for being in contact with the inner wall of the air duct 101, and at the moment, the core tube 510 can be positioned through the supporting portion, so that the core tube 510 can be arranged in the middle of the air duct 101;

or one side of the core tube 510 is disposed in contact with the inner wall of the air duct 101, a throttling effect is also achieved and the gas is discharged from the exhaust passage 102.

In one embodiment, as shown in fig. 5 to 7, a slider 700 connected to the second insulating sleeve 400 is disposed on the handle 600, the slider 700 is slidably engaged with the handle 600, and the second electrode 200 is engaged with the handle 600. The sliding member 700 can be used to control the movement of the second insulating sleeve 400 conveniently, so as to adjust the distance that the second electrode 200 extends out of the second insulating sleeve 400, which is convenient to operate.

In other embodiments, the second insulating sleeve 400 may be screwed with the second electrode 200, and the second insulating sleeve 400 slides axially relative to the second electrode 200 by rotating the second insulating sleeve 400, so as to adjust the distance that the second electrode 200 extends out of the second insulating sleeve 400.

In one embodiment, as shown in fig. 5 to 7, a matching port 602 communicated with the cavity 601 is provided on the handle 600, the sliding member 700 includes a connecting portion 710, a sliding portion 720 and an operating portion 730 connected in sequence, the connecting portion 710 is disposed in the cavity 601, the connecting portion 710 is connected with the second insulating sleeve 400, the sliding portion 720 is slidably matched with the matching port 602, and the operating portion 730 is disposed outside the handle 600. By moving the operation part 730 located outside the handle 600, the second insulating sleeve 400 can be conveniently moved without directly contacting the first electrode 100 or the second electrode 200, thereby preventing the first electrode 100 and the second electrode 200 from being affected and simplifying the operation.

Optionally, the operation portion 730 is provided with an anti-slip protrusion. At this time, the operation portion 730 can be pushed by the finger, so that the slipping can be prevented and the operation can be more accurate.

Specifically, the operating portion 730 is provided with a wavy surface, the wavy surface is provided with a plurality of anti-skid protrusions with the same length, and the anti-skid protrusions are arranged at intervals. At this time, the anti-slip protrusions may also form a wavy surface on the surface of the operation portion 730 to further increase friction force and prevent slipping.

In other embodiments, the anti-slip protrusions may be formed by arranging an array of mesh grooves on the surface of the operation portion 730.

In one embodiment, as shown in fig. 5 to 7, at least two bayonets 603 are disposed on a sidewall of the mating opening 602 at intervals along a length direction away from the second insulating sheath 400, and an elastic member 721 engaged with the bayonets 603 is disposed on the sliding portion 720. The accessible sliding part 700 makes elastic component 721 utilize elastic deformation and different bayonet 603 joint, makes second insulating cover 400 remove to different positions and can fix relative second electrode 200 to satisfy different operation requirements and can not take place the displacement when using, convenient operation.

Optionally, the inner wall of the bayonet 603 is an arc-shaped surface, and a portion of the elastic member 721 clamped into the bayonet 603 is matched with the bayonet 603, so that the elastic member 721 can move out of the bayonet 603 and can be clamped with other bayonets 603 again.

Specifically, two opposite side walls in the fitting opening 602 are provided with bayonets 603. The slider 700 is more securely fixed and more stable in movement.

In one embodiment, as shown in fig. 5 and 6, the connecting portion 710 is provided with a blocking portion 711, and the blocking portion 711 is disposed on a side of the connecting portion 710 away from the closed end 103. The blocking portion 711 can block the matching opening 602, so as to prevent the second electrode 200 from being exposed from the matching opening 602, thereby ensuring the safety and accuracy of the bipolar coolable probe during use.

In one embodiment, as shown in fig. 1, 2 and 8, the dual-pole coolable probe further includes an air inlet tube 810 and an air outlet tube 820, the air inlet tube 810 is communicated with the core tube 510, the air outlet tube 820 is communicated with the air outlet end portion 104, the air outlet tube 820 is sleeved outside the air inlet tube 810, and an inner wall of the air outlet tube 820 is spaced apart from an outer wall of the air inlet tube 810. Through the arrangement of the air inlet pipe 810 and the air outlet pipe 820, the air inlet and the air outlet of the bipolar coolable probe are provided with special pipelines, so that gas with higher pressure can be fed into the core pipe 510, the cooling effect of the electrode is stronger, and the operation is better.

Optionally, since the air inlet pipe 810 dedicated to air inlet and the air outlet pipe 820 dedicated to air outlet can bear a larger air pressure, the air pressure in the air inlet pipe 810 can be increased, for example, the air pressure in the core pipe 510 is greater than or equal to 1500 psi; and/or the ratio between the inner diameter of the core tube 510 and the inner diameter of the air duct 101 is changed, the effect of the throttling effect is adjusted, the temperature of the first electrode 100 is greatly reduced, the area nearby the first electrode is frozen, the first electrode 100 can be kept stable relative to the preset area, the first electrode 100 and the preset area can be prevented from being rubbed, and therefore the preset area can be prevented from being scratched and the like.

In other embodiments, the plenum pressure in the core tube 510 may also be less than 1500 psi.

In one embodiment, as shown in fig. 8 and 9, the bipolar coolable probe further includes a separating sleeve 830, one end of the separating sleeve 830 is sleeved outside the first electrode 100, the other end of the separating sleeve 830 is sleeved outside the air inlet pipe 810, a connection portion between the air inlet pipe 810 and the core pipe 510 is located in the separating sleeve 830, an air outlet 831 is disposed on a side surface of the separating sleeve 830, and the air outlet pipe 820 is communicated with the air outlet 831. Because the two ends of the separating sleeve 830 are respectively sleeved with the first electrode 100 and the air inlet pipe 810, the relative position of the first electrode 100 and the air inlet pipe 810 can be kept stable, the joint of the air inlet pipe 810 and the core pipe 510 is positioned in the separating sleeve 830, when the air inlet pipe 810 is connected with the core pipe 510, the air inlet pipe 810 can play a role in limiting the core pipe 510, so that the core pipe 510 can keep stable in position in the air duct 101 of the first electrode 100, and meanwhile, when gas is discharged through the exhaust passage 102, the gas is discharged from the air outlet 831 on the side surface of the separating sleeve 830 and enters the air outlet pipe 820, so that the gas is discharged more conveniently, the resistance of gas discharge is reduced, and the throttling effect is improved.

In one embodiment, as shown in fig. 10, a first clamping portion 620 and a second clamping portion 630 are sequentially disposed in the cavity 601 along a direction close to the closed end 103, the first electrode 100 is disposed with a first matching portion 110, the second electrode 200 is disposed with a second matching portion 210, the first clamping portion 620 is clamped with the first matching portion 110, and the second clamping portion 630 is clamped with the second matching portion 210. Through the clamping cooperation of the first clamping portion 620 and the first matching portion 110, the second clamping portion 630 and the second matching portion 210, the relative positions of the first electrode 100 and the second electrode 200 can be ensured to be fixed, so that the bipolar coolable probe can stably work.

Optionally, as shown in fig. 1 and fig. 2, the bipolar coolable probe further includes a first conducting wire 910 and a second conducting wire 920, the first conducting wire 910 is electrically connected to the first electrode 100, and the second conducting wire 920 is electrically connected to the second electrode 200. The first wire 910 and the second wire 920 can be used to connect to an external circuit for controlling the first electrode 100 and the second electrode 200.

Optionally, as shown in fig. 1 and fig. 2, a branch pipe 610 is disposed on the handle 600 and is communicated with the cavity 601, the branch pipe 610 is disposed at an angle to the handle 600, and both the first conducting wire 910 and the second conducting wire 920 extend out of the handle 600 through the branch pipe 610.

Alternatively, the bipolar coolable probe may be used for "thermal ablation", such as microwave ablation, radio frequency ablation, etc., "cryoablation", and "steep pulsed electric field ablation", and in addition, the bipolar coolable probe may be used for other medical or operational procedures other than the three categories.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. The utility model provides a bipolar probe that can cool off which characterized in that, includes first electrode, second electrode, first insulating cover and second insulating cover, the fixed cover of first insulating cover is located outside the first electrode, the fixed cover of second electrode is located outside the first insulating cover, the insulating cover of second is located outside the second electrode, the insulating cover of second with second electrode sliding fit, be equipped with the cooling piece in the first electrode, the cooling piece is used for making the first electrode cooling.

2. The bipolar coolable probe of claim 1, wherein the cooling element is a core tube, the first electrode has an air channel therein, the core tube has an opening at a front end thereof, the core tube has a rear end thereof for communicating with a high pressure gas supply device, and an exhaust passage is provided between the core tube and the first electrode, the exhaust passage communicating with the air channel and the opening.

3. The bipolar coolable probe of claim 2 further comprising a handle, wherein the handle defines a cavity, the second insulating sleeve slidably extends through the handle and into the cavity, the first end of the first electrode defines a closed end, the closed end is disposed outside the handle, the second end of the first electrode defines an air outlet end, the air outlet end is disposed within the cavity, and the rear end of the core tube is disposed within the cavity.

4. The bipolar coolable probe of claim 3, wherein the handle has a slider attached to the second insulating sheath, the slider slidably engaging the handle, and the second electrode being snap-fitted to the handle.

5. The bipolar coolable probe of claim 4, wherein the handle has a mating opening communicating with the cavity, the slider includes a connecting portion, a sliding portion and an operating portion, the connecting portion is disposed in the cavity, the connecting portion is connected to the second insulating sleeve, the sliding portion is slidably engaged with the mating opening, and the operating portion is disposed outside the handle.

6. The bipolar coolable probe of claim 5, wherein the side wall of the mating port has at least two bayonets spaced apart along a length direction away from the second insulating sheath, and the sliding portion has an elastic member engaged with the bayonets.

7. The bipolar coolable probe of claim 5, wherein the connecting portion has a stop disposed thereon on a side of the connecting portion remote from the closed end.

8. The bipolar coolable probe of claim 3 further comprising an air inlet tube and an air outlet tube, wherein the air inlet tube is in communication with the core tube, the air outlet tube is in communication with the air outlet end, the air outlet tube is sleeved outside the air inlet tube, and an inner wall of the air outlet tube is spaced apart from an outer wall of the air inlet tube.

9. The bipolar coolable probe as claimed in claim 8, further comprising a separating sleeve, wherein one end of the separating sleeve is sleeved outside the first electrode, the other end of the separating sleeve is sleeved outside the air inlet pipe, the joint of the air inlet pipe and the core pipe is located in the separating sleeve, an air outlet is arranged on the side surface of the separating sleeve, and the air outlet pipe is communicated with the air outlet.

10. The bipolar coolable probe of claim 3, wherein a first clamping portion and a second clamping portion are sequentially disposed in the cavity in a direction close to the closed end, the first electrode is provided with a first matching portion, the second electrode is provided with a second matching portion, the first clamping portion is clamped with the first matching portion, and the second clamping portion is clamped with the second matching portion.

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