UA97317C2 - Device for assessment of pressure distribution in sleeve - Google Patents

Abstract

A device for assessment of pressure distribution in sleeve relates to medical technology, in particular to prosthetics, and can be used for objective assessment of quality of sleeve manufacture. The device comprises resistive transducers, an analogue signal processing unit connected to the unit for conversion of signals to numeric code, which is connected to computer through the leader. 16 individual resistive thin-film sensors are used as sensors, 8 of those are arranged on the contour of sleeve binding ring in stump points sensitive to load; the rest 8 thin-film sensors are arranged 3- lower than binding ring on the contour of regulation zone. Measuring part of each sensor is fixed at the inner sleeve surface. Each of individual resistive thin-film sensors is connected to unit for signal processing and conversion. The use of the device due to use of individual thin-film sensors allows to provide patient comfort in the performance of testing, to reduce inconvenience causing compensatory forced movement motions invalidating the test results.

Description

before changing the output analog signals from the matrix, Fig. 2 - an example of the placement scheme of the sensors that enter the signal processing and conversion unit on the inner surface of the signal receiving sleeve, and in the form of digital signals of the prosthesis during measurements. to the computer, where in the digital processing unit Devices for evaluating the pressure distribution in the receiver signals are processed by the applied prole sleeve of the prosthesis contains the computer 1 (see Fig. in the form of information about the pressure distribution 1), processing and conversion unit 2 connected to it in the area where the matrix is located is displayed on the signal transmission, to the input of which with the help of a computer monitor. sixteen units are connected to wires C and connectors 4

This device is considered a prototype. night resistive thin film sensors 5

Its disadvantages consist in the fact that under additional pressure, type A201-25 of the company "Riehigogse" (USA) with a matrix pressure measurement device with a thickness of 0.25 mm. Resistive sensors 5 installed allow you to receive information about the integrated on the inner surface of the receiving sleeve b the magnitude of the pressure in the zones of the stump, on which theses are installed at the points most critical to the effect of pressure (see the matrix of resistive sensors, which does not allow - Fig. 2). Zone 7 of the landing ring: tuber 8, pubic area to carry out discrete measurements in the dry formative points of the most inve joint 9, perineum 10, zone 11. In addition, the matrix system of the tendons of the adductor muscles, zone 12 of the neurovascular allows measurements to cover a limited amount of the bundle, the outer edge of the front wall 13, zone 14 zones , especially in the zone of the landing ring, in which the greater trochanter, gluteal region 15. Points 16- the largest number of critical to nava- 23 are located 3-4 cm lower in the zone 24 of regulation, the pressure of the points of the stump, which reduces t visual evaluation according to the points in zone 7 of the landing ring. pressure distribution between the stump and the receiving sleeve Block 2 of signal processing and conversion (see Fig. prosthesis. 1) is made in the form of analog-to-digital conversion

The technical task of the invention is to increase the rudder 25, connected to the converter 26, of equal objectivity of the evaluation of the pressure of the receiving sleeve to signals for transmitting information to the computer and the quality of the manufacturing of the receiving sleeve. computer 1, where it is processed by the application

This problem is solved by the fact that in the device for the program 27, the results of the pressure distribution of the pressure distribution in the receiving sleeve are displayed on the monitor 28 and printed on the analog signal processing unit, which contains resistive sensors, printer 29, connected to the unit re- The device is used as follows. converting the signals into a digital code, which is fixed through a cable When assessing the quality of prosthetics, 5 sensors are connected to a computer, according to the invention, the pressure is fixed, for example, with the help of a cattle drive, as the sensors are used 16 unit cha, on the inner surface receiving sleeve of 6 resistive thin-film sensors, 9 of which the prosthesis at the points that correspond to the critical points of receiving the load of the patient's stump set along the contour of the landing ring, and the second small sleeve in the load-critical stumps are connected at the end to connectors 4, which with the help of points, respectively, in the zones of the tuber, pubic joint Z are attached to block 2 of processing and crossing, perineum, tendon of the adductor muscles, vortices of signals. After that, the patient wears a pro-neurovascular bundle, on the outer edge of theses. The device is ready for operation. When resting on the anterior wall, in the areas of the greater trochanter and sitzes, the force of pressure from the patient's weight through the stump of the occipital region; the remaining 8 thin-film sensors are transmitted to resistive pressure sensors 5 and installed 3-4 cm below the landing ring, their resistance changes, as a result of which the electrical signals of the regulation zone opposite each of the transverse signals, which through connectors 4, change and wire From the calculated points of the landing ring zone, respectively; the measuring part of each of the sensors is connected to the analog-to-digital converter 25 - the signal processing and conversion block 2. The signals of each of the resistive sensors of the 5th prosthesis are analyzed on the inner surface of the receiving sleeve; each of the single resistive thin-chips are converted into digital and transmitted to left sensors connected to the processing unit and the 26 signal level converter. Data is transmitted by signal conversion. to computer 1, where they are processed by application pro-

The use of single sensors allows the gram 27 and displayed on the monitor 28 in the form of receiving information about the pressure distribution between the pressure graphs of each sensor in the real mass of the patient and the receiving sleeve of the prosthesis in time and printed on the printer 29 at certain points of the inner surface of the receiver look at the pressure distribution graphs. With the help of a fitting sleeve of the prosthesis. The distribution of single alignment sensors receives objective information about the pressure value at any desired point of the mounting ring adapter and at the corresponding points of the full sleeve of the prosthesis at points critical to the load of the stump. When detecting the zones of the subcontour of the regulation zone, located 3-4 cm away from the pressure, which pose a threat to the emerging zone of the landing ring, it allows the detection of damage to the soft tissues of the stump at points critical to the load on the patient's stump and operation of the prosthesis, perform the correction is accepted - at the expense of this, the accuracy of the assessment of the naval sleeve for the redistribution of loads for traction on the stump will be increased. stump of the patient.

The essence of the invention is explained by a drawing, in which the following are shown: Fig. 1 - a functional diagram of the devices for evaluating the pressure distribution in the receiving device for evaluating the pressure distribution in the receiving sleeve of the prosthesis, which is used for opening the sleeve of the prosthesis. obtaining an objective assessment of the pressure distribution between the stump and the receiving sleeve of the prosthesis. This permission

it is possible to detect points critical to the load and compensatory unnatural movements that distort the correction of the receiving sleeve of the prosthesis. evaluation indicators. The possibility of receiving information

Thus, the device for evaluating the distribution of mation about the pressure in any specific critical to the pressure in the receiving sleeve of the prosthesis, due to the increased pressure at the point of the stump, if necessary, the additional use of single thin-film sensors allows to quickly correct the shape of the pressure allows to increase the patient's comfort of the receiving sleeve for redistributing the load during research, reducing the feeling of pain or eliminating it from certain critical inconveniences, due to which the patient may have stump zones, which increases the quality of prosthetics. tower years of drinking iE and O she V

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State Intellectual Property Service of Ukraine, st. Urytskogo, 45, Kyiv, MSP, 03680, Ukraine

SE "Ukrainian Institute of Industrial Property", str. Glazunova, 1, Kyiv - 42, 01601