Real-time visible mapping catheter

Abstract

The utility model discloses a real-time visible mapping catheter in the technical field of mapping catheters, which comprises a first catheter which is a multi-cavity catheter and comprises a catheter cavity, a guide wire cavity and a guide wire cavity; the near end of the first catheter is connected with a functional handle, a groove is formed in the far end of the first catheter, and a guide wire penetrates through the guide wire cavity; the second catheter is arranged in the catheter cavity, the near end of the second catheter is also connected with the functional handle, the far end of the second catheter is located in the groove, and a tension wire is arranged in the second catheter; the ultrasonic transducer is arranged at the far end of the first catheter, the mapping electrode is arranged at the far end of the second catheter, and the tail of the functional handle is provided with two connecting channels which are respectively connected with the ultrasonic host and the electrophysiological system; the functional handle is used for controlling the guide wire and the tension wire. According to the mapping catheter, the position of the mapping electrode in the heart can be visually judged, mapping of the electric potential in the heart can be rapidly and effectively carried out, the accuracy and speed of mapping of the electric potential of the heart part are improved, and the operation time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mapping catheter, especially in real time visual mapping catheter. BACKGROUND

[0002] The current three-dimensional electrophysiological mapping process of heart often needs to use multiple multi-electrode mapping catheters, which enter the heart cavity through femoral vein puncture, directly contact the endocardium for direct measurement of electric potential, but the above method has defects, first, due to the complex three-dimensional structure of the heart, usually multiple different shape mapping catheters are needed to better adhere to the endocardium, and the price of a single mapping catheter is high, and it is disposable, so the cost is high, which will lead to high cost.

[0003] At present, the mapping is carried out by the doctor relying on rich experience. The doctor needs to imagine the position of the catheter in the heart (the position of the catheter cannot be directly seen) during the whole operation process, and then controls the catheter by operating the handle end to make the catheter head end contact the heart tissue part, which is completely limited by the operation experience of the doctor. In most cases, a lot of positions need to be found to find the corresponding target point, and it is not easy to find the target position. Therefore, before mapping, it is often necessary to assist with ultrasonic imaging, that is, intracardiac echocardiography (ICE). The ICE technology can be used to generate a three-dimensional volume image of a patient's heart or other anatomical structure from a plurality of two-dimensional ultrasound images taken from within the patient's heart. Advantageously, the ICE imaging mode can provide high-resolution real-time visualization of the heart structure and continuous monitoring of the catheter orientation in the heart, and also helps to identify potential complications early.

[0004] However, the existing cardiac ultrasound image modeling and mapping are carried out separately, and double-tube operation is carried out in a narrow blood vessel, which is not only difficult to operate, but also needs to consider the cooperation between the two, and the operation level of the doctor is still very high, and it takes a long time. UTILITY MODEL CONTENT

[0005] The application provides a real-time visual mapping catheter, which solves the problems of difficult electrophysiological mapping process and long time in the prior art, and realizes rapid and effective mapping of the electric potential inside the heart.

[0006] The application provides a real-time visual mapping catheter, which includes a first catheter, a second catheter, an ultrasonic transducer, a mapping electrode and a functional handle.

[0007] The first catheter is a multi-lumen tube, including a catheter lumen, a guide wire lumen and a guide wire lumen; the first catheter is connected with the functional handle at the proximal end, the first catheter is provided with a groove at the distal end, and the catheter lumen is in communication with the groove; a guide wire is arranged in the guide wire lumen, and the guide wire is used to control the bending of the distal end of the first catheter.

[0008] The second catheter is arranged in the catheter cavity, the second catheter proximal end is also connected with the function handle, and the second catheter distal end is located in the groove, a tension wire is arranged in the second catheter, and the tension wire is used for controlling the second catheter distal end to bend;

[0009] The ultrasonic transducer is arranged at the first catheter distal end, the mapping electrode is arranged at the second catheter distal end, and the function handle tail part has two connection channels, which are respectively connected with an ultrasonic host and an electrophysiological system;

[0010] The wire cavity is provided with a wire, and the wire is used for connecting the ultrasonic transducer, the mapping electrode and the function handle corresponding connection channel;

[0011] The function handle is used for controlling the guide wire and the tension wire respectively.

[0012] The above embodiment has the beneficial effects that by using intracardiac echocardiography (ICE) technology, the mapping catheter can intuitively judge the position of the mapping electrode in the heart and the tissue structure of the heart on the basis of real-time ultrasonic imaging, and the mapping of the internal potential of the heart is performed, so that the precision and speed of the mapping of the potential of the heart part are improved, and the operation time is shortened. Meanwhile, when the mapping catheter is applied to ultrasonic modeling, the ultrasonic image is combined with the potential mapping, so that the efficiency and accuracy of the modeling of the internal structure of the heart are improved, and the safety of the operation is improved.

[0013] On the basis of the above embodiment, the present application can be further improved, and the specific improvements are as follows:

[0014] In one of the embodiments of the present application, the ultrasonic transducer is arranged at the most distal end of the first catheter, and the groove is located between the ultrasonic transducer and the function handle.

[0015] In one of the embodiments of the present application, a spacing is arranged between the ultrasonic transducer and the groove. After the second catheter is bent, the electrode is located in the field of view of the ultrasonic transducer.

[0016] In one of the embodiments of the present application, the second catheter distal end is shaped after being bent. In a conventional state, the second catheter distal end is kept bent at a certain angle, so that the second catheter is kept in a bent state during mapping, and the mapping is facilitated.

[0017] In one of the embodiments of the present application, the inner wall of the groove is provided with a protrusion, and the second catheter end part can be clamped on the protrusion. Before mapping, the second catheter end part is clamped on the protrusion and kept horizontal with the first catheter, and when the first catheter enters different blood vessel tissues and reaches the target blood vessel tissue, the tension wire is pulled, the second catheter head part is popped out, and the mapping is started.

[0018] In one embodiment of the present application, the ultrasonic transducer is arranged obliquely towards the second catheter direction. The ultrasonic field of view can observe the mapping electrode catheter.

[0019] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0020] 1. The mapping catheter can intuitively determine the position of the mapping electrode in the heart and the tissue structure of the heart through the ultrasonic image, quickly and effectively map the internal potential of the heart, improve the accuracy and speed of mapping the potential of the heart part, and shorten the operation time.

[0021] 2. The mapping catheter can also be applied to ultrasonic modeling. The ultrasonic image combined with the potential mapping can improve the efficiency and accuracy of the internal structure modeling of the heart and improve the safety of the operation.

[0022] 3. The ultrasonic transducer of the mapping catheter is arranged obliquely towards the second catheter direction, so that the ultrasonic field of view can observe the mapping electrode catheter. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0024] Figure 1 It is a structural schematic diagram of a real-time visual mapping catheter in the embodiments of the present application;

[0025] Figure 2 It is a sectional structural schematic diagram of a first catheter in the embodiments of the present application;

[0026] Figure 3 It is a plan view structural schematic diagram of a distal end of the first catheter in the embodiments of the present application;

[0027] Figure 4 It is an elevation structural schematic diagram of the distal end of the first catheter in the embodiments of the present application;

[0028] Figure 5 It is an elevation structural schematic diagram of the distal end of the first catheter when the ultrasonic transducer is obliquely arranged in the embodiments of the present application.

[0029] In the drawings, 1. first catheter, 11. catheter lumen, 12. guide wire lumen, 13. guide wire lumen, 14. guide wire, 15. guide wire, 16. groove, 17. protrusion, 2. second catheter, 21. pull wire, 3. ultrasonic transducer, 4. mapping electrode, 5. functional handle, 6. ultrasonic main machine, 7. electrophysiology system. DETAILED DESCRIPTION

[0030] The present application will be further illustrated in conjunction with the specific embodiments. It should be understood that these embodiments are only used to explain the present application and not used to limit the scope of the present application. After reading the present application, those skilled in the art can make various equivalent modifications to the present application, which all fall within the scope defined by the appended claims.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are only used to distinguish description and cannot be understood as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0034] The embodiment of the present application provides a real-time visual mapping catheter, which solves the problems of difficult and time-consuming in the prior art electrophysiological mapping process, and realizes rapid and effective mapping of the internal potential of the heart.

[0035] The technical scheme in the embodiment of the present application is to solve the above problems, and the general idea is as follows:

[0036] Embodiment:

[0037] As shown in Figures 1-4 A real-time visual mapping catheter, comprising: a first catheter 1, a second catheter 2, an ultrasonic transducer 3, a mapping electrode 4 and a functional handle 5;

[0038] The first catheter 1 is a multi-cavity tube, including a catheter cavity 11, a guide wire cavity 12, and a guide wire cavity 13. The catheter cavity 11 is used to pass the second catheter 2, the guide wire cavity 12 is used to pass the guide wire 14, and the guide wire cavity 13 is used to pass the guide wire 15. The first catheter 1 is connected with a functional handle 5 at the proximal end, and a groove 16 is formed at the distal end of the first catheter 1. The catheter cavity 11 is in communication with the groove 16. The guide wire 14 is arranged in the guide wire cavity 12, and is used to control the bending of the distal end of the first catheter 1 through the guide wire 14, so as to drive the first catheter 1 into different vascular tissues. The second catheter 2 is arranged in the catheter cavity 11, and the proximal end of the second catheter 2 is also connected with the functional handle 5. The distal end of the second catheter 2 is located in the groove 16, and the second catheter 2 is provided with a tension wire 21. The tension wire 21 is used to control the bending of the distal end of the second catheter 2. The functional handle 5 has a bending function, and can control the guide wire 14 and the tension wire 21 respectively.

[0039] The ultrasonic transducer 3 is arranged at the distal end of the first catheter 1, and is used to obtain an ultrasonic image. The mapping electrode 4 is arranged at the distal end of the second catheter 2, and is used to perform potential mapping. The tail of the functional handle 5 has two connection channels. One channel is connected with an ultrasonic host 6, and the other channel is connected with an electrophysiological system 7. The guide wire 15 is arranged in the guide wire cavity 13, and the ultrasonic transducer 3, the mapping electrode 4, and the corresponding connection channels of the functional handle 5 are connected through the guide wire 15, that is, the ultrasonic transducer 3 is connected with the ultrasonic host, and the mapping electrode 4 is connected with the electrophysiological system.

[0040] The ultrasonic transducer 3 is arranged at the distal end of the first catheter 1, and the groove 16 is located between the ultrasonic transducer 3 and the functional handle 5. The ultrasonic transducer 3 and the groove 16 are spaced apart by a certain distance, so as to ensure that the second catheter 2 is located in the field of view of the ultrasonic transducer 3 after being bent.

[0041] Further, the distal end of the second catheter 2 is bent and shaped. In a normal state (the tension wire 21 is not stressed), the second catheter 2 is kept bent at a certain angle. During mapping, the second catheter 2 is kept bent, which is convenient for mapping.

[0042] The head end of the tension wire 21 in the mapping catheter is shaped and designed. The tension wire 21 is in a state of being shaped and designed. After a certain force is applied to the tension wire 21 by the handle 5, the angle of the bent part of the mapping catheter changes with the stroke of the force.

[0043] Further, the groove 16 is provided with a protrusion 17, and the end of the second catheter 2 is clamped in the protrusion 17 and kept horizontal with the first catheter 1. Before mapping, the second catheter 2 and the first catheter 1 are kept consistent. When the first catheter 1 enters different vascular tissues, the second catheter 2 is pulled out of the protrusion 17 and the first catheter 1, and the head of the second catheter 2 is popped out, and mapping is started.

[0044] Optionally, as shown in FIG. 6, the second catheter 2 is provided with a guide wire cavity 22, and the guide wire 14 is arranged in the guide wire cavity 22. Figure 5As shown, the ultrasonic transducer 3 is arranged obliquely towards the second catheter 2, further ensuring that the ultrasonic field of view can observe the mapping electrode 4 catheter.

[0045] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0046] 1. The mapping catheter can intuitively determine the position of the mapping electrode in the heart and the tissue structure of the heart through the ultrasonic image, quickly and effectively perform the mapping of the internal potential of the heart, improve the precision and speed of the mapping of the potential of the heart part, and shorten the operation time.

[0047] 2. The mapping catheter can also be applied to ultrasonic modeling, and the ultrasonic image combined with the potential mapping can improve the efficiency and accuracy of the internal structure modeling of the heart and improve the safety of the operation.

[0048] 3. The ultrasonic transducer of the mapping catheter is arranged obliquely towards the second catheter, ensuring that the ultrasonic field of view can observe the mapping electrode catheter.

[0049] 4. The shape of the distal end of the second catheter of the mapping catheter is variable, better fitting the endocardium, thereby reducing the use amount of the mapping catheter.

[0050] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A real-time visual mapping catheter, comprising: The utility model relates to a kind of multi-functional catheter, including: First catheter, second catheter, ultrasonic transducer, mapping electrode and function handle; The first catheter is multi-cavity pipe, including catheter cavity, guide wire cavity, wire cavity;The first catheter proximal end is connected with the function handle, and the first catheter distal end is recessed, and the catheter cavity is communicated with the recess;Guide wire is arranged in the guide wire cavity; The second catheter is arranged in the catheter cavity, and the second catheter proximal end is also connected with the function handle and the second catheter distal end is located in the recess, and tension wire is arranged in the second catheter; The ultrasonic transducer is arranged in the first catheter distal end, and the mapping electrode is arranged in the second catheter distal end, and the function handle tail has two connection channels, and is connected with ultrasonic host and electrophysiological system respectively; Wire is arranged in the wire cavity, and the wire is used to connect ultrasonic transducer, mapping electrode and function handle corresponding connection channel; The function handle is used to control the guide wire and the tension wire respectively.

2. The mapping catheter of claim 1, wherein: The ultrasonic transducer is arranged in the most distal end of the first catheter, and the recess is located between the ultrasonic transducer and the function handle.

3. The mapping catheter of claim 2, wherein: Interval is provided between the ultrasonic transducer and the recess.

4. The mapping catheter of claim 1, wherein: The second catheter distal end is curved and shaped.

5. The mapping catheter of claim 4, wherein: The inner wall of the recess is provided with a protrusion, and the second catheter end can be clamped on the protrusion.

6. The mapping catheter of claim 1, wherein: The ultrasonic transducer is arranged obliquely towards the second catheter direction.

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