Medical bed with auto regression mechanism

Abstract

A medical bed (100) comprising a backrest (10), a subframe (30), and an auto regression unit (20), wherein the auto regression unit (20) includes a curved track (11, 11a, 11b) attached to the backrest (10), and at least two pins (21a, 21b) with at least two mounted wheels (22a, 22b) attached to the subframe 5 (30), wherein the pins (21a, 21b) and wheels (22a, 22b) slide along the curved track (11, 11a,11b) to move the backrest (10) backwards (B) and upwards (U) during movement.

Description

[0001] MEDICAL BED WITH AUTO REGRESSION MECHANISM

[0002] TECHNICAL FIELD

[0003] The present invention relates to a medical bed with an auto regression mechanism to prevent patient migration and reduce pressure generated by the frame and mattress on the patient body during bed profiling.

[0004] BACKGROUND

[0005] During backrest profiling in simple medical beds the patient may slide down the bed. This is a negative effect, which require the caregivers to reposition patient many times during the hospital stay. This has a negative effect on caregivers efficiency and generate a risk of back or limbs injury during heavy patients repositioning. It also generates potential risks of harm to the patient’s health. What is more when backrest is articulating it can generate a pressure on the patient body, which can lead to bedsores and reduce the patient comfort.

[0006] In the light of the above, there is a need for a medical bed, which addresses and mitigates the risk for the patient to slide down when rising the backrest of the bed. There is further a need for a medical bed, which is designed to prevent patient migration and reduce pressure on the patient's body during bed profiling.

[0007] SUMMARY OF THE INVENTION

[0008] The present disclosure relates to medical beds. With the above description in mind, then, an aspect of some embodiments of the present invention is to provide a medical bed with an auto regression unit, which seeks to mitigate, alleviate or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination.

[0009] An aspect of the present invention relates to a medical bed comprising a backrest, a subframe and an auto regression unit. The auto regression unit includes a curved track attached to the backrest, and at least two pins with at least two mounted wheels attached to the subframe, wherein the pins and wheels slide along the curved track to move the backrest backwards and upwards during movement.

[0010] An advantage of an auto regression unit is that problems such as patient migration (i.e when a patient slides down in an unwanted movement) can be mitigated or at least minimized. An advantage of the curved track, the pins and the wheels is that it allows for an easy construction and assembly.

[0011] An aspect of the present invention is a medical bed wherein the curved track is configured to create more space for a patient during movement of the backrest.

[0012] An advantage of this is that it offers a more comfortable experience for both the caregiver and patient.

[0013] An aspect of the present invention is a medical bed wherein the curved track comprises a first part with a constant radius, and a second part with a decreasing radius towards the end of a movement of the backrest, allowing the backrest to turn faster towards the end of the movement to achieve a higher final backrest angle.

[0014] An advantage of having a curved track with a varying radius is that it allows the backrest to achieve a higher backrest angle in relation to its starting point. This is convenient for the patient as well as for the caregiver.

[0015] An aspect of the present invention is a medical bed comprising a steel plate configured to holding the at least two pins and wheels in place, wherein the at least two pins with mounted wheels are mounted on each side of the subframe, and wherein the at least two pins and wheels slide along the curved track to facilitate the backward and upward movement of the backrest.

[0016] An advantage of this is that it allows the caregiver to easily raise the upper end of a bed without having to use excessive force or a complicated handle. Another advantage is that the steel plate offers additional structural support.

[0017] The features of the above-mentioned embodiments can be combined in any combinations.

[0018] Some embodiments of the invention provide an auto regression mechanism of the backrest of the medical bed. It is an advantage with some embodiments of the invention that they may allow for preventing patient migration and reduce pressure on the patient body.

[0019] BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Further objects, features and advantages of the present invention will appear from the following detailed description of the invention, wherein embodiments of the invention will be described in more detail with reference to the accompanying drawings, in which:

[0021] FIG. 1 shows a medical bed according to one embodiment of the present disclosure.

[0022] FIG. 2 shows a sub frame according to one embodiment of the present disclosure.

[0023] FIG. 3 shows the backrest according to one embodiment of the present disclosure.

[0024] FIG. 4 shows the curved track according to one embodiment of the present disclosure. FIG. 5a shows the backrest in its lowest position.

[0025] FIG. 5b shows the backrest in its highest position.

[0026] DETAILED DESCRIPTION

[0027] Embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference signs refer to like elements throughout.

[0028] With reference to FIGs. 1 to 5b, an auto regression mechanism of a backrest 10 of a medical bed 100 is designed to prevent patient migration and reduce pressure on the patient's body during bed profiling. The auto regression mechanism of a backrest of a medical bed moves the back rest 10 backwards and upwards during articulation to create more space for patient to achieve more natural articulation.

[0029] The auto regression mechanism comprises an auto regression unit 20, shown in FIG. 2. The auto regression unit 20 comprises a curved track 11 (described further herein with reference to figures 3 and 4), at least 2 pins 21a, b and at least two wheels 22a, b. The medical bed 100 comprises at least two auto regression units 20, at least one on each side of the bed 100.

[0030] With reference to FIGs. 3 and 4, the curved track 11 comprises two parts 11a, 11b and is attached to the backrest 10. The backrest 10 as shown in figure 3 comprises two curved tracks 11, one on each side of the backrest 10. The term “each side” is to be interpreted as both the left and right side of a bed. With reference to FIG. 4, the curved track 11 is made in a specific curve like shape, starting in a constant radius part 11a and has a decreasing radius part towards the end 11b of the curved track, making the backrest turn faster towards the end of the movement to achieve a higher final backrest angle.

[0031] With reference to FIG. 5a and 5b, during backrest movement, the four pins, two pins 21a, b on each side of the sub frame 30, with wheels 22a, b are sliding along the curved track 11, 11a, 11b forcing the backrest 10 backwards B and upwards U in a backwards curved motion M. FIG. 5a shows the backrest 10 in its lowest position. FIG. 5b shows the backrest in its highest position. It should be noted that it is the curved track 11 that is moving when the backrest is raised. The pins 21 a, b and the wheels 22a, b are firmly attached to the sub frame 30 and do not move, as is clearly illustrated in figures 5a and 5b.

[0032] The backrest of the bed has a curved track 11 made up of two parts 11a, 11b. The first part 11a has a constant radius, and the second part 11b has a decreasing radius towards the end of a movement. This design allows the backrest to turn faster towards the end of its movement, achieving a higher final backrest angle.

[0033] The sub frame 30, which supports the mattress, has at least two pins 21a, 21 b with mounted wheels 22a, 22b on each side of the sub frame 30. These pins 21a, 21b and wheels 22a, 22b are held in place by a steel plate 23.

[0034] During backrest articulation or movement, the pins 21a, 21b and wheels 22a, 22b slide along the curved track 11. With reference to FIGs 5a, b, this sliding motion forces the backrest 10 to move backwards, arrow B, and upwards, arrow II, in a curved motion, showed by arrow M. This backward and upward movement creates more space for the patient, allowing for more natural articulation and reducing the risk of bedsores.

[0035] By preventing the patient from sliding down the bed and reducing pressure on the body, the mechanism of the auto regression unit 20 improves patient comfort and safety. It also reduces the need for caregivers to frequently reposition the patient, enhancing caregiver efficiency and reducing the risk of injury during patient handling.

[0036] The auto regression mechanism ensures that the backrest moves in a way that minimizes patient migration and pressure, leading to better overall patient care and comfort.

[0037] This solution should help reduced patient migration and reduce pressure on the body because it creates more space for body articulation in the back and hips area and should compensate the offset between frame hinge and patient hips rotation point.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" "comprising," "includes" and / or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0039] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0040] The foregoing has described the principles, preferred embodiments and modes of operation of the present invention. However, the invention should be regarded as illustrative rather than restrictive, and not as being limited to the particular embodiments discussed above. The different features of the various embodiments of the invention can be combined in other combinations than those explicitly described. It should therefore be appreciated that variations may be made in those embodiments by those skilled in the art without departing from the scope of the present invention as defined by the following claims. Reference numbers

[0041] 100 Medical bed

[0042] 10 backrest

[0043] 11 Curved track

[0044] 11a Constant radius part of curved track 11b Decreasing radius part of curved track 20 Auto regression unit

[0045] 21a, b pins

[0046] 22a, b wheels

[0047] 23 Steel plate

[0048] 30 Sub frame

[0049] B Backwards direction

[0050] U Upwards direction

[0051] M Curved motion

[0052]

Claims

CLAIMS1. A medical bed (100) comprising:a backrest (10),a subframe (30), andan auto regression unit (20),wherein the auto regression unit (20) includes a curved track (11, 11a, 11 b) attached to the backrest (10), and at least two pins (21 a, 21 b) with at least two mounted wheels (22a, 22b) attached to the subframe (30), wherein the pins (21a, 21b) and wheels (22a, 22b) slide along the curved track (11, 11 a, 11 b) to move the backrest (10) backwards (B) and upwards (U) during movement.

2. The medical (100) bed of claim 1, wherein the curved track (11, 11a, 11 b) is configured to create more space for a patient during movement (M) of the backrest (10).

3. The medical bed (100) of claim 1, wherein the curved track (11) comprises:a first part (11a) with a constant radius, anda second part (11b) with a decreasing radius towards the end of a movement of the backrest (10), causing the backrest (10) to turn faster towards the end of the movement to achieve a higher final backrest angle.

4. The medical (100) bed of claim 1, comprising a steel plate (23) configured to holding the at least two pins (21a, 21b) and wheels (22a, 22b) in place,wherein the at least two pins (21 a, 21 b) with mounted wheels (22a, 22b) are mounted on each side of the subframe (30), andwherein the at least two pins (21a, 21b) and wheels (22a, 22b) slide along the curved track (11) to facilitate the backward (B) and upward (U) movement of the backrest (10).

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