CN107260297A - A kind of radio frequency ablation catheter and radio frequency ablation system - Google Patents

A kind of radio frequency ablation catheter and radio frequency ablation system Download PDF

Info

Publication number
CN107260297A
CN107260297A CN201710527280.5A CN201710527280A CN107260297A CN 107260297 A CN107260297 A CN 107260297A CN 201710527280 A CN201710527280 A CN 201710527280A CN 107260297 A CN107260297 A CN 107260297A
Authority
CN
China
Prior art keywords
electrode
radio frequency
frequency ablation
wire
ablation catheter
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
Application number
CN201710527280.5A
Other languages
Chinese (zh)
Inventor
储慧民
陈艳
曹敏华
程华胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Minimally Invasive Electrophysiology Medical Polytron Technologies Inc
Shanghai Microport EP MedTech Co Ltd
Original Assignee
Shanghai Minimally Invasive Electrophysiology Medical Polytron Technologies Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Minimally Invasive Electrophysiology Medical Polytron Technologies Inc filed Critical Shanghai Minimally Invasive Electrophysiology Medical Polytron Technologies Inc
Priority to CN201710527280.5A priority Critical patent/CN107260297A/en
Publication of CN107260297A publication Critical patent/CN107260297A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1492Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25Bioelectric electrodes therefor
    • A61B5/279Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283Invasive
    • A61B5/287Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345Vascular system
    • A61B2018/00351Heart
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00595Cauterization
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636Sensing and controlling the application of energy
    • A61B2018/00773Sensed parameters
    • A61B2018/00839Bioelectrical parameters, e.g. ECG, EEG
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1405Electrodes having a specific shape
    • A61B2018/1407Loop
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1467Probes or electrodes therefor using more than two electrodes on a single probe

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Cardiology (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Plasma & Fusion (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Otolaryngology (AREA)
  • Physiology (AREA)
  • Surgical Instruments (AREA)

Abstract

The present invention provides a kind of radio frequency ablation catheter, including tip electrode, at least one pair of signal extraction electrode, at least one pair of first wire, and the second wire;Wherein, two signal extraction electrodes in signal extraction electrode described in each pair are electrically connected with two first wires in the first wire described in each pair, signal extraction electrode described in each pair is used to extract the first intracardiac signal, and the first wire described in each pair is used to transmit the described first intracardiac signal;The tip electrode is electrically connected with second wire, the tip electrode is alternatively used for transmitting RF energy or for extracting the second intracardiac signal, second wire is alternatively used for transmission RF energy or the second intracardiac signal, right overhead during electrode discharge, the extraction of intracardiac signal is independent of tip electrode, so the extraction of intracardiac signal is not easily susceptible to the interference of radiofrequency signal, the accuracy and reliability of the intracardiac signal of extraction are improved.Invention also provides a kind of radio frequency ablation system.

