US5795294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure for the correlation of different coordinate systems in computer-supported, stereotactic surgery
Assignee: Carl Zeiss AG
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Filing: 1995-05-30
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Granted: 1998-08-18
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Expires: 2015-05-30
Abstract
Abstract In a procedure for correlating different coordinate systems in computer-supported, stereotactic surgery, without the use of additional referencing markers, partial topographical information is collected by means of a surgical microscope mounted on a carrier system, and this partial topographical information is spatially correlated with the diagnostic data generated prior to surgery using a suitable correlation algorithm.
Inventors
- 👤 Joachim Luber
- 👤 Arvids Mackevics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/36; A61B90/10; A61B90/20; A61B90/25; A61B34/00; A61B34/20; A61B2034/2046; A61B2034/2065; A61B2090/364; A61B34/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A method for correlation of different coordinate systems in computer-supported stereotactic surgery without use of referencing markers, comprising: moving a surgical microscope (1) mounted on a carrier system (2) over a specific surface area of an object under observation, continually measuring distances between surface points on said surface area and said surgical microscope point-by-point to generate a three-dimensional surface profile of said surface area, and spatially correlating said three-dimensional surface profile with diagnostic data generated prior to surgery via a correlation algorithm.
Claim 2
Independent Claim
82 words
A method for correlation of different coordinate systems in computer-supported stereotactic surgery without use of referencing markers, comprising: moving a surgical microscope (1) mounted on a carrier system (2) over a specific surface area of an object under observation, continually measuring distances between surface points on said surface area and said surgical microscope point-by-point to generate a three-dimensional surface profile of said surface area, and spatially correlating said three-dimensional surface profile with diagnostic data generated prior to surgery via a correlation algorithm.
Claim 3
Dependent Claim
20 words
The method according to claim 1, further comprising maneuvering said surgical microscope manually over said surface area of an object.
Claim 4
Dependent Claim
40 words
The method according to claim 1, further comprising automatically positioning said surgical microscope (1) mounted on a motorized carrier, over said surface area of an object by means of a central control unit (3) according to defined, preselected positioning parameters.
Claim 5
Independent Claim
107 words
A method for correlation of different coordinate systems in computer supported stereotactic surgery without use of referencing markers, comprising: using a surgical microscope (1) mounted on a carrier system (2), providing specific anatomic details of a field of view under observation with at least one contour (6) in diagnostic data generated prior to surgery, projecting said at least one contour (6) into observation optics of said surgical microscope (1), and positioning said surgical microscope (1) over said field of view under observation by means of said carrier system (2) so as to obtain optimum coincidence between said at least one contour (6) and a viewed object structure.
Claim 6
Independent Claim
107 words
A method for correlation of different coordinate systems in computer supported stereotactic surgery without use of referencing markers, comprising: using a surgical microscope (1) mounted on a carrier system (2), providing specific anatomic details of a field of view under observation with at least one contour (6) in diagnostic data generated prior to surgery, projecting said at least one contour (6) into observation optics of said surgical microscope (1), and positioning said surgical microscope (1) over said field of view under observation by means of said carrier system (2) so as to obtain optimum coincidence between said at least one contour (6) and a viewed object structure.
Claim 7
Dependent Claim
34 words
The method according to claim 4, further comprising manually maneuvering said surgical microscope, and performing continuous visual checks for optimum coincidence between said projected at least one contour (6) and said viewed object structure.
Claim 8
Dependent Claim
70 words
The method according to claim 4, further comprising: maneuvering said surgical microscope (1) mounted on a carrier system by means of a central control unit (3), and continuously automatically checking maintenance of optimum coincidence between said at least one contour projected into observation optics of said surgical microscope and said viewed object structure, wherein a respective field of view is continuously measured by electro-optical detectors and processed in digitized form.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |