CN217138247U - Ablation device with paste and lean on detection function - Google Patents
Ablation device with paste and lean on detection function Download PDFInfo
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- CN217138247U CN217138247U CN202220425192.0U CN202220425192U CN217138247U CN 217138247 U CN217138247 U CN 217138247U CN 202220425192 U CN202220425192 U CN 202220425192U CN 217138247 U CN217138247 U CN 217138247U
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Abstract
The utility model relates to an it pastes ablation device who detects function to lean on, including the pipe, a plurality of electrodes of setting on the pipe, be connected to provide the impulse generator who melts the energy to the electrode with the electrode electricity, impulse generator includes the energy storage module that discharges that provides voltage to the electrode, connect between energy storage module and electrode and select the electrode to carry out the electrode selection module that the electricity is connected with the energy storage module of discharging, detect the current detection module of electric current on the electrode with the electrode electricity connection, control module and energy storage module connection control whether it discharges, select the module with the electrode and be connected the required electrode that discharges of instruction, be connected receiving electrode electric current and judge that the electrode pastes the condition with the tissue with current detection module. The utility model provides a device that convenient realization pipe targetting in place at operation in-process acquires every electrode and melts leaning on the degree of organizing, and help doctor targets in place fast to select different electrodes to melt, shorten the operation time, improve the cure rate.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to have and paste and lean on melting device who detects function.
Background
Atrial fibrillation is a disease of the heart in which the left or right atrium of the heart abnormally beats. If atrial fibrillation is left untreated, it can lead to a number of adverse consequences, including palpitations, shortness of breath, weakness, and general poor blood flow to the body. Ablation catheters are relatively common methods used to treat atrial fibrillation, including radio frequency ablation, cryoablation, and pulse ablation. Because the pulse ablation is a non-heat-generating technology, the damage mechanism is that nanometer micropores appear on certain cell membranes through high-frequency electric pulses, and the pulse ablation technology has the advantages that: has tissue selectivity, and can protect surrounding tissues from being damaged; the pulse can be released quickly within a few seconds; there is no coagulative necrosis and the risk of stenosis of the Pulmonary Veins (PV) is reduced. Thus, the use of pulse ablation techniques is increasing.
In a general operation process, since the shape and contour of the tissue to be ablated are usually different, it is difficult for a surgeon to place a catheter along the correct tissue contour, so that the electrode and the tissue cannot be completely matched and contacted, and the adhesion degree of the electrode and the target position greatly influences the ablation effect, thereby influencing the operation treatment effect.
At present, surgeons mainly judge the catheter attachment degree through two-dimensional images and own clinical experience, and the two-dimensional images are not visual, so that the method needs abundant experience of the surgeons. In addition, the degree of contact is also determined by electrophysiological signals acquired by catheter electrodes, but this method is not yet mature.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Disclosure of Invention
The utility model aims at providing an ablation device with paste and lean on detection function for make the pipe reach appointed, suitable position conveniently in the operation process.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an ablation device with an application detection function, comprising:
a conduit: the distal end of the catheter forms an ablation segment adapted for insertion through a body passageway into a body cavity of a patient,
an electrode: the electrode is provided with a plurality of electrodes which are arranged on the ablation section of the catheter,
a pulse generator: the pulse generator is electrically connected to the electrode for providing ablation energy to the electrode,
the pulse generator comprises an energy storage and discharge module, an electrode selection module, a current detection module and a control module,
the energy storage discharge module is used for providing a set discharge voltage for the electrode,
the electrode selection module is connected between the energy storage discharge module and the electrodes, and is used for electrically connecting the electrodes which select to discharge in the electrodes with the energy storage discharge module,
the current detection module is electrically connected with the electrode and is used for detecting discharge current on the electrode;
the control module is connected with the energy storage discharging module and is used for controlling whether the energy storage discharging module discharges or not; the control module is connected with the electrode selection module and is used for indicating electrodes needing to be discharged; the control module is connected with the current detection module and used for receiving the discharge current of the electrode and judging the attaching condition of the electrode and the tissue through current parameters.
Preferably, the energy storage discharge module comprises a discharge module electrically connected with the electrode through the electrode selection module.
Further preferably, the energy storage discharging module further comprises a charging module and a capacitor, the charging module is electrically connected with the capacitor, and the capacitor is electrically connected with the discharging module.
Preferably, the current detection module includes a current sensing component and an analog-to-digital converter, the current sensing component is electrically connected with the electrode and is used for receiving the discharge current of the electrode and converting the discharge current into an analog signal, the analog-to-digital converter is electrically connected with the current sensing component and is used for converting the analog signal of the current sensing component into a digital signal, and the analog-to-digital converter is connected with the control module and transmits the digital signal to the control module.
Further preferably, the current detection module further comprises an amplifier and a filter, the current sensing component is electrically connected with the amplifier, the amplifier is electrically connected with the filter, and the filter is electrically connected with the analog-to-digital converter.
Further preferably, the current sensing component adopts at least one of a sampling resistor and a current transformer.
Preferably, the control module adopts at least one of ARM, DSP and FPGA.
Preferably, the electrode selection module employs a relay.
Preferably, the pulse generator further comprises a display input module, and the display input module is connected with the control module and is used for displaying the judgment result of the control module attaching condition.
Further preferably, the display input module includes a display screen and a touch panel.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model provides a convenient ablation device that realizes pipe and target in place at operation in-process, this device can acquire every electrode and melt the degree of pasting of organizing, help the surgeon target in place fast to paste through the judgement and paste the degree and select different electrodes to melt, shorten the operation time, improve the cure rate.
Drawings
FIG. 1 is a schematic structural diagram of the ablation apparatus in this embodiment;
FIG. 2 is a block diagram schematically illustrating the structure of the pulse generator in this embodiment;
FIG. 3 is a flowchart illustrating the operation of the current detection module according to the present embodiment;
fig. 4 is a flowchart illustrating the operation of the electrode alignment detection in the present embodiment.
In the above drawings: 1. a conduit; 2. an electrode; 3. a pulse generator.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, the ablation device with the function of detecting the adhesion comprises a catheter 1, an electrode 2 and a pulse generator 3, and is used for extending into a human body to ablate tissues, and the device can detect the adhesion degree of the ablation device with the tissues in the human body. The distal end of the catheter 1 forms an ablation section adapted to be inserted into a body cavity of a patient through a body passage, the electrodes 2 are provided in plurality, a plurality of electrodes 2 are provided on the ablation section of the catheter 1, a pulse generator 3 is connected to the catheter 1, and the pulse generator 3 is electrically connected to the electrodes 2 for supplying ablation energy to the electrodes 2. The pulse generator 3 generates positive and negative pulse discharges with specific voltage and pulse width, and the positive and negative pulse discharges act on the position needing to be ablated through the electrode 2 or the combination of the electrodes 2.
As shown in fig. 2, the pulse generator 3 includes an energy storage and discharge module, an electrode selection module, a current detection module, a control module, and a display input module.
The energy storage discharging module is used for providing set discharging voltage for the electrode 2, and comprises a charging module, a capacitor and a discharging module. The charging module is electrically connected with the capacitor and charges the capacitor according to the set discharging voltage. The capacitor is electrically connected with the discharging module, the discharging module is electrically connected with the electrode 2 through the electrode selecting module, and after receiving a discharging starting instruction, the discharging module carries out discharging operation on electricity in the capacitor to the electrode 2 according to parameters such as set pulse width, set pulse interval and the like.
The electrode selection module is used for selecting the electrode 2 needing to be discharged from the electrodes 2 and electrically connecting the electrode 2 with the energy storage discharge module, the electrode selection module adopts a relay, one end of the relay is connected with the discharge module, the other end of the relay is connected with an output interface of the pulse generator 3, and the electrode 2 is electrically connected with the pulse generator 3 through the output interface of the pulse generator 3.
As shown in fig. 3, the current detection module is used for detecting a discharge current on each electrode 2 when the ablation device discharges, the electrodes 2 are electrically connected with the current detection module, and the current detection module includes a current sensing component, an amplifier, a filter, and an analog-to-digital converter. The electrodes 2 are electrically connected with a current sensing component, the current sensing component is used for receiving the discharge current of the electrodes 2 and converting the discharge current into an analog signal, the current sensing component can adopt at least one of a sampling resistor with a specific resistance value and a current transformer, and specifically, during discharging, the discharge current of each electrode 2 is converted into a voltage analog signal through a current sensor. The current sensing component is electrically connected with the amplifier, the voltage analog signal converted by the current sensor is amplified to proper voltage through the amplifying circuit of the amplifier, and the amplifying circuit can set different amplification times through the controller for amplifying signals with different sizes. The amplifier is electrically connected to a filter for filtering high frequency noise, leaving a useful signal. The filter is electrically connected with the analog-to-digital converter, the analog-to-digital converter is used for converting the analog signal into a digital signal, and the filtered useful signal is converted into the digital signal by the analog-to-digital converter and is transmitted to the control module. Normally, when the discharge current of the electrode 2 is detected to be below 80mA, it indicates that the electrode 2 is attached.
As shown in fig. 2, the control module is connected to the charging module of the energy storage discharging module, and is configured to control whether the charging module is charged or not. The control module is connected with the discharging module of the energy storage discharging module and is used for controlling whether the energy storage discharging module discharges or not. The control module is connected with the electrode selection module and is used for indicating the electrode 2 needing to be discharged in the plurality of electrodes 2. The control module is connected with the current detection module and used for receiving the discharge current of the electrode 2, when the electrode 2 is different from the tissue in the sticking degree, the resistance value is changed correspondingly, so that the relevant parameters of the discharge current are changed, the control module judges the sticking condition of the electrode 2 and the tissue through the change of the current parameters, and particularly, the control module is connected with the analog-to-digital converter to receive the digital signals converted by the analog-to-digital converter. The control module can obtain the relevant parameters of the discharge current according to the amplification factor set by the amplifier and the conversion ratio of the current sensing component. The control module adopts one or more of ARM, DSP and FPGA, and is used for programming and controlling other modules and receiving and processing information acquired by the other modules.
The display input module is connected with the control module and comprises a display screen, a touch panel and the like. The display input module is used for inputting and displaying discharge parameters of the pulse generator 3, can be used for selecting different electrode 2 combinations and displaying the selected condition of each electrode 2 in real time, and can also display the judgment result of the contact condition of each electrode 2 or different electrode 2 combinations and tissues by the control module in real time after the catheter 1 is connected with the pulse generator 3.
The first embodiment is as follows:
the method is suitable for use before formal attachment detection. The doctor firstly confirms that the electrodes are not attached through the two-dimensional image. The pulse generator generates low-voltage safety pulse pre-discharge with specific amplitude of 10V and pulse width of 10us, the control module controls the electrode selection module to pre-discharge each electrode 2, and the current detection module detects discharge current of each electrode 2. The pulse generator records the current parameter at the moment as a reference current, and the display module displays that the reference current is recorded. The physician then proceeds to the next catheter-in-place procedure. The control module controls the electrode selection module to continue to pre-discharge each electrode 2, and the current detection module detects the discharge current of each electrode 2. Because the different resistance values of the electrode sticking degrees are different, the detected current changes with the different sticking degrees under the fixed discharge voltage of 10V, when the control module receives that the current parameter of a certain electrode 2 is lower than the reference current of 20mA, the display input module displays that the electrode 2 is stuck, and the sticking detection process is shown in fig. 4. The surgeon can begin effective ablation treatment of specific tissues by displaying the electrode 2 of the control module to be attached and prompting and combining the two-dimensional image.
Example two:
is suitable for use before formal pulse ablation. The pulse generator generates low-voltage safety pulse pre-discharge with variable amplitude of 5-20V and pulse width of 10us as required, the control module controls the electrode selection module to pre-discharge each electrode 2, and the current detection module detects the discharge current of each electrode 2. Because the resistance values are different according to the contact degree, the detected current changes along with the contact degree under the fixed discharge voltage of 10V. When the control module receives that the current parameter of a certain electrode 2 reaches a preset threshold (the facility-set threshold is lower than 80 mA), namely the display input module displays that the electrode 2 is attached, the attachment detection process is as shown in fig. 4, and the attachment is confirmed to be repeatedly detected in real time due to the fact that the position of the catheter 2 is changed before discharging, so as to assist the positioning of the catheter 2. The doctor leans on the suggestion through the electrode 2 that shows control module, combines two-dimensional image, can be accurate carry out effectual ablation treatment to specific tissue.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. An ablation device with an application detection function, comprising:
a conduit: the distal end of the catheter forms an ablation segment adapted for insertion through a body passageway into a body cavity of a patient,
an electrode: the electrode is provided with a plurality of electrodes which are arranged on the ablation section of the catheter,
a pulse generator: the pulse generator is electrically connected to the electrode for providing ablation energy to the electrode,
the method is characterized in that: the pulse generator comprises an energy storage and discharge module, an electrode selection module, a current detection module and a control module,
the energy storage discharge module is used for providing a set discharge voltage for the electrode,
the electrode selection module is connected between the energy storage discharge module and the electrodes, and is used for electrically connecting the electrodes which select to discharge in the electrodes with the energy storage discharge module,
the current detection module is electrically connected with the electrode and is used for detecting discharge current on the electrode;
the control module is connected with the energy storage discharging module and is used for controlling whether the energy storage discharging module discharges or not; the control module is connected with the electrode selection module and is used for indicating electrodes needing to be discharged; the control module is connected with the current detection module and used for receiving the discharge current of the electrode and judging the attaching condition of the electrode and the tissue through current parameters.
2. The ablation device with an alignment detection function according to claim 1, wherein: the energy storage discharge module comprises a discharge module, and the discharge module is electrically connected with the electrode through the electrode selection module.
3. The ablation device with an alignment detection function as claimed in claim 2, wherein: the energy storage discharging module further comprises a charging module and a capacitor, the charging module is electrically connected with the capacitor, and the capacitor is electrically connected with the discharging module.
4. The ablation device with an alignment detection function according to claim 1, wherein: the current detection module comprises a current sensing component and an analog-to-digital converter, the current sensing component is electrically connected with the electrode and used for receiving the discharge current of the electrode and converting the discharge current into an analog signal, the analog-to-digital converter is electrically connected with the current sensing component and used for converting the analog signal of the current sensing component into a digital signal, and the analog-to-digital converter is connected with the control module and transmits the digital signal to the control module.
5. The ablation device with an alignment detection function as claimed in claim 4, wherein: the current detection module further comprises an amplifier and a filter, the current sensing component is electrically connected with the amplifier, the amplifier is electrically connected with the filter, and the filter is electrically connected with the analog-to-digital converter.
6. The ablation device with alignment detection function of claim 4, wherein: the current induction component adopts at least one of a sampling resistor and a current transformer.
7. The ablation device with an alignment detection function according to claim 1, wherein: the control module adopts at least one of ARM, DSP and FPGA.
8. The ablation device with an alignment detection function as claimed in claim 1, wherein: the electrode selection module adopts a relay.
9. The ablation device with an alignment detection function according to claim 1, wherein: the pulse generator further comprises a display input module, and the display input module is connected with the control module and used for displaying the judgment result of the control module attaching condition.
10. The ablation device with alignment detection function of claim 9, wherein: the display input module comprises a display screen and a touch panel.
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