CN107157573A - The mapping ablation catheter and ablating device and device application method of a kind of interpolar discharge - Google Patents
The mapping ablation catheter and ablating device and device application method of a kind of interpolar discharge Download PDFInfo
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- CN107157573A CN107157573A CN201610383961.4A CN201610383961A CN107157573A CN 107157573 A CN107157573 A CN 107157573A CN 201610383961 A CN201610383961 A CN 201610383961A CN 107157573 A CN107157573 A CN 107157573A
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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
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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
- A61B18/14—Probes or electrodes therefor
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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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00273—Anchoring means for temporary attachment of a device to tissue
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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
- 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
- A61B2018/00595—Cauterization
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
Abstract
The invention discloses the mapping ablation catheter and its application method of a kind of interpolar discharge, wherein described conduit includes body, its appearance is provided with electrode, tubular body is provided with wire, the wire is electrically connected with corresponding electrode, the quantity of the electrode is more than or equal at least one radio-frequency current emission electrode, at least one radio-frequency current receiving electrode in 2, and the electrode；The electrode is arranged on the end of body.At least two electrodes are provided with the ablation catheter of the present invention, during so that transmitting radio-frequency current using the electrode pair tissue on ablation catheter, radio-frequency current at least forms a closed-loop path by the electrode, tissue and other electrodes formation closed-loop path.It is arranged such, Transverse Heated can be carried out in tissue, compared to existing longitudinal direction heating, heating surface (area) (HS increases, and can quickly melt the lesion tissue of large area, saves the ablative surgery time, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
Description
This application claims Chinese patent application 2016101288636（The applying date, on March 7th, 2016）It is used as priority.
Technical field
The present invention relates to medical radio-frequency ablation techniques field, the mapping ablation catheter and ablating device and device application method of a kind of interpolar discharge are specifically related to.
Background technology
Human body is to contain substantial amounts of dielectric, such as ion, water, colloidal particles in many organic labyrinths constituted with inorganic substances, body fluid, and human body relies primarily on ion movement conduction electric current.In the presence of high-frequency alternating current, the change in concentration direction of ion comes and goes change with the sense of current for positive-negative half-cycle.Under the higher-order of oscillation, the ion between two electrodes is quickly moved along power line direction, and vibrational state is gradually become by mobile status.Because the size of various ions, quality, electric charge and translational speed are different, ion mutually rubs and is collided with other particulates and produce biological heat effect,
Radio frequency refers to radio frequency, but it is not belonging to the division of radio communication medium wave band, because radiance is very low in such frequency range, therefore less use in communication apparatus, effect in face of human body is mainly fuel factor, when the power frequency height of radio frequency arrives certain value, ion motion electrically charged in tissue can be caused so as to frictional heat, intraor extracellular moisture evaporation in tissue, drying is caused, pyknosis comes off so that aseptic necrosis.RF ablation is to carry out local heating's heating to the lesion tissue of human body using high-frequency radio-frequency current, from lesion tissue aseptic necrosis is caused, so as to reach the purpose for the treatment of.
At present, radio-frequency ablation procedure is applied to the treatment of a variety of diseases, arrhythmia cordis, all kinds of cancers, disc herniation and RFA thyroid glands etc..The equipment generally used is mainly the conduit containing electrode for the tissue that radio-frequency apparatus, back pole plate and contact will melt（Or electrode needle）Back pole plate is affixed at human body back or thigh, the tissue for the human body that ablation catheter contact containing electrode will melt, back pole plate is connected with an electrode of radio-frequency apparatus, electrode on ablation catheter is connected with another electrode of radio-frequency apparatus,, can be in radio-frequency apparatus, back pole plate, tissue and ablation catheter during such as radio-frequency apparatus work（Or electrode needle）Form the current loop of a closure, it is far longer than the area that the electrode on ablation catheter is contacted with tissue due to back pole plate and the area of human contact, the current density of the tissue contacted with back pole plate is much smaller than the tissue current density with ablation catheter electrode contact, in the presence of radio-frequency current, the temperature organized with the partial body of ablation catheter electrode contact is raised, when temperature reaches to a certain degree, partial body's necrosis.
But, the area melted using current ablation techniques is smaller, need to need repeatedly ablation during large area ablation, and, because back pole plate is affixed on human skin tissue, and need what is melted to be organized in inside of human body, whole human body can be powered when being melted by radio-frequency current, tissue particularly between the current path of ablation catheter and back pole plate, equally has temperature rise, and the risk for damaging normal structure is higher.
In summary, current ablation techniques carry out electric discharge ablation using the back pole plate and ablation catheter that are affixed on skin histology, and single ablation area is small and to damage the risk of normal structure higher.
Therefore, a kind of ablation techniques are needed badly, can increase single ablation area and damage normal structure risk it is relatively low.
The content of the invention
It is an object of the invention to：Melting the problem of area is small for current ablation catheter, there is provided a kind of mapping ablation catheter of interpolar discharge that can improve single ablation area and ablating device and device application method.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of mapping ablation catheter of interpolar discharge, including body, its appearance are provided with electrode, and tubular body is provided with wire, and the wire is electrically connected with corresponding electrode, it is characterised in that：
The quantity of the electrode is more than or equal at least one radio-frequency current emission electrode, at least one radio-frequency current receiving electrode in 2, and the electrode；The electrode is arranged on the end of body.
Above-mentioned radio-frequency current receiving electrode and radio-frequency current emission electrode in this case are included in same instantaneous, there is the electrode of electrical potential difference each other, two kinds of electrodes, which cooperate, to be set, the electrode is set to connect after radio-frequency current, radio-frequency current forms closed-loop path at two kinds between electrode, tissue, and at least forms a closed-loop path.
Existing ablation techniques paste back pole plate in human skin tissue, the tissue surface melted is needed to place ablation catheter in inside of human body, radio frequency electrical is streamed to by tissue by ablation catheter and back pole plate, quite apply electric current in the inner surface of tissue and outer surface, the sense of current is perpendicular to human tissue surface, heating direction is also perpendicular to human tissue surface's, therefore, certain depth can be melted, but, heated due to being only perpendicular to human body surface, only it is longitudinal heating, lack Transverse Heated source, in the transverse direction of human tissue surface heated by heat transfer, therefore, traversing heating zone is small, melt area small.
At least two electrodes are provided with the ablation catheter of the present invention, during so that transmitting radio-frequency current using the electrode pair tissue on ablation catheter, radio-frequency current at least forms a closed-loop path by the electrode, tissue and other electrodes formation closed-loop path.It is arranged such, Transverse Heated can be carried out in tissue, compared to existing longitudinal direction heating, heating surface (area) (HS increases, and can quickly melt the lesion tissue of large area, saves the ablative surgery time, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
In addition, clinically some cases are intermittent breaking-outs, therefore Induced by Stimulation disease need to be carried out in treatment, it is to be exactly found lesions position in ablation, but at present, for the searching of this kind of lesion tissue, need accurately to be positioned in seizure of disease, but, this kind of intermittent disease, its disease time is difficult to control to, more with drug-induced, increase patient's pain, although can be induced an illness by the way of electric shock, but existing medicine equipment does not have relevant device, and, also it is difficult to use the ablation catheter in existing ablation techniques to carry out induction stimulation, because it is too big that electric current transmits to ablation catheter the tissue area passed through by back pole plate, even if disease is induced, also it is difficult to the concrete position for determining lesion tissue, clinical at present do not induced using this direction finds lesion tissue.And two electrodes for applying electric current to tissue in this programme are arranged on ablation catheter, the tissue area that electric current passes through is small, easily accurately determine the particular location of lesion tissue, lesion tissue is found therefore, it is possible to induce an illness and help, the position of lesion tissue can be more quickly and accurately judged, the ablative surgery time can be saved, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
In addition, this programme directly sets multiple electrodes on ablation catheter, can be without back pole plate when being melted, after multiple electrodes are contacted with tissue, tissue to be ablated is streamed to so as to being melted by being arranged on supravasal electrode by radio frequency electrical, can be without back pole plate, hence in so that device is simpler when being melted.
Also, mapping positioning can be carried out using the application ablation catheter, after the completion of mapping positioning, directly can be melted using the application ablation catheter, it is more convenient to perform the operation.
The preferred technical solution of the present invention is as follows：
Preferably, include solution cavity in the tubular body, the solution cavity extends along catheter length direction, and close on conduit one end of electrode being provided with outlet.
Preferably, the body includes the insulating element for being arranged on the body end, the electrode is arranged on the insulating element, makes the electrode mutually insulated, in this way, mutually insulated between each electrode, can preferably be melted, ablation effect is more preferable.
Preferably, there is extension on the insulating element, the extension is respectively provided between the electrode.The extension of insulating element separates electrode.
Particularly, the insulating element is cylindrical shape, so simple in construction, and processing is more convenient, and manufacturing cost is low.And, eliminating medicine liquid is transmitted to tissue by the cylindrical vent of the insulating element, so, eliminating medicine liquid is inculcated in the central area of ablation, can obtain more preferable ablation effect, the electrode is arranged in the exterior lateral sides of the insulating element, so, electrode is more combined more firm with body, is had a safety feature, and the electrode is contacted tissue.
Preferably, the outlet of the solution cavity is provided with the body end.
Preferably, on the perspective plane perpendicular to body axis, the end face center that the end of tissue is stretched into the ablation catheter is provided with the outlet of the solution cavity, so, eliminating medicine liquid is inculcated in the central area of ablation, can obtain more preferable ablation effect, good cooling results.
It is preferred that, the diameter of at least part solution cavity is the 1/2 to 2/3 of the part solution chamber position pipe diameter.
Preferably, on the perspective plane perpendicular to body axis, it is circle that the ablation catheter, which stretches into the profile of the projection of the end of human body, there is the projection of the solution cavity in outer 1/3 radius region of the circular contour, in this way, the area of eliminating medicine liquid covering is big, ablation effect is good, good cooling results.
As preferred, the ablation catheter is also included by monitoring the temperature-detecting device that the electrode temperature monitors the tissue temperature of set ablation, and electrode is contacted with tissue, and the temperature of ablation site is transferred to electrode during ablation, particularly, the temperature-detecting device includes temperature sensor, in this way, can monitor the temperature of ablation tissue by the temperature for monitoring electrode, so, ablation safety, effect is good, and doctor can be facilitated to carry out ablative surgery.
As preferred, the electrode is stainless steel or platinum iridium alloy electrode, in this way, ablation effect is more preferable, more particularly, the raw material of electrode are the good heat conductivity of stainless steel or platinumiridio, stainless steel or platinumiridio, so, can be quickly by the heat transfer of ablation tissue to temperature-detecting device, the temperature of ablation tissue can be more quickly monitored, much sooner, ablation effect is good for monitoring.
It is a kind of to include the ablating device of above-mentioned ablation catheter, also include being used to produce radio-frequency apparatus described in the radio-frequency apparatus of radio-frequency current with two electrodes, respectively electrode first and electrode second, at least one described electrode is electrically connected with the electrode first, at least one described electrode is electrically connected with the electrode second, can carry out radiofrequency supplier electric current for ablation catheter.
A kind of method that mapping ablation catheter using above-mentioned interpolar discharge judges ablation locations：
（1）, default RF energy；
（2）, make the tissue near electrode contact lesion tissue described in the end of the ablation catheter；
（3）, start radio-frequency apparatus radio-frequency apparatus is sent step（1）The RF energy of middle determination is stimulated；
（4）, measurement feedback signal, the relative position between lesion tissue position and the electrode is determined according to feedback signal.
Include the ablating device of above-mentioned ablation catheter present invention also offers a kind of, it includes the radio frequency source for being used to produce radio-frequency current, the output area of the radio frequency source is greater than 0 and is less than 33HZ less than 200HZ, particularly greater than 0.
This programme stimulates tissue by shocking by electricity so as to induce an illness to aid in that the position for the tissue site for needing to melt need to be looked for, that is when determining the position of set ablation tissue using prior art, the step of using this programme, is aided in, two electrodes for applying electric current to tissue are arranged on ablation catheter, the tissue area that electric current passes through is small, easily accurately determine the particular location of lesion tissue, therefore, it can induce an illness and help to find lesion tissue, the position of lesion tissue can more quickly and accurately be judged, the ablative surgery time can be saved, improve ablation efficiency, so as to mitigate patient's pain, reduce operation risk.0 to the frequency between 33HZ stimulate and can effectively induce the diseased tissue of most of signature, and the other influences brought are smaller.
In summary, by adopting the above-described technical solution, the beneficial effect of the application is：
1st, ablation area is bigger：Prior art ablation is only perpendicular to the longitudinal direction heating of human tissue surface, can have certain depth of ablation, but ablation area is smaller, and the application can carry out Transverse Heated to body tissue surface, therefore ablation area is big；
2nd, the disease of some intermittent attacks can be stimulated to help to find lesion tissue：The ablation catheter of prior art is difficult to find lesion tissue by the way of radio-frequency current is stimulated, because the tissue scope between two electrodes is too big, two electrodes for applying electric current to tissue are arranged on ablation catheter by the application, the tissue area that electric current passes through is small, easily the accurate particular location for determining lesion tissue；
3rd, ablation area is big, melts efficiency high, can mitigate patient's pain, reduce operation risk.
4th, while having mapping and ablation functionality.
Brief description of the drawings
Fig. 1 is the structural representation of the application；
Fig. 2 is A-A profiles in Fig. 1；
Fig. 3 is the use schematic diagram of the application；
Marked in figure：1- electrodes one, 2- electrodes two, 3- insulating elements, 4- guiding bodys, 5- bodys, 51- solution cavities, 6- tissues, 7- intrusion pipes, the wire of 8- electrodes one, the wire of 9- electrodes two, 10- temperature sensors.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of mapping ablation catheter of interpolar discharge, including body 5, body 5 includes being used to transmit eliminating medicine liquid to the solution cavity 7 of tissue 6, the end that body 5 stretches into human body is provided with two and is used for conductive electrode, respectively electrode 11 and electrode 22, make electrode connect after radio-frequency current, and radio-frequency current sequentially passes through an electrode 11, one closed-loop path of tissue 6 and the formation of electrode 22.
Existing ablation techniques paste back pole plate in human skin tissue, the tissue surface melted is needed to place ablation catheter in inside of human body, radio frequency electrical is streamed to by tissue 6 by ablation catheter and back pole plate, quite apply electric current in the inner surface of tissue 6 and outer surface, the sense of current is perpendicular to the surface of tissue 6, heating direction is also perpendicular to the surface of tissue 6, therefore, certain depth can be melted, but, heated due to being only perpendicular to human body surface, only it is longitudinal heating, lack Transverse Heated source, transverse direction on the surface of tissue 6 is heated by heat transfer, therefore, traversing heating zone is small, melt area small.
By setting two electrodes on ablation catheter, and using the transmission radio-frequency current of electrode pair tissue 6 on ablation catheter, radio-frequency current sequentially passes through an electrode, tissue 6 and other electrodes formation closed-loop path, and at least form a closed-loop path, namely there are two electrode contact tissues 6 when being powered, so, exactly heated in the transverse direction of tissue 6, compared to existing longitudinal direction heating, heating surface (area) (HS increases, the lesion tissue of large area can quickly be melted, save the ablative surgery time, improve ablation efficiency, so as to mitigate patient's pain, reduce operation risk.
In addition, clinically some cases are intermittent breaking-outs, therefore Induced by Stimulation disease need to be carried out in treatment, it is to be exactly found lesions position in ablation, but at present, for the searching of this kind of lesion tissue, need accurately to be positioned in seizure of disease, but, this kind of intermittent disease, its disease time is difficult to control to, more with drug-induced, increase patient's pain, although can be induced an illness by the way of electric shock, but existing medicine equipment does not have relevant device, and, also it is difficult to use the ablation catheter in existing ablation techniques to carry out induction stimulation, because it is too big that electric current transmits to ablation catheter the area of tissue 6 passed through by back pole plate, even if disease is induced, also it is difficult to the concrete position for determining lesion tissue, clinical at present do not induced using this direction finds lesion tissue.And in tissue 6 apply electric current two electrodes be arranged on ablation catheter, the area of tissue 6 that electric current passes through is small, easily accurately determine the particular location of lesion tissue, lesion tissue is found therefore, it is possible to induce an illness and help, the position of lesion tissue can be more quickly and accurately judged, the ablative surgery time can be saved, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
In addition, two electrodes are directly set on ablation catheter, can be without back pole plate when being melted, after two electrodes are contacted with tissue 6, tissue 6 to be ablated is streamed to so as to being melted by being arranged on supravasal electrode by radio frequency electrical, can be without back pole plate, hence in so that device is simpler when being melted.
Body 5 includes the insulating element 3 for being arranged on the end of body 5, and electrode is arranged on insulating element 3, makes electrode mutually insulated, in this way, mutually insulated between each electrode, can preferably be melted, ablation effect is more preferable.
Particularly, insulating element 3 is cylindrical shape, so simple in construction, and processing is more convenient, and manufacturing cost is low.And, eliminating medicine liquid is transmitted to tissue 6 by the cylindrical vent of insulating element 3, so, eliminating medicine liquid is inculcated in the central area of ablation, can obtain more preferable ablation effect, electrode is arranged in the exterior lateral sides of insulating element 3, so, electrode is more combined more firm with body 5, is had a safety feature, and electrode is contacted tissue 6.
On the perspective plane perpendicular to the axis of body 5, solution cavity 7 is arranged on the center of the projection line of body 5, in this way, eliminating medicine liquid implantation can obtain more preferable ablation effect, good cooling results in the central area of ablation.
On the perspective plane perpendicular to the axis of body 5, the projection line of body 5 is circle, and solution cavity 7 is arranged on outer 1/3 radius region of the projection line of body 5, in this way, the area of eliminating medicine liquid covering is big, ablation effect is good, good cooling results.
Ablation catheter is also included by monitoring the temperature sensor 10 that electrode temperature monitors the temperature of tissue 6 of set ablation, electrode is contacted with tissue 6, the temperature of ablation site is transferred to electrode during ablation, so, the temperature of ablation tissue can be monitored by the temperature for monitoring electrode, in this way, ablation safety, effect is good, and doctor can be facilitated to carry out ablative surgery.
The raw material of electrode are the good heat conductivity of stainless steel or platinumiridio, stainless steel or platinumiridio, so, can be quickly by the heat transfer of ablation tissue to temperature sensor 10, the temperature of ablation tissue can be more quickly monitored, much sooner, ablation effect is good for monitoring.
It is a kind of to include the ablating device of above-mentioned ablation catheter, also include the radio-frequency apparatus for being used to produce radio-frequency current, radio-frequency apparatus has two electrodes, respectively electrode first and electrode second, electrode 11 is electrically connected with electrode first, electrode 22 is electrically connected with electrode second, can carry out radiofrequency supplier electric current for ablation catheter.
Ablating device also includes back pole plate, back pole plate is electrically connected with electrode first or electrode second, so, longitudinal heating can be carried out while Transverse Heated is carried out to tissue 6 by radio-frequency current, ablation area can be expanded in the case where ensureing depth of ablation, the lesion tissue of quick ablation large area, save the ablative surgery time, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
A kind of method of carry out superficial ablation using above-mentioned ablating device, comprises the following steps：
（One）, determine to need the tissue site that melts and melt RF energy needed for the tissue, to reach the thinner smaller lesion tissue of such as fine vascular, the end of ablation catheter is exposed outside guiding sheath body, and using the electrode mapping for being arranged in ablation catheter and stimulate determination to need the tissue site melted so as to aid in determining the tissue location that needs melt；
（Two）, the tissue site that melts the ends contact needs of ablation catheter, and determine the contact force of ablation catheter and tissue if appropriate for ablation；
（Three）, start radio-frequency apparatus radio-frequency apparatus is sent step（One）The RF energy of middle determination is melted.
The present embodiment need not irrigate eliminating medicine liquid, therefore the groundwater increment of eliminating medicine liquid need not be controlled, ablative surgery can be made simpler, and, the risk of eliminating medicine liquid normal tissue damage can be eliminated, the pain that eliminating medicine liquid is brought to patient can be eliminated, the risk that eliminating medicine liquid is damaged ablation catheter can be eliminated, the use scope of ablation catheter raw material can be increased, the cost of ablation catheter is reduced.
A kind of method melted using above-mentioned ablating device, is comprised the following steps：
（One）, determine to need the tissue site that melts and melt RF energy needed for the tissue；
（Two）, in human body back back pole plate, and the tissue site for melting ends contact needs of ablation catheter are set, in this way, ablation catheter can operationally make electrode, tissue, back pole plate form circuit closed loop；
（Three）, to ablation catheter irrigate eliminating medicine liquid, make eliminating medicine liquid reach needs melt tissue site；
（Four）, start radio-frequency apparatus radio-frequency apparatus is sent step（One）The RF energy of middle determination is melted.
The present embodiment can carry out longitudinal heating while Transverse Heated is carried out to tissue 6 by radio-frequency current, it can expand ablation area in the case where ensureing depth of ablation, the lesion tissue of quick ablation large area, save the ablative surgery time, improve ablation efficiency, so as to mitigate patient's pain, operation risk is reduced.
The step of above-mentioned ablation method（One）In, aid in that the position for the tissue site for needing to melt need to be looked for using following steps：
（1.1）, RF energy needed for the lesion tissue found is determined as needed；
（1.2）, make the tissue near the ends contact lesion tissue of the ablation catheter；
（1.3）, start radio-frequency apparatus radio-frequency apparatus is sent step（One）The RF energy of middle determination is stimulated；
（1.4）, observing response, determine lesion tissue position.
Three electrodes for applying electric current to tissue in the present embodiment are arranged on ablation catheter, the tissue area that electric current passes through is small, easily accurately determine the particular location of lesion tissue, lesion tissue is found therefore, it is possible to induce an illness and help, the position of lesion tissue can be more quickly and accurately judged, the ablative surgery time can be saved, ablation efficiency is improved, so as to mitigate patient's pain, operation risk is reduced.
Any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., should be included in the scope of the protection.
Claims (10)
1. a kind of mapping ablation catheter of interpolar discharge, including body, its appearance are provided with electrode, tubular body is provided with wire, and the wire is electrically connected with corresponding electrode, it is characterised in that：
The quantity of the electrode is more than or equal at least one radio-frequency current emission electrode, at least one radio-frequency current receiving electrode in 2, and the electrode；The electrode is arranged on the end of body.
2. mapping ablation catheter according to claim 1, it is characterised in that include solution cavity in the tubular body, the solution cavity extends along catheter length direction, and closes on conduit one end of electrode and be provided with outlet.
3. mapping ablation catheter according to claim 1 or 2, it is characterised in that the body includes the insulating element for being arranged on the body end, the electrode is arranged on the insulating element, makes the electrode mutually insulated.
4. mapping ablation catheter according to claim 2, it is characterised in that the end face center that the end of tissue is stretched into the ablation catheter is provided with the outlet of the solution cavity.
5. mapping ablation catheter according to claim 3, it is characterised in that have extension on the insulating element, the extension is respectively provided between the electrode.
6. mapping ablation catheter according to claim 3, it is characterised in that the diameter of at least part solution cavity is the 1/2 to 2/3 of the part solution chamber position pipe diameter.
7. mapping ablation catheter according to claim 6, it is characterised in that the ablation catheter is also included by monitoring the temperature-detecting device that the electrode temperature monitors the tissue temperature of set ablation.
8. a kind of include the ablating device of mapping ablation catheter described in claim 1~6 any one, also include the radio-frequency apparatus for being used to produce radio-frequency current, the radio-frequency apparatus has two electrodes, respectively electrode first and electrode second, at least one described electrode is electrically connected with the electrode first, and at least one described electrode is electrically connected with the electrode second.
9. a kind of method that mapping ablation catheter using above-mentioned interpolar discharge judges ablation locations：
（1）, default RF energy；
（2）, make the tissue near electrode contact lesion tissue described in the end of the ablation catheter；
（3）, start radio-frequency apparatus radio-frequency apparatus is sent step（1）The RF energy of middle determination is stimulated；
（4）, measurement feedback signal, the relative position between lesion tissue position and the electrode is determined according to feedback signal.
10. a kind of ablating device of the ablation catheter including described in one of claim 1 to 6, it also includes the radio frequency source for being used to produce radio-frequency current, and the output area of the radio frequency source is greater than 0 and less than 200HZ.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2016101288636 | 2016-03-07 | ||
| CN201610128863 | 2016-03-07 |
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| CN107157573A true CN107157573A (en) | 2017-09-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074861A (en) * | 2018-09-14 | 2019-08-02 | 杭州堃博生物科技有限公司 | Radio frequency ablation catheter, lung's radio frequency ablation system and corresponding control method, control device and computer readable storage medium |
| CN115153811A (en) * | 2022-09-07 | 2022-10-11 | 杭州德诺电生理医疗科技有限公司 | Ablation catheter and ablation system |
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| CN204814163U (en) * | 2015-01-26 | 2015-12-02 | 深圳市信立泰生物医疗工程有限公司 | Neural mark of kidney is surveyed and is melted pipe and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110074861A (en) * | 2018-09-14 | 2019-08-02 | 杭州堃博生物科技有限公司 | Radio frequency ablation catheter, lung's radio frequency ablation system and corresponding control method, control device and computer readable storage medium |
| CN115153811A (en) * | 2022-09-07 | 2022-10-11 | 杭州德诺电生理医疗科技有限公司 | Ablation catheter and ablation system |
| CN115153811B (en) * | 2022-09-07 | 2022-12-27 | 杭州德诺电生理医疗科技有限公司 | Ablation catheter and ablation system |
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