CN114533255A - Bipolar through radio frequency ablation catheter system - Google Patents
Bipolar through radio frequency ablation catheter system Download PDFInfo
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- CN114533255A CN114533255A CN202210047875.1A CN202210047875A CN114533255A CN 114533255 A CN114533255 A CN 114533255A CN 202210047875 A CN202210047875 A CN 202210047875A CN 114533255 A CN114533255 A CN 114533255A
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- 238000011298 ablation treatment Methods 0.000 claims abstract description 7
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- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
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- 238000002845 discoloration Methods 0.000 claims description 3
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- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
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- 238000002679 ablation Methods 0.000 abstract description 8
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
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- 208000006288 Vascular Tissue Neoplasms Diseases 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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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
- 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
- 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
-
- 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
Abstract
The invention provides a bipolar straight-through radio frequency ablation catheter system which is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head; the electrode heads comprise a first electrode head and a second electrode head; the catheter module comprises a catheter, and an inner core wire of the catheter is arranged in the catheter; the cable module includes a cable; the connecting module comprises a straight-through joint and a plug; the electrode tips are arranged at the far end of the catheter, the two electrode tips are independently welded with the cable and insulated by a heat-shrinkable sleeve, and the near end of the catheter is connected with the cable through the through connection assembly so as to be connected with the plug. The electrode head ends of the electrode are of two types, so that the ablation length in unit time is longer, the treatment speed is higher, an electrode plate is not required to be additionally added, the operation is more convenient, and the safety is higher; the PTFE lining between the two electrode heads is high temperature resistant, can measure temperature and is insulated; the invention can be used for the ablation treatment of pathological tissues in the body cavity tract such as varicosity, respiratory tract tumor and the like.
Description
Technical Field
The invention relates to the field of radio frequency ablation, in particular to a bipolar straight-through 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 and technology, the ablation treatment of respiratory tumors and varicose veins has obvious advantages, but at present, the ablation treatment means is single and limited, and the existing radiofrequency 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 bipolar through-radio frequency ablation catheter system to solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bipolar straight-through radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head 1; the electrode head 1 comprises a first electrode head 11 and a second electrode head 12, so that the ablation length in unit time is longer, the treatment speed is higher, an electrode plate is not required to be additionally added in the operation process, the operation is more convenient, and the safety is higher; the catheter module comprises a catheter 2, wherein an inner catheter core wire 5 is arranged in the catheter 2; the cable module cable 7; the connecting module comprises a through connector 6 and a plug 8; a PTFE bush is arranged between the first electrode tip 11 and the second electrode tip 12, the two are insulated from each other, the electrode tips are arranged at the distal end of the catheter 2, the two electrode tips are separately welded to a cable and insulated by a heat-shrinkable sleeve, and the proximal end of the catheter 2 is connected to the cable 7 through the through joint 6 and then connected to the plug 8.
The inside of the first electrode tip 11 is welded with a first stainless steel wire 15, the outer near end is connected with one end of a bushing 3, the other end of the bushing 3 is connected with the second electrode tip 12, a second stainless steel wire 16 is welded inside the second electrode tip 12, and a neutral line 17 is arranged inside the second electrode tip 12.
The length of the bush 3 comprises 2mm or 10 mm; one end of the lining 3 is provided with a concave opening, and the other end is provided with a convex opening; a PI pipe 14 is arranged in the bushing 3, the neutral line 17 and the second stainless steel wire 16 penetrate through the PI pipe 14, and the neutral line 17 has a temperature measuring function; the whole bushing 3 is yellow opaque PTFE, is high temperature resistant and insulating, has a smooth surface and no scratch damage, and is cleaned by ultrasonic cleaning on the surface and inside to ensure no debris and no stain.
The catheter 2 comprises an outer catheter 21 which is a PEEK outer sleeve, so that the lubricity is higher, the rigidity is better, and the catheter 2 and the outer catheter 21 comprise various lengths, particularly 900mm or 1800 mm; black ring-printed scales are arranged on the outer surface of the outer catheter 21, and an inner catheter core wire 5 made of stainless steel wires and copper wires is arranged inside the catheter 2; the outer conduit 21 is sleeved on the tail end of the second electrode head 12.
