CN107440787B - A kind of mesh basket shape ablation catheter and ablating device - Google Patents
A kind of mesh basket shape ablation catheter and ablating device Download PDFInfo
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- CN107440787B CN107440787B CN201610383799.6A CN201610383799A CN107440787B CN 107440787 B CN107440787 B CN 107440787B CN 201610383799 A CN201610383799 A CN 201610383799A CN 107440787 B CN107440787 B CN 107440787B
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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
- A61B2018/1407—Loop
Abstract
The invention discloses a kind of mesh basket shape ablation catheter and ablating devices, wherein the mesh basket shape ablation catheter, including electrode section, electrode section is in mesh basket shape, and electrode section includes traction fiber and the multiple electrodes group circumferentially distributed along 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 mesh basket shape ablation catheter of radio frequency source and above structure.Mesh basket shape ablation catheter and ablating device provided by the invention are able to 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 carries out mapping without using additional mapping catheter, significantly reduce the pain of patient, medical expense is also reduced, safety, high reliablity.
Description
Technical field
The present invention relates to ablation field, in particular to a kind of mesh basket shape ablation catheter and ablating device.
Background technique
By radio frequency ablation catheter electrode paste by pathological tissues in Catheter Interventional Therapy, electrode discharge RF energy with
Back pole plate forming circuit conducts Joule heat caused by electric current and biological tissue in electromagnetic field of high frequency by biological tissue's intermediate ion
The middle heat generated by dielectric loss increases the temperature of pathological tissues, because of the poor radiation of pathological tissues and to high temperature-sensitive
Sense, to reach therapeutic purposes.Conventional multipole ablation at present is only that electrode melts the depth of back pole plate discharge type, is being needed
The position for carrying out targetedly superficial ablation is difficult to reach ideal ablation effect, and depth ablation might have damage healthy group
The danger knitted.
The position that reclines of inaccuracy will cause the irreversible damage of other health tissues, therefore need before ablation to lesion
Position is accurately positioned, and currently used technology is first to place additional mapping catheter while ablating electrode ablation to carry out
Ablation is carried out after mapping again, and increases additional mapping catheter progress ablation and will increase difficulty and the time of operation,
Pain and expense are also increased to patient simultaneously.
In addition, needing to determine that electrode and the degree that reclines of tissue then will lead to ablation if the degree that reclines is too weak before ablation
Effect becomes very poor, but conventional multipole ablation can not determine the degree that reclines of electrode and tissue.
Summary of the invention
It is an object of the invention to overcome the targeted superficial of carry out present in radio frequency ablation catheter in the prior art
The effect of ablation is poor, needs to carry out mapping using additional mapping catheter before ablation and can not judge that electrode reclines with what is organized
The technical issues of degree, depth ablation can either be carried out, be able to carry out targeted superficial ablation again and melt by providing one kind
The good mesh basket shape ablation catheter of effect, the mesh basket shape ablation catheter and ablation, mapping, stimulation and impedance detection are integrated, and are not necessarily to
Mapping is carried out using additional mapping catheter, therapeutic effect is good, and it can mitigate patient's pain and reduce medical expense, safety, reliably
Property it is high；In addition, the present invention also provides a kind of ablating devices including the mesh basket shape ablation catheter.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of mesh basket shape ablation catheter, including electrode section, electrode section is in mesh basket shape, and electrode section includes traction fiber
And the multiple electrodes group circumferentially distributed along 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 mesh 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 both can be used as radio-frequency transmissions electrode band by the selection of medical worker, can also be used as radio frequency
Receiving electrode band.
When 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 can have radio-frequency transmissions electrode band and extremely in several electrode bands of selection
A few radio frequency reception electrode band, can also have at least one radio-frequency transmissions electrode band and a radio frequency reception electrode band, both may be used
It can also be non-conterminous first electricity several in the same electrode group for several adjacent first electrodes in the 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, at this point, the lesion tissue between radio-frequency transmissions electrode band and radio frequency reception electrode band
It generates heat and heats up, because of the poor radiation of lesion tissue and to high thermo-responsive, such that lesion tissue is under the high temperature conditions
Denaturation removal；Compared with the depth ablation that electrode in the prior art carries out back pole plate electric discharge, 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 brought by damage
Hurt the risk of health tissues.It follows that mesh basket shape ablation catheter of the present invention is able to carry out targeted superficial ablation,
And it can guarantee 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 discharge between electrode band and back pole plate is stimulated, thus
It can illustrate, mesh basket shape ablation catheter of the present invention also can be carried out depth ablation.
