05569287 is referenced by 195 patents and cites 4 patents.

A means for collecting and spotting a small amount of blood which comprises a cylinder, a piston, and a puncturing tip, wherein: the piston is inserted airtightly into one end of the cylinder; the puncturing tip is airtightly and exchangeably fitted onto another end of the cylinder; the puncturing tip comprises a blood conduit and a needle suspended by a spring within the blood conduit; the blood conduit has a volume which is equal to a volume of blood to be spotted to analytical means; and the needle is arranged to be pushed out from the puncturing tip by descent of the piston and then return back by ascent of the piston.

Title
Means for collecting and spotting small amount of blood
Application Number
8/353108
Publication Number
5569287
Application Date
December 9, 1994
Publication Date
October 29, 1996
Inventor
Masao Kitajima
Saitama
JP
Teruaki Koizumi
Saitama
JP
Hikaru Tsuruta
Saitama
JP
Shigeru Tezuka
Saitama
JP
Agent
McAulay Fisher Nissen Goldberg & Kiel
Assignee
Fuji Photo Film
JP
IPC
A61B 17/14
View Original Source