Laser guided alignment apparatus for medical procedures

• US 5,598,269 A
• Filed: 05/12/1994
• Issued: 01/28/1997
• Est. Priority Date: 05/12/1994
• Status: Expired due to Fees

• Current Assignee: Children's Hospital & Medical Center
• Original Assignee: Children's Hospital & Medical Center
• Inventors: Brown, Alan, Miller, Michael T., Johnson, Neil D., Kitaevich, Yuli
• Primary Examiner(s): Lateef, Marvin M.
• Assistant Examiner(s): Casler, Brian L.
• Application Number:
  US08/241,969
• Time in Patent Office: 992 Days
• Field of Search: 128/653.1, 606/130, 378/37, 378/204-206, 356/399, 250/491.1
• US Class Current: 356/399
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2018/2025 with a pilot laser
• CPC Class Codes: A61B 6/08 Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation
• CPC Class Codes: A61B 90/13 guided by light, e.g. laser pointers

Abstract

A portable laser guided alignment apparatus includes a laser line beam source and a laser fan beam source, with the line beam being in the same plane as the fan beam. The apparatus further includes mechanisms for adjusting the angle of the fan beam relative to a vertical reference plane and for adjusting the angle of the line beam within the plane of the fan beam. Additionally, measurement devices are included to measure the angle of the fan beam relative to the vertical reference plane, and to measure the angle of the line beam relative to a vertical reference line within the fan beam plane. The apparatus provides precise alignment for biopsy tools and other instruments used in standard biopsies, discolysis, stereotaxis, and other medical procedures wherein highly accurate positioning and insertion of instruments into a patient are required.

Claims

1. A laser guided alignment apparatus for medical procedures, comprising:

a first laser light source for producing a laser line beam;

a second laser light source for producing a laser fan beam, said laser line beam being in a same plane as said laser fan beam; and

a frame for supporting said first and second laser light sources;

means for adjusting an angle of said laser fan beam relative to a vertical reference plane; and

means for measuring the angle of said laser fan beam relative to said vertical reference plane.

2. Alignment apparatus according to claim 1 further comprising:

means for adjusting a angle of said laser line beam within said laser fan beam plane.

3. Alignment apparatus according to claim 2 further comprising:

means for measuring the angle of said laser line beam relative to a vertical reference line within said laser fan beam plane.

4. Alignment apparatus according to claim 1, said frame including:

a base;

an upright post supported by said base; and

a cantilever arm extending outwardly and angularly upwardly from said post.

5. Alignment apparatus according to claim 4 further comprising:

a housing in which said first and second laser light sources are disposed, said housing being slidable along said cantilever arm.

6. A laser guided alignment apparatus for medical procedures, comprising:

a first laser light source for producing a laser line beam;

a second laser light source for producing a laser fan beam, said laser line beam being in a same plane as said laser fan beam;

a frame for supporting said first and second laser light sources, said frame including;

a base,

an upright post supported by said base, and

a cantilever arm extending outwardly and angularly upwardly from said post;

means for adjusting an angle of said laser fan beam relative to a vertical reference plane;

means for measuring the angle of said laser fan beam relative to said vertical reference plane;

means for adjusting an angle of said laser line beam within said laser fan beam plane; and

means for measuring the angle of said laser line beam relative to a vertical reference line within said laser fan beam plane.

7. Alignment apparatus according to claim 6 further comprising:

a housing in which said first and second laser light sources are disposed, said housing being slidable along said cantilever arm.