The device for research efforts grip

 

The invention relates to medical equipment and can find a use for functional diagnostics of the human condition and to monitor the course of the rehabilitation of patients. The device includes a handgrip dynamometer right hand, left hand dynamometer, the power amplification and conversion of the signals, the processing unit and data visualization. The power amplification and conversion of the signals contains amplifiers DC, ADC, interface and power supply. The device improves the accuracy of estimation of the functional state of the neuromuscular system, reduce the time of rehabilitation of patients with various disorders of the brush, to work in biofeedback, conduct rehabilitation procedures in the form of specialized computer games. 4 Il.

The invention relates to medical equipment and allows high accuracy to obtain the results of research efforts grip the left and right hands. This device will find application in medicine for the functional diagnosis of the human condition and to monitor the course of illness and rehabilitation of patients.

Known dynamometer "DIMA" (ed. St. 2023422 And 61 5/ 22) containing d is rugina, both ends clamped in the housing, an integral load cell, representing connected in series strain gages. The strain gages installed on the surface of each of the springs on opposite sides of their axes of symmetry and are designed to lock in the change of the sign of the asymmetry of power brushes.

This device has a number of significant konstruktivnych and functional deficiencies that do not allow to use it effectively in General medical practice. Thus, in particular, the device is fixed only to the asymmetry of the forces of compression brushes without evaluation of the results of the compression force of each hand; there is no possibility of registration of the whole process in the dynamics, which complicates the diagnosis of certain diseases, for example, it is impossible to assess the degree of dynamic endurance of the patient.

Also known torque tester (ed. St. 1507331 And 61 In 5/22) containing the sensor effort, output terminal connected to the first inputs of the first and second Comparators, two digital to analogue Converter, two pulse meter, three trigger, two pulse generator, the pulse shaper, the three elements, a shift register, a decoder, a software switch, a display unit, time relay and electronic with isoamsa to assess the functional state of the motor analyzer in different kind of activities, training and experimental practice.

A significant disadvantage of the device on the bus. St. 1507331 is that it does not allow exploration of a number of indicators related to the asymmetry of the efforts of the compression brushes right and left hands of the patient, without which it is impossible to determine functional status and psychomotor skills of the person. In addition, acting on tightly to a given program, the device has a narrow environment of application in research activities.

The present invention solves the problem of research efforts grip with both right and left hand of the patient simultaneously with fixation results in digital form and in the form of graphs of the process that allows high accuracy to assess the functional status of the test and diagnose the state of the neuromuscular system by expanding the area of performance testing. In addition, the objective of the invention is to obtain research results in real time, giving you the opportunity to work in biofeedback and conduct rehabilitation procedures in the form of specialized computer training games with biofeedback and thus ikaetsya as follows. In the device for research efforts grip containing a handgrip dynamometer, the power amplification and conversion of the signals, the processing unit and data visualization according to the present invention, the device comes with a second wrist dynamometer, with each dynamometer is made in the form of the housing is rigidly fastened it load sensor, consisting of an elastic element with glued on it, strain gauges, Palmar grip and finger grip. The power amplification and conversion of the signals is made in the form of amplifiers DC inputs one and two are connected to respective outputs of the handgrip dynamometers and outputs - inputs one and two analog-to-digital Converter (ADC), the output of which is connected to the first input interface, which is its bi-directional data bus connected to the processing unit and data visualization. The second input interface is connected to the fourth output of the power supply, the third output of which is connected to the third input of the ADC, the second output to the second amplifier input of the load cell of the right hand, and the first output to the second amplifier input signals of the load cells left hand.

The technical result of the present invention Saakov rehabilitation of patients with various disorders of the brush; - expanding and improving clinical effectiveness of rehabilitation techniques through the use of possible research efforts grip with both right and left hand of the patient both in digital form and in the form of graphs of the process; - the calculation according to the research results of a number of indicators related to the asymmetry of compression efforts; in addition, obtaining results in real time gives you the opportunity to work in the mode of biofeedback that allows rehabilitation procedures in the form of specialized computer training games with biofeedback.

The essence of the present invention explained in the description of the patented devices for research efforts grip and drawings, in which: Fig.1 is a block diagram of the device; Fig.2 - structural diagram of the dynamometer brush; Fig.3 is a block diagram of the transmitter; Fig.4 is a enlarged block-diagram of the algorithm operation.

The device for research efforts grip contains (Fig.1) dynamometer wrist of the right hand 1, dynamometer wrist of the left hand 2, the power amplification and conversion of the signals 3, the block data processing and visualization 4.

The power amplification and conversion of ciglitazone signals 4 includes a transmitter 10, the monitor 11 and the printer 12.

The handgrip dynamometer 1 and 2 (Fig.2) represents the body 13 is rigidly fixed therein load sensor, consisting of an elastic element 14 with pasted on it by the strain gauges 15, Volar arm 16 and the finger grip 17. The dynamometer has a site semioriental elastic element in the form of two hinges, one of which consists of a spherical element 18 mounted in the tapered hole of the bracket 19 and a conical socket in the body of the elastic element 14, and the other consists of a spherical element 20 installed in the tapered bore of the housing 13 and the tapered socket of the handle 17. The regulator of the distance between the arms 16 and 17 are made in the form of a coil pair consisting of a screw 21 mounted in the bracket 19, and a threaded sleeve 22, which is a continuation of the handle 16.

When capturing subjects of the arms 16 and 17 prior to the deformation of the elastic element 14 in the process of compression housing 13 with fixed therein by the elastic element 14 due to the presence of site semioriental samoustranyaetsya so that the resultant force of the fingers involved in the capture, coincides with the calibration direction of the elastic element 14. This allows you to measure the true size of the deposits and convert the signal 3 is designed for amplification and regulation of analog signals dynamometers right wrist and left hand and convert it into a digital code with the subsequent transfer of information through a standard interface in the transmitter 10 and contains amplifiers DC 5 and 6, 12-bit analog-to-digital Converter (ADC) 7, the interface 8 and the power supply unit 9.

The first inputs of the amplifiers 5 and 6 DC are the first and the second input unit of the amplification and conversion of the signal 3 and are connected to the outputs of the respective handgrip dynamometers 1 and 2. Amps DC 5 and 6 are designed for the amplification and regulation of electric parameters of signals of the handgrip dynamometers 1 and 2 and performed a differential circuit (see Shyla C. L. Linear integrated circuits in electronic equipment. M., Soviet radio, 1979, S. 162, Fig. 4-10A).

ADC 7 is designed to convert the analog signal of the operational amplifiers in digital code and executed on the chip, the MACH 186 well-known scheme (see MAXIM 1990 New Releases Data Book, S. 1-129, Fig.1). The first and second analog input 7 is connected to the outputs of operational amplifiers 5 and 6, and the output of the ADC 7 is connected with the first input interface 8, which is its bi-directional data bus connected to the computer 10 unit data processing and visualization 4.

The interface 8 is designed to generate standard data transfer Protocol in the unit of processing and visualization 4 and can be performed by well-known scheme (see M. Huk "PC Interfaces, directory, Bespechivaet stabilized voltage, necessary for the operation of the device, and is made in the form of voltage regulator on the chip (see A. Alekseenko, precision analog ICS. M., Soviet radio, 1980, S. 154, table 6.5, figure 3).

The first output of the power supply 9 is connected to the second amplifier input signals of the load cells of the left hand, the second output to the second amplifier input of the load cell of the right hand, the third output is connected to the third input of the ADC, and the fourth to the second input of the interface.

The processing unit and data visualization 4 provides: receiving data from the conversion unit signals of the strain sensors 3 and processing them according to a given program that allows you to display the received information on the screen of the monitor 11, to calculate the indicators associated with the asymmetry of compression efforts, and get results in the form of a printout on a printing device 12. The processing unit and data visualization 4 contains the transmitter 10, a bidirectional data bus associated with the interface 8, the monitor 11 and the printer 12. The monitor 11 and the printer 12 connected with the computer 10 multi-bit bidirectional bus.

