Translate the given Spanish text to English

Other systems are disclosed.
Se describen otros sistemas.

The elastic fibers include a substituted cellulose additive.
Las fibras elásticas incluyen un aditivo de celulosa sustituido.

The use of the expandable prophylactic device is external and does not produce medical consequences or side effects.

El uso del profiláctico expandible es externo y no produce secuelas médicas o efectos secundarios.