Abstract:
Un método y aparato para determinar la condicion de un sujeto de prueba en base al color utilizando un instrumento de medicion de color, para detectar el cambio de un factor de color indicativo de una condicion tal como una enfermedad, daño, envejecimiento, etc.. Puede detectarse una condicion médica tal como la hiperbilirubinemia, que afecta el color de la piel. Uno valora los factores de color tal como Hunter b y L en el color de la piel de los sujetos. Para rangos predeterminados de un factor de color, en particular L, los cambios en el otro factor de color, por ejemplo Hunter b, arriba de los niveles predeterminados, son indicativos de la condicion médica. En muchos casos, una sola medicion de los factores de color, puede utilizarse como una advertencia de la probabilidad de la condicion médica o contaminada, si el rango ordinario de los factores de color se conoce para individuos saludables, con coloracion de la piel similar a aquellas del sujeto de prueba. Aun si no existe medicion de línea basal y el color del sujeto de prueba es tal, que una sola lectura de uno o dos factores de color no advierten de la posible presencia de la condicion médica o contaminacion, las lecturas secuenciales pueden indicar la presencia o ausencia de la condicion en base a los cambios en el factor de color medido, o carecer de cambios. Las técnicas de medicion de color se aplican a un amplio rango de sujetos de prueba biologica (por ejemplo cabello, dientes, tejido, excreciones, alimentos, suelo, animales, plantas).
Abstract:
El umbral de percepcion de corriente alterna constante o umbral de percepcion de dolor de corriente para propositos de determinar la normalidad o anormalidad o la terapia correspondiente relacionada o terapia de fármaco o monitoreo de regeneracion nerviosa o integridad funcional se determinan y registran cuantitativamente, comprendiendo las etapas de: colocar específicamente electrodos sobre el paciente de acuerdo con una prueba predeterminada, que activa una fuente de energía, utilizar un estimulador digital operado por micro controlador integral, que monitorea las respuestas y calcula el valor de umbral y lo registra después de la aplicacion de una corriente constante que tiene relacion con la frecuencia, la forma de onda, la intensidad, la duracion de la presentacion, y el tamaño del electrodo, calcular y registrar los datos que pueden ser determinantes o no determinantes conforme se producen mediante la unidad operada por micro controlador integrado.
Abstract:
A method and apparatus for the treatment of bruxism through biofeedback is disclosed. In one embodiment, the apparatus consists of electronics (M1) mounted in a light-weight headband (HB1) which may be worn comfortably by a user during sleep or while awake. Electrodes (E) within the headband pick up surface EMG voltage signals indicative of bruxism, and biofeedback is provided to the user through an earphone (SK).
Abstract:
The invention provides methods and apparatus for determining cross-sectional dimensions of body lumens, such as the diameter of a blood vessel. According to one exemplary method, the diameter of a blood vessel is measured by first inflating a balloon catheter (10) within the lumen until the balloon (20) diameter matches the lumen diameter. The balloon (20) includes at least one measurement element (26) which indicates the expanded balloon cross-sectional area, circumference or diameter.
Abstract:
A process of calibrating an individual in preparation for the non-invasive measurement of a biological compound across the skin of that individual using non-ionizing radiation is provided. The process includes determining the contribution of one or more skin parameters to the absorption and transmittance data and correcting the subsequent non-invasive measurement of the biological compound for the contribution of the parameter(s).
Abstract:
Disclosed are systems and methods for detecting an onset of true labor in a pregnant mammal. In accordance with a method of this invention the following steps are executed: (a) detected electrical signals from a succession of muscular contractions associated with labor; (b) determining a spectral content of the electrical signals for each contraction; (c) determining a discriminant ( delta ) from the determined spectral content for each contraction so as to provide a set of discriminants, individual ones of the set of discriminants being associated with an individual one of the contractions; and (d) indicating a beginning of true labor when a slope of at least two discriminants of the set of discriminants exceeds a first threshold value and when a magnitude of a last determined discriminant exceeds a second threshold value. The onset of true labor can also be indicated when a value of a critical determinant exceeds a threshold value, the value of the critical determinant being obtained from a combination of the slope of at least two discriminants of the set of discriminants and a magnitude of a last determined discriminant.
Abstract:
A method and system (10) for transforming the image (16) of a long bone into a system coordinate space such as robotics system coordinate space, comprises identifying in the image data set directional coordinates representing bone axis and at least one positional coordinate on the bone surface. Corresponding coordinates in the actual bone immobilized in the robotics or other system space are then determined by contacting a probe (32), such as a probe at the end of a manipulatable arm (28) on a robot (26), to corresponding locations in the actual bone. The coordinates within the image data set are then registered with the actual coordinates within the immobilized bone to produce a transfer function that can be used to transform the image data set to the coordinate system space.
Abstract:
There is presented a urethral measuring device (1) for determining the length of a human urethra, the measuring device comprising a member having an expandable portion (6) at a first end, and adapted to receive fluid from an external source at a second end (6). The member includes graduations (8) arranged such that the graduations are located a pre-specified distance from the expandable portion. In certain embodiments, the graduations also are located at least "x" distance from the meatus of the urethra when the device is inserted and in an operative position. The measuring device further includes a collar (10) slidably disposed and movable on the member and is used as a pointer against the graduations to measure the length of the urethra. There is further presented a method for determining the length of a urethra, utilizing the aforesaid device.
Abstract:
A video pedobarograph system (20) for providing a real time, qualitative display of dynamic relative pressure measurements includes a plurality of force sensors, a substantially rigid support structure (28) and video pedobarograph electronics (44). The force sensors generate dynamic relative pressure signals and are positioned within a force sensor matrix structure (26). The substantially rigid support structure (28) includes a substantially planar surface (30) to which the sensor matrix structure (26) is fixedly secured. The video pedobarograph electronics (44) include a video sync stripper (48) and control logic (52). The video sync stripper (48) strips a video sync signal from a composite video signal received by the video pedobarograph electronics (44). The control logic (52) maps the dynamic relative pressure signals to the composite video in response to the video sync signal to generate a mapped composite video signal providing a qualitative display of the dynamic relative pressure signals within a predetermined portion of an overall video image generated from the mapped composite video signal.
Abstract:
A burn evaluation apparatus (30) and related method, that allows a surgeon to make a quick evaluation of the extend and depth of a skin burn injury by employing induced ultraviolet or blue light fluorescence spectroscopy and visible and infrared reflectance spectroscopy. The apparatus (30) monitors the condition of the structural and metabolic constituents in the injured skin (2). The apparatus (30) includes a plurality of light sources (32-42), a sensor (44), a microprocessor (46), and several optical fiber bundles (48-54). The light sources emit excitation light at predetermined wavelengths, and when each is activated, the sensor (44) measures the amount return light received within several wavelength bands of interest. A side fiber bundel (54) spaced about a centimeter from a main fiber bundle assists in detecting tissue water below the burn area. By optically evaluating the skin at the burn site, the apparatus (30) prevents the unnecessary removal of viable skin that will heal spontaneously within a few weeks, thereby reducing the amount of skin that must be surgically grafted.