CN117159130B - Natural cavity ablation electrode - Google Patents
Natural cavity ablation electrode Download PDFInfo
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- CN117159130B CN117159130B CN202311236100.XA CN202311236100A CN117159130B CN 117159130 B CN117159130 B CN 117159130B CN 202311236100 A CN202311236100 A CN 202311236100A CN 117159130 B CN117159130 B CN 117159130B
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- 238000002679 ablation Methods 0.000 title claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims description 5
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- 230000008602 contraction Effects 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
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- 239000004642 Polyimide Substances 0.000 description 1
- 238000011298 ablation treatment Methods 0.000 description 1
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- 210000000436 anus Anatomy 0.000 description 1
- 238000007681 bariatric surgery Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
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- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 210000002429 large intestine Anatomy 0.000 description 1
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- 210000000813 small intestine Anatomy 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
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Abstract
The invention discloses a natural cavity ablation electrode, which comprises: a catheter, a first end of which is provided with a handle; a self-expanding electrode having a first side secured to a second end of the catheter and crimped around the catheter, the self-expanding electrode expanding radially of the catheter in a natural state; the rotating assembly is arranged on the guide pipe; the driving device is used for driving the rotating assembly to rotate; the control stay wire comprises a control winding part wound on the rotating assembly and a control pulling part connected with the second side edge of the self-expanding electrode and not wound on the rotating assembly. The invention can control the expansion and contraction of the self-expanding electrode by changing the rotation direction of the rotation component, has simple operation, and can complete the expansion and contraction of the electrode without depending on other air pump devices or liquid injection devices.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a natural cavity ablation electrode.
Background
The human body has many internal natural lumens, such as different parts of the gastrointestinal tract, many of which have inner liners or layers. The natural lumen of the body may include the esophagus, small intestine, large intestine, stomach, biliary pancreatic duct, residues after bariatric surgery, rectum and anus, etc., and the lining of these natural lumens may be prone to lesions. In some cases, the lining of the natural lumen is treated with a different ablation technique to prevent the lesion from spreading to nearby healthy tissue.
The natural cavity ablation electrode catheter in the prior art is generally provided with a balloon, a layer of bent flexible ablation electrode is designed outside the balloon, an air supply pipe/liquid injection pipe is designed inside the balloon, one end of the air supply pipe/liquid injection pipe is connected with an air pump device at the host end through a control handle, the other end of the air supply pipe/liquid injection pipe is communicated with the balloon, and the air supply mode is only described below as an example. When the balloon is required, the air pump device at the host computer end starts to supply air, and the air is filled into the balloon through the air supply pipe, so that the balloon is expanded, and the flexible ablation electrode on the outer surface of the balloon is supported to achieve the function of ablating the lesion part.
The current natural cavity ablation electrode catheter must rely on an air pump device and a balloon, the air pressure in the balloon is regulated by controlling the on-off electricity of the air pump device, the pressure of the balloon attached to the natural cavity is controlled, after the air pump device is electrified, the balloon is inflated, the inflation quantity is controlled by the electrified time, and if the air pump device fails, the inflation of the balloon cannot be controlled.
Therefore, how to complete the expansion and contraction of the electrode without depending on the air pump device is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Accordingly, the present invention is directed to a natural orifice ablation electrode that can expand and contract without depending on the air pump device.
In order to achieve the above object, the present invention provides the following technical solutions:
A natural orifice ablation electrode comprising:
A catheter, a first end of which is provided with a handle;
a self-expanding electrode having a first side secured to a second end of the catheter and crimped around the catheter, the self-expanding electrode expanding radially of the catheter in a natural state;
the rotating assembly is arranged on the guide pipe;
The driving device is used for driving the rotating assembly to rotate;
The control stay wire comprises a control winding part wound on the rotating assembly and a control pulling part connected with the second side edge of the self-expanding electrode and not wound on the rotating assembly.
Optionally, in the natural orifice ablation electrode, the first direction of rotation of the rotating assembly is the same as the curling direction of the self-expanding electrode around the catheter, and when the rotating assembly rotates along the first direction, the control pull wire pulls the self-expanding electrode to shrink.
Optionally, in the natural orifice ablation electrode, the length of the control pulling portion of the control pull wire is shortened when the rotating assembly rotates in the first direction.
Optionally, in the natural orifice ablation electrode, the rotating assembly is attached to a side of the self-expanding electrode near the handle.
Optionally, in the natural orifice ablation electrode, the rotating assembly includes:
The mounting base is fixedly sleeved on the guide pipe;
And the rotating sleeve is rotatably sleeved on the mounting base, and the control stay wire is wound on the rotating sleeve.
Optionally, in the natural orifice ablation electrode, a first limit flange is formed at an end of the mounting base away from the self-expanding electrode, a buckle is provided at an end of the mounting base close to the self-expanding electrode, and the buckle passes through a central hole of the rotating sleeve and is clamped on an end face of the rotating sleeve.
Optionally, in the natural orifice ablation electrode, a plurality of separation slits are formed in the mounting base near one end of the self-expanding electrode along a circumferential direction, so as to form a plurality of elastic arms, and one end of each elastic arm near the self-expanding electrode is provided with the buckle.
Optionally, in the natural orifice ablation electrode, a second limit flange is formed at one end of the rotating sleeve, which is close to the self-expanding electrode.
Optionally, in the natural orifice ablation electrode, the driving device is a traction stay wire, and the traction stay wire includes a traction winding part wound on the rotating component, and a traction part extending to the handle and not wound on the rotating component.
Optionally, in the natural orifice ablation electrode, the winding direction of the traction winding part and the winding direction of the control traction part are the same; and/or the number of the groups of groups,
The control stay wire and the traction stay wire are the same stay wire; and/or the number of the groups of groups,
The outer surface of the rotating assembly is provided with a spiral groove for accommodating the control winding part; and/or the number of the groups of groups,
The traction and pulling part is hidden in the catheter.
The natural cavity ablation electrode provided by the invention is characterized in that the self-expanding electrode is curled and wound on the catheter, and has certain elasticity, namely, the self-expanding electrode can expand radially to the catheter in a natural state without external force. The catheter is further provided with a rotating assembly, a control winding part for controlling the stay wire is wound on the rotating assembly, a control pulling part for controlling the stay wire is not wound on the rotating assembly, the control pulling part is connected with the second side edge of the self-expanding electrode, the length of the control winding part and the control pulling part can be changed by rotating the rotating assembly, the outer diameter of the self-expanding electrode is reduced when the length of the control pulling part is shortened, namely, the self-expanding electrode is in a contracted state, and the outer diameter of the self-expanding electrode is increased when the length of the control pulling part is prolonged, namely, the self-expanding electrode is in an expanded state. The invention can control the self-expanding electrode to act by driving the rotating component to rotate, can control the expansion and contraction of the self-expanding electrode by changing the rotating direction of the rotating component, has simple and convenient operation, and can complete the expansion and contraction of the electrode without depending on other air pump devices or liquid injection devices.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a natural orifice ablation electrode according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a natural orifice ablation electrode according to an embodiment of the present invention;
Fig. 3 is an enlarged view of a portion of a natural orifice ablation electrode at a rotating assembly in accordance with an embodiment of the present invention.
The meaning of the individual reference numerals in the figures is as follows:
101 is a self-expanding electrode, 102 is a rotating component, 1021 is a mounting base, 1022 is a rotating sleeve, 1023 is a buckle, 103 is a catheter, 104 is a handle, 105 is a traction wire, 106 is a control wire, and 107 is a guide.
Detailed Description
The core of the invention is to provide a natural cavity ablation electrode, so that the expansion and contraction of the electrode can be completed on the premise of not depending on an air pump device.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the embodiment of the invention discloses a natural orifice ablation electrode, which is different from the conventional balloon electrode, and can complete the expansion and contraction of the electrode without depending on an air pump device.
The natural orifice ablation electrode comprises a catheter 103, a self-expanding electrode 101, a rotating assembly 102, a driving device and a control pull wire 106. The first end of the catheter 103 is provided with a handle 104, and the first side of the self-expanding electrode 101 is fixed to the second end of the catheter 103 and is curled around the catheter 103, and the self-expanding electrode 101 expands radially to the catheter 103 in a natural state. The self-expanding electrode 101 may be an FPC (Flexible Printed Circuit, flexible circuit board) electrode, an FFC (Flexible Flat Cable ) electrode, or a non-metallic material coated electrode, so long as it has certain elasticity and can generate self-expanding effect.
Taking FPC as an example, FPC is a printed circuit board made of polyimide or polyester film as a base material, and has high wiring density, light weight, thin thickness and good flexibility. In order to allow the self-expanding electrode 101 to expand radially, i.e., to expand to the outside, of the guide tube 103 in a natural state, i.e., without a force, the self-expanding electrode 101 is required to have a certain elasticity, and thus the base material of the FPC cannot be too thin, and it is required to have a certain thickness to ensure its elasticity of self-expansion.
The rotating assembly 102 is disposed on the conduit 103, and the driving device is used for driving the rotating assembly 102 to rotate. It should be noted that there are many schemes for driving the rotating assembly 102, for example, the rotating assembly 102 may be extended toward the handle 104, and a driving device (such as a rotating handle) may be disposed near the handle 104, and the rotating assembly 102 may be driven to rotate by rotating the rotating handle. A transmission part can be arranged in the catheter 103, a driving device is arranged at the handle 104, the driving device transmits the rotation force to the rotating assembly 102 through the transmission part to drive the rotating assembly 102 to rotate, and the rotating assembly 102 can be driven by a stay wire mode, and a stay wire driving scheme is described in detail below. Those skilled in the art will understand that, as long as the scheme of driving the rotating assembly 102 to rotate is satisfied, the design requirement of the driving device is not limited by the specific structure of the driving device.
For ease of understanding, the control wire 106 is divided into two parts, a control winding part and a control pulling part, according to the positions. Wherein, the control winding part is wound on the rotating component 102, and the control pulling part is not wound on the rotating component 102 and is connected with the second side of the self-expanding electrode 101. When the rotating assembly 102 rotates in the first direction, the control wire 106 pulls the self-expanding electrode 101 to contract.
For example, when the rotating assembly 102 rotates clockwise, more part of the control wire 106 is wound around the rotating assembly 102, that is, the total length of the control wire winding part is longer, the length of the corresponding control pulling part is shorter, and the length of the control pulling part is equivalent to the distance from the outer surface of the self-expanding electrode 101 to the rotating assembly 102, and as the length of the control pulling part is shorter, the distance from the outer surface of the self-expanding electrode 101 to the catheter 103 is shorter, the self-expanding electrode 101 is contracted, so that the self-expanding electrode 101 can move freely in the natural cavity of the human body to be delivered to the lesion.
When the rotating assembly 102 rotates anticlockwise, part of the pull wire of the control pull wire 106 is released by the rotating assembly 102, namely the total length of the control winding part is shortened, the length of the corresponding control pulling part is lengthened, the length of the control pulling part is equivalent to the distance from the outer surface of the self-expanding electrode 101 to the rotating assembly 102, the constraint effect of the control pulling part on the self-expanding electrode 101 is relieved along with the length lengthening of the control pulling part, the self-expanding electrode 101 expands outwards under the action of self elasticity, so that the self-expanding electrode 101 can be attached to a lesion part of a natural cavity channel, and ablation treatment is carried out.
The contraction and expansion state of the self-expanding electrode 101 will also change under the influence of the control wire 106, and at this time, the degree of expansion or contraction of the self-expanding electrode 101 can be controlled by changing the length of the control wire winding part of the control wire 106, so that the self-expanding electrode can adapt to human body cavities with different sizes.
It should be noted that, the first direction of the rotating assembly 102 is clockwise, and only for the sake of example for facilitating understanding of the scheme, the first direction may be set to be counterclockwise, and the present embodiment may rotate the rotating assembly 102 in which direction, so that the self-expanding electrode 101 may be contracted or expanded without limitation.
In summary, the natural orifice ablation electrode disclosed in the embodiments of the present invention is curled and wound with the self-expanding electrode 101 on the catheter 103, and the self-expanding electrode 101 has a certain elasticity, that is, it expands radially to the catheter 103 in a natural state without external force. The catheter 103 is further provided with a rotating assembly 102, a control winding part of the control stay wire 106 is wound around the rotating assembly 102, a control pulling part of the control stay wire 106 is not wound around the rotating assembly 102, the control pulling part is connected with the second side edge of the self-expanding electrode 101, the length of the control winding part and the control pulling part can be changed by rotating the rotating assembly 102, the outer diameter of the self-expanding electrode 101 is reduced when the length of the control pulling part is shortened, namely, the self-expanding electrode 101 is in a contracted state, and the outer diameter of the self-expanding electrode 101 is increased when the length of the control pulling part is prolonged, namely, the self-expanding electrode 101 is in an expanded state. The invention can control the motion of the self-expanding electrode 101 by driving the rotation component 102 to rotate, can control the expansion and contraction of the self-expanding electrode 101 by changing the rotation direction of the rotation component 102, has simple and convenient operation, and can complete the expansion and contraction of the electrode without depending on other air pump devices or liquid injection devices.
In one embodiment of the present invention, the first direction in which the rotating assembly 102 rotates is the same as the crimping direction of the self-expanding electrode 101 about the catheter 103. Taking the first direction as the clockwise direction as an example, after the first side edge of the self-expanding electrode 101 is fixed on the catheter 103, the self-expanding electrode is wound on the catheter 103 in the clockwise direction, so that the outer diameter of the self-expanding electrode 101 can be ensured to be larger than the outer diameter of the natural cavity in the self-expanding state. The self-expanding electrode 101 may be wrapped around the catheter 103 multiple times to achieve a better fit with the natural lumen. In this embodiment, the first direction of rotation of the rotating component 102 is designed to be the same as the curling direction of the self-expanding electrode 101 around the catheter 103, so that when the rotating component 102 is rotated in the first direction, the pulling part is controlled to pull the second side edge of the self-expanding electrode 101 in a pulling manner, so that the self-expanding electrode 101 continues to wind around the catheter 103, and then the winding number of the self-expanding electrode 101 is increased, so as to achieve the effect of shrinkage.
The control pull portion of the control wire 106 shortens in length as the rotating assembly 102 rotates in the first direction. Accordingly, when the rotating assembly 102 rotates in the second direction (opposite to the first direction), the length of the control pull portion of the control wire 106 increases.
In order to ensure that the control pull wire 106 can achieve a better pulling effect on the self-expanding electrode 101, the control pull part of the control pull wire 106 is prevented from forming an overlarge angle with the end face of the FPC electrode 101 after being tensioned, so that the pulling force on the self-expanding electrode 101 is prevented from being influenced. In one embodiment of the present invention, the rotating assembly 102 is attached to the self-expanding electrode 101 on the side near the handle 104. The rotating assembly 102 is arranged adjacent to the self-expanding electrode 101, so that the control pulling part of the control pulling wire 106 is basically attached to the end face of the self-expanding electrode 101 and is in a state of being approximately parallel to the end face of the self-expanding electrode 101, therefore, the pulling force acting on the second side edge of the self-expanding electrode 101 is approximately in the radial direction of the self-expanding electrode 101, the length change of the control pulling part can be controlled to be more responsive to the change of the outer diameter of the self-expanding electrode 101, the control efficiency is improved, the second side edge of the self-expanding electrode 101 is not pulled in other directions, and the self-expanding electrode 101 is prevented from being separated from the set position under the action of the pulling force.
As shown in fig. 2, in the present embodiment, the rotation assembly 102 includes a mounting base 1021 and a rotation sleeve 1022. The mounting base 1021 is fixedly sleeved on the catheter 103, and specifically, the relative fixation of the mounting base 1021 and the catheter 103 can be realized by an adhesive manner, however, other manners can be adopted as long as the movement of the mounting base 1021 along the catheter 103 can be limited.
The rotating sleeve 1022 is rotatably sleeved on the mounting base 1021, the rotating sleeve 1022 can rotate relative to the axis of the mounting base 1021, and the rotating sleeve 1022 needs to be limited on the mounting base 1021 to prevent falling off from the mounting base 1021. The control wire 106 is wound around the rotating sleeve 1022, and the number of windings of the control wire 106 around the rotating sleeve 1022 is changed by the rotation of the rotating sleeve 1022, which in turn changes the length of the control pull.
Further, since the end of the mounting base 1021 away from the self-expanding electrode 101 is formed with the first limit rib, and the outer diameter of the first limit rib is significantly larger than the outer diameter of the catheter 103, in order to reduce the shearing force therebetween, a tapered transition portion may be disposed on the side of the first limit rib away from the self-expanding electrode 101, and the outer diameter of the tapered transition portion gradually decreases from the direction close to the first limit rib to the direction away from the first limit rib until the tapered transition portion is the same as or similar to the outer diameter of the catheter 103.
As shown in fig. 3, the mounting base 1021 has a buckle 1023 at an end near the self-expanding electrode 101, and the buckle 1023 passes through the center hole of the rotating sleeve 1022 and is engaged with the end face of the rotating sleeve 1022. The rotating sleeve 1022 is sleeved outside the mounting base 1021, one end of the rotating sleeve 1022 is limited by the first limiting flange, the other end of the rotating sleeve 1022 is limited by the buckle 1023, so that the rotating sleeve 1022 is limited on the mounting base 1021 in the axial direction, but the rotating sleeve 1022 can rotate around the axis of the mounting base 1021.
In order to ensure that the snap 1023 can be compressed and restored so that the snap 1023 can pass through the center hole of the rotating sleeve 1022 by compressing the snap 1023, after passing through the center hole of the rotating sleeve 1022, can be restored and snapped onto the end surface of the rotating sleeve 1022, so that a certain elasticity of the snap 1023 is required. In this embodiment, the mounting base 1021 is close to one end of the self-expanding electrode 101, and a plurality of separation slits are formed along the circumferential direction to form a plurality of elastic arms, the elastic arms are similar to a cantilever structure, and two adjacent elastic arms are separated by the separation slits, and the elastic arms have elasticity due to the separation slits. The end of each spring arm near the self-expanding electrode 101 is provided with a catch 1023. The buckles 1023 are arranged on the elastic arms, so that when the elastic arms are subjected to centripetal force, each elastic arm deforms towards the center direction until entering the center hole of the rotating sleeve 1022, after moving out of the center hole of the rotating sleeve 1022, each elastic arm releases the restraint of the rotating sleeve 1022, and the elastic arms return to the initial state, so that the buckles 1023 at the end parts of the elastic arms are clamped on the end face of the rotating sleeve 1022.
In order to facilitate the smooth insertion of the elastic arm into the central hole of the rotating sleeve 1022, the thickness of the buckle 1023 gradually decreases from the direction close to the first limit flange to the direction far away from the first limit flange, so that the buckle 1023 has a guiding inclined plane to facilitate the insertion into the central hole of the rotating sleeve 1022.
The end of the rotating sleeve 1022 adjacent to the self-expanding electrode 101 is formed with a second limit stop. The control wire 106 is wound between the first limit stop and the second limit stop to prevent the control wire 106 wound on the rotating sleeve 1022 from falling off from the rotating sleeve 1022 to affect the use when the rotating sleeve 1022 rotates. To further constrain the position of the control winding on the outer surface of the rotating assembly 102, a spiral groove for accommodating the control winding may be provided on the outer surface of the rotating assembly 102, and the control wire 106 is wound along the direction of the spiral groove when wound on the rotating assembly 102, so as to prevent the control winding from being mutually extruded and not being effectively unfolded.
The driving means may be a traction wire 105, the traction wire 105 comprising a traction wire winding portion wound on the rotating assembly 102, and a traction portion extending to the handle 104 and not wound on the rotating assembly 102. By pulling the traction portion of the traction wire 105, the length of the traction wire winding portion can be shortened, and the rotation sleeve 1022 can be driven to rotate, so as to control the contraction of the self-expanding electrode 101.
When the traction wire 105 is released, the self-expanding electrode 101 is reset to an expanded state under the elastic action, and then the rotating sleeve 1022 is driven to rotate reversely, so that the traction wire 105 is continuously wound on the rotating sleeve 1022, the length of the traction winding part is prolonged, and the self-expanding electrode 101 can be controlled to shrink by continuously pulling the traction pulling part of the traction wire 105. Thus, in this embodiment, the outer diameter of the self-expanding electrode 101 can be controlled by pulling and releasing the pull wire 105, which in turn controls the force of the natural orifice fitting.
Specifically, the winding direction of the traction winding part is the same as that of the traction control part, and the control stay wire 106 and the traction stay wire 105 may be the same stay wire or two independent stay wires. To prevent external effects on the pull wire 105, the pull portion of the pull wire 105 may be hidden within the catheter 103, and specifically, a hole may be formed in the catheter 103 through which the pull wire 105 may extend into the catheter 103.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
As used in the specification and in the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not preclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. A natural orifice ablation electrode, comprising:
A catheter (103), a first end of the catheter (103) being provided with a handle (104);
A self-expanding electrode (101) having a first side fixed to a second end of the catheter (103) and being curled around the catheter (103), the self-expanding electrode (101) expanding in a radial direction of the catheter (103) in a natural state;
a rotating assembly (102) arranged on the conduit (103);
The driving device is used for driving the rotating assembly (102) to rotate;
a control wire (106), the control wire (106) comprising a control winding portion wound on the rotating assembly (102) and a control pulling portion connected to the second side of the self-expanding electrode (101) and not wound on the rotating assembly (102);
the first direction of rotation of the rotation assembly (102) is the same as the curling direction of the self-expanding electrode (101) around the catheter (103), and when the rotation assembly (102) rotates along the first direction, the control pull wire (106) pulls the self-expanding electrode (101) to shrink;
When the rotating assembly (102) rotates along the first direction, the length of the control pulling part of the control pull wire (106) is shortened.
2. The natural orifice ablation electrode of claim 1, wherein the rotating assembly (102) is disposed adjacent to a side of the handle (104) of the self-expanding electrode (101).
3. The natural orifice ablation electrode of claim 1 or 2, wherein the rotating assembly (102) comprises:
The mounting base (1021) is fixedly sleeved on the guide pipe (103);
And the rotating sleeve (1022) is rotatably sleeved on the mounting base (1021), and the control pull wire (106) is wound on the rotating sleeve (1022).
4. A natural orifice ablation electrode according to claim 3, characterized in that a first limit stop is formed at the end of the mounting base (1021) remote from the self-expanding electrode (101), a buckle (1023) is provided at the end of the mounting base (1021) close to the self-expanding electrode (101), and the buckle (1023) passes through the central hole of the rotating sleeve (1022) and is clamped on the end face of the rotating sleeve (1022).
5. The natural orifice ablation electrode of claim 4, wherein the mounting base (1021) is provided with a plurality of separation slits in a circumferential direction near one end of the self-expanding electrode (101) to form a plurality of elastic arms, and one end of each elastic arm near the self-expanding electrode (101) is provided with the buckle (1023).
6. The natural orifice ablation electrode of claim 4, wherein a second limit stop is formed at an end of the rotating sleeve (1022) adjacent to the self-expanding electrode (101).
7. The natural orifice ablation electrode of claim 1 or2, wherein the drive means is a traction wire (105), the traction wire (105) comprising a traction wrap wound around the rotating assembly (102) and a traction pull extending to the handle (104) and not wound around the rotating assembly (102).
8. The natural orifice ablation electrode of claim 7, wherein the pull wire winding portion is wound in the same direction as the control pull portion.
9. The natural orifice ablation electrode of claim 7, wherein the control wire (106) and the traction wire (105) are the same wire.
10. The natural orifice ablation electrode of claim 7, wherein an outer surface of the rotating assembly (102) is provided with a spiral wire slot for receiving the control wire wrap; and/or the number of the groups of groups,
The traction and pulling part is hidden in the catheter (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311236100.XA CN117159130B (en) | 2023-09-22 | 2023-09-22 | Natural cavity ablation electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311236100.XA CN117159130B (en) | 2023-09-22 | 2023-09-22 | Natural cavity ablation electrode |
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| Publication Number | Publication Date |
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| CN117159130A CN117159130A (en) | 2023-12-05 |
| CN117159130B true CN117159130B (en) | 2024-09-06 |
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| CN202311236100.XA Active CN117159130B (en) | 2023-09-22 | 2023-09-22 | Natural cavity ablation electrode |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546118A (en) * | 2013-10-25 | 2015-04-29 | 柯惠有限合伙公司 | Unfurling electrode devices with the multiple longitudinal electrode segments |
| CN111588970A (en) * | 2020-05-29 | 2020-08-28 | 成都赛拉诺医疗科技有限公司 | Balloon dilatation device and manufacturing method thereof |
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| CN111588970A (en) * | 2020-05-29 | 2020-08-28 | 成都赛拉诺医疗科技有限公司 | Balloon dilatation device and manufacturing method thereof |
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