Sample probe guide support

• US 20040194562A1
• Filed: 01/08/2004
• Published: 10/07/2004
• Est. Priority Date: 01/13/2003
• Status: Abandoned Application

• Current Assignee: Pfizer Inc.
• Original Assignee: Pfizer Inc.
• Inventors: Smith, Donald J., Banks, J. Fred, Brockman, Adam H.
• Application Number:
  US10/755,063
• Publication Number:
  US 20040194562A1
• Time in Patent Office: Days
• US Class Current: 73/864.24
• CPC Class Codes: G01N 35/1004 Cleaning sample transfer devices

Abstract

A liquid sample handler guide support has a support plate fixedly mounted to the liquid sample handler sample probe support head, which support head is movable between sample aspirating positions, and which support plate has a hole, and a plastic cylindrical guide having a hole is mounted in the plate hole. The sample probe is slidably disposed in the guide during the liquid sample handler operations. A rinse cup is reciprocally movable to a probe rinse position below the guide for insertion of the probe tip for rinsing.

Claims

1. A liquid sample handler probe guide support comprising:

a plate, and means for mounting said plate to a liquid sample handler sample probe support head; and

a guide formed with a through-hole, said guide hole being sized to slidably receive a sample probe, and means for supportably mounting said guide on said plate;

whereby the sample probe is slidably disposed in the guide.

2. The probe guide support of claim 1, wherein the guide comprises a vertically disposed cylinder.

3. The probe guide support of claim 1, said plate being formed with an aperture, said plate aperture and said guide through-hole being in alignment so that the probe may be slidably and simultaneously disposed in the guide and the plate.

4. The probe guide support of claim 3, said guide and plate being cooperatively formed for press fitting the guide into the plate aperture.

5. In combination:

a liquid sample probe;

a liquid sample handler having a movable support head, said probe being operably mounted on said support head so as to be reciprocally movable in relation to said support head; and

a probe guide support assembly comprising a plate, and means for mounting said plate to the support head, and a guide being formed with a through-hole sized to slidably receive the probe, and means for mounting said guide to said plate;

whereby the probe is reciprocally slidable in the guide in liquid sample handler operations.

6. The combination of claim 5, further comprising a probe rinse cup, and means for moving the rinse cup wherein the rinse cup is disposed below the probe, whereby the probe slides through the guide hole into the rinse cup for rinsing the probe.

7. The combination of claim 6, further comprising means for mounting the rinse cup to the support head, and further comprising means for reciprocally moving the rinse cup for selectively positioning the rinse cup under the probe for rinsing the probe and away from the probe to clear the probe so that the probe is extended for aspirating or dispensing a sample.

8. The combination of claim 7, said probe having a first end for aspirating the sample, said probe having a second end, and dispensing means disposed at the second end of the probe for dispensing the sample.

9. The combination of claim 8, said dispensing means comprising a valve for dispensing a predetermined measured liquid sample through the second end, or back through the first end.

10. The combination of claim 9, said valve means comprising a multi-port injector valve.

11. The combination of claim 5, said guide comprising a one-piece plastic construction.

12. The combination of claim 5, said guide comprising a cylinder, said cylinder having an upper cylindrical body and a lower cylindrical body, said plate having an aperture, and said lower cylindrical body being disposed in said plate aperture.

13. The combination of claim 12, said guide comprising a one-piece plastic construction.

14. The combination of claim 13, further comprising a probe rinse cup, and means for moving the rinse cup, wherein the rinse cup is disposed below the guide through-hole, whereby the probe slides through the passageway into the rinse cup.

15. The combination of claim 14, further comprising means for mounting the rinse cup to the support head, and means for reciprocally moving the rinse cup for selective positioning under the guide through-hole.