CN106963486A - A kind of esophageal regurgitation radio-frequency ablation electrode - Google Patents
A kind of esophageal regurgitation radio-frequency ablation electrode Download PDFInfo
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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
- 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
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00482—Digestive system
- A61B2018/00488—Esophagus
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00797—Temperature measured by multiple temperature sensors
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00821—Temperature measured by a thermocouple
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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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
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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
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1417—Ball
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
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Abstract
A kind of esophageal regurgitation radio-frequency ablation electrode, including electrode bundle（1）, electrode cap（2）, electrode tip holder（3）, center pull rod（4）, conduit（5）, handle（6）, knob（7）, cable（8）, plug（9）, water-filling nozzle（10）Water injection pipe（11）And flexible pipe（12）.The electrode bundle（1）Can flare up olive shape, be provided with conduction region at the olivary section maximum gauge, the other parts of esophageal regurgitation radio-frequency ablation electrode are both provided with insulating barrier.The electrode bundle（1）It is made up of conductive metal capillary, the metal capillary, which is divided into some groups, and each group, has at least one piece to be used to flow through for coolant.The electrode of the present invention can easily and accurately implement radiofrequency ablation therapy to esophagus annular section and implement cooling, simultaneously because electrode bundle is olive-shaped structure, coolant can be flowed into stomach easily, so as to avoid using coolant during sacculus from esophagus to the risk of pharyngeal outflow suction tracheae.
Description
Technical field
The present invention relates to a kind of esophageal regurgitation radio-frequency ablation electrode, more particularly to one kind can be with endoscope partner treatment esophagus
The radio-frequency ablation electrode of reflux.
Background technology
GERD (gastroesophageal reflux disease, GERD), refers to stomach oesophagus chamber because excessively
Contact（Or exposure）In the general name of gastroesophageal reflux caused by gastric juice and Esophageal Mucosa damage disease；Refer to Stomach duodenum
Content reflux enter oesophagus cause clinical symptoms and（Or）A kind of disease of esophagitis.If reflux owner hydrochloric acid in gastric juice, stomach cardia
Enzyme, still has duodenal juice, cholic acid, pancreatic juice etc., the former is clinically common, and the latter is mainly seen in Partial gestrectomy, stomach
After entero-anastomosis, esophago-enterostomy it is postoperative.Gastroesophageal reflux and its complication are multifactor, including oesophagus sheet
The defect of body anti-reflux mechanism, such as inferior esophageal sphincter dysfunction and esophageal body dyskinesia；Also have many outside oesophagus
Dysfunction of mechanical factor etc..
GERD patient has point of physiological and pathologic, and pathologic gastroesophageal reflux, the lighter causes uncomfortable, vomiting, severe one
Esophagitis and lung's aspiration syndrome, or even death by suffocation can then be caused.
GERD can have a strong impact on patients ' life quality.In recent years, Asian-Pacific area GERD is in obvious
Ascendant trend.GERD is very common in western countries, and about 7%-15% has gastroesophageal reflux symptom in crowd, morbidity
Increase with the age and increase, 40-60 Sui is peak age of onset, and men and women's morbidity indifference, majority report is thought, reflux oesophagus
In scorching patient, male patient is significantly more than women.Investigation shows that the ratio between its men and women's incidence of disease is 2.4：1.Compared with western countries,
GERD is relatively low in China's incidence of disease, and the state of an illness is also lighter.
The inflammatory disorderses such as mucous membrane of esophagus erosion, ulcer are about seen under half gastroesophageal reflux disease scope, claim reflux food
Guan Yan；But it can be showed below considerable part gastroesophageal reflux disease scope without reflux esophagitis, this kind of GERD
The referred to as GERD of endoscopy-negative.
Current GERD mainly has three kinds of therapeutic modalities：（1）Drug therapy is GERD primary treatments, but it is difficult to tie up
Hold long-term efficacy；（2）Fundoplication is invasive surgery, the obvious dysphagia of some patientss complicated by postoperative or abdominal distension；（3）Food
Pipe lower end sphincter RF therapy is treated for endoscopic minimally-invasive, and a large amount of clinical proof special late results of its curative effect are satisfactory.
What it is currently used for clinical practice is to introduce U.S. Cuyroin Medical, Inc Products Stretta treatments
Instrument, by endoscopic measurement dentate line away from front tooth distance.Stretta seal wires are introduced to duodenum by gastroscopic biopsy duct, removed
Go out gastroscope, Stretta conduits are introduced into oesophagus along seal wire, seal wire is withdrawn from.Respectively at 1cm, 0.5cm, dentate line, tooth on dentate line
0.5cm under shape line, with the air bag of syringe gas injection dilating catheter front end to appropriate pressure, promotes swashing for Stretta catheter tips
Transmitting apparatus, makes 4 electrode needles on air bag outer basket insert esophageal wall muscle layer, the screen display resistance of Stretta systems is rapid
Decline.After confirming that resistance and temperature are normal, start treatment once in 60 seconds, each position is treated twice in 0 °, 45 ° of dextrorotation；
It is pushed into again in catheter air bag to stomach, respectively at after gas injection 25ml and 22ml in air bag at outer pull catheter to appropriate resistance, Mei Geping
Treated three times respectively in 0 °, 30 ° of dextrorotation, left-handed 30 ° in face.It is flat that some cases increase by 2 treatments in 1.5cm, 2cm on dentate line
Face, treats common 6-8 plane, 56-72 point.Tissue resistance is no more than 1000 ohm, muscle layer temperature 80-90 in therapeutic process
DEG C, mucous membrane surface temperature is no more than 50 DEG C.Mucous membrane surface carries out cooling protection by precooling water carriage system.As temperature or resistance are super
Normal range (NR) is crossed, then is automatically stopped treatment.
This radio-frequency ablation electrode needle of current clinical practice is inserted electrode needle by radiofrequency ablation therapy using air bag
Tissue, can be cooled down, the cooling water in esophagus may be to pharynx while treatment esophageall obstruetion, and by the way of bath
Portion flows out, and has the risk for being inhaled by a patient tracheae.
The content of the invention
For above problems of the prior art, it can coordinate it is an object of the invention to provide one kind with endoscope
The olive shape radio-frequency ablation electrode used, with soft, elongated conduit, and the conduit length in olive shape electrode needle exhibition
During opening or withdrawing, its length keeps constant.
Technical scheme is as follows.
A kind of esophageal regurgitation radio-frequency ablation electrode, including electrode bundle, electrode cap, electrode tip holder, conduit, wherein：
The electrode bundle is expandable at olive shape, the olivary section maximum gauge and is provided with conduction region；
The olivary other parts, and electrode cap, electrode tip holder and catheter outer surface are provided with insulating coating；
The electrode bundle is made up of conductive metal capillary, and the metal capillary is divided into some groups；The metal capillary
Each group in there is at least one piece to be used to flow through for coolant.
Preferably, every group of the metal capillary is 2-3 pieces.
Preferably, the section of the metal capillary is rectangle.
Preferably, have in every group of the metal capillary at least one piece uncoated place pipe in have temperature thermocouple and without
Flowed through in for coolant, the lead of the temperature thermocouple passes through cable connection to plug.
Preferably, in addition to water-filling nozzle, water injection pipe and flexible pipe, coolant can by liquid injecting mouth, liquid injection pipe, electrode tip holder,
Electrode bundle, electrode cap and flexible pipe outflow.
Preferably, in addition to center pull rod；The electrode bundle includes being located at the distal end of the electrode cap side, and close
The near-end of the conduit；The distal end of the electrode bundle is connected with the distal end of electrode cap and center pull rod, the electrode bundle it is near
End is connected with the distal end of the conduit；The center pull rod can electrode tip holder and conduit central slide so that the center
Moved towards the distal end of the conduit distal end of pull bar.
Preferably, the near-end of the center pull rod is connected with the distal end of the central metal pipe in the conduit；The center
The first bolt connection in the near-end and handle of metal tube；First bolt is matched somebody with somebody with being consolidated with the first nut of first bevel gear
Close, second bevel gear is connected with knob, and is engaged with the first bevel gear.
Preferably, first bolt is coordinated with first nut by the screw thread of energy self-locking.
Preferably, the length of the conduit is 60-120cm.
Preferably, the diameter of the conduit is not more than 2.8mm.
By above technical scheme, the present invention can obtain following technique effect.
Technical scheme more than, stomach esophagus radio-frequency ablation electrode of the invention can be easily and accurately to esophageal ring
Radiofrequency ablation therapy is implemented in shape region, and the capillary midpoint of the electrode bundle of olive shape electrode is installed temperature thermocouple, can supervised in real time
Survey and control ablation temperature, and when necessary by being cooled down in cooling with injection coolant in metal capillary.Meanwhile, by
It is olive-shaped structure in electrode bundle, the cold water of cooling can be flowed into stomach easily, so that cold when avoiding using sacculus
But liquid causes the risk for water of choking from esophagus to pharyngeal outflow.Further, since olive-shaped structure can make to be ablated to be organized in progress
Exposed state is remained during treatment, operator can easily observe ablation in therapeutic process is implemented
Process, and other disposal operations are rinsed etc. by gastroscope.
Brief description of the drawings
Fig. 1 is the esophageal regurgitation radio-frequency ablation electrode overall structure diagram of the present invention.
Fig. 2 is the distal portions profile of the esophageal regurgitation radio-frequency ablation electrode of the present invention.
Fig. 3 is the handle portion structural representation of the esophageal regurgitation radio-frequency ablation electrode of the present invention.
Embodiment
Term used herein " RF ablation " refers to that frequency of use height arrives certain value（>100kHz）Radio-frequency current
Bio-tissue is applied to, causes ion motion electrically charged in tissue to produce fuel factor, tissue is heated to target temperature（Example
Such as 60-100 DEG C）, so that the fire damage of tissue or meronecrosis.
As shown in Figure 1, a kind of esophageal regurgitation radio-frequency ablation electrode, including electrode bundle 1, electrode cap 2, electrode tip holder 3, center
Pull bar 4, conduit 5, handle 6, knob 7, cable 8, plug 9, water-filling nozzle 10, water injection pipe 11 and flexible pipe 12.
The electrode bundle 1, which is expandable at olive shape, the olivary maximum gauge, a bit of naked coating, its
He, which partly includes electrode cap 2, electrode tip holder 3 and conduit, insulating barrier；
The electrode bundle 1 is made up of one group of conductive metal capillary, and metal capillary is divided into some groups, and every group is 2-3
Piece, every group wherein has one piece to have temperature thermocouple in uncoated place pipe;
In one embodiment, electrode bundle 1 is constructed and arranged to RF energy being sent to the electrode of treated tissue
Structure.The electrode bundle 1 is made up of a plurality of conductive metal capillary.The wire is substantially homogeneously arranged in the circle
The side of cylindricality, and substantially with the cylindrical diameter parallel, thus RF energy can be substantially equal with appropriate intensity
Treated tissue is sent to evenly, to complete the ablation to mucosal tissue or submucosa tissue, or causes the tissue
Produce damage.Generally, the ablation in present embodiment is used to make the mucous membrane in destination organization form certain fire damage.When using
During this method, destination organization can recover because melting formed fire damage within the time of 2 to 3 days.
Generally, RF energy is applied to treated tissue in the way of the two poles of the earth from electrode bundle.
In one embodiment, the metal capillary of the electrode bundle 1 includes positive pole group and negative pole group, two groups of metal kernels
Tubule is spaced, constitutes the olive shape.
The positive pole group metal capillary is connected with the positive pole in radiofrequency ablation energy source, the negative pole group metal capillary with
The negative pole in radiofrequency ablation energy source is connected.Generally, in order to metal capillary provide radiofrequency ablation energy, can use it is single or
Many metal capillaries are to provide the radiofrequency ablation energy of certain power.
Although it will be appreciated by those skilled in the art that in the above embodiments, RF energy be by respectively with positive pole,
The metal capillary of negative pole connection, which is transferred to, is ablated to tissue, however, the invention is not limited in this.In the other of the present invention
In some embodiments, RF energy can use various mode transmission.Alternatively, RF energy can also include monopole electricity
Pole structure, the electrode bundle of the monopolar electrode structure is combined to energize with refurn electrode, and described refurn electrode is generally arranged at trouble
On person's skin.
Coolant can be used by the cooling in liquid injecting mouth 10, liquid injection pipe 11, handle 6, conduit 5, electrode tip holder 3 and electrode bundle 1
Metal capillary flows out from electrode cap 2 and flexible pipe 12.
The distal end of the center pull rod can pass through nut self-locking with being bolted together.
The electrode cap 2 is arranged at the distal side of the electrode bundle 1, so that by the metal capillary and source of radio frequency energy
Set up electrical connection.Electrode cap 2 as needed can be by being adapted to transmission radiofrequency ablation energy and the suitable material contacted with tissue
Material is made.
The electrode tip holder 3 is arranged at the proximal lateral of the electrode bundle 1, and the electrode tip holder 3 is adapted to the instrument from gastroscope used
Passed in passage.The distal side of electrode tip holder 3 and the proximal lateral of the electrode bundle 1 form and mechanically connected, the proximal lateral energy of electrode tip holder 3
It is enough to be operably connected with the insertion end of gastroscope.According to the difference of the size of the insertion end of gastroscope, the electrode tip holder 3 can be set
For different sizes.
In one embodiment, the electrode tip holder 3 is substantially tubular, its one end and the proximal lateral of the electrode bundle 1
It is fixedly connected, the internal diameter of its other end is suitable detachably connected with gastroscope distal end used external diameter.
The electrode tip holder 3 can be suitable to manufacture with the material that the insertion end of gastroscope is used cooperatively using any.It is preferred one
Embodiment in, electrode tip holder 3 can use with biocompatibility high polymer material manufacture, such as medical polyurethane plastics.
The center pull rod 4 can electrode tip holder 3 and conduit 5 central slide so that the distal end of the center pull rod 4 towards
The distal end movement of the conduit 5.
The electrode bundle 1 is included positioned at the distal end of the side of electrode cap 2, and close to the near-end of the conduit 5；It is described
The distal end of electrode bundle 1 is connected with the distal end of electrode cap 2 and center pull rod 4, the near-end of the electrode bundle 1 and the conduit 5
Distal end is connected.
The conduit 5 is soft, elongated flexible pipe, and diameter is not more than 2.8mm, therefore it can pass through various endoscopes
Working chamber reaches lesion locations.
In one embodiment, the length of the flexible pipe is 60-120cm.
Shown in Fig. 2 is by the esophageal regurgitation radio-frequency ablation electrode distal portions profile of the present invention.Olive shape electrode bundle 1
It is made up of several pieces of metal capillaries, metal capillary is divided into some groups.Every group of the metal capillary is 2-3 pieces, and every group wherein
There is one piece to have temperature thermocouple 10 in uncoated place pipe, ablation temperature can be monitored and be controlled in real time.
Central metal pipe 13 opens and retracted for driving electrodes beam 1；Drawn with center the distal end of the central metal pipe 13
The near-end of bar 4 is connected, and near-end is connected with the screw 15 in handle 6.
In A areas, electrode bundle 1 is fixed together with center pull rod 4 and electrode cap 2；The lead of the thermocouple 15 of electrode bundle
It is connected to by the inner chamber of center pull rod 4 and central metal pipe 13, cable link 17, cable 8 on plug 9.
At the maximum gauge of olive, i.e. the interlude of electrode bundle 1（B areas）Outside naked coating, esophageal regurgitation radio frequency
The other parts of ablating electrode have insulating barrier;
Injection of metallic capillary 14 links together in the C of region with center pull rod 4, liquid by injection of metallic capillary 14,
Center pull rod 4 flows out from the top of electrode cap 2.
In one embodiment, gastroscope is from the conventional endoscope that can be bought in the market, for example with electro-photographic
" the stomach endoscope " of device.Although the concrete structure for the endoscope that can commercially buy is different, as shown in Fig. 2
Most endoscopes include an elongate body extended along axis, and the main body has controllable insertion end（Distally）And operation
End（Near-end）, the operating side includes being used to be connected to the video channel on display screen and provides the internal work accessed in main body
The port of passage.As common in endoscopic arts, dial, lever or other mechanisms（Do not show）Generally set
Put on the handle for being operating side, so that operator selectively controls the distal end of endoscope.
When in use, including the ablating device of ablation structure is advanced to digestion while being supported by endoscope distal end
In road.Ablation structure can deflect towards tissue surface and can be applied in radiofrequency signal so as to ablation tissue surface.In alimentary canal
It is interior, the tissue surface sites of all size can be optionally melted using this apparatus.
Shown in Fig. 3 is the handle arrangement figure of esophageal regurgitation radio-frequency ablation electrode.
The near-end of the center pull rod 4 is connected with the distal end of the central metal pipe in the conduit 5；The central metal pipe
Near-end and handle 6 in bolt connection；The bolt and the nut cooperation for being consolidated with first bevel gear, second bevel gear and rotation
Button 7 is connected, and is engaged with the first bevel gear.
In a preferred embodiment, the bolt is coordinated with the nut by the screw thread of energy self-locking.
Because the catheter length of esophageal regurgitation radio-frequency ablation electrode is generally in 60-120cm, the working chamber of endoscope is curved again
Bent, therefore during olive shape electrode needle is deployed or withdraws, resistance is very big.Olive shape electrode needle will be led from soft, elongated
Expansion or withdrawal in the needle point of pipe distal end.When olive shape electrode needle is started to spread out, tip and pin due to olive shape electrode needle
The inwall frictional force of point makes conduit under tension；When olive shape electrode needle starts to withdraw, conduit will be by compression stress, these drawings
Power or pressure can cause catheter length to change, and catheter length, which changes, can cause electrode needle can not be fully deployed or receive
Return.Therefore need the length for making the conduit during olive shape electrode needle is deployed or withdraws, its length keeps constant.
The near-end of conduit 5 is fixedly connected with handle 6 in Fig. 3, and this structure can ensure that soft, elongated conduit 5 is drawn
When power or pressure, its length keeps constant, while olive shape electrode needle expansion withdrawal resistance is small, driving force is big.
It will be appreciated by those skilled in the art that each embodiment disclosed above can be in the situation without invention essence
Various modifications and variations are made, these modifications and variations should all be fallen under the scope of the present invention, therefore, guarantor of the invention
Shield scope will be defined by appended claims.
Claims (10)
1. a kind of esophageal regurgitation radio-frequency ablation electrode, including electrode bundle（1）, electrode cap（2）, electrode tip holder（3）, conduit（5）, its
In：
The electrode bundle（1）It is expandable at olive shape, the olivary section maximum gauge and is provided with conduction region；
The olivary other parts, and electrode cap（2）, electrode tip holder（3）And conduit（5）Outer surface is provided with insulation and applied
Layer；
Characterized in that, the electrode bundle（1）It is made up of conductive metal capillary, the metal capillary is divided into some groups；
There is at least one piece to be used to flow through for coolant in each group of the metal capillary.
2. esophageal regurgitation radio-frequency ablation electrode according to claim 1, it is characterised in that every group of the metal capillary is
2-3 pieces.
3. esophageal regurgitation radio-frequency ablation electrode according to claim 1, it is characterised in that the section of the metal capillary
For rectangle.
4. esophageal regurgitation radio-frequency ablation electrode according to claim 1, it is characterised in that in every group of the metal capillary
There is at least one piece to have temperature thermocouple in uncoated place pipe and be not used in flow through for coolant, the lead of the temperature thermocouple
Pass through cable（8）It is connected to plug（9）.
5. esophageal regurgitation radio-frequency ablation electrode according to claim 1, it is characterised in that：Also include water-filling nozzle（10）, note
Water pipe（11）And flexible pipe（12）, coolant can pass through liquid injecting mouth（10）, liquid injection pipe（11）, electrode tip holder（3）, electrode bundle（1）, electricity
Polar cap（2）And flexible pipe（12）Outflow.
6. the esophageal regurgitation radio-frequency ablation electrode according to any one of claim 1-5, it is characterised in that also including center
Pull bar（4）；The electrode bundle（1）Including positioned at the electrode cap（2）The distal end of side, and close to the conduit（5）It is near
End；The electrode bundle（1）Distal end and electrode cap（2）And center pull rod（4）Distal end be connected, the electrode bundle（1）It is near
End and the conduit（5）Distal end be connected；The center pull rod（4）Can be in electrode tip holder（3）And conduit（5）Central slide,
So that the center pull rod（4）Distal end towards the conduit（5）Distal end movement.
7. esophageal regurgitation radio-frequency ablation electrode according to claim 6, it is characterised in that the center pull rod（4）It is near
End and the conduit（5）The distal end connection of interior central metal pipe；The near-end and handle of the central metal pipe（6）Interior screw rod
Connection；The bolt and the nut cooperation for being consolidated with first bevel gear, second bevel gear and knob（7）Connection, and with described the
One bevel gear engages.
8. esophageal regurgitation radio-frequency ablation electrode according to claim 7, it is characterised in that the screw rod leads to the nut
The screw thread for crossing energy self-locking coordinates.
9. esophageal regurgitation radio-frequency ablation electrode according to claim 1, it is characterised in that the conduit（5）Length be
60-120cm。
10. esophageal regurgitation radio-frequency ablation electrode according to claim 9, it is characterised in that the conduit（5）Diameter not
More than 2.8mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361281.7A CN106963486B (en) | 2017-05-20 | 2017-05-20 | Esophagus reflux radio frequency ablation electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361281.7A CN106963486B (en) | 2017-05-20 | 2017-05-20 | Esophagus reflux radio frequency ablation electrode |
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| CN106963486B CN106963486B (en) | 2021-01-12 |
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| CN113164710A (en) * | 2018-12-20 | 2021-07-23 | 东丽株式会社 | Liquid feeding tube for esophagus and intermediate part for manufacturing liquid feeding tube for esophagus |
| CN113229786A (en) * | 2021-05-17 | 2021-08-10 | 河北地质大学 | Intraoperative endoscope self-expansion type silica gel atrium and esophagus fistula temperature measuring device |
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| Publication number | Publication date |
|---|---|
| CN106963486B (en) | 2021-01-12 |
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