USRE34816EExpiredUtility

Reflective surgical drape

27
Assignee: O R CONCEPTS INCPriority: Jul 25, 1986Filed: Feb 20, 1991Granted: Jan 3, 1995
Est. expiryJul 25, 2006(expired)· nominal 20-yr term from priority
Inventors:Robert J. Poettgen
A61F 2013/53445A61F 2013/51095A61F 2007/026A61F 2007/0257A61B 46/40A61F 2013/15048A61F 2013/00187A61F 2007/0255A61F 7/02A61B 46/00B32B 27/12B32B 2535/00B32B 2255/205B32B 2255/10B32B 2311/24B32B 2323/046B32B 27/32Y10T442/656Y10T428/31913Y10T442/674Y10T428/31692
27
PatentIndex Score
3
Cited by
38
References
34
Claims

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.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. 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.]. .Iadd.an electrically .Iaddend.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.Iadd.; wherein said drape is non-perforated.Iaddend..     
     
     
       2. 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. 
     
     
       3. 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. 
     
     
       4. A reflective surgical drape according to claim 3, wherein said vacuum deposited non-conductive core layer of aluminum has a thickness of 300 Å. 
     
     
       5. 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. 
     
     
       6. 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. 
     
     
       7. 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. 
     
     
       8. 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. 
     
     
       9. 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. 
     
     
       10. A reflective surgical drape according to claim 9, wherein said adhesive is acrylic and moisture proof. 
     
     
       11. 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. 
     
     
       12. A reflective surgical drape according to claim 11, wherein said non-woven layer has a thickness of from 0.0015 to 0.040 mils. 
     
     
       13. A reflective surgical drape according to claim 12, wherein said non-woven layer has a thickness of from 0.014 to 0.016 mils. 
     
     
       14. 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. 
     
     
       15. A reflective surgical drape according to claim 14, wherein said adhesive is acrylic and moisture proof. 
     
     
       16. 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. 
     
     
       17. 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. 
     
     
       18. 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. 
     
     
       19. 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. 
     
     
       20. 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.]. .Iadd.an electrically .Iaddend.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.Iadd.; wherein said drape is non-perforated.Iaddend..     
     
     
       21. 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. 
     
     
       22. 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. 
     
     
       23. A reflective surgical drape according to claim 22, wherein said vacuum deposited non-conductive layer of aluminum has a thickness of 300 Å. 
     
     
       24. 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. 
     
     
       25. A reflective surgical drape according to claim 24, wherein said thermoplastic material of said second layer is low-density polyethylene. 
     
     
       26. A reflective surgical drape according to claim 20, wherein said second layer has a thickness of from 0.00120 to 0.00130 mils. 
     
     
       27. A reflective surgical drape according to claim 26, wherein said second layer has a thickness of 0.00125 mils. 
     
     
       28. 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. 
     
     
       29. A reflective surgical drape according to claim 28, wherein said non-woven layer has a thickness of from 0.0015 to 0.040 mils. 
     
     
       30. A reflective surgical drape according to claim 29, wherein said non-woven layer has a thickness of from 0.014 to 0.016 mils. 
     
     
       31. 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. 
     
     
       32. A reflective surgical drape according to claim 31, wherein said adhesive is acrylic and moisture-proof. 
     
     
       33. 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.]. .Iadd.an electrically .Iaddend.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.Iadd.; and wherein said drape is nonperforated.Iaddend.. .Iadd.     
     
     
       34.  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) an electrically 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; wherein said non-woven layer of absorbent material is attached with an adhesive to said first adjacent layer of a thermoplastic material. .Iaddend. .Iadd.35. 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) an electrically 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 layer of non-woven absorbent material is attached with an     
     
     
        adhesive to said layer of aluminum. .Iaddend. .Iadd.36.  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) an electrically 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;   and wherein said non-woven layer of absorbent material is attached with an adhesive to said first adjacent layer of a thermoplastic material. .Iaddend. .Iadd.37. A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, consisting of:     (a) an electrically 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. .Iaddend. .Iadd.38.  A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, consisting of: (a) an electrically non-conductive first layer of aluminum;   (b) a second layer of a thermoplastic material integrally attached to said non-conductive first layer of aluminum; and   (c) a third layer of non-woven absorbent material integrally attached to said non-conductive first layer of aluminum. .Iaddend. .Iadd.39. A reflective surgical drape for covering a surgical patient and reducing heat loss from the patient's body during and after a surgical procedure, consisting of:   (a) an electrically 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. .Iaddend.

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