33 results about "High frequency stimulation" patented technology

A desired effect is produced by therapeutically activating tissue at a first site within a patient's body and a corresponding undesired side effect is reduced by blocking activation of tissue or conduction of action potentials at a second site within the patient's body by applying high frequency stimulation and / or direct current pulses at or near the second site. Time-varying DC pulses may be used before or after a high frequency blocking signal. The high frequency stimulation may begin before and continue during the therapeutic activation. The high frequency stimulation may begin with a relatively low amplitude, and the amplitude may be gradually increased. The desired effect may be promotion of micturition or defecation and the undesired side effect may be sphincter contraction. The desired effect may be defibrillation of the patient's atria or defibrillation of the patient's ventricles, and the undesired side effect may be pain.

A method for the treatment of a patient for the purpose of lowering blood pressure and / or treating cardiac arrhythmias, particularly atrial fibrillation includes the insertion of an ablation catheter into the lumen of a renal artery. The ablation catheter is equipped with an electrode that can stimulate the wall tissue in the renal artery to help identify the location of a renal nerve. High-frequency stimulation of the renal nerve causes a decrease in the blood pressure of the patient thereby indicating that a renal nerve is nearby. The ablation catheter is used to ablate the renal nerve using radiofrequency, ultrasound, microwave energy or cryogenic cooling. An irrigated ablation catheter may be used to decrease damage to cells in the wall of the lumen of the renal artery other than the renal nerve, such as the endothelial cells.

The present invention describes methods and devices using low frequency electrical stimulation or neural high frequency stimulation to modulate lower esophageal sphincter (LES) pressure. The electrical stimulation may be delivered to the LES via one or more electrodes that is placed in contact with the LES tissue. The methods and devices are useful to treat a number of conditions or disease conditions, including for example, gastroesophageal reflux disease (GERD).

The present invention describes methods and devices using low frequency electrical stimulation or neural high frequency stimulation to modulate lower esophageal sphincter (LES) pressure. The electrical stimulation may be delivered to the LES via one or more electrodes that is placed in contact with the LES tissue. The methods and devices are useful to treat a number of conditions or disease conditions, including for example, gastroesophageal reflux disease (GERD).

IMDs and methods are provided for electroporation treatment of subcutaneous tumors. In some embodiments, IMDs of the present invention may store and introduce chemotherapy drugs into the body prior to electroporation therapy. High frequency stimulation of tissue in or around the tumor may also be provided to increase tissue temperature prior to electroporation therapy. Still further, delivery of the electroporation therapy may be synchronized with cardiac qRs complex to avoid impeding normal cardiac rhythm. Algorithms to suspend therapy in the event of edema may also be incorporated.

A desired effect is produced by therapeutically activating tissue at a first site within a patient's body and a corresponding undesired side effect is reduced by blocking activation of tissue or conduction of action potentials at a second site within the patient's body by applying high frequency stimulation and / or direct current pulses at or near the second site. Timex varying DC pulses may be used before or after a high frequency blocking signal. The high frequency stimulation may begin before and continue during the therapeutic activation. The high frequency stimulation may begin with a relatively low amplitude, and the amplitude may be gradually increased. The desired effect may be defibrillation of the patient's atria or defibrillation of the patient's ventricles, and the undesired side effect may be pain.

A method is described for generating stimulus signals for an auditory prosthesis system. A high frequency signal conveys higher frequency audio information including exceptionally low rate band-pass envelope characteristics. This high frequency signal represents at least the upper part if not all of the range of frequencies for speech, music, and other sounds that are audible to listeners with normal hearing. A separate low frequency signal is also provided representing lower audio frequency information including periodicity characteristics (voiced / unvoiced or periodic / aperiodic distinctions) and for periodic sounds, fundamental frequency characteristics. The high frequency signal is applied to the auditory system of a patient by an associated high frequency stimulator, and the low frequency signal is applied to the auditory system of the patient by an associated low frequency signal.

Methods and apparatus for inducing neurogenesis within a human. An implantable signal generator is used to deliver high frequency stimulation to deep brain tissue elements. The implanted device delivers treatment therapy to the brain to thereby induce neurogenesis by the human. A sensor may be used to detect various symptoms of nervous system discovery. A microprocessor algorithm may then analyze the output from the sensor to regulate the stimulation and / or drug therapy delivered to the brain.

The invention discloses a Hilbert-Huang Transform (HHT)-based high-frequency combined coding steady state visual evoked potential brain-computer interface method, which comprises the following steps of: connecting hardware, expressing different targets by using nn stimulation sequences formed by time sequence permutation and combination through n high-frequency stimulation frequencies, coding the stimulation sequences to form a code base, then executing electroencephalogram data characteristics by adopting a Hilbert-Huang Transform (HHT)-based variable frequency electroencephalogram signal characteristic extraction method, acquiring a Hilbert time-frequency graph of the electroencephalogram data, and comparing the extracted electroencephalogram data characteristics with the code base by using a local frequency spectrum extreme value target identification method to realize quantified target identification accuracy. The method has the advantages of simple operation, little electrode number, more target number, reduction of testee fatigue, and reduction of probability of inducing testee epilepsy.

The invention relates to methods and devices for treating and / or preventing atrial fibrillation. In an embodiment, the invention includes a method of treating and / or preventing atrial fibrillation including applying an oscillating electrical stimulus to a tissue of a patient, the oscillating electrical stimulus sufficient to block transmission of electrical signals through the tissue. In an embodiment, the invention includes an implantable medical device including a stimulator configured to generate an oscillating electrical stimulus at a frequency and amplitude sufficient to block transmission of electrical signals through a tissue, a stimulation electrode in communication with the stimulator, the stimulation electrode configured to deliver the oscillating electrical stimulus to the tissue, and control circuitry in communication with the stimulator, the control circuitry configured to selectively deliver the oscillating electrical stimulus to treat and / or prevent atrial fibrillation. Other embodiments are also described herein.

Methods and apparatus for inducing neurogenesis within a human. The invention utilizes an implantable signal generator to deliver high frequency stimulation to deep brain tissue elements. The implanted device delivers treatment therapy to the brain to thereby induce neurogenesis by the human. A sensor may be used to detect various symptoms of nervous system discovery. A microprocessor algorithm may then analyze the output from the sensor to regulate the stimulation and / or drug therapy delivered to the brain.

An exemplary system includes a processing facility and a control facility. The processing facility is configured to 1) divide an audio signal presented to a cochlear implant patient into a plurality of analysis channels each containing a frequency domain signal, and 2) maintain data representative of a crossover frequency. The control facility is configured to 1) direct a cochlear implant to apply electrical stimulation representative of each frequency domain signal included in a plurality of low frequency analysis channels located below the crossover frequency in accordance with a low frequency stimulation strategy that includes a degree of focusing, and 2) direct the cochlear implant to apply electrical stimulation representative of each frequency domain signal included in a plurality of high frequency analysis channels located above the crossover frequency in accordance with a high frequency stimulation strategy that includes a lesser degree of focusing than the low frequency stimulation strategy.

Systems and methods for treating a patient having symptoms of restless legs syndrome (RLS) or Periodic Limb Movement Disorder (PLMD) using high-frequency stimulation by applying a high-frequency pulsed electrostimulation therapy signal to a peroneal nerve or a branch thereof, where the therapy signal is above a motor threshold of a muscle innervated by the peroneal nerve or branch thereof. Surface EMG (sEMG) response to neurostimulation can be used to evaluate patient responsivity to neurostimulation, or to evaluate neurostimulation efficacy, such as to compare various neurostimulation parameter settings and to select between such settings to meet or balance between one or more goals. The sEMG response can be obtained with the muscle at rest, or during muscle activation.

An implantable pulse generator (IPG) that generates spinal cord stimulation signals for a human body includes a timing generator and high frequency generator. The timing generator generates timing signals that represent stimulation signals for multiple channels. The high frequency generator determines whether to modulate the timing signals and modulates them at a burst frequency according to stored burst parameters if the decision is yes. As such, the IPG provides the ability to generate both the low frequency and high frequency stimulation signals in different channels according to user programming.

This invention provides a device for implantation directly into the spinal cord for the purpose of treating back pain. Electrodes on a backing that conforms directly to the spinal cord are installed as a source of electrical stimulation and pain relief. The floating electrodes can be flexibly mounted to the substrate such that when the electrode array is implanted into the subject, individual electrodes float or move resiliently relative to the substrate to an extent sufficient to accommodate pulsations of the surface of the spinal cord within the dura.

The invention provides a multi-site closed-loop stimulation feedback system and a multi-site closed-loop stimulation feedback method for gait disorder of Parkinson's disease. The system comprises a signal acquisition module used for acquiring electroencephalogram physiological signals of primary motor cortex and subthalamic nucleus and generating PAC signals; the signal processing module is used for generating a gait disorder probability curve based on waveform indexes of the PAC signal and the electroencephalogram physiological signal, and judging whether a probability value in the gait disorder probability curve in a certain time period exceeds a PAC threshold value or not; the stimulation control module is used for generating a control command for outputting high-frequency stimulation or low-frequency stimulation and controlling the signal acquisition module to continuously acquire stimulated electroencephalogram physiological signals at the primary motor cortex for feedback; the stimulation generation module is used for emitting a high-frequency or low-frequency stimulation signal to an electrode arranged at the subthalamic nucleus based on the control command; wherein the signal processing module and the stimulation control module adjust parameters of high-frequency stimulation or low-frequency stimulation according to the stimulated electroencephalogram physiological signals.

A desired effect is produced by therapeutically activating tissue at a first site within a patient's body and a corresponding undesired side effect is reduced by blocking activation of tissue or conduction of action potentials at a second site within the patient's body by applying high frequency stimulation and / or direct current pulses at or near the second site. Time-varying DC pulses may be used before or after a high frequency blocking signal. The high frequency stimulation may begin before and continue during the therapeutic activation. The high frequency stimulation may begin with a relatively low amplitude, and the amplitude may be gradually increased. The desired effect may be defibrillation of the patient's atria or defibrillation of the patient's ventricles, and the undesired side effect may be pain.

In accordance with the present invention, various embodiments of neurostimulators and stimulation systems are disclosed that provide different shapes and patterns of stimulus pulses and trains of pulses with fixed and no fixed frequencies. The neurostimulator can be configured to provide high frequency stimulation and also be implantable in the head or neck regions in order to stimulate nerves and nerve ganglions in the head and neck regions and also stimulate the brain.

The present invention relates to the medical field, in particular to an electrical stimulation medical device for acupoint massage recovery. The front plate contains a stimulating electric shock frequency head, which contains a vertical cavity, and the front part of the cavity contains a metal end. An electric stimulation connection line protrudes from the metal end, and the electric stimulation connection line is connected to an external power supply. Pioneering combination of vibration, controllable area electrotherapy, acupoint electrotherapy and visual stimulation, acupoint massage and acupoint selective electrotherapy in Chinese medicine can be realized, and high-frequency stimulation can be given to local nerve belts without affecting nerves in other areas. It is suitable for people of all ages, heights and shapes. The above-mentioned effects can be achieved through a set of structures, and at the same time, it is also groundbreaking to achieve electrotherapy and magnetic therapy with the help of acupoints and veins. By combining the stimulation of the veins with the microscopic electrical stimulation of the nerves, To achieve a good therapeutic effect and stimulate the patient's own subjective initiative as much as possible.

In accordance with the present invention, various embodiments of neurostimulators and stimulation systems are disclosed that provide different shapes and patterns of stimulus pulses and trains of pulses with fixed and no fixed frequencies. The neurostimulator can be configured to provide high frequency stimulation and also be implantable in the head or neck regions in order to stimulate nerves and nerve ganglions in the head and neck regions and also stimulate the brain.

The invention relates to the field of medical treatment, in particular to an electric acupoint massage recovery and electric stimulation pertinence medical treatment device. A preposition board comprises a stimulation and electric shock frequency head, wherein the stimulation and electric shock frequency head comprises a vertical cavity; a front section of the cavity comprises a metal end part; and an electric stimulation connecting line extends from the metal end part and is connected with an external power supply. The device integrates vibration, electrotherapy of a controllable area, acupoint electrotherapy and visual stimulation creatively, can achieve acupoint massage and selective acupoint electrotherapy in the traditional Chinese medicine, can bring high-frequency stimulation to local nerves, does not influence nerves in other areas, is suitable for people at various age groups and with various heights and body types, achieve the effects via a structure, further achieves the electrotherapy and magnetotherapy creatively by virtue of acupoints and meridians at the same time, and achieves a good treatment effect and arouses self subjective initiatives of patients to the fullest extent by combining the stimulation of the meridians and the micro electric stimulation of the nerves.

Systems and methods for treating a patient having symptoms of restless legs syndrome (RLS) or Periodic Limb Movement Disorder (PLMD) using high-frequency stimulation by applying a high-frequency pulsed electrostimulation therapy signal to a peroneal nerve or a branch thereof, where the therapy signal is above a motor threshold of a muscle innervated by the peroneal nerve or branch thereof. Surface EMG (sEMG) response to neurostimulation can be used to evaluate patient responsivity to neurostimulation, or to evaluate neurostimulation efficacy, such as to compare various neurostimulation parameter settings and to select between such settings to meet or balance between one or more goals. The sEMG response can be obtained with the muscle at rest, or during muscle activation.

Systems and methods for treating a patient having symptoms of restless legs syndrome (RLS) or Periodic Limb Movement Disorder (PLMD) using high-frequency stimulation by applying a high-frequency pulsed electrostimulation therapy signal to a femoral nerve or a branch thereof. An electrostimulation device can include or use clonus detection circuitry can be used such as to monitor for a presence of clonic activity during treatment. Feedback from the clonus detection circuitry can be used to select or modify a therapy parameter of the electrostimulation device such as to help mitigate clonic muscle activity during therapy.