CN105434040B - Endoscope-use umbrella shape radio-frequency ablation electrode needle - Google Patents
Endoscope-use umbrella shape radio-frequency ablation electrode needle Download PDFInfo
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- CN105434040B CN105434040B CN201610016343.6A CN201610016343A CN105434040B CN 105434040 B CN105434040 B CN 105434040B CN 201610016343 A CN201610016343 A CN 201610016343A CN 105434040 B CN105434040 B CN 105434040B
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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
- 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
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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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
- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
-
- 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
- A61B2018/1425—Needle
- A61B2018/143—Needle multiple needles
-
- 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
- A61B2018/1425—Needle
- A61B2018/1432—Needle curved
-
- 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
- A61B2018/1475—Electrodes retractable in or deployable from a housing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Plasma & Fusion (AREA)
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- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of endoscope-use umbrella shape radio-frequency ablation electrode needle, including handle（5）, conduit（3）, needle point（2）, umbrella electrode needle（1）, injection nozzle（9）, connecting cable（7）, plug（8）And catheter length holding structure；Conduit（3）Distal end have sharp needle point（2）, umbrella electrode needle（1）It can be from conduit（3）The needle point of distal end（2）Interior expansion or withdrawal.Because conduit（3）It is soft, elongated (60 180cm), therefore it can be by the working chambers of various endoscopes by conduit（3）The metal needle point of distal end（2）It is pierced into the tissue of lesion, umbrella electrode needle is then unfolded（1）Carry out RF ablation.Umbrella electrode needle（1）Tip be equipped with injection orifice and temperature thermocouple（11）, can liquid medicine injection and temperature control simultaneously when carrying out RF ablation.Catheter length holding structure can ensure that soft, elongated conduit（3）When under tension or pressure, length remains unchanged.
Description
Technical field
The present invention relates to a kind of endoscope-use umbrella shape radio-frequency ablation electrode needle more particularly to it is a kind of can coordinate with endoscope,
Treat benign and malignant tumour umbrella shape radio-frequency ablation electrode.
Background technology
Medical endoscope is in surgical operation and regular medication check, compared with traditional surgical operation, has operation spirit
The features such as living, simple, direct, substantially increases diagnosis capability, improves working efficiency.
Medical endoscope is using human body natural pore or opens several apertures when necessary, if doctor expertly will in
Sight glass camera lens gos deep into body, and internal closed operation can be just carried out in vitro by other surgical instruments and camera shooting display system
Operation.The functional Minimally Invasive Surgery of medical endoscope has obtained accepting extensively for doctor and patient, nearly all section in hospital
Room is all extensively using medical endoscope technology.
The shank of radio-frequency ablation electrode needle is hard metal tube at present, is only suitable for percutaneous puncture progress radio frequency and disappears
Melt, it is impossible to endoscope partner treatment is benign and malignant tumour, therefore be badly in need of developing it is a kind of can be benign with endoscope partner treatment
With the ablating device of malignant tumour, this blank is filled up in the invention of endoscope-use umbrella shape radio-frequency ablation electrode needle.
The flexible conduit existing defects of the umbrella shape radio-frequency ablation electrode of the prior art.Due to endoscope-use umbrella shape RF ablation
Usually in 90-180cm, the working chamber of endoscope is bending again to the length of electrode needle, therefore when umbrella electrode needle is unfolded or receives
During returning, resistance is very big.Umbrella electrode needle will expansion or withdrawal out of soft, slender conduit distal end needle point.When umbrella shape electricity
When pole needle starts to spread out, since the tip of umbrella electrode needle and the inner wall frictional force of needle point make conduit under tension；When umbrella shape electricity
When pole needle starts to withdraw, conduit will be by compressing force, these pulling force or pressure can cause catheter length to change, catheter length
Changing can cause electrode needle that can not be fully deployed or withdraw.Therefore a kind of soft, elongated conduit must be just developed, this is led
During umbrella electrode needle is unfolded or withdraws, length remains unchanged the length of pipe.
Invention content
For more than problems of the prior art, the purpose of the present invention is to provide one kind to coordinate with endoscope
The umbrella shape radio-frequency ablation electrode used, has a soft, elongated conduit, and the length of the conduit be unfolded in umbrella electrode needle or
During withdrawal, length remains unchanged.
Technical scheme is as follows.
A kind of endoscope-use umbrella shape radio-frequency ablation electrode needle, including handle, conduit, needle point, umbrella electrode needle, injection nozzle,
Connecting cable and plug, wherein：
The distal end of the conduit is connected with the needle point, and the umbrella electrode needle can be unfolded or receive out of described needle point
It returns；
The endoscope-use umbrella shape radio-frequency ablation electrode needle further includes catheter length holding mechanism, can ensure that soft, elongated
Conduit under tension or pressure when, length remains unchanged.
Preferably, the catheter length holding mechanism includes two parallel wires in the conduit, and two parallel
The distal end of wire is connect with needle point, and proximal end is connect with handle.
Preferably, central metal pipe is further included, for driving the expansion of umbrella electrode needle and withdrawing；The central metal pipe
Proximal end is connected with the rack back side in the handle, is driven with the rack meshed gears by knob, and the rack can be along
The track movement of handle, the distal end of the central metal pipe is connect with the umbrella electrode needle.
Preferably, there is polyfluortetraethylene pipe between the wire, the central metal pipe is inserted into the polytetrafluoroethylene (PTFE)
In pipe.
Preferably, the outer layer of the conduit has heat-shrink tube.
Preferably, the umbrella electrode needle is made of several pieces of metal capillaries, and tip is equipped with temperature thermocouple, can be real-time
Ablation temperature is monitored and controlled.
Preferably, the umbrella electrode needle tip is equipped with medicine-pouring hole.
Preferably, the inner cavity of the metal capillary is connected with the injection nozzle on the handle.
Preferably, the proximal end of the umbrella electrode needle and connecting tube distal end connects, the proximal end of the connecting tube and it is described in
The distal end connection of heart pipe, the proximal end of central metal pipe and the distal end of injection-tube connect, the proximal end of the injection-tube and the injection
Mouth connects.
Preferably, the length of the conduit is 60-180cm.
By above technical scheme, the present invention can obtain following technique effect.
During umbrella electrode needle is unfolded or withdraws, length remains unchanged the length of conduit.
Umbrella electrode needle expansion withdrawal resistance is small, driving force is big.
Umbrella electrode needle tip installs temperature thermocouple, and tip is additionally provided with medicine-pouring hole, can while RF ablation is carried out
Injecting normal saline or chemotherapeutic drugs, so as to increase ablation range or carry out local chemotherapy.
Description of the drawings
Fig. 1 is the outline drawing of the endoscope-use umbrella shape radio-frequency ablation electrode needle of the present invention.
Fig. 2 is the endoscope-use umbrella shape radio-frequency ablation electrode needle distal portions sectional view of the present invention.
Fig. 3 is the conduit sectional view of the endoscope-use umbrella shape radio-frequency ablation electrode needle of the present invention.
Fig. 4 is the handle arrangement figure of the endoscope-use umbrella shape radio-frequency ablation electrode needle of the present invention.
Fig. 5 is the endoscope-use umbrella shape radio-frequency ablation electrode needle handle casing structure chart of the present invention.
Identical label represents identical component in all figures, in figure labelled corresponding component or component title such as
Under：
1 umbrella electrode needle, 2 needle point
3 conduit, 4 knob
5 handle, 6 injection-tube
7 cable, 8 plug
9 injection nozzle, 10 graduated scale
11 thermocouple, 12 connecting tube
13 central metal pipe, 14 polyfluortetraethylene pipe
15th, 16 heat-shrink tube of 15* wires
17 connector, 18 rack
19 gear, 20 upper casing
21 lower casings
Specific embodiment
Fig. 1 is the outline drawing of endoscope-use umbrella shape radio-frequency ablation electrode needle, mainly by handle（5）, conduit（3）, needle point
（2）, umbrella electrode needle（1）, injection nozzle（9）, cable（7）And socket（8）Composition；Conduit（3）Distal end and sharp needle point（2）
It is connected, umbrella shape radio-frequency ablation electrode needle can be by the working chamber of endoscope by the needle point of distal end of catheter（2）It is pierced into the tissue of lesion
It is interior, umbrella electrode needle（1）It can be from conduit（3）The needle point of distal end（2）Interior expansion or withdrawal.Handle（5）On have injection nozzle（9）And note
Penetrate pipe（6）, liquid can pass through conduit（3）From umbrella electrode needle（1）Needle point project.Because conduit is soft, elongated (60-
180cm), therefore it can be by the working chambers of various endoscopes by the metal needle point of distal end of catheter（2）It is pierced into the tissue of lesion,
Then umbrella electrode needle is unfolded（1）Carry out RF ablation.Umbrella electrode needle（1）Tip be equipped with thermocouple（11）, can be right in real time
Ablation temperature is monitored and controls.Umbrella electrode needle（1）It is made of several pieces of metal capillaries, the inner cavity of capillary passes through conduit
（3）With handle（5）On injection nozzle（9）Connection, when carrying out ablation, can at the same injecting normal saline or liquid to expand
Ablation range or local chemotherapy.
Fig. 2 be endoscope-use umbrella shape radio-frequency ablation electrode needle distal portions sectional view, umbrella electrode needle（1）Tip be equipped with
Thermocouple（11）, can ablation temperature be monitored and be controlled in real time.Umbrella electrode needle（1）Proximal end be inserted into connecting tube（12）
It is interior, it is connected together in A spot welding；Connecting tube（12）Proximal end B points and central tube（13）Weld together, liquid can pass through center
Pipe（13）, connecting tube（12）With umbrella electrode needle（1）Tip project；Thermocouple（11）It can also pass through above-mentioned road with radio-frequency current
Diameter is connected to handle（5）It is interior, then pass through cable（7）It is connected to plug（8）.
Wire（15、15*）In D and D* points and needle point（2）Weld together, D and D* points must be in needle point（2）Proximal end
Diametrically.
Central metal pipe（13）It is inserted into polyfluortetraethylene pipe（14）It is interior, because the friction coefficient of polytetrafluoroethylene (PTFE) is extremely low, have
Fabulous lubricity, therefore available central tube（13）Drive umbrella electrode needle（1）Expansion and withdrawal.
Conduit sectional views of the Fig. 3 for endoscope-use umbrella shape radio-frequency ablation electrode needle, wire（15、15*）D and D* points with
Needle point（2）Weld together, D and D* points must be in needle point（2）Proximal end is diametrically.Wire（15、15*）Proximal end and handle
（5）Interior connector（17）It is fixedly connected, connector（17）And and handle（5）It is fixedly connected；Conduit（3）Outer layer have heat-shrink tube
（16）Tightly by two wire therein（15、15*）, polyfluortetraethylene pipe（14）And central tube（13）It bundles, because
This conduit（3）Length will not change, make umbrella electrode needle（1）Successfully it can be unfolded or withdraw.
Fig. 4 is the handle arrangement figure of endoscope-use umbrella shape radio-frequency ablation electrode needle, two wires in figure（15、15*）'s
Proximal end and handle（5）Interior connector（17）It is fixedly connected, connector（17）And and handle（5）Distal end be fixedly connected, it is this
Structure can ensure that soft, elongated conduit（3）When under tension or pressure, length remains unchanged.
Umbrella electrode needle（1）Central metal pipe（13）Proximal end and rack（18）The back side（Without the flank of tooth）It is connected, gear
（19）By knob（4）Driving, rack（18）It can be along handle（5）Track move up and down, central metal pipe（13）Distal end with
Umbrella electrode needle（1）Connection, therefore umbrella electrode needle（1）Deployable or withdrawal.
Umbrella electrode needle（1）Tip be equipped with thermocouple（11）, thermocouple（11）Lead pass through central metal pipe（13）
Inner cavity, cable（7）It is connected to plug（8）On；Central metal pipe（13）Proximal end（C points）Will and injection-tube（7）Connection, center gold
Belong to pipe（13）Inner cavity and injection-tube（7）Inner cavity it is unimpeded, but sealed with the external world with glue.
Fig. 5 be endoscope-use umbrella shape radio-frequency ablation electrode needle handle casing structure chart, lower casing（21）Interior installation is shown in Fig. 4
All components, upper casing（20）Equipped with transparent graduated scale（10）, it can show umbrella electrode needle（1）The diameter of expansion.
The foregoing is merely several specific embodiments of the present invention, above example is only used for technical scheme of the present invention
The right being not intended to limit the present invention is explained with inventive concept.All technician in the art are in this patent
The prior art is combined on the basis of inventive concept, by logic analysis, reasoning or the available other technologies scheme of limited experimentation,
Also it should be regarded as falling within the claims of the present invention.
Claims (9)
1. a kind of endoscope-use umbrella shape radio-frequency ablation electrode needle, including handle（5）, conduit（3）, needle point（2）, umbrella electrode needle
（1）, injection nozzle（9）, connecting cable（7）And plug（8）, it is characterised in that：
The conduit（3）It is soft, elongated, therefore it can be by the working chamber of the endoscope by the needle point of distal end of catheter
It is pierced into；
The conduit（3）Distal end and the needle point（2）It is connected, the umbrella electrode needle（1）It can be from the needle point（2）It is interior
Expansion is withdrawn；
The endoscope-use umbrella shape radio-frequency ablation electrode needle further includes catheter length holding mechanism, can ensure that soft, elongated lead
Pipe（3）When under tension or pressure, length remains unchanged；
The catheter length holding mechanism includes the conduit（3）Two interior parallel wires（15、15*）, two parallel
Wire（15、15*）Distal end and needle point（2）Connection, proximal end and handle（5）Connection.
2. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 1, which is characterized in that further include central metal
Pipe（13）, for driving umbrella electrode needle（1）Expansion and withdrawal；The central metal pipe（13）Proximal end and the handle（5）
Interior rack（18）The back side is connected, with the rack（18）Meshed gears（19）By knob（4）Driving, the rack（18）It can
Along handle（5）Track movement, the central metal pipe（13）Distal end and the umbrella electrode needle（1）Connection.
3. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 2, which is characterized in that the wire（15、
15*）Between have polyfluortetraethylene pipe（14）, the central metal pipe（13）It is inserted into the polyfluortetraethylene pipe（14）It is interior.
4. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 3, which is characterized in that the conduit（3）'s
Outer layer has heat-shrink tube（16）.
5. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 2, which is characterized in that the umbrella electrode
Needle（1）It is made of several pieces of metal capillaries, tip is equipped with temperature thermocouple（11）, can in real time to ablation temperature be monitored and
Control.
6. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 5, which is characterized in that the umbrella electrode
Needle（1）Tip is equipped with medicine-pouring hole.
7. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 6, which is characterized in that the metal capillary
The inner cavity of pipe and the handle（5）On the injection nozzle（9）Connection.
8. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 7, which is characterized in that the umbrella electrode
Needle（1）Proximal end and connecting tube（12）Distal end connects, the connecting tube（12）Proximal end and the central metal pipe（13）It is remote
End connection, central metal pipe（13）Proximal end and injection-tube（7）Distal end connection, the injection-tube（7）Proximal end and the note
Nozzle（9）Connection.
9. endoscope-use umbrella shape radio-frequency ablation electrode needle according to claim 1, which is characterized in that the length of the conduit
It spends for 60-180cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016343.6A CN105434040B (en) | 2016-01-11 | 2016-01-11 | Endoscope-use umbrella shape radio-frequency ablation electrode needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016343.6A CN105434040B (en) | 2016-01-11 | 2016-01-11 | Endoscope-use umbrella shape radio-frequency ablation electrode needle |
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| Publication Number | Publication Date |
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| CN105434040A CN105434040A (en) | 2016-03-30 |
| CN105434040B true CN105434040B (en) | 2018-06-29 |
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| CN201610016343.6A Active CN105434040B (en) | 2016-01-11 | 2016-01-11 | Endoscope-use umbrella shape radio-frequency ablation electrode needle |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308927A (en) * | 2016-08-22 | 2017-01-11 | 北京市肿瘤防治研究所 | Multi-tip extension type radiofrequency ablation electrode needle |
| CN106963486B (en) * | 2017-05-20 | 2021-01-12 | 王新 | Esophagus reflux radio frequency ablation electrode |
| CN107174336B (en) * | 2017-05-20 | 2020-12-08 | 王新 | Esophagus reflux radio frequency ablation electrode |
| CN107174335A (en) * | 2017-06-30 | 2017-09-19 | 哈尔滨美顿医疗科技有限公司 | To the radiofrequency catheter of alimentary canal infantile tumour RF therapy under electronic gastroscope cooperation |
| CN108056815B (en) * | 2017-12-28 | 2020-03-31 | 山东省立医院 | Tumor microwave ablation needle with temperature control function |
| CN110169819A (en) * | 2019-05-31 | 2019-08-27 | 江苏美安医药股份有限公司 | Radiofrequency catheter rotary type goes out needle system |
| CN111012481B (en) * | 2019-12-31 | 2023-12-01 | 杭州堃博生物科技有限公司 | Radio frequency ablation catheter and radio frequency ablation system |
| CN110960314B (en) * | 2019-12-31 | 2021-06-15 | 杭州堃博生物科技有限公司 | Detection mechanism, radiofrequency ablation catheter and radiofrequency ablation system |
| CN111658125A (en) * | 2020-05-12 | 2020-09-15 | 至善介入消融技术研究院(南京)有限公司 | Ablation catheter and ablation device for image-guided ablation |
| CN116616887A (en) * | 2023-04-16 | 2023-08-22 | 王洪奎 | Female stress urinary incontinence radio frequency ablation electrode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7524318B2 (en) * | 2004-10-28 | 2009-04-28 | Boston Scientific Scimed, Inc. | Ablation probe with flared electrodes |
| CN2778222Y (en) * | 2005-03-10 | 2006-05-10 | 罗奎 | Electric-coagulating guiding-tube with controllable electric-coagulating head |
| CN2925405Y (en) * | 2005-12-06 | 2007-07-25 | 王洪奎 | Multi-pin tumor radiofrequency melting electrode |
| CN100475287C (en) * | 2005-12-27 | 2009-04-08 | 重庆大学 | Bundling electrode with integrated positive pole and negative pole of shape memory alloy |
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