JP6006188B2 - Pressure sore prevention device - Google Patents

Description

  The present invention relates to a pressure ulcer prevention device used in areas where pressure ulcers are likely to occur, such as the trunk of a user who cannot move for a long time or the skeletal protrusions of limbs in the medical field, health field, care welfare field, etc. The present invention relates to a pressure ulcer prevention device that is suitably used for the prevention of pressure ulcers in the back of the pelvis, for example, the sacrum, which is the most likely site for pressure ulcers.

  As a conventional technique, a pneumatic pressure ulcer prevention device is widely used by a user who sleeps on a bed or uses a bed. These pneumatic pressure ulcer prevention devices divide the part that comes into contact with the patient into multiple air bags, and supply and exhaust each air bag with a pump to expand and contract each air bag and move the weight support site It is a device that reduces pressure load and loading time that tend to concentrate on pressure ulcer recurrent sites and prevents pressure ulcers.

  Examples of these devices include a body bed and a mat, which alternately pressurize a plurality of air bags (Patent Documents 1 to 3), and air at a position corresponding to a patient's clothes and pressure ulcer frequent occurrence site. The thing (patent documents 4-7) provided with the bag is disclosed. Further, Patent Document 8 discloses an air duvet in which a suspended portion composed of a hollow tube is sandwiched between two sheets, and the suspended portion is arranged in a cross shape.

JP-A-60-96251 JP-A-60-75013 JP-A-3-244457 Special table 2011-518029 gazette JP 2009-226185 A Japanese Patent No. 2733027 Special table 2009-525160 gazette Japanese Utility Model Publication No. 27-10875

  Among the above-mentioned prior art documents, those which are provided in a bed or mat for the whole body and are alternately pressurized with a plurality of air bags (Patent Documents 1 to 3), because the area and volume of the air bag extends over the entire bed. In addition, the supply / exhaust capacity is large and the supply / exhaust time is long, and the volume / weight of the entire device increases, requiring a large amount of space and labor for its movement, installation, storage, etc., cost, clinical use efficiency, and mobility There was a problem.

  On the other hand, a pressure ulcer prevention device (see Patent Documents 4 to 7) having an air bag attached to a patient's clothes can solve this problem. These devices do not place an air bag on the entire bed or mat, but have an air bag at a position corresponding to a pressure ulcer occurrence site on a patient's clothes, and are relatively limited especially in or around the buttocks. Patent Documents 4 to 6 disclose a hip sore prevention device provided with an air bag. However, the device described in Patent Document 4 has the possibility of developing pelvic marginal pressure ulcers such as the iliac and sciatic bone by the air bag surrounding the pelvic marginal part in a U shape, and the pelvic center from the marginal part. May impede skin blood flow to the part and must be avoided for the prevention or treatment of pressure ulcers. In addition, the devices described in Patent Documents 5 to 7 are to wear an air bag as some kind of clothing on the buttocks and stabilize the position of the air bag and the pelvis. There is a problem that the vertebra is twisted with respect to the spine. In particular, for patients undergoing bed therapy due to spinal diseases such as low back pain, it is painful and painful to have the hips raised alternately and the pelvis and spine twisted.

  Focusing on the structure of the air bag for reducing the concentration of the load pressure and the load time, a plurality of air bags as shown in Patent Document 1 are arranged in a one-layer plane structure with different sections, and alternately Some pressurize and move the body weight support site. However, in the one-layer structure, if the load part is divided into two or more sections because of alternating pressurization, the area of each load section becomes a small range. There was a problem that the load support of the pelvis which is easy to concentrate and the prevention of levitation and pressure ulcer in the central part became insufficient, and so-called bottoming occurred. In addition, there is a problem of the above-described pelvic twist by raising the buttocks alternately to the left and right. In order to make the pelvic center float enough, it can be solved by increasing the thickness and pressurization of the air bag. However, as a bed for bed hospitalization or medical treatment, excessive floating feeling・ There were problems such as instability and sleeplessness.

  Further, there are also air bags configured in a double or multi-layer structure as shown in Patent Documents 2 to 3. With this device, bottoming is unlikely to occur, but since the pressurization of air bags arranged side by side in the same direction is repeated, skin blood flow that goes straight in the direction toward the pelvic center, which is a common pressure ulcer, is always present. There are disadvantages such as being blocked, and in order to ensure the decompression of the central part of the pelvis, there is a problem that it is necessary to consider the pelvic shape and the like of the short diameter and interval of the air bag. Moreover, the air futon of patent document 8 does not have the structure which supplies / exhaustes to each division, or the knowledge which laminates | stacks an air bag, and cannot perform pressure ulcer prevention by the switching of a pressurization site | part or the movement of a body weight support site | part.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and is a lightweight, simple, flexible and flexible use, and is the most frequent pressure ulcer recurrent site, that is, the posterior central part of the pelvis, that is, the sacral part. Therefore, it is an object of the present invention to provide a pressure ulcer prevention device that can prevent pressure ulcers in the buttock by stably floating the pelvis without causing bottoming or twisting of the pelvis.

  In order to solve the above technical problem, the present invention provides a pressure ulcer prevention device having the following configuration.

According to the first aspect of the present invention, a suspended portion provided in the lumen and extending radially from the starting end, a first air bag having a supply / exhaust port for supplying and exhausting air to and from the lumen,
A suspension part provided in the lumen and extending radially from a starting end; and a supply / exhaust port for supplying and exhausting air to and from the lumen. A second air bag arranged in a state of being stacked on the first air bag so as to have a two-dimensional angular phase difference from the radial extension direction of each suspension part of the first air bag of the part ,
The first air bag and the second air bag are arranged between the user's body and the surface under the user's body so that the extension center portion is located at the skeleton projecting portion of the user, and alternately from the air supply / exhaust port. An inflatable / deflection type pressure ulcer prevention device is provided.

  According to the second aspect of the present invention, the skeleton protruding portion of the user is a pelvic protruding portion of the user, and the first air bag and the second air bag are the user's buttocks and the surface below the buttocks. The pressure ulcer prevention device according to the first aspect is provided such that the device is disposed so as to be positioned at the pelvic protrusion portion between the pelvic protrusion and the pelvis.

  According to the third aspect of the present invention, the suspended portion of the first air bag and the suspended portion of the second air bag are configured such that the terminal ends do not reach the lumen edge and are not joined to each other at the starting end portion. The pressure ulcer prevention device according to the first aspect or the second aspect is provided. Preferably, each is configured in a cross shape, and can be stacked with an angle of 45 degrees with each other, for example.

  According to the fourth aspect of the present invention, the first air bag and the second air bag are configured in a rectangular shape, and the suspension portion of the first air bag extends diagonally from the start end portion in a cross shape, and the second air bag. The pressure ulcer prevention device according to any one of the first to third aspects is provided, wherein the suspension portion of the air bag is configured to extend in a cross shape in the side direction from the starting end portion.

  According to a fifth aspect of the present invention, there is further provided a connecting portion for partially connecting the peripheral edges of the first air bag and the second air bag with a surplus length. Any one pressure ulcer prevention device is provided.

  According to a sixth aspect of the present invention, there is provided the pressure ulcer prevention device according to the fifth aspect, wherein the connecting portion is configured to connect the corner portions of the air bag.

  According to the seventh aspect of the present invention, the first air bag and the second air bag are integrally constituted by three film-like members arranged in a stacked state, and the central film-like member and Provided is a pressure ulcer prevention device according to any one of the first to sixth aspects, characterized in that it is constituted by membrane members at both upper and lower ends.

  According to an eighth aspect of the present invention, the first air bag and the second air bag are each configured to be deformable so that the shape when inflated follows the shape of the user's buttocks. The pressure ulcer prevention device according to the second aspect is provided.

  According to the ninth aspect of the present invention, the first air bag and the second air bag are formed of the film-like member on the facing side as compared with the stretchability of the film-like member on the buttocks side of the user constituting each of the first air bag and the second air bag. The pressure ulcer prevention device according to the eighth aspect is characterized by being deformed so as to conform to the shape of the user's buttocks by increasing the elasticity.

  According to the tenth aspect of the present invention, the first air bag and the first air bag are further arranged so that the extension center part of each suspension part of the first air bag and the second air bag is located at the skeleton projecting part of the user. A pressure ulcer prevention device according to any one of the first to ninth aspects is provided, comprising a fixing member that fixes two air bags to the user.

According to an eleventh aspect of the present invention, the user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are the user's buttocks and the surface underneath. Configured to be positioned so as to be located at the pelvic protrusion site between
The tenth aspect is characterized in that the fixing member fixes the first air bag and the second air bag so that a part of the suspended portion of the second air bag is in a direction along the spine of the user. A pressure ulcer prevention device is provided.

According to a twelfth aspect of the present invention, the user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are the user's buttocks and the surface below it. Configured to be positioned so as to be located at the pelvic protrusion site between
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
The pressure ulcer prevention device according to the tenth aspect is provided with an encircling band provided on the main body portion and fixing the lumbar abdominal portion, the right thigh portion, and the left thigh portion of the user so as to surround each of them. To do.

According to a thirteenth aspect of the present invention, the user's skeletal protrusion is the user's pelvic protrusion, and the first air bag and the second air bag are the user's buttocks and the surface below the buttocks. Configured to be positioned so as to be located at the pelvic protrusion site between
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
A waist and abdominal zone that surrounds and fastens the user's waist and abdomen and is provided on the main body;
A pressure ulcer prevention device according to the tenth aspect, comprising: a crotch band provided at a lower end of the main body part, passing through the crotch part from the back of the buttocks, passing through the front part, and being fixed to the waist and abdomen part encircling band. provide.

According to the fourteenth aspect of the present invention, the user's skeletal protrusion is the user's pelvic protrusion, and the first air bag and the second air bag are the user's buttocks and the surface below the buttocks. Configured to be positioned so as to be located at the pelvic protrusion site between
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
The groin pressure ulcer prevention device according to the tenth aspect is provided with a connecting portion that is provided on the main body portion and is detachably connected to clothing already worn by the user.

  According to a fifteenth aspect of the present invention, the pelvic protrusion part is a sacral part, and the extension center part is provided in a central region of the first air bag and the second air bag. A hip pressure ulcer prevention device according to a second aspect is provided.

  According to a sixteenth aspect of the present invention, the extension center portion of each suspension portion is provided at a plurality of locations in each of the first air bag and the second air bag. The groin pressure ulcer prevention device according to any one of the fifteenth aspects is provided.

  In the pressure ulcer prevention apparatus according to the above aspect, the first air bag and the second air bag are further attached to a wheelchair so that the start ends of the first air bag and the second air bag are located at the sacrum of the user. It is also possible to adopt a configuration provided with a seating surface fixing member for fixing the seating surface.

  Moreover, the aspect fixed to said wheelchair WHEREIN: The said seat surface fixing member is provided in the position corresponding to the corner part of a said 1st air bag and a 2nd air bag, and fixes with the support | pillar which supports the seat surface of the said wheelchair. It is also possible to employ a configuration including a fixed string.

  The use of the wheelchair on the seating surface can prevent the pressure ulcer of the user who uses the wheelchair for a long time. Since the wheelchair has a structure in which the position of the buttocks hardly fluctuates during use, even if the apparatus of the present invention is used, the position of the pelvic protrusion can be suitably used without being displaced from the starting end.

  In general, the principle of prevention or treatment of pressure ulcers is that the avoidance of continuous compression to the local skin for 2 hours or more, that is, load decompression and load site movement and ensuring skin blood flow are the most important. According to the present invention, since the first air bag and the second air bag stacked in two layers have the structure of the hanging portions having different phases on the two-dimensional angle, respectively, by alternately supplying and exhausting air, Without inducing twisting of the pelvis and the bulging unit, the inflatable part surrounding the converging area of the suspension part starting end provided in the stacked air bag, that is, the load supporting part for levitation of the skeleton where the skeletal protrusion is located It can move reliably as a whole. Here, the skeletal protrusion means a pressure ulcer frequent site such as a pelvic protrusion, a rib protrusion, a spine protrusion, and a scapula protrusion in the supine position. It also means limb skeletal protrusions such as knee joints and elbow joints, rib cage, craniofacial bones, etc. in a special position on the operating table of the surgical patient, that is, lateral position, prone position, lithotripsy position and the like. In particular, in the pelvic projection part where the pelvis, which is the most frequent pressure ulcer occurrence part, protrudes to the epidermis side, a load decompression effect on the sacrum and left and right sciatic parts is obtained, and at the same time, By switching the load pressure, skin blood flow can be secured, and pressure ulcers on the user's buttocks can be prevented. It should be noted that the extension center portion with which the user's pelvic protrusion comes into contact does not necessarily have to be positioned at the center portion of the first air bag and the second air bag, and is appropriately positioned according to the use state and the body shape of the user. It may be changed.

  Moreover, according to the 3rd aspect of this invention, it comprises so that each suspension part of a 1st air bag and a 2nd air bag may be converged in the cross shape in the state which is not mutually joined in a start end part, In the extension center part where the abutment comes into contact, each air bag secures the air flow and the expansion height is suppressed to a level close to the suspension part, in other words, more reliably than the inflated part of the peripheral part, that is, the load support part. Since it is kept low and the load is avoided, pressure ulcers at the center of the buttock can be prevented.

  Moreover, the inside of an air bag is not divided | segmented into a closed partition by comprising the suspension part in each air bag so that a front-end | tip does not reach a lumen | bore edge part and it does not mutually join in a start end part. For this reason, one air supply / exhaust port is provided for each air bag, and each air bag easily circulates the air including the edge and center, and the pelvis is reliably lifted by moderate pressure. This makes it difficult for bulges and bottoms in the center to occur. This is because, in the configuration in which the air chambers are alternately arranged in an envelope shape as in Patent Documents 1 to 3, the air bag constituted by the section located in the central portion that receives the maximum load is closed by the load compression, and a considerable high pressure This is an advantageous configuration even for a problem in which there is a risk that the supply of air cannot be performed even with supply of air.

  According to the 4th aspect of this invention, the structure of the suspension part of a 1st air bag and a 2nd air bag is a cross shape extended radially from a center part, and the expansion height in the direction is low of a suspension part. To a certain extent. Therefore, it is certainly lower than the inflated portion of the air bag surface between the hanging portions, that is, the load supporting portion, and the inhibition of the pressure on the skin blood flow is suppressed. Further, since the two-dimensional angle phases are different from each other, at least in the time phase of the alternating pressurization cycle of the first and second air bags, at least via the cross route from the periphery. It is possible to secure blood flow toward the center of the buttocks, load depressurization, load site movement, and skin blood flow securing are effective, and it is possible to prevent pressure ulcers at the skeletal protruding site. In addition, pressure ulcers are less likely to develop in the peripheral part of the pelvis due to movement of the load site.

  Moreover, while the outer peripheral shape of a 1st and 2nd air bag can be comprised in the same shape, the extending direction of the suspension part of each air bag can be varied. Therefore, the structure of the connection part which connects partially the periphery of a 1st air bag and a 2nd air bag can be made easy.

  Further, according to the fifth aspect of the present invention, since the connecting portion is connected so that the peripheral portion is partially connected with an extra length, each of the air bags generated when the first or second air bag is inflated. By absorbing the difference in the planar dimensions, it is possible to prevent the pressure reduction effect from being lowered due to the tension of the membrane surface of the non-inflatable air bag, and to prevent the first and second air bags from being displaced from the specific position by the fixing member.

  According to the sixth aspect of the present invention, by connecting only the corners of each air bag, it is possible to efficiently absorb the difference in the planar outer shape when one of the air bags is inflated. Misalignment and the like can be prevented.

  In addition, at this time, it is also possible to comprise so that the shape at the time of expansion may be expanded and deformed so as to follow the shape of the user's buttocks. Specifically, the film-shaped part on the facing side is expanded and deformed so as to be convex toward the film-like member side on the facing side by increasing the contractibility of the film-shaped part on the facing side with respect to the film-shaped part on the buttock side. Can do.

  Further, according to the present invention, the first air bag and the second air bag are fixed to the user, so that the first and second air bags can be prevented from being displaced. Can be made.

  According to the eleventh aspect of the present invention, it is possible to press the buttocks divided into the left and right with the spine as the center, and it is easy to secure blood flow in the sacral direction.

  In addition, as a fixing member for fixing the first and second air bags to a specific location, the 12th aspect to the 14th aspect are easy to perform abdominal examination, urinary stool processing in the genital area, etc. The thing of a structure can be used conveniently.

  According to the fifteenth aspect of the present invention, the sacral region is a common pressure ulcer site, and by arranging an elongated central region in the central region of the first air bag and the second air bag, Load distribution can be performed more reliably.

  Further, according to the sixteenth aspect of the present invention, for example, the sacral region can be used with a plurality of extension center regions for decompressing the scapula protrusions on both sides or the rib protrusions on both sides, or in a seated state for a long time. Even in situations where more weight is applied to the left and right sciatic bones, it is possible to prevent pressure ulcers at the skeletal protruding parts by arranging a plurality of extension center parts at positions corresponding to the left and right sciatic bones. .

It is a mimetic diagram showing appearance composition of a buttocks pressure ulcer prevention device concerning a 1st embodiment of the present invention. It is a schematic diagram which shows the external appearance structure of the air bag unit of the buttocks pressure ulcer prevention apparatus of FIG. It is a top view which shows typically the structure of the 1st air bag of the buttocks pressure ulcer prevention apparatus of FIG. It is a disassembled perspective view which shows typically the structure of the 1st air bag of the buttocks pressure ulcer prevention apparatus of FIG. It is a perspective view at the time of pressurization which shows typically the composition of the 1st air bag of the groin pressure sore prevention device of Drawing 1. It is a top view which shows typically the structure of the 2nd air bag of the buttocks pressure ulcer prevention apparatus of FIG. It is a disassembled perspective view which shows typically the structure of the 2nd air bag of the buttocks pressure ulcer prevention apparatus of FIG. It is a perspective view at the time of pressurization showing typically the composition of the 2nd air bag of the groin pressure sore prevention device of Drawing 1. It is sectional drawing in the VV line of FIG. It is the example of a change of the hanging part of FIG. 5A. It is a perspective view which shows typically the state of an air bag unit when the 1st air bag and the 2nd air bag of the buttocks pressure ulcer prevention apparatus of FIG. 1 are pressurized alternately. It is a cross-sectional schematic diagram in the VII-VII line of FIG. It is a figure which shows the structure of the fixed clothing of the buttocks pressure ulcer prevention apparatus of FIG. It is a figure which shows the state equipped with the buttocks pressure ulcer prevention apparatus of FIG. 1 using the fixed clothing of FIG. 8A. It is a figure which shows the other structural example of the fixed clothing of the buttocks pressure ulcer prevention apparatus of FIG. 1, and has shown the state before fixation. It is a figure which shows the state which fixed the buttocks pressure ulcer prevention apparatus of FIG. 1 using the fixed clothing of FIG. 9A. It is a block diagram which shows typically the structure of an automatic air supply / exhaust apparatus. It is a timing chart which shows the cycle control example of the solenoid valve of the automatic air supply / exhaust apparatus of FIG. 10, and the change of the pressure of an air bag. It is a figure explaining the pressure distribution of the buttocks produced by operation | movement of the buttocks pressure ulcer prevention apparatus of FIG. It is a schematic diagram which shows the external appearance structure of the buttocks pressure ulcer prevention apparatus concerning 2nd Embodiment of this invention. It is a schematic diagram which shows the external appearance structure of the air bag unit of the buttocks pressure ulcer prevention apparatus of FIG. It is a disassembled perspective view of the air bag unit of the buttocks pressure ulcer prevention apparatus of FIG. It is a figure which shows the structure of the fixed clothing of the buttocks pressure ulcer prevention apparatus of FIG. It is a schematic diagram which shows the external appearance structure of the buttocks pressure ulcer prevention apparatus concerning 3rd Embodiment of this invention. It is a schematic diagram which shows the external appearance structure of the air bag unit of the groin pressure sore prevention apparatus of FIG. It is a figure which shows the state which attached the buttocks pressure ulcer prevention apparatus of FIG. 17 to the wheelchair. It is a schematic diagram which shows the other structural example of the air bag unit used for the buttocks pressure ulcer prevention apparatus of FIG. It is a figure which shows the state which the air bag unit of the modification used for the buttocks pressure ulcer prevention apparatus concerning embodiment of this invention inflated. It is a saddle type figure of the example which used the pressure ulcer prevention apparatus of this invention for the rib protrusion part. It is a schematic diagram of the example which used the pressure ulcer prevention apparatus of this invention on the operating table with respect to the prone position patient during an operation.

  Hereinafter, a groin pressure ulcer prevention device according to each embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic diagram showing an external configuration of a heel pressure ulcer prevention device according to a first embodiment of the present invention. The heel pressure ulcer prevention device 1 according to the present embodiment has a configuration in which an air bag unit 3 including two air bags is attached to a half-pants type fixed garment 2 as an example of a fixing member worn on a user's buttock. There is a device that is used by being connected to an automatic air supply / exhaust device (not shown), and more effectively preventing pressure ulcers that occur at the pelvic protruding portion, particularly the sacral region.

  The air bag unit 3 is housed in a bag-like housing portion 5 provided in the main body portion 4 of the fixed clothing 2 and is detachably fixed to the stationary clothing 2. The storage part 5 is configured to have a size approximately equal to the outer diameter of the air bag unit 3 to be described later, and connecting parts provided at the four corners of the air bag unit 3 so that the air bag unit 3 is not displaced in the interior. It is comprised so that it can connect with 19a, 19b (refer FIG. 2). The housing 5 is provided with holes for guiding the air supply / exhaust pipes connected to each air bag of the air bag unit 3 described later to the outside of the housing.

  FIG. 2 is a perspective view showing an external configuration of the air bag unit 3 used in the groin pressure sore prevention device according to the present embodiment. The air bag unit 3 has a substantially rectangular shape, and is configured such that the two air bags of the first air bag 11 and the second air bag 12 overlap in the thickness direction. In addition, in this embodiment, the 1st air bag 11 and the 2nd air bag 12 which comprise the air bag unit 3 are comprised by the square shape whose one side is 50 cm.

  When the first air bag 11 and the second air bag 12 are alternately supplied with air and are in a pressurized state, the suspension portion 13 has a 45-degree phase difference on the two-dimensional angle. , 14 are configured, and the first air bag 11 and the second air bag 12 are alternately in a pressurized state, so that the user's buttocks rise due to the respective inflated portions, while the central portion is a hanging portion. The pressure is reduced because it is suppressed to a low level and does not expand. In addition, by making the inflating load support part have a 45 degree phase difference in each air bag, the pressure distribution applied to the peripheral area of the sacral region changes, and the central part of the buttock and the peripheral part also prevent pressure ulcers To do.

  As shown in FIGS. 3A and 4A, the first air bag 11 and the second air bag 12 are generally rectangular bags when not filled with air, for example, as shown in FIGS. 3B and 4B. Further, the periphery of each of the two square film members 15a, 15b, 16a, and 16b is bonded to form a bag shape. As the membrane members 15a, 15b, 16a, and 16b constituting the air bags 11 and 12, a synthetic resin film having excellent flexibility and airtightness, such as polyurethane, for example, and having some elasticity is preferably used.

  In the present embodiment, each of the air bags 11 and 12 is formed in a bag shape by welding the peripheral edges of two rectangular membrane members each having a side length of about 50 cm. 14 is provided. As shown in FIG. 3B, FIG. 4B, and FIG. 5A as an example, the hanging portions 13 and 14 are made of films that are arranged in a state where the upper and lower ends are welded to the respective film members 15a, 15b, 16a, and 16b. Yes. As shown in FIG. 3A and FIG. 4A, the hanging portions 13 and 14 start from the extended central portions 18a and 18b located in the central region of the air bag, and the end portions 13b and 14b from the start end portions 13a and 14a have a lumen. They are arranged in a cross shape so as to extend radially so as not to reach the edge portions 17a, 17b. In addition, the starting end portions 13a and 14a are configured such that the respective hanging portions 13 and 14 are not joined to each other.

  5A is a cross-sectional view taken along the line VV in FIG. 4, and the hanging portion 14 is configured using a single film. In order to increase the adhesive strength with the membrane member, the deformation of FIG. As shown in the example, a structure such as a loop suspension that adheres to the upper and lower membrane members 15a, 15b, 16a, and 16b using cylindrical members may be employed.

  The height h of the hanging portions 13 and 14 is preferably about 4 cm or less, although it depends on the pressure of air filled in the air bag and the size of the air bag. If the height h of the hanging parts 13 and 14 is too low, the amount of inflation of the air bag is small and a sufficient effect for preventing pressure ulcers cannot be exhibited. Prone to instability. In addition, the height dimension h of the suspension parts 13 and 14 may have different heights along the length direction. For example, the height part h can also be configured to lower the central part of the suspension part.

  The suspension portions 13 and 14 provided in the first air bag 11 and the second air bag 12 are both cross-shaped, and as shown in FIGS. 3A and 4A, the extending directions are two-dimensional angles. The phase difference is 45 degrees.

  The suspension portion 13 of the first air bag 11 has a start end portion 13a arranged at an extension center portion 18a located in a substantially central region of the first air bag 11 and extends diagonally from the start end portion 13a. The suspending portion 14 of the bag 12 has a starting end portion 14 a disposed at an extension center portion 18 b located substantially in the central region of the second air bag 12, and extends from the starting end portion 14 a in the side direction. It is provided so as to have a phase difference of 45 degrees centering on the portion 13 and the extension center portion 18a. For this reason, as shown to FIG. 3C and FIG. 4C, when an air bag is pressurized, the location where an air bag expand | swells differs. That is, as shown in FIG. 3C, in the first air bag in which the hanging part 13 extends in the diagonal direction, the middle region of the side of the first air bag 11 is inflated most during pressurization, and the hanging part 14 is directed toward the side. As shown in FIG. 4C, the extended second air bag 12 expands most in the region near the corner of the second air bag 12 when pressurized. Therefore, as shown in FIG. 2, by arranging the first air bag 11 and the second air bag 12 in a stacked state, in this embodiment, the area to be pressurized as the whole air bag unit is about 45. It can be made different by the hanging parts arranged with a phase difference of degrees.

  In the present embodiment, the extension center portions 18a and 18b of the first air bag 11 and the second air bag 12 are provided in the center region, but the positions of the extension center portions 18a and 18b are not necessarily the center region. Not necessarily. The position can be appropriately changed so that the extension center portions 18a and 18b are located on the sacrum of the user according to the usage mode, the body shape of the user, and the like.

  As shown in FIG. 2, the first air bag 11 and the second air bag 12 are stacked and arranged so that the respective extension center portions 18 a and 18 b overlap with each other, and are connected to the corner portions. 19a and 19b are connected by the string member 21 so as to be connected in a stacked state. The string member 21 may be connected to the inside of the storage unit 5 and fixed so that the air bag unit 3 does not move in the storage unit 5, or the first air bag 11 and the second air bag 12 are connected. It may be just for doing.

  The first air bag 11 and the second air bag 12 are provided with one air supply / exhaust port 20a and 20b, respectively, and air is alternately sent and pressurized by an automatic air supply / exhaust device (see FIG. 10). It becomes a state. As described above, the suspended portion of the first air bag 11 and the second air bag 12 extends radially from the expansion center portions 18a and 18b of the air bag, and the terminal ends 13b and 14b do not reach the lumen edge portions 17a and 17b, but the start ends. Since the parts 13a and 14a are configured not to be joined to each other, the section formed by the hanging part in the inner cavity of the first air bag 11 and the second air bag 12 is not divided into sections that have an airtight configuration. In addition, there is an air inflow movement between the sections, and the entire area of each of the first air bag 11 and the second air bag 12 is expanded and contracted by supplying and exhausting air from the air supply and exhaust ports 20a and 20b. It is possible to easily control the automatic air supply / exhaust device to stably lift the pelvis in the left / right and up / down symmetry. .

  The degree of pressurization of each air bag 11, 12 by the automatic air supply / exhaust device can be, for example, about 10 to 50 mmHg, and particularly preferably 20 to 40 mmHg. Further, the time required for the cycle from the supply air pressurization to the exhaust is not particularly limited, and can be, for example, about 5 to 120 minutes in one cycle. What is necessary is just to determine these pressures and cycle time suitably according to a user's medical condition. In general, it is said that pressure ulcers are likely to occur by continuing local compression of the pelvic skeletal protuberance for about 2 hours or more in the same posture. To prevent this, one cycle should be shorter than this. Is preferred.

  FIG. 6 is a perspective view schematically showing the state of the air bag unit when the first air bag and the second air bag are alternately pressurized. FIG. 7 is a cross-sectional view of FIG. In both figures, the state shown in (a) shows the state when the second air bag 12 is pressurized and the first air bag 11 can be exhausted, and the state shown in (b) is the first air bag 11. Is shown in a state where the second air bag 12 can be evacuated.

  6 and 7, in the state (a), since the second air bladder 12 is pressurized, the expansion of the portion of the hanging portion 14 is suppressed, and the region in the vicinity of the corner portion is expanded. The first air bag 11 is in an exhaustable state, and its film surface shape is deformed so that the portion corresponding to the hanging portion 14 is in a concave state in accordance with the expanded shape of the second air bag.

  In the state of b) in FIG.6 and FIG.7, since the 1st air bag 11 is pressurized, the expansion | swelling of the part of the suspension part 13 is suppressed and the intermediate area | region of the edge is expanding. The second air bag 12 is in an exhaustable state and is deformed into a film surface shape that matches the expanded shape of the first air bag 11.

  Thus, by alternately pressurizing the first air bag and the second air bag, the inflated portion of the entire air bag unit changes with a phase difference of about 45 degrees on a two-dimensional angle, and the user's The buttock load support site moves with alternating pressurization cycles, avoids pressure ulcer onset risk time due to local continuous compression, and prevents pressure ulcer onset.

  Note that, in the alternate inflation of the first air bag and the second air bag, the connection portions 19a and 19b and the string member 21 are connected to each other with a certain length, and the first air bag 11 and the second air bag 11 are connected to each other. By connecting the air bag 12 to absorb the difference in plane dimensions caused by the pressure expansion of one of the air bags and the increase in the membrane area, It is possible to prevent the problem that the bag is not sufficiently inflated, and to prevent the positional displacement between the first air bag 11 and the second air bag 12. That is, by providing a surplus length in the connecting portions 19a, 19b and the string member 21, the other air bag is softly unevenly deformed along the outer shape of the inflated air bag, and an increase in the surface dimension caused at that time is generated. The connecting portions 19a and 19b and the string member 21 can be supplemented.

  FIG. 8A is a diagram showing a configuration of a fixed garment of the buttocks pressure ulcer prevention device according to the present embodiment. FIG. 8B is a diagram showing a state in which the device for preventing pressure ulcers according to the present embodiment using the fixed clothes of FIG. 8A is mounted. As described above, the fixed clothing 2 is provided with the storage portion 5 on the back side of the main body portion 4, and a member for fixing the air bag unit at a specific position by storing the air bag unit 3 therein. It is. The main body portion 4 of the fixed clothes 2 has a size that can cover the user's buttocks, and the upper waist portion of the main body portion 4 includes waist and abdominal bandages 22a and 22b and right thigh bandage bands 23a and 23b, Left thigh surrounding bands 24a and 24b are provided.

  The waist fasteners 25a, 22b, the right thigh surrounding bands 23a, 23b, and the left thigh surrounding bands 24a, 24b are provided with hook-and-loop fasteners 25, 26, 27, respectively. The waist and abdomen, the right thigh, and the left thigh are each surrounded and surrounded.

  The main body 4 is configured to cover the buttocks to such an extent that they do not loosen from the back side, and at the same time, fasten the respective surface fasteners at the front side of the waistband, right thigh, and left thigh encircling band. In the case of the fixed garment 2 having this configuration, if the user is placed in a supine position on a plane developed with the back surface of the main body 4 facing the bed surface, the waist, abdomen, right thigh, and left thigh It is possible to wear on the user by holding the bandage of the part together and holding it together. That is, the user can wear clothes without passing through the hem by bending and extending the user's waist, abdomen, right thigh, and left thigh.

  The fixing of the waist and abdomen surrounding bands 22a and 22b, the right thigh surrounding bands 23a and 23b, and the left thigh surrounding bands 24a and 24b is not limited to the one using the hook-and-loop fasteners, but other fixings. Means such as buttons, hooks, etc. may be used.

  Drawing 9A is a figure showing other examples of composition of fixed clothing of a buttocks pressure ulcer prevention device of this embodiment, and shows a state before fixation. FIG. 9B is a diagram illustrating a state in which the heel pressure ulcer prevention device according to the present embodiment using the fixed clothes of FIG. 9A is fixed.

  As described above, the fixed clothes 2a according to the modified example has the storage part 5 provided on the back side of the main body part 4, and the air bag unit 3 is stored in the storage part 5 to fix the air bag unit at a specific position. To do. The body part 4 of the fixed garment 2a has a size that can cover the user's buttocks, the waist and abdomen fixing bands 22c and 22d on the upper end side of the body part 4, and the thigh fixing band on the lower end side. 23c and 23d are provided.

  The waist and abdomen fixing bands 22c and 22d and the thigh fixing bands 23c and 23d are respectively provided with hook-and-loop fasteners 25 and 26, which are fastened to the underwear worn by the user, and the waist and abdomen fixing band 22c. , 22d and thigh fixing bands 23c, 23d are integrated and fixed with the underwear, respectively. In other words, for example, diapers are often used as underwear for patients undergoing bedside treatment for a hospital bed. Depending on the type of underwear, the underwear is composed of a nonwoven fabric or the like, and is configured so as to be secured to a hook-and-loop fastener. Things exist. As the hook-and-loop fasteners 25 and 26 used in the fixed clothes 2a of this modification, those that can be directly fixed to the underwear are used.

  The main body 4 covers the buttocks so as not to loosen from the back side, and at the same time, the hip fasteners provided on the waist and abdomen fixing bands 22c and 22d and the thigh fixing bands 23c and 23d in the waist and left and right thighs. 25 and 26 are fastened to the attachment part 27a of the underwear. If it is the fixed clothes 2 of this structure as above-mentioned, if a user is put on the plane which developed the back of the main-body part 4 toward the bed surface in the supine position, waist and abdomen fixing bands 22c, 22d, The thigh fixing bands 23c and 23d can be fastened to the underwear at an arbitrary position. That is, the user can wear clothes without passing through the hem by bending and extending the user's waist, abdomen, right thigh, and left thigh.

  FIG. 10 is a block diagram schematically showing a configuration of an automatic air supply / exhaust device used in the buttocks pressure ulcer prevention device according to the present invention. As shown in FIG. 10, the automatic air supply / exhaust device 80 includes a compressed air supply source 81 such as a compressor, a tank 82 for suppressing pulsation of compressed air connected to the compressed air supply source 81, A controller 84 having a pressure sensor 83; a left solenoid valve 86L and a right solenoid valve 86R connected to the tank 82 by a supply pipe 85; and a supply port for the supply pipe 85, the left solenoid valve 86L and the right solenoid valve 86R. The left check valve 87L and the right check valve 87R provided between the two.

  The left solenoid valve 86L or the right solenoid valve 86R is a known three-way valve provided with a supply port, a distribution port, and an exhaust port, and opens and closes the three-way valve with a spherical valve body (not shown) operated by a solenoid unit. Has been. The supply port is connected to a compressed air supply source 81 via a left check valve 87L and a right check valve 87R, a supply pipe 85, and the tank 82. The distribution ports are connected to the corresponding air supply / exhaust ports 20 a and 20 b of the first air bag 11 and the second air bag 12 through pressure-resistant tubes 89.

  The compressed air from the compressed air supply source 81 passes through the tank 82, the supply pipe 85, the left check valve 87L, and the right check valve 87R, and is supplied into the supply port of the left solenoid valve 86L or the right solenoid valve 86R. The air is supplied to the first air bag 11 and the second air bag 12 from the distribution port of the solenoid valve through the air supply / exhaust ports 20a and 20b. The supplied compressed air is not backflowed by the check valve but is held in each air bag. When the valve body of the left solenoid valve 86L or the right solenoid valve 86R moves and the exhaust port communicates with the distribution port, the compressed air in the air bag is exhausted. The exhausted compressed air is discharged into the automatic air supply / exhaust device 80 and further discharged from a vent (not shown) provided in the automatic air supply / exhaust device 80.

  As indicated by a broken line in FIG. 10, the control unit 84 is electrically connected to the compressed air supply source 81 and the left solenoid valve 86L or the right solenoid valve 86R to control the compressed air supply source 81, and the left solenoid valve 86L. Alternatively, the right solenoid valve 86R is ON / OFF controlled.

  The switch mechanism provided in the automatic air supply / exhaust device 80 is turned on to start pressurization / decompression, that is, supply / exhaust. When air supply / exhaust is started, the compressed air supply source 81 is activated to supply compressed air, and the control unit 84 starts ON / OFF of the left solenoid valve 86L or the right solenoid valve 86R. The control unit 84 turns ON / OFF the left solenoid valve 86L or the right solenoid valve 86R according to a cycle stored in advance.

  The pressure sensor 83 communicates with the tank 82 through a pipe 88 and measures the pressure in the tank 82. If the left solenoid valve 86L or the right solenoid valve 86R is ON, the supply port and the distribution port of the solenoid valve communicate with each other, and the air bag connected to the tank 82 and the distribution port of the solenoid valve has the same pressure. The pressure sensor 83 measures the pressure of the air bag body.

  In order to set a different internal pressure for each air bag, the control unit 84 performs proportional control of the power supplied to the compressed air supply source 81 when the compressed air supply source 81 is driven to flow compressed air into the air bag. Is going. In addition, when the set pressure value and the pressure value measured by the pressure sensor 83 are different, the control unit 84 changes the conduction angle in order to quickly approach the set pressure.

  FIG. 11 is a timing chart showing a cycle control example of the solenoid valve of the automatic air supply / exhaust device and a change in pressure of the air bag. As shown in FIG. 11, in the present embodiment, the left solenoid valve 86L and the right solenoid valve 86R are connected to switch between supply and exhaust of the first air bag 11 and the second air bag 12, respectively. In the present embodiment, the left solenoid valve 86L and the right solenoid valve 86R are controlled so that the switches are alternately turned on and off.

