Hose for patient support covering comprising pneumatically operated assembly

Abstract

The utility model discloses a hose for a patient supporting covering comprising a pneumatic operating component, which comprises a plurality of independent flow paths connected to corresponding pneumatic controlled components so as to provide flow for the corresponding pneumatic controlled components, and a connector connected with the plurality of independent flow paths and used for connecting the plurality of independent flow paths with the corresponding pneumatic controlled components so as to provide flow for the corresponding pneumatic controlled components. And a connector configured to be connected to a connector of a control box for operating the pneumatically operated assembly of the patient support cover, the connector having a predetermined arrangement for engagement with the receiver, the pneumatic circuit is configured to align the valve of the pneumatic circuit with the respective pneumatically controlled assembly of the patient support cover.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Serial No. 63 / 080,353, filed on September 18, 2020, the disclosure of which is expressly incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a mattress covering for use in conjunction with a patient support device. More particularly, the present disclosure relates to a control unit and a mattress covering that provides lateral rotation for a patient and provides moisture management to reduce moisture at the patient's skin. Background Art

[0004] Patients confined to patient support devices, such as hospital beds, are at increased risk for medical complications, such as lung complications or skin breakdown. Excessive moisture on the user's skin exacerbates this risk. One source of moisture is the user's own perspiration. As patients remain confined to the patient support device for extended periods, moisture accumulates and, combined with body heat, can have a detrimental effect on the patient's skin. This can lead to pressure ulcers, also known as bedsores, which can become infected. Lack of exercise can further exacerbate this damage.

[0005] Similarly, inactive patients can develop lung complications from spending extended periods in a supine position in bed. Their lack of movement can also cause fluid to build up in their lungs, increasing the likelihood of pneumonia.

[0006] Various approaches have been implemented to address the complications of patient immobility in fully functional hospital beds or similar patient support devices. While fully functional devices offer significant benefits, they are costly and difficult to deploy in rural settings. Despite various efforts to address this gap, there remains a continuing need to cost-effectively deploy state-of-the-art technology in areas or situations where fully functional beds may not be available or appropriate. Summary of the Invention

[0007] The present disclosure comprises the features recited in the appended claims and / or one or more of the following features, which alone or in any combination may comprise patentable subject matter.

[0008] The present disclosure relates to a hose for a patient support cover including a pneumatically operated assembly, the hose comprising:

[0009] a plurality of independent flow paths connected to respective pneumatically controlled components to provide flow to the respective pneumatically controlled components, and a connector configured to connect to a connector of a control box for operating the pneumatically operated components of the patient support cover, the connector having a predetermined arrangement for engaging with a receiver to align a valve of a pneumatic circuit with the respective pneumatically controlled component of the patient support cover.

[0010] The connector is configured to be received in the generally circular cavity of the receptacle.

[0011] The connector includes a key configured to be received in a keyway of the receiver to align the receiver when the connector is connected to the receiver.

[0012] The connector is configured to be engaged by a plurality of couplers extending from a recessed surface in the circular cavity of the receiver, each of which is engageable by a portion of the connector to form a flow path for each of the corresponding functions of the patient support cover.

[0013] The plurality of couplers include an air cushion coupler, a moisture transfer cover coupler, a left-turn air bag coupler, and a right-turn air bag coupler.

[0014] Each of the couplers has a cylindrical body defining a coupler axis, two of the couplers are vertically aligned such that a line connecting their axes defines a vertical axis of the receiver, two of the couplers are horizontally aligned such that a line connecting their axes defines a horizontal axis of the receiver, the vertical and horizontal axes of the receiver intersect to define an origin, wherein each of the couplers is positioned an equal distance from the origin.

[0015] The connector is configured to engage the keyway of the receiver, and when the connector is engaged with the receiver, the connector of the patient support cover is aligned with the receiver by engagement with the keyway.

[0016] The coupling of the vertical axis located above the origin provides flow to the air cushion.

[0017] The coupling on the horizontal axis to the right of the origin provides flow to the moisture transfer cover.

[0018] The coupler on the vertical axis below the origin provides flow to the right turning airbag.

[0019] The coupler on the horizontal axis to the left of the origin provides flow for the left-turning airbag.

