Biomedical and optogenetics applications need fiber-optic cannulas to deliver the light into the body tissue and/or to collect fluorescence or scattered light coming from the tissue.
When the Fiber-optic Cannula is fixed to the body and the fiber implanted, the light can be delivered to the tissue and the fluorescence or scatter from the tissue can be captured. In these experiments, it is imperative that the connection between the delivery fiber and the cannula is light, small and simple to connect and disconnect.
Purely electrical chronic implants for electrophysiology of the freely moving animals can use ferrule/sleeve or M3 type connection with minor modifications.
As the convergence of different techniques for cell monitoring like optogenetics, electrophysiology and fluorescence gathers speed, the cannula hybridization and fluid administration becomes imperative. For classification purposes we consider a cannula as port of entry that can be chronically implanted while injectors connect to and disconnect from cannulas. The simplest way to allow passage of liquids, optical and electrical signals in and out of the body is by using universal guiding cannula with plastic body in shape of an receptacle and a shaft.
To simplify the implantation of the cannula and maintain the precision, we have developed Stereotaxic Cannula Holder and Adapters for attaching our cannulas to the stereotaxic arm.