Aid for safer sclerotherapy of the internal spermatic vein.

A device was developed for use during sclerotherapy to treat spermatic varicoceles. It is used to provide external compression of the internal spermatic vein, to prevent distal flow of the sclerosing agent into the scrotal venous network. The device has been successfully used in 27 patients (43 spermatic veins). In no case did sclerosing agent leak past the compressor, and no complications related to the compressor itself have been encountered.