CN108652734A - Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment - Google Patents
Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment Download PDFInfo
- Publication number
- CN108652734A CN108652734A CN201710190202.0A CN201710190202A CN108652734A CN 108652734 A CN108652734 A CN 108652734A CN 201710190202 A CN201710190202 A CN 201710190202A CN 108652734 A CN108652734 A CN 108652734A
- Authority
- CN
- China
- Prior art keywords
- power
- radio frequency
- voltage
- frequency
- generating unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 12
- 238000011297 radiofrequency ablation treatment Methods 0.000 title claims abstract description 7
- 238000007674 radiofrequency ablation Methods 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims description 30
- 238000002679 ablation Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000007831 electrophysiology Effects 0.000 abstract description 16
- 238000002001 electrophysiology Methods 0.000 abstract description 16
- 230000000747 cardiac effect Effects 0.000 abstract description 11
- 238000011282 treatment Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 210000005003 heart tissue Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- 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
-
- 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
Abstract
The invention discloses a kind of radio frequencies for heart radio frequency ablation treatment, and therapeutic device occurs, which includes shell, and power module, RF generating unit and electrophysiological recording unit are equipped in shell；Power module is used to provide electric energy for RF generating unit and electrophysiological recording unit；RF generating unit includes power control module, low-voltage adjustable DC power supply, power inverter, high-frequency power transformer, back electrode and radio frequency ablation catheter；Each component of other of power control module and RF generating unit is all connected with；Low-voltage adjustable DC power supply is used to carry out the constant pressure output of voltage variable；Power inverter is used to the DC voltage of input being converted into corresponding high-frequency ac power signal；High-frequency power transformer couples a signal on radio frequency ablation catheter and back electrode.The present invention can reduce the size and volume of cardiac electrophysiology diagnoses and treatment system, and simplify the interconnecting relation between all parts, and more stable, failure rate is lower.
Description
Technical field
The present invention relates to cardiac electrophysiology therapy field, relate more specifically to being used for what heart radio frequency ablation was treated with a kind of
Therapeutic device occurs for radio frequency.
Background technology
The main stream approach of the interventional treatment of heart is that the excitement letter of part is obtained from heart surface by means of interposing catheter
Number, patient leads to instrument and equipment excessively to the analysis of signal, after judging the cause of disease, then by interposing catheter, RF energy is delivered to
In heart tissue.
The equipment generally used in interventional cardiac procedures at present is that multi-channel electrophysiology recorder instrument system and heart radio frequency disappear
Melt instrument, the former detects and diagnoses to heart lesion in interposing catheter, the latter as independent radio frequency ablation device by means of
Interposing catheter to target area discharge high-frequency electrical energy, so that destination organization is heated up, protein denaturation and lose activity, controlled to reach
Treat purpose.
In current published product and technical solution, both equipment belong to two kinds of stand-alone products, and two systems pass through
External interconnections conducting wire is attached, and carries out coordinated manipulation by operator, and this mode brings many drawbacks：Between equipment mutually
Connection is by a series of External cable, and wiring is complicated, and connection is easy to be interfered and damage, and influences procedure.
The principle of traditional RF energy generation technique is generally used A/B class A amplifier As, inefficiency, fever simultaneously
Seriously, often volume is big for radio frequency ablation device, quality weight, it is caused to occupy limited operating room space, and independent ablation in addition is set
Standby and relevant connection cable needs regular maintenance, transhipment carrying cost high.
In addition, two kinds of equipment are often manufactured by different manufacturers, general incompatible between two systems, information can not be whole
It closes, to which the visual angle of operative doctor needs to switch between electrophysiological recording instrument and radio frequency ablation system, it is tired to easily cause patient
Labor.
Therefore, this field still lacks a kind of radio frequency system at present, enables to reduce cardiac electrophysiology diagnoses and treatment system
Overall dimensions and volume, and simplify interventional cardiac procedures each interconnections set between portion, work is more stablized, possess it is lower therefore
Barrier rate.
Invention content
The purpose of the present invention is to provide a kind of radio frequencies for heart radio frequency ablation treatment, and therapeutic device, the radio frequency occurs
Generating means can reduce the overall dimensions and volume of cardiac electrophysiology diagnoses and treatment system, and it is each to simplify interventional cardiac procedures
If the interconnection between portion, work is more stablized, and more less trouble is possessed.
The present invention provides a kind of radio frequencies for heart radio frequency ablation treatment, and therapeutic device, specifically, the device occurs
Including a shell, and power module, RF generating unit and electrophysiological recording unit are equipped in shell；Power module is used to penetrate
Frequency generating unit and electrophysiological recording unit provide electric energy；RF generating unit includes power control module, low-voltage adjustable DC
Power supply, power inverter, high-frequency power transformer, back electrode and radio frequency ablation catheter；Power control module occurs with radio frequency
Other each components of unit are all connected with, power control module be used for collect power inverter and sensor circuit feedback voltage,
Electric current, power parameter, and to power inverter, low-voltage adjustable DC power work state is automatically adjusted, and carries out closed loop control
System；Low-voltage adjustable DC power supply is used to carry out the constant pressure output of voltage variable；Power inverter and low-voltage adjustable DC power supply electricity
Connection, power inverter are used to the DC voltage of input being converted into corresponding high-frequency ac power signal；High frequency power transformation
High-frequency ac power signal is coupled on radio frequency ablation catheter and back electrode by device, and radio frequency ablation catheter and back electrode are to disease
Become position and carries out ablation.
In another preferred example, communication backplane is additionally provided in shell, communication backplane is electrically connected with power module, communication backplane
For providing DC power supply for device, and communication backplane is the medium of device and computer exchange of information.
In another preferred example, communication backplane and the data exchange of computer are to be based on cable network, optical fiber or wireless network
What network carried out.
In another preferred example, RF generating unit and electrophysiological recording unit are following any structure：Plate card type structure,
Stack formula structure or by polylith electronic line structure.
In another preferred example, power module is the form of high frequency switch power or the form of industrial frequency rectifying.
In another preferred example, the output voltage of low-voltage adjustable DC power supply is 0-20V.
In another preferred example, switch is equipped between communication backplane and low-voltage adjustable DC power supply unit, for interrupting
The output of RF energy and rupturing duty partial power when electric current and voltage overload.
In another preferred example, the output power of power inverter is 0-100W.
In another preferred example, device includes external floor push, and external floor push is used to control the fortune of radio-frequency drive
Row terminates.
In another preferred example, power module is located at enclosure, or is placed on shell exterior.
Main advantages of the present invention include：
(a) reduce the overall dimensions and volume of dirty electrophysiological diagnosis treatment system.
(b) simplify the interconnection between interventional cardiac procedures all parts.
(c) more stablize, and failure rate is lower.
(d) maintenance work to independent ablation apparatus and relevant connection cable etc. is avoided.
(e) storage transportation cost is reduced.
(f) multi-channel electrophysiology recorder instrument system and the incompatible problem of heart radiofrequency melting instrument are avoided.
(g) working efficiency is improved.
Therefore, the present invention, which utilizes, minimizes the power cell of RF ablation, and it is attached in electro physiology equipment, shape
At a single unit system, space occupy-place greatly reduces, and is effectively reduced the space hold of operation bedside.Also subtract significantly simultaneously
Few equipment cost of wheeling, has apparent clinical value；System after integration is interconnected by interconnector, reduces people in use
For integrity problem caused by factor and device factor, reduce the risk in clinic；Modular design, the radio frequency unit for being
Repair and replace very convenient rapid.
It should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment)
It can be combined with each other between each technical characteristic of body description, to form a new or preferred technical solution.As space is limited, exist
This no longer tires out one by one states.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the radio frequency generation therapeutic device in an example of the invention.
Fig. 2 is the overall perspective of the radio frequency generation therapeutic device in an example of the invention.
Fig. 3 is the work flow diagram of the RF generating unit in an example of the invention.
Fig. 4 is the module diagram of the RF generating unit in an example of the invention.
Fig. 5 is RF generating unit in an example of the invention under different control voltages, the output on different loads
Power diagram.
Fig. 6 is before and after the RF generating unit in an example of the invention works in radio frequency operation and not to electro physiology waveform
Interference waveform figure.
In each attached drawing, each mark is as follows：
1- power cables；
2- communication cables；
3- host computers；
4- displays；
5- power modules；
6- communication backplanes；
7- shells；
8- low-voltage adjustable DC power supplys；
9- electrophysiological function boards；
10- radio-frequency power generating units；
11- power inverters；
12- connectors；
13- floor push connecting interfaces；
14- radio frequency ablation catheter interfaces；
15- the loop of rf electrode interfaces；
Floor push outside 16-；
17- radio frequency ablation catheters；
18- the loop of rf back electrodes；
19- sensor networks；
20- power control modules；
21- high-frequency power transformers；
22- isolating interface separator bars.
Specific implementation mode
The present inventor after extensive and in-depth study, by largely screening, develops a kind of for heart radio frequency for the first time
Therapeutic device occurs for the radio frequency of ablation, which is a kind of highly integrated, radio-frequency signal generator device of structure novel, the dress
The structure for being designed to standard modular is set, and design is small and exquisite enough, is set so that it is desirably integrated into the diagnosis of other Cardiac interventionals
In standby (such as in electrophysiological recording device or in similar heart electro physiology three-dimensional mapping equipment), the device is by means of other
The power supply being had been provided in diagnostic device, communication interface and software interface system etc. support system, realize complete instrument
Power supply supply to be offered, communication and human interface function are needed, to reduce the redundancy to these components, and reduces collection
Whole volume after, simplifies connection, improves procedure efficiency, reduces failure rate, and make system more easily operation and maintenance,
The present invention is completed on this basis.
Typically, the radio frequency generation therapeutic device for heart radio frequency ablation treatment of the invention is utilized RF ablation
Power cell minimizes, and it is attached in electro physiology equipment, forms a single unit system, the power cell after miniaturization can
With the power supply and other amplifier units with electro physiology equipment, it is covered in the shell of an entirety.The unit and electro physiology
The interconnection of other parts is carried out by inside cable, this partial cables is hidden in monolithic case.It is raw using original electricity
Manage display device and recording device of the system computerized equipment as radio-frequency signal generator corresponding function.
It should be noted that the radio frequency unit moduleization of the E class A amplifier As based on board is one kind that the present invention realizes
Form, the professional technician in the industry can select the technology of different high power densities, and form of tubes is not how, still at this
Within the scope of invention covering.It is equally not based on modularization, but global design, possibility can obtain smaller overall volume,
Also in the coverage area of the present invention.Electrophysiological diagnosis equipment described in the present invention refers to the heart provided for diagnostic function
Dirty intervention special equipment, this equipment can provide waveform plot/recording/playback, catheter navigation mapping, electrophysiological stimulation, etc.
One or more in various functions.Communication backplane of the present invention can also be a pile line, major embodiment power supply
Must be not necessarily a backboard with the effect of communication.
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, attached drawing is schematic diagram, therefore apparatus of the present invention and equipment are not shown by described
The size or ratio of intention limit.
It should be noted that in the claim and specification of this patent, such as first and second or the like relationship
Term is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying
There are any actual relationship or orders between these entities or operation.Moreover, the terms "include", "comprise" or its
Any other variant is intended to non-exclusive inclusion so that including the processes of a series of elements, method, article or
Equipment includes not only those elements, but also includes other elements that are not explicitly listed, or further include for this process,
Method, article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence " including one " limited
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.
Embodiment
Core of the invention is a kind of modular, radio-frequency power generating means that can be worked independently, which needs
Other are integrated into interventional cardiac procedures in necessary diagnostic device, using power supply existing in these diagnostic devices, is led to
Letter, the components such as man-machine interface complete a complete cardiac electrophysiology ablation apparatus and need the function of realizing.It should be clear that
It is this integrated, although having relied on the function of the offer of host equipment, these functions these host equipments or system Central Plains originally
It is necessary.
It includes RF generating unit, electrophysiological recording unit, and the communication back of the body that therapeutic device, which occurs, for the radio frequency of the present embodiment
Plate 6 and power module 5 (AC/DC units), above-mentioned component are placed in the compact shell 7 that one has heat dissipation design, shape
At an entirety, as a radio-frequency power treatment and the two-in-one new equipment of electrophysiological diagnosis.
As depicted in figs. 1 and 2, increase the RF generating unit of one piece of autonomous working in original electrophysiological recording system,
The RF generating unit is designed to the structure of plate card type, which can also be designed to other forms, for example stack formula,
It can be even made of polylith electronic circuit, but it is mainly characterized by being integrated in a shell 7 with electrophysiological recording unit
Portion, and the cable for needing not move through outside can be attached with electrophysiological recording unit, the device is in object during normal use
It is not necessary to be touched by operator in reason.
The electrophysiological recording unit is used to obtain the heart excitement information of sufferer, the location information of conduit, the blood pressure of patient
One or more of electrophysiology informations such as information, the unit can also be designed to provide electro photoluminescence to heart, realize the above work(
Can medium be by with the heart other interposing catheter that either human body connects or multiple electrodes.
The RF generating unit may be mounted in the communication backplane 6 being connected by communication cable 22 with host computer 3,
It is supplied from power supply is wherein obtained, and the various data (work(that such as radio frequency needs are set is exchanged by communication backplane 6 and host computer 3
Rate, the power actually generated, the tissue impedance measured, radio frequency temperature etc.), and eventually need to be presented to operating personnel
Data presented on display 4.As a kind of realization method, this data exchange can be based on communication cable 22
Wired network communication is but it is also possible to be other forms, and for example optical fiber is even wireless.External floor push 16 passes through foot-operated
Switch connecting interface 13 be connected with communication backplane 6, by external floor push 16 can effectively control radio-frequency drive operation or
It terminates.
Communication backplane 6 is that by power cable 1, the power-supply system from wall takes electricity, power supply via an independent current source module 5
A kind of way of realization of module 5 can be the form of high frequency switch power, but can also use the form of industrial frequency rectifying, Qian Zheyin
It is a kind of realization of optimization for power density higher.Power module 5 can be built in inside shell 7, can be also placed on outside shell 7
Portion, to be further reduced the volume of device, this part has had highly developed source power supply module available.
RF generating unit 10 obtains stable powerful direct-current power supply from communication backplane 6, and power supply is fed into
After RF generating unit 10, voltage transformation is carried out by low-voltage adjustable DC power supply 8, the constant pressure for generating a voltage variable is defeated
Go out.What it is due to the processing of other electrophysiological function boards 9 is all very faint human body signal, and the output of regulated power supply must be careful
To reduce influence of the space radiation transmitting to electro physiology board, the present embodiment is the range by reducing output voltage for processing, with
Ensure the influence to voltage output.It needs to choose lower adjustable voltage in principle, but under conditions of output power is constant, more
Low adjustable voltage means output current bigger, this often increases the loss of device, especially transformer and switching tube, is
The electric current of bigger is born, the size of device needs to increase, and adjustable output voltage of the empirical evidence less than 20V can in low-voltage
An acceptable balance is obtained between high current while can guarantee that the volume of circuit is still more small and exquisite.This reduction is empty
Between the balance of radiation-emitting and device volume can be by using conducting resistance smaller, the higher power transistor of switching frequency comes
It realizes.For example, as shown in fig. 6,22 left side of isolating interface separator bar is in radio-frequency power output, right side is to stop exporting.It can be with
Find out, in radio frequency output electrode and other electrodes, does not show interference variations before and after power output stopping.
The variable voltage generated by low-voltage adjustable DC power supply 8 is loaded on power inverter 11 thereafter, power inverting
Device 11 is responsible for the DC voltage of input being converted into corresponding high-frequency ac power signal, which passes through high-frequency power transformer
21 are loaded into human body.The sensor network 19 of the voltage actually received on human body, electric current and temperature signal by isolation, transmission
The power control module 20 of power cell is returned, power control module 20 is sent according to host computer 3 by communication backplane 6
Sets requirement carries out power setting, and monitors the parameters on human body, and the maincenter as radio-frequency power unit is completed every
Function control.
The device is connected by the various interfaces on inside cable or connector 12, with the panel of electro physiology system
It connects, these interfaces can be increased or be reduced depending on actual.It is equipped with radio frequency ablation catheter interface in the present embodiment
14 and the loop of rf electrode interface 15.These interfaces are respectively used to connect radio frequency ablation catheter 17 in the course of surgery and radio frequency returns
Road back electrode 18.It is that radio frequency ablation catheter 17 connects human body, the back of the body as a pole of loop electrode that one, which typically uses example,
Portion's electrode forms closed circuit as an other pole in circuit and human body, is circulated by the high-frequency electrical that high-frequency power transformer 21 is sent out
The tissue that the two is loaded near tissue, especially 17 head of radio frequency ablation catheter is crossed, forms high frequency fuel factor to complete
At ablation.Another realization of the loop of rf back electrode is another electricity being reduced on radio frequency ablation catheter 17
Pole, such ablation form are clinically referred to as bipolar ablation, and this variation does not influence the essence of the present invention.
The method for realizing 10 function of RF generating unit is to use the higher E power-like amplifiers technology of power density,
To realize the inversion of radio-frequency power with smaller volume.As a kind of specific implementation, one kind of radio-frequency power generating unit 10
Design is described below：
As shown in figure 3, back panel connector provides all connections that board needs：Interface for digital communication, 24V power inputs,
RF energy exports, back electrode output, duct temperature sensor input.
Wherein Interface for digital communication is responsible for the transmitting control data between backboard and FPGA control logics, considers signal transmission
Interference free performance carry out output transmission with Low Voltage Differential Signal (LVDS).The various control parameters of radio-frequency module are connect from this
It mouthful imports, treated the operational datas such as power, impedance of the control logic in programmable logic array (FPGA) are also by this
Interface is transmitted to backboard.
24V inputs whole power supply as module, into board after be divided into two-way, pass through DC/DC converter circuit generation all the way
Low-tension supply supplies internal circuit, and the electronic switch in addition passing through 24V all the way gives power conversion part, 24V electronic switches
The output of RF energy can reliably be interrupted by functioning as a Redundancy Design under any circumstance.24V electronic switches
Another effect can be cut off the power when electric current and voltage overload, and protection power source and subsequent conditioning circuit be not by further
Damage.
The Bulk voltage conversion circuits of a 200W are accessed by the 24V of electronic switch, it is therefore an objective to which generating a 0-20V can
The control signal of the voltage of tune, adjustable voltage output valve is generated by the control simulation DAC of FPGA.FPGA module generates a 400-
The adjustable pwm signal of 500KHz, this model are sent into ClassE power amplifiers and carry out power amplification, the amplification of ClassE amplifiers
The power of same frequency afterwards is transmitted to human body after power transformer coupling thereafter.Real output herein is by human body
Load and ClassE power supply namely 0-20V the control of Bulk voltage outputs, FPGA module is actual on collecting human body
After performance number changes, it can be compensated by adjusting the output voltage of Bulk power supplys, to ensure the stabilization of power output
Property, this adjust is completed by the PID adjustment modules in FPGA.PID modules ensure output power according to the target power of setting
Stability, the target power of setting is by the control signal deciding on backboard, to realize that output power can be stablized according to setting
Power adjustable, it be not described in detail herein.It needs, it is worth mentioning that in view of Class E circuits are operated on off state, to ensure it
In each transistor be operated in that ZVS and ZCS on off states are most important, this is mainly reflected in the filter circuit and electricity of ClassE
It needs accurate adjustable between the actual working frequency in road, in the case where original paper tolerance is certain, can pass through and adjust actual FPGA
The working frequency of output of PWM realize the guarantee to ZVS the and ZCS states of power transistor.Class E power amplifiers
Actual loading is tissue, and the power-adjustable for exporting effective 0-100W just can guarantee the effect of RF ablation, tissue
Its effective impedance ranging from 50 Ω -300 Ω, in the impedance ranges, under conditions of input voltage range is given (0-20V).Such as
Shown in Fig. 5, under different load impedances, output power rises as Bulk voltages rise.
It is loaded into the power signal of human body, the potential and current transformers pickup being connected across on isolating interface, and pass through
Enter FPGA control logics after high-speed A/D conversion circuit after the pickup of wide bandwidth signal conditioning circuit, FPGA is according to P=VxI's
Form directly carries out high-speed computation acquisition by digital circuit, in order to prevent to there is any one link that single event occurs in uplink
Barrier causes the power for being actually loaded to patient end to be abnormal, and separately designs the voltage of a set of backup, and current sensor circuit is passed through
Simulated power measuring circuit carries out power calculation, and the power signal of generation passes through low speed analog-to-digital conversion circuit conversion into digital signal
Pass to FPGA.This two-way power signal is compared in FPGA, in the case where the value of two sensors is abnormal,
FPGA can be supplied by the power supply of 24V switch OFF power sections.
The supravasal temperature signal additionally related to RF ablation in applying is sent after the sensor pickup of catheter head
Enter the occasionally thermal resistance temperature sensor modulate circuit of the thermoelectricity on board to be handled, be isolated through number after becoming digital signal
It is sent into FPGA, the temperature signal fed back in FPGA may participate in closed-loop control if necessary, to realize that stationary temperature is discharged.
As shown in figure 4, above each submodule is designed on the circuit board that a block size is 250mm*170mm*30mm.
All references mentioned in the present invention is incorporated herein by reference, independent just as each document
It is incorporated as with reference to such.In addition, it should also be understood that, after reading the above teachings of the present invention, those skilled in the art can
To be made various changes or modifications to the present invention, such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
Claims (10)
1. therapeutic device occurs for a kind of radio frequency for heart radio frequency ablation treatment, which is characterized in that described device includes outside one
Shell, and power module, RF generating unit and electrophysiological recording unit are equipped in the shell；
The power module is used to provide electric energy for the RF generating unit and the electrophysiological recording unit；
The RF generating unit includes power control module, low-voltage adjustable DC power supply, power inverter, high frequency power transformation
Device, back electrode and radio frequency ablation catheter；
Other each components of the power control module and the RF generating unit are all connected with, and the power control module is used for
Voltage, electric current, the power parameter of the power inverter and sensor circuit feedback are collected, and to the power inverter, institute
It states low-voltage adjustable DC power work state to be automatically adjusted, carries out closed-loop control；
The low-voltage adjustable DC power supply is used to carry out the constant pressure output of voltage variable；
The power inverter and low-voltage adjustable DC power electric connection, the DC voltage that the power inverter is used to input
It is converted into corresponding high-frequency ac power signal；
High-frequency ac power signal is coupled to the radio frequency ablation catheter and the back electrode by the high-frequency power transformer
On, the radio frequency ablation catheter and back electrode carry out ablation to diseased region.
2. device as described in claim 1, which is characterized in that be additionally provided with communication backplane, the communication backplane in the shell
It is electrically connected with the power module, the communication backplane is used to provide DC power supply, and the communication backplane for described device
It is the medium of described device and computer exchange of information.
3. device as claimed in claim 2, which is characterized in that the communication backplane and the data exchange of the computer are bases
It is carried out in cable network, optical fiber or wireless network.
4. device as described in claim 1, which is characterized in that the RF generating unit and the electrophysiological recording unit are
Following any structure：Plate card type structure stacks formula structure or by polylith electronic line structure.
5. device as described in claim 1, which is characterized in that the power module is the form of high frequency switch power, or
The form of industrial frequency rectifying.
6. device as described in claim 1, which is characterized in that the output voltage of the low-voltage adjustable DC power supply is 0-20V.
7. device as described in claim 1, which is characterized in that in the communication backplane and the low-voltage adjustable DC power supply list
Switch is equipped between member, the output for interrupting RF energy and rupturing duty part electricity when electric current and voltage overload
Source.
8. device as described in claim 1, which is characterized in that the output power of the power inverter is 0-100W.
9. device as described in claim 1, which is characterized in that described device includes external floor push, and the outside is foot-operated
Switch the operation or termination for controlling radio-frequency drive.
