CN114271929B - Self-control ablation catheter suitable for radial artery - Google Patents
Self-control ablation catheter suitable for radial artery Download PDFInfo
- Publication number
- CN114271929B CN114271929B CN202111606597.0A CN202111606597A CN114271929B CN 114271929 B CN114271929 B CN 114271929B CN 202111606597 A CN202111606597 A CN 202111606597A CN 114271929 B CN114271929 B CN 114271929B
- Authority
- CN
- China
- Prior art keywords
- self
- radial artery
- ablation catheter
- folding
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a self-control ablation catheter suitable for a radial artery, belonging to the technical field of interventional medical devices, and the self-control ablation catheter suitable for the radial artery comprises: the deformation wire is used for driving the upper structure to deform into a preset shape; the heating wire is wound outside the deformation wire and forms a plurality of turns of coils; and the folding structures are arranged on the coils at intervals and are used for enabling two adjacent turns of the coils to be in contact conduction when the deformation wire is in the preset shape. The heating conditions of the inner side and the outer side of the heating wire are adjusted through the folding structure, so that the heat productivity of the inner side is greatly reduced, the heat is normally released from the outer side, a preset treatment effect can be achieved, the overall heat productivity and power consumption are greatly reduced, the required energy is lower, and the safety is higher.
Description
Technical Field
The invention belongs to the technical field of interventional medical devices, and particularly relates to a self-control ablation catheter suitable for a radial artery.
Background
The traditional approach to coronary intervention (PCI) is the femoral artery. The percutaneous, transbrachial and transfemoral artery random comparison studies performed in 1995 show that the percutaneous PCI and transfemoral artery path have no significant difference in the aspects of operation success rate, cardiac complications, equipment consumption, fluoroscopy time and the like, and the vascular related complications are obviously reduced except that the puncture success rate is slightly lower. The experience of the PCI through the radial artery is firstly reported in 1999 in China, and a plurality of hospitals develop the work in China at present. The PCI through the radial artery has the advantages of convenient hemostasis, few vascular complications, unlimited activity of patients, quick recovery, no influence on continuous use of anticoagulant or thrombolytic drugs and the like, and is gradually the mainstream of the PCI through the radial artery recently.
The radial artery approach has the advantages of small wound, few complications of local vascular bleeding, no position restriction after operation, little pain of patients, reduction of hospitalization time and the like, and is clinically adopted at present.
A renal artery radiofrequency ablation catheter as set forth in CN106852703A, comprising a modulation assembly for modulating a nerve, the modulation assembly comprising an electrode for delivering modulation energy to the nerve and a carrier member for carrying said electrode, the electrode comprising an electrode wire wound on the carrier member, the carrier member having a first shape in which the modulation assembly is arranged adapted to move in a blood vessel and a second shape; in the second shape, the electrode is in a position suitable for delivering modulation energy to the nerve. Compared with the prior art, the electrode extends on the bearing component for a longer length, so that the renal artery radiofrequency ablation catheter has better ablation effect.
The treatment state of the existing ablation catheter in the treatment of focus has two major categories of a direction-controllable single electrode structure and a variable outer diameter multi-electrode structure, wherein the variable outer diameter multi-electrode structure comprises a basket structure, a balloon structure and a multi-electrode large spiral structure. The heating condition during the multi-electrode spiral catheter treatment at present shows that the temperature is increased in the inner side and the outer side of the spiral, the part playing the treatment role is only the outer part of the spiral structure closely attached to the inner wall of a blood vessel, and the internal heating can cause the damage of kidney parts such as hemolysis, blood coagulation, blood cell destruction and the like.
Disclosure of Invention
The invention aims to provide a self-control ablation catheter suitable for a radial artery, and aims to solve the problems of the prior self-control ablation catheter in the using process in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a self-controlling ablation catheter adapted for use in a radial artery, comprising:
the deformation wire is used for driving the upper structure to deform into a preset shape;
the heating wire is wound outside the deformation wire and forms a plurality of turns of coils;
and the folding structures are arranged on the coils at intervals and are used for enabling two adjacent turns of the coils to be in contact conduction when the deformation wire is in the preset shape.
Preferably, the predetermined shape is a helical structure.
Preferably, the closure structure is located on the inner diameter side of the predetermined shape of the deformation wire.
Preferably, the folding structure comprises a first folding tooth and a second folding tooth which are connected in a separable mode.
Preferably, the first folding teeth and the second folding teeth are arranged on the opposite sides of the two turns of coils respectively.
Preferably, the contact surface of the first folding tooth is matched with the second folding tooth.
Preferably, the closure structure is made of a low resistivity material.
Preferably, the heating wire is made of a high-resistivity material, and the surface of the heating wire is coated with a high-temperature electric insulation coating.
Preferably, the shape-changing wire is a shape-memory alloy, including but not limited to nitinol.
Preferably, the material of the closure structure is platinum-iridium alloy, manganese-copper precision resistance alloy, constantan alloy, nickel-chromium resistance alloy or P-type gallium nitride ohmic contact electrode alloy.
Compared with the prior art, the invention has the beneficial effects that:
the pipe that this patent provided is behind forming helical structure, the structure that folds that is located the internal diameter side of heater contacts each other, because fold the structure and choose low resistivity material to make for use, calorific capacity is relatively few, and the coil of heater is because being in the short circuit by the short circuit of spiral inside part, make inboard calorific capacity reduce by a wide margin, and the outside is normally exothermic, can play predetermined treatment, the inboard is exothermic hardly, only the outside is exothermic, holistic calorific capacity and power consumption have greatly been reduced, required energy is lower, the security is higher.
The heating conditions of the inner side and the outer side of the heating wire are adjusted through the folding structure, the structure is simple, and the processing cost is relatively low.
Drawings
FIG. 1 is a schematic structural view of the straight state of the present invention;
FIG. 2 is a schematic view of the folding structure of the present invention;
FIG. 3 is a schematic side view of the spiral state of the present invention;
fig. 4 is a schematic diagram of the spiral state front structure of the present invention.
In the figure: 10. deforming the silk; 20. a heater; 21. a coil; 30. a folding structure; 31. folding the first teeth; 32. and folding the second teeth.
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.
Referring to fig. 1-4, the present invention provides a technical solution: a self-controlling ablation catheter adapted for use in a radial artery, comprising:
the deformation wire 10 is used for driving the upper structure to deform into a preset shape;
the heating wire 20 is wound outside the deformation wire 10, and a plurality of turns of coils 21 are formed;
the folding structure 30 is arranged on one side of the deformation wire 10, and the folding structure 30 is arranged on the coil 21 at intervals and used for enabling two adjacent turns of the coil 21 to be in contact conduction when the deformation wire 10 is in a preset shape.
In the present embodiment, as shown in fig. 1, the filament 10 is in a straight structure and is used for entering into a blood vessel through a radial artery access, the heating wire 20 is uniformly wound on the outer portion of the filament 10, and the first folding tooth 31 and the second folding tooth 32 in the folding structure 30 are not in contact with each other, which may also be referred to as a delivery state.
Referring to fig. 3-4, the shape-changing wire 10 is deformed into a spiral shape and drives the heating wire 20 thereon to deform, and the folding structures 30 on the inner diameter side of the shape-changing wire 10 are in contact with each other and are in conduction, which can be referred to as a treatment state.
The directions of arrows in fig. 1, 3 and 4 are all the current flowing directions, and here it can be seen that in the delivery state, the current normally flows along the heating wire 20, and in the treatment state, the inner sides of the adjacent coils 21 are short-circuited.
The heating wire 20 is added with the folding structure 30 at intervals, so that the short circuit of the inner side of the coil 21 is avoided, and the outer edge of the spiral structure does not generate heat without current.
Specifically, the predetermined shape is a helical structure.
In the present embodiment, the predetermined shape in which the deformation wire 10 is deformed is a helical structure.
Specifically, the closure structure 30 is located on the inner diameter side of the predetermined shape of the deformation wire 10.
In this embodiment, when the deformation wire 10 drives the heating wire 20 to deform into the predetermined shape, the folding structure 30 is located on the inner diameter side of the spiral structure.
Specifically, the folding structure 30 includes a first folding tooth 31 and a second folding tooth 32 which are detachably connected.
In this embodiment, the first folding tooth 31 and the second folding tooth 32 are separated and do not contact each other in the delivery state, and the first folding tooth 31 and the second folding tooth 32 contact each other in the treatment state, so that the two corresponding coils 21 are conducted.
Specifically, a first folding tooth 31 and a second folding tooth 32 are respectively arranged on opposite sides of the two turns of coils 21.
In this embodiment, the heating wire 20 is added to the folding structure 30 every other gap.
Two adjacent turns of the coil 21, the first folding tooth 31 and the second folding tooth 32 which are oppositely arranged on the coil 21 can be regarded as a heating unit, and the outer wall of the coil 21 between the two heating units is not conducted.
Specifically, the contact surface of the first folding tooth 31 is matched with the second folding tooth 32.
In this embodiment, the first folding teeth 31 and the second folding teeth 32 may further have convex teeth and concave grooves for butt-joint contact, or have adaptive saw-tooth structures.
Specifically, the closure structure 30 is made of a low resistivity material.
In this embodiment, the folding structure 30 is made of a material with low resistivity, and is folded to communicate with the heating wire 20 in the treatment state, and unfolded to not play a role in the delivery state.
Specifically, the heating wire 20 is made of a high-resistivity material, and the surface thereof is coated with a high-temperature electrically insulating coating.
In this embodiment, the heating wire 20 is made of a high resistivity material, the heating wire 20 may be made of tungsten, nickel-chromium alloy, or the like, and a high temperature electrical insulating coating is coated on the surface of the heating wire 20 to prevent accidental conduction between the heating wires 20.
The high-temperature electric insulating coating takes alumina, silicon nitride and the like as fillers and takes ceramic particles as high-temperature film forming substances as main components to form the high-temperature resistant insulating coating, and the material does not obstruct heat transfer.
After the heating wire 20 is powered on, the temperature can be rapidly increased to the treatment temperature, the treatment temperature is 60-100 ℃, and then the temperature of the deformation wire 10 (shape memory alloy) is increased.
Specifically, the shape-changing wire 10 is a shape-memory alloy, including but not limited to nitinol.
In the present embodiment, the shape memory alloy is mainly selected from a circular cross-sectional type, and the shape memory alloy and the heater 20 can be deformed together as a whole.
The melting point of the shape memory alloy is much higher than the treatment temperature, so the temperature of the heating wire 20 does not burn out the memory alloy.
When the temperature of the heating wire 20 is raised to the treatment temperature, the temperature of the memory alloy exceeds the deformation temperature, and the catheter is in the treatment state at the moment, as shown in fig. 4, the memory alloy returns to the preset spiral shape, the folding structures 30 are contacted and conducted at the moment, and the heating wire 20 at the inner part of the spiral is in short circuit, so that the heating value at the inner side is greatly reduced, and the heating wire at the outer side normally releases heat, and the preset treatment effect can be achieved.
Specifically, the material of the folding structure 30 is platinum-iridium alloy, manganese-copper precision resistance alloy, constantan alloy, nickel-chromium series resistance alloy or P-type gallium nitride ohmic contact electrode alloy.
In this embodiment, the material of the folding structure 30 is selected from low-resistance materials such as platinum-iridium alloy, manganese-copper precision resistance alloy, constantan alloy, nickel-chromium series resistance alloy, or P-type gallium nitride ohmic contact electrode alloy (P-type GaN).
The working principle and the using process of the invention are as follows: the whole device is in a conveying state, so that the catheter enters a radial artery blood vessel as a whole, the deformation wire 10 is in a straight structure at the moment, the heating wire 20 is uniformly wound outside the deformation wire 10, the first folding teeth 31 and the second folding teeth 32 in the folding structure 30 are not in contact with each other and are not communicated with each other, after the heating wire 20 reaches a preset treatment position, the temperature of the heating wire 20 is rapidly increased to the treatment temperature after the heating wire is powered on, the temperature is 60-100 ℃ during treatment, the deformation wire 10 is heated along with the heating wire, when the deformation temperature is exceeded, the deformation wire 10 is deformed to enter the treatment state, the folding structures 30 on the inner diameter side of the deformation wire 10 are in contact with each other, the heating wire 20 is communicated through the folding structures 30, the heating amount is relatively small, and the coils 21 of the heating wire 20 on the spiral inner side portion are short-circuited through the folding structures 30, the heating amount on the inner side is greatly reduced, the outer side normally releases heat, and the preset treatment effect can be achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A self-controlling ablation catheter adapted for use in a radial artery, comprising: the method comprises the following steps:
the deformation wire (10) is used for driving the upper structure to deform into a preset shape;
the heating wire (20) is wound outside the deformation wire (10) and forms a plurality of turns of coils (21);
and the folding structures (30) are arranged on one side of the deformation wire (10), and the folding structures (30) are arranged on the coil (21) at intervals and are used for enabling two adjacent turns of the coil (21) to be in contact conduction when the deformation wire (10) is in the preset shape.
2. A self-controlling ablation catheter adapted for use in a radial artery, in accordance with claim 1, wherein: the predetermined shape is a helical structure.
3. A self-controlling ablation catheter adapted for use in a radial artery, in accordance with claim 2, wherein: the closure structure (30) is located on the inner diameter side of the predetermined shape of the deformation wire (10).
4. A self-controlling ablation catheter adapted for use in a radial artery as claimed in claim 3, wherein: the folding structure (30) comprises a first folding tooth (31) and a second folding tooth (32) which are connected in a separable mode.
5. A self-controlling ablation catheter adapted for use in a radial artery as claimed in claim 4, wherein: and one sides of the two turns of coils (21) opposite to each other are respectively provided with a first folding tooth (31) and a second folding tooth (32).
6. A self-controlling ablation catheter adapted for use in a radial artery as claimed in claim 5, wherein: the contact surface of the first folding tooth (31) is matched with the second folding tooth (32) in arrangement.
7. A self-controlling ablation catheter adapted for use in a radial artery as claimed in claim 1, wherein: the closure structure (30) is made of a low resistivity material.
8. A self-controlling ablation catheter adapted for use in a radial artery, in accordance with claim 1, wherein: the heating wire (20) is made of a high-resistivity material, and a high-temperature electric insulation coating is coated on the surface of the heating wire.
9. A self-controlling ablation catheter adapted for use in a radial artery, in accordance with claim 1, wherein: the shape-changing wire (10) is a shape-memory alloy, including but not limited to nitinol.
10. A self-controlling ablation catheter adapted for use in a radial artery as claimed in claim 7, wherein: the material of the folding structure (30) is platinum-iridium alloy, manganese-copper precision resistance alloy, constantan alloy, nickel-chromium series resistance alloy or P-type gallium nitride ohmic contact electrode alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111606597.0A CN114271929B (en) | 2021-12-26 | 2021-12-26 | Self-control ablation catheter suitable for radial artery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111606597.0A CN114271929B (en) | 2021-12-26 | 2021-12-26 | Self-control ablation catheter suitable for radial artery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114271929A CN114271929A (en) | 2022-04-05 |
| CN114271929B true CN114271929B (en) | 2023-04-07 |
Family
ID=80875662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111606597.0A Active CN114271929B (en) | 2021-12-26 | 2021-12-26 | Self-control ablation catheter suitable for radial artery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114271929B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114711955B (en) * | 2022-05-11 | 2022-11-01 | 上海安通医疗科技有限公司 | Electric control ablation catheter for radial artery |
| CN115655091B (en) * | 2022-10-19 | 2023-05-12 | 秦皇岛市政建设集团有限公司 | Assembled beam column node warp early warning monitoring devices |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442659A (en) * | 2011-01-28 | 2013-12-11 | 美敦力阿迪安卢森堡有限公司 | Ablation catheter equipped with shape memory material |
| JP2017123904A (en) * | 2016-01-12 | 2017-07-20 | 清明 本間 | Catheter and catheter system |
| CN113693717A (en) * | 2021-08-30 | 2021-11-26 | 上海安通医疗科技有限公司 | Radio frequency ablation catheter for radial artery access |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8934988B2 (en) * | 2012-03-16 | 2015-01-13 | St. Jude Medical Ab | Ablation stent with meander structure |
| EP3254635B1 (en) * | 2015-02-03 | 2023-08-30 | Shanghai Golden Leaf Med Tec Co., Ltd. | Radio-frequency ablation catheter having spiral structure, and equipment thereof |
-
2021
- 2021-12-26 CN CN202111606597.0A patent/CN114271929B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442659A (en) * | 2011-01-28 | 2013-12-11 | 美敦力阿迪安卢森堡有限公司 | Ablation catheter equipped with shape memory material |
| JP2017123904A (en) * | 2016-01-12 | 2017-07-20 | 清明 本間 | Catheter and catheter system |
| CN113693717A (en) * | 2021-08-30 | 2021-11-26 | 上海安通医疗科技有限公司 | Radio frequency ablation catheter for radial artery access |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114271929A (en) | 2022-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114271929B (en) | Self-control ablation catheter suitable for radial artery | |
| JP4933098B2 (en) | Catheter design that facilitates positioning in the tissue to be diagnosed or processed | |
| US10543035B2 (en) | Devices and methods for therapeutic heat treatment | |
| JP5047963B2 (en) | Multipolar virtual electrode catheter with at least one surface electrode and ablation method | |
| JP6308683B2 (en) | Balloon type ablation catheter | |
| US20210106792A1 (en) | Guidewires and related methods and systems | |
| US7914528B2 (en) | Ablation catheter tip for generating an angled flow | |
| EP3049007B1 (en) | Spiral bipolar electrode renal denervation balloon | |
| CN105473091B (en) | Renal denervation balloon catheter with co-movable electrode supports | |
| US7419489B2 (en) | Ablation catheter assembly having a virtual electrode comprising portholes | |
| CN110234290A (en) | Catheter electrode for energy management | |
| JP2009504364A (en) | Multipolar multi-lumen virtual electrode catheter having at least one surface electrode and ablation method | |
| US20120197246A1 (en) | Ablation catheter | |
| JP2012532737A (en) | Open-filled cautery catheter with turbulent flow | |
| US20060084969A1 (en) | Endovascular catheter and method of use | |
| WO2015057961A1 (en) | Balloon catheters with flexible conducting wires and related methods of use and manufacture | |
| US20170296260A1 (en) | Ablation medical device with basket | |
| WO2015061457A1 (en) | Embedded thermocouple in denervation flex circuit | |
| WO2010113915A1 (en) | Guide wire and balloon-equipped ablation catheter system with same | |
| WO2022171142A1 (en) | Ablation catheter, ablation device and ablation system | |
| CN113693717B (en) | Radio frequency ablation catheter capable of being used for radial artery access | |
| CN110811810A (en) | Left auricle ablation plugging device | |
| CN114711955B (en) | Electric control ablation catheter for radial artery | |
| Device | The “OneShot” Irrigated Balloon-Mounted Spiral Electrode Renal | |
| Victory | Asymptomatic Cerebral Embolism and Atrial Fibrillation Ablation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |