WO2021068620A1 - 双电极探针及其操作方法 - Google Patents

双电极探针及其操作方法 Download PDF

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Publication number
WO2021068620A1
WO2021068620A1 PCT/CN2020/106405 CN2020106405W WO2021068620A1 WO 2021068620 A1 WO2021068620 A1 WO 2021068620A1 CN 2020106405 W CN2020106405 W CN 2020106405W WO 2021068620 A1 WO2021068620 A1 WO 2021068620A1
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WIPO (PCT)
Prior art keywords
electrode
insulating sleeve
sliding block
sliding
double
Prior art date
Application number
PCT/CN2020/106405
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English (en)
French (fr)
Inventor
赖燊
Original Assignee
深圳钮迈科技有限公司
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Filing date
Publication date
Application filed by 深圳钮迈科技有限公司 filed Critical 深圳钮迈科技有限公司
Priority to EP20874366.6A priority Critical patent/EP4042961A4/en
Publication of WO2021068620A1 publication Critical patent/WO2021068620A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/148—Probes or electrodes therefor having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00059—Material properties
    • A61B2018/00071—Electrical conductivity
    • A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00184—Moving parts
    • A61B2018/00196—Moving parts reciprocating lengthwise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00613—Irreversible electroporation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • A61B2018/0094—Types of switches or controllers
    • A61B2018/00946—Types of switches or controllers slidable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/147—Electrodes transferring energy by capacitive coupling, i.e. with a dielectricum between electrode and target tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1475—Electrodes retractable in or deployable from a housing

Definitions

  • the present invention relates to the technical field of medical equipment, in particular to a double-electrode probe and an operation method thereof.
  • the steep pulse therapy instrument delivers high-voltage low-energy direct current (LEDC) to ablate soft tissues. This ablation method is called electroporation or irreversible electroporation (IRE).
  • LEDC low-energy direct current
  • IRE irreversible electroporation
  • the dual-electrode probe is one of the keys to steep pulse surgery.
  • the exposed surface of the dual-electrode probe can generate echoes, which can be placed under ultrasound to improve visibility.
  • the exposure depth of the dual-electrode probe determines the height or depth of ablation.
  • the present invention overcomes the defects of the prior art and provides an adjustable double-electrode probe and an operating method thereof.
  • a double-electrode probe includes a first insulating sleeve, a first electrode and a second electrode, the first insulating sleeve is sleeved outside the first electrode, and the second electrode is sleeved on the first insulating sleeve In addition, the first electrode is in sliding fit with the first insulating sleeve.
  • the end of the first electrode is extended out of the first insulating sleeve by sliding the first electrode or the first insulating sleeve. At this time, it can be adjusted according to the situation.
  • the distance that the end of the first electrode extends from the first insulating sleeve can adjust the exposure depth of the first electrode. Since the exposure depth of the first electrode can affect the range and strength of the double-electrode probe mentioned above, it can be adjusted according to the actual situation.
  • the exposure depth of the first electrode is adjusted accordingly, so that the double-electrode probe can better perform ablation treatment on the predetermined position, and the range of action of the double-electrode probe can be adjusted, the effect is better, the operation is simple, and it can be used. Save operation time.
  • the second electrode is slidingly fitted with the first insulating sleeve.
  • the above-mentioned double-electrode probe further includes a second insulating sleeve, the second insulating sleeve is sleeved outside the second electrode, and the second insulating sleeve is slidingly fitted with the second electrode.
  • the two ends of the first electrode are a first end and a second end, respectively, and the two ends of the second electrode are a third end and a fourth end, respectively.
  • the second end and the fourth end are both used to electrically connect to an external circuit.
  • the front end of the second insulating sleeve, the third end, and the first insulating sleeve The front end and the first end are extended in sequence.
  • the above-mentioned dual-electrode probe further includes a handle, and a accommodating cavity for accommodating the second insulating sleeve is provided in the handle, and the second insulating sleeve slides through the handle.
  • the rear end of the first insulating sleeve is provided with a first slider
  • the fourth end is provided with a second slider
  • the rear end of the second insulating sleeve is provided with a first slider.
  • the third slider, the first slider, the second slider, and the third slider pass through the handle and slidably fit with the handle, and the second end is fixed to the receiving Cavity.
  • the length of the first end extending from the first insulating sleeve is equal to the length of the third end extending from the second insulating sleeve.
  • the above-mentioned two-electrode probe further includes a first wire and a second wire, the first electrode is used to electrically connect to an external circuit through the first wire, and the second electrode is used to pass The second wiring is electrically connected to an external circuit, and both the first wiring and the second wiring are provided with a spring-like structure.
  • the above-mentioned dual-electrode probe further includes a sliding tube, and the sliding tube includes a first connection part sleeved outside the second wire and a second connection part sleeved outside the second electrode.
  • the first connecting portion is connected to the second connecting portion, and the inner hole of the first connecting portion communicates with the inner hole of the second connecting portion.
  • An operating method using the above-mentioned double-electrode probe includes the following steps:
  • the first electrode and the second electrode are energized.
  • Fig. 1 is a half-sectional view of a double-electrode probe according to an embodiment of the present invention
  • Fig. 2 is an enlarged schematic diagram of A in Fig. 1;
  • FIG 3 is a side view of the first electrode, the first insulating sleeve, the second electrode, and the second insulating sleeve according to the embodiment of the present invention
  • Figure 4 is an oblique view of the double-electrode probe according to an embodiment of the present invention.
  • Fig. 5 is an exploded schematic diagram of the double-electrode probe according to an embodiment of the present invention.
  • FIG. 6 is an exploded schematic diagram of the handle, the first slider, the second slider, and the third slider according to an embodiment of the present invention
  • Figure 7 is a half-sectional view of the handle according to an embodiment of the present invention.
  • FIG. 8 is a half-sectional view of the first sliding block according to an embodiment of the present invention.
  • Figure 9 is a half-sectional view of the second slider according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the assembly of the handle, the first slider, the second slider, and the third slider according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of assembly of the first slider, the second slider, and the third slider according to another embodiment of the present invention.
  • Fig. 12 is an exploded schematic diagram of the handle, the first slider, the second slider, and the third slider according to another embodiment of the present invention.
  • first and second in the present invention do not represent a specific number and order, but are merely used to distinguish names.
  • the "predetermined location" is an area where a lesion occurs, such as a tumor lesion.
  • an embodiment discloses a two-electrode probe, which includes a first insulating sleeve 100, a first electrode 200, and a second electrode 300.
