WO2023017414A1

WO2023017414A1 - Patient repositioning apparatus and method

Info

Publication number: WO2023017414A1
Application number: PCT/IB2022/057414
Authority: WO
Inventors: Yoram KLEIN; Ran Zimbalista
Original assignee: Tel Hashomer Medical Research, Infrastructure And Services Ltd.; Savion Industries Ltd.
Priority date: 2021-08-10
Filing date: 2022-08-09
Publication date: 2023-02-16

Abstract

Apparatus (200) for turning a patient in a bed (100), is provided. The apparatus (200) includes a frame (280) that includes longitudinal poles (210) placed above the bed (100), and patient-rotating straps (220) extending from the longitudinal poles (210) toward the bed (100) configured to securely hold the patient, and to be movable to rotate the patient with respect to the bed from an initial position to a second position. The apparatus further includes a motor (260) that is operable to change a height of patient-rotating straps (220) on one side of the patient relative to a height of patient-rotating straps (220) on the second side of the patient, such as to cause the patient to turn between the supine and prone positions. Other applications are also described.

Description

PATIENT REPOSITIONING APPARATUS AND METHOD

CROSS-REFERENCES TO RELATED APPLICATIONS

The present application claims priority from US Provisional Patent Application 63/231,420 to Klein et al., entitled "Patient Repositioning Apparatus and Method," filed August 10, 2021, and which is incorporated herein by reference.

FIELD OF EMBODIMENTS OF THE INVENTION

Some applications of the present invention generally relate to medical assistive devices. Specifically, some applications of the present invention relate to apparatus and methods for repositioning a patient.

BACKGROUND

Immobility of a patient contributes to the deterioration of patient health, as these patients are susceptible to pressure ulcers, respiratory illness and other serious conditions. Generally, repositioning patients improves respiration, stimulates circulation, and reduces the occurrence of pressure ulcers. However, the task of manually repositioning a patient is labor intensive and time consuming. Manually repositioning a patient typically requires multiple medical staff members, and often results in back pain and other injuries to the staff members, especially as obesity rates among patients increase.

In some cases, repositioning of a patient is used to treat patients suffering from Acute Respiratory Distress Syndrome (ARDS). ARDS is a life-threatening condition characterized by hypoxia and decreased compliance of the lungs. Repositioning of the patients into a prone position is increasingly used in the treatment of these patients to improve oxygenation and thus reduce mortality.

The new corona virus SARS-CoV-2 has become a major public health concern with the global Covid- 19 outbreak. In some patients, the SARS-CoV-2 virus causes a pneumonia that is identified through fever, dyspnea, and acute respiratory symptoms. In some cases, Covid- 19 becomes exacerbated causing pulmonary edema, multi-organ failure, and Acute Respiratory Distress Syndrome (ARDS). Among the introduced treatment methods for management of ARDS patients, prone positioning has been found to be an effective therapy for improving ventilation in these patients. SUMMARY

In accordance with some applications of the present invention, apparatus and method are provided for repositioning a patient in a bed. More specifically, apparatus and method are provided for turning a patient in the bed from an initial position to a second position, e.g., from a supine position to a prone position and vice versa.

For some applications, a motor-activated apparatus and methods are provided for repositioning a patient in a bed, e.g., for turning the patient in the bed from an initial position to a second position, e.g., from a supine position to a prone position and vice versa. Typically, for such applications, the apparatus comprises one or more patient-rotating straps configured to be movable to rotate the patient. The apparatus further comprises a frame having a one or more longitudinal poles configured to be placed above the bed, the one or more patient-rotating straps extending from the one or more longitudinal poles toward the bed. The patient-rotating straps securely hold the patient, while being movable to rotate the patient with respect to the bed from an initial position to a second position. Typically, the apparatus further includes a patientsupporting platform, e.g., a mattress, configured to be placed above the bed and underneath the patient when the patient is an initial position in the bed. The patient-supporting platform is shaped to define one or more indentations, each extending along a width of the patient- supporting platform and being shaped and sized to receive the one or more patient-rotating straps when the patient is disposed in the initial position upon the patient-support platform. At least one motor is operable to move the patient-rotating straps such as to rotate the patient with respect to the bed from the initial position to the second position.

In accordance with additional applications of the present invention, the apparatus comprises a non-motorized apparatus for repositioning of a patient. For some such applications, the apparatus comprises a patient-receiving surface, a support stand and one or more straps. The patient-receiving surface is typically placed above the bed and underneath the patient when the patient is in the initial position in the bed, such that the patient is disposed in the initial position upon the patient-receiving surface. Additionally, the patient-receiving surface is rotatable with respect to the bed such that when the patient-receiving surface is rotated, the patient is rotated with respect to the bed from the initial position to the second position. Typically, the support stand includes a support surface, which receives the patient-receiving surface from the bed and supports the patient-receiving surface with the patient disposed thereon, prior to the patientreceiving surface being rotated with respect to the bed. When the patient-receiving surface is supported by the support surface, the patientreceiving surface is lifted from the support surface and rotated with respect to the bed, thereby rotating the patient with respect to the bed from the initial position to the second position. The patient-receiving surface is then lowered onto the bed together with the patient and subsequently removed, leaving the patient in the second, desired position.

Typically, the apparatus comprises one or more straps, e.g., patient- securing straps, that are coupled to the patient-receiving surface and securely hold the patient upon the patientreceiving surface, during rotation of the patient-receiving surface with respect to the bed. For some applications, the apparatus additionally comprises one or more bed-securing straps configured to secure the patient-receiving surface to the bed at least during rotation of the patientreceiving surface with respect to the bed.

There is therefore provided, in accordance with some applications of the present invention, apparatus for turning a patient between a supine position and a prone position with respect to a bed supporting the patient, the apparatus including: a frame including first and second longitudinal poles configured to be placed above the bed; one or more patient-rotating straps extending from the first and second longitudinal poles toward the bed and configured to be placed above the bed and underneath the patient when the patient is an initial position in the bed, such that the patient-rotating straps are configured to securely hold the patient, while being movable to rotate the patient with respect to the bed; and at least one motor operable to (a) retract first and second end portions of the one or more patient-rotating straps with respect to respective longitudinal poles so as to lift the patient from the bed, and subsequently (b) to extend a first portion of the one or more patient-rotating straps with respect to one of the longitudinal poles and/or retract a second portion of the one or more patient-rotating straps with respect to a second one of the longitudinal poles so as to rotate the patient.

In some applications, the first and second longitudinal poles are configured to be placed at a vertical height of 1.5-4 m above the bed.

In some applications, the one or more patient-rotating straps include 3 - 6 patient-rotating straps.

In some applications, lengths of the one or more patient-rotating straps are adjustable. In some applications, the patient is an intubated patient and the apparatus is configured to facilitate turning of the intubated patient from the initial position to the second position.

In some applications, the one or more patient-rotating straps include one or more inflatable attachments configured to be inflated to distance portions of the patient from the bed so as to reduce pressure sores.

In some applications, the one or more patient-rotating straps include pairs of first and second patient-rotating strap portions coupled respectively to the first and second longitudinal poles.

In some applications, the at least one motor is operable to rotate the patient by extending one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled.

In some applications, the at least one motor is operable to rotate the patient by retracting one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled.

In some applications, the at least one motor is operable to rotate the patient by extending a first one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled, while retracting a second one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled.

In some applications, the apparatus further includes a patient- supporting platform configured to be placed above the bed and underneath the patient when the patient is in the initial position in the bed, and shaped to define one or more indentations, each of the indentations extending along a width of the patient-supporting platform, and being shaped and sized to receive the one or more patient-rotating straps when the patient is disposed in the initial position upon the patient-support platform.

In some applications, the patient- supporting platform includes a mattress.

In some applications, each of the indentations in the patient- supporting platform has a length of 5-80 cm.

In some applications, each of the indentations in the patient- supporting platform has a width of 5-20 cm.

In some applications, the patient- supporting platform is shaped to define 3-6 indentations. In some applications, the apparatus further includes a control component configured to control the at least one motor to control motion of the one or more patient-rotating straps.

In some applications, the control component includes two joysticks, and each of the two joysticks is configured to control rotation of a respective one of the longitudinal poles.

In some applications, the control component includes a single joystick, which is configured to control rotation of both of the longitudinal poles.

There is further provided, in accordance with some applications of the present invention, apparatus for turning a patient in a bed, the apparatus including: a frame including one or more longitudinal poles configured to be placed above the bed; one or more patient-rotating straps extending from the one or more longitudinal poles toward the bed configured to securely hold the patient, and to be movable such as to rotate the patient with respect to the bed from an initial position to a second position; a patient-supporting platform configured to be placed above the bed and underneath the patient when the patient is in the initial position in the bed, and shaped to define one or more indentations, each of the indentations extending along a width of the patient- supporting platform, and being shaped and sized to receive the one or more patient-rotating straps when the patient is disposed in the initial position upon the patient- support platform; and at least one motor operable to move the patient-rotating straps such as to rotate the patient with respect to the bed from the initial position to the second position.

In some applications, the at least one motor is configured to extend a first end portion of the one or more straps and retract a second end portion of the one or more straps such as to rotate the patient with respect to the bed from the initial position to the second position.

In some applications, the one or more longitudinal poles are configured to be placed at a vertical height of 1.5-4 m above the bed.

In some applications, the patient- supporting platform includes a mattress.

In some applications, the patient- supporting platform is shaped to define 3-6 indentations. In some applications, the one or more patient-rotating straps include 3 - 6 patient-rotating straps.

In some applications, lengths of the one or more patient-rotating straps are adjustable.

In some applications, the initial position includes a supine position, and the second position includes a prone position and the apparatus is configured to facilitate turning the patient from the supine position to the prone position.

In some applications, the patient is an intubated patient and the apparatus is configured to facilitate turning of the intubated patient from the initial position to the second position.

In some applications, the apparatus further includes a control component configured to control the at least one motor to control motion of the one or more patient-rotating straps.

In some applications, the one or more longitudinal poles include at least first and second longitudinal poles placed above the bed, and the one or more patient-rotating straps include pairs of first and second patient-rotating strap portions coupled respectively to the first and second longitudinal poles.

There is further provided, in accordance with some applications of the present invention, a method for turning a patient in a bed, the method including: using a patient-supporting platform placed above the bed and underneath the patient when the patient is in an initial position in the bed, the patient-supporting platform being shaped to define one or more indentations, each of the indentations extending along a width of the patientsupporting platform; passing one or more patient-rotating straps in the indentations of the patient-supporting platform when the patient is disposed in the initial position upon the patient- support platform; and activating a motor to move the patient-rotating straps such as to rotate the patient with respect to the bed from the initial position to the second position.

In some applications, activating the motor to move the patient-rotating straps includes activating the motor to change a height of patient-rotating straps on one side of the patient relative to a height of patient-rotating straps on the second side of the patient, such as to cause the patient to turn between the initial position and the second position.

In some applications, the initial position includes a supine position, and the second position includes a prone position and the method includes activating a motor to move the patientrotating straps such as to rotate the patient with respect to the bed from the supine position to the prone position.

There is further provided in accordance with some applications of the present invention, apparatus for turning a patient in a bed, the apparatus including: a patient-receiving surface configured: to be placed above the bed and underneath the patient when the patient is an initial position in the bed, such that the patient is disposed in the initial position upon the patient-receiving surface, and to be rotatable with respect to the bed, such as to rotate the patient with respect to the bed from the initial position to a second position; a support stand that includes a support surface, the support surface being configured to receive the patient-receiving surface from the bed, and to support the patient-receiving surface with the patient disposed thereon, prior to the patient-receiving surface being rotated with respect to the bed; and one or more patient-securing straps that are coupled to the patient-receiving surface and that are configured to securely hold the patient upon the patient-receiving surface, during rotation of the patient-receiving surface with respect to the bed.

In some applications, lengths of the patient-securing straps are adjustable.

In some applications, the apparatus includes three or more patient-securing straps. In some applications, the apparatus is configured for use with one or more pillows that are configured to be placed on the patient, and the one or more patient- securing straps are configured to strap the pillows above the patient when the patient is disposed in the initial position upon the patient-receiving surface.

In some applications, the patient-receiving surface includes a side panel on a far side of the patient-receiving surface the side panel being configured to facilitate lifting of the far side of the patient-receiving surface to thereby rotate the patient with respect to the bed from the initial position to a second position.

In some applications, the support stand includes one or more hydraulic pistons configured to mechanically lift the support surface to facilitate rotation of the patient-receiving surface with respect to the bed.

In some applications, the support surface is configured to be manually lifted to facilitate rotation of the patient-receiving surface with respect to the bed.

In some applications, the apparatus further includes bed-securing straps configured to couple the bed to the patient-receiving surface to securely hold the patient-receiving surface to the bed during rotation of the patient-receiving surface with respect to the bed.

In some applications, the apparatus includes two or more bed-securing straps.

In some applications, lengths of the bed-securing straps are adjustable with respect to the bed.

There is further provided in accordance with some applications of the present invention, a method for turning a patient in a bed, the method including: placing a patient-receiving surface above the bed and underneath the patient when the patient is an initial position in the bed, such that the patient is disposed in the initial position upon the patient-receiving surface; strapping the patient to the patient-receiving surface such that the patient is securely held upon the patient-receiving surface; at least partially transferring the patient-receiving surface from upon the bed to a support surface, such that a near side of the patient-receiving surface is disposed alongside the bed, and a far side of the patient-receiving surface is disposed away from the bed; and lifting the far side of the patient-receiving surface such as to rotate the patient-receiving surface with respect to the bed, and to thereby rotate the patient with respect to the bed from the initial position to a second position.

The present invention will be more fully understood from the following detailed description of embodiments thereof, taken together with the drawings, in which:

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic illustration of components of an apparatus for turning a patient in a bed, in accordance with some applications of the present invention;

Figs. 2A and 2B are schematic illustrations of a support stand of the apparatus for turning the patient in the bed, in accordance with some applications of the present invention;

Figs. 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, and 3J are schematic illustrations showing respective steps of a procedure for turning the patient in the bed, in accordance with some applications of the present invention;

Fig. 4A is a schematic illustration showing components of an apparatus for turning a patient in a bed, in accordance with additional applications of the present invention;

Fig. 4B is a schematic illustration of a patient- supporting platform of the apparatus of Fig. 4A, in accordance with some applications of the present invention;

Fig. 5A is a schematic illustration of a side view of the apparatus of Fig. 4A for turning the patient in the bed, in accordance with some applications of the present invention;

Fig. 5B is a schematic illustration showing a patient positioned on the patient- supporting platform of the apparatus of Fig. 4A, in accordance with some applications of the present invention;

Fig. 6A, 6B, and 6C are schematic illustrations of a control component for activating a motor by a caregiver for controlling the apparatus of Fig. 4A, in accordance with some applications of the present invention; and Figs. 7A, 7B, 7C, 7D, and 7E are photographs showing respective steps of a procedure for turning the patient in the bed using the apparatus of Fig. 4A, in accordance with some applications of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

Reference is first made to Fig. 1, which is a schematic illustration of components of apparatus 20 for turning a patient in a bed, in accordance with some applications of the present invention. Apparatus 20 is configured for repositioning, e.g., turning, a bedridden, intubated, immobile and/or paralyzed patient in the bed in a safe manner for both the patient and the medical staff and caregivers. Apparatus 20 is typically configured to reposition the patient in a gentle and dignified manner while minimizing strain on the back for the caregivers and medical staff during the repositioning of both light and heavy patients. Apparatus 20 typically easily integrates with all types of beds including hospital beds and is suited for hospital and/or home care.

In accordance with some applications of the present invention, apparatus 20 typically comprises a patient-receiving surface 30, and a support stand 50 having support surface 60.

Typically, patient-receiving surface 30 is shaped and sized to have a patient disposed thereon and is configured to support the weight of the patient. For some applications, patientreceiving surface 30 comprises a side panel 40 and optionally, a side panel bar 44. Typically, apparatus 20 includes one or more patient-securing straps 82 coupled to patient-receiving surface 30 and configured to securely hold the patient upon patient-receiving surface 30 during use of apparatus 20. For some applications, the patient-securing straps are adjustable in length, such that their lengths may be adjusted to securely hold the patient upon patient-receiving surface 30. Typically, coupling elements 92 are coupled to patient-receiving surface 30, the coupling element being configured to secure patient-receiving surface 30 to the bed of the patient during use of apparatus 20, as described in further detail hereinbelow.

Fig. 1 additionally shows support stand 50 including support surface 60. During use of apparatus 20, support surface 60 receives patient-receiving surface 30 and supports patientreceiving surface 30 with the patient disposed thereon. In some applications, support stand 50 further includes a support stand side panel 70 and optionally, a support stand side panel bar 74.

Reference is now made to Figs. 2A and 2B, which are schematic illustrations of support stand 50, in accordance with some applications of the present invention. Typically, when used with the patient and subsequently to patient-receiving surface 30 being disposed on support surface 60, patient-receiving surface 30 is lifted and rotated with respect to the bed of the patient, as will be described in further detail with reference to Figs 3A-J. For some applications, patient- receiving surface 30 is lifted manually from support surface 60. Additionally, or alternatively, for some applications, patient-receiving surface 30 is mechanically lifted by support surface 60 in an automated or semi- automated manner. For some such applications, support stand 50 includes one or more, e.g., two, hydraulic pistons 160, which extend to lift support surface 60 in the direction of arrow A2, thereby lifting patient-receiving surface 30 from support stand 50 (patientreceiving surface 30 is not shown in Figs. 2A-B for reasons of clarity). For some applications, the extension of hydraulic pistons 160 to lift support surface 60 is controlled by medical staff/a caregiver through foot pedal 110. Typically, pushing down on foot pedal 110 in the direction indicated by arrow A4 causes extension of hydraulic pistons 160 and lifting of support surface 60, as shown in Fig. 2B. Alternatively or additionally, a different mechanism is used to control the hydraulic pistons.

Reference is now made to Figs. 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, and 3J, which are schematic illustrations showing respective steps of a procedure for turning the patient in the bed, in accordance with some applications of the present invention. Typically, apparatus 20 is used by medical staff and caregivers to reposition patients in bed 100. In Figs., 3A-J, the medical staff and caregivers using apparatus 20 in order to reposition the patient, are not shown in order to clearly show apparatus 20.

Figs. 3 A- J show apparatus 20 being used to turn the patient from a supine position to a prone position, by way of illustration and not limitation. It is noted that apparatus 20 is additionally or alternatively configured to turn the patient from a prone position to a supine position. Further additionally or alternatively, apparatus 20 is configured to facilitate any manner of repositioning the patient in the bed, e.g., repositioning the patient longitudinally in the bed, repositioning the patient laterally within the bed, turning the patient on their side, and/or lifting the patient.

For some applications, apparatus 20 is used to reposition an intubated patient connected to a mechanical ventilator. Although Figs. 3A-J do not show the patient as being an intubated patient, it is noted that apparatus 20 is configured for use with such patients in a safe manner generally without risking accidental extubation or interference with operation of the ventilator. This is particularly beneficial in managing intubated Covid-19 patients while turning them from a supine position to a prone position which has been demonstrated to improve their condition and outcome.

Fig. 3A shows the patient in an initial position (in this case a supine position) in bed 100.

Additionally, Fig. 3A illustrates patient-receiving surface 30 disposed on support stand 50 prior to use of apparatus 20. When turning the patient in the bed from the initial position to a second position is desired, apparatus 20 is advanced toward bed 100 in the direction indicated by arrow A6 (Fig. 3B) to align a near side of patient-receiving surface 30 with bed 100.

As further shown in Fig. 3B, typically, bed 100 is secured to patient-receiving surface 30 by locking coupling elements 92 of surface 30 to coupling elements 94 of bed straps 84. Bed straps 84 are typically adjustable in length to fit beds of various widths and/or lengths. Securing patient-receiving surface 30 to bed 100 holds patient-receiving surface 30 securely with respect to bed 100 during use of apparatus 20, thereby ensuring safety of the patient e.g., while patientreceiving surface 30 is transferred from bed 100 and rotated with respect to the bed as will be described hereinbelow with reference to Figs. 3G-H.

Subsequent to securing patient-receiving surface 30 to bed 100, patient-receiving surface 30 is advanced in the direction indicated by arrows A8 (Fig. 3C) to be placed above bed 100 and underneath the patient. Optionally, the patient is rolled on his/her side as indicated by arrows A10 to facilitate inserting patient-receiving surface 30 above bed 100 and underneath the patient. As shown in Fig. 3D, the patient is typically then rolled back in the direction indicated by arrows A12 to the initial position and optionally moved in the direction of arrow A 14 to be centered on top of patient-receiving surface 30. As shown in Fig. 3D, patient-receiving surface 30 is disposed above bed 100 and underneath the patient- while the patient is disposed in the initial position (in this case the supine position) upon patient-receiving surface 30.

Optionally but not necessarily, one or more pillows 120 (e.g., 3-6 pillows) and/or one or more bed sheets 130 may be placed across the body of the patient, as shown in Fig. 3E. The pillows and/or bed sheets may be placed upon the patient at any stage prior to turning the patient from the initial position to the second position. Fig. 3E shows pillows 120 and bed sheet 130 placed on the patient subsequent to placing patient-receiving surface 30 above bed 100 and underneath the patient, and prior to strapping the patient to the patient-receiving surface as shown in Fig. 3F. In general, any items disposed on the patient prior to turning the patient from the initial position to the second position, will be placed underneath the patient once the patient is in the second position. For example, if one or more pillows 120 are placed on the patient when in a supine position and covered with a top sheet 130 as shown in Fig. 3E, then when the patient is proned by apparatus 20, bed sheet 130 is placed over the bed as the new bed linen and under pillows 120 with the patient being positioned over the pillows. In such a manner further lifting of the patient in order to place pillows or any other type of padding or cushioning under the patient, once in a prone position, is avoided. This is practically useful when using apparatus 20 to prone mechanically-ventilated patients, as the pillows reduce chest and abdominal pressure and provide elevation to improve ventilation.

Fig. 3F shows strapping of the patient to patient-receiving surface 30 using patientsecuring straps 82 such that the patient is securely held upon patient-receiving surface 30. Subsequently, as shown in Fig. 3G, patient-receiving surface 30 is at least partially transferred from upon bed 100 to support surface 60 as indicated by arrows A16. As shown, patient-receiving surface 30 is removed from bed 100 such that a near side of patient-receiving surface 30 is disposed alongside bed 100, and a far side of patient-receiving surface 30 is disposed away from bed 100.

Reference is now made to Fig. 3H, which shows turning of the patient into the second position (in this case prone position). Following transferring of patient-receiving surface 30 from bed 100 to support surface 60, the far side of patient-receiving surface 30 is lifted to rotate patientreceiving surface 30 with respect to bed 100 as indicated by arrow A 18, thereby rotating the patient with respect to bed 100 from the initial position shown in Figs. 3A-G (supine position) to the second position (prone position) shown in Fig. 3H. For some applications, patient-receiving surface 30 is manually lifted by side panel 40, e.g., using side panel bar 44. Reference is again made to Figs. 2A-B. As shown in Figs. 2A-B, and described hereinabove, for some applications, patient-receiving surface 30 is mechanically lifted from support surface 60 in an automated or semi- automated manner, e.g., by raising support surface 60 using hydraulic pistons 160 which are housed in support stand 50.

Once rotated with respect to bed 100, patient-receiving surface 30 is lowered onto bed 100 such that the patient is in the second position (prone position) and sandwiched between bed 100 and patient-receiving surface 30.

Patient- securing straps 82 are then unstrapped and patient-receiving surface 30 is removed from the patient as indicated by arrow A20 (Fig. 31). Coupling elements 92 and 94 are unlocked and apparatus 20 is detached and removed away from bed 100 leaving the patient fully repositioned (e.g., proned), as shown in Fig. 3J.

Reference is now made to Figs. 4A-7E, which are schematic illustrations of a motorized apparatus for repositioning of a patient 201, in accordance with some applications of the present invention.

