CN106859762A - Electrophysiologicalcatheter catheter - Google Patents
Electrophysiologicalcatheter catheter Download PDFInfo
- Publication number
- CN106859762A CN106859762A CN201510927223.7A CN201510927223A CN106859762A CN 106859762 A CN106859762 A CN 106859762A CN 201510927223 A CN201510927223 A CN 201510927223A CN 106859762 A CN106859762 A CN 106859762A
- Authority
- CN
- China
- Prior art keywords
- foil gauge
- wire
- catheter
- support tube
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention provides a kind of electrophysiologicalcatheter catheter, by in distal end of catheter, support tube, at least one strain part and temperature compensation component are set, the strain part is used to obtain the first dependent variable of distal end of catheter contact force and generation under environment temperature collective effect, the temperature compensation component is used to compensate the dependent variable produced by the environment temperature in first dependent variable, so as to obtain only by the lower actual strain amount for producing of distal end of catheter contact force effect.In the present invention, there is provided temperature compensation component, temperature-compensating is carried out with to the strain size that strain part is measured, the strain size of the actual generation of contact force is obtained, the change of distal contact power can be accurately judged that, improve measurement precision.
Description
Technical field
The present invention relates to catheter technical field, more particularly to a kind of electrophysiologicalcatheter catheter.
Background technology
In recent years, to such as arrhythmia cordis, intractable hypertension etc. can carry out PCI using conduit system.
Such as in the treatment of atrial fibrillation in arrhythmia cordis, ablation or mapping catheter enter intracardiac through vein or artery, to the heart
Mapping is inside carried out, the electric signal position for noting abnormalities or path impose energy and melted to terminate afterwards
Or change useless electric signal, reach the effect for the treatment of.Intractable hypertension and for example is carried out to arteria renalis ablation
Treatment, from the connection artery that artery enters abdominal aorta and kidney, ablation blocking is secondary to hand over electrophysiologicalcatheter catheter
Sense nerve pathway, plays a part of step-down.
In ablation procedure, the electrode of distal end of catheter is particularly significant with the contact force of vascular wall or tissue.When connecing
When touch is smaller, ablation stove is shallow, it is impossible to effectively completely cuts off abnormal electric signal or nerve conduction, and works as contact force
When larger, the risk of security is increased again.
Regarding to the issue above, occur in that in distal end of catheter placement force sensor to effectively obtain electrode and blood
The contact force numerical value of tube wall or tissue.Such as, add using the position sensor of magnetic induction to feel in the catheter
The contact force of distal end of catheter and organ is surveyed, but this sensor has certain limitation in the application, such as relatively holds
Be vulnerable to the interference of external magnetic field and make result distortion, in addition, the use based on magnetic field, limit conduit its
The realization of his function, such as Three-Dimensional Magnetic alignment system.Also there is the base for employing pressure sensitive as force snesor
Body experiences the load of distal end of catheter, but this system can only exactly measure axial load, and to non-axle
To load lack accuracy.Also the sensing conduit of the power based on optical fiber sensing system measures conduit and blood
The contact force of tube wall or organ surface, but its encapsulation difficulty is high, and preparation technology is complicated, expensive, and needs
Want external electric signal equipment.
It is follow-up to occur in that one kind based on foil gauge again for the problem that distal end of catheter placement force sensor is present
Technology realizes the electrophysiologicalcatheter catheter of pressure sensing function, and foil gauge is mainly by the metal of embedded plastic basis material
Used as sensing element, strain to external world is sensed grid silk.When foil gauge is subject to deformation, metal gate silk
Elongation attenuates or compresses thicker, so as to cause the change of grid silk resistance.Faint resistance variations pass through bridge-type again
Circuit is amplified, so as to recognize the size of strain.The electrophysiologicalcatheter catheter has does not receive electromagnetic radiation environment
Influence, low cost, the advantage such as susceptibility is high.
Fig. 1 and Fig. 2 is specifically refer to, the electrophysiologicalcatheter catheter of pressure sensing function is realized based on strain-ga(u)ge technique
Main three foil gauges 121 ' and support tube 120 ', three foil gauges for including being arranged at electrophysiologicalcatheter catheter distal end
121 ' are uniformly arranged on support tube 120 ', and the support tube 120 ' is the elastic tube that can produce deformation under stress,
Therefore, foil gauge 121 ' can sensitively provide the change of electrophysiologicalcatheter catheter distal contact power, but actually used
During foil gauge can be affected by temperature larger, be shown below：
εCombined=εtem+εstrain；
εCombinedIt is the strain size of measurement, εtemIt is that strain, ε are produced by adaptability to changesstrainIt is to be produced by temperature
Strain, the strain size of measurement is equal to adaptability to changes and produces the strain sum that strain and temperature are produced.Fig. 2 is to adopt
The result figure that measurement result is varied with temperature is exported with the pressure sensor of Fig. 1, as shown in Fig. 2 actual should
Fluctuated at different temperatures with the baseline (situation about not stressing) of middle foil gauge very big, it is sufficient to cover and produced by adaptability to changes
(signal in D regions in such as Fig. 2, understands and compares raw signal for convenience, especially shows this
Region representation stress and temperature-resistant situation, in actual measurement process, such as constant temperature change then should
Region cannot show), cause the accuracy of measurement to decline, it is therefore desirable to carry out temperature-compensating to foil gauge.
Therefore, design the electrophysiologicalcatheter catheter with temperature-compensating and be extremely necessary improving the precision of measurement.
The content of the invention
It is an object of the invention to provide a kind of electrophysiologicalcatheter catheter, to solve in the prior art using based on strain
Piece measurement distal end of catheter contact force when, foil gauge it is affected by temperature and cause measurement accuracy decline
Problem.
In order to solve the above technical problems, the present invention provides a kind of electrophysiologicalcatheter catheter, it is described with distal end of catheter
Electrophysiologicalcatheter catheter is included in ablating electrode, support tube, at least one strain part that the distal end of catheter is set
And temperature compensation component；The support tube is connected with the ablating electrode, it is described strain part with it is described
Temperature compensation component is all arranged at the support tube, and the support tube has elastic deformation section；The Response Division
Part is arranged at the elastic deformation section, for the contact force in the distal end of catheter and environment temperature collective effect
It is lower generation the first dependent variable, the temperature compensation component be used in first dependent variable by the environment temperature
Spend the dependent variable for producing to compensate, so as to obtain only by the lower actual strain amount for producing of contact force effect.
Optionally, in described electrophysiologicalcatheter catheter, the strain part is the first foil gauge；The temperature
Compensating unit is temperature sensor, for sensing the environment temperature, and and then by first foil gauge
Temperature compensation curve, there is provided first foil gauge produced under the effect of environmental temperature described second
Dependent variable, second dependent variable is used for the strain to being produced by the environment temperature in first dependent variable
Amount is compensated.
Optionally, in described electrophysiologicalcatheter catheter, the strain part is the first foil gauge；The temperature
Compensating unit is the second foil gauge, for producing the second dependent variable under the effect of environmental temperature, described the
Two dependent variables are used to compensate the dependent variable produced by the environment temperature in first dependent variable, institute
State the first foil gauge has identical temperature-coefficient of electrical resistance, linear expansion coefficient, strain with second foil gauge
Sensitivity coefficient and initial resistivity value.
Optionally, in described electrophysiologicalcatheter catheter, the support tube also includes inelastic deformation section, described
First foil gauge is arranged at the elastic deformation section of the support tube, and second foil gauge is arranged at described
The inelastic deformation section of support tube.
Optionally, in described electrophysiologicalcatheter catheter, first foil gauge includes comb wire, high score
Sub-pieces material and wire, the comb wire are fixed in the macromolecular sheet material and in the comb wire
Each wire it is parallel with the axial direction of the support tube, the wire is connected simultaneously with the comb wire
Stretched out from the macromolecular sheet material, for the electronic unit being connected in electrophysiologicalcatheter catheter handle.
Optionally, in described electrophysiologicalcatheter catheter, second foil gauge includes comb wire, high score
Sub-pieces material and wire, the comb wire are fixed in the macromolecular sheet material and in the comb wire
Each wire it is parallel with the axial direction of the support tube, the wire is connected simultaneously with the comb wire
Stretched out from the macromolecular sheet material, for the electronic unit being connected in electrophysiologicalcatheter catheter handle.
Optionally, in described electrophysiologicalcatheter catheter, second foil gauge includes comb wire, high score
Sub-pieces material and wire, the comb wire are fixed in the macromolecular sheet material and in the comb wire
Each wire it is perpendicular with the axial direction of the support tube, the wire is connected simultaneously with the comb wire
Stretched out from the macromolecular sheet material, for the electronic unit being connected in electrophysiologicalcatheter catheter handle.
Optionally, in described electrophysiologicalcatheter catheter, first foil gauge is one with second foil gauge
Body formula is split type.
Optionally, in described electrophysiologicalcatheter catheter, first foil gauge is all with second foil gauge
Multiple, evenly along being circumferentially arranged for the electrophysiologicalcatheter catheter, each second foil gauge is led along electro physiology
The front end or rear end that are axially set in first foil gauge of pipe.
