RU2814531C1 - Patient lifting and moving device - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to devices for movement of patients with limited mobility within buildings. Device for lifting and moving patients includes a power source, a traverse fixed on the belt for lifting and lowering, a movable and support rails with a busbar installed in the movable and support rails, lifting unit fixed on support rail by means of roller supports, each of which contains two axles. Lifting unit includes a lifting mechanism with a belt for lifting and lowering, a control unit and a command collection board. Lifting mechanism includes a brushless motor equipped with three Hall sensors, coaxially connected to a three-stage planetary reduction gear and a lifting drum with a belt for lifting and lowering. Lifting drum comprises a locking mechanism including a movable retainer arranged on the platform of the lifting drum, fixed on the lifting drum by a spring. Lifting drum housing comprises internal toothed profile.

EFFECT: increasing the safety and reliability of lifting, lowering and moving a patient with disabilities.

3 cl, 3 dwg

Description

The invention relates to the field of healthcare, namely to medical equipment for moving patients with limited mobility within buildings. The device for lifting and moving patients can be used in medical institutions, rehabilitation centers, social institutions, and at home.

Prior Art

A device for lifting patients is known from the prior art (EP3622934, publ. 03/18/2020), the device includes a motor and a drum. The drum is functionally connected to the engine. The drum can be selectively driven by a motor. The housing includes at least a motor and a drum. The support element includes a first end and a second end. The first end of the support element is operatively connected to at least one of the body and the drum. The second end of the supporting element is functionally connected to the patient support unit. The electrically conductive element is located inside the supporting element. The user interface is configured to operate the patient support assembly in vertical and horizontal directions.

A lifting system is known from the prior art (EP3095426, publ. November 23, 2016). The movement system for use with a patient lift system includes a motor. The drum is functionally connected to the engine. The drum is configured to be selectively driven by a motor to rotate in one of the clockwise and counterclockwise directions. The lifting belt is connected to the drum. The lifting belt can extend and retract relative to the carriage of the patient lift harness as the drum rotates. A manual release, operatively coupled to the reel, is actuated to selectively disengage the reel from the motor, allowing the lifting sling to be manually pulled out. Also disclosed is a patient lift pendant system, including a movement system and a method for manually extending a lifting strap of the patient lift pendant system.

Devices for lifting and moving patients are known from the prior art, describing the use of electric drives and locking mechanisms - US 20200230005 (publ. 07.23.2020), WO2014/17036 (pub. 10.23.2014).

The disadvantages of the above solutions are the use of a commutator brush motor, the service life of which is reduced due to wear of the brushes, a belt drive that has unstable speed when the load changes, and an unreliable locking mechanism, which manifests itself in a smaller contact area and location. In addition, the above solutions have a high design complexity, which also increases the risk of failure.

The essence of the invention

The problem to be solved by the claimed invention is to ensure safe transportation of the patient within one room.

The technical result of the present invention is to increase the safety and reliability of lifting, lowering and moving a patient with disabilities.

The solution to the problem and the technical result are achieved by the fact that a device is proposed for lifting and moving patients, which includes a power source, a traverse mounted on a tape for lifting and lowering, a movable and support rail with a busbar installed in them, a lifting block mounted on the support rail using roller supports, each of which contains two axles, wherein the lifting unit includes a lifting mechanism with a belt for lifting and lowering, a control unit and a command collection board, wherein the lifting mechanism includes a brushless motor equipped with three sensors Hall, coaxially connected to a three-stage planetary gearbox and a lifting drum with a tape wound on it for lifting and lowering, wherein the drum contains a locking mechanism, including a movable stopper located on the drum platform, secured to the drum by a spring, and the drum body contains an internal gear profile.

At one end of the tape, in a particular case, a quick-release hook is attached.

In a particular case, a rotating block is located on the traverse.

The invention is illustrated by drawings that explain the essence of the technical solution:

Fig. 1. Device for lifting and moving patients;

Fig. 2 Lifting block;

Fig. 3 Enlarged part of the locking mechanism.

In the figures, the following structural elements are indicated by numbers:

1 - lifting block;

2 - roller support;

3 - traverse;

4 - tape;

5 - movable and support rail;

6 - movable stopper;

7 - spring;

8 - quick-release hook;

9 - brushless motor;

10 - control unit;

11 - battery;

12 - drum.

Carrying out the invention

The device for lifting and moving patients consists of a power source, a traverse (3), which is fixed on a tape (4), in a particular version on a quick-release hook (8), a lifting block shown in Fig. 2, movable and support rail (5). The lifting block is fixed to the support rail (5) using roller supports (2), each of which contains two axles. The lifting unit contains a lifting mechanism with a belt (4) for lifting and lowering, a control unit (10) and a command collection board. The lifting mechanism includes a brushless motor (9), equipped with three Hall sensors, coaxially connected to a three-stage planetary gearbox and drum (12). A tape is wound on the drum for lifting and lowering. The drum contains a locking mechanism, including a movable stopper (6) located on the drum platform, secured to the drum by a spring (7), and the drum body contains an internal toothed profile.

The device for lifting and moving patients works as follows:

The patient is moved vertically up or down using a lifting mechanism located in the lifting block.

The lifting unit is capable of operating from an alternating power source supplied from the busbar in the support rail, and in autonomous mode from a constant power source, a battery (11). In operating mode, voltage is supplied from the power source, the power board, to the input of the control unit, and from the control unit to the command collection board. The control unit processes control signals from the command acquisition board, supplies power to the brushless motor and Hall sensors, processes signals from the Hall sensors and switches the motor windings, thereby ensuring rotation of the motor rotor. Torque is transmitted through a planetary three-stage gearbox to the drum.

This type of engine, also equipped with Hall sensors, has a higher torque-to-weight ratio, increased reliability, reduced noise, longer service life, which further extends the overhaul interval.

In this case, a tape is wound on the drum, which starts to move. Motor control, such as turning on or off, direction of rotation, speed, is carried out by a control unit and a command acquisition board located inside the lifting block. The patient's movement in the vertical direction is controlled using a remote control with a wired or wireless connection to the lifting unit. The lifting block is suspended on a movable and support rail using three roller supports. Movement in the horizontal direction along the rails is carried out manually.

The drum contains a locking mechanism, which consists of a movable stopper located on the end platform of the drum, and also secured with a spring on it, and a drum body with an internal toothed profile. When the rotation speed of the drum increases above the permissible values, the movable stopper, due to centrifugal forces, overcomes the resistance of the spring, moves to the periphery and engages with the toothed profile of the drum body, ensuring that the movement of the lifting mechanism stops. The toothed profile of the stopper used in the claimed technical solution provides a large contact area, which increases the reliability and reliability of the invention. Placing the locking mechanism directly in the drum without the use of additional supporting parts also increases the reliability and safety of the invention. The claimed technical solution uses three roller bearings in the lifting block to increase the stability of the device for lifting and moving the patient. The supports are represented by loaded nodes, each node has two axes that take up a large load when lifting, lowering and horizontal movement of the device; an additional single-axis support serves to stabilize the oscillatory components. In the traverse device, in a particular embodiment of the invention, there is a rotating block with a thrust bearing assembly, which allows the patient to make the necessary rotation regardless of the applied load on the traverse. A quick-release hook installed at the end of the belt reduces the amount of time required to change the patient support beam.

The combination of all elements of the proposed solution makes it possible to increase the safety and reliability of the device for lifting, lowering and moving a patient with disabilities, which confirms the achievement of the stated technical result.

Claims (3)

1. A device for lifting and moving patients, including a power source, a traverse mounted on a tape for lifting and lowering, a movable and support rail with a busbar installed in the movable and support rails, a lifting block mounted on the support rail using roller supports, each of which contains two axes, while the lifting unit includes a lifting mechanism with a belt for lifting and lowering, a control unit and a command collection board, characterized in that the lifting mechanism includes a brushless motor equipped with three Hall sensors, coaxially connected with a three-stage planetary gearbox and a lifting drum with a tape wound on the lifting drum for lifting and lowering, wherein the lifting drum contains a locking mechanism, including a movable stopper located on the lifting drum platform, secured to the lifting drum with a spring, and the lifting drum housing contains an internal serrated profile. 2. A device for lifting and moving patients according to claim 1, characterized in that a hook is attached to one end of the tape. 3. A device for lifting and moving patients according to claim 1, characterized in that a rotating block is located on the traverse.