JP2013081705A - Medical diagnostic device and examinee bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further increase the safety of an examinee by helping the medical treatment staff being able to forecast more quickly and securely the danger of his fall down from his bed.SOLUTION: A medical diagnostic device includes a domed inspection unit and a bed having a top plate to carry an examinee. This device, where an examinee is inspected by the inspection unit and the top plate moving relatively to each other, is provided with a means for determining the condition of the examinee and another means for notifying the condition to the medical staff. The determining means detects the position of the examinee body to the inspection unit or the top plate, and based on the information of his position detected, determines whether the examinee is in the danger of falling from the top plate. The notifying means notifies the information of the result determined by the determining means to the medical staff.

Description

  Embodiments described herein relate generally to a medical diagnostic apparatus that performs an examination by placing an examinee on a bed apparatus, and a bed apparatus that carries the examinee.

  In recent years, medical diagnostic apparatuses such as scintillation cameras using X-rays, CT (Computed Tomography) image diagnostic apparatuses, and magnetic resonance imaging (MRI) apparatuses are widely used in the field of medical diagnosis. Some of these devices include, for example, a couch device on which an inspected person is placed, and the in-vivo information of the inspected person is detected by moving the inspected person into the inspection unit by the couch device.

  By the way, in this type of apparatus, it is necessary to prevent the person to be inspected from dropping from the bed apparatus during the inspection. Therefore, conventionally, for example, measures are taken such as forming the top plate of the bed apparatus into a concave shape or fixing the person to be inspected to the bed apparatus with a fixing band.

Japanese Patent Laid-Open No. 2003-210457 JP-A-6-217972

  However, in a device in which the top plate of the bed apparatus is formed in a concave shape, the person to be inspected is shaken by an inspection data collection error or an inspection re-execution, etc. If the inspector takes an unexpected action and a medical staff such as a doctor or an inspection engineer is late to notice this, the person to be inspected may fall from the bed apparatus. In addition, in a device that uses a fixed band, the fixed band may not be used depending on the medical condition of the examinee and the position of the affected part. In such a case, there is a risk of dropping as described above. Remain.

  The present invention has been made paying attention to the above circumstances. The purpose of the present invention is to improve the safety by allowing medical staff to reliably and quickly recognize the risk of the subject being dropped. It is in providing a diagnostic apparatus and a bed apparatus.

  The medical diagnostic apparatus according to the embodiment includes an inspection unit formed in a dome shape and a bed apparatus having a top board on which the subject is placed, and by relatively moving the inspection unit and the top board, An apparatus for inspecting an inspected person on a top board by an inspection unit includes a determining means for determining the state of the inspected person and a notifying means. The determination means detects the position of the person to be inspected with respect to the inspection unit or the top board, and enters a state where there is a risk that the person to be inspected falls from the top board based on information representing the detected position. It is determined whether or not. The notification means notifies the medical staff of information representing the determination result by the determination means.

1 is a block diagram showing a configuration of a medical diagnostic apparatus according to a first embodiment. The figure which shows an example of the setting result of the safe area | region / dangerous area | region by the medical diagnostic apparatus shown in FIG. The figure which shows the positional relationship of a to-be-inspected person and a test | inspection unit when it determines with there being a fall risk in the medical diagnostic apparatus shown in FIG. The figure which shows the positional relationship of a to-be-inspected person and a test | inspection unit when it determines with there being no fall risk in the medical diagnostic apparatus shown in FIG. The figure which shows the positional relationship of a to-be-inspected person and a test | inspection unit when it determines with there being a fall risk in the medical diagnostic apparatus shown in FIG. The figure which shows an example of the setting result of the safe area | region / dangerous area | region by the medical diagnostic apparatus which concerns on 2nd Embodiment. The figure which shows operation | movement of the medical diagnostic apparatus which concerns on 2nd Embodiment. The side view which shows the structure of the bed apparatus which concerns on 3rd Embodiment. The block diagram which shows the structure of the bed apparatus which concerns on 3rd Embodiment. The figure which shows operation | movement description of the bed apparatus shown in FIG. The block diagram which shows the structure of the bed apparatus which concerns on 4th Embodiment. The figure which shows operation | movement description of the bed apparatus shown in FIG.

Hereinafter, embodiments will be described with reference to the drawings.
[First Embodiment]
The first embodiment is a medical diagnostic apparatus that includes a bed apparatus on which an examinee is placed and an examination unit that moves an X-ray scintillation camera relative to the examination target part of the examinee. The safety area and the danger area are set in advance on the top plate of the bed apparatus in accordance with the positional relationship between and the inspected person falls when the current position of the inspected person is included in the danger area among the above areas. It is determined that there is a danger state, and the fact is notified.

(Constitution)
FIG. 1 is a block diagram showing a configuration of a medical diagnostic apparatus according to the first embodiment, in which 1 denotes an examination unit and 2 denotes a bed apparatus. The couch device 2 is a device in which a top plate 22 is fixedly installed on a support table 21, and the person 3 to be inspected is put on the couchtop 22 while sleeping. In the inspection unit 1, a stand base 12 is erected on a slide base 11, and a pair of X-ray scintillation cameras 13 and 14 are fixed to the stand base 12. The slide base 11 is provided with a drive mechanism using a motor as a power source, and is guided by a rail (not shown) to slide in the horizontal direction (arrow A direction), thereby moving the X-ray scintillation cameras 13 and 14 of the subject 3 to be inspected. Position at the site to be examined.

  By the way, the medical diagnostic apparatus according to the first embodiment further includes a fall risk monitoring unit 4. The drop risk monitoring unit 4 includes a gantry data storage unit 41, an inspected person data storage unit 42, an area setting unit 43, a movement position detection unit 44, a fall risk determination unit 45, and a notification control unit 46. I have. Among these, the area setting unit 43, the movement position detection unit 44, the drop risk determination unit 45, and the notification control unit 46 are realized by causing the CPU to execute a program.

  The gantry data storage unit 41 stores in advance information indicating the initial position of the inspection unit 1 with respect to the couch device 2 and the size in the moving direction A of the stand gantry 12 of the inspection unit 2. In the subject data storage unit 42, body data including the height of the subject 3 is stored in association with the ID information of the subject 3. The physical data is stored, for example, by an examination engineer who inputs from a terminal (not shown) or downloads from a medical information management server (not shown) that stores electronic medical record data and the like.

  The area setting unit 43 reads the corresponding body data of the subject 3 from the subject data storage unit 42 based on the ID information of the subject 3. At the same time, information indicating the initial position of the inspection unit 1 with respect to the couch device 2 and the size of the stand gantry 12 in the moving direction A is read from the gantry data storage unit 41. Then, based on the read body data of the person to be inspected 3, the initial position, and the depth size of the stand frame 12, a safety area and a danger area are set for the top plate 22 of the bed apparatus 2.

  The movement position detection unit 44 takes in data representing the movement amount from the slide frame 11 of the inspection unit 1. Then, the current position of the stand base 12 of the inspection unit 1 is calculated on the basis of the data representing the taken movement amount. More specifically, the position of the center line O in the moving direction of the stand base 12 is calculated.

  The fall risk determination unit 45 determines whether the calculated current position of the stand base 12 is included in the safety region or the dangerous region set on the top plate 22 of the bed apparatus 2 by the region setting unit 43. To do. When the current position of the stand base 12 is included in the dangerous area, it is determined that the person to be inspected 3 is in a state of risk of dropping from the top plate 22, and information indicating the determination result is informed control. To the unit 46.

  The notification control unit 46 drives the light emitter 47 and the speaker 48 to detect light and light when the fall risk determination unit 45 determines that the subject 3 is in a state of risk of falling from the top plate 22. Generate a sound alarm. The light emitter 47 is installed, for example, in a place where the emitted light is not visible to the person to be inspected 3 and is always visible to the inspection engineer. Further, the speaker 48 is installed, for example, in a place where the sound cannot be heard by the person to be inspected 3 and can be surely heard by the inspection engineer.

(Operation)
Prior to the inspection, when the inspection engineer inputs the ID information of the inspected person 3 from the terminal, the body setting data of the inspected person 3 associated with the ID information is read from the inspected person data storage unit 42 in the area setting unit 43. It is. At the same time, information indicating the initial position of the inspection unit 1 with respect to the couch device 2 and the size in the moving direction of the stand gantry 12 is read from the gantry data storage unit 41. Then, in the region setting unit 43, the following is performed on the top plate 22 of the bed apparatus 2 on the basis of the body data of the person 3 to be inspected and the size of the initial position and the moving direction of the stand base 12. Set the safe area and the dangerous area.

  That is, during the inspection, the stand frame 12 of the inspection unit 1 slides and slowly passes through both sides of the person 3 to be inspected, but the stand frame 12 is positioned on both sides of the body part of the person 3 to be inspected. When this is the case, since the stand base 12 functions as a fall prevention wall, there is little risk that the person under test 3 will fall. In contrast, when the stand base 12 is located on both sides of the head or leg of the person 3 to be inspected, the stand base 12 does not function as a fall prevention wall for the person 3 to be inspected. The risk of falling will increase.

