126 results about "Nerve stimulator" patented technology

A method is provided that includes inserting a neurostimulator into a face of a subject and advancing the neurostimulator between a mandibular notch and a zygomatic process of a temporal bone toward a sphenopalatine ganglion (SPG), the subject identified as at risk of or suffering from dementia. Cerebral blood flow (CBF) of the subject is increased by activating the neurostimulator to drive, between first and second SPG-stimulation electrodes of the neurostimulator, alternating current configured to stimulate the SPG. Other embodiments are also described.

In an illustrative embodiment, a wearable auricular stimulator includes a flexible body adapted to be worn at least partially around an auricle of a wearer, including an exterior for positioning in contact with a wearer's skin, and an interior for supporting a three-dimensional (3D) circuitry layout, including traces deposited on surfaces of the interior of the flexible body, electrodes for delivering electrical stimulation therapy to the wearer via a skin-facing side of the flexible body, and electronic component(s) electrically connected with the electrodes and the traces, the electronic components including a processing circuitry element for delivering electrical stimulation treatment(s) via the electrodes.

According to another disclosed embodiment, an energy efficient implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body is provided. The neurostimulator includes a converter for generating the stimulation current, wherein the converter includes a voltage increasing circuit and a voltage reducing circuit. The stimulator may also include a current source that includes a pair of cascode arranged transistors that are controlled to maintain an amplitude of the stimulation current substantially constant. The neurostimulator may also include a bias voltage power supply that powers a selecting circuit for selecting one of the voltage increasing or voltage decreasing circuits.

A closed-loop neuromodulation system includes at least one implantable neurostimulator configured to deliver electrical stimulation to a target nerve innervating a muscle; at least one biosignal sensor configured to detect a physiological signal associated with the target muscle, wherein the physiological signal may include an electromyographic (EMG) or electroneurographic (ENG) signal; and a controller operatively coupled to the neurostimulator and the sensor. The controller is configured to receive the physiological signal from the sensor, determine whether the signal satisfies a predefined condition indicative of weakness, strength, fatigue, muscle underactivity, or overstimulation, and, in response to detecting that the condition is satisfied, automatically adjust one or more stimulation parameters selected from amplitude, frequency, pulse width, train duration, or train count.

The invention discloses a stimulation generation circuit for a nerve stimulator, and relates to the technical field of integrated circuits, and the circuit comprises a digital circuit which is used for generating a control signal of a stimulation waveform containing specific frequency, amplitude, pulse width, interval and number of times; the stimulation current generating circuit is used for generating stimulation current; the stimulation voltage generating circuit is used for generating stimulation voltage; the control signal is used for controlling the conduction duration and the conduction sequence of the switch A, the switch B, the switch C and the switch D, and the output stage circuit generates stimulation currents with different stimulation waveforms; the conduction duration and the conduction sequence of the signal voltage switch, the switch A, the switch B, the switch C, the switch D, the charging switch and the discharging switch are controlled, and the output stage circuit generates stimulation voltages with different stimulation waveforms. According to the invention, the conduction sequence and duration of different switches of the output stage circuit are controlled through the control signal, electrical stimulation of different modes and different waveforms can be realized, and diversified stimulation treatment is realized.

The invention relates to an in-vitro program controller and a control method thereof. The in-vitro program controller comprises a sensor and a processor, and the processor sets the working power of the implantable nerve stimulator, a temperature early warning value and a temperature upper limit value greater than the temperature early warning value according to the stimulation parameters; when the movement of the in-vitro program control instrument is determined at every reference time interval or according to the posture change detected by the sensor, a data reading instruction is sent to the implantable nerve stimulator so as to read the working power and temperature of the implantable nerve stimulator; increasing, decreasing or maintaining the transmitting power according to the comparison between the read working power and the set working power; according to the fact that the read temperature is larger than or equal to the set temperature early warning value and smaller than the set temperature upper limit value, the transmitting power is reduced; and sending a stimulation stop instruction when the read temperature is greater than or equal to a set temperature upper limit value. According to the invention, the working power, temperature and the like of the implantable nerve stimulator can be monitored and adjusted, so that safe treatment of a patient is ensured.

The invention discloses an ear nerve stimulator, and belongs to the technical field of biomedical engineering and nerve regulation and control. The device mainly comprises a plurality of flexible patches attached to the ear, ear electrodes arranged according to ear acupuncture points and embedded in the flexible patches, and a stimulator adopting a cross-ear design. And the flexible patch has biocompatibility and adhesion, so that comfortable and stable wearing is ensured. A control unit and a stimulation module are contained in the stimulator shell, and stimulation current parameters can be generated and accurately regulated and controlled. Through flexible fitting and precise acupoint electrode design, the defects that a traditional electrode is uncomfortable to wear, and a stimulation area is fixed and inaccurate are overcome. And the equipment is light and stable due to the ear-crossing structure. A selectable air pump and air bag mechanism further ensures the reliability of electric contact. The device can realize safe, accurate and comfortable ear vagus nerve stimulation, is suitable for treatment and rehabilitation of epilepsy, depression and other diseases, and has a wide application prospect.

Disclosed herein is a noninvasive auricular neurostimulator comprising a stimulation device for activating an auricular branch of the Vagus nerve, said stimulation device comprising an active electrode facing a concha cavum of the ear, and a return electrode facing an Eminence of the concha, or the retro auricular sulcus.

A neurostimulation system may include at least one electrode contact and a neurostimulator configured to use the at least one electrode contact to deliver a stimulation therapy to a patient using an electrical waveform that includes first phases of a first polarity and second phases of a second polarity opposite the first polarity. The neurostimulator may configured to deliver the stimulation therapy by therapeutically stimulating neural tissue using the both the first phases and the second phases of the electrical waveform. The second phases remove built up charge from the at least one electrode contact caused by the first phases, and the first phases remove built up charge from the at least one electrode contact caused by the second phases. Benefits include reducing energy consumption using the recharge pulse to activate a population of neural elements for reducing energy consumption.

A system may include a neurostimulator and a processing system configured to provide a stimulation effects map by testing stimulation parameter sets from a plurality of available stimulation parameter sets, acquiring clinical effect data indicative of a patient response to electrical energy delivered to the tissue using at least a first subset of the tested stimulation parameter sets, acquiring sensed data indicative of a sensed response to the electrical energy delivered to the tissue using at least a second subset of the tested stimulation parameter sets, and evaluating parameter sets from the plurality of untested stimulation parameter sets including for each of the evaluated parameter sets, determining an estimated response by estimating at least one of the patient response or the sensed response to the electrical energy using the acquired clinical effect data and the acquired sensed data. A stimulation parameter set may be chosen based on the map.

A neurostimulator implant is provided that includes a circuitry unit having first and second ends, a conducting side, and an opposing side. First and second electrodes are disposed on an outer surface of the circuitry unit so as to circumscribe the circuitry unit. Circuitry is disposed within the circuitry unit. An insulating member is disposed on the opposing side of the circuitry unit such that, on the opposing side, each electrode is covered by the insulating member by being sandwiched between a first side of the insulating member and the circuitry unit, such that the insulating member inhibits electrical conduction from the electrodes into tissue of a subject. A second side of the insulating member, opposite the first side, defines a generally flat side of the implant facing away from the first and the second electrodes of the circuitry unit. Other embodiments are also described.

The present application provides a neurostimulator and a receiving coil. The neurostimulator includes a receiving coil and a resonant capacitor. The receiving coil receives wireless power from the transmitting coil and has an adjustable inductance. The resonant capacitor is electrically connected to the receiving coil and forms a resonant network with an adjustable resonant frequency with the receiving coil. The resonant network adjusts the efficiency of the receiving coil in receiving wireless power through the adjustable resonant frequency. The receiving coil includes a coil body and a magnetically adjustable structure provided on the coil body. The inductance of the magnetically adjustable structure changes in response to changes in ambient temperature and is negatively correlated with the ambient temperature when the ambient temperature is higher than the rated operating temperature. When the ambient temperature rises to the over-temperature protection temperature, the inductance of the magnetically adjustable structure decreases to below the target inductance value. When the ambient temperature decreases below the rated operating temperature, the inductance of the magnetically adjustable structure remains constant at the rated inductance value.

The invention provides a nerve stimulator and a receiving coil. The nerve stimulator comprises a receiving coil and a resonant capacitor, the receiving coil receives wireless electric energy of the transmitting coil, the inductance value of the receiving coil is adjustable, and the resonant capacitor is electrically connected to the receiving coil and forms a resonant network with adjustable resonant frequency with the receiving coil. The resonance network adjusts the receiving efficiency of the receiving coil to the wireless electric energy through the adjustable resonance frequency, the receiving coil comprises a coil body and a magnetic adjustable structure arranged on the coil body, and the inductance value of the magnetic adjustable structure changes in response to the change of the environment temperature; when the environment temperature is higher than the rated working temperature, the magnetic adjustable structure is in negative correlation with the environment temperature, and when the environment temperature rises to the over-temperature protection temperature, the inductance value of the magnetic adjustable structure is reduced to be below the target inductance value; when the environment temperature is reduced to be below the rated working temperature, the inductance value of the magnetic adjustable structure is constant to be the rated inductance value.

A system may include a neurostimulator and a processing system. The neurostimulator may be configured to deliver electrical energy according to a stimulation parameter set. The stimulation parameter set may include at least one adjustable parameter. The processing system may be configured to perform a testing process to test delivering electrical energy by automatically progressing through a sequence of values for the at least one adjustable parameter in the parameter set. A first value and a second value in the sequence of values are separated by an initial parameter change interval and a second to last value and the last value in the sequence of values are separated by a final parameter change interval. Progressing through the sequence of values includes reducing the parameter change interval from the initial parameter change interval to the final parameter change interval.

A neural stimulator interface connected to a communication network, a connected-object manager, a direct neural interface, an electronic device connected to the communication network, a method for initializing a connected neural stimulator interface, a method for controlling a connected electronic device, and in particular, an interaction with an electronic device via a direct neural interface. A neural stimulator interface connected to a communication network is capable of reproducing a visual signal with a given frequency. The given frequency is associated with a given command of an electronic device connected to the communication network upon initializing the neural stimulator interface. The connected neural stimulator interface is separate from the electronic device. Thus, an electronic device that does not have a display can be granted a so-called BCI function, i.e. a neural interface, by using the connected neural stimulator interface.

A method of percutaneously implanting a neurostimulator implant in tissue of a patient, the neurostimulator implant having a wireless power receiver and an elongate electrode lead, includes percutaneously implanting the neurostimulator implant such that the wireless power receiver is oriented towards the skin surface of the patient at the implantation site.

A system may include a neurostimulator and a processing system, where the neuromodulator includes a directional lead. The processing system may be configured to perform a process that includes determining at least one stimulation field model (SFM) from at least a first vector that extends from a first virtual electrode on the directional lead and a second vector that extends from a second virtual electrode on the directional lead and determining a first modulation configuration corresponding to the first vector from the first virtual electrode and determining a second modulation configuration corresponding to the second vector from the second virtual electrode. The process may further include combining the first modulation configuration and the second modulation configuration into a combined modulation configuration and delivering neuromodulation via a single timing channel using the combined modulation configuration.

A system may include one implantable pulse generator and at least one implantable lead. The pulse generator may include a processor, a driving system for driving electrodes, a communication circuit, and a housing configured to be subcutaneously implanted. The lead may be configured to extend from the pulse generator to at least one neural target on a left side of a head and a neural target on a right side of the head. The lead may include at least two electrode sets, each including at least two electrodes. The lead be configured to be used to subcutaneously place the at least two electrode sets near the at least two neural targets, respectively, and electrically connect the pulse generator to each of the at least two electrodes sets to enable the driving system to drive the at least two electrode sets to stimulate the at least two neural targets.

This invention provides a control device and system for a neurostimulator. The device includes: an operation instruction generation unit configured to acquire operations performed by a target object and generate corresponding operation signals based on the operations; a control unit configured to generate corresponding internal control commands or external stimulation state control commands based on the type of the operation signals and the operating state of the control device, and send the stimulation state control commands to the neurostimulator so that the neurostimulator can parse the operation type in the stimulation state control commands and adjust the stimulation output state in conjunction with the current stimulation output state; the control unit is further configured to acquire stimulation state control command response information fed back by the neurostimulator, the stimulation state control command response information including the adjusted stimulation output state. By implementing this invention, the state switching of the pulse output state of the neurostimulator can be realized through a single operation instruction generation unit, allowing users and patients to perform various operations on the control device by only learning a few simple operations, which is convenient and quick.

