Patent ID: 11857702
Assignee: NATVI
Field: Medical technology (Instruments)
Classification: CPC A  C  B  F | IPC A  C

Claim 3:
4. A lubricated element essentially consisting of at least one layer of hyaluronic acid crosslinked by a crosslinking agent which is a titanium chelate that is soluble and stable in water, the at least one layer of crosslinked hyaluronic acid being covered by a layer of non-crosslinked hyaluronic acid; and
wherein the crosslinking agent is a chelate of formula 1 below:, where A is Ti, and
where R1 is a functional group containing an oxygen or nitrogen atom, R2 represents two or three carbon atoms, and R3 and R4 represent a linear or branched or cyclic C1-C4 alkyl.