| 摘要 |
<p>The invention relates to a method for manufacturing an artificial elastic implant for restorative and reconstructive surgery, comprising two casting steps performed in a casting mold (2, 3). The mold has at least a cover (1) that is optically and UV transparent. In a first step, a first layer of a first photo-curable material or of a second photo-curable material is cast while forming a meniscus (4). Using one of two photo masks (5), the mold is irradiated with UV light to cure the first layer. In a second step, a second layer of either the first or the second photo-curable material is cast onto the cured first layer while forming a meniscus. After irradiating the mold again with ultraviolet light, unhardened photo-curable material is removed from the product by dissolving in a suitable solvent. After additionally irradiating the product with UV light, the product is soaked, separated from the mold, placed in isopropyl alcohol for 3 to 24 hours and then vacuum dried. The first photo-curable material is a composition comprising:
- 25 - 40 wt.-% benzyl methacrylate
- 50 - 70 wt.-% oligourethane methacrylate
- 1 - 5 wt.-% methacrylic acid
- 1 - 5 wt.-% octyl methacrylate. The second photo-curable material is a composition comprising:
- 20 - 30 wt.-% phenoxyethyl methacrylate
- 20 - 30 wt.-% oligourethane methacrylate 1000F
- 35 - 45 - wt.-% oligourethane methacrylate 5000F
- 1 - 5 wt.-% methacrylic acid
- 1 - 5 wt.-% ethylene glycol monomethacrylate.</p> |
