Abstract:
An easily manipulable device for determining the volume of an area under examination, comprises a probe (1) having an actuator (24) imparting motion to the prostate, a sensor (26) for measuring the displacement of the actuator, and a load cell (28) for measuring the force exerted by the prostate in response to the imparted motion.
Abstract:
The invention relates to a method for measuring the function of joints and associated muscles. The method comprises measuring, on the one hand, the mobility of a person in a desired area and, on the other hand, simultaneously by means of electromyography (EMG) measuring the electrical activity of muscles in the same area, and evaluating the abnormality in the mobility and in the function of the muscles of said area, caused especially by pain, by comparing the measured values with reference values compiled in advance.
Abstract:
In rhinostereometry, which is an optical method for measuring the congestion of the nasal mucosa, it has to be possible to repeatedly and with high accuracy fix the test subject's head in the same position in a coordinate system. This can be achieved by means of a fixing device comprising a plurality of pressure transducers (6-10) which are brought into contact with the test subject's head in such a manner that the head exerts at least a predetermined minimum pressure on all the transducers. Because the fixing device includes means for recording the positions of the pressure transducers in the coordinate system, the test subject's head can be repeatedly fixed in the same position.
Abstract:
An apparatus and a method to monitor the balance performance of a user comprises two separate but similar foot-plates (11 and 12) each slightly larger than the foot of a user. Each foot-plate includes detectors (18, 19) to detect the load imparted to the foot-plate by a user, about two axes (33, 34) generally at right angles with one axis lying more or less along the length of the user's foot and the other axis transverse thereto. The outputs from the foot-plates are fed to a processing unit (10) which drives a display device (13), graphically to show to the user on a real-time basis the detected loads and so to allow a user to modify his balance performance.
Abstract:
The system according to the present invention comprises a means for showing the position of the spine consisting of a blade (1) with vertebral references (2) provided with holes (3) through which are put into evidence, on the external side of the patient's back, the position of the vertebrae by means of adhesives (4) or reflecting dermographic ink, reflecting in such a way that a revealing unit; consisting of blade (5), with electromagnetic, infrared or any other kind of waves' emitter-revealer (6), finds out the position and sends the information to a computer (7) that will show the deviations and the rhachid's elongation to be rehabilited by means of appropriate exercise, on a monitor (8). The appearance of the force lines shows, together with the direction, the correction tendency or will. The transparent and square back plane of the rehabilitation device allows to find out the height of placing for the push and counter-push arms.
Abstract:
A device is disclosed for performing a quantitative analysis of a patient during exercise against isometric, isokinetic, or isoinertial resistance, in order to construct a detailed musculoskeletal model of a human subject. To use the device, the subject grasps a handle (234) which is attached to a length of cable, wound upon a cable spool. Sensing devices detect angle at which the patient is pulling the cable. In the preferred version, force sensors are attached to an upper surface of the platform (126) to detect the manner in which the subject's weight is distributed between the anterior and posterior regions of the subject's feet, as well as between the subject's right and left feet. A computing station (104) is attached to the sensors available in the particular embodiment being utilized, including the cameras (110, 116) if present, and functions to analyze data received therefrom.
Abstract:
An apparatus (10) and method for monitoring pressure between the surface of a body part and a contact surface employ a plurality of pressure sensors (20) disposed in a matrix array between the contact surface and the body part. The sensors (20) produce analog force signals proportional to pressure, and a monitor receives the analog signals. A computer processor receives the output signals from the monitor to create a force profile for the sensor array. This monitoring apparatus (10) and method is used, for example, to fit prothetics, to monitor bed-ridden and wheelchair-bound patients, to reduce pain and sores caused by uneven distribution of pressure and to monitor pressure between a cast (90) and a person. The sensors (20) may be mounted on a single sheet (22) or on strips for positioning along the body, and monitoring is accomplished by multiplexing and digitizing the analog force signals.
Abstract:
Apparatus for testing an implant (3) attached to a bone (4) of a human or animal subject comprises a cantilever beam (1) releasably attached to the implant. The beam carries a transducer (5) for exciting the beam (1) with a variable frequency AC signal, and a transducer (6) for detecting a resonance frequency of the beam. The detected resonance frequency is used to assess the degree of attachment of the implant (3) to the bone (1).
Abstract:
A force transducer for a joint prosthesis is disclosed. The transducer includes A f5RUw,V,central body having a plurality of cavities formed therein from a lower surface. Each cavity defines a flexure member. A plate is located on the side opposite the cavities and connect to each flexure member through support posts. The support posts localize three applied to the plate to each flexure member. Force sensing elements attached to each flexure member provide a signal corresponding to the force applied to the flexure member.
Abstract:
A device for scanning, in particular optically, the topography of a region of the buccal cavity, in particular the surface of teeth or maxillae, comprises a unit (26, 23) which is introduced into the cavity. The unit is provided with deflecting and/or guiding means (7, 21) and control means (39) for the deflecting means for guiding a measurement beam (8) for surface scanning. Each surface point to be scanned in the region of interest in the cavity is swept point by point and row by row by the measurement beam (8). The device comprises a transducer (10) for obtaining data on the distance (17c) between a corresponding fixed reference point on the transducer and an adjacent point on the surface to be scanned in the cavity from a signal derived from the signal of the measurement beam. The device also comprises a measurement transducer (43) for converting the distance data to an electric signal (17c), and a digitizer connected downstream of the measurement transducer for producing digital data values which represent the corresponding datas in association with the input signal for controlling the deflecting means.