[0020] According to a first aspect of the present disclosure, a patient support system includes a patient support cover. The patient support cover is adapted to be positioned on and secured to a mattress. The patient support cover includes a rotator, an air cushion, and a moisture transfer cover. The rotator is operable to laterally rotate a patient supported on the cover. The air cushion is operable to support the patient with continuous low pressure and to control the contact surface pressure applied to the patient's skin. The moisture transfer cover is operable to move moisture away from the patient's skin, thereby cooling and drying the patient's skin. The rotator is configured to be positioned above an existing mattress body, the air cushion is positioned above the rotator, and the moisture transfer cover is positioned above the air cushion.

[0021] According to a second aspect of the present disclosure, a control box for operating a patient support cover includes a controller, a user interface, an air source, a pneumatic circuit, and a plurality of pressure sensors. The controller includes a processor and a memory device storing instructions accessible by the processor to control the functions of the control box. The user interface communicates with the controller. The user interface includes a touchscreen display that provides user-readable graphical data and provides dynamic inputs to be used by the user to provide control signals to the controller. The air source includes a driver that communicates with the controller and operates under the control of the controller to provide an air source to the components of the patient support cover. The pneumatic circuit includes valves that communicate with the controller. The pneumatic circuit, under the control of the controller, limits the flow of air from the air source to the various components of the patient support cover. The pressure sensors communicate with the controller and provide information regarding the operation of the patient support cover. The control box is operable to operate the moisture transfer cover, the air cushion, and a rotator capable of providing bilateral rotation to a patient supported on the patient support cover.

[0022] Additional features, alone or in combination with any other features such as those listed above and / or in the claims, may comprise patentable subject matter and will become apparent to those skilled in the art upon consideration of the following detailed description of various embodiments illustrating the best presently recognized modes of carrying out such embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The detailed description makes particular reference to the accompanying drawings, in which:

[0024] Figure 1 is a perspective view of a portion of a hospital bed supporting a system of the present disclosure, the system including a control box supported on the hospital bed and a patient support cover supported on a mattress of the hospital bed;

[0025] Figure 2 is a schematic diagram of a cross section of a patient support cover positioned on a mattress;

[0026] Figure 3 is similar to Figure 2 Schematic diagram, in Figure 3 The patient support cover is shown as exploded assembly;

[0027] Figure 4 yes Figure 1 A schematic top view of an air cushion of a patient support cover;

[0028] Figure 5 yes Figure 1 A top view of a patient support cover, showing the shape of the rotating airbag with dotted lines;

[0029] Figure 6 yes Figure 1 The block diagram of the control system of the system;

[0030] Figure 7 yes Figure 1 Flowchart of the control algorithm of the system;

[0031] Figure 8 yes Figure 1 A side view of the control box of the system;

[0032] Figure 9 yes Figure 1 a partial isometric view of a control box for a system of FIG, with the receivers magnified to illustrate their arrangement; and

[0033] Figure 10 yes Figure 1 Schematic diagram of the system's pneumatic circuit, which interfaces with the air source and patient support cover. DETAILED DESCRIPTION

[0034] refer to Figure 1 , system 10 includes a patient support cover 12 that is supported on a mattress 14 of a patient support device, illustratively embodied as a hospital bed 16. The patient support cover 12 is connected to a control box 18 such that the control box 18 provides airflow to the patient support cover 12 and controls various functions of the patient support cover 12, which will be described in further detail below. The control box 18 is configured to be supported on the hospital bed 16, but the system 10 is independent of the underlying hospital bed 16. This allows the system 10 to be deployed on any patient support device, including a stretcher, a home care bed, a home bed, or any other location that can support a person or patient in a supine position on an underlying structure. By using this approach, the functionality of the system 10 is not dependent on the underlying structure.

[0035] The system 10 includes the functionality required to provide therapeutic and preventative support to a patient positioned on a patient support cover 12. As will be discussed further below, the system 10 is configured to provide a continuous low pressure (CLP) support surface that can be operated to provide continuous subsequent rotation therapy (CLRT). Additionally, the system 10 includes a moisture transfer cover (MTC) that is operable to move moisture (e.g., sweat) away from the patient's skin to reduce the incidence of skin cracking, which leads to pressure ulcers on the skin, also known as bedsores.

[0036] The operation of the system 10 can be best understood by first referring to the patient support cover 12. The patient support cover 12 is Figure 2 It is shown schematically in Figure 3 1 . The patient support cover 12 includes a lower cover 20 having a lower surface 22 that covers a typical patient support structure, such as a mattress 14. A pair of fabric flaps 24, 26 extend from the lower cover 20 and are configured, for example, to wrap under the mattress and be sandwiched between the mattress and the support structure below the mattress, such as the platform of the hospital bed 16. The weight of the mattress, the patient support cover 12, and a patient on the patient support cover 12 causes the flaps 24, 26 to retain the patient support cover 12 relative to the mattress even if the platform member of the hospital bed 16 is moved.

[0037] A rotator 27 including a pair of rotating airbags 28 , 30 is located on an upper surface 32 of the lower cover 20 . Figure 2 The schematic diagram shown in FIG is from the foot end of the patient support cover 12 so that when the patient is lying in the supine position, the right side is located at Figure 2 . Thus, the rotating airbag 28 is referred to as the right rotating airbag 28 because it is located on the right side of the patient. Similarly, the rotating airbag 30 is referred to as the left rotating airbag 30. The rotating airbags 28, 30 are positioned so that the corresponding side of the patient is elevated relative to the lower cover 20 and, therefore, relative to the mattress or other structure supporting the patient support cover 12. The rotating airbags 28, 30 are positioned so that the corresponding side of the patient is elevated relative to the lower cover 20 and, therefore, relative to the mattress or other structure supporting the patient support cover 12. Figure 2 The dotted lines in FIG2 schematically show the inflated state to illustrate the approximate shape of the rotating airbags 28 and 30 when inflated. Figure 5 Shown in phantom, the rotational bladders 28, 30 are mirror images, with the larger portion 68 located near the head end 66 of the patient support cover 12 and the tapered portion 70 located near the foot end 72 so that the patient's lower body does not rotate as much as the patient's upper body when the rotational bladder 28 or 30 is inflated.

[0038] Located above the rotating air cells 28, 30 is the air cushion 34 which provides the primary support for the patient. Although the air cushion 34 is a single pneumatic volume, it is a complex structure that provides support for the patient and is constructed as a number of interconnected chambers 40 that cooperate to distribute the patient's load. It is constructed from an upper sheet 36 and a lower sheet 38 that are ultrasonically welded around the perimeter and at several locations throughout the air cushion to form the chambers 40. It should be understood that the cushion 34 has multiple locations where the upper sheet 36 and lower sheet 38 are welded together. See Figure 4 , shows a schematic diagram of a cushion 34. The chambers 40 are all interconnected to allow fluid to flow within the chambers 40 of the cushion 34. However, by welding the sheets 36, 38 together, seams 42 are created at various locations. The seams 42 serve to reduce the support area of ​​any given chamber 40, allowing the air cushion 34 to operate as if the chamber 40 were a separate cushion. In some locations 44, gaps 42 are cut to create slits 43 to allow adjacent chambers 40 to have some freedom of movement relative to each other. This approach provides an inexpensive way to construct the cushion 34 while producing performance that mimics more complex structures.

[0039] Positioned above the cushion 34 is a bed cover 50 that functions as a moisture transfer bed cover 50, transferring moisture generated beneath the patient away from the patient's skin and out of the moisture transfer bed cover 50. The moisture transfer bed cover 50 comprises five layers, including an upper layer 52 and a lower layer 54 connected together around a perimeter. The upper layer 52 has an upper surface 56 that supports the patient. In some cases, a sheet or other bedding may be positioned above the upper surface 56. The upper layer 52 is configured to allow moisture, particularly moisture vapor, to transfer through the upper layer 52 into a chamber 58 of the moisture transfer bed cover 50. The lower layer 54 is secured to the upper layer 52, and they cooperate to define the chamber 58. The lower layer 54 is vapor-impermeable, such that any moisture that transfers into the chamber 58 is prevented from transferring through the lower layer 54.

[0040] Contained within the chamber 58 is a three-dimensional spacer fabric 60 that is wrinkle-resistant and allows air to flow through the fibers of the spacer fabric 60 while still supporting the patient load. Furthermore, the spacer fabric is enclosed in a nonwoven fabric having an upper layer 62 and a lower layer 64 secured together around its perimeter. The nonwoven fabric allows air and vapor moisture to flow freely while still providing an enclosure for the spacer fabric 60.

[0041] In use, airflow is introduced into the chamber 58 near the foot end of the moisture transfer mattress cover 50 and flows longitudinally from the foot end of the moisture transfer mattress cover 50 to the head end of the moisture transfer mattress cover 50 where it is exhausted from the moisture transfer mattress cover 50. Thus, moisture transferred from the patient's skin into the chamber 58 is subsequently released into the chamber 58. Figure 5The moisture transfer cover 50 is drained away at openings 74 , which are schematically shown.

[0042] Now refer to Figure 6 , shows a block diagram of a control system 100 of system 10. Control system 100 includes a controller 102, a gas source 103, a pneumatic circuit 104, a user interface 106, and a plurality of sensors 108. Control system 100 also includes a power supply 110 and a data port 112, illustratively embodied as a USB data port. Controller 102 includes a microprocessor 114 and a memory device 116 containing instructions that, when executed by microprocessor 114, control the operation of the control system components. Similarly, user interface 106 also includes a microprocessor 118 and a memory device 120 containing instructions that, when executed by microprocessor 118, control the operation of user interface 106 and communications between user interface 106 and controller 102.

[0043] refer to Figure 10 , the air source 103 is illustratively embodied as a blower and has an inlet 130 and an outlet 132. In this case, the inlet 130 is connected to a filter 134 and refers to the side of the blower 103 that creates a vacuum as the blower 103 draws air into the blower 103, while the outlet 132 is the side of the blower 103 that pushes air out of the blower 103 to provide positive pressure.

[0044] The pneumatic circuit 104 includes four valves 140, 142, 144, and 146, each associated with a specific function of the patient support cover 12. Valve 140 is a two-way valve and is connected to a manifold 148, which is connected to the blower outlet 132 so that when the blower 103 is operated when valve 140 is open, pressurized air in the manifold 148 can be directed to the air cushion 34. As will be discussed further below, under certain circumstances, air can be allowed to exhaust from the air cushion 34.

[0045] Valve 142 is also a two-way valve and is connected to manifold 148. Valve 142 is also connected to chamber 58 of moisture transfer mattress cover 50 so that when pressurized air is sent to manifold 148 and valve 142 is open, pressurized air from blower 103 is sent to chamber 58 of moisture transfer mattress cover 50.

[0046] Valves 144 and 146 are three-way valves, associated with the right and left rotating airbags 28 and 30, respectively. These valves allow the air within the rotating airbags 28 and 30 to be drawn out by the blower 103 under vacuum. Each valve 144 and valve 146 is connected to a secondary manifold 150, which is connected to a manifold 148 to allow pressurized air in manifold 148 to pass through manifold 150 and be selectively directed to either the rotating airbags 28 or 30. Manifold 150 includes a non-powered check valve 151, which prevents backflow from the rotating airbags 28 and 30 from being diverted into manifold 148. Valves 144 and 146 can move between three positions: a closed position, a pressurized position, and a vacuum position. In the closed position, air does not flow through the corresponding valve 144 or valve 146. When one of the valves is in the open position, pressurized air flows through manifold 148 and manifold 150, through the corresponding valve 144 or valve 146, and into the corresponding rotating airbag 28 or rotating airbag 30. When one of valves 144 or valve 146 is in the vacuum position, the corresponding valve 144 or valve 146 connects the corresponding airbag 28 or airbag 30 to manifold 152, which is connected to the blower inlet 130, so that the blower 103 draws air from the corresponding airbag 28 or airbag 30 to quickly deflate the airbag 28 or airbag 30. The powered deflation of the rotating airbag 28 or rotating airbag 30 improves the performance of the CLRT function compared to simply allowing air to be exhausted from the airbag 28 or airbag 30 to the atmosphere through the moisture transfer cover 50.

[0047] However, deflating of the cushion 34 is accomplished by pausing the blower 103 (so that the manifold 148 is not pressurized) and opening the valve 140 (so that air can enter the manifold 148). Simultaneously, the valve 142 is opened to allow air in the cushion 34 to move through the manifold 148 and the valve 142 to the moisture transfer cover 50. This is an efficient and effective method of arranging the pneumatic circuit 104 because the need to deflate the cushion 34 is an infrequent event, and this method limits the need for additional valving to accomplish deflating of the cushion 34.

[0048] In most cases, the valve 142 associated with the moisture transfer cover 50 is moved to the open position to allow the blower 103 to push air through the moisture transfer cover 50 to achieve the moisture control desired to protect the patient's skin.

