86 results about "Implantable Electrodes" patented technology

The invention discloses a magnetic resonance compatible implantable electrode wire with a shunt head end structure and medical equipment. An electrode head section comprises a spiral electrode electrically connected with an inner wire body and a ring electrode electrically connected with an outer wire body; the spiral electrode and the ring electrode transmit an electric signal sent by the implanted medical device to a targeted treatment part to be electrically stimulated; the spiral electrode comprises a spiral structure; the spiral structure is a multi-turn equidistant spiral structure, and under the action of a high-frequency energy field, the spiral structure can serve as a series inductor to generate large impedance so as to reduce induction current flowing to the spiral electrode and human tissue, and therefore electrode heating is reduced. The structure of the electrode tip section is improved, and the problems that electromagnetic field energy is coupled, eddy current and induction current are formed, induction heating is generated, and even wrong electric pulse signals are transmitted to a human body on the implantable medical device, so that adverse effects are generated on the safety of a patient are effectively solved.

The invention provides an electroencephalogram synchronous acquisition system compatible with nuclear magnetic resonance. The problem of interference of traditional equipment in a strong magnetic field environment is solved through innovative material selection and structural design. According to the system, a platinum-iridium alloy multi-contact implantable electrode probe is adopted and is matched with a nuclear magnetism compatible electrode wire formed by a silver-plated copper wire core body and a silver-plated nylon shielding layer, so that indoor and outdoor long-distance signal transmission of MRI (Magnetic Resonance Imaging) is realized. The signal acquisition and processing unit integrates a non-magnetic ceramic packaging pre-amplifier and an optical fiber isolation transmission data acquisition card, and is matched with a fan-free design computer, so that the influence of a magnetic field on signal processing is thoroughly avoided. According to the scheme, real-time electroencephalogram monitoring in experimental animal task state functional nuclear magnetism is supported, experiments prove that the signal-to-noise ratio is reduced by 30% or above, the distortion rate is controlled to be 2% or below, the advantages of high biocompatibility, low cost and operability are achieved, and the accuracy and reliability of scientific research data collection are remarkably improved.

The utility model relates to the technical field of nerve stimulation, and discloses an electrode contact, an implantable electrode and a nerve stimulation system. The electrode contact comprises a plurality of contact surfaces, each contact surface can independently serve as a stimulation source, and at least two contact surfaces in the plurality of contact surfaces face different directions, so that the electrode contact has a plurality of stimulation directions. According to the electrode contact scheme provided by the embodiment of the utility model, more stimulation directions can be provided, and the effectiveness and accuracy of nerve stimulation can be improved.

Tumor treating fields (TTFields) can be delivered by implanting a plurality of sets of implantable electrode elements within a person's body. Temperature sensors positioned to measure the temperature at the electrode elements are also implanted, along with a circuit that collects temperature measurements from the temperature sensors. In some embodiments, an AC voltage generator configured to apply an AC voltage across the plurality of sets of electrode elements is also implanted within the person's body.

An introducing device for locating a tissue region and deploying an electrode is shown and described. The introducing device may include an outer sheath. An inner sheath may be disposed within the outer sheath. The inner sheath may be configured to engage an implantable electrode. In an example, the inner sheath may comprise a stimulation probe having an uninsulated portion at or near a distal end of the delivery sheath. The outer sheath may be coupled to a power source or stimulation signal generating circuitry at a proximal end. A clinician may control application of the stimulation signal to a tissue region via the outer sheath.

Electrical stimulation devices can be used to treat tinnitus. For example, tinnitus can be treated using implantable electrodes and stimulation devices for delivering electrical stimulation to a patient's cochlear region, such as the cochlear promontory. Intraosseous cochlear promontory electrode(s), endosteal electrode(s), subendosteal electrode(s), or short intracochlear electrode(s) (or a combination thereof), connected to a cochlear implant receiver / stimulator device, can provide a successful model for long-term treatment of tinnitus in a large number of patients. In some cases, patients can simply turn on the tinnitus implant when experiencing troublesome tinnitus and gain instant relief.