  • the first insulating sleeve 100 is sleeved on the first electrode 200.
  • the second electrode 300 is sleeved outside the first insulating sleeve 100, and the first electrode 200 is slidingly fitted with the first insulating sleeve 100.
  • the end of the first electrode 200 extends out of the first insulating sleeve 100 by sliding the first electrode 200 or the first insulating sleeve 100, At this time, the distance that the end of the first electrode 200 protrudes from the first insulating sleeve 100 can be adjusted according to the situation, and the exposure depth of the first electrode 200 can be adjusted.
  • the exposure depth of the first electrode 200 can affect the above-mentioned double electrode probe
  • the range and strength of the action therefore, the exposure depth of the first electrode 200 can be adjusted accordingly according to the actual situation, so that the double-electrode probe can better perform ablation treatment on the predetermined position, then the action range of the double-electrode probe Adjustable, better effect, simple operation, can save operation time.
  • the first electrode 200 in order 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 fixed. Advance; or make the first electrode 200 and the first insulating sleeve 100 move in the same direction, but the displacement of the first electrode 200 is greater than the displacement 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.
  • the first insulating sleeve 100 can achieve a better insulation effect.
  • one end of the first electrode 200 for inserting into a predetermined position has a needle tip structure.
  • the two-electrode probe can be easily inserted into a predetermined position.
  • the second electrode 300 is slidingly fitted with the first insulating sleeve 100. Since the second electrode 300 can also be slidably fitted with the first insulating sleeve 100, the first electrode 200 and the second electrode 300 can be inserted by adjusting the position between the first electrode 200 and the second electrode 300 on both sides of the first insulating sleeve 100 After the predetermined position is energized, the first electrode 200 and the second electrode 300 are connected to form a current to ablate the predetermined position. Therefore, the relative position of the first electrode 200 and the second electrode 300 determines the length of the path through which the current flows.
  • the second electrode 300 slides relative to the first insulating sleeve 100 to adjust the range of the double-electrode probe, so that the double-electrode probe can be more accurately based on actual conditions. The situation is adjusted accordingly to improve the effect of the operation.
  • the relative position 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 constant. By adjusting only the distance that the first electrode 200 extends out of the first insulating sleeve 100, the exposure depth of the first electrode 200 can be controlled, and the range of action of the above-mentioned dual-electrode probe can also be adjusted. And strength.
  • the above-mentioned double-electrode probe further includes a second insulating sleeve 400, the second insulating sleeve 400 is sleeved outside the second electrode 300, and the second insulating sleeve 400 is connected to the second insulating sleeve 400.
  • the two electrodes 300 are in sliding fit. At this time, by controlling the distance that the second electrode 300 extends out of the second insulating sleeve 400, the exposure depth of the second electrode 300 can be adjusted, so that the above-mentioned dual-electrode probe can better adjust the range and strength of the operation, and improve the effect of surgery. .
  • the second electrode 300 may also be coated with an insulating layer, and the end of the second electrode 300 may be conductive. At this time, the exposure depth of the second electrode 300 is constant, but the dual electrode probe can be adjusted by adjusting the exposure depth of the first electrode 200.
  • the two ends of the first electrode 200 are respectively a first end 210 and a second end
  • the two ends of the second electrode 300 are respectively a third end 310 and
  • the fourth end, the second end, and the fourth end are all used for electrical connection with an external circuit.
  • the front end of the second insulating sleeve 400, the third end 310, and the front end of the first insulating sleeve 100 And the first end 210 extends in sequence.
  • the front end of the second insulating sleeve 400, the third end 310, the front end of the first insulating sleeve 100, and the first end 210 are arranged in sequence, so that the first electrode 200 and the second electrode 300 will not be short-circuited.
  • the first insulating sleeve 100 is used to adjust the exposure depth of the first electrode 200
  • the second insulating sleeve 400 is used to adjust the exposure depth of the second electrode 300.
  • the adjustment accuracy is higher and the double electrode probe is better.
  • the processing of the predetermined position can improve the effect.
  • the above-mentioned “used state” refers to the state when the two-electrode probe is to be inserted into a predetermined position after the adjustment is completed.
  • the above-mentioned dual-electrode probe further includes a handle 500.
  • the handle is provided with an accommodating cavity for accommodating the second insulating sleeve, and the second insulating sleeve 400 slides through the handle 500.
  • the second insulating sleeve 400, the second electrode 300, the first insulating sleeve 100, and the first electrode 200 are all partially located in the handle 500.
  • the handle 500 facilitates the operation of the operation personnel to hold, and the handle 500 can prevent the personnel from directly contacting Electrode, good safety.
  • the handle 500 is tubular.
  • the overall size of the double-electrode probe can be reduced, and it is convenient to use.
  • a first slider 110 is provided on the rear end of the first insulating sleeve 100
  • a second slider 320 is provided on the fourth end
  • the second insulating sleeve The rear end of the 400 is provided with a third slider 410, the first slider 110, the second slider 320, and the third slider 410 pass through the handle 500 and slidably fit with the handle 500, and the second end is fixed in the accommodating cavity Inside.
  • the exposure depth of the first electrode 200 and the second electrode 300 can be adjusted by sliding the corresponding first slider 110, second slider 320, and third slider 410.
  • the first insulating sleeve 100 can be retracted by sliding the third sliding block 410 so that the first end 210 of the first electrode 200 can extend out of the first insulating sleeve 100.
  • a first sliding groove 111 is provided on the first sliding block 110, the second sliding block 320 is slidably fitted with the first sliding groove 111, and a second sliding groove is arranged on the second sliding block 320 321, the third sliding block 410 and the second sliding groove 321 are slidingly fitted.
  • the third sliding block 410 is confined in the second sliding groove 321 and the second sliding block 320 is confined in the first sliding groove 111, when the first sliding block 110 moves, the second sliding block 320 and The third slider 410 moves together with the first slider 110 to move the first insulating sleeve 100, the second electrode 300, and the second insulating sleeve 400 together to adjust the exposure depth of the first electrode 200.
  • the second slider 320 The adjustable distance is the distance that the second sliding block 320 slides along the first sliding groove 111, and then moving the second sliding block 320 can drive the third sliding block 410 to move together, so that the second electrode 300 and the second insulating sleeve 400 are together
  • the adjustable distance of the third sliding block 410 at this time is the distance that the third sliding block 410 slides along the second sliding groove 321, and finally sliding the third sliding block 410 to move the second insulating sleeve 400 and adjust the second electrode 300
  • the above-mentioned structure realizes the adjustment of the exposure depth of the first electrode 200 and the second electrode 300 in order to ensure the insulation between the first electrode 200 and the second electrode 300, and the second slider 320 and the third slider 410 After moving a certain distance along with the first sliding block 110, the position can be further adjusted, which reduces the time spent on the adjustment, improves the accuracy of the adjustment, and helps to reduce the operation time.
  • the first slider 110, the second slider 320, and the third slider 410 are slidably disposed at different positions on the handle 500, respectively. At this time, the movements of the first slider 110, the second slider 320 and the third slider 410 are not related to each other, and the sliding of the first slider 110, the second slider 320 or the third slider 410 can be adjusted respectively.
  • the handle 500 is provided with a third sliding groove 510 that is slidably engaged with the first sliding block 110, the second sliding block 320, and the third sliding block 410, and the third sliding groove
  • a first accommodating groove 520 is provided on the side wall of the 510, a first positioning member 112 extending into the first accommodating groove 520 is provided on the first slider 110, and the first accommodating groove 520 is arranged along the axial direction of the first electrode 200 ,
  • the side wall of the third chute 510 is also provided with at least two first limiting ports 530 at intervals.
  • the first limiting ports 530 are sequentially arranged along the axial direction of the first electrode 200, and the first limiting ports 530 are located in the first Above the accommodating groove 520 and the first limiting port 530 communicates with the first accommodating groove 520.
  • the first positioning member 112 may be located in the first receiving groove 520 or the first limiting opening 530.
  • the first sliding block 110 may move along the third sliding groove 510.
  • the first positioning member 112 enters the first limiting opening 530 from the first receiving groove 520, the first positioning member 112 is limited by the first limiting opening 530, so that the first sliding block 110 is in the third sliding groove 510
  • the position of is relatively fixed. Therefore, the first sliding block 110 is slid or fixed by the cooperation of the first positioning member 112 with the first receiving groove 520 or the first limiting opening 530, which facilitates the adjustment of the position of the first electrode 200.
  • one side opening of the first limiting port 530 is located on the outer surface of the handle 500. At this time, it can be directly observed that the first positioning member 112 is located in different first limit openings 530 to understand the adjustment situation of the first electrode 200.
  • the first slider 110 includes a first body portion 113 and a first pressing portion 114, the first body portion 113 is connected to the first pressing portion 114, and the first sliding groove 111 is provided at one end of the first body portion 113, the first pressing portion 114 is provided at the other end of the first body portion 113, and a first pressing port is provided between the first body portion 113 and the first pressing portion 114 ,
  • the first positioning member 112 is connected to the first pressing portion 114, and the first pressing portion 114 has a first state and a second state.
  • the first positioning member 112 In the first state, the first positioning member 112 is located in the first limiting port 530, In the second state, the first pressing portion 114 is pressed and bent in the direction of the first pressing opening, and the first positioning member 112 is located in the first receiving groove 520.
  • the first positioning member 112 connected to the first depression 114 can be located in the first receiving groove 520 by pressing the first depression 114, and the first positioning member 112 can slide along the first receiving groove 520, that is, the first positioning member 112 can slide along the first receiving groove 520.
  • a sliding block 110 can slide along the third sliding groove 510 to adjust the extension distance of the first electrode 200, and then relax the first pressing portion 114, so that the first positioning member 112 enters the first limiting opening 530.
  • a positioning member 112 is restricted by the first restriction opening 530, and the position of the first electrode 200 is fixed, which facilitates the insertion of the first electrode 200 into a predetermined position.
  • first sliding groove 111 and the second sliding groove 321 are both arranged along the axial direction of the first electrode 200.
  • a second accommodating groove 115 is provided on the inner wall of the first sliding groove 111, and a second positioning member extending into the second accommodating groove 115 is provided on the second sliding block 320 322.
  • the second accommodating groove 115 is arranged along the axial direction of the first electrode 200, and at least two second limiting openings 116 are spaced apart on the side wall of the first sliding groove 111, and different second limiting openings 116 are arranged along the first
  • An electrode 200 is arranged in order in the axial direction, the second limiting port 116 is located above the second receiving groove 115 and the second limiting port 116 is connected to the second receiving groove 115.
  • one side opening of the second limiting port 116 is located on the outer surface of the first sliding block 110.
  • the second slider 320 includes a second main body portion 323 and a second pressing portion 324.
  • the second main body portion 323 is connected to the second pressing portion 324, and the second sliding groove 321 And the second pressing portion 324 are respectively provided at both ends of the second body portion 323, and a second pressing port is provided between the second body portion 323 and the second pressing portion 324, the second positioning member 322 and the second The lower pressing portion 324 is connected.
  • the second lower pressing portion 324 has a third state and a fourth state. In the third state, the second positioning member 322 is located in the second limiting port 116. In the fourth state, the second lower The pressing portion 324 is pressed and bent in the direction of the second lower pressing port, and the second positioning member 322 is located in the second receiving groove 115.
  • the inner wall of the second sliding groove 321 is provided with a third receiving groove 325
  • the third sliding block 410 is provided with a third positioning member extending into the third receiving groove 325 411.
  • 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 spaced apart on the side wall of the second sliding groove 321, and different third limiting openings 326 are arranged along the first electrode 200.
  • An electrode 200 is arranged in order in the axial direction, the third limiting port 326 is located above the third receiving groove 325 and the third limiting port 326 is connected to the third receiving groove 325.
  • one side opening of the third limiting port 326 is located on the outer surface of the second sliding block 320.
  • the third slider 410 includes a third body portion 412 and a third pressing portion 413, the third body portion 412 is connected to the third pressing portion 413, and the third body portion 412 is connected to the third pressing portion 413.
  • a third pressing port is provided between the three pressing parts 413, and the third positioning member 411 is connected to 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 member 411 is located in the third limiting opening 326. In the sixth state, the third pressing portion 413 is pressed and bent in the direction of the third pressing opening, and the third positioning member 411 is located in the third receiving groove 325 .
  • the number of the second limit ports 116 is less than the number of the third limit ports 326, and the number of the second limit ports 116 is less than the number of the first limit ports 530. Since the sliding of the first sliding block 110 and the third sliding block 410 determines the exposure depth of the first electrode 200 and the second electrode 300, the number of the first limit opening 530 and the third limit opening 326 can be increased. The large adjustment range increases the applicability of the above-mentioned dual-electrode probe.
  • the first slider 110 further includes a first button 117
  • the first button 117 is provided outside the handle 500 and connected to the first depression 114
  • the second slider 320 also includes a second button 327.
  • the second button 327 is arranged outside the handle 500 and connected to the second pressing portion 324.
  • the third slider 410 further includes a third button 414.
  • the third button 414 is arranged outside the handle 500 and is connected to the third pressing portion 413. connection. At this time, it is convenient to press and push the sliding movement.
  • the first slider 110 includes a first sleeve 118 sleeved outside the first insulating sleeve 100
  • the second slider 320 includes a first sleeve sleeved outside the second electrode 300
  • the second set 328, the third sliding block 410 includes a third set 415 sleeved outside the second insulating sleeve 400, and the parts of the first set 118, the second set 328, and the third set 415 in the handle 500 are matched with the receiving cavity ,
  • the first set 118, the second set 328, and the third set 415 are arranged at intervals.
  • the first sliding block 110, the second sliding block 320, and the third sliding block 410 can respectively limit the first insulating sleeve 100, the second electrode 300, and the second insulating sleeve 400, and can ensure that they move in their respective diameters. Keep steady upwards.
  • first sleeve 118 is connected to the first main body portion 113
  • second sleeve 328 is connected to the second main body portion 323
  • third sleeve 415 is connected to the third main body portion 412.
  • the first sliding groove 111 is provided with at least two first bayonet openings 111a, and the first bayonet openings 111a are arranged at intervals along the length direction of the first sliding groove 111.
  • the second slider 320 is provided with an elastically deformable first elastic member 329a.
  • the first elastic member 329a has a first normal state and a first bending state.
  • the handle 500 is provided with an adjustable slot 540, the adjustable slot 540 is arranged along the length of the third sliding slot 510, and the side wall of the adjustable slot 540 is
  • the end of the third elastic member 119a is disposed in the adjustable groove 540.
  • the third elastic member 119a is separated from the third bayonet 541 and is located in the third sliding groove 510.
  • the end of the first elastic member 329a is provided with a first locking block 329b for locking into the first bayonet 111a; the end of the second elastic member 416 is provided with a first locking block 329b for locking into The second locking block 417 of the second bayonet 321a; the end of the third elastic member 119a is provided with a third locking block 119b for locking into the adjustable slot 540.
  • one end of the first slider 110 is provided with a V-shaped notch, and a third elastic member 119a is formed on both sides of the V-shaped notch, and one end of the second slider 320 is provided with a V-shaped notch.
  • a first elastic member 329a is formed on both sides of the V-shaped notch, one end of the third sliding block 410 is provided with a V-shaped notch, and both sides of the V-shaped notch are formed with a second elastic member 416.
  • the length of the first end 210 extending from the first insulating sleeve 100 is equal to the length of the third end 310 extending from the second insulating sleeve 400.
  • the exposure depths of the first electrode 200 and the second electrode 300 are equal.
  • the two-electrode probe further includes a first wire 610 and a second wire 620
  • the first electrode 200 is used to electrically connect to an external circuit through the first wire 610
  • the second electrode 300 is used to electrically connect to an external circuit through the second wiring 620
  • both the first wiring 610 and the second wiring 620 are provided with a spring-like structure. Since the relative positions of the first electrode 200 and the second electrode 300 need to be adjusted when adjusting the exposure depth of the first electrode 200 and the second electrode 300, the first wire 610 or the second wire 620 may be driven to move accordingly.
  • both the first wiring 610 and the second wiring 620 are provided with a spring-like structure, so that the first wiring 610 or the second wiring 620 can be stretched or compressed, and the joint of the first wiring 610 or the second wiring 620 will not be caused by movement. Damage occurred everywhere.
  • the first wiring 610 and the second wiring 620 are arranged in parallel.
  • the overall structure of the double-electrode probe is relatively compact, and its radial size can be reduced, which is more convenient for use.
  • the above-mentioned dual-electrode probe further includes a sliding tube 700.
  • the sliding tube 700 includes a first connecting portion 710 sleeved outside the second wire 620 and a second electrode 300 sleeved.
  • the outer second connecting portion 720, the first connecting portion 710 is connected to the second connecting portion 720, and the inner hole of the first connecting portion 710 is communicated with the inner hole of the second connecting portion 720. Since the second electrode 300 is sleeved outside the first electrode 200, the electrical connection between the second electrode 300 and the second wire 620 will be pulled when the second electrode 300 moves, so the sliding tube 700 can be used to connect the second electrode 300 and The connection of the second wiring 620 is protected.
  • An embodiment discloses an operating method using the above-mentioned double-electrode probe, which includes the following steps:
  • the first electrode 200 and the second electrode 300 are energized.
  • the above operation method is to extend the end of the first electrode 200 out of the first insulating sleeve 100, and then place the first electrode 200 and the second electrode 300 in a predetermined position and energize, between the first electrode 200 and the second electrode 300
  • the path is formed. Since the first electrode 200 or the first insulating sleeve 100 can be used to control the length of the first electrode 200 exposed to the first insulating sleeve 100, the exposure depth of the first electrode 200 can also be adjusted according to the actual situation to make the effect more effective. Good, at the same time the operation is simple, which can save operation time.
  • the above-mentioned 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 specifically includes the following steps:
  • the second electrode 300 and the first insulating sleeve 100 retreat, so that the end of the first electrode 200 extends out of the first insulating sleeve 100.
  • the exposure depth of the first electrode 200 can be adjusted only by ensuring that the first insulating sleeve 100 and the second electrode 300 are retracted, and the operation time can be reduced.
  • the first insulating sleeve 100 can also be kept stationary, and the first electrode 200 can be moved so that the end of the first electrode 200 protrudes from the first insulating sleeve 100.
  • the above effects can also be achieved.

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Abstract

一种双电极探针及其操作方法，双电极探针包括第一绝缘套(100)、第一电极(200)及第二电极(300)，第一绝缘套(100)套设于第一电极(200)外，第二电极(300)套设于第一绝缘套(100)外，第一电极(200)与第一绝缘套(100)滑动配合。由于第一电极(200)与第一绝缘套(100)滑动配合，则通过滑动第一电极(200)或第一绝缘套(100)，使第一电极(200)的端部伸出第一绝缘套(100)，此时可根据情况调整第一电极(200)的端部伸出第一绝缘套(100)的距离，即可调整第一电极(200)的暴露深度，由于第一电极(200)的暴露深度可影响上述双电极探针的作用范围及强度，因此可根据实际情况对第一电极(200)的暴露深度进行相应的调整，进而使上述双电极探针能够更好地对预定位置进行消融处理，则上述双电极探针的作用范围可调，操作简单，可节省手术时间。

Description

双电极探针及其操作方法 技术领域
本发明涉及医疗器械技术领域，特别是涉及一种双电极探针及其操作方法。
背景技术
陡脉冲手术通过向细胞输送低能电脉冲，造成细胞膜穿透，使其失衡，从而导致细胞凋亡。陡脉冲治疗仪器输送高压低能直流电(LEDC)以消融软组织，这种消融方法称为电穿法或不可逆电穿孔(IRE)。双电极探针是陡脉冲手术的关键之一，双电极探针的暴露面能够产生回波，置于超声下能够提高可视度，而双电极探针的暴露深度决定消融的高度或深度。当肿瘤病灶的软组织较大时，陡脉冲手术需要使用两根或多根单双电极探针，达到消融软组织的效果。但由于不同病灶存在差异，传统的探针无法根据实际情况进行相应的调整，会影响手术效果。
发明内容
基于此，本发明在于克服现有技术的缺陷，提供一种可调的双电极探针及其操作方法。
其技术方案如下：
一种双电极探针，包括第一绝缘套、第一电极及第二电极，所述第一绝缘套套设于所述第一电极外，所述第二电极套设于所述第一绝缘套外，所述第一电极与所述第一绝缘套滑动配合。
上述双电极探针，由于第一电极与第一绝缘套滑动配合，则通过滑动第一电极或第一绝缘套，使第一电极的端部伸出第一绝缘套，此时可根据情况调整第一电极的端部伸出第一绝缘套的距离，即可调整第一电极的暴露深度，由于第一电 极的暴露深度可影响上述双电极探针的作用范围及强度，因此可根据实际情况对第一电极的暴露深度进行相应的调整，进而使上述双电极探针能够更好地对预定位置进行消融处理，则上述双电极探针的作用范围可调，效果更好，操作简单，可节省手术时间。
在其中一个实施例中，所述第二电极与所述第一绝缘套滑动配合。
在其中一个实施例中，上述双电极探针还包括第二绝缘套，所述第二绝缘套套设于所述第二电极外，所述第二绝缘套与所述第二电极滑动配合。
在其中一个实施例中，所述第一电极的两端部分别为第一端部及第二端部，所述第二电极的两端部分别为第三端部及第四端部，所述第二端部、所述第四端部均用于与外部电路电性连接，在使用状态下，所述第二绝缘套的前端、所述第三端部、所述第一绝缘套的前端及所述第一端部依次伸出设置。
在其中一个实施例中，上述双电极探针还包括手柄，所述手柄内设有用于容纳所述第二绝缘套的容纳腔，所述第二绝缘套滑动穿设所述手柄。
在其中一个实施例中，所述第一绝缘套的后端上设有第一滑块，所述第四端部上设有第二滑块，所述第二绝缘套的后端上设有第三滑块，所述第一滑块、所述第二滑块与所述第三滑块穿设所述手柄并与所述手柄滑动配合，所述第二端部固设于所述容纳腔内。
在其中一个实施例中，所述第一端部伸出所述第一绝缘套的长度与所述第三端部伸出所述第二绝缘套的长度相等。
在其中一个实施例中，上述双电极探针还包括第一接线及第二接线，所述第一电极用于通过所述第一接线与外部电路电性连接，所述第二电极用于通过所述第二接线与外部电路电性连接，所述第一接线及所述第二接线上均设有弹簧状结构。
在其中一个实施例中，上述双电极探针还包括滑动管，所述滑动管包括套设 于所述第二接线外的第一接部及套设于所述第二电极外的第二接部，所述第一接部与所述第二接部连接，且所述第一接部的内孔与所述第二接部的内孔连通。
一种应用如上述双电极探针的操作方法，包括以下步骤：
移动所述第一电极或所述第一绝缘套，使所述第一电极的端部伸出所述第一绝缘套；
将所述第一电极及所述第二电极插入预定位置；
对所述第一电极及所述第二电极通电。
上述操作方法，通过将第一电极的端部伸出第一绝缘套，再将第一电极及第二电极均预定位置并通电，在第一电极与第二电极之间形成通路，由于可通过移动第一电极和/或第一绝缘套，控制第一电极露出第一绝缘套的长度，也就也可根据实际情况调整第一电极的暴露深度，使效果更好，同时操作简单，可节省手术时间。
附图说明
图1为本发明实施例所述的双电极探针的半剖图；
图2为图1中A处的放大示意图；
图3为本发明实施例所述的第一电极、第一绝缘套、第二电极及第二绝缘套装配后的侧视图；
图4为本发明实施例所述的双电极探针的斜视图；
图5为本发明实施例所述的双电极探针的爆炸示意图；
图6为本发明实施例所述的手柄、第一滑块、第二滑块及第三滑块的爆炸示意图；
图7为本发明实施例所述的手柄的半剖图；
图8为本发明实施例所述的第一滑块的半剖图；
图9为本发明实施例所述的第二滑块的半剖图；
图10为本发明另一个实施例所述的手柄、第一滑块、第二滑块及第三滑块的装配示意图；
图11为本发明另一个实施例所述的第一滑块、第二滑块及第三滑块的装配示意图；
图12为本发明另一个实施例所述的手柄、第一滑块、第二滑块及第三滑块的爆炸示意图。
附图标记说明：
100、第一绝缘套，110、第一滑块，111、第一滑槽，111a、第一卡口，112、第一定位件，113、第一主体部，114、第一下压部，115、第二容纳槽，116、第二限位口，117、第一按钮，118、第一套件，119a、第三弹性件，119b、第三卡块，200、第一电极，210、第一端部，300、第二电极，310、第三端部，320、第二滑块，321、第二滑槽，321a、第二卡口，322、第二定位件，323、第二主体部，324、第二下压部，325、第三容纳槽，326、第三限位口，327、第二按钮，328、第二套件，329a、第一弹性件，329b、第一卡块，400、第二绝缘套，410、第三滑块，411、第三定位件，412、第三主体部，413、第三下压部，414、第三按钮，415、第三套件，416、第二弹性件，417、第二卡块，500、手柄，510、第三滑槽，520、第一容纳槽，530、第一限位口，540、可调槽，541、第三卡口，610、第一接线，620、第二接线，700、滑动管，710、第一接部，720、第二接部。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发 明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明中所述“第一”、“第二”不代表具体的数量及顺序，仅仅是用于名称的区分。
本具体实施例中，“预定位置”为出现病变的区域，例如肿瘤病灶等。
如图1至图3所示，一实施例公开了一种双电极探针，包括第一绝缘套100、第一电极200及第二电极300，第一绝缘套100套设于第一电极200外，第二电极300套设于第一绝缘套100外，第一电极200与第一绝缘套100滑动配合。
上述双电极探针，由于第一电极200与第一绝缘套100滑动配合，则通过滑动第一电极200或第一绝缘套100，使第一电极200的端部伸出第一绝缘套100，此时可根据情况调整第一电极200的端部伸出第一绝缘套100的距离，即可调整第一电极200的暴露深度，由于第一电极200的暴露深度可影响上述双电极探针的作用范围及强度，因此可根据实际情况对第一电极200的暴露深度进行相应的调整，进而使上述双电极探针能够更好的对预定位置进行消融处理，则上述双电极探针的作用范围可调，效果更好，操作简单，可节省手术时间。
可选地，为使第一电极200的端部伸出第一绝缘套100，可使第一电极200固 定，第一绝缘套100回退；或使第一绝缘套100固定，第一电极200前进；或使第一电极200与第一绝缘套100向相同方向移动，但第一电极200的位移大于第一绝缘套100的位移。
可选地，在第一绝缘套100的轴向上，第一绝缘套100的端部与第二电极300的端部平齐；或第一绝缘套100的端部伸出第二电极300。此时第一绝缘套100可更好的起到绝缘的效果。
可选地，如图2所示，第一电极200上用于插入预定位置的一端为针尖结构。可方便将上述双电极探针插入预定位置。
在其中一个实施例中，第二电极300与第一绝缘套100滑动配合。由于第二电极300也可与第一绝缘套100滑动配合，可通过调整第一绝缘套100两侧第一电极200与第二电极300之间的位置，第一电极200与第二电极300插入预定位置并通电后，第一电极200与第二电极300导通形成电流，对预定位置进行消融，因此第一电极200与第二电极300的相对位置决定了电流流过的路径长短，也就决定了上述双电极探针作用范围的大小，则通过第二电极300相对第一绝缘套100滑动，也可调整上述双电极探针的作用范围，使上述双电极探针能够更精确的根据实际情况进行相应的调整，提升手术的效果。
在其他实施例中，也可将第二电极300与第一绝缘套100的相对位置进行固定。此时第二电极300的暴露深度一定，通过只调整第一电极200伸出第一绝缘套100的距离，对第一电极200的暴露深度进行控制，也可调整上述双电极探针的作用范围及强度。
在其中一个实施例中，如图1至图3所示，上述双电极探针还包括第二绝缘套400，第二绝缘套400套设于第二电极300外，第二绝缘套400与第二电极300滑动配合。此时通过控制第二电极300伸出第二绝缘套400的距离，可对第二电极300的暴露深度进行调整，使上述双电极探针能够更好的调整作用范围及强度， 提高手术的效果。
在其他实施例中，第二电极300外也可涂覆绝缘层，且第二电极300的端部可导电。此时第二电极300的暴露深度一定，但可通过调节第一电极200的暴露深度，对双电极探针进行调整。
在其中一个实施例中，如图2所示，第一电极200的两端部分别为第一端部210及第二端部，第二电极300的两端部分别为第三端部310及第四端部，第二端部、第四端部均用于与外部电路电性连接，在使用状态下，第二绝缘套400的前端、第三端部310、第一绝缘套100的前端及第一端部210依次伸出设置。通过移动，使第二绝缘套400的前端、第三端部310、第一绝缘套100的前端及第一端部210依次设置，则第一电极200与第二电极300不会出现短路等情况，同时利用第一绝缘套100对第一电极200的暴露深度进行调整，利用第二绝缘套400对第二电极300的暴露深度进行调整，调整的精度更高，使上述双电极探针更好的对预定位置进行处理，可提升效果。
具体地，上述“使用状态”，为上述双电极探针调整完成后待插入预定位置时的状态。
在其中一个实施例中，如图4所示，上述双电极探针还包括手柄500，手柄内设有用于容纳第二绝缘套的容纳腔，第二绝缘套400滑动穿设手柄500。此时第二绝缘套400、第二电极300、第一绝缘套100及第一电极200均部分位于手柄500内，手柄500方便了操作手术的人员的握持，同时手柄500可防止人员直接接触电极，安全性好。
可选地，手柄500为管状。可减少上述双电极探针的整体尺寸，方便使用。
在其中一个实施例中，如图5及图6所示，第一绝缘套100的后端上设有第一滑块110，第四端部上设有第二滑块320，第二绝缘套400的后端上设有第三滑块410，第一滑块110、第二滑块320与第三滑块410穿设手柄500并与手柄500 滑动配合，第二端部固设于容纳腔内。此时可通过滑动相应的第一滑块110、第二滑块320及第三滑块410，对第一电极200、第二电极300的暴露深度进行调整。此外，由于此时第一电极200不移动，因此可通过滑动第三滑块410使第一绝缘套100回退，进而使第一电极200的第一端部210伸出第一绝缘套100。
可选地，如图6所示，第一滑块110上设有第一滑槽111，第二滑块320与第一滑槽111滑动配合，第二滑块320上设有第二滑槽321，第三滑块410与第二滑槽321滑动配合。此时由于第三滑块410被限位于第二滑槽321内，第二滑块320被限位于第一滑槽111内，则第一滑块110移动时，可带动第二滑块320及第三滑块410与第一滑块110一起移动，使第一绝缘套100、第二电极300、第二绝缘套400一起移动，调整第一电极200的暴露深度，此时第二滑块320的可调距离为第二滑块320沿第一滑槽111滑动的距离，随后使第二滑块320移动可带动第三滑块410一起移动，使第二电极300与第二绝缘套400一起移动，此时第三滑块410的可调距离为第三滑块410沿第二滑槽321滑动的距离，最后滑动第三滑块410，使第二绝缘套400移动，调整第二电极300的暴露深度，上述结构实现依次调整第一电极200及第二电极300的暴露深度，保证了第一电极200与第二电极300之间的绝缘，且第二滑块320及第三滑块410在随着第一滑块110移动一定距离后，可进一步调整自身位置，减少了调整花费的时间，提高了调整的精确性，有利于减少手术时间。
在其他实施例中，第一滑块110、第二滑块320及第三滑块410分别滑动设于手柄500上的不同位置处。此时第一滑块110、第二滑块320与第三滑块410之间的运动互不相关，可分别调整第一滑块110、第二滑块320或第三滑块410的滑动。