Optionally, in described electrophysiologicalcatheter catheter, the elastic deformation section of the support tube makes institute with some
State the breach that deformation section is deformed upon.
Optionally, in described electrophysiologicalcatheter catheter, the elastic deformation section of the support tube lacks with spirality
Mouthful.
Optionally, in described electrophysiologicalcatheter catheter, the support tube is metal tube or plastic tube.
Optionally, in described electrophysiologicalcatheter catheter, the electrophysiologicalcatheter catheter also includes deflectable section, conduit
Main body and joystick, the distal end of catheter, deflectable section, catheter main body, joystick be sequentially connected,
And the joystick is connected with described deflectable section by bracing wire and enters horizontal deflection control to described deflectable section
System.
In electrophysiologicalcatheter catheter provided by the present invention, sensor, the sensing are set by distal end of catheter
Device includes support tube, at least one strain part and temperature compensation component, and the strain part is used to lead
The first dependent variable is produced under pipe distal contact power and environment temperature collective effect, the temperature compensation component is used for
First dependent variable is compensated, so as to the actual strain amount for obtaining only being produced by distal end of catheter contact force.
In the present invention, there is provided temperature compensation component, is mended with entering trip temperature to the strain size that strain part is measured
Repay, obtain the strain size of the actual generation of contact force, the change of distal contact power can be accurately judged that, carry
Measurement precision high.
Brief description of the drawings
Fig. 1 is the structural representation of the pressure sensor of electrophysiologicalcatheter catheter in the prior art；
Fig. 2 is the result figure varied with temperature using the pressure sensor output measurement result of Fig. 1；
Fig. 3 is the schematic diagram that electrophysiologicalcatheter catheter of the present invention carries out cardiac ablation；
Fig. 4 is the perspective structure schematic diagram of the sensor of electrophysiologicalcatheter catheter distal end in the embodiment of the present invention two；
Fig. 5 is the profile of the pressure sensor of electrophysiologicalcatheter catheter in the embodiment of the present invention two；
Fig. 6 is the spectrogram that voltage is changed over time in the embodiment of the present invention two before electrophysiologicalcatheter catheter temperature-compensating；
Fig. 7 is the spectrogram that voltage is changed over time in the embodiment of the present invention two after electrophysiologicalcatheter catheter temperature-compensating；
Fig. 8 is the perspective structure schematic diagram of the sensor of electrophysiologicalcatheter catheter distal end in the embodiment of the present invention three；
Fig. 9 a and 9b are the structural representations of strain part in the embodiment of the present invention two or three；
Fig. 9 c are the perspective structure schematic diagrames of the sensor of electrophysiologicalcatheter catheter distal end in the embodiment of the present invention four.
In Fig. 1~Fig. 2, pressure sensor 12 '；Support tube 120 '；Foil gauge 121 '；
In Fig. 3~Fig. 9 c, electrophysiologicalcatheter catheter 1；Distal end of catheter 11；Sensor 12；Support tube 120；Deformation
Section 120a；Non- deformation section 120b；Strain part 121；First foil gauge 121a；Second foil gauge 121b；
Macromolecular sheet material 122,122a, 122b；Comb wire 123a, 123b；Deflectable section 13；Conduit master
Body 14；Joystick 15；Buttock line 16；Control panel 17；Puncture sheath 18；Atrium sinistrum 19.
Specific embodiment
Electrophysiologicalcatheter catheter proposed by the present invention is made further specifically below in conjunction with the drawings and specific embodiments
It is bright.According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that,
Accompanying drawing in the form of simplifying very much and uses non-accurately ratio, is only used to conveniently, lucidly aid in
Illustrate the purpose of the embodiment of the present invention.
Fig. 3 is the schematic diagram that electrophysiologicalcatheter catheter of the present invention carries out cardiac ablation.As shown in figure 3, electro physiology is led
Pipe 1 implements ablation by puncturing sheath 18 after entering in atrium sinistrum 19 through inferior caval vein.Embodiments of the invention
The electrophysiologicalcatheter catheter 1 of offer includes the distal end of catheter 11, deflectable section 13, the catheter main body 14 that are sequentially connected
With joystick 15.Distal end of catheter 11 is provided with ablating electrode, can apply energy and be melted, ablating electrode
Material be metal material, can be stainless steel, gold or platinumiridio.Distal end of catheter 11 is additionally provided with
One foil gauge, for producing the first dependent variable under the contact force of distal end of catheter 11 and environment temperature collective effect.
Joystick 15 can be controlled to deflectable section 13, realize deflection.The material of catheter main body 14 is generally
Macromolecular material, can be PU (Polyurethane, polyurethane), PEBAX (nylon elastomer), nylon or
PU with metal net, the diameter of tubing is no more than 9F.
