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[Double-guided vacuum trephine system "Asmotom"].

H Bull1, S Deutschmann, H W Schlote

  • 1Klinik für Augenheilkunde, Medizinischen Akademie, Magdeburg, Bundesrepublik Deutschland.

Fortschritte Der Ophthalmologie : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|January 1, 1991
PubMed
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A novel doubly guided cornea suction trephine system preserves corneal vault during trephination. This system ensures precise, safe 360-degree cuts with minimal endothelial cell loss, enhancing surgical outcomes.

Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Corneal Surgery

Context:

  • Corneal transplantation requires precise trephination for optimal graft survival.
  • Existing trepanation methods can lead to variable outcomes due to corneal distortion.
  • Maintaining corneal vault is crucial for consistent trephine cuts.

Purpose:

  • To introduce a new doubly guided cornea suction trephine system.
  • To evaluate the system's ability to preserve corneal vault during trephination.
  • To assess the precision, safety, and endothelial cell loss associated with the new system.

Summary:

  • The system utilizes a suction rim and disc to maintain corneal vault throughout the trephination process.
  • A motor trephine rotates between inner and outer suction, creating precise, sharp 360-degree cuts.

Related Experiment Videos

  • Donor and recipient corneas are trephined from the epithelial side, resulting in minimal endothelial cell loss (0.170 mm) and preventing tilting or elliptical forms.

    • Impact:

    • This technology offers a more stable and reproducible method for corneal trephination.
    • Reduced endothelial cell loss can improve graft survival rates in corneal transplantation.
    • The system's precision and safety may lead to better visual outcomes for patients.