CN114533256A - Monopole radio frequency ablation catheter system - Google Patents
Monopole radio frequency ablation catheter system Download PDFInfo
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- CN114533256A CN114533256A CN202210047893.XA CN202210047893A CN114533256A CN 114533256 A CN114533256 A CN 114533256A CN 202210047893 A CN202210047893 A CN 202210047893A CN 114533256 A CN114533256 A CN 114533256A
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- 238000007674 radiofrequency ablation Methods 0.000 title claims abstract description 34
- 230000005404 monopole Effects 0.000 title description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 42
- 239000010935 stainless steel Substances 0.000 claims abstract description 42
- 238000011282 treatment Methods 0.000 claims abstract description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
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- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 5
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- 206010046996 Varicose vein Diseases 0.000 claims description 7
- 241000316887 Saissetia oleae Species 0.000 claims description 6
- 238000011298 ablation treatment Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002161 passivation Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 5
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
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- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
- 206010029107 Respiratory Tract Neoplasms Diseases 0.000 claims description 2
- 230000001575 pathological effect Effects 0.000 claims description 2
- 238000002679 ablation Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
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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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
-
- 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
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/1253—Generators therefor characterised by the output polarity monopolar
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
- A61M2025/0046—Coatings for improving slidability
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
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- Surgical Instruments (AREA)
Abstract
The invention provides a monopolar radiofrequency ablation catheter system which is characterized by comprising a catheter module, a sleeve module, a cable module, a connecting module and an electrode tip, wherein the sleeve module is arranged on the catheter module; the catheter module comprises a catheter; the sleeve module comprises a fixed sleeve and a heat-shrinkable sleeve; the cable module comprises a stainless steel cable and a cable wire; the connecting module comprises a handle, a plug and a connector. The electrode tip is provided with a plurality of models, is suitable for various conditions, and ensures longer ablation length in unit time and higher treatment speed; the anti-adhesion coating is arranged, so that the problem of adhesion in the operation process can be prevented; the PTFE outer sleeve enables the catheter to have better lubricity and is more convenient to enter a cavity channel; the O-shaped ring can help a doctor to record the position of the catheter entering the human body, so that the observation is facilitated; the assembly of the electrode tip and the PTFE has no clearance, no glue is required, the sealing performance is better, the installation procedure is simple, and the flexibility of the head end is better; the internal cable has a temperature measuring function.
Description
Technical Field
The invention relates to the technical field of medical radio frequency ablation, in particular to a monopolar radio frequency ablation catheter system.
Background
Minimally invasive ablation is a development trend in the medical industry, wherein thermal ablation achieved through various ablation electrodes is the mainstream of ablation treatment means due to the fact that the effect is definite.
The respiratory tract is the passage through which the flow of air passes as the lungs breathe. The respiratory tract is divided into an upper part and a lower part: nose, throat and throat are called upper respiratory tract. The trachea, the bronchus and the lung organ, which are called as the lower respiratory tract blood vessel tumor, can cause airway obstruction with different degrees to cause serious dyspnea, cause complications such as obstructive pulmonary inflammation and the like, and seriously threaten the life of a patient. Varicosity refers to the tortuosity and expansion of veins caused by blood stasis, weak vein walls and other factors; varicose veins can occur in various parts of the body, and leg varicose veins are common in clinic.
In recent years, with the comprehensive application of modern advanced equipment technology, the ablation treatment of respiratory tumors and varicose veins has obvious advantages, but at present, the ablation treatment means are single and limited, and the existing radio frequency ablation catheter only has one type of electrode tip, so that the use cost is high, the ablation range in unit time is limited, the flexibility and the lubricity are poor, and the adhesion problem can occur in the operation.
Disclosure of Invention
The present invention is directed to a monopolar radiofrequency ablation catheter system, which solves the problems set forth above in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a monopolar radiofrequency ablation catheter system is characterized by comprising a catheter module, a sleeve module, a cable module, a connecting module and an electrode head 1; the catheter module comprises a catheter 3; the sleeve module comprises a fixed sleeve 5 and a heat-shrinkable sleeve 7; the cable module comprises a stainless steel cable 4 and a cable wire 9; the connecting module comprises a handle 6, a plug 8 and a connector 10; the electrode tip 1 is arranged at the far end of the conduit 3, the stainless steel cable 4 is arranged in the conduit 3, the plug 8 and the handle 6 are wrapped by a heat-shrinkable sleeve 7, the fixed sleeve 5 is connected with the handle 6, the conduit 3 is sleeved in the fixed sleeve, the tail end of the plug 8 is connected with the cable 9, and the tail end of the cable 9 is connected with the connector 10.
The electrode tip 1 is in a columnar shape with a passivated round head and comprises a plurality of models, specifically, the length of the electrode tip is 5mm, 10mm, 15mm or 20 mm; the electrode head 1 is made of SUS316L stainless steel, and the surface of the electrode head is subjected to HRC40-50 heat treatment: the surface of the electrode tip 1 is also subjected to electrolytic polishing and passivation treatment, and the head end is subjected to anti-adhesion coating treatment; the electrode tip 1 and the conduit 3 are connected in a welding mode, no gap exists, no glue is applied, the sealing performance is better, and the flexibility of the head end is better.
The catheter 3 comprises a plurality of lengths, including in particular lengths of 800mm or 1200 mm; the catheter 3 comprises an outer catheter 31 which is a PTFE outer sleeve, has good lubricity and is more convenient to enter a cavity; the O-shaped ring 2 is sleeved on the conduit 3 and is specifically positioned near the electrode tip 1, the O-shaped ring 2 is a rubber ring and has elasticity, specifically red opaque silica gel, and the red and black scales on the surface of the stainless steel cable 4 are combined to help a doctor to record the position of the conduit entering a human body.
The steel wire material of the stainless steel cable 4 is SUS 316L; stainless steel cable 4 surface cladding one deck PTFE insulating layer, the insulating layer surface is printed on with red black scale alternately, 4 smooth, the scratch damage of no scratch in stainless steel cable surface.
The inside and the outer surface of the fixed sleeve 5 are cleaned by ultrasonic cleaning, so that no debris or stain is ensured.
The handle 6 is a banana socket, so that the surface is smooth, and no burrs or burrs are formed.
The heat-shrinkable sleeve 7 is made of a heat-shrinkable material, and at least can be sleeved on the peripheries of the handle 6 and the plug 8 before heat-shrinking; the handle 6 and the plug 8 are directly connected.
The electrical cable 9 comprises a patch cable assembly; the handle end is a copper banana head, the far end is an ABS wrapped plug, the surface of the cable 9 is covered with a black TPU insulating layer, and the surface of the cable is smooth and free of scratch damage.
The installation method of the monopolar radiofrequency ablation catheter system comprises the following steps:
carrying out heat treatment, electrolytic polishing treatment and passivation treatment on the electrode tip 1, and welding the electrode tip 1 and the stainless steel cable 4; the stainless steel cable 4 is inserted into an inner hole of the electrode and is firmly welded, and the stainless steel cable does not fall off; after the electrode head 1 is welded with the stainless steel cable 4, the surface of the electrode head 1 and a counter bore in the electrode head 1 are noticed not to have welding spots and scorch; inserting a stainless steel cable firmly welded to the electrode into the outer guide tube 31; the fixed sleeve 5 is sleeved into the outer guide pipe 31, and the stainless steel cable 4 is inserted into an inner hole of the banana socket and is firmly pressed; the outer guide pipe 31 is inserted into a counter bore in the electrode head 1 and is fixed by glue; one end of the fixed sleeve 5 is welded with the outer diameter of the banana jack, and the other end is in compression joint with the outer circumference of the outer conduit 31; inserting the banana plug at one end of the connector 10 into the banana jack bore of the catheter assembly; the heat-shrinkable sleeve 7 is sleeved, and the heat shrinkage is firm.
The monopolar radiofrequency ablation catheter system is applied to ablation treatment of pathological tissues in a human body cavity, including varicosity treatment and respiratory tract tumor treatment.
Compared with the prior art, the invention has the beneficial effects that:
the electrode tip is provided with a plurality of models, is suitable for various conditions, ensures longer ablation length in unit time, enlarges the ablation range and has higher treatment speed; the anti-adhesion coating is arranged, so that the problem of adhesion in the operation process can be prevented; the PTFE outer sleeve enables the catheter to have better lubricity and is more convenient to enter a cavity channel; the surface is provided with red and black scales and a red sheath-forming prompt, so that the insertion depth of the catheter can be indicated; the O-shaped ring can help a doctor to record the position of the catheter entering the human body, so that the observation is facilitated; the two lengths of the catheter allow the invention to be used on different parts of the human body; the invention is provided with the bendable stainless steel cable, and the plasticity of the cable enables the guide pipe to adapt to more parts; the assembly of the electrode tip and the PTFE has no clearance, no glue is required, the sealing performance is better, the installation procedure is simple, and the flexibility of the head end is better; the internal cable has a temperature measuring function.
The catheter of the invention is applicable to the application range that radio frequency energy is transmitted to the electrode at the top of the catheter to generate heat to burn and coagulate, thereby carrying out the ablation treatment of varicose veins and tumor tissues of respiratory tracts.
Drawings
Fig. 1 is a schematic view of a monopolar radiofrequency ablation catheter of the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of the monopolar radiofrequency ablation catheter of the present invention;
FIG. 3 is a schematic view of a portion of the monopolar radiofrequency ablation catheter of the present invention;
FIG. 4 is a schematic view of a partial weld of an electrode tip of the monopolar radiofrequency ablation catheter of the present invention;
FIG. 5 is a schematic view of the outer catheter structure of the monopolar RF ablation catheter of the present invention;
fig. 6 is a schematic structural view of a stainless steel cable of the monopolar radiofrequency ablation catheter of the present invention;
FIG. 7 is a schematic view of the fixation sleeve structure of the monopolar RF ablation catheter of the present invention;
FIG. 8 is a schematic view of the handle structure of the monopolar radio frequency ablation catheter of the present invention;
FIG. 9 is a schematic cross-sectional view of a handle of the monopolar radio frequency ablation catheter of the present invention;
FIG. 10 is a schematic view of the heat shrinkable sleeve of the monopolar radiofrequency ablation catheter of the present invention;
FIG. 11 is a frame view of the monopolar radio frequency ablation catheter system of the present invention;
in the figure: A. a welding area; B. a steel wire; C. a PTFE insulating layer; 1. an electrode tip; 2. an O-shaped ring; 3. a conduit; 31. an outer catheter; 4. a stainless steel cable; 5. fixing the sleeve; 6. a handle; 7. heat-shrinkable tubing; 8. a plug; 9. a cable wire; 10. a connector is provided.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the scope of the present invention.
Examples
As shown in fig. 11, a monopolar radiofrequency ablation catheter system comprises a catheter module, a sleeve module, a cable module, a connecting module and an electrode head 1; the catheter module comprises a catheter 3; the sleeve module comprises a fixed sleeve 5 and a heat-shrinkable sleeve 7; the cable module comprises a stainless steel cable 4 and a cable wire 9; the connecting module comprises a handle 6, a plug 8 and a connector 10; as shown in fig. 1-3, the electrode tip 1 is disposed at the distal end of the catheter 3, the stainless steel cable 4 is disposed in the catheter 3, the plug 8 and the handle 6 are wrapped by a heat-shrinkable sleeve 7, the fixing sleeve 5 is connected to the handle 6, the catheter 3 is sleeved in the fixing sleeve, the cable 9 is connected to the tail end of the plug 8, and the connector 10 is connected to the tail end of the cable 9.
As shown in fig. 4, the electrode tip 1 is in a cylindrical shape with a blunt rounded head, and includes a plurality of types, specifically, lengths of 5mm, 10mm, 15mm or 20 mm; the electrode head 1 is made of SUS316L stainless steel, and the surface of the electrode head is subjected to HRC40-50 heat treatment: the surface of the electrode tip 1 is also subjected to electrolytic polishing and passivation treatment, and the head end is subjected to anti-adhesion coating treatment; the electrode tip 1 and the conduit 3 are connected in a welding mode, no gap exists, no glue is applied, the sealing performance is better, and the flexibility of the head end is better.
As shown in fig. 5, the catheter 3 comprises a plurality of lengths, including in particular lengths of 800mm or 1200 mm; the catheter 3 comprises an outer catheter 31 which is a PTFE outer sleeve, has good lubricity and is more convenient to enter a cavity; the O-shaped ring 2 is sleeved on the guide pipe 3 and is specifically positioned near the electrode tip 1, the O-shaped ring 2 is a rubber ring and has elasticity, specifically red opaque silica gel, and the red and black scales on the surface of the stainless steel cable are combined to help a doctor to record the position of the guide pipe entering a human body.
As shown in fig. 6, the steel wire material of the stainless steel cable 4 is SUS 316L; 4 surperficial cladding one deck PTFE insulating layer of stainless steel cable, the insulating layer surface is printed on with red black scale alternately, 4 surperficial smoothness, the scratch damage of no scratch of stainless steel cable.
As shown in fig. 7, the inside and the outside surface of the fixing sleeve 5 are cleaned by ultrasonic cleaning, so as to ensure that no debris or dirt exists.
As shown in fig. 8-9, the handle 6 is a banana jack, ensuring smooth surface, no bur, no burr.
As shown in fig. 10, the heat-shrinkable sleeve 7 is made of a heat-shrinkable material, and at least can be fitted around the outer peripheries of the handle 6 and the plug 8 before heat-shrinking; the handle 6 and the plug 8 are directly connected.
The electrical cable 9 comprises a patch cable assembly; the handle end is a copper banana head, and the far end is an ABS (acrylonitrile butadiene styrene) wrapped plug; the surface of the cable 9 is covered with a black TPU insulating layer, and the surface of the cable is smooth and has no scratch damage.
The installation method of the monopolar radiofrequency ablation catheter system comprises the following steps:
carrying out heat treatment, electrolytic polishing treatment and passivation treatment on the electrode tip 1, and welding the electrode tip 1 and the stainless steel cable 4; the stainless steel cable 4 is inserted into an inner hole of the electrode and is firmly welded, and the stainless steel cable does not fall off; after the electrode head 1 is welded with the stainless steel cable 4, the surface of the electrode head 1 and a counter bore in the electrode head 1 are noticed not to have welding spots and scorch; inserting a stainless steel cable firmly welded to the electrodes into the outer guide tube 31; the fixed sleeve 5 is sleeved into the outer guide pipe 31, and the stainless steel cable 4 is inserted into an inner hole of the banana socket and is firmly pressed; the outer guide pipe 31 is inserted into a counter bore in the electrode head 1 and is fixed by glue; one end of the fixed sleeve 5 is welded with the outer diameter of the banana jack, and the other end is in compression joint with the outer circumference of the outer conduit 31; inserting the banana plug at one end of the connector 10 into the banana jack bore of the catheter assembly; and sleeving the heat-shrinkable sleeve 7, and performing heat shrinkage firmly.
Note that when the electrode is tested according to appendix F of GB18457-2015, it is preferable that the electrode is immersed in a portion having no traces of corrosion.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the preferred embodiments of the invention and described in the specification are only preferred embodiments of the invention and are not intended to limit the invention, and that various changes and modifications may be made without departing from the novel spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A monopolar radiofrequency ablation catheter system, comprising a catheter module, a cannula module, a cable module, a connection module and an electrode tip (1); the catheter module comprises a catheter (3); the sleeve module comprises a fixed sleeve (5) and a heat-shrinkable sleeve (7); the cable module comprises a stainless steel cable (4) and a cable wire (9); the connecting module comprises a handle (6), a plug (8) and a connector (10); the electrode tip (1) is arranged at the far end of the conduit (3), the stainless steel cable (4) is arranged in the conduit (3), the plug (8) and the handle (6) are wrapped by a heat-shrinkable sleeve (7) outside the plug and the handle, the fixed sleeve (5) is connected with the handle (6), the conduit (3) is sleeved in the fixed sleeve, the tail end of the plug (8) is connected with the cable (9), and the tail end of the cable (9) is connected with the connector (10).
2. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the electrode tip (1) is in a columnar shape with a passivated pointed end and comprises a plurality of models, specifically, the length of the electrode tip is 5mm, 10mm, 15mm or 20 mm; the electrode head (1) is made of SUS316L stainless steel, the surface of the electrode head is subjected to HRC40-50 heat treatment, electrolytic polishing and passivation treatment, and an anti-adhesion coating is arranged on the surface; the electrode tip (1) and the guide pipe (3) are connected in a welding mode without gaps and glue.
3. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the catheter (3) comprises a plurality of lengths, in particular 800mm or 1200 mm; the catheter (3) comprises an outer catheter (31) which is a PTFE outer sleeve; the guide pipe (3) is sleeved with an O-shaped ring (2), and is specifically positioned near the electrode tip (1), wherein the O-shaped ring (2) is a rubber ring and has elasticity, and is specifically red opaque silica gel.
4. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the steel wire material of the stainless steel cable (4) is SUS 316L; stainless steel cable (4) surface cladding one deck PTFE insulating layer, the insulating layer surface is printed with red black scale alternately, stainless steel cable (4) surface is smooth, do not have the scratch damage.
5. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the inner part and the outer surface of the fixed sleeve (5) are cleaned by ultrasonic cleaning.
6. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the heat-shrinkable sleeve (7) is made of a heat-shrinkable material, and at least can be sleeved on the peripheries of the handle (6) and the plug (8) before heat-shrinking; the handle (6) and the plug (8) are directly connected.
7. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the electrical cable (9) comprises a patch cable assembly; the handle end is a copper banana head, and the far end is an ABS (acrylonitrile butadiene styrene) wrapped plug; the surface of the cable (9) is covered with a black TPU insulating layer, and the surface of the cable is smooth and free of scratch damage.
8. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the installation method of the monopolar radiofrequency ablation catheter system comprises the following steps:
carrying out heat treatment, electrolytic polishing treatment and passivation treatment on the electrode tip (1), and welding the electrode tip (1) and the stainless steel cable (4); the stainless steel cable (4) is inserted into an inner hole of the electrode and is firmly welded, and the stainless steel cable does not fall off; after the electrode tip (1) is welded with the stainless steel cable (4), the surface of the electrode tip (1) and a counter bore in the electrode tip (1) are noticed not to have welding spots and scorch; inserting a stainless steel cable firmly welded with the electrode into the outer guide pipe (31); the fixed sleeve (5) is sleeved into the outer guide pipe (31), and the stainless steel cable (4) is inserted into an inner hole of the banana socket and is firmly pressed; the outer guide pipe (31) is inserted into a counter bore in the electrode head (1) and is fixed by glue; one end of the fixed sleeve (5) is welded with the outer diameter of the banana socket, and the other end of the fixed sleeve is in compression joint with the outer circumference of the outer conduit (31); inserting a banana plug at one end of the connector (10) into a banana jack bore of a catheter assembly; the sleeve is sleeved into the heat-shrinkable sleeve (7) and is firmly heat-shrunk.
9. The monopolar radiofrequency ablation catheter system of claim 1, wherein: the monopolar radiofrequency ablation catheter system is applied to ablation treatment of pathological tissues in a human body cavity, including varicosity treatment and respiratory tract tumor treatment.
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| CN114533256B (en) | 2024-04-19 |
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