CN106037927B - Electrode needle system of adjustable water injection ablation electrode needle - Google Patents
Electrode needle system of adjustable water injection ablation electrode needle Download PDFInfo
- Publication number
- CN106037927B CN106037927B CN201610323742.7A CN201610323742A CN106037927B CN 106037927 B CN106037927 B CN 106037927B CN 201610323742 A CN201610323742 A CN 201610323742A CN 106037927 B CN106037927 B CN 106037927B
- Authority
- CN
- China
- Prior art keywords
- water pipe
- needle
- fixing seat
- radio frequency
- needle rod
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 238000002679 ablation Methods 0.000 title claims abstract description 37
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 11
- 230000001575 pathological effect Effects 0.000 claims description 11
- 239000002504 physiological saline solution Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 208000031737 Tissue Adhesions Diseases 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 210000001519 tissue Anatomy 0.000 description 16
- 238000007674 radiofrequency ablation Methods 0.000 description 7
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 229910001006 Constantan Inorganic materials 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 208000024891 symptom Diseases 0.000 description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002690 local anesthesia Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011297 radiofrequency ablation treatment Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Classifications
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Otolaryngology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
An electrode needle system of adjustable water injection ablation electrode needle, characterized by includes: the needle bar fixing seat comprises a needle bar (1), a needle bar fixing seat (6), a water pipe fixing seat (7), a water pipe (80) and a radio frequency cable assembly (8); needle bar fixing base (6) and water pipe fixing base (7) sealing connection form the cavity between needle bar fixing base (6) and water pipe fixing base (7), and this cavity communicates with the hollow structure of needle bar (1) inside, and water pipe fixing base (7) are connected to water pipe (80) one end makes water pipe (80) and needle bar (1) inside intercommunication. The water pipe and the radio frequency wire are integrated together, the fracture phenomenon is not easy to occur, the tissue adhesion caused by high-temperature heating can be improved or solved while the adhesion on the adhesion-preventing coating is prevented, and meanwhile, the front end of the needle rod can realize the effects of cooling through liquid seeped out from the water pipe.
Description
Technical Field
The invention relates to a disposable radio frequency ablation instrument, in particular to an electrode needle system of a temperature control radio frequency adjustable water injection ablation electrode needle for radio frequency ablation treatment of tumor and pathological tissue.
Background
With the progress of modern technology and oncology, radiofrequency ablation is becoming an effective way to treat cancer. The radio frequency ablation generally adopts local anesthesia, the disease sign is positioned through CT or B-ultrasonic scanning, after an electrode needle is penetrated into the center of a focus, the output power of the radio frequency ablation is automatically adjusted by monitoring the change of parameters such as impedance, temperature and the like of the focus tissue, and the radio frequency ablation is started, so that the focus tissue can rapidly generate a large-scale coagulative necrosis process. At present, the radio frequency ablation has 2 modes, one mode is inner-cooling type ablation, namely, cooling circulating water is introduced into the needle rod in the operation process, so that the temperature of the needle rod is kept at a lower temperature (usually 25-35 ℃), and the tip of the needle rod is prevented from being adhered; the other type is water injection type ablation, namely, 0.05-0.5ml/min of physiological saline is injected into the pathological tissue through a peristaltic pump while the ablation operation is carried out, and the physiological saline permeates into the tissue to change the impedance of the pathological tissue, so that the radio frequency ablation range is larger.
Structurally, the traditional adjustable water injection type ablation needle has the defects of unclear adjustable visual field, poorer adjustable hand feeling and heavier handle, and a fixer is required to be added to fix the ablation needle in the process of positioning the disease symptoms by CT and B ultrasonic so as to ensure that the ablation needle can be perpendicular to the position of the disease symptoms to ablate the tissues of the disease symptoms; secondly, the water injection pipe of the traditional adjustable water injection type ablation needle is thin, the pipe wall is thin, the water pipe is separated from the radio frequency wire, the borne tension is small, and the water pipe breakage phenomenon is more. From the performance, the traditional adjustable water injection type ablation needle has the advantages that the needle tip position does not have cooling water to cool the needle tip heating area, and the needle tip adhesion phenomenon is serious in the operation process and the operation accident is caused due to the fact that the treatment measures for tissue adhesion caused by high-temperature heating are not effectively taken.
Disclosure of Invention
The invention aims to provide an electrode needle system of an adjustable water injection ablation electrode needle aiming at the defects of the existing adjustable water injection ablation needle, the water pipe is not easy to break, and the performance of the adjustable water injection ablation electrode needle can improve or solve the problem of tissue adhesion caused by high-temperature heating.
The technical scheme for solving the problems is as follows:
an electrode needle system of an adjustable water injection ablation electrode needle, comprising: the needle bar fixing seat comprises a needle bar (1), a needle bar fixing seat (6), a water pipe fixing seat (7), a water pipe (80) and a radio frequency cable assembly (8); the needle rod fixing seat (6) is connected with the water pipe fixing seat (7) in a sealing manner, a cavity is formed between the needle rod fixing seat (6) and the water pipe fixing seat (7), the cavity is communicated with a hollow structure inside the needle rod (1), one end of the water pipe (80) is connected with the water pipe fixing seat (7) to enable the water pipe (80) to be communicated with the inside of the needle rod (1), the tip end of the needle rod (1) is composed of a triangular blade (101) easy to puncture, one or more fine holes (102) are formed in the needle rod (1), the fine holes (102) are communicated with the hollow structure inside the needle rod (1) and further communicated with the water pipe (80) and used for permeating physiological saline in the operation process; the radio frequency cable assembly (8) comprises three strands: one of the two strands is a radio frequency wire (802) consisting of a plurality of thin copper wires, the other two strands are T-shaped temperature sensing compensation wires (801), wherein the radio frequency wire (802) is connected with the needle rod (1) in an electric conduction mode through welding, the two strands of T-shaped temperature compensation wires (801) are connected together through welding and riveting, and the two strands of T-shaped temperature sensing compensation wires are assembled inside the needle rod (1) to the inside of the front end of the needle rod (1) through a water pipe fixing seat (7) and a needle rod fixing seat (6).
The needle bar (1) is uniformly bonded with the needle bar fixing seat (6), the water pipe (80) is fixedly connected with the water pipe fixing seat (7), and the water pipe fixing seat (7) is fixedly connected with the needle bar fixing seat (6) through glue, so that the sealing performance and the connection strength of the needle bar are guaranteed.
The radio frequency cable assembly is characterized in that the radio frequency cable (802) and the water pipe (80) are integrally injection-molded, the tail end of the radio frequency cable (802) is connected with a radio frequency host, the tail end of the water pipe (80) is connected with the luer connector (800), and the separation distance between the radio frequency cable assembly (8) and the water pipe (80) can be torn off automatically according to needs.
The front end of the needle bar (1) is provided with an adhesion-preventing coating (9) which is used for preventing the pathological tissue from adhering to the needle bar in the process of the ablation operation.
The water pipe (8) is a hollow pipe with the inner diameter of 0.5mm and the outer diameter of 1.5 mm.
The diameter of the pore (102) is a small hole with the diameter of 0.3-0.4 mm.
The inner wall of the needle bar fixing seat (6) is provided with a step (601) for positioning with the water pipe fixing seat (7).
The needle bar fixing seat (6) is provided with a liquid through small hole which is communicated with the hollow structure in the needle bar (1) and is used for forming a channel of physiological saline.
A through line small hole is formed in the water pipe fixing seat (7), and a compensation lead (801) for T-shaped temperature sensing passes through the water pipe fixing seat (7) and the needle rod fixing seat (6) to the front end inside the needle rod (1).
The water pipe fixing seat and the needle rod fixing seat are bonded and sealed through glue, and the water pipe fixing seat and the T-shaped sensor are bonded, fixed and sealed through glue. One end of the water pipe is connected with the water pipe fixing seat through glue, and the other end of the water pipe is a male luer connector used for being connected with the peristaltic pump pipe.
The needle rod is divided into two parts, the front end of the needle rod is a needle point part, the needle point is in a triangular cone shape and is made of medical hard stainless steel SUS630 so as to ensure the sharpness and hardness requirements in the puncture process, the rear end of the needle rod is a circular tube part which is made of non-medical stainless steel SUS304, a small hole with the diameter of 0.3-0.4mm is formed in the position, close to the needle point, of the circular tube, so that physiological saline can permeate into a pathological organ tissue in the operation process, and the needle point and the circular tube are connected together through laser welding to form the needle rod.
The needle bar is coated with an adhesion-preventing coating which is made of a conductive corrosion-resistant material with a low friction coefficient, such as chromium nitride or titanium nitride, or a conductive diamond D L C material, and the adhesion-preventing coating can prevent tissue adhesion caused by high-temperature heating to a certain extent, so that surgical accidents caused by needle point adhesion in the surgical process are avoided.
A T-shaped temperature thermocouple is arranged in the round tube close to the tip of the needle and used for measuring the temperature of the premalignant tissue in the operation process, so that the main machine can correspondingly adjust the power output value according to the temperature. The T-shaped thermocouple is formed by welding copper and constantan in the cable.
The cable is composed of three stranded wires, wherein one end of the three stranded wires is connected with the host through a socket, the radio frequency wire in the other end of the three stranded wires is connected with the needle rod through welding, the other two stranded wires are thermocouple wires, and the T-shaped thermocouple is formed by welding copper and constantan in the cable.
The invention has the beneficial effects that:
the adjustable needle bar has the advantages that the adjustable visual field is clear, the telescopic length of the needle bar can be freely adjusted through the adjusting knob, the length can be displayed, the handle is small and exquisite, the water pipe and the radio frequency wire are integrated together, the fracture phenomenon is not easy to occur, the tissue adhesion caused by high-temperature heating can be improved or solved on the adhesion coating, and meanwhile, the front end of the needle bar can realize the effects of cooling through liquid seeped out from the water pipe.
Drawings
Fig. 1 is a schematic view of the overall structure of an adjustable water injection type ablation needle.
Fig. 2 is a schematic structural diagram of the front end needle tip part of the adjustable water injection type ablation needle.
Fig. 3 is a structural schematic diagram of a needle rod telescopic adjusting system of the adjustable water injection type ablation needle.
Fig. 4 is a schematic view of the radio frequency welding of the adjustable water injection type ablation needle and the installation of the needle rod fixing seat, the water pipe fixing seat and the water pipe.
Fig. 5 is a schematic view of the adjusting knob of the present invention.
Fig. 6 is a schematic view of the structure of the adjusting sleeve of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 2 and 4, an electrode needle system of an adjustable water injection ablation electrode needle comprises: the needle bar fixing seat comprises a needle bar (1), a needle bar fixing seat (6), a water pipe fixing seat (7), a water pipe (80) and a radio frequency cable assembly (8); the needle rod fixing seat (6) is connected with the water pipe fixing seat (7) in a sealing manner, a cavity is formed between the needle rod fixing seat (6) and the water pipe fixing seat (7), the cavity is communicated with a hollow structure inside the needle rod (1), one end of the water pipe (80) is connected with the water pipe fixing seat (7) to enable the water pipe (80) to be communicated with the inside of the needle rod (1), the tip end of the needle rod (1) is composed of a triangular blade (101) easy to puncture, one or more fine holes (102) are formed in the needle rod (1), the fine holes (102) are communicated with the hollow structure inside the needle rod (1) and further communicated with the water pipe (80) and used for permeating physiological saline in the operation process; the radio frequency cable assembly (8) comprises three strands: one of the two strands is a radio frequency wire (802) consisting of a plurality of thin copper wires, the other two strands are T-shaped temperature sensing compensation wires (801), wherein the radio frequency wire (802) is connected with the needle rod (1) in an electric conduction mode through welding, the two strands of T-shaped temperature compensation wires (801) are connected together through welding and riveting, and the two strands of T-shaped temperature sensing compensation wires are assembled inside the needle rod (1) to the inside of the front end of the needle rod (1) through a water pipe fixing seat (7) and a needle rod fixing seat (6).
The needle bar (1) is uniformly bonded with the needle bar fixing seat (6), the water pipe (80) is fixedly connected with the water pipe fixing seat (7), and the water pipe fixing seat (7) is fixedly connected with the needle bar fixing seat (6) through glue, so that the sealing performance and the connection strength of the needle bar are guaranteed.
The radio frequency cable assembly is characterized in that the radio frequency cable (802) and the water pipe (80) are integrally injection-molded, the tail end of the radio frequency cable (802) is connected with a radio frequency host, the tail end of the water pipe (80) is connected with the luer connector (800), and the separation distance between the radio frequency cable assembly (8) and the water pipe (80) can be torn off automatically according to needs.
The front end of the needle bar (1) is provided with an adhesion-preventing coating (9) which is used for preventing the pathological tissue from adhering to the needle bar in the process of the ablation operation.
The water pipe (8) is a hollow pipe with the inner diameter of 0.5mm and the outer diameter of 1.5 mm.
The diameter of the pore (102) is a small hole with the diameter of 0.3-0.4 mm.
The inner wall of the needle bar fixing seat (6) is provided with a step (601) for positioning with the water pipe fixing seat (7).
The needle bar fixing seat (6) is provided with a liquid through small hole which is communicated with the hollow structure in the needle bar (1) and is used for forming a channel of physiological saline.
A through line small hole is formed in the water pipe fixing seat (7), and a compensation lead (801) for T-shaped temperature sensing passes through the water pipe fixing seat (7) and the needle rod fixing seat (6) to the front end inside the needle rod (1).
Referring to fig. 1 to 6, an adjustable water injection ablation electrode needle includes: the needle bar fixing device comprises a needle bar (1), a handle (4), an adjusting knob (3), an adjusting sleeve (10), a scale sliding block (5), a needle bar fixing seat (6), a water pipe fixing seat (7), a water pipe (80) and a radio frequency cable assembly (8); the handle (4) is in a hollow round tube shape, a waist-shaped hole (401) is formed in the handle (4), a length adjusting graduated scale (402) is printed on the edge of the waist-shaped hole (401), and a circular groove (403) is formed in the inner wall of the handle (4) and used for being matched with a cylindrical step (303) of the adjusting knob (3) to limit the adjusting knob (3) to move along the length direction of the handle; the adjusting knob (3) is arranged at the front end of the handle (4), the external thread (301) of the adjusting knob partially extends into the front end of the handle (4), the tail end of the handle (4) is provided with a plug (404), and the plug (404) is used for packaging the water pipe (80) and the radio frequency cable assembly (8); one end of the adjusting knob (3) is provided with an external thread (301), the other end of the adjusting knob is provided with a plurality of edges (302) with round corners, the adjusting knob (3) is also provided with a cylindrical step (303), and the cylindrical step (303) is connected with a circular groove (403) on the inner wall of the handle (4) in a rotating fit manner; the outer wall of the adjusting sleeve (10) is provided with a scale slider (5), the needle rod (1) penetrates through the inside of the adjusting sleeve (10) and is fixed with the adjusting sleeve, and when the adjusting knob rotates (3), the adjusting sleeve (10) drives the scale slider (5) to move along the length direction of the handle (4), so that the exposed length of the needle rod (10) can be adjusted.
The scale slider (5) is printed with scale indicating lines (501) which correspond to the length adjusting graduated scale (402) printed on the handle (4), and the exposed length of the needle rod (1) can be seen through comparison between the scale indicating lines and the length adjusting graduated scale.
The needle rod (1), the needle rod fixing seat (6), the water pipe (80), the water pipe fixing seat (7) and the needle rod fixing seat (6) are respectively bonded through glue, so that the sealing performance and the connection strength of the needle rod are ensured;
the radio frequency cable assembly (8) comprises three strands: one of the two strands is a radio frequency wire (802) consisting of a plurality of thin copper wires, the other two strands are T-shaped temperature sensing compensation wires (801), wherein the radio frequency wire (802) is connected with the needle rod (1) in an electric conduction mode through welding, the two strands of T-shaped temperature compensation wires (801) are connected together through welding and riveting, and the two strands of T-shaped temperature sensing compensation wires are assembled inside the needle rod (1) to the inside of the front end of the needle rod (1) through a water pipe fixing seat (7) and a needle rod fixing seat (6).
The radio frequency cable assembly is characterized in that the radio frequency cable (802) and the water pipe (80) are integrally injection-molded, the tail end of the radio frequency cable (802) is connected with a radio frequency host, the tail end of the water pipe (80) is connected with the luer connector (800), and the separation distance between the radio frequency cable assembly (8) and the water pipe (80) can be torn off automatically according to needs.
The tip of the needle rod (1) is composed of a triangular blade (101) which is easy to puncture, and one or more pores (102) are formed on the needle rod (1) and used for the infiltration of physiological saline in the operation process;
the front end of the needle bar (1) is provided with an adhesion-preventing coating (9) which is used for preventing the pathological tissue from adhering to the needle bar in the process of the ablation operation.
The shape of handle (1) is the cylinder type, for 2 semicylinders pass through ultrasonic bonding and link together, handle (1) inside has a plurality of muscle screens for restriction adjustment handle (3), scale sleeve pipe (10), needle bar fixing base (6) remove along handle axial and left-right movement.
The water pipe (8) is a hollow pipe with the inner diameter of 0.5mm and the outer diameter of 1.5 mm.
The diameter of the pore (102) is a small hole with the diameter of 0.3-0.4 mm.
Fig. 1 is an overall schematic view of an adjustable water injection type ablation needle of the present invention: rotatory adjustment handle 3, scale slider 5 drives the adhesion insulating sleeve 2 together and removes to realize that needle bar 1 and insulating sleeve 2 expose the regulation of length relatively, compare through the sign of scale slider 5 and the scale slider chi of handle 4, thereby the clear length of seeing out needle bar 1 metal point and exposing adjustment sleeve 2, the adjustment field of vision is clear and clear.
FIG. 2 is a schematic structural view of the front end needle point of the needle rod 1 of the adjustable water injection type ablation needle of the present invention, wherein the needle point is in a triangular cone shape and is made of SUS630 which is a medical hard stainless steel material to ensure the sharpness and hardness requirements of a doctor in the puncturing process; the back end of the needle bar 1 is a circular tube part, a small hole with the diameter of 0.3-0.4mm is arranged on the circular tube near the needle point, so that the physiological saline can permeate into the premonitory tissue in the operation process, and the needle point and the circular tube are connected together by laser welding to form the needle bar. A T-shaped thermocouple 8-1 is arranged near the needle point, is formed by welding copper and constantan in a cable and is used for measuring the temperature of premonitory tissues in the operation process. The surface of the needle rod is coated with an anti-adhesion conductive coating 9, the coating can be made of chromium nitride or titanium nitride or conductive diamond, and is used for preventing the pathological organ from being adhered to the needle rod due to high-temperature carbonization in the operation process, so that the pathological organ tissue and the normal tissue are brought out in the process of pulling out the needle rod, and the operation safety is ensured.
Fig. 3 is a schematic view of the adjustment part: the front end of the adjusting handle 3 is a star-shaped knob handle, the tail end of the adjusting handle is provided with an external thread structure, and a step cylinder is arranged between the star-shaped knob handle and the external thread and used for being axially fixed with the handle 4 to prevent the knob from axially moving in the handle. The inside internal thread that has of scale slider 5 for carry out the screw thread with adjustment handle 3 and connect soon, it is protruding to have 2 symmetries near adjustment handle end at scale slider 5, and the silk screen has the sign of "a" style of calligraphy, is used for the discernment with handle cooperation back adjustment scale, and simultaneously, this arch also can resistance scale slider 5 carry out axial rotation along the handle. The scale sliding block 5 and the adjusting sleeve 2 are bonded together at the tail end of the scale sliding block 5 through glue. A long U-shaped annular groove is formed in the handle 4, scales are printed on the edge of the annular groove in a threaded mode, and the scales are used for being compared with the linear marks of the scale sliding blocks, so that the length of the needle rod 1 exposed out of the adjusting sleeve 2 can be clearly seen. When the adjusting handle 3 is rotated, the screw drives the scale sliding block 5 and the insulating sleeve 2 which is adhered with the scale sliding block 5 to move together, so that the relative motion of the insulating sleeve 2 and the handle 4 is realized.
Fig. 4 is a schematic view of the needle bar 1, the needle bar holder 6, the water pipe holder 7, the radio frequency line part 8-2 in the water pipe cable, and the water pipe part 8-3 in the water pipe cable mounted on the handle 4. According to the figure: the needle rod 1 is adhered to the needle rod fixing seat by glue, the needle rod fixing seat 6 is arranged on the handle 4, the radio frequency line part 8-2 in the water pipe cable is connected with the needle rod through soldering tin in a welding mode, the T-shaped thermocouple 8-1 in the water pipe cable is fixed 7 in the needle rod fixing seat 6 through a water pipe and extends out of the needle point part of the needle rod 1, and the water pipe part 8-3 in the water pipe cable is adhered to the water pipe fixing seat through glue and is sealed by the glue to guarantee that the needle rod is sealed and does not leak water.
In the process of an ablation operation, a doctor rotates and adjusts the length of the needle rod 1 to be exposed out of the adjusting sleeve 2 through the adjusting handle 3 according to the size of a tumor tested in CT or B-ultrasonic observation in advance, then inserts the adjustable water injection type ablation needle into pathological megatissues, starts a host computer for ablation, directly extracts the adjustable water injection type ablation needle after ablation is finished, and finishes the operation.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention, and the technical contents of the present invention which are claimed are all described in the claims.
Claims (4)
1. An electrode needle system of adjustable water injection ablation electrode needle, characterized by includes: the needle bar fixing seat comprises a needle bar (1), a needle bar fixing seat (6), a water pipe fixing seat (7), a water pipe (80) and a radio frequency cable assembly (8); the needle rod fixing seat (6) is connected with the water pipe fixing seat (7) in a sealing manner, a cavity is formed between the needle rod fixing seat (6) and the water pipe fixing seat (7), the cavity is communicated with a hollow structure inside the needle rod (1), one end of the water pipe (80) is connected with the water pipe fixing seat (7) to enable the water pipe (80) to be communicated with the inside of the needle rod (1), the tip end of the needle rod (1) is composed of a triangular blade (101) easy to puncture, one or more fine holes (102) are formed in the needle rod (1), the fine holes (102) are communicated with the hollow structure inside the needle rod (1) and further communicated with the water pipe (80) and used for permeating physiological saline in the operation process; the radio frequency cable assembly (8) comprises three strands: one of the two lines is a radio frequency line (802) consisting of a plurality of thin copper wires, and the other two lines are T-shaped temperature sensing compensating wires (801), wherein the radio frequency line (802) is connected with the needle rod (1) in an electric conduction mode through welding, the two lines of T-shaped temperature compensating wires (801) are connected together through welding and riveting, and are assembled inside the needle rod (1) to the inside of the front end of the needle rod (1) through a water pipe fixing seat (7) and a needle rod fixing seat (6); the needle rod (1), the needle rod fixing seat (6), the water pipe (80), the water pipe fixing seat (7) and the needle rod fixing seat (6) are respectively bonded through glue, so that the sealing performance and the connection strength of the needle rod are ensured; the radio frequency cable (802) and the water pipe (80) are integrally injection-molded, the tail end of the radio frequency cable (802) is connected with a radio frequency host, the tail end of the water pipe (80) is connected with a luer connector (800), and the separation distance between the radio frequency cable assembly (8) and the water pipe (80) can be automatically torn according to needs; the front end of the needle bar (1) is provided with an adhesion-preventing coating (9) for preventing the pathological tissue from adhering to the needle bar in the process of an ablation operation; the water pipe (80) is a hollow pipe with the inner diameter of 0.5mm and the outer diameter of 1.5 mm; the diameter of the pore (102) is a small hole with the diameter of 0.3-0.4 mm.
2. The electrode needle system of the adjustable water injection ablation electrode needle as claimed in claim 1, wherein: the inner wall of the needle bar fixing seat (6) is provided with a step (601) for positioning with the water pipe fixing seat (7).
3. The electrode needle system of the adjustable water injection ablation electrode needle as claimed in claim 1, wherein: the needle bar fixing seat (6) is provided with a liquid through small hole which is communicated with the hollow structure in the needle bar (1) and is used for forming a channel of physiological saline.
4. The electrode needle system of the adjustable water injection ablation electrode needle as claimed in claim 1, wherein: a through line small hole is formed in the water pipe fixing seat (7), and a compensation lead (801) for T-shaped temperature sensing passes through the water pipe fixing seat (7) and the needle rod fixing seat (6) to the front end inside the needle rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323742.7A CN106037927B (en) | 2016-05-16 | 2016-05-16 | Electrode needle system of adjustable water injection ablation electrode needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610323742.7A CN106037927B (en) | 2016-05-16 | 2016-05-16 | Electrode needle system of adjustable water injection ablation electrode needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106037927A CN106037927A (en) | 2016-10-26 |
| CN106037927B true CN106037927B (en) | 2020-07-24 |
Family
ID=57176285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610323742.7A Active CN106037927B (en) | 2016-05-16 | 2016-05-16 | Electrode needle system of adjustable water injection ablation electrode needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106037927B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464186B (en) | 2017-09-08 | 2023-12-22 | 泽丹医疗股份有限公司 | Device and method for treating lung tumors |
| CN116327350B (en) * | 2023-05-24 | 2023-08-22 | 浙江伽奈维医疗科技有限公司 | Ablation needle assembly and ablation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176123Y (en) * | 1993-05-24 | 1994-09-07 | 西安市三兴科技实业公司 | Radiofrequency cardiac catheter |
| EP0868884A2 (en) * | 1997-04-01 | 1998-10-07 | Axel Muntermann | Apparatus and method for catheter ablation |
| CN1554314A (en) * | 2003-12-25 | 2004-12-15 | 上海交通大学 | Single needle water cooling type radio frequency ablation electrode |
| CN202113165U (en) * | 2011-06-27 | 2012-01-18 | 北京畅想天行医疗技术有限公司 | Radio-frequency ablation electrode needle |
| CN206044724U (en) * | 2016-05-16 | 2017-03-29 | 安隽医疗科技(南京)有限公司 | A kind of electrode needle system of adjustable water filling ablating electrode pin |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6666862B2 (en) * | 2001-03-01 | 2003-12-23 | Cardiac Pacemakers, Inc. | Radio frequency ablation system and method linking energy delivery with fluid flow |
| CN100448414C (en) * | 2007-01-26 | 2009-01-07 | 江苏天马高科技有限责任公司 | Multi-needle cooled tip electrodes |
| CN102228392B (en) * | 2011-06-27 | 2013-01-09 | 北京畅想天行医疗技术有限公司 | Radio-frequency ablation electrode needle |
-
2016
- 2016-05-16 CN CN201610323742.7A patent/CN106037927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176123Y (en) * | 1993-05-24 | 1994-09-07 | 西安市三兴科技实业公司 | Radiofrequency cardiac catheter |
| EP0868884A2 (en) * | 1997-04-01 | 1998-10-07 | Axel Muntermann | Apparatus and method for catheter ablation |
| CN1554314A (en) * | 2003-12-25 | 2004-12-15 | 上海交通大学 | Single needle water cooling type radio frequency ablation electrode |
| CN202113165U (en) * | 2011-06-27 | 2012-01-18 | 北京畅想天行医疗技术有限公司 | Radio-frequency ablation electrode needle |
| CN206044724U (en) * | 2016-05-16 | 2017-03-29 | 安隽医疗科技(南京)有限公司 | A kind of electrode needle system of adjustable water filling ablating electrode pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106037927A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106037926B (en) | Needle bar telescopic adjusting system of adjustable water injection ablation electrode needle | |
| CN105943159B (en) | A kind of adjustable water filling ablating electrode needle | |
| EP2627276B1 (en) | Ablation electrode assemblies | |
| CN106037927B (en) | Electrode needle system of adjustable water injection ablation electrode needle | |
| CN211985646U (en) | Plasma surgical tool | |
| CN102429705B (en) | For operating minimally-invasive scalpel | |
| CN206007288U (en) | Flexible puncture sheath | |
| CN110236671A (en) | A kind of tumor microwave ablation needle with film resistor multi-point temperature measurement function | |
| CN209269826U (en) | A kind of subcutaneous puncture guide bracket | |
| CN201208301Y (en) | Multiple electrode memory metal brain tumor local temperature-controlled heat treatment electrode | |
| CN105708453A (en) | Location puncture electrode | |
| JP4138468B2 (en) | Microwave surgical device | |
| CN106037834A (en) | Localizable conveying system of heart occluder device | |
| WO2023125356A1 (en) | Biopsy device | |
| CN219354133U (en) | Nerve monitoring system suitable for thyroid tumor ablation | |
| KR20190000911U (en) | Ultrasonic osteotom cutter handle | |
| US20220354534A1 (en) | Auxilliary device and auxilliary method for epidural anesthesia needle placement | |
| CN206044724U (en) | A kind of electrode needle system of adjustable water filling ablating electrode pin | |
| CN116327350A (en) | Ablation needle assembly and ablation system | |
| EP3360500B1 (en) | Cannula for an electrode assembly for radiofrequency ablation of tissue that can be selectively operated with one or more active tips | |
| CN206120443U (en) | Water injection ablation electrode needle with adjustable | |
| CN209499889U (en) | A kind of interventional minimally-invasive subtracts the ablation needle of tire application | |
| CN210811492U (en) | Puncture needle for guiding electrode and electrode conveying device | |
| CN209316010U (en) | It is a kind of can precise positioning 3D puncture needle | |
| CN106308928A (en) | Ablation device having mapping function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Zhiming Inventor before: Chen Zhiming Inventor before: Li Linhua Inventor before: Sheng Guoyun |