[0049] like Figure 5As shown, each of the airbags 28, 30, and the air cushion 34 has a corresponding pressure sensing tube 153, 154, or 156 connected to a corresponding pressure sensor 158, 160, or 162. The pressure sensor 158, 160, or 162 provides a signal representing the pressure in the corresponding air volume 28, 30, 34 to the controller 102 so that the controller 102 can control the operation of the blower 103 and the corresponding valve 144, 146, or 140 to control the flow of air into and out of the airbag 28 or airbag 30 and the air cushion 34.

[0050] A separate pressure sensor 164 is connected to the manifold 148 to measure the pressure in the manifold 148. The pressure in the manifold 148 can be compared to the pressure in any of the airbags 28, 30, or the air cushion 34 to determine whether the system 10 is operating as intended. In some embodiments, the pressure sensor 164 can be omitted, and the controller 102 can rely solely on the signals from the pressure sensors 158, 160, and 162. In other embodiments, the pressure sensors 158, 160, and 162 can be omitted, and the pressure signal from the pressure sensor 164 can be used to evaluate the pressure in the corresponding airbag 28, 30, or air cushion 34. The pressure sensor 164 can also be used to determine whether the flow through the moisture transfer cover 50 is adequate by determining whether there is an unexpected pressure rise.

[0051] The blower 103 includes a speed controller 170 that, under the control of the controller 102, can vary the speed and, thereby, the air flow from the blower 103 to vary the operating performance of the moisture transfer cover 50. In some embodiments, the blower 103 can be a single-speed blower, and the controller 102 can simply turn the blower 103 on or off via the speed controller 170.

[0052] In some embodiments, the air cushion 34 can be divided into zones, such as a head zone, a base zone, and a foot zone. In this case, the operation of the valve 140 and the sensor 162 can be replicated for each zone, and the zones can be controlled similarly to the operation and pressure control in the air cushion 34 described above.

[0053] like Figure 1 As shown, the control box 18 is connected to the patient support cover 12 via a conduit assembly 170 having a connector 172 that engages a receiver 174 to provide a respective flow path for each of the valves 140, 142, 144, and 146 to a respective function of the patient support cover 12. Referring now to Figure 6 , the receiver 174 has a predetermined arrangement that mates with the connector 172 to ensure proper respective functional engagement of the valves 140 , 142 , 144 , and 146 with the patient support cover 12 .

[0054] refer to Figure 8 and Figure 9 , the receiver 174 has a generally circular cavity 176 having a keyway 178 that is offset from the cylindrical cavity 176 to align the connector 172. The receiver 174 includes a guide 175 located at an origin 202 that is configured to align the connector 172 of the patient support cover 12 when the connector 172 is engaged with the receiver 174. Figure 8 and Figure 9 , it can be seen that the receiver 174 includes four couplings 180, 182, 184, and 186 extending from a recessed surface 188. Each body of the couplings 180, 182, 184, and 186 is generally cylindrical, and each coupling has a respective longitudinal axis 190, 192, 194, and 196. Figure 8 As can be seen in FIG, couplers 180, 182, 184, and 186 are arranged such that line 188, perpendicular to and extending between each of axes 192, 196, defines a horizontal axis of a coordinate system 200 for positioning couplers 180, 182, 184, and 186. Similarly, line 198, perpendicular to and extending between each of axes 190, 194, forms the vertical axis of coordinate system 200. Vertical axis 198 and horizontal axis 188 of receiver 174 intersect to define an origin 202. Origin 202 of coordinate system 200 coincides with axis 204 of cylindrical cavity 176. Each of couplers 180, 182, 184, and 186 is positioned such that their axes 190, 192, 194, and 196 are positioned the same distance from origin 202. This provides a unique way to connect the connector 172 to the control box 18 , preventing other structures having a different function than the patient support cover 12 from being connected to the control box 18 .

[0055] refer to Figure 6 The user interface 106 allows the user to selectively control the operation of the system 10 by interacting with the touch screen display 208 to provide input to the UI, and thereby control the controller 102 via the communication line 206. The user interface 106 includes all functions required to interact with the user and provide appropriate instructions as messages to the controller 102. The controller 102 follows Figure 7The algorithm 210 shown in FIG. executes instructions. Algorithm 210 begins at step 212 when system 10 is powered on. Although system 10 includes instructions for detecting errors and confirming proper operation, once system 10 is detected to be operating properly, the user is prompted to enter the patient's weight according to the protocol, as shown in step 214. Once the patient's weight has been entered, the algorithm proceeds to step 216 and provides CLP to the patient. At step 218, the algorithm monitors user input. If user input is detected, the algorithm proceeds to step 220, where the user selects the function to be modified according to the protocol shown in step 220. Step 224 identifies the function of system 10 to be modified based on the user input. If the user selects to perform or modify CLRT at step 224, the protocol is initiated at step 226, allowing the user to select the parameters of the CLRT routine to be used. For example, the user can select the degree of patient rotation in the left and right directions, as a percentage of rotation. The hold time for each of the left, right, and center positions can also be set separately for each position. In some embodiments, the user can set the number of cycles to be completed or the total time for the CLRT run. The user can also stop CLRT treatment from the UI. Once started, CLRT treatment is provided at step 228, and the algorithm monitors the completion of the treatment. If the treatment is completed, the system 10 returns to providing continuous low pressure support at step 216.

[0056] Similarly, if the user selects rotation assistance at step 224, the parameters of the rotation assistance are set according to the protocol at step 232, and the rotation assistance is performed at step 234. After the completion of the rotation assistance function is detected at step 236, the system 10 returns to step 216 to provide continuous low-pressure support.

[0057] In some cases, the user may choose to change the pressure in the air cushion 34 at step 224. In this case, the pressure in the air cushion 34 is modified according to the protocol at step 238. The user may choose to deflate the cushion 34, modify the pressure at which continuous low-pressure therapy is provided, or, for example, may choose to fully inflate the air cushion 34 in an emergency situation. The updated pressure is provided according to the user-provided parameters at step 240, and the algorithm 210 monitors the completion of the pressure modification at step 242. If the modification is complete, as detected at step 242, the system returns to providing continuous low-pressure support at step 216.

[0058] While the present disclosure is directed to particular embodiments, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the subject matter set forth in the following claims.

Claims

1. A hose for a patient support cover comprising a pneumatically operated assembly, characterized in that The hose comprises: a plurality of independent flow paths connected to respective pneumatically controlled components to provide flow to the respective pneumatically controlled components, and a connector configured to connect to a connector of a control box for operating the pneumatically operated components of the patient support cover, the connector having a predetermined arrangement for engaging with a receiver to align a valve of a pneumatic circuit with the corresponding pneumatically controlled component of the patient support cover.

2. The hose according to claim 1, characterized in that The connector is configured to be received in the generally circular cavity of the receptacle.

3. The hose according to claim 1, characterized in that The connector includes a key configured to be received in a keyway of the receiver to align the receiver when the connector is connected to the receiver.

4. The hose according to claim 3, characterized in that The connector is configured to be engaged by a plurality of couplers extending from a recessed surface in the circular cavity of the receiver, each of which is engageable by a portion of the connector to form a flow path for each of the corresponding functions of the patient support cover.

5. The hose according to claim 4, characterized in that The plurality of couplers include an air cushion coupler, a moisture transfer cover coupler, a left-turn air bag coupler, and a right-turn air bag coupler.

6. The hose according to claim 5, characterized in that Each of the couplers has a cylindrical body defining a coupler axis, two of the couplers are vertically aligned such that a line connecting their axes defines a vertical axis of the receiver, two of the couplers are horizontally aligned such that a line connecting their axes defines a horizontal axis of the receiver, the vertical and horizontal axes of the receiver intersect to define an origin, wherein each of the couplers is positioned an equal distance from the origin.

7. The hose according to claim 6, characterized in that The connector is configured to engage the keyway of the receiver, and when the connector is engaged with the receiver, the connector of the patient support cover is aligned with the receiver by engagement with the keyway.

8. The hose according to claim 6, characterized in that The coupling of the vertical axis located above the origin provides flow to the air cushion.

9. The hose according to claim 6, characterized in that The coupling on the horizontal axis to the right of the origin provides flow to the moisture transfer cover.

10. The hose according to claim 6, characterized in that The coupler on the vertical axis below the origin provides flow to the right turning airbag.

11. The hose according to claim 6, characterized in that The coupler on the horizontal axis to the left of the origin provides flow for the left-turning airbag.

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