RADIO TELEMETRY

A throwaway, one-time use signal sensing and telemetric transmitting device for use such as in the care of medical patients requiring a monitoring of a physiological function such as the cardiac function of the patient. The device includes one-time use self-powering battery means, adhesive means for...     

A communication system that uses a separate single coaxial cable to link a nurse's station to each of a plurality of patient rooms is disclosed. Each cable carries DC message signals from the patient rooms to the nurse's station to alert the nurse on duty that her assistance is needed either on an emergency...     

A small self-contained sensor and transmitter assembly including a sensor for detecting physiological and bio-medical phenomena and a transmitter for transferring such data to a receiver for display and other use is disclosed. In one embodiment, the sensor is adapted to be secured within the axilla of...     

A physiological measurement system for electrically sensing heart activity of a plurality of patients and providing on a single display tube, divided into sections, one for each patient, composite displays consisting of an ECG waveform, a digital readout of heart rate, and permissible heart rate limits...     

A monitoring system is disclosed for producing an alarm at a central station when a monitored condition at a monitor station deviates beyond a predetermined limit. The monitor system is especially adapted for monitoring a vital function of plural patients in a hospital so that a single attendant is alerted...     

A remote ECG monitoring and telemetry system for use in a hospital equipped with a master antenna television cable system comprising a portable patient sensor/transmitter unit for deriving ECG information and for transmitting a first frequency signal modulated with the ECG information; a receiver/transmitter...     

A portable electrical device having both flashing light and/or sound transmitting means activated by a transducer so that the transducer or the entire assembly may be mounted in pressure sensitive contact with a pulsing area of a living body to convert pulses to visible light flashes or sound beats adjustable...     

Disclosed is a hospital patient monitoring and display system employing a number of bedside consoles, concealable from the patient and including input for various patient sensors such as ECG, pulse rate, patient temperature and blood pressure. The consoles are powered by a low voltage direct current...     

A foaling alarm adapted to be positioned around the withers and belly of a mare just behind the forearms and having, in the region of the withers, an RF transmitter, and a position sensing switch which energizes the transmitter when the mare lies down on her side in foaling position. The transmitter,...     

A comfort cushion for infants comprising in combination a fluid filled flexible elastic hermetically sealed infant supporting mattress; a pulsating fluid pump means having mattress inlet and outlet fluid conducting conduits communicating between the pump means and the mattress for circulating a substantially...     

A noninvasive, continuous monitoring device for measuring intraocular pressure without interference with vision or normal activity of the patient. A miniature, planar-faced pressure transducer is fixed in a protruding section of a compliant hydrogel ring which has been tooled to conform to the spherical...     

Disclosed herein is a bio-alarm security system particularly adapted for use in banks for activating an alarm during a robbery without the need for affirmative voluntary action by an employee which might be prevented by the person committing the crime. The system includes one or more pulse rate detectors...     

A wireless, surgically implantable pressure transducer for measuring pressure of fluid or tissue in a body chamber such as a brain ventricle of a patient suffering hydrocephalus or a head injury. The transducer includes an inductor and a capacitor connected in parallel to form a resonant L-C circuit....     

An induction powered implanted monitor for epidurally measuring intracranial pressure and telemetering the pressure information to a remote readout. The monitor utilizes an L-C oscillator in which the C comprises a variable capacitance transducer, one electrode of which is a small stiff pressure responsive...     

Surgical implements, surgical instruments, surgical sponges, surgical implantable devices and indwelling therapeutic devices and materials may be detected within the human body or other area of interest by incorporating or adding a radiofrequency transponder. Non-linear mixing of two or more frequencies...     

A patient monitoring apparatus employs transmitter and receiver units. The transmitter unit is typically mounted on the patient and is equipped with an inflatable blood pressure cuff having an associated acoustic stethoscope pickup piece for detecting the systolic and diastolic pressure related sounds...     

