Surgery – Respiratory method or device – Ozone or ion generation
Patent
1978-05-17
1981-06-09
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
A61F 1320
Patent
active
042718350
ABSTRACT:
A method and apparatus for contraception wherein an applicator houses a fluid-expansible, hydrophilic, tampon material in its unactivated, compressed state separate from a reservoir of spermicide or medicament. The applicator preferably includes a manually frangible portion of the spermicide reservoir or a fluid communication passage to bring the spermicide into contact with the fluid-expansible tampon material upon command prior to use. After activating by moistening, the spermicide-impregnated, expanded tampon can be readily inserted into a vagina by use of the applicator. Preferably, the tampon is made from a body of purposefully-compressed, memory-retentive, hydrophilic material having a resilience and a high coefficient of expansion when moistened to act as a barrier to the os uteri, to fill the vaginal fornices and absorb ejaculate. Various shapes of the tampon are disclosed, as are methods of making and using the invention.
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"Historical Perspectives on Intravaginal Contraception Sponges" by Kenneth K. Keown, Jr., M.A., Dept. of Surg. Health Sciences Center, Univ. Arizona, Mar. 1977, Contraception.
"Laboratory & Clinical Testing of an Intravaginal Contraceptive Collagen Sponge", Chvapil et al. Contraception, Jun. 1977, vol. 15, No. 6.
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"An Intravaginal Contraceptive Diaphragm Made of Collagen Sponge", Chvapil, Fertility & Sterility, vol. 27, No. 12 Dec. 1976.
Conn Shepard
Kushner Arnold
KCDP Corporation
Michell Robert W.
Rosenbaum C. F.
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