A Coaxial Electrode for Intraocular Diathermy

Tate, George W.; Hutton, William L.; Vaiser, Albert; Snyder, William B.

doi:10.1016/0002-9394(75)90813-2

Cited by 14 publications

(2 citation statements)

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“…Monopolar diathermy coagulated blood vessels, but caused collateral retinal damage. Bipolar diathermy had narrower coagulation boundaries (Tate et al 1975;Parel et al 1983). There have been no advances in intraocular diathermy design since the 1980s, in contrast to laparoscopic surgery, where bipolar diathermy forceps are routinely used since the 1990s (Entezari et al 2007).…”

Section: Introductionmentioning

confidence: 96%

Intra‐ocular diathermy forceps

Overdam

Kılıç

Verdijk

et al. 2017

Acta Ophthalmologica

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PurposeThe purpose of this study was to develop intra‐ocular diathermy forceps and test them on perfused porcine cadaver eyes.MethodsWe designed two types of 23‐gauge intra‐ocular bipolar diathermy forceps by modifying commercially available membrane peeling forceps. In the first type, the emitting electrode is connected to one‐half of the core and the return electrode to the other half, with one jaw of the forceps attached to each half. In the second type, the emitting electrode is attached to the core and both jaws of the forceps, and the return electrode to the surrounding tube. We compared the new diathermy forceps to conventional intra‐ocular diathermy, on perfused porcine cadaver eyes. First‐order retinal artery and vein closure was confirmed both by a perfusion study and by histology of the treated vessels.ResultsType 1 diathermy forceps closed retinal arteries and veins more successfully (five of five and five of five successful treatments, respectively) than Type 2 diathermy forceps (five of five and four of five, respectively) and conventional diathermy (three of five and four of five, respectively). Less energy was used with Type 1 compared to Type 2 and conventional for artery closure (1.5 ± 0.0 versus 4.6 ± 3.3 versus 2.1 ± 0.8 joules, respectively) and vein closure (1.5 ± 0.0 versus 5.4 ± 4.6 versus 2.4 ± 0.8 joules, respectively). Histology of the treated vessels confirmed the perfusion study results.ConclusionWe designed two types of a new multifunctional intra‐ocular instrument with the ability to peel membranes and to grasp, compress and coagulate retinal blood vessels. Both types pose operational advantages compared to current conventional intra‐ocular diathermy.

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Section: Introductionmentioning

confidence: 96%

Intra‐ocular diathermy forceps

Overdam

Kılıç

Verdijk

et al. 2017

Acta Ophthalmologica

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“…Die Blutungsquelle kann damit sichtbar gemacht werden und in der unmittelbaren Umgebung der Koagulation wird em Kuhlungseffekt erzielt. Eine ahnliche koaxiale Elektrode, deren Mantel jedoch noch mit einer inaktiven Elektrode am Oberschenkel verbunden war, hat Tate (1975) beschrieben. Eine Spulvorrichtung ist darin nicht vorgesehen.…”

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Bipolar-Naßfeld-Diathermie in der Mikrochirurgie

Klöti¹

1984

Klin Monatsbl Augenheilkd

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The author describes a miniature bipolar diathermy unit which can be used for several microsurgical purposes. It was developed from a standard endodiathermy instrument which has been in use for pars plana vitrectomy since 1973. It features bipolar forceps which can be used for welding conjunctival flaps and macrohemostasis in strabismus, orbital and lid surgery; bipolar electrodes with and without infusion, for extraocular hemostasis and intraocular microhemostasis in the anterior and posterior segments; bipolar electrodes with infusion for special purposes (still at the experimental stage), for capsulotomy of the anterior lens capsule for extracapsular cataract extraction, section of intraocular strands and membranes and sector iridectomy for tumors or rubeosis of the iris.

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