CN106606373A - Ablation catheter capable of accurate pressure measurement - Google Patents
Ablation catheter capable of accurate pressure measurement Download PDFInfo
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- CN106606373A CN106606373A CN201610771149.9A CN201610771149A CN106606373A CN 106606373 A CN106606373 A CN 106606373A CN 201610771149 A CN201610771149 A CN 201610771149A CN 106606373 A CN106606373 A CN 106606373A
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- 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
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- 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
- A61B18/14—Probes or electrodes therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
- A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
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- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
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- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00589—Coagulation
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- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
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- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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- 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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
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Abstract
The invention relates to the field of ablation catheters and especially relates to an ablation catheter capable of accurate pressure measurement. The ablation catheter comprises a tube body, an elastic body and a tail end electrode, wherein an infusion tube and multiple electrodes used for mapping or ablation are disposed on the tube body, and the tube body has a remote end section and is a remote end tube body; the tail end electrode is connected to a free end of the remote end tube body by the elastic body; and partial areas are divided from the elastic body via a hollow structure and taken as a non-force bearing area, other areas on the elastic body are force bearing areas, the non-force bearing areas do not get deformed and the force bearing areas get deformed when the tail end electrode is stressed to drive deformation of the elastic body, and at least one pressure sensor is installed in the force bearing areas and the non-force bearing areas respectively. The invention aims to provide the ablation catheter capable of the accurate pressure measurement, wherein requirements for equipment are low; the structure is simple; the manufacture cost is relatively low; a temperature compensation function is provided; and accuracy of pressure measurement is increased.
Description
Technical field
The present invention relates to ablation catheter field, more particularly to a kind of ablation catheter of accurate dynamometry.
Background technology
Arrhythmia cordis is one of common ARR disease in the world, and clinically application catheter has carried out radio-frequency ablation procedure
It is widely used in treating such disease.Position and surrounding myocardium that RF energy passes through conduit to electrode and electrode contact
Organize to melt.Only disappear under the conditions of the electrode of distal end of catheter and the contact of cardiac muscular tissue are suitable through clinical confirmation
Melt and can be only achieved preferable therapeutic effect.When ablation catheter is treated, inserted the catheter in heart, and make distal end of catheter and the heart
Dirty inwall contact, in the process it is generally important that making the good contact wall of the heart in the distal end of conduit and determining correct
Recline direction and position, and otherwise, excessive pressure or the incorrect position that reclines is likely to result in damage worthless to heart tissue
Wound, or even heart wall perforation, while similarly most important to being accurately positioned for conduit.
Existing technology is the pressure that reclines that distal end and tissue are measured using electromagnetism or optical technology, to equipment requirement
Higher and complexity, manufacturing cost is also of a relatively high.
Carry out sensing tube using the sensor of magnetic induction as mentioned adding in the catheter in Chinese patent CN103908337AZ
The contact force of distal end and organ, this sensor in the application easily by external magnetic field interference and distortion, and the technology needs to exist
Multiple Magnetic Sensor technology difficulties are installed big in the minimum space of catheter distal tip, so as to increased manufacturing cost.
In Development of Modern Science, also there is consideration to measure pressure using strain gauge merely, but itself receives temperature shadow
Ring big, therefore do not have the catheter pressure using strain gauge mode so far；
Meanwhile, the simple conduit positioned using electricity is difficult to accurately determine catheter position.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, there is provided a kind of relatively low to equipment requirement
And the accurate dynamometry that simple structure, manufacturing cost are relatively low, possess temperature compensation function, improving tonometric accuracy
Ablation catheter.
In order to realize foregoing invention purpose, the invention provides technical scheme below：
A kind of ablation catheter of accurate dynamometry, it includes：
Body, is provided with intrusion pipe and some for mapping or the electrode of ablation on the body, the body possesses distal end
Section, is distal end body；
Elastomer；
End electrodes, the end electrodes are connected with the free end of the distal end body by the elastomer；
It is non-stress area to be partitioned into subregion by engraved structure on the elastomer, and other regions are then stress on elastomer
Area, when the end electrodes stress drives the elastomer deformation, the non-stress area does not deform upon, and force area occurs shape
Become, in the force area and non-stress area at least one pressure sensor is mounted on.
By arranging the force area and non-stress area on elastomer, then it is respectively provided with force area and non-stress area
At least one pressure sensor, the pressure sensor in non-stress area is used for the pressure value produced by measurement temperature, then stress
The pressure value that pressure sensor in area is measured deducts the pressure value that the pressure sensor on force area is measured, that is, obtain accurately
Pressure suffered by elastomer, has carried out temperature-compensating；
Concrete principle is that the pressure sensor that a pressure sensor for being affixed on force area is attached to non-stress area with another coordinates,
Force area pressure sensor numerical value is the sum that stress numerical value affects numerical value plus temperature, and the pressure sensor in non-stress area is only temperature
The numerical value that degree affects, because 2 pressure sensors are all disposed within elastomer, apart from close, therefore 2 temperature will be height
It is consistent, then force area pressure sensor numerical value is deducted into the pressure sensor numerical value in non-stress area, as pressure sensor
Real dynamometry numerical value, possesses temperature compensation function, improves tonometric accuracy；
And the pressure that reclines that distal end and tissue are measured using electromagnetism or optical technology is compared to, it is relatively low to equipment requirement
And simple structure, manufacturing cost are relatively low.
Used as the preferred version of the present invention, the elastomer surrounding is provided with flexible pipe body, and flexible pipe body two ends connect respectively
Connect and seamlessly transit in end electrodes and distal end body, the setting of flexible pipe body can effectively to elastomer and pressure sensing
Device is protected, and is improved service life and is ensured dynamometry precision.
Used as the preferred version of the present invention, some on the body is ring electrode for mapping or the electrode of ablation, mapping
Or the effect of ablation is more preferable.
As the preferred version of the present invention, temperature sensor is provided with the end electrodes, for detecting end electrodes
The situation that tissue around temperature is melted with Real-time Feedback.
As the preferred version of the present invention, it is installed with least inside the distal end body, elastomer or end electrodes
Magnetic field generator outside the Magnetic Sensor that two axis are not parallel to each other, Magnetic Sensor and conduit is used cooperatively, Magnetic Sensor
Specific position and direction can be detected in magnetic field, the Magnetic Sensor that two axis are not parallel to each other then can be accurate
Determine the position and direction of conduit.
Used as the preferred version of the present invention, the elastomer is tubular type, the non-stress area and force area circumferentially between
Every setting, structure is simpler, and processing cost is low, and on elastomer non-stress area and force area deformation it is more controllable, also more
Convenient to arrange corresponding pressure sensor, the effect to measuring is also more accurate.
Used as the preferred version of the present invention, the pressure sensor is symmetrically disposed in elastomer both sides, pressure sensor
It is symmetrically distributed, the value that pressure sensor reflects when perceiving stretching and compressing can regard a vector as, with direction
Property（Have positive and negative）, the value in the corresponding different sensors of pressure for making different directions different has uniqueness.
Pressure is measured with direction is drawn using statistics lookup table mode, is measured first when known various pressure are with various directions
The different numerical value group of pressure sensor is measured, the corresponding relation for obtaining is organized into into database purchase in a device, in application
When searched in database according to the pressure sensor numerical value for detecting according to equipment, according to uniqueness, one or one group of pressure
Sensor values can only find a corresponding power in database and direction is matching, then pressure sensor is symmetrically arranged
Effectively pressure and direction can be calculated according to measurement result.
As the preferred version of the present invention, the pressure sensor circumferentially arranged successively, adjacent non-stress area
With at least one pressure sensor is arranged with force area and one group is classified as into, with the pressure sensor of group by the temperature
The mode of compensation measures accurately pressure value, and successively circumferentially arranged then makes pressure sensor possess many to pressure sensor
Group, forms multigroup accurately pressure value, then coordinates the sensor values in above-mentioned database, can effectively calculate elastomer institute
It is stressed and direction, and distal end body or the pressure suffered by end electrodes and direction.
Used as the preferred version of the present invention, the engraved structure is U-type groove, and structure is simpler, is easy to processing, while also just
In symmetrical circumferentially setting, elastomer 7 is set to be changed more notable by ambient pressure.
Used as the preferred version of the present invention, the U-type groove is circumferentially arranged on around elastomer, and setting direction and elasticity
Body axis form an angle, and are compared to the axially in parallel situation of U-type groove setting direction and elastomer, this programme elastomer
Deformation range is bigger, and the adaptability of whole conduit and distal catheter and end electrodes is higher.
Compared with prior art, beneficial effects of the present invention：
And simple structure, manufacturing cost relatively low to equipment requirement are relatively low, possess temperature compensation function, improve pressure measxurement
Accuracy.
Description of the drawings：
Fig. 1 is conduit application schematic diagram in embodiment 1；
Fig. 2 is distal end of catheter schematic diagram in embodiment 1；
Fig. 3 is distal end of catheter schematic internal view in embodiment 1；
Fig. 4 is distal end of catheter sectional view in embodiment 1；
Fig. 5 is pressure sensor schematic diagram in embodiment 1；
Fig. 6 is distal end of catheter overall schematic in embodiment 1；
Fig. 7 is conduit integrally bending schematic diagram in embodiment 1；
Fig. 8 is the elastomer schematic diagram of embodiment 1；
Fig. 9 is the elastomer force area of embodiment 1 and non-stress area schematic diagram；
Figure 10 is the schematic diagram that pressure sensor is fitted on elastomer in embodiment 1；
Mark in figure：1. end electrodes, 2. ring electrode A, 3. ring electrode B, 4. ring electrode C, 5. distal end body, 6. flexible pipe body,
7. elastomer, 8. intrusion pipe, 9. pressure sensor, 101. Magnetic Sensor A, 102. Magnetic Sensor B, the perfusion of 11. end electrodes
Hole, 12. cardiac muscular tissues, 21. annular electrode D, 22. annular electrode E, 71. elastomer non-stress areas, 72. elastomer force areas,
73.U type grooves.
Specific embodiment
With reference to embodiment and specific embodiment, the present invention is described in further detail.But this should not be understood
Scope for above-mentioned theme of the invention is only limitted to below example, and all technologies realized based on present invention belong to this
The scope of invention.
Embodiment 1
Such as Fig. 1-10, a kind of ablation catheter of accurate dynamometry（Fig. 1 be the conduit application schematic diagram, the end on distal catheter 5
Electrode 1 recline cardiac muscular tissue 12 when, the opposite proximal end conduit 5 of end electrodes 1 bends, and the part of elastomer 7 deforms）, its
Including：
Body, is provided with intrusion pipe 8 and some for mapping or the electrode of ablation on the body, the body possesses distal end
Section, is distal end body 5；
End electrodes 1, the end electrodes 1 are connected with the free end of the distal end body 5 by the elastomer 7, the end
Temperature sensor is provided with termination electrode 1, multiple end electrodes fill orifices 11, end electrodes perfusion are disposed with end electrodes 1
Hole 11 connects intrusion pipe 8, for irrigating liquid in ablation；
Elastomer 7（Nature can be back to after removing the pressure in end electrodes 1 are made）, the surrounding of the elastomer 7 is provided with
Flexible pipe body 6（As Fig. 2,4, the material of flexible pipe body 6 can be made up of PVC or other relatively soft materials）, the two ends of flexible pipe body 6 point
Do not connect and seamlessly transit in end electrodes 1 and distal end body 5.
Pass through engraved structure on the elastomer 7（The engraved structure is U-type groove 73, and elastomer U-type groove 73 is also used simultaneously
Elastic and overall elasticity in the axial direction for increasing elastomer 7, makes elastomer 7 be changed more notable by ambient pressure, this
The material of embodiment elastomer 7 is stainless steel or high resiliency nickel-titanium alloy material）Subregion is partitioned into for non-stress area
71, other regions are then force area 72 on elastomer 7, when the stress of the end electrodes 1 drives 7 deformation of elastomer, institute
State non-stress area 71 not deform upon, force area 72 deforms upon, be mounted in the force area 72 and non-stress area 71 to
A few pressure sensor 9.
Some on the body is ring electrode for mapping or the electrode of ablation（Specifically include ring electrode A2, ring electrode B3,
Ring electrode C4, annular electrode D21, annular electrode E22, such as Fig. 2,6, be disposed with distal end body 5 ring electrode A2, ring electrode B3,
Ring electrode C4, for ablation or mapping, intrusion pipe 8 is positioned over inside distal end body 5, such as Fig. 7, annular electrode D21, annular electrode
E22 is arranged in body deflection section, and annular electrode D21 and annular electrode E22 and end electrodes 1 when section bends are deflected 3 are passed through
Put into the bending direction that face principle determines body）.
At least two axis are installed with inside the distal end body 5, elastomer 7 or end electrodes 1 not to be parallel to each other
Magnetic Sensor（Magnetic Sensor A101, Magnetic Sensor B102 are specifically included, Magnetic Sensor 101, Magnetic Sensor 102 are set to phase
Position is kept necessarily and with certain angle（0°-70°）, it is magnetic in Magnetic Sensor 101, the present embodiment of Magnetic Sensor 102
Coil, each Magnetic Sensor can determine it in locus, as shown in Fig. 4,10, magnetic field is provided with outside Magnetic Sensor and is sent out
Raw device, magnetic field generator can launch multiple magnetic fields, induced-current can be produced on Magnetic Sensor, be fed back in controller by wire
Carry out processing the position for obtaining Magnetic Sensor in magnetic field, a magnetic field of radiation is a plane spatially, magnetic sensing
On this plane induced electricity flow valuve size can determine that Magnetic Sensor position on this plane to device, and multiple magnetic fields are multiple flat
Face crosses the Magnetic Sensor spatially particular location that can determine that, the Magnetic Sensor 101, Magnetic Sensor 102 when 2 or more is consolidated
Determine relative position and angle, 2 space coordinates is regarded as into a new coordinate（x1,y1,z1,x2,y2,z2）, when body is rotated
When this coordinate there is uniqueness, therefore can accurately judge position and the rotational angle of conduit, enable conduit in ablation more
Plus accurately find lesion tissue and melt the direction that reclines of head end）.
The elastomer 7 is tubular type, and the non-stress area 71 and force area 72 circumferentially interval setting, the pressure is passed
Sensor 9 is symmetrically disposed in the both sides of elastomer 7, and specifically, the circumferentially arranged successively of the pressure sensor 9 is adjacent
At least one pressure sensor 9 is arranged with non-stress area 71 and force area 72 and one group is classified as into, the ring of the U-type groove 73
Be arranged on around elastomer 7, and setting direction and the axis of elastomer 7 form an angle, and U-type groove 73 is 3, such as Fig. 3,8,9,
10, it is 3 non-stress areas 71 and 3 force areas 72 7 points of elastomer, and interval setting successively, 6 pressures are placed on elastomer 7
9,6 pressure sensors 9 of force snesor are arranged circumferentially in the same level axially vertical with elastomer 7, wherein 3 pressure
Sensor 9 is affixed on the pressure sensor 9 of force area 72,3 and is affixed on non-stress area 73（Totally three groups）, adjacent 2 pressure sensors 9
For one group, the pressure sensor 9 that a pressure sensor 9 for being affixed on force area 72 is attached to non-stress area 73 with another will be carried out
Composition half-bridge, for temperature-compensating, enable conduit accurate measurement recline tissue pressure and from ambient temperature interference, it is concrete former
Manage the pressure sensor 9 for being attached to non-stress area 73 with another for a pressure sensor 9 for being affixed on force area 72 and constitute half-bridge
Afterwards, the numerical value of 72 pressure sensor of force area 9 affects the sum of numerical value, the pressure sensing in non-stress area 73 for stress numerical value plus temperature
Device 9 is only the numerical value that temperature affects, because 2 pressure sensors 9 are in the same level circumference of elastomer 7 and adjacent, therefore
Both temperature will be highly consistent, then the numerical value of 72 pressure sensor of force area 9 is deducted into the pressure sensing in non-stress area 73
The real dynamometry numerical value of the numerical value of device 9, as pressure sensor 9, in the same manner, in addition 2 groups will try to achieve other 2 stress numerical value.
Meanwhile, such as Fig. 9,10,6 pressure sensors 9 are symmetrical on elastomer 7（The structure of pressure sensor 9 is concrete
Such as Fig. 5, it is made up of 1 group of wire grid inside pressure sensor 9, the wire grid is piezo-resistance its resistance when it is subject to external force to act on
Will change therewith）.The symmetrical distribution of 6 pressure sensors 9, while pressure sensor 9 is when perceiving stretching and compressing
The value of reflection can regard a vector as, with directionality（Have positive and negative）, the pressure for making different directions different is corresponding three groups
Value on sensor has uniqueness.
Pressure is measured with direction is drawn using statistics lookup table mode, is measured first when known various pressure are with various directions
Measure the different numerical value group of pressure sensor（The numerical value of 3 groups of pressure sensors 9 has positive and negative）, the corresponding relation for obtaining is whole
Manage into database purchase in a device, using when according to equipment according to the numerical value of pressure sensor 9 for detecting in database
Search, according to uniqueness, one group of numerical value of pressure sensor 9 can only find a corresponding power and direction therewith in database
Match somebody with somebody, then pressure sensor 9 is symmetrically arranged effectively can calculate pressure and direction according to measurement result.
Claims (10)
1. a kind of ablation catheter of accurate dynamometry, it includes：
Body, is provided with intrusion pipe and some for mapping or the electrode of ablation on the body, the body possesses distal end
Section, is distal end body；
Elastomer；
End electrodes, the end electrodes are connected with the free end of the distal end body by the elastomer；
Characterized in that,
It is non-stress area to be partitioned into subregion by engraved structure on the elastomer, and other regions are then stress on elastomer
Area, when the end electrodes stress drives the elastomer deformation, the non-stress area does not deform upon, and force area occurs shape
Become, in the force area and non-stress area at least one pressure sensor is mounted on.
2. the ablation catheter of a kind of accurate dynamometry according to claim 1, it is characterised in that the elastomer surrounding is arranged
Flexible body, flexible pipe body two ends connect respectively and seamlessly transit in end electrodes and distal end body.
3. the ablation catheter of a kind of accurate dynamometry according to claim 1, it is characterised in that some on the body to be used for
Mapping or the electrode of ablation are ring electrode.
4. the ablation catheter of a kind of accurate dynamometry according to claim 1, it is characterised in that arrange in the end electrodes
There is temperature sensor.
5. the ablation catheter of a kind of accurate dynamometry according to claim 1-4 any one, it is characterised in that the distal end
The Magnetic Sensor that at least two axis are not parallel to each other is installed with inside body, elastomer or end electrodes.
6. the ablation catheter of a kind of accurate dynamometry according to claim 5, it is characterised in that the elastomer is pipe
Type, the non-stress area and force area circumferentially interval setting.
7. the ablation catheter of a kind of accurate dynamometry according to claim 6, it is characterised in that the pressure sensor is symmetrical
Be arranged on elastomer both sides.
8. the ablation catheter of a kind of accurate dynamometry according to claim 7, it is characterised in that the pressure sensor is successively
At least one pressure sensor is arranged with circumferentially arranged, adjacent non-stress area and force area and be classified as into one
Group.
9. the ablation catheter of a kind of accurate dynamometry according to claim 8, it is characterised in that the engraved structure is U-shaped
Groove.
10. the ablation catheter of a kind of accurate dynamometry according to claim 9, it is characterised in that the U-type groove circumferentially sets
Put around elastomer, and setting direction and elastic body axis form an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771149.9A CN106606373B (en) | 2016-08-30 | 2016-08-30 | A kind of ablation catheter of accurate dynamometry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771149.9A CN106606373B (en) | 2016-08-30 | 2016-08-30 | A kind of ablation catheter of accurate dynamometry |
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| CN106606373B CN106606373B (en) | 2019-02-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143481A (en) * | 2016-12-02 | 2018-06-12 | 四川锦江电子科技有限公司 | A kind of ablation catheter and the ablating device for including this conduit |
| WO2018228290A1 (en) * | 2017-06-15 | 2018-12-20 | 上海微创电生理医疗科技股份有限公司 | Strain gauge, pressure sensor, and interventional medical catheter |
| CN111001075A (en) * | 2019-12-24 | 2020-04-14 | 四川锦江电子科技有限公司 | Catheter with form and position display and method thereof |
| CN112197687A (en) * | 2020-09-27 | 2021-01-08 | 四川锦江电子科技有限公司 | Strain gauge for catheter |
| CN114271924A (en) * | 2020-09-27 | 2022-04-05 | 四川锦江电子科技有限公司 | Grid partition based catheter calibration method and device |
| CN114832201A (en) * | 2022-03-15 | 2022-08-02 | 介入科技发展(深圳)有限公司 | Catheter and system capable of identifying direction of blood vessel |
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| 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 |
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| WO2014145139A1 (en) * | 2013-03-15 | 2014-09-18 | St. Jude Medical, Cardiology Division, Inc. | Force-sensing ablation catheter |
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Cited By (10)
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| CN108143481A (en) * | 2016-12-02 | 2018-06-12 | 四川锦江电子科技有限公司 | A kind of ablation catheter and the ablating device for including this conduit |
| WO2018228290A1 (en) * | 2017-06-15 | 2018-12-20 | 上海微创电生理医疗科技股份有限公司 | Strain gauge, pressure sensor, and interventional medical catheter |
| US11596493B2 (en) | 2017-06-15 | 2023-03-07 | Shanghai Microport Ep Medtech Co., Ltd. | Strain gauge, pressure sensor, and interventional medical catheter |
| CN111001075A (en) * | 2019-12-24 | 2020-04-14 | 四川锦江电子科技有限公司 | Catheter with form and position display and method thereof |
| CN112197687A (en) * | 2020-09-27 | 2021-01-08 | 四川锦江电子科技有限公司 | Strain gauge for catheter |
| CN114271924A (en) * | 2020-09-27 | 2022-04-05 | 四川锦江电子科技有限公司 | Grid partition based catheter calibration method and device |
| CN112197687B (en) * | 2020-09-27 | 2022-04-05 | 四川锦江电子科技有限公司 | Strain gauge for catheter |
| CN114271924B (en) * | 2020-09-27 | 2024-03-01 | 四川锦江电子医疗器械科技股份有限公司 | Catheter calibration method and device based on grid partition |
| CN114832201A (en) * | 2022-03-15 | 2022-08-02 | 介入科技发展(深圳)有限公司 | Catheter and system capable of identifying direction of blood vessel |
| CN114832201B (en) * | 2022-03-15 | 2023-09-01 | 介入科技发展(深圳)有限公司 | Catheter and system capable of identifying blood vessel direction |
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