Blood sample collector

• US 4,298,011 A
• Filed: 09/07/1979
• Issued: 11/03/1981
• Est. Priority Date: 09/07/1979
• Status: Expired due to Term

• Current Assignee: Chester F. Vanek, Henry H. Mangurten
• Original Assignee: Chester F. Vanek, Henry H. Mangurten
• Inventors: Vanek, Chester F., Mangurten, Henry H.
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/073,232
• Time in Patent Office: 788 Days
• Field of Search: 128/763-767, 128/771, 128/272.1, 128/DIG. 28, 128/276, 128/278, 435/294
• US Class Current: 600/576
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150099 by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
• CPC Class Codes: A61B 5/150251 Collection chamber divided into at least two compartments, e.g. for division of samples injection syringes having more than one chamber A61M5/19; syringes for injection of two or more media A61M5/2448, A61M5/284; sample preparation for further analysis A61B5/150755
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150534 Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
• 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
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means

Abstract

A collector of a blood sample from a body member comprising a hollow container which is closed at both ends and has a hypodermic needle projecting from one of the ends and extending into the interior of the container. An arcuate disc of a frangible, inert material is sealingly positioned within the container to divide it into two compartments, one containing a blood culturing medium, the other air. An elongated tube engages the interior end of the needle and passes through the disc into the air chamber. When the wall of the container is deflected inwardly to expel the air to create a negative pressure condition within the container, the disc is broken thus allowing the blood drawn into the container when the wall is released to mix with the medium.

Claims

1. A disposable blood sample collector comprising a cylindrical container having an integrally formed end wall at one end and an open other end, a closure closing the other open end, a disc of frangible inert material sealingly positioned within said container dividing said container into one portion as a chamber containing a blood culture medium and a second portion as an air chamber, a hypodermic needle extending through said end wall communicating the exterior of the container with said one portion, an elongated tube tightly fitted to said needle extension within said container and extending axially therewithin through said disc and communicating with said second portion, the container wall being flexible for deflection inwardly to expel air from said one portion and to return to cylindrical form when released, the needle adapted to engage the blood sample to draw the sample into said air chamber.

2. The structure of claim 1, said tube being marked with graduations to indicate the amount of blood collected.

3. The structure of claim 1, said disc being arcuate.

4. The structure of claim 1 wherein a neck extends outwardly from said end wall and surrounds a portion of said needle.

5. The structure of claim 4 wherein a protective, removable cap is fitted on said neck and encloses said needle.