CN204971568U - Radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter - Google Patents
Radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter Download PDFInfo
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- CN204971568U CN204971568U CN201520434410.7U CN201520434410U CN204971568U CN 204971568 U CN204971568 U CN 204971568U CN 201520434410 U CN201520434410 U CN 201520434410U CN 204971568 U CN204971568 U CN 204971568U
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- ablation catheter
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Abstract
The utility model provides a radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter. This radio frequency melts the pipe pipe shaft that the pipe has rectangular shape, is equipped with helical shape electrode support at the front end of pipe pipe shaft, and electrode support is last to be provided with a plurality of electrodes, is provided with brake valve lever in the rear end of pipe pipe shaft, be provided with slidable in one of them lumen of electrode support and pipe pipe shaft and support adherence regulation silk, support adherence regulation silk and divide into flexibility section of keeping away from brake valve lever and the rigidity section of being close to brake valve lever. Above -mentioned radio frequency melts the pipe have been reduced the radio frequency and has melted the degree of difficulty that the pipe got into guide pipe / sheath pipe through adjusting the structure of silk and improves supporting the adherence, showing.
Description
Technical field
This utility model relates to a kind of radio frequency ablation catheter of helical structure, relates to the radio-frequency (RF) ablation equipment comprising above-mentioned radio frequency ablation catheter simultaneously, belongs to interventional medical device technical field.
Background technology
In radio frequency ablation system, radio frequency ablation catheter is for getting involved human vas and carrying out the Primary Component of radio-frequency (RF) energy release.Wherein, radio-frequency electrode is arranged on the support of radio frequency ablation catheter front end, and support for carrying radio-frequency electrode, and was expanded adherent before radio frequency starts, and radio frequency terminates after-contraction recession.The flexible size of support directly gets involved in human vas due to radio-frequency ablation procedure and carries out, so will adapt with the diameter of human vas.
Blood vessel diameter in human body is different because of the difference of ablation site.Meanwhile, the diameter of human vas also varies with each individual, and such as, arteriorenal diameter is greatly between 2 ~ 12mm, and difference is larger.In the prior art, the flexible size of the electrode tip of radio frequency ablation catheter is generally fixing, cannot adapt to the diameter dimension requirement of different human body blood vessel, narrower to the coverage rate of the human vas of different-diameter.Therefore, when carrying out radio-frequency ablation procedure to different patients, usually need change different size, model radio frequency ablation catheter melt.Nonetheless, when also there will be operation in some cases, the problem that radio-frequency electrode cannot be simultaneously adherent, affects surgical effect.
The structure of radio frequency ablation catheter according to electrode different with the shape of electrode suppor be divided into multiple, such as: balloon type, puncture needle-like, screw type and valvular structure etc.Wherein, to be designed to the use of the radio frequency ablation catheter of helical structure comparatively extensive for electrode suppor.The radio frequency ablation catheter of existing helical structure is mainly through shaping in advance to electrode suppor, then under the assistance of guiding catheter/sheath pipe (disclosed in the such as pipe of sheath disclosed in Chinese utility model patent ZL200920172984.6 and Chinese invention application CN201210480777.3 guiding catheter), intravasation is inner, then by reach radio frequency ablation catheter, or move guiding catheter/sheath pipe after passing through, conduit is shifted out in sheath pipe/guiding catheter, thus makes conduit return to modular shapes behind target approach position.Therefore, existing radio frequency ablation catheter must by guiding catheter/sheath pipe ability target approach region, and difficulty is very large, and complex steps, auxiliary facilities is more.
Summary of the invention
Primary technical problem to be solved in the utility model is the radio frequency ablation catheter of the helical structure providing a kind of improvement.
Another technical problem to be solved in the utility model is to provide a kind of radio-frequency (RF) ablation equipment comprising above-mentioned radio frequency ablation catheter.
In order to realize above-mentioned technical purpose, this utility model adopts following technical scheme:
A radio frequency ablation catheter for helical structure, has the conduit pipe shaft of strip, is provided with spiral electrode suppor, described electrode suppor is provided with multiple electrode in the front end of described conduit pipe shaft, and the rear end of described conduit pipe shaft is provided with joystick; Wherein,
Be provided with in one of them tube chamber of described electrode suppor and described conduit pipe shaft and slidably support adherent adjustment silk, the adherent adjustment silk of described support is divided into the compliant section away from joystick and the rigid section near joystick.
Wherein more preferably, the head end of described support adherent adjustment silk through the outside being limited in described electrode suppor after described electrode suppor, and can move to the direction away from conduit relative to the far-end of described electrode suppor; The tail end of described support adherent adjustment silk passes and is fixed on described joystick from described conduit pipe shaft, and described joystick moves forward and backward for controlling the adherent adjustment silk of described support.
Wherein more preferably, when the adherent adjustment silk of described support moves forward to rigid section, in electrode suppor, compliant section is when electrode suppor is outer, and described electrode suppor is under the effect of the rigid section of the adherent adjustment silk of described support, and spiral diameter reduces, length, is tending towards linear type;
When the adherent adjustment silk recession of described support is to when compliant section is in electrode suppor, described electrode suppor recovers spiral type.
Wherein more preferably, described joystick is provided with the button moving member that the tail end of the adherent adjustment silk with described support is fixing, by changing the position of button moving member on described joystick, controls the adherent adjustment silk of described support and moving.
Wherein more preferably, the head end of the adherent adjustment silk of described support is provided with developing head.
Wherein more preferably, the adherent adjustment silk of described support has the bifurcated extended back and regulates silk, described bifurcated regulates the head end of silk to be fixed on the head end of the adherent adjustment silk of described support, or described bifurcated regulates the head end of silk to be fixed on a certain position of described compliant section, or described bifurcated regulates silk to be the filament outwards separated from described compliant section, described bifurcated regulates the hole of rear end from the outer tube being arranged on described electrode suppor of silk to pass, and from being arranged on described electrode suppor or catheter tube hole with it penetrates, then extend to outside pipe along the tube chamber of described conduit pipe shaft inside side by side with the rigid section of described support adherent adjustment silk, and enter joystick inside, be fixed on the second control piece.
Wherein more preferably, described electrode suppor comprises outer tube, the excircle of described outer tube is embedded with multiple electrode, the inside of described outer tube is provided with multiple tube chamber, is wherein respectively arranged with one group of thermocouple wire and radio frequency line in part tube chamber; The inside of each described electrode is provided with one group of radio frequency line and thermocouple wire, described radio frequency line and described Electrode connection, and described thermocouple wire and described electrode insulation are arranged.
Wherein more preferably, described electrode suppor inside is provided with spiral fixed wire.
A kind of radio-frequency (RF) ablation equipment, comprises above-mentioned radio frequency ablation catheter, the joystick be connected with described radio frequency ablation catheter and radio-frequency (RF) ablation main frame.
The radio frequency ablation catheter of the helical structure that this utility model provides, by improving the structure supporting adherent adjustment silk, not by under the prerequisite of other equipment, can change the diameter of conduit spiral section.On the one hand, overlapped with electrode suppor by the rigid section controlling to support adherent adjustment silk, spiral diameter can be made to reduce, length, be tending towards linear type, thus adapt to guiding catheter/sheath pipe, simultaneously, when supporting the recession of adherent adjustment silk and overlapping to compliant section and electrode suppor, electrode suppor recovers nature spiral type.The radio frequency ablation catheter of above-mentioned helical structure, overlapped with electrode suppor by the different parts (compliant section or rigid section) controlling to support adherent adjustment silk, change the form of electrode suppor, be very easy to the movement of spiral electrode support at target tube chamber, convenient operation and structure is simple.Further, by setting up the soft seal wire of straight peen or the soft seal wire of elbow in the front end supporting adherent adjustment silk, the adherent adjustment silk of this support can also substitute guiding catheter/sheath pipe, and direct intravasation, simplifies operation technique.
Accompanying drawing explanation
Fig. 1 a is the structural representation of the radio frequency ablation catheter of helical structure;
Fig. 1 b is the schematic side view of radio frequency ablation catheter shown in Fig. 1 a;
Fig. 1 c is the structural representation of the joystick of radio frequency ablation catheter shown in Fig. 1 a;
Fig. 2 is in the radio frequency ablation catheter of helical structure provided by the utility model, the schematic cross-section of electrode suppor;
Fig. 3 be provided by the utility model the first support the structural representation of adherent adjustment silk;
Fig. 4 supports adherent adjustment silk rigid section when overlapping with electrode suppor, the D-D generalized section of the radio frequency ablation catheter of helical structure;
Fig. 5 is the I portion close-up schematic view of the radio frequency ablation catheter of helical structure shown in Fig. 4;
Fig. 6 a supports adherent adjustment silk compliant section when overlapping with electrode suppor, the structural representation of the radio frequency ablation catheter of helical structure;
Fig. 6 b is the schematic side view of radio frequency ablation catheter shown in Fig. 6 a;
Fig. 7 a is button controls reach wire feed, when control line rigid section overlaps with electrode suppor, and the view of joystick;
Fig. 7 b moves wire drawing after button controls, when control line compliant section overlaps with electrode suppor, and the view of joystick;
Fig. 8 is the structural representation that the second provided by the utility model supports adherent adjustment silk;
Fig. 9 is that provided by the utility model the third supports the structural representation of adherent adjustment silk;
Figure 10 is the generalized section that use the 4th kind supports the radio frequency ablation catheter of adherent adjustment silk;
Figure 11 is the structural representation of the 5th kind of adherent adjustment silk of support provided by the utility model;
Figure 12 is the structural representation of the 6th kind of adherent adjustment silk of support provided by the utility model;
Figure 13 is the structural representation of another embodiment of the joystick of radio frequency ablation catheter.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, description concrete is in detail carried out to technology contents of the present utility model.
Composition graphs 1a to Fig. 1 c is known, the radio frequency ablation catheter of the helical structure that this utility model provides, comprise the conduit pipe shaft of strip, spiral electrode suppor is provided with in conduit pipe shaft front end, the spiral initial diameter of electrode suppor is Φ D, and initial length is A-1 (see Fig. 1 a and Fig. 1 b), more preferably, Φ D should be greater than the diameter of target tube chamber, is provided with joystick 8 (see Fig. 1 c) in the rear end of conduit pipe shaft.In actual fabrication, electrode suppor can with conduit pipe shaft integral production, electrode suppor is conduit pipe shaft front end is spiral part; Electrode suppor also can independently make, and then connects as one with conduit pipe shaft.Multiple electrodes 2 that spiral electrode suppor comprises outer tube 1 and is arranged on outer tube 1.Electrode 2 can be embedded block type electrode on the excircle of outer tube 1 or ring electrode, the upper surface of electrode 2 can with the flush with outer surface of outer tube 1 or the outer surface a little more than outer tube 1, the upper surface of electrode 2 also can lower than the outer surface of outer tube 1.
The inside of electrode suppor and conduit pipe shaft is respectively arranged with for holding the tube chamber supporting adherent adjustment silk 6, the respective tube intracavity of electrode suppor and conduit pipe shaft is provided with the adherent adjustment silk 6 (see Fig. 2) of support, supporting adherent adjustment silk 6 can at the respective tube intracavity slide anteroposterior of electrode suppor and conduit pipe shaft, for holding the centre bore that the tube chamber supporting adherent adjustment silk 6 can be electrode suppor and conduit pipe shaft, also can be of being distributed in multiple tube chambers of central periphery.As shown in Figure 1a, support the head end of adherent adjustment silk 6, through the outside being limited in electrode suppor after electrode suppor, and can move to the direction away from conduit pipe shaft relative to the far-end of electrode suppor, the head end supporting adherent adjustment silk 6 is provided with developing head 63; As illustrated in figure 1 c, the tail end supporting adherent adjustment silk 6 passes and is fixed on joystick 8 from the centre bore of conduit pipe shaft, and joystick 8 moves forward and backward for controlling to support adherent adjustment silk 6.Joystick 8 is provided with button controls 9, support the tail end of adherent adjustment silk 6 through being fixed on button controls 9 after the centre bore of conduit pipe shaft inside, by changing the position of button moving member 9 on joystick 8, controlling to support adherent adjustment silk 6 and moving forward and backward.
The radio frequency ablation catheter of helical structure provided by the utility model, by improving the structure supporting adherent adjustment silk 6, achieve the diameter change of electrode suppor, make it to be easy to insert guiding catheter/sheath pipe and target tube chamber, meanwhile, nature spiral type can be recovered after it arrives target tube chamber.As shown in Figure 3, in this radio frequency ablation catheter, support adherent adjustment silk 6 and there are the compliant section 61 (near head end) away from joystick 8 and rigid section 62 (near the tail end) two parts near joystick 8; The length of compliant section 61 is excellent to be not less than the length of the outer tube 1 of electrode suppor, and certainly, in particular cases, the length of compliant section 61 also can be less than the length of the outer tube 1 of electrode suppor.Changed by joystick 8 and support adherent adjustment silk 6 and the overlapping region of electrode suppor, the spiral diameter of electrode suppor can be changed.
When the adherent adjustment silk 6 of support moves forward, compliant section 61 is when electrode suppor is outer in electrode suppor to make its rigid section 62, and the spiral in shape of electrode suppor is under the effect of rigid section 62 supporting adherent adjustment silk 6, and diameter reduces, and length, is tending towards linear type; Ideally, electrode suppor can present linearity A as shown in Figure 4.When the adherent adjustment silk 6 of support retreats, when making its compliant section 61 enter electrode suppor, electrode suppor bends gradually along with entering of compliant section, until when not having rigid section 62 to only have compliant section 61 in electrode suppor (see Fig. 6 a), electrode suppor recovers spiral type, its diameter of phi C is equal or close to the diameter (see Fig. 6 b) of target tube chamber, and now, the spiral type length A-2 of electrode suppor is greater than initial length A-1.That is, in this radio frequency ablation catheter, move forward by controlling to support adherent adjustment silk 6, the outer tube 1 of its rigid section 62 and electrode suppor is overlapped, the spiral diameter of electrode suppor can be reduced, make it to be suitable for entering guiding catheter/sheath pipe or target tube chamber, meanwhile, arrive target tube intracavity at electrode suppor, adherent adjustment silk 6 is supported by post-tensioning, the outer tube 1 of its compliant section 62 and electrode suppor is overlapped, electrode suppor can be made to recover spiral type, realize adherent.The position of button controls 9 on joystick 8 can be as shown in figs. 7 a and 7b, when button moving member 9 moves to the position in left side, compliant section 61 exposes, rigid section 62 overlaps with the outer tube 1 of electrode suppor, when button moving member 9 moves to right positions, the compliant section 61 supporting adherent adjustment silk 6 overlaps with the outer tube of electrode suppor.
And, after electrode suppor natural extension is adherent, supports adherent adjustment silk 6 by pulling further, also can finely tune the adherent situation of electrode 2, make electrode 2 and tube wall close contact, improve the adhered state of electrode 2.Above-mentioned radio frequency ablation catheter, the inside of electrode suppor is arranged on owing to supporting adherent adjustment silk 6, again pull after the compliant section 61 supporting adherent adjustment silk 6 overlaps with the outer tube of electrode suppor and support adherent adjustment silk 6, the movable amplitude supporting adherent adjustment silk 6 is less, therefore only for finely tuning the shape of electrode suppor.And when selecting radio frequency ablation catheter, suggestion selects spiral diameter Φ D to be greater than or the radio frequency ablation catheter of diameter close to target tube chamber, like this, when electrode suppor is in target tube chamber automatic expansion, recover in spiral process, can be closely adherent under the effect of blood vessel wall.Above-mentioned radio frequency ablation catheter, target tube chamber diameter being less than or equal to spiral type initial diameter all has good adherent effect.Because the diameter range of human body renal artery blood vessel is between 2 ~ 12mm, in order to ensure above-mentioned radio frequency ablation catheter for more slightly and thinner blood vessel all there is good adaptability, suggestion selects the radio frequency ablation catheter of Φ D>12mm to use.
In addition, this utility model additionally provides and supports the radio frequency ablation catheter (see Figure 10,11 and 12) that adherent adjustment silk 6 has branch, and now, the spiral initial diameter Φ D of electrode suppor can be less than the diameter of target tube chamber.Support adherent adjustment silk 6 and there is the branch extended back from compliant section 61, i.e. Figure 10, bifurcated in Figure 11 and Figure 12 regulates silk 66, bifurcated regulates the head end of silk 66 to be fixed on the head end supporting adherent adjustment silk 6, or bifurcated regulates the head end of silk 66 and a certain position of compliant section 61 to fix, or bifurcated regulates silk 66 to be the filaments outwards separated from compliant section 61, bifurcated regulates in the hole 11 of the rear end of silk 66 from the outer tube 1 being arranged on electrode suppor and passes, and hole 15 from the outer tube being arranged on electrode suppor or catheter tube hole with it penetrate, then extend to outside pipe along the tube chamber of conduit pipe shaft inside side by side with the adherent adjustment silk 6 of support, and enter the inside of joystick 8, be fixed on second control piece (or independent second control piece arranged) of joystick 8.When using the radio frequency ablation catheter of above-mentioned helical structure in thicker blood vessel, electrode suppor cannot be adherent after recovering nature spiral type, now, by pulling the branch's (namely bifurcated regulates silk 66) supporting adherent adjustment silk 6, the spiral diameter of electrode suppor can be expanded, make it be adapted to the thicker blood vessel of diameter, have the structure content about this part hereafter specifically telling about.
Below the ins and outs of the radio frequency ablation catheter of the helical structure that this utility model provides are further described.
The outer tube 1 of electrode suppor can be single lumen catheter or multi-lumen tube, and outer tube 1 can adopt macromolecular material or metal material to make, such as the material such as rustless steel or memorial alloy.Outer tube 1 can adopt straight tube material, bar processes, and A section also can be used to be made into spiral special shape pipe.As shown in Figure 2 and Figure 5, when outer tube 1 uses multi-lumen tube, outside the inside of the outer tube 1 of electrode suppor removing centre bore, also be provided with multiple tube chamber, divide in the middle in tube chamber and be respectively arranged with one group of radio frequency line 3 and thermocouple wire 4, thermocouple wire 4 is isolated with radio frequency line 3 and electrode 2 by thermocouple wire head end insulating barrier 5 is coated, and the head end often organizing radio frequency line 3 and thermocouple wire 4 is arranged on the inside of single electrode, wherein, the head end of radio frequency line 3 closely welds with electrode 2; The head end welding of thermocouple wire 4, and insulate with electrode 2 and arrange.In one of them tube chamber of outer tube 1, be also provided with spiral fixed wire 7, spiral fixed wire 7 is fixed in the A section of helix-deformed region, for the spiral type of support electrode support.Certainly, also directly electrode suppor can be shaped into spiral type, thus save spiral fixed wire 7, such as, when using memorial alloy to make outer tube, the setting of spiral fixed wire 7 can be saved.
Electrode 2 is fixed on outer tube 1, and its outer surface can lower than the outer surface that also can be not less than outer tube 1.Circumferentially direction is uniform or not uniform in the spiral type of electrode suppor for multiple electrode 2, and multiple electrode can be more than 1 circle, 1 circle or be less than 1 circle distribution on electrode suppor.The inner surface of electrode 2 and radio frequency line 3 firm welding; The head end of thermocouple wire 4 welds together, and is coated with after thermocouple wire head end insulating barrier 5 insulate at the head end weld of thermocouple wire 4, and be arranged on the inside of electrode 2, thermocouple wire head end insulating barrier 5 can be heat-shrink tube or other sleeve pipes.
Be illustrated below in conjunction with the structure of accompanying drawing to the adherent adjustment silk of multiple support that above-mentioned radio frequency ablation catheter is suitable for.
As shown in Figure 3, this utility model provide the first support adherent adjustment silk 6 and comprise compliant section 61 near head end and remaining rigid section 62 two parts, the head end supporting adherent adjustment silk 6 can arrange developing head 63, for developing to picture to target tube chamber.
As shown in Figure 8 and Figure 9 two kinds support adherent adjustment silk, comprise compliant section 61 and rigid section 62, simultaneously, the soft seal wire of straight peen 64 or the soft seal wire 65 of elbow is also provided with in the front end of the compliant section 61 supporting adherent adjustment silk 6, thus, make the adherent adjustment silk 6 of this support can substitute guiding catheter/sheath pipe, direct intravasation, simplifies operation technique.Owing to eliminating guiding catheter/sheath pipe, the diameter of the conduit of intravasation can reduce on a large scale, facilitates the movement of conduit.
Three kinds of adherent adjustment silks of support as shown in Figure 10 to Figure 12 have bifurcated respectively and regulate silk 66, three kinds of bifurcateds to regulate the structure of silks 66 slightly different.Specifically, support in adherent adjustment silk 6 the 4th shown in Figure 10 kind, bifurcated regulates the head end of silk 66 to fix with the head end supporting adherent adjustment silk 6, then extend back together with compliant section 61, bifurcated regulates the hole 11 of rear end from the outer tube 1 being arranged on electrode suppor of silk 66 to pass, and from being arranged on electrode suppor or catheter tube another hole 15 with it penetrates corresponding tube chamber, then extend to outside pipe along the tube chamber of conduit pipe shaft inside side by side with the adherent adjustment silk 6 of support, and be fixed on the second control piece of joystick 8.
Support in adherent adjustment silk 6 the 5th shown in Figure 11 kind, bifurcated regulates the head end of silk 66 and a certain position of compliant section 61 to fix, or bifurcated regulates silk 66 to be the filaments outwards separated from compliant section 61, then bifurcated regulates the hole of rear end from the outer tube 1 being arranged on electrode suppor of silk 66 to pass, and from being arranged on electrode suppor or catheter tube another hole with it penetrates, then extend to outside pipe along the tube chamber of conduit pipe shaft inside side by side with the adherent adjustment silk 6 of support, and be fixed on the second control piece of joystick.
Support in adherent adjustment silk 6 the 6th shown in Figure 12 kind, bifurcated regulates the set-up mode of silk and the 4th kind to support the similar of adherent adjustment silk.Just compliant section adopts spring structure, and bifurcated regulates silk 66 to be the filaments outwards separated from a certain position of spring 61-1, and bifurcated regulates the head end of silk 66 to be fixed on spring.Bifurcated regulates the hole of rear end from the outer tube 1 being arranged on electrode suppor of silk 66 to pass, and from being arranged on electrode suppor or catheter tube another hole with it penetrates, then extend to outside pipe along the tube chamber of conduit pipe shaft inside side by side with the rigid section 62-1 supporting adherent adjustment silk 6, and enter joystick 8, be fixed on the second control piece of joystick.
Above-mentioned three kinds are used to support adherent adjustment silk, in the blood vessel being greater than spiral type initial diameter Φ D at diameter when radio frequency ablation catheter or target tube chamber, after recovering nature spiral type, still cannot be adherent, bifurcated is pulled to regulate silk 66 by the second control piece, the diameter of electrode suppor can be expanded, make electrode adherent.It should be noted that, mode joystick 8 being arranged the second control piece can be similar with the mode arranging button controls 9, and above-mentioned second control piece also can independently relative to joystick 8 be arranged, as shown for example in fig.13.After bifurcated regulates silk 66 and the adherent adjustment silk 6 of support to enter joystick 8 side by side, the end 67 supporting adherent adjustment silk 6 is fixed on button controls 9, changes by promoting button controls 9 form that its position on joystick 8 can change electrode suppor; And bifurcated regulate silk 66 from be arranged on joystick 8 all the other sides an opening stretch out, and fix the second control piece 10 at its end 68, by pulling the second control piece 10 in the outside of joystick 8, the spiral diameter of electrode suppor can be changed further.
In the adherent adjustment silk of support shown in Figure 10 to Figure 12, also sets forth the compliant section of multiple different structure.Wherein, it is identical that compliant section 61 and first three shown in Fig. 3, Fig. 8, Fig. 9 of the support adherent adjustment silk 6 of Figure 10 plant the structure supporting adherent adjustment silk, adopts filament or hose construction compliant section 61.The filament that compliant section 61 can adopt diameter to be less than rigid section is made, and compliant section 61 and rigid section 62 can be one-body molded or also can be assembled by the filament of two different-diameters (such as, using welding procedure to assemble) by same material.Compliant section 61 can also adopt hose construction.And the adherent adjustment silk of support shown in Figure 12, compliant section 61-1 adopts spring structure, when compliant section 61-1 is positioned at electrode suppor inside, because spring has good bending property, electrode suppor can recover spiral type under the effect of spiral fixed wire 7, and compliant section 61-1 is out of shape thereupon.
In actual clinical treatment, radio frequency ablation catheter provided by the utility model and radio-frequency (RF) ablation equipment can be applied to the nerve ablation of different parts, multiple different-diameter blood vessel or trachea.Such as, be applied to nerve ablation treatment obstinate hypertension in renal artery, be applied to nerve ablation treatment diabetics in coeliac artery, and for example, be applied to trachea/bronchus vagus nerve branch ablation asthmatic patient, and be applied to duodenum vagus nerve branch ablation duodenal ulcer patients; In addition, other blood vessels or the endotracheal nerve ablation such as renal pelvis is interior, pulmonary artery is interior can also be used for.It should be noted that, radio frequency ablation catheter provided by the utility model is not limited to the above-mentioned application enumerated in clinical treatment, also can be used for the nerve ablation at other positions.
Introduce the radio frequency ablation catheter that this utility model provides above, this utility model provides the radio-frequency (RF) ablation equipment comprising above-mentioned radio frequency ablation catheter simultaneously.The removing of this radio-frequency (RF) ablation equipment comprises outside above-mentioned radio frequency ablation catheter, also comprises the joystick and radio-frequency (RF) ablation main frame that are connected with above-mentioned radio frequency ablation catheter.Wherein, the adherent adjustment silk of support (and bifurcated adjustment silk) of electrode suppor inside through catheter tube after one's death correspondence be connected on joystick, pulled by joystick and support the shape that adherent adjustment silk can change electrode suppor, be convenient to target approach tube chamber, and well adherent at target tube intracavity.Radio frequency line in electric machine support, thermocouple wire are connected in the corresponding circuits in radio-frequency (RF) ablation main frame respectively by conduit pipe shaft, thus realize radio-frequency (RF) ablation main frame to the radio frequency control of multiple electrode and temperature monitoring.Because the setting of joystick and arranging of radio-frequency (RF) ablation main frame can be published in first patent application see the applicant, no longer its concrete structure is described in detail at this.
