Blood-collecting device

• US 6,511,439 B1
• Filed: 12/04/2000
• Issued: 01/28/2003
• Est. Priority Date: 12/07/1999
• Status: Expired due to Term

• Current Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Original Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Inventors: Ishiguro, Yasuhiro, Tabata, Yasushi, Koshimura, Yukio, Yoshino, Nobuo
• Primary Examiner(s): Bennett, Henry
• Assistant Examiner(s): Ferko, Kathryn
• Application Number:
  US09/727,681
• Time in Patent Office: 785 Days
• Field of Search: 600/573, 600/576, 600/578, 600/584, 600/577, 604/4.01, 604/6.05, 604/6.06, 604/6.07, 604/269
• US Class Current: 600/573
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150213 Venting means
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150244 Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes

Abstract

A blood-collecting device comprises an outer cylinder, a gasket slidable in the outer cylinder, and a plunger for the moving operation of the gasket. A ventilatable filter member is mounted on the tip end part of a hole formed in the gasket. The hole communicated with the outside via the hole of the plunger and the internal space. An anti-coagulation agent supply piece with an anti-coagulation agent such as a heparin supported on one side or both sides of a plate-like supporting member is provided in a space surrounded by the outer cylinder and the gasket. The tip end side of the anti-coagulation agent supply piece having a shape tapered toward the blood inlet opening, and the anti-coagulation agent supply piece maintains its posture by linear contact of a pair of sides facing with each other with the inner surface of the outer cylinder.

Claims

1. A blood-collecting device comprising:

an outer cylinder including a blood inlet opening;

a gasket slidable in said outer cylinder;

a plunger for moving operation of said gasket;

an anti-coagulation agent supply piece with an anti-coagulation agent supported on at least one side of a plate-shaped supporting member, provided in a space surrounded by the outer cylinder and the gasket; and

said anti-coagulation agent supply piece maintaining a posture in the space by contact of a part of said anti-coagulation agent supply piece with an inner surface of the outer cylinder.

2. The blood-collecting device according to claim 1, wherein said anti-coagulation agent supply piece has a shape tapered toward the blood inlet opening.

3. The blood-collecting device according to claim 2, wherein the tip end of the tapered shape of said anti-coagulation agent supply piece is pointed.

4. The blood-collecting device according to claim 1, wherein said anti-coagulation agent supply piece maintains the posture by linear contact of a rim part of said anti-coagulation agent supply piece with the inner surface of the outer cylinder.

5. The blood-collecting device according to claim 2, wherein said anti-coagulation agent supply piece maintains the posture by linear contact of a rim part of said anti-coagulation agent supply piece with the inner surface of the outer cylinder.

6. The blood-collecting device according to claim 1, wherein said anti-coagulation agent supply piece has a polygonal shape.

7. The blood-collecting device according to claim 1, wherein the anti-coagulation agent is supported by applying a solution of the anti-coagulation agent on the surface of the supporting member, and drying at an ordinary temperature or higher.

8. The blood-collecting device according to claim 1, wherein said anti-coagulation agent supply piece is disposed in a direction substantially parallel with the longitudinal direction of the outer cylinder.

9. The blood-collecting device according to claim 1, wherein a ventilation part is formed in said gasket and said plunger.

10. The blood-collecting device according to claim 1, wherein a gas permeable filter member preventing permeation of a liquid is provided in said gasket.

11. The blood-collecting device according to claim 1, wherein the supporting member is made of a material insoluble with respect to blood.

12. The blood-collecting device according to claim 1, wherein minute ruggedness is formed on the surface of the supporting member in contact with the anti-coagulation agent.

13. A medical device comprising a blood-collecting device, said blood-collecting device including:

an outer cylinder including a blood inlet opening;

a gasket slidable in said outer cylinder;

a plunger for moving operation of said gasket;

an anti-coagulation agent supply piece with an anti-coagulation agent supported on at least one side of a plate-shaped supporting member, provided in a space surrounded by the outer cylinder and the gasket;

said anti-coagulation agent supply piece maintaining a posture in the space by contact of a part of said anti-coagulation agent supply piece with an inner surface of the outer cylinder; and

wherein said blood-collecting device is wrapped in a plastic film and applied with sterilization.