Precision Brachytherapy Device for Esophageal Cancer

Case ID:

This invention is a novel brachytherapy multiple radiation seed delivery device. The device was designed to deliver twice the amount of radiation dose to cancerous tissues via radiation seeds, for patients with esophageal cancer.

Brachytherapy is a form of radiation therapy in which small radioactive seeds are placed near cancerous tissue to minimize damage to healthy surrounding tissue. Brachytherapy is used primarily in prostate, cervical, breast, skin, and esophageal cancer. The purpose of this invention is the application to esophageal cancer.

Esophageal cancer is the seventh most common cancer worldwide and half of the candidates are not surgical candidates. For esophageal cancer, there are four main treatment options: surgery, chemotherapy, external beam radiation, and brachytherapy. Brachytherapy is the most non-invasive and precise procedure to remediate the cancer cells. Current brachytherapy devices create negative side effects, such as emitting radiation to healthy cells and not effectively being able to emit radiation to the full region of cancel cell area evenly. There is a need to find a more precise method to emit radiation to only cancerous cells to improve the quality of patient care. This will decrease the side effects caused by brachytherapy and drive down the cost and effort required to improve patient care.


  • Medical
  • Radiation therapy


  • Ease of use
  • Enhanced efficiency
  • Less expensive
  • One-time use
Patent Information:
Contact For More Information:
Katherine Kuhns
Licensing Manager, UAHS-TLA
The University of Arizona
Lead Inventor(s):
Danielle Gelb
Audrey Cohen
Hiram Olivas
Jacob Mapp
Ryan Zenhausern
Jesus Vargas Lopez
Nitika Thawani
Jennifer Barton