04099528 is referenced by 92 patents and cites 6 patents.

A double lumen cannula mounted upon a hub and constructed to penetrate the human vascular system, the cannula assembly having an interior cannula and an exterior cannula spaced from the interior cannula. A bushing is normally situated in the space between the interior and exterior cannula which bushing facilitates venipuncture without damanging the tissue. After venipuncture, the bushing is removable from the space between the interior and exterior cannulae by withdrawing the bushing from the cannulae through the hub.

Title
Double lumen cannula
Application Number
5/769591
Publication Number
4099528
Application Date
February 17, 1977
Publication Date
July 11, 1978
Inventor
Gordon S Reynolds
Bountiful
UT, US
Karl A Pannier Jr
Salt Lake City
UT, US
James L Sorenson
Salt Lake City
UT, US
Agent
J Winslow Young
H Ross Workman
Assignee
Sorenson Research Co
UT, US
IPC
A61M 25/00
A61M 5/00
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