Multilayer protective coverings with a sealing solution

• US 5,483,697 A
• Filed: 10/01/1993
• Issued: 01/16/1996
• Est. Priority Date: 05/22/1989
• Status: Expired due to Fees

• Current Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Original Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Inventors: Fuchs, Ingbert E.
• Primary Examiner(s): Crowder, C. D.
• Assistant Examiner(s): Vanatta, Amy B.
• Application Number:
  US08/129,110
• Time in Patent Office: 837 Days
• Field of Search: 2/161.7, 2/167, 2/168, 2/169, 2/21, 2/901, 2/159, 2/161.6, 128/842, 128/844, 128/917, 128/918, 604/346, 604/347, 604/349, 428/916, 428/137, 428/138, 428/492, 428/493, 428/35.2, 428/520, 428/521, 428/494, 424/402, 424/404, 424/405, 424/443
• US Class Current: 2/161.7
• CPC Class Codes: A41D 19/0058 Three-dimensional gloves
• CPC Class Codes: A41D 19/0096 Means for resisting mechanical agressions, e.g. cutting or piercing
• CPC Class Codes: A61B 42/00 Surgical gloves; Finger-stalls specially adapted for surgery; Devices for handling or treatment thereof
• CPC Class Codes: A61B 42/10 Surgical gloves
• CPC Class Codes: A61F 2006/043 with more than one barrier
• CPC Class Codes: A61F 6/04 Condoms, sheaths or the like , e.g. combined with devices protecting against contagion

Abstract

Protective covering such as a surgical glove, finger cot or condom having two layers with a middle layer of sealing solution disposed between the two layers. The solution operates to fill punctures or tears in the two layers. The middle layer may include an evaporation inhibitor to inhibit evaporation of antimicrobial or sealing solutions in the middle layer.

Claims

1. A glove comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers; and

a middle layer comprising a sealing solution disposed between the inner and outer layers operable to seal holes in the inner or outer layers.

2. The glove of claim 1 wherein the sealing solution comprises a hydrogel.

3. The glove of claim 2 wherein the hydrogel is a natural hydrogel, a synthetic natural-based hydrogel, or a synthetic hydrogel.

4. The glove of claim 2 wherein the hydrogel is corn starch, potato starch, tapioca, sorghum starch, wheat starch, sago starch, or amylomaize starch.

5. The glove of claim 2 wherein the hydrogel is dextran, carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, or hydroxypropylcellulose.

6. The glove of claim 2 wherein the hydrogel is polyethylene glycol, polyethylene oxide, polyvinylpyrrolidone, hydroxyethyl methacrylate, polyhydroxyalkyl methacrylate or polymethacrylamide derivatives.

7. The glove of claim 1 wherein the sealing solution comprises corn starch.

8. The glove of claim 7 wherein the sealing solution comprises sucrose.

9. The glove of claim 7 wherein the sealing solution comprises nonoxynol-9.

10. The glove of claim 1 wherein the sealing solution comprises about 2-12 weight percent corn starch.

11. The glove of claim 1 wherein the sealing solution comprises about 4-10 weight percent corn starch.

12. The glove of claim 1 wherein the sealing solution comprises about 5-8 weight percent corn starch.

13. The glove of claim 1 wherein the sealing solution comprises potato starch.

14. The glove of claim 1 wherein the sealing solution comprises tapioca.

15. The glove of claim 1 wherein the sealing solution comprises an emulsifier.

16. The glove of claim 1 wherein the sealing solution comprises a surfactant.

17. The glove of claim 1 wherein the sealing solution comprises a dye.

18. The glove of claim 1 wherein the sealing solution comprises an antimicrobial solution.

19. The glove of claim 1 wherein the sealing solution comprises nonoxynol-9.

20. The glove of claim 1 wherein the sealing solution is operable to seal holes of up to about 0.15 mm average diameter.

21. The glove of claim 1 wherein the sealing solution is operable to seal holes of up to about 0.10 mm average diameter.

22. The glove of claim 1 wherein the sealing solution is operable to seal holes of up to about 0.07 mm average diameter.

23. The glove of claim 1 wherein the middle layer has an average thickness of less than about 0.12 millimeter.

24. The glove of claim 1 wherein the middle layer has an average thickness of between about 0.01 and 0.09 millimeter.

25. The glove of claim 1 wherein the middle layer has an average thickness of between about 0.025 and 0.05 millimeter.

26. The glove of claim 1 wherein the thickness of the glove is about 0.1 to 0.25 millimeter.

27. The glove of claim 1 wherein the first and second layers each have a thickness of between about 0.2 and 0.5 millimeters.

28. The glove of claim 2 wherein the hydrogel is operable to inhibit evaporation of the solution.

29. The glove of claim 1 wherein the glove maintains at least about 60 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

30. The glove of claim 1 wherein the glove maintains about 10-60 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

31. The glove of claim 1 wherein the glove maintains at least about 10 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

32. The glove of claim 1 wherein the glove maintains at least about 75 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

33. The glove of claim 1 wherein the glove maintains about 10-75 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

34. The glove of claim 1 wherein the glove maintains at least about 10 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

35. The glove of claim 1 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex glove.

36. The glove of claim 1 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex glove, but less than the sense of feel of a single layer 0.100 mm thick latex glove.

