Patent US5314439A successfully refreshed from Google Patents.
US5314439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Host cornea marking device
Assignee: Menicon Co Ltd
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Filing: 1992-10-29
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Granted: 1994-05-24
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Expires: 2012-10-29
Abstract
Abstract A host cornea marking device for providing marks on a recipient cornea bed of a corneal transplant patient is disclosed. The present marking device includes: an outer tube having a plurality of marking blades at one of opposite axial ends thereof which is adapted to face the recipient cornea bed, the marking blades being spaced apart from each other in a circumferential direction of said outer tube; and an inner tube which is received in the outer tube, such that the inner tube is axially slidable relative to the outer tube. The inner tube includes a contact portion at one of opposite axial ends thereof which is adapted to be in contact with the cornea bed so as to position the marking device with respect to a cutout section in the recipient cornea bed for receiving a donor cornea. A spring between the inner and outer tubes may be used to hold the inner tube in a first position.
Inventors
- 👤 Juntaro Sugita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:09
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/013; A61F9/0136; A61B; A61B90/00; A61B90/39; A61B2090/3937
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
215 words
A host cornea marking device for providing marks on a recipient cornea bed of a corneal transplant patient, said cornea bed having a cutout section, said host cornea marking device comprising: an outer tube having a plurality of marking blades at one of opposite axial ends thereof which is adapted to face the recipient cornea bed, said marking blades being spaced apart from each other in a circumferential direction of said outer tube; an inner tube which is received in said outer tube, such that said inner tube is axially slidable relative to the outer tube during a marking operation between a first position in which the inner tube protrudes a predetermined distance from said one of opposite axial ends of the outer tube and axially past the marking blades, and a second position in which the inner tube is entirely positioned within the outer tube; and positioning means for positioning the marking device with respect to the cutout section in the recipient cornea bed for receiving a donor cornea, said positioning means comprising a contact portion of one of opposite axial ends of the inner tube, said contact portion being adapted to fit within the cutout section and adapted to be in contact with the cornea bed so as to position the marking device.
Claim 2
Dependent Claim
215 words
A host cornea marking device for providing marks on a recipient cornea bed of a corneal transplant patient, said cornea bed having a cutout section, said host cornea marking device comprising: an outer tube having a plurality of marking blades at one of opposite axial ends thereof which is adapted to face the recipient cornea bed, said marking blades being spaced apart from each other in a circumferential direction of said outer tube; an inner tube which is received in said outer tube, such that said inner tube is axially slidable relative to the outer tube during a marking operation between a first position in which the inner tube protrudes a predetermined distance from said one of opposite axial ends of the outer tube and axially past the marking blades, and a second position in which the inner tube is entirely positioned within the outer tube; and positioning means for positioning the marking device with respect to the cutout section in the recipient cornea bed for receiving a donor cornea, said positioning means comprising a contact portion of one of opposite axial ends of the inner tube, said contact portion being adapted to fit within the cutout section and adapted to be in contact with the cornea bed so as to position the marking device.
Claim 3
Dependent Claim
37 words
A host cornea marking device according to claim 1, further comprising biasing means, disposed between said outer tube and said inner tube, for normally holding said inner tube in said first position under a biasing force thereof.
Claim 4
Dependent Claim
48 words
A host cornea marking device according to claim 1, wherein said contact portion of said inner tube is tapered such that a diameter of the contact portion decreases toward said one of opposite axial ends of the inner tube which is adopted to contact the recipient cornea bed.
Claim 5
Dependent Claim
21 words
A host cornea marking device according to claim 1, wherein said marking blades extend in radial directions of said outer tube.
Claim 6
Dependent Claim
28 words
A host cornea marking device according to claim 1, wherein said marking blades are equally spaced apart from each other in the circumferential direction of said outer tube.
Claim 7
Dependent Claim
18 words
A host cornea marking device according to claim 1, wherein said marking blades are made of stainless steel.
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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) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |