JP2005143661A - Bed for image diagnostic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bed for an image diagnostic device for making it possible to photograph images while measuring biological information without imposing a load on a patient and making him/her be conscious. <P>SOLUTION: The bed for the image diagnostic device is composed of a top plate on which an examinee is to be mounted, a driving means for driving the top plate, a sensor unit part having a sensor unit arranged movably on the top plate for detecting the variation in a biological information pressure received from the examinee, a pressure signal processing means for processing the variation in the biological information pressure detected by the sensor unit of the sensor unit part, and a display means for displaying the biological information processed in the pressure signal processing means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bed for an image diagnostic apparatus, and more particularly to a bed for an image diagnostic apparatus capable of obtaining biological information without imposing a burden on a subject.

  Conventionally, biological information such as respiration and heartbeat has been measured by attaching various sensors to a subject. For example, in the measurement of respiration, there is a method in which a belt-like belt is attached to the waist of the subject and a respiratory signal is obtained by dynamically capturing the body movement of the subject. The respiratory measurement device is composed of a belt-like belt and a tension sensor, and the tension sensor monitors the change in tension when the abdomen is overlapped by pulling the abdomen by pulling the abdomen and pulling it back. Is.

  The signal obtained by the tension sensor reflects the respiration of the subject, and is used for generating a trigger signal for collecting images by respiration synchronization.

In addition, recently, for the purpose of health management monitoring, by detecting the heart rate and respiratory rate during sleep with a pressure sensor attached to the bed, it is possible to detect respiration and heart rate without imposing a burden on the subject. A bed is reported (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 11-28195 (page 3-4, FIG. 1)

  The measurement of biological information performed at the time of image diagnosis requires the installation of a sensor for taking out biological signals such as breathing and heartbeat, which imposes a physical and mental burden on the patient. May interfere with measurement. In addition, there is also the trouble of bringing the measurement instrument into and attaching to the diagnostic imaging room in advance in the diagnostic room, and therefore it was impossible to respond quickly in an emergency.

  Furthermore, at the time of image diagnosis, even if it is necessary to stop breathing and take an image, the technician only asks the patient to stop breathing. There was no way.

  The present invention has been made to solve the above-described problems, and can easily measure biological information such as breathing, heartbeat, and body movement, and simultaneously take an image without burdening the patient. An object is to provide a bed for an image diagnostic apparatus.

  In order to solve the above problems, the image diagnostic apparatus bed according to the present invention, a top plate on which a subject is placed, a driving means for driving the top plate, and a movable means on the top plate, A sensor unit section provided with a sensor unit for detecting a variation in biological information pressure received from the subject, a pressure signal processing means for processing a variation in biological information pressure detected by the sensor unit of the sensor unit section, and the pressure signal It comprises display means for displaying biological information processed by the processing means.

  According to the present invention, by attaching a detector for detecting respiration, heartbeat, body movement, and the like to a bed for an image diagnostic apparatus, it is possible to easily measure biological information without imposing a burden on the patient and simultaneously take an image with high accuracy. Can be done.

  In addition, by adjusting the temperature of the biological information detector, it is possible to give consideration to painful patients when the elderly person or the affected part is cooled.

  Hereinafter, a bed for an image diagnostic apparatus according to an embodiment of the present invention will be described.

  FIG. 1 shows the configuration of a bed for an image diagnostic apparatus according to Embodiment 1 of the present invention. The image diagnostic apparatus bed 1 is disposed between a top plate 42 on which a subject is placed, a bed driving unit 41 that drives the top plate 42, and the top plate 42 and the subject P. A sensor unit 10 that detects pressure, a tube 15 that transmits the pressure of the sensor unit 10 to the pressure sensor 20, a pressure sensor 20 that detects the pressure of the sensor unit 10 and converts it into an electrical signal, and a pressure sensor 20, a signal processing unit 30 that processes a signal from the display unit 20, a display unit 45 that displays a measurement result of biological information, a bed control unit 40 that controls the entire bed 1 for an image diagnostic apparatus, and the operation of the bed driving unit 41, The operation unit 46 is configured to perform operations for collecting and displaying information.

  The bed driving unit 41 includes a bed vertical driving unit 43 that moves the bed up and down and a table horizontal driving unit 44 that horizontally drives the table 42 in the longitudinal direction thereof, and a subject placed on the table 42 during imaging. The top plate 42 is moved so that P becomes an optimal position.

  The sensor unit unit 10 is configured by disposing a plurality of sensor units 11 to 14 on the top plate 42 so as to be movable apart from each other so as to be orthogonal to the longitudinal direction of the top plate 42. The pressure received is detected and transmitted to the pressure sensor unit 20 via the tube 15.

  Note that the fact that the sensor unit 10 is orthogonal to the longitudinal direction of the top plate 42 includes being substantially orthogonal.

  The sensor units 11 to 14 are each composed of an encapsulation and an enclosure enclosed in the encapsulation, such as air, and the encapsulation material is made of urethane, vinyl leather or the like having excellent X-ray transmission, A material having an appropriate elasticity is used so that the internal pressure varies corresponding to the pressure variation from the specimen P.

