SK9723Y1 - Weighing apparatus on a patient support with scissor lifting - Google Patents

Abstract

The technical solution involves a weighing device, especially for weighing of patients at a hospital bed. The device comprises a loading area placed at a frame which is joined with the frame of an undercarriage by means of positioning cross lift or scissor lift of the bed. The cross lifting device is arranged and joined with the undercarriage frame by means of a double console tack, that comprises the weighing device able to determine the weight of a patient.

Description

The field of technology

The technical solution relates to a weighing device, especially for weighing a patient on a hospital bed, which includes a bed placed on a frame that is connected to the chassis frame by means of a positioning cross or scissor lift of the bed. This scissor lift is arranged and connected to the chassis of the frame by means of a double cantilever attachment, which contains a weighing device capable of determining the weight of the patient on the bed.

Current state of the art

Monitoring a patient's weight during a stay in a medical facility or nursing facility is very important, because changes in the patient's weight provide the nursing staff with information about the patient's food intake, fluid intake, and excretion. Furthermore, based on the weight information, the attending physician or staff can determine the amount of medication that the patient should receive.

Classical weighing is performed on ordinary stationary scales, to which the patient must be transported. However, such handling of the patient is not always appropriate or possible, due to the health condition of the patient, who may be completely bedridden after surgery or after an accident, in some cases it is not possible to handle the patient after surgery in such a way that it is possible to detect at least the approximate weight of the patient to determine the medication.

Another option is the use of walk-in scales, when the patient is also brought to the scale with a bed. Even this solution is not very practical, in some cases such weighing systems may not be available at all or may be in another part of the medical facility. In addition, to determine the patient's weight, the weight of the bed, including the accessories placed on the bed, must be subtracted from the determined weight. Furthermore, for patients permanently attached to support equipment (such as ventilation, infusion, EKG, etc.), this method is not possible or appropriate, primarily due to transport to another part of the hospital where such weight equipment may be located.

Monitoring the patient's weight directly on the bed is an effective and modern solution. The advantage of this method of measurement is the ability to monitor weight gain or loss continuously without unwanted manipulation of the patient. The bedside weighing device also enables other functions, such as remote monitoring of whether the patient has left the bed, connection to a computer, blocking of the scale when handling objects that do not require weighing, etc. However, the most important aspect for the staff is to weigh the patient's weight and its changes, at least as a guide, in order to estimate the amount of medication that needs to be given to the patient. The amount of medication is determined depending on the estimated weight of the patient.

In principle, three types of bed configuration with a weighing device are used for existing beds.

One such type is sensors located in the cargo area. This means that the bed consists of a chassis frame on which a lifting mechanism is located, at the upper end of which there is a bed frame, and inside the bed is a weight system that weighs the weight of the bed and the patient. The advantage is that only the bed surface with the patient without bed accessories is weighed. Such systems are very expensive in terms of purchase price and production, and therefore are not affordable for many devices. In addition, in the event of a failure of the weighing system, it is necessary to dismantle the entire loading area.

The second type of weight system can be an external mat, which is not part of the bed and is placed between the mattress and the bed surface in the place of the seat. The disadvantage of this type of weighing is the fact that the patient has to sit down, which is not possible in the case of a bedridden patient. Another disadvantage is the possibility of contamination of the pad with fluids excreted by the patient in bed (e.g. urine or blood), which can enter the system and disable it. Even this method of weighing may not be accurate if the weight of the mattress, which is subtracted from the measured weight, is inaccurately entered. Although the mobility of weighing pads is an indisputable advantage, their purchase price is higher.

The third type are sensors located in the bed chassis, i.e. the frame is the frame of the chassis and the weighted load is the patient including the bed surface. Such a solution is presented, for example, by patent US4974692 from 1990. The solution is structurally simpler, which is its advantage, on the other hand, this type of weighing system still provides many disadvantages. The main disadvantage of this solution is the higher weight, which also changes when the bed is raised, and the weight of the accessories as well. Among other things, another technical disadvantage of this solution is the three-frame construction, the bed thus consists of a bed frame, a weight frame and a chassis frame. Such a construction is very impractical for the staff, because the bed is quite heavy due to the weight frame, it can be handled with difficulty and the staff has to use more force to transport it.

In existing hospital beds, systems with four force sensors (so-called strain gauges) located in the weighing frame are used to weigh the patient, when theoretically only three sensors can be used. To achieve the best possible accuracy, the sensors in the weighing frame are placed as far as possible at the edges of the frame, so that the measured base is as large as possible. Another factor affecting weighing accuracy is the principle of storing individual sensors. Such placement of the sensors is intended and suitable for a scissor lift without the possibility of tilting the patient's bed surface to the Trendelenburg position, that means that the patient bed surface can only be positioned from the lowest position to the highest position and not tilted.

The essence of the technical solution

The presented technical solution of a console weighing system with an estimate of the patient's weight is intended to eliminate the aforementioned shortcomings. The cantilever weighing device is primarily intended for beds with a scissor lift, which allows the bed surface to be tilted into the Trendelenburg or anti-Trendelenburg position. Most beds with a scissor lift generally do not have a weight system at all, because it is technically or financially demanding for these types of beds. In the case of positioning the bed surface in the Trendelenburg position or anti-Trendelenburg position, when the distribution of the patient's weight on the bed surface changes depending on the change in the patient's position, it has not been possible until now to correctly measure the patient's weight with the smallest possible deviation. Most beds that are equipped with weights in some way have a weight system that is located in the double undercarriage frame. The weight system for beds with a scissor lift type cannot have weights placed under the bed surface due to poorly distributed forces. If the weighing system does not work with the correct distribution of forces, it cannot weigh well and determine the correct weight.

The presented device of the cantilever weight system consists in the fact that the lower frame of the bed chassis, which is equipped with wheels on its lower side, is connected to the upper frame of the bed surface by means of a scissor lift. There are two types of cantilever weight attachment to the scissor lift mechanism on the lower traveling frame of the bed so that it is possible to weigh the patient even when the bed is positioned in different positions (e.g. Trendelenburg and anti-Trendelenburg). A scissor lifting device is attached to the supporting part of the bed in the lower part, which consists of one short supporting arm and one long supporting arm. These arms are preferably under the bed surface four and are mutually interconnected by connecting material so that they can rotate around the axis and the bed surface can be manipulated up and down. The supporting part of the loading surface is also equipped with motors, which include a piston rod that controls the movement of the arms vertically up and down, which changes the height of the loading surface from the lowest position to the highest position. However, the motors together with the scissor mechanism can enable the positioning of the bed in the Trendelenburg position or the anti-Trendelenburg position. This positioning can be achieved thanks to the fact that at least two opposite long arms of the scissor lift can move horizontally from left to right and vice versa so that at least one part of the bed surface can be raised above the level of the other part of the bed surface. In the mentioned embodiment, this enables the first type A weight bracket attachment. Said short and long arms are connected to the bed surface by means of a pin, while the short arms are connected to the long arm at their opposite end approximately halfway along the length of the long arm also by means of a pin. All four long arms are connected to the undercarriage of the lower frame by means of two opposite pairs of weight brackets A or B by means of pivots. The presented technical solution contains two different types of weight brackets A and B located on the chassis frame.

The first type of weight bracket is type A, when the bracket is attached via a force sensor (tensometer), which is placed horizontally in the chassis frame and is connected to the bracket of type A by connecting elements in the connecting holes. This type of bracket A is characterized by the fact that the bracket is formed by a special profile with a guide rail, which allows the long supporting arm of the scissor lift to be movably connected to the bed chassis. The long arm is connected to the A-type weight bracket by means of a slider and a pin, where the slider moves in a guide bar, which is equipped with locking elements at both ends. This bracket A thus allows the long arm to move horizontally from left to right and vice versa, and this movement is important in order to be able to position the bed in the Trendelenburg position or the anti-Trendelenburg position. This type of bracket A is preferably placed on the chassis in pairs opposite each other under the foot part of the bed surface, but in an alternative version it can also be placed in pairs opposite each other on the chassis under the head part of the bed surface. In another alternative embodiment, this type of bracket A can be used under the entire bed in each corner of the chassis.

In the presented technical solution, a second type of bracket B is depicted in an advantageous design. This bracket is again attached via a force sensor (tensometer), which is located on the lower part of the chassis frame, through which it is connected using fasteners (pins, rivets, screws, etc. ) attached second type of bracket. This bracket B is also formed by a special metal profile which contains a hole for connection with the long arm, to which the long arm of the scissor lift is statically fixed at one point so that the arm rotates about the axis of rotation and so that the bed can be lifted up and down. This type of console B does not allow tilting the sleeping surface of the bed into the Trendelenburg position or the anti-Trendelenburg position. In the presented solution, this bracket B is placed in pairs opposite each other under the head part of the sleeping surface of the bed on the lower side of the traveling frame. This type of bracket B can alternatively be used for all scissor lift arms under the entire bed surface on the chassis frame or alternatively under part of the foot or head bed surface on the chassis frame.

In an advantageous alternative embodiment, however, the bed advantageously uses a combination of two pairs of type A weight brackets facing each other on one side of the bed and two pairs of type B weight brackets on the opposite side of the bed chassis.

The weight consoles allow both the patient to be weighed on the upper bed frame and at the same time allow the scissor lift to move up and down without the need to have another special frame on which the support arms of the bed lift scissor mechanism slide.

The consoles of the weighing system are anchored to the traveling frame so that the force sensors (tensometers) of the weighing system are in the intermediate space between the chassis frame and the supporting traveling console A or B, in which the arms of the scissor lift move horizontally along part of the console or pivot around the axis of rotation. Both types of weight brackets A and B are preferably made of iron material, but they can be made of metal alloy or other type of metal, such as aluminum, etc. These weight brackets A and B can also be made of special hardened or sufficiently strong plastic or carved from wood. They can be fixed using pins, screws, nails or rivets.

It follows from the above that a cheaper solution for placing the weight system on beds with a scissor lift has been created. The advantage of this solution is that it is possible to weigh the patient on the bed with a scissor lift even when tilted into the Trendelenburg position and the anti-Trendelenburg position, and also that the bed does not contain a special weighing frame, so it is lighter and easier to handle. Thanks to this weighing system for estimating the patient's weight, medical staff can provide better care to patients without having to manipulate the patient as is the case with other weighing systems.

Overview of images on drawings

In fig. 1 is an axonometric view of a bed with a scissor lift attached to a chassis with a cantilever weight attachment.

In fig. 2 is a side view of a scissor lift hospital bed with a cross section of the cantilevered weight attachment of the scissor lift illustrated.

In fig. 3 is a cross-sectional side view of cantilever weight attachment A and B.

In fig. 4 shows a side cross-section of a part of the chassis with a cantilevered weight attachment 6A on the chassis.

In fig. 5 shows an axonometric view of the part of the bed with a cantilever weight attachment 6A with a strain gauge.

In fig. 6 shows an axonometric cross-section of the cantilever weight attachment 6A with a strain gauge.

In fig. 7 shows a side cross-section of the cantilever weight attachment 6B with a strain gauge.

In fig. 8 shows an axonometric view of the part of the chassis with the cantilever weight attachment 6B.

Implementation examples

An example of a technical solution is the axonometric representation of the bed in fig. 1, on which it is possible to see the bed 1 with the bed surface 2 connected to the chassis frame 7 by means of a pair of scissor lifting mechanism 3. The chassis is equipped at each of its corner ends with traveling wheels 8. It is clear from this illustration that each pair of scissor lifting mechanism 3 consists of two short supporting arms 4 and two long supporting arms 5, which are connected in pairs to the sleeping surface 2 of the bed by means of pivot pins and are attached to the undercarriage 7 of the bed by means of cantilever attachments 6A and 6B. Each pair of scissor mechanism 3 is controlled and connected to the bearing surface 2 by means of the pistons 10 of the control motor of the lifting mechanism 11, which is connected to the scissor mechanism 3 and the bearing surface 2. This control motor of the lifting mechanism 11 and the piston rod 10 connecting the short arms 4 and the long the arms 5 with the sleeping surface 2 of the bed are not shown in this illustration.

In the advantageous embodiment in fig. 1, there are two pairs of short arms 4 and long arms 5 placed opposite each other in pairs. The long arms 5 of this scissor lift 3 are connected at their lower end to the chassis 7 of the bed by means of a weight bracket attachment 6A, which advantageously enables the movement of the long arms 5 along the guide bar 18 of the weight bracket 6A from left to right and vice versa, which creates a so-called movable weight bracket 6A. At the same time, its attachment also enables a rotary movement, which in turn enables the movement of the long arm 5, which is part of the scissor lift 3, from the lowest position to the unfolded highest position. The weight bracket 6A has the shape of a metal profile and is formed by a guide bar 18 in the shape of a rail. A slider 19 is placed in this guide bar 18, which enables the long arm 5 of the scissor lift 3 to be attached. The guide bar 18 has locking elements 15 at both ends, which serve to secure the slider 19 in the guide bar 18. movement of the glider 19 from one side to the other. The cantilever attachment type 6A allows the movement of the long arm 5 of the scissor lift 3 horizontally from left to right, and its guide bar 18 is at least large enough to allow the bed surface 2 to be tilted into the Trendelenburg position or the anti-Trendelenburg position. The weight bracket 6A is formed by a specially shaped metal profile, it can be formed from a thick-walled sheet metal, which can form the guide bar 18, or it can be welded from several pieces of sheet metal into the relevant advantageous shape, which in its shape will correspond to the guide bar 18, is advantageous for attaching of the long arm 5 of the scissor lift 3 and will enable its movement horizontally along the guide bar 18.

In this advantageous embodiment, the second pair of short arms 4 and long arms 5, as the second scissor lift mechanism 3, is located under the head part of the sleeping surface 2 of the bed, while both opposite long arms 5 of this mechanism are connected to the chassis 7 of the bed by means of a weight bracket attachment 6B , which allows the arm to only rotate and lift the long arm 5 from the lowest position to the highest raised position.

In the following fig. 2 shows a side view of a bed 1 with a bed surface 2 with a pair of scissor lifts 3, which is connected to the bed surface 2 by means of four short arms 4 and four long arms 5, while in this version only two short arms are visible from the side 4 and two long arms 5. All mentioned arms 4 and 5 of the scissor lift 3 are connected to the bearing surface 2 by means of pivot pins 9, which are not shown in this embodiment, and the short arms 4 are interconnected by means of a pivot shaft, which is also not shown, with the piston rod 10 of the motor and with the motor 11 of the lifting mechanism 3, which is attached to the lower side of the bed surface 2. The long arms 5 are connected to the short arms 4 by means of pins 12, through this attachment the movement of the motor 11 of the lifting mechanism 3 is transmitted so that the long arms 5 enable the bed surface 2 to be lifted from the lowest position to the highest raised position. To enable the correct movement of the scissor long arms 5 and their correct lifting, their advantageous weight bracket attachment 6A and 6B with the lower frame of the bed chassis 7 serves, among other things.

On the side section in fig. 3 shows a cross-section of the upper bed surface 2 and the lower chassis 7 of the bed with bracket attachment 6A and 6B. These two attachments differ from each other in the manner in which the long arm 5 of the scissor lift 3 is attached and the movement of the long arm 5 on a given weight bracket attachment 6A and 6B is allowed. All four long arms 5 of the scissor lift 3 are connected to the lower frame by means of pivot pins 13 and at the same time are attached to the weight brackets 6A and 6B. A detailed description of the weight bracket attachment 6A and 6B will be given in the following figures. Weight bracket attachment of scissor lift 3 in fig. 3 also shows a preferred attachment of the force sensors (strain gauges) 14 of the weighing system for estimating the patient's weight. From this illustration it is clear that the force sensors 14 are preferably located outside the chassis 7 of the bed horizontally and it is also clear that the sliding weight brackets 6A and the weight bracket 6B for the rotary movement of the long arms 5 of the scissor lift mechanism 3 are attached through the frame and the sensors forces 14 on both sides so that it is possible to make a correct estimate of the patient's weight in any position of the bed surface 2. In an alternative embodiment, the long arms 5 of the scissor lift 3 could be attached only to weight brackets of type 6A under both the head and foot parts of the bed 1, or alternatively, they could only be attached to weight brackets of type 6B. But in the most advantageous version, a weight bracket pair attachment is used, that means on one side, for example, under the foot part of the bed surface 2, weight bracket beds 6A are placed on the chassis 7, and weight brackets 6B are placed under the head part of the bed bed surface 2; or just the opposite, under the foot part of the bed surface 2, the beds of the weight bracket 6B are located on the chassis 7, and under the head part of the bed surface 2, the weight brackets 6A are located.

Further, fig. 3, where a side view of the cross-section of the bed 1 is shown, the joint attachment 12 is also indicated, by means of which the lifting scissor mechanism 3 is attached and connected to the bed surface 2 of the bed. The figure also shows the motors 11 of the lifting scissor mechanism 3 with the motor piston rod 10, which allow the bed to be positioned from the raised position to the lowered position and vice versa, in this version the bed 1 is visible in the raised position. In the same way, these motors 11, in conjunction with the scissor mechanism 3, make it possible to bring the sleeping surface of the bed 2 into the Trendelenburg position and the anti-Trendelenburg position, which is also assisted by the movable weight bracket attachment 6A, which enables the movement of the long arm 5 horizontally along the axis of the weight bracket 6A scissor lift 3 .

In the subsequent illustration in fig. 4 shows a cross-section from the side of the part of the chassis 7 of the bed, including the wheel 8, and a cross-section of only one weight bracket attachment 6A, which advantageously enables the horizontal movement of the long arm 5 of the scissor mechanism 3. In this illustration, it is advantageously clear that the weight bracket 6A for attaching a long arm 5 consists of a specially shaped profile. At the same time, it is clear that there are connecting holes 17 in the chassis 7 of the bed and that the force sensor 14 also has connecting holes 17 and connecting elements 16 (such as screws, wood screws or rivets) are used for attachment. Preferably, at least one connecting element 16 can be used in at least one connecting hole 17, but preferably four to eight connecting holes 17 are formed to the chassis frame 7 and through the force sensor 14. In the same way as the connecting holes 17 in the chassis frame 7 and in the sensors forces 14, there is at least one connection hole 17 in the profile of the weight bracket 6A, preferably there are more of these connection holes 17. Connecting holes 17 are located on the individual parts of the chassis frame 7, on the force sensor 14 and on the weight bracket profile 6A so that the connecting elements 16 can interconnect all these parts together. This arrangement of the weight bracket 6A for attaching the long arm 5 of the scissor lift 3 is formed on its lower side by a guide bar 18, which has locking elements 15 on the left and right sides. These locking elements 15 can be part of the profile of the guide bar 18 and formed by the shape of the profile or they can alternatively be formed by different types of stoppers, by which they can be additionally attached by means of screws or rivets, the stoppers can also be formed from other materials such as plastic or metal alloy. The advantage of this arrangement of attaching the weighing bracket 6A via the force sensor 14 to the bed chassis 7 is that the patient can be weighed on the bed surface 2 even if the bed surface 2 is in a different position. Advantageously, force sensors 14 are placed under each weighing bracket 6A or 6B, which enable the control unit 20 to weigh the patient who is placed on the bed surface 2 of the bed. From this representation in fig. 4, it is also clear that the weight bracket 6A with the guide bar 18 is fitted with a slider 19, which enables the movement of the long arm 5 of the scissor lift 3, and at the same time, this slider 19 is connected to the supporting long arm 5 by a pin. This slider 19 enables the movement of the long arm 5 along the guide bar 18 horizontally from one side to the other. With this movement, the position of the sleeping area 2 of the bed can be adjusted to the Trendelenburg position and the anti-Trendelenburg position. The weight bracket attachment 6A formed by the bar 18, into which the slider 19 is inserted, enables sliding horizontal movement along the guide bar 18 of the weight bracket 6A. At both ends of the guide rail 18 of the weight bracket 6A, locking elements 15 are placed, which have the task of ensuring that the glider 19 does not fall out of the guide rail 18 and allow only as much movement of the long arm 5 as is necessary for the desired position of the bed's bed surface 2.

In fig. 5 shows an axonometric view of the part of the chassis 7 with the weight bracket attachment 6A to the scissor lift 3 of the bed 1. It is clear from this illustration that the connecting holes 17 are both on the bed chassis 7 and on the upper side of the weight bracket 6A. It is also clear from this illustration that a force sensor 14 is placed between the chassis frame 7 and the weighing bracket 6A to enable the patient to be weighed on the bed surface 2. The picture shows the weight bracket 6A and the attachment of the slider 19 in the guide bar 18 of the weight bracket 6A, at one end of which there is a securing element 15, in this version formed by a screw as a stopper. This locking element 15 has the task of ensuring that the glider 19 does not come out of the guide rail 18 and thus the supporting long arm 5 of the scissor lift 3 of the bed does not fall out of the cantilever weight attachment 6A. This type of weight bracket attachment 6A is preferably placed horizontally opposite on both sides of the bed chassis 7 so that both long arms 5 of the scissor lift 3 move equally. The locking element 15 can alternatively be a plastic stopper, a rivet or a bent part of the profile, and it can also be made of different materials, such as plastic, rubber and metal.

The following illustration in fig. no. 6 is an axonometric view of the cross-section of the parts of the bed chassis 7, where part of the bed chassis frame 7 can be seen with the travel wheel 8 and the cantilever weight attachment 6A with the force sensor 14. In this cross-section, the force sensor 14 is visible, which is attached by means of fasteners 16, which they pass through the connecting holes 17. The force sensors 14 in this version are visibly connected to the weighing bracket 6A and to the chassis frame 7 through the force sensors 14 through the connecting elements 16 in the connecting holes 17. This method of attaching and storing the force sensors 14 makes it possible to correctly weigh the patient placed on the bed area 2 beds. The force sensors 14 in the cantilever weight storage 6A, as well as in the cantilever weight storage 6B, are connected to the control unit 20 of the bed 1. This connection can be made using cables that can pass through individual profiles of the bed frame, or it can be wireless. The control unit 20 is not shown in this embodiment.

The force sensors 14 are preferably four on the bed chassis 7 in a cantilever attachment under the weight brackets 6A or 6B and are connected to the control unit 20 as described. It is a so-called weighing module, which is a complete weighing system that amplifies the analog signal from the 14 force sensors (strain gauges), digitizes it, filters it and applies a conversion function that, based on the calibration data and the set geographical position, calculates the total weight carried by the sensors forces 14 (strain gauges). The calibration data also includes the weight of the structural units of the bed 1, which permanently load the force sensors 14 (strain gauges). The weight module thus provides weight related to the so-called factory zero, that is, the weight of the empty bed 1. It sends this weight via a digital interface to the control unit 20 (which is not shown in this picture) for further processing.

In the following fig. no. 7 is a side cross-sectional view of the part of the chassis 7 of the bed with the second weight bracket attachment 6B with the rotary movement of the long arm 5 of the scissor lift 3 of the bed. Weighing bracket 6B is made of a specially shaped metal profile. In this illustration, it is clear that the second type of weight bracket attachment 6B is attached by connecting elements 16 passing through force sensors 14 and connecting holes 17 in the profile of the weight bracket 6B. This type of weight bracket 6B enables the rotary movement of the long arm 5 of the scissor lift mechanism 3 of the bed, which secures the pin 13 of the long arm 5. This pin 13 also connects the long arm 5 to the weight bracket 6B. The weight bracket 6B is preferably attached in pairs against each other on the chassis 7 of the bed under the head part of the bed surface 2, but alternatively, this type of weight bracket 6B can be placed in pairs against each other on the chassis 7 of the bed under the foot part of the bed surface 2. Alternatively, these weight brackets can be brackets 6B with a simple rotary movement of the long arm 5 of the scissor lift 3 located and connected to all four long arms 5 of the scissor lift 3 under the chassis 7 of the bed. This is especially suitable for beds where you don't want to position the bed surface 2 in the Trendelenburg position and the anti-Trendelenburg position. Also visible in this illustration is the force sensor 14, which is attached by means of the connecting elements 16 that pass through the connecting holes 17. The force sensors 14 in this embodiment are visibly connected to the weight bracket 6B and to the chassis frame 7 by means of the connecting elements 16 in the connecting holes 17. This method of attachment and storage of the force sensors 14 makes it possible to correctly weigh the patient placed on the bed surface 2. The force sensors 14 in the cantilever weight storage 6B, as well as in the cantilever weight storage 6A, are connected to the control unit 20 of the bed 1. This connection can be made using cables that can pass through individual profiles of the bed frame, or it can be wireless. The control unit 20 is not shown in this embodiment.

