Embodiments of the present invention are directed towards instruments for investigation, screening, diagnosis, analysis or therapy and, more particularly, towards embodiments of one or more external rigidizable working channels along the instrument. In one embodiment, there is an apparatus that includes...http://www.google.fr/patents/US20060235457?utm_source=gb-gplus-shareBrevet US20060235457 - Instruments having a rigidizable external working channel
Instruments having a rigidizable external working channel
