Systems and methods for wireless stimulation of biological tissue (e.g. nerves, muscle tissue, etc.) and, in one exemplary implementation, to therapy for glaucoma based on the wireless administration of energy to the eye of a mammalian subject (e.g. human, rodent, etc.) to reduce an elevated intraocular pressure (IOP) involving the use of a multi-coil wireless power transfer assembly. The multi-coil wireless power transfer assembly may be used alone or in combination with a stimulation coil that can be implanted in the eye of a mammalian subject or within a contact lens worn by a mammalian subject.

Provided is an artificial retina system for improving contrast sensitivity. The artificial retina system includes an artificial retina which is installed under the retina and includes a plurality of photodiode cells and a microcomputer. The microcomputer compares, with at least one reference value, the magnitude of an electric signal outputted from a photodiode in each of the photodiode cells. The microcomputer controls to amplify or reduce the electric signal outputted by each of the photodiode cells according to the result of comparison. Visual cells corresponding to each of the photodiode cells can be stimulated with an electric signal controlled by the microcomputer.

Wearable devices for providing therapy to a patient may include disposable or reusable treatment pads. The treatment pads may include electrodes and are configured to apply energy to various regions around the head and eyes. The treatment pads may provide therapy when the eyes are open or closed. The wearable device may include a battery and/or control circuitry for issuing therapy pulses through the electrodes.

The present invention relates to a tip for use with delivery devices, particularly for use in implanting retinal implants into the retinal space of an eye. The tip includes a flexible envelope and an internal sliding member. Further, the invention relates to an inserter attachment and a delivery device including said tip.

Apparatus for ophthalmic electrophysiological testing, the apparatus comprising: an EER stimulator for providing an electrical stimulus to an eye so as to evoke an electrophysiological response, wherein the EER stimulator comprises a power source; an amplifier for receiving the electrophysiological response and measuring that response, wherein the amplifier is integrated with the EER stimulator; and at least one switch disposed between the power source and the amplifier for isolating the power source from the amplifier when the electrical stimulus is delivered to the eye.

A method and apparatus of electrode interfaces for stimulating neurons and nerve cells that provides micro-fabricated electrode interfaces configured for conformal placement adjacent to neuron, nerves and neural tissue to thereby allow the neuron, nerves and neural tissue to grow around the electrode interfaces and allow for the creation depending on configuration of local or far electrical fields and current flows to stimulate them.

Examples disclosed herein are relevant to testing capacitors to identify potentially faulty DC blocking capacitors in implantable stimulators. In an example, the test includes selecting an active electrode, a return electrode, and a reference electrode. Short duration monophasic stimulation is used to charge up the DC blocking capacitors of the active and return electrodes. The electrodes are subsequently disconnected from all other nodes except a discharge circuit (e.g., a star circuit) and the tissue. The reference electrode is used to measure the voltage of the DC blocking capacitor of the active electrode during the charging phase and the discharging phase (via the discharge circuit). The characteristics of one or more of the capacitors charging or discharging can be sensed and then analyzed to determine whether the one or more capacitors are functioning properly. Faulty capacitors can be identified by comparing actual and expected characteristics.

A retinal electrode device according to an embodiment comprises: a base, a first wing connected to a first side part of the base, wherein a first folding line is defined between the base and the first wing, and a plurality of electrodes installed on at least one of the base and the first wing, wherein the retinal electrode device may be configured to have a first form in which the first wing is folded on the base along the folding line and a second form in which the first wing is unfolded on the base along the folding line.

A magnetic connection can be formed between a magnet set of a first device and magnet set of a second device. The magnetic strength of the magnetic connection can be modified by changing an orientation of a magnet set of a first device from a first orientation to a second orientation. The magnet set or a case in which the magnet set is disposed can be asymmetric, such that alternating between the first and second orientations results in different magnetic connections.

Disclosed is an artificial retinal stimulator and an artificial retinal device which are for providing image jittering. The artificial retinal stimulator for providing the image jittering includes: a photodiode configured to sense light stimulation and generate a current based on an intensity of the stimulation; a pulse generator configured to generate a pulse to be provided to a corresponding stimulation electrode on the basis of the current coming from the photodiode; a switch configured to connect an output terminal of the pulse generator and ground; and a jittering switch configured to determine whether to transfer the generated pulse to the corresponding stimulation electrode or to transfer to a stimulation electrode corresponding to another artificial retinal stimulator. According to the present disclosure, an image jittering function capable of emulating an eye blinking effect is provided, so that it is possible to enable a low vision patient to see images better.