JP2007301252A - Bed leaving detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bed leaving detector which reliably detects leaving from a bed at a low cost. <P>SOLUTION: Using a nurse call system wherein a push button switch 17 for a patient to perform a depression operation is provided at a bed provided with a bed fence 9 having an opening 13 through which a patient can pass at one side part, a base plate 15 is mounted to the bed fence 9, an opening and closing door 16 is connected turnably to the side edge of the base plate 15, and the switch 17 is detachably held by a metal fitting 18 at the lower end of the base plate 15. When the door 16 is opened by a predetermined angle of ≥θ° from a closing position, a depressing member 19 depresses the push button 17a of the switch 17. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bed leaving detection apparatus that can reliably detect bed leaving from a patient's bed using an existing nurse call system installed in a hospital, a care facility, or the like.

  In recent years, an increasing number of patients are receiving rehabilitation treatment in hospitals and nursing homes for the purpose of expanding daily activities such as movement, changing clothes, eating, washing, bathing, excretion, or activities of daily living (abbreviated as ADL) In particular, an increase in elderly dementia patients is remarkable.

  Also, in hospital wards or medical wards, falling and falling when leaving the bed of elderly patients who are difficult to sit, stand and walk are caused by physical factors. Such elderly falls and falls can lengthen hospital stays due to injury and prevent ADL recovery as well as induce complications. Therefore, in rehabilitation related facilities such as hospitals and care facilities, various measures such as adopting a four-point bed fence surrounding the four sides of the bed have been implemented, but sufficient effects have not been achieved.

  The four-point bed fence described above has no gap at the entrance and exit of the bed, so patients with dementia may move over the bed fence, but the behavioral restraint on the patient gives a sense of restraint and the patient's needs, The lack of basic requirements that are indispensable for humans to live a social life cannot be satisfied, resulting in worsening dementia and inhibiting the spread of ADL.

  Conventional techniques for preventing the patient from falling and falling when leaving the bed include: (1) a device that detects the patient's home by laying a pressure sensor under the mat of the bed (for example, Patent Document 1; 2), (2) a device for detecting that the patient has pushed down the bed fence (see, for example, Patent Document 3), and (3) a sheet laid on the floor on the side of the bed that the foot is on the floor. A device for detecting by a state sensor (see, for example, Patent Document 4) is well known.

JP 2003-265546 A JP 2000-105885 A Japanese Patent Laid-Open No. 8-257071 Registered Utility Model No. 305037

  In the prior art described in Patent Documents 1 and 2, since the pressure sensor is laid under the mat of the bed, the patient's turn over and long sitting position on the bed are erroneously detected, and the detection accuracy is low. There is.

  Moreover, in the prior art described in patent document 3, since a patient detects bed removal by pushing down a bed rail, even if the patient does not have the intention to get off the bed and only pushed down the bed rail, There is a problem that the reliability is low. Further, since the bed fence is lowered, there is a problem that it is dangerous to hold the bed fence as a support and the safety is low.

  Furthermore, in the prior art described in Patent Document 4, since the bed is detected by a sheet-like sensor laid on the side of the bed, when the bed is detected, the patient has already started standing or walking on the side of the bed. There is a problem that the detection time is late.

  Furthermore, since the prior art described in all Patent Documents 1 to 4 uses a pressure sensor, a device for detecting bed removal by lowering the bed fence, and a dedicated device for bed detection such as a sheet sensor, There is a problem that the equipment cost becomes expensive.

  An object of the present invention is to provide a bed leaving detection device that can reliably detect bed leaving at low cost.

The present invention relates to a plurality of beds in which a bed fence is provided with an opening through which a patient can pass on one side, and the remaining area is surrounded by at least one of the bed fence and the wall. A push button switch for the patient to perform a push operation, and a nurse call terminal device that generates a call signal when the push button switch is pushed, and a nurse call terminal device installed in a predetermined management room, A bed leaving detection device using a nurse call system including a management device that notifies call information that can be individually identified for each patient or each bed in response to a call signal of
A base plate attached to the fence body;
An opening / closing door connected to the side edge of the base plate so as to be rotatable about a substantially vertical rotation axis;
Holding means for detachably holding the pushbutton switch on the base plate;
And a pressing member that presses the pushbutton switch and maintains the pressed state when the opening / closing door is opened at a predetermined angle or more from the closed position.

  According to the present invention, a bed fence is provided on one side of a bed installed in a hospital room or a nursing room in a nursing facility, and an opening used for getting on and off the patient's bed is provided. . The remaining area around the bed excluding the area where the bed fence and the opening are provided is surrounded by a wall such as a building wall, another bed fence and a board so that the patient does not fall from the bed. Yes.

  Such hospitals and care facilities are provided with nurse call systems. In this nurse call system, a nurse call terminal device generates a calling signal when a patient presses a push button switch. In response to a call signal from the nurse call terminal device, a management device installed in a predetermined management room such as a nurse station reports call information that can be individually identified for each patient or each bed. Such a nurse call system can use an existing system installed in a hospital, a care facility, or the like.

  A base plate is attached to the fence body, and an opening / closing door is connected to a side edge portion of the base plate so as to be rotatable about a substantially vertical rotation axis. The base plate is also provided with holding means for detachably holding the push button switch, and the opening / closing door is provided with a pressing member for pressing the push button switch. The pressing member presses the push button switch and maintains the pressed state when the opening / closing door is opened at a predetermined angle or more from the closed position.

  The reason for using such an open / close door is to guide the patient to the opening where the open / close door is provided and open the open / close door when the patient tries to walk off the bed by himself / herself in order to reliably detect getting out of bed. This is in order to use the action of performing for getting out of bed.

  Even if the opening / closing door is opened from the closed position at an angle smaller than a predetermined angle, the push button switch is not pressed by the pressing member, and the calling signal is not notified by the management device in the management room. The predetermined angle is the opening / closing door in a state where the patient's body position is in the end sitting position on the side facing the opening of the bed, that is, in the lower part from the knee of the patient's foot that hangs down from the side of the bed to the floor. You may choose as an angle when it opens to such an extent that it contacts.

  The predetermined angle that determines such an unreacted area is determined according to the degree of patient agility, the difference in the procedure when opening the door, etc., at least until the patient is standing, etc. What is necessary is just to determine for every patient so that the time which can visit can be ensured. This makes it possible to reliably detect bed leaving at a low cost without newly installing an expensive nurse call system and prevent the patient from falling and falling.

In the invention, it is preferable that the opening / closing door is made of a translucent material.
According to the present invention, the opening / closing door is made of a translucent material, thereby reducing the feeling of closeness and pressure on the patient, preventing disgust and discomfort with respect to the presence of the opening / closing door, By avoiding the use of the door, it is possible to prevent the user from getting over the bed fence and to detect the bed more reliably.

  Furthermore, the present invention is characterized in that the holding means is provided at a lower end portion of the base plate.

  According to the present invention, the holding means is provided at the lower end of the base plate to recognize that the push button switch is pressed by the patient opening the open / close door and notified to a nurse or the like, and from inside the bed. It is possible to prevent the push button switch from being easily removed from the base plate by reaching out.

  Further, according to the present invention, the opening / closing door is prevented from rotating in the opening direction until the pressing force in the opening direction of the opening / closing door reaches a predetermined magnitude. A blocking means is provided.

  According to the present invention, the opening / closing door is provided with a rotation preventing means. This rotation prevention means prevents the opening / closing door from rotating in the opening direction until the pressing force in the opening direction from the closed position reaches a predetermined magnitude, and prevents the opening / closing door from being touched by a futon or a pillow. It prevents the door from being opened undesirably due to contact with the patient, inadvertent contact with the patient's body, and blowing of wind etc. And the reliability of getting out of bed can be improved.

  Furthermore, the present invention is characterized in that the holding means holds the push button switch so as to be angularly displaceable over an operating position where the push button switch faces the pressing member and a non-operating position where the push button switch is separated from the pressing member.

  According to the present invention, the holding means holds the push button switch in an angularly displaceable state between the operating position and the non-operating position, so that the required required bed for patient examination, treatment, examination, defecation, walk, visit, etc. is accepted. If the push button switch is angularly displaced to the non-operating position without removing the push button switch from the base plate, the call information from the management device is notified by lighting and flashing light and sounding. When the state where it is necessary to detect bed leaving again, the pushbutton switch can be returned to the operating position to return to a state where bed leaving can be detected, and detection / non-detection of bed leaving can be easily switched. it can.

  According to the present invention, the operation of opening the open / close door provided on the bed by the patient makes it possible to reliably leave the bed at an inexpensive cost using an existing nurse call system without newly installing an expensive nurse call system. By detecting it, it is possible to prevent the patient from falling and falling.

  Further, according to the present invention, since the open / close door is made of a translucent material, it is possible to reduce the feeling of closing and pressure on the patient and to detect bed leaving more reliably.

  Further, according to the present invention, the holding means is provided at the lower end portion of the base plate to prevent the patient from reaching out from the bed and easily removing the push button switch from the base plate, and leaving the bed while a nurse or the like is not aware. It is possible to prevent a problem that a situation in which it cannot be detected is reached.

  Furthermore, according to the present invention, it is possible to prevent unintentional opening of the opening / closing door by the rotation preventing means, to prevent erroneous detection for getting out of bed, and to improve the reliability of getting out of bed.

  Further, according to the present invention, since the push button switch can be held at the operating position and the non-operating position by the holding means so as to be angularly displaceable, it is not necessary to detect the bed leaving and the need to detect the bed leaving. The detection unnecessary state can be easily switched.

  FIG. 1 is a perspective view showing a care bed 2 to which a bed leaving detection apparatus 1 according to an embodiment of the present invention is attached. A plurality of nursing beds 2 used by elderly patients with dementia, for example, are installed in hospital rooms and nursing homes. The nursing bed 2 includes a rectangular metal base frame 3, four legs 5 each having an upper end connected to the lower surface of the four corners of the base frame 3, and a caster 4 provided at the lower end. A headboard 6 erected on one short side edge of the frame 3, a footboard 7 erected on the other short side edge of the base frame 3, and one length of the base frame 3 Stands detachably on the side edge, and detachably on the first bed rail 8 extending between the headboard 6 and the footboard 7 and the other long side edge of the base frame 3. A second bed rail 9 extending between adjacent positions near the headboard 6 and the footboard 7, a mat 10 laid on the base frame 3, and a bed leaving the second bed rail 9 in a detachable manner. Detection device It is including the door.

  The second bed fence 9 and the foot board 7 are spaced apart from each other with an interval ΔL through which a patient can pass, and an opening 13 is formed between the second bed fence 9 and the foot board 7. The first bed fence 8 and the footboard 7 may not be provided when the care bed 2 is arranged close to the wall of the building in the hospital room or the nursing room, but in any case The remaining area of the care bed 2 excluding the opening 13 is surrounded by at least one of the first and second bed rails 8 and 9 and the wall to prevent the patient from falling. The wall body is realized by the head board 6 and the foot board 7 in the present embodiment, but may be realized by a building wall or the like in another embodiment of the present invention.

  The bed leaving detection apparatus 1 is rotated in the directions of arrows D1 and D2 about a substantially vertical rotation axis L1 by a base plate 15 mounted on the second bed fence 9 and a plurality of hinges 21 on a side edge of the base plate 15. An opening / closing door 16 that can be connected, a mounting bracket 18 that is a holding means for detachably holding a pushbutton switch 17 described later on the base plate 15, and a material having moderate elasticity such as hard synthetic resin or spring steel wire. And a pressing member 19 that presses the push button switch 17 and maintains the pressing state when the open / close door 16 is opened at a predetermined angle θ or more from the closed position.

  The opening / closing door 16 is realized by a rectangular plate-shaped synthetic resin panel made of acrylic resin, which is a translucent material. The base plate 15 may also be made of the same material as the door 16. The materials of the door 16 and the base plate 15 are not limited. However, the force when the patient or caregiver operates when the door 16 is opened or closed, the contact force of the patient's body when going to bed, etc. And having sufficient strength. Further, the surfaces of the door 16 and the base plate 15 are antibacterial treated by fluorine coating or the like, or antibacterial synthetic resin containing an antibacterial agent such as silver zeolite or thiosulfite is used to impart antibacterial properties. Also good. Examples of the synthetic resin to which the antibacterial agent can be added include polyvinyl chloride, polyolefin, polyurethane, polystyrene, ABS, and polyethylene terephthalate.

  The base plate 15 is made of a light-shielding material so that the pushbutton switch 17 cannot be seen by the patient in the bed. The light shielding material may be a synthetic resin in which a pigment is contained in the same synthetic resin as that of the door 16 described above, or a light shielding paint may be applied to a synthetic resin similar to the door 16. . Further, as the light shielding material, since the synthetic resin is lightweight, it is easy to remove, but materials other than the synthetic resin, such as stainless steel plate, aluminum alloy plate, and plywood, may be used.

  FIG. 2 is an enlarged cross-sectional view taken along the section line II-II in FIG. Referring also to FIG. 1, the mounting bracket 18 is provided at a lower end portion below the upper edge portion 20 of the base plate 15 by a distance B. The distance B is selected such that the hand cannot reach from the patient sitting on the bed 2 in the vicinity of the second bed rail 9 or cannot be operated even if it reaches, for example, about 50 cm to 70 cm. Thereby, it is possible to prevent the patient from arbitrarily removing the push button switch 17.

  The mounting bracket 18 has the operating position shown in FIGS. 1 and 2 in which the pushbutton switch 17 faces the pressing member 19, and the pushbutton switch 17 is separated from the pressing member 19, that is, the pushbutton 17a is upward (see the paper surface of FIG. 2). It is provided so as to be rotatable around the horizontal axis L2 over a non-operating position facing the vertical front side.

  The mounting bracket 18 includes a bracket 25 attached to the base plate 15 by a screw or the like so as to be rotatable about a horizontal axis L2 perpendicular to the base plate 15, and an imaginary portion whose one end is attached to the bracket 25 horizontally to the base plate 15 by a hinge (not shown). It has a substantially U-shaped fitting piece 28 that is pivotably connected around a parallel axis on one plane and whose other end is connected to the bracket 25 by a wing nut 26 and a pin bolt 27 so as to be opened and closed. .

  The push button switch 17 is clamped by the bracket 25 and the fitting piece 28 in a state where the wing nut 26 is screwed to the pin bolt 27. Further, when the wing nut 26 is screwed away from the pin bolt 27 and released, the fastening state of the fitting piece 28 to the bracket 25 is released, and the fitting piece 28 is moved away from the bracket 25 in the direction in which the other end portion is separated from the bracket 25. The push button switch 17 can be removed by angular displacement about the axis. By employing such a mounting bracket 18, the push button switch 17 can be held so as to be angularly displaceable.

  The pressing member 19 is provided to protrude outward (to the right in FIG. 2) at the lower corner of the door 16 near the mounting bracket 18. As described above, the pressing member 19 is realized by a substantially U-shaped linear member made of a hard synthetic resin or an elastic material such as a spring steel wire. It may be in the form of a block such as a synthetic resin. Both end portions in the longitudinal direction of the pressing member 19 are fixed to the opening / closing door 16, and a part of the curved portion 30 protruding outward from the opening / closing door 16 is elastic to the push button 17 a of the push button switch 17 disposed at the operating position. In contact with the Even if the opening / closing door 16 is opened as indicated by the phantom line in FIG. 2, this contact state is curved while maintaining the contact state according to the amount of rotation of the opening / closing door 16, and is always in contact with the push button 17a. When the opening / closing door 16 is opened at an angle θ (30 ° or more in the present embodiment) or more as described above, the push button 17a is pressed.

  Even if the opening / closing door 16 is opened from the closed position at an angle less than a predetermined angle θ, the push button switch 17 is not pressed by the pressing member 19 and the calling information is not notified by the management device 42 in the management room. The predetermined angle θ is a state in which the patient's posture reaches the end sitting position on the side facing the opening 13 of the bed 2, that is, the portion below the knee that hangs down from the side of the bed 2 to the floor of the patient's foot. The opening angle is selected so that the door is in contact with the door.

  The predetermined angle θ for determining such an unreacted state of bed leaving is determined according to the degree of patient agility, the difference in procedure when opening the door 16 and the like, and at least nursing until the patient is standing. What is necessary is just to determine for every patient so that the time which a person etc. can visit can be ensured. This makes it possible to reliably detect bed leaving at a low cost without newly installing an expensive nurse call system and prevent the patient from falling and falling.

  FIG. 3 is a perspective view of a part of the base plate 15 as viewed from the arrow A side in FIG. The base plate 15 is detachably attached to the second bed rail 9 by a plurality of engaging members 31a to 31f. Each of the engaging members 31 a to 31 f includes a flat base portion 32 that is fixed to the base plate 15 by bonding or screwing, and a substantially L-shaped engaging portion 33 that is continuous with the base portion 32.

