22 results about "Optical stimulation" patented technology

A magnetic resonance-compatible programmable synchronized photostimulation system includes a main control unit and a stimulation execution unit. The main control unit is located outside the magnetic resonance scanning room, while the stimulation execution unit is located inside the scanning room and consists only of an LED light panel shielded by a magnetic field. The main control unit is configured to: receive photostimulation sequence parameters configured by the user in a modular manner through a graphical interface; receive a scan trigger signal from the magnetic resonance equipment, and automatically control the start and stop of the photostimulation sequence based on the trigger signal using hardware triggering; thereby achieving high-precision time synchronization between photostimulation and magnetic resonance scanning while maintaining magnetic resonance compatibility. This invention solves electromagnetic compatibility issues through a split architecture, achieves millisecond-level synchronization accuracy through hardware TTL triggering, and enhances experimental paradigm flexibility through modular programmable sequences, making it suitable for neuroscience research fields such as functional magnetic resonance imaging.

A beauty device using skin impedance measurement and ultrasonic cross-frequency according to an embodiment of the present invention comprises: an electrical stimulator including an electrode, which transmits a current to the skin of a subject in order to measure the skin impedance of the subject and care for the skin condition of the subject analyzed on the basis of the skin impedance of the subject, and an LED, which irradiates the skin of the subject with light while the current is being transmitted to the skin of the subject; and a cross-frequency ultrasonic stimulator that measures the skin impedance of the subject and is provided with an ultrasonic generator that irradiates the skin of the subject with ultrasonic waves of cross-frequency in order to care for the skin condition of the subject analyzed on the basis of the skin impedance of the subject, wherein the beauty device can apply electrical stimulation, optical stimulation, and ultrasonic stimulation to the skin of the subject.

The invention discloses an OCT (optical coherence tomography) device for optical retina imaging. An OCT apparatus for acquiring optical retinal imaging data, comprising: an optical system applying an optical stimulus confined to a partition of the retina of an eye, the position of the partition being controllable; an OCT imaging system that acquires OCT data from the retina; and a controller that: acquires a duration of a physiological response of the retina in the optical retinal imaging data to be acquired; acquiring target locations on the retina and using these target locations to control the optical system to apply optical stimuli to respective first partitions of the retina at respective target locations; controlling the OCT imaging system to acquire respective OCT data of a respective second partition of the retina for each first partition for a duration indicated by the first indicator, the second partition being stimulated by an optical stimulus applied to the first partition; and generating ORG data based on the acquired OCT data.

The invention discloses a wireless photovoltaic visual cortex prosthesis system and method for total-blindness visual reconstruction, and the system comprises an external image processing unit which is used for collecting an environment image and generating a corresponding optical stimulation pattern; the near-infrared projection unit is connected with the external image processing unit and is used for converting the optical stimulation pattern into a near-infrared light stimulation sequence; the optical transparent cranial window assembly is used for transmitting the near-infrared light stimulation sequence to the visual cortex; and the flexible photovoltaic stimulation array is used for receiving the near-infrared light stimulation sequence through the optical transparent cranial window assembly and directly converting the near-infrared light stimulation sequence into an electrical stimulation signal for stimulating the primary visual cortex V1. By combining the flexible photovoltaic stimulation array with the optical transparent cranial window assembly, a wireless photoelectric link from the outside to the primary visual cortex is constructed, and a solution for reconstructing functional vision by directly stimulating the cortex without a leather-covered cable is provided for all-blind patients.

The invention relates to the technical field of implanted electrodes, in particular to a multi-mode composite neural electrode body, an electrode system and a preparation method. Comprising an insulating substrate, a plurality of electrical detection sites are arranged at the tip of the insulating substrate, and a leading-out bonding pad is arranged at the tail of the insulating substrate; a metal wiring layer; the fluid structure comprises a flow channel inlet, a first flow channel outlet and a second flow channel outlet, the flow channel inlet is a medicine inlet, and the first flow channel outlet is a medicine outlet; and the optical fiber penetrates in from the second flow channel outlet and extends to the first flow channel outlet, and an optical fiber light emitting position is formed at the front end of the optical fiber and penetrates out from the first flow channel outlet. By integrating the leading-out bonding pad, the metal wiring layer and the flow channel structure on the base body, electrical detection, electrical stimulation, optical detection, optical stimulation and drug delivery can be carried out after the slender piercing part pierces the human tissue, the freedom degree of a biological experiment is greatly improved, and a complex experiment scene can be dealt with.

