{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T13:33:55Z","timestamp":1791639235027,"version":"4.3.4"},"reference-count":159,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:00:00Z","timestamp":1777593600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This review summarizes the base materials, joining methods, filler materials, and principal technical challenges in endoscope joining fabrication, and proposes practical strategies to improve joint reliability under clinical constraints. We conducted a comprehensive search in multiple databases, including Web of Science, Google Scholar, patent databases, Scopus databases, and Medline (via PubMed), for articles on the joining for precision endoscope fabrication, covering the period from 1950 to 2026. We employed the combinations of keywords, \u201cendoscopy\u201d, \u201cminimally invasive surgery\u201d, \u201cwelding\u201d, \u201cjoining\u201d, \u201csealing\u201d, \u201csoldering\u201d, \u201cbonding\u201d, and \u201cbrazing\u201d. Approximately 500 references were retrieved. After excluding duplicates and irrelevant studies, 158 publications met the inclusion criteria. Data on base materials, joining, processes, filler materials, and technical issues related to sterilization, corrosion, and microstructural evolution were extracted and analyzed. Endoscopes are multi-material systems, involving metallic biomaterials (stainless steels (SSs), titanium alloys, nickel-based alloys, etc.), optical functional materials (glass, sapphire, quartz, etc.), engineering plastics, ceramics, composite materials, and coatings. Joining, sealing, and functional integration have been achieved via adhesive bonding, laser soldering, laser brazing, wave soldering, reflow soldering, fusion welding, and other joining techniques. The main challenges include how to reliably join highly mismatched dissimilar materials, how to fabricate low-residual-stress joints, and how to increase the long-term resistance to sterilization-induced degradation and thermal aging over repeated 100\u2013200 \u00b0C thermal cycles. Conventional joining techniques struggle to balance mechanical integrity, joint hermeticity, and long-term stability under such harsh cyclic conditions. The resulting joints may suffer surface yellowing, interfacial debonding, microcracking, delamination, or progressive property degradation during service. We propose the following three strategies to achieve reliable, low-residual-stress, and sterilization-resistant joining of dissimilar materials for endoscopes: (1) A synergistic design that combines thin-film engineering (including evaporation, sputtering, and electroplating) with silver anti-oxidation layers is proposed to reduce residual stresses and to enhance the joint hermeticity. (2) To develop principles for the selection of multi-joining processes to achieve the multi-material integration and functional assembly of dissimilar material components. (3) To develop the laser-based joining methods (fusion, brazing, or braze-welding) for precision control of heat input, bonding quality, and the least damage to the heat-sensitive components.<\/jats:p>","DOI":"10.3390\/s26092828","type":"journal-article","created":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T09:33:17Z","timestamp":1777627997000},"page":"2828","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Progress and Challenges in Joining for Precision Endoscope Fabrication"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7711-4431","authenticated-orcid":false,"given":"Peiquan","family":"Xu","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohao","family":"Zheng","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2411-3846","authenticated-orcid":false,"given":"Leijun","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziyi","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Integrated Circuits, Chongqing University of Posts and Telecommunications, Chongqing 400065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1136\/bmj.1.223.345","article-title":"The Endoscope as an Aid to the Diagnosis and Treatment of Disease","volume":"1","author":"Cruise","year":"1865","journal-title":"Br. Med. J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1146\/annurev.med.55.091902.105248","article-title":"The Impact of Minimally Invasive Surgical Techniques","volume":"55","author":"Darzi","year":"2004","journal-title":"Annu. Rev. Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"S493","DOI":"10.1007\/s00464-006-0078-4","article-title":"Milestones in Endoscope Design for Minimally Invasive Urologic Surgery: The Sentinel Role of a Pioneer","volume":"20","author":"Fuchs","year":"2006","journal-title":"Surg. Endosc."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"e73","DOI":"10.1002\/bjs.9710","article-title":"Natural-Orifice Transluminal Endoscopic Surgery","volume":"102","author":"Atallah","year":"2015","journal-title":"Br. J. Surg."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1038\/s41575-022-00701-y","article-title":"Artificial Intelligence and Automation in Endoscopy and Surgery","volume":"20","author":"Chadebecq","year":"2023","journal-title":"Nat. Rev. Gastroenterol. Hepatol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"511","DOI":"10.3340\/jkns.2024.0227","article-title":"Full-Endoscopic Spine Surgery: Its Roles and Limitations","volume":"68","author":"Ahn","year":"2025","journal-title":"J. Korean Neurosurg. Soc."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"629","DOI":"10.1016\/S0140-6736(80)91122-8","article-title":"Ultrasonic Endoscope","volume":"315","author":"Dimagno","year":"1980","journal-title":"Lancet"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/S0016-5107(88)71368-1","article-title":"Functional Imaging for the Analysis of the Mucosal Blood Hemoglobin Distribution Using Electronic Endoscopy","volume":"34","author":"Tsuji","year":"1988","journal-title":"Gastrointest. Endosc."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"818","DOI":"10.1001\/archsurg.1973.01350180052016","article-title":"Diagnostic Colonoscopy and Colonoscopic Polypectomy","volume":"106","author":"Berci","year":"1973","journal-title":"Arch. Surg."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"706","DOI":"10.1053\/j.gastro.2004.06.050","article-title":"Confocal Laser Endoscopy for Diagnosing Intraepithelial Neoplasias and Colorectal Cancer in Vivo","volume":"127","author":"Kiesslich","year":"2004","journal-title":"Gastroenterology"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Rao, A., Sultany, A., Gondal, A., Chakinala, R.C., Bharadwaj, H.R., Chandan, S., Ali, H., Malik, S., Alsakarneh, S., and Dahiya, D.S. (2025). Green Endoscopy: A Review of Global Perspectives on Environmental Sustainability of Gastrointestinal Endoscopy. J. Clin. Med., 14.","DOI":"10.3390\/jcm14113936"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1297","DOI":"10.1038\/nm.2823","article-title":"Simultaneous Functional Photoacoustic and Ultrasonic Endoscopy of Internal Organs In Vivo","volume":"18","author":"Yang","year":"2012","journal-title":"Nat. Med."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1117","DOI":"10.1016\/j.gie.2017.02.022","article-title":"The Role of Endoscopy in Subepithelial Lesions of the GI Tract","volume":"85","author":"Faulx","year":"2017","journal-title":"Gastrointest. Endosc."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"807","DOI":"10.1016\/j.gie.2020.06.040","article-title":"History of Artificial Intelligence in Medicine","volume":"92","author":"Kaul","year":"2020","journal-title":"Gastrointest. Endosc."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1006\/cviu.1997.0613","article-title":"Shape Reconstruction from an Endoscope Image by Shape from Shading Technique for a Point Light Source at the Projection Center","volume":"66","author":"Okatani","year":"1997","journal-title":"Comput. Vis. Image Underst."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1056\/NEJM188712011172203","article-title":"The Endoscopic Instruments of Joseph Leiter of Vienna and the Present Development of Endoscopy","volume":"117","author":"Newell","year":"1887","journal-title":"Boston Med. Surg. J."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Kaur, M., Lane, P.M., and Menon, C. (2020). Endoscopic Optical Imaging Technologies and Devices for Medical Purposes: State of the Art. Appl. Sci., 10.","DOI":"10.3390\/app10196865"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"090801","DOI":"10.1117\/1.OE.64.9.090801","article-title":"Lens Design Strategies for Miniature Scanning Fiber Endoscopes","volume":"64","author":"Rocha","year":"2025","journal-title":"Opt. Eng."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"507","DOI":"10.2147\/MDER.S550187","article-title":"Multi-Center Evaluation of Optical Degradation Patterns in Rigid Endoscopes: A Data-Driven Approach","volume":"18","author":"Noordmans","year":"2025","journal-title":"Med. Devices Evid. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"725","DOI":"10.1067\/mge.2000.105724","article-title":"Wireless endoscopy","volume":"51","author":"Gong","year":"2000","journal-title":"Gastrointest. Endosc."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1016\/j.sna.2005.05.016","article-title":"Image compression in video radio transmission for capsule endoscopy","volume":"123\u2013124","author":"Turgis","year":"2005","journal-title":"Sens. Actuators A Phys."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"744","DOI":"10.1177\/000348947408300608","article-title":"Application of Color Television in Bronchoesophagology","volume":"83","author":"Rayl","year":"1974","journal-title":"Ann. Otol. Rhinol. Laryngol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"124","DOI":"10.1007\/BF01418801","article-title":"Endoscopic evacuation of intracerebral haemorrhage. High-tec-surgical treatment\u2014A new approach to the problem?","volume":"74","author":"Auer","year":"1985","journal-title":"Acta Neurochir."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"581","DOI":"10.1007\/s00464-003-9132-7","article-title":"Experimental assessment of a new mechanical endoscopic solosurgery system: Endofreeze","volume":"19","author":"Arezzo","year":"2005","journal-title":"Surg. Endosc."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1016\/j.ijsu.2012.05.009","article-title":"A Technical Review of Flexible Endoscopic Multitasking Platforms","volume":"10","author":"Yeung","year":"2012","journal-title":"Int. J. Surg."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1011","DOI":"10.1055\/s-2006-944779","article-title":"A Novel Double-Channel Therapeutic Endoscope (\u201cR-scope\u201d) Facilitates Endoscopic Submucosal Dissection of Superficial Gastric Neoplasms","volume":"38","author":"Yonezawa","year":"2006","journal-title":"Endoscopy"},{"key":"ref_27","unstructured":"Storz\u2013Endoskope, K. (2011). Anubiscope for Endolumenal Surgery, Karl Storz."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2630","DOI":"10.1007\/s00464-013-2818-6","article-title":"The ANUBISCOPE\u00ae flexible Platform Ready for Prime Time: Description of the First Clinical Case","volume":"27","author":"Perretta","year":"2013","journal-title":"Surg. Endosc."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1375","DOI":"10.1007\/s11695-013-0937-8","article-title":"Early Experience with the Incisionless Operating Platform\u2122 (IOP) for the Treatment of Obesity: The Primary Obesity Surgery Endolumenal (POSE) Procedure","volume":"23","author":"Mata","year":"2013","journal-title":"Obes. Surg."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1016\/j.gie.2008.03.294","article-title":"Use of the Direct Drive Endoscopic System (DDES) for In-Vivo Mucosal Resection in a Porcine Model","volume":"67","author":"Rothstein","year":"2008","journal-title":"Gastrointest. Endosc."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1002\/rcs.179","article-title":"Robotic System for No-Scar Gastrointestinal Surgery","volume":"4","author":"Phee","year":"2008","journal-title":"Int. J. Med. Robot."},{"key":"ref_32","unstructured":"Abbott, D.J., Becke, C., Rothstein, R.I., and Peine, W.J. (November, January 29). Design of an Endoluminal NOTES Robotic System. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), San Diego, CA, USA."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1016\/j.mechatronics.2009.12.001","article-title":"A Practical Approach to the Design and Control of Active Endoscopes","volume":"20","author":"Sars","year":"2010","journal-title":"Mechatronics"},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Zhou, Z., Yang, J., Luo, M., Lou, H., Runciman, M., and Mylonas, G. (2025, January 19\u201325). A Soft Robot Attachment with Variable Stiffness Effector for Advanced Endoscopic Surgical Tasks. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Hangzhou, China.","DOI":"10.1109\/IROS60139.2025.11246065"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"114413","DOI":"10.1016\/j.fusengdes.2024.114413","article-title":"Manufacturing, Installation, Commissioning and Operation of Endoscopes for Monitoring Water-Cooled Divertor in Wendelstein 7-X","volume":"203","author":"Fellinger","year":"2024","journal-title":"Fusion Eng. Des."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"897","DOI":"10.1016\/j.jmapro.2025.02.087","article-title":"Microcrackless Weld Formation Under Unilateral Melting in Laser Transmission Welding of Sapphire and Stainless Steel","volume":"141","author":"Yuan","year":"2025","journal-title":"J. Manuf. Process."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"17348","DOI":"10.1016\/j.ceramint.2026.02.321","article-title":"Interfacial Mechanisms and Microstructural Evolution in Nanosecond Laser Transmission Welding of Stainless Steel and Quartz Glass","volume":"52","author":"Zhao","year":"2026","journal-title":"Ceram. Int."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"21384","DOI":"10.1016\/j.ceramint.2023.03.267","article-title":"Micro-Welding of Sapphire and Metal by Femtosecond Laser","volume":"49","author":"Pan","year":"2023","journal-title":"Ceram. Int."},{"key":"ref_39","unstructured":"Sun, S.C. (2026). Numerical Simulation Analysis of 316L Stainless Steel\/Glass Brazed Joints for Endoscopes. [Master\u2019s Thesis, Shanghai University of Engineering Science]."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Yangi, K., Gulick, D.W., Calderon Valero, C.E., Gok, E., D\u2019Saachs, M.C., Bassi, I., On, T.J., and Preul, M.C. (2025). Telemetric Intracranial Pressure Monitoring in Patients with Hydrocephalus: A Systematic Literature Review. Front. Pediatr., 13.","DOI":"10.3389\/fped.2025.1632216"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"537","DOI":"10.1016\/j.ajic.2025.02.003","article-title":"Unseen Threats: Lumens 2.0 Study Reveals the Hidden Challenges of Cleaning Lumened Surgical Instruments","volume":"53","author":"Ofstead","year":"2025","journal-title":"Am. J. Infect. Control"},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Richter, A., Steinmann, T., Rosenthal, J.C., and Rupitsch, S.J. (2024). Advances in Real-Time 3D Reconstruction for Medical Endoscopy. J. Imaging, 10.","DOI":"10.3390\/jimaging10050120"},{"key":"ref_43","unstructured":"Merkle, R. (2015). Endoskopaufbau und Handhabung, Aesculap Fleximed. Available online: https:\/\/www.drweigert.com\/fileadmin\/Downloads\/Messen_Veranstaltungen\/2015-10-29_Endoskopaufbau_und_Handhabung_Garmisch_01.pdf."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"937","DOI":"10.1016\/j.jocn.2005.04.006","article-title":"A Stainless Steel Sheath for Endoscopic Surgery and its Application in Surgical Evacuation of Putaminal Haemorrhage","volume":"12","author":"Chen","year":"2005","journal-title":"J. Clin. Neurosci."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1016\/j.ijadhadh.2011.10.005","article-title":"Withstanding Frequent Steam Sterilisation: Innovative Technique to Bond Glass and Stainless Steel Composites in Biotechnology and Endoscopic Medicine","volume":"33","author":"Stammen","year":"2012","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_46","unstructured":"Van Der Plaats, L.D. (2019). The Development of an Objective Test Method to Evaluate the (Optical) Quality of Rigid Endoscopes at the CSSD. [Master\u2019s Thesis, Delft University of Technology]."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"237","DOI":"10.5946\/ce.2023.011","article-title":"22-Gauge Co-Cr versus Stainless-Steel Franseen Needles for Endoscopic Ultrasound-Guided Tissue Acquisition in Patients with Solid Pancreatic Lesions","volume":"57","author":"Tanisaka","year":"2024","journal-title":"Clin. Endosc."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Dimitrakakis, E., Dwyer, G., Newall, N., Khan, D.Z., Marcus, H.J., and Stoyanov, D. (2024). Handheld Robotic Device for Endoscopic Neurosurgery: System Integration and Pre-Clinical Evaluation. Front. Robot. AI, 11.","DOI":"10.3389\/frobt.2024.1400017"},{"key":"ref_49","first-page":"223","article-title":"Biocompatibility of 17-4 PH Stainless Steel Foam for Implant Applications","volume":"21","author":"Mutlu","year":"2011","journal-title":"Biomed. Mater. Eng."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1007\/978-3-319-23832-6_11","article-title":"Active Bending Electric Endoscope Using Shape Memory Alloy Wires","volume":"Volume 38","author":"Bleuler","year":"2016","journal-title":"New Trends in Medical and Service Robots"},{"key":"ref_51","unstructured":"Verathon Medical (2014). GlideScope Titanium Reusable Video Laryngoscopes, Verathon Inc.. Available online: https:\/\/anestesiar.org\/wp-content\/uploads\/2015\/03\/glidescope-titanium-reutilizable.pdf."},{"key":"ref_52","unstructured":"Khachin, V.N., Anokhin, S.V., Pushin, V.G., Kuznetsov, A.V., Pinkin, V.F., and Juravlev, V.N. (1992). Extraction Devices. (WO1992016153A1)."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Hellwig, D., and Bauer, B.L. (1998). Innovative Instruments for Endoscopic Neurosurgery. Minimally Invasive Techniques for Neurosurgery, Springer.","DOI":"10.1007\/978-3-642-58731-3"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"274","DOI":"10.1007\/s00464-016-4968-9","article-title":"An Application Research on a Novel Internal Grasper Platform and Magnetic Anchoring Guide System (MAGS) in Laparoscopic Surgery","volume":"31","author":"Shang","year":"2017","journal-title":"Surg. Endosc."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"0013","DOI":"10.34133\/cbsystems.0013","article-title":"A Novel Robotic Bronchoscope System for Navigation and Biopsy of Pulmonary Lesions","volume":"4","author":"Duan","year":"2023","journal-title":"Cyborg. Bionic. Syst."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1007\/BF00561204","article-title":"Residual Tensions in Drawn Tubes Used as Tubular Parts of Medical Instruments. First Communication","volume":"2","author":"Vainer","year":"1968","journal-title":"Biomed. Eng."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/j.vgie.2016.12.001","article-title":"Devices for Use with EUS","volume":"2","author":"Hwang","year":"2017","journal-title":"Videogie"},{"key":"ref_58","unstructured":"Keehan, E., and Gergely, V. (2010). Catheter and Specialty Needle Alloys. Proceedings of the Material & Processes for Medical Devices Conference & Exposition, Minneapolis, MN, USA, 10\u201312 August 2009, ASM International."},{"key":"ref_59","unstructured":"Snay, J.P., and Mackey, T.E. (2009). Medical Device Made with a Super Alloy. (US20090118577A9)."},{"key":"ref_60","unstructured":"Moen, M.D., Moen, M.R., and Moen, M.R. (2021). Disposable Light Handle for Endoscopy. (US20210369091A1)."},{"key":"ref_61","unstructured":"Marchal, H.M., and Marchal, M.T. (1964). Device for the Detection of Thermogenous Focusses. (US3489137A)."},{"key":"ref_62","unstructured":"Zhu, P., Liu, H., Guo, X., Yu, J., Dong, W., Liu, L., Huang, J., Wang, Z., Pan, Z., and Zhou, W. (2025). Choledochoscope Miniature Lens Structure with Magnetic Control Steering Function. (CN120938316A)."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1038\/s41551-025-01462-0","article-title":"Tethered Optoacoustic and Optical Coherence Tomography Capsule Endoscopy for Label-Free Assessment of Barrett\u2019s Oesophageal Neoplasia","volume":"10","author":"Li","year":"2026","journal-title":"Nat. Biomed. Eng."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"346","DOI":"10.37349\/edht.2024.00033","article-title":"Review on Endoscopic Capsules","volume":"2","author":"Manolescu","year":"2024","journal-title":"Explor. Digit. Health Technol."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"2416861","DOI":"10.1002\/adma.202416861","article-title":"Broadband Near-Infrared Fibers Derived from Nanocrystal-Glass Composites for Miniature Arrays Light Sources","volume":"37","author":"Sun","year":"2025","journal-title":"Adv. Mater."