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Vacuum-assisted cortex removal - A novel change to the tradition
Sivagami Nachiappan1, Rajesh Vedachalam2, Syed Mohammad Sulaiman3
1Medical Consultant, General Ophthalmology, Glaucoma Services, Aravind Eye Hospital, Pondicherry, India.
Indian Journal of Ophthalmology
|October 29, 2022
Summary
A new vacuum-assisted device enhances the Simcoe cannula for safer cataract surgery in developing nations. This innovation aims for controlled aspiration, reducing surgeon strain and improving patient outcomes in manual small-incision cataract surgery.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Medical Devices
Background:
- Manual small-incision cataract surgery (MSICS) is a cost-effective method in developing countries.
- The Simcoe irrigation-aspiration cannula is the standard tool for cortex aspiration in MSICS.
- Existing tools may have limitations in achieving dynamic vacuum control and surgeon comfort.
Purpose of the Study:
- To introduce an innovative addition to the Simcoe cannula.
- To create a device for dynamic and controlled vacuum-assisted cortex removal.
- To reduce physical strain on surgeons during cataract aspiration.
Main Methods:
- Development of a vacuum-assisted cortex removal device.
- Integration of a simple spring-action mechanism.
- Modification of the existing Simcoe irrigation-aspiration cannula.
Main Results:
- The device generates a controlled vacuum through spring action.
- Potential for reduced physical strain for the surgeon.
- Effective volume of aspiration is anticipated.
Conclusions:
- The modified Simcoe cannula offers a promising advancement for MSICS.
- This innovation could improve efficiency and surgeon ergonomics.
- Further evaluation is needed to confirm clinical benefits.

