Inverted V-shaped ablation catheter applied to special part of heart

Abstract

The utility model provides an inverted-V-shaped ablation catheter applied to a special part of a heart, and relates to the technical field of medical instruments. The inverted-V-shaped ablation catheter applied to the special part of the heart comprises a handle and a catheter body arranged on the handle, and the end, away from the handle, of the catheter body is a bent section; a first pull wire is arranged in the guide pipe, one end of the first pull wire is connected with the bent section, and the other end of the first pull wire penetrates through the handle; a second pull wire is arranged in the catheter, the bent section is provided with a bent part, a connecting point and a sliding hole, the connecting point is located between the bent part and the free end of the bent section, and the sliding hole is located between the bent part and the handle; one end of the second pull wire penetrates out of the sliding hole and is connected with the connecting point, and the other end of the second pull wire penetrates through the handle. According to the utility model, the head end of the ablation catheter can be bent into an inverted V shape, so that the head end of the ablation catheter can conveniently reach a special ablation target spot part, the arrival rate is improved, and the ablation operation effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly to an inverted V-shaped ablation catheter applied to special parts of the heart. Background Art

[0002] Arrhythmia diseases are one of the most common heart diseases, and radiofrequency ablation interventional surgery is an effective means for treating arrhythmia diseases. In arrhythmia interventional surgery, due to the relationship of cardiac anatomy, ablation targets at some special parts are difficult to reach with current ablation catheters, which affects the treatment success rate of such heart diseases. For example, for premature ventricular contractions or ventricular tachycardia originating from above the pulmonary valve (sinus), although some patients can be ablated through the "inverted U" operation of the current ablation catheter, due to the curvature limitation of the current catheter, the bending radius of the tip of the conventional ablation catheter is too large after being bent into an "inverted U" shape, and the ventricular outflow tract of some patients is too small, so the probability that the tip of the ablation catheter can accurately reach the position is not high. In addition, for premature ventricular contractions originating from the right ventricular septum, due to the obstruction of the valve, it is also difficult to reach the position, affecting the surgical effect. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an inverted V-shaped ablation catheter applied to special parts of the heart, which can propose a solution for the deficiencies of the prior art. It can bend the tip of the ablation catheter into an inverted V shape, facilitating the tip of the ablation catheter to reach the special ablation target site, improving the reaching rate, and further improving the ablation surgical effect.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The embodiment of the present application provides an inverted V-shaped ablation catheter applied to special parts of the heart, including a handle and a catheter provided on the handle. One end of the catheter away from the handle is a bending section; a first pull wire is arranged inside the catheter, one end of the first pull wire is connected to the bending section, and the other end of the first pull wire passes through the handle; a second pull wire is arranged inside the catheter, the bending section is provided with a bending part, the bending section is provided with a connection point and a sliding hole, the connection point is located between the bending part and the free end of the bending section, and the sliding hole is located between the bending part and the handle; one end of the second pull wire passes through the sliding hole and is connected to the connection point, and the other end of the second pull wire passes through the handle.

[0006] Further, in some embodiments of the utility model, a reset elastic member is arranged on the inner side wall of the bending section at the position of the bending part.

[0007] Further, in some embodiments of the utility model, a wear-resistant ring is arranged at the position of the sliding hole on the bending section, and the second pull wire passes through the wear-resistant ring.

[0008] Further, in some embodiments of the present utility model, an adjusting sliding sleeve is slidably sleeved on the outer side wall of the handle, and one end of the first cable remote from the bending section is connected to the adjusting sliding sleeve.

[0009] Further, in some embodiments of the present utility model, a strip-shaped operation hole is provided on the side wall of the handle, an adjusting dial block is slidably provided on the outer side wall of the handle, and the width of the adjusting dial block is greater than the width of the operation hole; one end of the second cable remote from the bending section passes through the operation hole and is connected to the adjusting dial block.

[0010] Further, in some embodiments of the present utility model, an anti-slip pattern is provided on the outer side of the adjusting dial block.

[0011] Compared with the prior art, the embodiments of the present utility model at least have the following advantages or beneficial effects:

[0012] The embodiments of the present utility model provide an "inverted V"-shaped ablation catheter applied to special parts of the heart, including a handle and a catheter provided on the handle. One end of the catheter remote from the handle is a bending section; a first cable is provided in the catheter, one end of the first cable is connected to the bending section, and the other end of the first cable passes through the handle; a second cable is provided in the catheter, the bending section is provided with a bending part, the bending section is provided with a connection point and a sliding hole, the connection point is located between the bending part and the free end of the bending section, and the sliding hole is located between the bending part and the handle; one end of the second cable passes out of the sliding hole and is connected to the connection point, and the other end of the second cable passes through the handle. It can bend the head end of the ablation catheter into an "inverted V" shape, which is convenient for the head end of the ablation catheter to reach the special ablation target site, improves the reaching rate, and further improves the ablation operation effect. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0014] Figure 1 It is the front view of the ablation catheter provided by the embodiment of the present utility model;

[0015] Figure 2 It is the partial cross-sectional view of the ablation catheter provided by the embodiment of the present utility model;

[0016] Figure 3 It is the partial cross-sectional view of the position of the bending section provided by the embodiment of the present utility model;

[0017] Figure 4 It is Figure 3 The enlarged view of A in

[0018] Figure 5 This is a partial cross-sectional view of the handle position provided by the embodiment of the present utility model.

[0019] Icon: 1 - handle; 2 - catheter; 3 - bending section; 4 - first wire; 5 - second wire; 6 - bending part; 7 - sliding hole; 8 - connection point; 9 - reset elastic member; 10 - wear-resistant ring; 11 - adjusting sliding sleeve; 12 - operation hole; 13 - adjusting block. Specific embodiments

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the embodiments of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is normally placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0024] In addition, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if the terms "arrangement" and "connection" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment

[0027] Please refer to Figures 1 - 5 , this embodiment provides an "inverted V" - shaped ablation catheter applied to a special part of the heart, including a handle 1 and a catheter 2 provided on the handle 1. One end of the catheter 2 away from the handle 1 is a bent section 3; a first pull wire 4 is arranged inside the catheter 2. One end of the first pull wire 4 is connected to the bent section 3, and the other end of the first pull wire 4 passes through the handle 1; the catheter 2, the handle 1, and the first pull wire 4 form an existing ablation catheter. An electrode is provided on the bent section 3 of the catheter 2, and the bent section 3 of the catheter 2 is used to be bent into an "inverted U" shape under the traction of the first pull wire 4.

[0028] A second pull wire 5 is arranged inside the catheter 2. The bent section 3 is provided with a bent portion 6, a connection point 8 and a sliding hole 7 are provided on the bent section 3. The connection point 8 is located between the bent portion 6 and the free end of the bent section 3, and the sliding hole 7 is located between the bent portion 6 and the handle 1; one end of the second pull wire 5 passes out of the sliding hole 7 and is connected to the connection point 8, and the other end of the second pull wire 5 passes through the handle 1. The second pull wire 5 is used to pull the bent section 3 so that the bent section 3 is bent into an "inverted V" shape.

[0029] A reset elastic member 9 is provided on the inner side wall of the bent section 3 at the position of the bent portion 6. The reset elastic member 9 can be an elastic metal sheet, a torsion spring, etc. The reset elastic member 9 is used to make the bent portion 6 rotate and reset under the elastic action.

[0030] During actual use, before pulling the first pull wire 4 and the second pull wire 5, the reset elastic member 9 of the bent portion 6 keeps the bent section 3 generally in a straight line under its own elastic force. At this time, the catheter 2 as a whole is generally in a straight line, and the catheter 2 enters a sufficient position above the pulmonary valve in the forward direction. When it is necessary to bend the bent section 3 into an "inverted U" shape, the medical staff only needs to pull the first pull wire 4, and the bent section 3 of the catheter 2 is bent into an "inverted U" shape under the traction of the first pull wire 4. When it is necessary to bend the bent section 3 into an "inverted V" shape along the bent portion 6, at this time, the medical staff needs to pull the second pull wire 5, as Figure 1 and Figure 2As shown, under the pulling of the second pull wire 5, the bending part 6 gradually bends so that the bending section 3 is generally bent into an inverted "V" shape, which is convenient for the ablation catheter head to reach the special ablation target site, improves the reaching rate, and further improves the ablation operation effect. While the bending section 3 is bent into an inverted "V" shape, the reset elastic member 9 is bent simultaneously to store elastic potential energy. After the operation is completed, the second pull wire 5 is relaxed. At this time, under the elastic force of the reset elastic member 9, the reset elastic member 9 can be deformed and reset, and at this time, the reset elastic member 9 drives the bending section 3 to be deformed and reset along the bending part 6. At the same time, the first pull wire 4 is relaxed, so that it is convenient to pull out the catheter 2 outward.

[0031] As Figure 4 shown, in some embodiments of the present invention, a wear-resistant ring 10 is provided at the bending section 3 and at the sliding hole 7, and the second pull wire 5 passes through the wear-resistant ring 10. The wear-resistant ring 10 can be a metal ring, so that it is convenient for the second pull wire 5 to slide along the wear-resistant ring 10, and it can also prevent the second pull wire 5 from causing frictional loss to the bending section 3 during the sliding process.

[0032] As Figures 1 - 2 shown, in some embodiments of the present invention, an adjusting sliding sleeve 11 is slidably sleeved on the outer side wall of the handle 1, and one end of the first pull wire 4 far from the bending section 3 is connected to the adjusting sliding sleeve 11.

[0033] By setting the adjusting sliding sleeve 11 in the present invention, medical staff can hold the handle 1 and slide the adjusting sliding sleeve 11 to make the adjusting sliding sleeve 11 pull the first pull wire 4 to move so that the bending section 3 bends, which is convenient to operate.

[0034] As Figures 1 - 2 shown, in some embodiments of the present invention, a strip-shaped operation hole 12 is provided on the side wall of the handle 1, an adjusting dial block 13 is slidably provided on the outer side wall of the handle 1, and the width of the adjusting dial block 13 is greater than the width of the operation hole 12; one end of the second pull wire 5 far from the bending section 3 passes through the operation hole 12 and is connected to the adjusting dial block 13. The outer side of the adjusting dial block 13 is provided with anti-slip lines.

[0035] By setting the adjusting dial block 13 in the present invention, medical staff can hold the handle 1 and slide the adjusting dial block 13 to make the adjusting dial block 13 pull the second pull wire 5 to move so that the bending section 3 is bent into an inverted "V" shape, which is convenient to operate.

[0036] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application.

[0037] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present application is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. For those skilled in the art, the utility model can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An "inverted V" ablation catheter applied to a special part of the heart, comprising a handle and a catheter provided on the handle. One end of the catheter away from the handle is a bending section. A first wire is provided inside the catheter. One end of the first wire is connected to the bending section, and the other end of the first wire passes through the handle. It is characterized in that: A second wire is provided inside the catheter. The bending section is provided with a bending portion, a connection point and a sliding hole. The connection point is located between the bending portion and the free end of the bending section. The sliding hole is located between the bending portion and the handle. One end of the second wire passes out of the sliding hole and is connected to the connection point, and the other end of the second wire passes through the handle.

2. The "inverted V" ablation catheter applied to a special part of the heart according to claim 1, characterized in that: A reset elastic member is provided on the inner side wall of the bending section at the position of the bending portion.

3. The "inverted V" ablation catheter applied to a special part of the heart according to claim 1, characterized in that: A wear-resistant ring is provided at the sliding hole of the bending section, and the second wire passes through the wear-resistant ring.

4. The "inverted V" ablation catheter applied to a special part of the heart according to claim 1, wherein: An adjusting sliding sleeve is slidably sleeved on the outer side wall of the handle, and one end of the first wire away from the bending section is connected to the adjusting sliding sleeve.

5. A "reverse V"-shaped ablation catheter applied to a special part of the heart according to claim 1, characterized in that: A strip-shaped operation hole is provided on the side wall of the handle, and an adjusting dial block is slidably provided on the outer side wall of the handle. The width of the adjusting dial block is greater than the width of the operation hole. One end of the second wire away from the bending section passes through the operation hole and is connected to the adjusting dial block.

6. The "inverted V" ablation catheter applied to special parts of the heart according to claim 5, characterized in that: The outer side of the adjusting dial block is provided with anti-slip lines.

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