COLUMN FOR TESTING BIOLOGICAL FLUIDS

• US 3,567,029 A
• Filed: 08/26/1969
• Issued: 03/02/1971
• Est. Priority Date: 08/26/1969
• Status: Expired due to Term

• Current Assignee: Quame, Babington A.
• Original Assignee: Quame, Babington A.
• Inventors: Quame, Babington A.
• Application Number:
  US04/853,066
• Time in Patent Office: 553 Days
• US Class Current: 210/249
• CPC Class Codes: G01N 33/493 urine

Abstract

A column for testing biological fluids. The column includes an upper receiving container for receiving the fluid which is to be tested. The bottom end of the fluid receiving container is open and situated just beneath a fritted glass disc on which there is a body of resin particles, and on the latter body of resin particles there is a body of purified cellulose, so that in this way there will result a maximum adsorption of drugs together with the resin from a biological fluid. Beneath the fluid receiving container is a filtration container having at its upper region an opening communicating with the outer atmosphere so as to release any pressure which otherwise would build up within the filtration container. Within the filtration container is a filtering aid covered with a phase separating paper. Beneath the filtration container, which has a bottom end, is a collecting container which will collect clear organic solvent with pure drugs contained therein, in the case where the column is used for drug abuse testing purposes. The top open end of the receiving container and the bottom open end of the filtration container can be covered with removable closing caps so that the column can be conveniently sent through the mails, for example.

Claims

2. The combination of claim 1 and wherein said fluid-permeable disc is fritted glass.

3. The combination of claim 1 and wherein said absorbing body comprises particles of amberlite AXD-2 resin held in place by a packing of cellulose.

4. The combination of claim 1 and wherein a pair of closure caps are removably mounted on the top open end of said fluid receiving container and on the bottom open end of said filtration container for closing the latter ends so that the containers may be transported, through the mails, for example, with a sample therein to be tested.

5. The combination of claim 1, and wherein said containers are formed of tubular bodies threadedly connected to one another with each container having an upper tubular body of a relatively large diameter and a lower tubular body of a relatively small diameter.

6. The combination of claim 5, and wherein the lower tubular body of small diameter of said upper fluid receiving container extends into the upper region of the upper tubular body of large diameter of the filtration container, a ring surrounding the lower region of said upper container and connected with the top of the lower filtration container, and the latter having at its upper region a wall portion formed with said opening providing communication between the interior of said filtration container and the exterior to prevent build up of pressure therein.

7. The combination of claim 6 and wherein a stand is provided for supporting said column in an upright position, and a collecting container carried by the stand beneath the filtration container to receive liquid therefrom.