Multiport equalization probe

• US 5,315,887 A
• Filed: 09/09/1991
• Issued: 05/31/1994
• Est. Priority Date: 06/23/1988
• Status: Expired due to Fees

• Current Assignee: Dade Behring, Inc. (Siemens AG)
• Original Assignee: Baxter Diagnostics Incorporated (Baxter International Inc.)
• Inventors: Heitel, Robert G.
• Primary Examiner(s): RAEVIS, ROBERT R
• Application Number:
  US07/756,735
• Time in Patent Office: 995 Days
• Field of Search: 73/864.01, 73/864.11, 73/864.21-864.25, 73/864.74, 73/864.86, 73/864.87, 422/100, 422/63-65, 422/67, 422/81, 606/30-34, 606/44, 138/111, 138/113, 138/115-117
• US Class Current: 73/864.11
• CPC Class Codes: G01N 2035/041 lifting items out of a rack for access
• CPC Class Codes: G01N 2035/0441 for samples
• CPC Class Codes: G01N 2035/1051 for transporting containers, e.g. retained by friction
• CPC Class Codes: G01N 2035/1086 Cylindrical, e.g. variable angle
• CPC Class Codes: G01N 35/1079 with means for piercing stoppers or septums
• CPC Class Codes: G01N 35/1095 for supplying the samples to flow-through analysers for a specific analyser see relevant groups, e.g. under G01N15/00, G01N21/00, G01N27/00, G01N30/00, H01J49/00

Abstract

A multiport equalization probe or needle includes an elongate body with a first and second end. The probe includes two or more lumens and an inlet and outlet for each lumen. It is closed at the first end which has a sharpened, conical configuration. Conduits provide separate connections between the lumens and a pump assembly which removes material through the lumens.

Claims

1. In a sampling and cleaning apparatus with a pump assembly which includes a pump and a plurality of conduits through which the pump moves material, a cleaning needle for extending into a sealed container through a closure of the container to remove material from the container, said needle including an elongate body having a first and second end, a plurality of lumens in the body, an inlet opening for each lumen, said openings being disposed in a side of the body proximate the first end of the body, and an outlet opening proximate or at the second end of the body for each lumen, said elongate body being closed and sharpened at the first end, said pump assembly conduits being in communication with the lumen outlets, said pump assembly including a conduit for each lumen, each conduit connecting the corresponding lumen to the pump and combining with the corresponding lumen to define a vacuum chamber for removing a predetermined material.

2. The cleaning needle of claim 1, wherein the elongate body has a generally cylindrical configuration.

3. The cleaning needle of claim 2, wherein the inlet openings are spaced apart substantially equal distances around the sides of the elongate body.

4. The cleaning needle of claim 3, wherein the elongate body includes an elongate tube and a sharpened head piece at the first end.

5. The cleaning needle of claim 4, wherein the sharpened first end has a conical configuration.

6. In a sampling and cleaning apparatus, a cleaning needle extending into a sealed container through a closure of the container, said needle comprising:

an elongate tube defining a bore;

a sharpened head piece member secured to one end of the tube, said head piece member closing a first end of the bore;

a fitting member secured to said tube at the second end of the bore, said fitting member extending into the bore and cooperating with the tube to define a plurality of elongate lumens;

said tube defining an inlet opening for each lumen;

said fitting member defining an outlet opening for each lumen.