JP6054170B2 - Diagnostic imaging apparatus and bed apparatus - Google Patents

Description

  Embodiments described herein relate generally to an image diagnostic apparatus and a bed apparatus used therefor.

  As the aging society progresses, the number of elderly outpatients is expected to increase. In an imaging diagnostic apparatus such as an MRI (Magnetic Resonance Imaging) apparatus, a PET (Positron Emission Tomography) apparatus, or an X-ray CT (Computed Tomography) apparatus having a gantry, the patient is lying on a bed and the patient is moved into the gantry. Shooting is performed. However, in the conventional diagnostic imaging apparatus, since there is no handgrip part such as a handrail on the bed, there is a possibility that the elderly may fall down when getting on and off the bed.

  The patient lies down on the couch top with the couch lowered, but if there is no part that can be grasped by the hand, elderly people cannot change their posture by themselves, so assistance from nurses, radiologists or doctors is necessary. . In order to solve these problems, we added handrails according to the ability to move the patient's body (hereinafter referred to as handrails and safety guards to prevent falls) and changed to the necessary structure. There is a possible bed (for example, see Patent Document 1).

  However, at the time of imaging, the bed is raised and the patient is moved into the gantry by sliding the bed top. At this time, from the viewpoint of safety, it is necessary to prevent the patient from grasping the auxiliary bar and the catheter, puncture needle, drip tube and the like attached to the patient from being caught by the auxiliary bar. As described above, the auxiliary bar is necessary when a physically handicapped patient gets on and off, but needs to be evacuated to a safe place at the time of photographing. However, repeating the attachment / detachment of the auxiliary bar with a human hand is not preferable from the viewpoint of rapid diagnosis.

JP 2011-92545 A

  The problem to be solved by the present invention is to solve the above-mentioned problems, and when necessary, the diagnostic bar and the bed can be provided so that the auxiliary bar appears on the upper side of the top frame, and when not needed, the auxiliary bar can be automatically retracted from the upper side of the top frame. An object is to provide an apparatus.

To achieve the above object, the bed apparatus of the present embodiment is attached to a top plate on which a subject is placed, a top frame that supports the top plate to be slidable in the longitudinal direction, and a side surface of the top frame A movable auxiliary bar, a vertical direction control unit that varies the height of the top frame, and an auxiliary bar control unit that controls the position of the auxiliary bar to be retractable from the upper side of the top frame , The auxiliary bar control unit sets a bed height detection unit that detects the height of the top frame, at least two first height ranges and a second height range, and sets the height of the top frame. Is in the first height range, the auxiliary bar appears above the top frame, and when the top frame is in the second height range, the auxiliary bar is Auxiliary bar driving part for retreating from the top plate frame upper side Having.

In addition, the diagnostic imaging apparatus of the present embodiment includes a gantry that images a subject, a bed that moves the subject to an imaging position in the gantry, a gantry control unit that controls imaging of the gantry, and the top of the bed. A longitudinal control unit that moves the plate in the longitudinal direction, a vertical control unit that changes the height of the bed, and an auxiliary bar that is attached to the side of the top frame that supports the top plate of the bed are controlled to be retractable. An auxiliary bar control unit, and the auxiliary bar control unit includes a bed height detecting means for detecting a height of the top frame, at least two first height ranges and a second height range. When the height of the top frame is in the first height range, the auxiliary bar appears above the top frame and the height of the top frame is the second height. When it is within the range, the auxiliary bar is Having a support bar driving means for retracting from over beam upper side, a.

1 is a block configuration diagram of an entire diagnostic imaging apparatus according to an embodiment. Explanatory drawing of the position of the auxiliary bar at the time of a boarding / alighting. Explanatory drawing of the position of the auxiliary bar at the time of imaging | photography. The block block diagram of an auxiliary bar control part. The lineblock diagram of the bed apparatus of a 1st embodiment. The flowchart figure explaining operation | movement of the image diagnostic apparatus of the embodiment. The block diagram of the bed apparatus of 2nd Embodiment. Explanatory drawing of the mechanism components which comprise an auxiliary bar control part. Explanatory drawing of operation | movement of the auxiliary bar control part at the time of a bed fall. Operation | movement explanatory drawing of the auxiliary bar control part at the time of a bed rise.

  Hereinafter, embodiments will be described in detail with reference to FIGS. 1 to 10. In the following description, components having substantially the same function and configuration are denoted by the same reference numerals, and redundant description will be given only when necessary.

(Device configuration)
The image diagnostic apparatus of this embodiment shown in FIG. 1 is an X-ray CT apparatus, but this embodiment can be applied to an image diagnostic apparatus having a gantry. As shown in FIG. 1, the diagnostic imaging apparatus according to the present embodiment is largely divided into a gantry unit 10, a bed unit 20, and a console unit 30 for constituting an X-ray CT apparatus.

  The gantry unit 10 includes a gantry 11 for imaging the subject P. The gantry 11 includes an X-ray generation unit 12 that generates X-rays for the subject P placed on the bed 1, and the subject P. X-ray detection unit 13 for detecting X-rays transmitted through the X-ray, a DAS (Data Acquisition System) unit 14 for collecting data acquired by the X-ray detection unit 13 and transmitting the data to the outside of the gantry 11 and the like. Furthermore, it has a high voltage generator 15 that generates a high voltage to be applied to the X-ray generator 12.

  The bed unit 20 includes a bed 21 for moving the subject to the gantry 11. The bed 21 includes a longitudinal control unit 23 for moving the bed top 22 in the gantry and upper and lower sides for controlling the height of the bed 21. It has the direction control part 24 and the auxiliary bar control part 27 which controls the auxiliary bar 26 arrange | positioned on the side surface of the top plate frame 25 which supports the bed top plate 22 so that a slide is possible in a longitudinal direction.

  The console unit 30 includes a system control unit 31 that integrally controls the gantry unit 10 and the bed unit 20 and an image processing unit 32 that processes volume data collected by the gantry unit 10 into various medical images. The system control unit 31 includes a bed control unit 33 that controls the bed unit 20, a gantry control unit 34 that controls the gantry unit 10, and an image processing control unit 35 that controls the image processing unit 32.

  The image processing unit 32 includes an image reconstruction unit 36 for reconstructing the volume data collected by the gantry unit 10, an image display for performing format conversion, color adjustment, noise reduction processing, and the like so that the reconstructed image is suitable for display. It has a processing unit 37 and a monitor unit 38 for displaying various medical images.

  The console unit 30 is composed of a high-performance computer, and has a general configuration such as a CPU, memory, and storage (not shown). An operation unit 39 having a mouse, a trackball, various levers, buttons and the like is connected to operate the X-ray CT apparatus.

  FIG. 2 is a diagram for explaining the position of the auxiliary bar 26 when the subject P gets on and off the bed 21, and FIG. 3 is a diagram for explaining the position of the auxiliary bar 26 when the subject P is imaged. .

  As shown in FIG. 2, when the subject P gets on the bed 21, the patient P lies on the bed top plate 22 with the bed 21 lowered. Auxiliary bars 26a and 25b are installed on the bed 21 so that the patient can easily grasp the hand and change his / her posture. In addition, even when shooting is finished and the user gets off the bed 21, the auxiliary bar 26 (26a, 26b) is provided so that the rising operation can be easily performed.

  The auxiliary bar 26a is a relatively long auxiliary bar installed on the side surface of the top plate frame 25 opposite to the boarding / alighting side. This is easy to grasp at any position and is effective for preventing falling (safety guard) when lying down. The auxiliary bar 26b is an auxiliary bar that is installed on the board frame on the boarding / exiting side and is shorter than the auxiliary bar 26a. This does not get in the way when getting on and off, and is effective in changing the posture or in the rising motion.

  Usually, the direction of getting on and off the subject P is determined according to the hospital equipment layout, and these auxiliary bars 26 can be attached to either the left or right according to the needs of the user (hospital).

  As shown in FIG. 3, when imaging the subject P, the subject P placed on the bed top 22 is moved to the opening of the gantry 11. The auxiliary bar 26 is retracted from the upper side of the top frame 25 to the lower side so that the catheter, puncture needle, drip tube, etc. attached to the subject P are not caught by the auxiliary bar 26 as the bed top plate 22 moves. . The retreating method includes a method of sliding downward so as to be hidden in the top frame 25 as shown in the auxiliary bar 26a, or a method of revolving so as to turn downward as shown in the auxiliary bar 26b. is there.

(First embodiment)
FIG. 4 is a block diagram of the auxiliary bar control unit 27. FIG. 5 is a view of the bed 21 incorporating the auxiliary bar control unit 27 as viewed from the top. For explanation, only one auxiliary bar 26 is shown.

  The auxiliary bar control unit 27 includes a bed height detection unit 41 that detects the vertical movement of the bed 21 and the bed height controlled by the vertical direction control unit 24, a controller unit 42 that controls the auxiliary bar according to the bed height, And an auxiliary bar driving unit 43 that drives the auxiliary bar 26 by a control signal output from the controller unit 42.

  Various sensors such as a wire encoder and a distance sensor can be used to detect the height of the bed 21 in the bed height detection unit 41. In FIG. 5, the bed height is detected by a wire encoder 52 (reference numeral 53 indicates an encoder wire).

  The controller unit 42 determines whether the height detection value of the bed height detection unit 41 is within a predetermined threshold value or a predetermined height range. In a specific example, the first height range when the bed 21 descends within a certain range for getting on and off, and the case where the bed 21 rises to a certain range near the opening of the gantry 11 for photographing. Two height ranges of the second height range are set. The predetermined threshold value or height range can be set and changed from the system control unit 31. Also, more than two height ranges may be set.

  The auxiliary bar drive unit 43 includes a drive gear 54, a motor 55, and the like, and operates the auxiliary bar 26 based on a control signal from the controller unit 42. The motor 55 may rotate to retract the auxiliary bar 26, or may be operated in the vertical (up and down) direction using a linear motor or the like. The drive gear 54 is used for acceleration and deceleration so that the auxiliary bar 26 operates safely as necessary.

  That is, when the bed 21 is lowered within a certain height range for getting on and off (first height range), the auxiliary bar 26 appears on the top frame 25 and near the opening of the gantry 11 for photographing. When it rises to a certain range (second height range), the auxiliary bar 26 can be retracted from the upper side of the top frame 25 to the lower side.

  The operation of the diagnostic imaging apparatus configured as described above will be described with reference to the flowchart of FIG. In step ST601, the bed 21 is lowered to prepare for receiving the subject P (patient). At this time, when the bed height is in the first height range, the controller unit 42 controls the auxiliary bar driving unit 43 to make the auxiliary bar 26 appear. At this time, for example, only the auxiliary bar 26a of FIG. 3 may appear, and any one of the plurality of auxiliary bars 26 may be selected according to the physical ability of the patient. Moreover, in the case of a healthy person, you may set so that the auxiliary bar 26 may not appear at all. This will be described in the operation mode described later.

  In step ST602, the subject P changes his posture so that he can lie down while holding the auxiliary bar 26 (26a, 26b) that appears as shown in FIG.

  After the subject P lies down on the bed 21, the bed 21 is raised to the opening of the gantry 11 in step ST <b> 603. At this time, when the bed height is within the second height range, the controller unit 42 controls the auxiliary bar driving unit 43 to retract the auxiliary bar 26 from the upper side of the top frame 25. At this time, it is operated after confirming safety such as whether or not the subject P is holding the auxiliary bar 26. In addition, a message for prompting attention may be output as an image or sound.

  In step ST604, the bed top plate 22 on which the subject P is placed is inserted into the opening of the gantry 11, and CT imaging of the subject P is performed.

  In step ST605, after the CT imaging is completed and the bed top plate 22 on which the subject P is placed moves to the outside of the gantry 11, the height of the bed 21 is set to the height range when getting on and off (first height range). Move up. At this time, the auxiliary bar 26 is caused to appear above the top frame 25 in the same manner as in step ST601.

  In step ST606, the subject P rises and descends the couch 21 while being held by the auxiliary bar 26.

  As described above, according to the first embodiment, when the subject gets on and off the bed, it is possible to lie on the bed safely by causing the auxiliary bar to appear. In addition, since the auxiliary bar can be retracted during imaging, it is possible to prevent the auxiliary bar from being caught when moving the gantry such as a catheter, a puncture needle, and an infusion tube attached to the subject. In addition, according to the hospital equipment layout, the physical ability of the subject, etc., it is possible to select the location where the auxiliary bar is attached or the auxiliary bar that operates. Thereby, it is possible to automatically perform the operation without being aware of the appearance / retraction of the auxiliary bar in a series of flow from the subject lying on the bed to the end of imaging.

  In the present embodiment, since the bed 21 is controlled by the system control unit 31, the operation of the auxiliary bar 26 can be operated at the time of getting on and off and at the time of shooting. For example, when the subject is placed on the bed from the stretcher with the bed raised, the auxiliary bar may or may not function as a safety bar.

  For such a case, in the system control unit 31, operation modes corresponding to the physical ability of the subject such as a stretcher mode, an elderly person mode, a wheelchair mode, and a healthy person mode are prepared. The auxiliary bar to be operated may be selected simultaneously with setting the height range in which the auxiliary bar 26 operates. Furthermore, the auxiliary bar 26 may be made to appear and retract manually at an arbitrary timing from the operation unit 39.

  Moreover, since this embodiment can attach an auxiliary bar control part to the conventional bed apparatus as an option, it can be implemented only by modifying the software of the system control part.

(Second Embodiment)
In the first embodiment, the couch device based on electrical control has been described, but this embodiment describes a couch device realized by a mechanical control method.

  FIG. 7 is a configuration diagram of the bed apparatus of the present embodiment. FIG. 8 is an explanatory diagram of the mechanical parts constituting the auxiliary bar control unit 27. In the present embodiment, the auxiliary bar 26 installed on the side surface of the top frame 25 appears and retracts according to the height of the bed 21.

  As shown in FIGS. 7 and 8, a support member 72 fixed to a support base 71 that supports the bed 21, and a telescopic member 73 fixed to the upper part of the support member 72 and having a variable length within a predetermined range, An auxiliary bar receiving member 74 formed on the upper portion of the expansion / contraction member 73 and a push-down member 75 that contacts the auxiliary bar receiving member 74 and expands / contracts the expansion / contraction member 73 in the vertical direction.

  In the present embodiment, the elastic member 73 will be described by taking a spring as an example, but other members such as an air damper may be used. The length of the elastic member 73 can be varied from Lmin to Lmax. When the expansion / contraction member 73 is a spring, the length contracted to the maximum by applying a force is Lmin, and the length when no force is applied is Lmax. The push-down member 75 is fixed to the lower side of the top frame 25, and a guide hole 81 for moving the auxiliary bar 26 up and down relative to the top frame 25 is formed. The vertical length of the auxiliary bar 26 is determined so that the auxiliary bar 26 appears at a height H above the top frame 25 at the height of the bed when getting on and off, with the bottom surface of the pressing member 75 as a reference. The Although the guide hole 81 for guiding the vertical movement of the auxiliary bar 26 is formed in the push-down member 75, a guide member may be provided separately.

  The operation of the bed apparatus configured as described above will be described with reference to FIGS. 9 and 10. FIG. 9 is an operation explanatory diagram of the auxiliary bar control unit 27 when the bed is lowered. FIG. 10 is an explanatory diagram of the auxiliary bar control unit 27 when the bed is raised.

  FIG. 9 shows a state where the bed 21 is lowered most. By lowering the bed 21, the push-down member 75 comes into contact with the auxiliary bar receiving member 74, and the length of the elastic member 73 fixed to the auxiliary bar receiving member 74 can be contracted from Lmax to Lmin. At this time, the auxiliary bar 26 rises to the upper side of the top frame 25 along the guide hole 81 formed in the push-down member 75. On the contrary, even if the height of the bed 21 is raised until the length of the expansion / contraction member 73 reaches Lmin to Lmax, the auxiliary bar 26 may be allowed to appear above the top frame 25 at a certain height H. it can.

  As shown in FIG. 10, the push-down member 75 does not come into contact with the auxiliary bar receiving member 74 when the length of the expansion / contraction member 73 is equal to or greater than the bed height Lmax, so that the auxiliary bar 26 is lowered by its own weight. As a result, it is possible to retreat into a groove formed in the top plate frame 25 (not shown).

  That is, by adjusting the contraction range (Lmin to Lmax) of the length of the telescopic member 73 and the dimensions of the other support members 72, the push-down members 75, etc., the auxiliary bar 26 appears in a predetermined bed height range lowered. When the bed 21 is raised above a predetermined height, the auxiliary bar 26 can be retracted from the upper side of the top frame 25.

  As described above, according to the second embodiment, the bed apparatus can be configured with the mechanical parts, so that it is very inexpensive and can be implemented without requiring control from the image diagnostic apparatus in principle. Therefore, since work such as software modification is not required, the present invention can be applied immediately to any diagnostic imaging apparatus.

  As described above, in this embodiment, the auxiliary bar can appear on the top plate frame when necessary, and the auxiliary bar can be automatically retracted from the top plate frame when not necessary. Thereby, it becomes possible to lie down on a bed safely for a patient who is anxious about physical ability, such as an elderly person.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention.

  In the embodiment, CT imaging of an elderly person has been described as an example, but the present invention is not limited to this. Similarly, the present invention is not limited to the flowchart described above. Further, although an X-ray CT apparatus has been described as an example of an image diagnostic apparatus, the present invention can also be applied to an MRI (Magnetic Resonance Imaging) apparatus having a gantry, a PET (Positron Emission Tomography) apparatus, and the like.

  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.

10 ... the gantry,
11 ... Gantry,
12 ... X-ray generator,
13 ... X-ray detection unit,
14 ... DAS department,
15 ... high voltage generator,
20 ... Sleeper,
21 ... Bed,
22 ... top plate,
23: Longitudinal direction control unit,
24 .. Vertical control unit,
25 ... Top frame 26, 26a, 26b ... Auxiliary bar,
27 ... Auxiliary bar control unit,
30 ... Console section,
31 ... System control unit,
32. Image processing unit,
33 ... Sleeper controller,
34 ... gantry controller
35. Image processing control unit,
36. Image reconstruction unit,
37. Image display processing unit,
38 ... monitor section,
39: Operation unit.

Claims (4)

A top plate on which the subject is placed;
A top plate frame that supports the top plate so as to be slidable in the longitudinal direction;
Auxiliary bar attached to the side of the top frame and movable,
An up-down direction control unit that varies the height of the top frame,
An auxiliary bar control unit that controls the position of the auxiliary bar to be retractable from the top frame upper side,
The auxiliary bar control unit includes a bed height detection unit that detects the height of the top frame,
When at least two first height ranges and second height ranges are set, and the height of the top frame is in the first height range, the auxiliary bar is placed on the top frame upper side. And an auxiliary bar driving unit for retracting the auxiliary bar from the top frame frame when the height of the top frame is in a second height range;
That having a sleeping platform devices. Said auxiliary bar controller, the bed apparatus according to claim 1, wherein the at least two first height range and the second height range is set for each operation mode corresponding to the degree of the subject's body capacity. A top plate on which the subject is placed;
A top plate frame that supports the top plate so as to be slidable in the longitudinal direction;
Auxiliary bar attached to the side of the top frame and movable,
An up-down direction control unit that varies the height of the top frame,
An auxiliary bar control unit that controls the position of the auxiliary bar to be retractable from the top frame upper side,
The auxiliary bar controller is
A support member fixed to the bed support,
An elastic member fixed to the upper portion of the support member and having a variable length within a predetermined range;
An auxiliary bar receiving member formed on the upper part of the elastic member;
When the height of the top frame is within a predetermined value or a predetermined height range, a push-down member that expands and contracts the elastic member in contact with the auxiliary bar receiving member;
A guide member for guiding the auxiliary bar in the vertical direction;
That having a sleeping platform devices. A gantry to image the subject,
A bed for moving the subject to the imaging position in the gantry;
A gantry control unit for controlling photographing of the gantry;
A longitudinal control unit for moving the couch top in the longitudinal direction;
An up-down direction control unit for changing the height of the bed;
An auxiliary bar controller for removably controlling an auxiliary bar attached to a side surface of the top plate frame that supports the top plate of the bed;
Have
The auxiliary bar control unit includes a bed height detecting means for detecting a height of the top frame,
When at least two first height ranges and second height ranges are set, and the height of the top frame is in the first height range, the auxiliary bar is placed on the top frame upper side. And an auxiliary bar driving means for retracting the auxiliary bar from the upper side of the top plate frame when the top plate frame is in a second height range.
Images diagnostic devices that have a.

Images