Instrument and process for sampling cervical mucus and the like

Claim 1

An instrument for insertion into the vagina for the removal of a sample of cervical mucus fluid, comprising, in combination, a cylindrical tube curved and shaped for insertion within the vagina; a plunger coaxially slidable within the tube, the plunger terminating at its inner end in a tip carrying a surface to which mucus will adhere on contact and terminating at its outer end in a grip that enables insertion and withdrawal of the plunger into and from the tube, the plunger further being flexible to conform to the curve of the tube in successive positions of insertion and withdrawal; a substantially hemispherical cup connected at its bottom to the inner end of the tube, the bottom of the cup having an opening in communication with an opening at the inner end of the tube to provide communication between the respective interiors of the cup and the tube; and a flexible cover disposed over the cup and secured over the rim of the cup, the cover being provided with slot means normally closed to prevent the introduction of vaginal fluids during insertion of the tube but adapted to open by the cover being pushed inward into the cup in response to insertion of the cup over the cervix, the rim of the cup being proportioned to receive and circumscribe the cervix such that the plunger tip may pass through the opened slot means for contacting the surface of the plunger tip with cervical mucus from the central region of the cervix, whereby the pulling outward of the plunger grip effects removal of the plunger and its mucus-covered tip surface from the tube for the testing of the mucus.