The content of the invention
Based on this, it is necessary to which there is provided the radio-frequency ablation electrode that a kind of accuracy is high, ablation effect is good and RF ablation dressPut.
A kind of radio-frequency ablation electrode, including electrode tip and the electrode body that is connected with the electrode tip, the electrode bodyService portion and connecting portion including interconnection, the service portion are arranged between the electrode tip and connecting portion, the effectThe periphery in portion is by the described first insulation layer segment covering, and the part that the service portion is not covered by the first insulating barrier disappears for radio frequencyMelt portion, the periphery of the connecting portion is completely covered by the second insulating barrier.
In one embodiment, first insulating barrier is the outer circumferentially disposed circumferential angle along the electrode bodyFor 30 ° -330 ° of transparent insulating layer.
In one embodiment, the electrode tip is shaped as triangular pyramid.
In one embodiment, the outer of the electrode tip is circumferentially provided with the 3rd insulating barrier.
In one embodiment, the radio-frequency ablation electrode also includes being arranged at the electrode body and second insulationDeveloping layer between layer；
The developing layer is outer circumferentially disposed around the connecting portion；
The developing layer is used to determine that the relative position depth of the radio-frequency ablation electrode active component and lesions position is closedSystem.
In one embodiment, the radio-frequency ablation electrode also includes being arranged at the electrode body and second insulationScale layer between layer；
The scale layer is adjacent with the developing layer, and is arranged at the one of the close connecting portion of the electrode bodyEnd；
The scale layer is around the outer circumferentially disposed of the connecting portion；
The scale layer is used to show that the radio-frequency ablation electrode is punctured to the size of human body.
In one embodiment, the scale layer includes replacing be disposed adjacent first around ring and second around ring；
Described first around ring with described second around the different color of ring setting.
In one embodiment, described first around ring and described second around ring equal in width.
A kind of RF ablation device, including radio-frequency ablation electrode and handle described above；
The handle is fixedly connected with the one end of the radio-frequency ablation electrode away from the electrode tip.
In one embodiment, the handle includes：Cue mark, the cue mark is relative with the RF ablation portionShould, opening angle size and direction for indicating the RF ablation portion
Above-mentioned radio-frequency ablation electrode, including electrode tip and the electrode body that is connected with the electrode tip.The electrode sheetBody includes the service portion and connecting portion being connected with each other.The service portion is arranged between the electrode tip and connecting portion.It is described to makeCovered with the periphery in portion by the described first insulation layer segment.The part that the service portion is not covered by the first insulating barrier is radio frequencyAblation portion.The periphery of the connecting portion is completely covered by the second insulating barrier.Radio-frequency ablation electrode described above, in the electrodeThe RF ablation portion is set between head and the connecting portion.The electrode body in the RF ablation portion is exposed, is not hadThere is the cladding of first insulating barrier.The RF ablation portion formed on the radio-frequency ablation electrode can accurately be positionedAngle.When doctor carries out radiofrequency ablation therapy to the important blood vessels or nerve in internal organs etc. tumour, volume can be avoidedOuter damage.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pairThe radio-frequency ablation electrode and RF ablation device of the present invention is further described.It should be appreciated that specific reality described hereinExample is applied only to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, provide a kind of radio-frequency ablation electrode 10, including electrode tip 100 and it is connected with the electrode tip 100Electrode body 200.The electrode body 200 includes the service portion 210a and connecting portion 220 being connected with each other.The service portion 210aIt is arranged between the electrode tip 100 and connecting portion 220.Covered by the part of the first insulating barrier 230 periphery of the service portion 210aLid.The part that the service portion 210a is not covered by first insulating barrier 230 is RF ablation portion 210.The connecting portion220 periphery is completely covered by the second insulating barrier 240.
Specifically, the electrode tip 100 is metal electrode head.The electrode tip 100 is fastened on described by processing technologyThe front end of electrode body 200.With first 100 tip of the metal electrode for starting point, the naked of corresponding length has been stayed by different modelReveal electrode.The diameter of the electrode body 200 can also be modified and set according to the size for the focus that ablation is needed in operationMeter.In one embodiment, a diameter of 1.5mm of the electrode body 200.Described is sprayed on the electrode body 200One insulating barrier 230.First insulating barrier 230 makes the electrode body 200 directly not exposed.First insulating barrier 230 isThe insulating barrier of transparent high temperature resistant.First insulating barrier 230 can insulate first.Hair will be completely cut off by scribbling the part of insulating barrierHeat, it is to avoid infringement is produced to human normal tissue.Secondly, first insulating barrier 230 can lubricate, and reduce resistance when puncturingPower.It is appreciated that first insulating barrier 230 can be actually needed in operation, it is incomplete to spray in the electrodeBody 200.State service portion 210a and connecting portion 220 that electrode body 200 includes being connected with each other.The service portion 210a with it is describedElectrode tip 100 is connected.Set in the junction of the electrode body 200 and the electrode tip 100 and exposed do not spray described theThe opening of one insulating barrier 230.The position formed in the opening is the RF ablation portion 210.I.e. in the service portion 210aForm the RF ablation portion 210 not covered by first insulating barrier 230.The shape in the RF ablation portion 210Specific restriction is not done with size, can be needed to be configured according to different operations.Specifically, it can be the electrode tip100 and the RF ablation portion 210 total length be effective electrode length.The electrode tip 100 can set very short, oneIn individual embodiment, the electrode tip 100 could be arranged to 2-4mm, and the length in the RF ablation portion 210 can be 35mm.InstituteState and determine angle ablation, be to avoid important blood vessel or internal organs.
In the present embodiment, the RF ablation portion 210 ensure that the position that the radio-frequency ablation electrode 10 works isSet angle, the exposed RF ablation portion 210 electrode part.So user just can be according to the different focuses of patientSituation selects the electrode of different exposed angles, protection important organ, blood vessel or the nerve of maximum possible.The radio-frequency ablation electrode10 when in use, and the radio-frequency ablation electrode 10 is connected by wire with RF ablation controller.After energization, pass through RF ablationController controls RF energy.When RF energy is launched, doctor is according to image documentation equipment and the handle of the radio-frequency ablation electrode 10The instruction of angle direction determines ablation locations and direction.So described electrode tip 100 and the RF ablation portion 210 it is exposedRF energy is launched in part, implements orientation ablation to focus.It is appreciated that the electrode tip 100 is very short, and, determine angleThe RF ablation of degree, which is mainly, avoids important blood vessel or internal organs.First insulating barrier 230 surrounds the RF ablation electricityA part for pole 10, so that RF energy can only outwards be launched at the RF ablation portion 210, it is achieved thereby that determining angleAccurate RF energy transmitting.So as to which the radio-frequency ablation electrode 10 is realized only to be melted to the focus for needing RF ablation, rightOther important organs, the influence of blood vessel and nerve are preferably minimized.
In one embodiment, first insulating barrier 230 is the outer circumferentially disposed week along the electrode body 200To the transparent insulating layer that angle is 30 ° -330 °.
It is appreciated that the RF ablation portion 210 is for the angle that the outer circumference along the electrode body 200 is opened up30 ° -330 ° of opening.The RF ablation portion 210 is not covered with first insulating barrier 230.The RF ablation portion 210 is straightConnect and expose the electrode body 200.
Specifically, the RF ablation portion 210 can be the square, rectangular of the regular electrode body 200 as described in surroundingShape, circular or any irregular figure.The setting that the RF ablation portion 210 is open can according to specific size of tumor andShape is set.The RF ablation portion 210 can be that the angle opened up along the outer circumference of the electrode body 200 is30 ° -330 °, the opening that depth is 3mm-40mm.It is appreciated that the opening angle in the RF ablation portion 210 can for 30 °,50°、60°、90°、110°、160°、240°、280°、320°.More specifically, the opening depth in the RF ablation portion 210 also may be usedTo be selected in the range of 3mm-40mm.More preferably, the RF ablation portion 210 is along the electrode body 200Open up 30 ° -120 ° of outer circumference directly expose the opening of the electrode body 200.
In the present embodiment, the radio-frequency ablation electrode 10 is disappeared using with certain opening angle, rule the radio frequencyMelt portion 210.The rule design in the RF ablation portion 210 so that doctor using during the radio-frequency ablation electrode 10,It is easier to make the alignment of RF ablation portion 210 focus so that surgical procedure is simpler, accurate.
In one embodiment, the electrode tip 100 is shaped as triangular pyramid.
Specifically, the shape of the electrode tip 100 is not intended to limit, and can be cone, triangular pyramid or polygonal pyramid shape.It is describedElectrode tip 100, which is designed as triangular pyramid shape, can keep optimal puncture resistance and strength of materials performance.The electrode tip 100 and instituteThe total length for stating RF ablation portion 210 can be 5mm-50mm.
Referring to Fig. 2, in one embodiment, the outer of the electrode tip 100 is circumferentially provided with the 3rd insulating barrier 110.
In one embodiment, the electrode tip 100 can set certain length, can be covered at the electrode tip 100The insulating barrier 110 of lid the 3rd.It is also understood that insulation and the lubrication of the 3rd insulating barrier 110 and first insulating barrier 230Effect can be with identical.The electrode tip 100 is primarily served, and after the effect of puncture, lubrication the electrode tip 100 can be more convenientInto human body.
In one embodiment, the radio-frequency ablation electrode 10 also includes being arranged at the electrode body 200 and described theDeveloping layer 250 between two insulating barriers 240.The developing layer 250 is outer circumferentially disposed around the connecting portion 220.It is described aobviousShadow layer 250 is used for the relative position depth relationship for determining the active component of radio-frequency ablation electrode 10 and lesions position.
Specifically, the effect of the developing layer 250 is main visual under developing apparatus, plays mark effect, helps to cureThe raw relative position for determining ablating electrode and focus.The developing layer 250 can be developing ring.The length of the developing ring and instituteThe length for stating radio-frequency ablation electrode 10 is related.The developing layer 250 is act as：Make operation doctor can developing apparatus helpThe relative position of the radio-frequency ablation electrode 10 and focus is directly observed down, so that accurate depthkeeping.In one embodiment, it is describedThickness of the developing layer 250 in the circumference of electrode body 200 is 0.05mm, and the developing layer 250 is in the electrode body 200Width on length direction is 5-10mm.
The developing layer 250 can be developed using enhancing development X-ray or decrease development B ultrasound two ways, to provideUsed to different developing apparatuses.Specifically, one is, develops under X-ray, and the developing layer 250 uses barium sulfate-containing class materialTo strengthen X-ray development, specific relative position of the ablating electrode for carrying out Minimally Invasive Surgery with focus in human body can be seen under X-rayPut, so as to be accurately positioned.Two are, the use of developing layer 250 can increase absorption, strengthen the material of scattered sound waves.Show under B ultrasoundShadow, because B ultrasound uses ultrasonic reflections imaging, the developing layer 250 uses increase and absorbs, strengthens scattering soundThe coating material of ripple, decrease scribbles the imaging of developing ring position to show difference.Sound absorption refers to that sound wave is propagated or on boundary in mediumIn the reflection process of face, the phenomenon of energy reduction, the reason for causing sound absorption is mainly the viscosity, heat conductivity and molecule of mediumRelaxation process, makes regular sound kinergety be irreversibly transformed into irregular energy of thermal motion.It is basis to strengthen scatteringRayleigh scattering principle selects suitable size micro particulate materials, and decrease B ultrasound imaging coating is made jointly with enhancing acoustic wave absorbing materialMaterial, is applied to electrode development ring position, to reach difference development purpose.
In one embodiment, the radio-frequency ablation electrode 10 also includes being arranged at the electrode body 200 and described theScale layer 260 between two insulating barriers 240.The scale layer 260 is adjacent with the developing layer 250, and is arranged at the electrodeOne end of the close connecting portion 220 of body 200.The scale layer 260 is around the outer circumferentially disposed of the connecting portion 220.The scale layer 260 is used to show that the radio-frequency ablation electrode 10 is punctured to the size of human body.
Specifically, traditional electrode when show electrode penetrates human dimension, it is necessary to provide display device in addition.This implementationIn example, the scale layer 260 can directly display the size that the radio-frequency ablation electrode 10 is punctured to human body.Pass through the developmentLayer 250 can set different materials, so as to realize visual function under developing apparatus.The developing layer 250 and describedScale layer 260 is disposed adjacent.Because the developing layer 250 and scale layer 260 are on the length direction of electrode body 200Width set in advance.Therefore it can be coordinated by the developing layer 250 and scale layer 260, directly read describedRadio-frequency ablation electrode 10 penetrates human dimension.
In one embodiment, the scale layer 260 includes replacing be disposed adjacent first around ring 261 and second around ring262.Described first sets different colors around ring 262 around ring 261 and described second.
Specifically, described first different width are could be arranged to around ring 262 around ring 261 and described second.Such as：It is describedFirst around ring 261 width be 50mm, described second around ring 262 width be 10mm.For another example, described first around ring 261Width is 20mm, described second around ring 262 width be 40mm.Described first around ring 261 and described second around ring 262 settingDifferent colors, be in order to prevent doctor estimation error.Set different colors easily to read the RF ablation portion 210 to enterThe depth of human body, makes the use of the radio-frequency ablation electrode 10 safer.
In one embodiment, described first around ring 261 and described second around the equal in width of ring 262.
