CN223262603U - Hose for a patient support cover including a pneumatically operated assembly - Google Patents

Abstract

The utility model discloses a hose for a patient support cover including a pneumatically operated component, the hose comprising: a plurality of independent flow paths, the plurality of independent flow paths being connected to corresponding pneumatically controlled components to provide flow to the corresponding pneumatically controlled components, and a connector, the connector being constructed as a connector connected to a control box, the control box being used to operate the pneumatically operated component of the patient support cover, the connector having a predetermined arrangement for engaging with the receiver to align the valve of the pneumatic circuit with the corresponding pneumatically controlled component of the patient support cover.

Description

Hose for patient support covering including pneumatically operated assembly

Cross Reference to Related Applications

This application claims priority from U.S. provisional application serial No. 63/080,353, filed on 9/18/2020, in accordance with 35u.s.c. ≡119 (e), the disclosure of which is expressly incorporated herein by reference.

Technical Field

The present disclosure relates to mattress covers for use in conjunction with patient support devices. More particularly, the present disclosure relates to a control unit and mattress cover that provides lateral rotation to a patient and moisture management to reduce moisture at the patient's skin.

Background

Patients confined to patient support devices (e.g., hospital beds) are at high risk of suffering from medical complications (e.g., pulmonary complications or chapped skin). This risk is exacerbated by excessive moisture on the skin of the user. One source of moisture is the user's own sweat. Because the patient is on the patient support apparatus for a long period of time, moisture can accumulate and, together with the heat of the patient's body, can have a deleterious effect on the patient's skin. This may lead to pressure ulcers, also known as bedsores, which may become infected. This damage is further exacerbated by the lack of movement of the patient.

Similarly, a patient who is not active may develop pulmonary complications due to being in a supine position on a hospital bed for a long period of time. Lack of movement by the patient also causes fluid to accumulate in the patient's lungs, increasing the likelihood of pneumonia.

In fully functional patient beds or similar patient support devices, various methods of addressing complications of patient inactivity have been implemented. While fully functional devices provide great benefits, in rural environments, fully functional devices are costly and difficult to deploy. Despite the various efforts made to address this gap, there is a continuing need to be able to deploy the most advanced technologies in a cost-effective manner in areas or situations where a fully functional hospital bed may not be available or suitable.

Disclosure of Invention

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

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

A plurality of independent flow paths connected to respective pneumatically controlled assemblies to provide flow thereto, and a connector configured to connect to a connector of a control box for operating the pneumatically operated assemblies of the patient support cover, the connector having a predetermined arrangement for engagement with a receiver to align a valve of a pneumatic circuit with the respective pneumatically controlled assemblies of the patient support cover.

The connector is configured to be received into a generally circular cavity of the receiver.

The connector includes a key configured to be received into a keyway of the receiver to align the receiver when the connector is connected to the receiver.

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

The plurality of couplers includes an air cushion coupler, a moisture transfer bed cover coupler, a left turn air bag coupler, and a right turn air bag coupler.

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

The connector is configured to engage with a keyway of the receiver, the connector of the patient support cover being aligned with the receiver by engagement with the keyway when the connector is engaged with the receiver.

The coupler located on a vertical axis above the origin provides flow to the air cushion.

The coupler on the horizontal axis to the right of the origin provides flow to the moisture transfer bed cover.

The coupler on the vertical axis below the origin provides flow to the right turn bladder.

The coupler on the horizontal axis to the left of the origin provides flow to the left turning balloon.

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 and secured to the mattress. The patient support cover includes a rotator, an air cushion, and a moisture transfer bedspread. The rotator is operable to laterally rotate a patient supported on the cover. The cushion is operable to support the patient with a sustained low pressure and to control the contact surface pressure applied to the patient's skin. The moisture transfer bed cover is operable to remove moisture from the patient's skin, thereby cooling and drying the patient's skin. The rotator is configured to be positioned over an existing mattress body, the air cushion is positioned over the rotator, and the moisture transfer mattress cover is positioned over the air cushion.

According to a second aspect of the present disclosure, a control box for operating a patient support covering includes a controller, a user interface, a gas 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 is in communication with the controller. The user interface includes a touch screen display that provides user-readable graphical data and provides dynamic inputs to be used by a user to provide control signals to the controller. The air source includes a driver in communication with and operating under the control of the controller to provide an air source to the components of the patient support cover. The pneumatic circuit includes a valve in communication with the controller. The pneumatic circuit defines the flow of air from the air source to the various components of the patient support cover under the control of the controller. The pressure sensor communicates with the controller and provides information regarding the operation of the patient support cover. The control box is operable to operate the moisture transfer mattress cover, the air cushion, and the rotator capable of providing bilateral rotation to a patient supported on the patient support cover.

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 from consideration of the following detailed description of various embodiments exemplifying the best mode of carrying out the embodiments as presently perceived.

Drawings

The detailed description makes reference in particular to the accompanying drawings wherein:

FIG. 1 is a perspective view of a portion of a patient bed supporting the system of the present disclosure, the system including a control box supported on the patient bed and a patient support cover supported on a mattress of the patient bed;

FIG. 2 is a schematic view of a cross section of a patient support cover positioned on a mattress;

FIG. 3 is a schematic view similar to FIG. 2, with the patient support cover shown in FIG. 3 in an exploded assembly;

FIG. 4 is a schematic top view of the cushion of the patient support covering of FIG. 1;

FIG. 5 is a top view of the patient support cover of FIG. 1, showing the shape of the turning balloon in phantom;

FIG. 6 is a block diagram of a control system of the system of FIG. 1;

FIG. 7 is a flow chart of a control algorithm of the system of FIG. 1;

FIG. 8 is a side view of a control box of the system of FIG. 1;

FIG. 9 is a partial isometric view of the control box of the system of FIG. 1, with the receiver enlarged to show the arrangement of the receiver, and

Fig. 10 is a schematic diagram of a pneumatic circuit of the system of fig. 1 engaged with a gas source and a patient support cover.

Detailed Description

Referring to fig. 1, a system 10 includes a patient support cover 12, the patient support cover 12 being 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 the 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 as will be described in further detail below. The control box 18 is configured to be supported on the patient bed 16, but the system 10 is independent of the underlying patient bed 16. This allows system 10 to be deployed on any patient support device, including a stretcher, home care bed, 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.

The system 10 includes the functionality required to provide therapeutic and prophylactic support to a patient positioned on the patient support cover 12. As will be discussed further below, the system 10 is configured to provide a sustained low pressure (CLP) support surface that is operable to provide sustained subsequent rotational treatment (CLRT). In addition, the system 10 includes a moisture transfer bed cover (MTC) operable to remove moisture (e.g., sweat) from the patient's skin to reduce the incidence of skin chapping that results in pressure ulcers, also known as bedsores, on the skin.

The operation of the system 10 may be best understood by first referring to the patient support cover 12. The patient support cover 12 is shown schematically in fig. 2 and in a schematic exploded view in fig. 3. The patient support cover 12 includes a lower cover 20, for example, the lower cover 20 having a lower surface 22 that covers a typical patient support structure (e.g., mattress 14). A pair of fabric flaps 24, 26 extend from the lower housing 20 and are configured to be wrapped under a mattress and sandwiched between the mattress and a support structure (e.g., a platform of the patient bed 16) under the mattress, for example. The weight of the mattress, patient support cover 12, and patient on patient support cover 12 is such that the flaps 24, 26 retain patient support cover 12 relative to the mattress even if the platform member of the patient bed 16 is moved.

A rotator 27 including a pair of rotating air bags 28, 30 is located on an upper surface 32 of the lower housing 20. The schematic view shown in fig. 2 begins at the foot end of the patient support covering 12 such that the right side thereof is to the left of the image of fig. 2 when the patient is lying in a supine position. Thus, the turning balloon 28 is referred to as a right turning balloon 28 because it is located to the right of the patient. Similarly, the turning balloon 30 is referred to as a left turning balloon 30. The turning bladders 28, 30 are positioned so that the respective sides of the patient are raised relative to the lower cover 20, and thus relative to the mattress or other structure supporting the patient support cover 12. The turning bladders 28, 30 are shown schematically in phantom in fig. 2 as inflated to illustrate the general shape of the turning bladders 28, 30 when inflated. The turning bladders 28, 30 are shown in phantom in fig. 5, with the turning bladders 28, 30 being mirror images, with the larger portion 68 being located near the head end 66 of the patient support cover 12 and the tapered portion 70 being located near the foot end 72 so that the patient's lower body does not turn as much as the patient's upper body when the turning bladders 28 or 30 are inflated.

