The Ancer Medical AR™ is a first of its kind, disposable brachytherapy applicator designed specifically for the treatment of anal and rectal cancers. The AR™ combines unique innovations with proven brachytherapy technology to bring a new Ancer to the question of anorectal cancer treatment.

Unique Device Dimensions

  • 2.3 cm uninflated insertion diameter for ease of placement
  • 8-10cm effective treatment zone allows treatment of entire rectum without repositioning

Dual Balloon construction

  • 3.5-4cm inner balloon inflated diameter creates consistent, repeatable source catheter positioning
  • Outer balloon creates protective spacing between source catheters and tissue, fully distending the rectum ensuring repeatable tumor coverage


  • Radio-opaque contrast markers visible under X-ray, CT and MRI ensure consistent device placement.


  • Contrast Markers and handle markings ensure depth and rotational consistency
  • Inner balloon design ensures precise, consistent source catheter positioning
  • Consistent fill volumes ensure repeatable tissue spacing.


  • Compliant outer balloon ensures optimal tissue separation and conformity around tumors
  • Non-compliant inner balloon supports 8 evenly spaced treatment catheters ensuring optimal positioning for surface dose control
  • Device construction and materials designed to take full advantage of MRI guided brachytherapy



AR Applicator Treatment

“The uniquely compliant design of the AR Applicator allows exophytic tumors to press closer to the source catheters than healthy tissue, resulting in the ability to deliver a very high dose to the tumor, maintaining superior dose coverage of the target volume while sparing healthy tissue.

For diffuse tumors, the target surface is kept away from the source catheters, resulting in a more homogenous dose distribution to the target, even for deep tumors. This design makes the AR the first rectal applicator ideally suited to treat both a solid exophytic mass and a diffuse tumor.

The AR applicator allows the prescription dose to envelop the tumor and the delivery of a very high dose to the tumor surface, all of this while sparing the healthy rectum and anal muscle, in a way that could not be achieved with external beam therapy.”