CZ305693B6 - Hospital bed with automatic lateral incline - Google Patents

Abstract

A control unit (6) is connected with a device (8) for measuring lateral incline of the area of rest. The control unit (6) is further connected to at least one lifting gear (1, 2, 3) and changes the height thereof in dependence on a required incline. The lifting gears are attached on one side to the hospital bed undercarriage frame (4), while on the other side to the areas of rest frame (5). Control panel (7) of the control unit (6) is provided with a touch display.

Description

Hospital bed with automatic lateral tilt

Field of technology

The invention relates to a hospital bed with an automatic lateral tilt, which by means of three height-adjustable jacks enables the automatic execution of a sequence of lateral tilts of the loading surface, the time and the degree of tilt being adjustable by means of a control panel.

Prior art

The use of three columns for lateral tilting of the bed is a known state of the art, e.g. from patent application WO2009 / 100692. Solving the problem of mechanical fastening of the loading surface to the jacks makes it possible to position the loading surface not only in height, but also laterally. However, this solution does not allow automatic positioning of the loading area without the need for the constant presence of staff at the bed.

Patients lying on a bed for a long time require increased attention from staff in terms of treatment. The reason is that when patients remain in one position for a longer period of time, patients experience pathological phenomena that accompany treatment in bed. These phenomena may include the development of pressure ulcers or the deposition of unwanted secretions in the lower respiratory tract and thus the development of atelectasis or more advanced stages of pneumonia. As the patient's mobility increases, the risk of pneumonics and these conditions decreases. The problem described above can often be encountered, for example, in the department of anesthesiology and resuscitation care. The task of the nursing staff is then to prevent these phenomena by regular manipulation of the patient, which is not a physically simple task for the staff.

In the field of medical technology, great emphasis is placed on the machine representation of staff in the field of patient handling, which can save work and time for healthcare providers. In the field of prevention of pressure ulcers and prevention of the development of pneumonia, special therapeutic platforms or mattresses intended for lateral or kinetic therapy are used.

In the case of the use of special mattresses, the tilting of the patient is enabled by the action of air bags. Gradual inflation of the bags on one side causes the patient lying on this mattress to tilt by the required angle. A similar principle is shown in U.S. Pat. No. 6,047,424 or U.S. Pat. No. 3,775,781. The disadvantages of these solutions are the limited tilting possibilities and the high noise level caused by the mattress ventilation and which disturb the patient or patients in the vicinity. In addition, if these mattresses do not themselves contain an anti-decubitus system, no other anti-decubitus mattress can be used at the same time.

In the field of lateral therapy, special therapeutic devices are also used, which have a movable tilt mechanism adapted directly for performing rotational movements of the loading surface under the patient. Some known solutions include a loading surface which is rotatably connected to the chassis of the therapeutic device in an axis running longitudinally through the center of this loading surface, whereby it can be rotated. This principle can be seen in U.S. Pat. No. 6,701,553, which shows such a loading surface, which also has the possibility of height adjustment. Mechanically, the rotation of the bed can also be solved by placing the loading surface in a circular structure, where it is possible to perform its complete rotation with the help of a special fixation of the patient. An example of this mechanics is shown in U.S. Pat. No. 6,282,736. There are also other solutions of special mechanics of this method of therapy, such as U.S. Pat. No. 6,385,801, U.S. Pat. No. 4,071,916 and U.S. Pat. No. 3,434,165. and the price of the fact that they can be used in specialized therapeutic facilities and not in ordinary hospital beds. The staff is therefore forced to deal with the transport of the patient from the bed to this facility.

The aim of the technical solution is to design a device with which it is possible to automatically change the position of the patient directly on the hospital bed without the need for the presence of nursing staff at the bed.

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The essence of the invention

This is achieved by a hospital bed with automatic lateral tilt, comprising a control panel, a device for measuring the lateral tilt of the loading area and a control unit to which at least three height-adjustable jacks are connected, which are attached on the one hand to the chassis frame and on the other hand to the frame. according to the invention, the essence of which consists in that the control unit adjusts the inclination of the loading surface about the longitudinal axis of the bed after a preset time interval to a preset angle by adjusting the height of at least one of these height-adjustable jacks.

A preferred embodiment is that the control unit adjusts the inclination of the loading surface about the longitudinal axis of the bed after a preset time interval has elapsed, to a preset angle repeatedly.

According to a preferred embodiment, the control panel comprises the function of activating the automatic lateral tilt, the function of setting the time interval before the start of the tilting of the loading surface, the function of setting the tilt angle of the loading surface and the function of pausing the automatic lateral tilt.

According to a preferred embodiment, the control panel comprises a touch screen.

According to a preferred embodiment, the device for measuring the lateral tilt of the loading surface comprises an accelerometric sensor.

According to a preferred embodiment, before starting the automatic lateral tilting, the control unit checks whether the sides of the bed are raised.

Explanation of drawings

Fig. 1 shows a hospital bed with an automatic lateral tilt. Fig. 2 shows the touch display.

Examples of embodiments of the invention

An example of a bed with a lateral tilt can be seen in Figures 1 and 2. Figure 1 shows height-adjustable jacks J, 2, 3 providing height positionability, including lateral tilts of the bed - tilts around the longitudinal axis of the bed. The jacks 1, 2, 3 are connected on one side to the chassis frame 4 and on the other side to the loading surface frame 5. The movement of the jacks is ensured by electric motors (not shown). One of the possible embodiments of the height-adjustable jack can be a telescopic jack described in utility model CZ6654.

Fig. 1 shows the control unit 6, its location on the bed is on the frame 5 of the loading surface. The function of the control unit 6 is to ensure the processing of the signal from the control panel 2 and the signal from the device 8 for measuring the lateral tilt of the loading surface. The control unit 6 further provides control of the height-adjustable jacks 1, 2, 3. The design of the loading surface frame 5 on the three height-adjustable jacks 1, 2, 3 allows the loading surface to move in a horizontal position during synchronous movement of three jacks 1, 2, 3 from the same position. The design of the loading surface frame 5 on the three height-adjustable jacks 1, 2, 3 further allows the loading surface to be tilted to a lateral position - tilting about a longitudinal axis. Tilts to the lateral position are ensured by synchronous, alternating movement of the jacks 2 and 3. The design of the loading surface frame 5 on the three height-adjustable jacks 1, 2, 3 further allows the loading surface to be tilted about the transverse axis and reach the Trendelenburg and Antitrendeleburg positions. The inclinations for reaching the Trendelenburg position are ensured by synchronous, alternating movement of the jack 1 and the pair of jacks 2, 3, the pair of jacks 2, 3 moving together in one direction which is opposite to the direction of movement of the jack 1.

The measurement of the lateral tilt of the loading surface is ensured in the proposed solution by means of an accelerometer. The accelerometer is located on the frame 5 of the loading surface together with the control unit 6. Alternative sensing elements can also be used to measure the lateral tilt, for example: limit switch, Hall probe, potentiometer and similar elements commonly known to designers. The device for measuring the lateral tilt of the loading surface can also consist of combinations of individual sensing elements located at different places on the bed.

The positioning of the frame 5 of the loading surface is ensured by means of the control panel 7. According to the proposed solution, the control panel 7 is located in the side of the bed (not shown). According to the proposed solution, the control panel 7 comprises a touch screen 9 with a user interface. An alternative solution of the control panel 7 may include a screen and auxiliary control buttons, or the buttons themselves. The control panel user interface allows you to set up Automatic Lateral Therapy (ALT). ALT allows long-term alternation of left and right tilts in the lateral plane. The user interface allows you to set its two basic parameters: tilt angles in degrees and dwell times in tilts.

The proposed solution includes a touch screen 9 with a graphical user interface. The graphical user interface allows you to conveniently set individual ALT parameters. Figure 2 shows that the tilt angles are set in the five lower icons 10, while the tilt dwell time is set in the five upper icons 11. The angle value in the lower icon corresponds to the duration entered in the nearest upper icon.

For patient safety, the control unit 6 is equipped with a control mechanism preventing the lateral positioning from being triggered unless the sides are in the upper position. The position of the side panel is determined by a limit switch located on the outside of the loading surface frame. The limit switch is pressed when the side is raised and closed in the upper locked position of the side. According to the proposed solution, the control unit 6 does not allow the start of the ALT function if the sides are not in their locked position in the upper position and the limit switch is not closed.

Claims (9)

A hospital bed with an automatic lateral tilt, comprising a control panel (7), a device (8) for measuring the lateral tilt of the loading area, a control unit (6), to which at least three height-adjustable jacks (1), (2) are connected, (3) which are attached on one side to the chassis frame (4) and on the other side to the loading surface frame (5), characterized in that the control unit (6) is connected to a device (8) for measuring the lateral tilt of the loading surface. surface for tilting the loading surface frame (5), which is connected to height-adjustable telescopic jacks (1), (2), (3) arranged for tilting the loading surface frame (5) and the control unit (6) is further connected to the control a panel (7) for activating the position of the telescopic jacks, for tilting the frame (5) of the loading surface about the longitudinal axis of the bed at a corresponding angle of inclination and with a corresponding residence time therein. Hospital bed with automatic lateral tilt according to claim 1, characterized in that the control unit (6) is connected to a device (8) for measuring the lateral tilt of the loading surface for repeated tilting of the loading surface frame (5) about the longitudinal axis of the bed in a corresponding angle of inclination and the corresponding residence time in it. Hospital bed with automatic lateral tilt according to claim 2, characterized in that the control panel (7) activates the automatic lateral tilt. Hospital bed with automatic lateral tilt according to claim 3, characterized in that the control panel (7) activates the automatic lateral tilt after a preset time has elapsed. 5 Hospital bed with automatic lateral tilt according to claim 3, characterized in that the control panel (7) activates the automatic lateral tilt at a corresponding angle. Hospital bed with automatic lateral tilt according to claim 3, characterized in that the control panel (7) suspends the automatic lateral tilt. An automatic lateral tilt hospital bed according to claim 2, characterized in that the control panel (7) comprises a touch screen. The hospital bed with an automatic lateral tilt according to claim 1, characterized in that the device (8) for measuring the lateral tilt of the loading area comprises an accelerometric sensor. The method of tilting a hospital bed as claimed in claim 1, characterized in that before starting the automatic lateral tilting, the control unit (6) checks whether 20 the sides of the bed are raised. 2 drawings List of reference marks: 1 first jack 2 second jack 3 third jack 4 chassis frame 5 frame loading area 6 control unit 7 control panel 8 device for measuring the lateral tilt of the loading surface 9 touch screen 10 bottom icons 11 top icons.