The width of the scale layer 260 is relevant with the width of the developing layer 250.Specifically, each described first around ring261 width can be equal with the width of the developing layer 250.Described second can be with the developing layer around the width of ring 262250 width is equal, can also be unequal with the width of the developing layer 250.Specifically, described first around ring 261 and describedSecond can be counted from the electrode tip 100 around the design of ring 262, per another colors of last 10mm of 50mm length,Can also be per the circulation of 50mm scales.It can also set, the money degree of the developing ring of the developing layer 250 is 10mm.Described first aroundRing 261 and described second is disposed adjacent around ring 262 with the developing ring.Described first hands over around ring 261 and described second around ring 262For being disposed adjacent.Described first is 50mm around the width of ring 262 around ring 261 and described second.
In the present embodiment, the design of the scale layer 260 of different in width operates doctor to judge from electrode in vitro end to helpElectrode enters the depth of human body.The scale layer 260 can be shown by external scale, be accurately positioned ablating electrode and be pierced into human bodyDepth.
In embodiments of the invention, determining angle is realized by the exposed angle of effective radio-frequency electrode, and angle is towards by curingRaw or user, which rotates, to be determined.Depthkeeping degree is by the exposed longitudinal length of effective radio-frequency electrode, and electrode developing ring front position(can be differentiated under developing apparatus) is determined with focus relative position.In embodiments of the invention, depthkeeping degree can be understood as：Firstth, the longitudinal length of bare electrode, refers to from the Rhizoma Sparganii cone of electrode tip 100 to the lower edge of the first insulating barrier 230Size, have different fixed values (5-50mm).Secondth, the presence of described developing layer 250 so that doctor can be in developing apparatusWith the help of, it is definite to determine the relative position depth relationship of electrode active component and lesions position, rather than only rely on outside by means of electrodeTable scale is estimated.
Fig. 3-Fig. 4 is referred to, in one embodiment there is provided a kind of RF ablation device 20, including described above is penetratedFrequency ablating electrode 10 and handle 300.The handle 300 and the one end of the radio-frequency ablation electrode 10 away from the electrode tip 100It is fixedly connected.
In one embodiment, the handle 300 includes：Cue mark 310.The cue mark 310 and the radio frequencyAblation portion 210 is corresponding, opening angle size and direction for indicating the RF ablation portion 210.
Specifically, the cue mark 310 is arranged at the rear end face of the handle 300.The cue mark 310 canShow angular dimension and the direction in the RF ablation portion 210.
There is provided a kind of RF ablation device 20 in one embodiment.The RF ablation device 20 includes single needle depthkeepingSpend the radio-frequency ablation electrode 10 for determining angle and the handle 300 being attached thereto.The front end of the radio-frequency ablation electrode 10 is the electricityCartridge 100, rear end is the electrode body 200.The electrode body 200 is metal catheter.The electrode tip 100 is triangular pyramidElectrode tip, the bare electrode depth of triangular pyramid electrode tip 100 is 5~50mm.The circumferentially angle on the electrode tip 10030 °~330 ° transparent first insulating barriers 230 of spraying.In use, the exposed side of the radio-frequency ablation electrode 10I.e., the part do not wrapped up by first insulating barrier 230 plays RF ablation effect to focus to breach.In the developing layer250 and scale layer 260 on cover transparent second insulating barrier 240 so that whole radio-frequency ablation electrode 10 only has the radio frequencyRF ablation effect is played to focus in ablation portion 210.The setting that developing layer 250 and the scale layer 260 is facilitates doctorThe useful effect position and direction of electrode are observed in implementation process.
In use, operation doctor can need the RF ablation device 20 according to clinic and focus situation selects to closeThe electrode of exposed depth and angle is fitted, determines that electrode rises in human body by the cue mark 310 on the handle 300The direction of effect and angle.Therefore, when RF energy is launched, only electrode exposed part works, and other are by described firstThe part of the insulating barrier 240 of insulating barrier 230 and second covering can not conduct RF energy, it is achieved thereby that accurately controlling RF energyThe depth of transmitting and direction, only to need melt pathological tissues carry out RF ablation, without to its neighbouring vitals,Blood vessel and nerve produce damage.
In one embodiment, as shown in figure 4, the inside of the electrode body 200 can set water inlet pipe 410, thermometricDevice 420 and outlet pipe 430.The pipeline of water circulation is set in the inside of the electrode body 200, makes the radio-frequency ablation electrode10 temperature in use can be controlled effectively.Water in the radio-frequency ablation electrode 10 is through the water inlet pipe410 enter the inside of the electrode body 200.The electrode body 200 can be obtained in real time at the temperature measuring equipment 420Temperature.After thermometric, water flows out from the outlet pipe 430 again.The radio frequency can be understood by the water temperature obtained in real time to disappearMelt the behaviour in service of electrode 10.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned realityApply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneouslyCan not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the artSay, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present inventionScope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.