Electrophysiologicalcatheter catheter 1 is connected by buttock line 16 with the control system of rear end, in the control panel of control system
Ablation energy, ablation time can be set on 17, it is also possible to show output work in ablation procedure in real time
The change of rate, impedance, electrode temperature and distal contact power.In the present invention, there is provided temperature compensation division
Part, is carried out with the dependent variable produced by environment temperature in first dependent variable to the first foil gauge for measuring
Compensation, obtains actual strain amount of first foil gauge under the effect of distal contact power, accurately judges that distal end connects
The change of touch.
Embodiment one
In order to reduce influence of the strain of temperature generation to measurement precision, the electrophysiologicalcatheter catheter 1 of the present embodiment
Also include temperature-sensitive sticker, it is arranged at the distal end of catheter 11 and near first as temperature compensation component
Foil gauge, temperature compensation curve of first foil gauge under a certain working condition can be by the supply of foil gauge
Business is provided or is voluntarily measured by user and obtains, and the temperature compensation curve is storable in control system.Therefore,
After the temperature value that temperature-sensitive sticker senses the environment temperature near foil gauge and will sense is exported, control
System can be by temperature compensation curve, and calculate that first foil gauge can produce at a certain temperature second should
Variable.It is that can obtain by remote by mathematical operation after the first dependent variable is obtained by the foil gauge of distal end first
The actual strain amount that termination touch is produced.Temperature sensor is preferably K-type thermocouple, or its alloytype
Thermocouple.
Embodiment two
Although the purpose of temperature-compensating can be reached by way of embodiment one, due to being passed by temperature
Sensor knows temperature, then is known by temperature compensation curve and influenceed the dependent variable that produces by the temperature, and its is accurate
Property can be influenceed by temperature sensor precision and temperature compensation curve accuracy, so as to cause measurement result
It is inaccurate, on the other hand, when the supplier of the first foil gauge fails to provide the temperature compensation curve of foil gauge,
The implementation of this scheme just also needs to voluntarily measurement temperature compensated curve, both inconvenient or inaccurate, therefore,
The present embodiment proposes the technical scheme as temperature compensation component by the second foil gauge.Second foil gauge
Placement location should meet and 1) do not deform upon；2) it is identical with the working environment of the first foil gauge or similar enough.
The characteristic of second foil gauge should meet：Second foil gauge and the first foil gauge have identical resistance temperature
Coefficient, linear expansion coefficient, ga(u)ge factor and initial resistivity value.
As shown in figure 4, electrophysiologicalcatheter catheter 1 also includes support tube 120, strain part 121 and temperature compensation division
Part, the support tube 120 includes elastic deformation section 120a and inelastic deformation section 120b.In the present embodiment,
The strain part 121 includes three the first foil gauge 121a, and the temperature compensation component includes one second
Foil gauge 121b, the first foil gauge 121a and the second foil gauge 121b are identical foil gauge, but because are set
The position put is different and there are different functions.The first foil gauge 121a is arranged at the support tube 120
Elastic deformation section 120a producing under the contact force of the distal end of catheter 11 and environment temperature collective effect the
One dependent variable, the second foil gauge 121b is arranged at the non-deformation section 120b of the support tube 120 with environment
The second dependent variable is produced under temperature action, first dependent variable and second dependent variable is obtained by circuit,
The dependent variable produced by the environment temperature in first dependent variable is mended using second dependent variable
Repay, you can obtain the actual strain amount produced by distal contact power.
Wherein, the support tube 120 is metal tube or plastic tube, the elastic deformation section of the support tube 120
The cleaved techniques of 120a are made, and the inelastic deformation section 120b of the support tube 120 is without cutting technique.It is excellent
Choosing, the elastic deformation of the support tube 120 section 120a has some there is the elastic deformation section 120a
The breach of deformation.In the present embodiment, there is the elastic deformation section 120a of the support tube 120 spirality to lack
Mouthful, to produce different deformation under the contact force of each different directions.As shown in figure 5, it is preferred that should
Become the inside that part 121 is embedded at support tube 120, so as to preferably sense the size of contact force.
In order to preferably illustrate the feasibility of the technical scheme in the present embodiment, the present embodiment is straining part 121
As a example by including three the first foil gauge 121a and a second foil gauge 121b, its collection of illustrative plates is explained
It is bright, specifically refer to Fig. 6 and Fig. 7, Fig. 6 are that voltage is with the time in the embodiment of the present invention one before temperature-compensating
The spectrogram of change；Fig. 7 is the spectrogram that voltage is changed over time in the embodiment of the present invention one after temperature-compensating.
Before temperature-compensating, that is, the first foil gauge 121a (totally three in the present embodiment) and the second foil gauge 121b
(totally one in the present embodiment) perceives the strain size of distal end of catheter 11, as shown in fig. 6, now voltage
Four foil gauges (the first foil gauge 121a and the second foil gauge 121b) are with temperature in the spectrogram for changing over time
The trend of change is all roughly the same, and the strain size that contact force is produced is blanked.After temperature-compensating, also
It is poor with the numerical value of three the first foil gauge 121a using the strain result of the second foil gauge 121b perception
Point, that is, temperature-compensating is obtained, the drift situation of temperature compensated rear baseline is significantly improved, such as Fig. 7
Shown in shown and table 1.
Table 1
Certainly, in other embodiments, the elastic deformation section 120a of support tube and inelastic deformation section 120b
Can also be split-type structural, be two different pipes, support tube can also include bushing pipe and metal tube,
Bushing pipe has the structure corresponding with metal tube, and the bushing pipe is that material is TPU, PVC, PEBAX or Buddhist nun
The plastics or rubber tube of dragon, are connected by epoxylite glue or other adhesive with metal tube, the gold
Category pipe is fixed on the bushing pipe inner side, and the first foil gauge 121a and the second foil gauge 121b circumferentially set
It is placed on the bushing pipe.The first foil gauge 121a be fixed on corresponding to cleaved metal tube described in
On bushing pipe, the second foil gauge 121b be fixed on on the bushing pipe corresponding to not cleaved metal tube.
Preferably, in the tube wall of the strain part 121 insertion bushing pipe.The diameter range of the bushing pipe is 1~3mm,
Preferably 2mm.Because the thickness of foil gauge is very thin, very thin foil gauge is allowed to reduce using lining pipe
Folding line, keeps its sensing capability.Support tube can also have other a variety of structure types, as long as its portion
Dividing can produce deformation, and another part does not produce deformation.
Embodiment three
Embodiment three is that each first foil gauge 121a is correspondingly arranged on one with the difference of embodiment two
Individual second foil gauge 121b carries out temperature-compensating, further increases the precision of strain measurement result.As schemed
Shown in 8, each first foil gauge 121a followed along the axially extending direction of bushing pipe be provided with one second should
Become piece 121b, so as to simulate the working environment residing for the first foil gauge 121a, strain knot is produced to improve temperature
The precision of fruit, and then improve the precision of the strain result that contact force is produced.
Refer to the structural representation that Fig. 9 a and Fig. 9 b understand strain part in the embodiment of the present invention two or three.
Wherein, the first foil gauge 121a and the second foil gauge 121b in strain part 121 can be structure as a whole
Or Split type structure, if the first foil gauge 121a is structure as a whole with the second foil gauge 121b, then specific
Following several structures can be included：
Structure one：As illustrated in fig. 9, the first foil gauge 121a and the second foil gauge 121b is integral type, institute
Stating the first foil gauge 121a includes comb wire 123a, macromolecular sheet material 122a and wire, the comb
Wire 123a refers to that many connected wires are arranged into comb teeth-shaped, and it is fixed on the macromolecular sheet material
In 122a and each wire is parallel with the axial direction of support tube 120, the wire and the comb metal
The end connection of silk 123a is simultaneously stretched out from the macromolecular sheet material 122a；The second foil gauge 121b is also wrapped
Comb wire 123b, macromolecular sheet material 122b and wire are included, the comb wire 123b is fixed on institute
State in macromolecular sheet material 122b and each wire be parallel with the axial direction of the metal tube, the wire with
The end connection of the comb wire 123b is simultaneously stretched out from the macromolecular sheet material 122b.
Now, the first foil gauge 121a and the second foil gauge 121b shares a macromolecular sheet material 122, described
The comb of the arragement direction of the comb wire 123a of the first foil gauge 121a and the second foil gauge 121b
The arragement direction of wire 123b is consistent, and does not interfere with each other, the comb gold of the first foil gauge 121a
The deformation section 120a of the category silk 123a correspondence support tubes 120, to sense the contact of distal end of catheter 11 simultaneously
The change of power and temperature；The non-shape of the comb wire 123b correspondence support tubes 120 of the second foil gauge 121b
Become section 120b, only to sense the change of the temperature of distal end of catheter 11 and its surrounding.During practical application, first should
Become piece 121a and the second foil gauge 121b comb wire 123a, 123b with the axial direction of the support tube
It is parallel.First foil gauge 121a is orthogonal with the wire of the second foil gauge 121b.
