JPS63183056A - Fluid bed for hospital - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a hospital fluid bed with an air bag for the care and relaxation of a patient. For more details,
This invention relates to a safe hospital fluid bed that can comfortably support a patient and provide nursing care even in an emergency.

BACKGROUND OF THE INVENTION Hospital fluid beds have long been used to care for patients. For example, a hospital fluid bed provides a great benefit to patients in dealing with injuries caused by pressure during skin h1 transplant surgery, that is, pressure sores. However, these fluidic beds also have a number of significant drawbacks, which are a problem in hospitals, nursing homes, and other facilities. For example, in order to ensure patient comfort and safety, it is imperative that the airbag supporting the patient is always inflated. If the power system fails or the air supply is not working properly, the air bags in the hospital fluid bed supporting the patient can quickly deflate, causing serious injury to the patient, or at least a loss of recovery. This will worsen the condition of the patient on the way.

Therefore, a system is provided that can maintain a hospital fluid bed in an inflated state at all times, even in the event of a failure of the electrical power system or failure of the mechanical or electrical system of the air supply system. It is desirable that

Another disadvantage of hospital fluid beds is that the fluid bed airbag is extremely soft, and the fabric material that forms the fluid bed airbag wraps around the patient, making it difficult for the surrounding air to reach the desired areas of the patient's body. The problem is that they no longer do it. As a result, the patient tends to sweat significantly in this encased area. If the state of excessive sweating continues, the patient's skin h1 will be exposed to excessive moisture for a long time, resulting in discomfort for the patient and also delaying the patient's recovery. Additionally, due to the airbag envelopment described above, the patient's shoulders are pulled together, placing the patient in an extremely uncomfortable position and causing spinal trauma. Thus, minimizing the occurrence of patient envelopment, thereby preventing excessive moisture from sweating, and
It is desirable to provide a hospital fluid bed with an air bag that can prevent spinal trauma. It is also desirable to be able to supply air immediately below the patient to remove moisture, and to provide heating and cooling as needed to optimally care for the patient.

Other shortcomings in conventional hospital fluid bed systems occur in emergency situations, such as cardiac arrest. When cardiac arrest occurs, it is often necessary for nurses to perform cardiopulmonary resuscitation (CPR). Such resuscitation work cannot be effectively performed on a soft platform such as a hospital fluid bed. In such cases, move the patient quickly to the floor or a stable table.
Be able to perform CPR. However, vIJgI, which joins the patient by moving the patient quickly,
Unfavorable for patient safety and health.

Existing fluid bed systems are extremely time consuming to convert into a stable platform. In some of these conventional systems, the blower must be turned off and the air supply hose must be disconnected from the air supply manifold before the air bag can be deflated. Therefore, the air in the airbag can be quickly handled and selectively controlled by the nurse to turn the fluid bed into a stable platform without removing the patient from the bed, minimizing the impact on the patient. It would be desirable to provide a hospital fluid bed that allows for

(Summary of the Invention) A hospital fluid bed according to the present invention has a frame made of a patient support member in the shape of a flat plate.

This patient support member has an electrically driven screw t7.
Its position can be adjusted using a lever mechanism, etc., allowing it to support the patient in various positions. If necessary, the planar members constituting the patient support member can be placed coplanar to support the patient without lifting the patient's head or knees. When the bed is thus flattened, this flattened portion of the fluid bed provides a stable platform;
Even during emergency CPR operations, air can be released quickly and in a controlled manner from multiple airbags, allowing the patient to be supported in a comfortable manner. The air bag is
It is made of a flexible material that is impermeable to liquids, solids, and air. The airbags form groups that fit the patient's body and Fk! and inflated by an air supply device. This air supply device is electrically driven and is equipped with a backup air supply device. The air supply device is coupled to each group of airbags in a way that allows each group of airbags to inflate to the pressure required to properly support a particular area of the patient. It has been devised. Additionally, the airbag pressure can be adjusted to suit the patient's needs and comfort. In the case of CPR operations or other such emergencies, the air supply system can be selectively controlled to bleed air from all airbags for a predetermined period of time and to remove air from the coplanar support portion of the bed. The patient is quickly lowered onto the flat support formed by the At the same time, regardless of the relative position of the patient support, the patient support is automatically set to a flat state when performing such emergency operations.

Each air bag of the hospital fluid bed is provided with one air inlet opening connected to an air distribution manifold. The air distribution manifold is connected to the air supply via a pressure control valve. A number of pinholes are provided in the top of each airbag, just above the gap formed by adjacent airbags, to supply air to the patient. By appropriately adjusting the pressure control valves, each group of airbags or each section of the fluid bed can be set at the appropriate pressure to effectively and efficiently support and provide comfort to the patient.

Both in the longitudinal and lateral directions, each airbag has a convex upper surface, and a ridge approximately equal in size to the patient's body is formed in the longitudinal center of the bed to control the support of the patient. When a patient rests on this ridge, the convex portion of the airbag is pressed down by the patient's weight and becomes almost flat. With this structure, the patient will not be engulfed by the airbag material. In this way, contact between the patient's body and the airbag is minimized, making it possible to effectively remove moisture that is harmful to the patient's recovery.

The power supply used in hospital fluid bed systems is supplied from the AC (alternating current) power supply of the hospital's electrical equipment. moreover,
The backup battery power source is numbered,
The fluid bed and patient can be moved. This DC battery power source is converted to AC power and then used to drive the air converter. A battery-powered backup system is approximately 2
The fluid bed airbag can be kept inflated for a period of time. This two hour period is practically sufficient for any type of movement, such as moving beds and patients from room to room within a hospital or between hospitals.

When a patient is moved from a lying position to an upright position, the patient's weight is concentrated in the pelvis. in this case,
The air supply system automatically increases the pressure of the airbag located at the pelvis to prevent the patient from sinking too deeply into the top of the bed. From these characteristics,
By providing an articulation mechanism in the patient support member of the fluid bed, it is possible to prevent the patient from being wrapped too much even when sitting in the bed.

(Example) Embodiments of the present invention will be described below based on the drawings.

The hospital fluid bed 10 in FIGS. 1 and 2 includes:
It has an F section frame 12. A pivotable wheel assembly 14 is provided on the lower frame 12 to movably support the fluid bed 10. The fluid bed 10 further includes an upper frame 16 which supports a plurality of patient support members 18, 20, 22, 24, which are typically planar in shape.

The upper frame 16 has a powered toggle mechanism 26°28
It is movably connected to the lower frame 12 by. The provision of the toggle mechanisms 26 and 28 allows the upper frame 16 to be raised and lowered relative to the lower frame 12 to properly lift the fluid bed 10 and the patient and provide proper nursing care while keeping the patient comfortable. becomes easier.

Patient support member 18.20.22.24 of fluid bed 10
are respectively adjacent patient support members 18°20.22.
24 by an articulating mechanism so that it can be moved from a lying position to an upright position if necessary to lift the patient's head or limbs or to help the patient relax. It has become. The articulation mechanism of the patient support members 18.20, 22.24 consists of an electrically driven screw jack. This screw jack joint mechanism 6 is also used in the toggle mechanism 26, 28 for raising and lowering the fluid bed 10.

To comfortably support the patient, patient support member 18.
A plurality of substantially identical airbags 30 are fixed to each of the airbags 20, 22, and 24.

The airbags 30 are arranged side by side in such a manner that they are in contact with each other. Further, the air bag 30 is made of a soft, airtight material such as nylon fiber, and is heat-sealed. These airbag materials are also impermeable to liquids and solids. As can be seen from FIGS. 2 and 4 and the to-scale drawing in FIG. 3, each airbag 30 forms an upper surface 32 that is convex in both the longitudinal and lateral directions. .

3 shows the convex shape of the upper surface of the airbag 30, while the cross-sectional view of FIG. 4 shows the lateral convex shape of the upper surface 32.

As can be seen from the end view of FIG. 2, the vertical convex shape of the airbag 30 is formed by a central portion 34 which is flat but convex at the beginning. The width of this central portion 34 is approximately equal to the width of the patient's shoulders and hips. From the center 34 of the upper surface 32 of the airbag 30,
Extending is a downwardly inclined ramp 36,38. Slope 3
6.38 is from the center 34 of the airbag 30 to the end surface 4
0.42. To form the airbag, the flexible impermeable mtnx material is layered and sewn or secured along the side seam 44J3 and the top seam 45 with a suitable square stitch. Each end face 40, 42 of airbag 30 extends upwardly to form a generally triangular shaped connection 46,48. Each of the connections 46, 48 is provided with a snap connector 50. This snap connector 50 is received by a suitable snap connector on each patient support member 18.20.22.24. A plurality of outlet openings 52 are provided on one or both sides of each air bag 30 to supply air from each air bag 30 to the upper portion of the patient bed formed by the multiple air bags 30. This outflow opening consists of a pin ball 54 disposed within the impermeable material forming the air bag 30. Depending on the number and size of the pinholes 54 and the pressure of the air within the air bag 30, The hl of air flowing from the air bag 30 to the upper surface of the fluid bed 10 is determined.
They are arranged in a horizontal line at a position slightly on the π side from the upper surface of the airbag 30 and just above the crack formed by the adjacent airbags 30. When the airbags 30 are arranged in contact with each other, the air flows through the pinholes 50 located just above the cracks between the airbags 30.
The liquid leaks and flows slowly upwards towards Ia M's body without creating a jet stream.

Each patient support member 18.20, 22.24 is provided with a respective air distribution manifold.

Additionally, there is a primary air supply manifold consisting of a tubular member. The tubular member may be an elongated cylindrical tubular member as shown in the drawings, or may be of other conventional shape without departing from the spirit and scope of the invention. Main air supply manifold 5
6 is closed at both ends by end walls.

The air intake port of the air supply manifold 56 is 1
There are two air inflow openings 58. The air inflow opening 58 has a connector protrusion 60 that receives a flexible air supply Ij pipe 62.

The air supply manifold 56 includes a plurality of inlet connectors 6 for introducing air into the air bag 30.
4 is provided. Patient support members 18.20, 22.
One inlet connector 64 is assigned to each of the twenty-four airbags 30. Figures 4 and F
As shown at 1'l, each bottom surface 66 of the airbag 30 is formed with an inlet opening into which a portion of the inlet connector extends. One of the vertical inlet connectors 64 is provided with a retaining seal member 68 for maintaining airtightness by friction. Airtightness is maintained by an O-ring held in a groove formed on the periphery of the holding seal member. In this way, it can be seen that each air bag 30 has one air inflow opening, but is not provided with an air outflow/mouth portion of the same size. Air outflow is for each air bag 30
This is done only through the pinhole 54 provided in the side wall of the .

The pinholes 54 may be provided on both sides of the airbag 30, if necessary, or only on one side. In either case, the location of the air outflow opening provided in the side wall of the airbag 30 is such that the release of air from the airbag is within a crack formed in a portion where the airbag 30 is adjacent to the airbag. 30 is set to be performed immediately above the part in contact. In this way, the air is released at or near the top of the air bag, and the air is distributed gently and evenly to the underside of the patient. As a result,
Moisture caused by sweating and the like can be easily removed, and the air can be heated or cooled as needed, making it easier for the patient to breathe and for necessary medical treatment to be performed more easily.

The convex top surface of the airbag is selectively raised in the center to form a longitudinal ridge to support the patient on the hospital fluid bed. This centrally formed ridge has a width approximately equal to the patient's shoulders and hips. When a patient lies on the fluid bed, their weight compresses the elongated ridges, effectively turning the fluid bed into a flat plate. Therefore,
The upper surface of the airbag does not wrap around the patient's body, nor does the airbag compress the patient.

FIG. 6 shows the fluid bed lifting and toggle mechanisms in elevation. The generally rectangular lower frame 12 includes a pair of intermediate transverse members 70, 72.
is provided. The transverse member 70.72 has a main link clevis 74.76 connected thereto. Main link clevises 74.76 are pivotally connected to main link arms/8, 80, and main link arms 78.80 are pivotally connected to angled main link arms 82.84.

The other end of the main link arm 82.84 is attached to the transverse member 9
It is connected to a clevis 86.88 extending from 0.92. The transverse members 90 , 92 form part of the structure of the upper frame 16 . Lower main link arm 78
．． A lower tie arm 94,96 is pivotally connected in the middle of 80. Additionally, an upper tie arm 98.100 is provided, one end of which is pivotally connected to the lower tie arm 94.96, and the other end of which is pivotally connected to the middle of the upper main link arm 82.84. ing. A cam roller bearing 102, 104 is provided at the lower end of each lower tie arm 94, 96.
is Laura Sabote.

The rack member 108 is received within a recessed cam slot 106 . [1-La support track member on the right side of the drawing is not shown for simplicity. Another clevis 110 (one of which is shown in the figure) extends from the transverse member 92 and pivots an upper link arm 112 on the fluid bed foot, depicted on the right side of the figure. possible to connect. An F section link arm 114 is provided on the left side of the drawing, that is, at the head of the fluid bed 10, and an upper link arm 116 is pivotally connected to one end of the lower link arm 114. At the head and legs of the upper frame, tie bar members 118
．． 120 is the upper link arm 112.116! iA acts to articulate the head and legs of the patient support member 18, 20.22° 24 located immediately above the upper frame 16. At the top of the fluid bed 10, the other end of the lower link arm 114 is pivotally connected to a clevis 122 extending from a transverse member 124. An actuator clevis 126 is also provided at the top of the upper frame 16, and a suitable actuator with a motor is connected to a toggle mechanism for raising and lowering the upper frame 16 and the fluid bed 10.

A motorized actuator, such as an electrically driven screw shirt 1, is pivotally connected to the clevis 126, and the end of the rond is connected to the clevis 128 extending from the tie bar member 118.

On the opposite side or head of the fluid bed 10, as shown, an actuator clevis 130 is attached to the transverse member 1.
It is connected to 32. A suitable drive mechanism is provided in actuator clevis 130, such as an electrically driven threaded screw assembly. The ends of the rods are received in clevises 134 that extend from the lateral tie bar members 120 in the fluid bed legs.

7 and 8 show end views of the fluid bed 10. FIG. 7 is a top view of the fluid bed 10 shown on the left side of FIG. FIG. 8 shows the right end or foot of the fluid bed 10. Figures 7 and 8
The fluid bed 1o in the figure is shown partially cut away.
Various clevises are shown that connect the lifting connecting members of the fluid bed 10 and the connecting members for operating the head and legs of the fluid bed 10. These clevises provide an articulation mechanism for the patient support members 18, 20, 22, 24 of the fluid bed 10.

Extending from the transverse member 70.72 are actuator clevises 136, 138 for driving the toggle mechanism 26.28 of the fluid bed 10. As represented by dashed lines in the drawings, the corresponding /cut unitary member 140.14
1 extend from the main lintage typers 142,144. A drive mechanism using an electrically driven screw jack or other suitable device is coupled between each pair of actuator clevises to provide a toggle mechanism 26.2.
8 is operated by a power drive to raise and lower the upper frame 16 relative to the lower frame 12.

A schematic diagram of the electrical and pneumatic circuits of a hospital fluid bed is shown in FIG. At the bottom of the drawing, various airbags 30 used in the fluid bed 10 are depicted, with connection B representing the air supply to the movable head support. Connection C represents the air supply to the airbag located at the fixed hip support of the fluid bed 10, and connection C represents the air supply to the shoulder portion of the fluid bed 10. Connections E and F are for air connections located at the calves and feet of the fluid bed 10.
- Indicates the air supply to the bag respectively. These parts correspond to the articulating patient support members 18.20, 22.24 shown in FIGS. 1 and 9.

It is desirable that pressure can be applied and controlled independently to each part of the airbag. For this reason, the idle circuit 2
50 is adapted to cooperate with manifold 252. Manifold 252 is formed from vinyl chloride pipe and is closed at both ends. Manifold 252 has six air supply connections, labeled A through 1' and 2 in the drawings. These connections A-F provide outlets for conducting compressed air from the manifold to each group of airbags. Manifold 252 is provided with a pair of inlet openings 254,256.

Each inlet opening 254,256 has an air supply line 258
．． 260, and this air supply line 25
8,260 is each outflow boat 2 of the main air supply blower 266 and the backup air supply blower 268
It communicates with 62,264. Air supply blower 266
．． 268 is driven by power from a suitable AC power source 270 or by power supplied from a standby power source 272 and converted to AC by a DC/AC converter 274. The battery power source 272 can be used as an auxiliary power source in the event of a power equipment failure; however, most hospitals are equipped with auxiliary power sources that are activated immediately in the event of a power equipment failure; No particular power supply is required.

However, the battery charger m272 is mainly used when moving the fluid bed 10 to another location within the hospital or between hospitals.

Air supply blowers 266, 268 have a long life, 25.
Since it can be used for about 1,000 hours, it is extremely Ishikawa. For some reason the main air supply blower 2
66 fails, this failure is electrically sensed and the backup air supply blower 268 is automatically activated.

The conduits t'a 276 are inlet pipes for drawing air from the atmosphere into each inlet boat 278, 280 of the air supply blowers 266, 268. Therefore, the air supply blower 26
6. When either of 268 is driven, sufficient R air is supplied to the air supply manifold 252,
All airbags 30 are each inflated to the required pressure.

There are a number of air supply lines extending from connections A-F of the manifold 252 to each group of air bags 30 provided in each portion of the hospital fluid bed 10. The air supply line 282 is connected to the manifold 2
52 to a group b of airbags provided at the head of the fluid bed. The pressure of the air bag provided at the head of the fluid bed is variably controlled by operating the control valve 284.

Muffler 286 installed in air supply line 282
This reduces the sound of the air supplied to group b of the airbag. In a similar manner, air supply line 288 supplies air at a pressure controlled by control valve 290 to air bag group a located at the buttock of fluid bed 10.

Transport to C. A muffler 292 is provided in the air supply line 288. Another air supply line 294 whose pressure is controlled by a control valve 296 is connected to the buttock air supply line 288 by means of a T-joint 298 or the like.
is connected to. A solenoid valve 300 is provided in the air supply line 294. The solenoid valve 300 is a shutoff valve that is electrically controlled to control communication between the air supply line 294 and the air supply line 288.

When the patient is in a lying position, some of the weight of the patient's buttocks is transferred to the airbag of the fluid bed. Control valve 290 appropriately regulates this pressure on the patient's buttocks in a lying position. When the patient lifts his/her head and body and is in a more upright position, the weight of the head and torso is applied to the patient's buttocks, thereby increasing the weight of the patient's buttocks. Air supply line 294 is optimally routed for a seated patient to prevent the patient from sinking too deeply into the fluid bed and becoming encased, and to make the seated patient more comfortable. Compressed air is supplied. Therefore, when the solenoid valve 300 is operated to establish communication between the air supply line 294 and the air supply line 288, by setting the control valve 296, the air with increased pressure is supplied to the fluid bed 1.
0 to the airbag located in the buttocks. Furthermore, when the head of the fluid bed 10 is lifted to a certain height,
Because the solenoid valve 300 is automatically actuated, no adjustments need to be made to properly support the patient whether the patient is lying down or sitting.

When the fluid bed 10 is further laid down, the solenoid valve 300 is deactivated, or vice versa, and the air supply lines 294, 288 are disconnected. Thereafter, the airbag pressure at the buttock reaches equilibrium based on the control valve 290 settings.

Once the patient has recovered enough to begin walking and other movements,
The patient is first allowed to put his or her feet on the floor and sit next to the hospital bed. When using air bag type hospital beds, sitting on the side of the bed in this manner is difficult or even dangerous due to the unstable support provided by the air bag. Accordingly, in the hospital fluid bed according to the present invention, air is selectively evacuated from an air bag located at the buttocks of the bed, and a seated patient is lowered onto a stable platform provided by the buttocks of the patient support member. It looks like this. When air is released from the airbag, the airbags on both sides of the buttocks are folded and provide armrest-type support on both sides of the patient. By inflating the airbags on both sides, the patient is stabilized so as not to fall sideways, and also acts as an armrest, allowing the patient to move or exercise as desired while using the 114. You will also be able to stabilize your body. Solenoid valve 301 is a vent valve that can be selectively controlled to stop air being supplied to the buttock air bag or to remove air from the air bag.

All other airbags are left fully inflated.

The airbag located at the shoulder part of the fluid bed 10 is
It is controlled by air supplied from an air supply line 302. The pressure of the air supply line 302 is controlled by a control valve 304. The air supply line 302 has a muffler 306 in a position before it enters the air bag group d in the shoulder area of the fluid bed 10.
is installed to reduce air noise.

) L11-like air supply fins 308 are connected to connection E of manifold 252 and supply air via muffler 312 to group e of air bags of the fluid bed. The pressure in the air supply line 308 is controlled by a control valve 310. An air supply line 314 for supplying compressed air to the air bags located at the foot of the fluid bed 10 is also connected to the air supply manifold 252. The air supply line 314 is provided with a pressure control valve 316 and a muffler 318 for reducing air noise.

Each control valve in each part of the air supply system to fluid bed 10 is independently set to the desired pressure. When the air pressure is restored at the 11th time when all airbags are activated, each section of the fluid bed 10 is automatically set to a preset pressure by the control valve. Therefore, the control valve should be placed in an enclosure that is inaccessible to the general public. The air bag reporting system of fluid bed 10 may be set by a skilled person to the appropriate pressure for a particular patient. The hospital fluid bed according to the present invention can be used appropriately for people of various heights and weights.

Air supply lines 258,260 are also provided with main control valves 320,322.

