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Mechanical positioner for magnetic resonance guided ultrasound therapy

  • US 5,443,068 A
  • Filed: 09/26/1994
  • Issued: 08/22/1995
  • Est. Priority Date: 09/26/1994
  • Status: Expired due to Term
First Claim
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1. A magnetic resonance (MR) focused heat system for positioning a focal point of an energy transducer within a subject, comprising:

  • a) an energy transducer for Concentrating energy at a focal point;

    b) a subject interface located between the energy transducer and said subject, for facilitating energy to pass from the energy transducer to said subject;

    c) a transducer plate constructed of an MR compatible material, for carrying the energy transducer;

    d) a first slide constructed of an MR compatible material, having a first threaded shaft slideably connected to the transducer plate such that the transducer plate slides relative to the first slide when the first threaded shaft is rotated;

    e) a second slide constructed of an MR compatible material, having a second threaded shaft slideably connected to the first slide such that the first slide slides relative to the second slide when the second threaded shaft is rotated;

    f) a base plate constructed of an MR compatible material, having a third threaded shaft slideably connected to the second slide such that the second slide slides relative to the base plate when the third threaded shaft is rotated;

    g) a first actuating means for causing rotation of the first threaded shaft;

    h) a second actuating means for causing rotation of the second threaded shaft; and

    i) a third actuating means for causing rotation of the third threaded shaft thereby causing the energy transducer to be positioned in three dimensions.

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