CN103251452B - Double-electrode ablation electrode for tumor treatment - Google Patents
Double-electrode ablation electrode for tumor treatment Download PDFInfo
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- CN103251452B CN103251452B CN201310196927.2A CN201310196927A CN103251452B CN 103251452 B CN103251452 B CN 103251452B CN 201310196927 A CN201310196927 A CN 201310196927A CN 103251452 B CN103251452 B CN 103251452B
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Abstract
The invention provides a double-electrode ablation electrode for tumor treatment. The double-electrode ablation electrode for the tumor treatment comprises a center electrode, surrounding electrodes, a puncturing outer tube and a stretchy handle. The surrounding electrodes coat the outer side of the center electrode and the tail ends of the surrounding electrodes are respectively and partially connected with the center electrode. The puncturing outer tube is sleeved outside the center electrode and the surrounding electrodes and the tail end of the puncturing outer tube is connected with the stretchy handle. The stretchy handle controls the center electrode and the surrounding electrodes to move forwards. The tail end of the center electrode is arranged on the front end face of the puncturing outer tube in a reset state. The surrounding electrodes are composed of a plurality of inner layer electrodes and a plurality of outer layer electrodes. The inner layer electrodes and the outer layer electrodes are arranged in a staggered mode. The polarities of the adjacent center electrode and the surrounding electrodes are a positive polarity and negative polarities respectively. Due to the fact that the polarities are opposite, radio frequency oscillation is generated between adjacent electrodes, so that a tumor is removed. The double-electrode ablation electrode for the tumor treatment has the advantages of being high in heating speed, short in treatment time and capable of achieving the tumor treatment according to the principle that the radio frequency oscillation can be generated between the positive polar electrodes and the negative polar electrodes.
Description
Technical field
The present invention relates to a kind of ablating electrode, especially a kind of bipolar ablation electrode being used for the treatment of tumor.
Background technology
At present, domestic and international application radio-frequency ablation technique has treated the pernicious and benign tumors such as a large amount of hepatocarcinoma, pulmonary carcinoma, cancer of pancreas, prostate hyperplasia, and achieves satisfied curative effect.
Radio-frequency ablation electrode is divided into single needle type and spininess type two class by the number of electrode needle, the coagulation necrosis district that single needle type ablating electrode produces is avette, its minor axis diameter is about 3cm, and major axis then depends on the length of shank far-end current-carrying part (non-insulated part).The coagulation necrosis district of spininess ablating electrode mostly is spherical or oblate spheroid, and its maximum gauge is about 5cm.The coagulation necrosis district diameter produced due to spininess type ablating electrode is comparatively large, and shape is also more satisfactory, native land is inside and outside adopt spininess type ablating electrode to carry out treating more.
In existing spininess type ablating electrode, its electrode tip is generally monopolar electrode.Its shortcoming is: because the firing rate of monopolar electrode is slow, therefore, consume long, thus add the misery of patient in operation process to the treatment time of tumor.
Summary of the invention
For the weak point existed in the problems referred to above, the invention provides a kind of bipolar ablation electrode being used for the treatment of tumor, there is firing rate fast, the feature that treatment time is short, the misery of patient in operation process can be reduced, according to the principle that can produce strength between positive and negative polar electric pole, to realize the treatment to tumor.
For achieving the above object, the invention provides a kind of bipolar ablation electrode being used for the treatment of tumor, comprise central electrode, surround electrode, puncture outer tube and telescoping handle, described surround electrode is wrapped in the outside of described central electrode, its end is all be connected with electrode generating portion, described puncture outer tube sleeve is located at the outside of described central electrode and described surround electrode, its end is connected with described telescoping handle, described telescoping handle controls described central electrode and travels forward together with described surround electrode, the end of described central electrode is arranged on the front end face of described puncture outer tube in the reset state, described surround electrode is made up of multiple internal layer electrode and the multiple outer electrodes be arranged on outside it, and described internal layer electrode and described outer electrode are staggered arrangement, polarity between adjacent described central electrode and described surround electrode is respectively straight polarity electrode and negative-pole electrode, under the effect of positive and negative polar electric pole, makes to form strength between adjacent electrode to remove tumor.
Further, when described surround electrode is arranged on described puncture outer tube, described central electrode and described surround electrode are working electrode, and its polarity is contrary, described surround electrode by heat conduction on the tube wall of the described puncture outer tube be adjacent; When the described surround electrode of a part extends to outside described puncture outer tube, described central electrode and described surround electrode are working electrode, and its polarity is contrary, makes to form strength between described central electrode and described surround electrode to remove tumor; When whole described surround electrode extends to outside described puncture outer tube, multiple described internal layer electrode and multiple described outer electrode are working electrode, and its polarity is contrary, makes to form strength between described internal layer electrode and described outer electrode to remove tumor.
Further, the outer wall of described central electrode and described surround electrode is enclosed with electrode dielectric layer, described central electrode and described surround electrode are all that the electrode cable joint by being arranged on electrode bundle end is connected with outside positive and negative polarity generator.
Further, described central electrode is connected with positive contact sheet by the central electrode contact point being arranged on electrode bundle end, and described central electrode contact point and described positive contact sheet cooperatively interact to make described central electrode produce straight polarity electrode; Described outer electrode is connected with cathode contact sheet by the outer electrode contact point being arranged on electrode bundle end, described internal layer electrode is connected with cathode contact sheet by the first internal layer electrode contact point being arranged on electrode bundle end, described outer electrode contact point and described first internal layer electrode contact point cooperatively interact to make described outer electrode and described internal layer electrode produce negative-pole electrode, and the first internal layer electrode contact point is arranged on the front end of outer electrode contact point; Described internal layer electrode is also connected with the second internal layer electrode contact point being arranged on electrode bundle end, described second internal layer electrode contact point is also be connected with described positive contact sheet, and described second internal layer electrode contact point is arranged on the rear side of described central electrode contact point.
Further, described central electrode contact point and described second internal layer electrode contact point are all be slidably matched to form slide rail type structure with described positive contact sheet, and form described electrode generating portion; Described outer electrode contact point and described first internal layer electrode contact point are all slidably matched to form slide rail type structure with described cathode contact sheet, and form described electrode generating portion.
Further, described telescoping handle is made up of drawing handle and handle sleeve, and described handle sleeve is also provided with liquid injection hole 8, and the end of described liquid injection hole 8 is connected with described puncture outer tube, and liquid is exported along the gap between puncture outer tube and electrode.
Further, described positive contact sheet and described cathode contact sheet are arranged on the inwall of described handle sleeve, and described handle sleeve is also provided with the electrode cable joint be connected with described cathode contact sheet with described positive contact sheet respectively.
Further, described internal layer electrode is with described central electrode for the center of circle is distributed in outside it, and described outer electrode is with the outside of described central electrode described internal layer electrode for the center of circle is distributed in.
Compared with prior art, the present invention has the following advantages:
1, because middle electrocardio level and surround electrode can discharge straight polarity electrode and negative-pole electrode respectively, compared with existing monopolar type ablating electrode, the firing rate of electrode tip of the present invention within the unit interval is faster, its treatment time also lower than the time that monopolar type ablating electrode consumes, also thus decrease the misery of patient in operation process;
2, because middle electrocardio level and surround electrode can discharge straight polarity electrode and negative-pole electrode respectively, its polarity is contrary, therefore, according to the principle that can produce strength between positive and negative polar electric pole, to realize removing the object to tumor;
3, by telescoping handle control centre electricity level and the development length of surround electrode, middle electrocardio level and surround electrode is enable to enter tumor with length the most appropriate, to reach ideal therapeutic effect;
4, because the end of central electrode is arranged on the front end face of puncture outer tube in the reset state all the time, therefore, enter in tissue process in the present invention, can prevent tissue from entering its inside by the front end of the outer tube that punctures, make electrode enter inside tumor smoothly;
5, because surround electrode is that the center of circle is distributed in outside it with central electrode, therefore, positive and negative polar electric pole can be made to act on the inside of tumor uniformly.
Accompanying drawing explanation
Fig. 1 is the state diagram of first embodiment of the invention when entering inside of human body or being taken out by inside of human body;
Fig. 2 is that in Fig. 1, surround electrode extends to the sectional view outside puncture outer tube;
Fig. 3 is that in Fig. 1, surround electrode all extends to the sectional view outside puncture outer tube;
Fig. 4 is the state diagram of second embodiment of the invention when entering inside of human body or being taken out by inside of human body;
Fig. 5 is that in Fig. 4, surround electrode extends to the sectional view outside puncture outer tube;
Fig. 6 is that in Fig. 4, surround electrode all extends to the sectional view outside puncture outer tube;
Fig. 7 is the state diagram of third embodiment of the invention when entering inside of human body or being taken out by inside of human body;
Fig. 8 is that in Fig. 7, surround electrode extends to the sectional view outside puncture outer tube;
Fig. 9 is that in Fig. 7, surround electrode all extends to the sectional view outside puncture outer tube.
Main element symbol description is as follows:
1-drawing handle 2-handle sleeve 3-punctures outer tube
The outer electric level 6-internal layer electrode of 4-central electrode 5-
7-electrode dielectric layer 8-liquid injection hole 9-electrode bundle
10-electrode cable joint 11-positive contact sheet 12-central electrode contact point
13-cathode contact sheet 14-outer electrode contact point 15-first internal layer electrode contact point
16-second internal layer electrode contact point 17-anode electrode cable connector
18-negative electrode cable connector
Detailed description of the invention
Fig. 1 to Fig. 3 is respectively three kinds of using state figure of electrode in first embodiment of the invention.This bipolar ablation electrode being used for the treatment of tumor comprises central electrode 4, surround electrode, puncture outer tube and telescoping handle.Telescoping handle is made up of drawing handle 1 and handle sleeve 2, and drawing handle 1 can move forward and backward at handle sleeve 2, and the end of puncture outer tube is arranged on the inside of handle sleeve 2, and is coaxially set with drawing handle 1.Handle sleeve 2 is also provided with liquid injection hole 8, and the end of liquid injection hole 8 is connected with puncture outer tube, and liquid is exported along the gap between puncture outer tube and electrode.To liquid such as pathological tissues internal injection normal saline, chemotherapy liquid medicine, thus ablating electrode can be realized while pathological tissues is treated by liquid injection hole 8, fluid injection treatment can also be carried out to pathological tissues.
Puncture outer tube sleeve is located at the outside of central electrode and surround electrode, and surround electrode is wrapped in the outside of central electrode, and its end is all be connected with electrode generating portion.Surround electrode is made up of multiple internal layer electrode 6 and the multiple outer electrodes 5 be arranged on outside it, and internal layer electrode 6 and outer electrode 5 are in staggered arrangement.Internal layer electrode 6 is that the center of circle is distributed in outside it with central electrode, and outer electrode 5 take central electrode as the outside that the center of circle is distributed in internal layer electrode 6.Be be that the center of circle is distributed in outside it with central electrode due to surround electrode, therefore, positive and negative polar electric pole can be made to act on the inside of tumor uniformly.
The outer wall of central electrode and internal layer electrode 6 and outer electrode 5 is enclosed with electrode dielectric layer 7, and its end is all be connected with positive and negative polarity generator.In the present embodiment, internal layer electrode 6 is 4 with the quantity of outer electrode 5.Central electrode and internal layer electrode 6 and outer electrode 5 are all that the electrode cable joint 10 by being arranged on electrode bundle 9 end is connected with outside positive and negative polarity generator, are regulated the positive and negative electrode of central electrode and internal layer electrode 6 and outer electrode 5 by the positive and negative polarity generator of outside.
Telescoping handle control centre electrode travels forward together with surround electrode, and the end of central electrode is arranged on the front end face of puncture outer tube in the reset state.Because the end of central electrode is arranged on the front end face of puncture outer tube in the reset state all the time, therefore, enter in tissue process in the present invention, can prevent tissue from entering its inside by the front end of the outer tube that punctures, make electrode enter inside tumor smoothly.
By the development length of telescoping handle control centre electricity level 4 with surround electrode, middle electrocardio level 4 is enable to enter tumor with length the most appropriate, to reach ideal therapeutic effect with surround electrode.
Adjacent central electrode is contrary with the polarity between surround electrode, makes to form strength between adjacent electrode to remove tumor.
Fig. 1 is the present embodiment is after electrode penetrates human body when not working, and to the state diagram of tumor locus movement, and take out in being organized by people by electrode, electrode is in the structure chart of electriferous state.
As shown in Figure 1, when the present embodiment to penetrate in human body and to move to tumor locus, outer electrode 5 and internal layer electrode 6 are all be arranged on puncture outer tube, and central electrode and outer electrode 5 and internal layer electrode 6 are all be in uncharged state.After electrode enters tumor or other pathological tissues, then regulate each electrode with corresponding polarity, if setting central electrode is straight polarity electrode, so, outer electrode and internal layer electrode are then negative-pole electrode.In addition, treating complete to tumor or other pathological tissues, and when needing ablating electrode to take out, because ablating electrode can cause damage to organization internal when entering inside of human body and organizing, in order to can also treat the tissue damaged when ablating electrode takes out, to prevent it hemorrhage, therefore, set central electrode and outer electrode 5 and internal layer electrode 6 and be in charged state all the time.Because outer electrode 5 and internal layer electrode 6 are arranged on the inside of puncture outer tube, therefore, when ablating electrode is at the uniform velocity extracted external from tumor site work is complete, electric current is guided the tube wall place of the puncture outer tube close with it by outer electrode 5 and internal layer electrode 6, make to heat damaging tissue with the central electrode with heat with the tube wall of the puncture outer tube of heat and central electrode 4, the microvascular that ablating electrode is produced at piercing process closes, to prevent flow of tissue blood.
As shown in Figure 2, when telescoping handle control a part of outer electrode 5 and internal layer electrode 6 extend to outside puncture outer tube time, central electrode and outer electrode 5 and internal layer electrode 6 are working electrode.Learn according to foregoing, now, outer electrode 5 and internal layer electrode 6 be negative-pole electrode, and central electrode is straight polarity electrode.Because outer electrode 5 and internal layer electrode 6 have extended to the outside of puncture outer tube, therefore, outer electrode 5 and internal layer electrode 6 can launch negative-pole electrode laterally.Because middle electrocardio level 4 can discharge straight polarity electrode and negative-pole electrode respectively with outer electrode 5 and internal layer electrode 6, its polarity is contrary, therefore, according to the principle that can produce strength between positive and negative polar electric pole, to realize removing the object to tumor.
As shown in Figure 3, when outer electrode 5 and internal layer electrode 6 all extend to outside puncture outer tube, regulate positive and negative polarity generator that central electrode is quit work, not charged, can be straight polarity electrode or negative-pole electrode by the polarity set of internal layer electrode 6, be straight polarity electrode or negative-pole electrode by the polarity set of outer electrode 5, the result that base finally regulates is that internal layer electrode 6 is contrary with the polarity of outer electrode 5.Because outer electrode 5 and internal layer electrode 6 can discharge straight polarity electrode and negative-pole electrode respectively, its polarity is contrary, therefore, according to the principle that can produce strength between positive and negative polar electric pole, to realize removing the object to tumor.
Because middle electrocardio level 4 can discharge straight polarity electrode and negative-pole electrode respectively with surround electrode, compared with existing monopolar type ablating electrode, the firing rate of electrode tip of the present invention within the unit interval is faster, its treatment time also lower than the time that monopolar type ablating electrode consumes, also thus decrease the misery of patient in operation process.
Three kinds of using state figure of electrode in Fig. 4 to Fig. 6 second embodiment of the invention.This bipolar ablation electrode being used for the treatment of tumor comprises central electrode 1, surround electrode, puncture outer tube 3 and telescoping handle.Telescoping handle is made up of drawing handle 1 and handle sleeve 2, and drawing handle 1 can move forward and backward at handle sleeve 2, and the end of puncture outer tube 3 is arranged on the inside of handle sleeve 2, and is coaxially set with drawing handle 1.Handle sleeve 2 is also provided with liquid injection hole 8, and the end of liquid injection hole 8 is connected with puncture outer tube, and liquid is exported along the gap between puncture outer tube and electrode.To liquid such as pathological tissues internal injection normal saline or chemotherapy liquid medicine, thus ablating electrode can be realized while pathological tissues is treated by liquid injection hole 8, fluid injection treatment can also be carried out to pathological tissues.
Puncture outer tube 3 is set in the outside of central electrode and surround electrode, and surround electrode is wrapped in the outside of central electrode, and its end is all be connected with electrode generating portion.Surround electrode is made up of multiple internal layer electrode 6 and the multiple outer electrodes 5 be arranged on outside it, and internal layer electrode 6 and outer electrode 5 are in staggered arrangement.Internal layer electrode is that the center of circle is distributed in outside it with central electrode, and outer electrode take central electrode as the outside that the center of circle is distributed in internal layer electrode.Be be that the center of circle is distributed in outside it with central electrode due to surround electrode, therefore, positive and negative polar electric pole can be made to act on the inside of tumor uniformly.
The outer wall of central electrode 4 and internal layer electrode 6 and outer electrode 5 is enclosed with electrode dielectric layer 7, and its end is all be connected with positive and negative polarity generator.In the present embodiment, the quantity of internal layer electrode and outer electrode is 4.
The inwall of handle sleeve 2 is provided with positive contact sheet 11 and cathode contact sheet 13, handle sleeve 2 is also provided with the electrode cable joint 10 be connected with cathode contact sheet 13 with positive contact sheet 11 respectively.
Central electrode 4 is connected with positive contact sheet 11 by the central electrode contact point 12 being arranged on electrode bundle 9 end, and central electrode contact point 12 and positive contact sheet 11 cooperatively interact to make central electrode produce straight polarity electrode.
Outer electrode 5 is connected with cathode contact sheet 13 by the outer electrode contact point 14 being arranged on electrode bundle 9 end, internal layer electrode 6 is connected with cathode contact sheet 13 by the first internal layer electrode contact point 15 being arranged on electrode bundle 9 end, outer electrode contact point 14 and the first internal layer electrode contact point 15 cooperatively interact to make outer electrode and internal layer electrode produce negative-pole electrode, wherein, first internal layer electrode contact point 15 is arranged on the front end of outer electrode contact point 14, and, length between outer electrode contact point 14 two ends is being greater than the length of the first internal layer electrode contact point 15, first internal layer electrode contact point 15 is corresponding in longitudinally vertical mode with the position of central electrode contact point 12, and length is identical.
In addition, internal layer electrode 6 is also connected with the second internal layer electrode contact point 16 being arranged on electrode bundle 9 end, second internal layer electrode contact point 16 is advancing in handle displacement process forward, also realize and being connected of positive contact sheet 11, the spacing between the second internal layer electrode contact point 16 and central electrode contact point 12 is identical with the length of positive contact sheet 11.
Central electrode contact point 12 and the second internal layer electrode contact point 16 are all be slidably matched to form slide rail type structure with positive contact sheet, and form electrode generating portion.Outer electrode contact point 14 and the first internal layer electrode contact point 15 are all slidably matched to form slide rail type structure with cathode contact sheet, and form electrode generating portion.
Telescoping handle control centre electrode travels forward together with surround electrode, and the end of central electrode is arranged on the front end face of puncture outer tube in the reset state.Because the end of central electrode is arranged on the front end face of puncture outer tube in the reset state all the time, therefore, enter in tissue process in the present invention, can prevent tissue from entering its inside by the front end of the outer tube that punctures, make electrode enter inside tumor smoothly.
By the development length of telescoping handle control centre electricity level 4 with surround electrode, middle electrocardio level 4 is enable to enter tumor with length the most appropriate, to reach ideal therapeutic effect with surround electrode.
Adjacent central electrode is contrary with the polarity between surround electrode, makes to form strength between adjacent electrode to remove tumor.
Fig. 4 is the present embodiment is after electrode penetrates human body when not working, and to the state diagram of tumor locus movement, and take out in being organized by people by electrode, electrode is in the structure chart of electriferous state.
As shown in Figure 4, when the present embodiment to penetrate in human body and to move to tumor locus, outer electrode 5 and internal layer electrode 6 are all be arranged on puncture outer tube, and central electrode and outer electrode 5 and internal layer electrode 6 are all be in uncharged state.After electrode enters tumor or other pathological tissues, then regulate each electrode with corresponding polarity, if setting central electrode is straight polarity electrode, so, outer electrode and internal layer electrode are then negative-pole electrode.In addition, treating complete to tumor or other pathological tissues, and when needing ablating electrode to take out, because ablating electrode can cause damage to organization internal when entering inside of human body and organizing, in order to can also treat the tissue damaged when ablating electrode takes out, to prevent it hemorrhage, therefore, set central electrode and outer electrode 5 and internal layer electrode 6 and be in charged state all the time.Because outer electrode 5 and internal layer electrode 6 are arranged on the inside of puncture outer tube, therefore, when ablating electrode is at the uniform velocity extracted external from tumor site work is complete, electric current is guided the tube wall place of the puncture outer tube close with it by outer electrode 5 and internal layer electrode 6, make to heat damaging tissue with the central electrode with heat with the tube wall of the puncture outer tube of heat and central electrode 4, the microvascular that ablating electrode is produced at piercing process closes, to prevent flow of tissue blood.
As shown in Figure 5, when telescoping handle control a part of outer electrode and internal layer electrode extend to outside puncture outer tube time, central electrode and outer electrode and internal layer electrode are working electrode.Learn according to foregoing, now, outer electrode and internal layer electrode be negative-pole electrode, and central electrode is straight polarity electrode.Because outer electrode and internal layer electrode have extended to the outside of puncture outer tube, therefore, outer electrode and internal layer electrode can launch negative-pole electrode laterally.Because middle electrocardio level 4 can discharge straight polarity electrode and negative-pole electrode respectively with outer electrode and internal layer electrode, its polarity is contrary, therefore, according to the principle that can produce strength between positive and negative polar electric pole, to realize removing the object to tumor.
As shown in Figure 6, when outer electrode and internal layer electrode all extend to outside puncture outer tube, central electrode contact point 12 departs from positive contact sheet 11 and forms uncharged state, thus quits work.Now, because the first internal layer electrode contact point 15 is corresponding in longitudinally vertical mode with the position of central electrode contact point 12, therefore, when first internal layer electrode contact point 15 departs from cathode contact sheet 13, central electrode contact point 12 also departs from positive contact sheet 11 simultaneously, and the portion of outer electrode contact point 14 still still contacts with cathode contact sheet 13, therefore, outer electrode still can discharge negative-pole electrode.Because the rear side at central electrode contact point 12 is also provided with the second internal layer electrode contact point 16, therefore, when central electrode contact point 12 departs from positive contact sheet 11, the second internal layer electrode contact point 16 on rear side of it just when stretching in handle anterior displacement positive contact sheet 11 contact, thus make internal layer electrode discharge straight polarity electrode.Because outer electrode and internal layer electrode can discharge straight polarity electrode and negative-pole electrode respectively, its polarity is contrary, therefore, according to the principle that can produce strength between positive and negative polar electric pole, to realize removing the object to tumor.
Fig. 7 to Fig. 9 is respectively three kinds of using state figure of electrode in third embodiment of the invention.3rd embodiment is substantially identical with working method with the structure of the second embodiment, and therefore, identical description content is not generally repeated.
The difference of the 3rd embodiment and the second embodiment is only, handle sleeve 2 is provided with the positive level electrode cable joint 17 be connected with positive contact sheet 11, and the negative level electrode cable joint 18 be connected with cathode contact sheet 13.By said structure, can avoid in the second embodiment, because positive contact sheet and cathode contact sheet are all be connected with an electrode cable joint 10 to cause circuit chaotic.
Only as described above, be only preferred embodiment of the present invention, is such as familiar with on the professional people of this skill, and after understanding technological means of the present invention, natural energy, according to actual needs, is changed under the teachings of the present invention.Therefore all equal changes of doing according to the present patent application the scope of the claims and modification, once should still remain within the scope of the patent.
Claims (8)
1. one kind is used for the treatment of the bipolar ablation electrode of tumor, comprise central electrode, surround electrode, puncture outer tube and telescoping handle, described surround electrode is wrapped in the outside of described central electrode, its end is all be connected with electrode generating portion, described puncture outer tube sleeve is located at the outside of described central electrode and described surround electrode, its end is connected with described telescoping handle, described telescoping handle controls described central electrode and travels forward together with described surround electrode, and the end of described central electrode is arranged on the front end face of described puncture outer tube in the reset state;
Described surround electrode is made up of multiple internal layer electrode and the multiple outer electrodes be arranged on outside it, and described internal layer electrode and described outer electrode are staggered arrangement;
Polarity between adjacent described central electrode and described surround electrode is respectively straight polarity electrode and negative-pole electrode, under the effect of positive and negative polar electric pole, makes to form strength between adjacent electrode to remove tumor.
2. the bipolar ablation electrode being used for the treatment of tumor according to claim 1, it is characterized in that, when described surround electrode is arranged on described puncture outer tube, described central electrode and described surround electrode are working electrode, its polarity is contrary, described surround electrode by heat conduction on the tube wall of the described puncture outer tube be adjacent;
When the described surround electrode of a part extends to outside described puncture outer tube, described central electrode and described surround electrode are working electrode, and its polarity is contrary, makes to form strength between described central electrode and described surround electrode to remove tumor;
When whole described surround electrode extends to outside described puncture outer tube, multiple described internal layer electrode and multiple described outer electrode are working electrode, and its polarity is contrary, makes to form strength between described internal layer electrode and described outer electrode to remove tumor.
3. the bipolar ablation electrode being used for the treatment of tumor according to claim 2, it is characterized in that, the outer wall of described central electrode and described surround electrode is enclosed with electrode dielectric layer, and described central electrode and described surround electrode are all that the electrode cable joint by being arranged on electrode bundle end is connected with outside positive and negative polarity generator.
4. the bipolar ablation electrode being used for the treatment of tumor according to claim 3, it is characterized in that, described central electrode is connected with positive contact sheet by the central electrode contact point being arranged on electrode bundle end, and described central electrode contact point and described positive contact sheet cooperatively interact to make described central electrode produce straight polarity electrode;
Described outer electrode is connected with cathode contact sheet by the outer electrode contact point being arranged on electrode bundle end, described internal layer electrode is connected with cathode contact sheet by the first internal layer electrode contact point being arranged on electrode bundle end, described outer electrode contact point and described first internal layer electrode contact point cooperatively interact to make described outer electrode and described internal layer electrode produce negative-pole electrode, and the first internal layer electrode contact point is arranged on the front end of outer electrode contact point;
Described internal layer electrode is also connected with the second internal layer electrode contact point being arranged on electrode bundle end, described second internal layer electrode contact point is also be connected with described positive contact sheet, and described second internal layer electrode contact point is arranged on the rear side of described central electrode contact point.
5. the bipolar ablation electrode being used for the treatment of tumor according to claim 4, it is characterized in that, described central electrode contact point and described second internal layer electrode contact point are all be slidably matched to form slide rail type structure with described positive contact sheet, and form described electrode generating portion;
Described outer electrode contact point and described first internal layer electrode contact point are all slidably matched to form slide rail type structure with described cathode contact sheet, and form described electrode generating portion.
6. according to the described bipolar ablation electrode being used for the treatment of tumor arbitrary in claim 1 to 5, it is characterized in that, described telescoping handle is made up of drawing handle and handle sleeve, described handle sleeve is also provided with liquid injection hole 8, the end of described liquid injection hole 8 is connected with described puncture outer tube, and liquid is exported along the gap between puncture outer tube and electrode.
7. the bipolar ablation electrode being used for the treatment of tumor according to claim 6, it is characterized in that, described positive contact sheet and described cathode contact sheet are arranged on the inwall of described handle sleeve, and described handle sleeve is also provided with the electrode cable joint be connected with described cathode contact sheet with described positive contact sheet respectively.
8. the bipolar ablation electrode being used for the treatment of tumor according to claim 7, it is characterized in that, described internal layer electrode is with described central electrode for the center of circle is distributed in outside it, and described outer electrode is with the outside of described central electrode described internal layer electrode for the center of circle is distributed in.
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| CN103610497B (en) * | 2013-12-03 | 2015-11-25 | 张家兴 | Tumor tissues melts and subtracts appearance system |
| CN110151301A (en) * | 2019-05-18 | 2019-08-23 | 杭州睿笛生物科技有限公司 | A kind of electric pulse ablatograph for endoscope |
| CN110890795B (en) * | 2019-10-14 | 2021-08-27 | 宴晶科技(北京)有限公司 | Tumor thermal ablation device based on non-contact power supply |
| CN115844520A (en) * | 2021-08-20 | 2023-03-28 | 四川锦江电子医疗器械科技股份有限公司 | Local pulse electric field ablation electrode catheter |
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| CN103251452A (en) | 2013-08-21 |
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Effective date of registration: 20211104 Address after: 213161 201, floor 2, plant 8, Changzhou Innovation Park, Israel, China, No. 18-67, middle Changwu Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou weimaikang Medical Instrument Co.,Ltd. Address before: Room 202, unit 6, building 10, blues international, No. 88, sanluju Road, Fengtai District, Beijing 100073 Patentee before: Chang Chengzhong Patentee before: Ni Feiyu |