CN106308921A - Ablation device having pressure detection function - Google Patents
Ablation device having pressure detection function Download PDFInfo
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- CN106308921A CN106308921A CN201510388085.XA CN201510388085A CN106308921A CN 106308921 A CN106308921 A CN 106308921A CN 201510388085 A CN201510388085 A CN 201510388085A CN 106308921 A CN106308921 A CN 106308921A
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- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000013507 mapping Methods 0.000 claims description 20
- 238000005452 bending Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
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- 239000000806 elastomer Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000001802 infusion Methods 0.000 abstract 3
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 210000001519 tissue Anatomy 0.000 description 21
- 238000010586 diagram Methods 0.000 description 9
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- 238000002372 labelling Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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- 238000010276 construction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
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- 230000006793 arrhythmia Effects 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 210000005003 heart tissue Anatomy 0.000 description 1
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- 238000007674 radiofrequency ablation Methods 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
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Abstract
The invention relates to the field of ablation devices, and particularly relates to an ablation device having a pressure detection function. The ablation device includes a main tube which can be drawn and bent by a drawing steel wire; a tail end electrode for ablation is arranged on a head of the main tube; an infusion tube communicating with the inner part of the tail end electrode is arranged in the main tube and is used for allowing liquid output of an surface of the tail end electrode; the center of the tail of the tail end electrode is connected to an elastic member; the elastic member is arranged on an outer wall of the infusion tube; the outer wall of the infusion tube is connected to the main tube through a pipe; the elastic member includes an intermediate small-diameter section, wherein the diameter of the small-diameter section is less than the diameter of two side sections of the elastic member; the elastic member is configured to deform with the pressure of a tissue acted on the tail end electrode; and a sensor for measuring the pressure according to the deformation of the elastic member is arranged on the elastic member. The ablation device is accurate in pressure measurement, is low in production cost, and is easy to operate.
Description
Technical field
The present invention relates to ablation apparatus field, particularly to a kind of ablating device with pressure detecting.
Background technology
Arrhythmia is one of common ARR disease in the world, application catheter carries out radio-frequency ablation procedure and is widely used to treat such disease clinically, radio-frequency (RF) energy, confirms 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 to melt by conduit to electrode and the position of electrode contact and surrounding myocardium tissue.
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.
Existing technology is the pressure that reclines using electromagnetism or optical technology to measure 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 CN103908337AZ 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 a kind of pressure detecting is more accurately, manufacturing cost is lower, the ablating device of simple operation.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of ablating device with pressure detecting, it is used for ablation tissue inserted into the patient, it main pipe including being pulled bending by traction steel wire, the head end of main pipe is provided with the end electrodes for melting, described main pipe is internally provided with the intrusion pipe that connect internal with end electrodes, for for end electrodes surface output liquid
The center of described end electrodes afterbody is connected with elastic component, described elastic component is arranged on intrusion pipe outer wall, the outer wall of elastic component is connected with described main pipe by a body, described elastic component includes the path section at middle part, its caliber is less than the caliber of elastic component both sides, described elastic component is configured to put on the pressure of described end electrodes with described tissue and deform, and described elastic component is provided with and measures the sensor of described pressure according to its deformation.
Organize the degree that the pressure direct reaction to end electrodes reclines, affect ablation effect, end electrodes of the present invention coordinates at main pipe's head end, it is connected with main pipe by the body in outside, when end electrodes is under pressure, it produces small deformation, drive elastic component deformation, make the sensor on elastic component measure pressure size and (be normally set up the numerical value of a power, about the power of x size, end electrodes is the most suitable with the pressure that reclines of tissue, therapeutic effect is more preferable), compare in background technology by magnetic induction dynamometry, this mode is more direct, will not the distortion by the interference of external magnetic field, it is more accurate to measure, structure is simpler simultaneously, manufacturing cost is lower, it is the most convenient that magnetic induction is compared in operation simultaneously,
nullSimultaneously，In the application structure，End electrodes is coordinated with main pipe by the elastic component of tubulose，Make between end electrodes and main pipe, to have pulled open longer distance，At this apart from interior，It is provided with the elastic component of the tubulose more longer than prior art，The scope of deformation is equivalent to amplify，And the middle part of elastic component arranges path section，Path section stress is concentrated，Described large-scale deformation preferably can be reflected，The power measured by sensor arranged in path section is the most accurate，Its principle is exactly the effect that end electrodes is produced by the pressure from tissue，Reflected by longer elastic component，By " the path section " on elastic component, the deformation of elastic component is intensively showed the most again，Pressure is measured again by the sensor in " path section "，" one amplifies one reduces "，Make ablating device pressure detecting of the present invention more accurate.
As the preferred version of the present invention, described covers disposed on sensor is equipped with the module carrying out temperature detection and temperature-compensating,
The most paid strain gauge on probation of prior art measures pressure, but temperature influence is bigger, extra strain gauge need to be increased to compensate temperature, which increase cost and too increase the technical difficulty of assembling, and the sensor that the application uses could be arranged to comprise and use the mode of strain gauge dynamometry, under this configuration, it is provided with the module carrying out temperature detection and temperature-compensating on a sensor, the temperature impact on sensor can be reduced significantly, making pressure detecting function more accurate, concrete process is:
Before the module carrying out temperature detection and temperature-compensating is added sensor, need to measure the different temperatures impact on the sensor in the present invention, such as, sensor is applied the power of x li of cattle, measure the most at different temperatures, find out the deviation of size and the actual size measuring power at various temperatures, add up, after some groups of data statisticss complete, described module is debugged, make it when sensor is affected by temperature, sensor is carried out temperature-compensating, if the upper limit of temperature-compensating can compensate for the temperature of zero deflection dynamometry, just compensate, if compensate less than, compensate at maximum magnitude point, then according to the data of statistics, the size data of the power obtained by measuring is adjusted, plus a numerical value or deduct a numerical value, make its infinite approach actual numerical value,
So the module carrying out temperature detection and temperature-compensating that the covers disposed on sensor of the application is put, ablating device pressure detecting of the present invention can be made more accurate.
As the preferred version of the present invention, described elastic component is provided with the module carrying out temperature detection and temperature-compensating, its principle and effect identical with the module carrying out temperature detection and temperature-compensating on sensor, as above-mentioned.
Preferred version as the present invention, the elastic groove increasing component elastic force it is provided with in described elastic component path section, make elastic component more sensitive to the feedback from end electrodes pressure, the deformation reflected is bigger, more convenient measurement, if elastic component material is metal, then what elastic groove changed is the elastic strain energy of elastic component.
As the preferred version of the present invention, described end electrodes being provided with fill orifice, it connects with end electrodes inside, for irrigating liquid when melting, helps radiography or other functions.
As the preferred version of the present invention, elastic component path section and away from arranging the changeover portion of trapezoidal shape between the section of big footpath, end side, concentrate to prevent elastomer big footpath section and path section when stress from producing stress and destroy elastic component.
As the preferred version of the present invention, described elastic component material is Nitinol or rustless steel.
As the preferred version of the present invention, described end electrodes has, with the mapping electrodes of deflection section, the function that display main pipe's end is curved.
As the preferred version of the present invention, described support tubes afterbody is provided with spacing elastic component at the parcel plastic cement self moved axially, and stably fixes the position of elastic component, prevents it from moving or come off.
nullPreferred version as the present invention，Described end electrodes possesses mapping function，At least one deflection section is comprised on described main pipe，It is provided with, at described deflection section, the electrode possessing mapping function，Electrode in described end electrodes and deflection section is provided simultaneously with mapping function，So coordinate sensor (it is known that whether the end of body is perpendicular to tissue or becomes how many angles，Also has the direction by patch)，In conjunction with the length of own body between deflection section and end electrodes，Also has the position out of the electrode institute mapping in end electrodes and deflection section，Can be in the hope of the particular location of ablation catheter，More preferable must the carrying out of doctor is helped to melt or other operation processs，(do not know what angle the end of ablation catheter becomes with tissue surface compared to existing technology，The case of bending of whole ablation catheter，The full experience by doctor，Easily tissue is caused damage，Therapeutic effect can not get effectively ensureing simultaneously)，Effect is more preferable.
As the preferred version of the present invention, described elastic component afterbody is provided with the fixing hole for fixed traction steel wire one end, and this structure can be one-body molded with elastic component, make traction steel wire need not find other fixing points again, inwall of such as main pipe etc., simplifies processing technique, reduces cost.
Preferred version as the present invention, described end electrodes tail end is provided with bulge-structure, one end of described elastic component coordinates with this bulge-structure socket joint, and limit the axial-rotation of elastic construction, make the installation of elastic construction with stable, have influence on stability during dynamometry, make dynamometry more accurate, the most more convenient installation simultaneously.
Preferred version as the present invention, described sensor has thermocouple wire in upper connection, loop is cooperatively formed with the sensor conductor arranged on sensor, temperature is measured by the Electromotive Difference Of Potential in loop, it is no longer necessary to individually arrange module realize measuring temperature or compensating temperature, simplify structure, reduce cost.
Compared with prior art, beneficial effects of the present invention:
Pressure detecting is more accurate, manufacturing cost is lower, simple operation.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of ablating device of the present invention contact tissue；
Fig. 2 is the structural representation of ablating device of the present invention；
Fig. 3 is ablating device sectional view of the present invention；
Fig. 4 is ablating device transducer arrangements schematic diagram of the present invention；
Fig. 5 is the structural representation of sensor in the embodiment of the present invention 1；
Fig. 6 is the structural representation of sensor in the embodiment of the present invention 2；
Fig. 7 is the embodiment of the present invention 2 elastic member structural representation；
Fig. 8 is the embodiment of the present invention 1 elastic member structural representation；
Fig. 9 is the assembling schematic diagram in the embodiment of the present invention 1 within ablating device；
Figure 10 is the assembling schematic diagram in the embodiment of the present invention 2 within ablating device；
Figure 11 is the first view of main pipe's upper deflecting section of the present invention；
Figure 12 is the second view of main pipe's upper deflecting section of the present invention；
Figure 13 is the schematic diagram that main pipe's upper deflecting section of the present invention measures position；
Figure 14 is inventive sensor dynamometry schematic diagram；
Figure 15 is end electrodes structural representation of the present invention；
Figure 16 is the structural representation of end electrodes of the present invention assembling support tubes；
Figure 17 is the cross sectional view of ablating device main pipe of the present invention；
Figure 18 is ablating device of the present invention and the miscellaneous part that coordinates with it install after single unit system schematic diagram；
Labelling in figure: 1-end electrodes, 2-ring electrode A, 3-ring electrode B, 4-ring electrode C, 5-main pipe, 6-flexible pipe body, 7-elastic component, 8-intrusion pipe, 9-sensor, 10-temperature sensor, 11-fill orifice, 12-traction steel wire, 13-fixing point, 14-bulge-structure, 15-fit structure, 16-electrode cable, 17-wraps up plastic cement, 18-support tubes, 19-adapter, 20-female Luer, 21-annular electrode D, 22-annular electrode E, 23-hands handle, 71-fixing hole, 72-elastic groove, 91-sensors X, 92-sensor Y, 93-sensor Z, 94-pad A, 95-pad B, 96-sensor conductor, 97-thermocouple wire.
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. 2, 3, 8, 9, 15, 16, 17, a kind of ablating device with pressure detecting, it is used for ablation tissue inserted into the patient (such as Fig. 1, after end electrodes 1 contact tissue, state before meeting relatively produces bending), it main pipe 5 including being pulled bending by traction steel wire 12, the head end of main pipe 5 is provided with the end electrodes 1 for melting, described main pipe 5 is internally provided with the intrusion pipe 8 that connect internal with end electrodes 1, it is provided with fill orifice 11 in described end electrodes 1, it connects with end electrodes 1 inside, intrusion pipe 8 is for fill orifice 11 output liquid for end electrodes 1 surface,
Coordinating with main pipe 5 head end centrally through a support tubes 18 of described end electrodes 1 afterbody, described support tubes 18 coordinates at intrusion pipe 8 outer wall, the outer wall of end electrodes 1 afterbody is connected with described main pipe 5 by a flexible pipe body 6, the described outer elastic component 7 being circumferentially provided with tubulose of support tubes 18, described elastic component 7 includes the path section at middle part, its caliber is less than the caliber of elastic component 7 both sides, described elastic component 7 is configured to put on the pressure of described end electrodes 1 with described tissue and deform, it is provided with on described elastic component 7 and measures the sensor 9 of described pressure according to its deformation.
Flexible pipe body 6 is provided with ring electrode B3 and ring electrode C4 circumferentially spaced aboutly, the provided circumferentially about of main pipe 5 head end has ring electrode A2, ring electrode A2, ring electrode B3, ring electrode C4 with the use of, can melt or tissue around labelling flexible pipe body 6 and main pipe 5 head end, disclosure satisfy that under special circumstances and certain melt demand, flexible pipe body 6 material can be PVC(polrvinyl chloride) or other relatively soft material, elastic component 7 material can be Nitinol or rustless steel, it is also possible to is flexible plastic material；
nullSuch as Fig. 4、5，It is provided with, on described sensor 9, the module carrying out temperature detection and temperature-compensating，Sensor 9 is piezoresistive transducer 9，It is provided with strain gauge，The size according to deformation measurement power is carried out with this，2 pads it are respectively arranged with on sensor 9，For pad A94 and pad B95，It is respectively welded two sensor conductors 96，Loop is formed with this，Realize sensor 9 energy supply and transmission pressure detecting signal，The present embodiment is welded with a thermocouple wire 97 on pad A94 again，Sensor conductor 96 combination on thermocouple wire 97 and pad B95 forms loop，Temperature is measured by measuring electromotive force，Principle is for " when its 2 end of two kinds of different conductors is connected with each other,Form a loop，As long as the temperature at two nodes is different，Loop will produce an electromotive force，The size of this electromotive force is relevant with 2 end temperature，Thus calculate temperature according to corresponding relation "，Sensor 9 energy supply also can be given in the loop formed simultaneously，On-demand realize temperature-compensating.
nullSuch as Fig. 4、14，In the present embodiment，Described sensor 9 is divided into three parts，Including sensors X 91、Sensor Y92、Sensor Z93，It is evenly provided on the circumference of elastic component 7 path section，The record sensors X 9191 when loading certain power and direction、Sensor Y9292、Sensor Z9393，It is to be understood that the corresponding sensor 9 of numerical value and direction of a power，I.e. sensors X 9191、Sensor Y9292、Sensor Z9393，Set up each numerical values recited corresponding numerical value lower with direction test in this manner，Set up data base，It is input in equipment according to the parameter measured by different sensors 9 when actually used after setting up data base，Carrying out tables look-up tries to achieve the most close or equal one group and finds out pressure and the direction of correspondence，And then try to achieve the pressure and direction reclined.
nullDescribed support tubes 18 afterbody is provided with spacing elastic component 7 at the parcel plastic cement 17 self moved axially，It is after elastic component 7 is assembled into support tubes 18，Add，Elastic component 7 is stably installed，Prevent it from sliding axially，The tail end of support tubes 18 is additionally provided with the fit structure 15 for coordinating with main pipe 5 head end，Its external diameter is more than the caliber of support tubes 18，Described end electrodes 1 tail end is provided with bulge-structure 14，One end of described elastic component 7 coordinates with this bulge-structure 14 socket joint，During cooperation, elastic component 7 is outside this bulge-structure 14，The side of this bulge-structure 14 and fit structure 15 is the most axially provided with for various wires、The elongated slot that traction steel wire 12 passes through，Facilitate various wire、Traction steel wire 12 is in the layout within ablating device，As electrode cable 16 grade (is respectively connected with electrode cable 16 on the various electrodes in the present embodiment，Work with this energy supply).
Described elastic component 7 afterbody is provided with the fixing hole 71 for fixed traction steel wire 12 one end, the afterbody of elastic component 7 circumferentially extends out one section of material, fixing hole 71 is the through hole being arranged on this section of material business, this fixing hole 71 i.e. fixing point 13 of traction steel wire 12, traction steel wire 12 one end is fixed here, pass through to pull and then drive main pipe 5 to bend.
nullSuch as Figure 11、12、13，Described end electrodes 1 possesses mapping function，At least one deflection section is comprised (such as Figure 11 when not bending on described main pipe 5，Deflection section is there is after bending，Such as Figure 12)，It is provided with, at described deflection section, the electrode possessing mapping function，Deflecting section in the present embodiment is two，And in deflection section, it is provided with the annular electrode D21 of correspondence、The electrode possessing mapping function that annular electrode E22(is the most described)，When needing to improve the degree of accuracy to the monitoring melting setting position，More deflection sections can be defined according to practical situation，The annular electrode D21 possessing mapping function of correspondence is set in deflection section simultaneously、Annular electrode E22，Such as Figure 11、12，Described end electrodes 1 and annular electrode D21、Annular electrode E22 is provided simultaneously with mapping function，So coordinate sensor 9(it is known that whether the end of main pipe 5 is perpendicular to tissue or becomes how many angles，Also has the direction by patch)，In conjunction with the length of own body between deflection section and end electrodes 1，Also have end electrodes 1 and annular electrode D21、Annular electrode E22 institute mapping position out，Can be in the hope of the particular location of ablating device，More preferable must the carrying out of doctor is helped to melt or other operation processs.
Such as Figure 18, single unit system schematic diagram after installing for the present embodiment ablating device and the miscellaneous part that coordinates with it, the main pipe 5 of the present embodiment ablating device is connected on handle 23, and female Luer 20 connects intrusion pipe 8, for carrying the passage of perfusion liquid, adapter 19 is for being attached with equipment.
Embodiment
2
Such as Fig. 2, 3, 7, 10, 15, 16, 17, a kind of ablating device with pressure detecting, it is used for ablation tissue inserted into the patient (such as Fig. 1, after end electrodes 1 contact tissue, state before meeting relatively produces bending), it main pipe 5 including being pulled bending by traction steel wire 12, the head end of main pipe 5 is provided with the end electrodes 1 for melting, described main pipe 5 is internally provided with the intrusion pipe 8 that connect internal with end electrodes 1, it is provided with fill orifice 11 in described end electrodes 1, it connects with end electrodes 1 inside, intrusion pipe 8 is for fill orifice 11 output liquid for end electrodes 1 surface,
Coordinating with main pipe 5 head end centrally through a support tubes 18 of described end electrodes 1 afterbody, described support tubes 18 coordinates at intrusion pipe 8 outer wall, the outer wall of end electrodes 1 afterbody is connected with described main pipe 5 by a flexible pipe body 6, the described outer elastic component 7 being circumferentially provided with tubulose of support tubes 18, described elastic component 7 includes the path section at middle part, its caliber is less than the caliber of elastic component 7 both sides, described elastic component 7 is configured to put on the pressure of described end electrodes 1 with described tissue and deform, it is provided with on described elastic component 7 and measures the sensor 9 of described pressure according to its deformation.
Such as Fig. 7, described elastic component 7 path section being provided with the elastic groove 72 increasing component elastic force, it is rectangular groove, and setting direction is axially in parallel with elastic component 7, and two twenty percents 120 ° are annularly disposed on path section circumference.
Flexible pipe body 6 is provided with ring electrode B3 and ring electrode C4 circumferentially spaced aboutly, the provided circumferentially about of main pipe 5 head end has ring electrode A2, ring electrode A2, ring electrode B3, ring electrode C4 with the use of, can melt or tissue around labelling flexible pipe body 6 and main pipe 5 head end, disclosure satisfy that under special circumstances and certain melt demand
As Fig. 4,6, it is provided with, on described sensor 9, the module carrying out temperature detection and temperature-compensating, sensor 9 is piezoresistive transducer 9, is provided with strain gauge, carrys out the size according to deformation measurement power with this, 2 pads it are respectively arranged with on sensor 9, for pad A94 and pad B95, it is respectively welded two sensor conductors 96, forms loop with this, realize sensor 9 energy supply and transmission pressure detecting signal
The present embodiment is separately provided with a temperature sensor 10 on sensor 9 side, connect single thermocouple wire 97 on it and form it into the wire in loop, temperature detection and temperature compensation function is carried out individually on sensor 9 side, it arranges position such as Figure 10, in elastic component 7 path section near the side of main pipe 5, it is positioned at sensor 9 other；
nullSuch as Fig. 4、14，In the present embodiment，Described sensor 9 is divided into three parts，Including sensors X 91、Sensor Y92、Sensor Z93，It is evenly provided on the circumference of elastic component 7 path section，The record sensors X 9191 when loading certain power and direction、Sensor Y9292、Sensor Z9393，It is to be understood that the corresponding sensor 9 of numerical value and direction of a power，I.e. sensors X 9191、Sensor Y9292、Sensor Z9393，Set up each numerical values recited corresponding numerical value lower with direction test in this manner，Set up data base，It is input in equipment according to the parameter measured by different sensors 9 when actually used after setting up data base，Carrying out tables look-up tries to achieve the most close or equal one group and finds out pressure and the direction of correspondence，And then try to achieve the pressure and direction reclined.
nullDescribed support tubes 18 afterbody is provided with spacing elastic component 7 at the parcel plastic cement 17 self moved axially，It is after elastic component 7 is assembled into support tubes 18，Add，Elastic component 7 is stably installed，Prevent it from sliding axially，The tail end of support tubes 18 is additionally provided with the fit structure 15 for coordinating with main pipe 5 head end，Its external diameter is more than the caliber of support tubes 18，Described end electrodes 1 tail end is provided with bulge-structure 14，One end of described elastic component 7 coordinates with this bulge-structure 14 socket joint，During cooperation, elastic component 7 is outside this bulge-structure 14，The side of this bulge-structure 14 and fit structure 15 is the most axially provided with for various wires、The elongated slot that traction steel wire 12 passes through，Facilitate various wire、Traction steel wire 12 is in the layout within ablating device，Such as electrode cable 16 etc..
Described elastic component 7 afterbody is provided with the fixing hole 71 for fixed traction steel wire 12 one end, the afterbody of elastic component 7 circumferentially extends out one section of material, fixing hole 71 is the through hole being arranged on this section of material business, this fixing hole 71 i.e. fixing point 13 of traction steel wire 12, traction steel wire 12 one end is fixed here, pass through to pull and then drive main pipe 5 to bend.
nullSuch as Figure 11、12、13，Described end electrodes 1 possesses mapping function，At least one deflection section is comprised (such as Figure 11 when not bending on described main pipe 5，Deflection section is there is after bending，Such as Figure 12)，It is provided with, at described deflection section, the electrode possessing mapping function，Deflecting section in the present embodiment is two，And in deflection section, it is provided with the annular electrode D21 of correspondence、The electrode possessing mapping function that annular electrode E22(is the most described)，When needing to improve the degree of accuracy to the monitoring melting setting position，More deflection sections can be defined according to practical situation，The annular electrode D21 possessing mapping function of correspondence is set in deflection section simultaneously、Annular electrode E22，Such as Figure 11、12，Described end electrodes 1 and annular electrode D21、Annular electrode E22 is provided simultaneously with mapping function，So coordinate sensor 9(it is known that whether the end of main pipe 5 is perpendicular to tissue or becomes how many angles，Also has the direction by patch)，In conjunction with the length of own body between deflection section and end electrodes 1，Also have end electrodes 1 and annular electrode D21、Annular electrode E22 institute mapping position out，Can be in the hope of the particular location of ablating device，More preferable must the carrying out of doctor is helped to melt or other operation processs.
Such as Figure 18, single unit system schematic diagram after installing for the present embodiment ablating device and the miscellaneous part that coordinates with it, the main pipe 5 of the present embodiment ablating device is connected on handle 23, and female Luer 20 connects intrusion pipe 8, for carrying the passage of perfusion liquid, adapter 19 is for being attached with equipment.
Claims (10)
1. an ablating device with pressure detecting, it is used for ablation tissue inserted into the patient, it main pipe including being pulled bending by traction steel wire, the head end of main pipe is provided with the end electrodes for melting, described main pipe is internally provided with the intrusion pipe that connect internal with end electrodes, for for end electrodes surface output liquid, it is characterised in that
The center of described end electrodes afterbody is attached with elastic component, described elastic component is arranged on intrusion pipe outer wall, the outer wall of elastic component is connected with described main pipe by a body, described elastic component includes the path section at middle part, its caliber is less than the caliber of elastic component both sides, described elastic component is configured to put on the pressure of described end electrodes with described tissue and deform, and described elastic component is provided with and measures the sensor of described pressure according to its deformation.
A kind of ablating device with pressure detecting the most according to claim 1, it is characterised in that described covers disposed on sensor is equipped with the module carrying out temperature detection and temperature-compensating.
A kind of ablating device with pressure detecting the most according to claim 1, it is characterised in that be provided with the module carrying out temperature detection and temperature-compensating on described elastic component.
A kind of ablating device with pressure detecting the most according to claim 2, it is characterised in that be provided with the elastic groove increasing component elastic force in described elastic component path section.
A kind of ablating device with pressure detecting the most according to claim 1, it is characterised in that be provided with fill orifice in described end electrodes, it connects with end electrodes inside.
6. according to a kind of ablating device with pressure detecting described in claim 1-5 any one, it is characterized in that, described elastic component path section and away from arranging the changeover portion of trapezoidal shape between the section of big footpath, end side, concentrates to prevent elastomer big footpath section and path section when stress from producing stress and destroys elastic component.
A kind of ablating device with pressure detecting the most according to claim 6, it is characterised in that described end electrodes possesses mapping function, described main pipe comprises at least one deflection section, is provided with at least 2 electrodes possessing mapping function at described deflection section.
A kind of ablating device with pressure detecting the most according to claim 1, it is characterised in that described elastic component material is Nitinol or rustless steel.
A kind of ablating device with pressure detecting the most according to claim 6, it is characterised in that described end electrodes has, with the mapping electrodes of deflection section, the function that display main pipe's end is curved.
A kind of ablating device with pressure detecting the most according to claim 2, it is characterized in that, described sensor has thermocouple wire in upper connection, cooperatively forms loop with the sensor conductor that arranged on sensor, measures temperature by the Electromotive Difference Of Potential in loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388085.XA CN106308921A (en) | 2015-06-30 | 2015-06-30 | Ablation device having pressure detection function |
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| CN201510388085.XA CN106308921A (en) | 2015-06-30 | 2015-06-30 | Ablation device having pressure detection function |
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| CN106768500A (en) * | 2017-01-23 | 2017-05-31 | 湖南埃普特医疗器械有限公司 | A kind of medical catheter device for pressure measurement |
| CN111743620A (en) * | 2020-06-29 | 2020-10-09 | 西北工业大学 | A magnetically anchored ablation electrode system for assisted endoscopy in the treatment of gastrointestinal tumors |
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| CN112294420A (en) * | 2019-08-02 | 2021-02-02 | 深圳北芯生命科技有限公司 | Cryoablation device with sensor array |
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Application publication date: 20170111 |