Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Wound drainage device










Image Number 2 for United States Patent #4578060.

A device for removing fluids from a wound includes a housing and a resilient bellows inside the housing. The bellows can be collapsed and retained in a collapsed or activated state. Upon release from its activated state, the bellows is expanded so as to create a negative pressure therein whereupon fluids are automatically drawn into and collected within the bellows. Preferably the bellows is expanded by a variable force ribbon spring so that the resultant or combined restoring force provided by the resilient bellows and the variable force ribbon spring allows for the creation of a substantially constant level of negative pressure within the bellows so as to provide for a substantially constant level of suction of the device throughout the range of evacuation of fluids therein. The housing is preferably transparent with graduations provided thereon permitting the visible inspection and measurement of the fluids collected therein. A method for operating the device is also disclosed.








 
 
  Recently Added Patents
System and method for seamlessly increasing download throughput
Tuning peg for a stringed instrument
Use of natriuretic peptide for treating heart failure
Produce container and lid assembly
Footwear
Compositions and methods for concentrating and depleting microorganisms
Simultaneous image distribution and archiving
  Randomly Featured Patents
Liquid injection molding machine for utilizing silicone compositions
Composite corrugated electrical cables
Electroacoustic transducer
Apparatus of a spinning machine for condensing a fiber strand
Portable communicator
Container
Selective opening of five and six membered rings
Fluorescent isoindoline pigments
Device and method of recording information on an optical disc
Silicon nitride sintered body and manufacturing method thereof, member for molten metal, member for hot working, and member for digging