Coil assembly and control method thereof
View Patent ↗The present disclosure may provide a coil assmebly configured to transmit or receive a magnetic resonance (MR) signal. The coil assembly may include a coil, a support component, and a lock mechanism. The coil may include a first portion and a second portion detachably connected to the first portion. The support component may be configured to support the coil. The second portion of the coil may be movable with respect to the support component. The lock mechanism may be configured to lock or unlock the second portion of the coil and the support component.
1. A coil assembly, comprising:
a support component;
a coil comprising a first portion and a second portion, the first portion of the coil being configured to cover the second portion of the coil, and the second portion of the coil being located on and moveable with respect to the support component; and
a lock mechanism located on the second portion of the coil, the lock mechanism being configured to lock or unlock the second portion of the coil and the support component,
the lock mechanism being controlled by locking or unlocking the first portion and the second portion of the coil.
2. A coil assembly configured to transmit or receive a magnetic resonance (MR) signal, comprising:
a coil including a first portion and a second portion detachably connected to the first portion;
a support component configured to support the coil, the second portion of the coil being movable with respect to the support component; and
a lock mechanism configured to lock or unlock the second portion of the coil and the support component, wherein
the second portion of the coil is locked, via the lock mechanism, with the support component when the first portion and the second portion of the coil are in a locked state; and
the second portion of the coil is unlocked, via the lock mechanism, from the support component when the first portion and the second portion of the coil are in an unlocked state.
3. The coil assembly of claim 2 , wherein
the lock mechanism is located on the second portion of the coil; or
the lock mechanism is partially located on the first portion and partially on the second portion of the coil.
4. The coil assembly of claim 2 , wherein
a locking of the first portion and the second portion of the coil causes a portion of the lock mechanism to move to abut the support component such that the second portion of the coil and the support component are locked; and
an unlocking of the first portion and the second portion of the coil causes the portion of the lock mechanism to move away from the support component such that the second portion of the coil and the support component are unlocked.
5. The coil assembly of claim 4 , wherein
a first surface of the first portion of the coil abuts a second surface of the second portion of the coil when the first portion and the second portion of the coil are locked; and
a portion of the lock mechanism protrudes beyond the second surface of the second portion of the coil such that the portion of the lock mechanism moves relative to the second portion of the coil in response to the locking of the first portion and the second portion of the coil.
6. The coil assembly of claim 2 , the lock mechanism comprising at least one of a pressing component, a transmission component, or a lock component, wherein
the pressing component is connected to the lock component via the transmission component;
the pressing component is configured to move with respect to the second portion of the coil in response to a locking or an unlocking of the first portion and the second portion of the coil; and
the lock component is configured to move to lock or unlock, via the transmission component, the second portion of the coil and the support component in response to the movement of the pressing component.
7. The coil assembly of claim 6 , wherein
a first surface of the first portion of the coil abuts a second surface of the second portion of the coil when the first portion and the second portion of the coil are locked; and
at least a portion of the pressing component protrudes beyond the second surface of the second portion of the coil such that the pressing component moves relative to the second portion of the coil in response to the locking of the first portion and the second portion of the coil.
8. The coil assembly of claim 7 , wherein the pressing component is located on the second portion of the coil symmetrically with respect to the second surface of the second portion of the coil.
9. The coil assembly of claim 7 , wherein the transmission component is located on the second portion of the coil symmetrically with respect to a third surface of the second portion of the coil different from the second portion of the coil.
10. The coil assembly of claim 6 , the transmission component comprising at least one pully and a string wrapped around the at least one pully, wherein
a first end of the string is connected to the pressing component;
a second end of the string is connected to the lock component; and
the lock component is configured to move with the pressing component via the string and the at least one pully.
11. The coil assembly of claim 6 , the transmission component comprising a first rotation component, a second rotation component, and a rod connecting the first rotation component and the second rotation component, wherein
a first end of the rod is connected to the pressing component via the first rotation component;
a second end of the rod is connected to the lock component via the second rotation component; and
the lock component is configured to move with the pressing component via the rod, the first rotation component, and the second rotation component.
