System for withdrawal of blood
First Claim
1. A method for withdrawing blood from a patient comprising the steps of providing a tubing set comprising a mixing connector, a first tube adapted to be removably connected at one end to a catheter providing access to a patient'"'"'s circulatory system and connected to said mixing connector at its opposed end, a second tube adapted to be removably connected to a vacuum canister at one end and connected to said mixing connector at its opposite end, and a third tube adapted to be removably connected to a container of anticoagulant at one end and connected to said mixing connector at its opposite end, connecting said second tube to said canister, placing said first tube in fluid communication with the circulatory system of said patient, and applying a controlled vacuum to said canister.
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Accused Products
Abstract
The invention comprises a disposable tubing set (4) for connection to a rigid canister (2) that is maintained at a controlled reduced (vacuum) pressure. The set is used for collecting and anti-coagulating a patient'"'"'s blood for later re-infusion into the same patient
106 Citations
13 Claims
- 1. A method for withdrawing blood from a patient comprising the steps of providing a tubing set comprising a mixing connector, a first tube adapted to be removably connected at one end to a catheter providing access to a patient'"'"'s circulatory system and connected to said mixing connector at its opposed end, a second tube adapted to be removably connected to a vacuum canister at one end and connected to said mixing connector at its opposite end, and a third tube adapted to be removably connected to a container of anticoagulant at one end and connected to said mixing connector at its opposite end, connecting said second tube to said canister, placing said first tube in fluid communication with the circulatory system of said patient, and applying a controlled vacuum to said canister.
- 6. Apparatus for withdrawal of blood from a patient comprising a mixing connector, a first tube adapted to be connected at one end to a catheter providing access to a patient'"'"'s circulatory system and connected to said mixing connector at its opposed end, a second tube adapted to be connected to a vacuum canister at one end and connected to said mixing connector at its opposite end, and a third tube adapted to be connected to a container of anticoagulant at one end and connected to said mixing connector at its opposite end, wherein said mixing connector selectively admits fluids in said first and third tubes into said second tube simultaneously or prevents flow of fluids in said first or third tubes into said second tube, the internal diameter of said first tube is less than that of said second tube, and said second tube is longer than said first tube.
Specification