CN107961071A - A kind of radio frequency ablation catheter - Google Patents
A kind of radio frequency ablation catheter Download PDFInfo
- Publication number
- CN107961071A CN107961071A CN201810007690.1A CN201810007690A CN107961071A CN 107961071 A CN107961071 A CN 107961071A CN 201810007690 A CN201810007690 A CN 201810007690A CN 107961071 A CN107961071 A CN 107961071A
- Authority
- CN
- China
- Prior art keywords
- ablating electrode
- radio frequency
- ablation catheter
- frequency ablation
- swan
- 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
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Classifications
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- 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
- 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
- A61B18/14—Probes or electrodes therefor
-
- 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
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- 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
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00821—Temperature measured by a thermocouple
-
- 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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1435—Spiral
Abstract
This application provides a kind of radio frequency ablation catheter, the conduit includes ablating electrode, be connected with the near-end of ablating electrode being capable of curved swan-neck, it is provided with the swan-neck using being capable of curved two connecting sleeves made of flexible material, the distal end of connecting sleeve described in two is respectively communicated with the liquid input section for being useful for conveying coolant and output coolant goes out liquid section, and the liquid input section and the distal end for going out liquid section be connected with ablating electrode.Swan-neck is made using flexible flexible material, and since the application is by two connecting sleeves transmission coolants, and connecting sleeve is also to be made using flexible material, and therefore, swan-neck is integrally flexible.A kind of radio frequency ablation catheter described herein, has preferable flexible.For patient in radiofrequency ablation procedures, flexible ablating electrode can preferably be bonded diseased region, and smaller to diseased region pressing force, reduce the risk of surgical procedure middle punch.
Description
Technical field
This application involves a kind of radio frequency ablation catheter.
Background technology
Radio frequency ablation catheter is one kind of electrophysiologicalcatheter catheter, is mainly used for openheart surgery, also begins to be applied to height in recent years
The treatment of blood pressure.
In operation, radio frequency ablation catheter percutaneous puncture is transported to diseased region, is now placed in the ablating electrode of distal end of catheter
Circuit is formed with the electrode at patient back.By ablating electrode by the transmission of radio-frequency energy of transmitting to pathological tissues, make its part
Necrosis, the electrical conduction at blocking lesion position, so as to fulfill treatment tachyarrhythmia or treatment hypertension the purpose of.
Meanwhile it can disappear in ablation procedure in order to reach deeper ablation temperature while RF ablation in radio frequency
Melt and cool brine is uniformly sprayed around electrode, carry out the cooling on surface, can so reach deeper depth of ablation and alleviate at the same time
The temperature of radio-frequency ablation electrode, so that while ensureing therapeutic effect, is also prevented from targeting moiety surface and forms localized hyperthermia,
Incrustation and thrombosed probability are reduced, improves the safety and validity of operation.(CN 103371865 A)
Cold brine perfusion ablating electrode generally uses tubular structure, and pipe is equipped with some cold brine perfusion holes, carries out cold salt
Perfusion, the sprinkling of water, material therefor is platinumiridio, and this kind of ablating electrode is rigid structure, and intensity is high, flexible poor.
The cold brine perfusion ablation catheter of the prior art, while RF ablation, around radio-frequency ablation electrode
Even sprinkling cool brine, carries out the cooling on surface, can due to constantly give patient convey physiological saline, a series of complication can be triggered,
This can cause damage to patient；Meanwhile such ablating electrode is rigid structure, intensity is high, flexible poor, and ablation time is more
It is long so that cardiovascular perforation is likely to cause in ablation procedure, can also cause greatly to damage to patient.
Apply for content
It is flexible poor that the application technical problems to be solved are to provide a kind of cool brine ablating electrode for solving the prior art
Radio frequency ablation catheter.
In order to solve the above-mentioned technical problem, this application provides a kind of radio frequency ablation catheter, the conduit to include ablation
Electrode, be connected with the near-end of ablating electrode can curved swan-neck, be provided with using flexible material in the swan-neck
It is manufactured can curved two connecting sleeves, the distal end of the connecting sleeve described in two be respectively communicated with is useful for conveying coolant
Liquid input section and output coolant go out liquid section, the liquid input section and the distal end for going out liquid section be connected with ablating electrode
It is logical.Swan-neck is made using flexible flexible material, since the application is by two connecting sleeves transmission coolants, and is connected
Casing is also to be made using flexible material, and therefore, swan-neck is integrally flexible.
Preferably, the distal end of the connecting sleeve described in two is set close to the ablating electrode.As long as in connecting sleeve
Distal end connection liquid input section and go out liquid section and can complete the conveying of coolant, coolant enters from one of connecting sleeve successively
Liquid input section, then cools down by ablating electrode, is discharged from liquid section and another connecting sleeve is gone out.Coolant preferably makes
Use cool brine.
Preferably, the intersection of the ablating electrode and swan-neck also has one to be used for ablating electrode and bending tube cavity
The adhesive surface being mutually separated, the liquid input section and the liquid section that goes out are connected through the adhesive surface with ablating electrode.It is viscous
Junction, for the division surface of sealing, swan-neck and ablating electrode is sealed against each other to be formed after glue curing.
Preferably, some ring electrodes are arranged with outside the swan-neck.
Preferably, the ablating electrode is helical tubular structure, is gradually subtracted in the diameter of the distal end convolutions pipe of ablating electrode
It is few, seamlessly transit to the endpoint of distal end.The structure of the ablating electrode is similar to spring, can have preferable soft with flexural deformation
Property.For patient in radiofrequency ablation procedures, flexible ablating electrode can preferably be bonded diseased region, and to diseased region pressing force compared with
It is small, reduce the risk of surgical procedure middle punch.
Preferably, the ablating electrode is made of platinumiridio or stainless steel or nickel-titanium alloy material.
Preferably, the connecting sleeve can use PA or PTFE or PI materials to be made.
Preferably, a temperature sensor for being used for measurement temperature is fixed with the adhesive surface, on temperature sensor
It is connected with temperature lead.Temperature sensor carries out thermometric by thermocouple, and temperature sensor and temperature lead are thermocouple wire,
Temperature survey is carried out by temperature sensor, can more accurately carry out RF ablation.
Preferably, a bracing wire for being used for stretch bending pipe is fixed with the adhesive surface.The near-end of bracing wire extends to
Outside swan-neck, patient can change the curvature of ablation catheter by pulling bracing wire.
Preferably, it is additionally provided with the conducting wire of transmission of radio-frequency energy to ablating electrode on the ablating electrode.
A kind of radio frequency ablation catheter described herein, has preferable flexible.Patient is flexible in radiofrequency ablation procedures
Ablating electrode can preferably be bonded diseased region, and smaller to diseased region pressing force, reduce the wind of surgical procedure middle punch
Danger.The bolt tube of ablating electrode can transmit coolant, cooled down by coolant to electrode surface, avoid diseased region tissue mistake
Heat, causes the incrustation of the tissue.Contact of the coolant with pathological tissues is avoided at the same time, reduces the risk for causing complication.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of radio frequency ablation catheter of the application；
Fig. 2 is the cross-sectional view of the application radio frequency ablation catheter；
Fig. 3 is the structure diagram of the application radio frequency ablation catheter bending,
Wherein：10th, ablating electrode；20th, swan-neck；30th, ring electrode；11st, liquid input section；12nd, liquid section is gone out；21st, temperature sensing
Device；22nd, temperature lead；23rd, connecting sleeve；24th, bracing wire；25th, conducting wire；26th, adhesive surface.
Embodiment
The application is described further with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
More fully understand the application and can be practiced, but illustrated embodiment is not as the restriction to the application.
As shown in the figure, being the radio frequency ablation catheter of the application, the conduit includes ablating electrode 10 and ablating electrode 10
Near-end be connected can curved swan-neck 20, be provided with the swan-neck 20 using can be curved made of flexible material
Two bent connecting sleeves 23, the distal end of the connecting sleeve 23 described in two are respectively communicated with the liquid input section for being useful for conveying coolant
11 and output coolant go out liquid section 12, the liquid input section 11 and the distal end for going out liquid section 12 be connected with ablating electrode 10
It is logical.Swan-neck 20 is made using flexible flexible material, since the application is by two transmission coolants of connecting sleeves 23, and
Connecting sleeve 23 is also to be made using flexible material, and therefore, swan-neck 20 is overall flexible.Connecting sleeve 23 described in two
Distal end is set close to the ablating electrode 10.As long as liquid input section 11 is connected in the distal end of connecting sleeve 23 and goes out liquid section 12
The conveying of coolant is completed, coolant enters liquid input section 11 from one of connecting sleeve 23 successively, then by ablating electrode
10 cool down, and are discharged from liquid section 12 and another connecting sleeve 23 is gone out.Cool brine is preferably used in coolant.Described disappears
The intersection for melting electrode 10 and swan-neck 20 also has an adhesive surface for being used to ablating electrode 10 and 20 inner cavity of swan-neck being mutually separated
26, the liquid input section 11 and the liquid section 12 that goes out are connected through the adhesive surface 26 with ablating electrode 10.Adhesive surface
26, to be formed after glue curing, for the division surface of sealing, swan-neck 20 and ablating electrode 10 are sealed against each other.The swan-neck
Some ring electrodes 30 are arranged with outside 20.The ablating electrode 10 is helical tubular structure, in the distal end convolutions pipe of ablating electrode 10
Diameter gradually decrease, seamlessly transit to the endpoint of distal end.The structure of the ablating electrode 10 is similar to spring, can bend change
Shape, has preferable flexible.For patient in radiofrequency ablation procedures, flexible ablating electrode 10 can preferably be bonded diseased region, and
It is smaller to diseased region pressing force, reduce the risk of surgical procedure middle punch.The ablating electrode 10 uses platinumiridio
Or stainless steel or nickel-titanium alloy material are made.The connecting sleeve 23 can use PA or PTFE or PI materials to be made.Described
A temperature sensor 21 for being used for measurement temperature is fixed with adhesive surface 26, temperature lead is connected with temperature sensor 21
22.Temperature sensor 21 carries out thermometric by thermocouple, and temperature sensor 21 and temperature lead 22 are thermocouple wire, pass through temperature
Spend sensor 21 and carry out temperature survey, can more accurately carry out RF ablation.A use is fixed with the adhesive surface 26
In the bracing wire 24 of stretch bending pipe 20.The near-end of bracing wire 24 is extended to outside swan-neck 20, and patient can be changed by pulling bracing wire 24
Become the curvature of ablation catheter.The conducting wire to ablating electrode 10 by transmission of radio-frequency energy is additionally provided with the ablating electrode 10
25。
A kind of radio frequency ablation catheter described herein, using helical tubular structure, which is similar to spring, can be curved
Song deformation, has preferable flexible.For patient in radiofrequency ablation procedures, flexible ablating electrode 10 can preferably be bonded lesion
Position, and it is smaller to diseased region pressing force, reduce the risk of surgical procedure middle punch.The bolt tube of ablating electrode 10 can be transmitted
Coolant, cools down electrode surface by coolant, avoids diseased region tissue overheating, cause the incrustation of the tissue.At the same time
Contact of the coolant with pathological tissues is avoided, reduces the risk for causing complication.
In this application, it is specified that one end close to patient in surgical procedure is near-end, one end away from patient is distal end.
Embodiment described above is only the preferred embodiment to absolutely prove the application and being lifted, the protection model of the application
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the application, in the application
Protection domain within.The protection domain of the application is subject to claims.
Claims (10)
1. a kind of radio frequency ablation catheter, it is characterised in that the conduit includes ablating electrode, is connected with the near-end of ablating electrode
Can curved swan-neck, be provided with the swan-neck using being capable of curved two connector sleeves made of flexible material
Pipe, the distal end of the connecting sleeve described in two is respectively communicated with the liquid input section for being useful for conveying coolant and output coolant goes out liquid
Section, the liquid input section and the distal end for going out liquid section are connected with ablating electrode.
2. a kind of radio frequency ablation catheter as claimed in claim 1, it is characterised in that the distal end of the connecting sleeve described in two is leaned on
The nearly ablating electrode is set.
A kind of 3. radio frequency ablation catheter as claimed in claim 1, it is characterised in that the friendship of the ablating electrode and swan-neck
Also have one to be used for ablating electrode and the adhesive surface that is mutually separated of bending tube cavity at boundary, the liquid input section and described go out liquid section
It is connected through the adhesive surface with ablating electrode.
4. a kind of radio frequency ablation catheter as claimed in claim 1, it is characterised in that be arranged with some rings outside the swan-neck
Electrode.
5. a kind of radio frequency ablation catheter as claimed in claim 1, it is characterised in that the ablating electrode is helix knot
Structure, gradually decreases in the diameter of the distal end convolutions pipe of ablating electrode, seamlessly transits to the endpoint of distal end.
6. a kind of radio frequency ablation catheter as claimed in claim 1, it is characterised in that the ablating electrode uses platinumiridio
Or stainless steel or nickel-titanium alloy material are made.
A kind of 7. radio frequency ablation catheter as claimed in claim 1, it is characterised in that the connecting sleeve can use PA or
PTFE or PI materials are made.
8. a kind of radio frequency ablation catheter as claimed in claim 3 a, it is characterised in that use is fixed with the adhesive surface
In being connected with temperature lead on the temperature sensor of measurement temperature, temperature sensor.
9. a kind of radio frequency ablation catheter as claimed in claim 3 a, it is characterised in that use is fixed with the adhesive surface
In the bracing wire of stretch bending pipe.
A kind of 10. radio frequency ablation catheter as claimed in claim 3, it is characterised in that be additionally provided with the ablating electrode by
Transmission of radio-frequency energy to ablating electrode conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007690.1A CN107961071A (en) | 2018-01-04 | 2018-01-04 | A kind of radio frequency ablation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810007690.1A CN107961071A (en) | 2018-01-04 | 2018-01-04 | A kind of radio frequency ablation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107961071A true CN107961071A (en) | 2018-04-27 |
Family
ID=61994074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810007690.1A Pending CN107961071A (en) | 2018-01-04 | 2018-01-04 | A kind of radio frequency ablation catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107961071A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620398A (en) * | 2019-02-01 | 2019-04-16 | 科塞尔医疗科技（苏州）有限公司 | Ablating electrode and the conduit cooperated with the ablating electrode |
| CN110074861A (en) * | 2018-09-14 | 2019-08-02 | 杭州堃博生物科技有限公司 | Radio frequency ablation catheter, lung's radio frequency ablation system and corresponding control method, control device and computer readable storage medium |
| CN112294429A (en) * | 2020-09-17 | 2021-02-02 | 杭州堃博生物科技有限公司 | Electric knife |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631240A (en) * | 2012-04-13 | 2012-08-15 | 上海微创电生理医疗科技有限公司 | Cold brine infusion type radiofrequency ablation catheter |
| CN103284785A (en) * | 2012-02-29 | 2013-09-11 | 四川锦江电子科技有限公司 | Refrigeration electrophysiologic electrode |
| WO2013139178A1 (en) * | 2012-03-23 | 2013-09-26 | 心诺普医疗技术（北京）有限公司 | Ablation electrode and perfusion electrode catheter using same |
| CN103919606A (en) * | 2014-04-14 | 2014-07-16 | 乐普（北京）医疗器械股份有限公司 | Magnetic-navigation cold saline perfusion radiofrequency ablation catheter |
-
2018
- 2018-01-04 CN CN201810007690.1A patent/CN107961071A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103284785A (en) * | 2012-02-29 | 2013-09-11 | 四川锦江电子科技有限公司 | Refrigeration electrophysiologic electrode |
| WO2013139178A1 (en) * | 2012-03-23 | 2013-09-26 | 心诺普医疗技术（北京）有限公司 | Ablation electrode and perfusion electrode catheter using same |
| CN102631240A (en) * | 2012-04-13 | 2012-08-15 | 上海微创电生理医疗科技有限公司 | Cold brine infusion type radiofrequency ablation catheter |
| CN103919606A (en) * | 2014-04-14 | 2014-07-16 | 乐普（北京）医疗器械股份有限公司 | Magnetic-navigation cold saline perfusion radiofrequency ablation catheter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074861A (en) * | 2018-09-14 | 2019-08-02 | 杭州堃博生物科技有限公司 | Radio frequency ablation catheter, lung's radio frequency ablation system and corresponding control method, control device and computer readable storage medium |
| CN109620398A (en) * | 2019-02-01 | 2019-04-16 | 科塞尔医疗科技（苏州）有限公司 | Ablating electrode and the conduit cooperated with the ablating electrode |
| CN109620398B (en) * | 2019-02-01 | 2024-02-09 | 科塞尔医疗科技（苏州）有限公司 | Ablation electrode and catheter matched with same |
| CN112294429A (en) * | 2020-09-17 | 2021-02-02 | 杭州堃博生物科技有限公司 | Electric knife |
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