| One case study reported that incompetent perforators contribute to varicose veins and that sclerosing the perforator can essentially remove the varicose vein. |
| Attached to the handle was a thumb-rest and a tube for removing or adding fluids and a perforator within the cannula. |
| In the 1940s, incompetent perforator veins were recognized as significant contributors to venous ulcers. |
| Bale presses are frequently equipped with a retractable perforator for PET bottles in order to guarantee load weights towards the dies. |
| The perforator was replaced by a new punched tape machine which worked like a typewriter. |
| These machines are used in conjunction with a precomposing machine having a keyboard perforator which produces the precomposition on a paper tape. |
