US4520814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser-resistant back-up pad
Assignee: Medical Engineering Corp
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Filing: 1982-09-28
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Granted: 1985-06-04
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Expires: 2002-09-28
Abstract
Abstract An elastomeric back-up pad having a smooth laser-resistant coating thereon is provided for insertion between tissue layers incised during surgical procedures in which a laser is used to incise the tissue. The laser-resistant coating on the pad comprises a mixture of powdered metal which tends to reflect the laser beam and an elastomer which bonds the coating to the pad and imparts a smooth exterior surface to the coating thereby reducing the risk of tissue trauma as the pad is inserted between the tissue layers.
Inventors
- 👤 Vaughan B. Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:22
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/009; A; A61; A61B; A61B90/00; A61B90/04; B23K26/18; A61B2090/049
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
A laser-resistant back-up pad for insertion between the layers of tissue incised by a laser during surgery comprising: an elastomer substrate having a first surface adapted to face the interior of the body of the patient and an opposite second surface adapted to face the exterior of the body of the patient; a smooth laser-reflective coating comprised of a mixture of an elastomer and a laser-reflective material permanently bonded to the second surface of said elastomer substrate; and a layer of liquid absorbing non-laser reflective material bonded to said coating such that said laser reflective coating is sandwiched between said elastomer substrate and said liquid absorbing layer.
Claim 2
Dependent Claim
107 words
A laser-resistant back-up pad for insertion between the layers of tissue incised by a laser during surgery comprising: an elastomer substrate having a first surface adapted to face the interior of the body of the patient and an opposite second surface adapted to face the exterior of the body of the patient; a smooth laser-reflective coating comprised of a mixture of an elastomer and a laser-reflective material permanently bonded to the second surface of said elastomer substrate; and a layer of liquid absorbing non-laser reflective material bonded to said coating such that said laser reflective coating is sandwiched between said elastomer substrate and said liquid absorbing layer.
Claim 3
Dependent Claim
16 words
A laser-resistant back-up pad of claim 1 in which the elastomer substrate is of silicone rubber.
Claim 4
Dependent Claim
19 words
A laser-resistant back-up pad of claim 1 in which the layer of liquid absorbing non-laser reflective material is gauze.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |