CN112137714A - Radio frequency ablation catheter convenient for puncture, guide, fixable guide wire and liquid injection - Google Patents
Radio frequency ablation catheter convenient for puncture, guide, fixable guide wire and liquid injection Download PDFInfo
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- CN112137714A CN112137714A CN202011133423.2A CN202011133423A CN112137714A CN 112137714 A CN112137714 A CN 112137714A CN 202011133423 A CN202011133423 A CN 202011133423A CN 112137714 A CN112137714 A CN 112137714A
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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
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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
- 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
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
Abstract
The invention discloses a radio frequency ablation catheter convenient for puncture, introduction and fixation of a guide wire and liquid injection, and relates to the technical field of medical instruments, and the radio frequency ablation catheter comprises a radio frequency ablation catheter main body and a liquid injection part, wherein the radio frequency ablation catheter main body comprises a multi-cavity flexible pipe and a handle, a liquid injection cavity, a support cavity and a conductive wire cavity are arranged in the multi-cavity flexible pipe, the liquid injection cavity is used for liquid injection and placement of the guide wire, an elastic support wire is arranged in the support cavity, a guide wire is arranged in the conductive wire cavity, an insulating block is arranged at the front end of the multi-cavity flexible pipe, and a conductive working ring is sleeved; annotate the liquid part and include the main entrance and set up in the injection passageway of main entrance one side, injection passageway and main entrance intercommunication, the main entrance is connected with the rear end of multicavity flexible tube, the main entrance with annotate the liquid chamber intercommunication, be provided with the retaining member on the main entrance. The device is convenient for puncture and leading into to focus department fast accurately, has improved the security of treatment, is convenient for in time assess the effect of melting after the radio frequency melts.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a radiofrequency ablation catheter which is convenient for puncture, introduction, fixation of a guide wire and liquid injection.
Background
Common clinical causes of the biliary tract malignant obstruction include malignant tumors which are originally generated in the biliary tract system, and metastatic tumors such as liver cancer, pancreatic cancer, gastric cancer, colon cancer and the like which invade bile ducts. Surgical resection is the only radical treatment method for biliary tract tumor, but only 20-30% of patients have the chance of surgical resection, most of patients have middle and late stage diagnosis and poor basic condition, even show cachexia, the surgical resection rate is low, about 10.4%, and only palliative treatment can be performed after the optimal surgical chance is lost. In recent years, radio frequency ablation therapy is widely applied to solid tumors such as liver, tumor tissues can be coagulated and necrotized by virtue of local high temperature, and the radio frequency ablation therapy has important significance for controlling tumor development and prolonging the life of patients. By means of the catheter radiofrequency ablation through the natural cavity or intervention of the human body through the percutaneous liver puncture under the endoscope, the tumor tissue is palliatively destroyed through radiofrequency ablation, the disease course is delayed, and therefore the survival period of a patient is prolonged, and the method has important significance. The catheter radio frequency ablation technology is a new minimally invasive treatment method, has definite feasibility for the clinical treatment of patients with biliary tract malignant obstruction and ablation treatment, and can directly and effectively perform ablation treatment on tumor focuses.
There are two ways of catheter radio frequency ablation: one is Endoscopic Retrograde Cholangiopancreatography (ERCP), and the other is percutaneous hepatopuncture cholangiography (PTC). Under the assistance of an endoscope or an X-ray machine, after the guide wire intubation is guided into the bile duct, the tumor part, the pathological change degree and the length are clearly imaged, the guide wire is reserved, and under the guide of the guide wire, the radio frequency ablation catheter can conduct the working end to the part where the tumor is located to carry out radio frequency ablation. In both modes, a guide wire needs to be penetrated firstly, then the guide wire is imaged through an X-ray machine, so that the guide wire is accurately positioned at the focus position of the cavity, the guide wire is positioned at the focus position, then the conductive working end of the ablation catheter penetrates into the focus position under the guidance of the guide wire, and then the radiofrequency ablation is carried out.
According to two modes of the catheter radiofrequency ablation, the schematic diagram of the penetration path of the radiofrequency ablation catheter into the biliary tract lesion is shown in fig. 6. The penetration path of the ERCP mode radio frequency ablation catheter is as follows: the radiofrequency ablation catheter enters the stomach c through the oral cavity d of the human body, then enters the duodenum b, and finally reversely enters the biliary tract lesion tissue a. The PTC mode radio frequency ablation catheter penetration path is as follows: the skin surface layer directly penetrates into the path e, and finally reversely enters the biliary tract lesion tissue a. The route of the radiofrequency ablation catheter which enters the focus of the biliary tract cavity is complicated and difficult to penetrate into the focus through the natural cavity (ERCP) or percutaneous Puncture (PTC) of the human body. Therefore, there is a need to address the ease of penetration of radiofrequency ablation catheters. Meanwhile, according to clinical requirements, the safety of the radio frequency ablation and the timely evaluation of the effect of the radio frequency ablation by injecting a contrast medium after the radio frequency ablation are also required to be met.
Disclosure of Invention
In order to solve the technical problems, the invention provides the radiofrequency ablation catheter which is convenient to puncture and guide, can fix the guide wire and inject liquid, is convenient to puncture and guide to a focus quickly and accurately, improves the treatment safety, and is convenient to evaluate the ablation effect after radiofrequency ablation in time.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a radio frequency ablation catheter convenient for puncture, introduction, fixation of a guide wire and liquid injection, which comprises a radio frequency ablation catheter main body and a liquid injection part, wherein the radio frequency ablation catheter main body comprises a multi-cavity flexible pipe and a handle, a liquid injection cavity, a support cavity and a conductive wire cavity are arranged in the multi-cavity flexible pipe, the liquid injection cavity penetrates through the front end and the rear end of the multi-cavity flexible pipe and is used for injecting liquid and placing the guide wire, an elastic support wire is arranged in the support cavity, a guide wire is arranged in the conductive wire cavity, the rear end of the multi-cavity flexible pipe is fixed in the handle, the front end of the multi-cavity flexible pipe is provided with an insulating block, the liquid injection cavity penetrates through the insulating block and is communicated with the outside, a conductive working ring is sleeved outside the front end of the multi-cavity flexible pipe, the conductive working ring is arranged at, the rear end of the lead is connected with the radio frequency connector; the liquid injection part comprises a main channel and an injection channel arranged on one side of the main channel, the injection channel is communicated with the main channel, the main channel is connected with the rear end of the multi-cavity flexible pipe, the main channel is communicated with the liquid injection cavity, the main channel is used for placing the guide wire, a locking piece is arranged on the main channel, and the injection channel is used for connecting liquid injection equipment.
Preferably, the handle rear end is provided with first joint, first joint with the multicavity flexible tube rear end is connected, the main entrance is the hose, annotate liquid part still includes three-way valve and retaining member, the three-way valve includes the third joint and the fourth joint of vertical second joint and the level setting that set up, the third joint be used for with first articulate, the fourth joint with the hose connection, be provided with on the hose the retaining member, the second joint be used for with annotate liquid equipment and be connected.
Preferably, the first connector is a first luer female connector, the second connector is a second luer female connector, the third connector is a capless luer male connector, the fourth connector is a luer male connector, and the locking member is a robert clamp.
Preferably, the radiofrequency ablation catheter main body further comprises a radiofrequency wire, and two ends of the radiofrequency wire are respectively connected with the guide wire and the radiofrequency joint.
Preferably, the multi-lumen flexible tube is fixed in the handle by a fixing member.
Preferably, the front end of the multi-cavity flexible pipe is provided with an annular groove, the conductive working ring is installed in the annular groove, and the inner side of the conductive working ring is connected with the front end of the lead in a welding mode.
Preferably, the conductive working ring is a metal ring.
Preferably, the elastic supporting wires are supporting steel wires, the insulating block is bullet-shaped, and the multi-cavity flexible tube is made of hydrophilic materials.
Compared with the prior art, the invention has the following technical effects:
the invention provides a radio frequency ablation catheter convenient for puncture, introduction and fixation of a guide wire and liquid injection, which comprises a radio frequency ablation catheter main body and a liquid injection part, wherein the radio frequency ablation catheter main body comprises a multi-cavity flexible pipe and a handle, the multi-cavity flexible pipe is internally provided with a liquid injection cavity, a support cavity and a conductive wire cavity which penetrate through the front end and the rear end, and an elastic support wire is penetrated into the support cavity to ensure the elasticity of the multi-cavity flexible pipe, so that the axial stability of the multi-cavity flexible pipe in the guide wire is facilitated, the axial stress is ensured, the penetrability of the multi-cavity flexible pipe in a natural cavity channel in a complex and tortuous human body is facilitated, the rapid and accurate puncture and introduction to a focus are facilitated. The utility model discloses a medical treatment device, including the multicavity flexible tube, the multicavity flexible tube front end is provided with the collets, but the outside cover of multicavity flexible tube front end is equipped with electrically conductive working ring, can lead electrical working ring to set up in the collets rear portion for radio frequency energy can only be along leading electrical working ring to release all around, only to lead the focus all around of electrical working ring contact's biliary tract pipe wall play the ablation effect, can not harm all the other normal bile duct tissues, improved the security of treatment. The liquid injection part comprises a main channel and an injection channel arranged on one side of the main channel, the injection channel is communicated with the main channel, the main channel is connected with the rear end of the multi-cavity flexible tube, the main channel is communicated with the liquid injection cavity, the main channel is used for placing a guide wire, and the guide wire is not taken out, namely, the contrast medium can be injected, so that the operation safety is improved, the operation is simpler and more convenient, and the operation time is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a main body of a radiofrequency ablation catheter in the radiofrequency ablation catheter provided by the invention, which is convenient for puncture, introduction, fixation of a guide wire and injection;
FIG. 2 is a schematic structural diagram of an infusion component of the RF ablation catheter for facilitating puncture, introduction, fixation of a guide wire and infusion;
FIG. 3 is a schematic structural view of the handle end of the main body of the RF ablation catheter of the present invention;
FIG. 4 is a schematic structural view of the working end of the main body of the RF ablation catheter of the present invention;
FIG. 5 is a schematic view of the present invention in use with a RF ablation catheter that facilitates insertion, introduction, securement of a guide wire and infusion of fluids;
fig. 6 is a schematic diagram of a penetration path of the rf ablation catheter into a biliary tract lesion.
Description of reference numerals: 1. a first luer female connector; 2. a handle; 3. a multi-lumen flexible tube; 4. a fixing member; 5. a wire; 6. a first solder joint; 7. a radio frequency line; 8. a radio frequency connector; 9. a liquid injection cavity; 10. a conductive working ring; 11. an insulating block; 12. an elastic support wire; 13. a second solder joint; 14. a capless luer male connector; 15. a second luer female connector; 16. a three-way valve; 17. a luer male connector; 18. a Robert clamp; 19. a hose; 20. a guide wire; 21. an injector; a. biliary tract lesion tissue; b. the duodenum; c. the stomach; d. an oral cavity; e. the path of direct penetration from the surface layer of the skin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a radiofrequency ablation catheter which is convenient to puncture and guide, can fix a guide wire and inject liquid, is convenient to puncture and guide to a focus quickly and accurately, improves the treatment safety, and is convenient to evaluate the ablation effect after radiofrequency ablation in time.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-5, the present embodiment provides a radiofrequency ablation catheter for facilitating puncture, introduction, fixation of a guide wire and injection of fluid, which includes a radiofrequency ablation catheter main body and an injection component, the radiofrequency ablation catheter main body includes a multi-lumen flexible tube 3 and a handle 2, the multi-lumen flexible tube 3 can enter a target biliary tract or esophageal tract lesion site in a patient body through a natural orifice of the human body or through the skin under the precise guidance of the guide wire 20. The handle 2 is arranged to facilitate the operation of the multi-lumen flexible tube 3, and has an interface for connection to an external radio frequency energy device and an interface for connection to an infusion part. The liquid injection part can be combined with the multi-cavity flexible tube 3 to be used for injecting liquid contrast medium after lesion targets in a patient body are ablated so as to evaluate the ablation effect after radio frequency ablation in time.
