Mechanized bed with a trapeze bar for patient transfer

Abstract

The invention relates to an electric medical bed comprising: - a base (1) - a support (6) - a trapeze arm (10) - a flexible strap (11) mounted to slide at least at the free end of the trapeze arm (10) and having a first end attached to the support (6) and a second end intended to be attached to a harness (12a). According to the invention, the trapeze arm is self-supporting by means of a supporting structure (331) attached to which the trapeze arm (10) extends and comprising anti-tipping means for the supporting structure (331), the anti-tipping means providing at least one support on the ground at least at the level of the vertical axis of the free end of the trapeze arm (10). Figure for the abstract: Fig. 1

Description

Title of the invention: Mechanized bed with a trapeze bar for patient movement technical field

[0001] The present invention relates to a medical bed intended for patients with hypotonia, to varying degrees.

[0002] An advantageous application of the present invention lies in assisting healthcare personnel to perform various treatments requiring appropriate patient positions. Previous art

[0003] In the healthcare field, and more specifically in hospitals, nursing staff must regularly provide care to patients, several times a day. This care involves handling the patient in various positions, as the patient may be quite heavy.

[0004] Hospital healthcare staff are thus subjected to significant physical constraints, which can impact their own physical health as well as the general quality of care administered to all patients.

[0005] It is known from the prior art that several medical beds exist which make it possible to reduce the physical burden on nursing staff.

[0006] Thus, the prior art proposes to vary the sleeping height of a medical bed in a low position for safety for sleeping, and a high position for care or grooming procedures depending on the height of the members of the care staff.

[0007] He also knew of the prior art a medical bed equipped with controls allowing the patient to adjust himself in his bed to various positions of comfort for better recovery, namely in a sitting or semi-sitting position, with legs raised or not, or with his torso raised for better breathing.

[0008] Another prior art solution is a bed equipped with a patient raising aid, in case the patient has slipped at the foot of the bed. This bed allows the sleeping surface to be inclined by equipping the bed with a motor for tilting (legs upwards) and another motor for tilting (legs downwards), which may be necessary for feeding the patient in the event of a spinal fracture.

[0009] Furthermore, the prior art also proposes placing the sleeping surface in a vertical position, with the patient's feet resting on the bed panel and the patient secured by strapping. It has also been proposed to provide a lateral tilting mechanism for the sleeping surface, in order to provide certain types of care. to the patient.

[0010] The prior art therefore discloses several improved medical beds designed to alleviate the physical burden on nursing staff. However, each medical bed in the prior art incorporates only one improvement aimed at solving a very specific problem; and no medical bed in the prior art includes all the aforementioned improvements within a single medical bed without resulting in a bed that is too bulky and / or large, and without resulting in a medical bed whose price would be excessive.

[0011] Finally, documents FR3038223 and FR3038224 describe mechanized beds equipped with a trapeze bar allowing the patient to be moved into various positions. Even though the mechanized beds described in these documents are satisfactory, it is always possible to further improve the stability and strength of the trapeze bar for better safety of the patient and caregivers, while avoiding damage to the mechanized bed as a whole. Description of the invention

[0012] One of the aims of the invention is therefore to remedy the problems of the prior art by proposing a mechanized medical bed including all the aforementioned improvements in the prior art, thus enabling the nursing staff to perform a plurality of care and manipulation of the patient, regardless of his weight, drastically reducing the physical load of the nursing staff, while improving the stability of the trapeze bar and the medical bed in general.

[0013] To this end, an electric medical bed has been developed comprising: - a base - a support - a gallows - a flexible link mounted sliding at least at the free end of the gallows and having a first end attached to the support and a second end intended to be attached to a harness.

[0014] According to the invention, the gantry is self-supporting by means of an added supporting structure from which the gantry extends and comprising anti-tipping means for the supporting structure, the anti-tipping means providing at least one support on the ground at least at the level of the vertical line of the free end of the gantry.

[0015] In this way, the present invention allows for greater resistance to the patient's weight as well as improved stability for the various treatments administered to the patient. The flexible link, mounted to slide with the hoist by means of a pulley system, allows the patient to be lifted from the support and stabilized at a certain height while the treatments are administered by the caregivers, without risk of breaking the hoist or of risk of tipping the gantry, the anti-tipping means placed at the level of the vertical line of the free end of the gantry allowing to support the weight of the patient.

[0016] The harness is in the form of an element allowing the patient to be lifted safely, by means of straps or ties provided for this purpose.

[0017] Preferably, the anti-tipping means comprise two legs providing support on the ground on either side of a plane in which the hoist extends, in order to distribute the support areas in a balanced way to compensate for the forces exerted on the hoist when a patient is lifted.

[0018] According to a particular embodiment, the anti-tipping means comprise outriggers, said outriggers being articulated relative to the supporting structure by means of pivot joints, to move from a neutral position folded along the support arm to a stabilizing position resting on the ground. These outriggers thus provide greater stability.

[0019] According to a preferred embodiment, the supporting structure includes means for engaging with a cross member of the bed base. Thus, the weight of the base acts as a counterweight when the support arm is subjected to extreme loads, while also having the advantage of precisely positioning the supporting structure relative to the bed.

[0020] Advantageously, the engagement means are in the form of jaws that clamp the cross member.

[0021] According to a particular embodiment, the supporting structure is provided with casters, allowing it to be moved easily.

[0022] In practice, the various maneuvers of the medical bed according to the invention are performed by a limited number of electric actuators and simple mechanisms, so that the price of such a bed remains moderate. Some of the functions made accessible by the bed's mechanisms cannot be implemented simultaneously, and the selection of the mechanisms to be implemented for a given function is ensured by acting on the power supplies of the actuators, an appropriate program being interposed between said power supplies and control buttons that the user can operate. Brief description of the drawings

[0023] [Fig. 1] is a perspective view of a gallows implemented in the invention.

[0024] [Fig.2] is a detailed view similar to [Fig.1].

[0025] [Fig.3] is a view similar to [Fig.2], in which the gallows has been removed.

[0026] [Fig.4] is a perspective view of the rear of the gallows.

[0027] [Fig.5] is a top view of a base and a support according to the invention

[0028] [Fig.6] is a bottom view of a base and a support according to the invention

[0029] [Fig.7] is a perspective view of the base and support.

[0030] [Fig.8] is a view similar to [Fig.7], seen from below.

[0031] [Fig.9] is a side view of the base and support, along the VV axis of [Fig.5].

[0032] [Fig. 10] is a side view of the base and support, along axis VI-VI of the [Fig. 5]

[0033] [Fig. 11] is a side view of a medical bed according to the invention, equipped with a reinforced stability arm, the support being in the lower position.

[0034] [Fig. 12] is a view similar to [Fig. 11], with the support in the high position.

[0035] [Fig. 13] is a side view of a support and a base, along the longitudinal axis of the support.

[0036] [Fig. 14] is a side view of a support according to the invention, along the longitudinal axis of the support, where the support is in the "chair position".

[0037] [Fig. 15] is a perspective view of the underside of the support.

[0038] [Fig. 16] is a longitudinal sectional view of the support along axis XIII-XIII of the [Fig.6].

[0039] [Fig. 17] is a view similar to [Fig. 16], where the support is in the initial "chair-positioning" position.

[0040] [Fig. 18] is a detailed view of part L of [Fig. 14].

[0041] [Fig. 19] is a view similar to [Fig. 17], where the support is the final position of the "betting" in a wheelchair.

[0042] [Fig.20] is a detailed view of [Fig.13], illustrating the initiation of the mechanism of verticalization.

[0043] [Fig.21] is a view similar to [Fig.20], illustrating an intermediate stage of the verticalization mechanism.

[0044] [Fig.22] is a view similar to [Fig.20], illustrating the end of the vertical mechanism lisation. Detailed description of the invention

[0045] With reference to Figures 1 to 4, an electric medical bed is described comprising: - a base (1) - a support (6) - a gallows (10) - a flexible link (11) mounted sliding at least at the free end of the gallows (10) and having a first end attached to the support (6) and a second end intended to be attached to a harness (12a).

[0046] The assembly (33) comprises a supporting structure (331) from which the gantry (10) extends and comprising anti-tipping means for the supporting structure (331), the anti-tipping means providing at least one support on the ground at least at the level of the vertical line of the free end of the gantry (10).

[0047] The anti-tipping means comprise two legs (337) providing supports on the ground on either side of a plane in which the jib (10) extends. The length of these legs (337) is determined based on the free end of the jib. Casters for moving the supporting structure are located at the ends of these legs (337).

[0048] The anti-tipping means also include outriggers (333), said outriggers (333) being articulated relative to the supporting structure (331) by means of pivot joints, to move from a neutral position folded along the support arm (10) to a stabilizing position resting on the ground. These outriggers (333) are also removable from the supporting structure (331) by unlocking.

[0049] The supporting structure (331) includes means for engaging a cross member of the base (1) in the form of jaws (332) that clamp the cross member. These jaws also have fins to facilitate the engagement of the cross member of the base (1).

[0050] More specifically, with reference to Figures 1 to 4, the arm (10) is attached to the supporting structure (331) by means of a stiffening tube (334) onto which the arm (10) is fitted. The supporting structure also has a tubular structure (335) for receiving the stiffening tube (334) and / or the arm (10).

[0051] The supporting structure is also provided with anti-slip elements (336) arranged at the free ends of the supports (333)

[0052] With reference to Figures 5 to 16, the bed according to the invention is a medical bed intended for use by a patient likely to receive care from healthcare personnel. This medical bed comprises a base (1) equipped with means (2) for rolling on the floor, the base being quadrangular in shape and consisting of two side rails (41) parallel to the longitudinal axis of the bed and two crossbars (42) perpendicular to the side rails. The bed includes a headboard (31) and a footboard (32), which define its transverse boundaries. The two side rails (41) have slides (43) in the head section of the bed. This rectangular structure is equipped with four casters (2), which allow the base (1) to be easily moved relative to the floor supporting the bed.

[0053] The base supports all the bed elements located above it by means of two frames (13), (14), each of which can pivot relative to the base (1) around an axis perpendicular to the longitudinal axis of the bed. These frames (13), (14) are substantially flat, and their orientation relative to the base is achieved by two jacks (8), (9) arranged end-to-end. The body of one jack is fixed to one of the frames (13), (14), and its rod is fixed to the other frame. Actuating the two jacks (8), (9) allows the height and orientation of the support (6) relative to the ground to be varied by adjusting the level, relative to the ground, of a support (6) that receives three elements (3), (4), (5) intended to constitute the bed elements. patient support elements are placed in the bed. These support elements (3), (4), and (5) are fitted with bedding (not shown in the drawing); they provide a support layer for the patient's torso (element (3)), seat (element (4)), and legs (element (5)). The free ends of the frame (13) are axes that slide in the guides (43) of the base (1); the free ends of the frame (14) carry a pivot (16) fixed relative to the base (1). The action of the jacks (8) and (9) allows not only for adjusting the distance of the support (6) from the floor, but also for inclining the longitudinal axis of the support (6) relative to the floor.

[0054] The bed according to the invention also provides an additional function to reduce the physical strain on caregivers by utilizing the force generated by the cylinders (8) and (9). The bed according to the invention comprises a trapeze bar (10) associated with a supporting structure (331), said trapeze bar carrying a flexible strap (11) that can slide relative to the trapeze bar. One end of the strap (11) is attached to the support (6) by a tab (49) of said support, on which the patient's support elements are located. The other end of the strap (11) can be attached (15) to a harness (12a) that is placed between the patient and their support elements (3), (4), (5) without requiring excessive effort from the caregivers, provided that the support (6) has been previously raised to the highest position.The staff lifts the patient, supported by their harness (12a), by simply lowering the support (6) towards the floor (20) using the jacks (8) and (9) associated with the support (6). The nursing staff can then move the patient so that they are no longer directly above their bed by relative movement of the hoist (10) with respect to the support (6). The connection between the hoist (10) and the supporting structure (331) is a rotating connection made within a stiffening tube (334).

[0055] The support (6) constitutes a primary frame (15) as a whole; this primary frame (15) being defined by two longitudinal members (6a) and (6b) substantially parallel to the longitudinal axis of the bed and by two transverse edges (6c), (6d) which each carry the end of a longitudinal beam (17). The longitudinal beam (17) has, at each of its ends, a pivot (17a), (17b), the axis of said beam being defined by its two pivots; the pivots (17a), (17b) are each fixed to the transverse edges (6c) and (6d) by means of a bearing.

[0056] The longitudinal beam (17) is part of a rectangular secondary frame (18) arranged between the edges and stringers of the primary frame (15); the secondary frame (18) can thus pivot relative to the primary frame (15) around the axis of the longitudinal beam (17).

[0057] The secondary frame (18) carries two half-pivots (19), which define an axis perpendicular to the longitudinal axis of the bed. The primary frame (15) can pivot about The axis defined by the two half-pivots (19) and, in this case, the secondary frame (18) forms a flat sub-assembly with the primary frame (15) to bring the patient into a substantially vertical position. A verticalization cylinder (20) is used, one end of which is connected to the longitudinal beam (17) and the other end to the primary frame (15). When the verticalization cylinder (20) is powered, it exerts its thrust between the longitudinal beam (17) and a point connected to the primary frame (15). In this way, the flat sub-assembly (15) / (18) is in a position forming an angle between 75° and 85° with respect to the running surface of the base (1).

[0058] With reference to Figures 16 to 19, the bed according to the invention also provides the necessary connections for transferring a patient initially lying flat to a chair. As already indicated, the support (6) comprises three substantially flat elements intended to constitute respectively a backrest (3) for torso support and two supports (4) and (5) respectively for the seat and legs of the patient (12). The three elements (3), (4) and (5) are connected to each other by joints consisting of connecting rods (23). The relative positions of the three elements can be modified by a torso jack (24), the first end of which is connected to the backrest (3) and the second to a point on the primary frame (15). The second end of the jack (24) is also connected to a connecting rod (23) pivotally supported by the backrest (3); the connecting rod (23) acts on the backrest (3) so that one of its points is forced to slide in a slide (25) linked to the support (6).The connecting rod (23) is further articulated for rotation with an arm (26), which acts on an oblong recessed connecting rod (27) pivoting at a point (28) relative to the primary frame (15) to impart a lifting movement to the seat 4 relative to the primary frame (15). The arm (26), at its end opposite that which is close to the backrest (3), controls an articulated parallelogram whose two (10) adjacent vertices are pivots carried by the support (6), the other two vertices being axes linked to the same hook (29), which maneuvers the leg support (5) to vary the angle it makes with the seat support (4).

[0059] We can therefore see that the bed structure, which has just been described, allows, with a jack, a patient who is lying down to be brought into a more comfortable sitting position generally for him, without the need for the intervention of the nursing staff.

[0060] Moreover, if it is desired that the patient move from a sitting position to a walking position, the operation does not present any particular difficulty since the patient's feet do not encounter any obstacle in getting out of bed: indeed, all the mechanical control organs are grouped between the head panel (31) and the articulation between the elements (4) and (5) of the patient supports; the foot panel constitutes a plane inclined towards the ground.

[0061] If it is also desired that the patient remain supported on his legs in a vertical position, it is sufficient, from the supine position, to activate the verticalization jack (20), the patient remaining in contact with the support elements (3), (4), (5).

[0062] The bed according to the invention also allows for therapeutic positions with an angle of plus or minus 20°, to enable, for example, assistance in raising the patient when they have slipped at the foot of the bed. The tilting of the sleeping surface is achieved by controlling one of the two cylinders that adjust the bed's height relative to the floor; the cylinder on the leg side is used to lower the bed into a downward tilt, and the other cylinder to raise it into a downward tilt.

[0063] Finally, when it is desired to move a patient lying in bed according to the invention, the work of the nursing staff is greatly facilitated because, as already indicated, it is sufficient to place, between the bedding and the back of the patient, a harness (12a), to hook the harness (12a) to the end near the flexible link of the pole (10) while the sleeping surface is in its high position and, then, to bring the sleeping surface into the low position, which automatically lifts the harness (12a) and the patient.

[0064] With reference to Figures 19 to 22, the connection between the verticalization cylinder (20) and the primary frame (15) is achieved by interposing a set of connecting rods (21) and (22) between the two connected elements so that, when the flat sub-assembly reaches a position close to vertical, a slight upward displacement of said flat sub-assembly occurs. The bed according to the invention thus makes it possible to perform the function of verticalizing a patient.

Claims

Demands

1. Electric medical bed comprising: - a base (1) - a support (6) - a trapeze arm (10) - a flexible strap (11) mounted sliding at least at the free end of the trapeze arm (10) and having a first end attached to the support (6) and a second end intended to be attached to a harness (12a) characterized in that the trapeze arm (10) is self-supporting by means of a supporting structure (331) attached from which the trapeze arm (10) extends and comprising anti-tipping means for the supporting structure (331), the anti-tipping means providing at least one support on the ground at least at the level of the vertical line of the free end of the trapeze arm (10).

2. Medical bed according to claim 1, characterized in that the anti-tipping means comprise two legs (337) providing support on the ground on either side of a plane in which the support arm (10) extends.

3. Medical bed according to any one of the preceding claims, characterized in that the anti-tipping means comprise crutches, said crutches being articulated (333) relative to the supporting structure (331) by means of pivot links, to move from a neutral position folded along the support arm (10) to a stabilizing position in support on the ground.

4. Medical bed according to any one of the preceding claims, characterized in that the supporting structure (331) includes means for engaging with a cross member of the base (1).

5. Medical bed according to claim 4, characterized in that the engagement means are in the form of jaws (332) that clamp the crossbar.

6. Medical bed according to any one of the preceding claims, characterized in that the supporting structure is provided with casters (339).

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