CN105935314B - A kind of radio frequency ablation catheter with multiple spot mapping function - Google Patents
A kind of radio frequency ablation catheter with multiple spot mapping function Download PDFInfo
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- 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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- 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
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
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- A—HUMAN NECESSITIES
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0108—Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers
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- A—HUMAN NECESSITIES
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- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
- A61M2210/125—Heart
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Abstract
The present invention relates to medical instrument art field, specifically a kind of radio frequency ablation catheter with multiple spot mapping function, including a RF ablation main pipe and at least one mapping brasnch conduct；The RF ablation main pipe distal end is adjustable curved segment, and curved segment that this is adjustable carries out camber adjusting by catheter manipulation handle；The adjustable curved segment of the RF ablation main pipe is divided into tail portion, middle part and head, and the head is equipped with main pipe ring electrode, and the top on the head is equipped with main pipe termination electrode；The outer diameter of the outer diameter and tail portion on the heads outer diameter ＜ at the middle part.The invention has the advantages that can not only provide radio-frequency current implements ablation, and it can be easily carried out at the same time multiple spot high density mapping, be not only able to reduce the quantity using conduit and replace number, improve working efficiency, and surgery cost can be greatlyd save.
Description
Technical field
The present invention relates to medical instrument art field, specifically a kind of radio frequency ablation catheter with multiple spot mapping function.
Background technology
Radio frequency ablation catheter is widely used in medical practice at present, and main application is in arrhythmia cordis such as heart atrial fibrillations
The ablation of disease.Its application method is that electrophysiologicalcatheter catheter is inserted into heart by femoral artery puncture under the auxiliary of X-ray machine,
Stimulation or a mapping electrocardiosignal are carried out, arrhythmia cordis lesion type is differentiated, it is different that heart is then found by radio frequency ablation catheter
The position of normal electrical activity carries out RF ablation.
The ablation catheter for being clinically used for arrhythmia cordis RF ablation at present does not all have multiple spot high density mapping function, also
I.e. conventional mapping when using conventional mapping catheter, when high density mapping, uses multipole high density mapping catheter, using disappearing when ablation
Melt conduit.In atrial fibrillation ablation, it is especially desirable to could realize high density mapping using multipole mapping catheter.Current highly dense scale
Surveying conduit has annular mapping catheter (Lasso conduits), mesh basket shape mapping catheter (the small basket catheter of Bo Ke companies) and starlike branch
Mapping catheter (Johson ＆ Johnson's PENTARAY Nav eco conduits).But they are the conduits of only mapping function, without having
There is electric discharge ablation functionality.Can not achieve high density mapping with ablation a pipeization and disposably.Atrial fibrillation is completed using two conduits
While the defect of ablation is to increase surgical operation step, necessarily increases conduit usage quantity and replace number, increase medical treatment
Expense.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can not only easily carrying out multiple spot high density
Mapping, while having and providing radio-frequency current implementation ablation, reach and reduce quantity and number using conduit, improve working efficiency,
And then the radio frequency ablation catheter with multiple spot mapping function of surgery cost is greatly saved.
Another object of the present invention is to overcome to stretch into multiple existing, independent mapping catheters simultaneously and visited
The drawbacks of survey.
Another object of the present invention is to by rationally cleverly arrangement mode, can reach meeting current material
Caliber size, and can avoid simultaneously each RF ablation main pipe and survey brasnch conduct respectively work do not interfere with each other, shadow
Operation is rung, under the premise of ensureing to perform the operation normal implement, multiple RF ablation main pipes is sent into heart and survey brasnch conduct.
In order to achieve the above object, the present invention provides a kind of radio frequency ablation catheters with multiple spot mapping function, including
One RF ablation main pipe and at least one mapping brasnch conduct；
The RF ablation main pipe distal end is adjustable curved segment, and curved segment that this is adjustable carries out camber by catheter manipulation handle
It adjusts；
The adjustable curved segment of the RF ablation main pipe is divided into tail portion, middle part and head, and the head is equipped with master
The top of conduit ring electrode, the head is equipped with main pipe termination electrode；
The outer diameter of the outer diameter and tail portion on the heads outer diameter ＜ at the middle part；
The mapping brasnch conduct from the middle part of the adjustable curved segment of RF ablation main pipe stretch out and with adjustable curved segment shape
At forked, each mapping brasnch conduct is equipped with brasnch conduct ring electrode, and the top of each mapping brasnch conduct is equipped with branch
Catheter tip electrode is protected between the main pipe ring electrode, main pipe termination electrode on the mapping brasnch conduct and RF ablation main pipe
Hold distance.
The mapping brasnch conduct overlaps the middle part, i.e. the length of mapping brasnch conduct≤RF ablation main pipe
The length at middle part.The termination electrode on the head of the RF ablation main pipe is ablating electrode.
Preferably, the distance >=5mm.The effect of regulated power in RF ablation main pipe distal end and bend
When, mapping brasnch conduct and main pipe ring electrode, the main pipe termination electrode of RF ablation main pipe are at least kept at a distance from 5mm,
Operation is set to be smoothed out.
Further, the brasnch conduct ring electrode of the mapping brasnch conduct, brasnch conduct termination electrode and RF ablation
At least distance of 5mm is kept between main pipe ring electrode, main pipe termination electrode on main pipe when spatial position changes.
The effect of regulated power in RF ablation main pipe distal end and when bending, the brasnch conduct ring electricity of mapping brasnch conduct
Pole, brasnch conduct termination electrode and RF ablation main pipe main pipe ring electrode, main pipe termination electrode at least keep 5mm away from
From making operation be smoothed out.
Preferably, the outer diameter of the outer diameter≤tail portion on the head of the adjustable curved segment of RF ablation main pipe.
Preferably, the number of the mapping brasnch conduct is 2-4.
Further, the number of the mapping brasnch conduct is two, and the axle center of the two mapping brasnch conducts is linear
At angle α, the angle of α is 90 °, and the axial line of the two mapping brasnch conducts is linear with the axle center of RF ablation main pipe respectively
At angle β, the angle of β is 45 °.
Further, it is 22.5 ° -180 ° that the axial line of the adjacent mapping brasnch conduct, which forms angular range, respectively
It is 30 ° -90 ° that the axial line of mapping brasnch conduct forms angular range with the axial line of RF ablation main pipe.
Further, the stretching point of the mapping brasnch conduct is located in the adjustable curved segment of RF ablation main pipe
On the same sagittal plane in portion.
Further, the stretching point of the mapping brasnch conduct is at the middle part of the adjustable curved segment of RF ablation main pipe
Axial direction helically line be distributed.
Preferably, tail portion outer diameter≤8F of the adjustable curved segment of the RF ablation main pipe distal end, middle part outer diameter≤6F,
Head outer diameter≤8F；
The length of the mapping brasnch conduct is 1-2cm, and the number of outer diameter 1-2F, brasnch conduct ring electrode are 2-4,
The pole span of each brasnch conduct ring electrode is 1-2mm, and the interpolar of each brasnch conduct ring electrode is away from for 2-6mm, the mapping brasnch conduct
The number of top set's catheter tip electrode is 1；
Outer diameter summation≤the 8F at the middle part and mapping brasnch conduct.
The F is common length unit.
Preferably, the mapping brasnch conduct is equipped with x-ray witness marker.X-ray positioning on each mapping brasnch conduct
Mark can differentiate the spatial position residing for different mapping brasnch conducts with this on different positions.
The invention has the advantages that multiple spot high density mapping can not only be carried out easily, while there is granting radio frequency electrical
Stream implements ablation；It is not only able to reduce the quantity using conduit and replaces number, improve working efficiency, and can greatly save
Surgery cost.The technical solution adopted by the present invention to solve the technical problems is：Retain the existing common cold salt of ablating electrode conduit
Water perfusion functional, the ablating electrode of distal end and the first ring electrode cancel the second ring electrode and third ring electrode.Ablation catheter is made
Soft mapping brasnch conduct is set as branch electrodes conduit in the nearside of ablation main pipe ring electrode for main pipe.Each mark
Surveying brasnch conduct can stretch out from the same sagittal plane of RF ablation main pipe, can also be stretched out from different sagittal planes, full
Foot is used for the different demands of different operation plans.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structural schematic diagram of embodiment 2；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the structural schematic diagram of embodiment 3；
Fig. 6 is the structural schematic diagram of embodiment 4；
Fig. 7 is the structural schematic diagram of embodiment 5；
Fig. 8 is the structural schematic diagram of embodiment 6；
Fig. 9 is the structural schematic diagram of embodiment 7.
Wherein：
In the middle part of 1- RF ablation main pipe 11- tail portion 12-
The heads 13- 14- main pipe ring electrode 15- main pipe termination electrodes
2- mapping brasnch conduct 21- brasnch conduct ring electrode 22- brasnch conduct termination electrodes
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1：
A kind of radio frequency ablation catheter with multiple spot mapping function as shown in Figure 1, 2, including a RF ablation are leading
Pipe 1 and two mapping brasnch conducts 2；
1 distal end of RF ablation main pipe is adjustable curved segment, and curved segment that this is adjustable is carried out curved by catheter manipulation handle
Degree is adjusted；
The adjustable curved segment of the RF ablation main pipe 1 is divided into tail portion 11, middle part 12 and head 13, the head 13
It is equipped with main pipe ring electrode 14, the top on the head 13 is equipped with main pipe termination electrode 15；
The outer diameter of the outer diameter and tail portion 11 on the heads outer diameter ＜ 13 at the middle part 12.
The mapping brasnch conduct 2 is stretched out from the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe and and adjustable bending
Section forms forked, and the stretching point of mapping brasnch conduct 2 is positioned at the same of the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe
On one sagittal plane.
The mapping brasnch conduct 2 overlaps 12 sections of the middle part, i.e. length≤RF ablation of mapping brasnch conduct 2 is leading
The length at the middle part 12 of pipe 1.The length of each mapping brasnch conduct 2 is 2cm, outer diameter 2F.The RF ablation main pipe 1
Outer diameter summation≤the 8F at middle part 12 and mapping brasnch conduct 2.The axial line of the two mapping brasnch conducts 2 forms angle α, α's
Angle is 90 °, and the axial line of the two mapping brasnch conducts 2 forms angle β, β with the axial line of RF ablation main pipe 1 respectively
Angle be 45 °.
Each mapping brasnch conduct 2 is equipped with brasnch conduct ring electrode 21, the electrode pole of the brasnch conduct ring electrode 21
Away from for 2mm, the interpolar of contiguous branch conduit ring electrode 21 is away from for 5mm on each mapping brasnch conduct 2.Each mapping brasnch conduct
2 top is equipped with brasnch conduct termination electrode 22.
The mapping brasnch conduct 2 and main pipe ring electrode 14, the main pipe termination electrode 15 of RF ablation main pipe 1 are kept
The distance of 6mm.I.e. when the effect of the 1 regulated power in distal end of RF ablation main pipe bends, mapping brasnch conduct 2
Brasnch conduct ring electrode 21, brasnch conduct termination electrode 22 and main pipe ring electrode 14, the leading pipe end on RF ablation main pipe 1
Electrode 15 at least keeps the distance of 6mm.
The mapping brasnch conduct 2 is equipped with x-ray witness marker, is not marked on figure.X-ray on each mapping brasnch conduct
Witness marker can differentiate the spatial position residing for different mapping brasnch conducts with this on different positions.