可选地，如图5至图7所示，手柄500上设有与第一滑块110、第二滑块320及第三滑块410均滑动配合的第三滑槽510，第三滑槽510的侧壁上设有第一容纳槽520，第一滑块110上设有伸入第一容纳槽520内的第一定位件112，第一容纳 槽520沿第一电极200的轴向设置，第三滑槽510的侧壁上还间隔设有至少两个第一限位口530，第一限位口530沿第一电极200的轴向依次设置，第一限位口530位于第一容纳槽520的上方且第一限位口530与第一容纳槽520连通。第一定位件112可位于第一容纳槽520或第一限位口530内，当第一定位件112位于第一容纳槽520内时，第一滑块110可沿第三滑槽510移动，当第一定位件112由第一容纳槽520进入第一限位口530内时，第一定位件112被第一限位口530限位，使第一滑块110在第三滑槽510内的位置相对固定，因此通过第一定位件112与第一容纳槽520或第一限位口530的配合，使第一滑块110滑动或固定，方便对第一电极200的位置进行调整。
具体地，第一限位口530的一侧开口位于手柄500的外表面上。此时可直接观测到第一定位件112位于不同的第一限位口530内，了解第一电极200的调整情况。
可选地，如图6及图8所示，第一滑块110包括第一主体部113及第一下压部114，第一主体部113与第一下压部114连接，第一滑槽111设于第一主体部113的一端，第一下压部114设于第一主体部113的另一端，且第一主体部113与第一下压部114之间设有第一下压口，第一定位件112与第一下压部114连接，第一下压部114具有第一状态及第二状态，在第一状态下，第一定位件112位于第一限位口530内，在第二状态下，第一下压部114受按压并向第一下压口方向弯曲，第一定位件112位于第一容纳槽520内。可通过按压第一下压部114，使与第一下压部114连接的第一定位件112位于第一容纳槽520内，则第一定位件112可沿第一容纳槽520滑动，即第一滑块110可沿第三滑槽510滑动，调整第一电极200的伸出距离，再放松第一下压部114，使第一定位件112进入第一限位口530内，此时第一定位件112被第一限位口530限位，第一电极200的位置固定，可方便第一电极200插入预定位置。
可选地，第一滑槽111与第二滑槽321均沿第一电极200的轴向设置。
可选地，如图6及图8所示，第一滑槽111的内壁上设有第二容纳槽115，第二滑块320上设有伸入第二容纳槽115内的第二定位件322，第二容纳槽115沿第一电极200的轴向设置，第一滑槽111的侧壁上还间隔设有至少两个第二限位口116，不同的第二限位口116沿第一电极200的轴向依次设置，第二限位口116位于第二容纳槽115的上方且第二限位口116与第二容纳槽115连通。具体地，第二限位口116的一侧开口位于第一滑块110的外表面上。
具体地，如图6及图9所示，第二滑块320包括第二主体部323及第二下压部324，第二主体部323与第二下压部324连接，第二滑槽321与第二下压部324分别设于第二主体部323的两端，且第二主体部323与第二下压部324之间设有第二下压口，第二定位件322与第二下压部324连接，第二下压部324具有第三状态及第四状态，在第三状态下，第二定位件322位于第二限位口116内，在第四状态下，第二下压部324受按压并向第二下压口方向弯曲，第二定位件322位于第二容纳槽115内。
可选地，如图6及图9所示，第二滑槽321的内壁上设有第三容纳槽325，第三滑块410上设有伸入第三容纳槽325内的第三定位件411，第三容纳槽325沿第一电极200的轴向设置，第二滑槽321的侧壁上还间隔设有至少两个第三限位口326，不同的第三限位口326沿第一电极200的轴向依次设置，第三限位口326位于第三容纳槽325的上方且第三限位口326与第三容纳槽325连通。具体地，第三限位口326的一侧开口位于第二滑块320的外表面上。
具体地，如图6所示，第三滑块410包括第三主体部412及第三下压部413，第三主体部412与第三下压部413连接，且第三主体部412与第三下压部413之间设有第三下压口，第三定位件411与第三下压部413连接，第三下压部413具有第五状态及第六状态，在第五状态下，第三定位件411位于第三限位口326内， 在第六状态下，第三下压部413受按压并向第三下压口方向弯曲，第三定位件411位于第三容纳槽325内。
具体地，第二限位口116的数量小于第三限位口326的数量，第二限位口116的数量小于第一限位口530的数量。由于第一滑块110与第三滑块410的滑动决定了第一电极200及第二电极300的暴露深度，因此第一限位口530及第三限位口326的数量较多，可增大调整的范围，增加上述双电极探针的适用性。
具体地，如图6所示，第一滑块110还包括第一按钮117，第一按钮117设于手柄500外并与第一下压部114连接，第二滑块320还包括第二按钮327，第二按钮327设于手柄500外并与第二下压部324连接，第三滑块410还包括第三按钮414，第三按钮414设于手柄500外并与第三下压部413连接。此时可方便按压并推动滑动移动。
可选地，如图5及图6所示，第一滑块110包括套设于第一绝缘套100外的第一套件118，第二滑块320包括套设于第二电极300外的第二套件328，第三滑块410包括套设于第二绝缘套400外的第三套件415，第一套件118、第二套件328及第三套件415位于手柄500内的部分均与容纳腔匹配，第一套件118、第二套件328及第三套件415间隔设置。此时第一滑块110、第二滑块320及第三滑块410可分别对第一绝缘套100、第二电极300及第二绝缘套400进行限位，且可以保证移动时在各自径向上保持稳定。
具体地，第一套件118与第一主体部113连接，第二套件328与第二主体部323连接，第三套件415与第三主体部412连接。
在其他实施例中，如图10至图12所示，第一滑槽111上设有至少两个第一卡口111a，第一卡口111a沿第一滑槽111的长度方向间隔设置，第二滑块320上设有可弹性变形的第一弹性件329a，第一弹性件329a具有第一正常状态及第一弯曲状态，在第一正常状态下，第一弹性件329a的端部卡设于第一卡口111a内，在第 一弯曲状态下，第一弹性件329a脱离第一卡口111a并位于第一滑槽111内，第二滑槽321上设有至少两个第二卡口321a，第二卡口321a沿第二滑槽321的长度方向间隔设置，第三滑块410上设有可弹性变形的第二弹性件416，第二弹性件416具有第二正常状态及第二弯曲状态，在第二正常状态下，第二弹性件416的端部设于第二卡口321a内，在第二弯曲状态下，第二弹性件416脱离第二卡扣并位于第二滑槽321内，手柄500上设有可调槽540，可调槽540沿第三滑槽510的长度方向设置，可调槽540的侧壁上设有至少两个可调槽540，可调槽540沿可调槽540的长度方向间隔设置，第一滑块110上设有可弹性变形的第三弹性件119a，第三弹性件119a具有第三正常状态及第三弯曲状态，在第三正常状态下，第三弹性件119a的端部设于可调槽540内，在第三弯曲状态下，第三弹性件119a脱离第三卡口541并位于第三滑槽510内。上述结构中也可实现前一个滑块可相对后一个滑块移动，且后一个滑块移动时可同时带动前一个滑块移动，同时滑块每次可移动一确定的距离，方便调节。
具体地，如图10至图12所示，第一弹性件329a的端部设有用于卡入第一卡口111a的第一卡块329b；第二弹性件416的端部设有用于卡入第二卡口321a的第二卡块417；第三弹性件119a的端部设有用于卡入可调槽540的第三卡块119b。
具体地，如图10至图12所示，第一滑块110的一端设有V型缺口，且V型缺口的两侧形成第三弹性件119a，第二滑块320的一端设有V型缺口，且V型缺口的两侧形成第一弹性件329a，第三滑块410的一端设有V型缺口，且V型缺口的两侧形成第二弹性件416。
在其中一个实施例中，第一端部210伸出第一绝缘套100的长度与第三端部310伸出第二绝缘套400的长度相等。此时第一电极200及第二电极300的暴露深度相等，则当第一电极200与第二电极300之间形成通路的时候，电流强度较为稳定，使用的效果较好。
在其中一个实施例中，如图4及图5所示，上述双电极探针还包括第一接线610及第二接线620，第一电极200用于通过第一接线610与外部电路电性连接，第二电极300用于通过第二接线620与外部电路电性连接，第一接线610及第二接线620上均设有弹簧状结构。由于在调整第一电极200及第二电极300暴露深度的时候需要对第一电极200及第二电极300的相对位置进行调整，可能会带动第一接线610或第二接线620进行相应的移动，因此将第一接线610及第二接线620上均设置弹簧状结构，使第一接线610或第二接线620可拉伸或压缩，不会由于移动造成第一接线610或第二接线620的接头处发生损伤。
可选地，第一接线610及第二接线620并列设置。此时上述双电极探针的整体结构较为紧凑，可减少其径向尺寸，更利于使用。
在其中一个实施例中，如图5所示，上述双电极探针还包括滑动管700，滑动管700包括套设于第二接线620外的第一接部710及套设于第二电极300外的第二接部720，第一接部710与第二接部720连接，且第一接部710的内孔与第二接部720的内孔连通。由于第二电极300套设于第一电极200外，第二电极300与第二接线620电的连接处在第二电极300移动时会受到拉扯，因此可利用滑动管700对第二电极300与第二接线620的连接处进行保护。
一实施例公开了一种应用上述双电极探针的操作方法，包括以下步骤：
移动第一电极200或第一绝缘套100，使第一电极200的端部伸出第一绝缘套100；
将第一电极200及第二电极300插入预定位置；
对第一电极200及第二电极300通电。
上述操作方法，通过将第一电极200的端部伸出第一绝缘套100，再将第一电极200及第二电极300均预定位置并通电，在第一电极200与第二电极300之间形成通路，由于可通过第一电极200或第一绝缘套100，控制第一电极200露出第 一绝缘套100的长度，也就也可根据实际情况调整第一电极200的暴露深度，使效果更好，同时操作简单，可节省手术时间。
具体地，上述移动第一电极200或第一绝缘套100，使第一电极200的端部伸出第一绝缘套100，具体包括以下步骤：
保持第一电极200静止，第二电极300及第一绝缘套100回退，使第一电极200的端部伸出第一绝缘套100。
此时通过保持第一电极200静止，只需要保证第一绝缘套100及第二电极300回退就可调整第一电极200的暴露深度，可减少操作时间。
在其他实施例中，也可使第一绝缘套100保持静止，移动第一电极200使第一电极200的端部伸出第一绝缘套100。同样可实现上述效果。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种双电极探针，其特征在于，包括第一绝缘套、第一电极及第二电极，所述第一绝缘套套设于所述第一电极外，所述第二电极套设于所述第一绝缘套外，所述第一电极与所述第一绝缘套滑动配合。
  2. 根据权利要求1所述的双电极探针，其特征在于，所述第二电极与所述第一绝缘套滑动配合。
  3. 根据权利要求2所述的双电极探针，其特征在于，还包括第二绝缘套，所述第二绝缘套套设于所述第二电极外，所述第二绝缘套与所述第二电极滑动配合。
  4. 根据权利要求3所述的双电极探针，其特征在于，所述第一电极的两端部分别为第一端部及第二端部，所述第二电极的两端部分别为第三端部及第四端部，所述第二端部、所述第四端部均用于与外部电路电性连接，在使用状态下，所述第二绝缘套的前端、所述第三端部、所述第一绝缘套的前端及所述第一端部依次伸出设置。
  5. 根据权利要求4所述的双电极探针，其特征在于，还包括手柄，所述手柄内设有用于容纳所述第二绝缘套的容纳腔，所述第二绝缘套滑动穿设所述手柄。
  6. 根据权利要求5所述的双电极探针，其特征在于，所述第一绝缘套的后端上设有第一滑块，所述第四端部上设有第二滑块，所述第二绝缘套的后端上设有第三滑块，所述第一滑块、所述第二滑块与所述第三滑块穿设所述手柄并与所述手柄滑动配合，所述第二端部固设于所述容纳腔内。
  7. 根据权利要求4所述的双电极探针，其特征在于，所述第一端部伸出所述第一绝缘套的长度与所述第三端部伸出所述第二绝缘套的长度相等。
  8. 根据权利要求1-7任一项所述的双电极探针，其特征在于，还包括第一接线及第二接线，所述第一电极用于通过所述第一接线与外部电路电性连接，所述 第二电极用于通过所述第二接线与外部电路电性连接，所述第一接线及所述第二接线上均设有弹簧状结构。
  9. 根据权利要求8所述的双电极探针，其特征在于，还包括滑动管，所述滑动管包括套设于所述第二接线外的第一接部及套设于所述第二电极外的第二接部，所述第一接部与所述第二接部连接，且所述第一接部的内孔与所述第二接部的内孔连通。
  10. 一种应用如上述权利要求1-9任一项所述的双电极探针的操作方法，其特征在于，包括以下步骤：
    移动所述第一电极或所述第一绝缘套，使所述第一电极的端部伸出所述第一绝缘套；
    将所述第一电极及所述第二电极插入预定位置；
    对所述第一电极及所述第二电极通电。
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