Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Intraocular lens
Patent
1998-02-13
2000-02-29
Smith, Jeffrey A.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Intraocular lens
623 11, A61F 216, A61F 202
Patent
active
060304162
ABSTRACT:
Reduced trauma medical implants and methods for their use are disclosed wherein at least a portion of the implant is formed of a stretch-crystallizable elastomeric material formulated to exhibit the property of stretch crystallization upon substantial elongation of the implant to form stable, small-incision implant configurations having at least one dimension substantially reduced for insertion through a surgical incision that is small relative to the incision size necessary to implant the unstretched implant. Exemplary embodiments include intraocular implants formed of optically clear, high refractive index stretch-crystallizable silicone elastomers formulated to stretch crystallize at near ambient temperatures upon elongations greater than or equal to 300% and to recover their original configuration immediately upon exposure to body temperature following implantation.
REFERENCES:
patent: 4573998 (1986-03-01), Mazzocco
patent: 4702244 (1987-10-01), Mazzocco
patent: 4946470 (1990-08-01), Sulc et al.
patent: 5492993 (1996-02-01), Saam et al.
patent: 5702441 (1997-12-01), Zhou
Huo Peter P.
Liau Christine J. Y.
Zhou Stephen Q.
Pharmacia & UpJohn AB
Smith Jeffrey A.
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