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 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) and 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;
- (g) recovering the platelet-rich concentrate separated in (e) and remaining in said container;
- and
- wherein displacing said red blood cells, platelet-rich plasma, and platelet-poor plasma is carried out automatically in centrifuge equipment having facilities for opening said ports.
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) opening a valve positioned within the first port;
- (c) transferring said blood through said first port into said elongated container by moving the plunger away from the first port;
- (d) closing the valve;
- (e) centrifuging said blood in said container and separating said blood into platelet-poor plasma, red blood cells, and platelet-rich concentrate;
- (f) displacing the red blood cells separated in (e) 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;
- (g) removing said waste bag of (f) 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
- (h) recovering the platelet-rich concentrate separated in (e) and remaining in said container,
- wherein displacing said red blood cells, platelet-rich plasma, and platelet-poor plasma is carried out automatically in centrifuge equipment having facilities for opening said ports.
Dependencies are inferred from the claim text.