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Modified injector for optimal insertion of standard CTRs in lax zonules
Calin Petru Tataru1,2, Anca Cristina Dogaroiu2, Constantin Mihai2
1Department of Ophthalmology, "Carol Davila" University of Medicine and Pharmacy, Bucharest - Romania.
European Journal of Ophthalmology
|June 26, 2015
Summary
A modified capsular tension ring (CTR) injector improves surgical safety by allowing controlled insertion, reducing complications during cataract surgery for patients with lax zonules.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Medical Device Design
Background:
- Capsular tension rings (CTRs) are crucial for stabilizing the lens capsule in cases of lax zonules during cataract surgery.
- Standard CTR insertion techniques carry risks due to uncontrolled manipulation of the ring's free end, potentially causing intraoperative incidents.
Purpose of the Study:
- To present a modified CTR injector design that enhances control during insertion.
- To eliminate the risks associated with uncontrolled maneuvering of the CTR free end.
Main Methods:
- A modified standard CTR injector featuring a metal anchoring element to secure the second eyelet of the CTR was developed.
- The modified device and insertion technique were evaluated in 50 adult patients undergoing cataract surgery with lax zonules.
Main Results:
- The improved injector significantly reduced injection duration and complexity.
- No intraoperative incidents or postoperative complications were observed using the modified device.
Conclusions:
- Fixating the second CTR eyelet enables controlled intraocular implantation, simplifying the surgical technique.
- This method reduces surgical complications linked to blind maneuvering of the CTR free end and minimizes disruption to remaining zonular fibers.