An externally generated myriametric frequency magnetic carrier signal is resonantly reflected by a tuned coil in an implant. The lagging phase angle of the reflected signal is modulated at very low power by varying the impedance across the tuned coil in accordance with a data input signal. An external...     

An implantable programmable medication infusion system comprises an implantable portion (2) having a medication reservoir (10) at below body pressure and isolated at its input from the body in which it is implanted by an antechamber (8) the pressure integrity of which is checked before filling the medication...     

A transmitter for a medical prosthesis which is highly efficient, and also permits rapid starting and stopping so that the same coil can be used for both transmission and reception without undue delays between the two modes of operation. During transmission, a tuned circuit, consisting of the coil and...     

A telemetering intracranial pressure transducer comprises an airtight casing member housing a pressure-electric transducer for detecting an intracranial pressure, a pressure-receiving layer disposed in contact with the pressure-electric transducer and in pressed engagement with the dura under the skull,...     

An externally generated myriametric frequency magnetic carrier signal is resonantly reflected by a tuned coil in an implant. The lagging phase angle of the reflected signal is modulated at very low power by varying the impedance across the tuned coil in accordance with a data input signal. An external...     

Provision is made to monitor for vital signs, such as respiratory activity and cardiac activity. The monitoring equipment is mounted by a belt to a person being monitored. Multiple Inductance coils carried by the belt move relative to each other in response to breathing, and the associated mutual inductance...     

A system consisting of a multiplicity of separate modules which collectively perform a useful biomedical purpose; the modules communicating with each other without the use of interconnecting wires. All modules may be intracorporeal or body mounted extracorporeal or some modules may be intracorporeal...     

A surgically implantable connector for a transcutaneous driving system comprised of a case having a base and a lid which are shaped to provide a cavity between them with a first elastomeric pad for supporting a first set of electrical contacts in the cavity which contacts mate with a second set of electrical...     

An implantable intracranial pressure (ICP) telemetry transmitter. Data transmission is accomplished by means of a radio frequency (RF) link coupled to a silicon piezoresistive pressure transducer. Electrostatic bonding of this transducer onto a tubular glass support provides long-term stability, stress...     

In medical apparatus important parameters are monitored by special systems. In case of irregularities, signaling urging remedy occurs. The signal is to be limited to the persons monitoring the apparatus to the extent possible and should not disturb persons not involved or present in the same room, from...     

A telemetering system for remotely measuring a physical parameter of an object such as a human or animal includes a sensor device affixed to the object including a tuned circuit and a parameter sensitive device coupled for altering the figure of merit of energy storage (Q) of the tuned circuit in response...     

There is disclosed a bridge circuit which finds particularly advantageous use in medical prostheses which can be programmed externally and which can transmit telemetry signals. The entire circuit is implemented on a single CMOS integrated circuit. Depending upon the values of two control bits, the bridge...     

An acquisition circuit for a cardiac pacer includes an oscillator for producing an externally generated magnetic signal at a first predetermined frequency. An implantable cardiac pacer has a tuned inductor coil to be responsive to the magnetic signal for developing an induced signal with a phase-shift....     

A telemetry system is provided for communicating with an implanted pacer. A patient's coil is positioned on the patient substantially overlying the implanted pacer. An FM oscillator generates a waveform which varies in frequency and amplitude in response to the telemetry signals from the implanted pacer....     

A personal security alarm characterized by a hand unit transmitter and a torso unit receiver/alarm. The transmitter of the hand unit is actuated by a button positioned at the palm of the user. As the user either voluntarily or involuntarily clutches his or her fist, the actuator button is depressed to...     

An out-of-range monitor and alarm system that may be used by a convalescent home or the like to alert an attendant in the home that a supervised person has walked beyond a predetermined prescribed distance. The system includes a base unit that transmits a signal at a frequency F1 to a receiver in a mobile...     

An estrus detection system using a transponder mounted to an animal and including a motion sensor. The motion sensor produces a series of pulses as a function of movement. A counting circuit is energized by the sensor. A storage circuit retains the count together with an identification code unique to...     

This invention relates to apparatus for monitoring the pulse rate of a human or animal subject, including a pulse detector for attachment to the subject which produces a pulse signal corresponding to the pulse of the subject, a transmitter which transmits the pulse signal to a remote signal analyzer...     

The endoscope assembly of the present invention can transmit an imae formed by means of a pickup element of an object to be observed as image information. It is composed of signal conversion means for converting the output from the pickup element into image signals, modulation means for modulating the...     

An electromedical system comprising a temperature sensor which can be placed in the ear of a pig. According to the invention the temperature sensor is constituted by a substantially circular resilient element fixable in the auditory meatus, and which via a conductor, e.g. a wire is connected to an outwardly...     

An out-of-range monitor and alarm system that may be used by a convalescent home or the like to alert an attendant in the home that a supervised person has walked beyond a predetermined prescribed distance. The system includes a base unit that transmits a first signal to a receiver in a mobile unit carried...     

A monitoring device comprising, a belt having a sufficient length for placement around a patient's body, a conductive electrode on the belt for contacting the patient's skin, and a device for securing the belt about the patient's body. The monitoring device has a transmitter of electromagnetic waves...     

The cortical hearing aid is an instrument that produces the sensation of hearing by electrical stimulation of the neurons in the auditory cortex and/or auditory nerve trunk (eighth cranial nerve). The device employs an oscillator that generates a radio frequency carrier at a selected frequency within...     

An improvement to an implantable amplitude modulated frequency receiver wherein a resistor in the demodulator portion of a prior art receiver, which provides a discharge path for a capacitor, is replaced with an active circuit portion that includes a semiconductor device that provides the discharge path...     

Apparatus is provided for improving the coupling between an external inductive transmitting coil and an internal inductive receiving coil to transmit power and/or data to the receiving coil from the transmitting coil. The structure includes a coupling coil inductively coupled to the transmitting coil...     

A telemetry system for communicating with a tank circuit contained in a pacer implanted in a patient includes a telemetry coil and a capacitor connected to the telemetry coil for forming a resonant tank. The telemetry coil is positionable externally on the patient's skin substantially overlying the implanted...     

A telemetry system for transmitting digital data from an implanted pacer to an external programming/receiver unit includes a voltage-controlled pulse generator having an output period proportional to its input voltage magnitude. The external receiver unit includes a pulse period detector to generate...     

A water-proof device for a transmitter is disclosed which comprises a plurality of water-proof electrodes attached to the surface of a man for deriving minute electrocardiogram signals. A water-proof plug receives a plurality of electrode leads and, a connector for connects the leads to, a transmitter....     

An observation apparatus for an artificial organ such as an artificial heart includes a first casing having the artificial heart and a video signal generating and transmitting apparatus therein and a second casing independent and remote from the first casing having a video signal receiving and display...     

A housing assembly for electronic circuitry that can be used subcutaneously. The housing assembly comprises container and base subassemblies each comprising a ceramic portion and a continuous metal sealing flange having a first portion brazed to the ceramic portion around its periphery, and a second...     

An electrode array for implantation in a human cochlea. The array includes a spiral-shaped resilient carrier which generally conforms to the shape of the scala tympani of the cochlea. The carrier supports eight electrode pairs, with each electrode having an associated lead. The leads are arranged in...     

Disclosed is a device for detecting temperatures which differ from a variable norm of particular use in detecting elevated temperatures in cattle. The device, one being attached to each animal, includes a square wave generator, an identification number encoder for outputting the identification number...     

Body activity sensors, such as termperature, motion, respiration and/or blood oxygen sensors, are positioned in a patient's body outside the pacer capsule. These sensors wirelessly transmit body activity signals, which are processed by circuitry in the heart pacer, such that a stimulation pulse generator...     

A telemetry receiver for demodulating subcarrier frequencies is disclosed. The flexibility of the receiver permits it to decode signals from a wide variety of transmitters. In the preferred embodiment, a biomedical digital telemetry subcarrier demodulator employs microprocessor control of a variable...     

A defibrillator electrocardiogram (ECG) interpreter for indicating whether to treat a patient with a defibrillator. A sequence of digitized samples from a patient's ECG is periodically tested to identify asystole, noise, no-treat and treat conditions. A single result then is stored for each period. The...     

Apparatus and method for remotely detecting super-low frequency (SLF) and extremely-low frequency (ELF) signals eminating from human subjects. The SLF/ELF signals are composed of various wavelengths and amplitudes which correspond to the subjects internal physiological processes. The apparatus includes:...     

Means for transmitting an FM radio signal carrying an audio test signal to a preselected one of two receivers in the headset of a patient, together with FM signalling means carried by the patient to transmit signals to the audiometer indicating which of the patient's ears received the test signal to...     

An electrocardiographic monitoring system in which the heart-signal sensing electrodes are each coupled to the heart-signal monitor/recorder by respective wireless transmitters and corresponding respective receiving wireless receivers in a base unit, each transmitter-receiver combination operating (in...     

A patient monitoring system includes a plurality of leads adapted to be coupled to a patient for generating individual ECG data voltage signals. A switching matrix couples the leads to a plurality of differential circuits for coupling selected pairs of the ECG voltage signals to each of the differential...     

An implanted programmable ambulatory electrocardiography (AECG) patient monitoring device that senses and analyzes electrocardiographic signals from at least one subcutaneous precordial sensor chronically and frequently to detect electrocardiogram and physiological signal characteristics predictive of...     

A respiration transducer apparatus for monitoring respiratory movement in patients is disclosed which includes a transducer for detecting respiratory movement in the patient's body. The transducer includes a first inductor adapted to be positioned adjacent a portion of the patient's body and a second...     

There is provided an aritifical dental root to be implanted into a jawbone comprising a sensor capable of contacting body fluids and a radio transmitter for transmitting electric signals representing the physical and/or chemical values of the body fluids obtained by the sensor to an external receiver....     

A device which measures ethanol levels expelled through a subject's skin to monitor blood alcohol level at regular or random intervals. The device differentiates between a positive reading caused by an external, interferant, source of ethanol and a positive reading caused by consumption of alcohol. The...     

A patient monitoring system is provided which includes a monitor and a transmitter which can optically communicate with each other. The monitor receives analog physiological data from a patient and converts the analog data to a digital optical signal which is sent to the transmitter optically. The transmitter...     

A passive transponder includes a receive antenna for receiving an input signal. A frequency generator and modulator receives the input signal and outputs a data carrier signal having a frequency independent of the input signal frequency. A programmable memory and thermistor are provided to produce user...     

A temporary pacemaker combines technologies of the implantable pacemaker, the waterproof watch, with a separate remote-control programming unit that communicates with the pacemaker via IR radiation. An LCD readout on the temporary pacemaker continuously reports on current settings, and is monitored periodically,...     

A regenerative electrical stimulation device comprising a stimulator portion to be surgically implanted in patients and an external controller portion. The implanted stimulator portion provides electrical stimuli of selected parameters to damaged nerve tissue to stimulate regeneration and/or healing...     

An implantable microstimulator system employs a miniature ferrite-cored coil contained with an hermetically sealed housing to receive control signals and operating power from an RF telemetry system. The tiny coil receives the electromagnetic energy which is transmitted from a non-implantable transmitter...     

A system for detecting the position of an object within a body of biological tissue includes a resonant circuit attached to the object and a probe including a receiver/transmitter that operates at the resonant frequency of the object. The resonant circuit rings in response to pulses transmitted from...     

A patient monitoring system includes a plurality of leads adapted to be coupled to a patient for generating individual ECG data voltage signals. A switching matrix couples the leads to a plurality of differential circuits for coupling selected pairs of the ECG voltage signals to each of the differential...     

