US4765323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective surgical drape
Assignee: Vital Signs Inc
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Filing: 1986-07-25
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Granted: 1988-08-23
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Expires: 2006-07-25
Abstract
Abstract A new, lightweight reflective surgical drape which is effective in reducing the rate of heat loss in human patients during a variety of surgical procedures is disclosed. The drape comprises a core layer of non-conductive aluminum and a first and second adjacent layer of a thermoplastic material. A non-woven layer of absorbent material is attached to either the first or second adjacent layer of thermoplastic material. In a preferred embodiment, the drape of the present invention comprises a first layer of non-conductive aluminum and a second layer of a thermoplastic material. A third layer of non-woven absorbent material is attached to the first layer of non-conductive aluminum.
Inventors
- 👤 Robert J. Poettgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A61; A61B; A61B46/00; A61F; A61F7/00; A61F7/02; B32B27/32; A61B46/40; A61F2007/0244; A61F2007/0249; A61F2007/0255; A61F2007/0257; A61F2007/026; A61F13/00; A61F2013/00089; A61F2013/00187; A61F13/15; A61F2013/15008; A61F2013/15048; A61F13/51; A61F2013/51095; A61F13/53; A61F13/534; A61F2013/53445; B32B2255/00; B32B2255/10; B32B2255/20; B32B2255/205; B32B2311/00; B32B2311/24; B32B2323/00; B32B2323/04; B32B2323/046; B32B2535/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656; Y10T442/674
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
56 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive core layer of aluminum; (b) a first and second adjacent layer of a thermoplastic material; and (c) a non-woven layer of absorbent material attached to said first adjacent layer.
Claim 2
Dependent Claim
56 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive core layer of aluminum; (b) a first and second adjacent layer of a thermoplastic material; and (c) a non-woven layer of absorbent material attached to said first adjacent layer.
Claim 3
Dependent Claim
27 words
A reflective surgical drape according to claim 1, wherein said non-conductive core layer of aluminum is vacuum deposited to said first adjacent layer of a thermoplastic material.
Claim 4
Dependent Claim
27 words
A reflective surgical drape according to claim 2, wherein said vacuum deposited non-conductive core layer of aluminum has a thickness of from 270 Å to 330 Å.
Claim 5
Dependent Claim
23 words
A reflective surgical drape according to claim 3, wherein said vacuum deposited non-conductive core layer of aluminum has a thickness of 300 Å.
Claim 6
Dependent Claim
37 words
A reflective surgical drape according to claim 1, wherein said thermoplastic material of said first adjacent layer and said second adjacent layer is selected from the group consisting of low-density polyethylene, medium-density polyethylene, polypropylene, polyester or polybutylene.
Claim 7
Dependent Claim
25 words
A reflective surgical drape according to claim 5, wherein said thermoplastic material of said first adjacent layer and said second adjacent layer is low-density polyethylene.
Claim 8
Dependent Claim
28 words
A reflective surgical drape according to claim 1, wherein said first adjacent layer and said second adjacent layer each have a thickness of from 0.00120 to 0.00130 mils.
Claim 9
Dependent Claim
25 words
A reflective surgical drape according to claim 7, wherein said first adjacent layer and said second adjacent layer each have a thickness of 0.00125 mils.
Claim 10
Dependent Claim
29 words
A reflective surgical drape according to claim 2, wherein said second adjacent layer of a thermoplastic material is laminated with an adhesive to said non-conductive core layer of aluminum.
Claim 11
Dependent Claim
16 words
A reflective surgical drape according to claim 9, wherein said adhesive is acrylic and moisture proof.
Claim 12
Dependent Claim
27 words
A reflective surgical drape according to claim 1, wherein said non-woven layer of absorbent material is one or a blend of cotton, polyester, rayon, polypropylene or cellulose.
Claim 13
Dependent Claim
21 words
A reflective surgical drape according to claim 11, wherein said non-woven layer has a thickness of from 0.0015 to 0.040 mils.
Claim 14
Dependent Claim
21 words
A reflective surgical drape according to claim 12, wherein said non-woven layer has a thickness of from 0.014 to 0.016 mils.
Claim 15
Dependent Claim
25 words
A reflective surgical drape according to claim 11, wherein said non-woven layer of absorbent material is attached with a adhesive to said first adjacent layer.
Claim 16
Dependent Claim
16 words
A reflective surgical drape according to claim 14, wherein said adhesive is acrylic and moisture proof.
Claim 17
Dependent Claim
36 words
A reflective surgical drape according to claim 1, wherein a selected length of said drape is fashioned to be closely received about at least a portion of the body of the patient during the surgical procedure.
Claim 18
Dependent Claim
34 words
A reflective surgical drape according to claim 16, wherein said selected length of said drape is fashioned as a blanket which is wrapped closely about the torso of a patient undergoing a surgical procedure.
Claim 19
Dependent Claim
33 words
A reflective surgical drape according to claim 16, wherein said selected length of said drape is fashioned as a cap which serves as a head covering for a patient undergoing a surgical procedure.
Claim 20
Dependent Claim
52 words
A reflective surgical drape according to claim 16, wherein said selected length of said drape is fashioned as a limb covering for a patient undergoing a surgical procedure, said limb covering comprising a cylindrically-shaped length of said drape having an open end for receiving the patient's limb and an opposite closed end.
Claim 21
Dependent Claim
64 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive first layer of aluminum; (b) a second layer of a thermoplastic material attached to said non-conductive first layer of aluminum; and (c) a third layer of non-woven absorbent material attached to said non-conductive first layer of aluminum.
Claim 22
Dependent Claim
64 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive first layer of aluminum; (b) a second layer of a thermoplastic material attached to said non-conductive first layer of aluminum; and (c) a third layer of non-woven absorbent material attached to said non-conductive first layer of aluminum.
Claim 23
Dependent Claim
26 words
A reflective surgical drape according to claim 20, wherein said non-conductive first layer of aluminum is vacuum deposited to said second layer of a thermoplastic material.
Claim 24
Dependent Claim
26 words
A reflective surgical drape according to claim 21, wherein said vacuum deposited non-conductive layer of aluminum has a thickness of from 270 Å to 330 Å.
Claim 25
Dependent Claim
22 words
A reflective surgical drape according to claim 22, wherein said vacuum deposited non-conductive layer of aluminum has a thickness of 300 Å.
Claim 26
Dependent Claim
31 words
A reflective surgical drape according to claim 20, wherein said thermoplastic material of said second layer is selected from the group consisting of low-density polyethylene, medium-density polyethylene, polypropylene, polyester or polybutylene.
Claim 27
Dependent Claim
19 words
A reflective surgical drape according to claim 24, wherein said thermoplastic material of said second layer is low-density polyethylene.
Claim 28
Dependent Claim
21 words
A reflective surgical drape according to claim 20, wherein said second layer has a thickness of from 0.00120 to 0.00130 mils.
Claim 29
Dependent Claim
18 words
A reflective surgical drape according to claim 26, wherein said second layer has a thickness of 0.00125 mils.
Claim 30
Dependent Claim
27 words
A reflective surgical drape according to claim 20, wherein said non-woven layer of absorbent material is one or a blend of cotton, polyester, rayon, polypropylene or cellulose.
Claim 31
Dependent Claim
21 words
A reflective surgical drape according to claim 28, wherein said non-woven layer has a thickness of from 0.0015 to 0.040 mils.
Claim 32
Dependent Claim
21 words
A reflective surgical drape according to claim 29, wherein said non-woven layer has a thickness of from 0.014 to 0.016 mils.
Claim 33
Dependent Claim
28 words
A reflective surgical drape according to claim 28, wherein said non-woven layer of absorbent material is attached with an adhesive to said second layer of a thermoplastic material.
Claim 34
Dependent Claim
15 words
A reflective surgical drape according to claim 31, wherein said adhesive is acrylic and moisture-proof.
Claim 35
Dependent Claim
77 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive first layer of aluminum; (b) a second layer of a thermoplastic material attached to said non-conductive first layer of aluminum; and (c) a third layer of non-woven absorbent material attached to said non-conductive first layer of aluminum; wherein said reflective surgical drape has a resistance of at least one megaohm.
Claim 36
Dependent Claim
77 words
A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, comprising: (a) a non-conductive first layer of aluminum; (b) a second layer of a thermoplastic material attached to said non-conductive first layer of aluminum; and (c) a third layer of non-woven absorbent material attached to said non-conductive first layer of aluminum; wherein said reflective surgical drape has a resistance of at least one megaohm.
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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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |