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










Image Number 6 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
Bullet lens design for the dasal seeker
Process for producing a plasma protein-containing medicament with reduced concentration of citrate and metals
Epilation apparatus
Liquid-filled protein-phosphatidic acid capsule dispersions
UV liquid treatment system
Computerized information and display methods
Implementing state-of-the-art gate transistor, sidewall profile/angle control by tuning gate etch process recipe parameters
  Randomly Featured Patents
Method and device for adaptively estimating remaining video length in real time for user's convenience while viewing at least one program
Portable lamp
1,3,4-Oxadiazoles
Oil recovery process employing a non-ionic glucan in combination with clay flocculant
Telecommunications system with person/subscriber-associated identification
Method of and apparatus for eliminating pin holes
Method and system for performing timing analysis on a circuit
Wedge shim and follower block for a railcar articulated connector
System for determining web application vulnerabilities
Tailgator/sunshade protective cover