摘要:
A device and a method for simultaneous recording, in real time, parameters characterising the mechanical tension, elasticity, dynamical stiffness, creepability and mechanical stress of soft biological tissue are provided. By means of the myometer, a constant external pre-pressure is created, independently of the device's position, between the tissue and the testing end of the device. Next, the tissue is subjected to a short-term external dynamic influence. A mechanical change in the shape of the tissue and its mechanical response are registered as a graph of the tissue's oscillations. For calculating the parameters, a time span on the graph is used which involves an oscillation period from the beginning to the end of the effect on the tissue plus its subsequent first 1.5 self-oscillation period. This enables recording and data-processing to be carried out simultaneously as well as statistically significant estimates to be made in real time.
摘要:
A dental analyzer (10) for analyzing dental implants (28) includes a dental probe (20) having a probe tip (26) for contacting a patient's dental implant (28). An accelerometer (56) is coupled to the probe tip (26). A hammer (42) fired by an actuator (44) against the accelerometer (56) impacts the probe tip (26) against the dental implant (28) which vibrates the dental implant (28). The accelerometer (56) measures the acceleration time history of the vibrating dental implant (28). A processor converts the measured acceleration time history of the dental implant (28) into a frequency spectrum from which a diagnosis can then be made regarding the condition of the dental implant (28).
摘要:
A method for measuring the acoustic damping capacity of a specimen (114), such as a layered honeycomb structure, comprises tapping the specimen (114) with a tapping rod (102). The tapping action imparts mechanical energy to the specimen (114). The method further comprises measuring, for a time interval, energy reflected from the specimen (114) as a result of the tapping. The method further comprises creating a time-energy profile (120) based on the energy reflected from the specimen during the time interval. The method further comprises evaluating the time-energy profile (120) to determine the acoustic damping capacity of the specimen (114).
摘要:
The invention lies in the domain of medical technology and relates to a diagnosis and monitoring device for the rapid diagnosis and monitoring of vital parameters of the human or animal body, in particular of the heart and/or lungs, said device being compact, without cables and/or tubes and easy to use for the user. Devices such as a bell (1) comprising a membrane (2) and/or measuring electrodes (4, 5) for receiving and forwarding acoustic and/or electric signals of the body are arranged in a housing with a cross-section that is approximately the size of the palm of a hand and a height of approximately half a hand-width, on the side of a housing that is to be placed on the body. Said devices are connected to a device in the housing, which analyses, filters and stores the signals of the receiving device and to additional devices for visually reproducing the evaluated signals in digital or analogue form using display fields (14, 15, 16, 17) and/or for acoustically reproducing said signals using a loudspeaker (9) located in the housing. The diagnosis and monitoring device also comprises interfaces (10, 11) for connecting external devices and equipment (e.g. computer, earphones, printer). The principal characteristics of the invention are illustrated in figures 1 and 3.
摘要:
A compact diagnostic neurological tool comprising a two-point discriminator; a brush; and a sharp-dull instrument; wherein the two-point discriminator, the brush, and the sharp-dull instrument are all housed within a case; wherein the two-point discriminator, the brush, and the sharp-dull instrument are all retractable; wherein the two-point discriminator comprises two tines, and wherein the distance between the tines can be increased by extending the two-point discriminator and decreased by retracting the two-point discriminator. The case is preferably rectangular in shape and roughly five inches long, one and one-quarter inches wide, and one-half inch thick.
摘要:
The integrity (density) of discrete pieces of hard tissue (bones) in a patient may be determined by either one of two methods. In a first method, an impulse of energy is introduced into the bone, such as by striking the patient's bone, and the induced vibration is sensed and analyzed in order to compute the damping factor thereof, the damping factor being directly related to the density thereof. With this method, a transducer (26) is coupled to the bone (24) and its output is amplified by an amplifier (28) before input to a computer (30) which determines the damping factor. In a second method, a continuous energy input is provided to the bone, such as by utilizing a frequency generator (36) coupled to a power amplifier (38) whose output drives a transducer (40) such as a speaker for inducing a continuous vibration in the bone. This continuous vibration is measured with a transducer (26), an amplifier (28), and a damping factor calculated with a computer (30) as in the first method.