US3817249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereotaxic instrument
Assignee: Neuro Probe Inc
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Filing: 1972-04-07
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Granted: 1974-06-18
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Expires: 1992-04-07
Abstract
Abstract A chronically fixed stereotaxic device for intracerebral exploration with electrodes or other probes. A headpiece or platform is provided which features an enlarged opening providing direct access to the dura or skull of the research animal. A removable gridplate is located in covering relation to the opening and one or more swivel blocks mounting electrode drives is supported on the headpiece so that electrodes may be properly positioned with the gridplate in place whereafter the gridplate is removed and the electrode or electrodes are plunged and adjusted to the desired Horsely-Clarke coordinate positions. A swivel block and electrode drive assembly is also disclosed which allows an electrode to be plunged at an acute angle to the vertical Horsely-Clarke axis to allow an electrode angularly to reach a desired Horsely-Clarke coordinate position.
Inventors
- 👤 M Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:42
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/10; A61B90/11
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
An open access stereotaxic platform assembly comprising, in combination: a plate member having a generally centrally disposed access opening for open access to the brain of an animal with which the platform is associated; means for rigidly fixing said plate member to an animal''s skull in predetermined relation with respect to Horsely-Clarke coordinatEs; said plate member presenting reference surfaces on either side of said access opening and having a top surface between and recessed below said reference surfaces in surrounding relation to said access opening, and a plurality of vertical posts on each of said reference surfaces; a gridplate seating upon said top surface and bridging between said reference surfaces completely to close said access opening and presenting an upper indexing surface; and means for removably fixing said gridplate on said top surface to seal said access opening and with said upper surface of the gridplate being located at a known point on the Horsely-Clarke vertical coordinate.
Claim 2
Dependent Claim
157 words
An open access stereotaxic platform assembly comprising, in combination: a plate member having a generally centrally disposed access opening for open access to the brain of an animal with which the platform is associated; means for rigidly fixing said plate member to an animal''s skull in predetermined relation with respect to Horsely-Clarke coordinatEs; said plate member presenting reference surfaces on either side of said access opening and having a top surface between and recessed below said reference surfaces in surrounding relation to said access opening, and a plurality of vertical posts on each of said reference surfaces; a gridplate seating upon said top surface and bridging between said reference surfaces completely to close said access opening and presenting an upper indexing surface; and means for removably fixing said gridplate on said top surface to seal said access opening and with said upper surface of the gridplate being located at a known point on the Horsely-Clarke vertical coordinate.
Claim 3
Dependent Claim
45 words
An open access stereotaxic platform assembly as defined in claim 1 including a swivel block on one of said posts, a radial arm carried by said swivel block and overlying said access opening, and a probe drive carried by the end of said radial arm.
Claim 4
Dependent Claim
33 words
An open access stereotaxic platform assembly as defined in claim 2 wherein said radial arm is of non-circular cross section so as to position said probe drive parallel to the vertical Horsely-Clarke coordinate.
Claim 5
Dependent Claim
37 words
An open access stereotaxic platform assembly as defined in claim 2 wherein said radial arm is of circular cross section so as to position said probe drive at acute angles with respect to the vertical Horsely-Clarke coordinate.
Claim 6
Dependent Claim
72 words
An open access stereotaxic platform assembly as defined in claim 3 including a second swivel block on another of said posts, a second radial arm carried by said second swivel block, and a second probe drive carried by the end of said second radial arm, said second radial arm being of circular cross section so as to position said second probe drive at acute angles with respect to the vertical Horsely-Clarke coordinate.
References Cited (Backward Citations)
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |