Dual electrode probe and method of operating the same

Abstract

The application discloses a double-electrode probe and an operation method thereof. The double-electrode probe comprises a first insulating sleeve, a first electrode and a second electrode. The first electrode is sleeved outside the first insulating sleeve, and the second electrode is sleeved outside the first insulating sleeve. The first electrode is in sliding fit with the first insulating sleeve. Since the first electrode is in sliding fit with the first insulating sleeve, the end of the first electrode can be extended out of the first insulating sleeve by sliding the first electrode or the first insulating sleeve. At this time, the distance of the end of the first electrode extending out of the first insulating sleeve can be adjusted according to the situation, that is, the exposed depth of the first electrode can be adjusted. Since the exposed depth of the first electrode can affect the range and intensity of the double-electrode probe, the exposed depth of the first electrode can be adjusted according to the actual situation, so that the double-electrode probe can better perform ablation treatment on the predetermined position. The range of the double-electrode probe is adjustable, the operation is simple, and the operation time can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a double electrode probe and an operation method thereof. BACKGROUND

[0002] The ablation surgery delivers low-energy electric pulses to cells to cause cell membrane penetration, imbalance and cell apoptosis. The ablation instrument delivers high-voltage low-energy direct current (LEDC) to ablate soft tissues, and this ablation method is called electroporation or irreversible electroporation (IRE). The double electrode probe is one of the keys to the ablation surgery. The exposed surface of the double electrode probe can generate echoes and improve visibility under ultrasound, and the exposure depth of the double electrode probe determines the height or depth of ablation. When the soft tissue of a tumor lesion is large, the ablation surgery needs to use two or more single double electrode probes to achieve the effect of ablation of soft tissues. However, due to the differences between different lesions, the traditional probe cannot be adjusted according to the actual situation, which will affect the surgical effect. SUMMARY

[0003] Therefore, the present application aims to overcome the defects of the prior art and provide an adjustable double electrode probe and an operation method thereof.

[0004] The technical scheme is as follows:

[0005] A double electrode probe comprises a first insulating sleeve, a first electrode and a second electrode. The first insulating sleeve is sleeved outside the first electrode, the second electrode is sleeved outside the first insulating sleeve, and the first electrode and the first insulating sleeve are in sliding fit.

[0006] The double electrode probe can adjust the distance between the end of the first electrode and the first insulating sleeve by sliding the first electrode or the first insulating sleeve, so as to adjust the exposure depth of the first electrode. The exposure depth of the first electrode can affect the range and intensity of the double electrode probe, so the exposure depth of the first electrode can be adjusted according to the actual situation, and the double electrode probe can better ablate the predetermined position. The range of the double electrode probe is adjustable, the effect is better, the operation is simple, and the operation time can be saved.

[0007] In one embodiment, the second electrode and the first insulating sleeve are in sliding fit.

[0008] In one embodiment, the double electrode probe further comprises a second insulating sleeve, the second insulating sleeve is sleeved outside the second electrode, and the second insulating sleeve and the second electrode are in sliding fit.

[0009] In one of the embodiments, two ends of the first electrode are a first end and a second end, two ends of the second electrode are a third end and a fourth end, the second end and the fourth end are used to be electrically connected with an external circuit, and in use, the front end of the second insulating sleeve, the third end, the front end of the first insulating sleeve and the first end are sequentially arranged.

[0010] In one of the embodiments, the double-electrode probe further comprises a handle, the handle is internally provided with a receiving cavity for receiving the second insulating sleeve, and the second insulating sleeve is slidably arranged through the handle.

[0011] In one of the embodiments, the rear end of the first insulating sleeve is provided with a first sliding block, the fourth end is provided with a second sliding block, the rear end of the second insulating sleeve is provided with a third sliding block, the first sliding block, the second sliding block and the third sliding block are arranged through the handle and slidably matched with the handle, and the second end is fixedly arranged in the receiving cavity.

[0012] In one of the embodiments, the length of the first end protruding from the first insulating sleeve is equal to the length of the third end protruding from the second insulating sleeve.

[0013] In one of the embodiments, the double-electrode probe further comprises a first wire and a second wire, the first electrode is used to be electrically connected with an external circuit through the first wire, the second electrode is used to be electrically connected with an external circuit through the second wire, and the first wire and the second wire are both provided with a spring-like structure.

[0014] In one of the embodiments, the double-electrode probe further comprises a sliding tube, the sliding tube comprises a first connecting part sleeved on the outside of the second wire and a second connecting part sleeved on the outside of the second electrode, the first connecting part is connected with the second connecting part, and the inner hole of the first connecting part is in communication with the inner hole of the second connecting part.

[0015] An operation method of the double-electrode probe, comprising the following steps:

[0016] Moving the first electrode or the first insulating sleeve so that the end of the first electrode protrudes from the first insulating sleeve;

[0017] Inserting the first electrode and the second electrode into a predetermined position;

[0018] Passing current through the first electrode and the second electrode.

[0019] The operation method can control the length of the first electrode exposed from the first insulation sleeve by moving the first electrode and / or the first insulation sleeve, and can also adjust the exposure depth of the first electrode according to actual conditions, so that the effect is better, and the operation is simple, and the operation time can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A half sectional view of the double-electrode probe according to an embodiment of the present application;

[0021] Figure 2 A half sectional view of the double-electrode probe according to an embodiment of the present application; Figure 1 An enlarged view of A in FIG. 4;

[0022] Figure 3 A side view of the first electrode, the first insulation sleeve, the second electrode and the second insulation sleeve according to an embodiment of the present application after assembly;

[0023] Figure 4 An oblique view of the double-electrode probe according to an embodiment of the present application;

[0024] Figure 5 An exploded view of the double-electrode probe according to an embodiment of the present application;

[0025] Figure 6 An exploded view of the handle, the first sliding block, the second sliding block and the third sliding block according to an embodiment of the present application;

[0026] Figure 7 A half sectional view of the handle according to an embodiment of the present application;

[0027] Figure 8 A half sectional view of the first sliding block according to an embodiment of the present application;

[0028] Figure 9 A half sectional view of the second sliding block according to an embodiment of the present application;

[0029] Figure 10 An assembly view of the handle, the first sliding block, the second sliding block and the third sliding block according to another embodiment of the present application;

[0030] Figure 11 An assembly view of the first sliding block, the second sliding block and the third sliding block according to another embodiment of the present application;

[0031] Figure 12 An exploded view of the handle, the first sliding block, the second sliding block and the third sliding block according to another embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 100, first insulating sleeve, 110, first sliding block, 111, first sliding slot, 111a, first clamping opening, 112, first positioning member, 113, first main body, 114, first pressing portion, 115, second accommodating groove, 116, second limiting opening, 117, first button, 118, first sleeve, 119a, third elastic member, 119b, third clamping block, 200, first electrode, 210, first end portion, 300, second electrode, 310, third end portion, 320, second sliding block, 321, second sliding slot, 321a, second clamping opening, 322, second positioning member, 323, second main body, 324, second pressing portion, 325, third accommodating groove, 326, third limiting opening, 327, second button, 328, second sleeve, 329a, first elastic member, 329b, first clamping block, 400, second insulating sleeve, 410, third sliding block, 411, third positioning member, 412, third main body, 413, third pressing portion, 414, third button, 415, third sleeve, 416, second elastic member, 417, second clamping block, 500, handle, 510, third sliding slot, 520, first accommodating groove, 530, first limiting opening, 540, adjustable groove, 541, third clamping opening, 610, first wire, 620, second wire, 700, sliding tube, 710, first connecting portion, 720, second connecting portion. DETAILED DESCRIPTION

[0034] For the purposes of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. It is expressly understood that the drawings are for illustration only and that the application can be embodied in many different forms. In addition, any specific reference to the drawings should not be construed as being limiting the present application.

[0035] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is to be understood that the term "or" as used herein encompasses both the conjunctive and disjunctive meanings of "or," unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein encompasses both conjunctive and disjunctive meanings of "and / or," unless the context clearly dictates otherwise.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety for the purpose of describing and disclosing the chemicals, pharmaceutical compositions, formulations, methodologies and procedures commonly used in the art and the accomplishments of the state of the art that are materially related to the computer software and computer technology described and claimed herein.

[0037] The "first", "second" in the present application do not represent the specific number and order, but only for the name of the distinction.

[0038] In the embodiment, the "predetermined position" is a region where a lesion appears, such as a tumor lesion.

[0039] As shown in Figures 1 to 3 An embodiment discloses a double electrode probe, which comprises a first insulating sleeve 100, a first electrode 200 and a second electrode 300. The first insulating sleeve 100 is sleeved outside the first electrode 200, and the second electrode 300 is sleeved outside the first insulating sleeve 100. The first electrode 200 and the first insulating sleeve 100 are in sliding fit.

[0040] The double electrode probe, since the first electrode 200 and the first insulating sleeve 100 are in sliding fit, the end of the first electrode 200 can be extended out of the first insulating sleeve 100 by sliding the first electrode 200 or the first insulating sleeve 100. At this time, the distance of the end of the first electrode 200 extending out of the first insulating sleeve 100 can be adjusted according to the situation, that is, the exposure depth of the first electrode 200 can be adjusted. Since the exposure depth of the first electrode 200 can affect the range and intensity of the double electrode probe, the exposure depth of the first electrode 200 can be adjusted according to the actual situation, so that the double electrode probe can better ablate the predetermined position. Therefore, the range of the double electrode probe can be adjusted, the effect is better, the operation is simple, and the operation time can be saved.

[0041] Alternatively, to make the end of the first electrode 200 extend out of the first insulating sleeve 100, the first electrode 200 can be fixed, and the first insulating sleeve 100 can be retracted; or the first insulating sleeve 100 can be fixed, and the first electrode 200 can be advanced; or the first electrode 200 and the first insulating sleeve 100 can be moved in the same direction, but the displacement of the first electrode 200 is greater than that of the first insulating sleeve 100.

[0042] Alternatively, in the axial direction of the first insulating sleeve 100, the end of the first insulating sleeve 100 is flush with the end of the second electrode 300; or the end of the first insulating sleeve 100 extends out of the second electrode 300. At this time, the first insulating sleeve 100 can better play the effect of insulation.

[0043] Alternatively, as shown in Figure 2 The end of the first electrode 200 for inserting into the predetermined position is a needle tip structure. The double electrode probe can be conveniently inserted into the predetermined position.

[0044] In one embodiment, the second electrode 300 is in sliding fit with the first insulating sleeve 100. Since the second electrode 300 is also in sliding fit with the first insulating sleeve 100, the first electrode 200 and the second electrode 300 can be inserted into a predetermined position and powered on by adjusting the positions between the first electrode 200 and the second electrode 300 on both sides of the first insulating sleeve 100, and the first electrode 200 and the second electrode 300 are conductive to form a current to ablate the predetermined position. Therefore, the relative positions of the first electrode 200 and the second electrode 300 determine the length of the current path, and thus determine the size of the abovementioned double-electrode probe. By sliding the second electrode 300 relative to the first insulating sleeve 100, the range of the abovementioned double-electrode probe can be adjusted, so that the abovementioned double-electrode probe can be adjusted more accurately according to the actual situation, and the effect of the operation is improved.

[0045] In other embodiments, the relative positions of the second electrode 300 and the first insulating sleeve 100 can also be fixed. At this time, the exposure depth of the second electrode 300 is fixed, and the exposure depth of the first electrode 200 can be controlled by adjusting the distance of the first electrode 200 extending out of the first insulating sleeve 100, so that the range and intensity of the abovementioned double-electrode probe can be adjusted.

[0046] In one embodiment, as shown in Figures 1 to 3 The abovementioned double-electrode probe further comprises a second insulating sleeve 400, the second insulating sleeve 400 is sleeved outside the second electrode 300, and the second insulating sleeve 400 is in sliding fit with the second electrode 300. At this time, the exposure depth of the second electrode 300 can be adjusted by controlling the distance of the second electrode 300 extending out of the second insulating sleeve 400, so that the abovementioned double-electrode probe can better adjust the range and intensity, and the effect of the operation is improved.

[0047] In other embodiments, the second electrode 300 can also be coated with an insulating layer, and the end of the second electrode 300 can be conductive. At this time, the exposure depth of the second electrode 300 is fixed, but the double-electrode probe can be adjusted by adjusting the exposure depth of the first electrode 200.

[0048] In one embodiment, as shown in Figure 2As shown, two ends of the first electrode 200 are a first end 210 and a second end, and two ends of the second electrode 300 are a third end 310 and a fourth end, the second end and the fourth end are used to be electrically connected with an external circuit, in the use state, the front end of the second insulation sleeve 400, the third end 310, the front end of the first insulation sleeve 100 and the first end 210 are sequentially arranged. By moving, the front end of the second insulation sleeve 400, the third end 310, the front end of the first insulation sleeve 100 and the first end 210 are sequentially arranged, so that the first electrode 200 and the second electrode 300 will not be short-circuited, and the exposed depth of the first electrode 200 is adjusted by the first insulation sleeve 100, the exposed depth of the second electrode 300 is adjusted by the second insulation sleeve 400, the adjustment precision is higher, the double-electrode probe can better process the predetermined position, and the effect can be improved.

[0049] Specifically, the "use state" is the state when the double-electrode probe is adjusted and is about to be inserted into the predetermined position.

[0050] In one embodiment, as shown in Figure 4 The double-electrode probe further comprises a handle 500, the handle is provided with a containing cavity for containing the second insulation sleeve, and the second insulation sleeve 400 slides through the handle 500. At this time, the second insulation sleeve 400, the second electrode 300, the first insulation sleeve 100 and the first electrode 200 are partially located in the handle 500, the handle 500 facilitates the holding of the operating personnel, and the handle 500 can prevent the personnel from directly contacting the electrode, so the safety is good.

[0051] Optionally, the handle 500 is tubular. The overall size of the double-electrode probe can be reduced, and the use is facilitated.

[0052] In one embodiment, as shown in Figure 5 and Figure 6 The rear end of the first insulation sleeve 100 is provided with a first sliding block 110, the fourth end is provided with a second sliding block 320, and the rear end of the second insulation sleeve 400 is provided with a third sliding block 410. The first sliding block 110, the second sliding block 320 and the third sliding block 410 slide through the handle 500 and slide with the handle 500, and the second end is fixedly arranged in the containing cavity. At this time, the exposed depth of the first electrode 200 and the second electrode 300 can be adjusted by sliding the corresponding first sliding block 110, second sliding block 320 and third sliding block 410. In addition, since the first electrode 200 does not move at this time, the first insulation sleeve 100 can be retracted by sliding the third sliding block 410, so that the first end 210 of the first electrode 200 extends out of the first insulation sleeve 100.

[0053] Optionally, as shown in Figure 6As shown, the first slider 110 is provided with a first sliding groove 111, the second slider 320 is in sliding cooperation with the first sliding groove 111, the second slider 320 is provided with a second sliding groove 321, and the third slider 410 is in sliding cooperation with the second sliding groove 321. At this time, since the third slider 410 is limited in the second sliding groove 321 and the second slider 320 is limited in the first sliding groove 111, when the first slider 110 moves, the second slider 320 and the third slider 410 can be driven to move together with the first slider 110, so that the first insulating sleeve 100, the second electrode 300 and the second insulating sleeve 400 move together to adjust the exposure depth of the first electrode 200. At this time, the adjustable distance of the second slider 320 is the sliding distance of the second slider 320 along the first sliding groove 111. Then, moving the second slider 320 can drive the third slider 410 to move together, so that the second electrode 300 and the second insulating sleeve 400 move together. At this time, the adjustable distance of the third slider 410 is the sliding distance of the third slider 410 along the second sliding groove 321. Finally, sliding the third slider 410 can move the second insulating sleeve 400 to adjust the exposure depth of the second electrode 300. The above structure realizes the adjustment of the exposure depths of the first electrode 200 and the second electrode 300 in turn, ensures the insulation between the first electrode 200 and the second electrode 300, and further adjusts the positions of the second slider 320 and the third slider 410 after moving a certain distance together with the first slider 110, which reduces the time spent in adjustment, improves the accuracy of adjustment, and is beneficial to reducing the operation time.

[0054] In other embodiments, the first slider 110, the second slider 320 and the third slider 410 are respectively arranged at different positions on the handle 500. At this time, the movements between the first slider 110, the second slider 320 and the third slider 410 are irrelevant to each other, and the sliding of the first slider 110, the second slider 320 or the third slider 410 can be adjusted respectively.

[0055] Optionally, as Figures 5 to 7As shown, the handle 500 is provided with a third sliding groove 510 which is in sliding cooperation with the first sliding block 110, the second sliding block 320 and the third sliding block 410. The sidewall of the third sliding groove 510 is provided with a first accommodating groove 520. The first sliding block 110 is provided with a first positioning member 112 which extends into the first accommodating groove 520. The first accommodating groove 520 is arranged along the axial direction of the first electrode 200. The sidewall of the third sliding groove 510 is further provided with at least two first limiting openings 530 which are arranged along the axial direction of the first electrode 200 in sequence. The first limiting openings 530 are located above the first accommodating groove 520 and are in communication with the first accommodating groove 520. The first positioning member 112 can be located in the first accommodating groove 520 or the first limiting opening 530. When the first positioning member 112 is located in the first accommodating groove 520, the first sliding block 110 can move along the third sliding groove 510. When the first positioning member 112 enters the first limiting opening 530 from the first accommodating groove 520, the first positioning member 112 is limited by the first limiting opening 530, so that the position of the first sliding block 110 in the third sliding groove 510 is relatively fixed. Therefore, through the cooperation of the first positioning member 112 and the first accommodating groove 520 or the first limiting opening 530, the first sliding block 110 is in sliding or fixed state, which facilitates the adjustment of the position of the first electrode 200.

[0056] Specifically, one side opening of the first limiting opening 530 is located on the outer surface of the handle 500. At this time, the first positioning member 112 located in different first limiting openings 530 can be directly observed, and the adjustment of the first electrode 200 can be understood.

[0057] Optionally, as shown in FIG. 6, the first limiting opening 530 is provided with a second accommodating groove 532 which is in communication with the first accommodating groove 520. The first positioning member 112 can be located in the second accommodating groove 532. When the first positioning member 112 is located in the second accommodating groove 532, the first sliding block 110 can move along the third sliding groove 510. Figure 6 and Figure 8As shown, the first slider 110 comprises a first body part 113 and a first pressing part 114, the first body part 113 is connected with the first pressing part 114, the first sliding groove 111 is arranged at one end of the first body part 113, the first pressing part 114 is arranged at the other end of the first body part 113, and a first pressing opening is arranged between the first body part 113 and the first pressing part 114. The first positioning piece 112 is connected with the first pressing part 114. The first pressing part 114 has a first state and a second state. In the first state, the first positioning piece 112 is located in the first limiting opening 530. In the second state, the first pressing part 114 is pressed and bent towards the first pressing opening, and the first positioning piece 112 is located in the first accommodating groove 520. By pressing the first pressing part 114, the first positioning piece 112 connected with the first pressing part 114 can be located in the first accommodating groove 520. Then, the first positioning piece 112 can slide along the first accommodating groove 520, that is, the first slider 110 can slide along the third sliding groove 510 to adjust the extension distance of the first electrode 200. Then, the first pressing part 114 is released, and the first positioning piece 112 enters the first limiting opening 530. At this time, the first positioning piece 112 is limited by the first limiting opening 530, and the position of the first electrode 200 is fixed. The first electrode 200 can be conveniently inserted into the predetermined position.

[0058] Optionally, the first sliding groove 111 and the second sliding groove 321 are arranged along the axial direction of the first electrode 200.

[0059] Optionally, as shown in Figure 6 and Figure 8 , the inner wall of the first sliding groove 111 is provided with a second accommodating groove 115, and the second positioning piece 322 of the second slider 320 extends into the second accommodating groove 115. The second accommodating groove 115 is arranged along the axial direction of the first electrode 200. The side wall of the first sliding groove 111 is further provided with at least two second limiting openings 116 arranged at intervals. Different second limiting openings 116 are arranged along the axial direction of the first electrode 200 in sequence. The second limiting opening 116 is located above the second accommodating groove 115 and communicates with the second accommodating groove 115. Specifically, one side opening of the second limiting opening 116 is located on the outer surface of the first slider 110.

[0060] Specifically, as shown in Figure 6 and Figure 9As shown, the second slider 320 comprises a second main body part 323 and a second pressing part 324, the second main body part 323 is connected with the second pressing part 324, the second sliding groove 321 and the second pressing part 324 are respectively arranged at two ends of the second main body part 323, and a second pressing opening is arranged between the second main body part 323 and the second pressing part 324, the second positioning part 322 is connected with the second pressing part 324, the second pressing part 324 has a third state and a fourth state, in the third state, the second positioning part 322 is located in the second limiting opening 116, in the fourth state, the second pressing part 324 is pressed and bent towards the second pressing opening, and the second positioning part 322 is located in the second accommodating groove 115.

[0061] Optionally, as shown in Figure 6 and Figure 9 , a third accommodating groove 325 is arranged on the inner wall of the second sliding groove 321, the third positioning part 411 of the third slider 410 is arranged to extend into the third accommodating groove 325, the third accommodating groove 325 is arranged along the axial direction of the first electrode 200, and at least two third limiting openings 326 are further arranged on the side wall of the second sliding groove 321 in a spaced manner, different third limiting openings 326 are arranged along the axial direction of the first electrode 200 in sequence, the third limiting opening 326 is located above the third accommodating groove 325 and the third limiting opening 326 is communicated with the third accommodating groove 325. Specifically, the side opening of the third limiting opening 326 is located on the outer surface of the second slider 320.

[0062] Specifically, as shown in Figure 6 , the third slider 410 comprises a third main body part 412 and a third pressing part 413, the third main body part 412 is connected with the third pressing part 413, and a third pressing opening is arranged between the third main body part 412 and the third pressing part 413, the third positioning part 411 is connected with the third pressing part 413, the third pressing part 413 has a fifth state and a sixth state, in the fifth state, the third positioning part 411 is located in the third limiting opening 326, in the sixth state, the third pressing part 413 is pressed and bent towards the third pressing opening, and the third positioning part 411 is located in the third accommodating groove 325.

[0063] Specifically, the number of the second limiting openings 116 is less than the number of the third limiting openings 326, and the number of the second limiting openings 116 is less than the number of the first limiting openings 530. Since the sliding of the first slider 110 and the third slider 410 determines the exposure depth of the first electrode 200 and the second electrode 300, the number of the first limiting openings 530 and the third limiting openings 326 is relatively large, which can increase the adjustment range and increase the applicability of the above-mentioned double-electrode probe.

[0064] Specifically, as shown in Figure 6As shown, the first slider 110 further comprises a first button 117 arranged outside the handle 500 and connected with the first pressing part 114, the second slider 320 further comprises a second button 327 arranged outside the handle 500 and connected with the second pressing part 324, and the third slider 410 further comprises a third button 414 arranged outside the handle 500 and connected with the third pressing part 413. At this time, the first, second and third sliders can be conveniently pressed and pushed to move.

[0065] Optionally, as shown in Figure 5 and Figure 6 , the first slider 110 comprises a first sleeve 118 sleeved outside the first insulating sleeve 100, the second slider 320 comprises a second sleeve 328 sleeved outside the second electrode 300, and the third slider 410 comprises a third sleeve 415 sleeved outside the second insulating sleeve 400. The portions of the first, second and third sleeves located in the handle 500 are matched with the accommodating cavities, and the first, second and third sleeves are arranged in a spaced manner. At this time, the first, second and third sliders can limit the first insulating sleeve 100, the second electrode 300 and the second insulating sleeve 400 respectively, and can ensure that the first, second and third sliders remain stable in their respective radial directions during movement.

[0066] Specifically, the first sleeve 118 is connected with the first main body part 113, the second sleeve 328 is connected with the second main body part 323, and the third sleeve 415 is connected with the third main body part 412.

[0067] In other embodiments, as shown in Figures 10 to 12As shown, the first sliding groove 111 is provided with at least two first clamping holes 111a, the first clamping holes 111a are arranged along the length direction of the first sliding groove 111, the second sliding block 320 is provided with a first elastic piece 329a which can be elastically deformed, the first elastic piece 329a has a first normal state and a first bending state, in the first normal state, the end of the first elastic piece 329a is clamped in the first clamping hole 111a, in the first bending state, the first elastic piece 329a is separated from the first clamping hole 111a and located in the first sliding groove 111, the second sliding groove 321 is provided with at least two second clamping holes 321a, the second clamping holes 321a are arranged along the length direction of the second sliding groove 321, the third sliding block 410 is provided with a second elastic piece 416 which can be elastically deformed, the second elastic piece 416 has a second normal state and a second bending state, in the second normal state, the end of the second elastic piece 416 is arranged in the second clamping hole 321a, in the second bending state, the second elastic piece 416 is separated from the second clamping hole 321a and located in the second sliding groove 321, the handle 500 is provided with an adjustable slot 540, the adjustable slot 540 is arranged along the length direction of the third sliding groove 510, the side wall of the adjustable slot 540 is provided with at least two adjustable slots 540, the adjustable slots 540 are arranged along the length direction of the adjustable slot 540, the first sliding block 110 is provided with a third elastic piece 119a which can be elastically deformed, the third elastic piece 119a has a third normal state and a third bending state, in the third normal state, the end of the third elastic piece 119a is arranged in the adjustable slot 540, in the third bending state, the third elastic piece 119a is separated from the third clamping hole 541 and located in the third sliding groove 510. In the above structure, the front sliding block can also move relative to the rear sliding block, and the rear sliding block can also drive the front sliding block to move at the same time when the rear sliding block moves, and the sliding block can also move a certain distance each time, which is convenient for adjustment.

[0068] Specifically, as shown in the first embodiment of the application, Figures 10 to 12 the end of the first elastic piece 329a is provided with a first clamping block 329b for clamping into the first clamping hole 111a, the end of the second elastic piece 416 is provided with a second clamping block 417 for clamping into the second clamping hole 321a, and the end of the third elastic piece 119a is provided with a third clamping block 119b for clamping into the adjustable slot 540.

[0069] Specifically, as shown in the first embodiment of the application, Figures 10 to 12 the end of the first sliding block 110 is provided with a V-shaped notch, and the two sides of the V-shaped notch form the third elastic piece 119a, the end of the second sliding block 320 is provided with a V-shaped notch, and the two sides of the V-shaped notch form the first elastic piece 329a, and the end of the third sliding block 410 is provided with a V-shaped notch, and the two sides of the V-shaped notch form the second elastic piece 416.

[0070] In one of the embodiments, the first end 210 extends out of the first insulating sleeve 100 by a length equal to that of the third end 310 extending out of the second insulating sleeve 400. At this time, the exposed depths of the first electrode 200 and the second electrode 300 are equal, and thus the current intensity is stable when a path is formed between the first electrode 200 and the second electrode 300, and the use effect is good.

[0071] In one of the embodiments, as shown in Figure 4 and Figure 5 The double-electrode probe further includes a first connecting wire 610 and a second connecting wire 620. The first electrode 200 is electrically connected to an external circuit through the first connecting wire 610, and the second electrode 300 is electrically connected to the external circuit through the second connecting wire 620. The first connecting wire 610 and the second connecting wire 620 are both provided with spring-like structures. Since the relative positions of the first electrode 200 and the second electrode 300 need to be adjusted when the exposed depths of the first electrode 200 and the second electrode 300 are adjusted, the first connecting wire 610 or the second connecting wire 620 may be moved accordingly. Therefore, the first connecting wire 610 and the second connecting wire 620 are both provided with spring-like structures, so that the first connecting wire 610 or the second connecting wire 620 can be stretched or compressed, and the joints of the first connecting wire 610 or the second connecting wire 620 will not be damaged due to the movement.

[0072] Optionally, the first connecting wire 610 and the second connecting wire 620 are arranged side by side. At this time, the overall structure of the double-electrode probe is relatively compact, the radial size thereof can be reduced, and the use is more convenient.

[0073] In one of the embodiments, as shown in Figure 5 The double-electrode probe further includes a sliding tube 700. The sliding tube 700 includes a first connecting part 710 sleeved on the second connecting wire 620 and a second connecting part 720 sleeved on the second electrode 300. The first connecting part 710 is connected to the second connecting part 720, and the inner hole of the first connecting part 710 is in communication with the inner hole of the second connecting part 720. Since the second electrode 300 is sleeved on the first electrode 200, the connection between the second electrode 300 and the second connecting wire 620 will be pulled when the second electrode 300 moves. Therefore, the sliding tube 700 can be used to protect the connection between the second electrode 300 and the second connecting wire 620.

[0074] One of the embodiments discloses an operation method of the double-electrode probe. The operation method includes the following steps:

[0075] Moving the first electrode 200 or the first insulating sleeve 100 so that the end of the first electrode 200 extends out of the first insulating sleeve 100;

[0076] Inserting the first electrode 200 and the second electrode 300 into a predetermined position;

[0077] The first electrode 200 and the second electrode 300 are energized.

[0078] The operation method, by extending the end of the first electrode 200 out of the first insulating sleeve 100, and then energizing the first electrode 200 and the second electrode 300 to the predetermined position, forms a passage between the first electrode 200 and the second electrode 300. Since the length of the first electrode 200 exposed out of the first insulating sleeve 100 can be controlled through the first electrode 200 or the first insulating sleeve 100, the exposed depth of the first electrode 200 can be adjusted according to the actual situation, and the effect is better, and the operation is simple, and the operation time can be saved.

[0079] Specifically, the first electrode 200 or the first insulating sleeve 100 is moved to extend the end of the first electrode 200 out of the first insulating sleeve 100, which specifically includes the following steps:

[0080] The first electrode 200 is kept stationary, and the second electrode 300 and the first insulating sleeve 100 are retracted to extend the end of the first electrode 200 out of the first insulating sleeve 100.

[0081] At this time, by keeping the first electrode 200 stationary, only the first insulating sleeve 100 and the second electrode 300 need to be retracted to adjust the exposed depth of the first electrode 200, which can reduce the operation time.

[0082] In other embodiments, the first insulating sleeve 100 can also be kept stationary, and the first electrode 200 is moved to extend the end of the first electrode 200 out of the first insulating sleeve 100. The above-mentioned effects can also be achieved.

[0083] The technical features of the above-mentioned embodiments can be combined in any way. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0084] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A two-electrode probe, characterized by, The utility model provides a first insulating sleeve, first electrode, second insulating sleeve, second electrode and handle, the first insulating sleeve is sleeved in the first electrode outside, the second electrode is sleeved in the first insulating sleeve outside, the first electrode and the first insulating sleeve sliding fit, the second electrode and the first insulating sleeve sliding fit, the second insulating sleeve sliding is equipped with the handle, the second insulating sleeve is sleeved in the second electrode outside, the second insulating sleeve and the second electrode sliding fit, Two ends of the first electrode are a first end and a second end, and two ends of the second electrode are a third end and a fourth end, the second end and the fourth end are used for electrically connecting with an external circuit, A first sliding block is arranged on the rear end of the first insulating sleeve, a second sliding block is arranged on the fourth end, a third sliding block is arranged on the rear end of the second insulating sleeve, a first sliding groove is arranged on the first sliding block, a second sliding groove is arranged on the second sliding block, and a third sliding groove is arranged on the handle, A first accommodating groove is arranged on the side wall of the third sliding groove in the axial direction of the first electrode, a first positioning piece is arranged on the first sliding block and extends into the first accommodating groove, and at least two first limiting openings are arranged on the side wall of the third sliding groove in the axial direction of the first electrode, the first limiting openings are located above the first accommodating groove and communicate with the first accommodating groove, A second accommodating groove is arranged on the inner wall of the first sliding groove in the axial direction of the first electrode, a second positioning piece is arranged on the second sliding block and extends into the second accommodating groove, and at least two second limiting openings are arranged on the side wall of the first sliding groove in the axial direction of the first electrode, the second limiting openings are located above the second accommodating groove and communicate with the second accommodating groove, A third accommodating groove is arranged on the inner wall of the second sliding groove in the axial direction of the first electrode, a third positioning piece is arranged on the third sliding block and extends into the third accommodating groove, and at least two third limiting openings are arranged on the side wall of the second sliding groove in the axial direction of the first electrode, the third limiting openings are located above the third accommodating groove and communicate with the third accommodating groove.

2. The dual electrode probe of claim 1, wherein, An accommodating cavity is arranged in the handle for accommodating the second insulating sleeve.

3. The dual electrode probe of claim 2, wherein, The first sliding block, the second sliding block and the third sliding block pass through the handle and slide with the handle, and the second end is fixedly arranged in the accommodating cavity.

4. The dual electrode probe of claim 1, wherein, The length of the first end extending out of the first insulating sleeve is equal to the length of the third end extending out of the second insulating sleeve.

5. The dual electrode probe of any one of claims 1-4, wherein, A first wire and a second wire are further arranged, the first electrode is used for electrically connecting with the external circuit through the first wire, the second electrode is used for electrically connecting with the external circuit through the second wire, and spring-shaped structures are arranged on the first wire and the second wire.

6. The dual electrode probe of claim 5, wherein, A sliding tube is further arranged, the sliding tube comprises a first connecting part sleeved outside the second wire and a second connecting part sleeved outside the second electrode, the first connecting part is connected with the second connecting part, and the inner hole of the first connecting part communicates with the inner hole of the second connecting part.

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