A new dual port cutter system for vitrectomy surgery

Area of Science:

• Ophthalmology
• Surgical Technology
• Biomedical Engineering

Background:

• Vitreous surgery is a critical ophthalmic procedure.
• Standard 20-gauge single port vitreous cutters are widely used.
• Enhancements in vitreous cutter technology aim to improve surgical efficiency.

Purpose of the Study:

• To evaluate and compare the performance of novel 20-gauge dual port (DP) vitreous cutter tip designs.
• To assess the efficacy of DP cutter tips against a standard 20-gauge single port cutter.

Main Methods:

• Five custom 20-gauge pneumatic DP vitreous cutter tips with varying port designs were fabricated.
• Performance was evaluated using porcine vitreous and water flow rate measurements.
• Surgical simulation in enucleated porcine eyes assessed bulk vitrectomy and vitreous base shaving capabilities.

Main Results:

• Certain DP cutter tips demonstrated significantly higher vitreous and water flow rates compared to the standard single port tip.
• Surgical evaluations indicated that some DP tips excelled in bulk vitrectomy tasks.
• No DP tip design outperformed the single port tip in effectively shaving the vitreous base.

Conclusions:

• The dual port (DP) vitreous cutter system offers potential for increased flow rates, influenced by port size and placement.
• DP cutter technology may lead to more efficient bulk vitrectomy procedures in the future.
• Further optimization of DP cutter designs is warranted to enhance performance in specific surgical scenarios.