  In addition, by enclosing air inside the sensor units 11 to 14, the surface of the sensor units 11 to 14 and the body surface of the subject P are improved, and accompanying the breathing, heartbeat, and body movement from the subject P. The pressure fluctuation can be converted into air pressure fluctuation in the sensor units 11 to 14 and transmitted to the pressure sensors 21 to 24.

  The tube 15 is hollow and has flexibility and elasticity, and is made of urethane having X-ray permeability. One end of the tube 15 is the sensor unit 11 to 14 of the sensor unit 10 and the other end is a pressure sensor. The pressure sensor 21 is connected to the pressure sensors 21 to 24 of the unit 20, respectively, and is configured to transmit the pressure of the subject P detected by the sensor unit 10 and its variation to the pressure sensor unit 20.

  The pressure sensor unit 20 includes pressure sensors 21 to 24, which correspond to the sensor units 11 to 14, respectively. For example, a pressure sensor such as a semiconductor or a low-frequency condenser microphone is used to measure minute amounts due to respiration, heartbeat, body movement, etc. of the subject P. The pressure fluctuation can be detected. The pressure detected by the pressure sensor unit 20 is converted into an electrical signal and sent to the signal processing unit 30.

  The signal processing unit 30 includes signal processing units 31 to 34 corresponding to the pressure sensors 21 to 24 of the pressure sensor unit 20, respectively. After receiving and processing a signal sent from the pressure sensor unit 20, the bed control unit 40 Send to.

  The signal processing units 31 to 34 are subjected to pressure fluctuations due to breathing, heartbeats and body movements transmitted from the body surface of the subject P, and various other vibration pressures, and these are added to the signals of breathing, heartbeats and body movements as noise. It is sent as an overlapping signal. However, since respiration and heartbeat are periodic and body motion is not periodic but is a signal with a lower frequency than respiration, the band is used to remove noise signals higher than the frequency due to respiration, heartbeat and body motion. A pass filter is provided.

  The signal removed by the bandpass filter is subjected to frequency analysis, and further subjected to noise reduction processing, separated into respiration, heartbeat, and body motion signals and sent to the bed control unit 40.

  In the bed control unit 40, the respiration rate and respiration waveform, the heart rate and heart rate waveform, the number of signals exceeding a predetermined range, the level and body movement waveform data, and the like are sent to the display unit 45.

  The display unit 45 uses a CRT, a liquid crystal, etc. to breathe as a breathing waveform in the respiratory rate or real time, heartbeat as a heart rate or heartbeat waveform in real time, and body movement as the number of signal levels and signal levels exceeding a predetermined range. Alternatively, such biological information is displayed as a body movement waveform in real time at the same time or only for specific biological information designated for each sensor unit in accordance with an instruction from the operation unit 46.

  The bed control unit 40 controls the bed driving unit 41, the signal processing unit 30, the display unit 45, and the operation unit 46.

  As described above, since the measured biological information can be monitored quantitatively in real time based on the pressure fluctuation of the sensor unit 20, it is possible to prevent imaging mistakes due to body movement of the subject P, and to easily and accurately breathe. It is possible to take an image in sync with.

  Further, since abnormal physical condition can be found from biological information such as a heartbeat failure at the time of imaging, imaging can be stopped immediately, which helps to ensure the safety of the subject P.

  FIG. 2 shows a state in which the sensor units 11 to 14 of the sensor unit section 10 shown in FIG. 1 are arranged and fixed at a predetermined position below the subject P on the top surface of the top plate 42.

  FIG. 2A shows that, for example, when the subject P is placed in the prone position (or the supine position) with the head facing the unit sensor 11 in the longitudinal direction of the top plate 42, the biological information can be detected with high sensitivity. The arrangement is shown.

  For example, when the sensor unit 11 is arranged at the position of the frontal or temporal region (or occipital region) of the subject P, biological information mainly due to body movement of the head of the subject P can be obtained with high sensitivity. .

  By arranging the sensor unit 12 at the position of the chest of the subject P (or the back corresponding to the chest), biological information mainly associated with the heartbeat of the subject P can be obtained with high sensitivity.

  By arranging the sensor unit 13 at the position of the abdomen of the subject P (or the back corresponding to the abdomen), biological information mainly associated with the respiration of the subject P can be obtained with high sensitivity.

  Then, the sensor unit 14 is arranged at the position of the back of the subject P (foot heel), so that biological information mainly due to body movement of the subject P can be obtained with high sensitivity.

  As described above, the biometric information can be obtained in a stable posture by placing the sensor unit at the main point of the subject P without placing the sensor unit on the entire surface of the top plate 42 and avoiding the waist where the body weight is most heavy. Can be obtained. In addition, as will be described later with reference to FIG. 2B, the sensor units 11 to 14 can be easily changed in arrangement, and since they are elastic bodies containing air, it is easy to maintain close contact with the measurement site. Positions such as the supine position, the prone position, or the lateral position can be arranged while maintaining the most stable posture.

  FIG. 2B shows a method of attaching the sensor units 11 to 14 to the top surface of the top plate 42, taking the sensor unit 11 as an example.

  The sensor unit 11 includes an air cell 11a placed on the top surface of the top plate 42 for detecting the pressure of the subject P, and an air cell fixture 11b for fixing the air cells 11a connected to both ends of the air cell 11a to the top plate 42. It is attached to the top plate 42 by sandwiching the top plate 42 with the air cell fixtures 11b at both ends of the air cell 11a.

  Further, the sensor unit 11 can move the top plate 42 to an appropriate place depending on the body shape of the subject P.

  If the sensor unit 11 protrudes beyond the width of the top plate 42 on both sides of the top plate 42 due to the structure of the bed, and there is no room for attaching the fixture, the sensor unit 11 can be repeatedly attached to and detached from the bottom of the air cell 11a. It is also possible to attach a pressure-sensitive adhesive sheet using a certain urethane pressure-sensitive adhesive material and install it so that it can be easily detached from the top plate 42.

  As described above, it is not necessary to attach a biological information measuring instrument directly to the subject P when performing an image diagnosis using an X-ray diagnostic apparatus, an X-ray CT apparatus, an MRI apparatus, or the like. Since the sensor unit can be arranged at an appropriate position, the posture of the subject can be kept stable and the biological information can be measured simply by placing the subject on the bed.

  The present invention is not limited to the above embodiment. For example, when body motion information at the foot of the subject P is not required, the sensor unit 14, the pressure sensor 24, and the signal processing unit of the sensor unit 10. 34 can also be removed from the top plate 42 of the bed 1 for diagnostic imaging apparatus.

  Further, the sensor unit 10 can be appropriately moved according to the height of the subject P, and the shape of the sensor unit can be changed according to the body shape.

  Furthermore, when a wider range of biological information of the body of the subject P is required, a set of sensor units, pressure sensors, and signal processing units can be additionally arranged.

  FIG. 3 shows a configuration of a bed for an image diagnostic apparatus according to Embodiment 2 of the present invention. The second embodiment shown in FIG. 3 is different from the first embodiment in FIG. 1 in that temperature control units 51 and 52 for controlling the temperatures of the sensor units 12 and 13 are additionally provided.

  Although not shown, the temperature control unit 51 includes a fan, a heating element such as a nichrome wire or a ceramic heater, a temperature sensor such as a thermistor, two hollow urethane tubes removably connected to the sensor unit 12, and a temperature control. The internal air does not leak out from the connection part of the tube which consists of a circuit etc. and was connected to the inside of the temperature control unit 51 and the sensor unit 12 so that attachment or detachment is possible.

  And based on the instruction | indication of the bed control part 40, the temperature control unit 51 circulates the air inside the temperature control unit 51 and the sensor unit 12 so that the air in the sensor unit 12 may become predetermined | prescribed temperature.

  Further, the sensor unit 13 is controlled so as to reach a predetermined temperature by the temperature control unit 52 similarly to the sensor unit 12.

  In this way, by adjusting the temperature of the measurement site using the pressure detection air in the sensor unit while measuring the biological information, the elderly P or the subject P who has a pain in the affected area when cooled is used. It can relieve pain.

  The present invention can be implemented with various modifications other than those described above. For example, a temperature control unit can be additionally provided in the sensor unit 14 for the subject P whose feet are easily cooled.

The figure which shows the structure of the bed for image diagnostic apparatuses of this invention. The figure which shows the arrangement | positioning and fixing method of the sensor unit of this invention. The figure which shows the temperature control means of the sensor unit of the bed for image diagnostic apparatuses of this invention.

Explanation of symbols

P Subject 1 Bed for diagnostic imaging apparatus 10 Sensor unit 11 Sensor unit 12 Sensor unit 13 Sensor unit 14 Sensor unit 45 Display unit 51 Temperature control unit 52 Temperature control unit

Claims (5)

A top plate on which the subject is placed;
Driving means for driving the top plate;
A sensor unit that includes a sensor unit that is movably disposed on the top plate and detects a variation in biological information pressure received from the subject;
Pressure signal processing means for processing fluctuations in biological information pressure detected by the sensor unit of the sensor unit section;
Display means for displaying biological information processed by the pressure signal processing means;
A bed for diagnostic imaging apparatus.   2. The bed for an image diagnostic apparatus according to claim 1, wherein a plurality of sensor units of the sensor unit section are arranged substantially orthogonal to the longitudinal direction of the top plate and spaced apart from each other.   The sensor unit of the sensor unit section constitutes at least one of a respiration measurement unit that measures respiration of a subject based on pressure fluctuation, a heart rate measurement unit that measures a heartbeat, and a body movement measurement unit that measures body movement. The image diagnostic apparatus bed according to claim 1, wherein the bed is for an image diagnostic apparatus.   The image according to any one of claims 1 to 3, wherein the sensor unit of the sensor unit section is configured by enclosing an enclosure inside an enveloping material excellent in X-ray transmission. A bed for diagnostic equipment. 5. The image diagnostic apparatus bed according to claim 4, wherein the sensor unit of the sensor unit section includes temperature control means for controlling the temperature of the enclosure inside the sensor unit.

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