In fig. 8 is an axonometric view of the part of the chassis 7 of the bed with the travel wheel 8 and the second type of weight bracket attachment 6B, which allows the long arm 5 of the scissor lift mechanism 3 to rotate only. In this illustration it is clear that the long arm 5 of the scissor lift mechanism 3 is connected to the second type of weight bracket 6B, where it can be seen that the metal profile of the bracket 6B has a connecting hole 17 on its lower side, through which the pin 13 passes into the profile of the long arms 5 of the scissor lift 3 so as to allow the long arm 5 to pivot around the axis of rotation of the pin 13. This movement allows the long arm 5 to lift from the lowest position to the raised highest position of the bed 1. The weight bracket 6B, which is formed by a specially shaped metal profile, can be formed from thick-walled sheet metal in various shapes, for example in the shape of the letters S, T, or it can be welded from several pieces of sheet metal into the respective advantageous shape, which is suitable for attaching the long arm 5 of the scissor lift 3 of the bed.

List of reference marks bed bed bed area scissor lift (bed lift mechanism) short arm (lift mechanism) long arm (lift mechanism)

6A cantilever attachment with horizontal sliding and rotating movement of the long arm

6B bracket attachment for the rotating movement of the long arm chassis frame wheel (wheel) pivot pin of attachment to the bed bed surface motor piston rod motor of the lifting mechanism articulated attachment of the short arm using a pin to the long arm pin of the long arm for attachment to the console force sensor (strain gauge) locking element for securing the glider connecting element - screw, rivet connecting hole guide bar of 6A console attachment glider of 6A console attachment control unit (not shown)

Claims (10)

CLAIMS FOR PROTECTION 1. Device for weighing a patient on a bed (1) consisting of a bed surface (2) and at least one motor (11) of a scissor lift (3), including a short arm (4) and a long arm (5) of a scissor lift (3) , connected to the chassis frame (7), characterized in that the long arm (5) of the scissor lift (3) is connected to the chassis frame (7) and to at least one weight bracket (6A), which consists of a specially shaped profile with a guide bar (18) enabling horizontal sliding and rotating movement of the long arm (5), or with at least one weight bracket (6B), which consists of a specially shaped profile with at least one connecting hole (17) with a pin (13) enabling the rotating movement of the long arms (5), while at least one type of weight bracket (6A) or weight bracket (6B) is connected to the chassis frame (7) by connecting elements (16) and at least one connecting element (16) passes through at least one connecting hole (17) of the sensor force (14), which connects at least one type of weight bracket (6A) or weight bracket (6B) to the chassis frame (7). 2. Device for weighing a patient on a bed (1) according to claim 1, characterized in that at least two long arms (5) facing each other are connected to the chassis frame (7) via force sensors (14) with at least one type of weighing brackets (6A) or weight brackets (6B). 3. A device for weighing a patient on a bed (1) according to claim 1, characterized in that at least one pair of long arms (5) of the scissor lift (3) is connected to the weighing console (6A) by means of a slider (19) enabling horizontal sliding movement along the guide rail (18) of the weight bracket (6A) from left to right and vice versa. 4. A device for weighing a patient on a bed (1) according to claim 1, characterized in that at least two long arms (5) facing each other are connected to the chassis frame (7) via force sensors (14) with a weighing bracket of the type (6B) ) enabling the rotary movement of the long arms (5). 5. Device for weighing a patient on a bed (1) according to claim 1, characterized in that at least one type of weighing console (6A) or weighing console (6B) is formed by a specially shaped profile, while at least one weighing console (6A) or weighing console the bracket (6B) is formed by a guide rail (18) and at each end of the weight bracket (6A) or the weight bracket (6B) is equipped with locking elements (15). 6. Device for weighing a patient on a bed (1) according to claim 1, characterized in that at least one type of weighing console (6A) or weighing console (6B) is formed by a specially shaped profile with at least one connecting hole (17 ) to attach the pivot pin (13) of the long arm (5). 7. Device for weighing a patient on a bed (1) according to claim 1, characterized in that the guide bar (18) is formed by a special profile of the weight bracket (6A), which is formed by securing elements (15) at both ends. 8. A device for weighing a patient on a bed (1) according to claim 1, characterized in that the weighing console (6B) is formed by a special profile with one connecting hole (17) enabling the rotary movement of the long arm (5) of the scissor lift (3). 9. A device for weighing a patient on a bed (1) according to claim 1, characterized in that the securing elements (15) of the guide bar (18) can be stoppers, screws, rivets or the like. 10. Device for weighing a patient on a bed (1) according to claim 1, characterized in that the weighing console (6A) moves the long arm (5) of the scissor lift (3), which tilts the bed surface (2) of the bed to Trendelenburg position and into the anti-Trendelenburg position.