Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1997-01-02
1998-12-01
Weiss, John G.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
602 46, 604363, A61F 1315
Patent
active
058430601
ABSTRACT:
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.
REFERENCES:
patent: 2659935 (1953-11-01), Hammon
patent: 2664366 (1953-12-01), Wilson
patent: 2664367 (1953-12-01), Wilson
patent: 3390671 (1968-07-01), Hildenbrand
patent: 3695989 (1972-10-01), Albert
patent: 3783872 (1974-01-01), King
patent: 3892905 (1975-07-01), Albert
patent: 4066488 (1978-01-01), von der Lehr
patent: 4098728 (1978-07-01), Rosenblatt
patent: 4394457 (1983-07-01), Ogasa
patent: 4423099 (1983-12-01), Mueller et al.
patent: 4430447 (1984-02-01), Pospich et al.
patent: 4450198 (1984-05-01), Michaels
patent: 4466431 (1984-08-01), Tharrat et al.
patent: 4481326 (1984-11-01), Sonenstein
patent: 4544693 (1985-10-01), Surgant
patent: 4552138 (1985-11-01), Hofeditz et al.
patent: 4553973 (1985-11-01), Edgren
patent: 4642267 (1987-02-01), Creasy et al.
patent: 4656216 (1987-04-01), Muller et al.
patent: 4663358 (1987-05-01), Hyon et al.
patent: 4719106 (1988-01-01), Shetty et al.
patent: 4734097 (1988-03-01), Tanabe et al.
patent: 4847324 (1989-07-01), Creasy
patent: 4987182 (1991-01-01), Creasy
patent: 5001009 (1991-03-01), Whitbourne
patent: 5013769 (1991-05-01), Murray et al.
patent: 5071648 (1991-12-01), Rosenblatt
patent: 5139510 (1992-08-01), Goldsmith, III et al.
patent: 5147899 (1992-09-01), Sato et al.
patent: 5210111 (1993-05-01), Goldenberg et al.
patent: 5236703 (1993-08-01), Usala
patent: 5260066 (1993-11-01), Wood et al.
patent: 5262475 (1993-11-01), Creasy
patent: 5270358 (1993-12-01), Asmus
patent: 5284468 (1994-02-01), Nelson
patent: 5288503 (1994-02-01), Wood et al.
patent: 5352515 (1994-10-01), Jarrett et al.
patent: 5370656 (1994-12-01), Shevel
patent: 5387206 (1995-02-01), Valentine et al.
patent: 5395309 (1995-03-01), Tanaka et al.
patent: 5417224 (1995-05-01), Petrus et al.
patent: 5422050 (1995-06-01), Graiver et al.
patent: 5442016 (1995-08-01), Jarrett et al.
patent: 5447505 (1995-09-01), Valentine et al.
patent: 5466231 (1995-11-01), Cercone et al.
patent: 5527271 (1996-06-01), Shah et al.
patent: 5556391 (1996-09-01), Cercone et al.
Ruhl Dennis
Weiss John G.
Xomed Surgical Products, Inc.
LandOfFree
Non-adherent nasal, sinus and otic packing and method for proces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-adherent nasal, sinus and otic packing and method for proces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-adherent nasal, sinus and otic packing and method for proces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2391733