US4041942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical drape
Assignee: Baxter International Inc
•
Filing: 1976-06-15
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Granted: 1977-08-16
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Expires: 1996-06-15
Abstract
Abstract A drape for use in surgical procedures including a sterile sheet, a generally diamond-shaped opening in the sheet, and a slot extending from a corner of the opening to an edge of the sheet. The sheet is constructed of a disposable non-woven cellulosic material and the opening and the slot have folded edges formed by reversely folded portions of the material. A reinforcing sheet having a matching diamond-shaped opening and a matching slot can be secured to the main sheet in superimposed relation. The main sheet and the reinforcing sheet have respective openings and slots in direct alignment to define a fenestrated surgical drape having a pair of split end portions.
Inventors
- 👤 Ramon C. Dougan
- 👤 Helen T. Rudtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:38
CPC Classifications
A; A61; A61B; A61B46/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
34 words
A surgical drape comprising a sterile sheet of non-woven cellulosic material, a generally diamond-shaped opening in said sheet and a slot extending from a corner of said opening to an edge of said sheet.
Claim 2
Dependent Claim
34 words
A surgical drape comprising a sterile sheet of non-woven cellulosic material, a generally diamond-shaped opening in said sheet and a slot extending from a corner of said opening to an edge of said sheet.
Claim 3
Dependent Claim
16 words
The surgical drape of claim 1 in which said opening and said slot have folded edges.
Claim 4
Dependent Claim
27 words
The surgical drape of claim 2 in which said folded edges are formed by reversely folding portions of said sheet to define said opening and said slot.
Claim 5
Dependent Claim
29 words
The surgical drape of claim 3 in which the reversely folded portions defining said opening are generally triangular and the reversely folded portions defining said slot are generally trapezoidal.
Claim 6
Dependent Claim
18 words
The surgical drape of claim 3 in which the reversely folded portions are adhesively bonded to said sheet.
Claim 7
Dependent Claim
39 words
The surgical drape of claim 1 in which said sheet is rectangular in configuration and has a pair of opposing side edges and a pair of opposing end edges with said slot extending to one of said end edges.
Claim 8
Dependent Claim
28 words
The surgical drape of claim 1 in which a reinforcing tab is secured to said sheet adjacent each of the corners of said opening spaced from said slot.
Claim 9
Dependent Claim
22 words
The surgical drape of claim 1 in which said non-woven cellulosic material is resistant to the passage of liquid through said sheet.
Claim 10
Dependent Claim
22 words
The surgical drape of claim 1 in which said sheet includes longitudinal and transverse reinforcing fibers integral with said non-woven cellulosic material.
Claim 11
Dependent Claim
103 words
A sterile surgical drape comprising a main sheet of non-woven cellulosic material having a generally diamond-shaped opening therethrough and having a slot extending from a corner of said opening to an edge of said sheet, and a reinforcing sheet having a matching diamond-shaped opening and a matching slot, said main sheet and said reinforcing sheet being secured together in superimposed relation with their respective openings and slots in direct alignment, and said aligned openings together defining a fenestration through said drape and said slots dividing the portion of said drape between said fenestration and said edge into a pair of split end portions.
Claim 12
Dependent Claim
103 words
A sterile surgical drape comprising a main sheet of non-woven cellulosic material having a generally diamond-shaped opening therethrough and having a slot extending from a corner of said opening to an edge of said sheet, and a reinforcing sheet having a matching diamond-shaped opening and a matching slot, said main sheet and said reinforcing sheet being secured together in superimposed relation with their respective openings and slots in direct alignment, and said aligned openings together defining a fenestration through said drape and said slots dividing the portion of said drape between said fenestration and said edge into a pair of split end portions.
Claim 13
Dependent Claim
18 words
The sterile surgical drape of claim 10 in which said reinforcing sheet is formed of non-woven cellulosic material.
Claim 14
Dependent Claim
30 words
The sterile surgical drape of claim 11 in which said reinforcing sheet includes a barrier film of liquid impermeable plastic material extending along the side thereof facing said main sheet.
Claim 15
Dependent Claim
17 words
The sterile surgical drape of claim 10 in which said openings and said slots have folded edges.
Claim 16
Dependent Claim
28 words
The sterile surgical drape of claim 13 in which said folded edges are formed by reversely folding portions of said sheets to define said openings and said slots.
Claim 17
Dependent Claim
30 words
The sterile surgical drape of claim 14 in which the reversely folded portions defining said openings are generally triangular and the reversely folded portions defining said slots are generally trapezoidal.
Claim 18
Dependent Claim
40 words
The sterile surgical drape of claim 14 in which the reversely folded portions of said main sheet are adhesively bonded to said main sheet and the reversely folded portions of siad reinforcing sheet are adhesively bonded to said reinforcing sheet.
Claim 19
Dependent Claim
19 words
The sterile surgical drape of claim 16 in which said reinforcing sheet is adhesively bonded to said main sheet.
Claim 20
Dependent Claim
30 words
The sterile surgical drape of claim 17 in which a reinforcing tab is secured to said sheets adjacent each of the corresponding corners of said openings spaced from said slots.
Claim 21
Dependent Claim
37 words
The sterile surgical drape of claim 18 in which said reinforcing tabs are a thin plastic film having pressure sensitive adhesive on both sides thereof for resisting forces tending to tear the corresponding corners of said openings.
Claim 22
Dependent Claim
48 words
The sterile surgical drape of claim 10 in which said sheets are rectangular in configuration and each of said sheets has a pair of opposing side edges and a pair of opposing end edges with said slots in said sheets extending to corresponding ones of said end edges.
Claim 23
Dependent Claim
20 words
The sterile surgical drape of claim 18 in which said reinforcing sheet covers a major portion of said main sheet.
Claim 24
Dependent Claim
55 words
The sterile surgical drape of claim 10 in which said opening and said slot of said main sheet have folded edges formed by reversely folding integral portions of said sheet, said reversely folded portions being disposed on the side of said main sheet facing said reinforcing sheet and being adhesively secured to said reinforcing sheet.
Claim 25
Dependent Claim
65 words
The sterile surgical drape of claim 22 in which said main sheet has a pair of spaced opposing obtusely angled corners disposed at the merger of said opening and said slot, said main sheet having quadruple thickness of material along said slot adjacent said opposing corners formed by refolding folded integral portions as said main sheet is folded to define said opening and said slot.
Claim 26
Dependent Claim
55 words
The sterile surgical drape of claim 23 in which said opening and said slot of said reinforcing sheet have folded edges formed by reversely folding integral portions of said sheet, said reversely folded portions being disposed on the side of said main sheet facing said reinforcing sheet and being adhesively secured to said reinforcing sheet.
Claim 27
Dependent Claim
66 words
The sterile surgical drape of claim 24 in which said reinforcing sheet has a pair of spaced opposing obtusely angled corners disposed at the merger of said opening and said slot, said reinforcing sheet having double quadruple thickness of material along said slot adjacent said opposing corners formed by refolding folded integral portions as said reinforcing sheet is folded to define said opening and said slot.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |