CN103251452A - Double-electrode ablation electrode for tumor treatment - Google Patents
Double-electrode ablation electrode for tumor treatment Download PDFInfo
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- CN103251452A CN103251452A CN2013101969272A CN201310196927A CN103251452A CN 103251452 A CN103251452 A CN 103251452A CN 2013101969272 A CN2013101969272 A CN 2013101969272A CN 201310196927 A CN201310196927 A CN 201310196927A CN 103251452 A CN103251452 A CN 103251452A
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- 206010028980 Neoplasm Diseases 0.000 title claims abstract description 55
- 238000002679 ablation Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 210000001519 tissue Anatomy 0.000 description 24
- 238000000034 method Methods 0.000 description 12
- 230000001575 pathological effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 206010028851 Necrosis Diseases 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 208000032843 Hemorrhage Diseases 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
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- 238000002512 chemotherapy Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- 210000004088 microvessel Anatomy 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000007674 radiofrequency ablation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 206010061902 Pancreatic neoplasm Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 208000015486 malignant pancreatic neoplasm Diseases 0.000 description 1
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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 that is used for the treatment of tumor.
Background technology
At present, the domestic and international application radio-frequency ablation technique has been treated pernicious and benign tumors such as a large amount of hepatocarcinoma, pulmonary carcinoma, cancer of pancreas, prostate hyperplasia, and has obtained satisfied curative effect.
How many radio-frequency ablation electrodes is divided into single needle type and spininess type two classes by electrode needle, and the coagulation necrosis district that single needle type ablating electrode produces is avette, and its minor axis diameter is about 3cm, and major axis then depends on the length of shank far-end current-carrying part (not insulated part).The coagulation necrosis district of spininess ablating electrode mostly is sphere or oblate spheroid, and its maximum gauge is about 5cm.Because the coagulation necrosis district diameter that spininess type ablating electrode produces is bigger, shape is also more satisfactory, and it is more that the inside and outside employing in native land spininess type ablating electrode is treated.
In existing spininess type ablating electrode, its electrode tip is generally the unipolarity electrode.Its shortcoming is: because the firing rate of unipolarity electrode is slow, therefore long to the tumor treatment time loss, thereby increased the misery of patient in operation process.
Summary of the invention
At the weak point that exists in the problems referred to above, the invention provides a kind of bipolar ablation electrode that is used for the treatment of tumor, it is fast to have firing rate, the characteristics that treatment time is short, can reduce the misery of patient in operation process, according to producing the principle of strength between the positive and negative polarity electrode, to realize tumor treatment.
For achieving the above object, the invention provides a kind of bipolar ablation electrode that is 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 all is with electrode part to take place to be connected, 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 described surround electrode travels forward together, and the end of described central electrode is arranged on the front end face of described puncture outer tube under reset mode; Described surround electrode is made of a plurality of internal layer electrodes and a plurality of outer electrodes of being arranged on its outside, and described internal layer electrode and described outer electrode are the mode of interlocking and arrange; Adjacent described central electrode and the polarity between the described surround electrode are respectively straight polarity electrode and negative polarity electrode, under the effect of positive and negative polarity electrode, make to form strength between the adjacent electrode to remove tumor.
Further, when described surround electrode was arranged on described puncture outer tube inside, described central electrode and described surround electrode were working electrode, and its polarity is opposite, and described surround electrode conducts to heat on the tube wall of the described puncture outer tube that is adjacent; When the described surround electrode of a part extended to the described puncture outer tube outside, described central electrode and described surround electrode were working electrode, and its polarity is opposite, made to form strength between described central electrode and the described surround electrode to remove tumor; When whole described surround electrodes extended to the described puncture outer tube outside, a plurality of described internal layer electrodes and a plurality of described outer electrode were working electrode, and its polarity is opposite, made to form strength between described internal layer electrode and the described outer electrode to remove tumor.
Further, be enclosed with electrode dielectric layer at the outer wall of described central electrode and described surround electrode, described central electrode and described surround electrode all are that the electrode cable joint by being arranged on the electrode bundle end is connected with outside positive and negative polarity generator.
Further, described central electrode is connected with anodal contact chip by the central electrode contact point that is arranged on the electrode bundle end, and described central electrode contact point and described anodal contact chip cooperatively interact so that described central electrode produces straight polarity electrode; Described outer electrode is connected with the negative pole contact chip by the outer electrode contact point that is arranged on the electrode bundle end, described internal layer electrode is connected with the negative pole contact chip by the first internal layer electrode contact point that is arranged on the electrode bundle end, described outer electrode contact point and the described first internal layer electrode contact point cooperatively interact so that described outer electrode and described internal layer electrode produce the negative polarity electrode, and the first internal layer electrode contact point is arranged on the front end of outer electrode contact point; Described internal layer electrode also is connected with the second internal layer electrode contact point that is arranged on the electrode bundle end, the described second internal layer electrode contact point also is to be connected with described anodal contact chip, and the 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 the described second internal layer electrode contact point all are to be slidingly matched to form the slide rail type structure with described anelectrode contact chip, and constitute described electrode generation part; Described outer electrode contact point and the described first internal layer electrode contact point all are slidingly matched to form the slide rail type structure with described negative electrode contact chip, and constitute described electrode generation part.
Further, described telescoping handle is made of drawing handle and handle sleeve, also is provided with liquid injection hole 8 on described handle sleeve, and the end of described liquid injection hole 8 is connected with described puncture outer tube, makes liquid along the slit output between puncture outer tube and the electrode.
Further, described anelectrode contact chip and described negative electrode contact chip are installed on the inwall of described handle sleeve, also are provided with respectively the electrode cable joint that is connected with described negative electrode contact chip with described anelectrode contact chip on described handle sleeve.
Further, described internal layer electrode is that the center of circle is distributed in its outside with described central electrode, and described outer electrode is the outside that the center of circle is distributed in described internal layer electrode with described central electrode.
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 polarity electrode respectively, compare with existing monopolar type ablating electrode, the firing rate of electrode tip of the present invention in the unit interval is faster, its treatment time also is lower than the time that the monopolar type ablating electrode consumes, thereby has also reduced the misery of patient in operation process;
2, because middle electrocardio level and surround electrode can discharge straight polarity electrode and negative polarity electrode respectively, and its polarity is opposite, therefore, according to producing the principle of strength between the positive and negative polarity electrode, to realize removing the purpose to tumor;
3, by the development length of telescoping handle control centre electricity level with surround electrode, electrocardio level and surround electrode can enter tumor with the most appropriate length in making, to reach ideal therapeutic effect;
4, because the end of central electrode is arranged under reset mode on the front end face of puncture outer tube all the time, therefore, enter in the tissue process in the present invention, can prevent that tissue from entering its inside by the front end of puncture outer tube, makes electrode enter inside tumor smoothly;
5, because surround electrode is to be that the center of circle is distributed in its outside with the central electrode, therefore, can make positive and negative polarity electrode act on the inside of tumor uniformly.
Description of drawings
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 extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 1;
Fig. 3 all extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 1;
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 extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 4;
Fig. 6 all extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 4;
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 extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 7;
Fig. 9 all extends to the cutaway view in the puncture outer tube outside for surround electrode among Fig. 7.
The main element symbol description is as follows:
The 1-drawing handle 2-handle sleeve 3-outer tube that punctures
The outer electricity level of 4-central electrode 5-6-internal layer electrode
7-electrode dielectric layer 8-liquid injection hole 9-electrode bundle
The anodal contact chip 12-of 10-electrode cable joint 11-central electrode contact point
The 13-negative pole contact chip 14-outer electrode contact point 15-first internal layer electrode contact point
The 16-second internal layer electrode contact point 17-anode electrode cable connector
18-negative electrode cable connector
The specific embodiment
Fig. 1 to Fig. 3 is respectively three kinds of user mode figure of electrode in the first embodiment of the invention.This bipolar ablation electrode that is used for the treatment of tumor comprises central electrode 4, surround electrode, puncture outer tube and telescoping handle.Telescoping handle is made of drawing handle 1 and handle sleeve 2, and drawing handle 1 can carry out the front and back displacement 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.Also be provided with liquid injection hole 8 on handle sleeve 2, the end of liquid injection hole 8 is connected with the puncture outer tube, makes liquid along the slit output between puncture outer tube and the electrode.Can be to liquid such as the inner injecting normal saline of pathological tissues, chemotherapy liquid medicine by liquid injection hole 8, thus realize ablating electrode in to the pathological tissues treatment, can also carry out the fluid injection treatment to pathological tissues.
The 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 all is with electrode part to take place to be connected.Surround electrode is made of a plurality of internal layer electrodes 6 and a plurality of outer electrodes 5 of being arranged on its outside, and internal layer electrode 6 is staggered mode with outer electrode 5 and arranges.Internal layer electrode 6 is that the center of circle is distributed in its outside with the central electrode, and outer electrode 5 is the outside that the center of circle is distributed in internal layer electrode 6 with the central electrode.Because surround electrode is to be that the center of circle is distributed in its outside with the central electrode, therefore, can make positive and negative polarity electrode act on the inside of tumor uniformly.
Outer wall at central electrode and internal layer electrode 6 and outer electrode 5 is enclosed with electrode dielectric layer 7, and its end all is to 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 all is to be connected with the positive and negative polarity generator of outside by the electrode cable joint 10 that is arranged on electrode bundle 9 ends with internal layer electrode 6 and outer electrode 5, regulates 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 and surround electrode travel forward together, and the end of central electrode is arranged under reset mode on the front end face of puncture outer tube.Because the end of central electrode is arranged on the front end face of puncture outer tube all the time, therefore, enters in the tissue process in the present invention, can prevent that tissue from entering its inside by the front end of puncture outer tube, makes electrode enter inside tumor smoothly under reset mode.
By the development length of telescoping handle control centre electricity level 4 with surround electrode, electrocardio level 4 can enter tumor with the most appropriate length with surround electrode in making, to reach ideal therapeutic effect.
Adjacent central electrode is opposite with polarity between the surround electrode, makes to form strength between the adjacent electrode to remove tumor.
Fig. 1 is electrode penetrates human body when not working after for present embodiment, the state diagram of moving to tumor locus, and with electrode by taking out in people's tissue, electrode is in the structure chart of electriferous state.
As shown in Figure 1, present embodiment penetrates in the human body and when moving to tumor locus, outer electrode 5 all is arranged on puncture outer tube inside with internal layer electrode 6, and central electrode and outer electrode 5 and internal layer electrode 6 all are to be in uncharged state.After electrode enters tumor or other pathological tissues, then regulate each electrode and have corresponding polarity, if the setting central electrode is straight polarity electrode, so, outer electrode and internal layer electrode then are the negative polarity electrode.In addition, tumor or the treatment of other pathological tissues are finished, and in the time of ablating electrode need being taken out, because ablating electrode can cause damage to organization internal when entering inside of human body and organize, in order when ablating electrode takes out, to treat the tissue that damages, to prevent that it is 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 finishing from tumor site work, at the uniform velocity extracts when external ablating electrode, the tube wall place of the puncture outer tube that outer electrode 5 and internal layer electrode 6 are close with it with the electric current guiding, tube wall and the central electrode 4 of the puncture outer tube that has heat are heated damaging tissue with the central electrode that has heat, the micro-vessel sealing that ablating electrode is produced at piercing process is to prevent flow of tissue blood.
As shown in Figure 2, when telescoping handle was controlled a part of outer electrode 5 and internal layer electrode 6 and extended to the puncture outer tube outside, central electrode and outer electrode 5 and internal layer electrode 6 were working electrode.Learn according to foregoing, at this moment, outer electrode 5 and internal layer electrode 6 be the negative polarity 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 be launched the negative polarity electrode laterally.Because middle electrocardio level 4 can discharge straight polarity electrode and negative polarity electrode respectively with outer electrode 5 and internal layer electrode 6, its polarity is opposite, therefore, and according to producing the principle of strength between the positive and negative polarity electrode, to realize removing the purpose to tumor.
As shown in Figure 3, when outer electrode 5 and internal layer electrode 6 all extend to the puncture outer tube outside, regulating positive and negative polarity generator quits work central electrode, not charged, the polarity of internal layer electrode 6 can be set at straight polarity electrode or negative polarity electrode, the polarity of outer electrode 5 is set at straight polarity electrode or negative polarity electrode, and the final result who regulates of base is that internal layer electrode 6 is opposite with the polarity of outer electrode 5.Because outer electrode 5 can discharge straight polarity electrode and negative polarity electrode respectively with internal layer electrode 6, its polarity is opposite, therefore, and according to producing the principle of strength between the positive and negative polarity electrode, to realize removing the purpose to tumor.
Because middle electrocardio level 4 can discharge straight polarity electrode and negative polarity electrode respectively with surround electrode, compare with existing monopolar type ablating electrode, the firing rate of electrode tip of the present invention in the unit interval is faster, its treatment time also is lower than the time that the monopolar type ablating electrode consumes, thereby has also reduced the misery of patient in operation process.
Three of electrode kinds of user mode figure in Fig. 4 to Fig. 6 second embodiment of the invention.This bipolar ablation electrode that is used for the treatment of tumor comprises central electrode 1, surround electrode, puncture outer tube 3 and telescoping handle.Telescoping handle is made of drawing handle 1 and handle sleeve 2, and drawing handle 1 can carry out the front and back displacement 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.Also be provided with liquid injection hole 8 on handle sleeve 2, the end of liquid injection hole 8 is connected with the puncture outer tube, makes liquid along the slit output between puncture outer tube and the electrode.Can be to liquid such as the inner injecting normal saline of pathological tissues or chemotherapy liquid medicine by liquid injection hole 8, thus realize ablating electrode in to the pathological tissues treatment, can also carry out the fluid injection treatment 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 all is with electrode part to take place to be connected.Surround electrode is made of a plurality of internal layer electrodes 6 and a plurality of outer electrodes 5 of being arranged on its outside, and internal layer electrode 6 is staggered mode with outer electrode 5 and arranges.Internal layer electrode is that the center of circle is distributed in its outside with the central electrode, and outer electrode is the outside that the center of circle is distributed in internal layer electrode with the central electrode.Because surround electrode is to be that the center of circle is distributed in its outside with the central electrode, therefore, can make positive and negative polarity electrode act on the inside of tumor uniformly.
Outer wall at central electrode 4 and internal layer electrode 6 and outer electrode 5 is enclosed with electrode dielectric layer 7, and its end all is to be connected with positive and negative polarity generator.In the present embodiment, the quantity of internal layer electrode and outer electrode is 4.
At the inwall of handle sleeve 2 anelectrode contact chip 11 and negative electrode contact chip 13 are installed, on handle sleeve 2, also are provided with respectively an electrode cable joint 10 that is connected with negative electrode contact chip 13 with anelectrode contact chip 11.
In addition, internal layer electrode 6 also is connected with the second internal layer electrode contact point 16 that is arranged on electrode bundle 9 ends, the second internal layer electrode contact point 16 is in advancing handle displacement process forward, realize also and being connected of anodal contact chip 11 that the spacing between the second internal layer electrode contact point 16 and the central electrode contact point 12 is identical with the length of anodal contact chip 11.
Central electrode contact point 12 and the second internal layer electrode contact point 16 all are to be slidingly matched to form the slide rail type structure with the anelectrode contact chip, and constitute electrode generation part.Outer electrode contact point 14 and the first internal layer electrode contact point 15 all are slidingly matched to form the slide rail type structure with the negative electrode contact chip, and constitute electrode generation part.
Telescoping handle control centre electrode and surround electrode travel forward together, and the end of central electrode is arranged under reset mode on the front end face of puncture outer tube.Because the end of central electrode is arranged on the front end face of puncture outer tube all the time, therefore, enters in the tissue process in the present invention, can prevent that tissue from entering its inside by the front end of puncture outer tube, makes electrode enter inside tumor smoothly under reset mode.
By the development length of telescoping handle control centre electricity level 4 with surround electrode, electrocardio level 4 can enter tumor with the most appropriate length with surround electrode in making, to reach ideal therapeutic effect.
Adjacent central electrode is opposite with polarity between the surround electrode, makes to form strength between the adjacent electrode to remove tumor.
Fig. 4 is electrode penetrates human body when not working after for present embodiment, the state diagram of moving to tumor locus, and with electrode by taking out in people's tissue, electrode is in the structure chart of electriferous state.
As shown in Figure 4, present embodiment penetrates in the human body and when moving to tumor locus, outer electrode 5 all is arranged on puncture outer tube inside with internal layer electrode 6, and central electrode and outer electrode 5 and internal layer electrode 6 all are to be in uncharged state.After electrode enters tumor or other pathological tissues, then regulate each electrode and have corresponding polarity, if the setting central electrode is straight polarity electrode, so, outer electrode and internal layer electrode then are the negative polarity electrode.In addition, tumor or the treatment of other pathological tissues are finished, and in the time of ablating electrode need being taken out, because ablating electrode can cause damage to organization internal when entering inside of human body and organize, in order when ablating electrode takes out, to treat the tissue that damages, to prevent that it is 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 finishing from tumor site work, at the uniform velocity extracts when external ablating electrode, the tube wall place of the puncture outer tube that outer electrode 5 and internal layer electrode 6 are close with it with the electric current guiding, tube wall and the central electrode 4 of the puncture outer tube that has heat are heated damaging tissue with the central electrode that has heat, the micro-vessel sealing that ablating electrode is produced at piercing process is to prevent flow of tissue blood.
As shown in Figure 5, when telescoping handle was controlled a part of outer electrode and internal layer electrode and extended to the puncture outer tube outside, central electrode and outer electrode and internal layer electrode were working electrode.Learn according to foregoing, at this moment, outer electrode and internal layer electrode be the negative polarity 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 be launched the negative polarity electrode laterally.Because middle electrocardio level 4 can discharge straight polarity electrode and negative polarity electrode respectively with outer electrode and internal layer electrode, its polarity is opposite, therefore, and according to producing the principle of strength between the positive and negative polarity electrode, to realize removing the purpose to tumor.
As shown in Figure 6, when outer electrode and internal layer electrode all extended to the puncture outer tube outside, central electrode contact point 12 broke away from anodal contact chip 11 and forms uncharged state, thereby quits work.At this moment, because it is corresponding that the first internal layer electrode contact point 15 and the position of central electrode contact point 12 are vertical vertical mode, therefore, when the first internal layer electrode contact point 15 breaks away from negative pole contact chip 13, central electrode contact point 12 also breaks away from anodal contact chip 11 simultaneously, and the part position of outer electrode contact point 14 still still contacts with negative pole contact chip 13, and therefore, outer electrode still can discharge the negative polarity electrode.Because the rear side at central electrode contact point 12 also is provided with the second internal layer electrode contact point 16, therefore, when central electrode contact point 12 breaks away from anodal contact chip 11, the second internal layer electrode contact point 16 of its rear side just telescoping handle forward during displacement anodal contact chip 11 contact, thereby make internal layer electrode discharge straight polarity electrode.Because outer electrode and internal layer electrode can discharge straight polarity electrode and negative polarity electrode respectively, its polarity is opposite, therefore, and according to producing the principle of strength between the positive and negative polarity electrode, to realize removing the purpose to tumor.
Fig. 7 to Fig. 9 is respectively three kinds of user mode figure of electrode in the third embodiment of the invention.Structure and the working method of the 3rd embodiment and second embodiment are basic identical, and therefore, identical description content is not generally repeated.
The difference of the 3rd embodiment and second embodiment only is, is provided with the positive level electrode cable joint 17 that is connected with anelectrode contact chip 11 at handle sleeve 2, and the negative level electrode cable joint 18 that is connected with negative electrode contact chip 13.By said structure, can avoid among second embodiment, because the anelectrode contact chip all is to be connected with an electrode cable joint 10 to cause the circuit confusion with the negative electrode contact chip.
Only the above person only is preferred embodiment of the present invention, is familiar with the professional person of this skill such as. after understanding technological means of the present invention, natural energy is changed under instruction of the present invention according to the needs of reality.Therefore all equal variation and modifications of doing according to the present patent application claim once should still belong in the scope that patent of the present invention contains.
Claims (8)
1. bipolar ablation electrode that is 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 all is with electrode part to take place to be connected, 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 described surround electrode travels forward together, and the end of described central electrode is arranged on the front end face of described puncture outer tube under reset mode;
Described surround electrode is made of a plurality of internal layer electrodes and a plurality of outer electrodes of being arranged on its outside, and described internal layer electrode and described outer electrode are the mode of interlocking and arrange;
Adjacent described central electrode and the polarity between the described surround electrode are respectively straight polarity electrode and negative polarity electrode, under the effect of positive and negative polarity electrode, make to form strength between the adjacent electrode to remove tumor.
