CN106308922A - Multi-electrode ablation device - Google Patents
Multi-electrode ablation device Download PDFInfo
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- CN106308922A CN106308922A CN201510388172.5A CN201510388172A CN106308922A CN 106308922 A CN106308922 A CN 106308922A CN 201510388172 A CN201510388172 A CN 201510388172A CN 106308922 A CN106308922 A CN 106308922A
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Abstract
The invention relates to the field of tissue ablation, and particularly relates to a multi-electrode ablation device. The multi-electrode ablation device includes a flexible main tube; tail electrodes for ablation are arranged at ends of the main tube; a plurality of ring electrodes are arranged on the main tube along an outer wall of the main tube, wherein the number of the ring electrodes is equal to or greater than 2; a pressure sensor is arranged between every two adjacent ring electrodes; the pressure sensors are configured to deform due to the pressure of a tissue and generate a corresponding signal according to the deformation. The multi-electrode ablation device can ablate multiple tissues at the same time and can achieve accurate and effective ablation.
Description
Technical field
The present invention relates to ablation of tissue field, particularly to a kind of multipole ablating device.
Background technology
Arrhythmia is one of common ARR disease in the world, and application catheter carries out radio-frequency ablation procedure and is widely used to treat such disease clinically.Radio-frequency (RF) energy by conduit to electrode and the position of electrode contact and surrounding myocardium tissue to melt.Confirm only to melt under the conditions of the electrode of distal end of catheter and the contact pressure of cardiac muscular tissue are suitable to can be only achieved preferable therapeutic effect through clinic.
When ablation catheter is treated, it is to insert the catheter in heart, and make distal end of catheter contact with wall of the heart, in the process it is generally important that make the contact wall of the heart that the far-end of conduit is good, otherwise, excessive pressure is likely to result in damage worthless to heart tissue, and even heart wall perforation, too small pressure is then unable to reach the therapeutic purposes thoroughly melted.
The product melted at present mostly is one pole, and therapeutic efficiency is low, and the time of melting is long, sometimes puts into multiple ablation catheter and enters heart tissue, adds the misery of operating difficulty and sufferer, and ablation effect is less desirable simultaneously.
The existing technology with pressure detecting function is that one pole melts, and uses electromagnetism or optical technology to measure the pressure that reclines of far-end and tissue, and higher and complicated to equipment requirements, manufacturing cost is the most of a relatively high.
The contact force using the sensor of magnetic induction to come sensing tube far-end and organ is added in the catheter as Chinese patent CN102106753A mentions, the easily distortion by the interference of external magnetic field in the application of this sensor, and this technology needs to install multiple Magnetic Sensor technology difficulty in the space that catheter distal tip is minimum greatly, thus add manufacturing cost.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, it is provided that one can melt many places tissue, and the multipole ablating device melted accurately and effectively simultaneously.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of multipole ablating device, it is for ablation tissue inserted into the patient, and it includes the main body tube that can bend, and main body tube end is provided with the end electrodes for melting,
On described main body tube, main body tube outer wall is provided with some ring electrodes (for ablation tissue), ring electrode quantity equals to or more than two, it is provided with pressure transducer between adjacent ring electrode, described pressure transducer is configured to be deformed by from the pressure of described tissue, and pressure transducer can produce corresponding signal according to deformation.
In prior art, when needs melt substantial amounts of tissue, use the conduit having multipole ablating electrode, but these multipole ablating electrodes contact instability with tissue, often only some touches tissue to supravasal ablating electrode, or contact effect is bad, or contact defective tightness excessive to organizational stress, at this moment ablation effect is bad, it is impossible to enough melt exactly in a organized way；
And the present invention arranges pressure transducer between multiple ring electrodes and (is compared to the easily magnetic induction sensor of distortion by the interference of external magnetic field of the prior art, more stable, it is more accurate to measure), the pressure of the tissue that its pressure transducer that can record current location is subject to is how many, judge that with this ring electrode by pressure transducer of current location is the most excessive to organizational stress, or contact defective tightness, so that user can adjust shape and the position of main body tube according to testing result, enable most or all ring electrodes effectively, most preferably touch tissue, melt the most again, then can melt many places tissue simultaneously, and accurate and effective.
Preferably, described main body tube includes the far-end body being positioned at its end, is arranged on described far-end body to the arrangement of described ring electrode, and described far-end body can be helical form, irregular linear shape, circle shape, to meet different demands.