Methods and systems for testing and treating spinal cord stimulation (SCS) patients are disclosed. Patients are eventually treated with sub-perception (paresthesia free) therapy. However, supra-perception stimulation is used during “sweet spot searching” during which active electrodes are selected for the patient. This allows sweet spot searching to occur much more quickly and without the need to wash in the various electrode combinations that are tried. After selecting electrodes using supra-perception therapy, therapy is titrated to sub-perception levels using the selected electrodes. Such sub-perception therapy has been investigated using pulses at or below 10 kHz, and it has been determined that a statistically significant correlation exists between pulse width (PW) and frequency (F) in this frequency range at which SCS patients experience significant reduction in symptoms such as back pain. Beneficially, sub-perception stimulation at such low frequencies significantly lowers power consumption in the patient's neurostimulator.

An integrated switch matrix for a medical device system used for long-term monitoring of electroencephalogram (EEG) signals and mapping of the brain through cortical stimulation is configured to switch functions of various electrodes associated with the system in response to user needs. The programmable switch matrix is integrated in an EEG recording device and allows for connecting any patient electrode(s) to a ground circuit, connecting any patient electrode to a common reference, connecting a selected common reference to any or all recording device(s) in the system and, connecting any patient electrode(s) to anode and / or cathode outputs of a neurostimulator for multi-contact cortical stimulation.

This application relates to a neurostimulator, a system, a neurostimulator control method, and a storage medium. The neurostimulator includes: a storage module storing historical usage data of the neurostimulator, including historical levels of stimulation signals output by the neurostimulator during past periods of operation; a control module for determining the target level of the neurostimulator upon current power-on based on the historical usage data; and an output module for outputting a stimulation signal corresponding to the target level. This application improves ease of use while ensuring safe operation.

1. The name of this design product: neurostimulator. 2. Purpose of this design product: This design product is a neurostimulator used for electrical nerve stimulation. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present disclosure provides systems and methods that utilize automation to expedite the fitting process for implantable multiple-electrode peripheral neural stimulators.

A system may include a neurostimulator including electrodes and a processing system, including a programming tool, configured to program the neurostimulator. The programming tool may be configured to receive both a selection of a location for a stimulation field and a selection of a shape from a plurality of shapes where the selected location and the selected shape are used to provide a stimulation field, determine a fractionalization, using the selected shape and the selected location, and program the neurostimulator with the fractionalization. The neurostimulator may be configured to stimulate at least one neural target according to the fractionalization.

A system may include a neurostimulator and a programmer. The neurostimulator may have a plurality of electrodes, and may be configured to deliver neurostimulation by delivering neurostimulation pulses of a first polarity to a neural target using at least one stimulation electrode from the plurality of electrodes and passively recovering charge using a first number of one or more passive electrodes from the plurality of electrodes. The programmer may have a user interface configured to receive a user input for changing a number of passive electrodes used to passively recover charge from the first number to a second number. The programmer may be configured to control the neurostimulator to passively recover charge using the second number of passive electrodes. Some examples may include fractionalization to control the contribution of each passive electrode used to recover charge. A variable impedance may be used to control a relative charge recovery current.

A method for determining a state of a patient with an implanted neurostimulator comprises receiving acceleration data of the patient, determining a body movability score of the patient, based at least in part on the acceleration data, and determining a physiological patient state based at least partly on the BMS.

Intraoral neuromodulation for the treatment clinical conditions such as, e.g., dysphagia, migraines, or speech problems can be achieved with a neuromodulation system that includes an intraoral neural stimulator, e.g., integrated into a wearable device to be positioned in the oral cavity, that is controlled based on one or more measured signals associated with an intraoral organ or nerve related to the clinical condition.

A neurostimulator (10) for applying electrical stimulation signals to a user, the neurostimulator having a first mode of operation (14) configured to be independent of a wheelchair, and a second wheelchair mode of operation (16) configured for cooperating with an electronic circuit (22) of a wheelchair (or optionally a robotic body movement device).

A system may include a neurostimulator, a feedback receiver, and a processing system. The neurostimulator may use program(s) to deliver a neurostimulation therapy to treat a patient condition and provide therapy outcomes. The feedback receiver may receive user feedback about the neurostimulation therapy, the patient condition or the therapy outcomes. The feedback receiver may include sensor(s) to sense user taps on or near the feedback receiver, a swiping motion across at least some of the feedback receiver, and / or feedback receiver movement. The processing system may test stimulation parameter sets including configure the neurostimulator to deliver the electrical energy using each of the tested stimulation parameter sets and use the user feedback to evaluate the tested stimulation parameter sets. The feedback receiver enables the patient to discreetly provide user feedback in a timely manner for a monitoring / programming application.