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US 5,507,904 AGranted
Method of making a medical container port tangential to the container
AssigneeBaxter International Inc.
InventorsDavid P. Fisher, Allen R. Wons
Life of this patent
Estimating the term…
Abstract
A port is formed in a thermoplastic container wall by slitting the wall, inserting a thermoplastic tube through the slit, placing a mandrel in the tube, placing opposed dies defining a bore over the sheet and tube, and dielectrically heating the thermoplastic to fuse the tube and sheet. Preferably the bore defined by the dies is of a diameter slightly less than that of the tube, and has an enlarged central area which forms a thickened section of material over the slit.
Claims6
A method of forming a port in a thermoplastic sheet which forms a wall of a thermoplastic container comprising the steps of:
- providing a sheet of thermoplastic material,
- forming a slit in said sheet at a position spaced from the periphery thereof,
- inserting a hollow tube of thermoplastic material through said slit so that one end of said tube is located on each side of said sheet,
- heat fusing said sheet around said tube so that said tube defines an opening through said sheet and said tube is oriented tangentially to the surface of said sheet, and
- subsequently forming said sheet into said container.
2 more elements
Dependencies are inferred from the claim text.