[특허]Non-adherent nasal, sinus and otic packing and method for processing sponge materials in fabrication of packings

[미국특허] Non-adherent nasal, sinus and otic packing and method for processing sponge materials in fabrication of packings 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61F-013/15
출원번호	US-0778141 (1997-01-02)
발명자 / 주소	Cercone Ronald J.
출원인 / 주소	Xomed Surgical Products, Inc.
인용정보	피인용 횟수 : 25 인용 특허 : 0

초록 ▼

Nasal, sinus and otic packings exhibiting a less adherent surface when in contact with tissue and being less traumatic on removal are prepared. In a first embodiment, polyvinyl acetal foamed packing material undergoes a surface modification imparting a non-adherent hydrogel coated surface. The surface modification is accomplished after final processing and fabrication of the packing product shape. The packing material is subjected to either an atomized spray of an aqueous solution of ethyl alcohol or a polyvinyl acetate/polyvinyl alcohol copolymer. In another embodiment, a foamed polyvinyl acetal material is produced by crosslinking polyvinyl alcohol with an organic compound containing two hydroxyl reactive groups in the presence of an inert gas. An aqueous solution containing polyvinylpyrrolidone is mixed into the reaction during crosslinking. The recovered sponge material foam product is cut or molded into a packing thereby resulting in the production of a packing having a uniformly dispersed gel throughout and as an outer hydrogel coating. Nasal, sinus and otic packings prepared by these methods exhibit a less adherent surface upon contact with tissue and are far less traumatic to the tissue upon removal.

대표청구항 ▼

[ What is claimed is:] [1.] A sponge packing for insertion into a body cavity comprising;a sterile compressed packing constructed of an open cell foam material having a pore diameter size which is not greater than 1.2 mm and having instantaneous wicking properties allowing the packing to swell and be free standing inside said cavity, the packing having an exterior lubricious, non-stick hydrogel surface layer formed from a polymer selected from the group consisting of: (a) a copolymer blend of polyvinyl acetate and polyvinyl alcohol and (b) polyvinylpyrrolidone, the hydrogel surface layer having a thickness ranging from 0.0005 to 0.0030 inches for placement against a wall area in said body cavity, said hydrogel surface layer providing controlled absorbency into said open cell material and forming a substantially closed outer surface in relation to said open cell foam material thereby reducing tissue attachment and removal shear forces of the packing.

이 특허를 인용한 특허 (25) 인용/피인용 타임라인 분석

Donlon, Kieran; Stephenson, Jim, Cuff for use with medical tubing and method and apparatus for making the same.
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Clayton, Jessica, Endotracheal cuff and technique for using the same.
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Maguire, Seamus; Morris, Sean; O'Neill, Paul; Tiernan, Patrick Joseph, Endotracheal cuff and technique for using the same.
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Nelson, Donald S.; Mehta, Dhairya, Endotracheal cuff and technique for using the same.
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Nelson, Donald S.; Mehta, Dhairya, Endotracheal cuff and technique for using the same.
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Nelson, Donald S.; Mehta, Dhairya, Endotracheal cuff and technique for using the same.
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Nelson, Donald S.; Mehta, Dhairya, Endotracheal cuff and technique for using the same.
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Nelson, Donald S.; Mehta, Dhairya, Endotracheal cuff and technique for using the same.
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Cercone Ronald J., Medical sponge having mucopolysaccharide coating.
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Buckman, Robert F.; Lenker, Jay A.; Kolehmainen, Donald J., Method and apparatus for hemostasis.
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Buckman, Robert F.; Lenker, Jay A.; Kolehmainen, Donald J., Method and apparatus for hemostasis.
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Buckman,Robert F.; Lenker,Jay A.; Kolehmainen,Donald J., Method and apparatus for hemostasis.
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Buckman,Robert F.; Lenker,Jay A., Method and apparatus for improved hemostasis and damage control operations.
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Prywes, Arnold S., Method for fluid control in medical applications.
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Cercone Ronald J. ; Bays F. Barry, Method for rinsing a high density sponge.
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Clayton, Jessica; Nelson, Donald S.; Swedlow, David; Colburn, Joel; Mecca, Roger, Method for shipping and protecting an endotracheal tube with an inflated cuff.
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Gvozdic, Nedeljko Vladimira, Methods for the preparation of cellular hydrogels.
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Martens, Paul W.; Colburn, Joel C., Multi-layer cuffs for medical devices.
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Hudson, John Overton; Bauer, Alberto, Nasal packing device.
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Hudson, John Overton; Bauer, Alberto, Nasal packing device.
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Crumback, Gary L.; Porges, Charles E.; Chung, Alfred; Hyde, David, Self-sizing adjustable endotracheal tube.
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O'Neil, Michael P.; Colburn, Joel C., Self-sizing adjustable endotracheal tube.
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O'Neil, Michael P.; Colburn, Joel C.; Crumback, Gary L.; Porges, Charles E.; Chung, Alfred; Hyde, David, Self-sizing adjustable endotracheal tube.
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Buckman, Robert F.; Lenker, Jay A., Surgical packing devices.
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Campbell, Shannon E., System and sensor for early detection of shock or perfusion failure and technique for using the same.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Non-adherent nasal, sinus and otic packing and method for processing sponge materials in fabrication of packings 원문보기