04509504 is referenced by 104 patents and cites 11 patents.

A method for obstructing channels, ducts and other hollow spaces in human and animal bodies is disclosed comprising inserting a device having a portion thereof adapted to swell at least 20% in size when in contact with the fluid of the human or animal body, the device being in a shape matching and cooperating with the channel to be obstructed.

Title
Occlusion of body channels
Application Number
870595
Publication Number
4509504
Application Date
September 28, 1979
Publication Date
April 9, 1985
Inventor
Jan Olof Brundin
Lidingo
SE
Assignee
Medline
SE
IPC
A61B 17/00
View Original Source