Preferably, when described far-end body is helical form or circle shape, far-end body end is provided with antisitic defect structure, it is to be connected to far-end body end the projection outwards turned down, protruding top end surface is round and smooth, when preventing far-end body from going deep in human body, health is caused damage.
Preferably, described antisitic defect structure being provided with detecting electrode, it can monitor whether far-end body surrounding tissue provides electricity physiological signal, if not having electricity physiological signal i.e. to illustrate to melt successfully, contributing to doctor and can be clearly understood that the effect for the treatment of.
Preferably, below described ring electrode, it is provided with temperature sensor, when melting work with detection tissue temperature to improve the safety for the treatment of.
Preferably, described temperature sensor is welded on ring electrode inner surface, compare and be arranged on ring electrode lower end and (do not contact with ring electrode, it is arranged in the internal structure of main body tube, this more preferable processing, but measure inaccurate), the mode during this is preferred can more directly detect the temperature of ring electrode, thus detect tissue temperature more accurately, safer.
Preferably, described far-end tubular body is provided with intrusion pipe, is provided with the fill orifice connected with described intrusion pipe or perfusion groove, it is possible to output liquid by described ring electrode, when melting, liquid can go out cool down the surface of ablation tissue from fill orifice or perfusion concentrated flow, reaches deeper depth of ablation.
Preferably, described pressure transducer is wrapped with flexible pipe body, and pressure transducer is separated with tissue, shields.
Preferably, described ring electrode is arranged in the first-class spacing of far-end body, and being more evenly distributed, adaptability is higher, and ablation effect is more preferable simultaneously.
Compared with prior art, beneficial effects of the present invention:
Melt many places tissue, and accurate and effective simultaneously.
Accompanying drawing illustrates:
Fig. 1 be multipole ablating device far-end body of the present invention be spiral helicine structural representation；
Fig. 2 is multipole ablating device band fill orifice schematic diagram of the present invention；
Fig. 3 be multipole ablating device far-end body of the present invention be the structural representation of circle shape or semicircle shape；
Fig. 4 be multipole ablating device far-end body of the present invention be the structural representation of irregular linear shape；
Fig. 5 is multipole ablating device internal structural map of the present invention；
Fig. 6 is that multipole ablating device band of the present invention irrigates groove sectional view；
Fig. 7 is multipole ablating device band fill orifice sectional view of the present invention；
Fig. 8 is pressure sensor structure schematic diagram of the present invention；
Fig. 9 is annular distal end operating diagram of the present invention；
Figure 10 is annular distal end of the present invention curved detection schematic diagram；
Figure 11 is supporting member schematic diagram A of the present invention；
Figure 12 is supporting member schematic diagram B of the present invention；
Figure 13 is supporting member schematic diagram C of the present invention；
Figure 14 device overall schematic；
Labelling in figure: 1-antisitic defect structure, 2-ring electrode, 3-intrusion pipe, 4-supports body, 5-temperature sensor, 6-supporting member, 7-flexible pipe body, 8-main body tube, 9-pressure transducer, 10-bending section electrode A, 11-end electrodes, 12-bending section electrode B, 13-detecting electrode A, 14-detecting electrode B, 15-main body tube 16 handle arrangement, 17-female Luer 18-adapter, 21-irrigates groove, 22-fill orifice, 31-ring electrode brine channel, 91-sensors X, 92-sensor Y.
Detailed description of the invention
Below in conjunction with embodiment and detailed description of the invention, the present invention is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
Embodiment
1
Such as Fig. 1-7, a kind of multipole ablating device, it is used for ablation tissue inserted into the patient, it includes the main body tube 8 that can bend, such as Figure 10, (in described main body tube 8, it is provided with supporting member 6, such as Figure 12, 13, it is for shaping to main body tube 8, make main body tube 8 when being deformed to a certain state, the shape of this state can be kept, conveniently carry out lower sequence work, supporting member 6 is located on support body 4, support body 4 to be used for the parts such as pressure transducer 9 described below and ring electrode 2 are installed, described supporting member 6 keeps plane or spiral type for making the shape of the whole main body tube of molding 8, such as Fig. 1-4, supporting member 6 material can be that the nickel-titanium alloy material with memory function is made), main body tube 8 end is provided with the end electrodes 11 for melting,
Described main body tube 8 includes the far-end body being positioned at its end, on described main body tube 8, main body tube 8 outer wall is provided with some ring electrodes 2, described ring electrode 2 is arranged in the first-class spacing of far-end body, ring electrode 2 quantity equals to or more than two, pressure transducer 9 it is provided with between adjacent ring electrode 2, it can be that the relatively soft materials such as PVC are made that described pressure transducer 9 is wrapped with flexible pipe body 7(), flexible pipe body 7 two ends are tightly connected adjacent ring electrode 2, described pressure transducer 9 is configured to be deformed by from the pressure of described tissue, pressure transducer 9 can produce corresponding signal according to deformation.
