Methods and apparatus for intraocular brachytherapy
First Claim
Patent Images
1. A device for local, directional delivery of radiation to intraocular target tissue comprising:
- a radiation source;
a substantially rigid cannula sized for intraocular insertion into an eye and having a proximal end and a distal end for receiving the radiation source comprising a tubular member with at least one lumen and having a radiation window at its distal end for providing a desired radiation dose profile when the radiation source is received therein, the distal end of the cannula including a cover covering the window with a fluid tight seal so as to prevent contact of body fluids with the radiation source; and
a housing to which the proximal end of the cannula is secured for moving the radiation source within the lumen of the cannula between a retracted proximal position interior of the housing and a treatment position at the distal end of the cannula, the housing comprising an advancement mechanism operatively coupled to the radiation source, the advancement mechanism being movable to move the radiation source between the retracted position and the treatment position.
10 Assignments
0 Petitions
Accused Products
Abstract
A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.
323 Citations
14 Claims
-
1. A device for local, directional delivery of radiation to intraocular target tissue comprising:
-
a radiation source; a substantially rigid cannula sized for intraocular insertion into an eye and having a proximal end and a distal end for receiving the radiation source comprising a tubular member with at least one lumen and having a radiation window at its distal end for providing a desired radiation dose profile when the radiation source is received therein, the distal end of the cannula including a cover covering the window with a fluid tight seal so as to prevent contact of body fluids with the radiation source; and a housing to which the proximal end of the cannula is secured for moving the radiation source within the lumen of the cannula between a retracted proximal position interior of the housing and a treatment position at the distal end of the cannula, the housing comprising an advancement mechanism operatively coupled to the radiation source, the advancement mechanism being movable to move the radiation source between the retracted position and the treatment position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A device for local, directional delivery of radiation to intraocular target tissue comprising:
-
a radioactive radiation source attached to a source delivery wire, the source delivery wire having proximal and distal ends and wherein the proximal end and the distal end of the radioactive source wire comprise steel braided wire with a connection therebetween, and a reinforcing member for securing the proximal end to the distal end; a substantially rigid cannula sized for intraocular insertion into an eye and having a proximal end and a distal end for receiving the radiation source, the cannula being fluid tight so as to prevent contact of body fluids with the radiation source; and a housing to which the proximal end of the cannula is secured for moving the radiation source between a retracted proximal position interior of the housing and a treatment position at the distal end of the cannula, the housing comprising an advancement mechanism operatively coupled to the radiation source, the advancement mechanism being movable to move the radiation source between the retracted position and the treatment position.
-
Specification