Mechanical mapping electrophysiology catheter with signal transmitter

Abstract

The utility model discloses a mechanical mapping electrophysiology catheter with a signal emitter, which comprises a catheter body, the catheter body comprises a main body section and a bending section which are integrally connected, and the bending section is positioned at the far end of the main body section; the electrode assembly is arranged on the bending section and comprises two annular electrodes which are arranged at intervals and a group of matrix type electrodes which are annularly arranged; the pressure sensor is arranged on the bending section; the signal generator is arranged close to the near end of the main body section, and the signal generator is in signal connection with the electrode assembly and the pressure sensor so as to transmit monitoring data to mapping equipment. According to the mechanical mapping electrophysiology catheter with the signal emitter, the operation flexibility and the operation precision can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially a kind of mechanics mapping electrophysiological catheter with signal transmitter. BACKGROUND

[0002] After acute myocardial infarction, myocardial injury and subsequent scarring lead to the occurrence of ventricular enlargement and heart failure, especially in patients with anterior myocardial infarction complicated with aneurysm, heart failure is more likely to occur. In China, about 10% to 40% of myocardial infarction patients will develop aneurysm. In the past, the treatment of aneurysm was through surgical operation, which required thoracotomy, had large trauma, high risk of infection, slow recovery and poor prognosis, and not all patients could tolerate it. At the same time, if too much ventricular resection is performed, the heart chamber will become smaller, the surgical effect will be poor or even harmful, and this method and equipment require experienced medical team to cooperate, which greatly increases the labor cost.

[0003] Percutaneous ventricular reconstruction is a new treatment for patients with old anterior myocardial infarction complicated with heart failure. This technique uses a minimally invasive interventional method, and the interventional catheter is introduced through the radial artery approach. The occluder enters the catheter at the left ventricular apex. The whole process does not require surgery and the heart does not need to be sutured.

[0004] Electrophysiological catheter is one of the interventional catheters, which plays a key role in percutaneous ventricular reconstruction. It is mainly used for real-time monitoring of cardiac electrical activity, positioning of abnormal arrhythmia source, guiding operation and ensuring safety. The existing electrophysiological catheter is usually equipped with single or double electrodes, which limits the resolution of collecting the electrical activity of the fine area of myocardium and the three-dimensional structure inside the heart, and lacks accurate spatial positioning of the lesion. It cannot provide a full range of electrophysiological perspective in the operation. In addition, the traditional electrophysiological catheter usually relies on wire transmission of data, which can easily cause wire entanglement or limited operation during the operation, especially in complex internal operation of human body, the physical interference of wire can affect the flexibility of catheter. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of mechanics mapping electrophysiological catheter with signal transmitter, for assisting in implanting ventricular aneurysm occluder and other instruments in ventricle, with higher stability, safety and accuracy, to solve the problem of low real-time monitoring and positioning accuracy of existing device in operation.

[0006] Based on the above problems, the technical scheme provided by the utility model is:

[0007] The mechanics mapping electrophysiological catheter with signal transmitter comprises:

[0008] The catheter body comprises a main body segment and a curved segment connected integrally, and the curved segment is located at the distal end of the main body segment.

[0009] an electrode assembly arranged in the curved segment, comprising two annular electrodes and a set of matrix electrodes arranged in annular array;

[0010] a pressure sensor arranged in the curved segment;

[0011] a signal generator arranged near the proximal end of the main body segment, the signal generator being signal-connected with the electrode assembly and the pressure sensor to transmit monitoring data to a mapping device.

[0012] In some embodiments, the matrix electrodes comprise a plurality of arc-shaped electrodes arranged in a plurality of annular arrays, each annular array having an equal number of arc-shaped electrodes.

[0013] In some embodiments, the matrix electrodes comprise 24 arc-shaped electrodes arranged in 3 annular arrays, each annular array having 8 arc-shaped electrodes.

[0014] In some embodiments, the proximal end of the main body segment is provided with a connector for connecting a syringe.

[0015] In some embodiments, the surface of the connector is provided with an anti-slip coating.

[0016] In some embodiments, the pressure sensor is a thin-film piezoresistive pressure sensor embedded in the outer wall of the curved segment.

[0017] In some embodiments, the signal generator is provided with a lithium battery, a button and an indicator light.

[0018] In some embodiments, the surface of the catheter body is provided with a polytetrafluoroethylene coating, a polyvinylpyrrolidone hydrophilic coating and a heparin anticoagulant coating arranged from the inside to the outside.

[0019] In the above technical solution, the distal end refers to the end close to the patient during surgery, and the proximal end refers to the end away from the patient during surgery.

[0020] Compared with the prior art, the advantages of the present application are:

[0021] (1) By integrating bipolar electrodes and matrix electrodes in the catheter, the electrical activity of the left ventricle can be monitored in real time, an accurate three-dimensional model can be generated, and precise surgical guidance can be provided.

[0022] (2) By integrating a pressure sensor in the catheter, the mechanical state of the left ventricle can be monitored in real time, and accurate data feedback can be provided.

[0023] (3) Through the signal transmitter, seamless data transmission can be realized, wire entanglement can be avoided, the flexibility of operation and the stability of data transmission can be improved, and the risk of electromagnetic interference can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows, and the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings.

[0025] Figure 1 It is a structural schematic diagram of the mechanical mapping electrophysiology catheter with a signal transmitter of the present application embodiment.

[0026] Figure 2 It is a structural schematic diagram of the present application embodiment.

[0027] Figure 3 It is a working state schematic diagram of the present application embodiment.

[0028] Figure 4 It is a working state schematic diagram of the present application embodiment.

[0029] Among them:

[0030] 100, catheter body; 101, connecting head; 102, threaded part; 201, ring electrode; 202, matrix electrode; 300, pressure sensor; 400, signal transmitter; 401, button; 402, indicator light; 403, wire; 500, occluder delivery device; 601, left ventricular aneurysm occluder in folded state; 601, left ventricular aneurysm occluder in unfolded state. DETAILED DESCRIPTION

[0031] The above scheme will be further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not marked are usually the conditions in the conventional experiment.

[0032] As shown in Figure 1 and Figure 2 It is a structural schematic diagram of the present application embodiment, and provides a mechanical mapping electrophysiology catheter with a signal transmitter, which comprises a catheter body 100, and an electrode assembly, a pressure sensor 300 and a signal generator 400 arranged on the catheter body 100.

[0033] The catheter body 100 comprises a main body segment and a curved segment connected integrally, the curved segment is slightly curved from the distal end of the main body segment, i.e. the curved segment is arranged at the distal end of the main body segment.

[0034] The surface of the catheter body 100 is coated from inside to outside with a polytetrafluoroethylene lubricating coating, a polyvinylpyrrolidone hydrophilic coating, and a heparin anticoagulant coating.

[0035] A connecting head 101 is arranged at the proximal end of the main body segment for connecting a syringe, the connecting head 101 is used for holding by a user to perform pre-treatment, exhaust, drug delivery and other operations through the connected syringe.

[0036] In order to facilitate the connection of the connecting head 101 and the syringe, a threaded portion 102 is arranged on the connecting head 101 to be threadedly connected with the syringe.

[0037] In order to facilitate the operator to hold and operate, an anti-slip coating is arranged on the surface of the connecting head 101.

[0038] An electrode assembly is arranged on the curved segment for monitoring the electrical physiological activity of the left ventricle, comprising two annular electrodes 201 arranged at intervals and a set of annularly arranged matrix electrodes 202, the electrocardiogram is obtained by collecting the potential difference in the ventricle through the annular electrodes 201, and the matrix electrodes 202 assist in filtering background noise.

[0039] The matrix electrodes 202 comprise a plurality of arc-shaped electrodes arranged in a plurality of annular shapes, the number of electrodes on each annular shape is the same, in this example, the matrix electrodes 202 comprise 24 arc-shaped electrodes arranged in 3 annular shapes, and there are 8 arc-shaped electrodes on each annular shape, the arrangement of the matrix electrodes 202 enables the electrophysiological catheter to perform multi-point sampling, and cooperates with external imaging equipment and mapping equipment to generate a high-precision real-time three-dimensional model of the ventricle.

[0040] A pressure sensor 300 is arranged on the curved segment for monitoring the mechanical state of the ventricle, the pressure sensor 300 is a thin-film piezoresistive pressure sensor embedded in the outer wall of the curved segment and encapsulated by a polyimide material.

[0041] The signal generator 400 is positioned near the proximal end of the main body section. It connects to the electrode assembly and pressure sensor 300 to transmit monitoring data to the mapping equipment. The signal transmitter 400 is powered by a built-in lithium battery, allowing for greater user flexibility and preventing wire tangling during mapping. It also utilizes the 401–406 MHz frequency band specified by the Medical Implantable Communication Service (MICS) to minimize external electromagnetic interference and improve signal transmission stability. The signal generator 400 includes a button 401 and an indicator light 402 for connecting to the mapping equipment and indicating successful connection.

[0042] The working principle of this utility model is as follows:

[0043] First, connect the occluder delivery device 500 and the folded left ventricular aneurysm occluder 601 for later use. During the procedure, after the electrophysiological catheter reaches the location of the left ventricular lesion, insert the connector from the connector 101 into the electrophysiological catheter. Use the delivery device 500 to continuously push the folded left ventricular aneurysm occluder 601 until the occluder extends from the distal end, completing the assembly. Figure 3 As shown.

[0044] The electrode assembly, pressure sensor 300, and signal transmitter 400 work together to perform real-time mapping of the left ventricle during the procedure. Once the electrophysiology catheter is accessed via the radial artery and its distal end reaches the left ventricle, the user presses and holds button 401, causing indicator light 402 to flash. At this point, the signal transmitter 400 initiates pairing, and the user connects to the external mapping device. Once the connection is successful, indicator light 402 remains constantly lit. The electrode assembly then begins operation. The ring electrode 201 collects the potential difference within the ventricle to obtain an electrocardiogram (ECG), while the matrix electrode 202 filters background noise. The matrix electrode 202, composed of 24 microelectrodes, allows the electrophysiology catheter to perform multi-point sampling, generating a high-precision real-time 3D model of the ventricle in conjunction with external angiography and mapping equipment. Simultaneously, the pressure sensor 300 collects intraventricular pressure, and the mapping device uses this data to calculate a real-time stress-strain cloud map of the ventricle, identifying vulnerable areas of the left ventricle and guiding the surgeon to avoid these areas during the procedure.

[0045] When the occluder 601 is carried by the delivery device 500 and reaches the designated lesion location through the electrophysiological catheter, due to the rebound force of the occluder, its stent will slowly deploy into the deployed state of the left ventricular aneurysm occluder 602. Figure 4 As shown. Then, press the button on the delivery device 500 to rotate the delivery rod, disconnect it from the deployed left ventricular aneurysm occluder 602, and pull it out of the catheter body 100 to complete the occlusion.

[0046] In conclusion, the electrophysiological catheter can improve the flexibility of operation, and can accurately position, real-time monitor the mechanical state and electrophysiological state of the left ventricle, and improve the precision of operation.

[0047] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A mechanical mapping electrophysiology catheter with a signal transmitter, characterized in that, The catheter body comprises a main body section and a curved section connected integrally, the curved section being located at the distal end of the main body section; An electrode assembly is arranged in the curved section, comprising two annular electrodes and a set of annularly arranged matrix electrodes; A pressure sensor is arranged in the curved section; A signal generator is arranged near the proximal end of the main body section, the signal generator being connected with the electrode assembly and the pressure sensor to transmit monitoring data to a mapping device. The matrix electrodes comprise a plurality of arc-shaped electrodes arranged in multiple annular rings, the number of electrodes in each annular ring being equal.

2. The mechanical mapping electrophysiology catheter with signal transmitter of claim 1, wherein: The matrix electrodes comprise 24 arc-shaped electrodes arranged in three annular rings, each annular ring having 8 arc-shaped electrodes.

3. The mechanical mapping electrophysiology catheter with signal transmitter of claim 2, wherein: The proximal end of the main body section is provided with a connector for connecting a syringe.

4. The mechanical mapping electrophysiology catheter with signal transmitter of claim 1, wherein: The connector is provided with a threaded portion for threaded connection with the syringe.

5. The mechanical mapping electrophysiology catheter with signal transmitter of claim 4, wherein: The surface of the connector is provided with an anti-slip coating.

6. The mechanical mapping electrophysiology catheter with signal transmitter of claim 4, wherein: The pressure sensor is a thin-film piezoresistive pressure sensor embedded in the outer wall of the curved section.

7. The mechanical mapping electrophysiology catheter with signal transmitter of claim 1, wherein: The signal generator is provided with a lithium battery, a button and an indicator light.

8. The mechanical mapping electrophysiology catheter with signal transmitter of claim 1, wherein: The surface of the catheter body is provided with a polytetrafluoroethylene coating, a polyvinylpyrrolidone hydrophilic coating and a heparin anticoagulant coating arranged from the inside to the outside.

9. The mechanical mapping electrophysiology catheter with signal transmitter of claim 1, wherein: ​

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