Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Light application
Reexamination Certificate
2002-02-25
2004-02-24
Dvorak, Linda C. M. (Department: 3739)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Light application
C607S089000, C606S003000, C128S898000, C250S369000
Reexamination Certificate
active
06695870
ABSTRACT:
BACKGROUND OF THE INVENTION
A process for treating a diseased organism in which encapsulated material is disposed within the organism and contacted with focused photonic energy.
BACKGROUND OF THE INVENTION
Proton therapy is often used to treat tumors. Thus, e.g., and as is disclosed in U.S. Pat. No. 5,668,371, “In present proton therapy systems, a beam of protons is collimated to the outline of the tumor and adjusted in energy to stop at the far edge of the tumor. Material is then inserted in the proton beam to reduce the energy of the protons and thus draw the point where the protons stop back through the tumor.”
In prior art proton therapy processes, it is difficult to narrowly focus the proton energy on diseased tissue. Thus, as is disclosed in Column 2 of U.S. Pat. No. 5,668,371, “This technique, which continuously exposes the patient to the beam of protons as the spokes are moved through the beam, dramatically increases the dose to healthy tissue on the near side of the tumor . . . .”
It is an object of this invention to provide a process of proton therapy in which the dose of protons supplied to healthy tissue within an organism is minimized.
SUMMARY OF THE INVENTION
In accordance with this invention, there is provided a process for proton therapy comprising the steps of disposing a multiplicity of nanocapsules at a specified site within a biological organism, focusing laser energy at a wavelength of from about 350 nanometers to about 850 nanometers and an intensity of from about 10
19
to about 10
21
watts/square centimeter, and contacting said nanocapsules with said focused laser energy for less than about 30 femtoseconds, thereby producing charged nuclei within said capsules.
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Dvorak Linda C. M.
Greenwald P.C. Howard J.
Nanocomp, L.L.C.
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