Above the turning bladders 28, 30 is an air cushion 34, the air cushion 34 providing primary support for the patient. Although the cushion 34 is a single pneumatic volume, the cushion 34 is a complex structure that provides support for the patient and is configured as a number of interconnected chambers 40 that cooperate to distribute patient loads. Constructed from an upper sheet 36 and a lower sheet 38, which are ultrasonically welded around the perimeter and at several locations throughout the cushion to form a chamber 40. It should be appreciated that the mat 34 has a plurality of locations where the upper sheet 36 and the lower sheet 38 are welded together. Referring to FIG. 4, a schematic view of the cushion 34 is shown. The chambers 40 are all interconnected to allow fluid to flow in the chambers 40 of the cushion 34. However, by welding the sheets 36, 38 together, a seam 42 is created at each location. The seams 42 cooperate to reduce the support area of any given chamber 40 so that the cushion 34 operates as if the chamber 40 were a separate cushion. In some positions 44, the slit 42 is cut to create slits 43 to allow adjacent chambers 40 some freedom of movement relative to each other. This approach provides an inexpensive method of constructing the mat 34 while yielding properties that mimic more complex structures.

Above the cushion 34 is a bed cover 50, the bed cover 50 functioning as a moisture transfer bed cover 50 to remove moisture generated beneath the patient from the patient's skin and out of the moisture transfer bed cover 50. The moisture-transfer bed cover 50 includes five layers including an upper layer 52 and a lower layer 54 that are joined together about a perimeter. The upper layer 52 has an upper surface 56 that supports the patient. In some cases, a sheet or other bedding article may be located above the upper surface 56. The upper layer 52 is configured to allow moisture, in particular moisture vapor, to be transferred through the upper layer 52 into the chamber 58 of the moisture transfer bedspread 50. The lower layer 54 is secured to the upper layer 52 and they cooperate to define a chamber 58. The lower layer 54 is impermeable to steam such that any moisture transferred into the chamber 58 is prevented from transferring through the lower layer 54.

Contained within the chamber 58 is a three-dimensional spacer fabric 60, the three-dimensional spacer fabric 60 being resistant to wrinkling and allowing air to flow through the fibers of the spacer fabric 60 while still supporting patient loads. In addition, the spacer fabric is enclosed in a nonwoven fabric having an upper layer 62 and a lower layer 64, the upper layer 62 and lower layer 64 being secured together about their perimeter. The nonwoven fabric allows free flow of air and steam moisture while still providing a shell for the spacer fabric 60.

In use, the air flow is introduced into the chamber 58 near the foot end of the moisture-transfer bed cover 50 and flows longitudinally from the foot end of the moisture-transfer bed cover 50 to the head end of the moisture-transfer bed cover 50, where the air flow is discharged from the moisture-transfer bed cover 50. Accordingly, moisture transferred from the patient's skin into the chamber 58 is then expelled from the moisture-transfer bed cover 50 at the opening 74 schematically shown in fig. 5.

Referring now to FIG. 6, a block diagram of a control system 100 of the system 10 is shown, the control system 100 including a controller 102, a gas source 103, a pneumatic circuit 104, a user interface 106, and a plurality of sensors 108. The control system 100 also includes a power supply 110 and a data port 112, the data port 112 illustratively embodied as a USB data port. The controller 102 includes a microprocessor 114 and a storage device 116 that includes instructions that, when executed by the microprocessor 114, control the operation of the control system components. Similarly, the user interface 106 also includes a microprocessor 118 and a storage device 120, the storage device 120 including instructions that, when executed by the microprocessor 118, control the operation of the user interface 106 and communication between the user interface 106 and the controller 102.

Referring to fig. 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 the 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.

The pneumatic circuit 104 includes four valves 140, 142, 144, and 146, each of which is associated with a particular function of the patient support cover 12. Valve 140 is a bi-directional valve and is connected to manifold 148, with manifold 148 being connected to blower outlet 132 such that when blower 103 is operated with valve 140 open, pressurized air in manifold 148 may be allowed to be directed to cushion 34. As will be discussed further below, in some cases, air may be allowed to escape from the cushion 34.

Valve 142 is also a two-way valve and is connected to manifold 148. The valve 142 is also connected to the chamber 58 of the moisture-transferring bed cover 50 such that when pressurized air is fed to the manifold 148 and the valve 142 is opened, pressurized air from the blower 103 is fed to the chamber 58 of the moisture-transferring bed cover 50.

The valve 144 and the valve 146 are three-way valves, respectively, associated with the right turning bladder 28 and the left turning bladder 30, respectively. Valve 144 and valve 146 are three-way valves to allow the rotary air bag 28 and rotary air bag 30 to be evacuated of air therein by blower 103 under vacuum. Each of the valves 144, 146 is connected to a secondary manifold 150, the secondary manifold 150 being connected to the manifold 148 to allow pressurized air in the manifold 148 to pass through the manifold 150 and be selectively directed into a respective one of the rotary air bladder 28 or the rotary air bladder 30. Manifold 150 includes a non-powered check valve 151, non-powered check valve 151 preventing backflow from rotary bladder 28 and rotary bladder 30 from being diverted into manifold 148. The valve 144 and the valve 146 are movable between three positions, including 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 the manifold 148 and the manifold 150, through the corresponding valve 144 or valve 146, and into the corresponding rotary bladder 28 or rotary bladder 30. When one of the valves 144 or 146 is in the vacuum position, the respective valve 144 or 146 connects the respective bladder 28 or bladder 30 to the manifold 152, and the manifold 152 is connected to the blower inlet 130 such that the blower 103 draws air from the respective bladder 28 or bladder 30 to rapidly deflate the bladder 28 or bladder 30. The dynamic deflation of the rotating air bag 28 and the rotating air bag 30 improves the performance of the CLRT function compared to simply allowing air to vent from the air bag 28 or the air bag 30 to the atmosphere through the moisture transfer bed cover 50.

However, the venting of the cushion 34 is accomplished by suspending the blower 103 (so that the manifold 148 does not pressurize) and opening the valve 140 (so that air may enter the manifold 148). At the same time, valve 142 is opened to allow air in cushion 34 to move through manifold 148 and valve 142 to moisture-transfer bed cover 50. This is an efficient and effective way of arranging the pneumatic circuit 104, since the need to deflate the air cushion 34 is an unusual event, and this way limits the need for additional valving in order to achieve venting of the air cushion 34.

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

As shown in fig. 5, each of the air bags 28, 30 and the air cushion 34 has a respective pressure sensing tube 153, 154 or 156, the pressure sensing tube 153, 154 or 156 being connected to a respective pressure sensor 158, 160 or 162. The pressure sensor 158, 160, or 162 provides a signal to the controller 102 indicative of the pressure in the respective air volume 28, 30, 34 such that the controller 102 may control the operation of the blower 103 and the respective valve 144, 146, or 140 to control the flow of air into and out of the air bag 28 or air bag 30 and air cushion 34.

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 may be compared to the pressure in any of the bladders 28, 30, or the cushion 34 to determine whether the system 10 is operating as intended. In some embodiments, pressure sensor 164 may be omitted and controller 102 may rely solely on signals from pressure sensors 158, 160, and 162. In other embodiments, pressure sensors 158, 160, and 162 may be omitted and pressure signals from pressure sensor 164 may be used to evaluate the pressure in the respective bladder 28, bladder 30, or cushion 34. The pressure sensor 164 may also be used to determine whether flow through the moisture transfer bed cover 50 is appropriate by determining whether there is an unexpected pressure rise.

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

In some embodiments, the cushion 34 may be partitioned, such as a head region, a base region, and a foot region. In this case, the operation of the valve 140 and sensor 162 may be replicated for each zone and the zones controlled in a manner similar to the operation and pressure control in the air cushion 34 described above.

As shown in fig. 1, the control box 18 is connected to the patient support cover 12 by a conduit assembly 170, the conduit assembly 170 having a connector 172, the connector 172 engaging with 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 fig. 6, the receiver 174 has a predetermined arrangement that mates with the connector 172 to ensure proper corresponding functional mating of the valves 140, 142, 144 and 146 with the patient support cover 12.

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

Referring to FIG. 6, the user interface 106 allows a 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 the functionality required to interact with the user and provides the appropriate instructions as a message to the controller 102. The controller 102 executes instructions according to the algorithm 210 shown in fig. 7. Algorithm 210 begins at step 212 when system 10 is powered on. Although the system 10 includes instructions for detecting errors and confirming proper operation, once the system 10 is detected to be functioning properly, the user is prompted to enter patient weight according to a protocol, as shown at step 214. Once the patient weight is entered, the algorithm proceeds to step 216 and provides CLP to the patient. The algorithm monitors for user input at step 218 and if user input is detected, the algorithm proceeds to step 220 where the user selects the function to be modified according to the protocol represented in step 220. Step 224 identifies the function of system 10 to be modified based on the user input. If the user chooses to make or modify the CLRT at step 224, the protocol is started at step 226 so that the user can select parameters of the CLRT routine to be used. For example, the user may select the degree of rotation of the patient in the left and right directions, respectively, as a percentage of rotation. The holding time in each of the left-hand rotation, the right-hand rotation, and the center position may also be set for each position, respectively. In some embodiments, the user may set the number of cycles to complete or the total time of CLRT operation. The user may also stop CLRT treatment from the UI. Once initiated, CLRT therapy is provided at step 228 and the algorithm monitors the completion of the therapy. If the treatment is complete, the system 10 returns to providing continuous low pressure support at step 216.

Similarly, if the user selects rotation assistance at step 224, parameters for rotation assistance are set according to the protocol at step 232 and rotation assistance is performed at step 234. Upon detecting completion of the rotation assist function at step 236, the system 10 returns to providing continuous low pressure support at step 216.

In some cases, the user may choose to alter the pressure in the cushion 34 at step 224. In this case, the pressure in the cushion 34 is modified according to the protocol at step 238. The user may choose to deflate the cushion 34, modify the pressure that provides the sustained low pressure therapy, or may choose to perform maximum inflation of the cushion 34 in an emergency, for example. The updated pressure is provided at step 240 based on the user provided parameters and the algorithm 210 monitors for 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.

Although the present disclosure has been directed to particular embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the subject matter set forth in the following claims.

Claims (11)

1. A hose for a patient support cover comprising a pneumatically operated assembly, the hose comprising:

A plurality of independent flow paths connected to respective pneumatically controlled assemblies to provide flow thereto, and

A connector configured to connect to a connector of a control box for operating the pneumatically operated component of the patient support cover, the connector having a predetermined arrangement for engagement 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 of claim 1, wherein the connector is configured to be received into a generally circular cavity of the receiver.

3. The hose of claim 1, wherein the connector includes a key configured to be received into a keyway of the receiver to align the receiver when the connector is connected to the receiver.

4. A hose according to claim 3, wherein the connector is configured to be engaged by a plurality of couplings extending from a recessed surface in the circular cavity of the receiver, each of the couplings being engageable by a portion of the connector to form a flow path for each of the respective functions of the patient support cover.

5. The hose of claim 4, wherein the plurality of couplers includes an air cushion coupler, a moisture transfer bed cover coupler, a left turn air bag coupler, and a right turn air bag coupler.

6. The hose of claim 5, wherein each of the couplings has a cylindrical body defining a coupling axis, two of the couplings being vertically aligned such that a line connecting their axes defines a vertical axis of the receptacle, two of the couplings being horizontally aligned such that a line connecting their axes defines a horizontal axis of the receptacle, the vertical and horizontal axes of the receptacle intersecting to define an origin, wherein each of the couplings is positioned an equal distance from the origin.

7. The hose of claim 6, wherein the connector is configured to engage with a keyway of the receiver, the connector of the patient support cover being aligned with the receiver by engagement with the keyway when the connector is engaged with the receiver.

8. The hose of claim 6, wherein the coupler located on a vertical axis above the origin provides flow to the air cushion.

9. The hose of claim 6 wherein the coupler on the horizontal axis to the right of the origin provides flow to the moisture transfer bed cover.

10. The hose of claim 6 wherein the coupler on the vertical axis below the origin provides flow to the right turn bladder.

11. The hose of claim 6 wherein the coupler on the horizontal axis to the left of the origin provides flow to the left turn bladder.