CN104825234A - Detecting method and device for attaching of multi-electrode ablation catheter to heart tissue - Google Patents
Detecting method and device for attaching of multi-electrode ablation catheter to heart tissue Download PDFInfo
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- CN104825234A CN104825234A CN201510249038.7A CN201510249038A CN104825234A CN 104825234 A CN104825234 A CN 104825234A CN 201510249038 A CN201510249038 A CN 201510249038A CN 104825234 A CN104825234 A CN 104825234A
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- ablation catheter
- electrode
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- heart tissue
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Abstract
The invention provides a detecting method and device for attaching of multi-electrode ablation catheter to heart tissue. The device comprises a multi-electrode ablation catheter provided with a plurality of sensors, a computing unit, an energy control unit, a collecting circuit and an amplification circuit. The method comprises the steps that when the multi-electrode ablation catheter is attached to the heart tissue, the collecting circuit, the amplification circuit and the computing unit are used for carrying out collecting, amplification, operation conversion and other processing on attaching degree signals generated by the sensors respectively, more visual and more accurate ablation catheter and heart tissue attaching degree information is provided for a user, and the accuracy and efficiency of judging the attaching degree of the ablation catheter and the heart tissue are improved.
Description
Technical field
The present invention relates to detection method and device that a kind of multi-electrode ablation catheter heart tissue reclines, particularly a kind of detection method of reclining with the multi-electrode ablation catheter heart tissue of several induction apparatuss that recline and device.
Background technology
At present, judge that the existing method of the reliability that electrode catheter and heart tissue recline has three kinds: the first is judged the recline feel of degree of conduit by user, the method places one's entire reliance upon experience, and no quantization standard, be not easy to be widely used in practice; It two is judge by perspective bidimensional image the reliability that reclines, and the method needs user to possess abundant practical experience, and image judges directly perceived, can affect to the judgement used; It three is reliabilities that the electricity physiological signal gathered by conduit judges to recline, judgement according to the size of signal amplitude value being electrode-feedback, there is individual variation in the method, can not be applicable to common situation;
Therefore, need a kind of degree that reclines that can present electrode catheter and heart tissue intuitively, weigh again technical method and the device of the degree that reclines of electrode catheter and heart tissue by quantifiable standard.
Summary of the invention
The present invention is directed to the deficiency that this area exists, the detection method providing a kind of multi-electrode ablation catheter heart tissue to recline and device, when multi-electrode ablation catheter and heart tissue are reclined, on multi-electrode ablation catheter, some sensors produce the signal relevant to the degree of reclining, by this checkout gear to the collection of this signal, the process such as computing conversion and display, improve the accuracy of the deciding degree that reclines of ablation catheter and heart tissue and judge efficiency, for user provides more intuitively the information of the degree that reclines of conduit and heart tissue more accurately.
The detection method that multi-electrode ablation catheter heart tissue provided by the invention reclines comprises the following steps,
The multi-electrode ablation catheter and heart tissue that are provided with some sensors are reclined, described sensor produces the signal relevant with the degree of reclining according to described multi-electrode ablation catheter to the degree that reclines of heart tissue;
Gather by Acquisition Circuit the signal that described sensor produces, and described Signal transmissions to be amplified to amplifying circuit, described amplifying circuit by the Signal transmissions after its processing and amplifying to computing unit;
Described signal is converted to the supplemental characteristic relevant to the degree of reclining by described computing unit, and described supplemental characteristic is transferred to power control unit;
Described power control unit receives and according to described supplemental characteristic, makes power control unit regulate and control the output energy of electrode described in each independently of each other.
According to one preferred embodiment, described Acquisition Circuit gathers the signal of described sensor generation respectively by certain frequency by its multi pass acquisition passage, and amplified by the signal of described amplifying circuit to multi pass acquisition channel acquisition.
According to one preferred embodiment, by computing unit, the step that described signal is converted to the supplemental characteristic relevant to the degree of reclining is comprised,
By described computing unit, filtering is carried out to reduce the noise of described signal to described signal;
By described computing unit according to the mapping relations between the parameter characteristic of described sensor and the signal relevant to the degree of reclining, described signal is converted to the supplemental characteristic relevant to the degree of reclining.
According to one preferred embodiment, described power control unit receives and according to described supplemental characteristic, the step making power control unit regulate and control the output energy of electrode described in each independently of each other comprises,
Described power control unit receives described relevant to the degree of reclining supplemental characteristic, carries out logical operations by the processor of described power control unit to it, and exports the energy steering circuit controlling signal to the empty control unit of described energy accordingly;
Described energy steering circuit receives and according to described control signal, regulates and controls the output energy of electrode described in each independently of each other.
According to one preferred embodiment, the step of the detection method that multi-electrode ablation catheter heart tissue provided by the invention reclines also comprises,
Receive described relevant to the degree of reclining supplemental characteristic by computer, and described supplemental characteristic is converted to video output data, show in order to export the display be connected with described computer to.
The checkout gear that multi-electrode ablation catheter heart tissue provided by the invention reclines, it comprises the multi-electrode ablation catheter, computing unit, power control unit, Acquisition Circuit and the amplifying circuit that are provided with some sensors;
Wherein, the multi pass acquisition passage of some described sensors and described Acquisition Circuit connects one to one, described computing unit is connected with Acquisition Circuit by described amplifier, and the signal in order to described Acquisition Circuit to be gathered amplifies and is converted to the supplemental characteristic relevant to the degree of reclining;
Described computing unit is connected with described power control unit, in order to described supplemental characteristic is transferred to power control unit; Described power control unit connects one to one with the electrode on described multi-electrode ablation catheter respectively, in order to according to described supplemental characteristic, regulates and controls the output energy of each described electrode independently of each other.
According to one preferred embodiment, the some described sensor on described multi-electrode ablation catheter and the multiple electrodes on described multi-electrode ablation catheter are arranged on respectively in one to one or many-to-one corresponding relation; Wherein, described sensor can by certain geometry or regular array.
According to one preferred embodiment, described power control unit comprises processor and energy steering circuit, described processor is connected with described energy steering circuit, and described energy steering circuit is connected one to one with each electrode on described multi-electrode ablation catheter respectively; Wherein, described processor receives described supplemental characteristic and output multi-channel controls signal to described energy steering circuit, with the output energy making described energy steering circuit regulate and control each described electrode independently of each other.
According to one preferred embodiment, the display that the checkout gear that multi-electrode ablation catheter heart tissue provided by the invention reclines also comprises computer and is connected with described computer.
The technology of the present invention effect is:
1, according to the mapping relations multi-electrode ablation catheter upper sensor parameter characteristic relevant to the degree of reclining and sensor producing signal, realize ablation catheter and heart tissue to recline the quantification of degree, and by the high sensitivity of sensor, improve the measuring accuracy of degree that ablation catheter and heart tissue reclined.
2, by a series of calculation process of computing unit of the present invention and computer, the supplemental characteristic relevant to the degree of reclining is shown over the display visually, follow ablation catheter and heart tissue in real time to recline the change of degree, user can obtain ablation catheter and heart tissue easily and intuitively and to recline degree.
3, the present invention is by the cooperation of computing unit and power control unit, can according to the degree that reclines of sensor and heart tissue, regulation and control are independently of each other arranged on the output energy of each electrode on ablation catheter, thus ensure the accuracy of multi-electrode ablation catheter work, promote work efficiency and the effect of multi-electrode ablation catheter.
Accompanying drawing explanation
Fig. 1 is the detection method flow chart that in the present invention, multi-electrode ablation catheter heart tissue reclines;
Fig. 2 is the structure of the detecting device figure that in the present invention, multi-electrode ablation catheter heart tissue reclines.
Reference numerals list
20: multi-electrode ablation catheter 21: Acquisition Circuit 22: amplifying circuit
23: computing unit 24: power control unit 25: processor
26: energy steering circuit 27: computer
Detailed description of the invention
Be described in detail below in conjunction with accompanying drawing.
Fig. 1 is the detection method flow chart that in the present invention, multi-electrode ablation catheter heart tissue reclines, step 10, reclined mutually with heart tissue by the multi-electrode ablation catheter 20 being provided with some sensors, these sensors correspondingly can produce the signal relevant with the degree of reclining according to multi-electrode ablation catheter 20 to the degree that reclines of heart tissue on each sensor.The diverse location of these sensor settings on multi-electrode ablation catheter 20, to recline the information of degree in order to obtain more fully multi-electrode ablation catheter 20 and heart tissue.Sensor of the present invention can be resistive pressure sensor, and due to the different degree that reclines, the force value that sensor bears is not identical, thus makes the resistance value of sensor follow the change of the degree of reclining and change.
Step 11, the signal produced by Acquisition Circuit 21 pick-up transducers, wherein, Acquisition Circuit 21 has multi pass acquisition passage, each road acquisition channel is each sensor corresponding respectively, thus the signal of each sensor is gathered, and Acquisition Circuit 21 by the Signal transmissions of multi pass acquisition channel acquisition to amplifying circuit 22.
Step 12, the signal that amplifying circuit 22 pairs of Acquisition Circuit 21 gather carries out processing and amplifying, wherein, voltage amplification or the power amplification of identical multiple is carried out by the signal of amplifying circuit 22 pairs of multi pass acquisition channel acquisition, to improve the capacity of resisting disturbance of signal, and by the Signal transmissions after processing and amplifying to computing unit 23.
Step 13, is converted to the supplemental characteristic relevant to the degree of reclining by computing unit 23 by the signal after processing and amplifying, and wherein, first computing unit 23 carries out bandpass filtering to the signal after processing and amplifying, to reduce the noise of signal, improves degree of accuracy; Then, the signal after Filtering Processing, according to the mapping relations be stored between the parameter characteristic of sensor of computing unit 23 inside and the signal relevant to the degree of reclining, is converted to the supplemental characteristic relevant to the degree of reclining by computing unit 23.
Concrete, mapping relations between the parameter characteristic of sensor and the signal relevant to the degree of reclining are: the signal when signal after Filtering Processing and sensor zero are calibrated carries out intensity contrast, and floating-point operation is carried out to the recruitment of intensity, using the result after computing as the element set of in mapping relations, simultaneously that sensor is corresponding with unlike signal intensity recruitment parameter value is as another element set of mapping relations; According to the mapping relations of two element sets, thus signal is transferred to parameter value corresponding to each sensor.Combining parameter values corresponding for each sensor is formed the supplemental characteristic relevant to the degree of reclining together; Namely be equivalent to, supplemental characteristic comprises the information of parameter value and each sensor corresponding relation.
Step 14, by power control unit 24 receiving parameter data, the 25 pairs of supplemental characteristics of the processor in power control unit 24 are translated, and correspondingly generate multiple control signal according to the data of translation; Energy steering circuit 26 in power control unit 24 receives and regulates and controls the output energy of each electrode according to multiple control signal independently of each other.
Concrete, because supplemental characteristic comprises the information of parameter value and each sensor corresponding relation, therefore when processor 25 pairs of supplemental characteristics are translated, can according to the parameter value of each sensor, generate and each sensor control signal one to one, the electrode of each control signal correspondence regulation and control simultaneously also has identical corresponding relation with sensor, the position that can recline according to multi-electrode ablation catheter and heart tissue exactly like this and degree different, regulate and control the output energy of each electrode independently of each other, reduce the difference of the position that reclines and degree and impact that multi-electrode ablation catheter working effect is caused.
Step 15, by computer 27 receiving parameter data, and pass through the calculation process of its built-in system, supplemental characteristic is converted to video output data, read this video output data by the graphics software of computer-internal again, and show on the display be connected with computer.
Signal in the detection method that multi-electrode ablation catheter heart tissue in the present invention reclines can be the signal of telecommunication, optical signal or magnetic signal according to the type of sensor detection variable.
Fig. 2 is the checkout gear that multi-electrode ablation catheter heart tissue of the present invention reclines, and comprises the multi-electrode ablation catheter 20, computing unit 23, power control unit 24, Acquisition Circuit 21 and the amplifying circuit 22 that are provided with some sensors.
Wherein, the multi pass acquisition passage of some sensors and Acquisition Circuit 21 connects one to one, computing unit 23 is connected with amplifying circuit 22, amplifying circuit 22 is connected with Acquisition Circuit 21, the signal of amplifying circuit 22 pairs of multi pass acquisition channel acquisition amplifies, to reduce the error of signal and to improve its jamproof ability; Amplifying signal is converted to the supplemental characteristic relevant to the degree of reclining by computing unit 23, and the degree that will recline quantizes; Be connected with power control unit 24 by computing unit 23, supplemental characteristic transferred to power control unit 24; Power control unit 24 connects one to one with the electrode on multi-electrode ablation catheter respectively, and after power control unit 24 receiving parameter data, power control unit 24 regulates and controls the output energy of each electrode independently of each other according to supplemental characteristic.
Concrete, be arranged on the some sensors on multi-electrode ablation catheter 20 and the multiple electrodes on multi-electrode ablation catheter 20 respectively in one to one or many-to-one corresponding relation, and power control unit 24 can according to the supplemental characteristic of the corresponding generation of the sensor in corresponding relation, the output energy of the electrode in regulation and control corresponding relation.And in this corresponding relation, sensor can by certain geometry or regular array, to optimize the measurement of sensor to the degree of reclining.
Concrete, power control unit 24 comprises processor 25 and energy steering circuit 26, and processor 25 is connected with energy steering circuit 26, and multiple control signals that processor 25 is exported act on energy steering circuit 26; Energy steering circuit 26 is connected one to one with each electrode on multi-electrode ablation catheter 20 respectively; Wherein, processor 25 receiving parameter data, and be translated into the data that processor 25 can be made to generate control signal; Processor 25 is generated multiple control signal and transfers to energy steering circuit 26, energy steering circuit 26 regulates and controls the output energy of each electrode independently of each other according to multiple control signal.
The checkout gear that multi-electrode ablation catheter heart tissue in the present invention reclines, its display also comprising computer 27 and be connected with computer 27, wherein, computer is connected with computing unit 23, supplemental characteristic in computing unit 23 is transferred to computer, read this video output data by the graphics software of computer-internal again, and show on the display be connected with computer.
In the checkout gear that multi-electrode ablation catheter heart tissue in the present invention reclines, sensor can be pressure sensitive resistive element and its component accuracy is not less than 0.01 Ω/g, also can select the pressure transducer such as capacitance-type pressure transducer etc. of other type; The sample frequency of Acquisition Circuit 21 is at least 1000Hz; The amplification of amplifying circuit 22 is at least 1000 times; The control signal that processor 25 generates is pwm signal; By regulating and controlling amplitude and the dutycycle of pwm signal, controlling output and the output time of respective electrode, being namely equivalent to regulation and control and exporting energy.
The invention provides detection method and device that a kind of multi-electrode ablation catheter heart tissue reclines, improve the accuracy of the deciding degree that reclines of ablation catheter and heart tissue and judge efficiency, for user provides the information of the degree that reclines of conduit and heart tissue more accurately more directly perceived, and reduce the different of ablation catheter and the position that heart tissue reclines and degree and multi-electrode ablation catheter working effect is caused impact.
It should be noted that; above-mentioned specific embodiment is exemplary; those skilled in the art can find out various solution under the inspiration of the disclosure of invention, and these solutions also all belong to open scope of the present invention and fall within protection scope of the present invention.It will be understood by those skilled in the art that description of the present invention and accompanying drawing thereof are illustrative and not form limitations on claims.Protection scope of the present invention is by claim and equivalents thereof.
Claims (9)
1. the detection method that reclines of multi-electrode ablation catheter heart tissue, is characterized in that, said method comprising the steps of,
The multi-electrode ablation catheter (20) being provided with some sensors and heart tissue are reclined, described sensor produces the signal relevant with the degree of reclining according to described multi-electrode ablation catheter (20) and the degree that reclines of heart tissue;
Gather by Acquisition Circuit (21) signal that described sensor produces, and described Signal transmissions to be amplified to amplifying circuit (22), described amplifying circuit (22) by the Signal transmissions after its processing and amplifying to computing unit (23);
Described signal is converted to the supplemental characteristic relevant to the degree of reclining by described computing unit (23), and described supplemental characteristic is transferred to power control unit (24);
Described power control unit (24) receives and according to described supplemental characteristic, makes power control unit (24) regulate and control the output energy of electrode described in each independently of each other.
2. the detection method that reclines of multi-electrode ablation catheter heart tissue according to claim 1, it is characterized in that, described Acquisition Circuit (21) gathers the signal of described sensor generation respectively by certain frequency by its multi pass acquisition passage, and amplified by described amplifying circuit (22) signal to multi pass acquisition channel acquisition.
3. the detection method that reclines of multi-electrode ablation catheter heart tissue according to claim 1, is characterized in that, the step that described signal is converted to the supplemental characteristic relevant to the degree of reclining comprised by computing unit,
By described computing unit (23), filtering is carried out to reduce the noise of described signal to described signal;
By described computing unit (23) according to the mapping relations between the parameter characteristic of described sensor and the signal relevant to the degree of reclining, described signal is converted to the supplemental characteristic relevant to the degree of reclining.
4. the detection method that reclines of multi-electrode ablation catheter heart tissue according to claim 1, it is characterized in that, described power control unit receives and according to described supplemental characteristic, the step making power control unit regulate and control the output energy of electrode described in each independently of each other comprises
Described power control unit (24) receives described relevant to the degree of reclining supplemental characteristic, by the processor (25) of described power control unit (24), logical operations is carried out to it, and export the energy steering circuit (26) controlling signal to described power control unit accordingly;
Described energy steering circuit (26) receives and according to described control signal, regulates and controls the output energy of electrode described in each independently of each other.
5., according to the detection method that the multi-electrode ablation catheter heart tissue one of claim 1 ~ 4 Suo Shu reclines, it is characterized in that, the step of described method also comprises,
Receive described relevant to the degree of reclining supplemental characteristic by computer (27), and described supplemental characteristic is converted to video output data, show in order to export the display be connected with described computer to.
6. the checkout gear that reclines of a multi-electrode ablation catheter heart tissue, it is characterized in that, described device comprises the multi-electrode ablation catheter (20), computing unit (23), power control unit (24), Acquisition Circuit (21) and the amplifying circuit (22) that are provided with some sensors;
Wherein, the multi pass acquisition passage of some described sensors and described Acquisition Circuit (21) connects one to one, described computing unit (23) is connected with Acquisition Circuit (21) by described amplifier (22), and the signal in order to described Acquisition Circuit (21) to be gathered amplifies and is converted to the supplemental characteristic relevant to the degree of reclining;
Described computing unit (23) is connected with described power control unit (24), in order to described supplemental characteristic is transferred to described power control unit (24); Described power control unit (24) connects one to one with the electrode on described multi-electrode ablation catheter (20) respectively, in order to according to described supplemental characteristic, regulates and controls the output energy of each described electrode independently of each other.
7. the checkout gear that reclines of multi-electrode ablation catheter heart tissue according to claim 6, it is characterized in that, be arranged on the some described sensor on described multi-electrode ablation catheter (20) and the multiple electrodes on described multi-electrode ablation catheter (20) respectively in one to one or many-to-one corresponding relation; Wherein, described sensor can by certain geometry or regular array.
8. the checkout gear that reclines of multi-electrode ablation catheter heart tissue according to claim 6, it is characterized in that, described power control unit (24) comprises processor (25) and energy steering circuit (26), described processor (25) is connected with described energy steering circuit (26), and described energy steering circuit (26) is connected one to one with each electrode on described multi-electrode ablation catheter (20) respectively; Wherein, described processor (25) receives described supplemental characteristic and output multi-channel controls signal to described energy steering circuit (26), with the output energy making described energy steering circuit (26) regulate and control each described electrode independently of each other.
9. according to the checkout gear that the multi-electrode ablation catheter heart tissue one of claim 6 ~ 8 Suo Shu reclines, it is characterized in that, the display also comprising computer (27) and be connected with described computer (27).
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