In addition, load is high after choosing respectively as the electrode band of radio-frequency transmissions electrode band and radio frequency reception electrode band
Frequency voltage can quickly detect the impedance between radio-frequency transmissions electrode band and radio frequency reception electrode band, and then judge electrode
The fine or not degree to recline 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 the function of impedance detection, and then being capable of the journey that reclines between accurate judgement electrode band and lesion tissue
Degree, is not only convenient to use, but also help to improve the ablation efficiency of the mesh basket shape ablation catheter.
In mesh basket shape ablation catheter of the present invention, each electrode band is designed with independent conducting wire, so that all electrodes
Band all has 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；Carrying out it follows that independent conducting wire is arranged in each electrode band
It no longer needs to carry out mapping using additional mapping catheter before ablation, not only increases ablation efficiency, and alleviate patient
Pain, also reduce medical expense.
It as a preferred solution of the present invention, further include tube body, the proximal end of electrode group is connected with tube body, and the distal end of electrode group
It is connected with the distal end of traction fiber, and the proximal end of traction fiber is threaded through the shape of tubular body and coordination electrode part.
When encountering different lesions position or lesion tissue of different shapes, it can according to need and drawn by control handle
Traction fiber is moved to change the shape of electrode section, enables electrode section free between linear, American football shape and basketball shaped
Switching, so that the mesh basket shape ablation catheter can melt 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 section and lesion tissue,
Conducive to the ablation effect for enhancing the mesh basket shape ablation catheter.
As a preferred solution of the present invention, including the first conducting wire, the radio-frequency transmissions electrode band are electrically connected with the first conducting wire
It connects.
In mesh basket shape ablation catheter of the present invention, all radio-frequency transmissions electrode bands are electrically connected with the first conducting wire,
I.e. all radio-frequency transmissions electrode bands share a conducting wire, reduce the use to conducting wire, and also save the inside of tube body
Space, conducive to the miniaturization of tube body.
As a preferred solution of the present invention, including the second conducting wire, the radio frequency reception electrode band are electrically connected with the second conducting wire
It connects.
Ibid, all radio frequency reception electrode bands are electrically connected with the second conducting wire, i.e., all radio frequency reception electrode bands are total
With a conducting wire, the use to conducting wire is not only reduced, and also saves the inner space of tube body, facilitates the small-sized of tube body
Change.
As a preferred solution of the present invention, the first temperature sensor is equipped on the inside of electrode band.
In mesh basket shape ablation catheter of the present invention, the first temperature sensor being arranged on the inside of electrode band for surveying in real time
The temperature for measuring lesion tissue surface, provides security guarantee when carrying out ablation for doctor, avoids damaging because temperature is excessively 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 mesh basket shape ablation catheter of the present invention, the first temperature sensor is arranged by insulating component layer in electrode band
Inside, the setting of the insulating component layer can be avoided two neighboring electricity so that keep state of insulation between two neighboring electrode band
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 being electrically connected with electrode band.
In mesh basket shape ablation catheter of the present invention, the first temperature sensor is designed as the first thermode, can be used
Constantan line is as first thermode, compared with prior art, further reduces the quantity using conducting wire, is conducive to the net
The miniaturization of basket ablation catheter.
It is further preferred that the first temperature sensor includes the second thermode and third thermode interconnected, and the
The tie point of two thermodes and third thermode is arranged on the inside of electrode band.
In mesh basket shape ablation catheter of the present invention, the first temperature sensor is designed as to be arranged at the same electrode
The second thermode and third thermode with inside, can use the thermoelectrical potential between the second thermode and third thermode in this way
Calculate measurement temperature, helps to improve the accuracy of the first temperature sensor real time temperature measurement；In addition, can be used constantan line and
Copper wire is respectively as the second thermode and third thermode.
It is further preferred that the first temperature sensor includes the 4th thermode and the 5th thermode, the 4th thermode and the
Five thermodes are electrically connected with the inside of the same electrode band, and the set-point of the set-point of the 4th thermode and the 5th thermode
Between be equipped with spacing.
In mesh basket shape ablation catheter of the present invention, the set-point of the set-point of the 4th thermode and the 5th thermode it
Between be equipped with spacing, i.e., the 4th thermode and the 5th thermode are disposed on the inside of same electrode band, facilitate to increase in this way
The temperature sense region of big first temperature sensor, can be improved the precision of temperature detection, suitable for biggish to area
Lesion tissue carries out use when ablation.In addition, constantan line and copper wire can be respectively adopted in the 4th thermode and the 5th thermode.
As a preferred solution of the present invention, electrode belt surface is equipped with insulating layer.
In mesh basket shape ablation catheter of the present invention, electrode belt surface be arranged insulating layer, can be avoided electrode band it
Between contact when occur short circuit, to guarantee the safety that the mesh basket shape ablation catheter uses.
The present invention also provides a kind of ablating device, which includes radio frequency source and is connected with the radio frequency source as above
The mesh basket shape ablation catheter.
Ablating device of the present invention is because include the mesh basket shape ablation catheter of above structure, therefore ablation of the present invention fills
It sets and is also able to carry out depth ablation and the ablation of targeted superficial, 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, high reliablity.
It is all to be not specifically noted in addition, in technical solution of the present invention, it can be by using normal in this field
Technological means is advised to realize.
In conclusion compared with prior art, beneficial effects of the present invention are as follows:
1, in technical solution of the present invention, electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band, is made
Targeted superficial ablation can not only be carried out by obtaining mesh basket shape ablation catheter of the present invention, and can be carried out depth ablation,
Also ensure relatively good ablation effect, but also mesh basket shape ablation catheter of the present invention has the function of impedance detection, into
And it can judge the fine or not degree to recline between electrode band and lesion tissue；Because each electrode band is designed with independent conducting wire,
So that electrode band all has the function of mapping, so that no longer needing to carry out using additional mapping catheter before carrying out ablation
Mapping not only increases ablation efficiency, and alleviates the pain of patient, also reduces medical expense；
2, in technical solution of the present invention, the proximal end of electrode group is connected with tube body, and the distal end of electrode group and traction
The distal end of silk is connected, and the proximal end of traction fiber is threaded through the shape of tubular body and coordination electrode part, such design so that
Electrode section can between linear, American football shape and basketball shaped free switching so that the mesh basket shape ablation catheter energy
Enough to carry out ablation according to different lesions positions and lesion tissue of different shapes, universality is strong, has a wide range of application；
3, in technical solution of the present invention, all radio-frequency transmissions electrode bands are electrically connected with the first conducting wire, alternatively,
All radio frequency reception electrode bands are electrically connected with the second conducting wire, these all not only reduce the use to conducting wire, but also save
The inner space of tube body is saved, conducive to the miniaturization of tube body；
4, in technical solution of the present invention, the first temperature sensor is arranged in electrode band by insulating component layer
Side, the setting of the insulating component layer can be avoided two neighboring electrode so that keep state of insulation between two neighboring electrode band
Short circuit occurs because touching for band, and safety coefficient is high；
5, in technical solution of the present invention, above-mentioned first temperature sensor includes the 4th thermode and the 5th thermoelectricity
Pole, and spacing is equipped between the set-point of the 4th thermode and the set-point of the 5th thermode, not only increase the temperature sensing
The temperature sense region of device, but also can be improved the precision of temperature detection；
6, because including the mesh basket shape ablation catheter of above structure, ablating device of the present invention is able to carry out depth ablation
It is melted with targeted superficial, ablation effect is good, can disappear to different lesions positions and lesion tissue of different shapes
Melt, universality is strong, and simultaneous ablation, mapping, stimulation and impedance detection are integrated, and are marked without using additional mapping catheter
It surveys, significantly reduces the pain of patient, also reduce medical expense, safety, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mesh basket shape ablation catheter in embodiment 1, wherein the linear shape of electrode section；
Fig. 2 is the structural schematic diagram of mesh basket shape ablation catheter in embodiment 1, wherein electrode section is in American football shape；
Fig. 3 is the structural schematic diagram of mesh basket shape ablation catheter in embodiment 1, wherein electrode section is in basketball shaped；
Fig. 4 is the partial enlarged view in Fig. 3 at A；
Fig. 5 is that radio-frequency transmissions electrode band and radio frequency reception electrode band carry out ablation to lesion tissue in embodiment 1
State diagram；
Fig. 6 is that the structural schematic diagram on the inside of electrode band is arranged in first temperature sensor in embodiment 1；
Fig. 7 is that the structural schematic diagram on the inside of electrode band is arranged in first temperature sensor in embodiment 2；
Fig. 8 is that the structural schematic diagram on the inside of electrode band is arranged in first temperature sensor in embodiment 3；
Marked in the figure: 1- traction fiber, 2- electrode band, 3- tube body, the first temperature sensor of 4-, 5- insulating component layer, 6-
One thermode, the second thermode of 7-, 8- third thermode, the 4th thermode of 9-, the 5th thermode of 10-, 11- antisitic defect structure,
12- lesion tissue.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
A kind of mesh basket shape ablating electrode, including tube body 3 and electrode section, the tube body 3 are connect with the proximal end of electrode section.
As shown in Figure 1, Figure 2 and Figure 3, which is in mesh basket shape, and the electrode section includes traction fiber 1 and leads along this
Draw 1 circumferentially distributed multiple electrodes group of silk, the proximal end of multiple electrodes group is connected with the distal end of tube body 3, multiple electrodes group
Distal end is connect with the distal end of traction fiber 1, and the proximal end of traction fiber 1 is threaded through the shape of 3 inside of tube body 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；It should
The distal end of traction fiber 1 is additionally provided with antisitic defect structure 11, to avoid 1 injury tissue of electrode band 2 and traction fiber, and the antisitic defect structure
11 be using made of the good material of flexibility, and surface is smooth, without corner angle, anti-at this to guarantee relatively good security performance
The surface of damaged structure 11 is additionally provided with antisitic defect insulating layer.
In the present embodiment, traction fiber 1 can be pulled to change by control handle according to the difference of lesions position and shape
The shape of electrode section, enable the shape of electrode section linear, American football shape and it is spherical between free switching, specifically
Are as follows: it is linear shape under the electrode section original state, as shown in Figure 1, linear ablation can be carried out at this time；Disappear if necessary
The area for melting the lesion tissue for the treatment of is larger, only need to be by control handle by 1 pulled down of traction fiber, then electrode section will expand
Zhang Chengwei American football shape, as shown in Fig. 2, the ablation of tissue of larger area can be carried out at this time；If the electrode portion of American football shape
Divide and do not still meet demand, traction fiber 1 can be continued into pulled down by control handle, will be in the electrode portion of American football shape
Dividing further expansion is basketball shaped, as shown in figure 3, electrode section can be carried out greater area of ablation of tissue at this time.
Each electrode band 2 both can be used as radio-frequency transmissions electrode band by the selection of medical worker, can also be used as and penetrates
Frequency receiving electrode band:
Firstly, medical worker can select which specific electrode band in the same electrode group by the interface on ablating device
2 respectively as radio-frequency transmissions electrode band and radio frequency reception electrode band, in several electrode bands 2 of selection, can there is a radio frequency
Emission electrode band and at least one radio frequency reception electrode band, can also have at least one radio-frequency transmissions electrode band and a radio frequency to connect
Electrode band is received, both can be several adjacent electrode bands 2, or several non-conterminous electrode bands 2；Choosing radio frequency hair
After penetrating electrode 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 electricity
Lesion tissue 12 between the band of pole generates heat and heats up, so that lesion tissue 12 to be deformed to removal under the high temperature conditions, at this time to have
Targetedly superficial melts；
Secondly, medical worker selects specific several electrode bands 2 by the interface on ablating device in different electrode groups
Respectively 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
Emission electrode band and at least one radio frequency reception electrode band, can also have at least one radio-frequency transmissions electrode band and a radio frequency to connect
Receive electrode band；Then high frequency voltage is loaded, as shown in figure 5, the lesion between radio-frequency transmissions electrode band and radio frequency reception electrode band
Tissue 12 generates heat and heats up, and is at this time also targeted superficial so that lesion tissue 12 to be deformed to removal under the high temperature conditions
Ablation；
Finally, at least one electrode band 2 also may be selected, in the either same electrode group, it is still located at difference
Electrode group, electrode band 2 and back pole plate are respectively as radio-frequency transmissions electrode band and radio frequency reception electrode band, when load high frequency voltage
When, also can mutually discharge 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, it can be quick
Detect impedance between the two, and then the quality for the degree that can recline between accurate judgement electrode band 2 and lesion tissue 12, with
Just adjustment in time.
Again as shown in Figures 2 and 3, the first temperature sensor 4 is equipped on the inside of electrode band 2, specifically: as shown in figure 4, this
One temperature sensor 4 is arranged by insulating component layer 5 is additionally provided with second temperature sensing on 2 inside of electrode band, insulating component layer 5
Device can be avoided so as to the temperature of the real-time detection insulating component layer 5 and cause security risk because temperature is excessively high.
In the present embodiment, as shown in fig. 6, above-mentioned first temperature sensor 4 is the first heat that 2 inside of electrode band is arranged in
Electrode 6 reduces the quantity of conducting wire in this way, and using the miniaturization of mesh basket shape ablation catheter, and first thermode 6 is constantan
Line, constantan line has lower temperature-coefficient of electrical resistance, wider use temperature range, therefore the first thermode 6 is selected as constantan
Line not only facilitates the precision for improving 4 thermometric of the first temperature sensor, and also ensures wider use temperature model
It encloses.
Above-mentioned 2 surface of electrode band is equipped with insulating layer；In the same electrode group, two neighboring electrode band 2 is arranged in parallel,
Short circuit can occur because touching to avoid between two neighboring electrode band 2 to a certain extent, further improve the ablation of mesh basket shape
The safety coefficient of conduit；More importantly each electrode band 2 is connected with independent conducting wire, so that each electrode band 2 can
Mapping is carried out, electricity physiological signal can be independently extracted.
In the present embodiment, above-mentioned tubular body 3 is to use made of plastic material, PEBAX, polyurethane or nylon material, with
Guarantee that tube body 3 has good rebound and elastic recovery capability, facilitates the use of mesh basket shape ablation catheter to a certain extent.
Embodiment 2
A kind of mesh basket shape ablating electrode is present embodiments provided, the structure and embodiment 1 of the mesh basket shape ablating electrode provide
The structure of mesh basket shape ablating electrode be substantially the same, difference between the two is:
As shown in fig. 7, above-mentioned first temperature sensor 4 includes the second thermode 7 interconnected and third thermode 8,
And the setting of the tie point of second thermode 7 and third thermode 8 is in 2 inside of electrode band；Wherein, in the present embodiment, second
Thermode 7 and third thermode 8 are respectively constantan line and copper wire, have biggish thermo-electromotive force between constantan line and copper wire, this
The design of sample can guarantee the measurement accuracy with higher of the first temperature sensor 4.
In addition, in above-mentioned electrode section, including the first conducting wire, all radio-frequency transmissions electrode bands with first conducting wire
Electrical connection, radio frequency reception electrode band are respectively equipped with individual conducting wire, reduce the use to conducting wire in this way, save tube body 3
Space is additionally favorable for the miniaturization of tube body 3.
Embodiment 3
A kind of mesh basket shape ablating electrode is present embodiments provided, the structure and embodiment 1 of the mesh basket shape ablating electrode provide
The structure of mesh basket shape ablating electrode be substantially the same, difference between the two is:
As shown in figure 8, above-mentioned first temperature sensor 4 includes the 4th thermode 9 and the 5th thermode 10, the 4th thermoelectricity
Pole 9 and the 5th thermode 10 are electrically connected with the inside of the same electrode band 2, and the set-point and the 5th of the 4th thermode 9
Spacing is equipped between the set-point of thermode 10, which is 1 ~ 4mm, it both ensure that bigger temperature sense region in this way,
And also assure relatively good temperature measurement accuracy, if the spacing is less than 1mm, then temperature sense region is too small, Bu Nengman
The sufficient biggish lesion tissue of area, if the spacing is greater than 4mm, then the temperature measurement accuracy of first temperature sensor 4 can be big
Width reduces, and has violated the original intention of the first temperature sensor 4 of setting.
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 wire,
Help to improve the measurement accuracy of the first temperature sensor 4.
In addition, further include the second conducting wire in above-mentioned electrode section, all radio frequency reception electrode bands second are led with this
Line electrical connection, reduces the use to conducting wire, saves the inner space of tube body 3, in this way conducive to the miniaturization of tube body 3.
Embodiment 4
A kind of ablating device is present embodiments provided, which includes radio frequency source and the mesh basket adjacent with the radio frequency source
Shape ablation catheter, the structure of the mesh basket shape ablation catheter and the mesh basket shape in above-described embodiment 1, embodiment 2 or embodiment 3 melt
The structure of conduit is identical.
Ablating device provided in this embodiment is able to carry out depth ablation and the ablation of targeted superficial, 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 additional mapping catheter, significantly reduce the pain of patient, also reduce
Medical expense, safety, high reliablity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of mesh basket shape ablation catheter, including electrode section, which is characterized in that the electrode section is in mesh basket shape, and described
Electrode section includes traction fiber and the multiple electrodes group circumferentially distributed along the traction fiber, and the electrode group includes at least two
Electrode band；
In the same electrode group, two neighboring electrode band is arranged in parallel；
The electrode band includes radio-frequency transmissions electrode band and radio frequency reception electrode band；
Including the first conducting wire, the radio-frequency transmissions electrode band is electrically connected with the first conducting wire；
Including the second conducting wire, the radio frequency reception electrode band is electrically connected with the second conducting wire.
2. mesh basket shape ablation catheter according to claim 1, which is characterized in that further include tube body, the electrode group it is close
End is connected with tube body, and the distal end of the electrode group is connected with the distal end of traction fiber, and the proximal end of the traction fiber is threaded through institute
State the shape of tubular body and coordination electrode part.
3. mesh basket shape ablation catheter according to claim 1, which is characterized in that be equipped with the first temperature on the inside of the electrode band
Sensor.
4. mesh basket shape ablation catheter according to claim 3, which is characterized in that first temperature sensor passes through insulation
Components layer is arranged on the inside of electrode band.
5. mesh basket shape ablation catheter according to claim 3, which is characterized in that first temperature sensor be with it is described
First thermode of electrode band electrical connection.
6. mesh basket shape ablation catheter according to claim 3, which is characterized in that first temperature sensor includes mutual
The second thermode and third thermode of connection, and the tie point of second thermode and third thermode is arranged in the electricity
On the inside of the band of pole.
7. mesh basket shape ablation catheter according to claim 3, which is characterized in that first temperature sensor includes the 4th
Thermode and the 5th thermode, the 4th thermode and the 5th thermode are electrically connected with the inside of the same electrode band, and
Spacing is equipped between the set-point of 4th thermode and the set-point of the 5th thermode.
8. mesh basket shape ablation catheter according to claim 1, which is characterized in that the electrode belt surface is equipped with insulating layer.
9. a kind of ablating device, which is characterized in that including in radio frequency source and the claims being connected with the radio frequency source 1 ~ 8
Mesh basket shape ablation catheter described in 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 |
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| 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 |
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| CN107440787A CN107440787A (en) | 2017-12-08 |
| CN107440787B true CN107440787B (en) | 2019-09-03 |
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| WO (1) | WO2017206266A1 (en) |
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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 |
| CN113545840B (en) * | 2021-07-12 | 2022-11-01 | 心航路医学科技(广州)有限公司 | Basket-shaped electrode |
| CN114917021B (en) * | 2022-06-06 | 2022-12-23 | 深圳北芯医疗科技有限公司 | Electrophysiology 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 |
| 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 |
| 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 |
| CN105451680A (en) * | 2013-08-09 | 2016-03-30 | 波士顿科学国际有限公司 | Expandable catheter and related methods of manufacture and use |
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| WO2011037621A2 (en) * | 2009-09-22 | 2011-03-31 | Mederi Therapeutics Inc. | Systems and methods for controlling use and operation of a family of different treatment devices |
| US20140025069A1 (en) * | 2012-07-17 | 2014-01-23 | Boston Scientific Scimed, Inc. | Renal nerve modulation catheter design |
| US20140188103A1 (en) * | 2012-12-31 | 2014-07-03 | Volcano Corporation | Methods and Apparatus for Neuromodulation Utilizing Optical-Acoustic Sensors |
| EP3417821B1 (en) * | 2013-10-28 | 2021-06-30 | St. Jude Medical, Cardiology Division, Inc. | Ablation catheter designs with enhanced diagnostic capabilities |
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- 2016-06-01 CN CN201610383799.6A patent/CN107440787B/en active Active
- 2016-07-07 WO PCT/CN2016/089275 patent/WO2017206266A1/en active Application Filing
Patent Citations (5)
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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 |
| 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 |
| CN105451680A (en) * | 2013-08-09 | 2016-03-30 | 波士顿科学国际有限公司 | Expandable catheter and related methods of manufacture and use |
| 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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| CN107440787A (en) | 2017-12-08 |
| WO2017206266A1 (en) | 2017-12-07 |
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