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Long Z, Chi Y, Zhang X, Li H, Yang D, Li D, Jiang Z. An EM-Tracked Approach for Calibrating the 3D Pose of Flexible Endoscopes. Ann Biomed Eng 2024; 52:1435-1447. [PMID: 38402316 DOI: 10.1007/s10439-024-03469-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/06/2024] [Indexed: 02/26/2024]
Abstract
Flexible endoscopes are ideal instruments for visualizing and diagnosing the inner surfaces of organs via a minimally invasive incision. Calibrating a flexible endoscope is a troublesome yet inevitable process in image-based tools tracking. Aiming to simplify the calibration process, we propose an electromagnetic (EM)-tracked calibration approach that does not require any predefined poses of the EM sensor. A three-stage calibration protocol was presented in an extensor. First, the orientation of the endoscope tube was derived by conducting a circular rotation of the endoscope around its axis utilizing a pair of tightly bearing stands. Second, the 3D position of the endoscope tip was acquired by having the tip come into contact with a flat plane. Third, the pose model of the bending section was derived and transformed into the local coordinate system of the EM sensor attached to the endoscope handle. To assess the accuracy of the proposed calibration approach, two experiments were designed and performed. Experimental results indicate accuracies of 0.09 ± 0.06 deg and 0.03 ± 0.19 deg in the estimation of the endoscope tube orientation and 0.52 ± 0.29, 0.33 ± 0.11, and 0.29 ± 0.17 mm in the x, y, and z estimations of the endoscope tip position, respectively. The proposed approach is accurate and easy to operate, does not require the employment of custom calibration markers, and can be used not only in surgical training systems but also in the endoscopic-based tools tracking.
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Affiliation(s)
- Zhongjie Long
- Key Laboratory of the Ministry of Education for Modern Measurement & Control Technology, and School of Electromechanical Engineering, Beijing Information Science & Technology University, Beijing, 100192, China.
| | - Yongting Chi
- Key Laboratory of the Ministry of Education for Modern Measurement & Control Technology, and School of Electromechanical Engineering, Beijing Information Science & Technology University, Beijing, 100192, China
| | - Xianbo Zhang
- Key Laboratory of the Ministry of Education for Modern Measurement & Control Technology, and School of Electromechanical Engineering, Beijing Information Science & Technology University, Beijing, 100192, China
| | - Hongbing Li
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dejin Yang
- Beijing Jishuitan Hospital, Capital Medical School, 4th Clinical College of Peking University, Beijing, 100035, China
| | - Diangeng Li
- Department of Nephrology, Beijing Chao-yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Zhouxiang Jiang
- Key Laboratory of the Ministry of Education for Modern Measurement & Control Technology, and School of Electromechanical Engineering, Beijing Information Science & Technology University, Beijing, 100192, China
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2
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Giulioni C, Brocca C, Gauhar V, Somani BK, Chew BH, Traxer O, Emiliani E, Innoue T, Sarica K, Gadzhiev N, Tanidir Y, Teoh JYC, Galosi AB, Castellani D. Does age impact outcomes of retrograde intrarenal surgery in the elderly? Results from 366 patients from the FLEXible ureteroscopy outcomes registry (FLEXOR). Aging Clin Exp Res 2023; 35:2711-2719. [PMID: 37682489 PMCID: PMC10627914 DOI: 10.1007/s40520-023-02545-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/20/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND There has been a consistent increase in the last decades in prevalence of renal stones in elderly. AIMS To evaluate outcomes of retrograde intrarenal surgery (RIRS) for renal stones in elderly and factors associated with postoperative complications and residual fragments (RFs). METHODS Data from 12 centers were retrospectively reviewed. INCLUSION CRITERIA ≥ 75 years, renal stones only, normal renal anatomy. Patients were divided into three groups; Group 1: patients aged 75-79 years; Group 2: age 80-84 years; Group 3: age ≥ 85 years. Multivariable logistic regression analyses were performed to assess factors associated with perioperative complications, sepsis, and RFs. RESULTS 366 patients were included. There were 189 patients in Group 1, 113 in Group 2, and 64 in Group 3. There was no difference between groups regarding stone features and total surgical time. Median length of stay was significantly longer in Group 3 (6.0 days, vs 2.0 days in Group 2 vs 2.5 days in Group 1, p = 0.043). There was no significant difference in postoperative complications and RFs between the groups. At multivariable logistic regression analysis, female gender (OR 2.82) and maximum stone diameter (OR 1.14) were associated with higher odds of sepsis, while surgical time (OR 1.12) and the use of a reusable ureteroscope (OR 6.51) with overall complications. Stone size (OR 1.23) was associated with higher odds of RFs. CONCLUSION RIRS showed safety and efficacy for kidney stones in elderly patients. Surgical time should be kept as short as possible to avoid higher odds of postoperative complications, particularly in females.
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Affiliation(s)
- Carlo Giulioni
- Urology Unit, Azienda Ospedaliero-Universitaria Delle Marche, Università Politecnica Delle Marche, Via Conca 71, 60126, Ancona, Italy.
| | - Carlo Brocca
- Urology Unit, Azienda Ospedaliero-Universitaria Delle Marche, Università Politecnica Delle Marche, Via Conca 71, 60126, Ancona, Italy
| | - Vineet Gauhar
- Department of Urology, Ng Teng Fong General Hospital, Jurong East, Singapore
| | - Bhaskar Kumar Somani
- Department of Urology, University Hospitals Southampton, NHS Trust, Southampton, UK
| | - Ben Hall Chew
- Department of Urology, University of British Columbia, Vancouver, Canada
| | - Olivier Traxer
- Department of Urology AP-HP, Sorbonne University, Tenon Hospital, Paris, France
| | - Esteban Emiliani
- Department of Urology, Fundación Puigvert, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Takaki Innoue
- Department of Urology and Stone Center, Hara Genitourinary Hospital, Kobe, Hyogo, Japan
| | - Kemal Sarica
- Department of Urology, Biruni University Medical School, Istanbul, Turkey
| | - Nariman Gadzhiev
- Endourology department, Saint-Petersburg State Medical University, Saint-Petersburg, Russia
| | - Yiloren Tanidir
- Department of Urology, Marmara University School of Medicine, Istanbul, Turkey
| | - Jeremy Yuen-Chun Teoh
- Department of Surgery, Faculty of Medicine, S.H. Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong, China
| | - Andrea Benedetto Galosi
- Urology Unit, Azienda Ospedaliero-Universitaria Delle Marche, Università Politecnica Delle Marche, Via Conca 71, 60126, Ancona, Italy
| | - Daniele Castellani
- Urology Unit, Azienda Ospedaliero-Universitaria Delle Marche, Università Politecnica Delle Marche, Via Conca 71, 60126, Ancona, Italy
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Bragaru M, Multescu R, Georgescu D, Bulai C, Ene C, Popescu R, Geavlete P, Geavlete B. Single-use versus conventional reusable flexible ureteroscopes - an evaluation of the functional parameters. J Med Life 2023; 16:10-15. [PMID: 36873117 PMCID: PMC9979166 DOI: 10.25122/jml-2022-0269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/27/2022] [Indexed: 03/07/2023] Open
Abstract
The purpose of single-use flexible ureteroscopes (su-fURS) was to overcome the limitations of conventional reusable ureteroscopes in terms of maneuverability and maintenance. We aimed to perform a systematic literature review on available su-fURS performance versus conventional reusable fURS focusing on clinical data. A systematic research using Pubmed was performed evaluating single-use fURS and reusable fURS in urinary tract stone disease, including prospective assessments and case series. This review aimed to provide an overview of single-use and disposable flexible ureteroscopes and to examine and compare their capabilities (deflection, irrigation, optical properties). We included 11 studies, where the single-use fURS were compared to the reusable fURS. The studies with single-use ureteroscopes included data on LithoVue (Boston Scientific), The Uscope UE3022 (Pusen, Zhuhai, China), NeoFlex-Flexible, (Neoscope Inc San Jose, CA), 23 YC-FR-A (Shaogang). For reusable ureteroscopes, data were included on three models, two digital (Karl Storz Flex-XC and Olympus URF-Vo) and one fiber optic (Wolf-Cobra). There were no significant differences in stone-free rate, procedure duration, or functional capabilities between single-use fURS and reusable fURS. The systematic literature review analyzed operative time, functional capabilities, stone-free rates, and postoperative complications of the ureteroscopes, and a special chapter about renal abnormalities to emphasize that they are a good choice having a high proportion of stone-free rates and few risks, particularly in treating difficult-to-access calculi. Single-use fURS demonstrate a comparable efficacy with reusable fURS in resolving renal lithiasis. Further studies on clinical efficacy are needed to determine whether single-use fURS will reliably replace its reusable counterpart.
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Affiliation(s)
- Marius Bragaru
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Razvan Multescu
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania
| | - Dragos Georgescu
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Cătălin Bulai
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Cosmin Ene
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Razvan Popescu
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Petrişor Geavlete
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Bogdan Geavlete
- Urology Department, Sf. Ioan Emergency Clinical Hospital, Bucharest, Romania.,3 Department, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
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Xiong L, Loo NN, Lu ZQ, Xu X, Wie G. Ureterolithiasis in Human Immunodeficiency Virus (HIV) Patients Treated with Single-Use Ureteroscope: A Case Report. AMERICAN JOURNAL OF CASE REPORTS 2022; 23:e938608. [PMID: 36567520 PMCID: PMC9801066 DOI: 10.12659/ajcr.938608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The number of HIV-positive patients is increasing worldwide. Such patients with upper urinary tract stones have been treated primarily with flexible ureteroscopy. CASE REPORT Two patients with HIV and upper urinary tract stones were treated with a single-use digital flexible ureteroscope between July 2021 and January 2022. Both cases were treated by transurethral ureteroscope lithotripsy with a Guangzhou Redpine single-use digital flexible ureteroscope. This is also the first reported case of using a disposable ureteral flexible scope to manage a patient with upper urinary tract stones in combination with HIV. The holmium laser power was set to 0.2-0.6j/20-50 Hz for fragmentation and 1.0-1.5j/10-20 Hz for the dusting of the stones. Renal stones larger than 1 cm were dusted to around 1 cm first, and then a lithotripsy basket was used to remove them. The f5 Polaris Ultra ureteral stent was implanted during the procedure. The operations went smoothly. Four weeks after surgery, CT scans revealed a 4 mm stone remnant in one case, and the ureteral stent was removed in both cases. After 3 months, a kidney, ureter, and bladder X-ray revealed no stones remaining in the case that had earlier shown a 4 mm stone residual. In both cases, the stone composition was made up of calcium oxalate monohydrate and calcium oxalate dihydrate stones. CONCLUSIONS A single-use flexible ureteroscope has a proven clinical benefit in treating HIV-combined upper urinary tract stones. After the operations, there were no urinary infections, bleeding, or other complications in either patient.
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Affiliation(s)
- Lin Xiong
- Department of Urology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, PR China,Corresponding Author: Lin Xiong, e-mail:
| | - Nga-Nuen Loo
- International School, Jinan University, Guangzhou, Guangdong, PR China
| | - Zhen-Quen Lu
- Department of Urology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, PR China
| | - Xiang Xu
- Department of Urology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, PR China
| | - Genggeng Wie
- Department of Urology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, PR China
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Quiroz Y, Somani BK, Tanidir Y, Tekgul S, Silay S, Castellani D, Lim EJ, Fong KY, Garcia Rojo E, Corrales M, Hameed BMZ, Llorens E, Teoh JYC, Dogan HS, Traxer O, Bujons Tur A, Gauhar V. Retrograde Intrarenal Surgery in Children: Evolution, Current Status, and Future Trends. J Endourol 2022; 36:1511-1521. [PMID: 35972727 DOI: 10.1089/end.2022.0160] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Introduction: Incidence of urolithiasis in children has increased in recent years and with technological advancements and miniaturization of surgical instruments, pediatric urologists have acquired an impressive arsenal for their treatment. Retrograde intrarenal surgery (RIRS) has gained widespread popularity as it is a natural extension of semirigid ureteroscopy and can be done through natural orifice minimizing the morbidity of percutaneous access. The aim of this narrative review is to describe how RIRS has evolved over the decades in children and if the age-related anatomical difference impacts reported outcomes especially stone-free rate (SFR) and complications. Materials and Methods: An electronic literature search from inception to October 15, 2021 was performed using Medical Subject Heading terms in several combinations on PubMed, EMBASE, and Web of Science without language restrictions. A total of 2022 articles were founded and 165 articles were full-text screening. Finally, 2 pediatric urologists included 51 articles that summarize the available literature regarding the development and use of RIRS in children. Results: RIRS as of today is well established as a superior modality for all stones in all locations compared with extracorporeal shockwave lithotripsy both in children and adults. The passive dilation has decreased the need of active ureteral dilation, but the need to perform prestenting is not defined yet. Regarding the use of the ureteral access sheath, the literature tends to lean toward its placement in most cases, but we do not know its long-term effects over the growth of children. Finally, the SFR has increased as the experience of pediatric urologists increases, as well as the number of complications has decreased. Conclusion: RIRS in pediatrics has crossed many milestones, yet many areas need further research and larger data are required to make RIRS the procedure of choice for renal stone management in children across all age groups.
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Affiliation(s)
- Yesica Quiroz
- Department of Urology, Division of Pediatric Urology, Fundació Puigvert, Barcelona, Spain
| | - Bhaskar Kumar Somani
- Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Yiloren Tanidir
- Department of Urology, Marmara University School of Medicine, Istanbul, Turkey
| | - Serdar Tekgul
- Division of Pediatric Urology, Department of Urology, Medical School, Hacettepe University, Ankara, Turkey
| | - Selcuk Silay
- Department of Urology, Istanbul Biruni University, Istanbul Medeniyet University, Istanbul Memorial Hospital, Istanbul, Turkey
| | - Daniele Castellani
- Department of Urology, Division of Urology, Azienda Ospedaliero-Universitaria Ospedali Riuniti di Ancona, Università Politecnica delle Marche, Ancona, Italy
| | - Ee Jean Lim
- Department of Urology, Singapore General Hospital, Singapore, Singapore
| | - Khi Yung Fong
- Department of Urology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Esther Garcia Rojo
- Department of Urology, Hospital Universitario HM Sanchinarro, HM Hospitales, Madrid, Spain
| | - Mariela Corrales
- Department of Urology, Hôpital Tenon, Sorbonne University, Paris, France
| | - B M Zeeshan Hameed
- Department of Urology, Father Muller Medical College Mangalore, Karnataka, India
| | - Erika Llorens
- Department of Urology, Division of Pediatric Urology, Fundació Puigvert, Barcelona, Spain
| | - Jeremy Yuen-Chun Teoh
- S.H. Ho Urology Center, Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
| | - Hasan Serkan Dogan
- Division of Pediatric Urology, Department of Urology, Medical School, Hacettepe University, Ankara, Turkey
| | - Olivier Traxer
- Department of Urology, Hôpital Tenon, Sorbonne University, Paris, France
| | - Anna Bujons Tur
- Department of Urology, Division of Pediatric Urology, Fundació Puigvert, Barcelona, Spain
| | - Vineet Gauhar
- Department of Urology, Ng Teng Fong General Hospital, NUHS, Singapore, Singapore
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Geavlete B, Mareș C, Mulțescu R, Georgescu D, Geavlete P. Hybrid flexible ureteroscopy strategy in the management of renal stones - a narrative review. J Med Life 2022; 15:919-926. [PMID: 36188640 PMCID: PMC9514813 DOI: 10.25122/jml-2022-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/02/2022] [Indexed: 11/21/2022] Open
Abstract
The introduction of single-use flexible ureteroscopes (suFURSs) in daily practice tends to overcome the main limitations of reusable ureteroscopes (reFURSs), in terms of high acquisition costs, maintenance, breakages and repairing costs, reprocessing and sterilization, as retrograde intrarenal surgery (RIRS) is promoted as first-line treatment of renal stones in most cases. A hybrid strategy implies having both instruments in the armamentarium of endourology and choosing the best strategy for cost-efficiency and protecting expensive reusable instruments in selected high-risk for breakage cases such as large stones of the inferior calyx, a steep infundibulopelvic angle or narrow infundibulum, or abnormal anatomy as in horseshoe and ectopic kidney. In terms of safety and efficiency, data present suFURSs as a safe alternative considering operating time, stone-free, and complication rates. An important aspect is highlighted by several authors about reusable instrument disinfection as various pathogens are still detected after proper sterilization. This comprehensive narrative review aims to analyze available data comparing suFURSs and reFURSs, considering economic, technical, and operative aspects of the two types of instruments, as well as the strategy of adopting a hybrid approach to selecting the most appropriate flexible ureteroscope in each case.
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Affiliation(s)
- Bogdan Geavlete
- Department of Urology, Sanador Hospital, Bucharest, Romania
- Department of Urology, Emergency Clinical Hospital Sfântul Ioan, Bucharest, Romania
| | - Cristian Mareș
- Department of Urology, Emergency Clinical Hospital Sfântul Ioan, Bucharest, Romania
| | - Răzvan Mulțescu
- Department of Urology, Sanador Hospital, Bucharest, Romania
- Department of Urology, Emergency Clinical Hospital Sfântul Ioan, Bucharest, Romania
| | - Dragoș Georgescu
- Department of Urology, Sanador Hospital, Bucharest, Romania
- Department of Urology, Emergency Clinical Hospital Sfântul Ioan, Bucharest, Romania
| | - Petrișor Geavlete
- Department of Urology, Sanador Hospital, Bucharest, Romania
- Department of Urology, Emergency Clinical Hospital Sfântul Ioan, Bucharest, Romania
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Fayad MK, Fahmy O, Abulazayem KM, Salama NM. Retrograde intrarenal surgery versus percutaneous nephrolithotomy for treatment of renal pelvic stone more than 2 centimeters: a prospective randomized controlled trial. Urolithiasis 2021; 50:113-117. [PMID: 34807274 DOI: 10.1007/s00240-021-01289-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 11/09/2021] [Indexed: 12/23/2022]
Abstract
This study aimed at investigating the efficacy and safety of retrograde intrarenal surgery (RIRS) in treatment of renal pelvic stone larger than 2 cm against the percutaneous nephrolithotomy (PCNL). Between March 2018 and December 2020, 121 patients were randomized to undergo PCNL (60 patients), or RIRS (61 patients). Both groups were compared in terms of operative time, intraoperative complications. Postoperative complications were assessed based on Clavien-Dindo grading system. Stone-free rates were evaluated by CT scan 6 weeks after surgery. No significant difference were observed between both groups in perioperative criteria. The main operative time was slightly longer in PCNL group (105 vs 95 min, p = 0.49). Stone clearance was higher in PCNL, yet the difference was not significant. (53 patients in PCNL group had either complete clearance or residual fragments < 4 mm, compared to 49 in RIRS group (p = 0.22). Blood transfusion rate was 8.3% in PCNL compared to 1.6% in RIRS group, with a trend towards significance (p = 0.08). Post-operative fever was higher in RIRS, yet it fell just short of statistical significance (13.1% vs 5.0%, p = 0.12). Compared to PCNL, RIRS displayed acceptable efficacy with less risk of bleeding requiring transfusion. It can be applied to patients with large renal pelvic stone as an alternative to PCNL.
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Affiliation(s)
- Maged Kamal Fayad
- Department of Urology, National Institute of Urology and Nephrology, Cairo, Egypt.,Department of Urology, Saudi German Hospital, Jeddah, Saudi Arabia
| | - Omar Fahmy
- Department of Urology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
| | | | - Nashaat M Salama
- Department of Urology, Faculty of Medicine, Zagazig University, Sharkia, Egypt.,Department of Urology, Ibn Sina College Hospital, Jeddah, Saudi Arabia
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