Systems and methods for the expression of bodily fluid from an incision in the skin include devices which bear against the skin in a manner to retain the fluid adjacent the incision site and urge the fluid inwardly toward the incision. Systems utilize a constricting member, a bi-stable expression member,...http://www.google.es/patents/US7758518?utm_source=gb-gplus-sharePatente US7758518 - Devices and methods for expression of bodily fluids from an incision
Devices and methods for expression of bodily fluids from an incision