US5406938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glare elimination device
Assignee: Ethicon Inc
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Filing: 1992-08-24
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Granted: 1995-04-18
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Expires: 2012-08-24
Abstract
Abstract Apparatus for reducing the glare and enhancing imaging during an endoscopic procedure. The apparatus has a first portion which linerally polarizes illumination in a first direction and a second portion which analyzes the reflected illumination in a direction at 90 degrees to the first direction.
Inventors
- 👤 Steven H. Mersch
- 👤 Julia C. Putnam
- 👤 Jack B. Stubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00096; A61B1/00142; A61B1/00163; A61B1/00186; A61B1/06; A61B1/0646; A61B1/07
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
202 words
A method for reducing glare, enhancing visualization or improving diagnostic capability in an endoscopic procedure comprising: providing an endoscope comprising an illumination means and a visualization means, said endoscope having a distal end for illuminating a surgical site with said illumination means and for receiving reflected illumination from the surgical site with said visualization means; providing a sterile medical device adapted to fit over the distal end of the endoscope, said sterile medical device having a distal end including a first polarizing filter which linearly polarizes illumination in a first direction and a second polarizing filter independent of said first polarizing filter which polarizes light in a second direction; placing the sterile medical device over the distal end of the endoscope so that the distal end of the sterile medical device is adjacent the distal end of the endoscope; accessing a surgical site by locating the distal end of the endoscope in a body at the surgical site; which procedure includes both illumination with said illumination means and visualization with said visualization means, and polarizing the illumination with said first polarizing filter in a first linear direction and through said second polarizing filter, analyzing the reflected illumination in a second linear direction.
Claim 2
Independent Claim
202 words
A method for reducing glare, enhancing visualization or improving diagnostic capability in an endoscopic procedure comprising: providing an endoscope comprising an illumination means and a visualization means, said endoscope having a distal end for illuminating a surgical site with said illumination means and for receiving reflected illumination from the surgical site with said visualization means; providing a sterile medical device adapted to fit over the distal end of the endoscope, said sterile medical device having a distal end including a first polarizing filter which linearly polarizes illumination in a first direction and a second polarizing filter independent of said first polarizing filter which polarizes light in a second direction; placing the sterile medical device over the distal end of the endoscope so that the distal end of the sterile medical device is adjacent the distal end of the endoscope; accessing a surgical site by locating the distal end of the endoscope in a body at the surgical site; which procedure includes both illumination with said illumination means and visualization with said visualization means, and polarizing the illumination with said first polarizing filter in a first linear direction and through said second polarizing filter, analyzing the reflected illumination in a second linear direction.
Claim 3
Dependent Claim
25 words
A method according to claim 1 wherein the reflected illumination is polarized in a second linear direction at 90 degrees to said first linear direction.
Claim 4
Dependent Claim
97 words
A sterile medical device for use with an endoscope to selectively reduce glare in an endoscopic procedure, said device comprising a hollow tube, one end of said tube being open and the inner diameter of said tube being sized to fit over the illumination end of an endoscope, the opposite end of said tube being a polarizing assembly, said assembly having a first portion which linearly polarizes illumination in a first direction and a second portion which acts independently from said first portion as an analyzer in a second direction at 90 degrees to said first direction.
Claim 5
Dependent Claim
97 words
A sterile medical device for use with an endoscope to selectively reduce glare in an endoscopic procedure, said device comprising a hollow tube, one end of said tube being open and the inner diameter of said tube being sized to fit over the illumination end of an endoscope, the opposite end of said tube being a polarizing assembly, said assembly having a first portion which linearly polarizes illumination in a first direction and a second portion which acts independently from said first portion as an analyzer in a second direction at 90 degrees to said first direction.
Claim 6
Dependent Claim
33 words
A sterile medical device according to claim 3 wherein the polarizing assembly is pivotally mounted on the end of the tube whereby the assembly may be moved out of the path of illumination.
Claim 7
Dependent Claim
44 words
A sterile medical device according to claim 3 wherein the first portion of the polarizing assembly is a circular area which polarizes illumination in said first direction and the second portion is a juxtaposed circular area which analyzes reflected illumination in said second direction.
Claim 8
Dependent Claim
61 words
A sterile medical device according to claim 3 wherein the end of the hollow tube opposite the open end is closed by a polarizing assembly, said assembly having an outer annular polarizing area for linearly polarizing illumination in a first direction and an inner circular central area which analyzes reflected illumination in a direction at 90 degrees to said first direction.
Claim 9
Dependent Claim
14 words
A sterile medical device according to claim 6 wherein the hollow tube is rigid.
Claim 10
Dependent Claim
82 words
A sterile medical device for use with an endoscope in an endoscopic procedure, said endoscope having illuminating means and visualization means, said device comprising means for polarizing the illumination in a first polarization state and analyzing means for polarizing state different than said first polarization state, wherein said analyzing means is independent of said means for polarizing the illumination, and wherein said means for polarizing and said analyzing means are arranged to selectively reduce glare and enhance visualization during the endoscopic procedure.
Claim 11
Dependent Claim
82 words
A sterile medical device for use with an endoscope in an endoscopic procedure, said endoscope having illuminating means and visualization means, said device comprising means for polarizing the illumination in a first polarization state and analyzing means for polarizing state different than said first polarization state, wherein said analyzing means is independent of said means for polarizing the illumination, and wherein said means for polarizing and said analyzing means are arranged to selectively reduce glare and enhance visualization during the endoscopic procedure.
Claim 12
Dependent Claim
18 words
A device according to claim 8 wherein the means for polarizing the illumination is a linear polarization means.
Claim 13
Dependent Claim
15 words
A device according to claim 8 wherein the analyzing means is a linear polarization means.
Claim 14
Dependent Claim
44 words
A device according to claim 8 wherein the means for polarizing the illumination is a linear polarization means that polarizes light in a first direction and the analyzing means is a linear polarization means that polarizes light at 90 degrees to said first direction.
References Cited (Backward Citations)
US3567309A
Cited
US4808978A
Cited
US4759615A
Cited
US4878485A
Cited
JPH03206412A
Cited
US5193525A
Cited
JPH04246612A
Cited
US5260827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-17 | 1998-10-17 | 1999-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-17 | 2002-10-17 | 2003-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-17 | 2006-10-17 | 2007-04-18 | $7700.00 | Window Closed / Lapsed |