  Of such engaging members 31a to 31f, the engaging members 31a to 31f are fitted and engaged with pipe-shaped horizontal frames 34a, 34b, 34c, and 34d constituting the second bed rail 9 from above, The engaging member 31f is fitted into the pipe-shaped vertical frame 34e from the side and engaged therewith. The engaging members 31a and 31b prevent only the downward displacement relative to the engaging members 34a and 34b. However, the engaging members 31c and 31d are adjacent to both sides of the vertical frame 34f to the horizontal frames 34b and 34d. Since they are engaged with each other, not only the vertically downward displacement but also the horizontal displacement is prevented. The engaging member 31e is disposed close to the opposite side of the opening 13 of the vertical frame 34f, and the engaging member 31f is disposed close to the opposite side of the opening 13 of the vertical frame 34e. The displacement to the right side in FIG. 3 is prevented.

  The engaging members 31 a to 31 f are not limited to the above-described forms, and may appropriately adopt forms corresponding to various frame structures constituting the second bet rail 9.

  In this way, the base plate 15 is prevented from being undesirably displaced toward the opening 13 by the action of an external force from a patient or the like, and the smooth opening and closing of the open / close door 16 is prevented from being damaged.

  FIG. 4 is an enlarged cross-sectional view of the mounting bracket 18 as seen from the section line IV-IV in FIG. At the lower end portion of the opening / closing door 16, the adsorbing member 22 serving as a rotation preventing means is provided from the lower edge of the opening / closing door 16 in the vicinity of the free end portion that is separated radially outward from the rotation axis L1 serving as the rotation center. In a state of protruding downward, it is fixed by a technique such as adhesion or screwing. The suction member 22 can prevent the opening / closing door 16 from rotating in the opening direction D1 until the pressing force in the direction D1 opening the opening / closing door 16 from the closed position reaches a predetermined magnitude. Have power.

  The attracting member 22 is realized by a permanent magnet, and a spacer 37 for optimally adjusting the attracting force is provided at a portion protruding downward from the lower edge of the open / close door 16 as will be described later. The spacer 37 is made of a magnetically permeable material, and may be realized by, for example, a cylindrical resin molded product, or may be realized by winding an adhesive tape such as a vinyl tape around a permanent magnet.

  When the open / close door 16 is closed, the spacer 37 of the attracting member 22 contacts the side surface of the base frame 3 and magnetically attracts. Therefore, the base frame 3 is made of a ferromagnetic material such as iron. The adsorption force of the adsorption member 22 in such an adsorption state is selected so as to be the predetermined magnitude pressing force. The predetermined size prevents the opening / closing door 16 from rotating in the opening direction D1 due to the pressing force in the opening direction D1 from the closed position, and the opening / closing door 16 comes into contact with a futon, a pillow, or the like. The opening / closing door 16 can be prevented from being undesirably opened by a presumed pressing force such as inadvertent contact of the patient's body and blowing of wind or the like, for example, a range of 10 to 50N Chosen. The thickness ΔT of the spacer 37 is determined so that optimum magnetic adsorption to the base frame 3 by such an adsorption member 22 can be obtained.

  FIG. 5 is a system diagram for explaining the configuration of the nurse call system 40. The nurse call system 40 used in the above-described bed leaving detection device 1 is provided with the push button switch 17 for a patient to perform a pressing operation in association with each of a plurality of nursing beds 2, and the push button 17a of the push button switch 17 is pressed. Nurse call terminal device 41 that generates a call signal when operated, and installed in a predetermined management room, can be individually identified for each patient or bed in response to the call signal from nurse call terminal device 41 And a management device 42 for informing the call information.

  In the nurse call terminal device 41, the push button switch 17 is connected by a signal line such as a flexible cable, and the handset 43 on which a speaker and a nurse call button are mounted is connected to the handset 43 by a signal line such as a flexible cable. The nurse call slave unit 44 is fixed to a wall surface in a hospital room, and the nurse call slave unit 44 is connected to each other by a signal line and has an outdoor relay device 45 fixed to a wall surface of a corridor outside the patient room. The management device 42 includes a control device 46 realized by a computer, and a management device main body 47 that is controlled by the control device 46 and notifies the call information by lighting of a lamp and sound. As such a nurse call system 40, an existing system installed in a hospital, a care facility, or the like can be used.

  FIG. 6 is a flowchart for explaining the operation of the bed detection apparatus 1, FIG. 7 is a timing chart for explaining the bed detection operation by the bed detection apparatus 1, and FIG. FIG. 7 (2) shows a call signal for the pushbutton switch 17, and FIG. 7 (3) shows an output signal for call information. FIG. 8 is a view showing a change in body posture when the patient leaves the care bed 2.

  First, in step s1, when the management device 42 selects the bed leaving detection mode for each patient at time t1 in FIG. 7 (1) by the operator's input operation, the nurse call system 40 starts the bed leaving detection operation, and bed leaving detection control is performed. The device 46 recognizes a call signal as a bed leaving detection signal from the push button switch 17 of the bed leaving detection device 1 installed corresponding to the care bed 2 of the selected patient, and a signal change of the push button switch 17 of the selected patient is detected. Is a signal indicating the opening / closing operation of the door 16, the control device 46 determines the presence / absence of getting out of the bed, and when it is getting out of the floor, displays a call-out information and outputs the call-out information to the management device main body 47 by sound. Execute.

  When the patient opens the door 16 at an angle θ or more in step s2, as shown in FIG. 7 (2), the call signal is transmitted from the push button switch 17 to the handset 43, the nurse call slave unit 44, and the outdoor at time t2. It is input to the control device 46 via the relay device 45, and the control device 46 determines that the push button switch 17 has been pressed, and starts the operation over time.

  In step s3, when the state in which the call signal is input to the control device 46 as described above continues for a predetermined time T1 from time t2, the control device 46 sends the nurse call terminal device to the management device main body 47 in step s4. In response to the call signal from 41, call information that can be individually identified for each patient or for each bed is output by turning on the indicator lamp or displaying on the screen, and the sound for notifying the floor from the speaker is shown in FIG. Output at time t3 to notify that the patient has left bed. At this time, the patient often goes from the lying position shown in FIG. 8 (1) to the side projecting to the side of the bed 2 of the foot as shown in FIG. 8 (2). The opening / closing door 16 is opened by a slight angle less than the predetermined angle θ by the legs protruding sideways. Thereafter, as shown in FIG. 8 (3), the arm and the elbow are used to reach the elbow standing position and the end sitting position shown in FIG. 8 (4) is reached. In this way, the patient trying to get out of bed has a slower flow of movement from lying down to the end sitting position than a healthy person, and even in the end sitting position, the patient is not ready to walk. The angle at which the door 16 is opened by the legs below the knee is the aforementioned predetermined angle θ.

  In step s5, when the nurse confirms who has left the bed by the display or sound of the management apparatus main body 47, the nurse cancels the notification operation at time t4 after time T2 has elapsed from time t3. Then, go to the patient room or nursing room where the patient is notified of the call information, check the situation, take action such as prompting the patient to go to bed, etc., and then return the opened door 16 to the closed position. At time t5, the calling signal to the control device 46 changes to the off state, and again returns to the standby state at step s2.

  When the nurse determines that there is no risk of getting out of the patient's condition, or when the reason for getting out of bed such as examination, examination, excretion, washing, bathing, walking, etc. is clear, the control device 47 is input in step s7. By canceling the bed removal detection mode, the bed removal detection mode is released for each patient whose bed monitoring is no longer required at time t6, and the bed removal detection operation for that patient is completed in step s8.

  By using the opening / closing door 16 in this manner, when the patient tries to walk off the care bed 2 by himself / herself, the patient is guided to the opening 13 provided with the opening / closing door 16 and the opening / closing door 16 is opened. Can be used for bed detection to reliably prevent the patient from getting out of bed.

  As described above, the bed leaving detection device 1 can quickly detect the bed leaving the patient at an inexpensive cost using the existing nurse call system 40. However, the door 16 is made of a translucent material. Reducing the feeling of closure, restraint, and pressure on the patient, preventing disgust and discomfort with the presence of the door 16, avoiding the use of the door 16 and getting over the bed fence to leave the patient It is possible to prevent the attempt to detect bed leaving more reliably.

  Further, by providing the mounting bracket 18 at the lower end of the base plate 15, the patient recognizes that the push button switch is pressed and the nurse or the like is notified when the door 16 is opened. It is possible to prevent the push button switch 17 from being easily removed from the base plate 15 by reaching out.

  Further, since the opening / closing door 16 is provided with an adsorption member 22 as a rotation preventing means, the opening / closing door 16 is opened until the pressing force in the opening direction from the closed position to the opening / closing door 16 reaches a predetermined magnitude. The door 16 is prevented from rotating in the direction D1, and the opening / closing door 16 is pressed by the contact of a futon, a pillow, etc. to the opening / closing door 16, the inadvertent contact of the patient's body, and the blowing of wind or the like. It acts and prevents the opening / closing door 16 from being undesirably opened, prevents erroneous detection for getting out of bed, and improves the reliability of getting out of bed.

  Further, since the mounting bracket 18 holds the push button switch 17 so as to be angularly displaceable between the operating position and the non-operating position, it is necessary to allow the required bed to be accepted such as medical examination, treatment, examination, defecation, walk, visit, etc. of the patient. In this case, the notification operation by displaying the calling information and sounding the sound by the management device 42 is stopped by a simple operation of angularly moving the push button switch 17 to the non-actuated position without removing the push button switch 17 from the base plate 15. When it becomes necessary to detect the bed again, the push button switch 17 can be returned to the operating position to return the bed to a detectable state, and the detection / non-detection of the bed can be easily switched. .

It is a perspective view which shows the bed 2 for nursing care with which the bed leaving detection apparatus 1 of one Embodiment of this invention is mounted | worn. It is the expanded sectional view seen from the cut surface line II-II of FIG. It is the one part perspective view which showed the attachment state to the 2nd bed fence 9 of the baseplate 15, and looked at a part of baseplate 15 from the arrow A side of FIG. FIG. 4 is an enlarged cross-sectional view of the mounting bracket 18 as viewed from a cutting plane line IV-IV in FIG. 1. 3 is a system diagram for explaining a configuration of a nurse call system 40. FIG. It is a flowchart for demonstrating operation | movement of the bed leaving detection apparatus. FIG. 7A is a timing chart for explaining the bed detection operation by the bed detection device 1. FIG. 7A shows the on / off state of the bed detection mode in FIG. 7B, and FIG. FIG. 7 (3) shows an output signal of call information. It is a figure which shows the posture change when a patient leaves the bed for care.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bed leaving detection device 2 Care bed 3 Base frame 4 Caster 5 Leg 6 Headboard 7 Footboard 8 First bed fence 9 Second bed fence 10 Mat 13 Opening 15 Base plate 16 Opening / closing door 17 Pushbutton switch 18 Mounting bracket 19 Pressing member 21 Hinge 31a-31f Engagement member 22 Adsorption member 37 Spacer 40 Nurse call system 41 Nurse call terminal device 42 Management device 43 Handset 44 Nurse call slave device 45 Outdoor relay device

Claims (5)

In relation to each of the plurality of beds, a bed rail is provided with an opening through which a patient can pass on one side and the remaining area is surrounded by at least one of the bed rail and the wall. A push button switch for pressing operation is provided, and a nurse call terminal device that generates a calling signal when the push button switch is pressed, and a call signal from the nurse call terminal device that is installed in a predetermined management room. In response, a bed leaving detection device using a nurse call system including a management device that notifies call information that can be individually identified for each patient or each bed,
A base plate attached to the fence body;
An opening / closing door connected to the side edge of the base plate so as to be rotatable about a substantially vertical rotation axis;
Holding means for detachably holding the pushbutton switch on the base plate;
A bed leaving detection device comprising: a pressing member that presses the pushbutton switch and maintains the pressed state when the opening / closing door is opened at a predetermined angle or more from the closed position.   The bed leaving detection apparatus according to claim 1, wherein the opening / closing door is made of a translucent material.   The bed leaving detection device according to claim 1, wherein the holding unit is provided at a lower end portion of the base plate.   The opening / closing door is provided with a rotation preventing means for preventing the opening / closing door from rotating in the opening direction until the pressing force in the direction to open the opening / closing door reaches a predetermined magnitude. The bed leaving detection apparatus according to any one of claims 1 to 3.   The holding means holds the push button switch so as to be angularly displaceable over an operating position where the push button switch faces the pressing member and a non-operating position where the push button switch is separated from the pressing member. The bed leaving detection device according to any one of the above.

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