Patent ID: 8535360

Claim:
A system for treating a spider vein comprising: a photosensitizing agent in solution sensitive to light energy at a selected wavelength, such that the photosensitizing agent generates singlet oxygen and free radicals; a photoactivation device that emits light energy at the selected wavelength, the photoactivation device configured to apply the light energy to a targeted treatment site where the spider vein exists, the light energy activating the photosensitizing agent to generate singlet oxygen and reactive oxygen radicals that disrupt normal cell functions and cause endothelial tissue cell death in an inner wall of the spider vein and evoke a healing process without affecting non-endothelial tissue cells, where the healing process shuts and shrinks the spider vein in the targeted treatment site; a syringe for injecting a prescribed volume of the photosensitizing agent in solution at an intravenous injection site, the intravenous injection site offering venous access to the targeted treatment site spaced at a distance from the targeted treatment; and a timing device for measuring a prescribed time period to allow the photosensitizing agent to become systemic and be carried by blood into contact with endothelial tissue on an inner wall of the spider vein; wherein the photoactivation device is conditioned to deliver multiple wavelengths for use with photosensitizing agents of different activation characteristics.