Intravascular stent electrode system

Abstract

The utility model discloses an intravascular stent electrode system which comprises an intravascular stent, an electrode contact, a guide wire, a signal collecting unit and a receiving coil, the intravascular stent can be implanted into a target area of an intracranial vascular system through an operation, and the electrode contact is connected to the intravascular stent and can collect intracranial signals. The guide wire can conduct stimulation current to the electrode contact and transmit signals collected by the electrode contact, the signal collecting unit is connected with the guide wire and can collect the signals transmitted by the guide wire, and the receiving coil is arranged on the signal collecting unit and forms electromotive force through a magnetic field. The electromotive force is converted by the power supply chip and then continuously supplies power to the signal collection unit and the electrode contact, so that the stable work of the signal collection unit can be maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a blood vessel stent electrode system. BACKGROUND

[0002] The blood vessel stent electrode is an innovative medical instrument combining the functions of blood vessel stent and electrode, mainly used in the fields of brain-computer interface (BCI) and nerve stimulation treatment. It is mainly implanted in the target area of intracranial blood vessel system through catheter venography nerve intervention surgery, and can record brain signals or perform electrical stimulation. Compared with traditional invasive brain electrodes, the blood vessel stent electrode has the advantages of small trauma, stable signal acquisition, etc.

[0003] The blood vessel stent electrode mainly comprises a blood vessel stent electrode, a guide wire and a programmer. The blood vessel stent electrode is used to push to the intracranial target area to collect the electroencephalogram of the target area. The guide wire is connected with the programmer and is led out from the jugular vein. The programmer is implanted subcutaneously in the chest to process the electroencephalogram collected by the electrode contact. The collected signal is wirelessly transmitted to the signal processing unit through the antenna for signal analysis and processing.

[0004] The programmer needs to be powered during operation. The existing power supply mode is to supply power by the battery device arranged in the programmer. However, due to the weak continuity of battery power supply, it is difficult to maintain the long-term operation of the programmer. Therefore, the programmer needs to be taken out and replaced with a new one, which causes inconvenience to the signal collection of the blood vessel stent electrode. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the above technical defects and provide a blood vessel stent electrode system to solve the technical problem of weak power supply continuity of the blood vessel stent electrode system in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a blood vessel stent electrode system, which comprises:

[0008] A blood vessel stent;

[0009] An electrode contact connected to the blood vessel stent;

[0010] A guide wire connected to the electrode contact;

[0011] A signal collection unit connected to the guide wire;

[0012] A transmitting antenna arranged in the signal collection unit for wireless transmission of the signal collection unit and the upper computer;

[0013] A receiving coil, electrically connected with the signal collecting unit, for cooperating with a magnetic field to form an electric current to power the signal collecting unit.

[0014] In some embodiments, the vascular stent electrode system further comprises a power supply unit and a transmitting coil, the transmitting coil being coupled with the receiving coil, the power supply unit being connected with the transmitting coil for powering the transmitting coil.

[0015] In some embodiments, the vascular stent electrode system comprises a mounting unit, the mounting unit comprising a magnetic attraction member, the magnetic attraction member being magnetically attracted and fixed with the signal collecting unit, the transmitting coil being installed on the mounting unit.

[0016] In some embodiments, the vascular stent electrode system further comprises a signal processing unit, the signal processing unit comprising a receiving antenna and a signal processing module, the receiving antenna being connected with the signal collecting unit for receiving the signal collected by the signal collecting unit, the signal processing module being connected with the signal collecting unit for processing the signal collected by the signal collecting unit.

[0017] In some embodiments, the vascular stent is made of a biocompatible material, nickel-titanium alloy.

[0018] In some embodiments, the vascular stent is provided with a biocompatible coating, the electrode contact being connected to the vascular stent through the biocompatible coating.

[0019] In some embodiments, the electrode contact and the surface of the guide wire are both wrapped with a layer of biocompatible flexible insulating material.

[0020] In some embodiments, the number of electrode contacts is one or more.

[0021] In some embodiments, the end of the guide wire away from the electrode contact is provided with a plug-in connector, the plug-in connector plugging the signal collecting unit.

[0022] In some embodiments, the plug-in connector plugs the signal collecting unit through a feed-through connector composed of a plurality of spring contacts.

[0023] Compared with the prior art, the blood vessel stent electrode system provided by the utility model through setting blood vessel stent, electrode contact, guide wire, signal collection unit, transmitting antenna and receiving coil, the blood vessel stent can be implanted in the target area of intracranial blood vessel system through operation, the electrode contact is connected to the blood vessel stent, and the intracranial signal can be collected, the guide wire can conduct stimulating current to the electrode contact and transmit the signal collected by the electrode contact through connecting the electrode contact, the signal collection unit is connected with the guide wire, the signal transmitted by the guide wire can be collected, the transmitting antenna is arranged in the signal collection unit, the signal collected by the signal collection unit can be wirelessly transmitted to the upper computer, the receiving coil is arranged in the signal collection unit, the receiving coil can continuously supply power to the signal collection unit and the electrode contact through magnetic coupling with the external transmitting coil, so that the stable work of the signal collection unit can be better maintained. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of the blood vessel stent electrode system provided by the utility model embodiment;

[0025] Figure 2 It is the structure schematic diagram of the blood vessel stent of the blood vessel stent electrode system provided by the utility model embodiment;

[0026] Figure 3 It is the use state diagram of the blood vessel stent electrode system provided by the utility model embodiment.

[0027] Reference Signs in the Drawings:

[0028] 10-blood vessel stent 20-electrode contact 30-guide wire

[0029] 31-plug-in part 40-signal collection unit 50-power supply unit

[0030] 60-mounting unit 70-signal processing unit 80-analysis terminal. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following is in combination with the drawings and embodiment, and the utility model is further detailed.The specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0032] In order to solve the technical problem that the power supply continuity of the blood vessel stent electrode in the prior art is weak, the utility model provides a kind of blood vessel stent electrode system, by the form of wireless power supply, guarantee the power supply continuity of blood vessel stent electrode system, facilitate the signal collection of blood vessel stent electrode system.

[0033] It should be noted that the vascular stent electrode system described in this utility model is used for, but not limited to, intracranial treatment and signal acquisition. For ease of explanation, this utility model only uses the application of the vascular stent electrode system to intracranial treatment and signal acquisition as an example. The principle of the vascular stent electrode system applied to other types of devices is essentially the same as that applied to intracranial treatment and signal acquisition, and will not be described in detail here.

[0034] The vascular stent electrode system provided by this utility model, such as Figures 1-3 As shown, the device includes a vascular stent 10, electrode contacts 20, guide wire 30, signal collection unit 40, transmitting antenna, and receiving coil. Electrode contacts 20 are connected to the vascular stent 10; guide wire 30 is connected to electrode contacts 20; signal collection unit 40 is connected to guide wire 30; and receiving coil is electrically connected to signal collection unit 40 to generate current in conjunction with a magnetic field to power signal collection unit 40.

[0035] Specifically, the vascular stent electrode system comprises a vascular stent 10, electrode contacts 20, guidewire 30, signal collection unit 40, transmitting antenna, and receiving coil. The vascular stent 10 can be surgically implanted into the target area of ​​the intracranial vascular system. The electrode contacts 20 are connected to the vascular stent 10 and can collect intracranial signals. The guidewire 30 is connected to the electrode contacts 20, which can supply power to the electrode contacts 20 and transmit the signals collected by the electrode contacts 20. The signal collection unit 40 is connected to the guidewire 30 and can collect the signals transmitted by the guidewire 30. The transmitting antenna is located in the signal collection unit 40 and can wirelessly transmit the signals collected by the signal collection unit 40 to the host computer. The receiving coil is installed in the signal collection unit 40 and forms an induced electromotive force through magnetic coupling with the external transmitting coil, which can continuously supply power to the signal collection unit 40 and the electrode contacts, thereby maintaining the stable operation of the signal collection unit 40.

[0036] In this embodiment, the vascular stent 10, electrode contact 20, guide wire 30, signal collection unit 40, and receiving coil are internal parts, while the transmitting coil is external parts. The transmitting coil of the external parts is wirelessly powered to the internal parts through electromagnetic induction coupling with the receiving coil of the internal parts.

[0037] In this embodiment, the signal collection unit 40 is equipped with a power chip connected to a receiving coil. The receiving coil is the energy receiving end, responsible for sensing the alternating magnetic field generated by the transmitting coil and converting it into an induced electromotive force (voltage). The power chip is responsible for the subsequent processing of the AC current induced by the receiving coil, rectifying it into DC current, and then converting it into a suitable current through voltage and current regulation circuit modules. Simultaneously, the power chip needs to be designed and optimized according to the characteristics of the receiving coil. For example, the inductance and Q value of the receiving coil affect the rectification and voltage regulation efficiency of the power chip. The input range and operating frequency of the power chip also need to be matched with the resonant frequency of the receiving coil to ensure efficient energy conversion. The power chip has overvoltage, overcurrent, short circuit, and overheat protection functions. These protection mechanisms can prevent the receiving coil from being damaged due to abnormal conditions (such as short circuits or overloads).

[0038] In one embodiment, the vascular stent electrode system further includes a power supply unit and a transmitting coil. The transmitting coil is coupled to a receiving coil, and the power supply unit is connected to the transmitting coil to supply power to the transmitting coil. Specifically, the power supply unit sends high-frequency alternating current to the transmitting coil, causing the transmitting coil to generate a magnetic field of a specific frequency. The receiving coil senses the magnetic field generated by the transmitting coil and converts it into electrical energy, which is then used to power the signal collection unit 40 through the rectification and filtering circuit of the power chip.

[0039] In this embodiment, the receiving coil mainly forms current through electromagnetic induction coupling with the transmitting coil, and is also tuned to the same frequency to form magnetic resonance coupling. At the same time, it can also be tuned to the same frequency with the transmitting coil to form magnetic resonance coupling.

[0040] In one embodiment, the vascular stent 10 is made of a nickel-titanium alloy. Specifically, the nickel-titanium alloy microsubstrate, based on the superelasticity of its shape memory alloy, can be integrated with existing microelectromechanical systems (MEMS) processes using a welding process to achieve the integrated molding of the vascular stent 10 and the electrode leads, thereby reducing yield problems caused by intermediate welding processes and simplifying the fabrication of the vascular stent 10.

[0041] In this embodiment, the vascular stent 10 can be manufactured by laser cutting, weaving, or other methods.

[0042] In this embodiment, the vascular stent 10 is pushed from the jugular vein to the target area in the brain via a guide tube during a neurointerventional procedure using catheter venography.

[0043] In one embodiment, the vascular stent 10 is provided with a biocompatible coating, and the electrode contacts 20 are connected to the vascular stent 10 through the biocompatible coating. Specifically, the electrode contacts 20 are connected to the vascular stent 10 through the biocompatible coating, which can better adapt to the blood vessel and reduce irritation to surrounding tissues.

[0044] In this embodiment, the biocompatible coating is a biocompatible adhesive, and the electrode is fixed to the support using a biocompatible adhesive (such as a UV-cured adhesive). This adhesive not only ensures stable adhesion of the electrode but also reduces irritation and inflammatory response to surrounding tissues.

[0045] In this embodiment, the flexible electrode and the guide wire 30 for back-end signal extraction are integrated and fabricated using MEMS technology to reduce yield problems caused by intermediate welding processes and simplify the fabrication of the vascular stent 10.

[0046] In one embodiment, the surfaces of both the electrode contact 20 and the guide wire 30 are coated with a biocompatible flexible insulating material layer. Specifically, coating the electrode contact 20 and the guide wire 30 with a biocompatible flexible insulating material layer can improve their stability, conductivity, and service life.

[0047] In this embodiment, only the acquisition contact and the welding solder joint are exposed in the electrode contact 20 and the guide wire 30.

[0048] In this embodiment, the electrode contact 20 is made of platinum (Pt), which gives the electrode contact 20 good biocompatibility and conductivity.

[0049] In one embodiment, the number of electrode contacts 20 is one or more.

[0050] In this embodiment, the number of electrode contacts 20 is between 1 and 64.

[0051] In this embodiment, the guidewire 30 serves to fix and support the flexible electrode, emit signal leads, and push the vascular stent 10 along the catheter during the implantation of the vascular stent 10.

[0052] In one embodiment, such as Figure 1 and 3 As shown, a connector 31 is provided at the end of the guide wire 30 away from the electrode contact 20, and the connector 31 is connected to the signal collection unit 40. Specifically, by connecting the signal collection unit 40 to the connector 31, a stable connection between the guide wire 30 and the connector 31 can be achieved, and the signal collection unit 40 can also be easily disassembled separately.

[0053] In one embodiment, such as Figure 1 As shown, the connector 31 is connected to the signal collection unit 40 via a feedthrough connector composed of several spring-loaded contact points. Specifically, the spring contacts typically have a very long mechanical life, capable of withstanding high-frequency contact and disconnection operations, thus meeting the frequent insertion and removal requirements of the signal collection unit 40. Furthermore, the grid size of the spring contacts is small, resulting in high integration density and reducing the size of the signal collection unit 40.

[0054] In this embodiment, the signal collection unit 40 is a programmable controller, which is implanted under the skin of the chest to collect and preliminarily process the electroencephalogram (EEG) signals collected by the electrode contacts 20.

[0055] In this embodiment, the signal collection unit 40 is further provided with a signal collection module, which is connected to the transmitting antenna. The signal collection module collects signals and wirelessly transmits the collected EEG signals to the outside through the transmitting antenna.

[0056] In one embodiment, the vascular stent electrode system mounting unit 60 is wirelessly connected to the signal collection unit 40 via magnetic attraction and is fixed to the signal collection unit 40 via magnetic attraction.

[0057] In one embodiment, the mounting unit 60 includes a magnetic attractor that is magnetically fixed to the signal collection unit 40, and a transmitting coil is mounted on the mounting unit 60. Specifically, the magnetic attractor of the mounting unit 60 is used to fix it to the skin on the chest, and it is spaced apart from the signal collection unit 40 through the skin on the chest.

[0058] In one embodiment, the electrode system further includes a signal processing unit 70, which includes a receiving antenna and a signal processing module. The receiving antenna is connected to the signal collection unit 40 and is used to receive signals collected by the signal collection unit 40. The signal processing module is connected to the signal collection unit 40 and is used to process the signals collected by the signal collection unit 40. Specifically, the receiving antenna can be wirelessly connected to the antenna of the signal collection unit 40 to wirelessly receive the EEG signals collected by the signal collection unit 40, and the signal processing module can perform preliminary analysis on the signals received by the antenna.

[0059] In this embodiment, the signal processing unit 70 is disposed externally and is wirelessly connected to the signal collection unit 40 via a transmitting antenna.

[0060] In this embodiment, as Figure 1 As shown, the vascular stent electrode system also includes a parsing terminal 80, which is connected to the signal processing unit 70 to perform secondary parsing on the information from the signal processing unit 70.

[0061] In this embodiment, the parsing terminal 80 can be any parsing device capable of signal parsing, such as a computer or mobile device.

[0062] Understandably, the signal from the signal processing unit 70 can be transmitted to the parsing terminal 80 via wired or wireless Bluetooth transmission methods.

[0063] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A vascular stent electrode system, comprising: The application relates to a vascular stent electrode system. The vascular stent electrode system comprises an electrode contact connected to the vascular stent, a guide wire connected to the electrode contact, a signal collection unit connected to the guide wire, a transmitting antenna arranged on the signal collection unit and used for wireless transmission between the signal collection unit and an upper computer, and a receiving coil electrically connected to the signal collection unit and used for cooperating with a magnetic field to form an electric current to supply power to the signal collection unit. The vascular stent electrode system further comprises a power supply unit and a transmitting coil, the transmitting coil is coupled to the receiving coil, and the power supply unit is connected to the transmitting coil to supply power to the transmitting coil. The vascular stent electrode system comprises a mounting unit, the mounting unit comprises a magnetic attraction element, the magnetic attraction element is magnetically attracted and fixed to the signal collection unit, and the transmitting coil is arranged on the mounting unit. The vascular stent electrode system further comprises a signal processing unit, the signal processing unit comprises a receiving antenna and a signal processing module, the receiving antenna is connected to the signal collection unit to receive signals collected by the signal collection unit, and the signal processing module is connected to the signal collection unit to process the signals collected by the signal collection unit. The vascular stent is made of a biocompatible material, namely a nickel-titanium alloy. The vascular stent is provided with a biocompatible coating, and the electrode contact is connected to the vascular stent through the biocompatible coating.

2. The vascular stent electrode system of claim 1, wherein, The surfaces of the electrode contact and the guide wire are wrapped with a layer of biocompatible flexible insulating material.

3. The vascular stent electrode system of claim 2, wherein, The number of the electrode contact is one or more.

4. The vascular stent electrode system of claim 1, wherein, The guide wire is provided with a plug-in part at an end far away from the electrode contact, and the plug-in part is plugged into the signal collection unit.

5. The vascular stent electrode system of any one of claims 1-4, wherein, The plug-in part is plugged into the signal collection unit through a feedthrough connector composed of a plurality of spring contact points.

6. The vascular stent electrode system of any one of claims 1-4, wherein, ​ 7. The vascular stent electrode system of any one of claims 1-4, wherein, ​ 8. The vascular stent electrode system of any one of claims 1-4, wherein, ​ 9. The vascular stent electrode system of any one of claims 1-4, wherein, ​ 10. The vascular stent electrode system of claim 9, wherein, ​

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