A cardiorespiratory alert system is described which comprises a patient unit which communicates with a caregiver unit, via an optional central base station in a Hospital Configuration, or via a base station in an Alternate Site/Home Configuration. A number of techniques are employed, including 1) withholding...     

A surgical system comprises an endoscopic instrument, a camera on the endoscopic instrument for obtaining video images of internal body tissues inside a patient's body via the endoscopic instrument, and a transmitter operatively connected to the camera for transmitting, over a telecommunications link...     

A wireless monitoring system including at least one first unit for sensing motion and for directly radiating signals corresponding to the sensed motion. Additionally, the system includes a second unit for detecting signals radiated by the first unit and for converting the detected signals into electronic...     

A cardiac pacemaker improved to reduce the weight and size and to unburden the wearer of the pacemaker, while ensuring safe transmission of signals. The cardiac pacemaker includes a cardiac pacemaker main body 100 having at least two electrodes for detecting cardio-information, a control section for...     

An electrical circuit comprising means for receiving an input signal for encoding or modulating and amplification. Multiple amplification stages including at least one transconductance amplifier are provided. There are means for having the input signal modulate the oscillator constituted by the multiple...     

A method and apparatus for performing patient monitoring which interfaces a telemetry monitor with a standard portable computer (such as a laptop computer, palmtop computer or personal digital assistant) with the display and the keyboard or other device of the portable computer being utilized to provide...     

An infra-red transmitter comprising transducer means (10) for sensing heart beat and producing a detectable electrical signal (10P); infra-red transmission means (28) that is energisable from a battery (30); signal processing means (14-20) that is responsive to transducer output signals representative...     

A probe system for use in carrying out inspections in an enclosed, non-conducting environment, such as an endoscope for use in carrying out internal inspections of a human or animal patient, comprises sensing coils (7) mounted at spaced positions along the probe (6) for movement with the latter and a...     

A wireless transmitter module for use in a system for monitoring at least one physiological condition of a subject. The transmitter module includes a housing and an electrode patch preferably having three closely spaced electrodes provided on a first surface thereof. The first surface of the patch is...     

A medical communication system including (A) a sensor worn on a living body to obtain physical information of the body, and generating a signal representing the physical information; (B) a first device disposed on a side of the living body, receiving the physical information signal from (A) the sensor,...     

The invention relates to a telemetric transmitter unit comprising electrodes for placement against the body of a person wearing the telemetric transmitter unit for detecting heartbeat signals of said person. The plastic members joining the transmitter and electrodes together so as to form an integrated...     

A passive transponder includes a receive antenna for receiving an input signal. A frequency generator and modulator receives the input signal and outputs a data carrier signal having a frequency independent of the input signal frequency. A programmable memory and thermistor are provided to produce user...     

A device capable of recording a bioelectrical signal under the normal living conditions of a living body is arranged so that an extremely real record can be obtained not only during a walk, a meal or a sleep of the living body but also even during bathing. A base member having flexibility which permits...     

The invention relates to a telemetric transmitter unit, by means of which signals detected by one electrode or several electrodes connected to the transmitter are wirelessly transmittable to a separate receiver by using a magnetic proximity field. The transmitter electronics (6) is coupled in a fixed...     

A physical-information detecting system including a first detector which detects a first physical information of a first living subject and generates a first physical-information (PI) signal representing the detected first physical information; a second detector which detects a second physical information...     

Apparatus for tracking and recovering humans utilizes an implantable transceiver incorporating a power supply and actuation system allowing the unit to remain implanted and functional for years without maintenance. The implanted transmitter may be remotely actuated, or actuated by the implantee. Power...     

An internal identification apparatus for animals surely stays in a ruminant without injuring the ruminant. After the ruminant is slaughtered, the apparatus is easily located and collected. The apparatus stays in the first or second stomach of the ruminant. The apparatus has a casing (1) made from material...     

A system for monitoring the physical and chemical properties of urine in the urinary bladder and functioning of the bladder. For example, the system can include sensors for pressure, temperature, pH, various different chemical constituents of urine, sodium, potassium, glucose, drug markers, drug metabolites,...     

The present invention provides for a communication system for conveying biomedical data between a plurality of patient monitors and a centralized base station. The communication system includes a plurality of base transceivers within the base station. Each of the base transceivers is coupled with a dedicated...     

An implantable cardioverter/defibrillator device is implemented to be selectively non-invasively upgraded from time to time after implantation to enable the device to provide additional therapy for arrhythmia treatment as the patient's need for such treatment undergoes change. The device is adapted to...     

A host monitor device 26 disposed in an emergency call center 12 displays, on an image display 82 thereof, an ID code identifying a subscriber 20, a symbol representing an emergency call from the subscriber 20, a symbol indicating that a portable transmitting device 22 is worn, or not worn, on the subscriber...     

The implantable, electrically operated medical device system comprises an implantable radio frequency (RF) receiver and an external RF transmitter. The receiver has a receiving antenna and electronic circuitry coupled to the receiving antenna and includes a microcontroller having an output, a non-volatile...     

A system for monitoring and computer analyzing select physiological variables of a patient in real time in order to alert medical personnel to the need for medical treatment or automatically administering such treatment under computer control. Such physiological variables monitored by the system may...     

A data link and protocol for a subcutaneous, tissue stimulating device. While stimulation is taking place, under control of pulses whose durations in a data frame determine the stimulation pulse widths, data is actually transmitted and processed for determining the parameters of the next stimulation....     

An improved cardiotachometer comprises a transmitting section and a receiving section. The transmitting section includes a detection circuit for detecting electrocardiographic signals obtained from a pair of electrodes mounted near the heart of a human body. The transmitting section processes and transmits...     

A method for monitoring vital signs of a human or animal subject includes clothing the subject in an elastically deformable shirt or undershirt, removably attaching a carrier carrying a sensor to the shirt or undershirt, adjacent the thoracic and abdominal regions of the subject, sensing elastic deformations...     

A new Personal Alarm System for detecting whether a person is in an emergency situation by measuring blood pressure, pulse and temperature, and thereafter transmitting such information and location through cellular relay stations to a home receiver where the proper authorities may be alerted. The inventive...     

An improvement of heart beat transmitter includes a circuit board, a pair of conductive rubber posts, a housing, a pair of fastening straps and a pair of conductive rubber plates. The housing is provided with a metal plate and installs the conductive rubber plate jointly with the fastening strap. The...     

A wireless patient monitoring apparatus uses an optical signal to transmit information from a transducer to a photodetector of an optical receiver. The photodetector converts the optical signal to an electrical signal which is then provided to monitoring and analysis instrumentation. Signals which are...     

A personal emergency-reporting system for recognizing the site of an emergency with simultaneous warning of the nearest emergency physician/medical personnel. A portable patient data unit is provided which contains a satellite-supported global positioning system, which communicates with a patient data...     

A portable, three-way wireless communication system provides a patient with a direct link to a caregiver, as well as a central facility such as a nurse's station. The system is comprised of a patient unit, a caregiver unit and a central station. The patient unit is designed to be small and portable,...     

A system and method for generating bio-active frequencies with precision to within 0.001 Hz. These precise frequencies are used to kill microorganisms and viruses and to enhance tissue regeneration. In addition, they may be used in various commercial and industrial applications, such as food processing....     

An integrated medical diagnostic center configured to provide emergency communications, immediate measurement of various physiological conditions and provision for administration of emergency treatment, the integrated medical diagnostic center comprising a cabinet including a plurality of compartments...     

An alert button, comprising a miniature housing having a sensor surface. A battery supplies power to a transmitter through a touch sensor. Upon the presence of an emergency situation, the sensor surface is touched to activate the touch sensor. The activated touch sensor then supplies power from the battery...