Joseph A Lane

US Patent:

6494824, Dec 17, 2002

Filed:

Feb 20, 1999

Appl. No.:

09/253310

Inventors:

Marc G. Apple - Fort Wayne IN 47906
Brian L. Bates - Bloomington IN
John A. DeFord - Bloomington IN
Neal E. Fearnot - West Lafayette IN
James D. Purdy - Lafayette IN
Joseph P. Lane - Bloomington IN
Delbert C. Miller - Bloomington IN
Gregory A. Frankland - Unionville IN

Assignee:

Marc G. Apple - Ft. Wayne IN

International Classification:

A61N 0500

US Classification:

600 3

Abstract:

A catheter apparatus and radiation dosimetry unit indicator for delivery of a prescribed radiation dose to a patient. A radiotherapy source vial ( ) includes a fluid container ( ) of radioactive fluid with a seal ( ) disposed about the container. Seal ( ) is moveable with respect to container ( ) to change the contained volume therein. A radioactive fluid transport site ( ) is in communication with the contained volume and with an exterior ( ) of the container ( ), and may include a septum ( ) or a valve ( ). An engagement mechanism ( ) is connectable to an external control mechanism ( ) whereby the contained volume in the radioactive fluid container can be decreased and increased by actuation of the external control mechanism.