Description

A kind of radio frequency ablation catheter and radio frequency ablation system
Technical field
The present invention relates to a kind of medical instruments field, more particularly to a kind of radio frequency ablation catheter and radio frequency ablation system.
Background technology
Catheter ablation is under the monitoring of X-ray angiography machine, by puncturing under femoral vein, femoral artery or clavicle The blood vessels such as vein, radio frequency ablation catheter are partially installed in the chambers of the heart, then by radio frequency ablation catheter with the side of electrophysiologic study Formula is determined to cause tachycardic abnormal structure (ablation target spot), then discharged by radio frequency ablation catheter at abnormal structure 100KHZ~1.5MHZ high frequency electric, to produce high temperature at abnormal structure (ablation target spot) place, makes abnormal structure by heat energy Moisture evaporation, dry necrosis in the tissue at place, to reach therapeutic purposes.The damage that this therapeutic modality is caused to tissue is equal Even, scope is small, clear border, be easily controlled.Specifically, compared with drug therapy, catheter ablation is not temporary pre- Prevent or terminate tachycardic breaking-out, but antiarrhythmic drug is no longer needed to use after disposable radical cure, successful surgery;With Surgical operation is compared, and it need not open chest, it is not necessary to general anesthesia, and patient's pain is small, and operating method is easy.Therefore, conduit radio frequency disappears Melt art to be widely used in treating tachyarrhythmia.
Catheter ablation needs to extract intracardiac signal by radio frequency ablation catheter, to instruct patient to judge cardiac muscular tissue Situation, it is quick to determine ablation target spot, and judge ablation terminal by reading intracardiac signal.At present, radio frequency ablation catheter includes Tip electrode, at least one ring electrode, adjustable curved segment, main paragraph, control curved hand grip and buttock line cable, wherein, it is the tip electrode, described Adjustable curved segment, the main paragraph, the control curved hand grip, the buttock line cable are sequentially connected and connect, and ring electrode is arranged on adjustable curved segment On.The buttock line cable other equipment supporting with the radio frequency ablation catheter is connected.The tip electrode and ring of radio frequency ablation catheter Electrode, which coordinates, extracts intracardiac signal, and the tip electrode is additionally operable to transmission radiofrequency signal to cardiac muscular tissue, to carry out ablation.So And, it has been found that the tip electrode of this radio frequency ablation catheter can disturb tip electrode to extract the heart while radiofrequency signal is transmitted Interior signal, serious can also cover real intracardiac signal, cause patient can not accurately judge the situation of cardiac muscular tissue, i.e., can not It is accurate to judge ablation terminal, influence surgical result.
The content of the invention
It is an object of the invention to provide a kind of radio frequency ablation catheter, head is both used to solve existing radio frequency ablation catheter Electrodes transfer radiofrequency signal, extracts intracardiac signal using tip electrode again, makes what the extraction of intracardiac signal was disturbed by radiofrequency signal Problem.
In order to solve the above technical problems, the present invention provides a kind of radio frequency ablation catheter, including tip electrode, in addition at least one To signal extraction electrode, at least one pair of first wire, and the second wire;Wherein, two in signal extraction electrode described in each pair Individual signal extraction electrode is electrically connected with two first wires in the first wire described in each pair, signal extraction electricity described in each pair Pole is used to extract the first intracardiac signal, and the first wire described in each pair is used to transmit the described first intracardiac signal;The tip electrode with The second wire electrical connection, the tip electrode is alternatively used for transmitting RF energy or for extracting the second intracardiac letter Number, second wire is alternatively used for transmission RF energy or the second intracardiac signal.
Optionally, at least one electrode at least one pair of described signal extraction electrode is nested electrode, the nested electricity Pole is sheathed on the tip electrode, and the first insulating barrier is filled between the nested electrode and the tip electrode to isolate the head Electrode and the nested electrode.
Optionally, the tip electrode has an inner chamber, an outer wall and through the outer wall to be connected with the inner chamber First through hole, first wire is electrically connected through the inner chamber and the first through hole with the nested electrode.
Optionally, the radio frequency ablation catheter also includes a pillar, and the pillar is located in the first through hole, and described Protective pipe sleeve is on the part that first wire passes through the first through hole.
Optionally, the nested electrode is ring electrode.
Optionally, at least one annular groove is offered on the outer surface of the outer wall, is set in each annular groove It is equipped with a ring electrode, and the outer surface of the ring electrode is not less than the outer surface of the outer wall.
Optionally, the interior intracavitary of the tip electrode is filled with the second insulating barrier to isolate first wire and described second Wire.
Optionally, first insulating barrier and the second insulating barrier are the adiabatic glue of insulation.
Optionally, the radio frequency ablation catheter includes two pairs of signal extraction electrodes, signal extraction described in one pair of which Electrode is point electrode.
Optionally, the radio frequency ablation catheter also includes adjustable curved segment, distal end and the tip electrode of the adjustable curved segment Connection, the point electrode is fastened in the adjustable curved segment.
Optionally, the adjustable curved segment in a tubular form, offers at least two second through holes on the tube wall of the adjustable curved segment, A point electrode is provided with each second through hole, each point electrode includes extracting the first intracardiac signal Head, bar portion and fixed part, the bar portion runs through second through hole, and one end of the bar portion and the head, which are fixed, to be connected Connect, the other end of the bar portion is fixedly connected with the fixed part, and the head is stuck in the outside of the tube wall, the fixation Portion is stuck in the inner side of the tube wall.
Optionally, the fixed part is cone or round platform, and the fixed part is connected with the other end of the bar portion One end is the bottom surface of cone, or is the larger bottom surface of round platform area.
Present invention also offers a kind of radio frequency ablation system, it includes above-mentioned any radio frequency ablation catheter, electrocardio letter Number monitoring device and radio-frequency power supply, it is described when second wire of the radio frequency ablation catheter disconnects with radio-frequency power supply Second wire is electrically connected with the electrocardiosignal monitoring device, when second wire and radio frequency electrical of the radio frequency ablation catheter When source is connected, second wire disconnects with the electrocardiosignal monitoring device;First wire is believed with the electrocardio all the time The electrical connection of number monitoring device.
In the radio frequency ablation catheter and radio frequency ablation system that the present invention is provided, at least one pair of signal extraction electrode is used to carry The first intracardiac signal is taken, and passes through at least one pair of first first intracardiac signal of wire transmission to electrocardiosignal monitoring device;Right overhead In the case that electrode does not discharge, tip electrode can be connected with electrocardiosignal monitoring device, play the precision of increase signal extraction, The effect of further clear and definite focus target position, when tip electrode connects electric discharge with power supply, tip electrode is only used for launching radio frequency energy Amount, the second wire is only used for transmitting RF energy, therefore the extraction and transmission of intracardiac signal are not easily susceptible to the dry of RF energy Disturb, improve the accuracy of intracardiac signal extraction and transmission, be easy to operator to judge disappearing in heart according to intracardiac signal Melt target spot and ablation terminal, shorten operating time, improve the security and validity of operation.
Brief description of the drawings
Fig. 1 a be the radio frequency ablation catheter of embodiment one can front view of curved segment when not bending;
Fig. 1 b be the radio frequency ablation catheter of embodiment one can curved segment front view after bending;
Fig. 2 is the tip electrode of the radio frequency ablation catheter of embodiment one and the front view of partial adjustable curved segment;
Fig. 3 is the sectional view of the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter shown in Fig. 2 along line A-A;
Fig. 4 is the tip electrode of the radio frequency ablation catheter of embodiment illustrated in fig. 3 one along the sectional view of line B-B;
Fig. 5 is the tip electrode of the radio frequency ablation catheter of embodiment two and a front view of partial adjustable curved segment;
Fig. 6 is the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter of the embodiment two shown in Fig. 5 along line C-C Sectional view;
Fig. 7 is the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter of the embodiment two shown in Fig. 6 along line C-C The partial enlarged drawing of sectional view;
Fig. 8 is the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter of the embodiment two shown in Fig. 6 along line D-D Sectional view;
Fig. 9 is the tip electrode of the radio frequency ablation catheter in embodiment three and the front view of partial adjustable curved segment;
Figure 10 is the tip electrode of the radio frequency ablation catheter in example IV and the front view of partial adjustable curved segment.
Description of reference numerals:
100- radio frequency ablation catheters;110- tip electrodes;111- inner chambers;112- outer walls;113- first through hole;
114- annular grooves;The wires of 115- second;120- ring electrodes;The wires of 121- first;122- pillars;
Curved segment that 130- is adjustable;131- tube walls;The through holes of 132- second;140- main paragraphs;150- controls curved hand grip;
151- rotating disk toggles;152- knobs;160- buttock line cables;The insulating barriers of 171- first;
The insulating barriers of 172- second;The insulating barriers of 173- the 3rd;180- point electrodes;181- heads;182- bar portions;
183- fixed parts.
Embodiment
A kind of radio frequency ablation catheter proposed by the present invention is made further specifically below in conjunction with the drawings and specific embodiments It is bright.According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that, accompanying drawing is used Very simplified form and use non-accurately ratio, only to it is convenient, lucidly aid in illustrating the mesh of the embodiment of the present invention 's.
Embodiment one
Fig. 1 a be the radio frequency ablation catheter of embodiment one can front view of curved segment when not bending, Fig. 1 b are embodiment one Radio frequency ablation catheter can curved segment front view after bending, Fig. 2 is tip electrode and the part of the radio frequency ablation catheter of embodiment one Adjustable curved segment front view, Fig. 3 is the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter shown in Fig. 2 along line A-A Sectional view, Fig. 4 is the tip electrode of the radio frequency ablation catheter of embodiment illustrated in fig. 3 one along the sectional view of line B-B.
Referring to figs. 1 to Fig. 4, radio frequency ablation catheter 100 includes tip electrode 110, four ring electrodes 120 and adjustable curved segment 130.The distal end of the adjustable curved segment 130 is connected with the tip electrode 110.Two ring electrodes 120 are sheathed on the head electricity On pole 110, two ring electrodes 120 are sheathed in the adjustable curved segment 130.In the present invention, we will be sheathed on head electricity Ring electrode on extremely is referred to as nested electrode, therefore, in the present embodiment, with a pair of nested electrodes 120 on tip electrode 110.
In the present embodiment, for the ease of description, intracardiac signal is divided into the first intracardiac signal and the second intracardiac signal, the The signal that one intracardiac signal is extracted by ring electrode 120, the signal that the second intracardiac signal is extracted by tip electrode 110.In this reality Apply in example, the ring electrode 120 is signal extraction electrode, two ring electrodes 120 are composed of a pair, it is intracardiac for extracting first Signal.It is used to extract the first intracardiac signal a pair in other embodiments or in two pairs of ring electrodes.The tip electrode 110 can be selectively used for extracting the second intracardiac signal or launch RF energy.
In the present embodiment, when tip electrode 110 and radio-frequency power supply disconnection, the tip electrode 110 can be with electrocardiograph monitoring device It is connected, for extracting the second intracardiac signal, and when tip electrode 110 is connected with radio-frequency voltage, it is only used for launching radio frequency energy Amount, now ring electrode 120 described in each two, which is matched, is used to extract intracardiac signal, and the extraction of intracardiac signal is independent of tip electrode 110, so the extraction of intracardiac signal is not easily susceptible to the interference of radiofrequency signal, improve the intracardiac signal of extraction accuracy and can By property, the ablation target spot and ablation terminal in heart are judged according to intracardiac signal in order to operator, when can shorten operation Between, and improve the security and validity of operation.In addition, ring electrode 120 is for tip electrode 110, on the one hand its with The contact area of patient's endocardial tissue is small, and the scope of the intracardiac signal of extraction is small compared with tip electrode 110, it is easier to the place of electrocardiosignal Reason, improves the accuracy of the intracardiac signal of extraction, on the other hand, and ring electrode 120 can extract the intracardiac of circumferential 360 ° of propagation Signal, without multiple rotary radio frequency ablation catheter 100, saves operating time, facilitates patient to operate, practical.
Specifically, with reference to Fig. 3 and Fig. 4, the radio frequency ablation catheter 100 includes four first wires 121 and one second Wire 115.Each ring electrode 120 is electrically connected with first wire 121, the tip electrode 110 and described second Wire 115 is electrically connected.121 points of four first wires are two pairs, corresponding with two pairs of ring electrodes to electrically connect, available for transmitting first heart Interior signal.
When extracting the first intracardiac signal, the work of at least a pair of ring electrodes, and a pair electrically connected with this pair of ring electrode the One wire is used to transmit the first intracardiac signal.When two pairs of ring electrodes work, two couple first electrically connected with two pairs of ring electrodes Wire is used to transmit intracardiac signal, and two pairs of ring electrodes can extract the bipolar current potential in the chambers of the heart, will be double by the first wire 122 Electrode potential data are conducted to after being handled with the equipment for leading function more, just can be showed the intracardiac signal in the chambers of the heart, be compared In a pair of ring electrodes, the intracardiac signal that can be showed is more accurate.In other embodiments, a pair of ring electrodes can with two pairs or More than two pairs of the first wire electrical connection;That is a pair of ring electrodes extract intracardiac signal, multipair the first wire transmission heart Interior signal;When this extracts intracardiac signal to ring electrode, can also only have the first paired wire of part is used to transmit intracardiac letter Number.
With continued reference to Fig. 3 and Fig. 4, in the present embodiment, a kind of package assembly and group of new nested electrode are additionally provided Dress method.Specifically, the tip electrode 110 has an inner chamber 111, an outer wall 112, first through hole 113.The first through hole 113 run through the outer wall 112 to connect with the inner chamber 111.First wire 121 is through the inner chamber 111 and described the One through hole 113 is electrically connected with the ring electrode 120.
The radio frequency ablation catheter 100 also includes a pillar 122.The pillar 122 is located in the first through hole 113, And the pillar 122 is sheathed on first wire 121 and passed through on the part of the first through hole 113.The pillar 122 is used for Protect first wire 121.When the pillar 122 is assembled on the tip electrode 110, first by the pillar 122 by head electricity The outside of pole 110 penetrates first through hole 113 until the inner chamber 111 of tip electrode 110, the first wire 121 is from the beginning electric by pillar 122 The outside of pole 110 penetrates the inner chamber 111 of tip electrode 110, that is to say, that pillar 122 not only protects the first wire 121 in assembling It is injury-free, it is also convenient for the first wire 121 passing through the first through hole 113.
Further, with reference to Fig. 4, two annular grooves 114 are offered on the outer surface of the outer wall 112, each annular It is arranged with a ring electrode in groove 114, and the outer surface of the ring electrode 120 is not less than the outer surface of the outer wall 112.This Place, the outer surface of the ring electrode 120 refers to the outer peripheral face of the ring electrode 120, and the outer surface of the outer wall 112 is described The outer surface of tip electrode 110, the outer surface of the outer wall 112 is away from the inner chamber 111.For example, the appearance of the ring electrode 120 Face relative to the tip electrode 110 convex outer surfaces, or the ring electrode 120 outer surface and the tip electrode 110 Flush with outer surface.It should be appreciated that when ring electrode is arranged in annular groove 114, the width of the ring electrode 120 is little In the width of the annular groove 114, " width " refers to along the size in the axial direction of tip electrode.
With continued reference to Fig. 3 and Fig. 4, the first insulating barrier is each filled between the ring electrode 120 and the tip electrode 110 171, first insulating barrier 171 is used to be electrically isolated the tip electrode 110 and the ring electrode 120.Particularly, the tip electrode Second insulating barrier 172 is full of in 110 inner chamber 111.Second insulating barrier 172 can protect the He of the first wire 121 Second wire 115, can also avoid the signal of transmission in the first wire 121 and the second wire 115 from being interfered.Preferably, The insulating barrier 172 of first insulating barrier 171 and second is the adiabatic glue of insulation.The material of the glue includes but is not limited to ring Oxygen glue, UV glue, quick-drying gelatin etc..Wherein, UV glue is also known as shadowless glue, light-sensitive emulsion or ultraviolet cured adhesive.
In addition, with reference to Fig. 2, being sheathed on the ring electrode closest in the adjustable curved segment 130 and with the tip electrode 110 The 3rd insulating barrier 173 is scribbled between 120 and tip electrode 110.Preferably, the 3rd insulating barrier 173 is also the adiabatic glue of insulation Water.On the one hand make it that the ring electrode 120 being arranged in adjustable curved segment 130 is near apart from tip electrode 110 as far as possible, on the one hand can prevent The RF energy only launched in tip electrode 110 disturbs the extraction of intracardiac signal.Equally, the material bag of the 3rd insulating barrier 173 Include but be not limited to epoxy glue, UV glue, quick-drying gelatin etc..Wherein, UV glue is also known as shadowless glue, light-sensitive emulsion or ultraviolet cured adhesive.
As described above, in the present embodiment, two pairings of ring electrode 120 can extract the first intracardiac signal in the chambers of the heart, example Such as electrocardiosignal.Specifically, when the first intracardiac signal is extracted in two pairings of ring electrode 120, two ring electrodes 120 and the heart are passed through Chamber different parts are in contact, and extract the intracardiac signal of difference first of different tissues in the chambers of the heart, and two ring electrodes 120 are by the of extraction One intracardiac signal is conducted to corresponding device (such as cardioelectric monitor equipment) by the first wire handled after, just can show the heart The intracardiac signal of intracavitary.
The material of the tip electrode 110 and ring electrode 120 can be, but not limited to, stainless steel, copper, platinumiridio etc., excellent The tip electrode 110 of choosing and the material of ring electrode 120 are platinumiridio.
The length of the tip electrode 110 can be 1mm~12mm, preferably 8mm.The width of ring electrode 120 can for 0.5mm~ 4mm, the width of ring electrode 120 is the distance between distal end and near-end of ring electrode 120, the width of ring electrode 120 preferably For 1mm.Further, the width of ring electrode 120 is smaller than the 1/3 of the length of tip electrode 110.Two adjacent ring electrodes 120 it Between spacing be 0.5mm~2mm.Wherein, the ring electrode 120 and the near-end of tip electrode 110 being sheathed in adjustable curved segment 130 are most Small distance can be 0.1mm~2mm, and the ring electrode 120 that the minimum range is namely sheathed in adjustable curved segment 130 is electric apart from head The nearest distance of the near-end of pole 110.
In the present embodiment, the ring electrode being sheathed on tip electrode is when making, first by 110 points of ring electrode 120 and tip electrode After not making, then ring electrode 120 is assembled on tip electrode 110.Compared to directly passing through physical vapour deposition (PVD), chemical gaseous phase Ring electrode 120 is formed on tip electrode 110 by the mode of deposition, and ring electrode is set in into head by said structure and assembling mode On electrode, it can effectively prevent ring electrode from coming off, effectively isolation ring electrode and tip electrode, simplified electrode mounting process and reduction is penetrated The manufacturing cost of frequency ablation catheter, while so that the performance of the radio frequency ablation catheter more preferably.
With reference to Fig. 1 a and Fig. 1 b, the radio frequency ablation catheter 100 may also include main paragraph 140.The adjustable curved segment 130 Near-end is connected with the distal end of the main paragraph 140.The main paragraph 140 can be macromolecule woven tube.The macromolecule woven tube In braided wires material can be for stainless steel, Nitinol, PEEK (Polyetheretherketone, polyether-ether-ketone) etc..High score High polymer material in sub- woven tube can be nylon, polyurethane, PEBAX etc..
With continued reference to Fig. 1 a and Fig. 1 b, the radio frequency ablation catheter 100 may also include control curved hand grip 150.The main paragraph 140 near-end is connected with the distal end of the control curved hand grip 150.Further, the control curved hand grip 150 includes rotating disk toggle 151, Rotating disk toggle 151, to control the distal end of radio frequency ablation catheter 100 to bend, can mainly be controlled along rotating clockwise or counterclockwise Adjustable curved segment 130 is bent.With reference to Fig. 1 b, for example, the adjustable bilateral deflection of curved segment 130 can be controlled by rotating disk toggle 151.The control Curved hand grip 150 also includes knob 152, and the knob 152 is used for the bending for locking or unlocking the distal end of radio frequency ablation catheter 100 State.
The radio frequency ablation catheter 100 may also include buttock line cable 160, the control curved hand grip 150 and the buttock line cable 160 connections.First wire 121 and second wire 115 may pass through the tip electrode 110, the ring electrode 120, institute Adjustable curved segment 130, the main paragraph 140 and the control curved hand grip 150 is stated to electrically connect with buttock line cable 160.The buttock line line Cable 160 is used to transmit radiofrequency signal and intracardiac signal.Supporting its of the buttock line cable 160 and the radio frequency ablation catheter 100 He connects equipment (such as cardioelectric monitor equipment).
In summary, in the present embodiment, when carrying out chambers of the heart operation, first by the buttock line line of the radio frequency ablation catheter 100 Cable 160 is connected with corresponding equipment (such as cardioelectric monitor equipment), afterwards, portion radio frequency is disappeared by adjusting control curved hand grip 150 Melt the precalculated position in the arrival chambers of the heart of conduit 100, then the first intracardiac signal and tip electrode 110 extracted by ring electrode 120 is carried The the second intracardiac signal taken finds ablation target spot, launches RF energy to the muscle at ablation target spot by tip electrode 110 afterwards Tissue is melted, and at the same time tip electrode 110 will not be as intracardiac signal extraction, but continues to carry by ring electrode 120 The first intracardiac signal is taken, and the first of extraction the intracardiac signal is passed to by buttock line cable 160, buttock line line by the first wire 121 Cable 160 passes to corresponding equipment again, and terminal is melted with real-time judge.Needed to complete related treatment and detection according to operation Afterwards, radio frequency ablation catheter is taken out out of patient body.
Embodiment two
Fig. 5 is the tip electrode of the radio frequency ablation catheter of embodiment two and a front view of partial adjustable curved segment, and Fig. 6 is figure The sectional view of the tip electrode of the radio frequency ablation catheter of embodiment two shown in 5 and partial adjustable curved segment along line C-C, Fig. 7 is Fig. 6 The partial enlargement of the tip electrode of the radio frequency ablation catheter of shown embodiment two and partial adjustable curved segment along the sectional view of line C-C Figure, Fig. 8 is the section view of the tip electrode and partial adjustable curved segment of the radio frequency ablation catheter of the embodiment two shown in Fig. 6 along line D-D Figure.
With reference to Fig. 5 to Fig. 8, the radio frequency ablation catheter 100 in the present embodiment also includes being fixed in the adjustable curved segment 130 A pair of point electrodes 180.In the present embodiment, the ring electrode 120 and point electrode 180 are signal extraction electrode, a point Electrode 180 and a ring electrode 120 are matched to be matched for the first intracardiac signal of extraction, or two point electrodes 180 For extracting the first intracardiac signal.Preferably two point electrodes 180 are matched, and the signal so extracted is more accurate.
The point electrode 180 can be fastened in the adjustable curved segment 130.Specifically, with reference to Fig. 6, Fig. 7 and Fig. 8, it is described can Adjust curved segment 130 in a tubular form.At least two second through holes 132 are offered on the tube wall 131 of the adjustable curved segment 130.It is each described A point electrode 180 is provided with second through hole 132.Each point electrode 180 includes extracting the head of intracardiac signal 181st, bar portion 182 and fixed part 183, the bar portion 182 run through second through hole 132, one end of the bar portion 182 with it is described Head 181 is fixedly connected, and the other end of the bar portion 182 is fixedly connected with the fixed part 183, and the head 181 is stuck in The outside of the tube wall 131, the fixed part 183 is stuck in the inner side of tube wall 131.Electricity will be put by head 181 and fixed part 183 Pole 180 is stuck on the tube wall 131 of adjustable curved segment 130, has both prevented point electrode 180 from departing from tube wall 131 and dropping to radio frequency ablation catheter 100 outside, also prevent point electrode 180 and departs from the inside that tube wall 131 drops to radio frequency ablation catheter 100, you can effectively keep away Exempt from point electrode 180 to come off from adjustable curved segment 130, improve the reliability and security of radio frequency ablation catheter 100.
The fixed part 183 is, for example, the other end of cone or round platform, the fixed part 183 and the bar portion 182 One end of connection is the bottom surface of cone, or is the larger bottom surface of round platform area.In this way, being easy to fixed part 183 from adjustable bending The tube wall 131 of section 130 is outer to be entered in tube wall 131 through the second through hole 132, and point electrode 180 is stuck in into pipe by the bottom surface On wall 131.
With reference to Fig. 8, the radio frequency ablation catheter 100 in the present embodiment may also include the second wire 115, second wire 115 pass through the tube wall 131 of the adjustable curved segment 130 to be electrically connected with the point electrode 180, and second wire 115 is used to transmit The the first intracardiac signal extracted.For example, second wire 115 may pass through head 181 of the tube wall 131 directly with point electrode 180 Connection.Certainly, one of bar portion 182 and fixed part 183 of the point electrode 180 can be electrically connected with the second wire 115, to pass Pass the first intracardiac signal of extraction.
It is preferred that, point electrode 180 described at least two is circumferentially distributed along adjustable curved segment 130, that is, causes at least two institutes State point electrode 180 to be annularly distributed in the adjustable curved segment 130, in order in the same position of the radio frequency ablation catheter 100 The intracardiac signal that place extracts musculature neighbouring in the chambers of the heart is put, the accuracy of the intracardiac signal of extraction can be so improved.
With reference to Fig. 5, the outer surface that point electrode 180 is exposed is that (such as point electrode 180 is hemispherical or ellipsoid to curved surface Shape structure), i.e. the outer surface of point electrode 180 can have certain radian.Herein, the outer surface that point electrode 180 is exposed refers to Point electrode 180 away from it is described can curved segment outer surface one side.In operation, the outer surface of point electrode 180 close to musculature, Contact area is bigger.
Embodiment three
With reference to Fig. 9, Fig. 9 is the tip electrode of the radio frequency ablation catheter in embodiment three and the main view of partial adjustable curved segment Figure.The difference of the radio frequency ablation catheter of the present embodiment and the radio frequency ablation catheter in embodiment one is, only a pair of ring electrodes 120, and the ring electrode 120 is sheathed in the adjustable curved segment 130.It is preferred that, make the extraction point of intracardiac signal close to head Electrode, that is to say, that close to ablation target spot, the accuracy and reliability of intracardiac signal extraction can be improved.
Example IV
With reference to Figure 10, Figure 10 is the tip electrode of the radio frequency ablation catheter in example IV and the main view of partial adjustable curved segment Figure, the difference of the radio frequency ablation catheter and the radio frequency ablation catheter in embodiment one of the present embodiment is there are a pair of point electrodes 180 With a pair of ring electrodes 120, it may be contained within the adjustable curved segment 130.
Embodiment five
The present embodiment and the difference of embodiment one are that the radio frequency ablation catheter only includes point electrode, and point electrode is equal It is arranged in adjustable curved segment, any two point electrode is matched for extracting intracardiac signal.
Radio frequency ablation catheter in any of the above-described embodiment can be integrated into electrocardiograph monitoring device and radio-frequency power supply to be penetrated Frequency ablation system, when second wire of the radio frequency ablation catheter disconnects with the radio-frequency power supply, second wire Electrically connected with the electrocardiosignal monitoring device, when second wire and the radio-frequency power supply of the radio frequency ablation catheter connect When logical, second wire disconnects with the electrocardiosignal monitoring device;First wire is supervised with the electrocardiosignal all the time Device electrical connection is surveyed, here is omitted.
It should be noted that the embodiment of each in this specification is described by the way of progressive, each embodiment emphasis is said Bright be all between the difference with other embodiment, each embodiment identical similar portion mutually referring to.
In addition, " near-end " and " distal end " in above-described embodiment is relative from the point of view of doctor's angle using the medicine equipment In mutual element or the relative bearing of action, relative position, direction, although " near-end " and " distal end " is not restricted, But " near-end " is often referred to the Medical Devices in course of normal operation close to one end of doctor, and " distal end " is typically referred to first One end into patient's body.In addition, the term "or" in above-described embodiment is typically to be carried out with the implication including "and/or" Use, except explicitly pointing out in addition.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair Any change, modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims Scope.

Claims (13)

1. a kind of radio frequency ablation catheter, including tip electrode, it is characterised in that also including at least one pair of signal extraction electrode, at least A pair of first wires, and the second wire;Wherein, the two signal extraction electrodes and each pair in signal extraction electrode described in each pair Two first wires in first wire are electrically connected, and signal extraction electrode described in each pair is used to extract the first intracardiac letter Number, the first wire described in each pair is used to transmit the described first intracardiac signal;The tip electrode is electrically connected with second wire, institute State tip electrode and be alternatively used for transmitting RF energy or for extracting the second intracardiac signal, second wire is optionally For transmitting the RF energy or the second intracardiac signal.
2. radio frequency ablation catheter as claimed in claim 1, it is characterised in that at least one pair of described signal extraction electrode extremely A few electrode is nested electrode, and the nested electrode sleeve is on the tip electrode, the nested electrode and the tip electrode Between filled with the first insulating barrier to isolate the tip electrode and the nested electrode.
3. radio frequency ablation catheter as claimed in claim 2, it is characterised in that the tip electrode have an inner chamber, an outer wall with And the first through hole through the outer wall to be connected with the inner chamber, first wire through the inner chamber and it is described first lead to Hole is electrically connected with the nested electrode.
4. radio frequency ablation catheter as claimed in claim 3, it is characterised in that the radio frequency ablation catheter also includes a pillar, The pillar is located in the first through hole, and the protective pipe sleeve passes through the part of the first through hole located at first wire On.
5. radio frequency ablation catheter as claimed in claim 4, it is characterised in that the nested electrode is ring electrode.
6. radio frequency ablation catheter as claimed in claim 5, it is characterised in that at least one is offered on the outer surface of the outer wall A ring electrode is provided with individual annular groove, each annular groove, and the outer surface of the ring electrode is not less than The outer surface of the outer wall.
7. radio frequency ablation catheter as claimed in claim 6, it is characterised in that the interior intracavitary of the tip electrode is exhausted filled with second Edge layer is to isolate first wire and second wire.
8. radio frequency ablation catheter as claimed in claim 7, it is characterised in that first insulating barrier and the second insulating barrier are exhausted Electric adiabatic glue.
9. radio frequency ablation catheter as claimed in claim 1, it is characterised in that including two pairs of signal extraction electrodes, wherein Signal extraction electrode described in a pair is point electrode.
10. radio frequency ablation catheter as claimed in claim 9, it is characterised in that the radio frequency ablation catheter also includes adjustable bending Section, the distal end of the adjustable curved segment is connected with the tip electrode, and the point electrode is fastened in the adjustable curved segment.
11. radio frequency ablation catheter as claimed in claim 10, it is characterised in that the adjustable curved segment is in a tubular form, described adjustable At least two second through holes are offered on the tube wall of curved segment, a point electrode are provided with each second through hole, often The individual point electrode includes head, bar portion and the fixed part for extracting the first intracardiac signal, and the bar portion runs through described second Through hole, one end of the bar portion is fixedly connected with the head, and the other end of the bar portion is fixedly connected with the fixed part, and The head is stuck in the outside of the tube wall, and the fixed part is stuck in the inner side of the tube wall.
12. radio frequency ablation catheter as claimed in claim 11, it is characterised in that the fixed part is cone or round platform, One end that the fixed part is connected with the other end of the bar portion is the bottom surface of cone, or is the larger bottom of round platform area Face.
13. a kind of radio frequency ablation system, it is characterised in that disappear including the radio frequency as described in any one of claim 1~12 Melt conduit, electrocardiosignal monitoring device and radio-frequency power supply, when second wire of the radio frequency ablation catheter is penetrated with described When frequency power disconnects, second wire is electrically connected with the electrocardiosignal monitoring device, when the institute of the radio frequency ablation catheter When stating the second wire and being connected with the radio-frequency power supply, second wire disconnects with the electrocardiosignal monitoring device;Described One wire is electrically connected with the electrocardiosignal monitoring device all the time.
CN201710527280.5A 2017-06-30 2017-06-30 A kind of radio frequency ablation catheter and radio frequency ablation system Pending CN107260297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710527280.5A CN107260297A (en) 2017-06-30 2017-06-30 A kind of radio frequency ablation catheter and radio frequency ablation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710527280.5A CN107260297A (en) 2017-06-30 2017-06-30 A kind of radio frequency ablation catheter and radio frequency ablation system

Publications (1)

Publication Number Publication Date
CN107260297A true CN107260297A (en) 2017-10-20

Family

ID=60071130

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710527280.5A Pending CN107260297A (en) 2017-06-30 2017-06-30 A kind of radio frequency ablation catheter and radio frequency ablation system

Country Status (1)

Country Link
CN (1) CN107260297A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107752983A (en) * 2017-11-14 2018-03-06 重庆金山医疗器械有限公司 A kind of new medical pH electrode catheters
CN108596132A (en) * 2018-04-28 2018-09-28 上海微创电生理医疗科技股份有限公司 Ablation stove evaluation method and system
CN109692038A (en) * 2017-10-23 2019-04-30 瓦斯科医疗有限责任公司 Ablation catheter and its manufacturing method with microelectrode
CN110575249A (en) * 2019-09-30 2019-12-17 科塞尔医疗科技(苏州)有限公司 Electrophysiology catheter and preparation method thereof
CN110974411A (en) * 2019-12-20 2020-04-10 北京先瑞达医疗科技有限公司 Hollow organ radio frequency ablation catheter probe
CN111772784A (en) * 2020-08-24 2020-10-16 龙德勇 Ablation device
CN113040897A (en) * 2019-12-26 2021-06-29 上海微创电生理医疗科技股份有限公司 Medical intervention formula pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5849028A (en) * 1997-05-16 1998-12-15 Irvine Biomedical, Inc. Catheter and method for radiofrequency ablation of cardiac tissue
US5954665A (en) * 1995-06-07 1999-09-21 Biosense, Inc. Cardiac ablation catheter using correlation measure
US20010031942A1 (en) * 2000-02-25 2001-10-18 Thomas Tollner Ablation catheter for the generation of linear lesions in the myocardium
CN204600668U (en) * 2015-03-19 2015-09-02 上海微创电生理医疗科技有限公司 A kind of modular catheter and adopt the radio frequency ablation catheter of this handle
WO2016182876A1 (en) * 2015-05-11 2016-11-17 St. Jude Medical, Cardiology Division, Inc. High density mapping and ablation catheter
CN208274614U (en) * 2017-06-30 2018-12-25 上海微创电生理医疗科技股份有限公司 A kind of radio frequency ablation catheter and radio frequency ablation system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954665A (en) * 1995-06-07 1999-09-21 Biosense, Inc. Cardiac ablation catheter using correlation measure
US5849028A (en) * 1997-05-16 1998-12-15 Irvine Biomedical, Inc. Catheter and method for radiofrequency ablation of cardiac tissue
US20010031942A1 (en) * 2000-02-25 2001-10-18 Thomas Tollner Ablation catheter for the generation of linear lesions in the myocardium
CN204600668U (en) * 2015-03-19 2015-09-02 上海微创电生理医疗科技有限公司 A kind of modular catheter and adopt the radio frequency ablation catheter of this handle
WO2016182876A1 (en) * 2015-05-11 2016-11-17 St. Jude Medical, Cardiology Division, Inc. High density mapping and ablation catheter
CN208274614U (en) * 2017-06-30 2018-12-25 上海微创电生理医疗科技股份有限公司 A kind of radio frequency ablation catheter and radio frequency ablation system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109692038A (en) * 2017-10-23 2019-04-30 瓦斯科医疗有限责任公司 Ablation catheter and its manufacturing method with microelectrode
CN107752983A (en) * 2017-11-14 2018-03-06 重庆金山医疗器械有限公司 A kind of new medical pH electrode catheters
CN108596132A (en) * 2018-04-28 2018-09-28 上海微创电生理医疗科技股份有限公司 Ablation stove evaluation method and system
CN110575249A (en) * 2019-09-30 2019-12-17 科塞尔医疗科技(苏州)有限公司 Electrophysiology catheter and preparation method thereof
CN110575249B (en) * 2019-09-30 2021-03-02 科塞尔医疗科技(苏州)有限公司 Electrophysiology catheter and preparation method thereof
CN110974411A (en) * 2019-12-20 2020-04-10 北京先瑞达医疗科技有限公司 Hollow organ radio frequency ablation catheter probe
CN113040897A (en) * 2019-12-26 2021-06-29 上海微创电生理医疗科技股份有限公司 Medical intervention formula pipe
CN113040897B (en) * 2019-12-26 2022-07-26 上海微创电生理医疗科技股份有限公司 Medical intervention formula pipe
CN111772784A (en) * 2020-08-24 2020-10-16 龙德勇 Ablation device

Similar Documents

Publication Publication Date Title
CN107260297A (en) A kind of radio frequency ablation catheter and radio frequency ablation system
US12042218B2 (en) Pulmonary vein isolation balloon catheter
EP3534816B1 (en) Pulmonary vein isolation balloon catheter
US10973572B2 (en) Catheter for treatment of atrial flutter having single action dual deflection mechanism
US8945116B2 (en) Mapping and ablation method for the treatment of ventricular tachycardia
US6755790B2 (en) Transseptal access tissue thickness sensing dilator devices and methods for fabricating and using same
CN105592778B (en) High-resolution cardiac mapping electrod-array conduit
US9149198B2 (en) Multi-array monophasic potential medical device
IL271651A (en) Catheter adapted for direct tissue contact
US7846157B2 (en) Method and apparatus for control of ablation energy and electrogram acquisition through multiple common electrodes in an electrophysiology catheter
JP2019213970A (en) Ablation catheter with dedicated fluid paths and needle centering insert
US6231570B1 (en) Electrode catheter system for tissue ablation
US5891137A (en) Catheter system having a tip with fixation means
US5876399A (en) Catheter system and methods thereof
US6029091A (en) Catheter system having lattice electrodes
CN106535982B (en) Medical Devices for fluid communication
US20090157068A1 (en) Intraoperative electrical conduction mapping system
US20060089637A1 (en) Ablation catheter
JP2008206994A (en) Hollow coaxial cable device adapted for ablation of living tissue by conducting radio frequency energy
CN112638300B (en) Ablation lesion device
EP3095404A1 (en) Catheter with anchoring balloon assembly
CN208274614U (en) A kind of radio frequency ablation catheter and radio frequency ablation system
WO2007059361A1 (en) Endocardial electrophysiology device and method

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20171020