The embodiment of the invention discloses a testing device. The testing device comprises a cable, a connecting assembly and a stimulating assembly which are connected in sequence. Wherein the connecting assembly is provided with a limiting groove for limiting and fixing the implantable electrode, a plurality of conductive elastic sheets in conductive connection with the cable are arranged in the limiting groove, and the conductive elastic sheets are used for being detachably and electrically connected with a wire of the implantable electrode, so that the implanted implantable electrode is tested. The stimulation assembly is provided with a conductive probe electrically connected with the cable, and can apply a test electric signal to the nervous tissue to carry out a stimulation reaction test, thereby assisting in accurately confirming the position of the target spot. According to the testing device, the electrode testing function and the nerve stimulation testing function are integrated into a single device, the structure is compact, operation is visual, and the accuracy, smoothness and convenience of an operation are remarkably improved.

The utility model provides a connector, an implantable electrode piece using the connector, an electrode assembly and an implantation device, the connector is used for being connected with the implantable electrode piece and comprises an insulation main body and a conductive terminal connected with the insulation main body; the conductive terminals extend along a first direction and are connected with the insulating main body, so that the electrode piece can be vertically connected with the conductive terminals along a second direction, and the first direction is different from the second direction. According to the connector, the implantable electrode piece using the connector, the electrode assembly and the implantation device, the circuit stability can be effectively improved, and the service life of the electrode is prolonged.

The application provides a connector, an implantable electrode member using the connector, an electrode assembly, an implantable device and a preparation method thereof. The connector is used for connecting with an implantable electrode member and comprises an insulating body and a conductive terminal connected with the insulating body. The conductive terminal extends along a first direction and is connected with the insulating body, so that the electrode member can be connected with the conductive terminal in a vertical type along a second direction, and the first direction is different from the second direction. The connector, the implantable electrode member using the connector, the electrode assembly, the implantable device and the preparation method thereof can effectively improve circuit stability and prolong the service life of the electrode.

This utility model relates to the field of medical devices, and more particularly to an MRI-compatible implantable electrode lead and implantable medical device. The implantable electrode lead includes: a conductive core, which may be single-core or multi-core; an insulating layer covering the conductive core; and a shielding layer covering or embedded within the insulating layer. The shielding layer has a mesh structure and is braided from conductive wires with curved sections. This utility model provides a mesh shielding layer made of a biocompatible, electrically conductive material outside the implantable electrode lead. This shielding layer can shield magnetic fields to prevent the internally protected conductive core from overheating, thereby ensuring the safety of the implantable electrode lead during MRI scanning. Furthermore, the shielding layer has a certain degree of elasticity to accommodate the elastic conductor core.

1. The name of the design product: implantable electrode device. 2. The use of the design product: the design product is used for intracranial tumor electric field therapy. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. The rear view is the same as the front view, and the rear view is omitted; the left view is the same as the front view, and the left view is omitted; the right view is the same as the front view, and the right view is omitted.

The present invention relates to a deep brain electrical stimulation system, and more particularly to a neural electrical stimulation system capable of being equipped with multiple electrodes, comprising a pulse generator, an extension wire, an electrode, and a fixing device, wherein the pulse generator is a multi-channel, multi-contact pulse generator, the extension wire is connected to the multi-channel, multi-contact pulse generator via contacts, the electrode is connected to the extension wire, and the fixing device is used to fix the electrode during use. The electrical stimulation system of the present invention can adjust the matching relationship between the number of pulse contacts and the number of electrodes according to the requirements of system precision, thereby achieving multi-channel, multi-pulse electrical stimulation output; the present invention also adjusts the structure of the extension wire so that, while the number of pulse contacts remains unchanged, more electrodes can be added as needed, thereby meeting the requirements of more complex electrode stimulation.

The invention discloses a magnetic resonance compatible implantable electrode wire with an artifact weakening structure and medical equipment, an electrode tip section of the electrode wire is provided with a ring electrode, and one end, far away from a spiral electrode, of an outer wire body is nested on the outer peripheral wall of an outer wire body supporting section of the ring electrode; an inner hole of a contact ring of the ring electrode is fixed with the outer wall of the position, far away from the spiral electrode, of the electrode insulating part, so that an integral insulating structure of the ring electrode and the outer wire body to the internal conductor is formed; the position of the electrode insulator close to the spiral electrode is fixed with the inner hole surface of the rear section of the electrode sleeve; a medicine plug is arranged at the position, close to the spiral electrode, of the electrode sleeve; the ring electrode is provided with a hollow thin wall, and magnetic flux holes distributed in the circumferential direction and / or the axial direction of the ring electrode are formed in the ring electrode. The magnetic flux holes are formed in the ring electrode or other metal parts, the overall artifact area of the metal part is reduced, self heating of the metal part is reduced, and meanwhile the heat dissipation effect of the wire is enhanced through the magnetic flux holes.

An implantable medical device includes a plurality of implantable electrodes for sensing and pacing a heart of a patient. The plurality of electrodes includes cardiac conduction system electrodes positionable proximate a portion of a cardiac conduction system of a patient. A computing device includes processing circuitry and is operably coupled to a plurality of implantable electrodes. A computing device monitors a precardiac ejection (HS-PEP) of a heart of a patient. A change in the HS-PEP is determined based on the monitoring. A change in HS-PEP is determined to be greater than or equal to a specified threshold. Delivery of cardiac conduction system pacing therapy to the cardiac conduction system of the patient using the cardiac conduction system electrode is initiated based on the HS-PEP being greater than or equal to a specified threshold.

An introducing device for locating a tissue region and deploying an electrode is shown and described. The introducing device may include an outer sheath. An inner sheath may be disposed within the outer sheath. The inner sheath may be configured to engage an implantable electrode. In an example, the inner sheath may comprise a stimulation probe having an uninsulated portion at or near a distal end of the delivery sheath. The outer sheath may be coupled to a power source or stimulation signal generating circuitry at a proximal end. A clinician may control application of the stimulation signal to a tissue region via the outer sheath.

Presented herein is an electroporation shield configured to be removably coupled to an implantable stimulating assembly that includes one or more stimulation electrodes. The electroporation shield is coupled to stimulating assembly such that the electroporation shield electrically insulates the one or more of the stimulation electrodes from an electroporation electrical field generated by one or more electroporation electrodes coupled to the electroporation shield. The electroporation shield may be coupled to the stimulating assembly in a manner that facilitates removal of the electroporation shield and the one or more electroporation electrodes. After electroporation, without having to remove or reinsert the stimulating assembly, thereby exposing the one or more stimulation electrodes to the cells of the recipient for subsequent delivery of stimulation.

The application belongs to the technical field of neuroelectrophysiology and brain stereotaxy, and provides an implantable electrode pushing and protecting device. The device is provided with a separable electrode protecting assembly and a base assembly fixed on the skull. The electrode does not need to be preformed before leaving the factory, and the electrode can be flexibly driven or replaced in the operation of the electrode protecting assembly without involving the base assembly in contact with the skull. The adjustment and use of the implanted electrode are more flexible and convenient.

An implantable medical device includes processing circuitry, the computing apparatus configured to communicate with a plurality of implantable electrodes to sense and pace a patient's heart. The plurality of electrodes include a conduction system pacing electrode positioned in a myocardium of the patient's heart. The computing apparatus is configured to monitor local muscle impedance of the patient's heart using the cardiac conduction system electrode and adapt cardiac therapy deliverable by the implantable device based on the local muscle impedance.

The utility model discloses an implantable electrode lead and a nerve stimulation system, and the implantable electrode lead comprises an implantation section implanted in a skull, a connection section connected with the implantation section, and a flexible supporting member. The flexible supporting piece is installed in the connecting section and supports the connecting section in the radial direction of the implantable electrode wire so as to prevent the connecting section from being pressed and deformed, and the flexible supporting piece and the connecting section can be bent synchronously. The implantable electrode lead and the nerve stimulation system are used for preventing the guide wire element from being pressed and deformed, and the service life of the implantable electrode lead is prolonged.

The present invention relates to a deep sEEG electrode for brain intracranial neuronal electrical stimulation, the electrode comprising a temperature sensor to protect brain tissue from undesired local temperature increase due to sustained / chronic intracranial neuronal electrical stimulation, and further comprising a humidity sensor to detect a deviation from a baseline liquid volume and / or pressure value in brain parenchyma. In the stimulation process through the electrode, if one or more temperature values rise to exceed a preset safety limit value, the nerve stimulation / sEEG device can immediately interrupt the ongoing nerve stimulation to protect brain tissue from adverse heat side effects. The detected fluid volume and / or pressure values may be transmitted to a neurostimulation / sEEG device that presents data to a physician / neurosurgeon responsible for sEEG operations for assessing whether the implantable electrode is located at a predetermined location, or partially / fully located in the cerebrospinal fluid space within or outside of the brain parenchyma, and assessing the risk of intracranial bleeding.

The application provides an implantable electrode and an electric field treatment device for intracranial tumor treatment. The implantable electrode for intracranial tumor treatment comprises a flexible electrode, the flexible electrode comprises a flexible base layer and at least one electrode unit arranged on the flexible base layer, at least one end of the flexible base layer is not covered by the electrode unit, and an extension section is formed at the part of the flexible base layer not covered by the electrode unit. The electric field treatment device comprises a control module and the implantable electrode, the control module and the flexible electrode of the implantable electrode are electrically connected to generate an alternating electric field. The flexible electrode can be attached to the surface of a tumor cavity by surface adhesion, and the extension section can extend out of the tumor cavity and be attached to the surface of brain tissue, so that the flexible electrode can be stably fixed in the body. Therefore, the targeting of tumor electric field treatment can be obviously improved, the stability of the electric field in the related area can be improved, the compliance of the patient can be improved, adverse reactions can be reduced, and the treatment effect can be improved as a whole.

To provide a method for producing an implantable electrode device.SOLUTION: In a method for producing an implantable electrode device, an electrically insulating support 14 and at least one electrically conductive electrode element 12 are provided to attach the at least one electrode element 12 to the support 14. To attach the at least one electrode element 12 to the support 14, the at least one electrode element 12 and / or the support 14 are heated, and the at least one electrode element 12 is pressed against the support 14.SELECTED DRAWING: Figure 4B

The utility model discloses an implantable electrode lead and a nerve stimulation system, and the implantable electrode lead comprises an implantation section implanted into the cranium, an extension section connected with the implantation section, an accommodation channel, and a supporting member. The accommodating channel extends from the extension section to the front end of the implantation section but does not penetrate through the front end of the implantation section; the supporting piece is arranged in the containing channel, and the rigidity of the supporting piece comprises at least two kinds. The electrode lead and the nerve stimulation system are used for simplifying the implantation operation of the implantable electrode lead, improving the deformation resistance of the electrode lead, and further prolonging the use and accommodation of the implantable electrode lead.

The present invention provides a universal connector for implanted electrodes, a device and an injection voltage testing device. The universal connector for implanted electrodes includes a plurality of conductive terminals. When a columnar implanted electrode is installed in the universal connector, some of the conductive terminals will contact the electrode contacts to achieve electrical connection. Since each conductive terminal is connected to a connecting wire, and the other end of the connecting wire is set as a free end, the tester can connect the connecting wires of all the conductive terminals connected to the same electrode contact to the same test channel to achieve the test of the electrode contact. Due to the different specifications of the columnar implanted electrodes, the conductive terminals that achieve electrical connection with the electrode contacts are also different. In order to achieve the universality of the connection of different specifications of implanted electrodes, the tester can adjust the connection of each connecting wire to the test channel according to the contact situation between the conductive terminal and the electrode contact.

The application relates to an FPGA-based implantable electrode Spike signal detection system and method, which uses FPGA to collect brain electrical data signals transmitted by an implantable electrode chip, carries out filtering processing and automatic threshold feature extraction on the collected brain electrical data, completes the Spike extraction task, and sends the processed brain electrical data and the original data to an upper computer through a PCI-E mode. Compared with the prior art, the application adopts FPGA parallel processing data, integrates the Spike signal detection method on the FPGA, greatly reduces the real-time detection speed of the Spike, adopts a filter to pre-process the brain electrical data, can effectively retain Spike effective signals, adopts an automatic threshold feature extraction method, can adaptively extract Spike signals according to brain electrical signal fluctuations, not only reduces the power consumption of the chip, but also guarantees the accuracy of Spike signal extraction.

Systems and methods for ambulatory detection of Q wave-to-T wave (QT) interval prolongation are discussed. A medical-device system comprises a controller circuit and a user interface device. The controller circuit includes a long QT syndrome (LQTS) detector that measures a QT interval from a subcutaneous cardiac signal sensed from a patient using implantable electrodes, and detects an indication of QT prolongation using the measured QT time interval and a programmable threshold received as a user input from the user interface. The control circuit can adjust device operation based on the detected indication of QT prolongation. An output unit can generate a programmable alert of the QT prolongation corresponding to the user input of the programmable threshold.

The current invention relates to a flexible electrode comprising a porous flexible substrate material having a first surface and a second surface diametrically opposed to the first surface; at least one through hole in the porous flexible substrate material, where the at least one through hole extends from the first surface to the second surface, the at least one through hole having an internal surface; a conductive material attached to the first and second surfaces of the porous flexible substrate material, wherein: the at least one through hole is formed such that a first entry hole, having a first entry hole diameter, in the first surface has a larger diameter than a corresponding second entry hole in the second surface, or vice versa, such that the internal surface of the through hole is tapered; the conductive material is also attached to the internal surface of the at least one through hole to provide a continuous conductive film attached to the first and second surfaces, where the first and second surfaces are conductively connected by the conductive material in the at least one through hole; and the conductive material penetrates into the porous flexible substrate to form a mechanical interlock between the conductive material and the porous flexible substrate.

The embodiment of the invention discloses an electrode type judgment method and device, electronic equipment and a storage medium. The method comprises the following steps: in response to a current electrode type input operation of a user on a user interface for an implantable electrode, triggering an impedance measurement operation between contact combinations in the implantable electrode; when the impedance measurement operation is executed, obtaining a current electrode type of the implantable electrode input by the user in the user interface and a current impedance measurement result of the impedance measurement operation; determining a current impedance distribution characteristic corresponding to the current electrode type based on an incidence relation between a preset electrode type and the impedance distribution characteristic and the current electrode type; and determining a current judgment result of the current electrode type based on a preset judgment rule, the current impedance distribution characteristic and the current impedance measurement result. According to the technical scheme of the embodiment of the invention, the accuracy of the electrode type of the implantable electrode can be accurately and conveniently judged, so that a wrong electrode type input by a user can be corrected.

A signal generator (100) for a neurological stimulation system includes a signal generation module (110) connectable to a plurality of implantable electrodes (11-18; 21-28) and configured to provide electrical signals to the plurality of implantable electrodes (11-18; 21-28) for neurological stimulation. The signal generator further includes controller (120) configured to operate the signal generation module (110). The controller (120) is configured to automatically change a stimulation parameter used in stimulation therapy at time intervals or at a trigger.

A system may include a signal generator configured to be in electrical communication with at least one implantable electrode. A system may include a controller configured in electrical communication with the signal generator, wherein the controller is configured to cause the signal generator to generate a first electrical signal configured to cause partial or full block of action potential conduction and / or initiation in an off-target neural component of a first target electrically excitable tissue. The controller may be further configured to cause the signal generator to generate a second electrical signal having a shorter pulse width than the first electrical signal. The second electrical signal can be configured to activate an on-target neural component of a second target electrically excitable tissue.