Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent
1974-06-17
1976-07-06
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
128214D, 156 82, 156304, 264248, B29C 2700
Patent
active
039681955
ABSTRACT:
A method for making a sterile connection between fluid passage means such as a port structure for passing sterile fluids or other biological material, is disclosed. The port structure includes a flexible sleeve having a rigid thermoplastic tube secured therein. The outer surface of the sleeve has greater thermoplastic properties than the inner surface, enabling the sleeve to be heat sealed to the fluid passage means without sealing off the inner surface. The rigid tube has a free end extending outside the sleeve, having a thermoplastic diaphragm which seals off the free end. When a sterile connection between two fluid passage means incorporating the port structure is desired, the free ends of each rigid tube are aligned and softened, and each thermoplastic diaphragm is opened. The free ends of the rigid tubes are then brought into contact and held in position under a slight pressure while the thermoplastic tubes cool and solidify, thereby creating a permanent connection.
REFERENCES:
patent: 1701541 (1929-02-01), Ray
patent: 2839788 (1958-06-01), Dembiak
patent: 2950716 (1960-08-01), Bellamy, Jr. et al.
patent: 3404051 (1968-10-01), Hall
patent: 3467095 (1969-09-01), Ross
patent: 3616024 (1971-10-01), Windle
Balhoff T. E.
Brinks Henry L.
Jacover Jerold A.
White Robert F.
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