US 9,808,650 B2
Expandable brachytherapy device
Jack C. White, Alpharetta, GA (US); David Wesley Stephens, Cornelia, GA (US); Amit Prakash Govil, Gainesville, FL (US); Joshua J. Bergman, Myrtle Point, OR (US); Nathan Christopher Griffith, Lawrenceville, GA (US); and Kyle Kevin Millage, Flemington, NJ (US)
Assigned to Theragenics Corporation, Buford, GA (US)
Filed by THERAGENICS CORPORATION, Buford, GA (US)
Filed on Jul. 8, 2015, as Appl. No. 14/794,551.
Application 14/794,551 is a continuation of application No. 13/861,195, filed on Apr. 11, 2013.
Application 13/861,195 is a continuation of application No. 12/775,636, filed on May 7, 2010, granted, now 8,562,504, issued on Oct. 22, 2013.
Application 12/775,636 is a continuation of application No. 12/493,884, filed on Jun. 29, 2009, granted, now 8,690,746, issued on Apr. 8, 2014.
Application 12/493,884 is a continuation of application No. 11/266,994, filed on Nov. 4, 2005, granted, now 7,662,082, issued on Feb. 16, 2010.
Claims priority of provisional application 60/625,355, filed on Nov. 5, 2004.
Prior Publication US 2015/0306421 A1, Oct. 29, 2015
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/10 (2006.01); A61M 29/02 (2006.01)
CPC A61N 5/1015 (2013.01) [A61M 29/02 (2013.01); A61N 5/1007 (2013.01); A61N 2005/1008 (2013.01); A61N 2005/1018 (2013.01); A61N 2005/1024 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A brachytherapy device for treating tissue surrounding a body cavity within a patient, comprising:
a) a shaft having a proximal portion, a distal portion, a distal treatment portion proximate to the distal portion, and a longitudinal axis, the shaft having a plurality of flexible tubes defining off-set radiation delivery lumens radially off-set from the longitudinal axis, each of the plurality of off-set radiation delivery lumens being configured to receive a radiation source, and the plurality of off-set radiation delivery lumens are deformable into an arcuate shape;
b) an expandable member coupled to the shaft to define an expandable volume that surrounds the distal treatment portion, the expandable member being configured to provide spacing between said distal treatment portion and a treatment zone to reduce a dose gradient to said treatment zone treated by said distal treatment portion; and
c) a cap located on the distal portion of the shaft, and a distal end of each of the plurality of flexible tubes is secured in the cap.