RU2500378C2 - Safety bed hand-rail - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to a safety bed (1) hand-rail (2), particularly for a hospital bed. The above hand-tail is attached to a longitudinal side (1a) of the bed and comprises two distanced terminal supports (3, 4) between which there is at least one bar section substantially in the longitudinal direction. The supports (3, 4) are rotatable in a junction with the bed so that they can rotate from a position inclined to the longitudinal direction of the bed to a vertical position, when the safety hand-rail (2) is lifted from a lower position (B) to an upper position (C), and thereby rotate in an opposite direction when the safety hand-rail is dropped from the upper position into the lower position. So the hand-rail section (5; 51, 52, 53, 54) regardless of the rotary motion keeps its substantially horizontal direction. According to the invention the safety hand-rail (2) additionally comprises a gas strut (6) movable between the section (5; 51) and terminal support (3).

EFFECT: invention provides higher patient and personnel safety.

2 dwg

Description

FIELD OF THE INVENTION

The invention relates to a safety handrail for a bed, described in the restrictive part of claim 1 of the formula, i.e. designed primarily for a hospital bed.

State of the art

From the published patent application EP 1552772 A1, a side rail for a hospital bed is known, comprising two support legs, between which there is a horizontal bar. The lower end of one of the racks is equipped with a separate rotary valve, through which the side rail is attached at one end to the side of the bed. The specified valve allows in the lower position of the structure to prevent deviation of the side rail for the front or rear of the bed. Support racks are mounted on the sides of the bed with the possibility of rotation relative to its longitudinal direction, and the crossbar is attached to the support racks so that you can raise the side rail to the upper position, preventing the patient from falling off the bed, and, accordingly, lower the specified rail to the lower position, allowing put the patient to bed. In addition, the side grab bar has locking means mounted on the lower end of one of the support posts and paired with the bed mount. The specified tool contains a locking pin, made with the possibility of inserting it into the counter locking hole in the plate, such as a support stand, on the side of the bed and, at the same time, close the safety handrail in place, preventing the handrail from turning in the raised position. The locking means also has a biasing means, such as a spring, which is operatively connected to the locking pin to push it into the locking hole. In this case, the locking means is configured to perform a stopper function with respect to the rotational movement of the support post and the side rail.

For the side rail of the hospital bed described above, the mechanical construction of its blocking means poses a particular problem. For example, one of the drawbacks is the inability to securely fix such a handrail in the interval between the raised and lowered positions. The procedure for raising the side rail is problematic, requiring effort. Another problem is the possibility of unexpected collapse of the side rail from the raised position to the lowered position.

Disclosure of invention

The problem to which the invention is directed, is to eliminate problems associated, in particular, with the hospital bed described above, as well as to develop a new, improved safety handrail for the bed, which allows, for example, to increase the safety of both a lying patient and caring staff .

The safety handrail for the bed according to the invention is characterized by the features of claim 1 of the formula. The dependent claims present preferred embodiments of the invention.

The invention relates to a bed and, in particular, to a safety handrail for a hospital bed attached to at least one of its longitudinal sides. The specified handrail contains two end supports located at a distance from one another, and at least one section located between the end supports, essentially in the longitudinal direction of the bed. These supports are installed with the ability to deploy, remaining connected with the bed, i.e. can be rotated from a position inclined relative to the longitudinal direction of the bed, in a vertical position when the safety handrail is raised from a lower position to an upper one. A corresponding rotation in the opposite direction is also possible, when the safety rail is lowered from the upper position to the lower one, and the section of the rail is made with the possibility of maintaining its essentially horizontal orientation during rotation. According to the invention, the safety rail further comprises a gas spring interposed between said section and the end support.

In a preferred embodiment of the invention, the gas spring at its first end is attached to the section of the handrail (most preferably to the first, i.e. to the lowest) at a distance from the first end support, and at its second end to the end support at a second distance from the attachment points of the section (most preferably the first section).

In a preferred embodiment of the invention, the gas spring comprises locking means for fixing it in the off position in which its piston is pulled out of the cylinder. The safety rail is in the up position. The advantage of this design is that there is no need for any separate locking device to hold the safety rail in the upper position.

In a most preferred embodiment of the invention, the first end support has first and second portions located at an angle to each other. One or more sections of the handrail at its first ends are rotatably attached to the first section of the first end support, the first end support at its second section is rotatably attached to a bed frame or other similar structure, and the gas spring at its first end is attached to the first ( the lowest) section of the handrail, and at its second end, next to the joint between the first and second sections of the first end support, preferably to its second section.

