VIOPTIX, INC. Patent applications |
Patent application number | Title | Published |
20140155716 | Light Wavelength Selection for Avoidance of Surgical Dyes - A tissue oximetry device utilizes at least three or at least four different wavelengths of light for collection of reflectance data where the different wavelengths are longer than 730 nanometers. The three or four wavelengths are utilized to generate a range of reflectance data suited for accurate determination of oxygenated hemoglobin and deoxygenated hemoglobin concentrations. The relatively long wavelengths decrease optical interference from certain dyes, particularly methylene blue and PVPI, which may be present on tissue being analyzed for viability and further enhance the generation of accurate reflectance data. The wavelengths are 760 nanometers, 810 nanometers, and 850 nanometers, or 760 nanometers, 810 nanometers, 850 nanometers, and 900 nanometers. | 06-05-2014 |
20140148662 | Tissue Oximetry Probe with Tissue Marking Feature - An intraoperative tissue oximetry device includes a tissue marker that includes one or more pens or one or more similar ink sources, such that the tissue marker can mark tissue according to oxygen saturation measurements made by the tissue oximetry device, thereby visually delineating regions of potentially viable tissue from regions of potentially nonviable tissue. | 05-29-2014 |
20140148661 | Tissue Oximetry Probe Geometry for Robust Calibration and Self-Correction - A sensor head for a compact oximeter sensor device includes light sources and light detectors. A compact oximeter sensor device implementation is entirely self-contained, without any need to connect, via wires or wirelessly, to a separate system unit. The sources and detectors are arranged in a circular arrangement having various source-detector pair distances that allow for robust calibration and self-correction in a compact probe. Other source-detector arrangements are also possible. | 05-29-2014 |
20140046152 | Wireless, Handheld, Tissue Oximetry Device - A system includes an enclosure having a processor and a memory coupled to the processor. The enclosure includes a display coupled to the processor where the display is visible from an exterior of the enclosure; and a battery within the enclosure coupled to the processor and the display. The enclosure includes a probe tip coupled to an exterior of the enclosure. The probe tip includes first, second, and third sensor openings. A first distance between the first and second sensor openings is different than a second distance between the first and third sensor openings. The enclosure includes code stored in the memory where the code is executable by the processor, and includes code to receive first data associated with the first and second sensor openings, code to receive second data associated with the first and second sensor openings, and code to perform SRS using the first and the second data. | 02-13-2014 |
20130324816 | Robust Calibration and Self-Correction for Tissue Oximetry Probe - A method for calibrating detectors of a self-contained, tissue oximetry device includes emitting light from a light source into a tissue phantom, detecting in a plurality of detectors the light emitted from the light source, subsequent to reflection from the tissue phantom, and generating a set of detector responses by the plurality of detectors based on detecting the light emitted from the light source. The method further includes determining a set of differences between the set of detector responses and a reflectance curve for the tissue phantom, and generating a set of calibration functions based on the set of differences. Each calibration function in the set of calibration functions is associated with a unique, light source-detector pair. The method further includes storing the set of calibration function in a memory of the self-contained, tissue oximetry device. | 12-05-2013 |
20130317331 | Monte Carlo and Iterative Methods for Determination of Tissue Oxygen Saturation - A method for determining oxygen saturation includes emitting light from sources into tissue; detecting the light by detectors subsequent to reflection; and generating reflectance data based on detecting the light. The method includes determining a first subset of simulated reflectance curves from a set of simulated reflectance curves stored in a tissue oximetry device for a coarse grid; and fitting the reflectance data points to the first subset of simulated reflectance curves to determine a closest fitting one of the simulated reflectance curves. The method includes determining a second subset of simulated reflectance curves for a fine grid based on the closest fitting one of the simulated reflectance curves; determining a peak of absorption and reflection coefficients from the fine grid; and determining an absorption and a reflectance coefficient for the reflectance data points by performing a weighted average of the absorption coefficients and reflection coefficients from the peak. | 11-28-2013 |
20100114301 | Vessel Right Sizer - An anastomotic device includes a tube and anastomotic coupler rings having vessel openings attached to each end of the tube. In an embodiment, the diameters of the vessel openings are different. | 05-06-2010 |
20100114293 | Multibranch Vessel Extender - An anastomotic device has a tube with three or more tube portions that are connected together. A first anastomotic coupler ring is attached to a first tube portion. A second anastomotic coupler ring is attached to a second tube portion. In an embodiment, a third anastomotic coupler ring is attached to a third tube portion. | 05-06-2010 |
20100114292 | Vessel Extender - An anastomotic device includes a tube and anastomotic coupler rings having vessel openings attached to each end of the tube. In an embodiment, the diameters of the vessel openings are the same. | 05-06-2010 |
20090326354 | Noninvasive Sensor Housing - A flexible sensor pad includes a cavity to hold a sensor unit with an attached cable. According to one aspect of the present invention, a light-shielding layer is coupled to a bottom surface of the sensor pad, surrounds the sensor unit, and extends past two sides of the sensor pad. A transparent adhesive layer is coupled to the light-shielding layer and extends past two sides of the light-shielding layer. Another light shielding layer is coupled to a top surface of the sensor pad and covers the sensor unit. The cable divides the sensor pad into a first side and a second side which are mirror images of each other. | 12-31-2009 |
20090292187 | Device for Assessing Ischemia in Nerve Root Tissue Using Oxygen Saturation - A retractor has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue being retracted by the retractor. The tip includes one or more openings for at least one source and detector. A specific implementation is a spinal nerve root retractor with an oximeter sensor. | 11-26-2009 |
20090149715 | Surgical Elevator Oximeter - A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue. | 06-11-2009 |
20080319290 | Tissue Retractor Oximeter - A retractor has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue being retracted by the retractor. The tip includes one or more openings for at least one source and detector. A specific implementation is a spinal nerve root retractor with an oximeter sensor. | 12-25-2008 |
20080316488 | Measuring Cerebral Oxygen Saturation - A device includes source and detector sensors. In a specific implementation, the device has two near detectors, two far detectors, and two sources. The two near detectors are arranged closer to the two sources than the two far detectors. A light-diffusing layer covers the two near detectors. The device may be part of a medical device that is used to monitor or measure oxygen saturation levels in a tissue. In a specific implementation, light is transmitted into the tissue and received by the detectors. An attenuation coefficient is first calculated for a shallow layer of tissue. The attenuation coefficient is then used to calculate an attenuation coefficient for a deep layer of tissue. | 12-25-2008 |
20080269621 | Diagnosing Peripheral Vascular Disease by Monitoring Oxygen Saturation Changes During an Ischemia Phase - Peripheral vascular disease is diagnosed through measurements of oxygen saturation. In a specific implementation, peripheral vascular disease is diagnosed based on changes in oxygen saturation in tissue. Ischemia is induced, and then measurements of changes in oxygen saturation in tissue are made. Based on changes in oxygen saturation during the induced ischemia phase, a diagnosis is provided of whether a patient has or does not have peripheral vascular disease. | 10-30-2008 |
20080269620 | Diagnosing Peripheral Vascular Disease by Monitoring Oxygen Saturation Changes During an Accumulation Phase - Peripheral vascular disease is diagnosed through measurements of oxygen saturation. In a specific implementation, peripheral vascular disease is diagnosed based on changes in oxygen saturation in tissue. Ischemia is induced, and measurements of changes in oxygen saturation in tissue are made. Based on changes in oxygen saturation during an accumulation phase, a diagnosis is provided of whether a patient has or does not have peripheral vascular disease. | 10-30-2008 |
20080269574 | Diagnosing Peripheral Vascular Disease by Monitoring Oxygen Saturation Changes During a Hyperemia Phase - Peripheral vascular disease is diagnosed through measurements of oxygen saturation. In a specific implementation, peripheral vascular disease is diagnosed based on changes in oxygen saturation in tissue. Ischemia is induced, and then measurements of changes in oxygen saturation in tissue are made. Based on changes in oxygen saturation during a hyperemia phase, a diagnosis is provided of whether a patient has or does not have peripheral vascular disease. | 10-30-2008 |