As shown in fig. 4, at least three independent cavities are arranged inside the multi-cavity flexible tube 3, specifically, an infusion cavity 9, a support cavity and an electrically conductive wire cavity are arranged in the multi-cavity flexible tube 3, the infusion cavity 9 is used for infusion and placement of a guide wire 20, before radio frequency ablation, the multi-cavity flexible tube 3 penetrates through the infusion cavity 9 into the guide wire 20 which is guided to a target lesion in advance, and the electrically conductive working end of the multi-cavity flexible tube 3 is accurately guided to the target lesion position. After radio frequency ablation, the liquid injection cavity 9 is connected with the liquid injection component, and contrast agent can be injected into an ablated focal area through the liquid injection cavity 9, so that contrast and ablation effect evaluation after timely ablation are realized; the infusion chamber 9 can also inject drugs for combination therapy during the radiofrequency ablation process. The structural design that the elastic supporting wires 12 are arranged in the supporting cavity and the multi-cavity flexible tube 3 is combined with the elastic supporting wires 12 inside the multi-cavity flexible tube ensures the flexibility and elasticity of the radio frequency ablation catheter and the characteristic of easy movement in a natural cavity of a human body, is favorable for the axial stability of the multi-cavity flexible tube 3 in the guide wire 20 and ensures the axial stress so as to be favorable for the puncture performance of the multi-cavity flexible tube 3 in the narrow and tortuous natural cavity of the human body.
The conducting wire cavity is internally provided with a conducting wire 5, the rear end of the multi-cavity flexible pipe 3 is fixed in the handle 2, the front end of the multi-cavity flexible pipe 3 is provided with an insulating block 11, the liquid injection cavity 9 penetrates through the insulating block 11 to be communicated with the outside, the outside of the front end of the multi-cavity flexible pipe 3 is sleeved with a conducting working ring 10, the conducting working ring 10 is arranged at the rear part of the insulating block 11, the conducting working ring 10 is connected with the front end of the conducting wire 5, the rear end of the conducting wire 5 is connected with a radio frequency connector 8, and the conducting wire 5 is used for conveying the radio frequency energy of an external radio frequency host or a radio frequency energy generation controller. The conductive working ring 10 is used for transmitting radio frequency energy to carry out radio frequency ablation on lesion tissues, and the structures that the insulation block 11 is arranged at the foremost end and the conductive working ring 10 is arranged at the rear part of the insulation block 11 are adopted, so that the radio frequency energy cannot be released towards the front end along the conductive working ring 10, the radio frequency energy can be released around only along the conductive working ring 10, the rest normal bile duct tissues cannot be damaged, and the treatment safety is improved.
Annotate the liquid part and include the main entrance and set up in the injection passageway of main entrance one side, injection passageway and main entrance intercommunication, the main entrance is connected with the rear end of multicavity flexible tube 3, the main entrance with annotate liquid chamber 9 intercommunication, the main entrance is used for placing and draws the wire 20, is provided with the retaining member on the main entrance, when retaining member locking main entrance, plays sealed and fixed effect that draws the wire 20, the injection passageway is used for connecting notes liquid equipment. When the device works, the injection of the contrast agent is completed under the condition that the guide wire 20 is not taken out, so that the operation safety is improved, the operation is simpler and more convenient, and the operation time is saved.
As shown in fig. 1 and 2, the rear end of the handle 2 is provided with a first joint which is connected with the rear end of the multi-cavity flexible tube 3, the main channel is a flexible tube 19, the liquid injection part further comprises a three-way valve 16 and a locking member, the three-way valve 16 comprises a second joint which is vertically arranged and a third joint and a fourth joint which are horizontally arranged, the third joint is used for being connected with the first joint, the fourth joint is connected with the flexible tube 19, and the flexible tube 19 is provided with the locking member. The second connector in this embodiment serves as an injection channel, and the second connector is used for connecting with a liquid injection device. It should be noted that, an injection tube may also be provided to connect with the second connector, and the injection tube is used as an injection channel and connected with the injection device through the injection tube. Specifically, the liquid injection device in the present embodiment is a syringe 21.
In this embodiment, the first connector is a first luer female connector 1, the second connector is a second luer female connector 15, the third connector is a capless luer male connector 14, the fourth connector is a luer male connector 17, and the locking member is a robert clamp 18. The multi-lumen flexible tube 3 and the infusion part are connected by the first luer female connector 1 and the capless luer male connector 14 which are easy to insert and pull, so that the operation is convenient for users.
After the radio frequency ablation is completed, contrast medium needs to be injected, and the radio frequency ablation treatment effect is evaluated in time. The end of the guide wire 20 at the position where the handle 2 of the radiofrequency ablation catheter body penetrates out of the first luer female connector 1 at the tail end of the radiofrequency ablation catheter body, the guide wire 20 is used for positioning a focus position and cannot be moved, and the syringe 21 cannot be directly connected to the first luer female connector 1 for injecting a contrast medium. In this case, the injection member is required to perform the function of injecting the contrast medium. The contrast medium can be injected by inserting the guide wire 20 through one end of the first luer female connector 1, then the cap-less luer male connector 14, and then the one end of the flexible tube 19, inserting the cap-less luer male connector 14 into the first luer female connector 1 of the handle 2, screwing it, and pressing the locking switch of the robert's clamp 18 on the flexible tube 19, and then inserting the syringe 21 into the second luer female connector 15. The injection member in this embodiment solves the problem of injecting the liquid contrast medium without removing the guide wire 20.
As shown in fig. 3, the radiofrequency ablation catheter body further comprises a radiofrequency wire 7, and two ends of the radiofrequency wire 7 are respectively connected with the lead 5 and the radiofrequency joint 8. The rear end of the lead 5 is connected with a radio frequency wire 7 in a welding way to form a first welding point 6. In this embodiment also a fixation 4 is included, by means of which fixation 4 the flexible multilumen tubing 3 is fixed in the handle 2.
Specifically, the front end of the multi-cavity flexible pipe 3 is provided with an annular groove, the conductive working ring 10 is installed in the annular groove, and the inner side of the conductive working ring 10 is connected with the front end of the lead wire 5 in a welding mode to form a second welding point 13.
In this embodiment, the conductive working ring 10 is a metal ring, and the conductive wire 5 is a copper wire. The elastic support wire 12 is a support steel wire.
In this embodiment, the multi-lumen flexible tube 3 is made of hydrophilic material, and the insulating block 11 is bullet-shaped, so that the resistance of the multi-lumen flexible tube 3 in the narrow and tortuous lumen can be reduced, and the multi-lumen flexible tube 3 can be introduced into the focus. Meanwhile, the radiofrequency ablation catheter is provided with an elastic supporting wire 12, so that force is applied in the axial direction for facilitating penetration. The two are combined, the conductive working ring 10 of the multi-cavity flexible tube 3 can be quickly penetrated into the biliary tract focus, and the operation time is further saved.
The operation process of the radio frequency ablation catheter which is convenient for puncture, introduction, fixation of a guide wire and injection is adopted for carrying out the radio frequency ablation of the biliary tract tumor is as follows:
in the operation process, firstly, the guide wire 20 passes through the endoscope, and the guide wire 20 is penetrated to the focus of the biliary tract along the natural cavity, and the X-ray is used for positioning in the penetrating process.
The radio frequency ablation catheter is accurately guided to the focus through the guide wire 20, and the operation process is as follows: after the guide wire 20 is penetrated, one end of the guide wire 20 outside the body is penetrated into the liquid injection cavity 9 of the working end of the insulating block 11 of the radiofrequency ablation catheter, at the moment, the guide wire 20 is kept still, the radiofrequency ablation catheter is penetrated along the guide wire 20 to the focus direction through the liquid injection cavity 9, the position of the metal ring of the working end of the radiofrequency ablation catheter is observed in real time under x-ray, and the metal ring of the working end of the radiofrequency ablation catheter is penetrated to the focus.
And then performing radio frequency ablation treatment, after the radio frequency ablation is completed, injecting a contrast medium, firstly installing an injection part, specifically, sequentially passing a guide wire 20 through the first luer female connector 1, the capless luer male connector 14 and the hose 19, connecting the capless luer male connector 14 and the first luer female connector 1, pressing down a locking switch of the Robert clamp 18 on the hose 19, and butting the injector 21 and the second luer female connector 15 to inject the contrast medium.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A radio frequency ablation catheter convenient for puncture, introduction and fixation of a guide wire and liquid injection is characterized by comprising a radio frequency ablation catheter main body and a liquid injection component, wherein the radio frequency ablation catheter main body comprises a multi-cavity flexible tube and a handle, a liquid injection cavity, a supporting cavity and a conductive wire cavity are arranged in the multi-cavity flexible tube, the liquid injection cavity penetrates through the front end and the rear end of the multi-cavity flexible tube, the liquid injection cavity is used for liquid injection and placement of the guide wire, an elastic supporting wire is arranged in the supporting cavity, a conductive wire is arranged in the conductive wire cavity, the rear end of the multi-cavity flexible tube is fixed in the handle, the front end of the multi-cavity flexible tube is provided with an insulating block, the liquid injection cavity penetrates through the insulating block and is communicated with the outside, a conductive working ring is sleeved outside the front end of the multi-cavity flexible tube, the conductive working ring is, the rear end of the lead is connected with the radio frequency connector; the liquid injection part comprises a main channel and an injection channel arranged on one side of the main channel, the injection channel is communicated with the main channel, the main channel is connected with the rear end of the multi-cavity flexible pipe, the main channel is communicated with the liquid injection cavity, the main channel is used for placing the guide wire, a locking piece is arranged on the main channel, and the injection channel is used for connecting liquid injection equipment.
2. The radiofrequency ablation catheter capable of facilitating puncture, introduction and fixation of a guide wire for injection of liquid as claimed in claim 1, wherein the handle has a first connector at a rear end thereof, the first connector is connected to a rear end of the flexible multi-lumen tube, the main channel is a flexible tube, the liquid injection member further comprises a three-way valve and a locking member, the three-way valve comprises a second connector vertically arranged and a third connector and a fourth connector horizontally arranged, the third connector is used for being connected to the first connector, the fourth connector is used for being connected to the flexible tube, the flexible tube is provided with the locking member, and the second connector is used for being connected to the liquid injection device.
3. The rf ablation catheter for facilitating puncture, introduction, securement of a guide wire and for injection of fluid of claim 2, wherein the first connector is a first female luer connector, the second connector is a second female luer connector, the third connector is a male capless luer connector, the fourth connector is a male luer connector, and the locking member is a robert clamp.
4. The radiofrequency ablation catheter facilitating puncture, introduction, and fixation of a guide wire and for injection of fluid of claim 1, wherein the radiofrequency ablation catheter body further comprises a radiofrequency wire, and both ends of the radiofrequency wire are connected to the guide wire and the radiofrequency connector, respectively.
5. The rf ablation catheter for facilitating puncture, introduction, securement of a guide wire and for infusion of fluid of claim 1, further comprising an anchor by which the multi-lumen flexible tube is secured within the handle.
6. The rf ablation catheter for facilitating puncture, introduction, securement of a guide wire and for infusion of a fluid according to claim 1, wherein the forward end of the multilumen flexible tube is provided with an annular groove, the electrically conductive working ring is mounted in the annular groove, and the inner side of the electrically conductive working ring is welded to the forward end of the guide wire.
7. The rf ablation catheter for facilitating puncture, introduction, securement of a guide wire and injection of fluid of claim 6, wherein the electrically conductive working ring is a metal ring.
8. The rf ablation catheter for facilitating puncture, introduction, securement of a guide wire and for infusion of fluids of claim 1, wherein the flexible support wire is a support wire, the insulating block is bullet-shaped, and the multi-lumen flexible tube is made of a hydrophilic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133423.2A CN112137714A (en) | 2020-10-21 | 2020-10-21 | Radio frequency ablation catheter convenient for puncture, guide, fixable guide wire and liquid injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133423.2A CN112137714A (en) | 2020-10-21 | 2020-10-21 | Radio frequency ablation catheter convenient for puncture, guide, fixable guide wire and liquid injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112137714A true CN112137714A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011133423.2A Pending CN112137714A (en) | 2020-10-21 | 2020-10-21 | Radio frequency ablation catheter convenient for puncture, guide, fixable guide wire and liquid injection |
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| Country | Link |
|---|---|
| CN (1) | CN112137714A (en) |
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2020
- 2020-10-21 CN CN202011133423.2A patent/CN112137714A/en active Pending
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