Ophthalmic brachytherapy systems and devices for application of beta radiation

A brachytherapy system for applying a dose of beta radiation to a target, said brachytherapy system comprising:

• (a) a handle having a distal end;
• and
• (b) a cap system attachable to the distal end of the handle, the cap system comprises:
• (i) a cylindrical base ring having a first end and a second end opposite the first end and an inner cavity therein for accepting a radionuclide brachytherapy source (RBS), the first end is open to allow for insertion of the RBS into the inner cavity;
• and
• (ii) a barrier surface sealing the second end of the base ring so as to prevent passing of the RBS through the second end;
• and a shaping component disposed on an interior surface of the barrier surface in the inner cavity of the base ring, the shaping component is shaped and constructed to regulate a dose of beta radiation delivered from the RBS to a target plane of a treatment area;
• wherein cap threads are disposed on the cylindrical base ring at the first end and handle threads are disposed on the distal end of the handle, wherein the cap threads are configured to temporarily engage the handle threads to secure the cap to the handle.

A brachytherapy system for applying a dose of beta radiation to a target, said brachytherapy system comprising:

• (a) a handle having a distal end;
• and
• (b) a cap system attachable to the distal end of the handle, the cap system comprises:
• (i) a cylindrical base ring having a first end and a second end opposite the first end and an inner cavity therein for accepting a radionuclide brachytherapy source (RBS), the first end is open to allow for insertion of the RBS into the inner cavity;
• and
• (ii) a barrier surface sealing the second end of the base ring so as to prevent passing of the RBS through the second end;
• and a shaping component disposed on an interior surface of the barrier surface in the inner cavity of the base ring, the shaping component is shaped and constructed to regulate a dose of beta radiation delivered from the RBS to a target plane of a treatment area;
• wherein the cap further comprises a tab that extends from the first end of the cylindrical base ring and the handle further comprises a tab lock adapted to accept the tab of the cap to secure the cap to the handle.