CN107440787A - A kind of basket shape ablation catheter and ablating device - Google Patents
A kind of basket shape ablation catheter and ablating device Download PDFInfo
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- CN107440787A CN107440787A CN201610383799.6A CN201610383799A CN107440787A CN 107440787 A CN107440787 A CN 107440787A CN 201610383799 A CN201610383799 A CN 201610383799A CN 107440787 A CN107440787 A CN 107440787A
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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
- 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
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Abstract
The invention discloses a kind of basket shape ablation catheter and ablating device, wherein, the basket shape ablation catheter, including electrode part, electrode part is in basket shape, and electrode portion point includes traction fiber and along the circumferentially distributed multiple electrodes group of traction fiber, and electrode group includes at least two electrode bands；Electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band.The ablating device includes the basket shape ablation catheter of radio frequency source and said structure.Basket shape ablation catheter and ablating device provided by the invention can carry out depth ablation and superficial ablation, ablation effect is good, different lesions positions and lesion tissue of different shapes can be melted, universality is strong, and simultaneous ablation, mapping, stimulation and impedance detection are integrated, and mapping is carried out without using extra mapping catheter, significantly reduce the pain of patient, medical expense is also reduced, safety, reliability height.
Description
Technical field
The present invention relates to ablation field, more particularly to a kind of basket shape ablation catheter and ablating device.
Background technology
That radio frequency ablation catheter electrode paste is leaned on into pathological tissues in Catheter Interventional Therapy, electrode release RF energy with
Back pole plate forms loop, conducts Joule heat and biological tissue caused by electric current in electromagnetic field of high frequency by biological tissue's intermediate ion
It is middle because of dielectric loss and caused by heat cause the temperature rises of pathological tissues because the poor radiation of pathological tissues and to high temperature-sensitive
Sense, so as to reach therapeutic purposes.Conventional multipole ablation at present is only the depth ablation of electrode pair back pole plate discharge type, is being needed
The position for carrying out targetedly superficial ablation is difficult to reach preferable ablation effect, and depth ablation might have damage healthy group
The danger knitted.
The inaccurate position that reclines can cause the irreversible damage of other health tissues, therefore be needed before ablation to focus
Position is accurately positioned, and currently used technology is first to place extra mapping catheter while ablating electrode melts to carry out
Ablation is carried out after mapping again, and difficulty and the time of operation can be increased by increasing extra mapping catheter progress ablation,
Simultaneously pain and expense are also increased to patient.
In addition, needing to determine the degree that reclines of electrode and tissue before ablation, if the degree that reclines is too weak, then can cause to melt
Effect becomes extreme difference, but conventional multipole ablation can not judge the degree that reclines of electrode and tissue.
The content of the invention
It is an object of the invention to overcome the targetedly superficial of the progress present in radio frequency ablation catheter in the prior art
The effect of ablation is poor, needs to carry out mapping using extra mapping catheter before ablation and can not judge that electrode reclines with what is organized
The technical problem of degree, there is provided one kind can either carry out depth ablation, and can and enough carry out targetedly superficial ablation and melt
The good basket shape ablation catheter of effect, the basket shape ablation catheter and ablation, mapping, stimulation and impedance detection are integrated, without
Mapping is carried out using extra mapping catheter, therapeutic effect is good, can mitigate patient's pain and reduce medical expense, safety, reliably
Property it is high；In addition, present invention also offers a kind of ablating device for including the basket shape ablation catheter.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of basket shape ablation catheter, including electrode part, electrode part is in basket shape, and electrode portion point includes traction fiber and edge
The circumferentially distributed multiple electrodes group of traction fiber, and electrode group includes at least two electrode bands；
Electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band.
In basket shape ablation catheter of the present invention, electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode
Band, it is meant that, each electrode band can both be used as radio-frequency transmissions electrode band by the selection of medical worker, can also be used as radio frequency
Receiving electrode band.
During work, medical worker can select which specific electrode band respectively as radio frequency by the interface on ablating device
Emission electrode band and radio frequency reception electrode band, in several electrode bands of selection, there can be a radio-frequency transmissions electrode band and extremely
A few radio frequency reception electrode band, it is possibility to have at least one radio-frequency transmissions electrode band and a radio frequency reception electrode band, both may be used
For several adjacent first electrodes in same electrode group, or several non-conterminous first electricity in same electrode group
Pole, can also be the electrode band in Different electrodes group.When loading high frequency voltage, radio-frequency transmissions electrode band and radio frequency reception electrode
Mutually electric discharge is stimulated between band, now, the lesion tissue between radio-frequency transmissions electrode band and radio frequency reception electrode band
Generate heat and heat up, because the poor radiation of lesion tissue and to high thermo-responsive, such that lesion tissue is under the high temperature conditions
Denaturation removes；Compared with the depth ablation that the electric discharge of electrode pair back pole plate in the prior art is carried out, this ablation mode is to be directed to
Property superficial ablation, avoid in the prior art using depth ablation mode to superficial tissues carry out ablation caused by damage
Hinder the risk of health tissues.It follows that basket shape ablation catheter of the present invention can carry out targetedly superficial ablation,
And it can guarantee that relatively good ablation effect.
Secondly, one of them or several electrode bands and back pole plate may be selected respectively as radio-frequency transmissions electrode band in medical worker
With radio frequency reception electrode band, when loading high frequency voltage, can mutually be discharged between electrode band and back pole plate is stimulated, thus
Explainable, basket shape ablation catheter of the present invention can also carry out depth ablation.
In addition, after choosing respectively as the electrode band of radio-frequency transmissions electrode band and radio frequency reception electrode band, loading is high
Frequency voltage, the impedance that can be emitted with quick detection between frequency emission electrode band and radio frequency reception electrode band, and then judge electrode
The fine or not degree to be reclined between band and lesion tissue, what is reclined is better, and impedance can be lower；It follows that in net of the present invention
Basket ablation catheter also has an impedance detection function, so can be between accurate judgement electrode band and lesion tissue the journey that reclines
Degree, not only facilitates use, and be favorably improved the ablation efficiency of the basket shape ablation catheter.
In basket shape ablation catheter of the present invention, each electrode band is designed with independent wire so that all electrodes
Band is respectively provided with mapping function, can independently extract electricity physiological signal, can be direct after electrode band mapping determines lesion tissue
RF energy is provided to melt lesion tissue；It follows that each electrode band sets independent wire so that carrying out
Extra mapping catheter need not be recycled to carry out mapping before ablation, not only increase ablation efficiency, and alleviate patient
Pain, also reduce medical expense.
It is connected as the preferred scheme of the present invention, in addition to body, the near-end of electrode group with body, and the distal end of electrode group
It is connected with the distal end of traction fiber, and the near-end of traction fiber is located in the shape of tubular body and coordination electrode part.
When running into different lesions positions or lesion tissue of different shapes, can be drawn as desired by joystick
Traction fiber is moved to change the shape of electrode part so that electrode part can be between linear, American football shape and basketball shaped freely
Switching, so that the basket shape ablation catheter can melt to different lesions positions and lesion tissue of different nature
Treatment, universality is strong, has a wide range of application, and also ensures there is the good degree that reclines between electrode part and lesion tissue,
Beneficial to the ablation effect for strengthening the basket shape ablation catheter.
It is electrically connected as the preferred scheme of the present invention, including the first wire, the radio-frequency transmissions electrode band with the first wire
Connect.
In basket shape ablation catheter of the present invention, all radio-frequency transmissions electrode bands electrically connect with the first wire,
I.e. all radio-frequency transmissions electrode bands share a wire, reduce the use to wire, and also save the inside of body
Space, beneficial to the miniaturization of body.
It is electrically connected as the preferred scheme of the present invention, including the second wire, the radio frequency reception electrode band with the second wire
Connect.
Ibid, all radio frequency reception electrode bands are electrically connected with the second wire, i.e., all radio frequency reception electrode bands are total to
With a wire, the use to wire is not only reduced, and also saves the inner space of body, facilitates the small-sized of body
Change.
As the preferred scheme of the present invention, the first temperature sensor is provided with the inside of electrode band.
In basket shape ablation catheter of the present invention, the first temperature sensor set on the inside of electrode band is used to survey in real time
The temperature on lesion tissue surface is measured, security guarantee is provided when carrying out ablation for doctor, avoids damaging because temperature is too high
The health tissues of sick and wounded people.
It is further preferred that the first temperature sensor is arranged on the inside of electrode band by insulating component layer.
In basket shape ablation catheter of the present invention, the first temperature sensor is arranged on electrode band by insulating component layer
Inner side, the setting of the insulating component layer to keep state of insulation between two neighboring electrode band, can avoid two neighboring electricity
Short circuit occurs because touching for pole band, and safety coefficient is high.
It is further preferred that the first temperature sensor is the first thermode electrically connected with electrode band.
In basket shape ablation catheter of the present invention, it is the first thermode by the first design for temperature sensor, can uses
Constantan line compared with prior art, further reduces the quantity using wire, is advantageous to the net as first thermode
The miniaturization of basket ablation catheter.
It is further preferred that the first temperature sensor includes the second thermode and the 3rd thermode being connected with each other, and the
The tie point of two thermodes and the 3rd thermode is arranged on the inside of electrode band.
It is to be arranged at same electrode by the first design for temperature sensor in basket shape ablation catheter of the present invention
The second thermode and the 3rd thermode with inner side, it can so utilize the thermoelectrical potential between the second thermode and the 3rd thermode
To calculate measurement temperature, the accuracy of the first temperature sensor real time temperature measurement is favorably improved；In addition, can use constantan line and
Copper cash is respectively as the second thermode and the 3rd thermode.
It is further preferred that the first temperature sensor includes the 4th thermode and the 5th thermode, the 4th thermode and
Inner side of five thermodes with same electrode band electrically connects, and the set-point of the 4th thermode and the set-point of the 5th thermode
Between be provided with spacing.
In basket shape ablation catheter of the present invention, the set-point of the 4th thermode and the set-point of the 5th thermode it
Between be provided with spacing, i.e., the 4th thermode and the 5th thermode are disposed on the inside of same electrode band, so contribute to increase
The temperature sense region of big first temperature sensor, it is possible to increase the precision of temperature detection, be suitable for larger to area
Lesion tissue carries out use during ablation.In addition, constantan line and copper cash can be respectively adopted in the 4th thermode and the 5th thermode.
As the preferred scheme of the present invention, electrode belt surface is provided with insulating barrier.
In basket shape ablation catheter of the present invention, electrode belt surface set insulating barrier, can avoid electrode band it
Between short circuit occurs when contacting, so as to ensure security that the basket shape ablation catheter uses.
Present invention also offers a kind of ablating device, the ablating device includes radio frequency source and is connected as above with the radio frequency source
Described basket shape ablation catheter.
Ablating device of the present invention is because include the basket shape ablation catheter of said structure, therefore ablation dress of the present invention
Depth ablation and targetedly superficial ablation can also be carried out by putting, and ablation effect is good, can be to different lesions positions and difference
The lesion tissue of shape is melted, and universality is strong, and simultaneous ablation, mapping, stimulation and impedance detection are integrated, without using volume
Outer mapping catheter carries out mapping, significantly reduces the pain of patient, also reduces medical expense, safety, and reliability is high.
It is all to be not specifically noted in addition, in technical scheme of the present invention, can be by using normal in this area
Technological means is advised to realize.
In summary, compared with prior art, beneficial effects of the present invention are as follows：
1st, in technical scheme of the present invention, electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band so that this
Targetedly superficial ablation, and can carry out depth ablation can not only be carried out by inventing the basket shape ablation catheter, moreover it is possible to
Ensure relatively good ablation effect, also cause basket shape ablation catheter of the present invention that there is the function of impedance detection, Jin Erneng
Enough judge the fine or not degree to be reclined between electrode band and lesion tissue；Because each electrode band is designed with independent wire so that
Electrode band all has mapping function, so that before ablation is carried out extra mapping catheter need not be recycled to enter rower
Survey, not only increase ablation efficiency, and alleviate the pain of patient, also reduce medical expense；
2nd, in technical scheme of the present invention, the near-end of electrode group is connected with body, and the distal end of electrode group and traction fiber
Distal end is connected, and the near-end of traction fiber is located in the shape of tubular body and coordination electrode part, and such design causes electrode
Part can between linear, American football shape and basketball shaped free switching so that the basket shape ablation catheter being capable of root
Ablation is carried out according to different lesions positions and lesion tissue of different shapes, universality is strong, has a wide range of application；
3rd, in technical scheme of the present invention, all radio-frequency transmissions electrode bands electrically connect with the first wire, or, own
Radio frequency reception electrode band electrically connected with the second wire, these all not only reduce the use to wire, and also save
The inner space of body, beneficial to the miniaturization of body；
4th, in technical scheme of the present invention, the first temperature sensor is arranged on the inside of electrode band by insulating component layer, should
The setting of insulating component layer to keep state of insulation between two neighboring electrode band, can avoid two neighboring electrode band because touching
Touch and short circuit occurs, safety coefficient is high；
5th, in technical scheme of the present invention, above-mentioned first temperature sensor includes the 4th thermode and the 5th thermode, and
Spacing is provided between the set-point of 4th thermode and the set-point of the 5th thermode, not only increases the temperature of the temperature sensor
Induction region is spent, but also the precision of temperature detection can be improved；
6th, because including the basket shape ablation catheter of said structure, ablating device of the present invention can carry out depth ablation and have
Targetedly superficial melts, and ablation effect is good, and different lesions positions and lesion tissue of different shapes can be melted, general
Adaptive is strong, and simultaneous ablation, mapping, stimulation and impedance detection are integrated, and carries out mapping without using extra mapping catheter, significantly
The pain of patient is alleviated, also reduces medical expense, safety, reliability height.
Brief description of the drawings
Fig. 1 is the structural representation of basket shape ablation catheter in embodiment 1, wherein, the linear shape in electrode part；
Fig. 2 is the structural representation of basket shape ablation catheter in embodiment 1, wherein, electrode part is in American football shape；
Fig. 3 is the structural representation of basket shape ablation catheter in embodiment 1, wherein, electrode part is in basketball shaped；
Fig. 4 is the partial enlarged drawing at A in Fig. 3；
Fig. 5 is the state that radio-frequency transmissions electrode band and radio frequency reception electrode band carry out ablation to lesion tissue in embodiment 1
Figure；
Fig. 6 is that first temperature sensor is arranged on the structural representation on the inside of electrode band in embodiment 1；
Fig. 7 is that first temperature sensor is arranged on the structural representation on the inside of electrode band in embodiment 2；
Fig. 8 is that first temperature sensor is arranged on the structural representation on the inside of electrode band in embodiment 3；
Marked in figure：1- traction fibers, 2- electrode bands, 3- bodys, the temperature sensors of 4- first, 5- insulating component layers, the heat of 6- first
Electrode, the thermodes of 7- second, the thermodes of 8- the 3rd, the thermodes of 9- the 4th, the thermodes of 10- the 5th, 11- antisitic defect structures, 12- diseases
Stove tissue.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
A kind of basket shape ablating electrode, including body 3 and electrode part, the body 3 are connected with the near-end of electrode part.
As shown in Figure 1, Figure 2 and Figure 3, the electrode part is in basket shape, and the electrode portion point includes traction fiber 1 and led along this
Draw 1 circumferentially distributed multiple electrodes group of silk, the distal end of the near-end of multiple electrodes group with body 3 is connected, multiple electrodes group
Distal end of the distal end with traction fiber 1 is connected, and the near-end of traction fiber 1 is located in the shape of the inside of body 3 and coordination electrode part；
Each electrode group includes at least two electrode bands 2, and electrode band 2 includes radio-frequency transmissions electrode band and radio frequency reception electrode band；Should
The distal end of traction fiber 1 is additionally provided with antisitic defect structure 11, to avoid electrode band 2 and the injury tissue of traction fiber 1, and the antisitic defect structure
11 be that its surface is smooth using made of the good material of flexibility, without corner angle, anti-at this to ensure relatively good security performance
The surface of damaged structure 11 is additionally provided with antisitic defect insulating barrier.
In the present embodiment, by joystick traction fiber 1 can be pulled to change according to lesions position and the different of shape
The shape of electrode part so that the shape of electrode part can linear, American football shape and it is spherical between free switching, specifically
For：It is linear shape under the electrode part original state, as shown in figure 1, can now carry out linear ablation；Disappeared if desired
It is larger to melt the area of the lesion tissue for the treatment of, only need to be by joystick by the pulled down of traction fiber 1, then electrode part will be expanded
Zhang Chengwei American football shapes, as shown in Fig. 2 can now carry out the ablation of tissue of larger area；If the electrode portion of American football shape
Divide and do not still meet demand, traction fiber 1 can be continued by pulled down by joystick, by the electrode portion of American football shape
It is basketball shaped to divide further expansion, as shown in figure 3, now electrode part can carry out greater area of ablation of tissue.
Each electrode band 2 can both be used as radio-frequency transmissions electrode band by the selection of medical worker, can also be used as and penetrate
Frequency receiving electrode band：
First, medical worker can select specific which electrode band 2 in same electrode group to divide by the interface on ablating device
Not Zuo Wei radio-frequency transmissions electrode band and radio frequency reception electrode band, in several electrode bands 2 of selection, can there is a radio-frequency transmissions
Electrode band and at least one radio frequency reception electrode band, it is possibility to have at least one radio-frequency transmissions electrode band and a radio frequency reception electricity
Pole band, both can be several adjacent electrode bands 2, or several non-conterminous electrode bands 2；Choosing radio-frequency transmissions electricity
After pole band and radio frequency reception electrode band, high frequency voltage is loaded, as shown in figure 5, radio-frequency transmissions electrode band and radio frequency reception electrode band
Between lesion tissue 12 generate heat and heat up, so that lesion tissue 12 to be deformed to removal under the high temperature conditions, now to be directed to
Property superficial ablation；
Secondly, medical worker selects specific several electrode bands 2 to distinguish by the interface on ablating device in different electrode groups
As radio-frequency transmissions electrode band and radio frequency reception electrode band, ibid, in the electrode band 2 of selection, there can be a radio-frequency transmissions
Electrode band and at least one radio frequency reception electrode band, it is possibility to have at least one radio-frequency transmissions electrode band and a radio frequency reception electricity
Pole band；Then high frequency voltage is loaded, as shown in figure 5, the lesion tissue between radio-frequency transmissions electrode band and radio frequency reception electrode band
12 generate heat and heat up, and so as to which lesion tissue 12 to be deformed to removal under the high temperature conditions, are now also melted for targetedly superficial；
Finally, at least one electrode band 2 also may be selected, in either same electrode group, be still located at different electricity respectively
Pole group, electrode band 2 and back pole plate are respectively as radio-frequency transmissions electrode band and radio frequency reception electrode band, when loading high frequency voltage,
Also can mutually be discharged between electrode band 2 and back pole plate is stimulated, to carry out depth ablation.
In addition, by loading high frequency voltage between above-mentioned radio-frequency transmissions electrode band and radio frequency reception electrode band, can be quick
Impedance therebetween is detected, and then the quality for the degree that can be reclined between accurate judgement electrode band 2 and lesion tissue 12, with
Just adjustment in time.
Again as shown in Figures 2 and 3, the inner side of electrode band 2 is provided with the first temperature sensor 4, is specially：As shown in figure 4, this
One temperature sensor 4 is arranged on the inner side of electrode band 2 by insulating component layer 5, and second temperature sensing is additionally provided with insulating component layer 5
Device, to detect the temperature of the insulating component layer 5 in real time, can avoid because temperature is too high and caused by potential safety hazard.
In the present embodiment, as shown in fig. 6, above-mentioned first temperature sensor 4 is the first heat for being arranged on the inner side of electrode band 2
Electrode 6, so reduce the quantity of wire, using the miniaturization of basket shape ablation catheter, and first thermode 6 is constantan
Line, constantan line has relatively low temperature-coefficient of electrical resistance, wider use temperature range, therefore the first thermode 6 is selected as constantan
Line, the precision for improving the thermometric of the first temperature sensor 4 is not only facilitated, and also ensure wider temperature in use model
Enclose.
The above-mentioned surface of electrode band 2 is provided with insulating barrier；In same electrode group, two neighboring electrode band 2 be arranged in parallel,
It can avoid that short circuit occurs because touching between two neighboring electrode band 2 to a certain extent, further increase the ablation of basket shape
The safety coefficient of conduit；What is more important, each electrode band 2 are connected with independent wire so that each electrode band 2 can
Mapping is carried out, can independently extract electricity physiological signal.
In the present embodiment, above-mentioned tubular body 3 is used made of plastic material, PEBAX, polyurethane or nylon material, with
Ensure that body 3 has good resilience and elastic recovery capability, facilitate the use of basket shape ablation catheter to a certain extent.
Embodiment 2
A kind of basket shape ablating electrode is present embodiments provided, the structure and the net of the offer of embodiment 1 of the basket shape ablating electrode
The structure of basket ablating electrode is substantially the same, and difference therebetween is：
As shown in fig. 7, above-mentioned first temperature sensor 4 includes the second thermode 7 and the 3rd thermode 8 being connected with each other, and should
The tie point of second thermode 7 and the 3rd thermode 8 is arranged on the inner side of electrode band 2；Wherein, in the present embodiment, the second thermoelectricity
The thermode 8 of pole 7 and the 3rd is respectively constantan line and copper cash, has larger thermo-electromotive force between constantan line and copper cash, such
It is designed to ensure that the first temperature sensor 4 has higher measurement accuracy.
In addition, in above-mentioned electrode part, including the first wire, all radio-frequency transmissions electrode bands with first wire
Electrical connection, radio frequency reception electrode band are respectively equipped with single wire, so reduce the use to wire, save body 3
Space, it is additionally favorable for the miniaturization of body 3.
Embodiment 3
A kind of basket shape ablating electrode is present embodiments provided, the structure and the net of the offer of embodiment 1 of the basket shape ablating electrode
The structure of basket ablating electrode is substantially the same, and difference therebetween is：
As shown in figure 8, above-mentioned first temperature sensor 4 includes the 4th thermode 9 and the 5th thermode 10, the 4th thermode 9
Electrically connected with inner side of the 5th thermode 10 with same electrode band 2, and the set-point of the 4th thermode 9 and the 5th thermoelectricity
Spacing is provided between the set-point of pole 10, the spacing is 1 ~ 4mm, so both ensure that bigger temperature sense region, and
Relatively good temperature measurement accuracy is also assures that, if this is smaller than 1mm, then temperature sense region is too small, it is impossible to meets face
The larger lesion tissue of product, if the spacing is more than 4mm, then the temperature measurement accuracy of first temperature sensor 4 can significantly drop
It is low, run counter to the original intention that the first temperature sensor 4 is set.
It is same as above, in the present embodiment, the 4th thermode 9 and the 5th thermode 10 are selected as constantan line and copper cash,
It is favorably improved the measurement accuracy of the first temperature sensor 4.
In addition, in above-mentioned electrode part, in addition to the second wire, all radio frequency reception electrode bands second are led with this
Line electrically connects, and so reduces the use to wire, saves the inner space of body 3, beneficial to the miniaturization of body 3.
Embodiment 4
A kind of ablating device is present embodiments provided, the ablating device includes radio frequency source and the basket shape adjacent with the radio frequency source disappears
Melt conduit, structure and the basket shape ablation catheter in above-described embodiment 1, embodiment 2 or embodiment 3 of the basket shape ablation catheter
Structure it is identical.
The ablating device that the present embodiment provides can carry out depth ablation and targetedly superficial melts, ablation effect
It is good, different lesions positions and lesion tissue of different shapes can be melted, universality is strong, and and ablation, mapping, stimulation
It is integrated with impedance detection, carries out mapping without using extra mapping catheter, significantly reduce the pain of patient, also reduce
Medical expense, safety, reliability are high.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (11)
1. a kind of basket shape ablation catheter, including electrode part, it is characterised in that the electrode part is in basket shape, and described
Electrode portion point includes traction fiber and along the circumferentially distributed multiple electrodes group of the traction fiber, and the electrode group includes at least two
Electrode band；
The electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band.
2. basket shape ablation catheter according to claim 1, it is characterised in that also including body, the electrode group it is near
End is connected with body, and the distal end of the electrode group is connected with the distal end of traction fiber, and the near-end of the traction fiber is located in institute
State the shape of tubular body and coordination electrode part.
3. basket shape ablation catheter according to claim 1, it is characterised in that including the first wire, the radio-frequency transmissions
Electrode band electrically connects with the first wire.
4. basket shape ablation catheter according to claim 1, it is characterised in that including the second wire, the radio frequency reception
Electrode band electrically connects with the second wire.
5. basket shape ablation catheter according to claim 1, it is characterised in that be provided with the first temperature on the inside of the electrode band
Sensor.
6. basket shape ablation catheter according to claim 5, it is characterised in that first temperature sensor passes through insulation
Components layer is arranged on the inside of electrode band.
7. basket shape ablation catheter according to claim 5, it is characterised in that first temperature sensor be with it is described
First thermode of electrode band electrical connection.
8. basket shape ablation catheter according to claim 5, it is characterised in that first temperature sensor includes mutual
The second thermode and the 3rd thermode of connection, and the tie point of second thermode and the 3rd thermode is arranged on the electricity
On the inside of the band of pole.
9. basket shape ablation catheter according to claim 5, it is characterised in that first temperature sensor includes the 4th
Thermode and the 5th thermode, the 4th thermode and inner side of the 5th thermode with same electrode band electrically connect, and
Spacing is provided between the set-point of 4th thermode and the set-point of the 5th thermode.
10. basket shape ablation catheter according to claim 1, it is characterised in that the electrode belt surface is provided with insulating barrier.
A kind of 11. ablating device, it is characterised in that the claims 1 ~ 10 being connected including radio frequency source and with the radio frequency source
Basket shape ablation catheter described in middle any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383799.6A CN107440787B (en) | 2016-06-01 | 2016-06-01 | A kind of mesh basket shape ablation catheter and ablating device |
| PCT/CN2016/089275 WO2017206266A1 (en) | 2016-06-01 | 2016-07-07 | Basket-type ablation catheter and ablation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383799.6A CN107440787B (en) | 2016-06-01 | 2016-06-01 | A kind of mesh basket shape ablation catheter and ablating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107440787A true CN107440787A (en) | 2017-12-08 |
| CN107440787B CN107440787B (en) | 2019-09-03 |
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| CN201610383799.6A Active CN107440787B (en) | 2016-06-01 | 2016-06-01 | A kind of mesh basket shape ablation catheter and ablating device |
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| CN (1) | CN107440787B (en) |
| WO (1) | WO2017206266A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021208847A1 (en) * | 2020-04-13 | 2021-10-21 | 杭州德诺电生理医疗科技有限公司 | Ablation device and preparation method therefor |
| CN114587570A (en) * | 2022-03-21 | 2022-06-07 | 四川锦江电子科技有限公司 | Gridding electrode catheter |
| WO2023284539A1 (en) * | 2021-07-12 | 2023-01-19 | 心航路医学科技(广州)有限公司 | Mesh basket-shaped electrode for ablation |
| WO2023236402A1 (en) * | 2022-06-06 | 2023-12-14 | 深圳北芯医疗科技有限公司 | Electrophysiological catheter |
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| CN101190146A (en) * | 2006-11-21 | 2008-06-04 | 李楚森 | Cardiac intervention ablation catheter |
| WO2009072035A1 (en) * | 2007-12-06 | 2009-06-11 | Koninklijke Philips Electronics N.V. | Apparatus, a method and a computer program for applying energy to an object |
| CN102711642A (en) * | 2009-09-22 | 2012-10-03 | 麦迪尼治疗公司 | Systems and methods for controlling use and operation of a family of different treatment devices |
| CN103908334A (en) * | 2012-12-31 | 2014-07-09 | 上海微创电生理医疗科技有限公司 | Multi-electrode ablation catheter |
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| CN103519888A (en) * | 2013-10-30 | 2014-01-22 | 上海魅丽纬叶医疗科技有限公司 | Radiofrequency electrode with temperature measurement function and impedance measurement function and radiofrequency ablatograph |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021208847A1 (en) * | 2020-04-13 | 2021-10-21 | 杭州德诺电生理医疗科技有限公司 | Ablation device and preparation method therefor |
| WO2023284539A1 (en) * | 2021-07-12 | 2023-01-19 | 心航路医学科技(广州)有限公司 | Mesh basket-shaped electrode for ablation |
| CN114587570A (en) * | 2022-03-21 | 2022-06-07 | 四川锦江电子科技有限公司 | Gridding electrode catheter |
| WO2023236402A1 (en) * | 2022-06-06 | 2023-12-14 | 深圳北芯医疗科技有限公司 | Electrophysiological catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017206266A1 (en) | 2017-12-07 |
| CN107440787B (en) | 2019-09-03 |
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