RU2020913C1 - Automatic pneumatic massage apparatus - Google Patents

Abstract

FIELD: medical engineering; pneumatic massage. SUBSTANCE: this apparatus is distinguished from prior art in that its control unit incorporates additional pneumatic pulse duration control unit employed for varying pneumatic pulses depending on particular holding capacity of separate groups of inflatable sections. EFFECT: uniform compression of extremities irrespective of volume of separate sections and patient's specific traits. 1 dwg

Description

 The invention relates to medical instrumentation, specifically to automatic massage devices.

 Known are automatic pneumatic massagers containing a multi-section cuff and a program control unit including a pulse generator that determines the duration of the supplied pulses, and a reference unit of a pulse sequence, for example, a "single", "double" and "rising" wave.

 Their disadvantage is the same duration of pneumatic pulses, which does not take into account the volume of a particular section. As a result, in sections of large volume either the specified pressure is not accumulated, or sections of small volume are under pressure for an unreasonably long time, which can lead to ischemic compression of certain parts of the patient’s body.

 The proposed automatic pneumatic massager contains a source of compressed air with a pressure regulator, a multi-section cuff with inflatable chambers and an electronic program control unit including a pulse generator with a counter, the inputs of which are connected to the node for setting the pulse duration, and the outputs are connected to the input of the matrix storage device, with the other inputs of which are connected to the unit for setting the number of cameras to be switched on and the unit for setting the pulse sequence. The outputs of the matrix storage device are connected to the control inputs of the electro-pneumatic valves connected by other inputs to a source of compressed air and connected by their outputs to the corresponding inputs of the chambers of the multi-section cuff. The massager is characterized in that its program control unit further comprises a unit for changing the pulse duration depending on the volume of individual cuff cameras associated with the input of the matrix storage device.

 The invention improves the efficiency of the application of the pneumatic massage procedure due to a programmable increase or decrease in the duration of pressure supply for any group of chambers, taking into account individual differences in the diagnosis or physiological characteristics of the patient.

 The drawing shows a diagram of the proposed device.

 The device contains an electronic program control unit 1, which includes a pulse generator with a counter 2, a node for setting the pulse duration 3, a matrix storage device 4, a node for setting the number of cameras to be switched on 5, a node for setting the pulse sequence (pneumatic compression mode) 6, a node for changing the pulse duration in depending on the volume of individual chambers of the cuff 7, the unit of electro-pneumatic valves 8. In addition, the device includes a source of compressed air with a pressure regulator 9 and a cuff 10, which in turn contains inflatable chambers 11-16. A compressed air source with a pressure regulator 9 may be located inside the program control unit, or may be external.

 The device operates as follows. Having put the cuff 10 on the patient and connecting its chambers 11-16 to the corresponding outputs of the electro-pneumatic valve assembly 8 in block 1, the operator (as prescribed by the doctor) sets the pulse duration using the nodes 3, 5, 6, the number of cameras to be switched on, for example 4 to the knee or 6 - for the whole leg, and a sequence of pulses (pneumocompression mode), for example, an “increasing wave” of 6 sections, when the pressure appears in chambers 11, 12, etc. at predetermined time intervals, for example, after 20 s, etc. After the appearance of pressure in the last section 16 and holding the time, the pressure in all sections is removed and there should be a pause.

 After a set of programs, the operator turns on the massager. In this case, the pulses from the generator with the counter 2 in accordance with the assignment of nodes 3,5,6 are received at the inputs of the matrix storage device 4. As such a device, permanent or reprogrammable storage devices (ROM or ROM) can be used. The outputs of the nodes 2,5,6,7 are connected to the address inputs of the storage device. The outputs of this storage device in the form of a parallel code through amplifiers (not shown) are supplied to the control inputs of electro-pneumatic valves, which, in accordance with the received command, connect the first chamber 11 of the sleeve 10 to the compressed air source 9. After a predetermined time interval, the generator generates a new pulse and pressure appears in chamber 12, etc. to the last camera. Then there is a pause and the cycle starts again. This is the case when the cuff chambers have approximately the same volume, for example, when a cuff in the form of a sleeve with six inflatable chambers of the same volume is used.

 The work of the massager in the case of using a cuff made in the form of a boot in which part of the chambers (to the knee) have the same, but half as much as the two upper chambers (located above the knee), is as follows. The operator turns on the unit 7. In this case, at the beginning (when pressure appears in the chambers 11, 12, 13, 14), the massager works in the same way as in the previous case. After applying pressure in the chamber 15 and holding the time (in this case, 20 s), the generator also generates a new pulse, but thanks to the program recorded in the matrix memory 4, the previous state is preserved until the next pulse appears, and the filling and holding time in the chamber 15 is doubled . The same thing happens with camera 16. After a pause, the cycle repeats.

 Thus, without changing the pneumocompression mode (“growing” wave) and without double increasing the pulse duration in the lower sections of the cuff, which can lead to ischemic compression of the distal extremities, it is possible to achieve the effect of a uniform action of the massager on the entire limb, regardless of the increased volume of the upper sections of the cuff .

Claims (1)

 AUTOMATIC PNEUMOMASSAGER containing a source of compressed air with a pressure regulator, a multi-section cuff with inflatable chambers and an electronic control unit including a pulse generator with a counter, the inputs of which are connected to the unit for setting the pulse duration, and the outputs are connected to the inputs of the matrix storage device the other inputs of which are connected to a node for setting the number of cameras to be switched on and a node for setting a sequence of pulses, outputs of a matrix storage device and connected to the control inputs of electro-pneumatic valves connected by other inputs to a source of compressed air and connected by their outputs to the corresponding inputs of the inflatable chambers of a multi-section cuff, characterized in that the program control unit further comprises a unit for changing the pulse duration depending on the volume of individual cuff chambers associated with the input matrix storage device.

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