The main control valve 320 is the control valve 284, 290.3
04,310 can be adjusted independently to simultaneously reduce the pressure of airbag groups b-f in each section. Pressure sections such as those described above may be temporarily necessary or desirable in the care or treatment of a particular patient. Thereafter, the main control valve 320.3
22 is fully opened and returned to the preset pressure by the control valve. The T-7-bag returns to the preset pressure simply by opening the main control valve 320.322. The main control valves 320, 322 are configured to support the weight of the patient. For example, 160 bond (
The pressure required to support and keep a 72,6 to 9) patient comfortable is different from the pressure required for a 300 Bond (136 Ky) patient. fluid bed 1
The pressure adjustments required when the 0 is used by patients of different weights can be accomplished simply by a valve in the line of the operating air supply blower.

In some cases, all airbags of the hospital fluid bed are simultaneously evacuated and the patient is lowered onto a flat patient support formed by articulated patient support members 18.20.22.24. There is a need. for example,
To perform cardiopulmonary resuscitation (CPR), it is desirable to place the patient on a stable surface, such as a patient support, with the air bag completely deflated. Therefore, the air supply manifold 252 is provided with a vent valve 324, which is a solenoid valve that can be controlled by a switch in an electrical circuit. This switch is installed in a place where the nurse can easily reach it, and when the switch is turned on, the ventilation valve 324 is set to a position to vent the air supply manifold 252. At the same time, this switch turns off the blower circuit. When the air supply is turned off and the vent valve 324 is turned on, air from the air bag returns to the manifold 252 and is evacuated by selectively manipulating the vent valve 324. In this way, all airbags are activated at the same time for a predetermined period of time, i.e. 5
The air is evacuated for ~10 seconds and the patient is quickly and safely lowered onto a stable platform provided by the patient support member 18°20.22.24. At the same time, ventilation valve 3
24 drives the patient support member 18 of the hospital fluid bed.
An electrical circuit controls the positioning of the articulation mechanisms provided at 20, 22, and 24, and the members are quickly moved to a horizontal coplanar state.

The backup air supply blower 268 is electrically connected to the circuit of the main air supply blower 266, and if the air supply blower 266 fails, the backup air supply blower 268 is connected to the AC power supply or
It is designed to be driven by a C/A C power source. A pressure sensor 326 is provided that communicates with the discharge path of the main air supply blower 266, and if the main air supply blower 266 breaks down, it immediately sends an electrical signal to the circuit of the backup air supply blower 268, and the backup air supply blower 268 is immediately activated. The air supply blower 268 is activated. This mechanism allows for a constant supply of compressed air, allowing the main air supply blower 266
Even if the fluid bed 10 fails, the fluid bed 10 can be maintained in an inflated state.

However, the electrical equipment for driving the air supply blower 266 and the backup air supply blower 268 has a long lifespan and can be used for about 25,000 hours. Air supply blower 266 and backup air supply blower 2
It is extremely rare for all 68 to fail at the same time.

The above-described embodiments are merely illustrative of the invention and are not intended to limit it. Accordingly, the hospital fluid bed according to the invention may be implemented in any form without departing from the spirit and scope of the invention.

[Brief explanation of the drawing]

The figures show an embodiment of a hospital fluid bed based on the present invention, and FIG. 1 is a side view of the hospital fluid bed, and FIG. 2 is a side view of the hospital fluid bed, and FIG. 3 is an isometric perspective view of the airbag installed in the hospital fluid bed of FIG. 1; FIG. 4 is an end view with the foot plate removed; FIG. 5 is a partial sectional view of an air supply 7-nibold equipped with an inlet connection for inflowing air into the air bag; FIG. 6 is a side view of a lifting mechanism for a hospital fluid bed; Figure 1 is a partially cutaway end view taken along line 6-6 of the hospital fluid bed in Figure 6, and Figure 8 is a partially cutaway end view of the hospital fluid bed in Figure 6.
Figure 9 is an end view taken along the line 8-8 in the figure, Figure 9 is a partial side view of the upper structure when the handrail provided at the top of the hospital fluid bed is in the upright position, and Figure 10 is a partial side view of the upper structure when the handrail is in the folded position. A partial side view similar to Figure 9 at a certain time, Figure 11 is a partial cross-sectional view of the handrail showing the locking mechanism of the handrail in detail, Figure 12 is a partial cross-sectional view showing the connecting part of the handrail, and Figure 13 is a movable side view. 1 is an end view of a hospital fluid bed showing a foot plate and a fixed foot plate; FIG.
Figure 4 is a side view of the movable foot plate and hospital fluid bed in Figure 13, Figure 15 is a plan view of the hospital fluid bed showing the ++J movable foot plate and guide rail in Figure 13, and Figure 16 is the guide rail. and a partial sectional view of the movable foot plate to show the structure of the foot plate; FIG. 17 is a partial side view of a part of the movable foot plate;
Figure 8 is a partial view of the upper part of the movable foot plate, and Figure 19 is the first part showing the detailed structure of the pivotable foot plate platform.
The sectional view taken along the line 19-19 in Fig. 8, and Fig. 20 show the air supply v4.
It is an electronic circuit and a pneumatic circuit diagram of @. 18.20, 22.24... Loyal support member 30...
Airbag 32... Upper part 34... Center part 36, 38... Inclined part 40. 42... End face 46, 48... Connection part 52... Side face 54...・Bin ball 64...Inlet connector 66...Bottom surface 68...Holding seal member 266, 268...Air supply blower 270...AC power supply 272...Battery power supply

Claims (10)

[Claims] (1) Consisting of patient support members 18, 20, 22, 24, a plurality of identical air bags 30 made of a material that is impermeable to air and water but permeable to water vapor, and an air supply device, the patient support member 18 , 20, 22, 24 have adjustable bed portions whose positions can be adjusted for patient comfort;
2 and 24 to form an elongated gap therebetween, and the airbag 30 is arranged side by side on the bottom surface 66.
and an upper surface 32, a side surface 52, and end surfaces 40, 42, having one air inflow opening provided in the bottom surface 66 and an elongated air diffusion zone provided in the crack,
The air diffusion zone is provided along the top of the at least one side 52, and the air diffusion zone is provided along the top of the at least one side surface 52 to continuously and evenly circulate air from the air bag 30 along the crack and beneath the patient. air bag 3
It consists of a number of small air vents 54 spaced apart from each other along the upper side 52 of the air bag 30, the air supply device communicating with the air inlet opening of the air bag 30 to facilitate the patient's relaxation. A fluid bed for a hospital, characterized in that an air bag 30 is appropriately inflated to support a patient, and the flow of air from the air vent 54 to the crack is corrected. (2) The upper surface 32 of the air bag 30 has a convex cross section and a convex longitudinal section, and the upper surface 32 of the air bag 30 has an elongated convex upper central portion 34 and a convex shape. The air bag is formed by an upper central portion 34 and adjacent convex side portions, and has inclined portions 36 and 38 extending downwardly from the convex upper central portion 34 toward each end. The convex upper central portion 34 of the airbag 30 and the sloped surfaces 36 and 38 extending downwardly cooperate to make the height of the central portion higher than the height of the side portions. 2. A hospital fluid bed as claimed in claim 1, characterized in that the material forms a patient support that minimizes wrapping around the patient. (3) The air bag 30 has a retaining tab device 46 at both ends.
, 48, and the patient support members 18, 20, 22, 2
4 receives the retention tab devices 46, 48 and releasably connects the airbag 30 to the patient support members 18, 20, 2.
2. Hospital fluid bed according to claim 1, characterized in that it has an air bag connection device for fixation to 2, 24. (4) The patient support members 18, 20, 22, and 24 have a plurality of substantially flat support parts that can be positioned and adjusted in a coplanar state or a relatively inclined state, and the air bag 30 is mounted on the plurality of support parts that are adjustable. The air supply device may include a plurality of air inflow manifolds and a plurality of air distribution units connected to each of the air inflow manifolds. a single air supply line communicating with all of the air distribution lines, a compressed air source communicating with the single air supply line, and a stable flat patient support. and a device for simultaneously removing air from the air bag 30 and lowering the patient onto the flat support surface, in which the air inlet manifold is Claims characterized in that the air distribution line has a plurality of openings for connection to the air bag 30, and that the air distribution line has a control valve that can adjust the air pressure in the air bag 30 of the air inlet manifold. Hospital fluid bed according to paragraph 1. (5) The air supply device includes a main air supply blower 266 that communicates with an air bag that is normally provided for supplying air to the air bag 30;
a backup air supply blower 268 selectively provided to supply air to the main air supply blower 266 and the backup air supply blower 2;
68 are connected to each other, and detects a failure of the main air supply blower 266 and drives the backup air supply blower 268, as well as an electronic control circuit for stopping the driving of the main air supply blower 266. A hospital fluid bed according to claim 1. (6) When the air supply device is in a normal state, there is an AC power supply 270 that controls the air supply device, and a DC power supply 2 that controls the air supply device.
72, and a DC that converts direct current to alternating current and supplies alternating current output.
/AC converter 274 and AC power supply 270 are detected and automatically connects the AC output from the DC/AC converter to the air supply device, thereby disconnecting the drive of the hospital fluid bed from AC power supply 270. 2. A hospital fluid bed according to claim 1, further comprising a device for switching to a DC power source 272 upon release. (7) a patient support member 18, 20, 22 having an adjustable bed portion whose position can be adjusted for patient comfort;
24 and the patient support members 18, 2 to support the patient.
0, 22, 24, an air supply device, a plurality of air inflow manifolds having a plurality of openings for connection to each airbag 30, and The air bag 30 includes a plurality of air distribution lines connected to each of the air inflow manifolds and a pressure control device, and the air bag 30 is formed from a material that is impermeable to air and water but permeable to water vapor, and has a bottom surface 66 and a top surface. 32, a side surface 52, and end surfaces 40, 42;
air inlet openings and a plurality of small vents 54 in the upper part of at least one side 52 to ensure constant and even air circulation from the air bag 30 on the underside of the patient. ports 54 are spaced apart from each other, and the air supply device communicates with the air inflow opening of the air bag 30 to appropriately inflate the air bag 30 to support the patient so that the patient can relax; The air distribution line has a control valve that can adjust the air pressure in the air bag 30 of the air inflow manifold, and the pressure control device allows the patient to raise the head and torso position to take a more upright position. In some cases, the air pressure in the airbag 30 installed at the patient's buttocks is automatically increased to compensate for the weight concentrated on the patient's buttocks, and when the patient lowers the position of the head and torso, the air pressure is increased automatically. A hospital fluid bed characterized in that the air pressure in the bag 30 is returned to normal pressure. (8) The air supply device includes a plurality of air distribution manifolds and an air connection device 6 provided with a flange 68.
4, the air distribution manifold being disposed end-to-end along one side of each patient support member 18, 20, 22, 24;
0, 22, and 24, the air distribution manifold has a plurality of spaced apart air inflow openings at the top, and the air connection device 64 connects the air of the air bag 30. The air connection device 6 defines a passage extending into the inflow opening and supplying air from each air distribution manifold to each air bag 30.
8. A hospital fluid bed according to claim 7, wherein a flange 68 on each air bag 30 secures and seals each air bag 30 to each air distribution manifold. (9) The air supply device includes an air blower device having an air outlet, an air supply conduit connected to the air outlet, and an air distribution unit that supplies air to the air bag 30 and is connected to the air supply conduit. Claim 7, characterized in that the pressure control device comprises a control valve capable of setting the air pressure according to various weights of patients using the hospital fluid bed. Hospital fluid bed as described in Section 1. (10) Consisting of patient support members 18, 20, 22, 24 whose positions are adjustable for patient comfort, a plurality of identical airbags 30, and an air supply device, with the airbag 30 on the bottom surface. 66, the upper surface 32, and the end surface 4
0, 42 and a side 52 such that the side 52 of the adjacent airbag 30 is connected to the patient support member 18, 20, 22, 24.
are placed side by side on top of each other, forming a long and narrow crack between them.
Further, the air bag 30 is made of an airtight material and has an air inlet opening on the bottom surface 66;
The air bag 30 further includes a plurality of small air vents 54 spaced apart from each other on the side 52 to distribute air to each of the crevices to allow air to circulate under the patient. , the air supply device communicates with the air inflow opening of the air bag 30, and the air bag 30 is configured to support the patient in a comfortable state.
the air supply device further comprises a plurality of air inflow manifolds, a plurality of air distribution lines connected to each of the air inflow manifolds, and a pressure control device; an air inlet manifold has a plurality of openings for connection to each air bag 30, and the air distribution line has a control valve that can adjust the air pressure in the air bag 30 of the air inlet manifold; When the pressure control device raises the head and torso position and assumes a more upright position, the air bag 3 provided at the patient's buttocks is activated.
The air pressure in the air bag 30 is automatically increased to compensate for the weight concentrated on the patient's buttocks, and when the patient lowers his or her head and trunk, the air pressure in the air bag 30 is returned to normal pressure, and the pressure The control device further includes an exhaust valve provided in the single air supply line and an electronic circuit, and an electronic control device for moving the exhaust valve from an air supply position to an air exhaust position. The electronic circuit has a switch that interconnects the exhaust valve and the air supply line, and when the switch is selectively driven, the exhaust valve is set to the exhaust position and the air is supplied. Hospital fluid bed according to claim 7, characterized in that the supply is stopped.