2. the bipolar ablation electrode that is 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 inside, described central electrode and described surround electrode are working electrode, its polarity is opposite, and described surround electrode conducts to heat on the tube wall of the described puncture outer tube that is adjacent;
When the described surround electrode of a part extended to the described puncture outer tube outside, described central electrode and described surround electrode were working electrode, and its polarity is opposite, made to form strength between described central electrode and the described surround electrode to remove tumor;
When whole described surround electrodes extended to the described puncture outer tube outside, a plurality of described internal layer electrodes and a plurality of described outer electrode were working electrode, and its polarity is opposite, made to form strength between described internal layer electrode and the described outer electrode to remove tumor.
3. the bipolar ablation electrode that is used for the treatment of tumor according to claim 2, it is characterized in that, outer wall at described central electrode and described surround electrode is enclosed with electrode dielectric layer, and described central electrode all is to be connected with the positive and negative polarity generator of outside by the electrode cable joint that is arranged on the electrode bundle end with described surround electrode.
4. the bipolar ablation electrode that is used for the treatment of tumor according to claim 3, it is characterized in that, described central electrode is connected with anodal contact chip by the central electrode contact point that is arranged on the electrode bundle end, and described central electrode contact point and described anodal contact chip cooperatively interact so that described central electrode produces straight polarity electrode;
Described outer electrode is connected with the negative pole contact chip by the outer electrode contact point that is arranged on the electrode bundle end, described internal layer electrode is connected with the negative pole contact chip by the first internal layer electrode contact point that is arranged on the electrode bundle end, described outer electrode contact point and the described first internal layer electrode contact point cooperatively interact so that described outer electrode and described internal layer electrode produce the negative polarity electrode, and the first internal layer electrode contact point is arranged on the front end of outer electrode contact point;
Described internal layer electrode also is connected with the second internal layer electrode contact point that is arranged on the electrode bundle end, the described second internal layer electrode contact point also is to be connected with described anodal contact chip, and the described second internal layer electrode contact point is arranged on the rear side of described central electrode contact point.
5. the bipolar ablation electrode that is used for the treatment of tumor according to claim 4, it is characterized in that, described central electrode contact point and the described second internal layer electrode contact point all are to be slidingly matched to form the slide rail type structure with described anelectrode contact chip, and constitute described electrode generation part;
Described outer electrode contact point and the described first internal layer electrode contact point all are slidingly matched to form the slide rail type structure with described negative electrode contact chip, and constitute described electrode generation part.
6. according to arbitrary described bipolar ablation electrode that is used for the treatment of tumor in the claim 1 to 5, it is characterized in that, described telescoping handle is made of drawing handle and handle sleeve, on described handle sleeve, also be provided with liquid injection hole 8, the end of described liquid injection hole 8 is connected with described puncture outer tube, makes liquid along the slit output between puncture outer tube and the electrode.
7. the bipolar ablation electrode that is used for the treatment of tumor according to claim 6, it is characterized in that, described anelectrode contact chip and described negative electrode contact chip are installed on the inwall of described handle sleeve, also are provided with respectively the electrode cable joint that is connected with described negative electrode contact chip with described anelectrode contact chip on described handle sleeve.
8. the bipolar ablation electrode that is used for the treatment of tumor according to claim 7, it is characterized in that, described internal layer electrode is that the center of circle is distributed in its outside with described central electrode, and described outer electrode is the outside that the center of circle is distributed in described internal layer electrode with described central electrode.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103610497A (en) * | 2013-12-03 | 2014-03-05 | 张家兴 | Ablation and volume reduction system for tumor tissues |
| CN110890795A (en) * | 2019-10-14 | 2020-03-17 | 宴晶科技(北京)有限公司 | Tumor thermal ablation device based on non-contact power supply |
| WO2020232851A1 (en) * | 2019-05-18 | 2020-11-26 | 杭州睿笛生物科技有限公司 | Electric pulse ablation instrument for use in endoscope |
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| CN103251452B (en) | 2015-04-08 |
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