EFFECTS OF A MODIFIED VITRECTOMY PROBE IN SMALL-GAUGE VITRECTOMY An Experimental Study on the Flow and on the Traction Exerted on the Retina

EFFECTS OF A MODIFIED VITRECTOMY PROBE IN SMALL-GAUGE VITRECTOMY An Experimental Study on the Flow and on the Traction Exerted on the Retina

Author Rizzo, Stanislao Google Scholar
Fantoni, Gualtiero Google Scholar
de Santis, Giovanni Google Scholar
Lue, Jaw-Chyng Lormen Google Scholar
Ciampi, Jonathan Google Scholar
Palla, Michele Google Scholar
Ebert, Federica Genovesi Google Scholar
Savastano, Alfonso Google Scholar
De Maria, Carmelo Google Scholar
Vozzi, Giovanni Google Scholar
Fernandes, Rodrigo A. Brant Autor UNIFESP Google Scholar
Faraldi, Francesco Google Scholar
Criscenti, Giuseppe Google Scholar
Abstract Purpose: Thorough this experimental study, the physic features of a modified 23-gauge vitrectomy probe were evaluated in vitro. Methods: A modified vitrectomy probe to increase vitreous outflow rate with a small-diameter probe, that also minimized tractional forces on the retina, was created and tested. The "new" probe was created by drilling an opening into the inner duct of a traditional 23-gauge probe with electrochemical or electrodischarge micromachining. Both vitreous outflow and tractional forces on the retina were examined using experimental models of vitreous surgery. Results: The additional opening allowed the modified probe to have a cutting rate of 5,000 cuts per minute, while sustaining an outflow approximately 45% higher than in conventional 23-gauge probes. The modified probe performed two cutting actions per cycle, not one, as in standard probes. Because tractional force is influenced by cutting rate, retinal forces were 2.2 times lower than those observed with traditional cutters. Conclusion: The modified probe could be useful in vitreoretinal surgery. It allows for faster vitreous removal while minimizing tractional forces on the retina. Moreover, any available probe can be modified by creating a hole in the inner duct.
Keywords flow rate
holed vitrectomy probe
modified vitrectomy probe
surgical cutter
tractional force
vitrectomy probe
vitreoretinal surgery
Language English
Date 2017
Published in Retina-The Journal Of Retinal And Vitreous Diseases. Philadelphia, v. 37, n. 9, p. 1765-1774, 2017.
ISSN 0275-004X (Sherpa/Romeo, impact factor)
Publisher Lippincott Williams & Wilkins
Extent 1765-1774
Origin http://dx.doi.org/10.1097/IAE.0000000000001411
Access rights Closed access
Type Article
Web of Science ID WOS:000408536400031
URI http://repositorio.unifesp.br/handle/11600/51324

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account