Appeal No. 97-4459 Page 10
Application No. 08/421,063
and a cylinder chamber 13 having a volume which may be changed
by displacing the piston 11, (2) a standard needle 15, and (3)
a filtering unit 25 having a housing 26 with an outwardly
extending socket 27 for receiving the cone 14 of the syringe
cylinder 10 and an oppositely directed cone 28 for mounting
the needle 15 thereon. A plate or disc-like filtering member
17 is arranged within the housing 26 so as to be freely
movable between a first position in which the filtering member
is in abutting engagement with an inner annular shoulder
formed in the housing 26 (Figure 5) and an open position in
which the filtering member is in abutting engagement with
spacer members 29 projecting into the housing from an inner
wall part adjacent to the socket 27 (Figure 4).
Suzuki discloses a needle assembly for evacuated blood
collection tubes or containers. As shown in Figure 15, the
needle assembly includes (1) a needle 15, (2) a translucent or
transparent resinous cover or support 16, and (3) a rubber cap
18. A hole 14 is made at the middle portion of the needle 15
and a middle hollow portion 17 is provided in the support 16.
Suzuki teaches (column 6, lines 16-19) that when the end tip
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Last modified: November 3, 2007