Surgery: splint – brace – or bandage – Bandage structure
Reexamination Certificate
2000-11-20
2002-10-29
Brown, Michael A. (Department: 3764)
Surgery: splint, brace, or bandage
Bandage structure
C602S042000, C602S048000, C602S052000, C602S900000
Reexamination Certificate
active
06472581
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a silicone sheet exhibiting excellent adhesion, protective properties and conformity when applied to the affected part and also excellent physical strength; and a surgical dressing made using the silicone sheet and a manufacturing process thereof.
BACKGROUND ART
A surgical dressing serves to protect the skin suffering from a burn or another injury such as traumatic injury, thereby promoting its recovery. Among various surgical dressings, a pressure dressing has been used widely for the treatment of hypertrophic scar, keloid or the like with a view not to disturbing the function of the affected part, for example, joint movement while completely protecting it from the outside world. This pressure dressing is however accompanied with such a drawback that it is not conformable to the joint movement or the like of patients, thereby impairing their moving function. In “Burns, Vol. 9, pages 201-204”, described is the use of a silicone gel which can adapt and adhere itself readily to the contours of the human body.
Although such a silicone gel has strong adhesion and good conformity, its stickiness impairs handling properties and in addition, owing to weak physical strength, it is easily torn when formed into a sheet. It has been proposed in Japanese Patent Application Laid-Open No. Hei 3-75055 to improve this physical strength by using a woven cloth, nonwoven cloth or film for the inside or one side of the gel sheet as a reinforcing agent. Use of a film or nonwoven cloth however markedly impairs the preferable conformity of the silicone gel sheet, while a crepe gauze does not exhibit sufficient reinforcing power and its conformity is not satisfactory. In Japanese Patent Application Laid-Open No. Hei 1-34370, proposed is a laminate of a silicone gel sheet and a silicon elastomer. This laminate overcomes the above-described drawbacks to some extent, but not sufficiently. In addition, this proposal needs an extra step for forming the silicone elastomer into a sheet or film by calendering or the like prior to laminating with the silicone gel sheet. It is difficult to form this silicone elastomer film to have a thickness of 0.1 mm or less owing to limitations upon processing, which disturbs the production of a laminated sheet having satisfactory conformity.
An object of the present invention is therefore to provide a surgical dressing which is made using a silicone gel sheet having improved physical strength without losing its original excellence in adhesion, protective properties of the affected part and conformity thereto; is readily handled; and is excellent in the prevention or treatment of skin troubles or diseases.
REFERENCES:
patent: 4991574 (1991-02-01), Pocknell
patent: 1-34370 (1989-02-01), None
patent: 5-69512 (1993-03-01), None
patent: 9-207275 (1997-08-01), None
Fujimoto Masaya
Muramatsu Hiroshi
Brown Michael A.
Fujiyakuhin Co., Ltd.
Hamilton Lalita M
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Silicone sheet and surgical bandage manufactured using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silicone sheet and surgical bandage manufactured using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicone sheet and surgical bandage manufactured using the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2933016