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A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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| Number | Title | Issue Date |
| 4243044 | Coupling circuit with driven guard In signal measurement circuits which are referred to a floating ground and which derive their input signals from electrodes attached to a patient's body, the effects of common mode potentials on the patient's body are minimized without requiring any patie... | 01/06/1981 |
| 4243045 | Method and apparatus for the suppression of interference signals in a useful signal In an exemplary embodiment, the interference signals can occur as a mixture consisting of narrow interference pulse peaks of high amplitude and interference hum. It is desirable that such interference peaks and interference hum in a useful signal be suppr... | 01/06/1981 |
| 4235242 | Electronic circuit permitting simultaneous use of stimulating and monitoring equipment An electronic interface module for use with patient monitoring equipment which allows use of the monitoring equipment at the same time that the patient is being treated through the application to his body of electrical stimulating pulses or the like. Body... | 11/25/1980 |
| 4204225 | Real-time digital X-ray subtraction imaging Difference images, derived from an X-ray image of an anatomical subject, are produced in real time by directing X-rays through the anatomical subject to produce an X-ray image, converting the X-ray image into television fields comprising trains of analog ... | 05/20/1980 |
| 4202351 | Identification means for electrocardiographic monitoring instruments or the like An identification means is disclosed for use with lead wires of electrocardiographic monitoring instruments or the like. The identification means includes a terminal body member secured at one end of a lead wire and has a peripheral recess extending subst... | 05/13/1980 |
| 4200109 | Coupling circuit with driven guard In signal measurement circuits which are referred to a floating ground and which derive their input signals from electrodes attached to a patient's body, the effects of common mode potentials on the patient's body are minimized without requiring any patie... | 04/29/1980 |
| 4194511 | Detecting capacitively coupled ECG baseline shift In an electrocardiographic system there is a multielement electrode at two skin locations for providing an ECG signal of negligible magnitude between elements because of the close spacing while the pair of elements are sufficiently separated so that the m... | 03/25/1980 |
| 4191195 | Coupling circuit with driven guard In signal measurement circuits which are referred to a floating ground and which derive their input signals from electrodes attached to a patient's body, the effects of common mode potentials on the patient's body are minimized without requiring any patie... | 03/04/1980 |
| 4176660 | Disposable esophageal and tracheal multi-probes A disposable esophageal probe incorporating the capability to detect ECG waveforms, heart sounds and to measure body core temperature is described. The probe incorporates a plastic tube with electrically conductive pathways embedded in its side walls ther... | 12/04/1979 |
| 4173221 | EKG cable monitoring system An EKG cable assembly includes monitoring circuitry for ascertaining whether a plurality of test leads, including a plurality of signal leads and at least one reference lead, are properly connected and operating. One embodiment of the circuitry includes a... | 11/06/1979 |
| 4164215 | Electrode switching means for use in a defibrillator A defibrillator is described having separate amplifiers for the paddles and the ECG electrodes and means for supplying cardiographic signals to an output amplifier from the amplifier associated with the ECG electrodes when they are properly attached to th... | 08/14/1979 |
| 4161945 | Selective interference filter Filtering means for biophysical recording apparatus for removing interference from a signal source which includes a band rejection or notch filter and means for inserting the filter into the signal circuit when the signals have a certain characteristic an... | 07/24/1979 |
| 4156423 | Coronary atherosclerosis diagnostic method Electronic apparatus is disclosed which is usable to determine the fluency of a person's speech. This apparatus may monitor a dialogue directly, may be connected to a telephone to monitor a dialogue, or may be connected to be responsive to a recording of ... | 05/29/1979 |
| 4141351 | ECG electrode impedance checking system as for emergency medical service A circuit for checking a plurality of impedances having a common connection point as for use in an emergency medical ratio, where the impedance of each ECG electrode contact is automatically and sequentially checked during the initial calibration transmis... | 02/27/1979 |
| 4108166 | Cardiac frequency measuring instrument The specification describes a cardiac frequency measuring instrument which has a frequency measuring device to be carried on the arm of a user. A cable connects the measuring instrument with measuring electrodes carried on the body and with an optical dis... | 08/22/1978 |
| 4106494 | Heart defibrillating and monitoring system In a defibrillator/monitor having first electrodes for applying the defibrillating signal and second electrodes for monitoring physiological conditions and switch means for connecting the active leads to the defibrillator monitor through an isolation ampl... | 08/15/1978 |
| 4101961 | Contour detector and data acquisition system for the left ventricular outline A real-time contour detector and data acquisition system for an angiographic apparatus having a video scanner for converting an X-ray image of a structure characterized by a change in brightness level compared with its surrounding into video format and di... | 07/18/1978 |
| 4079730 | Apparatus for measuring externally of the human body magnetic susceptibility changes An apparatus for measuring externally of the human body magnetic susceptibility changes within the body particularly the human heart and interpreting these changes in order to quantify the flow of blood.... | 03/21/1978 |
| 3991365 | Instantaneous frequency measurement system This invention relates to a system for measuring in real time, by auto-correlation, the period and frequency of a periodic biomedical source signal with random components such as an ultrasound doppler fetal heart beat signal. Before and during delivery of... | 11/09/1976 |
| 3986495 | Optically excited diode current limiter An optically excited diode current limiter, when placed in series with a lead having an electrode attached to a patient such as an EKG or EEG lead, conducts physiological signals picked up by the electrode and protects the patient from electrical shock by... | 10/19/1976 |
| 3986498 | Remote ECG monitoring system 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 modu... | 10/19/1976 |
| 3971364 | Catheter tip force transducer for cardiovascular research A force transducer for measuring dynamic force activity within the heart of a subject essentially consists of a U-shaped beam of low elastic compliance material. Two tines extend from the beam's legs and a long coil spring is attached to the beam. A strai... | 07/27/1976 |
| 3971363 | Myocardium wall thickness transducer and measuring method A myocardium wall thickness measuring transducer comprises a circular beam of high compliance and an elongated spike which extends in the plane in which the beam is disposed. The spike is connected at one point to the beam while a working end of the spike... | 07/27/1976 |
| 3951140 | Ultrasonic therapy apparatus and method An ultrasonic apparatus is used for diagnosis and therapy of patients being treated for post-myocardial infarction. The instrument administers treatment prescribed by the physician in response to signs and symptoms continuously being monitored by the diag... | 04/20/1976 |
