A multi-electrode array device (1) comprises a substrate (10) having a substrate body (100), and a multiplicity of electrodes formed by a multiplicity of needle elements (120) arranged on said substrate body (100) and spaced with respect to each other along a plane (P). The needle elements (120) are formed from a metal layer (12) arranged on said substrate body (100), each needle element (120) comprising a contact section (121) extending along said plane (P) and a needle section (122) extending from said contact section (121) and having a tip (123), wherein said needle section (122) is bent with respect to said contact section (121) such that the needle section (122) with its tip (123) protrudes from said plane (P).

A multi-electrode array device (1) comprises a substrate (10) having a substrate body (100), and a multiplicity of electrodes formed by a multiplicity of needle elements (120) arranged on said substrate body (100) and spaced with respect to each other along a plane (P). The needle elements (120) are formed from a metal layer (12) arranged on said substrate body (100), each needle element (120) comprising a contact section (121) extending along said plane (P) and a needle section (122) extending from said contact section (121) and having a tip (123), wherein said needle section (122) is bent with respect to said contact section (121) such that the needle section (122) with its tip (123) protrudes from said plane (P).

A head stage designed for non-surgical placement of EEG electrodes in small animals is disclosed. The head stage is connected to thin barbed pin electrodes of multiple lengths, such that they can be placed into the brain at the chosen depth. A miniature device comprising a wireless transmitter or data logger can be attached using magnets or connectors to the stage. When the head stage is placed on the head of a small animal and pressure is applied on the stage, the set of pin electrodes penetrate the skull, such that the stage becomes firmly fixed to the skull. Further, the device includes electrodes on its body that eliminate the need of wires for EEG recordings. When the capsule including sharp electrodes is pressed toward the skull, the electrodes penetrate the bone and fixes the capsule onto the skull for recording biopotential signals from the brain.

A head stage designed for non-surgical placement of EEG electrodes in small animals is disclosed. The head stage is connected to thin barbed pin electrodes of multiple lengths, such that they can be placed into the brain at the chosen depth. A miniature device comprising a wireless transmitter or data logger can be attached using magnets or connectors to the stage. When the head stage is placed on the head of a small animal and pressure is applied on the stage, the set of pin electrodes penetrate the skull, such that the stage becomes firmly fixed to the skull. Further, the device includes electrodes on its body that eliminate the need of wires for EEG recordings. When the capsule including sharp electrodes is pressed toward the skull, the electrodes penetrate the bone and fixes the capsule onto the skull for recording biopotential signals from the brain.

Disclosed herein are novel 3D microelectrode arrays (3D MEA) that include a substrate body (e.g. chip), microneedles, traces, and a well, wherein the 3D MEA provides for transfer of electrical signals on one side of the substrate body to the other side of the substrate body. Methods for using 3D MEAs to grow electrogenic cells and obtain electrophysiological signals are disclosed as well. Fabrication techniques for producing the 3D MEAs are also disclosed.

A substantially planar neural electrode array includes a flexible base, a connector cable attached to the base, one or more flexible shafts protruding from the base. The shafts are arranged to protrude in the same plane from the same surface of the base to form a comb-like structure. Each of the one or more shafts includes one or more electrode contacts. The electrode contacts are electrically coupled to the connector cable. A first reinforcement layer extends over the base and a proximal part of the one or more shafts. The proximal part is adjacent to the base; a second resorbable reinforcement layer extends over a distal part of the one or more shafts. The distal part is distant from the base. There is an overlap between the first reinforcement layer and the second resorbable reinforcement layer.

A substantially planar neural electrode array includes a flexible base, a connector cable attached to the base, one or more flexible shafts protruding from the base. The shafts are arranged to protrude in the same plane from the same surface of the base to form a comb-like structure. Each of the one or more shafts includes one or more electrode contacts. The electrode contacts are electrically coupled to the connector cable. A first reinforcement layer extends over the base and a proximal part of the one or more shafts. The proximal part is adjacent to the base; a second resorbable reinforcement layer extends over a distal part of the one or more shafts. The distal part is distant from the base. There is an overlap between the first reinforcement layer and the second resorbable reinforcement layer.

An automatic tattoo apparatus can be used to robotically apply tattoos. A customer can shop on an online tattoo marketplace to select designs created by various artists located anywhere. The online tattoo marketplace can process and manage payments, artist and/or customer profiles, bookings, tattoo design uploads, browsing and design selection, design changes, and/or perform other actions. The automatic tattoo device can apply tattoos precisely, quickly, and may with reduced pain. The tattoo apparatus can apply a wide range of different types of tattoos, including but not limited to micro tattoos, dotwork, blackwork tattoos, realism tattoos, fine-line tattoos, etc.

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.

A sensor array comprises a base for providing a probe signal and a plurality of modular recording sites. Each modular recording site of the plurality of modular recording sites is configured for receiving a signal, for converting the signal into a digital sensor signal using an in-situ analog-to-digital converter and to provide the digital sensor signal to the base using a communication interface. The communication interfaces of the plurality of modular recording sites are connected serially with respect to each other and to the base and each in-situ analog-to-digital converter is configured for operating in a first operating mode and in a second operating mode. The base is configured for receiving a plurality of digital sensor signals from the plurality of modular recording sites and to process the plurality of digital sensor signals so as to provide the probe signal.