Apparatus for withdrawing arterial blood
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United States of America Patent
Stats
-
Feb 7, 1995
Grant Date -
N/A
app pub date -
Oct 22, 1993
filing date -
May 14, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for withdrawing arterial blood has a protective tube having a mounting member on one end of the tube. The mounting member includes a conical seat for the receipt of a hollow needle. A connecting member is mounted on the other end of the tube. First and second capillaries, having respective ends, arc positioned within the tube. The first capillary is arranged concentrically within the second capillary so that an annular space is formed between the first and the second capillaries. The first capillary projects beyond both ends of the second capillary, and one end of each of the first and the second capillaries is mounted in the mounting member. The first capillary is connectable to a hollow-needle, and the other end of each of the first and the second capillaries is mounted in the connecting member which provides communication between the first and the second capillaries.
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