Patent ID: 9345806
Filing Date: 2016-05-24
CPC Classification: A61L

Claim Text:
1. A process for the manufacture of a medical implant, said process comprising: reacting a mixture of non functional perfluoropolyethers, monofunctional perfluoropolyethers comprising hydroxyl terminal groups, and bifunctional perfluoropolyethers comprising hydroxyl terminal groups, wherein the average functionality is at least 1.97, mixture (M), with suitable reactants to produce a thermoplastic elastomer; and moulding the so-obtained thermoplastic elastomer to yield at least a part of the medical implant, wherein said mixture (M) consists essentially of perfluoropolyethers complying with formula (I) below: wherein: R (i) —CFXO—, wherein X is F or CF (ii) —CF (iii) —CF (iv) —CF and wherein: Z and Y, equal to or different from each other are, at each occurrence, independently chosen among: non functional groups of formula —CF functional hydroxyl groups of formula —CF —CF and wherein the thermoplastic elastomer is selected from the group consisting of a polyurethane comprising: at least one fluorinated soft block comprising a fluoropolyoxyalkene chain (R at least one stiff block comprising an hydrocarbon chain (R said blocks being linked by urethane moieties of formula (II): wherein E is a divalent hydrocarbon carbon group, linear or branched, optionally comprising aromatic rings, optionally fluorinated, and a polyester comprising: at least one fluorinated soft block comprising a fluoropolyoxyalkene chain (R at least one stiff block comprising an hydrocarbon chain (R said blocks being linked by ester moieties of formula (VIII): wherein E′ is a divalent hydrocarbon carbon group, linear or branched, optionally comprising aromatic rings, optionally fluorinated.