Disclosed is a system for detecting an emotional state of a companion animal, including: a state information collecting device comprising a microphone and sound sensor which collects a sound of the companion animal, a temperature sensor which collects a temperature of the companion animal, and an acceleration sensor which collects an activity of the companion animal, the state information collecting device being worn on a body of the companion animal; and a companion-animal emotion analysis server configured to extract characteristic information of sound information of the companion animal transmitted from the state information collecting device, select emotional state information of the companion animal corresponding to the extracted characteristic information from a database, and transmit the selected emotional state information of the companion animal through a wireless communication network to a portable terminal of an animal guardian.

An end effector for use with a surgical stapling instrument is disclosed. The end effector comprises a first jaw, a second jaw movable relative to the first jaw to grasp tissue therebetween, and a staple cartridge. The staple cartridge comprises staples deployable into the tissue. The end effector further comprises a magnetic sensor configured to measure a parameter indicative of an identifying characteristic of the staple cartridge, an impedance sensor configured to measure a parameter indicative of an impedance of the tissue, and a processing unit in communication with the impedance sensor. The processing unit is configured to determine a property of the tissue based on an output of the impedance sensor.

Described herein are systems and methods for performing optical signal analysis and lesion predictions in ablations. A system includes a catheter coupled to a plurality of optical fibers via a connector that interfaces with a computing device. The computing device includes a memory and a processor configured to receive optical measurement data of a portion of tissue from the catheter. The processor identifies one or more optical properties of the portion of tissue by analyzing the optical measurement data and determines a time of denaturation of the portion of tissue based on the one or more optical properties. A model is created to represent a correlation between lesion depths and ablation times using the time of denaturation, the one or more optical properties, and the predetermined period of time. A predicted lesion depth for a predetermined ablation time is generated using the model.

A biological sound sensor to be used in contact with a skin of a living body, and includes a casing that has an opening in a face on the side facing the skin of the living body, a double-sided adhesive membrane having a first surface and a second surface, the second surface closes the opening by adhering to the face of the casing and the first surface adheres to the skin when collecting a biological sound produced in the living body. A microphone is arranged in the casing and picks up the biological sound. The double-sided adhesive membrane has a one-material portion, made of the first adhesive material, through the double-sided adhesive membrane from the first surface to the second surface.

In an example, a method to monitor blood pressure of a subject includes: generating a first signal representing cardiac electrical activity of the subject using a first sensor of a wearable system; generating a second signal representing cardiac photonic activity of the subject using a second sensor of the wearable system; generating a third signal representing cardiac mechanical activity of the subject using a third sensor of the wearable system; determining from the third signal a time period during which the first and second signals are likely clean; extracting one or more features from portions of two or more of the first, second, or third signals corresponding to the time period, the one or more extracted features including at least one of a PTT, a PAT, or BVE features; and determining a current blood pressure of the subject based on the one or more extracted features.

Methods and systems for monitoring health status of chronically ill people are provided. An example system includes a wearable device with sensors, with the wearable device being designed to be worn on a wrist of a patient. The wearable device is operable to continuously collect, via sensors, sensor data from a single place on body of the patient. The sensor data are processed to obtain electrocardiogram data and photoplethysmogram data. The electrocardiogram data and the photoplethysmogram data are analyzed to obtain medical parameters associated with a chronic disease. Based at least partially on the changes in the medical parameters over time, a progression of the at least one chronic disease can be determined. Based on the progression, messages regarding the current health condition are sent to the patient. The messages include advice to take medicine or contact a medical professional if a chronic condition is worsening.

Described embodiments include a system that includes an electrical interface and a processor. The processor is configured to receive, via the electrical interface, an electrocardiographic signal from an electrode within a heart of a subject, to ascertain a location of the electrode in a coordinate system of a computerized model of a surface of the heart, to select portions of the model responsively to the ascertained location, such that the selected portions are interspersed with other, unselected portions of the model, and to display the model such that the selected portions, but not the unselected portions, are marked to indicate a property of the signal. Other embodiments are also described.

Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device, a reference sensor device, and at least one orthopedic fixture. The surgical orientation device, reference sensor device, and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, or otherwise to assist in an orthopedic procedure(s).

A biocompatible medical device may include an electrochemical sensor including a common reference electrode; at least one counter electrode; and a work electrode platform comprising a plurality of respective work electrodes, each respective work electrode electrically coupled to the common reference electrode and comprising a respective reagent substrate configured to react with a respective analyte to produce a respective signal indicative of a concentration of the respective analyte; and processing circuitry operatively coupled to the electrochemical sensor, and configured to receive from the electrochemical sensor a plurality of signals from the plurality of respective work electrodes; identify the respective signal corresponding to a respective selected work electrode; and process the identified signal to determine the concentration of the respective analyte associated with the respective selected work electrode.

A method of operating an optically pumped magnetometer (OPM) includes directing a light beam through a vapor cell of the OPM including a vapor of atoms; applying RF excitation to cause spins of the atoms to precess; measuring a frequency of the precession; for each of a plurality of different axes relative to the vapor cell, directing a light beam through the vapor cell, applying a magnetic field through the vapor cell along the axis, applying RF excitation to cause spins of the atoms to precess, and measuring a frequency of the precession in the applied magnetic field; determining magnitude and components of an ambient background magnetic field along the axes using the measured frequencies; and applying a magnetic field based on the components around the vapor cell to counteract the ambient background magnetic field to facilitate operation of the OPM in a spin exchange relaxation free (SERF) mode.