Method for treatment of varices
View Patent ↗A minimally invasive method for treating varices including pelvic varices in females, varicoceles, and also oesophageal varices is disclosed. The method comprises the steps of inserting a catheter device into the blood vessels of a patient and advancing the distal end of the catheter to reach the varix or varices. The insertion may be made in the femoral vein or in other vessels as appropriate. Preferably, x-ray, angiography, or other imaging techniques are used to visualize and position the catheter. An optical fiber or optical fiber bundle is then inserted into the catheter and the distal end is advanced to a predetermined point near the varix or varices. Laser energy of preferably 980 nm is then transmitted to the varix to close the blood vessel. Imaging techniques such as angiographies may again be performed to confirm closure of the vein. The method is an out-patient procedure that requires no incision or general anesthesia, requires no recovery time, and does not require that any foreign objects be left in the body. This method has been shown to have a higher success rate than previous embolization and surgical procedures.
1. A method for the treatment of varices in the genital/pelvic area or in the oesophageal area, comprising the steps of:
a. inserting a hollow catheter having an inner lumen into a blood vessel and advancing a distal end of said catheter to a position proximate to at least one varix selected from the group consisting of a varicocele, a female pelvic varix, and an oesophageal varix;
b. inserting an optical waveguide, whose proximal end is connected to a radiation source and whose distal end distributes radiation, into the inner lumen of said catheter;
c. advancing said distal end of said waveguide through said distal end of said catheter to a predetermined point near said at least one varix;
d. irradiating blood within said varix with radiation from said radiation source so as to cause closure of said at least one varix; and
wherein said radiation has a wavelength of 980 +/−20 nm and is applied in a series of pulses, said pulses having a pulse length of about 1-1.5 second and being separated by about 1 second.
2. The method for treatment of varices according to claim 1 , wherein said waveguide is selected from the group consisting of an optical fiber and an optical fiber bundle.
3. The method for treatment of varices according to claim 1 , wherein said distal end of said optical waveguide comprises a bare fiber tip or a diffuser.
4. The method for treatment of varices according to claim 1 , wherein said radiation source is selected from the group consisting of a diode laser and a diode laser array.
5. The method for treatment of varices according to claim 1 , wherein said predetermined point is 1 cm from said distal end of said catheter.
6. The method for treatment of varices according to claim 1 , comprising the additional step of utilizing x-ray and angiographic imaging to view a path of said catheter during said catheter insertion step.
7. The method for treatiiient of varices according to claim 1 , comprising the additional step of utilizing echo color doppler ultrasound to view a path of said catheter during said catheter insertion step.
8. The method for treatment of varices according to claim 1 , comprising the additional step of performing an additional angiography after said irradiation step to confirm closure of said varix.
9. The method for treatment of varices according to claim 2 , wherein said optical fiber has a core diameter of preferably 400 microns.