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Stereotactic device

  • US 5,575,798 A
  • Filed: 08/22/1995
  • Issued: 11/19/1996
  • Est. Priority Date: 11/17/1989
  • Status: Expired due to Term
First Claim
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1. A stereotactic device for accurate placement of a medical instrument in a body, comprising:

  • at least one vertical stanchion;

    a support member attached to said stanchion, said support member being vertically movable along a portion of said stanchion;

    a straight, horizontal bridge member attached to said support member perpendicular to said stanchion, said bridge member defining a longitudinal axis which passes through said support member;

    a locking device for selectively securing said support member at a desired location along said stanchion; and

    a guidance device mounted on said bridge member, said guidance device being selectively movable relative to said stanchion along the longitudinal axis of said bridge member, said guidance device further being selectively rotatable about an axis of rotation parallel to said longitudinal axis;

    wherein said guidance device comprises a carrier adapted to carry the medical instrument for insertion in the body, said carrier being selectively movable along an arc defined by said guidance device to define a range of sagittal angles, said arc having a curvature such that the focus of said arc lies on said axis of rotation of said guidance device.

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