2126results about "Optical sensors" patented technology

A system for generating and detecting transient vapor nanobubbles in a fluid from a patient can include a micro-fluidic device to receive a flow of the fluid from the patient, a laser pulse source to provide a laser pulse to the flow of the fluid from a first side of the micro-fluidic device, a probe light source to provide a probe light to the flow from the first side of the micro-fluidic device, and a photodetector located at a second side of the micro-fluidic device opposite the first side. The photodetector can detect scattered, reflected, and / or deflected probe light and output a nanobubble signal including characteristics of optical scattering, reflecting, and / or deflecting by the transient vapor nanobubble.

An optical physiological sensor can be integrated into a wearable device and can comprise a substrate having an optical center, a first emitter group of light emitting diodes (LEDs) positioned adjacent to the optical center of the substrate and spaced at an offset from the optical center, a second emitter group of LEDs positioned adjacent to the optical center of the substrate at an offset to the optical center and spaced at an offset from the optical center opposite the first emitter group of LEDs relative to the optical center, and a plurality of detectors arranged in a spatial configuration that surrounds the first and the second emitter group. Each of the plurality of detectors can be positioned on the substrate a same distance away from the optical center of the substrate.

Various wearable health monitoring devices are described herein. Some implementations include one or more emitter chamber covers injection molded out of a first material comprising transparent glass, one or more detector chamber covers injection molded out of a second material comprising transparent glass, and a light barrier construct injection molded out of a third material over the one or more emitter chamber covers and the one or more detector chamber covers. The third material may be opaque and can comprise glass and an optically absorbing pigment. Some implementations include a circuit board, emitter(s) mounted to the circuit board and arranged within the emitter chamber cover(s), and detector(s) mounted to the circuit board and arranged within the detector chamber cover(s). The circuit board, emitter(s), detector(s), emitter chamber cover(s), and detector chamber cover(s) can form part of a sensor assembly connected to a housing of the wearable health monitoring devices.

Various wearable health monitoring devices are described herein. Some implementations include a housing including a front side and a back side configured to face tissue of the wearer when the device is worn; and a sensor assembly positioned by the back side of the housing. The sensor assembly can include emitters and detectors positioned on a surface of a substrate and a frame positioned adjacent to the surface of the substrate and configured to inhibit transmission of optical radiation through the frame. The frame can comprise an emitter chamber housing the emitters; and one or more detector chambers housing the one or more detectors.

Medical systems and devices include an elongate probe configured for insertion into a patient, where the elongate probe includes an atraumatic tip and where the atraumatic tip can include one or more of a loop, a curl, coil, a flexible distal region, and a steerable distal region. The distal region can be configured to transition away from a first shape toward a second shape upon insertion of the elongate probe within the patient. The optical fiber can include sensing core fibers configured to facilitate a determination of a physical state of the elongate probe. The elongate probe can also be configured to project illuminating light away from a distal end and receive imaging light at the distal end. The elongate probe can include a catheter.

This disclosure is directed to techniques for detecting and mitigating inaccurate sensing in a medical system. In some examples, one or more sensors of the medical system may include at least one electrode configured to sense an impedance of a portion of a patient's body proximate to the electrode and processing circuitry of the medical system may detect an inaccuracy in the data corresponding to the one or more patient physiological parameters based upon data including at least the sensed impedance of the portion of the patient body; correct at least a portion of the inaccuracy in the data corresponding to the one or more patient physiological parameters; and generate, for display on a display device, output data indicating the inaccuracy in the data corresponding to the one or more patient physiological parameters.

A chip package includes a housing, one or more electrical connections coupled to an exterior of the housing, a photonic integrated circuit, and a scanning unit. Both the photonic integrated circuit and the scanning unit are disposed within the housing. The photonic integrated circuit has at least one waveguide designed to guide a beam of light. The scanning unit is designed to laterally scan the beam of light across a focal plane outside of the housing. The scanning unit is aligned with the photonic integrated circuit such that the beam of light is coupled between the photonic integrated circuit and the scanning unit.

A sensor system for optical detection of multiple analytes is discussed. An example system is presented that includes a plurality of lenses configured to receive individual light signals from analyte-sensing chromophores disposed on an array when the analyte-sensing chromophores are illuminated by light while being exposed to different specific analytes within an interstitial fluid. The system further includes at least one volume phase grating (VPG) communicatively coupled to at least one of the plurality of lenses and a detector communicatively coupled to the at least one VPG so that light signals from the analyte-sensing chromophores are focused by the plurality of lenses to the at least one VPG and transmitted to the detector. The detector being operable to generate spectra with each spectrum corresponding to an individual light signal from a single analyte-sensing chromophore.

An optical physiological sensor configured to be secured to a user's nose includes a first prong configured to be positioned proximate an outside portion of the nose, a second prong configured to be positioned proximate an inside portion of the user's nose, a winged portion coupled to the first prong and configured to contact tissue of the user, one or more emitters configured to emit light of one or more wavelengths into the tissue, and one or more detectors configured to detect at least a portion of the light emitted from the one or more emitters after attenuation through at least a portion of the tissue. In some configurations, the winged portion comprises a width that is greater than a width of the second prong. In some configurations, at least a portion of the winged portion is curved toward the second prong.

The embodiment of the invention provides a detection device, electronic equipment and a control method thereof, relates to the technical field of data detection, and aims to solve the problem that equipment with a health sign detection function is large in size. The detection device comprises a first circuit board, a light-emitting device, a photoelectric converter, a metal cover plate and a light-transmitting structure. The photoelectric converter and the light-emitting device are arranged on the same side of the first circuit board and are electrically connected with the first circuit board. The metal cover plate covers the first circuit board and is electrically connected with the first circuit board. The metal cover plate is provided with a first light through hole for exposing the light-emitting device and a second light through hole for exposing the photoelectric converter. The light-transmitting structure is filled in the first light-transmitting hole, the second light-transmitting hole and the accommodating cavity, wraps the light-emitting device and the photoelectric converter, and is connected with the light-emitting device, the photoelectric converter, the first circuit board and the metal cover plate to form an integrated structural member, so that the size of the detection device is reduced.

Methods, systems, and devices for a wearable ring device are described. A wearable ring device may include a ring-shaped housing and a printed circuit (PCB) that at least partially contacts an inner shell of the ring-shaped housing. Light-emitting components and light-receiving components may be disposed on a first surface of the PCB and may extend through an aperture(s) in the inner shell such that the light-emitting and light-receiving components are substantially flush with an inner ring-shaped surface of the inner shell. Optical lenses may cover the light-emitting and light-receiving components within the aperture(s). In some cases, the optical lenses may be molded over the light-emitting and light-receiving components before the PCB is inserted into the ring-shaped housing. In other cases, the optical lenses may be molded over the light-emitting and light-receiving components (and the aperture(s)) after the PCB is inserted into the ring-shaped housing.

An electronic interface device is configured for use with associated optics for employing coded light for illuminating a liquid, gaseous, or other analyte or target, such as for measuring or determining a composition or other property of the analyte or target. The arrangement can help enable a far higher level of performance, such as for spectral analysis, imaging, or both. A shared common clock on both the illumination and receive sides of the system can be included, such as together with one or more of reference detection, per-channel wavelength-dependent modulation, multiple concurrent feedback loops at different levels, orthogonal and circulant codes, phase-scrambling to better utilize ADC dynamic range, oversampling, and other signal processing can be provided.

A medical device system includes a stylet with an optical fiber and a console operatively coupled to the stylet. The optical fiber can include an electrically conductive concentric tube configured to transmit electrical signals and a plurality of core fibers within the concentric tube. Each of the plurality of core fibers can include a plurality of sensors, and each the plurality of sensors can be configured to reflect a light signal of a different spectral width based on received incident light and change a characteristic of the reflected light signal based on a condition experienced by the stylet. The console includes one or more processors and a non-transitory computer-readable medium with logic that causes operations including providing an incident light signal to the optical fiber and receiving reflected light signals of different spectral widths of the received incident light by the plurality of sensors.

An optical speckle receiver for receiving a speckle signal from a sample, the optical speckle receiver comprising an optical detector and an aperture and / or lens array. The aperture and array respectively comprise a plurality of apertures or lenses and is located between the sample and the optical detector such that the received speckle pattern is obtained from multiple discrete sample locations.

A biometric wearable device (e.g. finger ring or smart watch) has optical sensors to measure body oxygenation level, hydration level, glucose level, heart rate, heart rate variability, and / or blood pressure. Light from light emitters is transmitted through body tissue and changes in the light are analyzed. The angles and / or vectors along which the light is transmitted through body tissue can be automatically changed by the device in order to scan different tissue regions and / or different tissue depths.

A multi-wavelength PPG system and method configured with optimized mechanical configuration for a chest-worn device for electrocardiogram and multi-wavelength photoplethysmogram acquisition. The multi-wavelength PPG system includes an electrocardiogram sensing assembly having two or more electrodes configured to mount the chest-worn device to the subject's chest. The multi-wavelength photoplethysmogram sensing assembly is located in between the electrocardiogram sensing electrodes to be maintained at the optimal sensing location by the mounting of the electrocardiogram sensing electrodes. The multi-wavelength photoplethysmogram includes one or more additional PPG emitters to provide additional information that can be employed to assess the quality of a signal acquisition with respect to movement artifacts, e.g., to reduce motion artifacts and / or provide accurate target data segments of higher signal quality having improved accuracy for SpO2 estimation.

The present disclosure provides methods and systems for identifying a tissue characteristic in a subject. Identifying a tissue characteristic may comprise accessing a database comprising a first set of data from a first image obtained from a first tissue region of the subject and a second set of data from a second image obtained from a second tissue region of the subject; computer processing the first set of data and the second set of data to (i) identify a presence or absence of one or more features indicative of the tissue characteristic in the first image, and (ii) classify the subject as being positive or negative for the tissue characteristic based on the presence or absence of the one or more features in the first image; and generating an electronic report which is indicative of the subject being positive or negative for the tissue characteristic.

A wearable device for measuring biometric parameters includes a circular or polygonal array of sets of light emitters and light receivers. Light transmitted through body tissue is received and analyzed to measure one or more biometric parameters such as oxygenation level, heart rate, heart rate variability, blood pressure, hydration level, and / or blood glucose level. Each set of light emitters includes light emitters which emit light of different colors. This device can also include one or more compressible opaque light barriers which surround light receivers.

A wearable device to measure a user's physiological parameters comprising one or more biosensors, as well as a light source comprising light emitting diodes, lenses for directing light towards tissue of the user comprising blood vessels, and a detection system receiving reflected tissue light. The physiological parameters, for example hypertension, are measured with a differential measurement. For example, the physiological parameters may be associated with pulse rate and blood flow. The output signal is associated with the physiological parameters, and artificial intelligence may be used in making decisions regarding the output signal. Signal-to-noise ratio of the output signal may be improved by synchronizing the detection system to the light source, increasing light intensity, and detecting a change. The wearable device is configured to determine that is being worn by the user and may be configured to communicate with a smartphone or tablet.

An imaging system is provided comprising an imaging probe and at least one delivery device. The imaging probe comprises an elongate shaft, a rotatable optical core and an optical assembly. The elongate shaft comprises a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. The rotatable optical core is positioned within the lumen of the elongate shaft and comprises a proximal end and a distal end. The rotatable optical core is configured to optically and mechanically connect with an interface unit. The optical assembly is positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end. The optical assembly is configured to direct light to tissue and collect reflected light from the tissue. The imaging probe is constructed and arranged to collect image data from a patient site. The at least one delivery device is constructed and arranged to slidingly engage the imaging probe. Methods of introducing the imaging probe and the at least one delivery catheter into a patient are also provided.

Medical systems, devices, and methods for determining whether a blood vessel is a vein or an artery. The system includes an optical fiber configured for insertion into a blood vessel coupled with a console having a light source, an optical receiver, processors, and logic stored in memory. The optical fiber includes sensors disposed along its length configured to determine a state or condition of the optical fiber. The state or condition can include a strain, movement, pressure, and / or temperature. The logic is configured to analyze reflected signals from the sensors to determine whether the optical fiber is inserted within an artery or within a vein. The logic may also determine a red-blue shift of a projected light to determine a blood flow direction with respect to the optical fiber.

Systems, methods, and storage media for robot-assisted laser osteotomy are disclosed. Exemplary implementations may: receive osteotomy data obtained in connection with robot-assisted laser osteotomy; analyse the osteotomy data to determine one or more attributes associated with osteotomy; and determine, based on the one or more attributes, one or more functions associated with osteotomy.

The present disclosure provides systems, devices, and methods for imaging and imaging subject. The systems and devices may include one or more light filtering devices. The light filtering devices may include a chamber having an input and an output. The chamber may be configured to receive a beam of light. The chamber may comprise a plurality of reflectors configured to direct the light received in an optical path from the input to the output via reflectance of the light between one or more reflectors of the plurality of reflectors. The chamber may be configured to reject out of focus light along the optical path.

Aspects of the disclosure relate to the use of an optical detection scheme enabling multiple imaging sub-systems concurrently optimized for retrieving multiple characterization modalities. The feature described is an offset illumination and detection arrangement for a multimodal imaging probe. The imaging probe comprises multiple waveguides disposed within a torque-transfer coil, distally terminating at longitudinally separated positions. A first waveguide may have focusing optics for focused illumination and / or detection. Any number of other waveguides may be deployed for illumination and / or detection having no focusing optics. The disclosure enables high-fidelity multimodal imaging systems.

A method for intraoral scanning, including introducing an intraoral scanner (IOS) head into an oral cavity, acquiring an image of a field of view (FOV), processing the acquired FOV image and adjusting at least one image acquisition parameter based on said processing, and an intraoral scanner (IOS) including an IOS head including at least one imager imaging a field of view (FOV), at least on light emitter that illuminates said FOV and circuitry that controls said imager and / or said light emitter.

An optical coherence tomography (OCT) imaging tool including an optical waveguide having a proximal end and a distal end, at least a portion of the optical waveguide disposed at the distal end of the optical waveguide having an increased elasticity than a proximal portion of the optical waveguide; a sheath surrounding at least a portion of the optical waveguide; and an optical probe coupled to the optical waveguide, the optical probe including: an optical element coaxially aligned with a central axis of the distal end of the optical waveguide, the optical element being configured to rotate about the central axis and redirect light emitted by the optical waveguide toward a circumference of the optical probe from the central axis, and the focusing element being disposed within a housing.

The present invention relates to a non-invasive cardiac monitoring device that records cardiac data to infer a physiological characteristic of a person, such as arrhythmia or other vital signs. Some examples of the invention allow for long-term monitoring of physiological signals. Other examples allow for processing ECG data and PPG data to calculate pulse time of arrival. Some examples include a wearable cardiac monitoring device on the chest including ECG and PPG sensors for long term attachment to a mammal to detect cardiovascular signals for a long term.

Wearable devices for measuring health indicators such as bilirubin are provided. The device includes a skin-facing side including a circuit board. The circuit board includes a spectrometer integrated circuit, at least one light emitting diode (LED) configured to direct light at the subject's skin where the LED is operably connected to a power source, at least one photodetector configured to receive light reflected from the subject's skin, and a microcontroller configured to perform spectral subtraction of said reflected light.

A method of assessing a feature on a patient's skin surface includes capturing (i) an image of the patient's skin surface with a camera of a portable capture device and (ii) range information with an auxiliary range measurement device that is attached to the portable capture device. Based on the range information, a single range value can be determined between the capture device and the patient's skin surface. In some embodiments, a scale can be associated with the image based on the single range value.

A turbine (3) for a spirometer (1) comprises a hollow tubular body (5) containing a rotor (12) which is mobile around a longitudinal axis (K) of this tubular body (5) and two deflectors (11) placed at an intake opening (7A) and at an output opening (7B) of said body (5), the rotor (12) comprising small blades (14, 15) which are facing one another and being disposed between said deflectors (11), the deflectors comprising an annular body (25) and a fulcrum (21) disposed along a longitudinal axis of this annular body (25) coinciding with the longitudinal axis (K) of the tubular body (5), between said fulcrum (21) and said annular body (25) a plurality of blades (22) being provided which are integral with the fulcrum itself and with the annular body, said blades (22) delimiting a plurality of sectors (30) for the passage of air directed towards the rotor. Each blade (22) has a continuous surface development which is defined by a plurality of different sections of surface which have a curved, flat form, and are interconnected to one another, said blade having a flat end section of surface (45) in the vicinity of the rotor (12) which can direct the air output from the deflector orthogonally to a plane containing the longitudinal axis (K) of the tubular body, and orthogonally onto the small blades (14, 15) of said rotor (12).