19 results about "Implant electrode" patented technology

A method and system for protecting electrode arrays while implanted on a brain including a flexible electrode array including non-penetrating cortical surface microelectrodes, a ceramic layer covering the electrode array and a polymer layer adjacent the ceramic layer, wherein the ceramic layer and the polymer layer hermetically seal the electrode array. The ceramic layer can be configured to exhibit sufficient flexibility to allow the electrode array to be implanted using minimally invasive surgical techniques, while still hermetically sealing the electrode array from a biological environment.

Presented is a system and method for implanting a flexible electrode array in a biological organ. The system includes an electrode implant tool that includes an elongate rod and an electrode implant assembly having a plurality of attachment members. The electrode implant assembly further includes a ring member connected to each of the attachment members. A variable magnetic field generator is arranged in the ring member. The system uses electromagnetic force to temporarily strengthen the flexible electrodes allowing the penetration into the brain.

In an electrostatic chuck which electrostatically adsorbs and fixes a workpiece placed on a placement surface by applying a voltage to an electrode implanted therein, the placement surface has a concavo-convex structure comprising a plurality of convex portions two-dimensionally spaced apart from each other at a predetermined pitch and flat concave portions between the convex portions, and the convex portions comprise: flat portions; the substrate is provided with a flat surface which is vertical to the thickness direction of the electrostatic chuck and is uniform in height; and an inclined portion located around the flat portion, the height of the inclined portion decreasing from the flat portion toward the recessed portion, and the inclination angle of the upper surface of the inclined portion with respect to the thickness direction of the electrostatic chuck being 65-84 degrees.

A patient-specific frequency mapping procedure, a fitting system for carrying out said procedure and computer program product for a cochlear implant or an electric-acoustic stimulation device having an electrode array that has been implanted into the cochlea of said patient is disclosed.

The invention relates to the technical field of metal material preparation, in particular to a tantalum-tungsten-based nano composite target material and a preparation method thereof. The method comprises the following steps: smelting a high-purity tantalum block and a high-purity tungsten block, and casting to obtain a tantalum-tungsten prealloy cast ingot; the tantalum-tungsten pre-alloy cast ingot is subjected to atomization powder making, and Ta-W alloy powder is obtained; the Ta-W alloy powder is mixed with a nano carbon material, and TaW-C mixed powder is obtained; and the TaW-C mixed powder is subjected to magnetic field assisted sintering, grain oriented growth is induced, aftertreatment is conducted, and the tantalum-tungsten-based nano composite target material is obtained. The magnetic field assisted sintering adopts a one-way static magnetic field along the direction vertical to the target surface, and the magnetic field intensity is 2-10T. According to the preparation method, the Ta-W-based nano composite target material with high density, uniform tissue and texture orientation can be prepared, and the deposited film has the characteristics of low stress, high flexibility and the like, and meets the use requirements of a flexible implanted electrode.

Disclosed is a neural stimulation system comprising: an implantable device for controllably delivering neural stimuli, and a processor. The device comprises: a pulse generator configured to deliver neural stimuli via one or more stimulus electrode configurations (SECs), each SEC comprising one or more stimulation electrodes of an implanted electrode array, to a neural pathway of a patient, the neural stimuli being configured to evoke neural responses from the neural pathway; and a control unit configured to control the pulse generator to deliver neural stimuli via an SEC of the one or more SECs. The processor is configured to: select, from a predetermined ranked list of possible SECs associated with a predetermined first location on the electrode array, the first possible SEC in rank order that does not contain an unusable electrode; and instruct the control unit to control the pulse generator to deliver the neural stimuli via the selected SEC.

The application provides a multi-conducting elastic implant electrode and a preparation method thereof. The multi-conducting elastic implant electrode comprises an electrode body, the electrode body comprises a plurality of electrode segments, each electrode segment comprises an electrode ring, a clamping column and a connecting column, the electrode ring is sleeved outside the connecting column, the plurality of electrode segments are arranged, the clamping column and the connecting column are sequentially and alternately arranged and fixedly connected, two adjacent clamping columns clamp the electrode ring, and the electrode ring and the clamping column are in sealed arrangement; the clamping column is provided with a through hole penetrating through two end surfaces; each electrode ring is electrically connected with a wire, free ends of the wires pass through the through hole and are located on the same side of the electrode body. The application can improve the flexibility of the implant electrode as a whole and can effectively improve the adaptability of the product implanted in the body.

The invention discloses a device for acquiring a bio-electricity signal and equipment for acquiring the bio-electricity signal, which are used for implanting an electrode under an epidermal layer to acquire the bio-electricity signal. According to the technical scheme, the device for obtaining the bio-electricity signals comprises an implanted electrode, a power supply, a data output unit and a control circuit, the implanted electrode comprises a first electrode and a second electrode which can collect the bio-electricity signals, the first electrode and the second electrode are connected in an insulated mode, and the power supply is connected with the data output unit. The power supply can provide electric energy for the first electrode, the second electrode, the data output unit and the control circuit, the control circuit is suitable for processing bio-electricity signals collected by the first electrode and the second electrode, and the data output unit is suitable for wirelessly transmitting the processed bio-electricity signals to the outside.

The invention discloses a flexible implantable electrode and a preparation method thereof, and a detection system. The flexible implantable electrode comprises a flexible substrate; the graphitization-like carbon film is located on the flexible substrate, the graphitization-like carbon film is provided with a working electrode pattern, a reference electrode pattern and a counter electrode pattern, and the graphitization-like carbon film is formed by pre-mixing graphene oxide and a polymer precursor and then coating the mixture on the first substrate for carbonization reaction; the catalyst layer is positioned on the working electrode pattern; the enzyme recognition layer is positioned on the catalytic layer; the selective membrane is positioned on the enzyme recognition layer; the ink layer is positioned on the reference electrode pattern; and the salt bridge film layer is positioned on the ink layer. The flexible implantable electrode disclosed by the invention has good biocompatibility, long-term stability, mechanical flexibility and implantation adaptability; the thickness and the structure uniformity are good, and large-scale preparation is facilitated.

The present invention relates to an electrode, which is an in vivo insertable electrode, including a substrate, an electrically conductive layer formed on the substrate, a platinum black layer formed on the electrically conductive layer, a self-assembled monolayer (SAM) formed on the platinum black layer, and a lubricant layer formed on the SAM, a method of manufacturing the electrode, and a medical device including the electrode. The in vivo insertable electrode according to the present invention provides excellent electrical properties such as low impedance. Further, it shows that friction with tissue occurring when the electrode is inserted is reduced, and trauma during insertion and an immune rejection response after insertion is suppressed. Further, in the long term, it is possible to detect signals with high sensitivity throughout the entire period by preventing bioadhesion of in vivo cells, such as immune cells, and other proteins.

An apparatus includes at least one electrical conduit extending along a longitudinal axis and at least one electrode. The at least one electrode includes a portion configured to be in electrical communication with a portion of tissue and / or bodily fluid of a recipient. The at least one electrode further includes a flexure affixed to and in electrical communication with the at least one electrical conduit. The portion and the flexure are unitary with one another. The flexure is configured to flex in response to compressive and / or tensile forces applied to either the at least one electrical conduit or the at least one electrode

A method and system for protecting electrode arrays while implanted on a brain including a flexible electrode array including non-penetrating cortical surface microelectrodes, a ceramic layer covering the electrode array and a polymer layer adjacent the ceramic layer, wherein the ceramic layer and the polymer layer hermetically seal the electrode array. The ceramic layer can be configured to exhibit sufficient flexibility to allow the electrode array to be implanted using minimally invasive surgical techniques, while still hermetically sealing the electrode array from a biological environment.

In one embodiment, a device includes a housing configured to be implanted on or within a body of a recipient; and at least one chamber within the housing, the at least one chamber configured to contain a fluid. The apparatus further includes at least one barrier configured to separate the at least one chamber from tissue and / or body fluid of the recipient. The at least one barrier is configured to allow electrical charges, electrons, ions, and / or predetermined molecules to be delivered through the at least one barrier and to prevent at least one organic species from the tissue and / or body fluid from being delivered into the at least one chamber. The device also includes at least one electrode within the housing and spaced apart from the at least one barrier. The at least one electrode is configured to be in electrical communication with fluid within the at least one chamber.

The present disclosure relates to a system for assisting in implanting an electrode wire, comprising: an electrode wire fixing apparatus; a guide needle fixing apparatus; a movement mechanism; a first camera, arranged on a first side of a plane and towards a metal part, the first camera having a first optical path; a second camera, arranged on the first side of the plane and towards the metal part, the second camera having a second optical path at an angle to the first optical path; and a processing apparatus, configured to identify a relative position of the end of a guide needle to a through hole based on images shot by the first camera and the second camera, and control the movement mechanism to drive the electrode wire fixing apparatus and / or the guide needle fixing apparatus to move, so that the end of the guide needle is aligned with the through hole. The present disclosure further relates to a method for guiding an electrode wire.

The present disclosure relates to a flexible electrode and a manufacturing method therefor. Provided is a flexible electrode, comprising at least one implantable and flexible electrode wire and a continuous limiting layer. Each electrode wire comprises: a wire, the wire being located between a first insulating layer and a second insulating layer of the flexible electrode, and an electrode site, the electrode site being in contact with the biological tissue after implantation of the electrode wire, being located on the first insulating layer, and being electrically coupled to the wire by means of a through hole in the first insulating layer. The limiting layer is located on the at least one electrode wire and is configured to be detachably adhered to the at least one electrode wire, so that the at least one electrode wire is kept in a fixed arrangement during the implantation process.

The invention relates to the technical field of underground packers, and particularly discloses a sealing ring body manufacturing method based on a self-expanding material, which comprises the following steps of: performing mould pressing on a hydrated expanding metal material to form a sealing ring body mould pressing part capable of hydrating and expanding, and forming a threading channel in the sealing ring body mould pressing part; sintering the plurality of sealing ring body molded parts to form an integrated sealing ring body fusion part; vulcanizing the rubber material on the surface of the sealing ring body fusion piece to form an elastic protection layer; an electrode is implanted into the sealing ring body molded part or the sealing ring body fusion part, and the expansion metal material can react with well fluid to form a primary battery through the electrode. The method overcomes the defects that a traditional packer is poor in machinability, complex in process, high in cost, poor in adaptability and the like, solves the problem that the setting condition is inconvenient to detect due to the fact that underground electric equipment is inconvenient to connect with electricity, and improves the energy utilization rate of the self-expanding material.

This article discusses a neurostimulation device for monitoring electrical neural activity when connected to an implantable electrode. The neurostimulation device includes sensing circuitry and signal processing circuitry. The sensing circuitry is configured to sense a patient's local field potential (LFP) signal when connected to the implantable electrode, and the signal processing circuitry is operatively coupled to the sensing circuitry. The signal processing circuitry is configured to calculate the power spectral density (PSD) of the sensed LFP signal, calculate the slope of the PSD of the sensed LFP signal, and use the calculated slope of the PSD of the sensed LFP signal to determine the patient's physiological state.

An implantable electrical stimulation (IES) system and a method thereof, is disclosed. The implantable electrical stimulation (IES) system may comprise an implantable electrode array having a plurality of electrode contacts, an electrical stimulus means, a sensor and a processing circuitry. The electrical stimulus means may be configured for applying the electrical stimulus to at least one stimulating electrode contact of the implantable electrode array. The sensor may be configured for sensing and determining a measured ECAP of the at least one stimulating electrode to generate data for determining a plurality of parameters for the at least one stimulating electrode of the implantable electrode array. The processing circuitry may be configured for processing the measured ECAP and plurality of parameters of the at least one stimulating electrode of the implantable electrode array to compute the corresponding parameters for the remaining electrode contacts of the implantable electrode array.