Other

Wayne State University

Mark I Evans

Mitchell P Dombrowski

Frederick C Greenwood

A needle assembly which comprises a hollow needle, a stylet, and a spacer mechanism to control the position of the stylet within the needle.

Needle assembly with a movable stylet controlled by a spacer mechanism

A contraceptive device adapted to be worn by a female, and which serves to prevent the exchange of body fluids during intercourse, is disclosed. A preferred embodiment of the device has an elongate tubular sheath formed of thin, fluid impermeable material, the sheath having a closed inner end portion and an open outer end portion. A resilient inner ring is connected to the inner end portion for anchoring the same to the cervix of a wearer. An outer ring is connected to the open outer end portion for maintaining the outer end portion in an open configuration.

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West Bloomfield, MI, United States of America

Mark I Evans