CN219629767U - Radio frequency ablation electrode needle for endoscope - Google Patents
Radio frequency ablation electrode needle for endoscope Download PDFInfo
- Publication number
- CN219629767U CN219629767U CN202321307027.6U CN202321307027U CN219629767U CN 219629767 U CN219629767 U CN 219629767U CN 202321307027 U CN202321307027 U CN 202321307027U CN 219629767 U CN219629767 U CN 219629767U
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- China
- Prior art keywords
- needle
- radio frequency
- handle
- metal spring
- tube
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- 238000007674 radiofrequency ablation Methods 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 65
- 239000007924 injection Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 2
- 206010028980 Neoplasm Diseases 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 208000013435 necrotic lesion Diseases 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The utility model provides a radio frequency ablation electrode needle for an endoscope, which comprises a handle, an outer catheter and a radio frequency needle, wherein the lower end of the outer catheter is fixed in the handle, the radio frequency needle can movably penetrate through the outer catheter, the outer catheter is a metal spring tube, the upper end of the metal spring tube is fixedly provided with a needle head, the metal spring tube is sleeved with an outer sheath tube which wraps the metal spring tube and the needle head in a sliding manner, the handle is internally provided with an outer sheath tube adjusting assembly and a radio frequency needle adjusting assembly, the outer sheath tube adjusting assembly is connected with the outer sheath tube which stretches into the handle, and the radio frequency needle adjusting assembly is connected with the radio frequency needle which stretches into the handle. When the utility model is used, the scratch of the endoscope lens can be avoided, and the suitability of the catheter and the endoscope working cavity is improved.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a radio frequency ablation electrode needle for an endoscope.
Background
The radio frequency ablation technology is widely applied to the treatment of malignant tumors as a minimally invasive means, and the endoscope technology can enable an endoscope lens to penetrate into a human body through a human body cavity channel to directly inspect a focus area, so that the accuracy of diagnosis is improved, and the accuracy of tumor treatment can be further improved by combining the radio frequency ablation technology with the endoscope technology; however, most of the electrode needles used in the rf ablation technique are rigid needle tubes, which are not well adapted to the flexible working lumen of the endoscope.
Patent number CN201610016343.6 discloses an umbrella-shaped radio frequency ablation electrode needle for an endoscope, wherein an outer tube of the umbrella-shaped radio frequency ablation electrode needle adopts a soft catheter, two parallel metal wires are arranged on the inner wall of the catheter, and the umbrella-shaped electrode needle is movably arranged in the catheter; the patent can smoothly enter the bent working cavity of the endoscope through the soft catheter, and meanwhile, the metal wire can ensure that the catheter does not deform when the umbrella-shaped electrode needle enters and exits the catheter, so that the smooth operation of radio frequency ablation is ensured.
However, the patent still has the defects in practical use: 1. because the needle point of the head part of the outer tube is exposed, when the outer tube is matched with the endoscope, if the outer tube is improperly operated, the endoscope is scratched by the needle point, and the operation cost is increased; 2. after the metal wires in the catheter are matched with the catheter and enter the endoscope working cavity, the two metal wires are arranged in parallel, and the adjustable directions of the metal wires are only two sides of the metal wires, so that the adaptability is required to be further enhanced according to the bending direction of the endoscope working cavity.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the radio frequency ablation electrode needle for the endoscope, which can prevent the lens of the endoscope from being scratched and improve the suitability of a catheter and a working cavity of the endoscope.
The technical scheme of the utility model is as follows: the utility model provides an endoscope is with radio frequency ablation electrode needle, includes the handle, outer pipe and radio frequency needle, outer pipe lower extreme is fixed in the handle, the radio frequency needle is movable to run through in outer pipe, outer pipe is the metal spring tube, metal spring tube upper end fixed mounting has the syringe needle, and the metal spring tube outer slip cap has the outer sheath pipe to wrap up metal spring tube and syringe needle, be equipped with sheath pipe adjusting part and radio frequency needle adjusting part in the handle, sheath pipe adjusting part links to each other with the outer sheath pipe that stretches into in the handle for drive outer sheath pipe along metal spring tube axial displacement, radio frequency needle adjusting part links to each other with the radio frequency needle that stretches into in the handle, is used for driving radio frequency needle business turn over metal spring tube upper end syringe needle. The metal spring tube is used as the outer guide tube, so that the metal spring tube has flexibility in multiple directions while ensuring toughness, and can be bent in all directions, thereby effectively improving the suitability of the outer guide tube and the endoscope working cavity; meanwhile, the outer side of the metal spring tube is sleeved with the outer sheath tube, the outer sheath tube is driven by the outer sheath tube adjusting assembly to axially move along the metal spring tube, and the metal spring tube can be contained in the outer sheath tube when the electrode needle does not enter a treatment area, so that the needle head at the upper end of the metal spring tube is prevented from scratching the endoscope.
The sheath tube adjusting assembly comprises a push button and a sliding block, a bar-shaped hole is formed in the handle, a push rod part which slides in a matched mode with the bar-shaped hole is arranged at the bottom of the push button, the push rod part penetrates into the bar-shaped hole to be connected with the sliding block, and the end part of the sheath tube is fixedly connected with the sliding block through a metal connecting pipe. The metal connecting pipe is arranged at the end of the outer sheath pipe, so that the end part of the outer sheath pipe has a supporting function, and the outer sheath pipe is stably connected with the sliding block.
The radio frequency needle adjusting assembly comprises a rack, a gear and an adjusting knob, wherein two sides of the rack are slidably connected with a sliding groove on the inner side of the handle, the back side of the rack is fixedly connected with a radio frequency needle extending into the handle, the adjusting knob penetrates into the handle through a rotating shaft to be connected with the gear, and the gear is meshed with meshing teeth of the rack.
The radio frequency needle comprises a main needle part and sub needle parts, the sub needle parts are uniformly distributed along the circumferential direction of the main needle part, the lower end of the sub needle part is fixedly connected with the upper end part of the main needle part, and the lower end of the main needle part is fixedly connected with the back side of the rack. The arrangement of the sub-needle part can lead the radio frequency needle to push out the metal spring tube to enter the treatment area, be unfolded in an umbrella shape, increase the treatment area and promote the treatment effect.
The handle is internally fixed with a fixed block coaxial with the sliding block, the lower end of the metal spring tube is fixedly connected with the fixed block through the central tube, the back side of the rack is provided with a through groove for the sliding block to enter and exit, and the fixed block and the sliding block are matched and slide with the through groove. The through groove is formed in the back side of the rack, the sliding block can be matched with the through groove, so that the rack can be matched with the sliding block of the outer sheath adjusting assembly, the displacement parts of the two adjusting assemblies are overlapped, and the length dimension of the handle is minimized.
The main needle part and the sub needle part are hollow capillaries, the joints of the sub needle part and the main needle part are mutually communicated, the handle is provided with a liquid injection pipe, and one end of the liquid injection pipe penetrates into the handle to be communicated with the main needle part. Physiological saline or medicine is injected into the radio frequency needle through the liquid injection pipe, so that the treatment effect is consolidated and the effect of coagulating necrotic lesion tissues is achieved.
The beneficial effects of the utility model are as follows:
according to the scheme, the metal spring tube is used as the outer guide tube, and has flexibility and toughness, so that the metal spring tube can be bent in all directions, and the suitability of the outer guide tube and the endoscope working cavity is effectively improved; meanwhile, the outer side of the metal spring tube is sleeved with the outer sheath tube, the outer sheath tube is driven by the outer sheath tube adjusting assembly to axially move along the metal spring tube, and the metal spring tube can be contained in the outer sheath tube when the electrode needle does not enter a treatment area, so that the needle head at the upper end of the metal spring tube is prevented from scratching the endoscope.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the handle of the present utility model;
FIG. 3 is a schematic view of the structure of the sheath adjusting assembly and the RF needle adjusting assembly in the present utility model;
fig. 4 is a cross-sectional view at a in fig. 1.
Reference numerals: 1. a handle; 11. a chute; 12. a bar-shaped hole; 13. a pushing groove; 2. a metal spring tube; 21. a needle; 22. a central tube; 3. a main needle portion; 31. a sub-needle portion; 4. an outer sheath; 41. a metal connecting pipe; 5. pushing and twisting; 51. a push rod part; 6. a slide block; 7. a rack; 71. a through groove; 8. a gear; 9. an adjustment knob; 10. a fixed block; 14. a liquid injection pipe; 15. a radio frequency cable.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the following description is made in detail with reference to the accompanying drawings, and other embodiments obtained by those skilled in the art without making any inventive effort are all within the scope of the present utility model.
As shown in fig. 1 to 4, the utility model provides a radio frequency ablation electrode needle for an endoscope, which comprises a handle 1, an outer catheter and a radio frequency needle, wherein the outer catheter is a metal spring tube 2, a needle head 21 is fixedly arranged at the upper end of the metal spring tube 2, the lower end of the metal spring tube 2 is fixed in the handle 1, the metal spring tube 2 is used as the outer catheter, and the metal spring tube 2 has multi-directional flexibility and can be bent in all directions while ensuring toughness, so that the suitability of the outer catheter and an endoscope working cavity is effectively improved; the radio frequency needle can be movably penetrated in the metal spring tube 2, the radio frequency needle comprises a main needle part 3 and sub-needle parts 31, the sub-needle parts 31 are uniformly distributed along the circumferential direction of the main needle part 3, the lower ends of the sub-needle parts 31 are fixedly connected with the upper end parts of the main needle part 3, in the embodiment, the number of the sub-needle parts 31 is six, the sub-needle parts are made of memory alloy materials with higher elasticity and strength, and can be prefabricated into an umbrella-shaped structure and be contained in the metal spring tube 2 together with the main needle part 3, so that the sub-needle parts 31 can be better formed into an umbrella shape after being discharged from the needle head 21, the treatment area is increased, and the treatment effect is improved.
The metal spring tube 2 is externally sleeved with an outer sheath tube 4 which wraps the metal spring tube 2 and the needle head 21, the outer sheath tube 4 is a nonmetal tube, preferably, the outer sheath tube 4 is a polytetrafluoroethylene tube, an outer sheath tube adjusting assembly and a radio frequency needle adjusting assembly are arranged in the handle 1, the outer sheath tube adjusting assembly is connected with the outer sheath tube 4 which stretches into the handle 1 and is used for driving the outer sheath tube 4 to axially move along the metal spring tube 2, and the radio frequency needle adjusting assembly is connected with the lower end of the main needle part 3 which stretches into the handle 1 and is used for driving a radio frequency needle to enter and exit the needle head 21 at the upper end of the metal spring tube. The outer side of the metal spring tube 2 is sleeved with the outer sheath tube 4, the outer sheath tube 4 is driven by the outer sheath tube adjusting assembly to axially move along the metal spring tube 2, and when the electrode needle does not enter a treatment area, the metal spring tube 2 can be contained in the outer sheath tube 4, so that the needle head 21 at the upper end of the metal spring tube is prevented from scratching an endoscope.
The sheath tube adjusting assembly comprises a push button 5 and a sliding block 6, a strip-shaped hole 12 is formed in the handle 1, a push rod portion 51 which is matched with the strip-shaped hole 12 to slide is arranged at the bottom of the push button 5, the push rod portion 51 penetrates into the strip-shaped hole 12 to be connected with the sliding block 6, and the end portion of the sheath tube 4 is fixedly connected with the sliding block 6 through a metal connecting pipe 41. The metal connecting pipe 41 is arranged at the end part of the outer sheath tube 4, the end part of the outer sheath tube 4 plays a supporting role, so that the outer sheath tube 4 and the sliding block 6 are stably connected, preferably, the pushing groove 13 matched with the pushing button 5 is formed in the outer wall of the handle 1, the strip-shaped hole 12 is formed in the bottom of the pushing groove 13, the pushing button 5 is pushed, the pushing button 5 can slide along the pushing groove 13, and the pushing stability of the pushing button 5 is enhanced.
The radiofrequency needle adjusting assembly comprises a rack 7, a gear 8 and an adjusting knob 9, wherein two sides of the rack 7 are in sliding connection with a sliding groove 11 on the inner side of the handle 1, the back side of the rack 7 is fixedly connected with a main needle part 3 extending into the handle 1, the adjusting knob 9 penetrates into the handle 1 through a rotating shaft to be connected with the gear 8, and the gear 8 is meshed with meshing teeth of the rack 7.
The handle 1 is internally fixed with a fixed block 10 coaxial with the sliding block 6, the lower end of the metal spring tube 2 is fixedly connected with the fixed block 10 through a central tube 22, the central tube 22 can increase the strength of the metal spring 2 tube in the handle 1, the main needle part 3 in the central tube 22 is kept vertical, the main needle part 3 in the handle 1 is prevented from bending, the back side of the rack 7 is provided with a through groove 71 for the sliding block 6 to enter and exit, and the fixed block 10 and the sliding block 6 are matched with the through groove 71 to slide. The back side of the rack 7 is provided with a through groove 71, and the sliding block 6 can be matched with the through groove 71, so that the rack 7 can be matched with the sliding block 6 of the outer sheath adjusting component, the displacement parts of the two adjusting components are overlapped, and the length dimension of the handle 1 is minimized.
The main needle part 3 and the sub needle part 31 are hollow capillaries, the connection parts of the sub needle part 31 and the main needle part 3 are mutually communicated, the handle 1 is provided with a liquid injection pipe 14, and one end of the liquid injection pipe 14 penetrates into the handle 1 to be communicated with the main needle part 3. Physiological saline or medicine is injected into the radio frequency needle through the liquid injection pipe 14, so that the treatment effect is consolidated and the effect of solidifying necrotic lesion tissues is achieved; in addition, the outer side of the metal spring tube 2 is coated with an insulating coating, the lower end of the main needle part 3 is electrically connected with the radio frequency cable 15 through a high-frequency wire, the main needle part 3 and the sub-needle part 31 are tightly contacted in the metal spring tube 2, and are electrically connected through the radio frequency cable 15, so that the main needle part 3, the sub-needle part 31 and the needle head 21 at the top of the metal spring tube generate a thermal electric field to ablate a tumor area.
When the technical scheme is implemented, medical staff completely retracts the main needle part 3 and the sub-needle part 31 into the metal spring tube 2 before executing ablation operation, pushes the push button 5 forwards to enable the outer sheath tube 4 to wrap the metal spring tube 2 and the needle head 21, the needle head is led into a focus area along a working cavity of an endoscope, a tumor area to be treated is found through observation of the endoscope, the push button 5 is pushed backwards to enable the needle head 21 to expose the outer sheath tube 4, the needle head 21 is penetrated into a tumor, the adjusting knob 9 is rotated, the main needle part 3 and the sub-needle part 31 extend out of the needle head 21 to be umbrella-shaped to penetrate into the tumor, the radio frequency cable 15 is connected, and the tumor in the treatment area is ablated.
Claims (6)
1. The utility model provides an endoscope is with radio frequency ablation electrode needle, includes the handle, outer pipe and radio frequency needle, outer pipe lower extreme is fixed in the handle, the radio frequency needle is movable to run through in outer pipe, a serial communication port, outer pipe is the metal spring tube, metal spring tube upper end fixed mounting has the syringe needle, and the outer slip cap of metal spring tube and syringe needle has the outer sheath pipe of parcel, be equipped with sheath pipe adjusting part and radio frequency needle adjusting part in the handle, sheath pipe adjusting part links to each other with the sheath pipe that stretches into in the handle for drive sheath pipe along metal spring tube axial displacement, radio frequency needle adjusting part links to each other with the radio frequency needle that stretches into in the handle, is used for driving radio frequency needle business turn over metal spring tube upper end syringe needle.
2. The radio frequency ablation electrode needle for an endoscope according to claim 1, wherein the sheath tube adjusting assembly comprises a push button and a sliding block, a bar-shaped hole is formed in the handle, a push rod part which slides in a matched manner with the bar-shaped hole is arranged at the bottom of the push button, the push rod part penetrates into the bar-shaped hole to be connected with the sliding block, and the end part of the sheath tube is fixedly connected with the sliding block through a metal connecting pipe.
3. The radio frequency ablation electrode needle for an endoscope according to claim 2, wherein the radio frequency needle adjusting assembly comprises a rack, a gear and an adjusting knob, both sides of the rack are slidably connected with a sliding groove on the inner side of the handle, the back side of the rack is fixedly connected with the radio frequency needle extending into the handle, the adjusting knob penetrates into the handle through a rotating shaft to be connected with the gear, and the gear is meshed with meshing teeth of the rack.
4. A radiofrequency ablation electrode needle for an endoscope according to claim 3 and wherein said radiofrequency ablation electrode needle comprises a main needle portion and sub-needle portions, said sub-needle portions are uniformly distributed along the circumferential direction of the main needle portion, the lower ends of the sub-needle portions are fixedly connected with the upper end portions of the main needle portion, and the lower ends of the main needle portions are fixedly connected with the back side of the rack.
5. The radio frequency ablation electrode needle for the endoscope according to claim 3, wherein a fixed block coaxial with the sliding block is fixed in the handle, the lower end of the metal spring tube is fixedly connected with the fixed block through the central tube, a through groove for the sliding block to enter is formed in the back side of the rack, and the fixed block and the sliding block are matched and slide with the through groove.
6. The radio frequency ablation electrode needle for the endoscope according to claim 4, wherein the main needle part and the sub needle part are hollow capillaries, the connection parts of the sub needle part and the main needle part are communicated with each other, the handle is provided with a liquid injection pipe, and one end of the liquid injection pipe penetrates into the handle to be communicated with the main needle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321307027.6U CN219629767U (en) | 2023-05-26 | 2023-05-26 | Radio frequency ablation electrode needle for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321307027.6U CN219629767U (en) | 2023-05-26 | 2023-05-26 | Radio frequency ablation electrode needle for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219629767U true CN219629767U (en) | 2023-09-05 |
Family
ID=87818335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321307027.6U Active CN219629767U (en) | 2023-05-26 | 2023-05-26 | Radio frequency ablation electrode needle for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219629767U (en) |
-
2023
- 2023-05-26 CN CN202321307027.6U patent/CN219629767U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A radiofrequency ablation electrode needle for endoscopy Granted publication date: 20230905 Pledgee: Weihai City Commercial Bank Limited by Share Ltd. high tech branch Pledgor: Weihai Hongyuan Medical Technology Co.,Ltd. Registration number: Y2024980005559 |