CN105232147A - Ultrasonic probe for catheter positioning - Google Patents
Ultrasonic probe for catheter positioning Download PDFInfo
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- CN105232147A CN105232147A CN201510798051.8A CN201510798051A CN105232147A CN 105232147 A CN105232147 A CN 105232147A CN 201510798051 A CN201510798051 A CN 201510798051A CN 105232147 A CN105232147 A CN 105232147A
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Abstract
The invention discloses an ultrasonic probe for catheter positioning and relates to the technical field of medical instruments. The ultrasonic probe aims at solving the technical problems that the position of the head of an ablation catheter is accurately determined in a heart ablation operation, the safety of ablation treatment is improved, and the success rate of the operation is increased. The ultrasonic probe mainly comprises an ultrasonic transducer annularly distributed at the front end of the catheter and a circuit interface allowing an ultrasonic unit needed for work of the probe to conduct data exchange with the exterior. In the operation, the closed contour of an inner cavity of the heart can be obtained through annularly-distributed wafers, curve characteristic matching is conducted on the closed contour, acquired in real time, of the inner cavity of the heart and a heart three-dimensional vector model established before the operation, and then the ablation catheter can be accurately positioned in the heart. By means of the method, the position of the ablation catheter in the heart can be determined, the bend rotation angle of the catheter can also be determined, the accuracy of ablation can be improved, and the success rate of ablation can be increased.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly blood vessel and intracardiac localization by ultrasonic intervention diagnosis and treatment technique with the apparatus field.
Background technology
Atrial fibrillation (atrial fibrillation) is common arrhythmia disease, not only affects quality of life, can also cause that apoplexy or heart failure etc. are disabled, the complication of lethal, endangers larger.Catheter ablation is, by peripheral blood vessel, ablation apparatus is sent into heart, causes the ARR method of local myocardial necrosis therapeutic by high frequency electric energy.The position of present ablation catheter in heart is mostly determined in conjunction with location technology by means of electromagnetism, electric field or magnetoelectricity.Although Magnetic oriented precision is higher, require in operation process, patient can not change in the position in magnetic field, and actual to realize difficulty large; During electric field location, electrode paste is at patient, can be easy to ensure that heart relative position is constant, but positioning precision is inadequate, so often carry out irradiation auxiliary positioning by X-ray in actual operation process, so just makes patient and doctor all be exposed in the middle of ray.So be badly in need of a kind of more accurate, harmless localization method now.
Along with the development of modern medicine image technology, ultrasonic image is also day by day remarkable to the help of clinical disease diagnosis work.For ultrasonic diagnosis, the ultrasonoscopy obtained now is body local fault image, is not similar to the network for location that CT, MRI check, if diagnostician does not operate in person, for a static ultrasonoscopy, doctor often cannot judge that this figure is the section at what position, diagnosis of more having no way of.
For the problems referred to above, the present invention discloses a kind of ring-shaped ultrasonic probe for ablation catheter location, do not need in using to obtain ultrasonoscopy clearly, only need accurate cardiac lumen profile, then mate with existing cardiac three-dimensional vector model march line features, the object of accurately location can be reached.
Summary of the invention
The object that the present invention realizes is, realizes the accurate location of ablation catheter in heart by means of this ultrasonic probe, thus improves the safety of accuracy and the operation of melting.Probe disclosed in this invention, wafer annular spread is in catheter proximal end.Described probe has ultrasonic wave generator unit, and ultrasonic wave generator unit sends ultrasound wave to object, receives the ultrasonic echo from object and is exported as the signal of telecommunication by the echo received.Then the transmitted in both directions of data is realized by means of circuit interface.Described probe can be integrated on an ablation catheter together with ablating electrode, to complete catheter positioning and to melt two tasks.
Used crystal chip of the present invention is made up of some array element, described array element is furnished with ultrasonic sensitive unit.
The crooked position of conduit should be avoided when the present invention's probe used is installed.
The present invention's wafer used accurately can obtain the coordinate information of the point on cardiac lumen profile, and the coordinate information of the point then ultrasonic probe obtained passes to computer, carries out the closed outline that Correlation method for data processing can obtain cardiac lumen.Then mate with the trivector model march line features of preoperative foundation by means of computer matching system, thus obtain position and the rotoflector angle information of conduit.
Ultrasonic probe of the present invention compared with prior art, has following technique effect:
1., in prior art, just utilize ultrasonic probe to obtain the image information of human organ, then judge the position of ablation catheter in heart by doctor further.This mode, often can not provide catheter position information accurately to operator, also need doctor by virtue of experience to judge, precision is not high, and required time is long, this reduces the accuracy and safety that melt location.
Ultrasonic probe of the present invention, obtain cardiac lumen profile information and design, but not for obtaining the ultrasonoscopy that someone carrys out interpretation, thus it is different from the ultrasonic probe for obtaining image, its design focal point is the profile information in order to obtain cardiac lumen, then mates with the cardiac three-dimensional vector model march line features of preoperative foundation, to determine the position of conduit, there is precision high, the feature that the response time is short.
2. adopt the localization by ultrasonic probe be circular layout, its purpose of design is the cardiac lumen profile information that will obtain accurately closing, this will contribute to the accuracy improving curvilinear characteristic coupling, and the Bending Rotation angle of conduit can be judged, contribute to improving the accuracy melted, improve the success rate of ablative surgery.
Accompanying drawing explanation
Fig. 1 is Annular Transducer process chart.Fig. 2 is Annular Transducer structural representation.
Fig. 3 is ablation catheter structural representation.
In figure: 1, Ultrasound Instrument 2, circuit interface 3, ultrasonic transducer 4, ablating electrode.
specific implementation process
Ultrasonic probe for interposing catheter location disclosed in this invention, is mainly used in the location of ablation catheter in cardiac ablation operation.
Good for the polarization piezoelectric patches with electrode and matching layer and back lining materials bond by step (1), and the electrode part that piezoelectric patches upper and lower surface all reserves one fixed width is used for line.Then, be arranged in by coaxial line on soft epoxy grid in order, the spacing of grid is consistent with supersonic array Distance geometry quantity with quantity.By conductive epoxy the heart yearn of coaxial line and piezoelectric patches Electrode connection.Then sample is cut.Finally, piezoelectric patches is centered around on catheter wall, and carries out respective gut, obtain the ultrasonic transducer of annular spread like this.Concrete technology flow chart is see accompanying drawing 1, and Annular Transducer schematic diagram is see accompanying drawing 2.
Ultrasonic transducer 3 and circuit interface 2 that step (1) obtains by step (2), Ultrasound Instrument 1 connects to form ultrasonic probe.See accompanying drawing 3.
Interposing catheter location ultrasonic probe described in step (2) and ablating electrode 4 are integrated in and an ablation catheter can realize catheter positioning and melt two operating by step (3).Structural representation is shown in accompanying drawing 3.
Step (3) is obtained ablation catheter intravascular and enters heart by step (4), actuated wafer in certain sequence, obtains the coordinate information of the point on cardiac lumen and reaches computer and process, obtaining the closed outline of cardiac lumen.
The closed outline of the cardiac lumen that step (4) obtains by step (5) mates with the cardiac three-dimensional vector model march line features of preoperative foundation, obtain the information such as position and rotoflector angle of ablation catheter in heart, and then instruct medical personnel to carry out ablation operation.
By ultrasonic probe of the present invention, the precise positioning of ablation catheter in heart can be realized, improve the accuracy of cardiac ablation, improve the success rate of operation.
Foregoing description only proposes as the enforceable technical scheme of the present invention, does not limit the number of ultrasonic transducer.
Claims (7)
1. a ultrasonic probe, at least comprises: ultrasonic transducer (3), ultrasonic wave generator unit, sends ultrasound wave to object, receives the ultrasonic echo produced by the reflection of ultrasound wave on object, and outputs signal according to the ultrasonic echo received; At least one surface-mounted integrated circuit and be deployed in the interface (2) that probe end is connected with computer; Ultrasound Instrument (1).
2. ultrasonic probe according to claim 1, is characterized in that: described circuit interface (2) must can realize the transmitted in both directions of signal.
3. ultrasonic probe according to claim 1, is characterized in that: wafer annular spread is in catheter proximal end.
4. wafer described in is made up of some array element, described array element is furnished with ultrasonic sensitive unit.
5. ultrasonic probe according to claim 1, is characterized in that: described probe can obtain the closed outline of cardiac lumen.
6. ultrasonic probe according to claim 1, is characterized in that: described probe can be integrated on an ablation catheter together with ablating electrode (4), to complete catheter positioning and to melt two tasks.
7. ultrasonic transducer according to claim 1, is characterized in that: guiding-tube bend position should be avoided in the installation site of ultrasonic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510798051.8A CN105232147A (en) | 2015-11-19 | 2015-11-19 | Ultrasonic probe for catheter positioning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510798051.8A CN105232147A (en) | 2015-11-19 | 2015-11-19 | Ultrasonic probe for catheter positioning |
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| CN105232147A true CN105232147A (en) | 2016-01-13 |
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| CN201510798051.8A Pending CN105232147A (en) | 2015-11-19 | 2015-11-19 | Ultrasonic probe for catheter positioning |
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Cited By (2)
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| CN105852911A (en) * | 2016-05-26 | 2016-08-17 | 苏州佳世达电通有限公司 | Ultrasonic guide tube and medical system |
| CN108042203A (en) * | 2017-12-21 | 2018-05-18 | 清华大学深圳研究生院 | A kind of cardiac three-dimensional Mapping System and method based on supersonic sounding |
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| US6039693A (en) * | 1991-11-08 | 2000-03-21 | Mayo Foundation For Medical Education And Research | Volumetric image ultrasound transducer underfluid catheter system |
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| CN108042203A (en) * | 2017-12-21 | 2018-05-18 | 清华大学深圳研究生院 | A kind of cardiac three-dimensional Mapping System and method based on supersonic sounding |
| CN108042203B (en) * | 2017-12-21 | 2020-07-17 | 清华大学深圳研究生院 | Heart three-dimensional mapping system and method based on ultrasonic ranging |
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