CN104207840A - Magnetism navigation radiofrequency ablation catheter - Google Patents
Magnetism navigation radiofrequency ablation catheter Download PDFInfo
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- CN104207840A CN104207840A CN201310210360.XA CN201310210360A CN104207840A CN 104207840 A CN104207840 A CN 104207840A CN 201310210360 A CN201310210360 A CN 201310210360A CN 104207840 A CN104207840 A CN 104207840A
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- magnetic sensor
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- radio frequency
- ablation catheter
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Abstract
The invention relates to the field of active medical apparatuses and instruments, in particular to a magnetism navigation radiofrequency ablation catheter which comprises a near-end connector, a main pipe, a far-end gradual-change soft pipe and a far-end ablation part. One end of the main pipe is connected with the near-end connector. The other end of the main pipe is connected with the far-end gradual-change soft pipe. One end of the far-end gradual-change soft pipe is connected with the far-end ablation part which comprises an ablation heat electrode and a plurality of ablation annular electrodes. The ablation annular electrodes are distributed at one end of the ablation heat electrode at intervals in the length direction of the ablation part. A first magnetic sensor is embedded in the far-end ablation part. A first sleeve pipe made of insulation materials is wrapped outside the magnetic sensor. The magnetism navigation radiofrequency ablation catheter can be matched with a magnetism navigation robot so that a doctor can carry out remote control or even long-distance control, the doctor is far away from irradiation of X rays, myocardium hole punching can be effectively lowered, operation time is shortened, and operation risks are lowered.
Description
Technical field
The present invention relates to active medical instrument field, particularly relate to a kind of radio frequency ablation catheter on magnetic navigation robot device.
Background technology
Radio frequency ablation catheter has been widely used in medical practice at present, and it is mainly used in the treatment of the diseases such as heart atrial fibrillation, arrhythmia.Its using method be X-ray machine auxiliary under by electrophysiologicalcatheter catheter being inserted heart by blood vessel at femoral artery or radial artery puncturing, and carry out point stimulation, carry out the mapping signal of telecommunication aroused in interest, differentiate heart change type, then find the position of heart abnormality electrical activity to carry out radio-frequency (RF) ablation by radio frequency ablation catheter.
Current this ablative surgery is completed by experienced doctor's manual operation, but because doctor will do a large amount of operations in its career, such X-ray will very large to the injury of doctor, so in the market in the urgent need to a kind of method that doctor can be made to avoid x-ray bombardment.
Many scientists of the current world are in research magnetic navigation technology, and this kind ofly controls to change the curved method of conduit with Magnetic Sensor conduit head end bends by external magnetic field.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of by external magnetic field control change the curved magnetic navigation radio frequency ablation catheter of conduit with Magnetic Sensor conduit head end bends.
(2) technical scheme
For solving the problem, the invention provides a kind of magnetic navigation radio frequency ablation catheter, comprising proximal connector, supervisor, far-end gradual change flexible pipe and distal ablation part;
One end of described supervisor connects proximal connector, and its other end connects far-end gradual change flexible pipe, and one end of described far-end gradual change flexible pipe connects distal ablation part;
The described part that melts comprises and melts tip electrode and multiplely melt annular electrode, and described multiple annular electrode that melts is distributed in the one end of melting tip electrode along melting partial-length direction;
Described distal ablation partial interior inlays the first Magnetic Sensor, the first sleeve pipe that described Magnetic Sensor outer wrapping insulant is made.
Preferably, the quantity of described tip electrode is one, and described tip electrode is hollow structure, and end is provided with boss;
The described quantity melting annular electrode is three.
Preferably, temperature sensor is inlayed on described tip electrode inner surface top.
Preferably, described first Magnetic Sensor is circular hollow structure, and ring wall side has three perforates, and the diameter of described perforate is less than and melts 1/3 of annular electrode width.
Preferably, described tip electrode is provided with electrode cable, and described electrode cable is connected on adapter through Magnetic Sensor hollow space;
The position described sleeve pipe corresponding to perforate is provided with hole, and described three ring electrodes connecting ring electrode cable respectively, described ring electrode wire is connected on adapter through Magnetic Sensor hollow space by hole and perforate.
Preferably, the Magnetic Sensor that on described far-end gradual change flexible pipe, two structures spaced apart are identical, specifically comprises near the second Magnetic Sensor of distal ablation part and the 3rd Magnetic Sensor away from distal ablation part; The second sleeve pipe that described second Magnetic Sensor and the 3rd outer cladding insulant are made.
Preferably, described far-end gradual change flexible pipe is welded by the tubing of different soft and hard degree and different size along its length.
Preferably, the caliber of described far-end gradual change flexible pipe part between the second Magnetic Sensor and the 3rd Magnetic Sensor is wider than the caliber between the second Magnetic Sensor and distal ablation part.
Preferably, the caliber of described far-end gradual change flexible pipe part between supervisor and the 3rd Magnetic Sensor is wider than the caliber between the 3rd Magnetic Sensor and the second Magnetic Sensor.
Preferably, in described far-end gradual change flexible pipe, stay pipe is set; Described supervisor is the braided tube be made up of rustless steel braided wires.
(3) beneficial effect
Magnetic navigation radio frequency ablation catheter provided by the invention, can coordinate magnetic navigation robot make doctor's remote control even operated from a distance become a reality, make doctor away from the irradiation of X-ray; Effectively can reduce myocardial perforation, less operating time, reduce the risk of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention magnetic navigation radio frequency ablation catheter;
Fig. 2 is that magnetic navigation radio frequency ablation catheter according to a preferred embodiment of the invention melts part-structure schematic diagram;
Fig. 3 is that magnetic navigation radio-frequency (RF) ablation leads far-end gradual change hose construction schematic diagram;
Fig. 4 is the overall assembly structure figure of magnetic navigation radio frequency ablation catheter;
Fig. 5 is the sectional view of magnetic navigation radio frequency ablation catheter supervisor.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, further detailed description is done to technical scheme of the present invention, but be not limited only to example below.
As shown in Figure 1, the invention provides a kind of magnetic navigation radio frequency ablation catheter, it comprises: distal ablation part 2, far-end gradual change flexible pipe 3, supervisor 4 and adapter 1, wherein, one end of supervisor 4 connects adapter 1, its other end connects far-end gradual change flexible pipe 3, and one end of described far-end gradual change flexible pipe 3 connects distal ablation part 2
As shown in Figure 4, the head of the afterbody and far-end gradual change flexible pipe 3 that melt part 2 is consolidated, and can select hot melt and binding agent bonding method, preferred available hot melt is welded.The afterbody of described far-end gradual change flexible pipe 3 and the head of supervisor 3 are consolidated, and can select hot melt and binding agent bonding method, preferred available hot melt is welded.Described adapter 1 can select the standard component on market, can the standard electrical adapter of needle selection number.
Concrete, as shown in Figure 2, this melts part 2 and has a tip electrode 21 and three ring electrodes 22, the spacing of tip electrode 21 and three annular electrodes 22 can by practical situation need select, preferably realize by 2-5-2 spacing.Three melt annular electrode 22 and are distributed in the one end of melting tip electrode 21 along melting partial-length direction;
The first Magnetic Sensor 25 is inlayed in this distal ablation part 2 inside, the first sleeve pipe 23 that described first Magnetic Sensor outer wrapping insulant is made.This first sleeve pipe 23 is coated on the first Magnetic Sensor 25, to make annular electrode 22 and the first Magnetic Sensor 25 obtain the object that insulate, and reaches coated internal material, to make the biocompatibility of magnetic navigation radio frequency ablation catheter better.
This tip electrode 21 inside of melting part 2 is hollow, and has a boss.A temperature sensor 24 is inlayed in tip electrode 21 inside of melting part 2, is used for the variations in temperature of gage outfit electrode 21.Tip electrode 21 is had electrode cable 210 and is led on the adapter 1 of conduit by the first Magnetic Sensor 25 hollow space.Temperature sensor 24 and the tip electrode wire 210 of tip electrode 21 inside are fixed on the inwall of tip electrode 21 by Pb-free solder 26.Melt part 2 inside and inlay a Magnetic Sensor 25.Described first Magnetic Sensor 25 is circular ring, and has three perforates 250 in the side of ring wall, and the diameter of perforate 250 is less than 1/3 of ring electrode 22 width.Described three ring electrodes 22 are connected to a ring electrode wire 220, and wire 220 passes Magnetic Sensor perforate 250, by the first Magnetic Sensor 25 hollow space through on the adapter 1 of conduit.The position first sleeve pipe 23 corresponding to perforate 250 is provided with hole, and ring electrode wire 220 is connected on adapter 1 through the first Magnetic Sensor hollow space by hole and perforate.
Wherein, tip electrode 21 is made up of the inert metal material of biocompatibility, and preferred embodiments of the present invention adopt platinumiridio, comprise ring electrode 22 and also can prepare with platinumiridio.The optional galvanic couple temperature sensor of temperature sensor 24, resistance temperature sensor and grating temperature sensor etc.The top of the position of temperature sensor 24 proximity head electrode 21 inner surface as far as possible.Wherein, Pb-free solder 26 is medical Pb-free solder, temperature sensor 24 and tip electrode wire 210 is cemented in tip electrode 21 with Pb-free solder 26.
Wherein, the first sleeve pipe 23 is made up of the macromolecular material of biocompatibility, preferably, is made up of polyethers front end amide, polyurethane or nylon material.The permanent magnet material that first Magnetic Sensor 25 adopts remanent magnetism larger is made, and preferred material has NdFeB material, Ferrite Material.
Tip electrode 21 and the first sleeve pipe 23 adopt medical glue consolidation, and preferred medical glue has 4011,4014,3011.The head end plug of temperature sensor 25 and tip electrode wire 210 is preferably then filled and then firm welding with Pb-free solder to tip electrode 21 inside by the temperature sensor 25 of tip electrode 21 inside and tip electrode wire 210.
As shown in Figure 3, far-end gradual change hose segment 3 is made up of some plastic tubes and Magnetic Sensor.The Magnetic Sensor that on this far-end gradual change flexible pipe 3, two structures spaced apart are identical, specifically comprises near the second Magnetic Sensor 43 of distal ablation part and the 3rd Magnetic Sensor 45 away from distal ablation part; At second Magnetic Sensor 43 outer cladding one deck plastic bushing 42, at the 3rd Magnetic Sensor 45 outer cladding one deck plastic bushing 46, sleeve pipe 42,46 and gradual change hose segment 3 are welded together by the method for sweat soldering, like this, can guarantee that the second Magnetic Sensor 43 is coated on inside by sleeve pipe 42 completely, and keep fixing in the axial direction.3rd Magnetic Sensor 45 is coated on inside by sleeve pipe 46 completely, and keeps fixing in the axial direction.The size of the second Magnetic Sensor 43 and the 3rd Magnetic Sensor 45 and magnetic property are identical, and the larger permanent magnet material of remanent magnetism can be adopted to make, and preferred material has NdFeB material, Ferrite Material.
Wherein, far-end gradual change flexible pipe 3 is welded by the tubing of different soft and hard degree and different size along its length.
Concrete, the caliber 0.2mm wider than the caliber of part 41 between the second Magnetic Sensor 43 and distal ablation part 2 of far-end gradual change flexible pipe 3 part 44 between the second Magnetic Sensor 43 and the 3rd Magnetic Sensor 45.The caliber 0.2mm wider than the caliber of part 44 between the 3rd Magnetic Sensor 45 and the second Magnetic Sensor 43 of gradual change flexible pipe 3 part 47 between supervisor 4 and the 3rd Magnetic Sensor 45.
Wherein, between the second Magnetic Sensor 43 and distal ablation part 2, part 41 is hollow tube, and its material by the Polymer materialspreparation of biocompatibility, can be preferably polyethers front end amide, polyurethane or nylon material.
Gradual change flexible pipe 3 part 47 between supervisor 4 and the 3rd Magnetic Sensor 45 preferably proximally arrives far-end deliquescing gradually in soft durometer, preferably consistent in size, preferably changes on material.
Arrange stay pipe in gradual change flexible pipe 3, to ensure the support force of tube wall transverse direction, wherein stay pipe can select the support tubing of convolute elastic tube or softness to make.Supervisor 4 is the braided tube be made up of rustless steel braided wires.
Except flexible pipe 41, sleeve pipe 42 and sleeve pipe 46 also with the preparation of polymer-polymer miscibility material, can select polyethers front end amide, polyurethane or nylon material to prepare.
At sleeve pipe 46 and flexible pipe 44, flexible pipe 44 and sleeve pipe 42, between sleeve pipe 42 and flexible pipe 41, consolidation is connected together, and can select hot melt and binding agent bonding method, and preferred available hot melt is welded.
As shown in Figure 5, supervisor 4 comprises outer tube 31, inner tube 33 and intermediate layer mesh grid, and wherein, outer tube 31 and inner tube 33 are made up of polymeric biocompatible material, and intermediate layer establishment net 32 preferably selects stainless steel silk.
Magnetic navigation radio frequency ablation catheter of the present invention is the conduit for magnetic navigation equipment.Three Magnetic Sensors of distal end of catheter are follow change in the change of magnetic navigation equipment magnetic direction, thus drive conduit head end to arrive the direction and position of specifying.
Magnetic navigation radio frequency ablation catheter provided by the invention, can coordinate magnetic navigation robot make doctor's remote control even operated from a distance become a reality, make doctor away from the irradiation of X-ray; Effectively can reduce myocardial perforation, less operating time, reduce the risk of operation.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. a magnetic navigation radio frequency ablation catheter, is characterized in that, comprises proximal connector, supervisor, far-end gradual change flexible pipe and distal ablation part;
One end of described supervisor connects proximal connector, and its other end connects far-end gradual change flexible pipe, and one end of described far-end gradual change flexible pipe connects distal ablation part;
The described part that melts comprises and melts tip electrode and multiplely melt annular electrode, and described multiple annular electrode that melts is distributed in the one end of melting tip electrode along melting partial-length direction;
Described distal ablation partial interior inlays the first Magnetic Sensor, the first sleeve pipe that described Magnetic Sensor outer wrapping insulant is made.
2. magnetic navigation radio frequency ablation catheter according to claim 1, is characterized in that, the quantity of described tip electrode is one, and described tip electrode is hollow structure, and end is provided with boss;
The described quantity melting annular electrode is three.
3. magnetic navigation radio frequency ablation catheter according to claim 1, is characterized in that, temperature sensor is inlayed on described tip electrode inner surface top.
4. magnetic navigation radio frequency ablation catheter according to claim 1, is characterized in that, described first Magnetic Sensor is circular hollow structure, and ring wall side has three perforates, and the diameter of described perforate is less than and melts 1/3 of annular electrode width.
5. magnetic navigation radio frequency ablation catheter according to claim 2, is characterized in that, described tip electrode is provided with electrode cable, and described electrode cable is connected on adapter through Magnetic Sensor hollow space;
The position described sleeve pipe corresponding to perforate is provided with hole, and described three ring electrodes connecting ring electrode cable respectively, described ring electrode wire is connected on adapter through Magnetic Sensor hollow space by hole and perforate.
6. magnetic navigation radio frequency ablation catheter according to claim 1, it is characterized in that, the Magnetic Sensor that on described far-end gradual change flexible pipe, two structures spaced apart are identical, specifically comprises near the second Magnetic Sensor of distal ablation part and the 3rd Magnetic Sensor away from distal ablation part; The second sleeve pipe that described second Magnetic Sensor and the 3rd Magnetic Sensor outer cladding insulant are made.
7. magnetic navigation radio frequency ablation catheter according to claim 6, is characterized in that, described far-end gradual change flexible pipe is welded by the tubing of different soft and hard degree and different size along its length.
8. magnetic navigation radio frequency ablation catheter according to claim 6, is characterized in that, the caliber of described far-end gradual change flexible pipe part between the second Magnetic Sensor and the 3rd Magnetic Sensor is wider than the caliber between the second Magnetic Sensor and distal ablation part.
9. magnetic navigation radio frequency ablation catheter according to claim 6, is characterized in that, the caliber of described far-end gradual change flexible pipe part between supervisor and the 3rd Magnetic Sensor is wider than the caliber between the 3rd Magnetic Sensor and the second Magnetic Sensor.
10. the magnetic navigation radio frequency ablation catheter according to right 6, is characterized in that, arranges stay pipe in described far-end gradual change flexible pipe; Described supervisor is the braided tube be made up of rustless steel braided wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210360.XA CN104207840B (en) | 2013-05-30 | 2013-05-30 | magnetic navigation radio frequency ablation catheter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210360.XA CN104207840B (en) | 2013-05-30 | 2013-05-30 | magnetic navigation radio frequency ablation catheter |
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| CN104207840A true CN104207840A (en) | 2014-12-17 |
| CN104207840B CN104207840B (en) | 2016-03-30 |
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| CN201310210360.XA Active CN104207840B (en) | 2013-05-30 | 2013-05-30 | magnetic navigation radio frequency ablation catheter |
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Cited By (3)
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| CN106725852A (en) * | 2016-12-02 | 2017-05-31 | 上海精劢医疗科技有限公司 | The operation guiding system of lung puncture |
| CN108143481A (en) * | 2016-12-02 | 2018-06-12 | 四川锦江电子科技有限公司 | A kind of ablation catheter and the ablating device for including this conduit |
| CN109717942A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | A kind of cryoablation conduit |
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| US6325796B1 (en) * | 1999-05-04 | 2001-12-04 | Afx, Inc. | Microwave ablation instrument with insertion probe |
| US20070016006A1 (en) * | 2005-05-27 | 2007-01-18 | Yehoshua Shachar | Apparatus and method for shaped magnetic field control for catheter, guidance, control, and imaging |
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| CN102596081A (en) * | 2009-11-02 | 2012-07-18 | 皇家飞利浦电子股份有限公司 | Radio frequency ablation catheter and magnetic resonance imaging system |
| CN102688093A (en) * | 2012-06-20 | 2012-09-26 | 深圳市惠泰医疗器械有限公司 | Renal artery cold saline water radio frequency ablation controllable electrode catheter |
| CN102811677A (en) * | 2010-03-03 | 2012-12-05 | 麦德托尼克消融前沿有限公司 | Variable-output radiofrequency ablation power supply |
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| US6325796B1 (en) * | 1999-05-04 | 2001-12-04 | Afx, Inc. | Microwave ablation instrument with insertion probe |
| US20070016006A1 (en) * | 2005-05-27 | 2007-01-18 | Yehoshua Shachar | Apparatus and method for shaped magnetic field control for catheter, guidance, control, and imaging |
| CN101888807A (en) * | 2007-11-30 | 2010-11-17 | 圣朱德医疗有限公司房颤分公司 | Irrigated ablation catheter having magnetic tip for magnetic field control and guidance |
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| CN102811677A (en) * | 2010-03-03 | 2012-12-05 | 麦德托尼克消融前沿有限公司 | Variable-output radiofrequency ablation power supply |
| CN102266245A (en) * | 2010-06-04 | 2011-12-07 | 心诺普医疗技术（北京）有限公司 | Perfusion-type radiofrequency ablation catheter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725852A (en) * | 2016-12-02 | 2017-05-31 | 上海精劢医疗科技有限公司 | The operation guiding system of lung puncture |
| CN108143481A (en) * | 2016-12-02 | 2018-06-12 | 四川锦江电子科技有限公司 | A kind of ablation catheter and the ablating device for including this conduit |
| CN109717942A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | A kind of cryoablation conduit |
Also Published As
| Publication number | Publication date |
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| CN104207840B (en) | 2016-03-30 |
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Effective date of registration: 20180322 Address after: 102200 Beijing, Changping District super Road, building No. 37, No. 7 Patentee after: Lop Pharmaceutical Co., Ltd. (Beijing) limited liability company Address before: 102200 Changping District science and Technology Park, Beijing Road, No. 37 super building, No. 3 Patentee before: Lepu (Beijing) Medical Equipment Co.,Ltd. |
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Effective date of registration: 20190730 Address after: 102200 Beijing, Changping District super Road, building No. 37, No. 7 Patentee after: Lepu (Beijing) Medical Equipment Co.,Ltd. Address before: 102200 Beijing, Changping District super Road, building No. 37, No. 7 Patentee before: Lop Pharmaceutical Co., Ltd. (Beijing) limited liability company |