ROBERT SCHENKEN, M.D.
Medical Practice at Floyd Curl Dr, San Antonio, TX

5372584, Dec 13, 1994

Jun 24, 1993

8/083133

John N. Zink - Mountain View CA
Chris Decaria - Sunnyvale CA
Jonathan Kagan - Minneapolis MN
Robert S. Schenken - San Antonio TX
Ricci Smelser - Monticello MN

Ovamed Corporation - Sunnyvale CA

A61M 3100, A61M 2900, A61M 532

604 55

An apparatus to establish access into the uterus and the fallopian tubes of a female for diagnostic or therapeutic procedures includes a cervical access catheter, an ostial access catheter insertable through the cervical access catheter, and a fallopian access catheter insertable through the ostial access catheter. The cervical access catheter incorporates a distally located intrauterine balloon which is inflatable after insertion into the uterus. The cervical access catheter also incorporates a cervical retention disk which can be slid into position against the anterior lip of the cervix to anchor the cervical access catheter into the cervical canal between the intrauterine balloon and the cervical disk. Once the cervical access catheter is properly anchored, the ostial access catheter is inserted through the cervical access catheter. The ostial access catheter has a guidable distal portion which, after the distal portion has passed through the cervical access catheter, can be positioned into the ostium of the fallopian tube.

5273527, Dec 28, 1993

May 12, 1992

7/881778

Richard A. Schatz - Rancho Santa Fe CA
John N. Zink - Mountain View CA
Robert S. Schenken - San Antonio TX
Brian M. Packard - Monticello MN
Jon Kagan - Minneapolis MN

Ovamed Corporation - Palo Alto CA

A61M 2500

604 43

A delivery catheter for introducing living matter into a body passageway or cavity of a female mammal comprises a hollow, flexible, dual lumen catheter having substantially tubular-shaped collection chamber for holding the living matter. An ejection port is formed adjacent to the distal end of the collection chamber and an actuator port is formed at its proximal end. A guide tube having a lumen, is positioned coaxially within the collection chamber with the respective distal and proximal ends of the guide tube and the collection chamber joined together in fluid-tight sealing engagements. In an alternate embodiment, the lumina are separated to create a guide wire lumen which is substantially parallel to a transfer lumen. Also, the distal end of the catheter is beveled to recess the opening of the guide wire lumen from the port of the collection chamber in the transfer lumen. In operation, the delivery catheter is inserted into the body passageway over a prepositioned guide wire.