Surgery – Blood drawn and replaced or treated and returned to body – Constituent removed from blood and remainder returned to body
Reexamination Certificate
1999-09-03
2001-12-04
Kim, John (Department: 1723)
Surgery
Blood drawn and replaced or treated and returned to body
Constituent removed from blood and remainder returned to body
C604S006040, C604S006100, C604S006110, C210S085000, C210S102000, C210S141000, C210S143000, C210S416100
Reexamination Certificate
active
06325775
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to systems and methods for processing and collecting blood, blood constituents, or other suspensions of cellular material.
BACKGROUND OF THE INVENTION
Today people routinely separate whole blood, usually by centrifugation, into its various therapeutic components, such as red blood cells, platelets, and plasma.
Conventional blood processing methods use durable centrifuge equipment in association with single use, sterile processing systems, typically made of plastic. The operator loads the disposable systems upon the centrifuge before processing and removes them afterwards.
Conventional blood centrifuges are of a size that does not permit easy transport between collection sites. Furthermore, loading and unloading operations can sometimes be time consuming and tedious.
In addition, a need exists for further improved systems and methods for collecting blood components in a way that lends itself to use in high volume, on line blood collection environments, where higher yields of critically needed cellular blood components, like plasma, red blood cells, and platelets, can be realized in reasonable short processing times.
The operational and performance demands upon such fluid processing systems become more complex and sophisticated, even as the demand for smaller and more portable systems intensifies. The need therefore exists for automated blood processing controllers that can gather and generate more detailed information and control signals to aid the operator in maximizing processing and separation efficiencies.
SUMMARY OF THE INVENTION
The invention provides systems and methods for processing blood and blood constituents that lend themselves to portable, flexible processing platforms equipped with straightforward and accurate control functions.
One aspect of the invention provides a blood processing device that is self-contained within a case, which sized to enable hand transport. Self-contained in the case is a blood separation device, which, for example, can comprise a centrifuge. A controller is also self-contained in the case. The controller includes a control program for carrying out one or more blood processing procedures.
The device is used in association with a fluid processing system. The fluid processing system includes a centralized cassette containing preformed, fluid pressure actuated pump stations, preformed fluid flow paths, and preformed, fluid pressure actuated valves in the fluid flow paths. The device includes support elements to mount the fluid processing system in the case in communication with the blood separation device. The support elements include a fluid pressure actuator to hold the cassette and to selectively apply fluid pressure force to the valves and pump stations in response to the control program. The control program thereby operates the cassette to convey blood to and from the blood separation device through the fluid processing system.
In one embodiment, the case includes a lid that opens to expose the support elements for use and closes to cover the support elements and enable hand transport. The support elements are mounted on the base and on the lid.
In one embodiment, the fluid pressure actuator is programmable by the control program to place designated fluid flow paths in flow communication with designed pump stations to carry out a blood processing procedure. The controller has a first selectable control program to direct the fluid pressure actuator to apply fluid pressure force to the valves and pump stations to perform a first blood separation procedure. The controller also has a second selectable control program to direct the fluid pressure actuator to apply fluid pressure force to the valves and pump stations to perform a second blood separation procedure different than the first blood separation procedure. In this way, the same fluid processing system usable in association with the device can accommodate different blood processing procedures.
In one embodiment, the fluid pressure applied by the actuator comprises positive and negative pneumatic pressures.
Other features and advantages of the inventions are set forth in the following specification and attached drawings.
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Brochure Therakos System (Circa 1998).
Kendall James W
Thom Sandra
Westberg Tom
Baxter International Inc.
Kim John
Price Bradford R. L.
Rockwell Amy L. H.
Ryan Daniel D.
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