preprints_ui: 6fhsm_v1
Data license: ODbL (database) & original licenses (content) · Data source: Open Science Framework
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| 6fhsm_v1 | Bending and coiling a coated radial endovenous laser fibre does not affect power delivery from the tip – a short report of a pilot study. | Background: Endovenous laser ablation (EVLA) is one of the first line recommended treatments for varicose veins. During treatment, red light from the aiming beam can be seen emerging from the side wall of the catheter wherever it is bent. This is seen when the catheter is used as supplied, stored coiled on a plastic card frame. The aim of this study was to see if such distortions of the catheter results in a loss of power emitted from the catheter treatment tip. Methods: One 600µm radial EVLA catheter (Oberon Fiber Technologies, Wildau, Germany) was attached to a 1470nm diode laser console (Varilase, Vascular Solutions Inc, Teleflex, Minnesota, USA). Power emitted was measured by a power meter (EO19K-15S-H5, Edmund Optics Ltd. York, UK) connected to a recording device (Premier Power/Energy Meter, Edmund Optics Ltd. York, UK). The laser was fired continuously for 30 seconds with the catheter in the following configurations: straight line, coiled on the plastic card as supplied (diameter of loop = 16cm), 1 loop of 10 cm diameter, 2 loops of 10 cm diameter, 1 loop of 5 cm diameter. Each configuration was tested at both 10W and 6W. Results: Both 10W and 6W showed a power emission from the laser tip approximately 13% less than that shown on the console (approx. 8.7W and 5.2W respectively). However, for each power, there was no difference in emitted power with any of the catheter configurations. Conclusion: Despite the loss of red light from the aiming beam through the side wall of an EVLA catheter when bent, this does not correlate to any loss of emitted power from the treatment beam. The catheter performs with the same efficiency whether it is straight, coiled in the package as supplied by the manufacturer, or even bent into tighter loops than 5 cm diameter. | 2024-02-25T17:20:26.745508 | 2024-03-09T12:55:54.598193 | 2024-02-25T17:34:21.465962 | coppreprints | 1 | accepted | 1 | 1 | https://doi.org/10.31219/osf.io/6fhsm | CC0 1.0 Universal | EVLA; catheter; endovenous; fibre; loss; power; transmission | ["EVLA", "catheter", "endovenous", "fibre", "loss", "power", "transmission"] | Mark Steven Whiteley; Rosalba Paone | [{"id": "bp75e", "name": "Mark Steven Whiteley", "index": 0, "orcid": "0000-0001-6727-6245", "bibliographic": true}, {"id": "tkjme", "name": "Rosalba Paone", "index": 1, "orcid": null, "bibliographic": true}] | Mark Steven Whiteley | Surgery / Endovenous | [{"id": "633b0ebf850fea000a2aabbf", "text": "Surgery / Endovenous"}] | https://osf.io/download/65db76e16d0cb80d7f1a9e90 | 0 | not_applicable | not_applicable | [] | 2025-04-09T20:50:04.402803 |