},{"key":"ref_66","unstructured":"Sweeney, K., Worzella, S., Brandon, L., Budde, A., Knight, T., Anderson, A.G., and Tompkins, W. (2006). Enhanced Safety and Visualization for Endoscopic Sinus Surgery, University of Wisconsin\u2013Madison. Report BME 400."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"7374","DOI":"10.1038\/s41467-025-62413-6","article-title":"Gastrointestinal Neuroprosthesis for Motility and Metabolic Neuromodulation","volume":"16","author":"Srinivasan","year":"2025","journal-title":"Nat. Commun."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1016\/j.snb.2015.04.063","article-title":"Development of a Wireless Swallowable Capsule with Potentiostatic Electrochemical Sensor for Gastrointestinal Track Investigation","volume":"218","author":"Caffrey","year":"2015","journal-title":"Sens. Actuat. B-Chem."},{"key":"ref_69","doi-asserted-by":"crossref","unstructured":"Li, C., Zhao, Y., Qi, L., Xu, B., Yue, L., Zhu, R., and Li, C. (2024). Comparison of Biomechanical Effects of Polyetheretherketone (PEEK) Rods and Titanium Rods in Lumbar Long-Segment Instrumentation: A Finite Element Study. Front. Bioeng. Biotechnol., 12.","DOI":"10.3389\/fbioe.2024.1416046"},{"key":"ref_70","doi-asserted-by":"crossref","unstructured":"Biron, M. (2018). Thermoplastics and Thermoplastic Composites, Elsevier.","DOI":"10.1016\/B978-0-08-102501-7.00009-6"},{"key":"ref_71","doi-asserted-by":"crossref","unstructured":"Wu, Z., Hadi Sadati, S.M., Vartholomeos, P., Abdelaziz, M.E.M., Temelkuran, B., Petrou, G., Booth, T., Shapey, J., Ahmed, A., and Bergeles, C. (2025, January 19\u201325). Vine4Spine: A Steerable Tip-Growing Robot with Contact Force Estimation for Navigation in the Spinal Subarachnoid Space. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Hangzhou, China.","DOI":"10.1109\/IROS60139.2025.11247721"},{"key":"ref_72","unstructured":"Futaki, Y. (2006). Electronic Endoscope and Method of Assembling the Electronic Endoscope. (JP3780177B2)."},{"key":"ref_73","unstructured":"Mizuki, N., and Hosoda, C. (2018). Joining Structure and Biopsy Needle. (JP6302754B2)."},{"key":"ref_74","unstructured":"Higuma, M., Futatsugi, Y., Nakamura, T., Yoshimoto, Y., Kishi, T., Kura, Y., Tatsuno, Y., Yamaguchi, T., Aono, S., and Nakamura, I. (2012). Endoscope Capable of Being Autoclaved. (USRE43281E1)."},{"key":"ref_75","unstructured":"Han, M., Jiao, K., Shi, Q.Y., and He, J.H. (2024). Endoscope Assembly and Endoscope System. (WO2024138685A1)."},{"key":"ref_76","unstructured":"Wieters, M., and Schnitger, J. (2018). Electrical Connection Piece for an Endoscope and Method for Establishing an Electrical Connection in an Endoscope. (US20180006389A1)."},{"key":"ref_77","unstructured":"Kojima, K., and Fujimori, N. (2009). Endoscope Apparatus. (US20090244259A1)."},{"key":"ref_78","doi-asserted-by":"crossref","unstructured":"Roa, C.F., Ch\u00e9rin, E., Singh, N., Yin, J., Boyes, A., Foster, F.S., and Demore, C.E.M. (2024). Development of a Small-Footprint 50 MHz Linear Array: Fabrication and Micro-Ultrasound Imaging Demonstration. Sensors, 24.","DOI":"10.3390\/s24061847"},{"key":"ref_79","doi-asserted-by":"crossref","unstructured":"Arcadio, F., Marzano, C., Del Prete, D., Zeni, L., and Cennamo, N. (2023). Analysis of Plasmonic Sensors Performance Realized by Exploiting Different UV-Cured Optical Adhesives Combined with Plastic Optical Fibers. Sensors, 23.","DOI":"10.3390\/s23136182"},{"key":"ref_80","doi-asserted-by":"crossref","unstructured":"He, H., Wei, X., He, Y., Liang, Y., Fang, Y., and Peng, W. (2023). Plasmonic Resonance Coupling of Nanodisk Array\/Thin Film on the Optical Fiber Tip for Integrated and Miniaturized Sensing Detection. Sensors, 23.","DOI":"10.3390\/s23084163"},{"key":"ref_81","doi-asserted-by":"crossref","unstructured":"Pishchik, V., Lytvynov, L.A., and Dobrovinskaya, E.R. (2009). Sapphire: Material, Manufacturing, Applications, Springer.","DOI":"10.1007\/978-0-387-85695-7"},{"key":"ref_82","doi-asserted-by":"crossref","unstructured":"Rutala, W.A., and Weber, D.J. (2015). Disinfection, Sterilization, and Control of Hospital Waste. Mandell, Douglas, and Bennett\u2019s Principles and Practice of Infectious Diseases, Elsevier.","DOI":"10.1016\/B978-1-4557-4801-3.00301-5"},{"key":"ref_83","unstructured":"Yamamoto, K. (2013). Distal End Optical Unit for Electronic Endoscope. (US8360967B2)."},{"key":"ref_84","unstructured":"Buerk, A., Heseler, S., and Teichtmann, E. (2010). Endoscope with a Window and Process to Manufacture. (US20100324372A1)."},{"key":"ref_85","doi-asserted-by":"crossref","unstructured":"Sudarevic, B., Troya, J., Fuchs, K.-H., Hann, A., Vereczkei, A., and Meining, A. (2023). Design and Development of a Flexible 3D-Printed Endoscopic Grasping Instrument. Appl. Sci., 13.","DOI":"10.3390\/app13095656"},{"key":"ref_86","doi-asserted-by":"crossref","unstructured":"Sadi, F., Holthausen, J., Stallkamp, J., and Siegfarth, M. (2024). Development of Novel Hydraulic 3D Printed Actuator Using Electrorheological Fluid for Robotic Endoscopy. Actuators, 13.","DOI":"10.20944\/preprints202402.1526.v1"},{"key":"ref_87","unstructured":"Harada, T. (2025). Forming Method of Vertical Table and Endoscope. (CN114222653B)."},{"key":"ref_88","unstructured":"Gill, T.J., and McDonald, J.E. (2022). Portable Imaging System Employing a Miniature Endoscope. (US11484189B2)."},{"key":"ref_89","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.tgie.2005.12.007","article-title":"Tissue Adhesives: A Review","volume":"8","author":"Ryou","year":"2006","journal-title":"Tech. Gastrointest. Endosc."},{"key":"ref_90","unstructured":"Miller, S. (2025). Accessory Device for an Endoscopic Device. (EP4593680A2)."},{"key":"ref_91","unstructured":"Maeda, K., and Makino, Y. (2025). Image Pickup Unit and Endoscope. (US20250343982A1)."},{"key":"ref_92","doi-asserted-by":"crossref","first-page":"1393","DOI":"10.1007\/s00542-024-05655-6","article-title":"Research on Analytical Models for Reducing Friction Heat for Flexible Ultrasonic Propagation using Stranded Wire","volume":"30","author":"Kawasumi","year":"2024","journal-title":"Microsyst. Technol."},{"key":"ref_93","doi-asserted-by":"crossref","unstructured":"Olson, D.L., Siewert, T.A., Liu, S., and Edwards, G.R. (1993). Soldering. ASM Handbook, Volume 6: Welding, Brazing, and Soldering, ASM International.","DOI":"10.31399\/asm.hb.v06.9781627081733"},{"key":"ref_94","unstructured":"Scott, D.D., Shafer, D.C., Brichard, D., and Herzlinger, P.M. (2023). Hermetically Sealed Stereo Endoscope of a Minimally Invasive Surgical System. (US11716455B2)."},{"key":"ref_95","unstructured":"Chen, M.A., Wang, X.H., and Chen, J.H. (2010). Modern Welding Technology, Chemical Industry Press. [6th ed.]."},{"key":"ref_96","unstructured":"Hoenle Adhesives GmbH (2026). Biocompatible Adhesives for Medical Devices, Hoenle Adhesives GmbH. Technical Brochure."},{"key":"ref_97","first-page":"e230003","article-title":"Evaluation of Sterilisation Techniques for 3D-Printed Implantable Devices","volume":"1","author":"Stewart","year":"2023","journal-title":"Pharm. Pharmacol. Res."},{"key":"ref_98","unstructured":"(2025). Biological evaluation of medical devices\u2014Part 1: Requirements and General Principles for the Evaluation of Biological Safety within a Risk Management Process (Standard No. ISO 10993-1:2025)."},{"key":"ref_99","doi-asserted-by":"crossref","first-page":"e23","DOI":"10.1016\/j.ajic.2016.02.022","article-title":"New developments in disinfection and sterilization","volume":"44","author":"Wallace","year":"2016","journal-title":"Am. J. Infect. Control."},{"key":"ref_100","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3390\/gastroent15010001","article-title":"Enhancing the Quality of Upper Gastrointestinal Endoscopy: Current Indicators and Future Trends","volume":"15","author":"Ferrari","year":"2024","journal-title":"Gastroenterol. Insights"},{"key":"ref_101","doi-asserted-by":"crossref","unstructured":"Su, C.C., Chou, C.K., Mukundan, A., Karmakar, R., Sanbatcha, B.F., Huang, C.W., Weng, W.C., and Wang, H.C. (2025). Capsule Endoscopy: Current Trends, Technological Advancements, and Future Perspectives in Gastrointestinal Diagnostics. Bioengineering, 12.","DOI":"10.3390\/bioengineering12060613"},{"key":"ref_102","doi-asserted-by":"crossref","unstructured":"Jiang, C., Zhang, X., Zhang, X., Li, X., Xu, S., and Li, Y. (2024). Integrating Bioinspired Natural Adhesion Mechanisms into Modified Polyacrylate Latex Pressure-Sensitive Adhesives. Polymers, 16.","DOI":"10.3390\/polym16172404"},{"key":"ref_103","doi-asserted-by":"crossref","unstructured":"Gao, S., Geng, H., Ge, Y., and Zhang, W. (2024). ARM Cortex Simulation Design for Trajectory Curves Evaluation of Collaborative Robots\u2019 Tungsten Inert Gas Welding. Processes, 12.","DOI":"10.3390\/pr12061095"},{"key":"ref_104","doi-asserted-by":"crossref","first-page":"477","DOI":"10.1007\/s42823-023-00547-7","article-title":"The Epoxy Resin System: Function and Role of Curing Agents","volume":"34","author":"Aziz","year":"2024","journal-title":"Carbon Lett."},{"key":"ref_105","doi-asserted-by":"crossref","first-page":"4277","DOI":"10.1007\/s00464-025-11802-5","article-title":"Polyurethane-Based Tissue Adhesive for Sealing Pancreatic Anastomosis: A Pig Model","volume":"39","author":"Wiebe","year":"2025","journal-title":"Surg. Endosc."},{"key":"ref_106","doi-asserted-by":"crossref","first-page":"2105595","DOI":"10.1002\/advs.202105595","article-title":"High-Precision Printing of Complex Glass Imaging Optics with Precondensed Liquid Silica Resin","volume":"9","author":"Hong","year":"2022","journal-title":"Adv. Sci."},{"key":"ref_107","doi-asserted-by":"crossref","unstructured":"Walker, C., Beckford, K., Tkaczyk, T., and Applegate, B.E. (February, January 30). A 3D-Printed Reflective Lens Fabricated Via 2-Photon Polymerization for Flexible Catheter Endoscopy. Proceedings of the SPIE LASE 2024, Laser 3D Manufacturing XI, San Francisco, CA, USA.","DOI":"10.1117\/12.3017667"},{"key":"ref_108","doi-asserted-by":"crossref","first-page":"393","DOI":"10.1016\/j.ajem.2025.07.058","article-title":"Rectal Insertion of Expanding Polyurethane Foam Requiring Sigmoid Colectomy: A Case Report with Surgical and Toxicologic Implications","volume":"98","author":"Nelson","year":"2025","journal-title":"Am. J. Emerg. Med."