In sum, the structure that this utility model uses for reference guiding wire is improved the adherent adjustment silk of the support in the radio frequency ablation catheter of helical structure, but both concrete effects exist different.In guiding wire, compliant section is used for Initial adaption shape of blood vessel, changes the trend of guiding wire, thus makes it arrive target tube chamber smoothly; Rigid section is used for supporting guiding wire.And in the radio frequency ablation catheter of the helical structure provided at this utility model, by control electrode support and the overlapping of zones of different supporting adherent adjustment silk 6, change the form of electrode suppor, the difficulty that radio frequency ablation catheter enters guiding catheter/sheath pipe can be alleviated, structure is simple, convenient operation.When the adherent adjustment silk 6 of support moves forward to rigid section and spiral electrode support 2 overlaps, spiral electrode support diameter under the effect of rigid section supporting adherent adjustment silk 6 reduces, length, be tending towards linear type, thus be convenient to enter guiding catheter/sheath pipe, be convenient to whole radio frequency ablation catheter simultaneously and move in target tube chamber; And when supporting adherent adjustment silk 6 and dropping back to compliant section and the coincidence of spiral electrode support, spiral electrode support recovers spiral type, can be adherent; Further, supporting adherent adjustment silk by continuing to pull back, the adhered state of electrode can also be improved.In addition, by setting up the soft seal wire of straight peen or the soft seal wire of elbow in the front end supporting adherent adjustment silk, the adherent adjustment silk of this support can also substitute guiding catheter/sheath pipe, and direct intravasation, simplifies operation technique.
The foregoing is only the schematic detailed description of the invention of this utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of this utility model protection.
Claims (13)
1. a radio frequency ablation catheter for helical structure, has the conduit pipe shaft of strip, is provided with spiral electrode suppor, described electrode suppor is provided with multiple electrode in the front end of described conduit pipe shaft, and the rear end of described conduit pipe shaft is provided with joystick; It is characterized in that:
Be provided with in one of them tube chamber of described electrode suppor and described conduit pipe shaft and slidably support adherent adjustment silk, the adherent adjustment silk of described support is divided into the compliant section away from joystick and the rigid section near joystick.
2. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The head end of described support adherent adjustment silk through the outside being limited in described electrode suppor after described electrode suppor, and can move to the direction away from conduit relative to the far-end of described electrode suppor; The tail end of described support adherent adjustment silk passes and is fixed on described joystick from described conduit pipe shaft, and described joystick moves forward and backward for controlling the adherent adjustment silk of described support.
3. the radio frequency ablation catheter of helical structure as claimed in claim 1 or 2, is characterized in that:
When the adherent adjustment silk of described support moves forward to rigid section, in electrode suppor, compliant section is when electrode suppor is outer, and described electrode suppor is under the effect of the rigid section of the adherent adjustment silk of described support, and spiral diameter reduces, length, is tending towards linear type;
When the adherent adjustment silk recession of described support is to when compliant section is in electrode suppor, described electrode suppor recovers spiral type.
4. the radio frequency ablation catheter of helical structure as claimed in claim 3, is characterized in that:
Described joystick is provided with the button moving member that the tail end of the adherent adjustment silk with described support is fixing, by changing the position of button moving member on described joystick, controls the adherent adjustment silk of described support and moving.
5. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The head end of the adherent adjustment silk of described support is provided with developing head.
6. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The adherent adjustment silk of described support has the bifurcated extended back and regulates silk, described bifurcated regulates the head end of silk to be fixed on the head end of the adherent adjustment silk of described support, or described bifurcated regulates the head end of silk to be fixed on a certain position of described compliant section, or described bifurcated regulates silk to be the filament outwards separated from described compliant section, described bifurcated regulates the hole of rear end from the outer tube being arranged on described electrode suppor of silk to pass, and from being arranged on described electrode suppor or catheter tube hole with it penetrates, then extend to outside pipe along the tube chamber of described conduit pipe shaft inside side by side with the rigid section of described support adherent adjustment silk, and enter joystick inside, be fixed on the second control piece.
7. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The length of described compliant section is not less than the length of the outer tube of described electrode suppor.
8. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The soft seal wire of straight peen or the soft seal wire of elbow is provided with in the front end of described compliant section.
9. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
The filament that described compliant section adopts diameter to be less than described rigid section is made, described compliant section and described rigid section is one-body molded or assembled by the filament of two different-diameters.
10. the radio frequency ablation catheter of helical structure as claimed in claim 1, is characterized in that:
Described compliant section adopts spring structure or hose construction.
The radio frequency ablation catheter of 11. helical structures as claimed in claim 1, is characterized in that:
Described electrode suppor comprises outer tube, the excircle of described outer tube is embedded with multiple electrode, the inside of described outer tube is provided with multiple tube chamber, is wherein respectively arranged with one group of thermocouple wire and radio frequency line in part tube chamber; The inside of each described electrode is provided with one group of radio frequency line and thermocouple wire, described radio frequency line and described Electrode connection, and described thermocouple wire and described electrode insulation are arranged.
The radio frequency ablation catheter of 12. helical structures as claimed in claim 1, is characterized in that:
Described electrode suppor inside is provided with spiral fixed wire.
13. 1 kinds of radio-frequency (RF) ablation equipment, is characterized in that comprising the radio frequency ablation catheter in claim 1 ~ 12 described in any one, the joystick be connected with described radio frequency ablation catheter and radio-frequency (RF) ablation main frame.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434410.7U CN204971568U (en) | 2015-06-19 | 2015-06-19 | Radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter |
| PCT/CN2016/073378 WO2016124138A1 (en) | 2015-02-03 | 2016-02-03 | Radio-frequency ablation catheter having spiral structure, and equipment thereof |
| EP16746133.4A EP3254635B1 (en) | 2015-02-03 | 2016-02-03 | Radio-frequency ablation catheter having spiral structure, and equipment thereof |
| ES16746133T ES2955930T3 (en) | 2015-02-03 | 2016-02-03 | Radiofrequency ablation catheter with spiral structure and equipment thereof |
| EP18162451.1A EP3360497A1 (en) | 2015-02-03 | 2016-02-03 | Radio-frequency ablation catheter having spiral structure and device thereof |
| US15/548,672 US10646272B2 (en) | 2015-02-03 | 2016-02-03 | Radio-frequency ablation catheter having spiral structure and device thereof |
| JP2017558612A JP6716607B2 (en) | 2015-02-03 | 2016-02-03 | High-frequency ablation catheter with spiral structure and its equipment |
| JP2020072220A JP6987920B2 (en) | 2015-02-03 | 2020-04-14 | High frequency ablation catheter with spiral structure and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434410.7U CN204971568U (en) | 2015-06-19 | 2015-06-19 | Radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter |
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| Publication Number | Publication Date |
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| CN204971568U true CN204971568U (en) | 2016-01-20 |
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| CN201520434410.7U Withdrawn - After Issue CN204971568U (en) | 2015-02-03 | 2015-06-19 | Radiofrequency ablation catheter of spiral structure and device with radiofrequency ablation catheter |
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| CN (1) | CN204971568U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193497A (en) * | 2014-12-29 | 2015-12-30 | 上海魅丽纬叶医疗科技有限公司 | Radio-frequency ablation catheter of spiral structure and equipment thereof |
| WO2016124138A1 (en) * | 2015-02-03 | 2016-08-11 | 上海魅丽纬叶医疗科技有限公司 | Radio-frequency ablation catheter having spiral structure, and equipment thereof |
| CN113116512A (en) * | 2019-12-31 | 2021-07-16 | 上海微创电生理医疗科技股份有限公司 | Ablation electrode assembly and ablation catheter |
-
2015
- 2015-06-19 CN CN201520434410.7U patent/CN204971568U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193497A (en) * | 2014-12-29 | 2015-12-30 | 上海魅丽纬叶医疗科技有限公司 | Radio-frequency ablation catheter of spiral structure and equipment thereof |
| CN105193497B (en) * | 2014-12-29 | 2017-11-21 | 上海魅丽纬叶医疗科技有限公司 | The radio frequency ablation catheter and its equipment of a kind of helical structure |
| WO2016124138A1 (en) * | 2015-02-03 | 2016-08-11 | 上海魅丽纬叶医疗科技有限公司 | Radio-frequency ablation catheter having spiral structure, and equipment thereof |
| US10646272B2 (en) | 2015-02-03 | 2020-05-12 | Shanghai Golden Leaf Med Tec Co., Ltd. | Radio-frequency ablation catheter having spiral structure and device thereof |
| CN113116512A (en) * | 2019-12-31 | 2021-07-16 | 上海微创电生理医疗科技股份有限公司 | Ablation electrode assembly and ablation catheter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171121 |