  When the switch is switched from OFF to ON, pressurized air is sent to the air bag, the pressure in the air bag rises to a predetermined pressure set in advance, and the air bag is inflated and deformed. On the other hand, when the switch is switched from ON to OFF, the air in the air bag is exhausted by the weight of the user, and the air bag becomes a film surface shape. In the present embodiment, the supply / exhaust cycle of the first and second air bags is about 20 to 60 minutes, and the air supply time of each air bag is about 3 to 10 minutes. However, the present invention is not limited to this. Any air supply / exhaust cycle can be used.

  As described above, since it takes time to reach a predetermined pressure after the switch is switched, in the present embodiment, the switching timing of the left solenoid valve 86L and the right solenoid valve 86R is controlled to be performed simultaneously. By controlling in this way, air remains in any of the air bags, so that the occurrence of bottoming can be prevented and the occurrence of pressure sores can be effectively suppressed.

  FIG. 12 is a diagram illustrating the pressure distribution of the buttocks generated by the operation of the buttocks pressure ulcer prevention device according to the present embodiment. 12A shows a state when the second air bag 12 is pressurized and the first air bag 11 can be evacuated, and FIG. 12B shows a state where the first air bag 11 is pressurized and the second air bag 11 is evacuated. The state when the air bag 12 is in an exhaustable state is shown. In FIG. 12, an arrow indicates blood flow.

  As described above, by alternately pressurizing the two air bags 11 and 12, the cross region corresponding to each hanging portion is suppressed from being expanded to become the low pressure region 102, and the expansion of the other portions is increased to increase the high pressure region. The inflated portion in the entire air bag unit 3 is changed with a phase difference of about 45 degrees so that the distance becomes 101. The suspension portions 13 and 14 of the first air bag 11 and the second air bag 12 are configured to converge in a cross shape in a state where they are not joined to each other at the extension center portions 18a and 18b. At the starting end that comes into contact, each air bag ensures the flow of air while the expansion height is suppressed to a level close to that of the suspended portion, in other words, it is reliably ensured by the inflated high-pressure region 101, that is, the load support portion. Since it is unloaded and avoids the load, pressure ulcers at the center of the buttock can be prevented. In addition, in the surrounding area, since the cross-suspended region of the two air bags 11 and 12 has a phase difference of about 45 degrees, the inflated high-pressure region 101, that is, the buttocks load supporting portion moves with the alternating pressurization cycle. Avoid pressure ulcer onset time due to local continuous pressure and prevent pressure ulcer development around the buttock.

  Also, as shown in FIG. 12 (a), when the second air bladder 12 is pressurized, the suspension portion 14 disposed along the user's spinal axis 100 is disposed. The pressure regions 101 are located on the left and right sides of the two, and the low pressure region 102 is generated between the respective pressure regions, that is, in the pressure corresponding to the hanging portion 14. By generating such a pressure distribution, blood flow through the low-pressure region 102 to the extension center portions 18a and 18b where the sacrum is located is ensured as indicated by arrows.

  Also, as shown in FIGS. 12 (a) and 12 (b), each cross-shaped suspension portion extending radially from the first and second air bags and arranged with a phase difference of 45 degrees on a two-dimensional angle. 13 and 14, the height of the air bag is suppressed to the height of the suspended portion even by pressurizing the air bag. In other words, the height is more reliable than the inflated high pressure region 101, that is, the load supporting portion. The pressure region 102 is low and the inhibition of pressure on skin blood flow is suppressed. And in any time phase of the alternating pressurization cycle of the first and second air bags, the center of the buttock via the cross route having a phase difference of at least 45 degrees from the periphery as shown by the arrows The blood flow in the direction can be secured, and the pressure reduction of the load and the skin blood flow securing work effectively, and it is possible to prevent pressure ulcers in the sacrum.

  In addition, as shown in FIG. 12, the heel pressure ulcer prevention device according to the present embodiment is provided in a size that covers the user's buttock, and thus is lightweight and simple. It does not cause the body to float alternately, so it does not cause twisting with the pelvis or spine. Furthermore, it has a two-layer laminated air bag structure, and the pelvis can always be lifted even by alternating air pressure, so that the problem of so-called bottom is solved.

In the present embodiment, the suspension portions 13 and 14 are configured in a cross shape in order to easily secure a necessary area for supporting the pelvic load. That is, it is generally known that when the human body is supine, the sacral region takes over 40% of body weight. In order to support this with a load pressure of 30 mmHg (41 g / cm ² ), which is a pressure ulcer risk pressure, depending on the weight of the user, if the body weight is 100 kg, the area needs to be about 1000 cm ² . Supporting this at the circular expansion site corresponds to having a diameter of about 15 cm or more. If this is to be obtained within a sufficient area covering the pelvis, a square with a side of 50 cm is obtained by dividing the square into four parts, and a cross-shaped suspension part is used to reliably move the position of the four expansion sites supporting the load. Were arranged with a phase difference of 45 degrees. By adopting this configuration, the load can be efficiently supported. That is, reliable decompression of the extension center portions 18a and 18b and stable load switching of the pelvis can be performed, and pressure ulcers near the sacrum can be prevented.

  In addition, the buttocks pressure ulcer prevention apparatus concerning this embodiment is not limited to the structure as described in each drawing, It is possible to implement by various correspondence. For example, the hanging portions provided in each air bag are all cross-shaped, but may have other shapes. .

(Second Embodiment)
A hip sore prevention apparatus according to a second embodiment of the present invention will be described. FIG. 13: is a schematic diagram which shows the external appearance structure of the buttocks pressure ulcer prevention apparatus concerning 2nd Embodiment of this invention. Since the buttocks pressure ulcer prevention device 31 according to the second embodiment shown in FIG. 13 has a part of the configuration in common with the buttock pressure ulcer prevention device 1 according to the first embodiment, differences will be mainly described below.

  The groin pressure sore prevention device 31 according to the present embodiment has a configuration in which an air bag unit 33 integrally provided with two air bags is attached to a fixed garment 32 as an example of a fixing member worn on a user's buttocks. Yes, and connected to an automatic air supply / exhaust device (not shown).

  The air bag unit 33 is housed in a bag-shaped housing portion 35 provided in the main body portion 34 of the fixed clothes 32 and is detachably fixed to the fixed clothes 32. The housing part 35 is provided with a hole for guiding an air supply / exhaust pipe connected to each air bag of the air bag unit 33 described later to the outside of the housing part.

  FIG. 14 is a perspective view showing an external configuration of an air bag unit used in the groin pressure sore prevention device according to the present embodiment. FIG. 15 is an exploded perspective view of the air bag unit of the buttocks pressure ulcer prevention device according to the present embodiment. The air bag unit 33 is configured to demarcate two air bags, a first air bag 41 and a second air bag 42, which are constituted by three substantially circular membrane members. When the first air bag 41 and the second air bag 42 are alternately supplied and exhausted to be in a pressurized state, the first air bag 41 and the second air bag 42 are configured so that the inflated portions are different from each other. Thus, the pressure distribution applied to the user's buttocks is changed to prevent hip sores.

  As shown in FIG. 13, the first air bag 41 and the second air bag 42 are formed, for example, by bonding tongue-like connecting members 46 provided on the periphery of two film members into a bag shape. is there. As the film members 45a, 45b, and 45c constituting the air bags 41 and 42, for example, a synthetic resin film having excellent flexibility and airtightness such as polyurethane is preferably used.

  As shown in FIG. 15, the connecting member 46 is connected to an attachment member (not shown) provided in the storage unit 35 in order to prevent displacement in the storage unit 35. In this embodiment, although provided in three places, the number is not specifically limited.

  Suspension portions 43 and 44 are provided in the inner cavities 48 and 49, respectively. As shown in FIG. 15, as an example, the upper and lower ends are welded to the respective film members. Moreover, it is comprised so that it may extend radially from the expansion | extension center part 18a, 18b of an air bag, and the termination | terminus 43b, 44b may not reach a periphery, but it may not join mutually in the start end part 43a, 44a.

  As shown in FIG. 15, the suspension portions 43 and 44 provided in the lumens respectively constituted by the first air bag 41 and the second air bag 42 are configured in a Y shape with different extending directions. Has been. For this reason, when each air bag is pressurized, the location which an air bag expands differs. Therefore, as shown in FIG. 15, the area | region pressurized as the whole air bag unit can be varied by arrange | positioning in the state which laminated | stacked the 1st air bag 41 and the 2nd air bag 42. FIG. In the present embodiment, the height of the suspension parts 43 and 44 is slightly lower than that of the suspension part according to the first embodiment, although it depends on the pressure of the air filled in the air bag and the size of the air bag. It is preferable to do.

  The first air bag 41 and the second air bag 42 are provided with one air supply / exhaust port 50a and 50b, respectively, and air is alternately sent by an automatic air supply / exhaust device (not shown). It becomes. By alternately pressurizing the first air bag and the second air bag, the expanding portion of the entire air bag unit changes, and the pressure distribution applied to the user's buttocks changes.

  FIG. 16 is a diagram illustrating a configuration of a fixed garment of the buttocks pressure ulcer prevention device according to the present embodiment. As described above, the fixed clothing 32 is provided with the storage portion 35 on the back side of the main body portion 34, and by storing the air bag unit 33 therein, the air bag unit 33 is fixed at a specific position. It is a member. The main body 34 of the fixed garment 32 has a size that can cover the user's buttocks, and the upper end side of the main body 34 passes through the waist and abdomen surrounding bands 52a and 52b and the back of the buttocks through the crotch. A crotch band 53 is provided that is fixed by the waist and abdomen surrounding band.

  The waist and abdomen surrounding bands 52a and 52b and the crotch band 53 are provided with hook-and-loop fasteners 55, 56, and 57, respectively, and these are fastened to fix the user's buttocks.

  By comprising in this way, the expansion location in the whole air bag unit 33 is changed so that the area | region according to the pressurized air bag may become high by pressurizing the two air bags 31 and 32 alternately. Thereby, pressure ulcers are prevented by dispersing pressure applied to the user's buttocks.

  The heel pressure ulcer prevention device according to the present embodiment can ensure the blood flow to the center of the buttock by dispersing the pressure applied to the user's buttock, thereby preventing the pressure ulcer on the buttock. Moreover, since it is provided as a size that covers the user's buttocks, it is lightweight and simple, and does not cause pelvic torsion when the pelvis is lifted. Furthermore, since the air layer has a two-layer structure, a so-called bottom problem does not occur.

(Third embodiment)
A hip ulcer prevention apparatus according to a third embodiment of the present invention will be described. FIG. 17 is a schematic diagram showing an external configuration of a heel pressure ulcer prevention device according to a third embodiment of the present invention. FIG. 18 is a perspective view showing an external configuration of an air bag unit used in the buttocks pressure ulcer prevention device according to the present embodiment. Since the buttocks pressure ulcer prevention device 61 according to the third embodiment shown in FIG. 17 has a part of the configuration in common with the buttocks pressure ulcer prevention device 1 according to the first embodiment, differences will be mainly described below.

  The buttocks pressure ulcer prevention device 61 according to the present embodiment includes a seat surface fixing member 64 that is fixed so as to be mounted on the seat surface of a wheelchair and an air bag unit 63 that includes two air bags. And connected to an automatic air supply / exhaust device 80 (see FIGS. 10 and 19).

  The air bag unit 63 has substantially the same configuration as the air bag unit 3 of the first embodiment, and is configured to be approximately the same size as the seat surface of the wheelchair. The height of the suspension parts 73 and 74 is preferably about 4 cm or less, although it depends on the pressure of the air filled in the air bag and the size of the air bag. The air bag unit of the first embodiment 3 may be configured to be slightly lower than the hanging portions 13 and 14 used in the third embodiment. Further, the corners of the first air bag 71 and the second air bag 72 of the air bag unit 63 are connected by a connecting member 69. Moreover, since it is used for pressure ulcer prevention in a sitting posture, the position of the start end is shifted from the central region of the air bag.

  FIG. 19 is a diagram illustrating a state in which the hip sore prevention device according to the present embodiment is attached to a wheelchair. As shown in FIG. 17, the seat surface fixing member 64 mounts a bag-like main body portion 64 a that houses the air bag unit 63 on the seat surface of the wheelchair 90, and is fixed by fixing strings 65, 66, 67, and 68.

  The fixed strings 65, 66, 67, and 68 constitute a pair, and are respectively provided at the squares of the main body portion 64a. Each of the fixing strings is fixed so that the main body portion 64a is not displaced on the seating surface of the wheelchair 90 by being bound so as to pass through the column of the wheelchair.

  With this configuration, by alternately pressurizing the two air bags 71 and 72, the expansion location in the entire air bag unit 63 is changed so that the area corresponding to the pressurized air bag is increased ( (See FIG. 18). Thus, pressure ulcers are prevented by dispersing and moving the pressure applied to the user's buttocks.

  The heel pressure ulcer prevention device according to this embodiment can secure blood flow to the center of the buttock by dispersing and moving the pressure applied to the user's buttock, thereby preventing pressure ulcer in the buttock. Moreover, since it is provided as a size that covers the user's buttocks, it is lightweight and simple, and does not cause pelvic torsion when the pelvis is lifted. Furthermore, since the air bag unit has a two-layer structure, a so-called bottom problem does not occur.

  Moreover, in the said embodiment, in order to prevent pressure ulcers around the sacrum as the pelvic protrusion, the first air bag and the second air bag are each provided with a radial suspension portion by a single extension center portion. For example, in the sitting posture, the left and right sciatic bones in addition to the sacrum (coccyx) are the most common pressure ulcers. For this reason, in order to prevent pressure ulcers in these parts, it is also possible to provide a plurality of suspension parts so that the extension center parts of the suspension parts are respectively arranged at locations corresponding to the sacrum (coccyx) and ischia It is.

  FIG. 20 is a schematic diagram illustrating another configuration example of the air bag unit used in the groin pressure ulcer prevention device according to the third embodiment. The air bag unit 63a according to this modification is different in the configuration of the suspension portions 73c and 74c provided in the first air bag 71c and the second air bag 72c. In FIG. 20, the suspended portion 73c of the first air bag 71c is indicated by a broken line, but this is for easy identification in the diagram showing the superimposed state, and the actual suspended portion is intermittent. It is not meant to be provided.

  The suspension part 73c of the first air bag 71c is configured to extend in a cross shape in a direction inclined obliquely with respect to the side of the first air bag 71c from the extension center portions 18a provided at two places. In addition, the suspension portion 74c of the second air bag 72c is configured to extend in a cross shape in a direction along the side of the second air bag 72c from the extension center portions 18b provided at two places.

  With this configuration, the extension center portions 18a and 18b can be arranged at positions corresponding to the left and right sciatic bones in which the pelvis easily protrudes in a sitting state, and the decompression of the extension center portions 18a and 18b can be reliably reduced. It is possible to enable stable load switching of the part.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. In addition, by appropriately combining arbitrary embodiments of the above-described embodiments, the effects possessed by them can be produced.

  For example, as shown in FIG. 21, the first air bag and the second air bag can be configured to be deformed so as to follow the shape of the user's buttocks when inflated. Specifically, this can be realized by three-dimensionally sewing the membrane members 15a, 15b, 16a, and 16b. Further, as another means, the membrane member 15a, 16a on the buttock side is made of a material that is less likely to be stretched than the membrane member 15b, 16b on the facing side, so that the membrane member 15b, 16b on the facing side is expanded during deformation. It can be greatly stretched and deformed into a convex downward state as shown.

