CN220001904U - Variable diameter ablation catheter with cardiac modeling - Google Patents
Variable diameter ablation catheter with cardiac modeling Download PDFInfo
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- CN220001904U CN220001904U CN202321538883.2U CN202321538883U CN220001904U CN 220001904 U CN220001904 U CN 220001904U CN 202321538883 U CN202321538883 U CN 202321538883U CN 220001904 U CN220001904 U CN 220001904U
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- catheter
- fixedly connected
- variable diameter
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- diameter
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- 238000002679 ablation Methods 0.000 title claims abstract description 45
- 230000000747 cardiac effect Effects 0.000 title claims abstract description 32
- 238000005452 bending Methods 0.000 claims abstract description 39
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical group [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims abstract description 8
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical group [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 11
- 210000003462 vein Anatomy 0.000 abstract description 8
- 210000003492 pulmonary vein Anatomy 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 206010003658 Atrial Fibrillation Diseases 0.000 description 10
- 238000013507 mapping Methods 0.000 description 8
- 238000013153 catheter ablation Methods 0.000 description 2
- 210000003191 femoral vein Anatomy 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 206010019280 Heart failures Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001121 heart beat frequency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model relates to a variable-diameter ablation catheter with cardiac modeling, which is characterized in that a variable-diameter pull wire is pushed and pulled by sliding a variable-diameter button, so that a nickel-titanium ring is deformed, the diameter of an electrode ring is regulated, modeling of vein ports with different sizes is realized, the mode of the ablation catheter can be directly switched after the cardiac modeling is completed, the tightness degree of the variable-diameter pull wire is changed by rotating a bending regulating rotating wheel during ablation, a multi-cavity tube is bent, the contact degree of the electrode ring and a target tissue is observed in cooperation with an endoscope catheter, and a good contact effect of the electrode ring and the pulmonary vein port is ensured in the ablation process.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a variable-diameter ablation catheter with cardiac modeling.
Background
Atrial fibrillation (abbreviated as atrial fibrillation) is the most common sustained arrhythmia. The incidence of atrial fibrillation increases with age, and the incidence of atrial fibrillation can reach 10% for people over 75 years old. When the atrial fibrillation occurs, the atrial activation frequency reaches 300 to 600 times/minute, the heartbeat frequency is often rapid and irregular, sometimes can reach 100 to 160 times/minute, the atrial fibrillation is much faster than that of a normal person, and the atrial fibrillation is absolutely irregular, so that the atrial fibrillation loses an effective contraction function. The prevalence of atrial fibrillation is also closely related to coronary heart disease, hypertension, heart failure, and the like.
Cardiac ablation is usually needed when atrial fibrillation is treated, the heart is modeled by using a mapping catheter before cardiac ablation, the diameter of the mapping catheter in the prior art is fixed, the catheter is difficult to enter a vein port with smaller diameter due to different sizes of pulmonary vein ports of the same patient, the modeling time is increased when multiple electrical signal mapping is needed for the vein port with larger diameter, and the mapping catheter is required to be withdrawn from a femoral vein after modeling is completed and replaced by an ablation catheter again, so that the complexity of operation is increased.
Disclosure of Invention
Based on this, it is necessary to provide a variable diameter ablation catheter and an ablation system with cardiac modeling, which are necessary to solve the problems that the diameter of the mapping catheter in the prior art is fixed, the catheter is difficult to enter the vein port with smaller diameter due to different sizes of the pulmonary vein port of the same patient, the modeling time is increased because of the need of performing multiple electrical signal mapping on the vein port with larger diameter, and the mapping catheter is withdrawn from the femoral vein after the modeling is completed and replaced by the ablation catheter again, thereby increasing the complexity of the operation.
The utility model provides a variable diameter ablation catheter with cardiac modeling, comprising:
an electrode ring;
the electrode ring is nested outside the electrode outer tube;
the catheter component comprises a head catheter, a multi-cavity tube, a variable-diameter catheter and an endoscope catheter, wherein the first end of the head catheter is fixedly connected with the first end of the electrode outer tube, the first end of the multi-cavity tube is fixedly connected with the second end of the head catheter, the first end of the variable-diameter catheter is fixedly connected with the second end of the multi-cavity tube, and the first end of the endoscope catheter is fixedly connected with the head catheter;
the first end of the reducing stay wire is sleeved with the electrode outer tube;
the second end of the reducing stay wire is fixedly connected to the reducing button;
the first end of the bending-adjusting stay wire is fixedly connected to the head catheter;
the second end of the bending-adjusting pull wire is fixedly connected to the bending-adjusting rotating wheel;
the nickel titanium ring is fixedly connected to the first end of the reducing stay wire.
The utility model relates to a variable-diameter ablation catheter with cardiac modeling, which is characterized in that a variable-diameter pull wire is pushed and pulled by sliding a variable-diameter button, so that a nickel-titanium ring is deformed, the diameter of an electrode ring is regulated, modeling of vein ports with different sizes is realized, the mode of the ablation catheter can be directly switched after the cardiac modeling is completed, the tightness degree of the variable-diameter pull wire is changed by rotating a bending regulating rotating wheel during ablation, a multi-cavity tube is bent, the contact degree of the electrode ring and a target tissue is observed in cooperation with an endoscope catheter, and a good contact effect of the electrode ring and the pulmonary vein port is ensured in the ablation process.
Drawings
Fig. 1 is a schematic structural diagram of a variable diameter ablation catheter with cardiac modeling according to an embodiment of the present utility model.
Fig. 2 is an enlarged schematic view of circle a in fig. 1 of a variable diameter ablation catheter with cardiac modeling according to an embodiment of the present utility model.
Fig. 3 is a schematic illustration of an electrode ring connection for a variable diameter ablation catheter with cardiac modeling according to an embodiment of the present utility model.
Fig. 4 is a schematic illustration of a multi-lumen tube with a cardiac modeling variable diameter ablation catheter according to an embodiment of the present utility model.
Fig. 5 is a schematic illustration of a handle of a variable diameter ablation catheter with cardiac modeling according to an embodiment of the present utility model.
Fig. 6 is an elevation view of a head catheter with a variable diameter ablation catheter with cardiac modeling in accordance with an embodiment of the present utility model.
Fig. 7 is a schematic illustration of the connection of catheter components with a variable diameter ablation catheter with cardiac modeling according to an embodiment of the utility model.
Reference numerals:
100. an electrode ring; 101. an electrode outer tube; 101a, a first end of an outer electrode tube;
101b, a second end of the outer electrode tube; 103. reducing stay wire; 103a, a first end of a variable diameter stay wire;
103b, a second end of the variable diameter stay wire; 104. a diameter-variable button; 105. bending and pulling the wire;
105a, a first end of the buckle-pull wire; 105b, a second end of the buckle-pull wire; 106. bending turning wheels;
107. nickel titanium ring; 108. an inner peering hole; 109. a fixing buckle; 200. a catheter component;
201. a head catheter; 201a, a first end of a head catheter; 201b, a second end of the head catheter;
202. a multi-lumen tube; 202a, endoscope catheter lumen; 202b, bending and pulling the wire cavity;
202c, a variable-diameter stay wire cavity; 202d, a first end of the multi-lumen tube; 202e, a second end of the multi-lumen tube;
203. a variable diameter catheter; 204. an endoscope catheter; 204a, a first end of an endoscope conduit;
204b, a second end of the endoscope conduit; 300. a handle; 301. a connection port;
302. an endoscope socket; 303. and a tail wire connecting wire.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model provides a variable diameter ablation catheter with cardiac modeling. It should be noted that the variable diameter ablation catheter with cardiac modeling provided by the present utility model is applicable to any kind of ablation catheter.
As shown in fig. 1, in an embodiment of the present utility model, the variable diameter ablation catheter with cardiac modeling includes an electrode ring 100, an electrode outer tube 101, a catheter component 200, a variable diameter pull wire 103, a variable diameter button 104, a bending pull wire 105, a bending turn wheel 106, and a nitinol ring 107.
The electrode ring 100 is nested outside the electrode outer tube 101. The catheter assembly 200 comprises a head catheter 201, a multi-lumen tube 202, a variable diameter catheter 203 and an endoscope catheter 204, wherein a first end 201a of the head catheter is fixedly connected to a first end 101a of the electrode outer tube, a first end 202d of the multi-lumen tube is fixedly connected to a second end 201b of the head catheter, a first end 203a of the variable diameter catheter is fixedly connected to a second end 202e of the multi-lumen tube, and a first end 204a of the endoscope catheter is fixedly connected to the head catheter 201. The first end 103a of the reducing stay wire is sleeved with the electrode outer tube 101. The second end 103b of the variable diameter wire is fixedly connected to the variable diameter button 104. The first end 105a of the bending wire is fixedly connected to the head catheter 201. The second end 105b of the bending wire is fixedly connected to the bending wheel 106. The nitinol ring 107 is fixedly attached to the first end 103a of the variable diameter puller wire.
The utility model relates to a variable-diameter ablation catheter with cardiac modeling, which is characterized in that a variable-diameter push button 104 is slid to push and pull a variable-diameter stay wire 103, so that a nickel-titanium ring 107 is deformed, the diameter of an electrode ring 100 is regulated, modeling of vein ports with different sizes is realized, the mode of the ablation catheter can be directly switched after the cardiac modeling is finished, when the ablation is realized, the tightness degree of the bending stay wire 105 is changed by rotating a bending wheel 106, the multi-cavity tube 202 is bent, the contact degree of the electrode ring 100 and a target tissue is observed in cooperation with an endoscope catheter 204, and a good contact effect between the electrode ring 100 and the pulmonary vein port is ensured in the ablation process.
As shown in fig. 6, in an embodiment of the present utility model, the head catheter 201 is a hollow circular tube, the first end 201a of the head catheter is provided with the endoscope hole 108, the outer electrode tube 101 is located at one side of the endoscope hole 108, and the first end 204a of the endoscope catheter is inserted into the endoscope hole 108.
Specifically, the diameter of the endoscope aperture 108 is the same as the diameter of the endoscope conduit 204.
In this embodiment, the endoscope catheter 204 is assisted to observe the relevant part through the endoscope hole 108, and the image observed by the endoscope catheter 204 is transmitted to the display through the endoscope socket 302, so that the user can operate conveniently.
As shown in fig. 2, in an embodiment of the present utility model, the nitinol ring 107 and the diameter-variable pull wire 103 are fixedly connected with a plurality of fixing buckles 109, the plurality of fixing buckles 109 are arranged on the diameter-variable pull wire 103 at equal intervals, the nitinol ring 107 and the diameter-variable pull wire 103 are fixedly connected inside the electrode outer tube 101, and the second end 103b of the diameter-variable pull wire passes through the head catheter 201, the multi-lumen tube 202 and the diameter-variable catheter 203 in sequence and is fixedly connected to the diameter-variable button 104.
Specifically, the material of the fixing buckle 109 may be stainless steel.
In this embodiment, the nitinol ring 107 and the reducing pull wire 103 are fixedly connected together by the plurality of sets of fixing buckles 109, the plurality of sets of fixing buckles 109 can effectively improve the stability of connection between the nitinol ring 107 and the reducing pull wire 103, and after the reducing pull wire 103 is connected with the reducing button 104, the diameter of the nitinol ring 107 can be adjusted by adjusting the reducing button 104, so as to adjust the diameter of the electrode ring 100 connected outside the electrode outer tube 101.
As shown in fig. 3, in an embodiment of the present utility model, the bending wheel 106 is provided with an anti-slip groove, and the second end 105 of the bending wire is fixedly connected to the inside of the bending wheel 106.
Specifically, a slider is disposed in the bending wheel 106, and the second end 105b of the bending wire is fixedly connected to the slider.
In this embodiment, the bending adjustment turning wheel 106 is turned to adjust the position of the slider, so that the slider moves back and forth, and further drives the bending adjustment stay wire 105 connected to the slider to be tensioned or loosened, so that the multi-cavity tube 202 is bent, and the anti-slip slot can increase the friction force of the bending adjustment turning wheel 106, so that the use is convenient.
As shown in fig. 4, in an embodiment of the present utility model, an endoscope catheter lumen 202a, a bending wire lumen 202b and a reducing wire lumen 202c are provided in the multi-lumen tube 202, the endoscope catheter 204 is fixedly connected to the endoscope catheter lumen 202a, the bending wire 105 is fixedly connected to the bending wire lumen 202b, and the reducing wire 103 is fixedly connected to the reducing wire lumen 202c.
Specifically, the included angles between the endoscope catheter lumen 202a, the bending wire lumen 202b and the reducing wire lumen 202c are equal.
In this embodiment, by fixedly connecting the endoscope conduit 204 to the endoscope conduit lumen 202a, fixedly connecting the bending wire 105 to the bending wire lumen 202b, and fixedly connecting the reducing wire 103 to the reducing wire lumen 202c to separate the endoscope conduit 204, the bending wire 105 and the reducing wire 103, the reducing wire 103 and the endoscope conduit 204 are prevented from being affected when the bending wire 105 is adjusted, and the bending wire 105 and the endoscope conduit 204 are prevented from being affected when the reducing wire 103 is adjusted.
As shown in FIG. 1, in one embodiment of the present utility model, the bending angle of the multi-lumen tube 202 is within an angle range of 0 degrees or more and 180 degrees or less, and the diameter of the nitinol ring 107 is within a numerical range of 15mm or more and 30mm or less.
In this embodiment, the angle of the multi-lumen tube 202 is adjusted to facilitate the adjustment of the view angle of the endoscope catheter 204, so as to facilitate the operation of a user, and the modeling of vein ports with different sizes is realized by adjusting the diameter of the nitinol ring 107, and the mode of the ablation catheter can be directly switched after the completion of cardiac modeling.
As shown in fig. 5, in an embodiment of the present utility model, the variable diameter ablation catheter with cardiac modeling further includes a handle 300, the bending wheel 106 is fixedly connected to a first end 300a of the handle, a second end 300b of the handle is fixedly connected to an endoscope socket 302, and the variable diameter button 104 is fixedly connected to the handle 300.
Specifically, the handle 300 is a cylinder having a hollow interior.
In this embodiment, the bending adjustment wheel 106 is adjusted to adjust the tightness of the bending adjustment wire 105, so that the multi-lumen tube 202 bends, and the diameter of the nitinol ring 107 is adjusted by sliding the diameter-variable button 104 to adjust the position of the diameter-variable wire 103, so as to adjust the diameter of the electrode ring 100.
As shown in fig. 5, in an embodiment of the present utility model, the first end 300a of the handle is provided with a connection port 301, the second end 203b of the variable diameter catheter is inserted into the connection port 301, the connection port 301 is a truncated cone, and the bending turning wheel 106 is located at the rear side of the connection port 301.
Specifically, the diameter of the variable diameter conduit 203 is equal to the inlet diameter of the connection port 301.
In this embodiment, the second end 203 of the variable diameter catheter is inserted into the handle 300 through the connection port 301, and the bending wire 105, the variable diameter wire 103, and the endoscope catheter 204 all extend into the handle 300 through the connection port 301.
As shown in fig. 5, in an embodiment of the present utility model, the second end 300b of the handle is fixedly connected to one end of the tail connection wire 303, and the other end of the tail connection wire 303 is fixedly connected to an external active host.
In this embodiment, the active host can complete modeling using a three-dimensional mapping system, provided by the tail connection 303 with an external active host.
In one embodiment of the present utility model, as shown in fig. 5, one end of the endoscope receiving socket 302 is fixedly connected to the second end 204b of the endoscope conduit, and the other end of the endoscope receiving socket 302 is connected to the endoscope display screen.
In this embodiment, when the pulmonary vein ostium is ablated, the endoscope catheter 204 can be bent along with the multi-lumen tube 202, and is connected with the display screen through the endoscope socket 302, so that the position of the electrode ring 100 is observed on the display screen in real time, the degree of adhesion between the electrode ring 100 and the target tissue is adjusted, and a good adhesion effect between the electrode ring 100 and the pulmonary vein ostium in the ablation process is further ensured.