The invention relates to a laser experiment platform for an in-situ photostimulation two-dimensional material of an AFM and a measurement method, and the platform comprises a clamping mechanism which is used for clamping, positioning and clamping laser generators with different radiuses; the lens element is used for amplifying or reducing the light source by adjusting the distance between the two lens frames so as to adjust the size of a light spot; the reflecting element is positioned below the sample mounting position of the platform supporting element and is used for reflecting the light beam transmitted by the lens element to irradiate to the bottom of the sample and applying in-situ light stimulation to the sample in the AFM characterization process; the platform supporting element comprises a height adjusting type objective table and a shading box, the shading box is inserted into the height adjusting type objective table, the lens element is installed in a shading box body, and a lens can move front and back in a non-perforated area of the shading box body under the action of the operating rod. In-situ light stimulation in the AFM characterization process is achieved, and the device can adapt to laser generators of various sizes; the device is small in size, and the problem of insufficient space in the AFM characterization process is solved.

A portable, wearable system and method for real-time determination and modification of a patient's cardiac electromagnetic activity. The device has a sensor array with ECG electrodes, a controller executing software, a stimulator array with at least one electromagnet and one light-emitting diode, and a power supply, optionally integrated into a belt or chest harness. The system continuously acquires ECG signals, calculates a force momentum Bion (β) based on cardiac cycle parameters, and generates synchronized electromagnetic and optical stimulation in real time, modulating output according to the patient's heart activity. Safety features include detection of electrode contact, noise, and arrhythmia, with automatic blocking of stimulation and alert generation. The device further provides wireless communication for data transmission and remote monitoring, and supports amplitude- and frequency-modulated stimulation profiles. The method includes real-time signal processing, adaptive stimulation, and configurable alerts for cardiac anomalies, enabling noninvasive cardiac monitoring and intervention.

The present invention relates to a module (22) for a microscope (12) with an XY stage (38) for determining a fixation point (20) of a user (16) and for controlling a microscope calibration function, comprising: an input interface (24) for receiving sensor data from an eye-tracking sensor (18) with information on a fixation point (20) of the user (16), for receiving operator data for operating the microscope calibration function, and for receiving marker data with information on an optical stimulus arranged on the XY stage (38); an analysis unit (26) for determining the fixation point (20) of the user (16) based on the sensor data and for determining a control command for controlling the microscope calibration function based on the operator data and performing a calibration based on the fixation point (20) and the marker data;and an output interface (28) for transmitting the control command to a control unit (36, 44) of the microscope (12) to control the XY stage (38). The present invention further relates to a method for calibrating a microscope and the use of a module with a microscope.

Embodiments of the present invention relate to an apparatus and a method for multimodal analysis of a three-dimensional biometric model such as an organoid. An apparatus according to one aspect comprises: a probe unit which probes the three-dimensional biometric model to obtain an electrical signal and applies electrical stimulation to the three-dimensional biometric model; an optical unit which optically observes the three-dimensional biometric model and applies optical stimulation to the three-dimensional biometric model; and a control unit which controls the probe unit and the optical unit, wherein the probe unit includes a probe extending in a certain direction, and the probe may include a plurality of electrodes arranged along the direction.

Provided herein are methods and systems for producing viral proteins and viral particles. In some cases, the methods and systems involve the use of optical stimulation for inducing expression of one or more viral proteins. In some cases, the methods and systems involve the use of optical switches for producing one or more viral proteins.

A method of using a light beam steering transmissive and reflective element with an arbitrarily sized aperture comprising at least one layer of a insulating matrix modified for increased polarizability under electrical, magnetic or optical stimulation, between two or more substrates that can be electrically configured to provide signal modulation (optical, magnetic or electrical) that will control the wave fronts of incident light, thereby taking off-axis electromagnetic signals and aligning them to the aperture of a receiving element positioned near the device, or the reverse, sending signals originating behind the steering device to a variety of user-defined angles in two or more dimensions.

The invention discloses a perimeter device and a view detection method, and relates to the technical field of medical detection.The perimeter device comprises a shell, a light source, a digital micromirror device, an imaging unit, an image acquisition unit and a controller; the digital micro-mirror device is arranged in the shell and is used for receiving light emitted by the light source and then generating an optical stimulation pattern; the imaging unit is installed in the shell and used for projecting the optical stimulation pattern to the eye fundus of the human eye for imaging; the image acquisition unit is mounted in the shell and is used for acquiring image data of human eyes; the controller is electrically connected with the image sensor and the digital micro-mirror device and used for calculating the rotation angle of the eyeball according to the image data of the human eyes and adjusting the position, where the optical stimulation graph is generated, on the digital micro-mirror device according to the rotation angle of the eyeball. And the image of the optical stimulation pattern projected to the eye fundus of the human eye through the imaging unit moves along with the eyeball.

The utility model discloses a composite microstructure lens and glasses. The composite microstructure lens comprises a lens body, and the lens body is provided with an optical center and an edge. In the direction extending from the optical center to the edge, the lens body is provided with a central area and a microstructure area which are sequentially arranged around the optical center; the central area comprises a bright vision area and a transition zone, and the bright vision area surrounds the optical center; the transition zone is located between the bright vision zone and the microstructure zone and connected with the bright vision zone and the microstructure zone. And the microstructure array is arranged in the microstructure area, is connected with the lens body and is used for being matched with the lens body to generate an optical stimulation signal. By introducing the transition zone between the bright vision area and the microstructure area, high adaptability and compliance can be maintained in a smaller bright vision area, and the functionality influencing myopia progress can be enhanced under the condition that the lens wearing adaptability is not influenced.

Methods and systems for cross-domain controlled stimulation of biological dynamics by AI iterative optimization physical patterns for migrating structured patterns (including crystals, semiconductors, and related processes) from physical or mineral systems to target biological systems to guide their measurable dynamic processes, such as growth, migration, proliferation, branching, and self-organization. The present application generates a defect and anisotropy mapping or descriptor delta (x) from a physical source and converts a derived stimulation pattern or stimulation recipe under constrained conditions into an executable stimulation protocol, which may include electrical stimulation or electro-physical stimulation, light stimulation, chemical stimulation, thermal stimulation or mechanical stimulation, or may be in a multi-modal form, meanwhile, the biological constraint and the executable and safety constraint of the experimental device are met; applying the stimulation protocol to a target biological system and obtaining observation data through a sensor and / or visual means (photo, video, time-lapse photography) to extract quantitative features and calculate a result indicator that can be compared to a baseline; subsequent tests are selected under constraint conditions by an artificial intelligence assisted decision engine to maximize information utility and achieve improvements while using stop rules to limit low-yield experimental activities and maintain comparability and repeatability between different runs.

A system and method for identifying and modulating electromagnetic activity of a patient's heart includes a sensor array, a controller, software, and a stimulator array. The sensor array includes one or more sensors, such as ECG electrodes, that detect electromagnetic activity of the patient's heart. The sensor array is in data communication with the controller. The controller executes software that outputs human readable sensor data provided by the sensor array. The software receives data from the controller, analyzes the data, presents the data to a user, and transmits the data to the stimulator array via a data communication link. The stimulator array includes one or more electromagnets and at least one or more light emitting diodes. The stimulator array emits electromagnetic (and / or light wave) fields to modulate the electromagnetic activity of the patient's heart based on data it receives from the controller. The system can be portable.

Disclosed herein is a system for optical stimulation of a target region in a living body. The system includes one or more probes subcutaneously placed adjacent to the target region connected to a microdevice subcutaneously placed in the living body. Each probe includes a biocompatible elastic strip, a flexible-length wire inside the elastic strip, and a plurality of light emitting elements mounted along the wire. The microdevice includes a processing unit connected to one or more light drivers coupled to the plurality of light emitting elements delivering light thereto. The processing unit includes a memory and a processor executing instructions stored in the memory to perform a method of optically stimulating cells of the target region by delivering a light beam with a predetermined set of characteristics to at least one light emitting element utilizing at least one light driver.

The application provides an optical imaging device and an optical imaging method. The optical imaging device comprises a light source module, a first galvanometer module, a second galvanometer module, a switching module and a main mirror body module. The second galvanometer module controls the two-dimensional deflection angle of the incident laser beam, realizes point-by-point scanning of the laser beam, adopts a two-photon excitation form of point-by-point scanning, improves the spatial resolution, increases the accuracy of optical stimulation, and accurately stimulates a single neuron. In addition, the holographic optical stimulation technology in the related art disperses laser light to multiple regions. Since two-photon excitation is proportional to the square of light intensity, a more expensive high-power femtosecond laser is often required. In the application, the laser beam is scanned point by point, so that each region receives sufficient stimulation energy, and a high-energy optical stimulation laser is not required, thereby reducing the cost and being more easily obtained.

A laser-powered capillary blood collecting system includes a sleeve aligned with a hollow blood collection vial having a front operational aperture, a sliding door for selectively opening the aperture, a rear main air valve responsive to negative pressure, and an auxiliary valve configured to release laser-generated plume for a defined time interval. A laser generator module comprises a laser source arranged to emit pulses through the sleeve and vial aperture and a low-pressure source coupled to the vial. The low-pressure source generates a vacuum that opens the main valve, produces suction to draw blood into the vial, and simultaneously creates air flow through the generator module for cooling the laser source. A control unit synchronizes laser emission, sliding door actuation, timed auxiliary valve operation, and closure of the main valve. The system combines optical stimulation, vacuum-assisted collection, and thermal management in a compact integrated structure.

The invention provides a transcranial optomagnetic nerve regulation and control device, and the device comprises a magnetic stimulation module which comprises a magnetic stimulation coil for applying transcranial magnetic stimulation; the light stimulation module is arranged corresponding to the magnetic stimulation module, the light stimulation module comprises a light source part and a diffusion assembly, the light source part emits near-infrared light, the diffusion assembly is arranged on the wearing side of the magnetic stimulation coil, and the diffusion assembly receives the near-infrared light from the light source part and diffuses the near-infrared light; the diffused near-infrared light is emitted from the emitting surface of the diffusion component so as to irradiate the head of a user; the light source part is arranged at the position where the magnetic field intensity of the magnetic stimulation coil is smaller than a first threshold value. When the device is used, the interference between the optical stimulation module and the magnetic stimulation module is remarkably reduced, the optical-magnetic regulation and control can be effectively and synergistically executed on the target brain area in the time domain and the space domain, meanwhile, the brain volume wide enough and the deeper position under the cerebral cortex can be stimulated, and the treatment effect is effectively improved.

This application relates to the field of cell biology, and more specifically to a multimodal biophysical characterization apparatus, a multimodal biophysical characterization system, a multimodal biophysical characterization method, and its applications. This application enables multimodal, high-resolution, high-throughput, high-sensitivity, low-cost, low-damage, and configurable physical characterization of single cells or multicellular aggregates, and allows for the application of different types and intensities of stimuli (e.g., mechanical, electrical, or optical stimulation) to the sample under measurement to better mimic the in vivo microenvironment, and allows for manipulation (e.g., labeling, fixation, ablation, cutting, extraction, or sorting) of samples at specific locations or regions, and can be combined with other characterization methods (e.g., protein staining, histochemical staining, or single-cell sequencing) for comparative analysis. The multimodal biophysical characterization apparatus according to this application is suitable for fields such as synthetic biology, diagnostics, drug discovery, early tumor screening, cell therapy, and precision medicine.

This invention relates to the field of brain function monitoring and discloses a closed-loop transcranial photostimulation (tPBM) modulation method and system based on near-infrared brain response characteristics. First, fNIRS signals of the target brain region of the subject are acquired. After the fNIRS signals pass through the data pathway, preprocessing and windowing calculations are performed to extract dynamic response characteristics. By setting the difference detection between the baseline and stimulation periods, blood oxygen response indicators are calculated, and based on these indicators, the current brain region is identified as having enhanced, sluggish, inhibited, or fatigued responses, yielding the change in HbO. Through the real-time acquisition of HbO changes, features such as the instantaneous rate of change and peak response of indicators like Δ[HbO] and Δ[HbR] are extracted to construct an individual's "baseline-response" curve model for parameter optimization and control, completing the tPBM stimulation modulation. This invention solves the problems of equipment redundancy, spatial interference, poor synchronization, difficulty in achieving real-time coordination between intervention and imaging, and poor measurement stability and accuracy in existing technologies.

The invention relates to an optical stimulation device comprising: A light source (S) arranged to produce a stimulation light signal (L), A photodetector (PH) arranged to capture a reflected light signal, First optical means coupled to said light source (S) for emitting said stimulation light signal (L) and second optical means coupled to said photodetector (PH) for recovering said reflected light signal, A processing and control unit (UC) connected to said light source (S) and said photodetector (PH), and configured to control optical emission data (D_E) relating to the stimulation light signal (L) produced by said light source (S) and to receive data (D_R) representative of an optical reflection from said photodetector (PH). Figure to be published with the abbreviation: Figure 1 A