发明名称 |
BIO-OSMOTIC GEL FOR IMPLANT PROSTHESES |
摘要 |
An improved bio-osmotic gel for filling implant lumens consisting substantially of an amount of a bio-compatible organic polymer and a solution of bio-compatible salt is disclosed which exhibits osmotic qualitites closely paralleling that of human body serum and improved radiolucency with respect to silicone oil and saline. The bio-osmotic gel can contain a polymer having the empirical formula [(CHCH2)2N(CH2)3CO]n i.e. polyvinylpyrrollidone. The bio-compatible salt can be made of a low Z value salt such as sodium bicarbonate, sodium acetate, or sodium lactate. The gel material should have an osmolarity between 250 and 350 milliosmoles and have an X-ray absorption under standard exposure approximately equal to that of breast tissue such that processed mammographic X-ray film will have an optical density of 1.2 to 1.3 and an average penetrance of between 9.2 and 30.0 milliroentgens. |
申请公布号 |
AU7492391(A) |
申请公布日期 |
1991.10.21 |
申请号 |
AU19910074923 |
申请日期 |
1991.03.20 |
申请人 |
BIOPLASTY, INCORPORATED |
发明人 |
ROBERT A ERSEK;ARTHUR A. BEISANG II |
分类号 |
A61F2/12;A61B19/00;A61L27/00;A61L27/16;A61L27/50 |
主分类号 |
A61F2/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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