Diode Laser Lithotription Technique Based on Optothermal Converter
Purpose: evaluation of the efficiency of the “hot spot” method for the fragmentation of urinary stones. Materials and methods: A retrospective analysis of clinical records of 1666 patients with urolithiasis who underwent percutaneous nephrolithoextraction/tripsy and contact ureterolithotripsy/extrac...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/8/10/452 |
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| author | Olga S. Streltsova Evgeny V. Grebenkin Nikita M. Bityurin Vladimir I. Bredikhin Vadim V. Elagin Vasily V. Vlasov Vladislav A. Kamensky |
| author_facet | Olga S. Streltsova Evgeny V. Grebenkin Nikita M. Bityurin Vladimir I. Bredikhin Vadim V. Elagin Vasily V. Vlasov Vladislav A. Kamensky |
| author_sort | Olga S. Streltsova |
| collection | DOAJ |
| description | Purpose: evaluation of the efficiency of the “hot spot” method for the fragmentation of urinary stones. Materials and methods: A retrospective analysis of clinical records of 1666 patients with urolithiasis who underwent percutaneous nephrolithoextraction/tripsy and contact ureterolithotripsy/extraction in the period from 2014 to 2017 at the urology clinic was performed to assess the incidence of postoperative infectious and inflammatory complications. The research objects were postoperative urinary stones (<i>n</i>-78). The X-ray density and linear dimensions of the stones were determined. Stone fragmentation was performed with a continuous-wave diode laser operating at wavelengths of 0.81 μm, 0.97 μm, and 1.47 μm. An absorbing coating of micro-size graphite powder was applied on the working tip of the optical fiber. In vitro fragmentation was carried out in liquid. Results: A group of patients (224/1666) (13.4 ± 0.86%) was identified, who developed infectious and inflammatory complications after: percutaneous nephrolithotripsy, 123/361 (34.1 ± 2.5%) cases; percutaneous nephrolithoextraction, 59/240 (24.6 ± 2.78%); contact ureterolithotripsy, 23/294 (7.8 ± 1.57%); and ureterolithoextraction, 19/771 (2.5 ± 0.56%). In liquid, the “hot spot” technique made it possible to fragment stones with an X-ray density of up to 1000 HU at a laser wavelength of 0.81 µm, up to 1400 HU at 0.97 µm, and up to 1400 HU at 1.47 µm. |
| first_indexed | 2024-03-10T06:16:46Z |
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| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T06:16:46Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-ef3f26018c4d4fec87f22fde950eb14c2023-11-22T19:41:28ZengMDPI AGPhotonics2304-67322021-10-0181045210.3390/photonics8100452Diode Laser Lithotription Technique Based on Optothermal ConverterOlga S. Streltsova0Evgeny V. Grebenkin1Nikita M. Bityurin2Vladimir I. Bredikhin3Vadim V. Elagin4Vasily V. Vlasov5Vladislav A. Kamensky6E.V. Shakhov Urology Department, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, 603005 Nizhny Novgorod, RussiaE.V. Shakhov Urology Department, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, 603005 Nizhny Novgorod, RussiaInstitute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov St., 603155 Nizhny Novgorod, RussiaInstitute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov St., 603155 Nizhny Novgorod, RussiaInstitute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, 603005 Nizhny Novgorod, RussiaE.V. Shakhov Urology Department, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, 603005 Nizhny Novgorod, RussiaInstitute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, 603005 Nizhny Novgorod, RussiaPurpose: evaluation of the efficiency of the “hot spot” method for the fragmentation of urinary stones. Materials and methods: A retrospective analysis of clinical records of 1666 patients with urolithiasis who underwent percutaneous nephrolithoextraction/tripsy and contact ureterolithotripsy/extraction in the period from 2014 to 2017 at the urology clinic was performed to assess the incidence of postoperative infectious and inflammatory complications. The research objects were postoperative urinary stones (<i>n</i>-78). The X-ray density and linear dimensions of the stones were determined. Stone fragmentation was performed with a continuous-wave diode laser operating at wavelengths of 0.81 μm, 0.97 μm, and 1.47 μm. An absorbing coating of micro-size graphite powder was applied on the working tip of the optical fiber. In vitro fragmentation was carried out in liquid. Results: A group of patients (224/1666) (13.4 ± 0.86%) was identified, who developed infectious and inflammatory complications after: percutaneous nephrolithotripsy, 123/361 (34.1 ± 2.5%) cases; percutaneous nephrolithoextraction, 59/240 (24.6 ± 2.78%); contact ureterolithotripsy, 23/294 (7.8 ± 1.57%); and ureterolithoextraction, 19/771 (2.5 ± 0.56%). In liquid, the “hot spot” technique made it possible to fragment stones with an X-ray density of up to 1000 HU at a laser wavelength of 0.81 µm, up to 1400 HU at 0.97 µm, and up to 1400 HU at 1.47 µm.https://www.mdpi.com/2304-6732/8/10/452micro size graphite optothermal convertorhot-spot lithotripsydiode lasersurolithiasisinfection lithiasis |
| spellingShingle | Olga S. Streltsova Evgeny V. Grebenkin Nikita M. Bityurin Vladimir I. Bredikhin Vadim V. Elagin Vasily V. Vlasov Vladislav A. Kamensky Diode Laser Lithotription Technique Based on Optothermal Converter Photonics micro size graphite optothermal convertor hot-spot lithotripsy diode lasers urolithiasis infection lithiasis |
| title | Diode Laser Lithotription Technique Based on Optothermal Converter |
| title_full | Diode Laser Lithotription Technique Based on Optothermal Converter |
| title_fullStr | Diode Laser Lithotription Technique Based on Optothermal Converter |
| title_full_unstemmed | Diode Laser Lithotription Technique Based on Optothermal Converter |
| title_short | Diode Laser Lithotription Technique Based on Optothermal Converter |
| title_sort | diode laser lithotription technique based on optothermal converter |
| topic | micro size graphite optothermal convertor hot-spot lithotripsy diode lasers urolithiasis infection lithiasis |
| url | https://www.mdpi.com/2304-6732/8/10/452 |
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