The straight-through joint 6 comprises a luer joint 61, a first connecting terminal 62, a second connecting terminal 63, an internal heat-shrinkable sleeve 64, a first hose 65 and a second hose 66; the luer connector 61 is connected with the outer catheter 21, an inner cable is connected with the first wiring terminal 62 and the second wiring terminal 63, the inner heat-shrinkable sleeve 64 is arranged outside the first wiring terminal 62 and the second wiring terminal 63, the first hose 65 and the second hose 66 are arranged around the second wiring terminal 63, and the outer heat-shrinkable sleeve 67 is integrally sleeved outside the straight-through connector 6; the through connector 6 is internally penetrated by a cable.
The electrode head 1 is made of SUS316L stainless steel, has a smooth surface, no rust spots, no scratches and no damage, is subjected to electrolytic polishing and passivation treatment on the surface, and is subjected to anti-adhesion coating treatment on the head end, so that the adhesion problem in the operation process can be prevented; the surface and the inside are cleaned by ultrasonic cleaning, so that no debris or stain is ensured.
The installation method of the bipolar straight-through radio frequency ablation catheter system comprises the following steps:
the first stainless steel wire 15 is inserted into the inner hole of the first electrode tip 11 and is firmly welded, and the second stainless steel wire 16 is firmly welded with the end face of the second electrode tip 12; after the stainless steel wire is welded, the surface of the electrode tip 1 has no welding spots, scorching, oxidation, discoloration, scratches or damages; the first electrode tip 11 and the second electrode tip 12 are sleeved by a bushing 13 and are firmly adhered by glue to prevent falling off; the through connector 6 is used to connect the cable 7, which in turn connects the plug 8.
The bipolar straight-through radio frequency ablation catheter system can be applied to ablation treatment of lesion tissues in human body cavities such as varicosity and respiratory tumors.
Compared with the prior art, the invention has the beneficial effects that:
the electrode head ends of the invention have two models, the ablation length in unit time is longer, the treatment speed is faster, and the bipolar arrangement ensures that no electrode plate is additionally added in the operation process, the operation is more convenient, and the safety is higher; the anti-adhesion coating is arranged, so that the adhesion problem in the operation process can be prevented; the PEEK outer sleeve enables the catheter to have better lubricity and is more convenient to enter a cavity channel; the PTFE lining between the two electrode heads is high temperature resistant, can measure temperature and is insulated; the catheter is provided with two types, so that the catheter is convenient to be suitable for different parts of a human body; and the outside of the conduit is provided with scales for convenient marking. The invention can be used for varicose vein treatment, respiratory tract tumor treatment and bronchial asthma treatment.
Drawings
FIG. 1 is a schematic view of the overall structure of a bipolar straight-through RF ablation catheter of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a bipolar straight-through RF ablation catheter of the present invention;
FIG. 3 is a schematic view of the electrode tip connection of the bipolar straight-through RF ablation catheter of the present invention;
FIG. 4 is a schematic view of a feedthrough design of a bipolar feedthrough RF ablation catheter of the present invention;
fig. 5 is a schematic view of a welding structure of a first electrode head of the bipolar straight-through radio frequency ablation catheter of the present invention;
FIG. 6 is a schematic view of a plug connection configuration of the bipolar straight-through RF ablation catheter of the present invention;
FIG. 7 is a schematic diagram of a black ring structure of the bipolar through RF ablation catheter of the present invention;
fig. 8 is an overall structure schematic diagram of the first electrode head of the invention;
FIG. 9 is a schematic view of the cut structure of the first electrode head of the present invention;
fig. 10 is a schematic view of the overall structure of the second electrode head of the invention;
fig. 11 is a schematic structural view of a section of the second electrode head of the present invention;
FIG. 12 is a schematic view of a cross-sectional view of a bushing according to the present invention;
fig. 13 is a schematic diagram of the overall framework of the bipolar straight-through radio frequency ablation catheter system of the present invention;
in the figure: m, black ring printing; n, welding areas; 1. an electrode tip; 11. a first electrode tip; 12. a second electrode tip; 14. a PI pipe; 15. a first stainless steel wire; 16. a second stainless steel wire; 17. a neutral line; 2. a conduit; 21. an outer catheter; 3. a bushing; 5. a catheter inner core wire; 6. a straight-through joint; 61. a luer fitting; 62. a first wiring terminal; 63. a second wiring terminal; 64. an internal heat shrink sleeve; 65. a first hose; 66. a second hose; 67. an outer heat shrink sleeve; 7. a cable; 8. and (4) a plug.
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. 1, 2 and 3, a bipolar straight-through radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connection module and an electrode head 1, as shown in fig. 13; the electrode head 1 comprises a first electrode head 11 and a second electrode head 12, so that the ablation length in unit time is longer, the treatment speed is higher, an electrode plate is not required to be additionally arranged in the operation process, the operation is more convenient, and the safety is higher; the catheter module comprises a catheter 2, wherein an inner catheter core wire 5 is arranged in the catheter 2; the cable module cable 7; the connecting module comprises a through connector 6 and a plug 8; a PTFE bush is arranged between the first electrode tip 11 and the second electrode tip 12, the two are insulated from each other, the electrode tips are arranged at the distal end of the catheter 2, the two electrode tips are separately welded to a cable and insulated by a heat-shrinkable sleeve, and the proximal end of the catheter 2 is connected to the cable 7 through the through joint 6 and then connected to the plug 8, as shown in fig. 6.
As shown in fig. 5, the first electrode tip 11 is internally welded with a first stainless steel wire 15, the outer proximal end is connected with one end of a bush 3, the other end of the bush 3 is connected with the second electrode tip 12, the second electrode tip 12 is internally welded with a second stainless steel wire 16, and a neutral line 17 is arranged inside the second electrode tip 12.
As shown in fig. 12, the length of the liner 3 comprises 2mm or 10 mm; one end of the lining 3 is provided with a concave opening, and the other end is provided with a convex opening; a PI pipe 14 is arranged in the bushing 3, the neutral line 17 and the second stainless steel wire 16 penetrate through the PI pipe 14, and the neutral line 17 has a temperature measuring function; the whole bushing 3 is yellow opaque PTFE, is high temperature resistant and insulating, has a smooth surface and no scratch damage, and is cleaned by ultrasonic cleaning on the surface and inside to ensure no debris and no stain.
The catheter 2 comprises an outer catheter 21 which is a PEEK outer sleeve, so that the lubricity is higher, the rigidity is better, and the catheter 2 and the outer catheter 21 comprise various lengths, particularly 900mm or 1800 mm; the outer surface of the outer catheter 21 is provided with black ring-printed scales, as shown in fig. 7, an inner catheter core wire 5 is arranged inside the catheter 2 and is made of a stainless steel wire combined with a copper wire; the outer conduit 21 is sleeved at the tail end of the second electrode head 12.
As shown in fig. 4, the through connector 6 includes a luer connector 61, a first terminal 62, a second terminal 63, an inner heat shrinkable tube 64, a first hose 65, and a second hose 66; the luer connector 61 is connected with the outer catheter 21, an inner cable is connected with the first wiring terminal 62 and the second wiring terminal 63, the inner heat-shrinkable sleeve 64 is arranged outside the first wiring terminal 62 and the second wiring terminal 63, the first hose 65 and the second hose 66 are arranged around the second wiring terminal 63, and the outer heat-shrinkable sleeve 67 is integrally sleeved outside the straight-through connector 6; the through connector 6 is internally penetrated by a cable.
As shown in fig. 8-11, the material of the electrode head 1 is SUS316L stainless steel, the surface is smooth, has no rust spots, scratches and damages, the surface is subjected to electrolytic polishing and passivation treatment, and the head end is subjected to anti-adhesion coating treatment, so that the adhesion problem in the operation process can be prevented; the surface and the inside are cleaned by ultrasonic to ensure that no debris and no stain exists.
The installation method of the bipolar straight-through radio frequency ablation catheter system comprises the following steps:
the first stainless steel wire 15 is inserted into the inner hole of the first electrode tip 11 and is firmly welded, and the second stainless steel wire 16 is firmly welded with the end face of the second electrode tip 12; after the stainless steel wire is welded, the surface of the electrode tip 1 has no welding spots, scorching, oxidation, discoloration, scratches or damages; the first electrode tip 11 and the second electrode tip 12 are sleeved by a bushing 13 and are firmly adhered by glue to prevent falling off; the through connector 6 is used to connect the cable 7, which in turn connects the plug 8.
The bipolar straight-through radio frequency ablation catheter system can be applied to ablation treatment of lesion tissues in human body cavities such as varicosity and respiratory tumors.
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 (8)
1. A bipolar through radio frequency ablation catheter system is characterized by comprising a catheter module, a cable module, a connecting module and an electrode head (1); the electrode head (1) comprises a first electrode head (11) and a second electrode head (12); the catheter module comprises a catheter (2), wherein an inner catheter core wire (5) is arranged in the catheter (2); the cable module comprises a cable (7); the connection module comprises a through connector (6) and a plug (8); a PTFE (Polytetrafluoroethylene) bush is arranged between the first electrode tip (11) and the second electrode tip (12), the first electrode tip and the second electrode tip are insulated from each other, the electrode tips are arranged at the far end of the catheter (2), the two electrode tips are separately welded with a cable and are insulated by a heat-shrinkable sleeve, and the near end of the catheter (2) is connected with the cable (7) through the through joint (6) and then connected with the plug (8).
2. The bipolar through radio frequency ablation catheter system of claim 1, wherein: the inside and first stainless steel wire (15) welding of first electrode tip (11), the outside near-end is connected with the one end of bush (3), the other end of bush (3) is connected second electrode tip (12), inside welding second stainless steel wire (16) of second electrode tip (12), the inside neutral conductor (17) that is equipped with in position of second electrode tip (12).
3. The bipolar through radio frequency ablation catheter system of claim 2, wherein: the length of the bushing (3) comprises 2mm or 10 mm; one end of the bushing (3) is provided with a concave opening, and the other end of the bushing is provided with a convex opening; a PI pipe (14) is arranged inside the bushing (3), and the neutral wire (17) and the second stainless steel wire (16) penetrate into the PI pipe (14); the whole bushing (3) is yellow opaque PTFE, the surface is smooth, no scratch is damaged, and the surface and the inside are cleaned by ultrasonic cleaning to ensure no debris and no stain.
4. The bipolar through radio frequency ablation catheter system of claim 1, wherein: the catheter (2) comprises an outer catheter (21) which is a PEEK outer sleeve, and the catheter (2) and the outer catheter (21) comprise various lengths, particularly 900mm or 1800 mm; black ring-printed scales are arranged on the outer surface of the outer catheter (21), and the catheter inner core wire (5) is arranged inside the catheter (2) and is made of stainless steel wires and copper wires; the outer conduit (21) is sleeved at the tail end of the second electrode head (12).
5. The bipolar through radio frequency ablation catheter system of claim 1, wherein: the straight-through joint (6) comprises a luer joint (61), a first wiring terminal (62), a second wiring terminal (63), an inner heat-shrinkable sleeve (64), a first hose (65) and a second hose (66); the luer connector (61) is connected with an outer conduit (21), an inner cable is connected with the first wiring terminal (62) and the second wiring terminal (63), the inner heat-shrinkable sleeve (64) is arranged outside the first wiring terminal (62) and the second wiring terminal (63), the first hose (65) and the second hose (66) are arranged around the second wiring terminal (63), and the outer heat-shrinkable sleeve (67) is integrally sleeved outside the straight-through connector (6); the interior of the straight-through joint (6) is communicated with a cable.
6. The bipolar through radio frequency ablation catheter system of claim 1, wherein: 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.
7. The bipolar through radio frequency ablation catheter system of claim 1, wherein: the installation method of the bipolar straight-through radio frequency ablation catheter system comprises the following steps:
inserting a first stainless steel wire (15) into an inner hole of the first electrode tip (11) and firmly welding, and firmly welding a second stainless steel wire (16) with the end face of the second electrode tip (12); after the stainless steel wire is welded, the surface of the electrode tip (1) has no welding spots, scorching, oxidation, discoloration, scratches or damages; the first electrode tip (11) and the second electrode tip (12) are sleeved by a bushing (13) and are firmly adhered by glue to prevent falling off; -connecting the cable (7) and, in turn, the plug (8) using the pass-through connector (6).
8. The bipolar through radio frequency ablation catheter system of claim 1, wherein: the bipolar straight-through radio frequency 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047875.1A CN114533255B (en) | 2022-01-17 | 2022-01-17 | Bipolar straight-through radio frequency ablation catheter system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210047875.1A CN114533255B (en) | 2022-01-17 | 2022-01-17 | Bipolar straight-through radio frequency ablation catheter system |
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| CN114533255A true CN114533255A (en) | 2022-05-27 |
| CN114533255B CN114533255B (en) | 2023-11-17 |
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| CN114533255B (en) | 2023-11-17 |
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