  For example, it is preferable that the structure of the suspension part provided in the 1st air bag and the 2nd air bag is not what divides | segments a lumen | bore into a partition which becomes an airtight structure. For example, in the present embodiment, the lumen is formed as a single section by not reaching the central portion and the lumen peripheral edge, but it reaches the lumen peripheral edge from the central portion and includes four lumens. When dividing into compartments, provide a through-hole in the middle part of the suspension, and configure each compartment to communicate without being completely partitioned by the suspension, so that each compartment is not airtight. can do.

  Furthermore, each of the above embodiments is a device for preventing pressure ulcer used around the user's pelvis, but it can also be suitably used for other pressure ulcer sites. For example, as shown in FIG. 22, even if the position and angle of the toe, ankle, calf and the like are changed with respect to the rib protrusion 111, the skin blood flow to the rib is not inhibited. This is a pressure ulcer prevention device 112 capable of efficiently performing pressure. As shown in FIG. 22, the inlet portions of the two air supply hoses 20a and 20b communicating with each of the two-layer air bags are installed in the vicinity of one corner of the air bag unit, and the two hoses are bundled and used. May be.

  Furthermore, in a patient during operation in the prone position as shown in FIG. 23 (A), a face part 121, a shoulder joint part, a bilateral iliac part 122, In order to reduce the load pressure of the knee joints 123 on both sides, the extension center portions 18a and 18b of the suspension as shown in FIG. 23B are set at a plurality of positions, and a plurality of pressure ulcer prevention devices 124 are used to prevent pressure ulcers. At the same time, it is possible to secure a stable surgical position. Since the pressure sore prevention device 124 according to the present invention is configured to inflate and contract the two air bags alternately, it is possible to reduce the change in the overall thickness of the automatic air supply / exhaust device by controlling the air supply / exhaust timing. Is possible. For this reason, even if it is used for an operating table, the operative field does not move greatly up and down, and it can be used for preventing pressure ulcers of patients during surgery in the prone position.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. In addition, by appropriately combining arbitrary embodiments of the above-described embodiments, the effects possessed by them can be produced.

1,31,61 Hip sore prevention device 2,2a, 32 Fixed clothing 3,33,63 Air bag unit 4,34 Main body part 5 Storage part 11,41,71,71c First air bag 12,42,72,72c Second air bladder 13, 14, 43, 44, 73, 74, 73c, 74c Hang 13a, 14a, 43a, 44a Start end 13b, 14b, 43b, 44b End 15a, 15b, 16a, 16b, 45a, 45b, 45c Membrane members 17, 48, 49 Lumens 17a, 17b Lumen edge portions 18a, 18b Elongation center portions 19a, 19b Connection portion 21 String members 20a, 20b, 50a, 50b Air supply / exhaust ports 22a, 22b, 52a, 52b Lumbar and abdominal band 23 Right thigh 23a, 23b Right thigh band 24 Left thigh 24a, 24b Left thigh band 25, 26, 27, 55, 56, 57 Surface fastener 35 Storage section 46, 69 Connecting member 53 Crotch belt 64 Seat surface fixing section 65, 66, 67, 68 Fixed string 80 Automatic supply / exhaust device 81 Compressed air supply source 82 Tank 83 Pressure sensor 84 Control section 85 Supply pipe 86R Right Solenoid valve 86L Left solenoid valve 87R Right check valve 87L Left check valve 88 Tube 89 Pressure-resistant tube 90 Wheelchair 100 Spinal axis 101 Pressurized region 102 Low pressure region 111 Radius protrusion 112 Pressure ulcer prevention device 120 Operating table 121 Face 122 Intestine Bone 123 Knee joint 124 Pressure ulcer prevention device

Claims (15)

A suspended portion provided in the lumen and extending radially from the starting end; a first air bag having a supply and exhaust port for supplying and exhausting air to and from the lumen;
A suspension part provided in the lumen and extending radially from a starting end; and a supply / exhaust port for supplying and exhausting air to and from the lumen. A second air bag arranged in a state of being stacked on the first air bag so as to have a two-dimensional angular phase difference from the radial extension direction of each suspension part of the first air bag of the part ,
The first air bag and the second air bag are arranged between the user's body and the surface under the user's body so that the extension center portion is located at the skeleton projecting portion of the user, and alternately from the air supply / exhaust port. the supply and exhaust to,
Characterized Rukoto which having a connecting portion for peripheral surplus portions connected with the said first air bag and second air bag, deflating formula bedsore prevention device.   The user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are located at the pelvic protruding part between the user's buttocks and the surface below it. The inflatable / deflection type pressure ulcer prevention device according to claim 1, wherein the device is configured so as to be arranged.   The suspended portions of the first air bag and the second air bag are configured so that the terminal ends do not reach the lumen edge and are not joined to each other at the start end. The pressure ulcer prevention apparatus as described.   The first air bag and the second air bag are configured in a rectangular shape, the hanging portion of the first air bag extends in a cross shape in a diagonal direction from the starting end portion, and the hanging portion of the second air bag extends from the starting end portion. The pressure ulcer prevention device according to any one of claims 1 to 3, wherein each device is configured to extend in a cross shape in the side direction. The pressure ulcer prevention device according to claim 4 , wherein the connecting portion is configured to connect corner portions of the air bag. The first air bag and the second air bag are integrally formed by three film-like members arranged in a stacked state, and each is constituted by a central film-like member and film members at both upper and lower ends. The pressure ulcer prevention device according to any one of claims 1 to 5 , wherein the device is a pressure ulcer prevention device.   The pressure ulcer prevention according to claim 2, wherein each of the first air bag and the second air bag is configured to be deformable so that the shape when inflated follows the shape of the buttocks of the user. apparatus. The first air bag and the second air bag increase the stretchability of the membrane member on the facing side as compared with the stretchability of the membrane member on the buttocks side of the user that constitutes each of the first air bag and the second air bag. The pressure ulcer prevention device according to claim 7 , wherein the pressure ulcer prevention device is deformed so as to conform to a shape of the heel portion of the pressure ulcer. Further, the first air bag and the second air bag are provided to the user such that the extension center portion of each hanging portion of the first air bag and the second air bag is positioned at the skeleton projecting portion of the user. The pressure ulcer prevention device according to any one of claims 1 to 8 , further comprising a fixing member to be fixed. The user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are located at the pelvic protruding part between the user's buttocks and the surface below it. Configured to be arranged to
The fixing member, and a part of the suspended portion of the second air bag is fixed to the first air bag and second air bag such that the direction along the spine of a user, according to claim 9 The pressure ulcer prevention device according to 1. The user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are located at the pelvic protruding part between the user's buttocks and the surface below it. Configured to be arranged to
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
The pressure ulcer prevention device according to claim 9 , further comprising an encircling band that is provided on the main body and fixes the user's lower back and abdomen, right thigh, and left thigh. . The user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are located at the pelvic protruding part between the user's buttocks and the surface below it. Configured to be arranged to
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
A waist and abdominal zone that surrounds and fastens the user's waist and abdomen and is provided on the main body;
The pressure ulcer prevention according to claim 9 , further comprising: a crotch band provided at a lower end of the main body part, passing through the crotch part from the back of the buttock, passing through the front part, and being fixed to the waist and abdomen bandage band. apparatus. The user's skeletal protruding part is a user's pelvic protruding part, and the first air bag and the second air bag are located at the pelvic protruding part between the user's buttocks and the surface below it. Configured to be arranged to
The fixing member is
A main body that contacts the user's buttocks and stores the first air bag and the second air bag;
The pressure ulcer prevention device according to claim 9 , further comprising a connecting portion that is provided on the main body portion and is detachably connected to clothing already worn by the user.   The said pelvis protrusion site | part is a site | part of a sacrum, The expansion | extension center site | part of each said suspension part is provided in the center area | region of the said 1st air bag and the 2nd air bag, The Claim 2 characterized by the above-mentioned. Pressure ulcer prevention device. In each extension center portion of each of the hanging portions of the first air bag and second air bag, characterized in that it is provided in a plurality positions, according to any one of claims 1 to 1 4 Pressure ulcer prevention device.

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