Device transmit electrocardiograms

 

(57) Abstract:

The invention relates to medical equipment, in particular, to a device for telemetric transmission of bioelectric signals. The technical result consists in increasing the accuracy of the device while improving usability. Device transmit electrocardiograms, contains electrodes connected in series, repeaters, switch leads, the input of which is connected to the frequency divider, the switch leads, and to output serially differential amplifier, operational amplifier, a voltage controlled oscillator, a power amplifier connected to the speaker inputs of the control unit switch leads and switch the transmission mode, connected between the switching button leads and the switch lead wires. The control unit switch leads connected between the frequency divider and switch the transfer mode. A frequency divider connected to the output of the generator, voltage controlled. The control unit switch leads consists of series-connected binary counter, the one-shot and key. 1 C.p. f-crystals, 1 Il.

The invention otnosytsy patients.

The number of known devices designed to transfer electrocardiograma by phone and contains the transmitter, the main parts of which are the electrode Assembly, switch, amplifier and modulator, as well as additional devices for the transmission of non lead before the ECG signal (ed. St. USSR N 1286158, MKI A 61 B 5/04), to reduce noise when switching the ECG leads (ed. St. USSR N 1287842, class A 61 B 5/04), to prevent transmission of electrocardiogram with poor contact of the electrodes on the skin (ed. St. USSR N 1827164, MCI: A 61 B 5/04). However, these devices do not provide for the automatic transfer of leads and their complexity due to the introduction of additional devices can not make distortions in the transmission of ECG.

Closest to the proposed device is electrocardiographic "RPC-9", developed by the Association "Diamond" , Saratov (Technical description and operating instructions. AM.530.010, 1992). It consists of series-connected electrode block, block repeaters and switch leads, the second input is connected to the second output of the switch leads, the first output of which is connected to the bus zero potential, the third the full signal amplitude 1 mV, and exit through the serially connected differential amplifier, operational amplifier, a voltage controlled oscillator, a power amplifier connected to the input of the speaker. The disadvantage of the prototype is that, first, the switch leads when transferring ECG is done manually, by pressing the switch leads and, secondly, for the formation of the calibration signal in an amplitude of 1 mV at a certain frequency is a special generator, introducing additional distortions in the transmitted cardioseal. Thus, this device does not provide high accuracy and noise immunity transfer electrocardiograma.

The purpose of the invention is improving the accuracy of the device while improving the convenience of operation.

The invention consists in that the transmission device electrocardiograma containing successively United electrode block, the block repeater and switch leads, the second input is connected to the output of the frequency divider, and the output connected in series through a differential amplifier, operational amplifier, a voltage controlled oscillator, a power amplifier connected to the input of Dinamika transmission, the first input of which is connected to the second output of the switch leads and the output to the third input of the switch leads, the input control unit switch leads connected to the output of the frequency divider and the output to the second input of the switch transmission mode, and the input of the frequency divider is connected to the output of the generator, voltage controlled. In addition, the control unit switch leads performed on serially connected binary counter, the counting input of which is the entrance block, the one-shot, the output of which is connected to the reset input of a binary counter, and the key information input connected to the zero potential bus, a control input with the output of one-shot, and the output is the output of the block.

In the drawing is given of the proposed device.

Legend: 1 - electrodes; 2 - repeaters; 3 - switch leads (ON); 4 - button switch leads; 5 - differential amplifier; 6 - operational amplifier (op-amp); 7 - a voltage controlled oscillator (VCO); 8 - power amplifier (PA); 9 - speaker; 10 - frequency divider; 11 - unit control switch leads (BUPA); 12 - switch transmission mode; 13 - binary counters is About) 11 in the proposed device allows you to extend its functionality - the ability to work in manual and automatic modes. The proposed connection GONG 7 frequency divider allows you to do during the formation of the calibration signal with amplitude of 1 mV and automatic switching leads without additional generator, as in the prototype, which reduces the level of distortion of the transmitted electrocardiogram. The apparent simplicity of the proposed solution, which consists in joining the VCO 7 to the input of the frequency divider is not obvious, because during the transmission of the calibration signal amplitude 1 mV frequency generator 7 remains practically constant (frequency deviation is less than 1.5%) that does not change the frequency of the calibration signal and the time shift leads.

The input signal from the frequency divider 10 is fed to the input of the binary counter 13, which produces a triggering pulse of one-shot 14, forming a short pulse, managing key 15 and translating the binary counter 13 in the initial position. When the control signal key 15 causes its output to a common point scheme. Depending on the position of the mode switch transmission 12 to the input of the switch leads 3 receives the control signal either with the buttons PE the proposed device is presented in accordance with the foregoing. Special execution unit 11 due to his appointment in this device. As the one-shot 14 is used standby multivibrator containing the element OR. Its normal output level is low, the output start pulse is positive, and = 2/3RC , where R and C component values in the waiting multivibrator. (see C. L. awl, Popular digital circuits. - M.: Radio and communication, 1988, S. 219). The pulse duration can be selected within a wide range. For example, from 10 to 10 MS. In the drawing in the binary counter 13 is used designations: C - counting input, R is the reset input, Q - output conventions in the literature. Managed key 15 in this embodiment is an integrated chip series CCI. each key has an output and the input signal, and the enable input signal, the resistance of the enabled channel 80 Ohms, which is equivalent to the contact resistance of the pressed button. (See reference C. L. Shyla Popular digital chips, S. 227). Thus, it is possible to control switching of the leads when the 4 button is pressed, or automatically controlled by the electronic circuit depending on the position of the mode switch of the transmission 12.

1.aricela and switch leads, the second input is connected to the output of the frequency divider, and the output connected in series through a differential amplifier, operational amplifier, a voltage controlled oscillator, a power amplifier connected to the input of the speaker, and button switch leads, the first output of which is connected to the zero potential bus, characterized in that it introduced the control unit switch leads and switch the transmission mode, the first input of which is connected to the second output of the switch leads and the output to the third input of the switch leads, the input control unit switch leads connected to the output of the frequency divider, and the output to the second input of the switch transmission mode, and the input of the frequency divider is connected to the output of the generator, voltage controlled.

2. The device under item 1, characterized in that the control unit switch leads performed on serially connected binary counter, the counting input of which is the entrance block, the one-shot, the output of which is connected to the reset input of a binary counter, and the key information input connected to the zero potential bus, a control input with the output of the

 

Same patents:

The patient table // 2085120
The invention relates to diagnostic medical devices, which are designed as to move the patient in the area of research, and to obtain diagnostic tamogami using a magnetic scanner

FIELD: medical engineering.

SUBSTANCE: device has base bearing upright having members for fixing patient pelvis and members for fixing head and chest. Each fixing member is manufactured as clamp with six degrees of freedom and allowing rotation by 360° about longitudinal axis. The upright has pulley system, rope and ratchet winch for stretching the vertebral column. The base has separating protrusion.

EFFECT: reliable patient body fixation.

1 dwg

FIELD: medicine; X-ray computer tomography.

SUBSTANCE: headrest can be used for imparting necessary position to head of patient laid onto horizontal surface. Headrest has head support provided with rotary-fixing unit which provides lifting and lowering, and lean plate attached to table. Rotary sector provided with radius groove is mounted between head support and lean plate. Rotary-fixing unit of head support is mounted onto turning sector by means of arms. Sector is mounted for movement for angle of 0-45 ° to the left or to the right relatively horizontal axis within radius groove. Scale for measuring angle of turn is drawn onto external side of rotary sector. Lean plate is provided with rod having thread which rod enters radius groove of rotary sector. Nut is put onto rod with thread which nut fixes rotary sector to lean plate.

EFFECT: widened diagnostic abilities of computer tomography tests.

2 dwg

FIELD: medicine; traumatic surgery.

SUBSTANCE: device has U-shaped metal plate, onto which plate two counter-rests and latch are mounted. Latch has case with lever mounted for rotation; lever is provided with area for making contact with fingers.

EFFECT: improved efficiency of diagnostics; reduced traumatism.

3 dwg, 1 att

FIELD: medicine; traumatic surgery; radiology.

SUBSTANCE: device can be used as for radiology and for reposition of fractures. Device has ring with lateral slots correspondingly to degrees of circle, and metal plate-arrow. Ring is made of metal; ring is open. Width of slots equals to at least 0,5 mm.

EFFECT: smaller number of radiological tests; reduced time for diagnosing.

4 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to radiodiagnostics. Patient is placed on computer tomography (CT) table in lying position. From the side of sole foot surface plate is put and loaded in proximal direction with system of weights, which causes displacements in sole joints characteristic of non-fixed planovalgus deformity. CT table together with patient and system of weights modeling load is placed into working part of CT with soles at specified angle of inclination and layer-by-layer scanning in horizontal plane is carried out.

EFFECT: method ensures increase of accuracy of diagnosing non-fixed planovalgus deformity and allows to select optimal method of operative intervention.

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely in orthopedics and traumatology for diagnostics of diseases and injuries of knee joints. X-ray attachment consists of plate, which is rigidly connected with two posts with placed on them two sliders with stops, connected with swivel joint hip support and shin support with fixing elements, mechanism for regulating angle of inclination of shin support with graduated scale and fixer, threaded holder of frame for cassette with X-ray film. Threaded holder of frame for cassette with film is installed in middle part of shin support, and in front of it, fixed is bracket with shin fixing elements. Hip support is made in form of two mutually perpendicular rectangular panels with stiffening ribs, vertical panel of hip support being rigidly connected with four sliders, placed on posts, additional two of which are located in the middle part of posts. Mechanism for regulating angle of shin support inclination is made in form of set bar of round section with graduated scale on its length and fixer, installed on bar with possibility of travel and fixation with cramp screw of fixer. Bar is connected with shin support by swivel joint of bar and shin support, and via its lower end it is connected with the middle of lower part of vertical panel of hip support by means of swivel joint of bar and vertical panel. Feet stops are installed on shin support with possibility of travel and are made in form of pair of mutually perpendicular board with stiffening ribs and three slots on horizontal board in each, in end slots guiding pins are installed, in the middle slot - securing bolt of foot stop.

EFFECT: application of invention allows to increasew accuracy of diagnostics.

6 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine and can be used in traumatology, orthopedics, neurosurgery, vertebrology and radiology for evaluating deficit of spinal canal lumen. From a series of images two images of axial section in uninjured zone and zone with the most expressed deficit of spinal canal lumen are selected. On each of said images additional plotting is carried out, on axis of vertebra symmetry and further, at equal distance from each other. Straight lines, parallel to axis of vertebra symmetry, are drawn, crossing with these lines contour of spinal canal from each side. On each of two selected images determined are lengths of segments of drawn straight lines, limited by spinal canal contour. After that deficit of spinal canal lumen is determined.

EFFECT: method allows to determine deficit of spinal canal lumen and volume of surgical intervention.

2 cl, 3 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: radio-opaque enema technique following incomplete colonoscopy involves the stages: plan radiography of abdominal cavity organs is performed in a prone patient to assess a position features of an air-inflated colon, then in a left lateral position, barium diluted 1:3 or 1:4 is introduced to the patient, while introducing, the patient is repositioned taking into account the detected position features of the colon so that barium travels in a colon lumen under its own weight. After barium comes through a blind intestine or an ascending colon, the patient turns around by a right side. Then standard roentgenograms are performed.

EFFECT: method enables estimating the colon condition following failed colonoscopy, provides information completeness of diagnostics and differential diagnostics of colon diseases, extends possibilities of an X-ray technique without complications and demand of additional implementation resources.

2 cl

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely devices and systems for neurophysiological control, testing and studying in clinical and intraoperative examination. A position controller for repositioning a patient's body part comprises an elongated extension arm, first and second handles, and first and second carriers. The elongated extension arm has a first end and a second end. The first handle is attached to the first end of the elongated arm and comprises an elongated portion, an widened portion extending from the elongated portion, and an extension bar extending from the widened portion. The extension bar is curved downwards to the second end of the elongated arm. The second handle is attached to the second end of the elongated arm and comprises the elongated portion, the widened portion extending from the elongated portion, and the extension bar extending from the widened portion. The extension bar is curved downwards to the first end of the elongated arm. The first carrier has a first end detachably coupled with the elongated arm, a second end, and a supporting base having a central portion and the first and second extension bars extending from the central portion. The first extension bar has a curvature radius of a first length. The second extension bar has a curvature radius of a second length different from the curvature radius of the first length. The second carrier is at the preset distance from the first carrier and comprises the first end detachably coupled with the elongated arm, the second end, and the supporting base having the central portion and the first and second extension bars extending from the central portion. The first extension bar has the curvature radius of the first length. The second extension bar has the curvature radius of the second length different from the curvature radius of the first length. The carriers are substantially perpendicular to the elongated arm.

EFFECT: invention optimises an X-ray area in radiography with fixing patient's shoulders placed so that to avoid X-ray difficulties.

16 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to combined system of obtaining images. Hybrid system of obtaining images includes magnetic resonance scanner and system of obtaining images of the second method of impact, separated from magnetic resonance scanner with some space. In the first version of implementation, said space is less than four metres. In the second version magnetic resonance scanner and system of obtaining images of the second method of impact are located in a room with radio-frequency insulation. Bed for patient is located, at least, partially, in the space between magnetic resonance scanner and system of obtaining images of the second method of impact and includes base, located between magnetic resonance scanner and system of obtaining images of the second method of impact, movable linearly table for supporting patient, installed for selected travel in the area of examination by magnetic resonance scanner and in the area of examination of system of obtaining images of the second method of impact. In the first version of implementation, area of linear table travel constitutes less than five-fold length of table for supporting patient in direction of linear travel. In the second version table is provided with radio-frequency device or port of device, radio-frequency cable being connected to them. In the third version of implementation table for supporting patient moves in the first direction in the area of magnetic resonance scanner examination for obtaining magnetic resonance images, and in the second direction, in the area of system of obtaining images of the second method of impact examination. Method of hybrid system modification lies in placement of system of obtaining images of the second method of impact in a room with radio-frequency insulation, which contains magnetic resonance scanner together with system of obtaining images of the second method of impact, separated from magnetic resonance scanner by some space smaller than seven metres and with areas of examination of respective systems of magnetic resonance scanner and obtaining images of the second method of impact.

EFFECT: invention makes it possible to reduce total size of hybrid system of image obtaining and increase efficiency of scanning.

31 cl, 9 dwg

Up!