Abstract: A finger-mounted device may include finger-mounted units. The finger-mounted units may each have a body that serves as a support structure for components such as force sensors, accelerometers, and other sensors and for haptic output devices. The body may have sidewall portions coupled by a portion that rests adjacent to a user's fingernail. The body may be formed from deformable material such as metal or may be formed from adjustable structures such as sliding body portions that are coupled to each other using magnetic attraction, springs, or other structures. The body of each finger-mounted unit may have a U-shaped cross-sectional profile that leaves the finger pad of each finger exposed when the body is coupled to a fingertip of a user's finger. Control circuitry may gather finger press input, lateral finger movement input, and finger tap input using the sensors and may provide haptic output using the haptic output device.

Abstract: A finger-mounted device may include finger-mounted units. The finger-mounted units may each have a body that serves as a support structure for components such as force sensors, accelerometers, and other sensors and for haptic output devices. The body may have sidewall portions coupled by a portion that rests adjacent to a user's fingernail. The body may be formed from deformable material such as metal or may be formed from adjustable structures such as sliding body portions that are coupled to each other using magnetic attraction, springs, or other structures. The body of each finger-mounted unit may have a U-shaped cross-sectional profile that leaves the finger pad of each finger exposed when the body is coupled to a fingertip of a user's finger. Control circuitry may gather finger press input, lateral finger movement input, and finger tap input using the sensors and may provide haptic output using the haptic output device.

Abstract: An automatic tachycardia detection assembly to be implanted in a person for stimulating the heart upon detection of abnormal tachycardias. The assembly includes an atrial sensor (16) and ventricular sensor (18) for sensing activity within the atria and ventricles of the heart, respectively. Also included is an electrical stimulator or cardioverter/defibrillator (20, 22) for therapeutically stimulating the heart upon detection of abnormal tachycardias. The assembly (10) includes a housing (12) enclosing a control circuit (14) to be implanted within a person responsive to the sensors (16, 18) controlling the cardioverter/defibrillator (20, 22). The control circuit (14) distinguishes sinus tachycardia from ventricular tachycardia having 1:1 VA conduction by comparing the measured tachycardia AV interval to a predetermined sinus AV interval.