EP0247797A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Laser shield
Assignee: 3M Co
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Filing: 1987-05-21
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Granted: —
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Expires: 2007-05-21
Abstract
Abstract A laser shield is constructed from a non-linting fabric sheet and a metal layer. The shield can be used as a laser-resistant surgical drape during laser surgery to protect the patient from aberrant laser strikes. The laser shield resists penetration by commonly-used surgical lasers, is non-reflective and flame resistant, and provides ready detection of any laser beam which strikes it.
Inventors
- 👤 Robert H. C/O Minnesota Mining And Brink
- 👤 James H. Collins C/O Minnesota Mining Harper
- 👤 Steven T. C/O Minnesota Mining And Link
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 21:37
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/14; A; A61; A61B; A61B46/00; A61B90/00; A61B90/04; A61L; A61L31/00; A61L31/08; A61L31/082; B32B5/00; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/12; A61B46/20; A61B2046/205; A61B2090/049; B32B2535/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A laser shield (10) for use in the field of operation during laser surgery comprising an opaque, flexible fabric sheet (12) having one major surface juxtaposed with a metal layer (14), characterized in that said fabric sheet (12) has 40 or less pieces of lint/cm²; said metal layer (14) has a thickness sufficient to resist penetration by a CO₂ laser beam, 2.0 mm in diameter, using 5 watts of power for at least 0.2 second; and said fabric sheet (12) and said metal layer (14) are of thicknesses sufficient to provide said laser shield with a rigidity of less than 60,000 kg·mm.
Claim 2
Dependent Claim
102 words
A laser shield (10) for use in the field of operation during laser surgery comprising an opaque, flexible fabric sheet (12) having one major surface juxtaposed with a metal layer (14), characterized in that said fabric sheet (12) has 40 or less pieces of lint/cm²; said metal layer (14) has a thickness sufficient to resist penetration by a CO₂ laser beam, 2.0 mm in diameter, using 5 watts of power for at least 0.2 second; and said fabric sheet (12) and said metal layer (14) are of thicknesses sufficient to provide said laser shield with a rigidity of less than 60,000 kg·mm.
Claim 3
Dependent Claim
36 words
The laser shield (10) of Claim 1 further characterized by the feature that said fabric sheet (12) comprises nonwoven materials selected from the group consisting of wood pulp, thermoplastic polymeric fibers, cellulosic fibers and combinations thereof.
Claim 4
Dependent Claim
25 words
The laser shield (10) of Claim 1 further characterized by the feature that said fabric sheet (12) comprises woven or knit muslin, silk or cotton.
Claim 5
Dependent Claim
52 words
The laser shield (10) of Claim 1 further characterized by the feature that said metal layer (14) comprises metals selected from the group consisting of aluminum, cerium, cobalt, copper, gold, indium, iron, lead, molybdenum, neodymium, nickel, palladium, platinum, praseodymium, rhenium, rhodium, samarium, silver, tantalum, tin, titanium, tungsten, vanadium, zinc, and alloys thereof.
Claim 6
Dependent Claim
37 words
The laser shield (10) of Claim 1 further characterized by the feature that said fabric sheet (12) is held in juxtaposition with said metal layer (14) by use of adhesive means, mechanical fastening means or heat lamination.
Claim 7
Dependent Claim
93 words
A laser-resistant surgical drape (10) comprising an opaque, flexible, fabric sheet (12) having one major surface juxtaposed with a metal layer (14), characterized in that said fabric sheet (12) has 40 or less pieces of lint/cm²; said metal layer (14) has a thickness sufficient to resist penetration by a CO₂ laser beam, 2.0 mm in diameter, using 5 watts of power for at least 0.2 second; and said fabric sheet (12) and said metal layer (14) have thicknesses sufficient to provide said surgical drape (10) with a rigidity of less than 60,000 kg·mm.
Claim 8
Dependent Claim
93 words
A laser-resistant surgical drape (10) comprising an opaque, flexible, fabric sheet (12) having one major surface juxtaposed with a metal layer (14), characterized in that said fabric sheet (12) has 40 or less pieces of lint/cm²; said metal layer (14) has a thickness sufficient to resist penetration by a CO₂ laser beam, 2.0 mm in diameter, using 5 watts of power for at least 0.2 second; and said fabric sheet (12) and said metal layer (14) have thicknesses sufficient to provide said surgical drape (10) with a rigidity of less than 60,000 kg·mm.
Claim 9
Dependent Claim
36 words
The laser-resistant surgical drape (10) of Claim 6 further characterized by the feature that said fabric sheet comprises a thermoplastic polymeric fiber selected from the group consisting of polypropylene, polyester, polyethylene, polyolefin, polyamide and nylon fibers.
Claim 10
Dependent Claim
88 words
The laser-resistant surgical drape (10) of Claim 6 further characterized by the feature that said drape further comprises a second fabric sheet (20) having a major surface juxtaposed with said metal layer (14) such that said metal layer (14) is sandwiched between said fabric sheets (12, 20), and first and second adhesive layers (16, 18) disposed between said fabric sheets (12, 20) and said metal layer (14), wherein said second fabric sheet (20) is comprised of non-thermoplastic materials, and said other fabric sheet (12) comprises thermoplastic polymeric fibers.
Claim 11
Dependent Claim
64 words
A method of shielding operating room personnel, equipment and surgical patients from laser radiation in a field of surgery where lasers are being used comprising covering said personnel, equipment or patient with a laser shield characterized in that said shield is the laser shield (10) of Claim 1, and said shield (10) is positioned so that said fabric sheet (12) is towards said laser.
Claim 12
Dependent Claim
59 words
A method of shielding a patient from laser radiation during laser surgery comprising covering the operative site on said patient with a laser-resistant surgical drape characterized by the feature that said surgical drape is the laser-resistant surgical drape (10) of Claim 8, and said drape is positioned such that said second fabric sheet (20) is closest to the patient.
References Cited (Backward Citations)
No citation records indexed.
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