37. The glove of claim 1 wherein the sealing solution is operable to leak during use through holes in the inner layer and adhere the glove to a wearer.

38. A glove comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers; and

a middle layer comprising an antimicrobial solution disposed between the inner and outer layers, said solution comprising an evaporation inhibitor operable to inhibit evaporation of the solution.

39. The glove of claim 38 wherein the antimicrobial solution comprises a hydrogel.

40. The glove of claim 39 wherein the hydrogel is a natural hydrogel, a synthetic natural-based hydrogel, or a synthetic hydrogel.

41. The glove of claim 38 wherein the antimicrobial solution comprises corn starch.

42. The glove of claim 38 wherein the glove maintains at least about 60 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

43. The glove of claim 38 wherein the glove maintains about 10-60 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

44. The glove of claim 38 wherein the glove maintains at least about 10 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

45. The glove of claim 38 wherein the glove maintains at least about 75 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

46. The glove of claim 38 wherein the glove maintains about 10-75 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

47. The glove of claim 38 wherein the glove maintains at least about 10 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

48. The glove of claim 38 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex glove.

49. The glove of claim 38 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex glove, but less than the sense of feel of a single layer 0.100 mm thick latex glove.

50. The glove of claim 38 wherein the antimicrobial solution is operable to leak during use through the gaps in the inner layer and adhere the glove to a wearer.

51. A condom comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers; and

a middle layer comprising a sealing solution disposed between the inner and outer layers operable to seal holes in the inner or outer layers.

52. The condom of claim 51 wherein the sealing solution is operable to seal holes of up to about 0.15 mm average diameter.

53. The condom of claim 51 wherein the sealing solution is operable to seal holes of up to about 0.10 mm average diameter.

54. The condom of claim 51 wherein the sealing solution is operable to seal holes of up to about 0.07 mm average diameter.

55. The condom of claim 51 wherein the sealing solution comprises an antimicrobial solution.

56. The condom of claim 51 wherein the sealing solution comprises a hydrogel.

57. The condom of claim 56 wherein the hydrogel is a natural hydrogel, a synthetic natural-based hydrogel, or a synthetic hydrogel.

58. The condom of claim 51 wherein the sealing solution comprises corn starch.

59. The condom of claim 56 wherein the hydrogel is operable to inhibit evaporation of the solution.

60. The condom of claim 51 which maintains at least about 60 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

61. The condom of claim 51 which maintains about 10-60 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

62. The condom of claim 51 which maintains at least about 10 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

63. The condom of claim 51 which maintains at least about 75 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

64. The condom of claim 51 which maintains about 10-75 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

65. The condom of claim 51 which maintains at least about 10 percent of its sealing solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

66. The condom of claim 51 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex condom.

67. The condom of claim 51 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex condom, but less than the sense of feel of a single layer 0.100 mm thick latex condom.

68. The condom of claim 51 wherein the sealing solution is operable to leak during use through the gaps in the inner layer and adhere the condom to a wearer.

69. The condom of claim 51 wherein the sealing solution comprises a skin-adherent.

70. A condom comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers and

a middle layer comprising an antimicrobial solution disposed between the inner and outer layers, said solution comprising an evaporation inhibitor operable to inhibit evaporation of the antimicrobial solution during use.

71. The condom of claim 70 wherein the antimicrobial solution comprises a hydrogel.

72. The condom of claim 71 wherein the hydrogel is a natural hydrogel, a synthetic natural-based hydrogel, or a synthetic hydrogel.

73. The condom of claim 70 wherein the antimicrobial solution comprises corn starch.

74. The condom of claim 70 wherein the antimicrobial solution is operable to adhere the first layer to the second layer.

75. The condom of claim 70 which maintains at least about 60 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

76. The condom of claim 70 which maintains about 10-60 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

77. The condom of claim 70 which maintains at least about 10 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 90 days.

78. The condom of claim 70 which maintains at least about 75 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

79. The condom of claim 70 which maintains about 10-75 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

80. The condom of claim 70 which maintains at least about 10 percent of its antimicrobial solution when stored at 18°

-21°

C. and 50% relative humidity for 21 days.

81. The condom of claim 70 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex condom.

82. The condom of claim 70 which provides a sense of feel during use at least as great as the sense of feel of a single layer 0.200 mm thick latex condom, but less than the sense of feel of a single layer 0.100 mm thick latex condom.

83. The condom of claim 70 wherein the antimicrobial solution is operable to leak during use through the gaps in the inner layer and adhere the condom to a wearer.

84. A finger cot comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers; and

middle layer comprising a sealing solution disposed between the inner and outer layers operable to seal holes in the inner or outer layers.

85. A finger cot comprising:

an inner layer;

an outer layer;

an impermeable seal between the inner and outer layers; and

a middle layer of antimicrobial solution disposed between the inner and outer layers, said solution comprising an evaporation inhibitor operable to inhibit evaporation of the antimicrobial solution during use.