10. device as described in claim 1, which is characterized in that the power module is located in the shell portion, or is placed on institute
State shell exterior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190202.0A CN108652734A (en) | 2017-03-27 | 2017-03-27 | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190202.0A CN108652734A (en) | 2017-03-27 | 2017-03-27 | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108652734A true CN108652734A (en) | 2018-10-16 |
Family
ID=63785704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710190202.0A Pending CN108652734A (en) | 2017-03-27 | 2017-03-27 | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108652734A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110859611A (en) * | 2019-12-19 | 2020-03-06 | 上海宏桐实业有限公司 | Board card formula electrophysiological signal amplification system |
| WO2023000153A1 (en) * | 2021-07-19 | 2023-01-26 | 上海宏桐实业有限公司 | Integrated electrophysiological signal recording and processing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894642Y (en) * | 2005-12-23 | 2007-05-02 | 李楚雅 | Heart radiofrequency melting instrument |
| CN102871725A (en) * | 2011-07-13 | 2013-01-16 | 韦伯斯特生物官能(以色列)有限公司 | Patient leakage current limitation |
| CN103561814A (en) * | 2011-04-01 | 2014-02-05 | 弗拉克斯医疗公司 | Systems, devices, and methods for ablation of vessel walls from within |
| CN104507533A (en) * | 2012-04-02 | 2015-04-08 | 医学发展技术不记名股份公司 | Implant device and system for ablation of a vessel's wall from the inside |
| CN104901630A (en) * | 2015-05-27 | 2015-09-09 | 复旦大学 | Radio frequency adjustable phase difference power amplifier circuit realizing linear ablation |
| CN207545197U (en) * | 2017-03-27 | 2018-06-29 | 上海宏桐实业有限公司 | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment |
-
2017
- 2017-03-27 CN CN201710190202.0A patent/CN108652734A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894642Y (en) * | 2005-12-23 | 2007-05-02 | 李楚雅 | Heart radiofrequency melting instrument |
| CN103561814A (en) * | 2011-04-01 | 2014-02-05 | 弗拉克斯医疗公司 | Systems, devices, and methods for ablation of vessel walls from within |
| CN102871725A (en) * | 2011-07-13 | 2013-01-16 | 韦伯斯特生物官能(以色列)有限公司 | Patient leakage current limitation |
| CN104507533A (en) * | 2012-04-02 | 2015-04-08 | 医学发展技术不记名股份公司 | Implant device and system for ablation of a vessel's wall from the inside |
| CN104901630A (en) * | 2015-05-27 | 2015-09-09 | 复旦大学 | Radio frequency adjustable phase difference power amplifier circuit realizing linear ablation |
| CN207545197U (en) * | 2017-03-27 | 2018-06-29 | 上海宏桐实业有限公司 | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110859611A (en) * | 2019-12-19 | 2020-03-06 | 上海宏桐实业有限公司 | Board card formula electrophysiological signal amplification system |
| WO2023000153A1 (en) * | 2021-07-19 | 2023-01-26 | 上海宏桐实业有限公司 | Integrated electrophysiological signal recording and processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11350978B2 (en) | Flexible neutral electrode | |
| US11364075B2 (en) | Radio frequency energy device for delivering combined electrical signals | |
| US20200106220A1 (en) | Flexible hand-switch circuit | |
| US20200090808A1 (en) | First and second communication protocol arrangement for driving primary and secondary devices through a single port | |
| US20190201090A1 (en) | Capacitive coupled return path pad with separable array elements | |
| EP2289445B1 (en) | Electrosurgical generator with an isolating fiber optic connection circuit | |
| JP2024512717A (en) | Backplane connector mounting mechanism for modular energy systems | |
| US20220313372A1 (en) | Architecture for modular energy system | |
| US20220318179A1 (en) | Intelligent data ports for modular energy systems | |
| CN111526833A (en) | Surgical instrument with flexible electrodes | |
| US20220319693A1 (en) | Radio frequency identification token for wireless surgical instruments | |
| CN207545197U (en) | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment | |
| CN117157026A (en) | Energy module with dual power amplifier | |
| EP4125659A1 (en) | Energy delivery mitigations for modular energy systems | |
| WO2014159446A1 (en) | Electrosurgical systems | |
| CN108652734A (en) | Therapeutic device occurs for the radio frequency for heart radio frequency ablation treatment | |
| JP2024059910A (en) | Radiofrequency energy device for delivering a composite electrical signal - Patents.com | |
| CN105615992B (en) | The Electrosurgical system of parasitic parameter for multiple-frequency interrogation Electrosurgical instrument | |
| CN205831903U (en) | A kind of surgical operation energy platform system | |
| CN117282024B (en) | Electric field emission system | |
| JP7263365B2 (en) | Capacitively coupled return path pads with separable array elements | |
| US20230414298A1 (en) | Surgical footswitch assignment for modular energy system | |
| CN117282024A (en) | electric field emission system | |
| CN113180708A (en) | Artificial intelligence intraoperative nerve monitoring stimulation current regulation and control system and regulation and control method thereof | |
| JP2024516524A (en) | Energy module having dual power amplifiers - Patents.com |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |