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Intra-ocular diathermy forceps.

Koen A van Overdam1,2, Emine Kilic3, Robert M Verdijk1,4

  • 1Department of Vitreoretinal Surgery, The Rotterdam Eye Hospital, Rotterdam, the Netherlands.

Acta Ophthalmologica
|December 3, 2017
PubMed
Summary
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New intra-ocular diathermy forceps were developed and tested. Type 1 forceps successfully closed retinal arteries and veins using less energy than Type 2 and conventional diathermy.

Area of Science:

  • Ophthalmology
  • Surgical Instrumentation
  • Vascular Surgery

Background:

  • Intra-ocular diathermy is crucial for managing retinal blood vessels.
  • Existing diathermy instruments may have limitations in precision and efficiency.
  • Development of novel instruments is essential for advancing ophthalmic surgical techniques.

Purpose of the Study:

  • To design and evaluate novel intra-ocular diathermy forceps.
  • To assess the efficacy of these forceps in achieving retinal blood vessel closure.
  • To compare the performance of new forceps against conventional diathermy methods.

Main Methods:

  • Two types of 23-gauge intra-ocular bipolar diathermy forceps were engineered.
  • Forceps were modified from commercial membrane peeling forceps.
Keywords:
coagulationintra-ocular diathermy forcepsperfusionporcine eye modelretinal blood vesselsretinal hemangioblastoma

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  • Performance was tested on perfused porcine cadaver eyes, with vessel closure confirmed by perfusion and histology.

    • Main Results:

    • Type 1 diathermy forceps demonstrated superior success rates in closing retinal arteries (5/5) and veins (5/5) compared to Type 2 (5/5 arteries, 4/5 veins) and conventional diathermy (3/5 arteries, 4/5 veins).
    • Type 1 forceps required significantly less energy for both artery and vein closure.
    • Histological analysis corroborated the perfusion study findings, confirming effective vessel coagulation.

    Conclusions:

    • Two novel multifunctional intra-ocular forceps were successfully developed.
    • These instruments offer capabilities for membrane peeling, grasping, compression, and coagulation of retinal blood vessels.
    • Both developed forceps types present operational advantages over conventional intra-ocular diathermy instruments.