Structure two：As shown in figure 9b, the first foil gauge 121a and the second foil gauge 121b are also integral type,
Unlike, the arragement direction of the comb wire 123a of the first foil gauge 121a and described second is strained
The arragement direction of the comb wire 123b of piece 121b is mutually perpendicular to.During practical application, the first foil gauge 121a
Comb wire 123a it is parallel with the axial direction of the support tube, the comb of the second foil gauge 121b
Wire 123b is mutually perpendicular to the axial direction of the support tube.Strain part 121 based on the structure,
Because the comb wire 123b of the second foil gauge 121b is mutually perpendicular to the axial direction of the support tube,
Therefore in 11 axially loaded of distal end of catheter, the second foil gauge 121b will not more be subject to the shadow of distal contact power
Ring, and it is only temperature sensitive；Due to the axle of comb wire 123a and the bushing pipe of the first foil gauge 121a
It is parallel to direction, therefore in 11 axially loaded of distal end of catheter, the first foil gauge 121a can change,
It is simultaneously sensitive to institute's stress and temperature.Can be more accurate using the second foil gauge 121b of the arrangement method mode
The second dependent variable under ground temperature sensor effect.Now, the wire of the first foil gauge 121a can also be answered with second
The wire for becoming piece 121b is connected.In practical application, the second foil gauge 121b is optionally arranged at
Above or below first foil gauge 121a, as long as the second foil gauge 121b is arranged on inelastic deformation section i.e.
Can.
Example IV
As is shown in fig. 9 c, in the present embodiment, the second foil gauge 121b may be disposed at the first foil gauge 121a
Top, positioned at inelastic deformation section.In order to reduce foil gauge production cost and manufacture difficulty, also can be by
One foil gauge 121a and the second foil gauge 121b be designed as it is split type, that is, the first foil gauge 121a comb
Tooth wire 123a is fixed on different macromolecules from the comb wire 123b distributions of the second foil gauge 121b
On sheet material, now, the first foil gauge 121a can be identical with the structure of the second foil gauge 121b, simply exists
During practical application, the arragement direction of the comb wire 123a of the first foil gauge 121a need to be with the support
The axial direction of pipe is parallel, and the arrangement of the comb wire 123b of the second foil gauge 121b is not limited
It is fixed, both being circumferentially arranged along support tube, also can be along the axial arranging of support tube.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is
With the difference of other embodiment, between each embodiment identical similar portion mutually referring to.
To sum up, in electrophysiologicalcatheter catheter provided by the present invention, support tube, extremely is set by distal end of catheter
Few a strain part and temperature compensation component, the strain part are used in distal end of catheter contact force and ring
Produce the first dependent variable under the temperature collective effect of border, the temperature compensation component be used to obtaining environment temperature or
The second dependent variable is produced under the effect of environmental temperature, with first dependent variable by the environment temperature
The dependent variable of generation is compensated, so as to obtain only by the lower actual strain for producing of distal end of catheter contact force effect
Amount.In the present invention, there is provided temperature compensation component, therefore the strain of the actual generation of contact force can be obtained
Size, can accurately judge that the change of distal contact power, improve measurement precision.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention,
Any change, modification that the those of ordinary skill in field of the present invention does according to the disclosure above content, belong to power
The protection domain of sharp claim.
Claims (14)
1. a kind of electrophysiologicalcatheter catheter, with distal end of catheter, it is characterised in that be included in the distal end of catheter and set
Ablating electrode, support tube, at least one strain part and the temperature compensation component put；The support tube with
The ablating electrode is connected, and the strain part is all arranged at the support tube with the temperature compensation component,
The support tube has elastic deformation section；The strain part is arranged at the elastic deformation section, in institute
The first dependent variable, the temperature compensation division are produced under the contact force and environment temperature collective effect of stating distal end of catheter
Part is used to compensate the dependent variable produced by the environment temperature in first dependent variable, so as to obtain
Only by the lower actual strain amount for producing of contact force effect.
2. electrophysiologicalcatheter catheter as claimed in claim 1, it is characterised in that the strain part is first should
Become piece；The temperature compensation component is temperature sensor, for sensing the environment temperature, and and then is passed through
The temperature compensation curve of first foil gauge, there is provided first foil gauge is under the effect of environmental temperature
Produce the second dependent variable, second dependent variable be used in first dependent variable by the environment temperature
The dependent variable of generation is compensated.
3. electrophysiologicalcatheter catheter as claimed in claim 1, it is characterised in that the strain part is first should
Become piece；The temperature compensation component is the second foil gauge, for producing second under the effect of environmental temperature
Dependent variable, second dependent variable is entered to the dependent variable produced by the environment temperature in first dependent variable
Row compensation, first foil gauge with second foil gauge there is identical temperature-coefficient of electrical resistance, line to expand
Coefficient, ga(u)ge factor and initial resistivity value.
4. electrophysiologicalcatheter catheter as claimed in claim 3, it is characterised in that the support tube also includes non-ballistic
Property deformation section, first foil gauge be arranged at the support tube the elastic deformation section, described second should
Become the inelastic deformation section that piece is arranged at the support tube.
5. electrophysiologicalcatheter catheter as claimed in claim 3, it is characterised in that first foil gauge includes comb
Tooth wire, macromolecular sheet material and wire, the comb wire are fixed in the macromolecular sheet material and institute
Each wire stated in comb wire is parallel with the axial direction of the support tube, the wire and the comb
Wire is connected and is stretched out from the macromolecular sheet material, for the electronics being connected in electrophysiologicalcatheter catheter handle
Part.
6. electrophysiologicalcatheter catheter as claimed in claim 5, it is characterised in that second foil gauge includes comb
Tooth wire, macromolecular sheet material and wire, the comb wire are fixed in the macromolecular sheet material and institute
Each wire stated in comb wire is parallel with the axial direction of the support tube, the wire and the comb
Wire is connected and is stretched out from the macromolecular sheet material, for the electronics being connected in electrophysiologicalcatheter catheter handle
Part.
7. electrophysiologicalcatheter catheter as claimed in claim 5, it is characterised in that second foil gauge includes comb
Tooth wire, macromolecular sheet material and wire, the comb wire are fixed in the macromolecular sheet material and institute
Each wire stated in comb wire is perpendicular with the axial direction of the support tube, the wire and the comb
Wire is connected and is stretched out from the macromolecular sheet material, for the electronics being connected in electrophysiologicalcatheter catheter handle
Part.
8. electrophysiologicalcatheter catheter as claimed in claim 3, it is characterised in that first foil gauge with it is described
Second foil gauge is integral type or split type.
9. electrophysiologicalcatheter catheter as claimed in claim 3, it is characterised in that first foil gauge with it is described
Second foil gauge is all multiple, evenly along being circumferentially arranged for the electrophysiologicalcatheter catheter, each second strain
Piece along electrophysiologicalcatheter catheter the front end or rear end that are axially set in first foil gauge.
10. electrophysiologicalcatheter catheter as claimed in claim 4, it is characterised in that the elastic shape of the support tube
Becoming section has some breach for deforming upon the deformation section.
11. electrophysiologicalcatheter catheters as claimed in claim 10, it is characterised in that the elastic shape of the support tube
Becoming section has spiral v notch v.
12. electrophysiologicalcatheter catheters as claimed in claim 10, it is characterised in that the support tube is metal tube
Or plastic tube.
13. electrophysiologicalcatheter catheter as any one of claim 1-10, it is characterised in that the strain
Part is arranged in the tube wall of the support tube.
14. electrophysiologicalcatheter catheter as any one of claim 1-10, it is characterised in that the electricity is raw
Reason conduit also includes deflectable section, catheter main body and joystick, the distal end of catheter, deflectable section, lead
Pipe main body, joystick are sequentially connected, and the joystick is connected simultaneously by bracing wire with described deflectable section
Enter horizontal deflection control to described deflectable section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927223.7A CN106859762B (en) | 2015-12-11 | 2015-12-11 | Electrophysiology catheter |
| PCT/CN2016/108875 WO2017097200A1 (en) | 2015-12-11 | 2016-12-07 | Electrophysiology catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927223.7A CN106859762B (en) | 2015-12-11 | 2015-12-11 | Electrophysiology catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106859762A true CN106859762A (en) | 2017-06-20 |
| CN106859762B CN106859762B (en) | 2020-01-24 |
Family
ID=59013744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510927223.7A Active CN106859762B (en) | 2015-12-11 | 2015-12-11 | Electrophysiology catheter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106859762B (en) |
| WO (1) | WO2017097200A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109953813A (en) * | 2017-12-25 | 2019-07-02 | 四川锦江电子科技有限公司 | A kind of cryoablation conduit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132730A (en) * | 2005-03-04 | 2008-02-27 | 恩杜森斯公司 | System for mapping and intervention of an organ within the human or animal body |
