JP5984580B2 - Bed apparatus for medical image diagnostic apparatus and control method thereof - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed apparatus provided on a medical image photographing apparatus such as an X-ray CT apparatus, an MRI apparatus, an X-ray diagnostic apparatus, a fluoroscopic imaging apparatus, a SPECT apparatus, and a PET apparatus, and a control method thereof. Is.

  In the conventional medical image diagnostic apparatus, the operator lowers the bed to the lowest position so that the subject can easily get off the bed after completion of imaging. In order to further improve the imaging efficiency, a method of automatically adjusting the height of the bed to a height at which the subject can easily get on and off by inputting the physical information of the individual to the bed control device has been proposed. (For example, refer to Patent Document 1).

JP 2009-291128 A

  In the bed apparatus of the conventional medical image diagnostic apparatus as described above, if the bed is lowered to the lowest position, it can be placed on the bed relatively easily regardless of the height of the subject, etc. If it is too low, it may take effort to get up. In addition, there are cases where the bed cannot actually be set to an appropriate height simply by adjusting and controlling the height of the bed based on the physical information of the subject individual. In particular, it is difficult to adjust the height of the bed to a height at which the subject can actually stand up when the subject gets off the bed.

  The present invention has been made to solve the above-described problems, and is a medical image diagnostic apparatus capable of adjusting the height of a bed to a height that makes it easier to stand up when the subject gets off the bed. An object is to obtain a bed apparatus and a control method thereof.

  The bed apparatus of the medical image diagnostic apparatus according to the present invention has a bed apparatus body having a bed that can be moved up and down on which a subject is placed, and is arranged side by side on the bed apparatus body on the floor on which the bed apparatus body is installed. A contact detection means for detecting the contact of the legs of the subject, and a control device for controlling the bed apparatus main body, the control apparatus lowers the bed when the subject descends from the bed apparatus main body, The descent of the bed is stopped according to the signal from the contact detection means.

  The bed apparatus of the medical image diagnostic apparatus of the present invention can adjust the height of the bed to a height that makes it easier to stand up when the subject gets off the bed.

It is a block diagram which shows the X-ray CT apparatus by Embodiment 1 of this invention. It is a front view which shows the bed apparatus of FIG. 3 is a flowchart showing an operation after the end of photographing of the system control apparatus of FIG. 1. It is a flowchart which shows the operation | movement after completion | finish of imaging | photography of the system control apparatus of the X-ray CT apparatus by Embodiment 2 of this invention. It is a front view which shows the state which moved the bed of the bed apparatus of Embodiment 2 sideways. FIG. 6 is a front view showing a state in which a subject places his / her foot in the scaffold space under the bed of FIG. 5. FIG. 7 is a front view showing a state in which the subject of FIG. It is a front view which shows the bed apparatus of the X-ray CT apparatus by Embodiment 3 of this invention. It is a front view which shows the case where the subject of FIG. 8 is a crutch user. It is a front view which shows the state which lowered | hung the auxiliary | assistant step of FIG. It is a block diagram which shows the X-ray CT apparatus by Embodiment 4 of this invention. It is a front view which shows a mode that an assistant assists the subject of FIG. 11 getting down from the bed and standing up. It is a top view which shows the position of the subject of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an X-ray CT apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a front view showing the bed apparatus of FIG. In the figure, a bed apparatus main body 2 is installed in the vicinity of the scanner 1. The bed apparatus body 2 includes a bed (top plate) 4 on which the subject 3 is placed and a drive unit 5 that drives the bed 4.

  The bed 4 is provided on the upper part of the bed apparatus main body 2 and can be slid horizontally in the longitudinal direction (left-right direction in FIG. 1) and the width direction (left-right direction in FIG. 2), and can move up and down. ing.

  The drive unit 5 includes a longitudinal movement device 5a that moves the bed 4 in the longitudinal direction, a left-right movement device 5b that moves the bed 4 in the width direction, and a vertical movement device 5c that moves the bed 4 up and down. Yes. A bed control device 6 that controls the bed device main body 2 is connected to the drive unit 5.

  The system control device 7 controls the scanner 1, the bed control device 6 and the like, and executes photographing processing. The system control device 7 is provided with an operation console 9 operated by an operator 8.