  Therefore, based on the body data of the inspected person 3 read out, in particular, the size of the height or sitting height, the initial position of the stand base 12 and the size in the moving direction, As shown in FIG. 2, a safe area and a dangerous area are set. More specifically, the safety area and the danger area are set as position coordinates in the movement direction A of the inspection unit 1. The position coordinates representing the set safety area and danger area are stored in a memory in the area setting unit 43.

  Now, in this state, when the person to be inspected lies on the top plate 22 and the inspection is started, the inspection unit 1 moves slowly by driving the slide base 11, and the stand base 12 is inspected. Pass through both sides of 3. In this movement process, data representing the amount of movement is output from the slide mount 11 of the inspection unit 1 at regular time intervals and input to the movement position detector 44. Each time the movement amount data is input, the movement position detector 44 calculates the position coordinates of the stand frame 12 based on the movement amount data. Precisely, the position coordinates of the center line O in the moving direction A of the stand frame 12 are calculated.

  When the position coordinates of the stand gantry 12 are calculated, the fall risk determination unit 45 uses the calculated position coordinates of the stand gantry 12 as position coordinates representing the safety area and the dangerous area set in the area setting unit 43. By comparison, it is determined whether the position coordinates of the stand frame 12 are included in the safety area or the danger area. And as a result of this comparison, when the position coordinates of the stand gantry 12 are included in the dangerous area, it is determined that the person to be inspected 3 is in a state of risk of falling from the top plate 22, and the determination result Is output to the notification control unit 46. Upon receiving this determination result, the notification controller 46 drives the light emitter 47 and the speaker 48 to generate an alarm by light and sound.

  For example, when the movement position of the inspection unit 1 (more precisely, the position of the center line O of the stand base 12) is included in the dangerous area as shown in FIG. 3 or FIG. It is determined that there is a risk of falling, that is, the fall risk is in an ON state, and an alarm by light and sound is generated from the light emitter 47 and the speaker 48 by the notification control unit 46. On the other hand, when the movement position of the inspection unit 1 (more precisely, the position of the center line O of the stand frame 12) is included in the safety area as shown in FIG. In other words, it is determined that there is no falling risk, that is, the fall risk is in an OFF state.

  As described above in detail, in the first embodiment, the bed apparatus 2 on which the person 3 to be inspected is placed and the inspection unit 1 that moves the X-ray scintillation cameras 13 and 14 with respect to the inspection target part of the person 3 to be inspected. In the medical diagnostic apparatus provided, a safety area and a danger area are set in advance on the top plate 22 of the bed apparatus 2 according to the positional relationship between the inspection unit 1 and the person 3 to be inspected, and the current position of the person 3 to be inspected is described above. When each of the areas is included in the dangerous area, it is determined that the person to be inspected 3 is in a state of danger of dropping, and the fact is notified.

  Therefore, a medical staff such as a doctor or a laboratory technician can reliably recognize this state by an alarm when there is a risk that the subject 3 will fall. Even if the person 3 takes an unexpected action such as trying to get off the top plate 22, it is possible to respond quickly. In addition, even if the subject 3 is unable to use the fixed band, if there is a risk of falling, this state is surely recognized and attention is paid to the subsequent behavior of the subject. It becomes possible to pay.

[Second Embodiment]
The second embodiment is a CT diagnostic apparatus that obtains in-vivo information of a subject by moving a top board on which the subject is placed into a gantry as an examination unit so as to freely move back and forth. If the safety area and the danger area are set in advance on the top plate according to the positional relationship, and the position of the subject is included in the danger area among the above areas, there is a risk that the subject will fall It is judged that it has become and it is made to alert | report that.

(Constitution)
FIG. 6 is a block diagram showing a configuration of a medical diagnostic apparatus (CT diagnostic apparatus) according to the second embodiment, in which 5 indicates a gantry as an examination unit, and 6 indicates a bed apparatus. The bed apparatus 6 is configured such that the top plate 52 arranged on the support frame 61 can be slid into the gantry 5 by a drive mechanism provided in the support frame 61.

  Similarly to the apparatus described in the first embodiment, the medical diagnosis apparatus according to the second embodiment also includes a gantry data storage unit 41, an examinee data storage unit 42, a region setting unit 43, and a moving position detection. A drop risk monitoring unit 4 including a unit 44, a drop risk determination unit 45, and a notification control unit 46. Since the drop risk monitoring unit 4 has the same configuration as that in FIG. 1, the illustration in FIG. 6 is omitted.

