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New silicone tipped cannulas for subretinal fluid drainage
1Department of Ophthalmology, University of South Florida, College of Medicine, Tampa.
The British Journal of Ophthalmology
|October 1, 1989
Summary
This article introduces two novel disposable cannulas designed for the safe and effective internal drainage of subretinal fluid during ophthalmic surgery. These instruments facilitate atraumatic fluid removal through retinal tears or retinotomies.
Area of Science:
- Ophthalmology
- Retinal Surgery
- Medical Device Design
Background:
- Subretinal fluid accumulation can impair vision and complicate retinal detachment repair.
- Current methods for subretinal fluid drainage may pose risks of further retinal damage.
Purpose of the Study:
- To describe the design and function of two new disposable cannulas for internal subretinal fluid drainage.
- To highlight the potential for atraumatic fluid removal during vitreoretinal surgery.
Main Methods:
- Development of two disposable cannula designs: a curved and a straight version.
- Cannulas feature plastic hubs, 20-gauge proximal and 25-gauge distal stainless steel hypodermic tubing, and silicone overmounts.
Main Results:
- The described cannulas are designed for internal drainage of subretinal fluid.
- They are intended for use through pre-existing retinal holes/tears or surgically created retinotomies.
Conclusions:
- The new cannulas offer a potentially atraumatic method for subretinal fluid drainage.
- These devices may improve outcomes in vitreoretinal microsurgery by facilitating safe fluid removal.