Reference is first made to Fig. 4A, which is a schematic illustration showing components of an apparatus 200 for turning a patient in a bed, in accordance with additional applications of the present invention. Apparatus 200 is typically a motor-activated apparatus configured for repositioning, e.g., turning, a bedridden, intubated, immobile and/or paralyzed patient in the bed in a safe manner for both the patient and the medical staff and caregivers. Apparatus 200 is configured to reposition the patient in a gentle and dignified manner while minimizing the number of caregivers required for the repositioning. For some applications, the apparatus allows a single caregiver to perform the repositioning, by activating the motor (as will be further described hereinbelow with reference to Figs. 6A-C). Since apparatus 200 is motor activated, use of apparatus 200 generally does not involve any physical strain on the caregivers and medical staff during the repositioning. Apparatus 200 is configured for repositioning of both light and heavy patients. Apparatus 200 typically is easily used with all types of beds including hospital beds and is suited for hospital and/or home care. For some applications, apparatus 200 is portable such that it can be moved from one bed to another bed.

In accordance with some applications of the present invention, apparatus 200 comprises a frame 280 comprising one or more longitudinal poles 210 (i.e. poles that are configured to run along the length of the bed), one or more patient-rotating straps 220, a patient- supporting platform 240, and at least one motor 260. (For some applications, one or more of patient-rotating straps 220 are made of a first patient-rotating strap portion 220a and a second patient-rotating strap portion 220b, which are coupled to each other, as described in further detail below, for example with reference to Fig. 5B.)

Apparatus 200 is shown in Fig. 4A surrounding bed 100 on which a patient typically lies (the patient is not shown in Fig. 4A, in order to clearly show apparatus 200). Apparatus 200 comprises a frame 280, which is typically an open structure, comprising four vertical frame members 230 arranged to form corners of a rectangle. For some applications, the frame is supported on wheels 281 for facilitating portability of apparatus 200. For some applications, the wheels comprise a locking mechanism for locking the wheel against rotation when apparatus 200 is maintained in a stationary position over bed 100 and for unlocking the wheel when apparatus 200 is moved from one bed to another. For some applications, vertical frame members 230 are spaced by a distance sufficiently greater than the width of a normal hospital bed such that frame 280 can be placed such as to surround bed 100, e.g., by being rolled on wheels.

For some applications, vertical frame members 230 are connected to upper longitudinal frame members 232. Upper longitudinal frame members 232 are typically connected by upper transverse frame members 234, which extend between upper longitudinal frame members 232 to further form a rectangular shape of frame 280. Upper longitudinal and transverse frame members 232 and 234 typically have a sufficient height above the floor (and bed 100) to allow lifting and rotating of the patient as will be described hereinbelow.

For some applications, apparatus 200 comprises one or more longitudinal poles 210, e.g., two longitudinal poles 210a and 210b. Longitudinal poles 210a and 210b are typically mounted inwardly with respect to upper longitudinal frame members 232, and generally parallel to, or higher than, upper longitudinal frame members 232. When frame 280 is positioned to surround bed 100, longitudinal poles 210a and 210b are placed above the bed, typically extending over a length of the bed (e.g., between transverse frame members 234). For some applications, longitudinal poles 210a and 210b are placed at a vertical height of 1.5-4 m above the floor (or a vertical height of 2-3 m above bed 100).

Apparatus 200 additionally comprises one or more patient-rotating straps 220 coupled to, and extending from, the one or more longitudinal poles 210 toward bed 100. More specifically, the end portions of patient-rotating straps 220 are wound around longitudinal poles 210a and 210b (e.g., in a spool-like manner), and the remainder of patient-rotating strap 220 extends toward bed 100. For some applications, the apparatus includes 3 - 6 (e.g., 4) patient-rotating straps 220.

For some applications, each patient-rotating strap 220 extends from one longitudinal pole to the other longitudinal pole so as to form a U shape in which the patient is positioned. For some applications, the apparatus includes a first set of patient-rotating strap portions 220a and second set of patient-rotating strap portions 220b (shown in Fig. 5A), such that each strap includes a pair of first and second patient-rotating strap portions 220a, 220b. Typically, first set of patient-rotating strap portions 220a is coupled to, and extends from, longitudinal pole 210a, and second set of patient-rotating strap portions 220b is coupled to, and extends from, longitudinal pole 210b. Typically, each of patient-rotating strap portions 220a is coupled to a corresponding patientrotating strap portion 220b (e.g., via a buckle 300, shown in Fig. 5A), such that when they are coupled to each other, they form a U-shaped patient-rotating strap 220. As described above, for some applications, the apparatus includes 3 - 6 (e.g., 4) patient-rotating straps.

Patient-rotating straps 220 are typically movable so as to lift the patient, and/or such as to rotate the patient with respect to the bed from an initial position to a second position, e.g., from a supine position to a prone position, while securely holding the patient. For example, patientrotating strap portions 220a and 220b are movable to extend and retract with respect to longitudinal poles 210a and 210b, to cause rotation of the patient with respect to the bed from the initial position to the second position.

Apparatus 200 additionally comprises at least one motor 260, e.g., a geared electric motor, operable to move the patient-rotating straps to cause the rotation of the patient with respect to the bed from the initial position to the second position. For some applications, apparatus 200 comprises two motors each configured to cause movement of a respective side of the patientrotating straps by rotating a respective longitudinal pole 210 (or portion thereof) and/or each configured to cause movement of a respective set of patient-rotating strap portions (i.e., set of strap portions 220a or set of strap portions 220b) by rotating a respective longitudinal pole 210. Typically, motors 260 rotate the longitudinal poles 210 (or portions thereof) to retract or extend the patient-rotating straps with respect to the longitudinal poles. Typically, patient-rotating strap portions 220a and 220b are movable to extend and retract with respect to longitudinal poles 210a and 210b by being unwound from, or wound around, the respective longitudinal poles by the longitudinal poles being rotated.

For some applications, apparatus 200 additionally comprises a patient- support platform 240, e.g., a mattress, configured to be placed above bed 100 and underneath the patient when the patient is an initial position in the bed. Patient-support platform 240 is shaped to define one or more indentations 250, each extending along width of the patient-supporting platform 240. Indentations 250 are each shaped and sized to receive a patient-rotating strap when the patient is disposed in the initial position upon patient-support platform 240.

Reference is now made to Fig. 4B, which is a schematic illustration of patient- supporting platform 240, in accordance with some applications of the present invention. For some applications, patient- supporting platform 240 is shaped to define 3-6 indentations 250, being spaced 20-50 cm apart from each other. For some applications, each indentation 250, has a length LI of 50-80 cm, which extends along an entire width of the patient- supporting platform 240. For some applications, each indentation 250 has a width W1 of 5-20 cm. As indicated in the cross- sectional view that is shown in Fig. 4B, for some applications, the patient- supporting platform is a mattress that includes an inner layer 251 (e.g., a foam inner layer) and a cover 253. Typically, the inner layer is shaped to form indentations that allow the cover to dip into the indentations. In this manner an indentation is formed in the cover, through which the straps can be inserted without disturbing the patient.

Reference is now made to Fig. 5A, which is a schematic illustration of a side view of apparatus 200, in accordance with some applications of the present invention. Fig. 5A shows patient-supporting platform 240 having indentation 250, and patient-rotating strap portion 220b being positioned in indentation 250. Fig. 5A additionally shows buckle 300 for coupling patientrotating strap portion 220a to a corresponding patient-rotating strap portion 220b, such that when they are coupled to each other, they form a U-shaped patient-rotating strap.

Reference is now made to Fig. 5B, which is a schematic illustration of a patient positioned on patient- supporting platform 240 of apparatus 200, in accordance with some applications of the present invention. As shown, patient- support platform 240, is placed underneath the patient when the patient is an initial position in the bed (in this case a supine position). Patient-rotating strap portion 220b is positioned in indentation 250, and under the patient. It is noted that the patient may be positioned on top of patient- support platform 240 following placement of patient-rotating strap portion 220b in indentation 250. Alternatively, patient-rotating strap portion 220b is passed underneath the patient while the patient is lying on patient-support platform 240. In such cases, indentations 250 are particularly advantageous in that they provide a void between the patient and the patient- support platform 240 which facilitates passing of the patient-rotating strap under the patient while generally avoiding lifting of the patient.

As shown in Fig. 5B, typically, after passing patient-rotating strap portion 220b underneath the patient, patient-rotating strap portion 220b is coupled to patient-rotating strap portion 220a, such that patient-rotating strap portion 220a and patient-rotating strap portion 220b form a U-shaped patient-rotating strap that is disposed underneath the patient. Patient-rotating strap portions 220a and 220b are typically adjustable in length to a state in which they securely hold the patient.

For some applications, patient-rotating strap portions 220a and 220b are woven from a polymer (e.g., polyester) that is readily cleanable and/or sterilizable using cleaning and sterilizing agents, e.g., similar to seat belts used in vehicles. Additionally, or alternatively, apparatus 200 comprises a sterilizer configured to disinfect components of apparatus 200, e.g., patient-rotating strap portions 220a and 220b. For some applications (not shown), apparatus 200 comprises a source of ultra-violet (UV) radiation of a wavelength suitable to kill or inactivate microorganisms, particularly pathogenic organisms. For example, one or more UV light sources may be coupled to longitudinal poles 210 and may be configured to sterilize strap portions as the portions are wound around the longitudinal poles.

For some applications, patient-rotating strap portions 220a and 220b are used with one or more inflatable attachments (e.g., inflatable sleeves (not shown)). The inflatable attachments are typically removably attached to the straps and are configured to be inflated such as to distance portions of the patient from the surface of the bed to reduce pressure on the skin, to thereby assist in relief of pressure sores.

Reference is now made to Figs. 6A, 6B, and 6C, which are schematic illustrations of remote-control component 450, via which a user 451 (e.g., a caregiver or a medical staff member) is able to control motor(s) 260, thereby controlling motion of patient-rotating strap portions 220a and 220b, and consequent rotation of the patient.

Control component 450 has switches to control operation of motor(s) 260. Typically, the apparatus includes a receiver 262 (shown in Fig. 4A) on frame 280. The receiver receives control instructions from control component 450 (e.g., via RF communication), and drives motors 260 to rotate responsively to the control instructions. In some applications, as shown in Figs. 6A and 6B the switches are in the form of one or more joysticks 470. For some applications, the control component includes two joysticks and each of the joysticks is configured to control the rotation of a respective one of longitudinal poles 210 (or portions thereof). The joysticks are configured to provide, for example, control over motor speed and control over direction of rotation of the longitudinal poles (or portions thereof). For other applications, the control component includes only one joystick configured to control operation of the motor (e.g. rotation of both longitudinal poles 210), as shown in Fig. 6C. Using one joystick typically simplifies operation of control component 450 by the user, avoiding the need to coordinated rotation of poles 210 with two or more joysticks. For example, the control component may be configured such that (a) if the joystick is pushed upwards the patient is raised, by both strap portions being shortened, (b) if the joystick is pushed downwards the patient is lowered, by both strap portions being lengthened (c) if the joystick is pushed to the left, the patient is rotated counterclockwise, by a first one of the strap portions being shortened relative to the second, and (d) if the joystick is pushed to the right, the patient is rotated clockwise, by the second one of the strap portions being shortened relative to the first strap portion.

For some applications, control component 450 has an emergency stop configured to immediately discontinue operation of the motor. For some applications, control component 450 is powered by rechargeable batteries which are removable and externally charged. For some applications, control component 450 has indicators to provide status such as battery charge status. Typically, joysticks 470 allow one-handed or two-handed operations of one or two motors 260.

Figs. 6A-C show a single caregiver operating motor(s) 260 via control component 450. Optionally, control component 450 is strapped to the caregiver via caregiver- strap 460, thereby freeing the hands of the caregiver to manipulate joysticks 470. For other applications, control component is not strapped to the caregiver. It is noted that control component 450 allows the caregiver to control motor 260 from a relative distance, which may be particularly useful when repositioning patients suffering from contagious diseases such as Covid- 19. Control component 450 typically controls apparatus 200 wirelessly (e.g., via RF communication, as described hereinabove).

Reference is now made to Figs. 7A, 7B, 7C, 7D, and 7E, which are schematic illustrations showing respective steps of a procedure for turning the patient in the bed using apparatus 200, in accordance with some applications of the present invention. Each of the figures shows both an isometric and an end view of a respective step of the procedure. Typically, apparatus 200 is used by medical staff and caregivers to reposition patients in bed 100. As described hereinabove with reference to Figs. 6A and 6B, the medical staff and caregivers activating apparatus 200 in order to reposition the patient, typically activate the apparatus from a relative distance (e.g., standing at the foot of the bed or farther therefrom). The medical staff and caregivers activating apparatus 200 are not shown in Figs. 7A-7E in order to clearly show apparatus 200.