  On the floor surface on which the bed apparatus main body 2 is installed, a contact sensor 10 as contact detection means for detecting contact of the legs of the subject 3 is arranged side by side on the bed apparatus main body 2. As the contact sensor 10, a plurality of pressure detection elements arranged in a matrix at a predetermined pitch can be used.

  A detection signal from the contact sensor 10 is input to the system control device 7. The system control device 7 outputs a command for lowering the bed 4 to the bed control device 6 when the subject 3 gets down from the bed device main body 2, and then lowers the bed 4 according to a signal from the contact sensor 10. A command for stopping is output to the bed control device 6.

  Next, the operation will be described. FIG. 3 is a flowchart showing the operation of the system control device 7 of FIG. At the time of imaging, the subject 3 is sleeping on the bed 4. When the imaging is completed, the operator 8 or an automatic voice announcement instructs the subject 3 to wake up and sit on the bed 4 sideways.

  When it is confirmed that the subject 3 is seated on the bed 4, the operator 8 inputs a command for lowering the bed 4 to the system control device 7. Thereby, the system control apparatus 7 outputs a bed lowering command to the bed control apparatus 6 (step S1). Thereafter, the system control device 7 monitors whether or not the leg of the subject 3 has been detected by the contact sensor 10 (step S2).

  The bed 4 is slowly lowered continuously until the leg of the subject 3 is detected. And if the leg part of the subject 3 is detected by the contact sensor 10, the command which stops the descent | fall of the bed 4 will be output to the bed control apparatus 6 (step S3).

  At this time, in what detection state the descent of the bed 4 is stopped can be appropriately set. For example, the bed stop command may be output immediately after the leg of the subject 3 comes into contact with the contact sensor 10 in consideration of the operation delay of the bed 4. Further, when contact is detected by a predetermined number or more of pressure detection elements, it may be determined that the entire soles of both feet have contacted the contact sensor 10, and a bed stop command may be output. Furthermore, a couch stop command may be output after a predetermined time after the leg of the subject 3 comes into contact with the contact sensor 10.

  In such a bed apparatus of the X-ray CT apparatus, the contact sensors 10 for detecting contact of the legs of the subject 3 are arranged side by side on the bed apparatus main body 2, and when the subject 3 descends from the bed apparatus main body 2, the bed 4, and the descent of the couch 4 is stopped according to the signal from the contact sensor 10, so that the couch 4 can be stopped at an appropriate height in order to stand up in the individual body state of the subject 3, When the subject 3 gets off the bed 4, the height of the bed 4 can be adjusted to a height that makes it easier to stand up.

  Therefore, it is possible to efficiently get on and off the subject 3 to the bed 4, improve the imaging efficiency, and improve the operation rate of the X-ray CT apparatus.

Embodiment 2. FIG.
Next, FIG. 4 is a flowchart showing the operation after the end of imaging of the system controller 7 of the X-ray CT apparatus according to Embodiment 2 of the present invention, and the overall configuration of the X-ray CT apparatus is the same as that of FIG. In the second embodiment, the system control device 7 detects not only that the subject 3 has contacted the contact sensor 10 but also the position of the center of gravity and movement of the center of gravity of the subject 3 based on the signal from the contact sensor 10.

  Further, the system control device 7 outputs a command for moving the couch 4 by a predetermined amount to the couch control device 6 after outputting a command to stop the descent of the couch 4 to the couch control device 6 (step S4). .

  Thereafter, the system control device 7 monitors whether or not the center of gravity of the subject 3 has moved to a preset position on the contact sensor 10 based on a signal from the contact sensor 10 (step S5). Then, when the center of gravity of the subject 3 moves to the set position, a command for laterally moving (retreating) the bed 4 to the original position is output to the bed control device 6 (step S6).

  Here, normally, the center of gravity of the subject 3 sitting to get off the bed 4 is on the bed apparatus main body 2 side. In addition, as a person standing up, it is possible to stand up by moving the center of gravity in the direction of rising up. For this reason, as shown in FIG. 2, when a sufficient scaffold space is not secured below the bed 4, the center of gravity when standing up also remains on the bed apparatus main body 2 side, and in order to stand up, a forward leaning posture is required. It needs to be and labor is required.

  In contrast, in the second embodiment, the bed 4 is stopped at an appropriate height by a signal from the contact sensor 10, and then the bed 4 is slid horizontally to the front of the subject 3 standing up. Thus, the scaffold space 11 can be ensured directly under the bed 4. As a result, as shown in FIG. 6, the subject 3 can place his / her foot in the scaffold space 11, the center of gravity can be easily moved, and the person can easily stand up.

  Further, when standing up with the scaffold space 11 provided, if the user tries to stand up straight as it is, the knee or leg of the subject 3 may come into contact with the bed 4, which may be an obstacle when the bed 4 stands up. On the other hand, in the second embodiment, the contact sensor 10 detects the movement of the center of gravity of the subject 3 to confirm that the subject 3 has descended from the bed 4, and the bed is moved backward in the direction in which the subject 3 rises. Since the bed 4 is slid sideways, the bed 4 does not get in the way, and the subject 3 can stand up straight as shown in FIG.

The system controller 7 estimates the positions of the toes and heels of the subject 3 based on the signal from the contact sensor 10 and performs the front side slide and the rear side slide of the bed 4 when the subject 3 stands up. The amount of movement may be adjusted.
In the second embodiment, the bed 4 is lowered and then moved laterally. However, the bed 4 may be moved laterally by a predetermined amount, or may be moved horizontally while being lowered, that is, moved obliquely downward.
Further, the operation of retracting the bed 4 to the original position may not be automatically performed, but may be performed by the operation of the operator 8 after the subject 3 stands up.

Embodiment 3 FIG.
Next, FIG. 8 is a front view showing a bed apparatus of an X-ray CT apparatus according to Embodiment 3 of the present invention. In this example, the contact sensor 10 is provided on the auxiliary step 12. The auxiliary step 12 supports the contact sensor 10 so as to be movable up and down. The vertical movement of the contact sensor 10 is controlled by the system control device 7. Other configurations are the same as those in the first or second embodiment.

  For example, when the subject 3 is small or a child, the leg may not be detected by the contact sensor 10 simply by lowering the bed 4. In such a case, when the subject 3 descends from the bed apparatus main body 2, the leg 4 can be detected more reliably by lowering the bed 4 and raising the contact sensor 10 by the auxiliary step 12.

  At this time, the lowering of the bed 4 and the raising of the contact sensor 10 are performed at the same time, and if the leg of the subject 3 is detected by the contact sensor 10, the lowering of the bed 4 and the raising of the contact sensor 10 may be stopped simultaneously. Good. Further, when the leg is not detected even when the bed 4 is lowered to the lowest position, the contact sensor 10 may be raised until the leg is detected. Further, after raising the contact sensor 10 by a predetermined amount, the bed 4 may be lowered until a leg is detected.

  In addition, when the subject 3 gets on the bed 4 (sleeps), the movement onto the bed 4 can be facilitated by raising the contact sensor 10. At this time, data for getting on the bed 4 may be recorded as an increase amount of the contact sensor 10 when getting off the bed 4.

  Furthermore, as shown in FIG. 9, when the subject 3 is a crutch user, it may be easier to stand up if the leg is above the floor surface. In this case, the tip of the crutch is fixed on the floor, and the position of the pad of the crutch is set to the side of the subject 3, and the bed 4 is lowered according to a height at which the grip stored in advance is easily grasped. And the contact sensor 10 is raised until a leg part is detected, and it is set as a scaffold.

  Thereafter, when the rising of the subject 3 is detected, the contact sensor 10 is lowered as shown in FIG.

  According to such a bed apparatus, it is possible not only to reduce the burden of rising of the subject 3, but also to reduce the burden of the operator 8 who assists the rising.

  In addition, when the raising amount of the contact sensor 10 can be secured sufficiently, the bed 4 is not lowered, the contact sensor 10 is raised until the leg is detected, and then the contact sensor 10 is moved to the lowest position after confirming the movement of the center of gravity. May be lowered.

Embodiment 4 FIG.
Next, FIG. 11 is a block diagram showing an X-ray CT apparatus according to Embodiment 4 of the present invention, and FIG. 12 shows how an assistant 14 assists the subject 3 of FIG. 11 to get down from the bed 4 and stand up. FIG. 13 is a plan view showing the positions of the feet of the subject 3 and the assistant 14 in FIG.

  In this example, a reverse permission switch 13 is provided in the vicinity of the contact sensor 10 on the floor surface. The retreat permission switch 13 is operated by an assistant 14 who assists the subject 3 to get down from the bed 4 and stand up. The system control device 7 permits the backward movement of the bed 4 protruding in the lateral direction (step S6 in FIG. 4) only when the backward permission switch 13 is operated. Other configurations and operations are the same as those in the second embodiment.

  In such a bed apparatus, when the subject 3 gets down from the bed 4 and stands up, the position of the foot of the subject 3 is the position shown in 3a of FIG. 13, and the position of the foot of the assistant 14 is shown in 14a of FIG. Position. That is, the assistant 14 supports the subject 3 while operating the retreat permission switch 13 with one foot. In a state in which the retreat permission switch 13 is not operated by the assistant 14, the bed 4 protruding in the lateral direction does not automatically retreat, so that it is possible to more reliably prevent the subject 3 from falling backward. it can.

The auxiliary step 12 of the third embodiment and the backward permission switch 13 of the fourth embodiment may be installed in combination.
Moreover, although the bed apparatus of the X-ray CT apparatus is shown in the first to fourth embodiments, the bed apparatus of another medical image diagnostic apparatus such as an MRI apparatus, an X-ray diagnostic apparatus, a fluoroscopic imaging apparatus, a SPECT apparatus, or a PET apparatus The present invention can also be applied to other couch devices.
Furthermore, the contact detection means is not limited to the contact sensor 10 described above. For example, the contact detection means includes a detection plate that is lowered by contact of the leg of the subject, a detection switch that is operated when the detection plate is lowered, and a restoring spring that biases the detection plate upward. It may be a thing. Further, a device using a plurality of proximity sensors or a device using a plurality of photoelectric sensors may be used.

  2 bed device main body, 3 subject, 4 bed, 6 bed control device, 7 system control device, 10 contact sensor (contact detection means), 11 scaffold space, 12 auxiliary step, 13 retreat permission switch.

Claims (9)

A bed apparatus main body having a bed that can move up and down on which a subject is placed;
A contact detection means for detecting contact of the legs of the subject; and a control device for controlling the bed apparatus main body, arranged side by side on the bed apparatus main body on the floor on which the bed apparatus main body is installed. ,
The control apparatus lowers the bed when the subject descends from the bed apparatus main body, and stops the lowering of the bed in response to a signal from the contact detection means. Equipment couch device. The bed is slidable horizontally in the width direction,
2. The medical image according to claim 1, wherein when the subject descends from the bed apparatus main body, the control apparatus moves the bed sideways so that a scaffold space is secured immediately below the bed. 3. A bed device for a diagnostic device.   3. The bed apparatus of the medical diagnostic imaging apparatus according to claim 2, wherein the control apparatus moves the bed sideways and then moves the bed back to an original position in accordance with a signal from the contact detection unit. . A retreat permission switch provided in the vicinity of the contact detecting means on the floor surface;
4. The bed device of the medical image diagnostic apparatus according to claim 3, wherein the control device permits the bed to move backward only when the backward permission switch is operated. An auxiliary step of supporting the contact detection means so as to be movable up and down;
The control device raises the contact detection means by the auxiliary step and stops raising the contact detection means according to a signal from the contact detection means when the subject descends from the bed apparatus main body. The bed apparatus of the medical image diagnostic apparatus according to any one of claims 1 to 4, wherein the bed apparatus is a medical image diagnostic apparatus. A bed apparatus main body having a bed that can move up and down on which a subject is placed;
A contact detecting means arranged on the bed apparatus main body on the floor on which the bed apparatus main body is installed, and detecting contact of the legs of the subject;
An auxiliary step for supporting the contact detection means in a vertically movable manner, and a control device for controlling the bed apparatus main body and the auxiliary step.
The control device raises the contact detection means by the auxiliary step and stops raising the contact detection means according to a signal from the contact detection means when the subject descends from the bed apparatus main body. A bed apparatus for a medical image diagnostic apparatus. A step of lowering the bed when the subject is lowered from the bed provided on the upper part of the bed apparatus main body, and the bed apparatus main body arranged side by side on the floor on which the bed apparatus main body is installed. A method for controlling a couch device of a medical image diagnostic apparatus, comprising the step of stopping the descent of the couch in response to a signal from a contact detection means for detecting contact of a leg.   The method for controlling a bed apparatus of a medical image diagnostic apparatus according to claim 7, further comprising a step of horizontally moving the bed in a horizontal direction after stopping the descent of the bed.   The control of the bed apparatus of the medical diagnostic imaging apparatus according to claim 7, wherein when the bed is lowered, the bed is moved obliquely downward so that a scaffold space is secured directly below the bed. Method.

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