  The area setting unit 43 reads out the body data of the inspected person 3 from the inspected person data storage unit 42, and the initial position of the top 62 with respect to the center line O in the depth direction of the gantry 5 from the gantry data storage unit 41, and the gantry Information indicating the size in the depth direction of 5 is read. Then, based on the read body data of the person to be inspected 3, the initial position, and the depth size of the gantry 5, a safe area and a dangerous area are set for the top plate 62 of the bed apparatus 6. FIG. 6 shows an example of the setting result.

  The movement position detection unit 44 takes in data representing the movement amount of the top plate 62 from the support frame 61 of the bed apparatus 6. Then, based on the captured data representing the amount of movement of the top plate 62, which position of the top plate 62 corresponds to the center line O in the depth direction of the gantry 5 is calculated.

  The fall risk determination unit 45 determines whether the position of the top plate 62 calculated by the movement position detection unit 44 is a safety region or a dangerous region set on the top plate 62 of the bed apparatus 2 by the region setting unit 43. Determine whether it is included. When the position of the top plate 62 is included in the danger area, it is determined that the person to be inspected 3 is in a state of risk of falling from the top plate 62, and information indicating the determination result is notified and controlled. To the unit 46.

  The notification control unit 46 drives the light emitter 47 and the speaker 48 to drive the light and the light when the person 3 to be inspected is in a state of risk of falling from the top plate 62 by the drop risk determination unit 45. Generate a sound alarm.

(Operation)
During the inspection, the inspected person 3 slides and enters the gantry 5 while being placed on the top plate 62, but when the body part of the inspected person 3 is located in the gantry 5, the gantry 5 Since it functions as a fall prevention wall, there is little risk that the inspected person 3 will fall. On the other hand, when the inspected person 3 is not in the gantry 5 or when only the head or legs are located in the gantry 5, the gantry 5 is not in contact with the inspected person 3. Since it does not function as a fall prevention wall, the danger that the person under test 3 will fall increases.

  Therefore, based on the body data of the inspected person 3 read out, particularly the height or sitting height, the initial position of the top plate 62 with respect to the center line O in the depth direction of the gantry 5, and the depth size of the gantry 5. For example, as shown in FIG. 6, a safe area and a dangerous area are set for the top plate 62. The safety area and the danger area are set as position coordinates in the moving direction of the top board 62. The position coordinates representing the set safety area and danger area are stored in a memory in the area setting unit 43.

  Now, in this state, the person to be inspected rides on the top plate 62, and when the inspection is started, the top plate 62 slides slowly by driving the support frame 61 and enters the gantry 5. In this movement process, data representing the amount of movement of the couchtop 62 is output from the support base 61 of the bed apparatus 6 at regular time intervals and input to the movement position detector 44. Each time the movement amount data is input, the movement position detection unit 44 calculates which position of the top plate 62 corresponds to the center line O in the depth direction of the gantry 5 based on the movement amount data. Is done.

  When the position coordinates of the top plate 62 are calculated, the fall risk determination unit 45 uses the calculated position coordinates of the top plate 62 as position coordinates representing the safety region and the dangerous region set in the region setting unit 43. The comparison is made to determine whether the position coordinates of the top plate 62 are included in the safety area or the dangerous area. As a result of the comparison, when the position coordinates of the top plate 62 are included in the dangerous area, it is determined that the person to be inspected 3 is in a state of risk of falling from the top plate 62, and the determination result Is output to the notification control unit 46. Upon receiving this determination result, the notification controller 46 drives the light emitter 47 and the speaker 48 to generate an alarm by light and sound.

  For example, when the position of the top plate 62 with respect to the center line O in the depth direction of the gantry 5 is included in the dangerous area as shown in FIG. 6, there is a risk of the subject 3 being dropped from the top plate 62, that is, It is determined that the fall risk is in an ON state, and the alarm controller 46 generates an alarm by light and sound from the light emitter 47 and the speaker 48.

  On the other hand, when the position of the top plate 62 with respect to the center line O in the depth direction of the gantry 5 is included in the safety area as shown in FIG. It is determined that the fall risk is in an OFF state, and no alarm due to light and sound is generated from the light emitter 47 and the speaker 48.

  As described in detail above, in the second embodiment, in the CT diagnostic apparatus for obtaining in-vivo information of the subject 3 by moving the top plate 62 on which the subject 3 is placed into the gantry 5, A safety area and a danger area are set in advance on the top board 62 according to the positional relationship with the person to be inspected 3, and the position of the top board 62 with respect to the center line O in the depth direction of the gantry 5 is set to the preset danger area. If it is included, it is determined that the person to be inspected 3 is in a state where there is a risk of falling, and the fact is notified.

  Therefore, as in the first embodiment, medical staff such as doctors and laboratory technicians can reliably recognize this state by an alarm when the inspected person 3 has a risk of falling. Is possible. Therefore, even if the person to be inspected 3 takes an unexpected action such as trying to get off the top plate 62 during the examination in this state, it is possible to respond quickly. In addition, even if the subject 3 is unable to use the fixed band, if there is a risk of falling, this state is surely recognized and attention is paid to the subsequent behavior of the subject. It becomes possible to pay.

[Third Embodiment]
In the third embodiment, in a bed apparatus that is used as a part of a medical diagnostic apparatus or used alone, a plurality of mat sensors are disposed on the top surface of the top board, and detection signals of the subject are detected by these mat sensors. Is input to the fall risk monitoring unit. In the fall risk monitoring unit, whether the input detection signal is in a state in which there is a risk of dropping the inspected person by comparing with the judgment reference data stored in advance for the fall risk judgment. It is determined whether or not, and when it is determined that there is a risk of falling, the fact is notified.

(Constitution)
8 and 9 are diagrams showing the configuration of the bed apparatus according to the third embodiment. FIG. 8 is a side view, and FIG. 9 is a plan view and a functional block diagram.
The couch device 7 is provided with a top plate 72 on a support base 71, and nine mat sensors 81 to 89 are disposed in a region on the top plate 72 where an inspected person should be placed. The mat sensors 81 to 89 are each provided with a pressure sensitive switch in a flexible mat, for example, and outputs a detection signal when the weight of the person to be inspected 3 is detected. These detection signals are input to the drop risk monitoring unit 9 via a signal cable.

  The drop risk monitoring unit 9 includes a reference data storage unit 91, a sensor signal receiving unit 92, a drop risk determination unit 93, and a notification control unit 94. Among these, the sensor signal receiving unit 92, the fall risk determination unit 93, and the notification control unit 94 are realized by causing the CPU to execute a program.

  A light emitter 95 and a speaker 96 are connected to the notification control unit 94 via a signal cable or the like. The light emitter 95 is installed, for example, in a place where the emitted light is not visible to the person to be inspected 3 and is always visible to the inspection engineer. The speaker 96 is installed in a place where the sound cannot be heard by the person to be inspected 3 and can be heard by the inspection engineer.

  In the reference data storage unit 91, all detection patterns of the subject by the mat sensors 81 to 89 when there is a risk of the subject being dropped from the top board 72 are stored as determination reference data. This criterion data is input by operating a terminal by a medical staff such as a doctor or a laboratory technician.

  The sensor signal receiving unit 92 receives the detection signals output from the mat sensors 81 to 89 at regular time intervals. Each time a detection signal is received, a detection pattern of the person to be inspected by the mat sensors 81 to 89 is generated based on the received detection signals, and the generated detection pattern is sent to the fall risk determination unit 93. Output.

The fall risk determination unit 93 compares the detection pattern output from the sensor signal reception unit 92 with the determination reference data stored in the reference data storage unit 91, and determines whether or not they match. When the detection pattern matches any of the criterion data, a signal instructing the generation of an alarm is output to the notification control unit 94.
When the alarm generation instruction is output from the drop risk determination unit 93, the notification control unit 94 drives the light emitter 95 and the speaker 96 to generate an alarm due to light and sound.

(Operation)
When the person to be inspected lies on the top 72, the fall risk monitoring unit 9 starts to operate. The fall risk monitoring unit 9 receives the detection signals output from the mat sensors 81 to 89 by the sensor signal receiving unit 92 at regular time intervals, and receives the detection signals from the mat sensors 81 to 89 based on the received detection signals. A detection pattern of the inspector is generated and output to the fall risk determination unit 93.

  In the fall risk determination unit 93, the detection pattern output from the sensor signal reception unit 92 is compared with the determination reference data stored in the reference data storage unit 91 to determine whether or not they match. When the detection pattern matches any of the determination reference data, a signal instructing the generation of an alarm is output to the notification control unit 94. When receiving the instruction signal, the notification controller 94 drives the light emitter 95 and the speaker 96 to generate an alarm by light and sound.

  For example, it is assumed that the person to be inspected 3 is currently lying in a substantially central region of the top board 72 as shown in FIG. In this case, detection signals indicating that the subject has been detected are output from all the mat sensors 81 to 89. For this reason, the sensor signal receiving unit 92 generates a detection pattern indicating that the inspected person has been detected by all the mat sensors 81 to 89 based on the detection signal. It is compared with the criterion data. At this time, the reference data storage unit 91 does not store the detection pattern indicating that the subject is detected by all the mat sensors 81 to 89 as the determination reference data. For this reason, the detection pattern does not match any of the determination reference data. Therefore, no alarm generation instruction is output from the fall risk determination unit 93, and as a result, no alarm is generated from the light emitter 95 and the speaker 96.

  On the other hand, it is assumed that the person to be inspected 3 moves on the top plate 72 and its position changes to a position biased to one side of the top plate 72 as shown in FIG. In this case, the mat sensors 82, 83, 85, 86, 88, 89 out of all the mat sensors 81-89 output detection signals indicating that the person to be inspected has been detected, from the mat sensors 81, 84, 87. No detection signal is output. For this reason, the sensor signal receiving unit 92 indicates that the subject is detected by only the mat sensors 82, 83, 85, 86, 88, 89 among all the mat sensors 81 to 89 based on the detection signal. A detection pattern is generated, and this detection pattern is compared with determination reference data in the fall risk determination unit 93. At this time, in the reference data storage unit 91, a detection pattern indicating that the subject is detected by only the mat sensors 82, 83, 85, 86, 88, 89 is stored as determination reference data. Therefore, the detection pattern matches one of the determination reference data, and as a result, an alarm generation instruction is sent to the notification control unit 94. As a result, light and sound representing an alarm are generated from the light emitter 95 and the speaker 96.

  As described above in detail, in the third embodiment, the mat sensors 81 to 89 are arranged on the top surface of the top plate 72, and the detection signal of the person 3 to be inspected by these mat sensors 81 to 89 is used as the fall risk monitoring unit 9. To enter. Then, in the fall risk monitoring unit 9, the input detection signal is compared with the judgment reference data stored in advance for the fall risk judgment, and the inspected person is in a state of risk of dropping. The light emitter 95 and the speaker 96 generate an alarm when it is determined that there is a risk of falling.

  Therefore, when the person to be inspected 3 moves to the one side of the top plate 72, for example, when the inspected person 3 tries to descend from the top plate 72 on the top plate 72, the deviation of the position of the examinee on the top plate 72 falls. Detected by the risk monitoring unit 9, an alarm is generated from the light emitter 95 and the speaker 96. For this reason, medical staff such as doctors and laboratory technicians can surely recognize this state by an alarm when there is a risk that the subject 3 will fall. Therefore, even when the person to be inspected 3 takes an unexpected action such as trying to get off the top plate 62 during the inspection, it is possible to respond quickly. In addition, even if the subject 3 is unable to use the fixed band, if there is a risk of falling, this state is surely recognized and attention is paid to the subsequent behavior of the subject. It becomes possible to pay.

[Fourth Embodiment]
In the fourth embodiment, in a bed apparatus used as a part of a medical diagnostic apparatus or used alone, edge sensors are provided on both sides of the top board, and detection of an inspected person by these edge sensors is performed. Input the signal to the fall risk monitoring unit. Then, in the fall risk monitoring unit, when the detection signal of the edge sensor is input, it is determined that the person to be inspected is in a state of danger of dropping, and the fact is notified. .

(Constitution)
FIG. 11 is a plan view and a functional block diagram showing the configuration of the bed apparatus according to the fourth embodiment. Since the structure of the bed apparatus itself is the same as that described in the third embodiment, the description thereof is omitted.

  Edge sensors 101 to 106 are disposed on both sides of the top plate 72, respectively. These edge sensors 101 to 106 are made of, for example, a buffer member provided at the edge portion of the top plate 72 and provided with a pressure-sensitive switch, and output a detection signal when the body contact of the person to be inspected 3 is detected. These detection signals are input to the drop risk monitoring unit 11 via a signal cable.

  The fall risk monitoring unit 11 includes a reference data storage unit 111, a sensor signal receiving unit 112, a fall risk determination unit 113, and a notification control unit 114. Among these, the sensor signal reception unit 112, the fall risk determination unit 113, and the notification control unit 114 are realized by causing the CPU to execute a program. Similarly to the first to third embodiments, the light emitting device 115 and the speaker 116 are connected to the notification control unit 114 via a signal cable or the like.

  In the reference data storage unit 111, all detection patterns of the inspected person by the edge sensors 101 to 106 when there is a risk that the inspected person falls from the top board 72 are stored as determination reference data. In the simplest example, a detection pattern when an inspected person is detected by at least one of the edge sensors 101 to 106 is stored as determination reference data. The determination reference data is input by operating a terminal by a medical staff such as a doctor or a laboratory technician.

  The sensor signal receiving unit 112 receives the detection signals output from the mat sensors 101 to 106 at regular time intervals. Each time a detection signal is received, a detection pattern of the person to be inspected by the mat sensors 101 to 106 is generated based on the received detection signals, and the generated detection pattern is sent to the fall risk determination unit 113. Output.

  The fall risk determination unit 113 compares the detection pattern output from the sensor signal reception unit 112 with the determination reference data stored in the reference data storage unit 111 and determines whether or not they match. When the detection pattern matches any of the determination reference data, a signal instructing the generation of an alarm is output to the notification control unit 114.

  When the alarm generation instruction is output from the fall risk determination unit 115, the notification control unit 114 drives the light emitter 115 and the speaker 116 to generate an alarm by light and sound.

(Operation)
When the person to be inspected lies on the top plate 72, the fall risk monitoring unit 11 starts operating. The fall risk monitoring unit 11 captures the detection signals output from the edge sensors 101 to 106 by the sensor signal receiving unit 112 at regular time intervals, and receives the detection signals from the edge sensors 101 to 106 based on the received detection signals. A detection pattern of the inspector is generated and output to the fall risk determination unit 113.

  The fall risk determination unit 113 compares the detection pattern output from the sensor signal reception unit 112 with the determination reference data stored in the reference data storage unit 111, and determines whether or not they match. When the detection pattern matches any of the criterion data, a signal instructing the generation of an alarm is output to the notification control unit 114. When receiving the instruction signal, the notification control unit 114 drives the light emitter 115 and the speaker 116 to generate an alarm by light and sound.

  For example, it is assumed that the person to be inspected 3 is currently lying in a substantially central region of the top board 72 as shown in FIG. In this state, since the body of the person to be inspected 3 does not contact the edge sensors 101 to 106, no detection signal indicating that the person to be inspected has been detected is output from the edge sensors 101 to 106. On the other hand, in the reference data storage unit 111, a detection pattern indicating that the subject is not detected by all the edge sensors 101 to 106 is not stored as determination reference data. For this reason, an alarm generation instruction is not output from the fall risk determination unit 113, and as a result, no alarm is generated from the light emitter 115 and the speaker 116.

  On the other hand, it is assumed that the person to be inspected 3 moves on the top plate 72 and thereby the inspected person 3 moves to a position biased to one side of the top plate 72 as shown in FIG. In this case, a detection signal indicating that the subject has been detected is output from the edge sensors 101 to 103. For this reason, the sensor signal receiving unit 112 generates a detection pattern indicating that the inspected person has been detected in the edge sensors 101 to 103 based on the detection signal, and the fall risk determination unit 113 determines this detection pattern. Compared with reference data. At this time, in the reference data storage unit 111, a detection pattern when any one of the edge sensors 101 to 106 is detected is stored as determination reference data. Therefore, the detection pattern matches one of the determination reference data, and as a result, an alarm generation instruction is sent to the notification control unit 114. As a result, light and sound representing an alarm are generated from the light emitter 115 and the speaker 116. For this reason, the medical staff can recognize that there is a risk of the subject being dropped from the top board 72 by this alarm, and can pay attention.

  As described above in detail, in the fourth embodiment, the edge sensors 101 to 106 are disposed on both sides of the top plate 72, respectively, and the inspected person 3 is detected by any of these edge sensors 101 to 106. When this occurs, it is determined that there is a risk that the person to be inspected will fall, and that fact is notified.

  Therefore, when the person to be inspected 3 tries to descend from the top plate 72 on the top plate 72 and a part of the body contacts the edge sensors 101 to 106, alarm light and sound are generated from the light emitter 95 and the speaker 96. . For this reason, the medical staff can surely recognize that the inspected person 3 is in a state of being in danger of falling. In addition, even if the subject 3 is unable to use the fixed band, if there is a risk of falling, this state is surely recognized and attention is paid to the subsequent behavior of the subject. It becomes possible to pay.

[Other Embodiments]
In the medical diagnostic apparatus described in the first or second embodiment, the mat sensors 81 to 89 or the edge sensors 101 to 106 described in the third or fourth embodiment are provided on the top plate 22, and the inspection unit 1 or Determination of fall risk based on the determination result of the drop risk based on the positional relationship between the gantry 5 and the person 3 to be inspected on the top board, and the detection result of the person 3 to be inspected by the mat sensors 81 to 89 or the edge sensors 101 to 106 The final risk of dropping may be determined by combining the results.

  For example, even when the fall risk determination unit 93 or 113 determines that there is a fall risk based on the detection results of the test person 3 by the mat sensors 81 to 89 or the edge sensors 101 to 106, the person to be inspected is placed. When the top plate is moving in the dome of the inspection unit 1 or the gantry 5, it is finally determined that there is no risk of dropping.

  On the other hand, even if the top plate on which the person to be inspected is moved in the dome of the inspection unit 1 or the gantry 5 and the fall risk determination unit 45 determines that there is no risk of dropping, the mat sensors 81 to 81 are used. If the fall risk determination unit 93 or 113 determines that there is a fall risk based on the detection result of the inspected person 3 by the 89 or edge sensors 101 to 106, it is finally determined that there is a fall risk.

  In addition, the safety area / dangerous area setting method for the top plate, means for notifying that there is a fall risk, types and configurations of mat sensors and edge sensors, installation positions, types and configurations of medical diagnostic devices, etc. Various modifications can be made.

  Although some embodiments have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Inspection unit, 2, 6, 7 ... Bed apparatus, 3 ... Inspected person, 4, 9, 11 ... Fall risk monitoring unit, 5 ... Gantry part, 11 ... Slide mount, 12 ... Stand mount, 13, 14 ... Cameras 21, 61, 71... Support frame, 22, 62, 72... Top plate, 41 .. Frame data storage unit, 42 .. Inspected person data storage unit, 43. , 93, 113 ... Fall risk determination unit, 46, 64, 114 ... Notification control unit, 46, 95, 115 ... Speaker, 47, 96, 116 ... Light emitter, 81-89 mat sensor, 92, 112 ... Sensor signal reception Part 101-106 edge sensor.

Claims (9)

An inspection unit formed in a dome shape and a bed device having a top plate on which the subject is placed, and inspecting the subject on the top plate by relatively moving the inspection unit and the top plate A medical diagnostic device inspected by a unit,
The position of the subject to be inspected with respect to the inspection unit or the top plate is detected, and whether or not the subject has a risk of dropping from the top plate based on information representing the detected position. Determination means for determining;
A medical diagnostic apparatus comprising: notifying means for notifying information representing a determination result by the determining means. The determination means includes
Storage means for storing information representing a dangerous area or a non-dangerous area set for the top board based on a relative positional relationship between the inspection unit and the top board;
Detecting the current position of the top plate or the person to be inspected with respect to the inspection unit, comparing the information representing the detected current position with information representing a dangerous area or a non-dangerous area stored in the storage means, The medical diagnostic apparatus according to claim 1, further comprising: a region determination unit that determines whether the current position is included in the dangerous region or the non-dangerous region. The storage means
A first storage unit for storing information representing an initial position of the top plate with respect to the inspection unit;
Means for obtaining information representing the characteristics of the body of the subject;
Means for setting a dangerous area or a non-dangerous area for the top plate based on the information indicating the initial position stored in the first storage unit and the acquired information indicating the characteristics of the body of the subject. When,
The medical diagnostic apparatus according to claim 2, further comprising: a unit that stores information representing the set dangerous area or non-dangerous area in a second storage unit. The determination means includes
A first sensor that is arranged in a preset safety area on the top plate and detects whether or not the subject is located in the safety area;
Means for determining that the subject is in danger of falling from the top board when the first sensor detects that the subject is not located in the safety area; A medical diagnostic apparatus according to claim 1. The determination means includes
A second sensor that is arranged in a predefined danger area on the top plate and detects whether or not an inspected person is located in the danger area;
Means for determining that the subject is in danger of falling from the top board when the second sensor detects that the subject is located in the dangerous area; A medical diagnostic apparatus according to claim 1. The determination means includes
A sensor disposed on the top plate for detecting the position of the subject on the top plate;
Based on the position of the subject detected by the sensor, position determination means for determining whether the subject exists at a position where there is a risk of dropping from the top plate;
Based on the determination result by the region determination means and the determination result by the position determination means, a means for determining whether or not the inspected person is in a state of risk of falling from the top plate, The medical diagnostic apparatus according to claim 2, further comprising: A top board on which the subject is placed,
Whether or not the position of the person to be inspected on the top plate is detected, and whether or not there is a risk that the person to be inspected falls from the top board based on the information indicating the position of the detected person to be inspected Determination means for determining whether or not
A bed apparatus comprising: an informing means for informing information representing a determination result by the determining means. The determination means includes
A first sensor that is arranged in a preset safety area on the top plate and detects whether or not the subject is located in the safety area;
Means for determining that the subject is in danger of falling from the top board when the first sensor detects that the subject is not located in the safety area; The couch device according to claim 7. The determination means includes
A second sensor that is arranged in a predefined danger area on the top plate and detects whether or not an inspected person is located in the danger area;
Means for determining that the subject is in danger of falling from the top board when the second sensor detects that the subject is located in the dangerous area; The couch device according to claim 7.

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