Abstract: A method and apparatus for accelerating osseointegration of titanium implants in bone to anchor a prosthetic or dental device thereon in which an alternating electric signal of symmetrical wave form and of substantially constant amplitude having a frequency in the range of from about 40 to 100 KHz and providing a constant current in the range of from about 10 to 100 microamperes is supplied to at least one electrode in contact with the metal implant and another electrode in contact with the skin in proximity to the implant.

Abstract: A process is disclosed wherein whole blood or a blood fraction, such as platelets or leukocytes are stored within a modulated electrical field, such as a capacitive field, to extend the shelf life of the blood or fraction.

Abstract: Audiometer apparatus comprises an electrostatic transducer having insulated electrodes for application to the skin on the head of a patient and driven by an ultrasonic frequency carrier signal generated in a series resonant circuit including the impedance of the body tissues between the electrodes, the carrier frequency being determined by the series resonant circuit. The amplitude of the carrier is modulated at an audio frequency, and operating parameters such as the magnitude of the current fed to the electrodes and the modulation frequency are controlled automatically in response to preselected values preset therein.Current and modulation frequency values are preset stepwise into a manually adjustable preselectors having detents formed by cooperating magnetic elements establishing successive rest positions corresponding to steps to which the preselector may be set.

Abstract: Body stimulator apparatus comprises a portable housing containing a signal generator that supplies a periodically varying treatment signal of ultrasonic frequency and given voltage and current to electrodes applied to a living body to be treated. A retrievable record of the time of treatment is stored in digital form and the voltage and current are sensed and analog representations thereof are fed to a normally disabled analog to digital converter. The converter is enabled by synchronizing pulses from a separate test instrument and the analog representations converted to digital form are latched and loaded into a shift register array with the stored record of the treatment time and shifted out therefrom serially to the test instrument by clock pulses generated by the latter.The test instrument is actuatable to generate the synchronizing and clock pulses required to enable the converter and actuate the shift register.

Abstract: A device for mounting a treatment electrode on the skin of a patient in an area covered by a body cast comprises an access window secured intermediate the ends of a relatively flexible band embedded in the body cast. The access window has a releasably latched cap with a central opening in which is secured a flexible diaphragm for supporting an electrode in contact with the adjacent skin area of the patient. The cap opening is normally tightly closed by a removable cover.

Abstract: Bone fractures previously considered incurable are healed non-invasively by applying to electrodes coupled to the skin of a living body in the vicinity of a bone fracture an alternating voltage having a wave form that is symmetrical with respect to the axis, a frequency in the range 20-100 KHz and a value in the range from about 2 to 10 volts peak to peak.

Abstract: Apparatus for stimulating osteogenesis in a living body comprises a portable, light weight, self-contained, low drain, battery powered stimulating instrument adapted to be carried by a patient during treatment for applying a high frequency alternating current treatment signal to the skin of the patient according to a treatment program and for generating a readable record of a parameter of the treatment signal during the treatment program, and a clinical control instrument in the custody of a person supervising the treatment program and connectable to the stimulation instrument when desired for monitoring the condition of the latter and for reading out data recorded therein during the treatment program.

Abstract: Cell development in articular chondrocytes is enhanced by subjecting them to an alternating current field having a frequency of about 60/khz and a current density in the order of 30-40 .mu.amps/cm.sup.2.

Abstract: Osteoporosis in a living body prevented and/or treated by applying electrodes non-invasively to a body and supplying to the electrodes an AC signal of about 5-15 volts peak-to-peak at a frequency of about 20-100 KHz to cause a treatment current to flow in a body region affected or likely to be affected by osteoporosis.

Abstract: Epiphyseal growth plate stimulation in the bone of a living body is achieved by applying electrodes non-invasively to a body and supplying to said electrodes an AC signal in the range of about 2.5 to 15 volts peak-to-peak at a frequency of about 20-100 KHz.

Abstract: Apparatus for stimulating osteogenesis in a living body comprises a portable, light weight, self-contained, low drain, battery powered stimulating instrument adapted to be carried by a patient during treatment for applying a high frequency alternating current treatment signal to the skin of the patient according to a treatment program and for generating a readable record of a parameter of the treatment signal during the treatment program, and a clinical control instrument in the custody of a person supervising the treatment program and connectable to the stimulation instrument when desired for monitoring the condition of the latter and for reading out data recorded therein during the treatment program.