The present invention is directed to devices and methods of using a surgical drain, and more particularly to a surgical drain having at least one sensor for monitoring and/or recording the condition of the anatomical site or fluid emitted from the site where the surgical drain is placed. The invention...http://www.google.es/patents/US20040254432?utm_source=gb-gplus-sharePatente US20040254432 - Surgical drain with sensors for differential monitoring of internal condition
Surgical drain with sensors for differential monitoring of internal condition
