Abstract:
Apparatus for producing panoramic x-ray image projections of the dental arch on X-ray film. The apparatus includes a fixed body (1). The opposite ends of a movable supporting arm (11) are fitted with an X-ray source (12) and a film holder (13) that may be positioned on opposite sides of the dental arch. A first drive (20-23) produces a rotating motion of supporting arm (11) with respect to the arch. A second drive (2, 4) sets the center of rotating motion in linear movement in dependence on the angular position of supporting arm (11). The apparatus further includes a selector (3, 6, 10) for selecting the direction of linear motion (translatory motion) as desired. The selector includes a rotary plate (3), journalled (9) to the body (1) and to which is journalled (8) a linear plate (2) facilitating the linear motion; a motor (10), which is mounted on the rotary plate (3) and which, by means of its associated pinion and a tooth rim ( 6) provided on body (1), translates the rotary plate (3) to a desired angular position; and a sensor (19) for the determination of a desired angular position.
Abstract:
The invention relates to a device intended for monitoring the carbon dioxide output, oxygen consumption and respiration quotient of a patient connected to a respirator. The device comprises O.sub.2 (15) and CO.sub.2 (14) analyzers, a mixing chamber (6), a constant flow fan (8), a gas collector hose (2) and magnetic valves (10-13). The carbon dioxide output and oxygen consumption are directly calculated from the carbon dioxide content of gas mixed with constant air flow from said mixing chamber, from the carbon dioxide and oxygen contents of the gas in said mixing chamber, and from the oxygen content of the gas delivered into a patient by said respirator.
Abstract:
The present apparatus relates to a bioelectric patient monitor, comprising an EKG-amplifier (1) and an EEG-amplifier (2) as well as a patient connecting cable (6), provided with at least five wires with their electrodes (7). The patient connecting cable (6) is connected to amplifiers (1 and 2) by way of a distributor switch (4). By selecting with distributor switch (4), it is possible to monitor either a 5-wire electrocardiogram or optionally a 3-wire electrocardiogram and electroencephalogram.
Abstract:
The invention relates to a gas flow constriction module for the distribution and control of the flow in a respiratory gas monitoring device. The constriction means is provided by a thin, long, plastic constriction tube (3) which is wound on a coil body (2), including couplings (5) in which said constriction tube (3) is cast. Also the part of constriction tube on the coil body can be cast in an adhesive. The arrangement serves to eliminate the problems that are otherwise involved in the use of a long, thin and slippery plastic tubing.
Abstract:
The invention relates to a coil arrangement intended for an NMR testing apparatus for collecting NMR information about a target to be examined, said arrangement comprising first coil means (2) for exciting the nuclei of a target area and for receiving a signal emitted by the nuclei of a target area. The arrangement further includes second coil means (6) for gaining the amplitude of a signal emitted by a limited section of a target and connected to said first coil means, said gain being in proportion to the amplitude of a signal connecting from another section of a target. This is a way of improving the ratio of a signal connecting to said first coil means (2) from said limited section of a target to the electric noise created in the signal collection unit and in a target. The invention can be preferably applied to NMR imaging units which, in addition to mapping the entire body, can be used for the examination of smaller subdomains, such as the eye, ear, limbs etc.
Abstract:
The invention relates to a method for monitoring a condition of a patient under anesthesia or sedation, whereupon one, two, three or more signals are acquired, and the signal(s) represent(s) cardiovascular and/or combined electrical biopotential on skull activity of the patient. From said signal or signals are derived or calculated at least two parameter values related to a quantity like waveform amplitude, waveform periodicity, waveform morphology, waveform variability, energy, power, signal complexity and frequency content. A predetermined mathematical index for probability of patient comfort is used, in which function said parameters are variables, and successively changing probability index values of said mathematical index is calculated.
Abstract:
A non-dispersive infrared measuring arrangement for a multigas analyzer is described having a radiation source (10), a measuring chamber (20), a beam splitter (3), at least a first and a second detector unit (21, 22) both with at least two detectors (1a, 1b; 2a, 2b); and optical filters in radiation beam portions ending in said detectors. The detector units receive the reflected beam portions (RR) and the transmitted beam portion (RT). Both the first and second detector units (21, 22) have: at least one measuring detectors (1a, 1b) provided with an optical measurement filter (5a, 5b); and at least one reference detectors (2a, 2b) provided with an optical reference filter (6a, 6b). Alternatively, the first detector unit (21) has at least two measuring detectors (1a, 1b) each provided with an optical measurement filter (5a, 5b), and the second detector unit (22) has at least two reference detectors (2a, 2b) each provided with an optical reference filter (6a, 6b). The first detector in said first detector unit and said second detector in said second detector unit are positioned to constitute a first independent single path analyzer channel (11), and said second detector in said first detector unit and said first detector in said second detector unit are positioned to constitute a second independent single path analyzer channel (12).
Abstract translation:描述了一种用于多光谱分析仪的非分散红外测量装置,其具有辐射源(10),测量室(20),分束器(3),至少第一和第二检测器单元(21,22) 至少两个检测器(1a,1b; 2a,2b); 以及终止于所述检测器的辐射束部分中的滤光器。 检测器单元接收反射光束部分(R SUB R)和透射光束部分(R SUB T)。 第一和第二检测器单元(21,22)都具有:设置有光学测量滤波器(5a,5b)的至少一个测量检测器(1a,1b); 以及设置有光学参考滤波器(6a,6b)的至少一个参考检测器(2a,2b)。 或者,第一检测器单元(21)具有至少两个每个设置有光学测量滤波器(5a,5b)的测量检测器(1a,1b),并且第二检测器单元(22)具有至少两个参考 每个检测器(2a,2b)均设有光学参考滤光器(6a,6b)。 所述第一检测器单元中的第一检测器和所述第二检测器单元中的所述第二检测器被定位成构成第一独立单路径分析器通道(11),并且所述第一检测器单元中的所述第二检测器和所述第二检测器单元中的所述第一检测器 定位成构成第二独立单路径分析器通道(12)。
Abstract:
Apparatus and method for providing breathing gases to a subject employs an exchanger taking up a quantity of a given component, such as CO2, from expiratory breathing gases passing through the exchanger and thereafter releasing the given component in inspiratory breathing gases subsequently passing through the exchanger. The exchanger may be selectively inserted in a flow path for the breathing gases for this purpose. Or, the breathing gases may be selectively passed through and bypassed around the exchanger. The apparatus and method may be used for non-invasive determination of the functional cardiac output of a patient using the differential form of the Fick equation.
Abstract:
The invention relates to a method for performing X-ray imaging in intraoral application. The method comprises irradiation of an object with a substantially low amount of X-radiation, and a substantially low amount of X-radiation passed through the object is received. The method comprises compiling a sample of image data from the received, substantially low amount of X-radiation. The sample of image data information is communicated to an X-ray source (100), and according to the sample of image data information the object is irradiated with X-radiation, from which X-radiation the part that has passed through the object is received, and the received X-radiation, which is consistent with the sample of image data information, is used for compiling image information.