Düsseldorf, Germany — Nusil LLC presented a new in-situ cure LSR solution for implantable devices at the Compamed medical components fair in Düsseldorf. The Carpinteria, Calif.-based company claims to be the market leader in long-term implantable silicones that are molded and cured outside the body prior to implantation.
Its new solution involves dispensing uncured LSR components into the body via a double cartridge dispenser feeding with disposable syringes in five volume sizes between 5-75 ml.
The components mix with one another as they are injected and then cure at low temperature inside the body. This means implantation is less invasive than conventional pre-formed implants and the resulting implant can be customized to fit its location in the body.
Joel Wiliams, vice president and general manager, said "we can envisage, for example, rapid spinal vertebral repair, the material expanding to encompass available geometries."
The uncured LSR material components can be sterilized together with the dual-barrel cartridge dispenser by ethylene oxide (EtO) as the cartridge seals are permeable to EtO gas. This is the recommended method, as dry heat and autoclaving sterilization damage the packaging, adversely affecting workability, while gamma radiation and electron beam sterilization alternatives increase LSR cross-linking, significantly reducing flexibility.