The transmitter 10 provides data processing and calculation of indicators related to asymmet the EPA, consisting of a serial of purchased units, for example, the CPU type-Intel P-II 333 MHz Cache/ MB Asustec P2B / RAM SDRAM 64 MB PC-100 / video S3 savage 3D 8 MB Aer / FDD -1,44 MB 3.5' /CD-ROM 32xMatsushita CR586 / HDD slagate 8,6 MB / case midi tower ATX / keyboard PTS Turbo-PS/2 (see Fig.3). The transmitter 10 consists of a body 23 (marks midi-tower ATX), which is embedded in the power supply unit 24 (model AL 230W), and the keyboard 33 (type PTS Turbo-PS/2). Fortified inside the housing 23 motherboard 25 (brand Asustec P2B) contains the processor 26 (type Intel Pentium-11 333 MHz) memory 27 (marks SDRAM 64 MB), hard drive 28 (type Seagate 8,6 GB), as well as controllers, I / o: controller RS-232 29 (type i8250), the keyboard controller 30, the card 31 (marks S3 savage 3D 8 MB) and the printer controller 32 (Centronix type). The operation of the transmitter 10 is performed by a special program developed by the applicant for this device. Enlarged block-diagram of the algorithm of operation of the device shown in Fig.4.

The monitor 11 is to render the indicators associated with the asymmetry of compression efforts, and performed, for example, in the form of a monitor 17" ViewSonic 17 PS "16".

Printing device 12 is intended to produce results on paper and can be made in the form of an inkjet printer HP DeskJet 685.

The device for research efforts grip works as follows.

methods for determining a torque of the indicators according to the program of study (see Fig.4), and the compressing force of the brush is converted dynamometers brush 1 and 2 into an electrical signal, which is supplied to the first and second inputs of the power amplification and signal conversion 3, getting on the first inputs of the amplifiers DC 5 and 6, where it is amplified to the levels required for the ADC 7, and is supplied to its first and second inputs are converted into serial digital code, which is supplied to the first input interface 8 generating unit signals corresponding standard for transmission in the transmitter 10. The power supply unit 9 converts the mains voltage of 220 V stabilized voltage required for operation of the device. With the first, second, third and fourth inputs of the power supply stabilized voltage is supplied to the second amplifier input signals of the load cells left 1 and right 2 hands, ADC 7 (input 3) and the interface 8 (input 2). Output interface 8 digital code signal received over the data bus to the data bus of the computer 10, where the processing of data according to a given program (see Fig.4) examination and calculation of indicators related to the asymmetry of the compression force of that on the corresponding data bus is transmitted to the monitor 11, allowing visually Conti history of the disease.

The developed device allows the determination of the functional state of the person by various methods, for example:
1. Determination of the functional state of the person.

Is synchronous dynamometry hands two handgrip dynamometers, i.e. measured maximum compression force of the brush left and right hands, and then determines a larger value of power and the absolute value of the difference between the compression force of the brushes. Match these values with the physiological norm is determined by the functional status of the patient.

2. The definition of static endurance.

The subject is encouraged to reproduce and keep the muscle force at a given level, which is expressed as a percentage of the maximum developed force of compression. The survey is conducted under visual control, that is, on the screen of the monitor 11 subject you to combine and to keep the beam, showing the real applied force of the compression beam that displays the specified level. When fatigue and releasing the handle of the dynamometer is fixed playback time given force, which is judged on endurance test.

The survey may be conducted as part of the Noi endurance test.

3. Definition of fidelity dosed effort.

The subject is offered for a certain period of time to reproduce and keep the muscle force of the compression at a given level, expressed as a percentage of the maximum developed compression force of. On the screen of the monitor 11 displays a graph of the reproduced efforts scan time, and the specified level and the boundary values of allowable error playing this compression efforts. Upon completion of the survey is calculated precision reproducible retention efforts compression at a given level, expressed as a percentage of the number of measurements, accurately reproduced efforts compression ratio of the total number of conducted measurement:

where- the number of measurements that fall within the specified range;
N is the total number of measurements;
n - number of measurements, starting with the first, fall within the specified range.

This survey allows high accuracy to determine the dynamic endurance test.

4. The definition of psychomotor skills.

On the screen of the monitor 11 in accordance with the sawtooth trajectory with a given amplitude (procent is to combine, changing the compression force of the brush, a managed cursor moving.

After training and learning tasks subjects started the survey and at the end is calculated on the tracking accuracy by the formula

where- the number of measurements that fall within the specified range;
N is the total number of measurements.

Similarly, the second method in this also provides simultaneous examination of both brushes, but here the amplitudes and periods of the trajectory of the target can be different between them.

Indicators of this survey allow us to determine the degree of coordination of movement of the brushes of the test.

5. The mode of rehabilitation equipment.

In the mode of rehabilitation exercise equipment, the patient is asked to combine the symbol ("Bunny") changes the compression force of a character moving across the screen of the monitor 11 in a predetermined path, at the end of the operation, rehabilitation simulators are indicators of the patient and evaluation of the implementation of the task (accuracy of combining characters).

The rehabilitation exercise equipment allows in the form of games available to carry out the recovery process when razlichnyie grip, containing the handgrip dynamometer, the power amplification and conversion of the signals, the processing unit and data visualization, characterized in that the device comprises a second handgrip dynamometer and each dynamometer is made in the form of the housing is rigidly fastened it load sensor, consisting of an elastic element with glued on it, strain gauges, Palmar grip and finger grip, site semioriental elastic element in the form of two hinges, one of which consists of a spherical element mounted in the tapered hole of the bracket and the tapered socket in the body of the elastic element, and the other consists of a spherical element, installed in the tapered housing bore and tapered socket bolt handle and knob distance between the handles is made in the form of a coil pair consisting of a screw mounted in the bracket, and a threaded sleeve, which is a continuation of the Palmar grip, while the power amplification and signal conversion is executed in the form of two amps DC, the first inputs of which are respectively the first and second inputs of the block and which are connected with the corresponding output of the dynamometer, and the outputs are connected respectively with the first and his first multi-bit bidirectional data bus connected to the processing unit and data visualization the second input interface is connected to the fourth output of the power supply, the third output of which is connected to the third input of the analog-to-digital Converter, and first and second outputs respectively to the second inputs of the amplifiers DC.

 

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FIELD: medicine.

SUBSTANCE: method involves applying a set of reference values like body mass, arterial blood pressure, pulse rate in rest state and general physical condition values. Exercise stress is sequentially applied for evaluating vertebral column flexibility, response quickness, dynamic leg force, speed-and-force tolerance. Each value is compared to a reference value, the differences of each item between reference and actual values are summed and the total value is interpreted in terms of complex human physical condition.

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SUBSTANCE: in a worker it is necessary to detect maximal arbitrary power of fingers' flexors before work and the value of single static muscular efforts with wrists during work; determine the tiresomeness of factual dynamic muscular loadings against static muscular loadings (X), moreover X = 3.18; 2.38; 1.75 and 1.32 at achieving single static muscular efforts with wrists, correspondingly, up to 20, -40, -60 and -80% against pre-working level of maximal arbitrary power of fingers' flexors; detect the value of skeletal muscular mass (A) in a worker due to obtaining the product of skeletal muscles portion by its body weight, moreover, the portion of skeletal muscles equals to 0.42 for males and 0.36 for females; detect the portions of skeletal muscles of working manual segments B and other parts of body (C), moreover, B for wrists and fingers corresponds to 0.03, forearms, wrists and fingers - 0.05 and hands as a whole - 0.15; estimate total values of acceleration at movements of hands (Nh), legs (Nl), body (Nb) and as a whole against the mentioned body links (N); detect average for both hands duration of static muscular efforts (T) fulfilled with wrists; detect the value of X and T product (X·T), the sum of Nh number and X·T number (Nh+X·T), the sum of Nb number and Nl number (Nb+Nl) and the sum of N number and X·T number (N+X·T); detect the value of the product of the numbers B and (Nh+X·T)[B·(Nh+X·T)], and, also, C and (Nb+Nl) [C·(Nb+Nl)] and find the number D that corresponds to the product of A number by the sum of the numbers [B·(Nh+X·T)] and [C·(Nb+Nl)], {A·[B·(Nh+X·T)+C·(Nb+Nl)]}, the value of human working skeletal muscular mass should be estimated as the quotient after dividing the number D by the number N+X·T. The innovation enables to increase the accuracy of detecting the value of human working skeletal muscular mass.

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3 tbl

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3 ex, 5 tbl

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