Surgery – Controlled release therapeutic device or system – Implanted dynamic device or system
Patent
1991-04-02
1992-08-11
Yasko, John D.
Surgery
Controlled release therapeutic device or system
Implanted dynamic device or system
604175, 604 8, 128DIG12, A61K 922, A61M 532
Patent
active
051375290
ABSTRACT:
A subcutaneously implantable injection port includes an elastomeric outer housing which encloses an easily assemblage multi-piece rigid base structure. An injection chamber is defined between an upper septum, formed integrally with the elastomeric outer housing, and the underlying base structure. The outer housing includes an upper dome and a lower reinforced sheet. The septum, which is formed integrally with the upper dome, includes a septum flange which is compressed, interiorly of the outer housing, between two base members. A filter extends across the injection chamber dividing it into upper and lower portions. A needle guard, provided by one of the base components, prevents contact between a needle inserted into the injection chamber and the filter. An outlet connector integrally formed with one of the base components extends through the outer housing for connecting a catheter or the like, with the lower portion of the injection chamber. In assembling the injection port, a first base member or rigid outer ring is placed adjacent to an interior surface of the elastomeric outer housing. A filter is placed within a second base member and held securely in place thereon by a third base member which provides the needle guard and fits within the second base member in an interference fit. This assembly is pushed into the first base member in a manner compressing the septum flange and creating a fluid-tight injection chamber.
REFERENCES:
patent: 3951147 (1976-04-01), Tucker et al.
patent: 4133441 (1979-01-01), Mittleman et al.
patent: 4496343 (1985-01-01), Prosl et al.
patent: 4543088 (1985-09-01), Bootman et al.
patent: 4557722 (1985-12-01), Harris
patent: 4559033 (1985-12-01), Stephen et al.
patent: 4573994 (1986-03-01), Fischell et al.
patent: 4634424 (1987-01-01), O'Boyle
patent: 4634427 (1987-01-01), Hannula et al.
patent: 4655765 (1987-04-01), Swift
patent: 4673394 (1987-06-01), Fenton, Jr. et al.
patent: 4681560 (1987-07-01), Schulte et al.
patent: 4685905 (1987-08-01), Jeanneret
patent: 4704103 (1987-11-01), Stober et al.
patent: 4718894 (1988-01-01), Lazorthes
patent: 4762517 (1988-08-01), McIntyre et al.
patent: 4767410 (1988-08-01), Moden et al.
patent: 4772270 (1988-09-01), Wiita et al.
patent: 4781680 (1988-11-01), Redmond et al.
patent: 4784646 (1988-11-01), Feingold
patent: 4904241 (1990-02-01), Bark
patent: 5085644 (1992-02-01), Watson et al.
Heindl Alfons
Leicht Edward C.
Licata Mark J.
Watson David A.
Cermak Adam J.
Pudenz-Schulte Medical Research Corporation
Yasko John D.
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