Abstract: An electronic device includes a light adjusting component. The light adjusting component includes a panel, a first quarter wave plate and a second quarter wave plate. The panel includes a first substrate, a second substrate and a medium layer disposed between the first substrate and the second substrate. The first quarter wave plate is disposed on a first side of the panel, wherein the first quarter wave plate has a first retardation amount. The second quarter wave plate is disposed on a second side of the panel opposite to the first side, wherein the second quarter wave plate has a second retardation amount. The first retardation amount is different from the second retardation amount.

Abstract: An oximeter measures oxygen saturation for two or more different tissue depths and shows these results on a screen. A probe of the oximeter has multiple different distances between source and detector sensors. One probe implementation has fixed sensor positions. Other implementations include sensors on a moveable platform or openings to accept sensors, which allow a user to vary a distance between sensors.

Abstract: 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.

Abstract: 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.

Abstract: The present disclosure provides compounds that can inhibit the type III secretion system (TTSS) to decrease the pathogenesis of gram-negative bacteria. These compounds may have wide applications for treating bacteria diseases caused by gram-negative bacteria in a host species, including but not limited to, plants and animals. The present invention further relates to compositions that inhibit pathogenesis of gram-negative bacteria without killing the bacteria. Methods relating to preventing and/or treating infection of a host species by bacterial pathogens are also provided herein.

Abstract: 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.

Abstract: An augmented reality electronic device includes a light adjusting component. The light adjusting component includes a panel and a first quarter wave plate. The panel includes a first substrate, a second substrate and a medium layer disposed between the first substrate and the second substrate. The first quarter wave plate is disposed on a first side of the panel.

Abstract: A sensor probe has a connector and the connector's corresponding receptacle on a console have security mechanisms that ensure that the connector and the receptacle are properly connected and mated. The connector and receptacle can have physical security features that block insertion of the connector into the receptacle if they are not aligned in a proper orientation. The console can also include a software security feature that allows optical measurements from the sensor probe only if the connector of the sensor probe and receptacle on the console are connected properly. An adapter can also be used to convert a conventional receptacle mounted on a console into a receptacle with security features.

Abstract: Devices detect and assist in the avoidance of blood vessels during a surgical procedure—to avoid rupturing these blood vessels. Devices may be any penetration sensor device (such as a dilator sensor device, hollow needle sensor device, or trocar sensor device) that penetrates the skin and subcutaneous layers to reach a target location inside the body. The device includes a sensor probe which can make optical measurements to determine various parameters of the tissue at the tip of the sensor probe. These parameters may include an optical signal level returned from tissue contacting the tip of the sensor probe, an oxygen saturation level of the tissue, a total hemoglobin concentration, a blood flow, and a pulse. Based on these parameters, the presence or absence of a blood vessel at the tip of the device can be determined while the device travels towards the target location for surgery.

Abstract: A surgical elevator medical instrument has an oximeter sensor at its tip. The oximeter sensor allows measuring of oxygen saturation of a tissue. The tip has a blade including a first side and a second side. Optical or electronic components of the oximeter sensor are mounted or attached to the first or second side, or both. In an implementation, openings can pass from the first side to the second side. The openings can be unconcealed on one side of the blade.

Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.

Abstract: A head mounted electronic device includes a dimming module. The dimming module has a normal direction. The dimming module has a first transmittance T1 in the normal direction and a second transmittance T2 in an oblique direction. An included angle between the oblique direction and the normal direction is 60 degrees. The head mounted electronic device satisfies: [(T1-T2)/T1]*100%<50%.

Abstract: 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.

Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.

Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.

Abstract: A bone oximeter probe includes an elongated member and a sensor head at an end of the elongated member to make measurements for a bone. The measurements can indicate the viability or nonviability of the bone. In an implementation, the probe is advanced through an incision in soft tissue, towards the underlying bone, and positioned so that the sensor head faces the bone to be measured. Optical signals are sent from the sensor head and into the bone. The bone reflects some of the optical signals which are then detected so that measurements for the bone can be made. Some of these measurements include an oxygen saturation level value, and a total hemoglobin concentration value of the bone.

Abstract: A PET hydrolase having high enzymatic activity is disclosed. The PET hydrolase has a modified amino acid sequence of SEQ ID NO: 2. The modified enzyme has improved PET-hydrolytic activity, thereby obtaining the high-yield and high-activity PET hydrolase, and enhancing the industrial application value of the PET hydrolase.

Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.

Abstract: This disclosure provides an estimation method applied to a state of health of a battery, which executes a recharging to a battery when a battery voltage is lower than a threshold voltage. During the recharging, a battery state of health estimation procedure is performed from a first depth of discharge detection point to a second depth of discharge detection point. During the battery state of health estimation procedure, a voltage difference between a current battery voltage and an initial open-circuit voltage is accumulated over time from the first depth of discharge detection point to the second depth of discharge detection point to obtain an accumulation of current sampled voltage difference. An accumulation of estimated DC internal resistances can be equivalently obtained by the accumulation of current sampled voltage difference. Afterwards, the state of health of the battery can be determined based on the accumulation of estimated DC internal resistance.

Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.