Extracorporeal blood processing methods and apparatus
AssigneeGambro AB
InventorsMuriel Keller, Marlene Bainbridge
Life of this patent
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Abstract
Improved extracorporeal blood processing methods and apparatus are disclosed. In one aspect of the invention, an extracorporeal method for the collection of platelets and red blood cells, and if desired plasma, is provided, wherein the collection of platelets and red blood cells may occur in differing time periods utilizing the same blood processing vessel. The flow of blood to the blood processing vessel and return of uncollected blood components may be provided via a single needle, wherein blood is removed and returned to a donor/patient during alternating blood removal and blood return submodes. Prior to red blood cell collection, a set-up phase may be carried out during which a predetermined hematocrit and AC ratio is established.
Claims21
A method for extracorporeal collection of blood components from a donor/patient, comprising:
- flowing blood into a blood processing vessel for continuous blood processing;
- separating platelets from said blood within said blood processing vessel;
- collecting at least a portion of said platelets in a platelet collection reservoir separate from said blood processing vessel;
- separating red blood cells from said blood within said blood processing vessel;
- collecting at least a portion of said separated red blood cells in a red blood cell collection reservoir separate from said blood processing vessel, wherein said platelet collection step is completed separate from said red blood cell collection step and wherein said platelet collection step and said red blood cell collection step each include a sub-step of removing uncollected blood components from said blood processing vessel for return of said uncollected blood components to said donor/patient.
A method for extracorporeal collection of blood components from a donor/patient comprising:
- removing blood from a donor/patient through a single needle;
- flowing said blood into a blood processing vessel for continuous blood processing;
- separating platelets from said blood within said blood processing vessel;
- collecting at least a portion of said platelets in a platelet collection reservoir separate from said blood processing vessel;
- separating red blood cells from said blood within said blood processing vessel;
- collecting at least a portion of said separated red blood cells in a red blood cell collection reservoir separate from said blood processing vessel, wherein said platelet collection step is completed separate from said red blood cell collection step and wherein said platelet collection step and said red blood cell collection step each include a sub-step of removing uncollected blood components from said blood processing vessel for return of said uncollected blood components to said donor/patient;
- and
- returning said uncollected blood components of said blood to said donor/patient through said single needle.
Dependencies are inferred from the claim text.