Three-dimensional visual intracardiac catheter sheath group and three-dimensional visual intracardiac catheter sheath system

Abstract

The invention provides a three-dimensional visual intracardiac catheter sheath group and a three-dimensional visual intracardiac catheter sheath system. The three-dimensional visual intracardiac catheter sheath group comprises an outer sheath tube, a tail line interface, a functional part, a functional part connecting line correspondingly connected with the functional part, at least two ring electrodes and ring electrode connecting lines correspondingly connected with the ring electrodes one by one, the tail line interface is used for being connected with a three-dimensional mapping device; the outer sheath tube comprises a sheath base, a main body section and a bent section which are sequentially connected from the near end to the far end, and the at least two ring electrodes are arranged on the bent section at intervals; all the ring electrode connecting lines are gathered and connected to the tail line interface; the functional part is separably arranged on the outer sheath tube in a penetrating manner, and the far end of the functional part can extend out of the far end of the bent section; and the near end of the functional part extends out of the near end of the outer sheath tube and is separably connected to the tail line interface through the functional part connecting line.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a three-dimensional visualization intracardiac catheter sheath set and a three-dimensional visualization intracardiac catheter sheath system. Background Art

[0002] In the prior art, a three-dimensional visualization can be achieved by a ring electrode at the distal end of an intracardiac catheter sheath, but it can only reflect the position of the intracardiac catheter sheath itself. During the atrial septum puncture process, the functional components that play a role and pose the highest risk of harm to the patient are the functional components, such as the puncture needle used for performing the puncture. Therefore, only knowing the position of the intracardiac catheter sheath itself is not sufficient to fully evaluate the safety and effectiveness of the entire puncture system. Summary of the Invention

[0003] The purpose of the present invention is to provide a three-dimensional visualization intracardiac catheter sheath set and a three-dimensional visualization intracardiac catheter sheath system to solve the problem that it is difficult to know the position of the functional components of the existing intracardiac catheter sheath.

[0004] To solve the above technical problems, the present invention provides a three-dimensional visualization intracardiac catheter sheath set, which includes: an outer sheath tube, a tail wire interface, a functional component, a functional component connection wire corresponding to and connected to the functional component, at least two ring electrodes, and a ring electrode connection wire corresponding to and connected to each ring electrode; the tail wire interface is used to connect to a three-dimensional mapping device;

[0005] The outer sheath tube includes a sheath seat, a main body section, and a bending section that are sequentially connected from the proximal end to the distal end, and at least two of the ring electrodes are spaced apart and arranged on the bending section; all the ring electrode connection wires are gathered and connected to the tail wire interface;

[0006] The functional component is detachably inserted through the outer sheath tube, and the distal end of the functional component can extend out from the distal end of the bending section; the proximal end of the functional component extends out of the proximal end of the outer sheath tube and is detachably connected to the tail wire interface through the functional component connection wire.

[0007] Optionally, the ring electrode connection wire is arranged in the tube wall of the outer sheath tube.

[0008] Optionally, the tube wall of the outer sheath tube includes at least two layers of structures, and the ring electrode connection wire is arranged between the at least two layers of structures.

[0009] Optionally, the three-dimensional visualization intracardiac catheter sheath set further includes a connection interface for connecting the functional component connection wire; the connection interface is arranged on the sheath seat; the tail wire interface includes a first connection end and a second connection end, wherein the first connection end is electrically connected to the connection interface inside the sheath seat; all the ring electrode connection wires are gathered and connected to the second connection end.

[0010] Optionally, the functional component includes a dilator and a puncture needle;

[0011] The dilator is movably disposed through the outer sheath tube, and a distal end of the dilator can extend out from a distal end of the bending section; the dilator has a lumen axially penetrating through itself, the puncture needle is movably disposed through the lumen, and a distal end of the puncture needle can extend out from the distal end of the dilator;

[0012] A proximal end of the puncture needle is detachably connected to the connection interface through the functional component connection line.

[0013] Optionally, one end of the functional component connection line away from the connection with the connection interface has a chuck; the puncture needle has a needle seat, and the needle seat extends out of a proximal end of the dilator; the chuck is detachably connected to the needle seat.

[0014] Optionally, the number of the annular electrodes is 2 to 3.

[0015] Optionally, the three-dimensional visualization intracardiac catheter sheath group further includes a side branch and a three-way valve; the side branch and the three-way valve are disposed on the sheath base.

[0016] To solve the above technical problems, the present invention further provides a three-dimensional visualization intracardiac catheter sheath system, which includes the three-dimensional visualization intracardiac catheter sheath group as described above, and further includes a three-dimensional mapping device; the three-dimensional mapping device is configured to fit the bending shape of the bending section and the extending distance of the functional component relative to the outer sheath tube according to the position information of at least two of the annular electrodes and the position information of the functional component.

[0017] Optionally, the three-dimensional visualization intracardiac catheter sheath system further includes a display device, and the display device is connected to the three-dimensional mapping device for displaying the bending shape of the distal end of the outer sheath tube and the extending distance of the functional component relative to the outer sheath tube fitted by the three-dimensional mapping device.

[0018] In summary, in the three-dimensional visualization intracardiac catheter sheath set and the three-dimensional visualization intracardiac catheter sheath system provided by the present invention, the three-dimensional visualization intracardiac catheter sheath set includes: an outer sheath tube, a tail wire interface, a functional component, a functional component connecting wire corresponding to and connected to the functional component, at least two annular electrodes, and an annular electrode connecting wire corresponding to and connected to each annular electrode; the tail wire interface is used to connect to a three-dimensional mapping device; the outer sheath tube includes a sheath base, a main body section, and a bending section connected in sequence from the proximal end to the distal end, and at least two of the annular electrodes are spaced apart and arranged on the bending section; all the annular electrode connecting wires are gathered and connected to the tail wire interface; the functional component is detachably inserted into the outer sheath tube, and the distal end of the functional component can extend out from the distal end of the bending section; the proximal end of the functional component extends out of the proximal end of the outer sheath tube and is detachably connected to the tail wire interface through the functional component connecting wire.

[0019] With such a configuration, the annular electrodes are gathered and connected to the tail wire interface through the annular electrode connecting wires, and at the same time, the functional component is also connected to the tail wire interface through the functional component connecting wire, so that the three-dimensional mapping device connected to the tail wire interface can obtain the position information of the annular electrodes and the position information of the functional component together, thereby not only being able to know the bending shape of the distal part of the outer sheath tube, but also being able to know the extension distance of the functional component relative to the outer sheath tube, improving the guiding value for atrial septum puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Those of ordinary skill in the art will understand that the provided drawings are used to better understand the present invention and do not constitute any limitation to the scope of the present invention. Among them:

[0021] Figure 1 is a schematic diagram of the three-dimensional visualization intracardiac catheter sheath set according to an embodiment of the present invention;

[0022] Figure 2 is a partially enlarged schematic diagram of the three-dimensional visualization intracardiac catheter sheath set according to an embodiment of the present invention.

[0023] In the drawings:

[0024] 10 - outer sheath tube; 11 - sheath base; 12 - main body section; 13 - bending section; 14 - structure; 20 - tail wire interface; 21 - first connection end; 22 - second connection end; 23 - extension section; 24 - wire cluster; 30 - functional component; 31 - dilator; 32 - puncture needle; 321 - needle tip; 322 - needle seat; 40 - functional component connecting wire; 41 - chuck; 50 - annular electrode; 60 - annular electrode connecting wire; 70 - connection interface; 81 - side branch; 82 - three-way valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, advantages and features of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in a very simplified form and not drawn to scale, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present invention. In addition, the structures shown in the accompanying drawings are often part of the actual structures. In particular, the accompanying drawings need to show different emphases and sometimes use different scales.

[0026] As used in the present invention, the singular forms "a", "an", "one" and "the" include plural referents, the term "or" is generally used in the sense of including "and / or", the term "several" is generally used in the sense of including "at least one", the term "at least two" is generally used in the sense of including "two or more", in addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. "One end" and "the other end", as well as "proximal end" and "distal end" generally refer to two corresponding parts, which include not only the endpoints. The terms "proximal end" and "distal end" are defined herein with respect to a three-dimensional visualizable intracardiac catheter sheath set having one end for intervening in the human body and a manipulation end extending out of the body. The term "proximal end" refers to a position closer to the manipulation end of the three-dimensional visualizable intracardiac catheter sheath set extending out of the body, and the term "distal end" refers to a position closer to the end of the three-dimensional visualizable intracardiac catheter sheath set intervening in the human body and thus farther from the manipulation end of the three-dimensional visualizable intracardiac catheter sheath set. Optionally, in an application scenario of manual or hand operation, the terms "proximal end" and "distal end" are defined herein with respect to an operator such as a surgeon or a clinician. The term "proximal end" refers to a position closer to the operator, and the term "distal end" refers to a position closer to the three-dimensional visualizable intracardiac catheter sheath set and thus farther from the operator. In addition, as used in the present invention, "mounted", "connected", "coupled", an element "disposed" on another element should be understood in a broad sense, generally only indicating that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the two elements can be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate element, and cannot be construed as indicating or implying the spatial position relationship between the two elements, that is, an element can be in any position such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, directional terms such as above, below, up, down, upward, downward, left, right, etc. are used with respect to an exemplary embodiment as shown in the figures, with the upward or upward direction towards the top of the corresponding figure and the downward or downward direction towards the bottom of the corresponding figure.

[0027] The object of the present invention is to provide a three-dimensional visualizable intracardiac catheter sheath set and a three-dimensional visualizable intracardiac catheter sheath system to solve the problem that it is difficult to know the position of functional components in existing intracardiac catheter sheaths. The following description refers to the accompanying drawings.

[0028] Please refer to Figure 1 and Figure 2, an embodiment of the present invention provides a three-dimensional visual intracardiac catheter sheath set, which includes: an outer sheath tube 10, a tail wire interface 20, a functional component 30, a functional component connection wire 40 corresponding to and connected to the functional component 30, at least two annular electrodes 50, and an annular electrode connection wire 60 corresponding to and connected to each of the annular electrodes 50; the tail wire interface 20 is used to connect to a three-dimensional mapping device (not shown); the outer sheath tube 10 includes a sheath base 11, a main body section 12, and a bending section 13 connected in sequence from the proximal end to the distal end, and at least two of the annular electrodes 50 are spaced apart and arranged on the bending section 13; all the annular electrode connection wires 60 are converged and connected to the tail wire interface 20; the functional component 30 is detachably inserted into the outer sheath tube 10, and the distal end of the functional component 30 can extend out from the distal end of the bending section 13; the proximal end of the functional component 30 extends out of the proximal end of the outer sheath tube 10 and is detachably connected to the tail wire interface 20 through the functional component connection wire 40.

[0029] During interventional treatment, the outer sheath tube 10 is mainly used to provide support for the functional component 30 and establish a passage. It can be understood that the outer sheath tube 10 has a certain flexibility and can bend along with the blood vessel. In some application scenarios, the bending section 13 of the outer sheath tube 10 has a certain self-recovery property. It has a fixed bent shape when not subjected to external force. When inserted into the blood vessel, the shape of the bending section 13 will be restricted by the blood vessel. After the bending section 13 intervenes in a predetermined position (such as the ventricle), the bending section 13 changes towards the initial bent shape based on its self-recovery property.

[0030] The functional component 30 is a component detachably inserted into the outer sheath tube 10. It is used to intervene in the target position under the guidance of the outer sheath tube 10 and perform functions such as puncture, guidance, mapping, or stimulation. When used to perform the puncture function, the functional component 30 preferably includes a dilator 31 and a puncture needle 32; when used to perform the guidance function, the functional component 30 preferably includes a guide wire (not shown); when used to perform the mapping function, the functional component 30 preferably includes a mapping catheter (not shown); when used to perform the stimulation function, the functional component 30 preferably includes a stimulation electrode (not shown).

[0031] Traditional intracardiac catheter sheath sets can only achieve two-dimensional visualization under X-rays. On the one hand, the reading difficulty of X-ray two-dimensional images is greater than that of three-dimensional visual images, and they express less information. On the other hand, extensive use of X-rays may cause harm to the health of the operator and the patient.

[0032] The three-dimensional visualization intracardiac catheter sheath set provided in this embodiment has the annular electrode 50 convergently connected to the tail wire interface 20 through the annular electrode connection wire 60. At the same time, the functional component 30 is also connected to the tail wire interface 20 through the functional component connection wire 40, enabling the three-dimensional mapping device connected to the tail wire interface 20 to obtain the position information of the annular electrode 50 and the position information of the functional component 30 together. Thus, not only can the bending shape of the distal part of the outer sheath tube 10 be known, but also the extension distance of the functional component 30 relative to the outer sheath tube 10 can be known. It can be carried out without the assistance of X-rays, effectively overcoming the radiation problem, and the three-dimensional feedback expression is more intuitive, improving the guiding value for transseptal puncture.

[0033] Hereinafter, the functional component 30 for performing the puncture function will be taken as an example for illustration. However, it should be understood that performing the puncture function is only a functional demonstration of the functional component 30 rather than a limitation. This embodiment does not limit the specific functions and structures of the functional component 30.

[0034] In an alternative exemplary embodiment, the functional component includes a dilator 31 and a puncture needle 32; the dilator 31 is movably disposed through the outer sheath tube 10, and the distal end of the dilator 31 can extend out from the distal end of the bending section 13; the dilator 31 has a lumen axially penetrating through itself, and the puncture needle 32 is movably disposed through the lumen, and the distal end of the puncture needle 32 can extend out from the distal end of the dilator 31. The distal end of the puncture needle 32 has a sharp needle tip 321 for performing puncture. The distal end of the dilator 31 is used to dilate the puncture hole after the puncture needle 32 performs puncture.

[0035] Preferably, the three-dimensional visualization intracardiac catheter sheath set further includes a connection interface 70 for connecting the functional component connection wire 40; the connection interface 70 is disposed on the sheath base 11; the tail wire interface 20 includes a first connection end 21 and a second connection end 22, wherein the first connection end 21 is electrically connected to the connection interface 70 within the sheath base 11; all the annular electrode connection wires 60 are convergently connected to the second connection end 22; the proximal end of the puncture needle 32 is detachably connected to the connection interface 70 through the functional component connection wire 40.

[0036] For the convenience of connection, the functional component connection line 40 and the annular electrode connection line 60 are integrally connected to the tail line interface 20. In this way, during use, the three-dimensional mapping device only needs to be connected to the tail line interface 20 to simultaneously obtain the electrocardiogram signals from the annular electrode 50 and the functional component 30, thereby obtaining the position information of the annular electrode 50 and the position information of the functional component 30. However, the functional component 30 is detachable relative to the outer sheath 10. Therefore, a connection interface 70 independent of the tail line interface 20 is provided on the sheath base 11, and the functional component connection line 40 can be conveniently connected to the connection interface 70. The connection interface 70 is electrically connected to the first connection end 21 of the tail line interface 20 inside the sheath base 11. Thus, the electrocardiogram signal of the functional component 30 can be transmitted to the first connection end 21 of the tail line interface 20 through the functional component connection line 40 and the connection interface 70 in sequence. Further, the annular electrode connection line 60 is collectively connected to the second connection end 22, and the electrocardiogram signal of the annular electrode 50 can be transmitted to the second connection end 22 of the tail line interface 20 through the annular electrode connection line 60. With such a configuration, the first connection end 21 and the second connection end 22 of the tail line interface 20 collectively connect the functional component connection line 40 and the annular electrode connection line 60 at the same time, and the three-dimensional mapping device only needs to be connected to the tail line interface 20.

[0037] Optionally, one end of the functional component connection line 40 far from the connection with the connection interface 70 has a chuck 41; the puncture needle 32 has a needle base 322, and the needle base 322 extends out of the proximal end of the dilator 31; the chuck 41 is detachably connected to the needle base 322. The needle base 322 is preferably made of a metal material and is electrically conductive with the needle tip 321. The chuck 41 is, for example, a spring clip, which can be conveniently clamped on the needle base 322 and is electrically conductive with the needle base 322.

[0038] Optionally, the three-dimensional visualization intracardiac catheter sheath group further includes a side branch 81 and a three-way valve 82; the side branch 81 and the three-way valve 82 are arranged on the sheath base 11. The side branch 81 and the three-way valve 82 can be used for functions such as injecting medicaments, aspirating blood, and blood pressure monitoring. The specific structure thereof can refer to the prior art, and will not be elaborated in this embodiment.

[0039] Please refer to Figure 2, Optionally, the loop electrode connection wire 60 is disposed in the tube wall of the outer sheath tube 10. In an alternative exemplary embodiment, the tube wall of the outer sheath tube 10 includes at least two layers of structures 14, and the loop electrode connection wire 60 is disposed between the at least two layers of structures 14. Optionally, the at least two layers of structures 14 may be the same structural layer or different structural layers. The structure 14 may be, for example, a polymer layer or a polymer-metal composite layer, or may be a coating formed by processing the inner and outer surfaces of the sheath body of the outer sheath tube 10 as required. The loop electrode connection wire 60 may be embedded in the interlayer between the at least two layers of structures 14 through a processing technique similar to reflow soldering.

[0040] The loop electrode connection wires 60 corresponding to different loop electrodes 50 are insulated from each other. Further, the tail wire interface 20 may further include an extension section 23. The extension section 23 internally includes a wire cluster 24, which is actually composed of the functional component connection wires 40 and the loop electrode connection wires 60 converging together, and is preferably wrapped with a sleeve on the outside.

[0041] Please continue to refer to Figure 1 , The loop electrodes 50 are preferably uniformly distributed on the bending section 13 to accurately obtain the shape and position information of the entire bending section 13. More preferably, the number of the loop electrodes 50 is 2 to 3. If there is only 1 loop electrode 50, the bending shape of the bending section 13 cannot be reflected. When the number of the loop electrodes 50 is too large, it is not conducive to the processing of the bending section 13. When the number of the loop electrodes 50 is 2 to 3, it can not only reflect the bending shape of the bending section 13, but also take into account the convenience of processing.

[0042] An embodiment of the present invention further provides a three-dimensional visualization intracardiac catheter sheath system, which includes the three-dimensional visualization intracardiac catheter sheath group as described above, and further includes a three-dimensional mapping device. The three-dimensional mapping device is configured to fit the bending shape of the bending section 13 and the extension distance of the functional component 30 relative to the outer sheath tube 10 according to the position information of at least two of the loop electrodes 50 and the position information of the functional component 30. After the three-dimensional mapping device acquires the electrocardiogram signals from the loop electrodes 50, the position information of the loop electrodes 50 can be obtained. Based on the position information of at least two loop electrodes 50, the bending shape of the bending section 13 can be fitted. Further, after the three-dimensional mapping device acquires the electrocardiogram signals from the functional component 30, the position information of the functional component 30 can be obtained. Combining the position information of the loop electrodes 50, the extension distance of the functional component 30 relative to the outer sheath tube 10 can be obtained.

[0043] It can be understood that, in the case where the functional component 30 includes the puncture needle 32, the electrocardiogram signal collected by the puncture needle 32 is actually the electrocardiogram signal located at the needle tip 321 of the dilator 31. Therefore, after the three-dimensional mapping device receives the electrocardiogram signal at the needle tip 321, the position information of the needle tip 321 can be calculated.

[0044] Furthermore, the three-dimensional visualization intracardiac catheter sheath system further includes a display device (not shown), which is connected to the three-dimensional mapping device and is used to display the bending shape of the distal end of the outer sheath 10 fitted by the three-dimensional mapping device and the extension distance of the functional component 30 relative to the outer sheath 10. The display device can be, for example, a display screen, which can intuitively show the current state of the three-dimensional visualization intracardiac catheter sheath set to guide the operation.

[0045] After the transseptal puncture is completed, the three-dimensional visualization intracardiac catheter sheath set can still play a role. For example, after the puncture is completed, after removing the puncture needle 32 and the dilator 31, a mapping catheter can be inserted into the outer sheath 10. That is, at this time, the functional component 30 is used to perform the mapping function, and the functional component 30 includes a mapping catheter. At this time, the position information of the bending section 13 itself and the position information of the mapping catheter can be displayed together on the display device to help the operator better grasp the positions of the bending section 13 and the mapping catheter. The annular electrode 50 can be used as a reference electrode, which plays a role in filtering far-field interference potentials when used in cooperation with the mapping catheter.

[0046] In summary, in the three-dimensional visualization intracardiac catheter sheath set and the three-dimensional visualization intracardiac catheter sheath system provided by the present invention, the three-dimensional visualization intracardiac catheter sheath set includes: an outer sheath, a tail wire interface, a functional component, a functional component connecting wire corresponding to and connected to the functional component, at least two annular electrodes, and an annular electrode connecting wire corresponding to and connected to each annular electrode; the tail wire interface is used to connect to a three-dimensional mapping device; the outer sheath includes a sheath seat, a main body section, and a bending section connected in sequence from the proximal end to the distal end, and at least two of the annular electrodes are arranged at intervals on the bending section; all the annular electrode connecting wires are converged and connected to the tail wire interface; the functional component is detachably inserted through the outer sheath, and the distal end of the functional component can extend out from the distal end of the bending section; the proximal end of the functional component extends out of the proximal end of the outer sheath and is detachably connected to the tail wire interface through the functional component connecting wire. With such a configuration, the annular electrodes are converged and connected to the tail wire interface through the annular electrode connecting wires, and at the same time, the functional component is also connected to the tail wire interface through the functional component connecting wire, so that the three-dimensional mapping device connected to the tail wire interface can obtain the position information of the annular electrodes and the position information of the functional component together, so that not only the bending shape of the distal part of the outer sheath can be known, but also the extension distance of the functional component relative to the outer sheath can be known, improving the guiding value for the transseptal puncture.

[0047] It should be noted that the above-mentioned several embodiments can be combined with each other. The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. A three-dimensional visualization intracardiac catheter sheath set, characterized in that, it includes: an outer sheath tube, a tail wire interface, a functional component, a functional component connecting wire corresponding to and connected to the functional component, at least two ring electrodes, and a ring electrode connecting wire corresponding to and connected to each ring electrode one by one; the tail wire interface is used to connect to a three-dimensional mapping device; the outer sheath tube includes a sheath base, a main body section, and a bending section connected in sequence from the proximal end to the distal end, and at least two of the ring electrodes are spacedly arranged on the bending section; all the ring electrode connecting wires are gathered and connected to the tail wire interface; the functional component is detachably inserted into the outer sheath tube, and the distal end of the functional component can extend out from the distal end of the bending section; the proximal end of the functional component extends out from the proximal end of the outer sheath tube and is detachably connected to the tail wire interface through the functional component connecting wire.

2. The three-dimensional visualization intracardiac catheter sheath set according to claim 1, characterized in that, the ring electrode connecting wire is arranged in the tube wall of the outer sheath tube.

3. The three-dimensional visualization intracardiac catheter sheath set according to claim 2, characterized in that, the tube wall of the outer sheath tube includes at least two layers of structures, and the ring electrode connecting wire is arranged between the at least two layers of structures.

4. The three-dimensional visualization intracardiac catheter sheath set according to claim 1, characterized in that, the three-dimensional visualization intracardiac catheter sheath set further includes a connection interface for connecting the functional component connecting wire; the connection interface is arranged on the sheath base; the tail wire interface includes a first connection end and a second connection end, wherein the first connection end is electrically connected to the connection interface inside the sheath base; all the ring electrode connecting wires are gathered and connected to the second connection end.

5. The three-dimensional visualization intracardiac catheter sheath set according to claim 4, characterized in that, the functional component includes a dilator and a puncture needle; the dilator is movably inserted into the outer sheath tube, and the distal end of the dilator can extend out from the distal end of the bending section; the dilator has a lumen penetrating along its own axis, and the puncture needle is movably inserted into the lumen, and the distal end of the puncture needle can extend out from the distal end of the dilator; the proximal end of the puncture needle is detachably connected to the connection interface through the functional component connecting wire.

6. The three-dimensional visualization intracardiac catheter sheath set according to claim 5, characterized in that, one end of the functional component connecting wire away from the connection with the connection interface has a chuck; the puncture needle has a needle seat, and the needle seat extends out from the proximal end of the dilator; the chuck is detachably connected to the needle seat.

7. The three-dimensional visualization intracardiac catheter sheath set according to claim 1, characterized in that, the number of the ring electrodes is 2 to 3.

8. The three-dimensional visualization intracardiac catheter sheath set according to claim 1, characterized in that, the three-dimensional visualization intracardiac catheter sheath set further includes a side branch and a three-way valve; the side branch and the three-way valve are arranged on the sheath base.

9. A three-dimensional visualization intracardiac catheter sheath system, characterized in that, Comprising the three-dimensional visualization intracardiac catheter sheath set according to any one of claims 1 to 8, further comprising a three-dimensional mapping device; the three-dimensional mapping device is configured to fit the bending shape of the bending section and the extension distance of the functional component relative to the outer sheath tube according to the position information of at least two of the annular electrodes and the position information of the functional component.

10. The three-dimensional visualization intracardiac catheter sheath system according to claim 9, wherein, the three-dimensional visualization intracardiac catheter sheath system further comprises a display device, the display device is connected to the three-dimensional mapping device, and is used to display the bending shape of the distal end of the outer sheath tube and the extension distance of the functional component relative to the outer sheath tube fitted by the three-dimensional mapping device.

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