| US20080294144A1 (en) * | 2007-05-24 | 2008-11-27 | Giovanni Leo | Touch Sensing Catheter |
| CN102160909A (en) * | 2009-12-28 | 2011-08-24 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with strain gauge sensor |
| CN102269567A (en) * | 2010-06-03 | 2011-12-07 | 陈彦平 | Self-compensating integrated strain gauge of concrete |
| CN203915066U (en) * | 2014-06-06 | 2014-11-05 | 乐普（北京）医疗器械股份有限公司 | A kind of medical catheter head end that can measuring pressure |
| US20140350547A1 (en) * | 2006-05-02 | 2014-11-27 | Biosense Webster, Inc. | Catheter with omni-directional optical lesion evaluation |
| CN204072317U (en) * | 2014-09-02 | 2015-01-07 | 上海微创电生理医疗科技有限公司 | A kind of ablation catheter |
| CN204318750U (en) * | 2014-11-27 | 2015-05-13 | 上海微创电生理医疗科技有限公司 | A kind of electrophysiologicalcatheter catheter |
| CN204744408U (en) * | 2015-06-30 | 2015-11-11 | 四川锦江电子科技有限公司 | Melt device with pressure detection |
-
2015
- 2015-12-11 CN CN201510927223.7A patent/CN106859762B/en active Active
-
2016
- 2016-12-07 WO PCT/CN2016/108875 patent/WO2017097200A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132730A (en) * | 2005-03-04 | 2008-02-27 | 恩杜森斯公司 | System for mapping and intervention of an organ within the human or animal body |
| US20140350547A1 (en) * | 2006-05-02 | 2014-11-27 | Biosense Webster, Inc. | Catheter with omni-directional optical lesion evaluation |
| US20080294144A1 (en) * | 2007-05-24 | 2008-11-27 | Giovanni Leo | Touch Sensing Catheter |
| CN102160909A (en) * | 2009-12-28 | 2011-08-24 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with strain gauge sensor |
| CN102269567A (en) * | 2010-06-03 | 2011-12-07 | 陈彦平 | Self-compensating integrated strain gauge of concrete |
| CN203915066U (en) * | 2014-06-06 | 2014-11-05 | 乐普（北京）医疗器械股份有限公司 | A kind of medical catheter head end that can measuring pressure |
| CN204072317U (en) * | 2014-09-02 | 2015-01-07 | 上海微创电生理医疗科技有限公司 | A kind of ablation catheter |
| CN204318750U (en) * | 2014-11-27 | 2015-05-13 | 上海微创电生理医疗科技有限公司 | A kind of electrophysiologicalcatheter catheter |
| CN204744408U (en) * | 2015-06-30 | 2015-11-11 | 四川锦江电子科技有限公司 | Melt device with pressure detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109953813A (en) * | 2017-12-25 | 2019-07-02 | 四川锦江电子科技有限公司 | A kind of cryoablation conduit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017097200A1 (en) | 2017-06-15 |
| CN106859762B (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11596493B2 (en) | Strain gauge, pressure sensor, and interventional medical catheter | |
| CN110063788B (en) | Pressure sensor and electrophysiology catheter | |
| CN102727207B (en) | Power for the macrobending angle of conduit is measured | |
| CN103385706B (en) | Position catheter sheath end points | |
| JP6121506B2 (en) | Catheter having a distal tip for sensing contact force | |
| US8852130B2 (en) | Catheter with strain gauge sensor | |
| JP5836697B2 (en) | Catheter with thin film pressure sensitive distal tip | |
| US8211102B2 (en) | Contact sensing flexible conductive polymer electrode | |
| CN101721246A (en) | Force-sensing catheter with bonded center strut | |
| CN204744408U (en) | Melt device with pressure detection | |
| CN105092117A (en) | Piezoresistive pressure sensor and preparation method thereof | |
| EP2664275A2 (en) | Guide wire with position sensing electrodes for localization via measurement of bioimpedance | |
| CN109632140A (en) | A kind of temperature sensor and temperature-detecting device | |
| CN107683118A (en) | The transseptal systems of RF of magnetic resonance compatible | |
| CN106859762A (en) | Electrophysiologicalcatheter catheter | |
| Laaraibi et al. | Flexible dynamic pressure sensor for insole based on inverse viscoelastic model | |
| CN104586499B (en) | A kind of catheter | |
| Chatzipirpiridis et al. | Miniaturized magnetic force sensor on a catheter tip | |
| CN109984838B (en) | Take electrophysiology pipe of pressure perception | |
| CN213216935U (en) | Fingering acquisition sensor | |
| AU2015202549B2 (en) | Catheter with strain gauge sensor | |
| Chen et al. | Building a Real Time Plantar Force Measurement Sensor With LC Resonator | |
| CN2575669Y (en) | Automatic fast colorimetric analyzer | |
| SĂLCEANU et al. | Approaches on measurements of human skin electrical resistance | |
| CN107928639A (en) | A kind of Pulse Signals extraction element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-eighth 1-28 Patentee after: SHANGHAI MICROPORT EP MEDTECH Co.,Ltd. Address before: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-eighth 1-28 Patentee before: SHANGHAI MICROPORT EP MEDTECH Co.,Ltd. |