Figs. 7A-7E show apparatus 200 being used to turn the patient from a supine position to a prone position, by way of illustration and not limitation. It is noted that apparatus 200 is additionally or alternatively configured to turn the patient from a prone position to a supine position. Further additionally or alternatively, apparatus 200 is configured to facilitate any manner of repositioning the patient in the bed, e.g., repositioning the patient longitudinally in the bed, repositioning the patient laterally within the bed, turning the patient on their side, and/or lifting the patient.

For some applications, apparatus 200 is used to reposition an intubated patient connected to a mechanical ventilator. Although Figs. 7A-7E do not show the patient as being an intubated patient, it is noted that apparatus 200 is configured for use with such patients in a safe manner generally without risking accidental extubation or interference with operation of the ventilator. This is particularly beneficial in managing intubated Covid-19 patients while turning them from a supine position to a prone position which has been demonstrated to improve their condition and outcome.

Figs. 7B-7E show the patient wearing a head and neck support brace 400 for providing support of the patient's head and neck, and preventing backlash, during rotation using apparatus 200, in accordance with some applications of the present invention.

Fig. 7A shows the patient in an initial position (in this case a supine position) in bed 100.

Additionally, Fig. 7A shows patient-support platform 240 disposed on top of bed 100 and underneath the patient. Strap portions 220a and 220b are shown following adjustment in length to tighten the straps such that the patient is securely held in the straps, thereby ensuring safety of the patient during rotation of the patient with respect to bed 100.

Subsequently to securing the patient within patient-rotating strap portions 220a and 220b, as shown in Fig. 7 A, motors 260 are activated to lift the patient above patient- support platform 240, using patient-rotating straps, to form a vertical space between the patient and an upper surface of patient-support platform 240 (Fig. 7B). Typically, lifting the patient to create the vertical space facilitates rotating the patient in subsequent steps. Additionally, or alternatively, lifting the patient to create a vertical space between the patient and an upper surface of patient-support platform 240, can allow changing of linen or placing any items under the patient, e.g., pillows. Typically, lifting of the patient is achieved by operating the motor to retract the ends of patient-rotating strap portions 220a and 220b with respect to longitudinal poles 210a and 201b respectively (the end portions of patient-rotating strap portions 220a and 220b being wound around longitudinal poles 210a and 201b respectively, as described hereinabove).

Subsequently to lifting the patient as shown in Fig. 7B, motor 260 is activated to begin rotation of the patient. Rotating the patient is typically achieved by operating the motor to change a height of the patient-rotating straps on one side of the patient relative to a height of the patientrotating straps on the second side of the patient, such as to cause the patient to tilt as shown in Fig. 7C.

More specifically, for some applications, rotating the patient is achieved (a) by extending the end of one set of the patient-rotating strap portions 220a or 220b with respect to their respective longitudinal pole 210a or 201b (b) by retracting the end portion of the second set of patientrotating straps with respect to their respective longitudinal pole, or (c) by extending the end of one set of the patient-rotating strap portions 220a or 220b with respect to their respective longitudinal pole 210a or 201b, while retracting the end portion of the second set of patientrotating straps with respect to their respective longitudinal pole. In this manner, the patient is typically tilted in a given direction within the patient-rotating straps, as shown in Fig. 7C.

Advantageously, apparatus 200 is configured such that the patient automatically continues to rotate with respect to the bed following the titling, to complete the rotation to the prone position, which is shown in Fig. 7D. In other words, following activating the motor to move patientrotating straps to tilt the patient in a given direction (Fig. 7C), the caregiver generally does not need to use control component 450 to complete rotation of the patient to the prone position. Alternatively, rotation of the patient is completed by continuing to extend and/or retract the patient-rotating straps in the manner in which they were rotated in the previous step.

Once fully rotated with respect to bed 100, the patient is lowered onto bed 100 (Fig. 7E). Patient-rotating strap portions 220a and 220b are then unbuckled and removed from the patient leaving the patient fully repositioned (e.g., proned).

Although some applications of the present invention have been described in the context of turning a patient for a therapeutic purpose, the scope of the present invention includes using apparatus 20 and apparatus 200 for non-therapeutic purposes (e.g., to turn a person in order to reduce snoring). It is further noted that apparatus 20 and 200 typically do not contain any magnetic components and are compatible for use with MRI. As such, for some applications, apparatus 20 and 200 are used to move a patient with respect to an MRI platform (e.g., moving a patient onto the MRI platform, removing the patient from the MRI platform, and/or turning the patient with respect to the MRI platform). It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described hereinabove. Rather, the scope of the present invention includes both combinations and subcombinations of the various features described hereinabove, as well as variations and modifications thereof that are not in the prior art, which would occur to persons skilled in the art upon reading the foregoing description.

Claims

1. Apparatus for turning a patient between a supine position and a prone position with respect to a bed supporting the patient, the apparatus comprising: a frame comprising first and second longitudinal poles configured to be placed above the bed; one or more patient-rotating straps extending from the first and second longitudinal poles toward the bed and configured to be placed above the bed and underneath the patient when the patient is an initial position in the bed, such that the patient-rotating straps are configured to securely hold the patient, while being movable to rotate the patient with respect to the bed; and at least one motor operable to (a) retract first and second end portions of the one or more patient-rotating straps with respect to respective longitudinal poles so as to lift the patient from the bed, and subsequently (b) to extend a first portion of the one or more patient-rotating straps with respect to one of the longitudinal poles and/or retract a second portion of the one or more patient-rotating straps with respect to a second one of the longitudinal poles so as to rotate the patient.

2. The apparatus according to claim 1, wherein the first and second longitudinal poles are configured to be placed at a vertical height of 1.5-4 m above the bed.

3. The apparatus according to any one of the preceding claims, wherein the one or more patient-rotating straps comprise 3 - 6 patient-rotating straps.

4. The apparatus according to any one of the preceding claims, wherein lengths of the one or more patient-rotating straps are adjustable.

5. The apparatus according to any one of the preceding claims, wherein the patient is an intubated patient and wherein the apparatus is configured to facilitate turning of the intubated patient from the initial position to the second position.

6. The apparatus according to any one of the preceding claims, wherein the one or more patient-rotating straps comprise one or more inflatable attachments configured to be inflated to distance portions of the patient from the bed so as to reduce pressure sores.

7. The apparatus according to any one of claims 1-6, wherein the one or more patient-rotating straps comprise pairs of first and second patient-rotating strap portions coupled respectively to the first and second longitudinal poles.

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8. The apparatus according to claim 7, wherein the at least one motor is operable to rotate the patient by extending one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled.

9. The apparatus according to claim 7, wherein the at least one motor is operable to rotate the patient by retracting one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled.

10. The apparatus according to claim 7, wherein the at least one motor is operable to rotate the patient by extending a first one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled, while retracting a second one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled.

11. The apparatus according to any one of claims 1-6, further comprising a patient- supporting platform configured to be placed above the bed and underneath the patient when the patient is in the initial position in the bed, and shaped to define one or more indentations, each of the indentations extending along a width of the patient- supporting platform, and being shaped and sized to receive the one or more patient-rotating straps when the patient is disposed in the initial position upon the patient-support platform.

12. The apparatus according to claim 11, wherein the patient- supporting platform comprises a mattress.

13. The apparatus according to claim 11, wherein each of the indentations in the patientsupporting platform has a length of 5-80 cm.

14. The apparatus according to claim 11, wherein each of the indentations in the patientsupporting platform has a width of 5-20 cm.

15. The apparatus according to claim 11, wherein the patient- supporting platform is shaped to define 3-6 indentations.

16. The apparatus according to any one of claims 1-6, further comprising a control component configured to control the at least one motor to control motion of the one or more patient -rotating straps.

17. The apparatus according to claim 16, wherein the control component comprises two joysticks, wherein each of the two joysticks is configured to control rotation of a respective one of the longitudinal poles.

18. The apparatus according to claim 16, wherein the control component comprises a single joystick, which is configured to control rotation of both of the longitudinal poles.

19. Apparatus for turning a patient in a bed, the apparatus comprising: a frame comprising one or more longitudinal poles configured to be placed above the bed; one or more patient-rotating straps extending from the one or more longitudinal poles toward the bed configured to securely hold the patient, and to be movable such as to rotate the patient with respect to the bed from an initial position to a second position; a patient-supporting platform configured to be placed above the bed and underneath the patient when the patient is in the initial position in the bed, and shaped to define one or more indentations, each of the indentations extending along a width of the patient- supporting platform, and being shaped and sized to receive the one or more patient-rotating straps when the patient is disposed in the initial position upon the patient- support platform; and at least one motor operable to move the patient-rotating straps such as to rotate the patient with respect to the bed from the initial position to the second position.

20. The apparatus according to claim 19, wherein the at least one motor is configured to extend a first end portion of the one or more straps and retract a second end portion of the one or more straps such as to rotate the patient with respect to the bed from the initial position to the second position.

21. The apparatus according to claim 19 or claim 20, wherein the one or more longitudinal poles are configured to be placed at a vertical height of 1.5-4 m above the bed.

22. The apparatus according to any one of claims 19-21, wherein the patient-supporting platform comprises a mattress.

23. The apparatus according to any one of claims 19-22, wherein each of the indentations in the patient- supporting platform has a length of 5-80 cm.

24. The apparatus according to any one of claims 19-23, wherein each of the indentations in the patient- supporting platform has a width of 5-20 cm.

25. The apparatus according to any one of claims 19-24, wherein the patient-supporting platform is shaped to define 3-6 indentations.

26. The apparatus according to any one of claims 19-25, wherein the one or more patientrotating straps comprise 3 - 6 patient-rotating straps.

27. The apparatus according to any one of claims 19-26, wherein lengths of the one or more patient-rotating straps are adjustable.

28. The apparatus according to any one of claims 19-27, wherein the initial position includes a supine position, and the second position includes a prone position and wherein the apparatus is configured to facilitate turning the patient from the supine position to the prone position.

29. The apparatus according to any one of claims 19-28, wherein the patient is an intubated patient and wherein the apparatus is configured to facilitate turning of the intubated patient from the initial position to the second position.

30. The apparatus according to any one of claims 19-29, further comprising a control component configured to control the at least one motor to control motion of the one or more patient-rotating straps.

31. The apparatus according to any one of claims 19-30, wherein the one or more patientrotating straps comprise one or more inflatable attachments configured to be inflated to distance portions of the patient from the bed so as to reduce pressure sores.

32. The apparatus according to any one of claims 19-31, wherein the one or more longitudinal poles comprise at least first and second longitudinal poles placed above the bed, and the one or more patient-rotating straps comprise pairs of first and second patient-rotating strap portions coupled respectively to the first and second longitudinal poles.

33. The apparatus according to claim 32, wherein the at least one motor is operable to rotate the patient by extending one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled.

34. The apparatus according to claim 32, wherein the at least one motor is operable to rotate the patient by retracting one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled.

35. The apparatus according to claim 32, wherein the at least one motor is operable to rotate the patient by extending a first one of the patient-rotating strap portions within each pair of patientrotating strap portions with respect to the longitudinal pole to which is it is coupled, while retracting a second one of the patient-rotating strap portions within each pair of patient-rotating strap portions with respect to the longitudinal pole to which is it is coupled.

36. A method for turning a patient in a bed, the method comprising:

25 using a patient-supporting platform placed above the bed and underneath the patient when the patient is in an initial position in the bed, the patient-supporting platform being shaped to define one or more indentations, each of the indentations extending along a width of the patientsupporting platform; passing one or more patient-rotating straps in the indentations of the patient-supporting platform when the patient is disposed in the initial position upon the patient- support platform; and activating a motor to move the patient-rotating straps such as to rotate the patient with respect to the bed from the initial position to the second position.

37. The method according to claim 36, wherein activating the motor to move the patient- rotating straps comprises activating the motor to change a height of patient-rotating straps on one side of the patient relative to a height of patient-rotating straps on the second side of the patient, such as to cause the patient to turn between the initial position and the second position.

38. The method according to claim 36 or claim 37, wherein the initial position includes a supine position, and the second position includes a prone position, and wherein the method comprises activating a motor to move the patient-rotating straps such as to rotate the patient with respect to the bed from the supine position to the prone position.

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