Patent ID: 11865785
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A  G | IPC A  B  G

Claim 20:
21. A light-polymerizable composition for use in additive manufacturing of biocompatible medical devices, comprising a biocompatible polymer, a solvent, and a biocompatible light attenuator in an amount of about 0.1-5% by weight of the polymer and solvent, a biocompatible photo-initiator in an amount of about 0.1-5% by weight of the polymer and solvent, and a biocompatible light absorber, wherein the biocompatible light attenuator limits transmission of light that activates the biocompatible photo-initiator in a build direction of the additive manufacturing including by scattering at least some of the light in a second direction different from the build direction, and the biocompatible light absorber absorbs at least some of the light scattered in the second direction by the biocompatible light attenuator, wherein the light absorber is a benzophenone, an oxybenzone, an avobenzone, or combinations thereof.