nullSuch as Fig. 5-7，Described main body tube 8 includes being positioned at the far-end body of its end, and (described far-end tubular body is provided with intrusion pipe 3，The fill orifice 22 connected with described intrusion pipe 3 or perfusion groove 21 it is provided with on described ring electrode 2 side or ring electrode 2，Can output liquid，Cooling effect is played when melting，Described fill orifice 22 or perfusion groove 21 are connected with intrusion pipe 3 by ring electrode brine channel 31，Realize the transfusion of intrusion pipe 3)，It is arranged on described far-end body to the arrangement of described ring electrode 2，Described far-end body can be helical form、Irregular linear shape、Circle shape (is determined by the shape of supporting member 6，Such as Figure 11-13)，When described far-end body is helical form or circle shape，Far-end body end is provided with antisitic defect structure 1，It is to be connected to far-end body end the projection outwards turned down，Protruding top end surface is round and smooth.
It is provided with detecting electrode in described antisitic defect structure 1, it can monitor whether far-end body surrounding tissue provides electricity physiological signal, in the present embodiment, detecting electrode includes detecting electrode A13, detecting electrode B14, two detecting electrodes are arranged in antisitic defect structure 1 with keeping certain distance, after having melted, detecting electrode A13 and detecting electrode B14 will detect tissue and the most also can provide electricity physiological signal, if not having electricity physiological signal i.e. to illustrate to melt successfully.
Being provided with temperature sensor 5 below described ring electrode 2, described temperature sensor 5 is welded on ring electrode 2 inner surface.
nullSuch as Fig. 9、10，At least one bending segment is comprised on described main body tube 8，The electrode possessing mapping function it is provided with at described bending segment，In the present embodiment, bending segment is two，Bending section electrode A 10 it is respectively arranged with at bending segment、Bending section electrode B 12，End or the end electrodes 11 of described antisitic defect structure 1 possess mapping function，So coordinate pressure transducer 9，In conjunction with the length of own main body tube 8 between deflection section and the end of antisitic defect structure 1 or end electrodes 11，Also have the end of antisitic defect structure 1 or end electrodes 11 and bending section electrode A 10、12 mappings of bending section electrode B position out，Can be in the hope of the particular location of multistage ablating device，More preferable must the carrying out of doctor is helped to melt or other operation processs，(do not know what angle multistage ablating device becomes with tissue surface compared to existing technology，The case of bending of whole multistage ablating device，The full experience by doctor，Easily tissue is caused damage，Therapeutic effect can not get effectively ensureing simultaneously)，Effect is more preferable.
Such as Fig. 8, single pressure transducer 9 is divided into sensors X 91, sensor Y92, sensors X 91, Y92 are arranged to the pressure of all directions outside acceptance subject pipe. and it is calculated ring electrode 2 by the summation of the size of the value being stressed and reclines the pressure of tissue, the signal of telecommunication that equipment Inspection inputs to pressure transducer 9, force value is formed by certain proportionate relationship after being converted, and then determine the force value in each position arranging pressure transducer 9, when melting by judging that the numerical value of each pressure transducer 9 is to judge the effect that the reliability reclined melts with lifting.
In the present embodiment, described pressure transducer 9 can be piezoresistance sensor or piezoelectric transducer, and described pressure transducer 9 is not limited to the mode in this patent embodiment, and pressure transducer can also include utilizing magnetics, optics, ultrasound wave to carry out the pressure transducer tested.
Such as Figure 14, it is mounted with the single unit system schematic diagram after other parts that match for the present embodiment multipole ablating device, and the present embodiment ablating device is connected on main pipe 15, and main pipe is connected on handle arrangement 16, female Luer 17 connects intrusion pipe 3, for carrying the passage of perfusion liquid.Adapter 18 is for being attached with equipment.
Claims (9)
1. a multipole ablating device, it is for ablation tissue inserted into the patient, and it includes the main body tube that can bend, it is characterised in that
On described main body tube, main body tube outer wall is provided with some ring electrodes, ring electrode quantity equals to or more than two, it is provided with pressure transducer between adjacent ring electrode, described pressure transducer is configured to be deformed by from the pressure of described tissue, and pressure transducer can produce corresponding signal according to deformation.
A kind of multipole ablating device the most according to claim 1, it is characterized in that, described main body tube includes the far-end body being positioned at its end, is arranged on described far-end body to the arrangement of described ring electrode, and described far-end body can be helical form, irregular linear shape, circle shape.
A kind of multipole ablating device the most according to claim 2, it is characterized in that, when described far-end body is helical form or circle shape, far-end body end is provided with antisitic defect structure, it is to be connected to far-end body end the projection outwards turned down, and protruding top end surface is round and smooth.
A kind of multipole ablating device the most according to claim 3, it is characterised in that being provided with detecting electrode in described antisitic defect structure, it can monitor whether far-end body surrounding tissue provides electricity physiological signal.
A kind of multipole ablating device the most according to claim 4, it is characterised in that be provided with temperature sensor below described ring electrode.
A kind of multipole ablating device the most according to claim 5, it is characterised in that described temperature sensor is welded on ring electrode inner surface.
A kind of multipole ablating device the most according to claim 6, it is characterised in that described far-end tubular body is provided with intrusion pipe, described ring electrode is provided with the fill orifice connected with described intrusion pipe or perfusion groove, it is possible to output liquid.
A kind of multipole ablating device the most according to claim 7, it is characterised in that described pressure transducer is wrapped with flexible pipe body.
A kind of multipole ablating device the most according to claim 8, it is characterised in that described ring electrode is arranged in the first-class spacing of far-end body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388172.5A CN106308922A (en) | 2015-06-30 | 2015-06-30 | Multi-electrode ablation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388172.5A CN106308922A (en) | 2015-06-30 | 2015-06-30 | Multi-electrode ablation device |
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| CN106308922A true CN106308922A (en) | 2017-01-11 |
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| CN201510388172.5A Pending CN106308922A (en) | 2015-06-30 | 2015-06-30 | Multi-electrode ablation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717943A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | Cryoablation conduit and ablating device with mapping function |
| CN109717944A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | A kind of freeze melting device and its application method |
| 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 |
| CN111772784A (en) * | 2020-08-24 | 2020-10-16 | 龙德勇 | Ablation device |
| CN113729926A (en) * | 2019-12-27 | 2021-12-03 | 苏州恒瑞宏远医疗科技有限公司 | Radio frequency closure catheter and method of making same |
| CN115813526A (en) * | 2023-02-17 | 2023-03-21 | 上海安钛克医疗科技有限公司 | Electrophysiology catheter and high-voltage pulse ablation system |
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| CN103919606A (en) * | 2014-04-14 | 2014-07-16 | 乐普（北京）医疗器械股份有限公司 | Magnetic-navigation cold saline perfusion radiofrequency ablation catheter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109717943A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | Cryoablation conduit and ablating device with mapping function |
| CN109717944A (en) * | 2017-10-31 | 2019-05-07 | 四川锦江电子科技有限公司 | A kind of freeze melting device and its application method |
| 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 |
| CN109717943B (en) * | 2017-10-31 | 2021-05-28 | 四川锦江电子科技有限公司 | Cryoablation catheter with mapping function and ablation device |
| CN113729926A (en) * | 2019-12-27 | 2021-12-03 | 苏州恒瑞宏远医疗科技有限公司 | Radio frequency closure catheter and method of making same |
| CN113729926B (en) * | 2019-12-27 | 2024-01-05 | 苏州恒瑞宏远医疗科技有限公司 | Radio frequency closure catheter and manufacturing method thereof |
| CN111772784A (en) * | 2020-08-24 | 2020-10-16 | 龙德勇 | Ablation device |
| CN115813526A (en) * | 2023-02-17 | 2023-03-21 | 上海安钛克医疗科技有限公司 | Electrophysiology catheter and high-voltage pulse ablation system |
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Application publication date: 20170111 |