Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
  • A61B6/04—Positioning of patients; Tiltable beds or the like

Definitions

• the present invention relates to, for example, an improvement on a staple having a cradle that moves in a state where a cable is connected to a patient staple in an NMR imaging apparatus, and more particularly to a cradle.
• the present invention relates to a table equipped with a cable pickup mechanism for appropriately treating the behavior of a capele as the boat moves forward and backwards.
• the patient table 5 is a cradle that carries the patient 4 and moves back and forth toward the magnetic field cavity created by the magnet mechanism 2.
• This cradle is equipped with a head coil for measuring the NMR signal of the patient's head, and a handset (buried in the head coil) for communicating by voice to the patient. You.
• These headcoils / handsets are connected to the fixed NMR signal measuring device / speech communication device separately from the staples via the cable.
• one end of the cable moves as the cradle advances and retreats, but the other end is connected to a fixed electrical device, so that the cable ends when the cradle advances and retreats.
• a cable tick-up mechanism is needed to properly handle the cables and prevent them from becoming too loose or entangled.
• FIGS. 4a and 4b show a conventional example of a cable pickup mechanism.
• the cable 10 connecting the head coil 1 on the cradle 3 and the fixed electric device 9 is wound around fixed pulleys 6 and 7 and a movable pulley 8 arranged along the periphery of the magnetic mechanism 2.
• the movable pulley 8 has a mechanism for pulling the caple 10 without loosening it.
• Such a cable tick-up mechanism treats the movement of the caple 10 according to the movement of the movable pulley 8 as the cradle 3 advances and retreats, so that the caple 10 does not loosen or become entangled. I'm sorry.
• An object of the present invention is to provide a table in which a small number of pulleys are used, and a built-in captive pickup mechanism with good space utilization efficiency is provided.
• the table according to the present invention is characterized in that the longitudinal direction is aligned with the moving direction of the cradle, the base is placed under the cradle, and the caple is connected to the cradle.
• a base (12) having a cable fixing portion for fixing the other end, and a pulley on which the cable is wound are supported, and are installed on the base so as to be movable in the longitudinal direction thereof.
• FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention
• FIG. 2 is a perspective view showing a cable pickup mechanism according to an embodiment of the present invention.
• FIG. 3 is a configuration diagram of an NMR imaging device provided with a head coil.
• FIGS. 4a and 4b are explanatory views of a conventional cable pickup mechanism in an NMR imaging device.
• FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention, and shows a table with a built-in captive pickup mechanism. The details of the captive wrap-up mechanism are shown in Figure 2.
• the table body 5 is provided in the space formed under the cradle 3 with pulley support means 11, base 12, pullback means 13, puller 14, and pulley 15 16 , here incorporates a cable tee quaterphenyl-up mechanism consisting of 1 7 til c, the cradle 3, the end of the Hou opposed to the magnet Bok mechanism between the front end (F), The opposite end is the rear end (R).
• the pulley support means 11 is mounted on the base 12 so as to be movable along its longitudinal direction.
• the base 12 is installed such that its length is aligned with the longitudinal direction of the cradle 3.
• the pulley support means 11 is provided with a pull-back force through a wire 14 by a pull-back means 13 attached to the rear end (R) of the base 12.
• the pull-back means 13 is configured using an inverted spiral spring or the like.
• Three pulleys 15.16, 17 are supported on the pulley support means 11, and these pulleys are wrapped with capes 18, 9, 20 respectively.
• the breakdown of the three caples 18, 19, and 20 is, for example, ⁇ 18, 18 is for supplying drive signals to the head coil, 19 is for receiving signals from the head coil, and 20 is for transmitting and receiving to and from the patient. Puru.
• an example with three cables is shown, so three pulleys are used accordingly, but if the cables are bundled into one, only one pulley is good. In other words, the pulley is good for one caple. Capele
• the ends of 18, 19, and 20 are fixed to the bent portions of the front end (F) of the base 12, respectively, and penetrate these fixed portions to be connected to the corresponding electrical devices.
• 9,> 20 are fixed near the front end of cradle 3 through the window provided at the bent part of the front end (F) of base 12, and the electric circuit of head coil 1 is passed through this fixed part. In this way, a captive tiquip mechanism is formed inside the table.
• FIG. 1 and FIG. 2 show a state in which the cradle 3 is pulled out most from the magnet mechanism. From this state, when the cradle 3 is fed into the magnetic field space in the magnet by the ⁇ cradle feed mechanism (not shown), the ends of the cables 18, 19, and 20 fixed to the front end of the cradle 3 become cradle 3 However, since the other ends of these cables are fixed to the front end of the base 12, the pulley support means ⁇ 1 is pulled through these caples, and the pulleys 15, 16 Rotate, 17 and move forward on the base 12. The travel distance of the pulley support means 11 is ⁇ / 2 of the travel distance of the cradle 3.
• the pull-back force applied by the pull-back means 13 to the pulley support means 11 is selected so as not to prevent the cradle 3 from moving forward.
• the caples 18, 19, and 20 are fed by a length equal to the maximum feed amount of the cradle 3, while the pulley support means 11 receives the maximum feed amount of the cradle 3.
• Sent only 1 2 distance To reach the base 12 near the front end. Therefore, the lengths of the caples 18, 9. and 20 may be such that the maximum feed amount of the cradle 3 has some allowance, and the length of the base 12 that provides a path for the pulley support means 11 is provided. Is shorter than the maximum feed of cradle 3 and is good.
• this cable tick-up mechanism is configured with efficient use of space.
• the cables 18, 19, and 20 are slackened as the cradle 3 is retracted. Since the retraction force by means 13 is working: no loosening of the caples 18, 19, 20 occurs. In this way, the retreat of cradle 3 can be done without tangling the cables 18, 19 and 20.
• the best mode for carrying out the present invention has been described. However, for those having ordinary knowledge in the technical field to which the present invention pertains, various modifications may be made without departing from the scope of the following claims. Modification is possible. -

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• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Citations (5)

• 1986
  • 1986-05-15 JP JP61110998A patent/JPS62268543A/ja active Granted
• 1987
  • 1987-05-14 WO PCT/JP1987/000302 patent/WO1987006814A1/ja unknown

Patent Citations (5)

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