EA006514B1 - Turnaround table for conducting modified orthostatic test - Google Patents

Abstract

The invention relates to medicine, in particular to cardiology and can be used for diagnosis disfunction of autonomous nervous system in patients with pathology of sinus node and syncopal states caused by parasympathotonia. The invention task is to develop a device for safety taking functional test changing the patient's body position enabling to conduct dynamic studies of cardiac function indices under continuos direction change of the turnover table. The inventive task is solved by using a turnover table for conducting modified orthostatic test comprises a frame, a lying surface with a support for legs, an electric motor, a V-belt transmission, a worm reduction gearbox, gears, toothed sectors marked in degrees between 0-60 degree for selecting inclination of the lying surface, wherein the angular velocity of the lying surface turn is 6 degrees/sec, the turnover table further comprises a shaft, bearing supports, adjustable rests, a spring-loaded support and a control board, besides the turnover table is provided with an electrical circuit comprising contactless switches, intermediate relays and time relays, proximity sensors, the lying surface of the table is provided with a retaining and fixing belt.

Description

The invention relates to the field of medicine, namely to cardiology, and can be used to diagnose autonomic dysfunction dysfunction in patients with sinus pathology and syncopal states caused by parasympathicotonia.

The need to develop such a device arose due to the lack of devices that allow you to perform functional tests with a continuously changing position of the patient’s body and verify the clinical symptoms with cardiac performance during this test.

The closest in technical essence to the present invention is a device for imparting a vertical position to a patient during transesophageal electrical stimulation of the heart. [I]. The device comprises a housing, a plank bed with a footrest, an electric motor and a hydraulic drive.

The disadvantage of this device is the lack of indicators marked in degrees, which does not allow to accurately determine the angle of inclination of the lounger, as well as the uneven speed of its rise and the absence of a patient fixing belt.

The objective of the invention is to develop a device for the safe conduct of a functional test with a change in the position of the patient’s body, making it possible to conduct a dynamic study of cardiac activity in conditions of continuous change in the direction of movement of the turntable lounger.

The problem is solved as follows. The rotary table for carrying out a modified orthostatic test includes a body, a lounger with a footrest, an electric motor, a V-belt transmission, a worm gear, gears, toothed sectors marked in degrees from 0 to 60 ° to select the angle of the lounger, and the angular velocity of the lounger equal to 6 degrees / s, as well as the shaft, bearing supports, adjustable supports, spring-loaded stop and control panel, in addition, the turntable is equipped with an electric circuit containing proximity switches, intermediate relays and time relays, limit switches, rotary table sun bed equipped with a fixing belt.

The materiality of the differences of the proposed invention from the prototype consists in equipping the turntable for carrying out a modified orthostatic test with a V-belt drive, worm gear, gears, jagged sectors labeled in degrees from 0 to 60 ° to select the angle of inclination of the lounger, and the angular velocity of the lounger is 6 degrees / s, as well as the shaft, bearing supports, adjustable supports, spring-loaded stop and control panel, which allows you to accurately determine the angle of inclination of the sunbed and both It maintains a uniform speed of its rise, and equipping the turntable with an electric circuit containing contactless switches, intermediate relays and time relays, limit switches, allows a modified orthostatic test with progressive alternating changes in the position of the patient's head end in a vertical plane from 0 to 60 °. In addition, the installation of limit switches, blocking the stopping of the lounger in extreme positions, ensures trouble-free operation of the turntable in case of accidental failures of proximity switches. The presence of a fixing belt lounger ensures the safety of the study.

FIG. 1 shows a general view of the turntable; in fig. 2 - right side view; in fig. 3 shows a circuit diagram of a turntable.

The turntable for carrying out a modified orthostatic test consists of a body 1, to which a bed 2 is attached with an emphasis for legs and an electric motor 3, connected by means of a V-belt transfer 4 to a worm gear 5, on the output shaft of which there are gears on two opposite sides associated with the toothed sectors 7 and through the shaft 8 rests on the bearing supports 9. The housing 1 is mounted on the floor on adjustable supports 10. To the lounger 2, spring-loaded supports 11 and a fixing belt 12 are attached. The table is equipped with a console reign 13.

The electric circuit of the rotary table contains the electric motor M1, contactless switches 801, 802. intermediate relay K1, K2 and time relay KT1, KT2, starters KM1, KM2, switches traveling 8P3, 804.

The device works as follows.

Case 1 is a rigid metal structure and serves to locate and securely fasten on it all the main parts and assemblies of the turntable. The base of the body rests on four adjustable supports 10, serving for the horizontal setting and the stable position of the turntable.

The Start button on the control panel 13 turns on the electric motor 3, from which rotation through the V-belt transfer 4 is transmitted to the input shaft of the worm gearbox 5. Gears 6 are located on the output shaft of the worm gearbox on two opposite sides, which engage with the toothed sectors 7, and Thus, they transmit torque. The gear sectors 7 are rigidly connected with the plank 2, which through the shaft 8 rests on the bearing supports 9, as a result of which it is easily and smoothly rotated in the bearing supports to the required angle. V-belt drive 4, worm gear 5 and a gear pair (gear 6 - toothed sector 7) serve to provide the required speed of rotation of the sun bed 2 equal to 6 deg / s. Spring-loaded stop 11 is designed for amor

- 1 006514 quenching and damping the inertia force of the lounger 2 when it is turned down. The fixing strap 12 serves to fasten the patient on a sun bed. In the initial (initial) position, the lounger occupies a horizontal position, which is ensured by the assembly scheme. When the drive is turned on, it turns the head end upward at an angle of 60 °, and then makes a reverse movement to the original horizontal level (0 °).

The circuit is powered from a 3-phase AC network of 380 V, 50 Hz. The control circuits are powered by alternating voltage 110 V and constant 24 V, received inside the circuit.

The scheme can work in one of two modes: manual or automatic.

Manual mode is activated by setting the 8A "А-Р" toggle switch in the "Р" position (manual). In this mode, the control of the rotary table bed is carried out using buttons 8 3? and 8 4E. Movement will occur as long as the corresponding button is held until it reaches the end position.

The automatic mode is activated by setting the 8A “А-Р” toggle switch in position “A” (automatic). You must first install the lounger in manual mode in one of the extreme positions.

When you install the lounger in the lowest position triggered proximity switch 8Ц1. intermediate relay K1 and time relay KT1. After the end of time, the contacts KT1.1 will close and the contacts K2.2 and 8Ц3 energize the winding of the KM1.4 starter, which is self-blocked by the contacts KM 1.3, and the contact group KM 1.1 starts the motor M1. The movement of the head end of the turntable lounger is carried up.

Upon reaching the extreme top position of the lounger (angle of 60 °), the contactless switch 802 is activated, the intermediate relay K2, which by the contacts K2.2 will break the power supply of the KM1 starter. The movement will stop.

After turning off the power to the KM1 starter, its KM 1.2 contacts close and switch on the KT2 time relay.

After the end of time, the contacts KT2.1 are closed and the contacts K 1.2 and 804 energize the winding of the KM2.4 starter, which is self-blocked by the contacts KM2.3, and the contact group KM2.1 turns on the motor M1. The downward movement of the head end of the turntable lounger begins.

Upon reaching the lowest position of the lounger (angle 0 °), the contactless switch 801 is activated, and then the cycles described above will be repeated.

To stop the operation of the engine and the movement of the lounger in this mode, turn off the power of the “key brand” 81 or switch to manual mode by setting the toggle switch 8A1 to the “P” position. To stop the lounger in an intermediate position is the button 82 "stop".

The inventive device is easy to manufacture, easy to handle, non-invasive and can be used in hospitals with cardiological and neurological departments.

A source of information.

1. Kirkutis, A.A., Rimsha, E.D., Nyavärauskas, Yu.V. The method of application of transesophageal electrical stimulation of the heart. Kaunas, 1990. p. 27-29.

Claims (1)

CLAIM A rotary table for carrying out a modified orthostatic test, comprising a housing, a plank bed with an emphasis for legs and an electric motor, characterized in that the table is equipped with a V-belt drive, a worm gear, gears, gear sectors, a shaft, bearing bearings, adjustable bearings, a spring-loaded emphasis and a control panel, while the gear sectors are marked in degrees from 0 to 60 ° to select the angle of inclination of the lounger, and the angular speed of rotation of the lounger is 6 deg / s, and the lounger is equipped with a fixing belt, at the same time, the table is equipped with an electrical circuit containing proximity switches, intermediate relays and time relays, travel switches.