RU2252740C2 - Artificial respiration apparatus - Google Patents

Abstract

FIELD: medicine; artificial respiration apparatuses.

SUBSTANCE: apparatus has support, actuating mechanism and drive. Support is made in form of frame provided with rigid wheels, four bosses provided hole and placed in pairs in opposite and symmetrically to longitudinal axis extendable bed onto solid rollers; bed is provided with head support and lock. Actuating mechanism is mounted onto top part of frame and has four guides having smooth part inserted into hole of bosses, four elastic elements put onto smooth parts of guides, breast cuff placed among guides, arm with ears which has bushings to be housed onto threaded part of guides, working tool placed above breast cuff. Working tool is made of disc provided with axis which has ends to be embedded into rollers of ears of the arm. Apparatus also has aid for influencing breast cuff which aid is fixed onto disc for movement relatively the axis. Breast cuff has elastic sheet made in form of rectangle provided with bushings at the angles, solid plank fastened in the middle of the sheet, two cords which have first ends to fasten to opposite side faces. Drive has electric motor, redactor provided with speed gear-box, coupling and chain gear with bridle. Elastic elements are made in form of coil cylindrical or conical springs. Aid for influencing breast cuff has Π-shaped groove in the middle and slot at side surfaces. Slot has length determined by ratio of Λ=2D, where Λ is length of slot and D is diameter of disc. Width of slot allows moving axes and screws inside it.

EFFECT: simplified kinematical design of apparatus.

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Description

The invention relates to medicine, in particular to artificial respiration apparatus.

Known artificial respiration apparatus, consisting of a cylinder in communication with the reducer, and through it with a chamber, in which two nozzles are enclosed, directed to narrow towards one another, one of which is connected to the front part, and a normally open valve is inserted into the expanded part of the other nozzle, free the end of which is connected with a membrane device, the feedback channel of which communicates with the nozzle chamber (AS USSR No. 3255012, class A 61 H 31/02, 1972).

The disadvantage of this artificial respiration apparatus is the great complexity of manufacturing due to the complex design. In addition, the use of an oxygen-air mixture for pumping into the patient’s lungs is a drawback, which limits its use in non-stationary conditions.

A known artificial respiration apparatus containing a fixed support rigidly connected to the installation site, an actuator in the form of a variator with a drive, on the caliper of which an electric motor and gearbox with a gear box are mounted, on the output shaft of which a crank is fixed, having a finger with a stone at the end, which placed in the groove of the wings, the axis of which is relative to the shaft of the gearbox with eccentricity, on the other end of which (the wings) in the T-shaped groove is placed another finger with a stone having a large and small stupa and, on the last of which there is a connecting rod pivotally connected to the fur cover, and the free end of the said finger is pivotally connected to the end of the two-shouldered lever, the axis of which, coaxial to the link, is fixed in the tide of the sleeve, freely rotating in the support, rigidly connected with the mounting platform, in of which a roller is mounted on the sliding key with the possibility of movement, one end of which is pivotally connected to the other lever of the two-shouldered lever, and an annular groove is made at the opposite end of this roller, which includes ltsy other lever mounted on a stationary axle, the ends embedded in the other lug of said rotary sleeve, the other end of which is pivotally connected to the nut placed on a screw mounted in said second tide of said rotary sleeve (AS USSR No. 231721 class A 61 H 31/00, 1974).

The disadvantage of the prototype is the complex design of the kinematic scheme of the actuator.

The objective of the invention is to provide an artificial respiration apparatus with a simplified kinetic scheme.

This goal is achieved by the fact that in the artificial respiration apparatus, which includes a support, an actuator and a drive, the support is made in the form of a frame with rigid wheels, four tides arranged in pairs opposite and symmetrical with respect to the longitudinal axis with an opening, a retractable bed on solid rollers with a head restraint and a stopper and the actuator is mounted on the upper part of the frame and is made of four guides inserted into a tidal hole in a smooth section, four elastic elements worn on smooth a section of guides, a chest cuff placed between the guides, an arm with eyes, placed by the bushings on the threaded section of the guides, a working body located above the chest cuff, made of a disk with an axis, ends sealed in the bearings of the eyes of the bracket, means for acting on the chest cuff, mounted on the disk with the ability to move relative to the mentioned axis, while the chest cuff consists of an elastic sheet made in the shape of a rectangle, with bushings at the corners, tver of the throat mounted on the middle of the sheet, two cords attached at one end to the opposite sides, the drive consists of an electric motor, a gearbox with a gearbox, a clutch, a chain transmission with a tension device, and the elastic elements are made in the form of coiled coil or conical springs, and In the middle of the indenter, a U-shaped groove is made, and an elongated slot having a length defined by the expression

L = 2 · D,

where L is the length of the gap;

D is the diameter of the disk,

and the width of the slots is arranged to move the axis and screws in them.

The proposed artificial respiration apparatus is illustrated by drawings

where in Fig.1 is an artificial respiration apparatus, side view;

figure 2 is the same, a view from the front end;

figure 3 shows the working body, front view;

figure 4 is the same, a section along aa in figure 3;

figure 5 shows the bracket, a top view;

figure 6 shows the axis with the disk;

Fig.7 is the same, view according to B in Fig.6;

on Fig shows a frame: a - top view, b - view from the front end;

figure 9 shows the indenter, side view;

figure 10 is the same, a section along BB in figure 9;

figure 11 shows the chest cuff, top view.

The artificial respiration apparatus includes a support made in the form of a frame 1 with hard wheels. On the outside of the frame 1 on the side surfaces there are four oppositely and symmetrically arranged in pairs opposite the longitudinal axis of the tide 2 with a hole. On the upper part of the frame 1 there is a rigid bed on solid rollers with a headrest and a stopper. An actuator is mounted on the upper part of the frame 1. It consists of four guides 4 inserted by a smooth section into the tidal hole, four elastic elements, for example, coiled cylindrical or conical springs, put on a smooth section of each guide 4, a chest cuff 6 placed between the guides 4 consisting of an elastic sheet 7 made in the shape of a rectangle , for example, of medium hard rubber, with bushings 8 at the corners, of a solid strip 9 made of a solid material, for example stainless steel, attached to the middle of the sheet 7, two cords 10, fastened at one end to opposite sides, an arm 11 with eyes, sleeves 12, placed by sleeves 12 on a threaded portion of the guides 4, a working body located above the chest cuff 6, made from an axis 14, with ends sealed in bearings of the eyes of the bracket 11, with a disk 15 with two diametrically located holes, means 16 for acting on the chest cuff, mounted on the disk 15 with the possibility of movement relative to the axis 14, with a U-shaped groove 17, made in the middle and on the side surfaces ях along one slotted oblong slit "a" having a length defined by the expression L = 2 · D, where L is the length of the slit, D is the diameter of the disk 15. The drive of the working body consists of an electric motor 18, a gearbox 19 with a gear box, a coupling 20, which interconnects the electric motor and the gearbox, mounted on the bracket 11, the chain 21, covering the sprocket 22, mounted on the output shaft of the gearbox 19, the sprocket 23, mounted on the end of the axis 14, the tensioner 24, connected to the bracket 11, the roller in contact with the chain 21 two screws 25 connecting the medium The property 16 for acting on the cuff 6 with the disk 15. The nuts 26 fix the position of the guides 4 in the holes of the tides 2 and the bushings 12 of the bracket 11 on these guides. The scale 27, graduated in millimeters, is attached to one of the guides 4. The width of the slots "a" allows for the movement of the axis 14 and screws 25 in them.

The artificial respiration apparatus operates as follows.