Embodiment 2：
Radio frequency ablation catheter with multiple spot mapping function as shown in Figure 3,4, including 1 He of RF ablation main pipe
One mapping brasnch conduct 2；
1 distal end of RF ablation main pipe is adjustable curved segment, and curved segment that this is adjustable is carried out curved by catheter manipulation handle
Degree is adjusted；
The adjustable curved segment of the RF ablation main pipe 1 is divided into tail portion 11, middle part 12 and head 13, the head 13
It is equipped with main pipe ring electrode 14, the top on the head 13 is equipped with main pipe termination electrode 15；
The outer diameter of the outer diameter and tail portion 11 on the heads outer diameter ＜ 13 at the middle part 12；
The outer diameter of tail portion 11 is 8F in the 1 adjustable curved segment of RF ablation main pipe, the outer diameter at middle part 12 is 6F, head
13 outer diameters are 7F.
The mapping brasnch conduct 2 is stretched out from the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe and and adjustable bending
Section forms forked, and the mapping brasnch conduct 2 overlaps 12 sections of the middle part, i.e. length≤radio frequency of mapping brasnch conduct 2 disappears
Melt the length at the middle part 12 of main pipe 1.The length of the mapping brasnch conduct 2 is 2cm, outer diameter 2F.The RF ablation master
The stage casing of conduit 1 and outer diameter summation≤8F of mapping brasnch conduct 2.
Mapping brasnch conduct 2 is equipped with brasnch conduct ring electrode 21, is highly 1mm, contiguous branch conduit ring electrode 21
Interpolar is away from for 4mm.The top of each mapping brasnch conduct 2 is equipped with brasnch conduct termination electrode 22.
Brasnch conduct ring electrode 21, brasnch conduct termination electrode 22 and the RF ablation main pipe 1 of the mapping brasnch conduct 2
6mm distances are kept between main pipe ring electrode 14, main pipe termination electrode 15.In the 1 regulated power in distal end of RF ablation main pipe
Effect and when bending, brasnch conduct ring electrode 21, brasnch conduct termination electrode 22 and the RF ablation of mapping brasnch conduct 2
Ring electrode 14, termination electrode 15 on main pipe 1 at least keep the distance of 6mm in arbitrary spatial position.
The mapping brasnch conduct 2 is equipped with x-ray witness marker, is not marked on figure.X-ray on each mapping brasnch conduct
Witness marker can differentiate the spatial position residing for different mapping brasnch conducts with this on different positions.
Embodiment 3：
Radio frequency ablation catheter with multiple spot mapping function as shown in Figure 5, including a RF ablation main pipe 1 and three
A mapping brasnch conduct 2；
1 distal end of RF ablation main pipe is adjustable curved segment, and curved segment that this is adjustable is carried out curved by catheter manipulation handle
Degree is adjusted；
The adjustable curved segment of the RF ablation main pipe 1 is divided into tail portion 11, middle part 12 and head 13, the head 13
It is equipped with main pipe ring electrode 14, the top on the head 13 is equipped with main pipe termination electrode 15；
The outer diameter of the outer diameter and tail portion 11 on the heads outer diameter ＜ 13 at the middle part 12；
The mapping brasnch conduct 2 is stretched out from the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe and and adjustable bending
Section forms forked, stretches out point on the same sagittal plane at the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe, penetrates
Outer diameter summation≤the 8F at the middle part 12 and mapping brasnch conduct 2 of frequency ablation main pipe 1.The axle center of adjacent mapping brasnch conduct 2
The folder that line is formed is 22.5 °, and the axial line of the axial line of each mapping brasnch conduct 2 respectively with RF ablation main pipe 1 is formed
Angle be 45 °.
Each mapping brasnch conduct 2 is equipped with brasnch conduct ring electrode 21, the electrode pole of the brasnch conduct ring electrode 21
Away from for 2mm, the interpolar of adjacent brasnch conduct termination electrode 21 is away from for 5mm on each mapping brasnch conduct 2.Each mapping branch leads
The top of pipe 2 is equipped with brasnch conduct termination electrode 22.
Brasnch conduct ring electrode 21, brasnch conduct termination electrode 22 and the RF ablation main pipe 1 of the mapping brasnch conduct 2
Main pipe ring electrode 14,6mm distances are kept between main pipe termination electrode 15.It is regulated in 1 distal end of RF ablation main pipe
The effect of power and when bending, brasnch conduct ring electrode 21, the brasnch conduct termination electrode 22 of mapping brasnch conduct 2 disappear with radio frequency
Melt the distance that the ring electrode 14 on main pipe 1, termination electrode 15 at least keep 6mm in arbitrary spatial position.
The mapping brasnch conduct 2 is equipped with x-ray witness marker, is not marked on figure.X-ray on each mapping brasnch conduct
Witness marker can differentiate the spatial position residing for different mapping brasnch conducts with this on different positions.
Embodiment 4：
Remaining is the same as embodiment 3, the radio frequency ablation catheter as shown in FIG. 6 with multiple spot mapping function, including a radio frequency
Main pipe 1 and three mapping brasnch conducts 2 are melted, wherein the mapping brasnch conduct 2 is by 1 distal end of RF ablation main pipe
The middle part 12 of adjustable curved segment is stretched out, and the stretching point can be from the difference at the middle part 12 of 1 adjustable curved segment of RF ablation main pipe
It is stretched out on sagittal plane.
Embodiment 5：
Radio frequency ablation catheter with multiple spot mapping function as shown in Figure 7, including a RF ablation main pipe 1 and four
A mapping brasnch conduct 2；
1 distal end of RF ablation main pipe is adjustable curved segment, and curved segment that this is adjustable is carried out curved by catheter manipulation handle
Degree is adjusted；
The adjustable curved segment of the RF ablation main pipe 1 is divided into tail portion 11, middle part 12 and head 13, the head 13
It is equipped with ring electrode 14, the top on the head 13 is equipped with main pipe termination electrode 15；
The outer diameter of the outer diameter and tail portion 11 on the heads outer diameter ＜ 13 at the middle part 12；
The mapping brasnch conduct 2 is stretched out from the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe and and adjustable bending
Section forms forked, stretches out point on the same sagittal plane at the middle part 12 of 1 adjustable curved segment of the RF ablation main pipe.Institute
It states mapping brasnch conduct 2 and overlaps 12 sections of the middle part, the i.e. middle part of the length of mapping brasnch conduct 2≤RF ablation main pipe 1
12 length, the middle part of the RF ablation main pipe 1 and outer diameter summation≤8F of 2 overlay segment of mapping brasnch conduct.Each mark
The length for surveying brasnch conduct 2 is 2cm.
The angle that the axial line of adjacent mapping brasnch conduct 2 is formed is 45 °, the axial line point of each mapping brasnch conduct 2
The angle not formed with the axial line of RF ablation main pipe 1 is 45 °.
Each mapping brasnch conduct 2 is equipped with brasnch conduct ring electrode 21, and the top of each mapping brasnch conduct 2, which is equipped with, to be divided
Branch catheter tip electrode 22.
Brasnch conduct ring electrode 21, brasnch conduct termination electrode 22 and the RF ablation main pipe 1 of the mapping brasnch conduct 2
Main pipe ring electrode 14,6mm distances are kept between main pipe termination electrode 15.It is regulated in 1 distal end of RF ablation main pipe
The effect of power and when bending, brasnch conduct ring electrode 21, the brasnch conduct termination electrode 22 of mapping brasnch conduct 2 disappear with radio frequency
Melt the distance that the ring electrode 14 on main pipe 1, termination electrode 15 at least keep 6mm in arbitrary spatial position.
The mapping brasnch conduct 2 is equipped with x-ray witness marker, is not marked on figure.X-ray on each mapping brasnch conduct
Witness marker can differentiate the spatial position residing for different mapping brasnch conducts with this on different positions.
Embodiment 6：
Remaining is the same as embodiment 5, the radio frequency ablation catheter with multiple spot mapping function as shown in Figure 7, including a radio frequency
Main pipe 1 and four mapping brasnch conducts 2 are melted, wherein the mapping brasnch conduct 2 is by 1 distal end of RF ablation main pipe
The middle part 12 of adjustable curved segment is stretched out, and the stretching point can be from the difference at the middle part 12 of 1 adjustable curved segment of RF ablation main pipe
Stretched out on sagittal plane, can also as illustrated in the drawing two mapping brasnch conducts 2 from the middle part of RF ablation main pipe 1 12
It is stretched out on one sagittal plane, another two mapping brasnch conducts 2 are from the another sagittal plane at the middle part of RF ablation main pipe 1 12
It stretches out.
Embodiment 7：
Remaining is the same as embodiment 5, the radio frequency ablation catheter with multiple spot mapping function as shown in Figure 8, including a radio frequency
Main pipe 1 and four mapping brasnch conducts 2 are melted, wherein the mapping brasnch conduct 2 is by 1 distal end of RF ablation main pipe
The middle part 12 of adjustable curved segment is stretched out, and the stretching point of mapping brasnch conduct 2 is in 1 adjustable curved segment of the RF ablation main pipe
Helically line is distributed the axial direction in portion 12.
The preferred embodiment of the invention is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various etc. under the premise of without prejudice to the invention spirit
Same modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of radio frequency ablation catheter with multiple spot mapping function, which is characterized in that including a RF ablation main pipe (1)
With at least one mapping brasnch conduct (2)；
The RF ablation main pipe (1) is distally adjustable curved segment, and curved segment that this is adjustable carries out camber by catheter manipulation handle
It adjusts；
The adjustable curved segment of the RF ablation main pipe (1) is divided into tail portion (11), middle part (12) and head (13), the head
Portion (13) is equipped with main pipe ring electrode (14), and the top on the head (13) is equipped with main pipe termination electrode (15)；
The outer diameter of the outer diameter and tail portion (11) on the heads outer diameter ＜ (13) of the middle part (12)；
The mapping brasnch conduct (2) from the middle part (12) of the adjustable curved segment of the RF ablation main pipe (1) stretch out and with it is adjustable
Curved segment forms forked, and each mapping brasnch conduct (2) is equipped with brasnch conduct ring electrode (21), each mapping brasnch conduct
(2) top is equipped with brasnch conduct termination electrode (22), the mapping brasnch conduct (2) and dominating on RF ablation main pipe (1)
Pipe ring electrode (14), main pipe termination electrode are kept at a distance between (15).
2. the radio frequency ablation catheter according to claim 1 with multiple spot mapping function, which is characterized in that the distance
≥5mm。
3. the radio frequency ablation catheter according to claim 1 with multiple spot mapping function, which is characterized in that the radio frequency
Melt the outer diameter of the outer diameter≤tail portion (11) on the head (13) of main pipe (1) adjustable curved segment.
4. the radio frequency ablation catheter according to claim 1 with multiple spot mapping function, which is characterized in that the mapping
The number of brasnch conduct (2) is 2-4.
5. the radio frequency ablation catheter according to claim 4 with multiple spot mapping function, which is characterized in that the mapping
The number of brasnch conduct (2) is two, and the axial line of the two mapping brasnch conducts (2) forms angle α, and the angle of α is 90 °,
The axial line of the two mapping brasnch conducts (2) forms the angle of angle β, β with the axial line of RF ablation main pipe (1) respectively
It is 45 °.
6. the radio frequency ablation catheter according to claim 4 with multiple spot mapping function, which is characterized in that described is adjacent
The axial line of mapping brasnch conduct (2) form ranging from 22.5 ° -180 ° of angle, the axial line of each mapping brasnch conduct (2)
Ranging from 30 ° -90 ° of angle are formed with the axial line of RF ablation main pipe (1).
7. the radio frequency ablation catheter according to claim 4 with multiple spot mapping function, which is characterized in that the mapping
The stretching point of brasnch conduct (2) is located at the same sagittal plane at the middle part (12) of the adjustable curved segment of the RF ablation main pipe (1)
On.
8. the radio frequency ablation catheter according to claim 4 with multiple spot mapping function, which is characterized in that the mapping
Axial direction helically line minute of the stretching point of brasnch conduct (2) at the middle part (12) of the adjustable curved segment of the RF ablation main pipe (1)
Cloth.
9. the radio frequency ablation catheter according to claim 1 with multiple spot mapping function, which is characterized in that the radio frequency
Melt tail portion (11) outer diameter≤8F, middle part (12) outer diameter≤6F, head (13) outer diameter≤8F of main pipe (1)；
The length of the mapping brasnch conduct (2) is 1-2cm, and the number of outer diameter 1-2F, brasnch conduct ring electrode (21) are 2-4
A, the pole span of each brasnch conduct ring electrode (21) is 1-2mm, and the interpolar of each brasnch conduct electrode (21) is away from for 2-6mm, the mapping
The number of brasnch conduct (2) top set's catheter tip electrode (22) is 1；
The outer diameter at the middle part (12) of the RF ablation main pipe (1) and outer diameter summation≤8F of mapping brasnch conduct (2).
10. the radio frequency ablation catheter according to claim 1 with multiple spot mapping function, which is characterized in that the mark
It surveys brasnch conduct (2) and is equipped with x-ray witness marker.
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| WO2018081323A1 (en) * | 2016-10-26 | 2018-05-03 | Boston Scientific Scimed Inc. | Stenosis prevention and ablation delivery system |
| CN110960314B (en) * | 2019-12-31 | 2021-06-15 | 杭州堃博生物科技有限公司 | Detection mechanism, radiofrequency ablation catheter and radiofrequency ablation system |
| CN113967065B (en) * | 2021-06-23 | 2023-08-11 | 四川锦江电子医疗器械科技股份有限公司 | Pulse electric field ablation catheter capable of entering inside tissues |
| CN114145840B (en) * | 2021-12-03 | 2024-01-02 | 陕西省中医医院 | Intracardiac ultrasonic catheter with ablation and mapping functions |
| CN116616891A (en) * | 2023-06-13 | 2023-08-22 | 上海玮启医疗器械有限公司 | Ablation catheter and ablation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5454370A (en) * | 1993-12-03 | 1995-10-03 | Avitall; Boaz | Mapping and ablation electrode configuration |
| US6033403A (en) * | 1998-10-08 | 2000-03-07 | Irvine Biomedical, Inc. | Long electrode catheter system and methods thereof |
| CN200954136Y (en) * | 2006-10-19 | 2007-10-03 | 成正辉 | Rail radiofrequency melting catheter device |
| US9314299B2 (en) * | 2012-03-21 | 2016-04-19 | Biosense Webster (Israel) Ltd. | Flower catheter for mapping and ablating veinous and other tubular locations |
| CN202776301U (en) * | 2012-08-07 | 2013-03-13 | 深圳市惠泰医疗器械有限公司 | Multifunctional mapping guide tube |
| US8612022B1 (en) * | 2012-09-13 | 2013-12-17 | Invatec S.P.A. | Neuromodulation catheters and associated systems and methods |
| CN204951145U (en) * | 2015-07-17 | 2016-01-13 | 上海微创电生理医疗科技有限公司 | Electroproduction reason pipe |
| CN205947854U (en) * | 2016-06-17 | 2017-02-15 | 赵学 | Radiofrequency ablation catheter with multiple spot mark measurement of power ability |
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