Passive safety i.v. blood collection catheter
AssigneeMmi AG
InventorDonald L. Millerd
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for a single, handheld device that provides for both insertion of a catheter and collection of a fluid. Some embodiments further include a needle that assists in the insertion of the catheter into a blood vessel, and which includes a retraction feature that protects the user from an accidental needle stick when the device is ready for disposal. Still further embodiments include a protective cover that prevents a user from accidentally being stuck by a second needle used for the introduction of the patient's blood into a collection device.
Claims21
An apparatus for collecting blood in a container and connecting to intravenous tubing, comprising:
- a main body including a collection cavity adapted and configured to receive therein an end of a readily separable container;
- a first hollow needle supported by said main body and having a first sharp tip, said first needle being adapted and configured for insertion of the first tip into a blood vessel;
- a second hollow needle attached to said main body and having a second sharp tip extending into the collection cavity;
- and
- a catheter assembly having a body and a hollow lumen and receiving said first needle within the lumen, the first sharp tip extending from the distal end of the lumen, the catheter body having a proximal end adapted and configured for attachment to the intravenous tubing, said catheter body including a one-way valve;
- wherein said first needle and said main body are readily separable from said catheter assembly, and said one-way valve prevents flow of blood through the lumen when said first needle is separated from the lumen.
An apparatus for collecting blood in a container and connecting to intravenous tubing, comprising:
- a main body defining an interior including a collection cavity adapted and configured to receive therein an end of a readily separable container;
- a first retractable hollow needle having a first sharp tip, said first needle being movable from a first extended position in which the first sharp tip is exterior to said main body for insertion into a blood vessel to a second retracted position in which the first sharp tip is within the interior;
- a second hollow needle attached to said main body and having a second sharp tip extending into the collection cavity, said second tip not extending outside of said main body;
- and
- a catheter assembly having a body and a hollow lumen and receiving said first needle within the lumen, the first sharp tip extending from the distal end of the lumen, the catheter body having a proximal end adapted and configured for attachment to the intravenous tubing;
- wherein said first needle and said main body are readily separable from said catheter assembly, said first needle automatically retracting to the second position in response to separating said first needle from said catheter assembly.
A method for obtaining a sample of blood in a container from the circulatory system of a biological unit, comprising:
- providing a hand-held device defining an interior including a collection cavity and including first and second hollow needles in fluid communication with each other and a catheter surrounding the first needle;
- inserting the first needle and the surrounding catheter into the circulatory system;
- placing the container in the collection cavity and inserting the second needle into the container;
- establishing fluid communication from the first needle to the container;
- separating the first needle and the catheter;
- and
- automatically retracting the first needle into the interior by said separating.
-49. (canceled)
Dependencies are inferred from the claim text.