Bed 3 with the patient "g" is brought into frame 1 so that the chest is located under the strap 9 of the sheet 7 of the chest cuff 6. Set the required eccentricity of the tool 16 to act on the chest cuff 6 relative to the axis 14. To do this, loosen the screws 25 and move the tool 16 in the required direction by the required amount of eccentricity relative to axis 14. Tightening the nuts of the screws 25, the tool 16 is pressed tightly against the disk 15. The eccentricity is determined experimentally depending on the elasticity of the chest of the patient and his potential active path (inhalation - exhalation). Attach the chest cuff 6 to the patient “g” by covering the body and then connecting the ends of the cord 10. The position of the working body relative to the patient’s chest “g”, if necessary, can be established by translational movement of the bracket 11. To do this, loosen the tightening of the upper (lower) nuts 26 and move the bracket 11 in the desired direction (up or down) by the desired amount. In this case, the sleeves 12 move with sliding along the threaded section of the guides 4. After that, the position of the bracket 11 is fixed by tightening the nuts 26. By turning on the electric circuit, rotate the armature of the electric motor 18, coupling 20, gearbox 19, sprocket 22, chain 21, sprocket 23 and through axis 14 and the disk 15 means 16. When turning the tool 16 acts on the bar 9 of the sheet 7 of the cuff 6, which falls and presses on the patient’s chest "g". In this case, thanks to the telescopic connection, the bushings 8 slide along a smooth section of the guides 4 without transverse vibrations, compress the elastic elements 5. As a result, the patient’s chest "g" is deformed (compressed), which means that the patient "g" works on compression and lungs. Exhaled exhaust air from the body. With a further rotation, the means 16 comes off the bar 9 (from the dead center), the elastic elements 5 are unclenched and the chest cuff 6 is returned to its original position, i.e. the chest cuff moves up. The thorax released from the load is straightened. In this case, expansion of the lungs occurs, i.e. there is a breath of fresh air. This happens before the natural respiratory process is restored. Tidal volume is determined by the amount of compression of the chest. By changing the distance "e" by moving the means 16 relative to axis 14, it is possible to adjust the tidal volume from 0 to the required limit. In this case, the respiratory rate will not change, since the double-stroke time of the chest cuff 6 (compression - expansion of the patient's lungs) is determined by the turn time of the disk 15 of the axis 14, i.e. means 16. Adjustment of the tidal volume is carried out by moving along the screws 25 of the oblong slots "a" of the means 16 relative to the axis 14.

The respiratory rate is determined by the number of double strokes of the chest cuff 6 per minute, which in turn is determined by the rotational speed of the disk 15 axis 14 per minute. Adjustment of the rotational speed (and hence the respiratory rate) is carried out by the gearbox of the gearbox 19 or by replacing one of the sprockets 23 or 22 with a larger diameter or a smaller one. On a scale of 27 determine the depth of inspiration and exhalation.

The implementation of the support frame on hard wheels, as well as a dense bed on solid rollers with the possibility of extension, improves the artificial respiration of the patient and his input to the site of breathing recovery, and the stop 28 reliably fixes the bed on the frame.

The implementation of the chest cuff of medium hardness material provides reliable fixation of the patient on the bed, and a solid bar improves the patient's well-being. The implementation of the working body in the form of a means for acting on the chest cuff and the axis with the disk simplifies the design, and therefore reduces the cost of the apparatus.

The implementation of the U-shaped groove reduces the mass of the agent for acting on the chest cuff, and the lateral slots having a length of L = 2 · D provide for the regulation of the patient’s depth of breathing over a wide range.

This device can be used to restore the patient's breathing in stationary and non-stationary conditions. It has a simple design and can be made in small workshops. Reduces the complexity of maintenance and repair.

Claims (1)

An artificial respiration apparatus including a support, an actuator and a drive, characterized in that the support is made in the form of a frame with rigid wheels, four tides arranged in pairs opposite and symmetrical to the longitudinal axis with an opening, a retractable bed on solid rollers with a head restraint and a stopper, and the executive the mechanism is mounted on the upper part of the frame and includes four guides inserted in a smooth section into the tidal hole, four elastic elements worn on a smooth section of the guides, an ore cuff placed between the guides, an arm with eyes, placed by the bushings on the threaded section of the guides, a working body located above the chest cuff, made of a disk with an axis embedded in the bearings of the eyes of the bracket with ends, means for acting on the chest cuff mounted on the disk with the possibility of movement relative to the mentioned axis, while the chest cuff consists of an elastic sheet made in the shape of a rectangle, with bushings at the corners, a solid strap attached in the middle of the sheet, two cords attached at one end to opposite sides, the drive consists of an electric motor, a gearbox with a gearbox, a clutch, a chain transmission with a tension device, and the elastic elements are made in the form of twisted coil or conical springs, and in the middle of the means to act on the chest cuff, a U-shaped groove is made and a slit is cut on the lateral surfaces, having a length defined by the expression L = 2 D where L is the length of the gap; D is the diameter of the disk, and the width of the slots allows for the movement of the axis and screws in them.

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