In a preferred embodiment, the angle between the first and second portions of the end support lies in the range of 45 ° -135 °, but the angle of 90 ° is most preferred.

In a preferred embodiment of the invention, the second portion of the first end support is angled to a vertical plane passing through the safety handle, said angle being preferably 20 ° -45 °, most preferably about 30 °.

The advantage provided by the proposed safety handrail for the bed according to the invention, lies in the simplicity of design and ease of manufacture. Another advantage of the invention is its good performance, reliability and safety. Another advantage provided by the proposed safety handrail for the bed is the possibility of maintenance-free operation.

Brief Description of the Drawings

Further, the invention and its remaining advantages will be described in more detail with reference to the accompanying drawings, of which

figure 1 in side view illustrates the safety handrail for the bed according to the invention, installed in the upper position,

2 is a side view illustrating a safety rail for a bed according to the invention mounted in a lower position, and

figure 3 in a bottom view illustrates the safety rail according to the invention, installed in the upper position.

In the drawings, the same numerals are used for identical elements.

The implementation of the invention

The accompanying drawings show one of the preferred embodiments of the safety rail 2 for the bed. The specified handrail is oriented in the longitudinal direction AA of the bed 1 along at least one side thereof. However, it is most preferable to place such handrails along both long sides of the bed. The purpose of the safety handrail is to prevent a sick person or elderly patient from falling out of bed.

The proposed safety handrail is mainly designed for a hospital bed or any other bed used by the patient, however, it is possible to attach this handrail to other types of beds, such as beds used at home or in nursing homes, where it is considered necessary to equip the beds in this way .

The safety handrail 2 is made with the possibility of lifting from the lower position B to the upper position C and the corresponding lowering. In the lower position B, the handrail 2 is flush with the bed frame or at least with the top surface of the bed provided with a mattress (i.e. at the level of the top surface of the mattress). Accordingly, in the upper position C, the handrail is clearly above the plane of the bed, for example, 40 cm above the upper surface of the mattress.

The safety handrail 2 has two end supports, namely, the first support 3 and the second support 4, which are located at a distance from one another and are attached to the longitudinal side 1a of the bed 1, more preferably at the opposite ends of the bed. In addition, the handrail 2 between the supports 3, 4 has at least one section 5 (but most preferably several sections 51, 52, 53, 54), passing (passing) preferably along the bed.

The end supports 3, 4 are in the form of elongated rods or other similar configuration. They are made, for example, from a pipe of circular or square cross-section, and in the most preferred embodiment, this pipe is metal. Each of the supports 3, 4 with its first end 30, 40 is rotatably mounted using a suitable swivel or hinge in articulation with the bed, most preferably directly on the bed frame. As a result, these supports can be rotated relative to the longitudinal direction AA of the bed 1, and the attachment points 3a, 4a serve as fixed axes. Thus, the end supports 3, 4 are rotatable from an inclined position to a vertical position and from a vertical position to an inclined one when the safety rail 2 is raised from the lower position B to the upper position C and, accordingly, lowered from the upper position to the lower one.

When changing the configuration of the safety handrail, when moving from the lower position B to the upper position C and back, the end supports 3, 4 are rotated, however, in the most preferred embodiment of section 5; 51, 52, 53, 54 of the handrail are made so that they retain their essentially horizontal orientation regardless of the rotation of the end supports and the raising / lowering of the handrail.

The handrail sections 5 are mounted, for example, with suitable protruding fingers, with the possibility of rotation on the first and second end supports 3, 4 at the attachment points 5c, 5d located at the opposite ends 5a, 5b of these sections. These sections are attached to each end support at a distance from one another. The attachment and rotation points 5c, 5d at the opposite ends 5a, 5b of the sections 5 are placed along parallel inclined straight lines EE, FF, so that each point 5c, 5d has the same turning radius relative to the attachment point of the corresponding end support 3, 4. Thus, the handrail sections 5 are configured to follow the end supports 3, 4 while maintaining a substantially horizontal orientation when the supports are rotated from an inclined position to a vertical and a reverse direction, i.e. while changing the configuration of the safety handrail when moving from the lower position B to the upper position C and vice versa.

Section 5; 51, 52, 53, 54 are elongated elements, such as long tubes or rods, most preferably having a round (or square) cross section and made of metal.

According to the invention, the safety rail 2 is additionally equipped with a gas spring 6 placed between the rail section 5, 51 and the end support 3. The spring 6 at its first end 6a is attached to section 5, 51 (in this case, the first, i.e. the lowest section 51) at a distance from the first end support 3, and at its second end 6b, to the end support 3 at a second distance from the attachment point of section 5, 51.

When changing the configuration of the safety handrail 2, when moving from the lower position B to the upper position C and back, the end supports 3, 4 are rotated, and sections 5; 51, 52, 53, 54, the handrails move in the horizontal and vertical directions, preserving, nevertheless, regardless of the rotational movement, their essentially horizontal orientation. As a result, the length of the gas spring 6 changes, increasing when the safety handrail is raised from the lower position B to the upper position C, and, accordingly, contracting when lowering it from the upper position C to the lower. During compression, the gas spring 6 simultaneously exerts an impact in the form of braking and resistance on the rotational movement of the end supports 3, 4. It should be noted that when the safety handrail is stopped between the lower position B and the upper position C, while simultaneously stopping the pivoting movement of the end supports 3, 4, the gas spring 6 keeps said handrail stationary and prevents it from collapsing down to the lower position B. In addition, it must be borne in mind that the gas spring 6 reduces the effect required to raise the handrail from the lower position B to the upper position C, i.e. in this case, in comparison with the side handrails known from the prior art, proportionally less force is required.

In a preferred embodiment of the invention, the gas spring 6 is equipped with a locking means 61, which allows to lock it in the off position, in which its piston is removed from the cylinder. In this position, the gas spring 6 generally preferably has the longest possible length. When it is locked in the off position, the safety rail 2 is also locked in the upper position C (see figure 1). The closing means 61 is made in the form of a liner equipped with a spring, which, when the length of the gas spring reaches a predetermined value, bounces up to the closing position, thereby mechanically blocking the return of the spring to a shortened length. Means 61 is configured to return, i.e. by squeezing the liner in the opposite direction, the gas spring 6 is compressed to a short length, and, at the same time, the handrail 2 is turned down to the lower position B (see figure 2). The gas spring 6 is a commercially available assembly, such as, for example, a gas spring supplied by Stabilus GmbH under the trademark LIFT-O-MAT.

In a preferred embodiment of the invention, the first end support 3 consists of two sections, namely the first and second sections 31, 32. These sections 31, 32 are located relative to each other at an angle α and are connected in a fixed and rigid manner. For example, the first end support 3 can be constructed from a single curved metal tube with a circular cross-section. Section 5; 51, 52, 53, 54, the handrails are rotatably connected by their first ends 5a to a portion 31 of the first end support 3. At least this portion is a substantially straight element. With its second section 32, the first end support 3 is rotatably connected by means of a protruding finger or other similar element to the frame or other similar part of the bed 1. The preferred angle α between the first and second sections 31, 32 of the end support is approximately 90 °, but it can be reduced or increased in comparison with this value, for example, within the interval of 45 ° -135 °. The gas spring 6 at its first end 6a is attached to the first (lowest) section of the handrail 5, 51, and at its second end 6b it is attached next to the joint between the first and second sections 31, 32 of the first end support 3, preferably to the second section 32 of the end supports 3.

In the most desirable embodiment, the end supports 3/31, 4 and sections 5 of the safety rail 2 essentially form a multi-level structure in both the upper and lower positions. In such an embodiment, the handrail 2 is substantially in the vertical plane D-D (see FIG. 3) extending along the side of the bed in its longitudinal direction AA. The vertical plane D-D is essentially perpendicular to the plane on which they lie in the bed. Preferably, the first and second sections 31, 32 of the end support 3 are located at an angle α to each other in the plane of the handrail 2, i.e. in the vertical plane D-D.

In one of the preferred embodiments of the invention, the first end support 3, at least in its main (in length) part, such as the first section 31, is located at an acute angle relative to the vertical direction PP, and in the most preferred embodiment, parallel to the straight line E -E, which is formed by attachment and rotation points 5c located at the ends 5a of the handrail sections 5. Among the advantages of this design, it should be noted that in this case, the safety handrail does not interfere with access to the gear controller raising the bed and placed near the end of the bed, as well as to other bed accessories, as in the lower position At the end of the first end support 3 is at a relatively high level, close to the plane of the bed.

In a preferred embodiment, the second portion 32 of the first end support 3 lies relative to the vertical plane D-D of the safety rail 2 at an angle β, as specifically shown in FIG. 3. The angle β lies in the range 15 ° -45 °, preferably being about 25 °. As a result, the handrail 2 can be placed at a small distance, for example 3-5 cm, from the bed frame 1 with the attachment point 3a, such as a protruding finger, while still retaining the articulation with the bed frame. The second end support 4 is attached at its first end 40 to a long rectilinear axis of rotation at the attachment point 4a at an appropriate distance from the bed frame 1 or from another similar structure. The specified axis is oriented perpendicular to the vertical plane D-D. The gas spring 6, as already indicated, is attached at its first end 6a to the first (lowest) handrail section 5, 51, and at its second end 6b, next to the joint between the first and second sections 31, 32 of the first end support 3, preferably to the second section 32 of this support, in particular below the sections 5 of the handrail. In this embodiment, the gas spring 6, in addition, is made and attached so that it is essentially in the vertical plane D-D below the end supports 3, 4 and sections of the handrail.

It should be noted that due to the presence of the angle α between the portions 31, 32 of the end support, and also due to the appropriate specified length of the second portion 32 of the end support, it is possible to control the passage of sections 5; 51, 52, 53, 54 of the handrail through the attachment point 3a, most preferably without contact with it, when the handrail 2 is rotated from the upper position C to the lower position B or in the opposite direction. Thus, the safety handrail 2 forms a multi-level structure in which not a single part of it protrudes from the bed outward (i.e., the safety handrail is also safe for medical personnel).

The invention is not limited only by the above example, i.e. numerous changes are possible without going beyond the boundaries of the concept of the invention defined in the claims.

Claims (9)

1. Safety handrail (2) for a bed, especially for a hospital bed (1), which is attached to at least one of its longitudinal sides (1a) and contains two end supports (3, 4) located at a distance of one from another, and at least one section (5; 51, 52, 53, 54), located between the end supports (3, 4), essentially in the longitudinal direction (AA) of the bed, and the end supports ( 3, 4) are installed with the ability to deploy, while remaining connected with the bed, for rotation from a position inclined relative to the longitudinal direction the bed to the vertical position when lifting the safety handrail (2) from the lower position (B) to the upper position (C) and, accordingly, to turn in the opposite direction when lowering the safety handrail from the upper position to the lower position, this section (5 ; 51, 52, 53, 54) the handrail is configured to maintain its essentially horizontal orientation during rotation, characterized in that the safety handrail (2) further comprises a gas spring (6) placed between said tion (5; 51) and end support (3). 2. A handrail according to claim 1, characterized in that the gas spring (6) is attached at its first end (6a) to the handrail section (5) at a distance from the first end support (3), and at its second end (6b) - to the specified end support (3) at a second distance from the attachment point of the specified section. 3. A handrail according to claim 1 or 2, characterized in that the gas spring (6) is attached at its first end (6a) to the first, i.e. the lowermost section (5; 51) of the handrail, and at its second end (6b) - to the specified end support (3) at a second distance from the attachment point of the first section (5; 51). 4. The handrail according to claim 1 or 2, characterized in that the gas spring (6) contains locking means (61), which allows you to lock it in the off position, in which its piston is removed from the cylinder, and at the same time, lock the safety handrail (2) in the upper position (C). 5. The handrail according to claim 1, characterized in that the first end support (3) has first and second sections (31, 32) located at an angle (α) to each other, with one or more sections (5; 51, 52 , 53, 54) are rotatably attached at their first ends (5a) to the first section (31) of the first end support (3), the first end support (3) is rotatably attached at their second section (32) to the bed frame ( 1) or to another similar design, and a gas spring (6) is attached at its first end (6a) to the first, lowest section (5; 51), and at its second end (6b) - next to the junction between the first and second sections (31, 32) of the first end support (3), preferably to its second section (32). 6. The handrail according to claim 5, characterized in that the angle (α) between the first and second sections (31, 32) of the end support lies in the range of 45 ° -135 °. 7. The handrail according to claim 6, characterized in that the angle (α) between the first and second sections (31, 32) of the end support is 90 °. 8. A handrail according to any one of claims 5 to 7, characterized in that the second section (32) of the first end support (3) is located at an angle (β) to the vertical plane (D-D) of the safety handrail (2). 9. A handrail according to claim 8, characterized in that the angle (β) that forms the second portion (32) of the end support relative to the vertical plane (DD) of the safety handrail (2) lies in the range of 20 ° -45 °, preferably about 30 °.

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