KR970002929B1 - Air sac for oscillating low air loss bed - Google Patents

Abstract

None.

Description

Air bag for vibration bed with low air loss

The present invention relates to an air bag for use in a patient support system with low air loss. In particular, the present invention relates to a bed described in U. S. Patent Application No. 905, 553 pending with the present application having an integrated device for retaining the patient in the air envelope as the patient moves toward the ends of the air bag. It relates to an air bag used in a bed with less air loss. Such a bed can be advantageously used to prevent bed sores and the collection of fluids in the lungs of patients who do not occur.

Many US and foreign patents describe air mattresses or cushions that consist of a set of cells that alternately expand and contract to support a patient on a load of one air cell and then on another group. It is. Such patents include the following United States patents: 1,772,310, 2,245,909, 2,998,817, 3,390,674, 3,467,081, 3,587, 568, 3,653,083, 4,068,334, 4,175,297, and 4,193, l49, 4,197,837, 4,225,989, 4,347,633, 4,391,009, and 4,472,847 and include the following foreign patents: British Patent 959, l03, Australian Patent 401,767, and Federal Republic of Germany Patent Nos. 24 46 935, 2919 438 and 28 07 038. The devices described in the above patents do not all roll or alternately move a patient supported on its upper part to distribute the patient's weight above the additional air cushions or cells or alternately pressure the lower parts of the patient's body. It does not alleviate.

Also, many patents describe inflatable devices that alternately supply air to a set of cells, but not to an air mattress or cushion, and then to another set of cells. Such patents include US Pat. Nos. 1,147,560, 3,595,223, and 3,867,732, and British Patent 1,405,333. Of these patents, only the British patent describes the movement of the body as the air pressure in the cells of the device is reduced.

British Patent 946,831 describes an air mattress having inflatable elongated bags positioned side by side and in fluid communication with each other. A valve is provided in the conduit connecting the insides of the two bags. Air is supplied in an amount sufficient to support the patient, lifting the patient from the bed enlargement or other surface on which the air mattress is seated on top. Any imbalance in the weight distribution of the patient moves air from one bag to the other, causing the patient to rotate in the direction of the now retracted bag. The automatic switching valve, which does not reveal its own details, squeezes the retracted bag while retracting the bag that was originally inflated, shaking the patient in a different direction.

The device described in this patent does not allow bad sour of the device as there is not enough air to support the patient up from the bed or from another surface on which the air mattress is seated on top of it when the patient is shaken on the retracted bag. The ability to prevent is limited so that a pressure essentially equal to the pressure generated by the plank or by another surface without an air mattress is generated against the patient's skin. Even if there is enough air left to support the patient in the shrunk bag, if the air mattress is constructed in a form with low air loss, the remaining air in the bag will cause the patient to rest on the bed or other surface with the same result. It is slowly taken away from the turret until it is seated directly. Finally, the device is unsuitable for use with a bed with hinged areas that coincide with the parts of the patient's body lying on the bed, so that the inclination angle of the various areas of the bed is for patient comfort or treatment. Can be adjusted for reasons.

The present invention includes the prior art including the ability to maintain air pressure, the ability to easily and quickly replace one or more air bags with low air loss of the bed in operation, and the easy adjustment of air pressure in the air bags. It is characterized by having many advantages over the devices.

Accordingly, an object of the present invention is to provide a generally rectangular enclosure constructed of water vapor permeable material, a device for connecting the inside of the shell to a gas source for inflating the shell, and releasably fixing the shell to a bed with low air loss. Device, an integral device for navigating a patient whose rectangular envelope is seated on an upper surface thereof when the outer shell is inflated, and a rectangular outer shell which allows the patient to be moved towards him to hold the patient on the upper surface of the envelope To provide a low water vapor permeable air bag composed of an integrated device at the end.

Another object of the present invention is to provide an air bag with a single opening that can be quickly and easily removed from the air bed to allow easy replacement of the air bag even when the bed is in operation.

Those skilled in the art will recognize other objects and advantages from the following description.

(Summary of invention)

The above objects and advantages are mounted on top of it, consisting of a shell for supporting the patient and distributing pressure over the body of the patient to prevent pressure points and for connecting the inside of the shell to a gas source for inflating the shell with gas. It is accomplished by the present invention by providing an air bag for use in a low air loss bed having a plurality of air bags mounted transversely. The sheath is provided with a device for securing the sheath to a bed with low air loss and a device supported thereon to move the patient supported towards one end of the sheath when the air bag is inflated. The air bag is also provided with an integrated device that keeps the patient supported on the top surface of the skin as the patient is moved towards the end of the skin.

1 is a perspective view of a low air loss bed having an air bag mounted to the bed in accordance with a suitable embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of the bed of FIG. 1 along line 2-2 of FIG. 1 showing an air bag having a second air bag indicated by dashed lines for clarity.

3 is a side view of a suitable embodiment of an air bag for use in the bed of low air loss of FIG.

4 is a side view of another suitable embodiment of an air bag for use in the bed of low air loss of FIG.

FIG. 5 is a side view of another suitable embodiment of an air bag for use in the bed of low air loss of FIG.

FIG. 6 is a side view of another suitable embodiment of an air bag for use in the bed of low air loss of FIG.

7A to 7D are side views of the patient (FIG. 7D) supported on the upper surface of the air bag of the bed with low air loss of the present invention, and side view when the patient swings toward one side of the frame of the bed with low air loss. (FIG. 7A), side view when shaking toward the other side (FIG. 7C) and side view of the patient supported by the air gun when all air bags are fully inflated (FIG. 7B).

(Detailed Description of Suitable Embodiments)

Referring to FIG. 1, there is shown a bed 10 bearing the frame l2. The frame 12 is a plurality of portions 14 ', 14 ", 14 hinged at points 44', 44" and 44 ". And 14 " and end members 16, the frame 12 having a headboard 20 at one end and a foot board 21 at the other end. It is.

Air bags 58 are generally long and are made of a coated fabric or similar material through which the water vapor can move, but does not penetrate the water and other liquids. Fabrics sold under the trademark "GORE-TEX" are one such suitable material.

Referring to FIGS. 1 through 6, there are shown air bags of different shapes that are used in positions to be mounted on the frame 12 of the bed 10. For example, several air bags mounted on foot baseboard 46 are in the form indicated by reference numeral 328. Likewise, some air bags mounted on foot baseboard 46 are in the form indicated by reference numeral 322, and all air bags mounted on leg baseboard 48 and seat baseboard 50 are referenced. In the form indicated by the number 322. In addition, some or all of the air bags indicated by reference numeral 322 may be replaced by air bags of the type indicated by reference numeral 325 (see FIG. 4) or 337 (see FIG. 6). have. Some air bags indicated by reference numeral 322 are also mounted to head baseboard 52 in the form indicated by reference numeral 58 as well as air bags.

The air bags 58,322,325,328 and 337 are constructed in the form of a generally rectangular shell, at least the upper surface 323 of the shell being constructed of a waterborne permeable material as described above. Air bags 58,322,325,328 and 337 have a device for inflating gas in the form of nipples 23 (see FIGS. 2 to 6) by connecting the inside of the air bags to a gas source (not shown). The nipple extends through a hole 54 in the baseboard 50 into a gas manifold 80 mounted to the baseboard 50 as shown in FIG.

An o-ring 68 is provided in the hole 54 to seal the nipple 23, and an extension tab tab 15 is fixed under the screw 13 to hold the air bag 322 in the long position. Let's do it. Air bags 58,322,325,328 or 337 are also provided with a device for releasably securing the air bag envelopes in the form of posts 32 to the low air loss beds l0, which posts extend through the holes 54. And has a retainer 34 on its end that engages the baseboard 50 with the lower side.

When the air bags 322, 325, 328 or 337 are inflated, the patient 348 (see FIGS. 7A-7D) supported on the air bags 322, 325, 328 or 337 is moved toward one side of the frame 12 and the patient ( When the 348 rolls or shakes toward one or the other of the frame 12, a device is provided to hold the patient 348 on the upper surface of the air bag 322, 325, 328 or 337. When the air bags 322, 325, 328 or 337 are inflated, the device for moving the patient 348 supported on the air bags 322, 325, 328 or 337 towards one side of the frame 12 is generally a function of each air bag 322, 325, 328 or 337. It consists of a cutout 324 in the upper portion 323 of the rectangular shape.

Each air bag 322, 325, 328, or 337 also includes air as the patient 348 rolls toward the side of the frame 12 by inflation of the air bags 322, 325, 328 or 337 in the form of a column 326. A device is provided for retaining a patient on the upper surface 323 of the turrets 322, 325, 328 or 337, which pillar is integral with each air turret 322, 325, 328, or 337 and, when inflated, Protruding upwards defines the generally rectangular end and edge of the air bag 322, 325, 328 or 337.

As shown in FIG. 1, a plurality of air bags 58, 322, 325, 328 and / or 337 are mounted transversely on the frame 12 of the bed 10. Air bags 322, 325, 328, or 337 may be provided with a first set of columns 326 and a block 324 closer to the other side of the bed frame 12 and a column 326 and a block 324. It is divided into a second set of air bags 322, 325, 328 or 337, which are closer to the second side of the bed frame. The first set of air bags 322, 325, 328 or 337 and the second set of air bags 322, 325, 328 Or 337 are interchanged along the length of the baseboards 46, 48, 50 and 52. As described below, the first set of air bags 322, 325, 328 or 337 is a gas source (not shown). Inflated with air from it to roll the patient 348 supported thereon toward the first side of the bed frame 12 and then contract while the second set of air bags 322, 325, 328 or 337 is inflated. The patient 348 supported thereon is moved toward the other side of the bed frame 12 (Seventh A The reference to FIG. 7D). Air pressure in the sets of air bags is monitored by the gauge 242. The

The air bag 58 mounted on the head baseboard 52 is provided with a flat upper surface 323, so that the head of the patient 348 is held in a relatively constant position, but the body of the patient 348 first has a bed frame ( 12) and then rolled again towards the other side of the bed frame 12. Referring to FIG. 3, an air bag 58 is shown for use under the head of the patient 348. Air bag 58 is generally rectangular, but with an inclined top surface 323 in zone 33l adjacent edge 448. Patient 348 has air bags 322, 325, 328 and / or the like. Or when lying on 337 the heavier parts, i.e. the parts of the body other than the head, as shown in FIG. 7D, the total height of the air bag 58 into the air bags 322, 325, 328 or 337. It is lower than the height of the air bag 322, 325, 328 or 337. When the patient 348 sinks into the air bags 322, 325, 328 and / or 337, the head is like other parts of the patient body that sinks into the air bags 322, 325, 328 or 337, with the rest of the body being supported thereon. Since the head does not sink into the air bag 58, the head is seated uniformly on the air bag 58.

The air bag 328 mounted on the foot baseboard 46 is also provided with a blocking portion 324 and a pillar 326 as described for the air bag 322. In addition, the air bag 328 is provided with a hump to limit the movement of the legs of the patient 348 while the patient 348 is moving back and forth, such that the patient 348 may be moved to the air bags 58,322,325,328 and 337. Helping to be retained on the upper surface 323 and helping to distribute the pressure developed over the patient 348 skin over the increased area. Referring to FIG. 5, a side view of an air bag 328 with a hump 330 formed in its upper surface 323 is shown. As can be seen in the drawing, when the air bag 328 is inflated, the hump 330 and the pillar 326 protrude upwards to prevent the patient 348 from rolling too far into the foot of the air bag 328 or to the other side. To help.

As mentioned above, some air bags mounted to the foot baseboard 46, and suitably all air bags mounted to the leg baseboard 48 and the seat baseboard 50, are referred to in FIG. 322). In addition, the air bag 322 is structured in the form indicated by the reference numeral 325 of FIG. 4 or the reference numeral 337 of FIG. The air bag 325 is provided with a block 324 that is approximately the same depth as the block 324 of the air bags 322, 328 and 337, but the upper surface 323 of the air bag 325 in the zone 329. ) Is less than the inclination of the top surface 323 in the zones 329 of the air bags 322, 328 and 337. The air bag 325 is also provided with an area indicated by reference numeral 327 in which the inclination of the wall surface of the blocking portion 324 is changed. The edge 335 of the air bag 325 allows the patient 348 to use the air bag 325 so that the weight of the patient 348 is used to assist the cloud towards each air bag 325 of the patient 348. When alternately rolling from one end to the other end of, it acts as a balance point as shown in FIGS. 7A and 7C. In order to further distribute the pressure generated by the air bag 325 against the buttocks and shoulders of the patient 348 when the patient rolls to the positions shown in FIGS. 7A and 7C, The inclined part of the wall surface of the pillar 326 which is shown by the reference number 339 is provided. In connection with the adjustment of the air pressure in the air bags 58, 322, 328 and / or 337, the air bag 325 is used under different parts of the body of the patient 348 so that the patient 348 has one side of the bed frame 12. Increase or decrease the degree and speed of rolling from the other side. For example, the air bag 325 is particularly suited for use as shoulder shoulders of the patient 348.

Although patient 348 is shown supported on an airborne target having the shape indicated by reference numeral 325 of FIGS. 7A-7D, as will be appreciated by those skilled in the art, patient 348 may It can be rolled back and forth alternately when supported on any air bag 322, 328 or 337. Regardless of the form used, when a set of air sacks 322, 325, 328 or 337 are inflated, one side of the patient 348 falls into the obstruction 324 to cause the patient 348 to air sac 322, 325, 328 or 337. Roll toward). When the set of air bags 322, 325, 328 and / or 337 is retracted and the second air bag set 322, 325, 328 and / or 337 is inflated, the patient 348 first sees the horizontal position shown in FIG. 7D. Then roll towards the other end of the air sacks 322, 325, 328 and / or 337.

As noted above, each air bag 58,322,325,328 and 337 form a generally rectangular envelope, the dimensions of which are about 457 × 991 cm (18 × 38 in) when not inflated. Each sheath is provided with a baffle 460 that supports against bowing of the sidewall faces 61 and is attached to the inside of the sidewall faces 61 when the air bags 58,322,325,328 or 337 are inflated. Each corner 448 has a radius of curvature of about 76 mm (3 in), and the length of the blocking portion 324 ranges from about 203 mm (8 in) to about 330 mm (13 in) in the direction of the line 451, The dimensions are approximately 254 mm (10 inches). The dimensions of the pillars 326 of the air sacks 325, 328 and 337 range from about 127 mm (5 inches) to about 305 mm (12 inches) in the direction of the line 450, and the present embodiment dimensions range from about 178 mm (7 inches) to about 305 mm ( 12in). The range of dimensions along line 450 gives sufficient size to column 325 to give it sufficient rigidity when inflated, relative to baffle 460, when partially inflated in both sets of air bags 58,322,325,328 and 337. That is, when the patient 328 is in the position shown in FIG. 7B, or when in the position shown in FIG. 7D, or fully inflated, the pillars 326 extend outwards from the sides of the bed frame 12. Prevents receiving force. The shape of the air bag 325 (see FIG. 4) is due to the inclined portion 339 of the wall of the pillar 326 towards the bottom of the blocking portion 324, thereby moving the pillar 326 in the outward direction. More effective in preventing, and those skilled in the art can provide similarly inclined portions 339 to any or all of the pillars 326 of the air bag 322,328 or 337.

Referring to FIG. 2, the dimension along the line 459 of the upper surface 323 of the air bag 322 is about 483 mm (19 in). The upper surface 323 then falls along the surface 329 into the block 324 in the curve 464 with a radius of about 76 mm (3 in). The dimension of the blocking portion 324 in the direction of the line 462 is in the range of about 127 mm (5 inches) to about 254 mm (10 inches), and is about 178 mm (7 inches) in this embodiment.

Referring to FIG. 4, the dimension of the blocking portion 324 in the direction of the line 452 is about 127 mm (5 in) to about 254 mm (10 in). The inclination of the inverted portion 327 of the upper surface 323 of the air bag 325 depends on the dimensions of the lines 461, in accordance with the dimensions of lines 450 and 452 (51 mm (in this embodiment) 2 inches) to 127 mm (5 inches), and all of the above dimensions may vary depending on the particular type of operation required and the weight and size of the patient 348.

The dimensions (FIG. 5) of the air bag 328 are as follows. As described above, the dimension in the direction of the line 5450 of the technology 326 is about 127 mm (5 in) to about 305 mm, depending on the dimension of the line 450, similar to the dimension in the direction of the line 452 of the blocking portion 324. Can be changed to (12in). The dimension in the direction of the line 454 of the hump 330 on the air bag 328 is about 127 mm (5 in), and the dimension in the direction of the line 456 is about 51 mm (2 in). The dimension in the direction of the line 458 of the surface 333 is about 356 mm (14 in).

Referring now to air bag 337 (FIG. 6), the dimension of the surface 329 in the direction of the line 453 is about 508 mm (20 in), and the surface 329 has a steeper slope than the surface 329. Falling along the surface 466 into the block 324 in the curve 455 with a radius of about 76 mm (3 in). For dimensions of the pillar 326 and the block 324, see air bags 322,325 and 328. It can be changed as described above.

The use of individual air bags 58, 322, 325, 328 or 337, rather than a single air cushion over the length of the bed frame 12, allows replacement of individual bags that need to be developed for leaks and require cleaning or other attention. do. When it is necessary to remove each air bag 58,322,325,328 or 337 from its respective baseboard 46,48,50 or 52, remove the post 32 and retainer 34 from the hole 54. (See Figure 2.) Next, the nipple 23 is rotated until the extension tab 15 is rotated from engagement with the screw 13, and the nipple 23 is pulled out of the hole 54 by force. The hump 330 in the air bag 328 provides a longitudinal barrier along the upper surface of the air bag 328 so that one of the legs of the patient 348 even while the air bag 328 alternately expands and contracts. Are retained on both sides of the longitudinal barrier. In this manner, the hump 330 prevents the patient 348 from rolling too far to one end or the other end of the air bag 328. Also, the legs of the patient 348 do not slide and / or rub together while the patient 348 alternately rolls from one side of the bed frame 12 to the other. As will be appreciated by those skilled in the art, the air bag 328 with the hump 330 inside itself is replaced with air bags 322,325 or 337 depending on the type of therapy and the degree of movement required for the particular patient. Can be.

Although the present invention has been described above by the preferred embodiments described above, the description is for the purpose of illustration only and not of limitation, and the scope of the invention is limited only by the appended claims.

Claims (14)

An inflatable air bag for use in a patient support system comprising a plurality of transversely oriented air bags for supporting a patient, the air bag comprising an inflatable enclosure, the envelope being a gas. A gas inlet for connecting the interior of the sheath to a gas source to expand the sheath, and a first inflation portion formed in the sheath for rolling the patient by lowering one side of the patient relative to the other side of the patient And a second inflation portion formed in the envelope for retaining the patient on the envelope when rolled with the patient. The method of claim 1, wherein the first inflation portion lowers one side of the patient relative to the other side of the patient when the first inflation portion is inflated to cause the patient to roll towards one end of the outer shell when the inflation is inflated. A first wall formed such that the second expansion portion is formed on the envelope to retain the patient on the envelope when the patient expands the patient towards one end of the epithelium by expansion of the first expansion portion. Air bag made with. The air bag according to claim 2, wherein the first expandable portion is in open communication with the second expandable portion so as to balance pressure with each other. 3. The air bag of claim 2 wherein said first wall comprises a wall portion that slopes downwardly from an upper end thereof to a lower end thereof. 3. The method of claim 2, wherein the first wall is located between the second and third walls of the skin, the second and third walls are the first and second opposing end walls of the skin, and the second expansion portion An air bag positioned between the first wall and the third end wall, wherein the first wall is inclined downward toward the second expansion to roll the patient towards the second expansion. 6. The air bag according to claim 5, wherein said second expandable portion is integrally formed with said shell adjacent to said third wall. 3. The first wall of claim 2, wherein the first wall of the first expanded portion is asymmetrically disregarded so that the space partially defined by the first expanded portion and the second expanded portion is asymmetrical with respect to the sheath, Air bag, characterized in that one side of the patient is rolled into the space when the inflation section is inflated. An inflatable air bag for use in a patient support system that includes a plurality of transversely oriented air bags for supporting a patient, the air bag comprising an inflatable envelope, the envelope comprising a first end wall and a first end wall. A first end wall adjacent to the first end wall, a second end wall facing the first end wall and adjacent to the first side wall, a first end wall and a second end facing the first side wall; A second side wall adjacent to the buttress, a first end wall and a second end wall, and a bottom wall adjacent to each of the first side wall and the second side wall, wherein the expandable sheath is disposed on one side of the patient; A first inflation portion comprising a sloped wall positioned between the first end wall and the second end space of the inflatable envelope while simultaneously lowering the patient by lowering the side surface; On the outer shell when rolled A second inflation portion including a vertical wall positioned between the first end wall and the second end wall at the same time for retaining a patient therein; and an air inlet for connecting the gas source and the interior of the shell to enable expansion; Air bag, characterized in that. The air bag of claim 8 further comprising a baffle attached and spanned between the inner surface of the first side wall and the inner surface of the second side wall. An inflatable air bag for use in a patient support system comprising a plurality of transversely oriented air bags for supporting a patient, the inflatable air bag comprising: an inflatable long sheath having opposing ends, wherein the sheath is said opposite; A sloped wall positioned between one of the ends and inclined downward toward the first end of the ends, an intermediate vertical wall located between the first end and the sloped wall, and an air inlet in the wall of the shell; Air bag. An inflatable air bag for use in a patient support system comprising a plurality of transversely oriented air bags for supporting a patient, comprising: a bottom wall, a first end wall connected to one end of the bottom wall, and a bottom wall A second end wall connected to the opposite end of the second wall and opposite the first end wall, a first side wall connected to one side of the bottom wall, a second side wall connected to the opposite side of the bottom wall, and a downward slope to the second end wall An inclined wall located between the first and second end walls, and connected to the first and second side walls along the opposite edge thereof, and between the inclined wall and the second end wall, and the first and second along the opposite edge thereof. An air inlet integral with at least one of the walls of the air bag and an intermediate vertical wall connected to the two side walls. 12. The system of claim 11, further comprising a first life upper wall extending from the first end wall to the second end wall and a second horizontal top wall extending from the second end wall to the first end wall. Connected to and extending downward from the first upper wall, the intermediate wall connected to and extending downward from the first upper wall, wherein the first upper wall is at the first end and at the upper end of the first end wall and at the second end. Connected to the upper end of the inclined wall, the second upper wall is connected to the upper end of the second end wall at the first end and to the upper end of the intermediate wall at the second end, and the bottom wall is the first and second end wall at the lower end thereof. And the first and second side walls, respectively, the lower end of the intermediate wall is connected to the lower end of the inclined wall, the first end wall and the second end wall are vertical, and an air bag characterized in that the bottom wall is horizontal. . 13. The air bag of claim 12, further comprising a baffle attached and spanned between the inner surface of the first side wall and the inner surface of the second side wall and simultaneously located between the inclined wall and the first end wall. 13. The air bag of claim 12, wherein the inlet port is integral with the bottom wall and connectable with a source of pressurized gas such that the bag can be inflated by the pressurized gas.

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