Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Matrices
Patent
1995-04-03
1997-04-29
Webman, Edward J.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Matrices
424487, 424484, 2523153, 2523154, 514944, A61K 4736, A61K 4732, A61M 2504
Patent
active
056246854
ABSTRACT:
The improved vascular lesion embolizing material comprises a high-polymer gel capable of absorbing water in an amount of 10 ml/g and more. The high-polymer gel is preferably such as is produced by first permitting a solution containing a water-soluble high polymer to be precipitated in a solution containing polyvalent cation, said high polymer having a plurality of monovalent anionic functional groups, and then immersing the resulting precipitate in a salt solution. The material will swell upon contact with blood and is capable of embolizing a focal lesion in a blood vessel without causing any adverse effects on the living body. The swell time can be shortened if the embolizing material is made of a high-polymer gel that has been treated with a salt solution after precipitation.
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Goto Katsuya
Nakamura Hideki
Takahashi Toru
Terumo Kabushiki Kaisha
Webman Edward J.
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