RU2364384C1 - Invalid cart elevator - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention concerns medical equipment. An invalid cart elevator comprises a wheeled base, a shaft mounted on the base, adjacent to a drive and provided with a pair of levers attached thereto, and a bed comprising separate mobile, e.g. yawing, flat elastic lodgements fixed at least in two positions and mobile arms fixed on the ends. The arms represent brackets and are fixed in any position along a crosstop pivotally connected to levers.

EFFECT: cross-travel mechanism becomes simpler and makes it possible to aid a patient by one person while moving from a bedstead (an operational table) to the bed and back.

2 cl, 3 dwg

Description

The invention relates to medical equipment and allows one person to lift a patient from a bed or from an operating table, move and lower him on an operating table or bed.

A device for lifting and transporting patients [1] is known, comprising an electric cart mounted on it with a telescopic frame hoist that can be rotated about a vertical axis, and stretchers equipped with elastic tapes that can be rotated about a frame around a horizontal axis. The disadvantage of this device is that the elastic bands come unfastened from the stretcher after laying the patient on the bed and must always be under it, which makes the patient uncomfortable. Being a relatively large-sized vehicle, the device cannot be used in tightly-packed hospital wards.

Known trolley for transporting patients [2], containing a lifting platform mounted on the chassis, on which a bed is installed through a system of levers, which is an endless belt in the transverse direction. The bed with the lifting platform is coordinated in height with the bed or the operating table and the system of levers is fed at an angle to the patient who is lying on his side. Then the patient is laid on the edge of the bed and pushed by someone from the medical staff when the transverse endless tape is turned on, moves to the middle of the bed. Then the bed is moved by a system of levers to the trolley and the patient is transported to the desired location. The transfer of the patient from the bed to the operating table or bed occurs in the reverse order. The disadvantage of this trolley is that the transverse movement of the bed is carried out by two rather complex mechanisms, and the bed itself is a device difficult to manufacture. The transfer of the patient should be carried out by at least two members of the medical staff, someone must keep the patient on his side, and someone let the bed down. And in the case when the bed is near the wall, keeping the patient on his side is generally problematic, since the approach to the patient is limited.

Known trolley-lift for patients [3], containing a frame in the form of telescopic racks on wheels, lower and upper frames connecting the racks, a bed connected to parallel levers mounted on the upper frame and connected to a self-locking drive, and a latch mounted on the upper frame. The trolley-lift is fed into the room and is installed parallel to the patient's bed. Then the upper frame rises along the telescopic racks to the level of the mattress and is fixed with a latch to the bed, after which the bed is driven by the drive onto the mattress, and the patient is turned on its side, making room for the feeding bed. After supplying the patient’s bed, turning on his back, they are moved to the bed, and then with the drive they are moved to the trolley itself, after which, after unlocking it, the patient is transported to the necessary place. The patient moves from the cart to the bed in the opposite direction. The movement of the patient to the operating table and back is similar.

The disadvantage of the design of this trolley is that the vertical movement and horizontal movement of the bed in this trolley is provided by two different mechanisms, which is quite difficult in itself. The latch, which ensures the stability of the trolley during lateral movement of the patient, is a very complex and problematic unit in the presence of different designs of beds and designs of operating tables that differ from the designs of beds. In addition, there should be a device that blocks the lateral movement of the patient with an unsecured cart. The drawback of the design of this trolley, as well as the trolley described above for transporting patients, is also the fact that it is impossible to move the patient from the bed on the bed and vice versa, and also, if the bed is located on the wall, it is problematic to keep the patient on his side while feeding his bed.

The objective of the invention is to simplify the mechanism of lateral movement of the patient and providing the possibility of servicing the patient when moving him from the bed (operating table) to the bed and vice versa - from bed to bed (operating table) by one person, ensuring lateral stability of the trolley and reducing the load on the drive, lateral movement of the patient.

This task is achieved by the fact that in the well-known trolley for patients with a base on wheels mounted on the base and connected to a self-locking drive shaft with a pair of rigidly connected levers and a bed, the bed itself is made in the form of separate movable ones, for example, rotatable around a vertical axis, flat elastic lodgements, fixed in at least two positions and fixed to the ends of the brackets, which are made, for example, in the form of brackets and movably fixed in any position mounted on a ball e pivotally connected with levers, which in the diametrically opposite direction from the supporting beam relative to the shaft axis is fixed load.

Figure 1 shows a trolley, side view;

figure 2 is an end view of the elevator trolley mounted to the bed, with the patient laid on the toolbox before lifting it on the carriage, indicating in thin lines the transport position of the toolbox without the patient;

figure 3 is a view of "A" in figure 2, indicating in thin lines of lodgments before summing them under the patient.

The elevator truck contains a base 1 (Fig. 1) with wheels 2 and bearings 3. In bearings 3, a shaft 4 is mounted on bearings, connected to a worm gear 5 having a hand drive handle 6 and mounted on base 1. On the shaft 4, levers are rigidly mounted 7, on which the load is fixed 8. In the same plane with the levers 7 on the shaft 4, the hub 9 of the lever 10 with the glass 11 and the hub 12 of the lever 13 with the glass 14 are rigidly mounted. In fact, the levers 7 are a continuation of the levers 10 and 13 with the hubs 9 and 12, just for ease of patient care, the levers 7 are shifted. The levers 10 and 13 are curved to reduce the length of the base 1, which improves the maneuverability of the cart. In the cups 11 and 14, a bearing beam 15 is mounted on the bearings, on which the housings 16 are movably mounted, fixed in any position on the beam 15 by screws 17. The brackets 18 and 19 are rigidly connected to the housings 16, at the ends of which there are bushings 20 with spring-loaded latches 21. On the bushings 20 there are flat elastic tool holders 22 and 23 with pads 24 and 25. Three brackets 18 and one bracket 19 are installed on the carrier beam 15. Two tool holders are installed on each bracket. Lodgements 23 (Figure 2) are intended for the head of the patient 27 lying on the bed 26. Lodgements 22 are designed in pairs to bring them under the patient in the shoulders, pelvis and lower legs. Eight lodgments (Figure 3) is their minimum number sufficient to lift the patient, and the distance between the lodges in the pelvis and lower legs may be less than that shown in the drawings.

Lifting and moving the patient using a trolley is as follows.

The trolley-lift is installed parallel to the bed 26 (Figure 2) with the patient 27 at a distance from its own axis to the axis of the bed, approximately equal to the length of the shoulder of the levers 10 and 13. Then the nurse installs on the support beam 15 (Figure 3) in accordance with the growth of the patient the brackets 18 and 19, fixing them with screws 17. After that, turning the handle 6, turns the levers 10 and 13 and feeds the carrier beam 15 with brackets 18 and 19 and with lodges 22 (Figure 2) and 23 to the bed 27. Then the nurse, lifting alternately the parts of the patient’s body, brings the bed 90 degrees by turning cients 22 and 23 (Figure 3) under the tibia, head, shoulders and the pelvis of the patient. The latches 21 (Figure 2) in this case, first, when pressed, the bushings 20 are released, and then after turning the lodgment 22 and 23, both the bushings 20 and the lodgment 22 and 23 are fixed. Thus, the patient 27 is transferred from the bed 26 to the bed, formed by lodges 22 and 23, by one person. After that, rotating the handle 6 in the opposite direction, raise the patient 27 to the transport position, namely, until the levers 10 and 13 turn into a vertical position. The patient is transferred to the bed or the operating table in the reverse order, that is, the patient is lowered on lodgment 22 and 23 onto the operating table or bed, and then, lifting parts of the patient’s body one by one, the lodgment 22 and 23 are brought out from under it. This operation can also be performed one person. By turning the levers 10 and 13 at an angle of 90 degrees, the patient is moved horizontally, and by turning the same levers relative to their horizontal position by an angle of ± 15 degrees, the patient is moved vertically. Giving the levers of horizontal movement of the patient the function of vertical movement greatly simplifies the mechanism of lateral movement of the patient, that is, an additional mechanism of vertical movement is simply not needed. To shift the patient on the other side of the trolley, it is necessary to rearrange the handle 6 on the other side of the gearbox 5.

With the horizontal position of the levers 10 and 13, with the patient lying on the tool holders 22 and 23, the maximum overturning moment from the weight of the carrier beam 15, the weight of the tool holders 22, 23, and the details of their fastening acts on the lift truck relative to the axles of the wheels 2 located on the patient side and patient weight. From the same weight, relative to the axis of the shaft 4, the torque also acts on the drive 5. The load 8 mounted on the levers 7, with a relatively small weight, ensures the stability of the trolley in the transverse direction, since the distance from the load 8 to the tipping point of the trolley significantly exceeds the action arm the force from which the overturning moment arises. In this case, the moment acting on the actuator 5 is reduced by an amount determined by the weight of the load 8 and the arm of the levers 7. But the weight of the load 8 and the arm of the levers 7 are limited by the condition of lateral stability of the trolley without a patient, that is, the load 8, with the horizontal arrangement of the levers 10 and 13 , must not turn the empty trolley in its direction.

Information sources

1. A.S. No. 946541 USSR, IPC A61G 7/10 dated 07/30/82. Bull. Number 28.

2. A.S. No. 1616660 A1 SU, IPC A61G 3/00 dated 12.30.90. Bull. Number 48.

3. A.S. No. 1777863 A1 SU, IPC A61G 7/10 dated 11/30/92. Bull. No. 44 (prototype).

Claims (2)

1. A trolley-lift for patients, containing a base on wheels, mounted on the base and connected to the drive shaft with a pair of rigidly connected levers and a bed, characterized in that the bed is made in the form of a separate flat, for example, rotatable around a vertical axis, flat elastic lodgements that can be fixed in at least two positions and fixed at the ends of the movable brackets, and the brackets are made, for example, in the form of brackets and installed with the possibility of fixing in any position along the supporting beam, arnirno connected to levers. 2. A trolley for patients according to claim 1, characterized in that in the diametrically opposite direction from the carrier beam relative to the axis of the shaft, the load is fixed on the levers.

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