12. The coil assembly of claim 6 , the transmission component comprising a first rack, a second rack, and a gear meshing with the first rack and the second rack, wherein
the first rack is connected to the pressing component and the gear;
the second rack is connected to the lock component and the gear; and
the lock component is configured to move with the pressing component via the gear, the first rack, and the second rack.
13. The coil assembly of claim 6 , the lock component comprising a lock pin, an elastic unit, and a positioning unit, wherein
the lock pin is connected to the transmission component and is connected, via the elastic unit, to the positioning unit;
in response to the locking of the first portion and the second portion of the coil, the lock pin is configured to move to abut the support component to lock the second portion of the coil and the support component;
in response to the unlocking of the first portion and the second portion of the coil, the lock pin is configured to move away from the support component to unlock the second portion of the coil and the support component; and
the positioning unit is configured to limit a movement of the elastic unit.
14. The coil assembly of claim 6 , the lock mechanism comprising a reset component located on the second portion of the coil and configured to reset a position of the pressing component, wherein the reset component includes
a positioning unit configured to support the pressing component; and
an elastic unit configured to retractably move with respect to the positioning unit, wherein
in response to the locking of the first portion and the second portion of the coil, the pressing component compresses the elastic unit such that the pressing component moves along a first direction to cause the locking of the second portion of the coil and the support component; and
in response to the unlocking of the first portion and the second portion of the coil, the pressing component moves along a second direction that is opposite to the first direction to cause the unlocking of the second portion of the coil and the support component.
15. The coil assembly of claim 2 , further comprising a guiding mechanism configured to guide the second portion of the coil to move along a predetermined direction with respect to the support component, wherein the guiding mechanism includes
a slot located on the support component; and
a guiding component, wherein
a first end of the guiding component is fixed on the second portion of the coil;
a second end of the guiding component extends into the slot; and
the guiding component moves along the slot.
16. The coil assembly of claim 6 , further comprising an optical trigger, wherein
the optical trigger is configured to cause the lock mechanism to lock the second portion of the coil and the support component in response to the locking of the first portion and the second portion of the coil; and
the optical trigger is configured to cause the lock mechanism to unlock the second portion of the coil and the support component in response to the unlocking of the first portion and the second portion of the coil.
17. The coil assembly of claim 16 , the optical trigger comprising a switch, a first connector, and a second connector, wherein
the first connector is located on the first portion of the coil;
the second connector is located on the second portion of the coil;
the switch is connected to the second connector; and
in response to the locking of the first portion and the second portion of the coil, the first connector and the second connector are electrically connected such that the switch causes the lock mechanism to lock the second portion of the coil and the support component.
18. The coil assembly of claim 6 , further comprising an electrical trigger, wherein
the electrical trigger is configured to cause the lock mechanism to lock the second portion of the coil and the support component in response to the locking of the first portion and the second portion of the coil; or
the electrical trigger is configured to cause the lock mechanism to unlock the second portion of the coil and the support component in response to the unlocking of the first portion and the second portion of the coil.
19. A magnetic resonance imaging system, comprising:
an imaging device having a magnetic hole;
a table; and
a coil assembly comprising:
a support component;
a coil comprising a first portion and a second portion, the first portion of the coil being detachably connected to the second portion of the coil and the second portion of the coil being located on and movable with respect to the support component; and
a lock mechanism comprising a pressing component and a lock component, wherein
the pressing component extends beyond the second portion of the coil;
the pressing component is connected to the lock component;
the first portion of the coil abuts the pressing component when the first portion and the second portion of the coil are locked; and
the pressing component is moveable with respect to the second portion of the coil to cause at least a portion of the lock component to extend out of the second portion of the coil and abut the support component; or
the lock mechanism includes a switch, the switch being controlled, via a sensor trigger or an electrical trigger, to lock the second portion of the coil and the support component after the first portion and the second portion of the coil are locked.