Surgery – Respiratory method or device – Ozone or ion generation
Patent
1978-10-11
1980-08-05
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
A61F 546
Patent
active
042156912
ABSTRACT:
An intravaginal contraceptive system for the pre-programmed, unattended delivery of an antifertility steroid is disclosed. The system comprises (a) an antifertility steroid, (b) a delivery module comprising a reservoir for storing the steroid in an amount for execution of the program, a rate controller which maintains the rate of steroid delivered in a contraceptive effective amount throughout the life of the system, an energy source for transferring steroid from the reservoir to the vagina, and a portal for releasing the steroid from the module to the vagina, (c) a platform which integrates the module into a unit sized, shaped and adapted for insertion and retention in a vagina, and (d) a contraceptive program which provides for the controlled release of steroid to produce an antifertility effect over a prolonged period of time.
REFERENCES:
patent: 3545439 (1970-12-01), Duncan
patent: 3854480 (1974-12-01), Zaffaroni
patent: 3920805 (1975-11-01), Roseman
patent: 3967618 (1976-07-01), Zaffaroni
patent: 3991760 (1976-11-01), Drobish et al.
patent: 3993073 (1976-11-01), Zaffaroni
patent: 4012496 (1977-03-01), Schopflin et al.
Encyclopedia of Polymer Science & Technology, vol. 15, pp. 508-530, 1971, Interscience Publishers, Inc.
ALZA Corporation
Ciotti Thomas E.
Mandell Edward L.
Michell Robert W.
Rosenbaum C. F.
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