CN106806016A - A kind of ablating device - Google Patents
A kind of ablating device Download PDFInfo
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- CN106806016A CN106806016A CN201510867136.7A CN201510867136A CN106806016A CN 106806016 A CN106806016 A CN 106806016A CN 201510867136 A CN201510867136 A CN 201510867136A CN 106806016 A CN106806016 A CN 106806016A
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Abstract
The present invention relates to medical radio-frequency ablation techniques field, specifically related to a kind of ablating device, with a working end for stretching into body interior, the working end sets at least two foil gauges, foil gauge described at least two misplaces arrangement on the working end circumferencial direction, the groove along the working end radial direction insertion is provided between the region of at least two neighboring foil gauge correspondence working end, the stress data group measured by realization can accurately determine whether ablation catheter is suitable with the contact of wall of the heart.
Description
Technical field
The present invention relates to medical radio-frequency ablation techniques field, and in particular to a kind of ablating device.
Background technology
Arrhythmia cordis, refers to that the normal rhythm of heart there occurs abnormal change, and is faster than normal cardiac rate (60-100
Beat/min) arrhythmia cordis then be referred to as tachyarrhythmia, clinically with palpitaition, it is nervous, uncomfortable in chest, weak,
Dizzy, dizzy etc. is main performance, severe patient may occur in which pectoralgia, expiratory dyspnea, limb cold sweat go out, the loss of consciousness,
The performance such as tic.Arrhythmia cordis is one of common disease of arrhythmia cordis in the world, the health of the serious harm mankind
With influence quality of life, current catheter ablation oneself turn into one of its treatment means.
Catheter ablation also known as catheter ablation, the operation be under the monitoring of X-ray angiography machine,
By electrode catheter through vein or the arteries feeding chambers of the heart, first check that determination causes tachycardic anomaly sxtructure
Position, then local release high frequency electric in this place, produces temperature very high in the range of very little, passes through
Thermal efficiency, makes moisture evaporation in local organization, dries necrosis, reaches blocking tachy-arrhythmia Accessory pathway
And originating point, it is finally reached therapeutic purposes.
Radio-frequency ablation procedure has become radical cure paroxysmal tachycardia most efficient method at present, is demonstrate,proved by clinic
It is real melted only in the case of the electrode of distal end of catheter and the contact of cardiac muscular tissue are suitable can be only achieved compared with
Good therapeutic effect.When ablation catheter is treated, it is in inserting the catheter into heart, and makes distal end of catheter and heart
Inwall is contacted, and in the process it is generally important that making distal end of catheter carry out good contact with wall of the heart, is contacted
, even there is heart wall and wears when serious in the excessive worthless irreversible damage easily caused to heart tissue of pressure
Hole, and the too small therapeutic purposes for being then unable to reach thorough ablation of contact, ablation effect are bad.
Existing technology mostly measures the contact of distal end of catheter and tissue using electromagnetism or optical technology, its
Equipment requirement is higher and complexity, and manufacturing cost is also of a relatively high.There is technology to add in the catheter at present and use magnetic strength
The sensor answered carrys out the contact force of sensing tube distal end and organ, and this sensor is in the application easily by extraneous magnetic
Interference and distortion, the accuracy of measurement needed in catheter distal tip by external interference, and the technology easily
Little space in multiple Magnetic Sensors are installed, technology difficulty is big, is more expensive to manufacture.
In sum, it is difficult to accurately measure the contact of ablation catheter and wall of the heart at present, it is difficult to it is determined that disappearing
Melt conduit whether suitable with the contact of wall of the heart, it is difficult to control ablation effect.
Therefore, a kind of technology that can accurately measure ablation catheter and the contact of wall of the heart is needed badly.
The content of the invention
It is an object of the invention to：For being difficult to accurately measure contact pressure of the ablation catheter with wall of the heart at present
A kind of problem of power, there is provided ablating device that can accurately measure ablation catheter and the contact of wall of the heart.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of ablating device, with a working end for stretching into body interior, it is characterised in that：The working end sets
At least two foil gauges are put, foil gauge described at least two misplaces arrangement on the working end circumferencial direction, extremely
It is provided with along the working end radial direction insertion between the region of few two neighboring foil gauge correspondence working end
Groove.
In this programme, in working end at least provided with two foil gauges misplaced along its circumferencial direction, in this way, energy
Enough stress values measured according to all foil gauges determine the stress at ablation catheter patch foil gauge, by all strains
The stress value that piece is measured is used as one group of stress data group, in this way, ablation catheter stress is different, ablation catheter bending
Radian is different, and stress data group is also just different, that is to say, that stress data group and conduit stress value are one a pair
Should be related to, be provided with along the working end radially between the region of at least two neighboring foil gauge correspondence working end
The groove of direction insertion, so, it is possible to make ablation catheter deflection under identical stressing conditions bigger, Neng Gourang
The sensitiveer reliability of strain built-in testing on elastic component is arranged on, so, it is possible that ablation is determined more accurately
Whether conduit is suitable with the contact of wall of the heart.
When this programme is implemented, stress of the ablation catheter in various pressure and various bending directions is obtained first
Data group, every group of stress data includes that the stress value of all foil gauges is constituted, and containing positive and negative, will obtain data
Database purchase is organized into by corresponding relation in a device, in measurement ablation catheter stress, bending direction and bending
Searched in database according to stress data group during radian, according to uniqueness, one group of stress data group can only be in number
According to being found in storehouse, a corresponding power, bending direction and crooked radian are matching, in this way, can be realized as disappearing
Melt the accurate of catheter pressure, bending direction and crooked radian to measure, can determine ablation catheter and wall of the heart
Contact it is whether suitable, can more easily control ablation effect.
Preferably, the working end sets elastic member, foil gauge described at least two is arranged on the bullet
Property component on, be at least provided with along the working end footpath between the region of two neighboring foil gauge correspondence working end
To the groove of direction insertion, the elastic component raw material are stainless steel or Nitinol, so, it is possible to allow and disappear
Melt conduit bend by pressure and can quickly be back to nature after stress removal, meanwhile, it is capable to allow ablation to lead
Pipe deflection under identical stressing conditions is bigger, can allow the strain built-in testing being arranged on elastic component more
Whether sensitive reliability, it is suitable with the contact of wall of the heart to so, it is possible ablation catheter is determined more accurately.
Elastic component is made of stainless steel, mainly considers its low raw-material cost, and the elastic structure after being made
Part has favorable elasticity, disclosure satisfy that the primary demand of stress test；Further, elastic component uses NiTi
Alloy is made, and Nitinol is a kind of marmem, can be by the plastic deformation of itself in a certain specified temp
Under be automatically restored to the special alloy of original-shape, the expansion and contraction of Nitinol high, fatigue life up to high,
Damping characteristic is higher by many times than common spring, and its corrosion resistance is better than many medical stainless steels, with good
Elasticity, so, it is possible to further enhance the elasticity of elastic component, increase the sensitivity of foil gauge dynamometry, allow power
Measurement with bending direction is more accurate.
Preferably, on the conduit circumferencial direction, two maximum adjacent foil gauges of spacing distance it is symmetrical
Interval angles 270 ° >=a >=90 ° of the center on the conduit circumferencial direction, in the two foil gauges correspondence
Elastic component region between be provided with the groove, it is particularly, described logical in the conduit circumferencial direction
The size of groove is equal to the spacing distance of the two foil gauges, the interval angles of the foil gauge described in this patent：
The working end of whole conduit is set to be in line, in the projection perpendicular to the plane of conduit working end axis, should
Become center of circle angle of the piece symmetrical centre with the subpoint of conduit working end axis as the center of circle, also, two foil gauges
It is provided with without any foil gauge.
Using such scheme, the elasticity of elastic component can be further enhanced, increase the sensitivity of foil gauge dynamometry,
Make power more accurate with the measurement of bending direction.
Preferably, three foil gauges are provided with the elastic component, and on the conduit circumferencial direction, two
Interval angles b=45 ° of the symmetrical centre of the individual adjacent foil gauge on the conduit circumferencial direction or
B=60 ° or b=90 °, another described foil gauge is with two foil gauges in the conduit circumference side
Upward interval angles are equal, and the groove, particularly, two are provided between at least two adjacent foil gauges
The groove is provided between individual adjacent foil gauge, that is to say, that three grooves are provided with, in this way, energy
Enough further enhance the elasticity of elastic component, increase the sensitivity of foil gauge dynamometry, allow the survey of power and bending direction
Amount is more accurate.
Preferably, three foil gauges are provided with the elastic component, and on the conduit circumferencial direction, two
Interval angles b=45 ° of the symmetrical centre of the individual adjacent foil gauge on the conduit circumferencial direction or
B=60 ° or b=90 °, in another described foil gauge and two foil gauges one in the conduit
Interval angles on circumferencial direction are equal to b, are provided with the groove between at least two adjacent foil gauges, especially
, it is provided with the groove between two adjacent foil gauges, that is to say, that be provided with three grooves, such as
This, can further enhance the elasticity of elastic component, increase the sensitivity of foil gauge dynamometry, allow power and bending side
To measurement it is more accurate.
Preferably, three foil gauges are provided with the elastic component, and on the conduit circumferencial direction, three
Interval angles b=120 ° of the symmetrical centre of the individual foil gauge on the conduit circumferencial direction, at least two
The groove is provided between adjacent foil gauge, particularly, the groove is provided between two adjacent foil gauges,
That is, being provided with three grooves, so, it is possible to further enhance the elasticity of elastic component, increase
The sensitivity of foil gauge dynamometry, makes power more accurate with the measurement of bending direction.
Preferably, four foil gauges are provided with the elastic component, in the conduit circumferencial direction, four
Interval angles b=90 ° of the symmetrical centre of the foil gauge on the conduit circumferencial direction, at least two phases
The groove is provided between adjacent foil gauge, particularly, the groove is provided between two adjacent foil gauges,
That is, being provided with four grooves, so, it is possible to further enhance the elasticity of elastic component, increase
The sensitivity of foil gauge dynamometry, makes power more accurate with the measurement of bending direction.
Preferably, at least two foil gauges are arranged in the working end axis direction mistake, so, it is possible into
One step strengthens the elasticity of elastic component, increases the sensitivity of foil gauge dynamometry, allow power and bending direction measurement more
Plus it is accurate.
Preferably, the foil gauge is each equipped with secondary foil gauge, the secondary foil gauge is used to eliminate the strain
The temperature error of piece.The temperature error of foil gauge is primarily due to temperature and can produce additional strain to working strain gauge,
Make the presence of error between test and actual value, accordingly, it would be desirable to increase secondary foil gauge, be arranged on for test force
Near foil gauge, secondary foil gauge is set only to test due to the deformation that temperature change causes, in this way, being surveyed using foil gauge
The deformation for taking subtracts the deformation that secondary foil gauge is measured, and can obtain foil gauge and exclude being relatively defined after temperature influences
True numerical value, and position, closer to foil gauge, strain built-in testing effects are better.
Preferably, being provided with Magnetic Sensor on the elastic component, the Magnetic Sensor is arranged in magnetic field,
So, it is possible accurately to determine particular location of the conduit in heart, can accurately determine the location of ablation catheter
Whether it is set ablation locations, so, it is possible to further enhance carries out ablation hand using the application ablating device
The ablation effect of art.
Preferably, after the ablating device coordinates with sheath, the bending section of the ablating device is that conduit is curved
Tune, end face to the guiding-tube bend section of the working end of the ablating device is conduit free segment, the ablation
The other parts of the working end of device are the nearly means of conduit, the free segment, the bending section and the nearly means
At least one ring electrode is respectively provided with, the ring electrode is set in the electric field.
This programme is so designed that, guiding-tube bend section that it can in real time determine ablation catheter, conduit free segment and
Particular location of the nearly means of conduit in heart, that is to say, that ablation catheter can be shown on screen in real time
Curved shape, in this way, just can determine ablation catheter conduit free segment whether be with the atrial septum face of fossa ovalis
It is no vertical, that is to say, that puncture needle can puncture atrial septum face with the direction vertical with atrial septum face, in this way,
When puncturing need not using traditional X-ray development determine ablation catheter conduit free segment whether with room
Septal surface is vertical, and X-ray can be reduced while puncture success rate is improved to patient and the spoke of medical personnel
Shoot evil wounded.
In sum, by adopting the above-described technical solution, the beneficial effect of the application is：
1st, the contact force of ablation catheter and tissue can accurately be determined, therefore, it is possible to accurately judge contact force
If appropriate for ablation；
2nd, the bending direction and crooked radian of ablation catheter can accurately be determined；
The beneficial effect of the application other embodiment is：Further enhancing the application ablating device test pressure
The accuracy of power, bending direction and crooked radian, further, it is possible to strengthen the function of the application ablating device.
Brief description of the drawings
Fig. 1 is the structural representation of the application；
Fig. 2 is the structural representation of the application elastic component；
Fig. 3 is the structural representation after foil gauge coordinates with elastic component；
Fig. 4 is the profile after foil gauge coordinates with elastic component；
Fig. 5 is the profile after foil gauge coordinates with elastic component；
Fig. 6 is the profile after foil gauge coordinates with elastic component；
Fig. 7 is the profile after foil gauge coordinates with elastic component；
Marked in figure：1- elastic components, 11- grooves, 2- foil gauges, 21- pair foil gauges, 4- flexible pipe bodies,
5- Magnetic Sensors, 6- ring electrodes, 61- tip electrodes, 7- fill orifices, 8- intrusion pipes, 9- temperature sensors.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to
The present invention is explained, is not intended to limit the present invention.
As shown in figure 1, a kind of ablating device, with a working end for stretching into body interior, the working end end
Portion sets tip electrodes 61, and tip electrodes 61 for cylindric, for obtuse design by one end, the other end and elasticity structure
Part 1 is fixedly connected, and elastic component 1 is elastic tube, and the elastic component 1 is wrapped with flexible pipe body 4, energy
It is enough to isolate foil gauge with tissue, the security and operating performance of the application ablating device can be strengthened,
Flexible pipe body 4 can be bellows, and its external diameter is identical with the external diameter of tip electrodes 61, and elastic component 1 is set
In the inner chamber of flexible pipe body 4, in the inner chamber of elastic component 1 place intrusion pipe 8, be used to by eliminating medicine liquid with lead
Line, foil gauge 2 etc. separate, while eliminating medicine liquid can be guided in fill orifice 7, tip electrodes 61 setting
There is temperature sensor 9, be used to detect what the tissue temperature near ablation catheter end was melted with Real-time Feedback
Situation.
Also, after when in use, the application ablating device coordinates with sheath, the bending section of the application ablating device
Be divided into guiding-tube bend section, the end face of the working end of the application ablating device to guiding-tube bend section for conduit from
By section, the other parts of the working end of the application ablating device are the nearly means of conduit, the free segment, described curved
Tune and the nearly means are respectively provided with least one ring electrode 6, and the ring electrode 6 is set in the electric field.
Additionally, being provided with Magnetic Sensor 5 on elastic component 1, the Magnetic Sensor 5 is arranged in magnetic field, such as
This, can accurately determine particular location of the conduit in heart, can accurately determine that the location of ablation catheter is
No is set ablation locations, and so, it is possible to further enhance carries out ablative surgery using the application ablating device
Ablation effect.
Such as (1) in Fig. 2 and Fig. 3 and Fig. 4, Fig. 2 and Fig. 3 from two different elastic structures of angle observation
Part 1, (1) in Fig. 4 is sectional view of the elastic component 1 perpendicular to its axis, and the inside of elastic component 1 is
The cylindrical hole of insertion, profile is hexahedron, and by fillet, three sides of elastic component 1 set incline respectively
It is equipped with a foil gauge 2, three foil gauges 2 misplace arrangement on the working end circumferencial direction, here
Working end circumferencial direction be also elastic component 1 circumferencial direction, the corresponding elastic component of adjacent foil gauge 2
The groove 11 along the radial direction insertion of elastic component 1 is provided between 1 region, (1) in such as Fig. 4,
Three grooves 11 are had, the elastic component 1 of groove 11 is provided with as shown in Figures 2 and 3, in elastic component
Groove 11 is set on 1, by increasing capacitance it is possible to increase the elasticity of elastic component 1, is increased and groove 11 is set on elastic component 1
The deformation quantity in neighbouring region, it is possible to increase the deflection of foil gauge 2, so, it is possible to make test more accurate
Really, also, the raw material of elastic component 1 can be Nitinol or stainless steel, elasticity can be further enhanced
The elasticity of component 1, further improves the accuracy of test.
As shown in figure 3, foil gauge 2 is each equipped with secondary foil gauge 21, secondary foil gauge 21 is used to eliminate foil gauge
2 temperature error.The temperature error of foil gauge 2 is primarily due to temperature and additional answering can be produced to working strain gauge
Become, make the presence of error between test and actual value, accordingly, it would be desirable to increase secondary foil gauge 21, be arranged on for
Near the foil gauge 2 of test force, secondary foil gauge 21 is set only to test due to the deformation that temperature change causes, in this way,
The deformation measured using foil gauge 2 subtracts the deformation that secondary foil gauge is measured, and can obtain foil gauge 2 and exclude temperature
Accurate numerical value after degree influence, and position is closer to foil gauge 2, the test effects of foil gauge 2
Better.
As shown in figure 4, be elastic component 1 along the sectional view perpendicular to its axis, in figure (1), in conduit
On circumferencial direction, that is, on the circumferencial direction of elastic component 1, foil gauge 2a and foil gauge 2b is spaced
B=90 ° of angle, foil gauge 2c and b=90 ° of foil gauge 2b interval angles, foil gauge 2c and foil gauge 2a
A=180 ° of interval angles, groove 11 is provided between the corresponding region of elastic component 1 of foil gauge 2, is led to
The width of groove 11 is equal to the spacing distance of adjacent foil gauge, is so designed that, can meet three foil gauges of patch
Increase the elasticity of elastic component 1 on the basis of 2 in the way of slotting to greatest extent, also, in elastic component
Three foil gauges 2 are set on 1, compared with two foil gauges 2 are set, a foil gauge 2 is increased, are increased
One test point, can further improve the accuracy of test.
As shown in (2) figure in Fig. 4, b=90 ° of foil gauge 2a and foil gauge 2b interval angles, foil gauge 2c
With b=90 ° of foil gauge 2b interval angles, foil gauge 2c and foil gauge 2a, foil gauge 2c and foil gauge 2b
Equal a=135 ° of interval angles, groove 11 is provided between the corresponding region of elastic component 1 of foil gauge 2,
The width of groove 11 is equal to the spacing distance of adjacent foil gauge 2, is so designed that, can be answered patch three is met
Increase the elasticity of elastic component 1 on the basis of change piece 2 in the way of slotting to greatest extent.
In Fig. 4 (1), the profile of elastic component 1 is hexahedron, with four sides, Fig. 4 (2) bullet
Property member profile be the octahedral bodily form, with six sides, using hexahedron or octahedron as elastic component 1
Profile, can easily be fitted in foil gauge 2 on elastic component 1 by it, also, make test more accurate；When
So, the profile of elastic component 1 can also be cylinder, the quantity of foil gauge 2, relative position and groove 11
Position is identical with Fig. 4 (1) or Fig. 4 (2), i.e., be only the different profile of elastic component 1, using cylinder
Elastic component 1, convenient processing, low cost of manufacture.
As shown in figure 5, b=45 ° of foil gauge 2a and foil gauge 2b interval angles, in figure, foil gauge 2a
With a=270 ° of foil gauge 2c interval angles, rather than a=90 ° of interval angles, described in text of the statement between
Refer both to the interval angles of adjacent foil gauge 2 every angle, i.e., the middle angle separated without other foil gauges 2,
Therefore, in (1) is schemed, a=270 ° of foil gauge 2a and foil gauge 2c interval angles；In (2) are schemed,
Foil gauge 2c and foil gauge 2a, foil gauge 2c and equal a=157.5 ° of foil gauge 2b interval angles.
As shown in Fig. 5 (1) or Fig. 5 (2), set between the corresponding region of elastic component 1 of foil gauge 2
There is groove 11, the width of groove 11 is equal to the spacing distance of adjacent foil gauge 2, is so designed that, can be full
Increase the elasticity of elastic component 1 on the basis of foot three foil gauges 2 of patch in the way of slotting to greatest extent,
Also, the profile of elastic component 1 is cylinder, can conveniently process, low cost of manufacture；The profile of elastic component 1
It is polyhedron, foil gauge 2 is arranged on polyhedral side, foil gauge 2 can easily be fitted in elasticity
On component 1, make test more accurate.
As shown in fig. 6, b=60 ° of foil gauge 2a and foil gauge 2b interval angles, in figure, foil gauge 2a
With a=240 ° of foil gauge 2c interval angles；In (2) are schemed, foil gauge 2c and foil gauge 2a, foil gauge
2c and equal a=150 ° of foil gauge 2b interval angles.
As shown in Fig. 6 (1) or Fig. 5 (2), set between the corresponding region of elastic component 1 of foil gauge 2
There is groove 11, the width of groove 11 is equal to the spacing distance of adjacent foil gauge 2, is so designed that, can be full
Increase the elasticity of elastic component 1 on the basis of foot three foil gauges 2 of patch in the way of slotting to greatest extent,
Also, the profile of elastic component 1 is cylinder, can conveniently process, low cost of manufacture；The profile of elastic component 1
It is polyhedron, foil gauge is arranged on polyhedral side, foil gauge can easily be fitted in elastic component 1
On, make test more accurate.
As Fig. 7 (1) or Fig. 7 (2) shown in, foil gauge 2a and foil gauge 2b, foil gauge 2a and
Foil gauge 2c interval angles are equal, in (1) of Fig. 7, foil gauge 2a and foil gauge 2b, foil gauge 2a
With b=120 ° of foil gauge 2c interval angles, in (1) of Fig. 7, foil gauge 2a and foil gauge 2b, strain
B=90 ° of piece 2a and foil gauge 2c interval angles.
As shown in Fig. 6 (1) or Fig. 5 (2), it is provided between the corresponding elastic component region of foil gauge 2
Groove 11, the width of groove 11 is equal to the spacing distance of adjacent foil gauge, is so designed that, can be pasted meeting
Increase the elasticity of elastic component 1 on the basis of three foil gauges in the way of slotting to greatest extent, also,
The profile of elastic component 1 is polyhedron, and foil gauge 2 is arranged on polyhedral side, will can easily strain
Piece 2 is fitted on elastic component 1, makes test more accurate；Additionally, the profile of elastic component 1 can be circle
Cylindricality, can conveniently process, low cost of manufacture.
Particularly, in the axis direction of elastic component 1, the size of groove 11 is equal to the size of foil gauge 2, more
Particularly, the center of the center of groove 11 and foil gauge 2 is on the same section of elastic component 1, the section
Perpendicular to the axis of elastic component 1, in this way, the region of the laminating of foil gauge 2 is deflection on elastic component 1
Larger region, can further improve the accuracy of test.
Particularly, in the axis direction of elastic component 1, with multiple grooves 11, elastic structure can further be increased
The elasticity of part 1, further improves the accuracy of test.
When this programme is implemented, stress of the ablation catheter in various pressure and various bending directions is obtained first
Data group, every group of stress data includes that the stress value of all foil gauges 2 is constituted, and containing positive and negative, will obtain data
Be organized into database purchase in a device by corresponding relation, in measurement ablation catheter stress, bending direction and curved
Searched in database according to stress data group during bent radian, according to uniqueness, one group of stress data group can only be
A corresponding power, bending direction and crooked radian are found in database matching, in this way, can be realized as
The accurate of ablation catheter pressure, bending direction and crooked radian measures, and can determine in ablation catheter and heart
Whether the contact of wall is suitable, can more easily control ablation effect.
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should wrap
It is contained within protection scope of the present invention.
Claims (14)
1. a kind of ablating device, with a working end for stretching into body interior, it is characterised in that：The working end
At least two foil gauges are set, and foil gauge described at least two misplaces arrangement on the working end circumferencial direction,
It is provided with along the working end radial direction insertion between the region of at least two neighboring foil gauge correspondence working end
Groove.
2. ablating device according to claim 1, it is characterised in that：The working end sets flexible
Component, foil gauge described at least two is arranged on the elastic component, at least two neighboring foil gauge correspondence work
The groove along the working end radial direction insertion is provided between the region for making end.
3. ablating device according to claim 2, it is characterised in that：On the conduit circumferencial direction,
Between two maximum symmetrical centres of the adjacent foil gauge of spacing distance are on the conduit circumferencial direction
Every 270 ° >=a >=90 ° of angle, set between the region of the corresponding elastic component of the two foil gauges
State groove.
4. ablating device according to claim 3, it is characterised in that：It is provided with the elastic component
Three foil gauges, on the conduit circumferencial direction, two symmetrical centres of the adjacent foil gauge are described
B=45 ° or b=60 ° or b=90 ° of interval angles on conduit circumferencial direction, another described foil gauge with this two
The interval angles of the individual foil gauge are equal, and the groove is provided between at least two adjacent foil gauges.
5. ablating device according to claim 3, it is characterised in that：It is provided with the elastic component
Three foil gauges, on the conduit circumferencial direction, two symmetrical centres of the adjacent foil gauge are described
B=45 ° or b=60 ° or b=90 ° of interval angles on conduit circumferencial direction, another described foil gauge with this two
The interval angles of one are equal to b in the individual foil gauge, are provided between at least two adjacent foil gauges described
Groove.
6. ablating device according to claim 3, it is characterised in that：It is provided with the elastic component
Three foil gauges, on the conduit circumferencial direction, three symmetrical centres of the foil gauge are justified in the conduit
B=120 ° of interval angles in circumferential direction, the groove is provided between at least two adjacent foil gauges.
7. ablating device according to claim 3, it is characterised in that：It is provided with the elastic component
Four foil gauges, on the conduit circumferencial direction, four symmetrical centres of the foil gauge are justified in the conduit
B=90 ° of interval angles in circumferential direction, the groove is provided between at least two adjacent foil gauges.
8. the ablating device according to claim 1~7 any one, it is characterised in that：At least two should
Become piece to be arranged in the working end axis direction mistake.
9. the ablating device according to claim 1~7 any one, it is characterised in that：The elastic structure
Part is wrapped with flexible pipe body.
10. the ablating device according to claim 1~7 any one, it is characterised in that：The strain
Piece is each equipped with secondary foil gauge, and the secondary foil gauge is used to eliminate the temperature error of the foil gauge.
11. ablating devices according to claim 8, it is characterised in that：The foil gauge is each equipped with pair
Foil gauge, the secondary foil gauge is used to eliminate the temperature error of the foil gauge.
12. ablating devices according to claim 9, it is characterised in that：The foil gauge is each equipped with pair
Foil gauge, the secondary foil gauge is used to eliminate the temperature error of the foil gauge.
13. ablating devices according to claim 12, it is characterised in that：Set on the elastic component
There is Magnetic Sensor, the Magnetic Sensor is arranged in magnetic field.
14. ablating devices according to claim 13, it is characterised in that：The ablating device and sheath
After cooperation, the bending section of the ablating device is guiding-tube bend section, the end face of the working end of the ablating device
It is conduit free segment to guiding-tube bend section, the other parts of the working end of the ablating device are that conduit is near
Means, the free segment, the bending section and the nearly means are respectively provided with least one ring electrode, the ring electricity
Pole is set in the electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867136.7A CN106806016A (en) | 2015-12-01 | 2015-12-01 | A kind of ablating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867136.7A CN106806016A (en) | 2015-12-01 | 2015-12-01 | A kind of ablating device |
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| CN106806016A true CN106806016A (en) | 2017-06-09 |
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| CN201510867136.7A Pending CN106806016A (en) | 2015-12-01 | 2015-12-01 | A kind of ablating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111345901A (en) * | 2018-12-20 | 2020-06-30 | 四川锦江电子科技有限公司 | Method for measuring stress of radio frequency ablation pressure catheter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20170609 |