CN114557765A - Bipolar three-way radio frequency ablation catheter system - Google Patents
Bipolar three-way radio frequency ablation catheter system Download PDFInfo
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- CN114557765A CN114557765A CN202210047881.7A CN202210047881A CN114557765A CN 114557765 A CN114557765 A CN 114557765A CN 202210047881 A CN202210047881 A CN 202210047881A CN 114557765 A CN114557765 A CN 114557765A
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- 210000001035 gastrointestinal tract Anatomy 0.000 claims description 12
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- 238000011298 ablation treatment Methods 0.000 claims description 3
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- 238000009434 installation Methods 0.000 claims description 3
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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
- A61B18/1206—Generators therefor
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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
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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
- A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
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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
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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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
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
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Abstract
The invention provides a bipolar three-way radio frequency ablation catheter system which is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head; the catheter module comprises a catheter; the cable module cable wires; the connecting module comprises a Y-shaped connector and a plug; the electrode heads comprise a first electrode head and a second electrode head; first electrode tip and second electrode tip pass through binding post and the cable is connected and mutual insulation respectively, set up in the pipe distal end, the pipe near-end is connected Y type connector, Y type connector one end is connected the cable conductor is connected then the plug, the other end is connected the handle is connected then to the cable conductor. The invention improves the appearance structure of the catheter, is more stable, and the head end is not easy to fall off; the PI pipe is arranged inside the medical needle, has the temperature measuring function, and can be used for a guide wire to pass through for application such as drug delivery, biopsy and the like; the soft material at the front end of the invention is PEBAX, which is more convenient to enter the cavity and does not harm human tissues.
Description
Technical Field
The invention relates to the field of radio frequency ablation, in particular to a bipolar three-way radio frequency ablation catheter system.
Background
The gastrointestinal vascular tumor is a vascular tumor originated from the gastrointestinal tract or a systemic or systemic vascular tumor disease affecting the gastrointestinal tract, belongs to a digestive system disease, and is mainly manifested by bleeding, abdominal pain, abdominal distension and the like. Digestive tract tumors are common diseases and frequently encountered diseases clinically, and the incidence rate of benign tumors is generally the highest. However, in recent years, the incidence of digestive tract malignant tumors has been increasing. The digestive tract tumors are commonly polyps, lipomas, gastrointestinal stromal tumors, cancers, sarcomas and the like. The main pathogenic factors are related to long-term irregular dietary habits, smoking and drinking, stimulation of chronic inflammation caused by bacteria and viruses, genetic factors and the like.
Minimally invasive ablation is a development trend of the medical industry, wherein thermal ablation is the mainstream of ablation treatment means due to the definite effect of the thermal ablation. Among them, catheter-like ablation electrodes have a wide development space, and among them, radio-frequency catheter electrodes have incomparable advantages.
The radiofrequency ablation catheter is mainly applied to the ablation of tissues in cavities such as intestines, stomach, digestive tract and the like, and has good curative effect. The maturity of the radio frequency ablation catheter is the highest in the technical layer, and the radio frequency ablation catheter has been developed for many years, both a soft electrode and a hard electrode are very reliable, and the flexible electrode is generally used for treating the gastrointestinal tract and the cavity in the digestive tract, but the existing radio frequency ablation catheter has high use cost, poor flexibility and lubricity, is not stable enough, is easy to fall off and easily generates the problem of adhesion.
Disclosure of Invention
The present invention is directed to a bipolar three-way rf ablation catheter system that solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bipolar three-way radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head 1; the catheter module comprises a catheter 2; the cable module cable wires 3; the connecting module comprises a Y-shaped connector 5 and a plug 6; the electrode head 1 comprises a first electrode head 11 and a second electrode head 12, so that the ablation length per unit time is longer and the treatment speed is higher; first electrode tip 11 and second electrode tip 12 are connected respectively and mutual insulation through binding post and cable, set up in 2 distal ends of pipe, 2 near-ends of pipe are connected Y type connector 5, 5 one end of Y type connector is connected cable conductor 3 connects then plug 6, and the other end is connected cable conductor 3 connects handle 4 then.
Both ends of the electrode tip 1 are provided with square bulges and triangular bulges; the electrode head 1 comprises a plurality of specifications, specifically comprising a diameter of 2.7 multiplied by 5mm and a diameter of 2.7 multiplied by 8 mm; the electrode head 1 is made of SUS316L stainless steel, has a smooth surface, no rust spots, no scratches and no damage, and is subjected to electrolytic polishing and passivation treatment on the surface, and the head end is subjected to coating anti-adhesion treatment; the surface and the inside are cleaned by ultrasonic cleaning, so that no debris or stain is ensured.
The first electrode tip 11 and the second electrode tip 12 are welded to two different-color enameled copper alloy wires 13, respectively, and are separated and kept insulated from each other.
The catheter 2 comprises an elastic catheter 21, an inner sleeve 22 and an outer catheter 23, wherein the inner sleeve 22 is inserted into an inner hole at the head end of the elastic catheter 21 at the front end of the outer catheter 23; a neutral wire 14 is arranged between the inner sleeve 22 and the outer guide pipe 23, the cable material is SUS316L/SUS304 stainless steel wire, and two different-color enameled copper alloy wires 13.
The rear part of the outer conduit 23 is blue nylon, the middle layer in the inner part of the outer conduit is a stainless steel corrugated braided tube, namely a stainless steel corrugated tube 24, and the head part is a gray nylon elastomer; the length of the outer conduit 23 comprises 900mm and 1800 mm; the rear part and the head part of the outer conduit 23 are welded in a heat sealing way, so that the falling-off is prevented, the surface is smooth, and no scratch, damage or stain is generated. The head end of the outer catheter 23 is made of PEBAX material, and the tail end of the outer catheter is made of nylon material.
A heat-shrinkable tube is sleeved on the welding spot of the cable 3; the circuit is conducted, and the conditions of open circuit, short circuit or poor insulation are avoided; and injection molding, wherein the molding is free of flash, material grains or shrinkage.
The Y-shaped connector 5 is a Y-shaped luer connector, is transparent PC/PVC, is internally provided with a cavity channel, and has a smooth and burr-free surface; the Y-connector 5 comprises a first heat shrink 51, a second heat shrink 52, a third heat shrink 53, a first hose 54, a second hose 55, a first terminal 56, a second terminal 57 and a bushing 58, the first connecting terminal 56 and the second connecting terminal 57 are respectively connected with two different-color enameled copper alloy wires 13, the first hose 54 is connected with the second hose 55, one end of the second hose 55 is sleeved with the Y-shaped connector 5 and is fixedly connected with the Y-shaped connector by glue, the bushing 58 tightens the first terminal 56 and the second terminal 57 outward, and fixed by glue, the first heat-shrinkable tubing 51 is heat-shrinkable tubing of 4mm tightly sleeving the outer catheter 23, said second 52 and third 53 heat shrink tubing proximate the terminals, said second 52 being an 8mm heat shrink tubing and said third 53 being an 11mm heat shrink tubing; the heat-shrinkable sleeve is made of black PE sleeve, and the inner surface and the outer surface of the heat-shrinkable sleeve are cleaned by ultrasonic cleaning; the liner 58 has a PI tube disposed therein.
The first hose 54 and the second hose 55 are made of transparent PVC materials, and the surfaces of the hoses are free of stains and spots.
The plug 6 comprises a plug shell 61, a plug inner shell 62, a pin 63, an insulator 64, a cable clamp 65 and a tail nut 66; the plug inner shell 62 is arranged inside the plug shell 61, the front end of the insulator 64 is provided with the plug pin 63, the tail end of the plug inner shell 62 is provided with the tail nut 66, and the cable clamp 65 is arranged at the tail end of the insulator 64; one end of the plug shell 61 is provided with a connecting surface I, and the connecting surface I allows a draft angle of 0.3-0.6 degrees.
The installation method of the bipolar three-way radio frequency ablation catheter system comprises the following steps:
firmly welding the first electrode tip 11 and the enameled copper alloy wire 13; the second electrode head 12 is firmly welded with the other enameled copper alloy wire 13; inserting the inner sleeve 22 into the inner hole at the head end of the elastic catheter 21 at the front end of the outer catheter, and tightly fitting and bonding the inner sleeve with glue; after the two electrode tips are assembled, the two electrode tips are fixed by glue, and the three-tooth buckle bending inner buckle treatment and the end face closing treatment are carried out, so that the catheter and the electrode tips are kept smooth without scratches and strains; 1 stainless steel wire and 2 enameled copper wires penetrate through the Y-shaped tee joint, the outer guide pipe 23 and the inner guide pipe 25 are respectively inserted into a counter bore with the size of the Y-shaped tee joint, 3 cables are tightened, the stainless steel wire and the enameled copper wires are inserted into a first connecting terminal 56, and the other enameled copper wire is inserted into a second connecting terminal 57 and is firmly pressed and welded; a second heat shrink 52 heat shrink terminal; the bushing 58 tightly lines the wiring terminal outwards, the wiring terminal is fixed by glue, and the bushing 58 is connected with an inner hole of the Y-shaped tee; one end of the second hose 55 is sleeved with the Y-shaped tee joint and is fixedly connected with the Y-shaped tee joint through glue; the first hose 54 is fixedly connected with the second hose 55 and the cable by glue; the outer catheter 24 and the inner catheter 22 are respectively fixed on the Y-shaped tee by glue.
The bipolar three-way radio frequency ablation catheter is suitable for ablation treatment of pathological tissues in a human body cavity, including digestive tract tumor treatment and gastrointestinal tract tumor treatment.
Compared with the prior art, the invention has the following beneficial effects:
the invention improves the appearance structure of the catheter, is more stable, and the head end is not easy to fall off; the PI pipe is arranged inside the medical needle, has the temperature measuring function, and can be used for a guide wire to pass through for application such as drug delivery, biopsy and the like; the invention is provided with the coating, has the function of preventing adhesion, and the electrode length is provided with various specifications, thus being suitable for different parts of human body; the front end of the catheter adopts a soft material PEBAX, the head end of the outer catheter adopts the PEBAX material, and the tail end of the outer catheter adopts a nylon material, so that the catheter is more convenient to enter a cavity and does not damage human tissues; the fixing mode of the interior of the ablation electrode catheter is improved, and the three cables are fixed in a terminal crimping mode, so that the fixing is firmer and more convenient; the invention is provided with two electrode tips, so that the ablation range in unit time is wider, and the treatment speed is faster.
Drawings
FIG. 1 is a schematic view of the overall structure of a bipolar three-way RF ablation catheter of the present invention;
FIG. 2 is a schematic view of the internal structure of the Y-connector of the bipolar three-way RF ablation catheter of the present invention;
FIG. 3 is a schematic view of the electrode tip connection of the bipolar three-way RF ablation catheter of the present invention;
FIG. 4 is a schematic view of the overall structure of the plug of the bipolar three-way RF ablation catheter of the present invention;
FIG. 5 is a schematic view of a cross-sectional configuration of a plug of the bipolar three-way RF ablation catheter of the present invention;
FIG. 6 is a schematic view of the color zone location of the bipolar three-way RF ablation catheter of the present invention;
FIG. 7 is a schematic perspective view of a terminal of the bipolar three-way RF ablation catheter of the present invention;
FIG. 8 is a side view of the wire connection terminal of the bipolar three-way RF ablation catheter of the present invention;
FIG. 9 is a schematic view of the overall structure of the electrode head of the bipolar three-way RF ablation catheter of the present invention;
FIG. 10 is a key diagram of the bipolar three-way RF ablation catheter of the present invention;
FIG. 11 is a schematic view of the overall framework of the bipolar three-way RF ablation catheter system of the present invention;
in the figure: F. key positions; G. a grey nylon region; H. a blue nylon region; I. a connecting surface; 1. an electrode tip; 11. a first electrode tip; 12. a second electrode tip; 13. enamelling a copper alloy wire; 14. a neutral line; 2. a conduit; 21. an elastic conduit; 22. an inner sleeve; 23. an outer catheter; 24. stainless steel corrugated pipe; 25. an inner conduit; 3. a cable wire; 4. a handle; 5. a Y-shaped connector; 51. a first heat shrink sleeve; 52. a second heat shrink sleeve; 53. a third heat shrink tubing; 54. a first hose; 55. a second hose; 56. a first wiring terminal; 57. a second wiring terminal; 58. a bushing; 6. a plug; 61. a plug housing; 62. a plug inner housing; 63. inserting a pin; 64. an insulator; 65. a cable clamp; 66. the tail nut.
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 bipolar three-way radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head 1; the catheter module comprises a catheter 2; the cable module cable wires 3; the connecting module comprises a Y-shaped connector 5 and a plug 6; the electrode head 1 comprises a first electrode head 11 and a second electrode head 12, so that the ablation length per unit time is longer and the treatment speed is higher;
as shown in fig. 1, the first electrode tip 11 and the second electrode tip 12 are respectively connected with a cable through a connecting terminal and are insulated from each other, and are disposed at the far end of the catheter 2, the near end of the catheter 2 is connected with the Y-shaped connector 5, one end of the Y-shaped connector 5 is connected with the cable 3 and then connected with the plug 6, and the other end of the Y-shaped connector 5 is connected with the cable 3 and then connected with the handle 4.
As shown in fig. 9, both ends of the electrode head 1 are provided with square protrusions and triangular protrusions; the electrode head 1 comprises a plurality of specifications, specifically comprises a diameter of 2.7 multiplied by 5mm and a diameter of 2.7 multiplied by 8 mm; the electrode head 1 is made of SUS316L stainless steel, has a smooth surface, no rust spots, no scratches and no damage, and is subjected to electrolytic polishing and passivation treatment on the surface, and the head end is subjected to coating anti-adhesion treatment; the surface and the inside are cleaned by ultrasonic to ensure that no debris and no stain exists.
As shown in fig. 3, the first electrode tip 11 and the second electrode tip 12 are welded to two different-colored enameled copper alloy wires 13, respectively, and are insulated from each other.
The catheter 2 comprises an elastic catheter 21, an inner sleeve 22 and an outer catheter 23, wherein the inner sleeve 22 is inserted into an inner hole at the head end of the elastic catheter 21 at the front end of the outer catheter 23; a neutral wire 14 is arranged between the inner sleeve 22 and the outer guide pipe 23, the cable material is SUS316L/SUS304 stainless steel wire, and the two different-color enameled copper alloy wires 13.
The rear part of the outer conduit 23 is blue nylon, the middle layer in the inner part of the outer conduit is a stainless steel corrugated braided tube, namely a stainless steel corrugated tube 24, and the head part is a gray nylon elastomer; the length of the outer conduit 23 comprises 900mm and 1800 mm; the rear part and the head part of the outer conduit 23 are welded in a heat sealing way, so that the falling-off is prevented, the surface is smooth, and no scratch, damage or stain is generated.
As shown in fig. 6, the welding spot of the cable 3 is sleeved with a heat shrink tube; the circuit is conducted, and the conditions of open circuit, short circuit or poor insulation are avoided; and injection molding, wherein the molding is free of flash, material grains or shrinkage.
As shown in fig. 2, the Y-shaped connector 5 is a Y-shaped luer connector, is transparent PC/PVC, has a cavity therein, and has a smooth surface without burrs; the Y-shaped connector 5 comprises a first heat-shrinkable tube 51, a second heat-shrinkable tube 52, a third heat-shrinkable tube 53, a first hose 54, a second hose 55, a first wiring terminal 56, a second wiring terminal 57 and a bushing 58, wherein the first wiring terminal 56 and the second wiring terminal 57 are connected with an enameled copper alloy wire 13, the first hose 54 is connected with the second hose 55, one end of the second hose 55 is sleeved with the Y-shaped connector 5 and fixedly connected with glue, the bushing 58 tightly lines the first wiring terminal 56 and the second wiring terminal 57 outwards and is fixed with glue, the first heat-shrinkable tube 51 tightly sleeves the outer conduit 23 and is a 4mm heat-shrinkable tube, the second heat-shrinkable tube 52 and the third heat-shrinkable tube 53 tightly sleeves a wiring terminal, the second heat-shrinkable tube 52 is an 8mm heat-shrinkable tube, and the third heat-shrinkable tube 53 is an 11mm heat-shrinkable tube; the heat-shrinkable sleeve is made of black PE sleeve, and the inner surface and the outer surface of the heat-shrinkable sleeve are cleaned by ultrasonic; the liner 58 has a PI tube disposed therein.
The terminal is shown in fig. 7-8.
The first hose 54 and the second hose 55 are made of transparent PVC materials, and the surfaces of the hoses are free of stains and spots.
As shown in fig. 4-5, the plug 6 includes a plug housing 61, a plug inner housing 62, pins 63, an insulator 64, a cable clamp 65 and a tail nut 66; the plug inner shell 62 is arranged inside the plug shell 61, the front end of the insulator 64 is provided with the plug pin 63, the tail end of the plug inner shell 62 is provided with the tail nut 66, and the cable clamp 65 is arranged at the tail end of the insulator 64; one end of the plug shell 61 is provided with a connecting surface I, and the connecting surface I allows a draft angle of 0.3-0.6 degrees.
The bipolar three-way radio frequency ablation catheter key is shown in figure 10.
The installation method of the bipolar three-way radio frequency ablation catheter system comprises the following steps:
firmly welding the first electrode tip 11 and the enameled copper alloy wire 13; the second electrode head 12 is firmly welded with the other enameled copper alloy wire 13; inserting the inner sleeve 22 into the inner hole at the head end of the elastic catheter 21 at the front end of the outer catheter, and tightly fitting and bonding the inner sleeve with glue; after the two electrode tips are assembled, the two electrode tips are fixed by glue, and the three-tooth buckle bending inner buckle treatment and the end face closing treatment are carried out, so that the catheter and the electrode tips are kept smooth without scratches and strains; 1 stainless steel wire and 2 enameled copper wires penetrate through the Y-shaped tee joint, the outer guide pipe 23 and the inner guide pipe 25 are respectively inserted into a counter bore with the size of the Y-shaped tee joint, 3 cables are tightened, the stainless steel wire and the enameled copper wires are inserted into a first connecting terminal 56, and the other enameled copper wire is inserted into a second connecting terminal 57 and is firmly pressed and welded; a second heat shrink 52 heat shrink terminal; the bushing 58 tightly lines the wiring terminal outwards, the wiring terminal is fixed by glue, and the bushing 58 is connected with an inner hole of the Y-shaped tee; one end of the second hose 55 is sleeved with the Y-shaped tee joint and is fixedly connected with the Y-shaped tee joint through glue; the first hose 54 is fixedly connected with the second hose 55 and the cable by glue; the outer catheter 24 and the inner catheter 22 are respectively fixed on the Y-shaped tee by glue.
In this embodiment, the technical requirements for the plug 6 are as follows:
1. the number of the contact pieces is as follows: 4, a core;
2. diameter of the contact piece:
3. working temperature: -25 ℃ to +125 ℃;
4. medium pressure resistance: 1200V/AC;
5. rated current: 7A;
6. contact resistance: less than or equal to 7M omega (the plug and the socket are oppositely inserted);
7. insulation resistance: more than or equal to 3000 MOmega;
8. smoke test: 48H, and (c) a;
9. flame retardancy: UL 94V-0;
10. mechanical life: more than or equal to 3000 times (connection and separation);
11. waterproof grade: IP 50;
12. shell color: gray (G), black (H);
nut color: grey (G), blue (B), yellow (Y), black (H), red (R), white (W), green (L), which can be mixed.
Note that: when the electrode is tested according to appendix F of GB18457-2015, the soaked part of the electrode has no corrosion mark.
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 (10)
1. A bipolar three-way radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head (1); the catheter module comprises a catheter (2); the cable module cable wires (3); the connecting module comprises a Y-shaped connector (5) and a plug (6); the electrode head (1) comprises a first electrode head (11) and a second electrode head (12); first electrode tip (11) are connected respectively and mutual insulation through binding post and cable with second electrode tip (12), set up in pipe (2) distal end, pipe (2) near-end is connected Y type connector (5), Y type connector (5) one end is connected cable conductor (3), then connect plug (6), and the other end is connected cable conductor (3) connection handle (4) then.
2. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: both ends of the electrode tip (1) are provided with square bulges and triangular bulges; the electrode head (1) comprises a plurality of specifications, specifically comprises a diameter of 2.7 multiplied by 5mm and a diameter of 2.7 multiplied by 8 mm; the electrode head (1) is made of SUS316L stainless steel, the surface is smooth, rustless, scratch-free and damage-free, the surface is subjected to electrolytic polishing and passivation treatment, and the head end is subjected to anti-adhesion coating treatment; the surface and the inside are cleaned by ultrasonic cleaning, so that no debris or stain is ensured.
3. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the first electrode tip (11) and the second electrode tip (12) are respectively welded with two different-color enameled copper alloy wires (13) and are separated and insulated from each other.
4. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the catheter (2) comprises an elastic catheter (21), an inner sleeve (22) and an outer catheter (23), wherein the inner sleeve (22) is inserted into an inner hole at the head end of the elastic catheter (21) at the front end of the outer catheter (23); a neutral wire (14) is arranged between the inner sleeve (22) and the outer guide pipe (23), and the cable material of the neutral wire (14) is SUS316L/SUS304 stainless steel wire and two different-color enameled copper alloy wires (13).
5. The bipolar three-way radio frequency ablation catheter system of claim 4, wherein: the rear part of the outer conduit (23) is blue nylon, the middle layer in the inner part of the outer conduit is a stainless steel corrugated braided tube, namely a stainless steel corrugated tube (24), and the head part of the outer conduit is a gray nylon elastomer; the length of the outer conduit (23) comprises both 900mm and 1800 mm; the rear part and the head part of the outer conduit (23) are welded in a heat sealing way, and the surface is smooth and has no scratch damage or stain.
6. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the Y-shaped connector (5) is a Y-shaped luer connector, is transparent PC/PVC, is internally provided with a cavity channel, and has a smooth and burr-free surface; the Y-shaped connector (5) comprises a first heat-shrinkable tube (51), a second heat-shrinkable tube (52), a third heat-shrinkable tube (53), a first hose (54), a second hose (55), a first wiring terminal (56), a second wiring terminal (57) and a bushing (58), wherein the first wiring terminal (56) and the second wiring terminal (57) are connected with an enameled copper alloy wire (13), the first hose (54) is connected with the second hose (55), one end of the second hose (55) is sleeved with the Y-shaped connector (5) and fixedly connected with glue, the bushing (58) outwards lines the first wiring terminal (56) and the second wiring terminal (57) and is fixed with glue, the first heat-shrinkable tube (51) tightly sleeves an outer conduit (23) and is a 4mm heat-shrinkable tube, and the second heat-shrinkable tube (52) and the third heat-shrinkable tube (53) are tightly sleeved with a heat-shrinkable tube, the second heat-shrinkable sleeve (52) is an 8mm heat-shrinkable sleeve, and the third heat-shrinkable sleeve (53) is an 11mm heat-shrinkable sleeve; the heat-shrinkable sleeve is made of black PE sleeve, and the inner surface and the outer surface of the heat-shrinkable sleeve are cleaned by ultrasonic cleaning; and a PI pipe is arranged inside the bushing (58).
7. The bipolar three-way radio frequency ablation catheter system of claim 7, wherein: the first hose (54) and the second hose (55) are made of transparent PVC materials, and the surfaces of the hoses are smooth and free of stains and spots.
8. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the plug (6) comprises a plug shell (61), a plug inner shell (62), a contact pin (63), an insulator (64), a cable clamp (65) and a tail nut (66); the plug inner shell (62) is arranged inside the plug shell (61), the front end of the insulator (64) is provided with the contact pin (63), the tail end of the plug inner shell (62) is provided with the tail nut (66), and the cable clamp (65) is arranged at the tail end of the insulator (64); one end of the plug shell (61) is provided with a connecting surface (I), and the connecting surface allows a draft angle of 0.3-0.6 degrees.
9. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the installation method of the bipolar three-way radio frequency ablation catheter system comprises the following steps:
firmly welding the first electrode tip (11) and the enameled copper alloy wire (13); the second electrode head (12) is firmly welded with the other enameled copper alloy wire (13); inserting the inner sleeve (22) into an inner hole at the head end of the elastic catheter (21) at the front end of the outer catheter, and tightly matching and bonding the inner sleeve with glue; after the two electrode tips are assembled, the two electrode tips are fixed by glue, and the three-tooth buckle bending inner buckle treatment and the end face closing treatment are carried out, so that the catheter and the electrode tips are kept smooth without scratches and strains; 1 stainless steel wire and 2 enameled copper wires penetrate through the Y-shaped tee joint, the outer guide pipe (23) and the inner guide pipe (25) are respectively inserted into large and small counter bores of the Y-shaped tee joint, 3 cables are tightened, the stainless steel wire and the enameled copper wires are inserted into the first connecting terminal (56), the other enameled copper wire is inserted into the second connecting terminal (57), and the stainless steel wire and the enameled copper wires are pressed and welded firmly; a second heat shrink tubing (52) heat shrink terminal; the bushing (58) tightly lines the wiring terminal outwards, and the wiring terminal is fixed by glue, and the bushing (58) is connected with an inner hole of the Y-shaped tee joint; one end of the second hose (55) is sleeved with the Y-shaped tee joint and is fixedly connected with the Y-shaped tee joint through glue; the first hose (54) is fixedly connected with the second hose (55) and the cable by glue; the outer catheter (24) and the inner catheter (22) are respectively fixed on the Y-shaped tee by glue.
10. The bipolar three-way radio frequency ablation catheter system of claim 1, wherein: the bipolar three-way radio frequency ablation catheter system is suitable for ablation treatment of pathological tissues in a human body cavity, and radio frequency energy is transmitted to an electrode at the top end of the catheter to generate heat to cauterize and coagulate tumor tissues of a gastrointestinal tract or a digestive tract.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047881.7A CN114557765A (en) | 2022-01-17 | 2022-01-17 | Bipolar three-way radio frequency ablation catheter system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047881.7A CN114557765A (en) | 2022-01-17 | 2022-01-17 | Bipolar three-way radio frequency ablation catheter system |
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| CN114557765A true CN114557765A (en) | 2022-05-31 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202426651U (en) * | 2012-01-19 | 2012-09-12 | 洪浪 | Coronary vein mapping catheter |
| CN104983462A (en) * | 2015-07-02 | 2015-10-21 | 安隽医疗科技(南京)有限公司 | Radiofrequency ablation bipolar catheter and treatment device with same |
| CN217286046U (en) * | 2022-01-17 | 2022-08-26 | 安隽医疗科技(南京)有限公司 | Bipolar three-way radio frequency ablation catheter |
-
2022
- 2022-01-17 CN CN202210047881.7A patent/CN114557765A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202426651U (en) * | 2012-01-19 | 2012-09-12 | 洪浪 | Coronary vein mapping catheter |
| CN104983462A (en) * | 2015-07-02 | 2015-10-21 | 安隽医疗科技(南京)有限公司 | Radiofrequency ablation bipolar catheter and treatment device with same |
| CN217286046U (en) * | 2022-01-17 | 2022-08-26 | 安隽医疗科技(南京)有限公司 | Bipolar three-way radio frequency ablation catheter |
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