The technical features of the above embodiments may be combined arbitrarily, and the steps of the method are not limited to the execution sequence, so that all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (10)
1. A variable diameter ablation catheter with cardiac modeling, the variable diameter ablation catheter with cardiac modeling comprising:
an electrode ring;
the electrode ring is nested outside the electrode outer tube;
the catheter component comprises a head catheter, a multi-cavity tube, a variable-diameter catheter and an endoscope catheter, wherein the first end of the head catheter is fixedly connected with the first end of the electrode outer tube, the first end of the multi-cavity tube is fixedly connected with the second end of the head catheter, the first end of the variable-diameter catheter is fixedly connected with the second end of the multi-cavity tube, and the first end of the endoscope catheter is fixedly connected with the head catheter;
the first end of the reducing stay wire is sleeved with the electrode outer tube;
the second end of the reducing stay wire is fixedly connected to the reducing button;
the first end of the bending-adjusting stay wire is fixedly connected to the head catheter;
the second end of the bending-adjusting pull wire is fixedly connected to the bending-adjusting rotating wheel;
the nickel titanium ring is fixedly connected to the first end of the reducing stay wire.
2. The variable diameter ablation catheter with cardiac modeling of claim 1, wherein the head catheter is a circular tube with a hollow interior, the first end of the head catheter is provided with an endoscopic hole, the outer electrode tube is positioned on one side of the endoscopic hole, and the first end of the endoscopic catheter is inserted into the endoscopic hole.
3. The variable diameter ablation catheter with heart modeling according to claim 2, wherein a plurality of groups of fixing buckles are fixedly connected to the outer parts of the nickel-titanium rings and the variable diameter stay wires, the plurality of groups of fixing buckles are arranged on the variable diameter stay wires at equal intervals, the nickel-titanium rings and the variable diameter stay wires are fixedly connected to the inner parts of the outer electrode tubes, and the second ends of the variable diameter stay wires sequentially pass through the head catheter, the multi-cavity tube and the variable diameter catheter and are fixedly connected to the variable diameter buttons.
4. The variable diameter ablation catheter with heart modeling according to claim 3, wherein an anti-slip groove is formed on the surface of the bending wheel, and the second end of the bending stay wire is fixedly connected to the inside of the bending wheel.
5. The variable diameter ablation catheter with cardiac modeling of claim 4, wherein an endoscope catheter lumen, a bend-adjusting wire lumen and a variable diameter wire lumen are provided in the multi-lumen tube, the endoscope catheter is fixedly connected to the endoscope catheter lumen, the bend-adjusting wire is fixedly connected to the bend-adjusting wire lumen, and the variable diameter wire is fixedly connected to the variable diameter wire lumen.
6. The variable diameter ablation catheter with cardiac modeling of claim 5, wherein the bending angle of the multi-lumen tube is in the range of 0 degrees or more and 180 degrees or less and the diameter of the nitinol ring is in the range of 15mm or more and 30mm or less.
7. The variable diameter ablation catheter with cardiac modeling of claim 1, further comprising a handle, wherein the deflection pulley is fixedly connected to a first end of the handle, wherein a second end of the handle is fixedly connected to an endoscope socket, and wherein the variable diameter button is fixedly connected to the handle.
8. The variable diameter ablation catheter with cardiac modeling of claim 7, wherein the first end of the handle is provided with a connection port, the second end of the variable diameter catheter is inserted into the connection port, the connection port is a truncated cone, and the deflection pulley is positioned at the rear side of the connection port.
9. The variable diameter ablation catheter with cardiac modeling of claim 8, wherein the second end of the handle is fixedly connected to one end of a tail wire connection, and the other end of the tail wire connection is fixedly connected to an external active host.
10. The variable diameter ablation catheter with cardiac modeling of claim 9, wherein one end of the endoscope interface is fixedly connected to the second end of the endoscope catheter and the other end of the endoscope interface is connected to an endoscope display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321538883.2U CN220001904U (en) | 2023-06-16 | 2023-06-16 | Variable diameter ablation catheter with cardiac modeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321538883.2U CN220001904U (en) | 2023-06-16 | 2023-06-16 | Variable diameter ablation catheter with cardiac modeling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220001904U true CN220001904U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321538883.2U Active CN220001904U (en) | 2023-06-16 | 2023-06-16 | Variable diameter ablation catheter with cardiac modeling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220001904U (en) |
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2023
- 2023-06-16 CN CN202321538883.2U patent/CN220001904U/en active Active
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