Monitoring of cardiopulmonary resuscitation (cpr) and system and method of information presentation

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to system for carrying out CPR. Device of providing feedback in carrying out CPR contains sensor of compression, adapted for placement between rescuer's hands and victim's chest, module of control with feedback, connected with compression sensor, and programmed for registration of output data of compression, their analysis, identification of single compression cycles and comparison of single cycles of compression with multitude of evaluation criterions. Matrix of comparison is output on presentation device, and each element of matrix corresponds to comparison of one of single compression cycles with one of multitude of evaluation criteria. Method of feedback presentation includes stages of carrying out compression of victim's chest through sensor of compression, registration, analysis, identification and comparison of output data from compression sensor with multitude of evaluation in form of comparison matrix elements.

EFFECT: invention makes it possible to increase efficiency of improvement of technical methods in carrying out CPR.

19 cl, 6 dwg

 

The invention generally relates to systems feedback when performing cardio-pulmonary resuscitation (CPR), and more particularly, to systems feedback when performing CPR, which provide feedback for the overall effectiveness of CPR.

Sudden cardiac arrest (SCA) is one of the most popular causes of death in the United States. Most often SCA occurs without warning, affecting people without previous obvious symptoms of heart disease. It is estimated that in the United States alone, more than 1000 people per day are victims of sudden cardiac arrest. SCA occurs when the electrical component of the heart no longer functions properly, causing abnormal sinus rhythm.

The chances of survival in cardiac arrest decreases over time after the attack. For this reason, quick response to stop by perform CPR and/or through defibrillation shock is of particular importance. The document "Chain of Survival" American Association for the Study of Heart Disease enumerates the following steps:

1) quick access to medical care, as, for example, by activating system emergency response (for example, by calling an ambulance);

2) quick CPR initiated by the witness or others providing early assistance to the person h is usually used to help the victim to stay alive as long until you arrive more skilled care;

3) rapid defibrillation;

4) rapid application of Intensive Therapy to Maintain Cardiac function in the Prehospital (ACLS), such as controlled breathing, medicines etc. the Advantages of this approach are discussed more fully in Cummins, et al., "Improving Survival From Sudden Cardiac Arrest: The Chain of Survival Concept", Circulation 83 18332-47 (May 1991).

It is important to correctly perform CPR to increase the chances of the victim to survive. In particular, often chest compression is not performed properly many non-professional rescuers and trained rescuers. Recommendations published by the American Association for the Study of Heart Disease, "2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care, Circulation Vol.112, Edition 24 (December 2005), in recent years emphasize the importance of ensuring an adequate number of compressions of the chest, constriction of the chest for adequate depth, the possibilities for the chest to finish after each compression, minimizing interruptions in chest compressions.

In use of the system of registration and CPR feedback provide feedback during the execution of the CPR both for training and for real salvation. However, it is difficult to monitor implementation during CPR training or school is selected resuscitation and judge how well the user has adapted and/or applied feedback.

Accordingly, in this area would progress the provision of an improved system and method of providing feedback when performing CPR.

In one aspect of the invention, the sensor compression is adapted for placement between the hands of the rescuer and the chest of the victim during CPR. Sensor compression provides an output signal to the control module with feedback, which registers the output signals and splits the data into separate cycles of compression. The output signal is also analyzed to compare individual compression cycles with the evaluation criteria, which may include minimum and maximum values for maximum compression, maximum depth of compression for exemption, the minimum and maximum frequency and the maximum interval of no effect. The analysis results are formatted in a matrix, each element of which corresponds to the results of the analysis of individual compression cycle in accordance with the test criteria.

In another aspect of the invention, each of the elements of the matrix includes a graph representing the characteristic of contractions within at least one of the individual compression cycles over time. Graphics may include selected areas marked in accordance with the sample, moreover, the highlighted areas correspond to the areas of the graphs that do not satisfy one of the evaluation criteria.

In the drawings:

figure 1 is a block diagram of the feedback controller in accordance with the embodiment of the present invention;

figure 2 is a graph illustrating compression performed during a compression cycle when CPR;

figure 3 is an illustration of a display of the output from the feedback controller in accordance with the embodiment of the present invention;

figure 4 is an illustration of an alternative display output from the feedback controller in accordance with the embodiment of the present invention;

figure 5 is an illustration of another alternative display output from the feedback controller in accordance with the embodiment of the present invention;

6 is a block diagram of the automated external defibrillator (AED)that contains the feedback controller in accordance with the embodiment of the present invention.

With reference to figure 1, the system 10 feedback during CPR includes gasket 12 for placement on the chest of the victim. The rescuer presses the gasket 12 when performing chest compression. The strip 12 will win the sensor 14 to track grips, that allows the rescuer to perform chest compression victim through the sensor compression, placed between the chest of the victim and the hands of the rescuer. The sensor 14 may be a pressure sensor, a motion sensor, a load cell or similar device suitable for creating an output signal corresponding to the force and/or movement of the test strip 12 during compressions during CPR.

The output of the sensor 14 are provided in the module 16 of the feedback control. The output of the sensor can be processed by the imaging unit 18 signals, which performs functions such as noise elimination, conversion of the output into a digital signal and other functions of the signal processing known in this field to eliminate artifacts from the converted signal and the training signal for processing.

The output of the shaper 18 signals are provided in the segmentation module 20. The segmentation module 20 records the output of the shaper 18 signals over a period of time during the event CPR. The segmentation module 20 then analyzes the recorded data to separate the registered data corresponding to the individual compression cycles within the event CPR. Usually, CPR includes the number of cycles, each of which includes the implementation of the giving a certain number of compressions and subsequent ventilation of the lungs. Accordingly, the segmentation module 20 can identify the data segments corresponding to the series of contractions of the thorax of each cycle. The segmentation module 20 can identify segments by identifying a series of compressions, limited intervals of no effect, the relevant stage lung ventilation of each cycle in which the compression is not performed.

With reference to figure 2, referring at the same time, in figure 1, a graphical representation of the data recorded by the segmentation module 20 may include various peaks corresponding to the individual grips. Segments 22, identified by the segmentation module 20 include groups of peaks corresponding to the stage of the compression cycle can be separated from each other by intervals of 24 with no impact during running ventilation. The segments 22 can be parsed by module 26 extract, which collects data that describes some or all of the grips within the segment 22. The extracted data may include the depth 28 of the peak compression of some or all of the grips, minimum compression 30 between some or all of the peaks and the location and/or duration of intervals 32 of the lack of impact between the peaks. Interval 32 displays a lack of exposure during the compression cycle, not related to what antiscia lungs. Module 26 extract may also determine the frequency of contractions. The frequency can be calculated for the segment 22 as a whole or be calculated for smaller pootrakul, or smaller pootrakul, centered on each peak within the segment 22.

Data extracted using the module 26 of the extract are then processed by the module 34 evaluation, which compares the extracted data with the criteria 36. Criteria 36 may include, for example, the minimum and maximum values for maximum compression, maximum depth of compression for exemption, the minimum and maximum frequency and the maximum interval of no effect. Criteria 36 may be stored in memory 38 connected to or enclosed in the module 16 of the feedback control. The memory 38 may be a memory read/rewrite, so that the criteria 36 can be changed in accordance with the most often used skills and exercises.

The results of the evaluation performed by the module 34 estimates are processed by the module 40 of the output data to generate output data for display 42, a printer or other output device data. Module 40 output formats and presents the evaluation in human readable form. Evaluation results can also be stored in memory 38 for later review and assessment of the either on the display 42 or other device. For example, the memory 38 may be a removable storage device such as flash card, through which evaluation results can be transferred to other computerized equipment. If necessary, the evaluation results can also be transferred via a wired connection or wirelessly to another device.

With reference to figure 3, the assessment may be formatted as a displayed matrix 44, with the rows (or columns) 46 corresponding to the evaluation criteria and the columns (or rows) 48 corresponding to the individual compression cycles. Individual compression cycles shown in figure 3 Roman numerals I-V at the top of the matrix 44. The elements 50 of the matrix 44 correspond to the assessment of individual compression cycle in accordance with one of the evaluation criteria. For example, the matrix 44 includes elements to reduce compression (Reduction), depth of compression ("Depth"), the frequency or speed compression ("Speed") and no effect ("No impact") during the compression cycle. In some embodiments, the implementation, the module 40, the output gives the matrix 44 in the web application, personal digital organiser (PDA), a projector, a printer, a universal computer, connected to a monitor or other display device information.

In some embodiments, the implementation, the elements 50 of the matrix 44 includes designation PR is cents indicates the percentage of compressions during a single cycle of compression, which meet the relevant assessment criteria. For example, in relation to the depth of the compression elements 50 may indicate the percentage of compressions, which lie between the minimum depth and maximum depth of compression. In reducing the compression elements 50 may indicate the percentage of compression, after which the rescuer allows the chest of the victim to return to a fairly reduced depth between the minimum depth and maximum depth of compression. Such an implementation option is illustrated in figure 3. In some embodiments, the implementation, the elements 50 of the matrix include a number indicating the number of compressions within a single cycle of compression, which meets the evaluation criteria. Additionally, in the absence of exposure during a single cycle of compression elements 50 can be specified by applying one or more colors or words that the compression cycle had or not had periods without compression, as will be described in more detail below.

In some embodiments, the implementation, the elements 50 may also be selected to indicate which of the individual compression cycles were adequate or inadequate in accordance with the evaluation criteria. For example, elements 50A-coded green is output as the compression cycle to satisfy the evaluation criteria. Elements 50b coded red because the corresponding compression cycle did not meet the evaluation criteria. In some embodiments, the implementation, the elements 50 are coded according to the color code, including color for multiple sub-bands within the range of adequate and inadequate values.

With reference to figure 4, in some embodiments, the implementation of the elements 50 include graphs representing the feature of the single cycle of compression over time. To represent the valid range for the relevant assessment criteria, can be applied or height (for rows)or width (if columns) elements. For example, the elements 50C indicate how the maximum depth of compression varies with each compression within the compression cycle. Elements 50d indicate how the minimum depth of compression between compression (reduced depth) within each cycle of compression. The elements 50 ppm indicate how the frequency of contractions varies within each individual compression cycle.

Elements 50C-50 ppm may additionally include the highlighted part indicates the part of the graph which are not available to meet one of the test criteria. For example, the elements 50 include a selected portion indicating ol the measures when the depth of maximum compression or exceeds the specified maximum depth of compression, or falls below a specified minimum depth of compression. Figure 4 illustrates selected typical case C, where the depth of maximum compression ratio exceeds the maximum depth of compression. Elements 50d include selected portions 52d, which reduced the depth between the grips was more than a preset reduced depth. The elements 50 ppm include selected parts e indicating where the frequency of contractions or exceeds the maximum rate or falls below the set minimum frequency. The example illustrated by figure 4, shows the rate of compression, which exceeds the maximum accepted frequency.

Elements 50f contain a strip 52f, if there are any periods of absence compression within each cycle of compression, with the length of the strip, indicating the duration of the absence of compression. In some embodiments, implementation, only the elements 50f contain the band, which indicates the length of the periods of absence of compression within a single cycle of compression, if it contains in itself the absence of compression than the configured threshold duration. In some embodiments, the implementation, the band has printed text, which specifies the duration of the absence of compression. In some the variants of implementation, the band appears only if the period of absence compression ratio is lowered to meet the assessment criteria. In other embodiments, implementation, periods of absence compression is shown, irrespective of the duration and periods of absence compression exceeding the evaluation criteria emit. In other embodiments, additional implementation, only the periods of absence compression ratio greater than the first threshold, and selects only those periods of absence of compression, which have a duration exceeding the second threshold, the corresponding evaluation criteria.

With reference to figure 5, in an alternative embodiment, the graphics include a series of points 54 discrete data, with each data point representing the average or other combination of multiple compressions, such as two or three, within the compression cycle. Point 54 data can be plotted on a zone 56 indicating the ranges of acceptable values, characteristic for each cycle of compression.

6 illustrates the module 16 of the feedback control, the prisoner in the controller 58 automated external defibrillator (AED) 60. In this example, includes AED electrodes 62 for contact with the skin of the victim when performing defibrillation shock. AED 60 further includes a source 64 of the power supply providing power to Prov the Denia defibrillation shock and to supply power to the electronic components of the AED. The controller 58 may be programmed to control the delivery of electrical energy from a source 64 of the power supply to the electrodes 62. The controller 58 also detects the electrical activity of the heart affected across the electrodes 62 and analyzes the electrical activity to determine whether to be shocked. AED 60 further includes a display 66, and the controller is programmed to display on the display 66 commands AED. In such scenarios, the implementation, the module 40 output, as a result, may display the results of the evaluation of CPR, as discussed above, on the same display 66. In other embodiments, implementation, AED 60 may include a printer for printing the results of the evaluation of CPR. Another alternative is to transfer the evaluation matrix to another computerized system to display.

In addition to inclusion in the AED, the module 16, the feedback control may be included in a training device, AED or monitor/defibrillator ALS (Emergency Life support) of the patient.

The invention provides an improved system and method of providing feedback when performing CPR. Module 16 feedback control allows the rescuer or in training to observe the execution in General, and not just immediate feedback. This item is icine module 16 feedback control enables rescuers and training more effectively to improve their techniques, leading to greater survival rate in victims. Additionally, the module 16 of the feedback control allows the rescuer to determine the onset of fatigue when performance decreases beyond the evaluation criteria, enabling the rescuers to know when they replace each other.

The above-described invention can also be used in combination with the provision of immediate feedback to the training objectives. For example, training may perform activities of CPR on a mannequin and provide almost immediate feedback on the depth of compression, reduced depth, frequency and lack of compression on colours or representations, as is well known in this field. Then training who can perform CPR event without immediate feedback, and after classes to get a scorecard in accordance with the systems and methods described above. Thus, training will be able to assess the extent to which recommendations soak and become habitual.

Based on the foregoing, it should be understood that although particular embodiments of the invention described in this application for purposes of illustration, can be created in various modifications without going beyond the nature and scope of legal pritasari the invention. The link to the modules constituting embodiments of the invention, specifies the structure and the steps to perform functions that distinguish the module, but the structures to perform functions that distinguish the module can work in other time periods or may include multiple separate structures, which may or may not be combined. Accordingly, the invention is not limited by anything except the attached claims.

1. The device provide feedback when performing CPR. contains:
sensor compression, adapted for placement between the hands of the rescuer and the chest of the victim, and the sensor compression generates output compression;
module feedback control coupled to the sensor, compression, and module feedback control is programmed to record the output of the compression;
analyze the recorded output data compression and identify individual compression cycles;
compare individual compression cycles with multiple evaluation criteria;
display on the display device a matrix of comparisons, including the elements of the matrix, and each matrix element corresponds to a comparison of one of the individual compression cycles with one of the multiple evaluation criteria.

2. The device according to claim 1, in which one of the rows and columns metricconverter individual compression cycles, and the other of the rows and columns corresponds to a set of evaluation criteria.

3. The device according to claim 1, wherein the evaluation criteria include at least one of: depth compression, reducing compression, frequency and lack of impact.

4. The device according to claim 1, in which the elements of the matrix include selected parts corresponding to the parts of the individual compression cycles that do not meet the evaluation criteria.

5. The device according to claim 1, in which the elements of the matrix include a first selected portion, having the first color and the second selected portion, having a second color and the first selected portion corresponds to a separate cycles of compression which does not satisfy the evaluation criterion, and the second selected portion corresponds to a separate compression cycles that satisfy the criterion.

6. The device according to claim 1, in which each of the elements of the matrix includes a graph representing the characteristic of the compression within a single cycle of compression over time.

7. The device according to claim 6, in which one or more graphs include one or more selected areas marked in accordance with the sample, and the highlighted areas correspond to the areas of the individual compression cycles that do not meet one of the evaluation criteria.

8. The device according to claim 1, wherein the display device includes at least one of: a display screen and printer.

<> 9. The device according to claim 1, additionally containing an automatic external defibrillator with power source and the electrodes for conducting a defibrillation shock to the victim, the control module with feedback connected to the power source and programmed to monitor the compression applied to the sensor compression.

10. Method of providing feedback when performing CPR, comprising the steps are:
perform chest compression victim through the sensor compression, placed between the chest of the victim and the hands of the rescuer;
record the output from the sensor compression;
analyze the registered output data compression, in order to identify the individual cycles of compression;
compare each individual compression cycle with multiple evaluation criteria;
derive the matrix of comparisons, including the elements of the matrix, and each matrix element corresponds to the comparison, at least one of the individual compression cycles with at least one of the multiple evaluation criteria.

11. The method according to claim 10, further comprising measuring the electrocardiogram (ECG) to the victim and the conduct of the defibrillation shock.

12. The method according to claim 10, in which the output matrix comparisons further includes a distribution comparisons in rows and columns, where one of the rows and to onok corresponds to cycles of compression, and the other of the rows and columns corresponds to the evaluation criteria.

13. The method according to claim 10, in which the evaluation criteria include at least one of: the depth of the compression, reducing the compression ratio, compression speed and lack of impact.

14. The method according to claim 10, in which the output matrix comparisons further includes the allocation of plots of matrix elements corresponding to individual compression cycles that do not meet one of the evaluation criteria.

15. The method according to claim 10, in which the output matrix of comparisons includes an additional allocation in accordance with the first color in the first sections of the matrix elements and selection in accordance with the second color of the second sections of the matrix elements, with the first highlighted areas correspond to the cycles of compression that do not meet the test criteria, and the second highlighted areas correspond to the cycles of compression. meet the test criteria.

16. The method according to claim 10, in which the output matrix comparisons further includes displaying graphics features compressions within each compression cycles over time.

17. The method according to item 16, further including the land plot in accordance with the color, and the first parts correspond to the parts of the graphs that do not satisfy one of the evaluation criteria.

18. The method according to claim 10, in which the output matrix comparisons enables output mA is the matrix of comparisons, at least one of: a display screen and printer.

19. The method according to p, in which the display screen is a display contained in the defibrillator with the power source and the electrodes and the power source, the electrodes and the sensor compression connected with the control module feedback programmed to monitor the conduct of compressions to the patient.



 

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FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to apparatuses for emergency medical care. The apparatus comprises a piece of clothing, a control unit arranged thereon used to control at least one physiological function of the patient to state an emergency, and a therapeutic device arranged on the piece of clothing and operatively connected to the control unit for treating the patient. The therapeutic device is a respiratory therapeutic device applied to supply oxygen, an oxygen-containing gas mixture and/or at least one drug endotracheally, and comprises a perforating unit to perforate the patient's trachea below the larynx.

EFFECT: use of the invention provides extending the range of apparatuses for emergency medical care.

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FIELD: electricity.

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FIELD: medicine.

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14 cl, 10 dwg

FIELD: physics.

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7 dwg, 1 tbl

FIELD: medicine.

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FIELD: medical engineering.

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5 cl, 1 dwg

FIELD: medicine.

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7 cl, 9 dwg

The invention relates to a device of a charging capacitor

The invention relates to medical equipment, namely, devices for generating stimulus signals

FIELD: medicine.

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1 ex

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to apparatuses for emergency medical care. The apparatus comprises a piece of clothing, a control unit arranged thereon used to control at least one physiological function of the patient to state an emergency, and a therapeutic device arranged on the piece of clothing and operatively connected to the control unit for treating the patient. The therapeutic device is a respiratory therapeutic device applied to supply oxygen, an oxygen-containing gas mixture and/or at least one drug endotracheally, and comprises a perforating unit to perforate the patient's trachea below the larynx.

EFFECT: use of the invention provides extending the range of apparatuses for emergency medical care.

20 cl, 2 dwg

FIELD: medicine.

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3 ex

FIELD: medicine.

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23 cl, 8 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to pediatrics, physiotherapy. Method includes complex health resort treatment. Patient is given procedures of artificial salt micro-climate. Impact by highly dispersive aerosol of table salt with total quantity of sodium chloride particles 15000 in 1 cm3 is realised. Impact is realised at air temperature 21-24°C, humidity 40-70 vol. %, at speed of air movement 0.1-0.2 m/sec. Duration of procedures is 12-15, daily. Course includes 8-10 procedures. Daily patient does walks on the route of 4 km long Kislovodsk park health path, with angle of elevation 7°.

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2 ex, 4 tbl

FIELD: medicine.

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8 cl, 5 dwg

FIELD: medicine.

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EFFECT: method enables effective myocardium adaptation to ischemia ensured by drug-induced asystole before aortic compression, with escaping stages of global ischemia and preventing aortotomy hemorrhage.

1 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to pulmonology, and can be used if diagnostic bronchoalveolar lavage required in patients suffering moderately severe and severe bronchial asthma. For this purpose, bronchofiberscopy is combined with single introduction and single aspiration of physiologic saline 8-10 ml heated to 37°C. Simultaneously, high-frequency jet pulmonary ventilation (HF JPV) at inspiration-expiration relation 1:2 and respiratory rate 160 per 1 min for 40-90 seconds is used.

EFFECT: technique provides faster and more voluminous fluid flow from alveoli to bronchial tubes due to prevented decrease in blood oxygenation while carrying out the procedure owing to the simultaneous use of HF JPV in a certain mode.

2 tbl

FIELD: medicine.

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EFFECT: method makes it possible to prevent development of bronchopulmonary dysplasia in said category of patients due to introduction of surfactant BL, which contains surfactant-associated proteins by means of nebuliser, making it possible to introduce medication at rate, optimal for alveolar deposition, preserving its molecular integrity.

4 tbl, 4 ex

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, namely to resuscitation and intensive therapy, and can be used in executing cardiopulmonary resuscitation (CPR). That is ensured by chest compressions with using a device comprising a bar with an anteroposterior chest size scale, a force transfer contact element representing a strain-free support plate adjusted on a patient's chest, a sound-and-light indicator generating a sound and light signal of fixed frequency 100 times a minute a case of which comprises the bar to be mounted and fastened thereon, a contact element horizontal position sensor comprising a laser pointer, and a nomograph to determine an optimum excursion depth in length units. The nomograph has points 14 to 24 cm corresponding to the anteroposterior chest size, and dial graduations are provided in the form of steps formed by upper borders of nomograph columns which have height equal to 2.247xi cm where xi is a number of dial graduation specifying the anteroposterior chest size. The laser pointer is fixed on the support plate and directs a light ray in a field of the nomograph columns. Chest compression is executed in a projection of the middle one-third of breast bone by pressing through the strain-free flat surface of the contact element at frequency 100 in a minute at an excursion depth, with first 2-3 pressings made 50-70 % of the specified excursion depth. Compression is accompanied with sound and light signals radiated at pressing frequency, and the contact element is followed visually by projecting with a ray its position in a nomograph column field within upper and lower limits of the corresponding column.

EFFECT: invention allows providing the most effective CPR ensured by creating optimum artificial blood-groove volume in great vessels with simultaneous simplification of technical compression control facilities, and higher correct chest compression data reliability.

2 cl, 12 tbl, 4 dwg

FIELD: medical engineering.

SUBSTANCE: device has belt manufactured from inextensible flexible material having clamps mounted on one side along its length, with rollers enveloped by cords. Closed chambers built from flexible material, filled with liquid and having pressure gages, are attached to its other side in camp projections. Electromotor is mounted in the middle part of the belt on the same side with the clamps. The electromotor has control system. Drum enveloped with cords is rigidly fixed on the electromotor end part. The middle portion of each cord is rigidly connected to cylindrical drum surface. Free ends of the cords are connected to end clamps.

EFFECT: retained ability of unrestrained patient movements.

2 dwg

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