Wicking hypodermic needles for chemical cauterization: A nov
Chemical cauterization is done with caustic agents to destroy skin lesions. For this, micropipette tip and syringe outlet and stuffed with cotton wick. Use of tooth pick and earbud as have chances of chemical injury.

To solve this problem, a wide bore hypodermic needle wicked with cotton as an applicator can be used.

Hypodermic needles of 16, 18, and 23 G are selected. The tips are snipped and wick of cotton thread is made. For capillary action it is inserted and packed in the needles (16 and 18 G) through the beveled end with the help of 23G needles. After this, a small proximal part of the needle is wicked in the same way from the hub end to make the entire length of the needle stuffed with cotton wick.

The chemical agents (Trichloroacetic acid/TCA and Phenol) are now withdrawn into cotton-stuffed 3 or 5 ml disposable syringe to control the flow of the chemical agents. The wicked needle is mounted on the syringe outlet and fixed with cyanoacrylate glue for better safety. The snipped needle tip for spot and beveled tip for non-spot cautery are used. After chemical cautery, the needle is capped.

Thus, a hypodermic needle stuffed with cotton wick is a good option for precise and safe chemical cauterization in office.

Source: https://www.idoj.in/viewimage.asp?img=IndianDermatolOnlineJ_2021_12_2_359_308922_f1.jpg