US6156042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retinal tissue implantation instrument
Assignee: University of Louisville Research Foundation ULRF
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Filing: 1999-06-14
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Granted: 2000-12-05
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Expires: 2019-06-14
Abstract
Abstract The disclosure relates to an instrument for implanting retinal tissue into the subretinal space of the eye. A tubular nozzle having an open end and an aperture in a sidewall thereof for the acceptance of retinal tissue, is telescoped over a mandrel. Retraction of the nozzle relative to the mandrel biases the retinal tissue out of the open end of the nozzle to effect deposition of the retinal tissue in a target area of the eye.
Inventors
- 👤 Robert B. Aramant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:22
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00727
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
An instrument for implanting retinal tissue into the human eye comprising: an elongated mandrel; a tubular nozzle telescoped over said mandrel and having an open end for the discharge of retinal tissue and an aperture in a sidewall thereof spaced from said open end for the acceptance of retinal tissue; and a nozzle control connected to said nozzle and to said mandrel, movement of said control relative to said mandrel effecting movement of said nozzle relative to said mandrel whereby said mandrel biases the retinal tissue through the open end of said nozzle.
Claim 2
Dependent Claim
93 words
An instrument for implanting retinal tissue into the human eye comprising: an elongated mandrel; a tubular nozzle telescoped over said mandrel and having an open end for the discharge of retinal tissue and an aperture in a sidewall thereof spaced from said open end for the acceptance of retinal tissue; and a nozzle control connected to said nozzle and to said mandrel, movement of said control relative to said mandrel effecting movement of said nozzle relative to said mandrel whereby said mandrel biases the retinal tissue through the open end of said nozzle.
Claim 3
Dependent Claim
36 words
The instrument of claim 1 wherein said mandrel is supported by a handpiece and said nozzle control comprises a toggle mechanism having one end connected to said nozzle and an opposite end connected to said handpiece.
Claim 4
Dependent Claim
142 words
An instrument for implanting retinal tissue into the human eye comprising: an elongated mandrel; a tubular nozzle telescoped over said mandrel having an open end for the discharge of retinal tissue and an aperture in a sidewall thereof spaced from said open end for the acceptance of retinal tissue; and a nozzle control linkage connected to said nozzle and to said mandrel, movement of said control linkage in one direction relative to said mandrel effecting movement of said nozzle relative to said mandrel to a position wherein the aperture in said nozzle is spaced from an end portion of said mandrel for the acceptance of retinal tissue, movement of said control linkage in an opposite direction effecting retraction of said nozzle over said mandrel whereby the end portion of said mandrel biases said retinal tissue through the open end of said nozzle.
Claim 5
Dependent Claim
142 words
An instrument for implanting retinal tissue into the human eye comprising: an elongated mandrel; a tubular nozzle telescoped over said mandrel having an open end for the discharge of retinal tissue and an aperture in a sidewall thereof spaced from said open end for the acceptance of retinal tissue; and a nozzle control linkage connected to said nozzle and to said mandrel, movement of said control linkage in one direction relative to said mandrel effecting movement of said nozzle relative to said mandrel to a position wherein the aperture in said nozzle is spaced from an end portion of said mandrel for the acceptance of retinal tissue, movement of said control linkage in an opposite direction effecting retraction of said nozzle over said mandrel whereby the end portion of said mandrel biases said retinal tissue through the open end of said nozzle.
References Cited (Backward Citations)
WO1991002499A1
Cited
US5108421A
Cited
WO1994021205A1
Cited
WO1994025569A1
Cited
WO1996026759A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-05 | 2004-06-05 | 2004-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-05 | 2008-06-05 | 2008-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-05 | 2012-06-05 | 2012-12-05 | $7700.00 | Window Closed / Lapsed |