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US 2004/0167004 A1Published application
Platelet concentration syringe kit
AssigneeBiomet 3i, LLC
InventorsGlen E. Jorgensen, Bruce Berckmans III
Life of this patent
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Abstract
A single-use system for separating blood and producing platelet concentrates includes an elongated container for receiving blood from a patient. The container has a movable plunger mounted within the blood container for expressing blood fractions separated during centrifugation of the container through a first port mounted at one end of said container, a second port mounted on the plunger, and a third port mounted on a plunger rod attached to the plunger.
Claims7
A blood separation kit comprising:
- (a) an elongated hollow container having a first end and a second end and comprising a first port mounted at said first end for admitting liquid to or expelling liquid from said container, said port being closed unless opened by a fitting attached to said port;
- (b) a plunger movably disposed within and engaging the walls of said container of (a), said plunger comprising
- (1) a passageway through said plunger communicating with the interior of said container of (a), and
- (2) a second port for expelling liquid mounted within said passageway of (b)(1), said port being closed unless opened by a fitting attached to said port;
- and
- (c) a plunger rod having a passageway therein and adapted to engage said plunger of (b), said plunger rod comprising
- (1) means for engaging said plunger to provide communication with the inside of the container of (a) via the passageway in the plunger of (b) to the passageway in said plunger rod,
- (2) a third port for expelling liquid mounted at the end of said plunger rod opposite said means for engaging said plunger, said third port being closed unless opened by a fitting attached to said third port.
5 more elements
A method of collecting and separating a patient's blood and recovering a platelet-rich concentrate comprising:
- (a) collecting the patient's blood using a needle set comprising a hollow needle having attached tubing and a fitting adapted to engage a first port in an elongated container fitted with a movable plunger having a second port therein;
- (b) transferring said blood through said first port into said elongated container;
- (c) centrifuging said blood in said container and separating said blood into platelet-rich plasma and red blood cells;
- (d) displacing the red blood cells separated in (c) from said container by moving said plunger towards said first port and expelling said red blood cells into a waste bag through tubing attached to said first port;
- (e) removing said waste bag of (d) centrifuging said platelet-rich plasma remaining in said container and separating a platelet-rich concentrate from a platelet-poor plasma;
- (f) attaching a hollow plunger rod having a third port therein to said plunger and displacing the platelet-poor plasma separated in (e) from said container by moving said plunger towards said first port and expelling said platelet-poor plasma through said second port of said plunger and said third port of said plunger rod into a waste bag attached to the plunger rod;
- and
- (g) recovering the platelet-rich concentrate separated in (e) and remaining in said container.
5 more elements
A method of collecting and separating a patient's blood and recovering a platelet-rich concentrate comprising:
- (a) collecting the patient's blood using a needle set comprising a hollow needle having attached tubing and a fitting adapted to engage a first port in an elongated container fitted with a movable plunger having a second port therein;
- (b) transferring said blood through said first port into said elongated container;
- (c) centrifuging said blood in said container and separating said blood into platelet-poor plasma, red blood cells, and platelet-rich concentrate;
- (d) displacing the red blood cells separated in (c) from said container by moving said plunger towards said first port and expelling said red blood cells into a waste bag through tubing attached to said first port;
- (e) removing said waste bag of (d) and attaching a hollow plunger rod having a third port therein to said plunger and displacing the platelet-poor plasma separated in (c) from said container by moving said plunger toward said first port and expelling said platelet-poor plasma through said second port of said plunger and said third port of said plunger rod into a waste bag attached to the plunger rod;
- and
- (f) recovering the platelet-rich concentrate separated in (c) and remaining in said container.
4 more elements
Dependencies are inferred from the claim text.