Sampling in blood collection
AssigneeNoble House Group Pty. Ltd.
InventorsJagmohanbir Singh Dillon, William Leonard Mobbs
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are disclosed whereby the initial flow of blood during blood collection is diverted to a sample pouch to trap the skin plug and to allow samples to be taken during subsequent blood collection to a normal blood bag. This is effected by connecting the needle line (106), the sample line (118) to the sample pouch (116) and the bag line (114) to the blood bag to a multi-port valve (110) that includes an actuator (120). During the procedure, the valve (110) may be attached to the arm (100) of the donor by means of a wrist-strap (112).
Claims21
A blood collection method wherein blood is drawn from a donor via a needle line and is conveyed to a collection bag via a bag line, the method comprising the steps of:
- moving an actuator in valve means connected between the needle line and the bag line to open a first connection causing initial blood flow to be directed from the needle line to a sample line while preventing access by blood in the needle line to the bag line, the sample line comprising or being connected to sample collection means,
- moving said actuator to close said first connection stopping said initial blood flow while continuing to prevent access to blood to the bag line, after a blood sample has been collected in said sample collection means, and
- moving said actuator to open a second connection between the needle line and the bag line to allow blood flow to the bag line while continuing to keep said first connection closed so as to prevent access by blood in the sample line to the needle line and to the bag line.
Apparatus suitable for use in taking a blood sample during a blood collection procedure in which blood is collected from a donor via a needle line and delivered to a collection bag via a bag line, the apparatus comprising:
- sample collection means,
- a sample line comprising said sample collection means or connected thereto,
- valve means having an inlet connected to the needle line for receiving blood from the donor, a first outlet connected to said sample line for conveying blood from the inlet to said sample collection means during sample collection, and a second outlet connected to the bag line for conveying blood from said inlet to the collection bag during blood collection, and
- valve actuator means having a first position for directing initial blood flow from the inlet to the first outlet to effect sample collection while preventing blood flow through said second outlet to the collection bag, and having a second position for directing initial blood flow from the inlet to the second outlet to effect blood collection while preventing blood flow through the first outlet.
A multi-position valve for blood collection, comprising:
- a body having an inlet, a first outlet and a second outlet, and
- actuator means moveable in sequence to (i) a first position wherein said first outlet is connected to said inlet but said second outlet is not connected to said inlet, (ii) an intermediate position wherein neither said first nor said second outlet is connected to said inlet, (iii) a second position wherein said second outlet is connected to said inlet but said first outlet is not connected to said inlet, and (iv) a third position wherein neither said first nor said second outlet is connected to the inlet.
Dependencies are inferred from the claim text.