US5649936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereotactic guide apparatus for use with neurosurgical headframe
Assignee: Individual
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Filing: 1995-09-19
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Granted: 1997-07-22
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Expires: 2015-09-19
Abstract
Abstract A stereotactic guide apparatus is disclosed for positioning a surgical instrument along three axes. The disclosed stereotactic guide apparatus is adapted for use in neurosurgical procedures in conjunction with a conventional headframe mounted to a patient's skull and having an arc extending above and across the skull. A platform is mounted to the arc of the headframe. An X-slide is mounted to the platform for movement along the X-axis. A Y-slide is mounted to the X-slide for movement along the Y-axis. A Z-stage is mounted to the Y-slide. By moving the X-slide and Y-slide, the Z-stage is thus positionable along both the X- and Y-axes. The Z-stage includes an instrument slide mounted for movement along the Z-axis. A surgical instrument such as an electrode, injection cannula, or biopsy needle can be mounted to the instrument slide for movement of the instrument along the Z-axis.
Inventors
- 👤 Douglas D. Real
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:25
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/10; A61B90/11
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
205 words
A stereotactic guide apparatus for use with a neurosurgical headframe, comprising: an arc extending above and across the skull of a patient to whom the headframe is mounted; slide mounted for sliding movement along said arc; a platform defining a plane, said platform having an X-axis extending in a first direction within said plane, a Y-axis extending in a second direction within said plane perpendicular to and intersecting said X-axis, and a Z-axis projecting normal to said plane and through the intersection of said X-axis and said Y-axis, said platform being mounted to said slide for sliding movement along said arc; X-slide means movably supported on said platform for movement along said X-axis; Y-slide means movably supported on said X-slide means for movement along said Y-axis; and a tubular instrument guide mounted to said Y-slide means and extending parallel to said Z-axis, said tubular instrument guide being configured to receive a surgical instrument for movement therethrough to guide said surgical instrument along a direction parallel to said Z-axis, whereby a surgical instrument can be advanced through said tubular instrument guide, and whereby said X-slide means and said Y-slide means can be moved to position said surgical instrument with respect to said X-axis and said Y-axis.
Claim 2
Dependent Claim
205 words
A stereotactic guide apparatus for use with a neurosurgical headframe, comprising: an arc extending above and across the skull of a patient to whom the headframe is mounted; slide mounted for sliding movement along said arc; a platform defining a plane, said platform having an X-axis extending in a first direction within said plane, a Y-axis extending in a second direction within said plane perpendicular to and intersecting said X-axis, and a Z-axis projecting normal to said plane and through the intersection of said X-axis and said Y-axis, said platform being mounted to said slide for sliding movement along said arc; X-slide means movably supported on said platform for movement along said X-axis; Y-slide means movably supported on said X-slide means for movement along said Y-axis; and a tubular instrument guide mounted to said Y-slide means and extending parallel to said Z-axis, said tubular instrument guide being configured to receive a surgical instrument for movement therethrough to guide said surgical instrument along a direction parallel to said Z-axis, whereby a surgical instrument can be advanced through said tubular instrument guide, and whereby said X-slide means and said Y-slide means can be moved to position said surgical instrument with respect to said X-axis and said Y-axis.
Claim 3
Dependent Claim
122 words
The stereotactic guide apparatus of claim 1, further comprising a Z-stage means, said Z-stage means comprising: a Z-stage base mounted to said Y-slide means; Z-axis support means mounted to said Z-stage base and extending parallel to said Z-axis; an instrument slide means movably mounted to said Z-axis support means and movable parallel to said Z-axis; and an instrument attachment means operatively associated with said instrument slide means for attaching a surgical instrument to said instrument slide means; said instrument attachment means and said instrument slide means being arranged such that when a surgical instrument is attached to said instrument slide means and said instrument slide means is moved parallel to said Z-axis, said surgical instrument is advanced through said tubular instrument guide.
Claim 4
Dependent Claim
48 words
The stereotactic guide apparatus of claim 2, wherein said Z-stage further comprises: drive support means fixedly mounted on said Z-axis support means; and drive means operatively associated with said drive support means and said instrument slide means for moving said instrument slide means along said Z-axis support means.
Claim 5
Dependent Claim
56 words
The stereotactic guide apparatus of claim 2, wherein said Z-stage further comprises: a carrier tube support means fixedly mounted on said Z-axis support means; and a carrier tube means mounted to said carrier tube support means coaxial with said tubular instrument guide for providing structural support to a surgical instrument attached to said instrument slide means.
Claim 6
Dependent Claim
36 words
The stereotactic guide apparatus of claim 2, further comprising Z-axis displacement detection means operatively associated with said Z-axis support means and said instrument slide means for detecting displacement of said instrument slide means along said Z-axis.
Claim 7
Dependent Claim
52 words
The stereotactic guide apparatus of claim 5, wherein said Z-axis displacement detection means comprises: linear scale means mounted to said Z-axis support means; and a reference mark on said instrument slide means in cooperative relation with said linear scale means for indicating the displacement of said instrument slide means along said Z-axis.
Claim 8
Dependent Claim
73 words
The stereotactic guide apparatus of claim 5, wherein said Z-axis displacement detection means comprises a linear potentiometer having a housing and a push rod, said housing being operatively associated with one of said Z-axis support means and said instrument slide means, and said push rod being operatively associated with the other of said Z-axis support means and said instrument slide means for electronically detecting displacement of said instrument slide means along said Z-axis.
Claim 9
Dependent Claim
32 words
The stereotactic guide apparatus of claim 1, further comprising: X-axis displacement detection means operatively associated with said platform and said X-slide means for detecting displacement of said X-slide means along said X-axis.
Claim 10
Dependent Claim
48 words
The stereotactic guide apparatus of claim 8, wherein said X-axis displacement detection means comprises: linear scale means mounted to said platform; and a reference mark on said X-slide means in cooperative relation with said linear scale means for indicating the displacement of said X-slide means along said X-axis.
Claim 11
Dependent Claim
66 words
The stereotactic guide apparatus of claim 8, wherein said X-axis displacement detection means comprises a linear potentiometer having a housing and a push rod, said housing being operatively associated with one of said platform and said X-slide means, and said push rod being operatively associated with the other of said platform and said X-slide means for electronically detecting displacement of said X-slide means along said X-axis.
Claim 12
Dependent Claim
37 words
The stereotactic guide apparatus of claim 1, further comprising Y-axis displacement detection means mounted in fixed relation to said Y-axis and operatively associated with said Y-slide means for detecting displacement of said Y-slide means along said Y-axis.
Claim 13
Dependent Claim
49 words
The stereotactic guide apparatus of claim 11, wherein said Y-axis displacement detection means comprises: linear scale means mounted to said X-slide means; and a reference mark on said Y-slide means in cooperative relation with said linear scale means for indicating the displacement of said Y-slide means along said Y-axis.
Claim 14
Dependent Claim
66 words
The stereotactic guide apparatus of claim 11, wherein said Y-axis displacement detection means comprises a linear potentiometer having a housing and a push rod, said housing being operatively associated with one of said platform and said Y-slide means, and said push rod being operatively associated with the other of said platform and said Y-slide means for electronically detecting displacement of said Y-slide means along said Y-axis.
Claim 15
Dependent Claim
28 words
The stereotactic guide apparatus of claim 1, further comprising drive means operatively associated with said platform and said X-slide means for displacing said X-slide means along said X-axis.
Claim 16
Dependent Claim
29 words
The stereotactic guide apparatus of claim 1, further comprising drive means operatively associated with said X-slide means and said Y-slide means for displacing said Y-slide means along said Y-axis.
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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) | 2000-07-21 | 2001-01-20 | 2001-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-21 | 2005-01-20 | 2005-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-21 | 2009-01-20 | 2009-07-22 | $7700.00 | Window Closed / Lapsed |