Blood sampling device

• US 6,269,704 B1
• Filed: 11/06/2000
• Issued: 08/07/2001
• Est. Priority Date: 01/12/1999
• Status: Expired due to Fees

• Current Assignee: Elcam Plastic, Elcam+Plastic Cooperative Agriculture Association Limited
• Original Assignee: Elcam+Plastic Cooperative Agriculture Association Limited
• Inventors: Ziv, David, Gil, Tomer
• Primary Examiner(s): Larkin, Daniel S.
• Assistant Examiner(s): Garber, Charles D.
• Application Number:
  US09/623,918
• Time in Patent Office: 274 Days
• Field of Search: 738/638.1, 738/638.4, 738/647.4, 600/573, 600/578, 604/32, 604/33, 604/248, 604/249
• US Class Current: 73/863.84
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150221 Valves
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00
• CPC Class Codes: A61B 5/155 Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals devices loaded with multiple lancets simultaneously A61B5/15146
• CPC Class Codes: A61M 2039/0202 for taking samples
• CPC Class Codes: A61M 39/02 Access sites

Abstract

A liquid sampling device (10) comprising a housing (12) defining a confined volume (90) and fitted with an inlet port (22) and an outlet port (18) and a drawing member (30) formed with a conduit (38) and being displaceable between a flow position in which the conduit communicates between the inlet port and the outlet port, and a drawing position in which communication between the inlet port and the outlet port is interfered and wherein upon displacing the drawing member (3) into the drawing position, liquid is drawn into the confined volume (10) via the outlet port (18).

Claims

1. A liquid sampling device comprising:

a housing 12 defining a confined volume 90 and fitted with an inlet port 22 and an outlet port 18;

a drawing member 30 formed with a conduit 38 and being displaceable between a flow position in which said conduit 38 communicates between the inlet port 22 and the outlet port 18, and a drawing position in which communication between the inlet port 22 and the outlet port 18 is interfered and wherein upon displacing the drawing member 40 into the drawing position, liquid is drawn into the confined volume 90 via said outlet port 18.

2. A liquid sampling device according to claim 1, further comprising:

a sealing member 46 displaceable between a first position corresponding with the flow and drawing positions of the drawing member 30, and a second position in which the confined volume is sealingly disconnected from the outlet port 18.

3. A liquid sampling device according to claim 1, wherein a sampling port 26 is fitted on a tube connected to the outlet port 18.

4. A liquid sampling device according to claim 2, wherein the housing 12 comprises a cylindrical space 34;

the drawing member 30 and the sealing member 46 each have a sector-like shape snugly received within the housing 12, the volume of both said drawing member 30 and said sealing member 46 together is less than the volume of the cylindrical space 34.

5. A liquid sampling device according to claim 4, wherein the drawing member 30 and the sealing member 46 are rotatably displaceable within the housing 12 about a common axis coaxial with an axis of the cylindrical space 34 of the housing 12.

6. A liquid sampling device according to claim 4, further comprising a displacing element 56 extending from said housing 12, for displacing the drawing member 30 between its flow position and the drawing position.

7. A liquid sampling device according to claim 6, wherein the displacing element 56 is articulated or integrally formed with the drawing member 30.

8. A liquid sampling device according to claim 4, wherein a retaining arrangement 92:

94 is provided between the housing 12 and either or both of the sealing member 46 and the drawing member 30, for retaining either or both in either of their positions.

9. A liquid sampling device according to claim 8, wherein the retaining arrangement is a snapping-type engagement 92:

94 formed between a wall of the housing 12 and a respective wall portion of either or both of the sealing member 46 and the drawing member 30.

10. A liquid sampling device according to claim 1, wherein the housing 12 comprises an airing port 27 for venting the confined volume 90 during displacement of the drawing member 30 between its respective positions.

11. A liquid sampling device according to claim 1, wherein the inlet port 22 and the outlet port 18 are coaxially aligned.

12. A liquid sampling device according to claim 1, wherein an axis of the conduit within the drawing member 30 extends at a plane essentially perpendicular to a plane of displacement of the drawing member 30.

13. A liquid sampling device according to claim 4, wherein displacing the sealing member 46 between its first and second positions is obtained by displacing the drawing member 30.

14. A liquid sampling device according to claim 4, wherein at the flow position of the drawing member 30 a first side wall 80 thereof is flush with a first side wall 82 of the sealing member 46;

and at the first and second positions of the sealing member 46 a second side wall thereof 86 is flush with a second side wall 84 of the drawing member 30.

15. A liquid sampling device according to claim 6, wherein the displacing element 56 is snappingly articulated to the housing 12.