Disclosed is a radio antenna comprising a substrate of dielectric material; a ground plane of electrically conductive material on a first face of the substrate; a resonator for converting an incident electrical signal into an electromagnetic wave and for resonating at at least two different resonant frequencies. The resonator comprises at least three elements, each in the form of strips of conductive material and arranged on a second face of the substrate opposite the first face. A second element is electrically connected to the ground plane by means of a via passing through the substrate at a first end of the corresponding strip, forms an extension of the first element, and is electrically connected directly to the first element at a second end of said strip which is opposite the first end.

This special gut microbe and chemical substance sampling technology, utilizing swallowable capsules, is for purpose of determining roles gut contents play in some 52 of most costly, in lives and dollars, of diseases with their known origin in the human gut. Gut microbes and substances are collected, analyzed, medicinal substances and objects deployed, and special provisions for attracting, capturing and preserving certain strains of microbes, and means for perturbing the gut environment and immune system are all intended to research, discover, and ultimately find both the causes and cures for the most devastating human diseases, and in the process, create gut microbiome profiles.

A capsule device and a method for the capsule device remain in a very low power state and monitor whether it enters a desired section of the gastrointestinal track. The capsule device is coated with an enteric material that is expected to dissolve after it enters the small bowel. In the monitoring state, the capsule device captures a first image using the camera and the light source at a first frame rate substantially below a target frame rate. The capsule device compares first information related to the first image with second information related to a coating image corresponding to the coating. If the first information does not matches the second information, the capsule device declares that the coating has dissolved and the capsule device configures the camera to capture third images at the target rate after declaring that the coating has dissolved.

An optical isolation element is provided on an optical sensor comprising a light source, at least one photodetector, and indicator material that emits light that is detected by the photodetector when optically excited by the light source. The optical isolation element limits the optical paths by which light may be transmitted by the light source, thereby limiting exposure of the excitation light source to regions of interest. The optical isolation element also limits the optical paths by which light may be transmitted to the photodetector, thereby limiting exposure of the photodetector to light from extraneous sources.

This disclosure is directed to devices, systems, and techniques for dynamically adjusting a bio impedance measurement range. An example device includes a plurality of electrodes. The device also includes sensing circuitry configured to sense a bio impedance and processing circuitry. The processing circuitry is configured to apply an excitation signal to the sensing circuitry and, based on the application of the excitation signal, determine a sensed bio impedance value within a bio impedance measurement range. The processing circuitry is also configured to determine whether the sensed bio impedance value is within a predetermined portion of the bio impedance measurement range for a predetermined period of time and based on the sensed bio impedance value being within the predetermined portion of the bio impedance measurement range for the predetermined period of time, adjust the excitation signal.

An image pickup apparatus includes an image forming optical system which includes an aperture stop that sets an axial light beam, and a diffracting optical surface disposed at a position different from a position where the aperture stop is disposed, and an imager which is disposed on an image side of the image forming optical system, and has a light-receiving surface which is not flat and is curved to be concave toward the image forming optical system, wherein the diffracting optical surface satisfies the following conditional expression (1).

0.1<|DSD/TL|≦1.0  (1) where, TL denotes an actual distance on an optical axis of the image forming optical system, from a surface of incidence of the image forming optical system up to the light-receiving surface, DSD denotes an actual distance on the optical axis of the image forming optical system, from a position of the aperture stop up to the diffracting optical surface, and when a focal length of the image forming optical system is variable, conditional expression (1) is a conditional expression in a state at a wide angle end.

The present invention provides a device that can move inside a biological conduit such as an intestinal tract for sampling the content therein, and a process thereof. While moving along the intestinal tract, the device can continuously collect the content in the intestinal tract. One or more convoy belts having an adsorbent layer are configured to continuously absorb and preserve the collected intestinal content. The belt loaded with the sample may be used to establish a chemical, biochemical and microbiological spectrum along the length of the intestinal tract.

A system for monitoring digestive efficiency within the rumen of one or more ruminant animals comprises rumen boluses shaped and sized to be retained within the rumen dorsal sac and each comprising temperature, pH sensor, and redox sensors, and a wireless transmitter. A processor is arranged to derive from the sensor data one or more parameters indicative of animal digestive efficiency including any combination of one or more of hydrogen scale (rH), partial pressure of hydrogen (pp[H.sub.2]), oxygen fugacity (f(O.sub.2)) and free energy of the system (ΔG). A method and bolus are also claimed.

In one embodiment of the disclosure, a method of monitoring a fetus in utero is disclosed that includes implanting a medical device into a patient's uterus, collecting fetal data using the medical device, and transmitting, e.g., wirelessly, the fetal data from the medical device to a receiver. In another embodiment, a medical monitoring system is disclosed that includes a first device that is implantable into a patient's uterus for collecting fetal data, and a second device that is configured and dimensioned for connection with the first device such that the fetal data is wirelessly communicable from the first device to the second device.

An apparatus for measuring physiological parameters of a mammal subject includes a first sensor system and a second sensor system that are time-synchronized to each other and spatially separated. Each sensor system has a plurality of electronic components and a plurality of flexible and stretchable interconnects that are electrically connecting to different electronic components, and an elastomeric encapsulation layer at least partially surrounding the plurality of electronic components and the plurality of flexible and stretchable interconnects to form a tissue-facing surface and an environment-facing surface. The plurality of electronic components includes a sensor member for measuring at least one physiological parameter of the mammal subject, a system on a chip (SoC) having a microprocessor coupled to the sensor member for receiving data from the sensor member and processing the received data, and a transceiver coupled to the SoC for wireless data transmission and wireless power harvesting.