A cartridge for an intraocular lens (IOL) delivery system is provided with a nozzle (14) having a straight thinned walled distal portion (18). A transition region (20) between a tapered folding portion (16) of the cartridge and the nozzle (14) contains reinforcing gussets (22) to help prevent splitting of the cartridge. Flow leaders (26) in the nozzle direct the flow of material during molding at the 12:00 o'clock position (28), positioning the weld line of the flow front at the 6:00 o'clock position (30).一種用於IOL輸送系統的輸送匣，其具有一帶有直線的較薄外壁之遠端管嘴。介於該輸送匣的逐漸尖細折疊部分與管嘴之間的該轉換區域，係包含有強化角板以協助其避免該輸送匣的分離。在該管嘴中的導流器會於模製期間導引在12點鐘位置之材料流，而將該流動波前(flow front)的熔接線設置於在6點鐘位置。