},{"key":"ref_109","doi-asserted-by":"crossref","unstructured":"Dillard, D.A. (2023). Biomedical Adhesives: Qualification, Specification, Quality Control, and Risk Mitigation. Advances in Structural Adhesive Bonding, Elsevier Ltd.","DOI":"10.1016\/B978-0-323-91214-3.00018-1"},{"key":"ref_110","doi-asserted-by":"crossref","first-page":"4070","DOI":"10.1021\/acsapm.1c00578","article-title":"Polyurea Networks from Moisture-Cure, Reaction-Setting, Aliphatic Polyisocyanates with Tunable Mechanical and Thermal Properties","volume":"3","author":"Soprunyuk","year":"2021","journal-title":"ACS Appl. Polym. Mater."},{"key":"ref_111","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/j.matpr.2022.11.342","article-title":"A Review on Recent Development and Application of Radiation Curing","volume":"82","author":"Wali","year":"2023","journal-title":"Mater. Today Proc."},{"key":"ref_112","doi-asserted-by":"crossref","first-page":"369","DOI":"10.1002\/9781394315086.ch10","article-title":"Initiating Systems for Curing Anaerobic Adhesives. Critical Review","volume":"9","author":"Aronovich","year":"2025","journal-title":"Prog. Adhes. Adhes."},{"key":"ref_113","unstructured":"Yamashita, T., Kawachi, M., Muramatsu, A., Mitani, T., Yamashita, T., Nishiwaki, T., and Mizobuchi, K. (2013). Imaging Apparatus and Electronic Endoscope. (JP5303404B2)."},{"key":"ref_114","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1002\/eej.21030","article-title":"Development of Minimally Invasive Medical Tools Using Laser Processing on Cylindrical Substrates","volume":"176","author":"Haga","year":"2011","journal-title":"Electr. Eng. Jpn."},{"key":"ref_115","unstructured":"Daly, K.R. (1978). Method for Laser Soldering. (US4327277A)."},{"key":"ref_116","unstructured":"Chang, D.U. (1983). Method of Laser Soldering. (US4531044A)."},{"key":"ref_117","unstructured":"Walvoord, J., and Woody, L. (2001). Laser Soldering Method. (US6278078B1)."},{"key":"ref_118","doi-asserted-by":"crossref","first-page":"114731","DOI":"10.1016\/j.matchar.2025.114731","article-title":"Low-Temperature Instantaneous Large-Area Laser Soldering of Al\/Cu Flexible Printed Circuit Board Lap Joints with Exceptional Fracture Energy Absorption Capability: Toward Carbon-Neutral Energy Reduction Assembly","volume":"221","author":"Jo","year":"2025","journal-title":"Mater. Charact."},{"key":"ref_119","doi-asserted-by":"crossref","first-page":"100115","DOI":"10.1016\/j.mtadv.2020.100115","article-title":"Low Melting Point Solders Based on Sn, Bi, and In Elements","volume":"8","author":"Liu","year":"2020","journal-title":"Mater. Today Adv."},{"key":"ref_120","doi-asserted-by":"crossref","first-page":"1084","DOI":"10.1016\/j.surfcoat.2007.07.061","article-title":"Adhesion Energy of Cu\/Polyimide Interface in Flexible Printed Circuits","volume":"202","author":"Kamiya","year":"2007","journal-title":"Surf. Coat. Technol."},{"key":"ref_121","doi-asserted-by":"crossref","unstructured":"Puttlitz, K.J., and Stalter, K.A. (2004). Handbook of Lead-Free Solder Technology for Microelectronic Assemblies, Marcel Dekker, Inc.","DOI":"10.1201\/9780203021484"},{"key":"ref_122","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1016\/j.msea.2012.09.038","article-title":"Effect of Silver and Indium Addition on Mechanical Properties and Indentation Creep Behavior of Rapidly Solidified Bi\u2013Sn Based Lead-Free Solder Alloys","volume":"560","author":"Shalaby","year":"2013","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_123","unstructured":"Shafiq, I., Chan, Y.C., Xu, S., and Li, Q.Q. (2011, January 12\u201314). Electromigration Study of Nano Al Doped Lead-Free Sn-58Bi on Cu and Au\/Ni\/Cu Ball Grid Array (BGA) Packages. Proceedings of the 18th European Microelectronics & Packaging Conference (EMPC), Brighton, UK."},{"key":"ref_124","doi-asserted-by":"crossref","first-page":"2705","DOI":"10.1007\/s11664-013-2620-1","article-title":"Microstructure, Thermal and Wetting Properties of Sn-Bi-Zn Lead-Free Solder","volume":"42","author":"Chen","year":"2013","journal-title":"J. Electron. Mater."},{"key":"ref_125","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1016\/S1003-6326(14)63046-6","article-title":"Effect of Sb Content on Properties of Sn-Bi Solders","volume":"24","author":"Zhang","year":"2014","journal-title":"Trans. Nonferr. Met. Soc. China"},{"key":"ref_126","doi-asserted-by":"crossref","first-page":"610","DOI":"10.1016\/j.jallcom.2009.11.017","article-title":"Effect of La Addition on the Interfacial Intermetallics and Bonding Strengths of Sn-58Bi Solder Joints with Au\/Ni\/Cu Pads","volume":"491","author":"Shiue","year":"2010","journal-title":"J. Alloys Compd."},{"key":"ref_127","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1007\/BF02659725","article-title":"Solder Joint Reliability of Indium-Alloy Interconnection","volume":"24","author":"Shimizu","year":"1995","journal-title":"J. Electron. Mater."},{"key":"ref_128","doi-asserted-by":"crossref","first-page":"10824","DOI":"10.1007\/s10853-020-04691-7","article-title":"Microstructure and Mechanical Properties of the In\u201348Sn\u2013xAg Low-Temperature Alloy","volume":"55","author":"Han","year":"2020","journal-title":"J. Mater. Sci."},{"key":"ref_129","doi-asserted-by":"crossref","first-page":"3805","DOI":"10.1007\/s10853-014-8092-8","article-title":"Effects of Zinc on the Interfacial Reactions of Tin\u2013Indium Solder Joints with Copper","volume":"49","author":"Lin","year":"2014","journal-title":"J. Mater. Sci."},{"key":"ref_130","unstructured":"Schmid, R.K., and Doesburg, J.C. (2011). Material and Method of Manufacturing of a Solder Joint with High Thermal Conductivity and High Electrical Conductivity. (US8034195B2)."},{"key":"ref_131","unstructured":"Hata, S., Matsushima, N., and Fujinaga, T. (2013). Electronic Components. (JP5235796B2)."},{"key":"ref_132","unstructured":"Liu, D., Wolak, E.L., and Cutillas, S. (2014). High Reliability Laser Emitter Modules. (US8644357B2)."},{"key":"ref_133","doi-asserted-by":"crossref","unstructured":"Mallick, P.K. (2021). Joining for Lightweight Vehicles. Materials, Design and Manufacturing for Lightweight Vehicles, Woodhead Publishing. [2nd ed.].","DOI":"10.1016\/B978-0-12-818712-8.00008-2"},{"key":"ref_134","doi-asserted-by":"crossref","first-page":"041016","DOI":"10.1115\/1.4035034","article-title":"Laser Autogenous Brazing of Biocompatible, Dissimilar Metals in Tubular Geometries","volume":"139","author":"Satoh","year":"2017","journal-title":"J. Manuf. Sci. Eng."},{"key":"ref_135","unstructured":"Barnes, A.F.C., Elliott, V.B., and Strauss, R.S. (1955). Improvements Relating to Soldering Components to Printed Circuits. (GB798701A), GB Patent."},{"key":"ref_136","doi-asserted-by":"crossref","first-page":"015006","DOI":"10.1088\/2058-8585\/adb0da","article-title":"Reflow Soldering for Low-Cost Electronics Using Near-Infrared LEDs","volume":"10","author":"Wenger","year":"2025","journal-title":"Flex. Print. Electron."},{"key":"ref_137","doi-asserted-by":"crossref","first-page":"5859","DOI":"10.1007\/s10845-024-02505-0","article-title":"ReflowNet: ConvLSTM-Based Direct Reflow Oven Recipe Optimization Framework","volume":"36","author":"Kataoka","year":"2025","journal-title":"J. Intell. Manuf."},{"key":"ref_138","doi-asserted-by":"crossref","first-page":"258","DOI":"10.1108\/SSMT-08-2024-0052","article-title":"Statistical-Based Simulation and Reflow Profile Optimization for Improving Self-Alignment Performance\u2014An Experimental Study","volume":"37","author":"Zhang","year":"2025","journal-title":"Solder. Surf. Mt. Technol."},{"key":"ref_139","unstructured":"Machado, J., Trojanowska, J., Ottaviano, E., Xavior, M.A., Val\u00e1\u0161ek, P., and Basova, Y. (2025). Soldering Process Analysis of Printed Circuit Boards Applying Surface Mount Technology (SMT) and Through-Hole Technology (THT). Innovations in Mechanical Engineering IV, Springer. Lecture Notes in Mechanical Engineering."},{"key":"ref_140","doi-asserted-by":"crossref","first-page":"477","DOI":"10.1016\/j.jmapro.2025.08.017","article-title":"Effect of Laser Cleaning of Cu Pads on Wettability and Interface Microstructure of Laser Soldering","volume":"152","author":"Zhao","year":"2025","journal-title":"J. Manuf. Process."},{"key":"ref_141","doi-asserted-by":"crossref","first-page":"114637","DOI":"10.1016\/j.matchar.2024.114637","article-title":"Controlling the Solidification Speed toward Enhanced Failure Energy of Sn-0.7Cu System Solder Ball-Attaches with Alloy Design Using Instantaneous Large-Area Laser Soldering","volume":"219","author":"Kim","year":"2025","journal-title":"Mater. Charact."},{"key":"ref_142","doi-asserted-by":"crossref","first-page":"6622","DOI":"10.1016\/j.jmrt.2024.10.251","article-title":"Properties of Sn-3.0Ag-0.5Cu Solder Joints under Various Soldering Conditions: Reflow vs. Laser vs. Intense Pulsed Light Soldering","volume":"33","author":"Noh","year":"2024","journal-title":"J. Mater. Res. Technol."},{"key":"ref_143","unstructured":"Rudischhauser, J. (1997). Endoscope with at Least One Glued and Additionally Welded End Window. (US6328691B1)."},{"key":"ref_144","unstructured":"Cai, K. (2023). Research on Stripping and Soldering Process of Ultra-Fine Electronic Wire Harness. [Master\u2019s Thesis, Hefei University of Technology]."},{"key":"ref_145","doi-asserted-by":"crossref","first-page":"690","DOI":"10.1016\/j.medengphy.2010.04.011","article-title":"Welding Methods for Joining Thermoplastic Polymers for the Hermetic Enclosure of Medical Devices","volume":"32","author":"Amanata","year":"2010","journal-title":"Med. Eng. Phys."},{"key":"ref_146","doi-asserted-by":"crossref","unstructured":"Rau, A.C. (2010). Design of a Multifunctional Forceps for Use in Endoscopic Surgery. [Master\u2019s Thesis, The Pennsylvania State University].","DOI":"10.1115\/1.3442789"},{"key":"ref_147","unstructured":"Rose, J., and Sch\u00f6ler, U. (2015). Endoscope and Endoscope Tip. (WO2015032471A2)."},{"key":"ref_148","unstructured":"Zheng, W., Wang, L.Q., Shao, B.G., Tian, Q., and Yang, Q. (2024). Endoscope Head Structure and Production Method Thereof."},{"key":"ref_149","unstructured":"Wang, X., Jiao, J., Wang, F., and Zhang, W. (2018). Encapsulation Method of Stainless Steel Tube and Quartz Plate for Endoscopes. (CN105982633B)."},{"key":"ref_150","unstructured":"Takiguchi, K., and Takeshi, H. (2015). Laser Welding Methods for Endoscopes and Laser Welding Components for Endoscopes. (CN103201066A)."},{"key":"ref_151","unstructured":"Li, W., Chen, G., Peng, G., and Ning, H. (2021). Laser Welding and Sealing Process for Capsule Endoscope Shells. (WO2021109405A1)."},{"key":"ref_152","unstructured":"Matsuo, S., and Umeda, T. (2012). Endoscope and Attaching Method of Connection Mouth Ring to End of Endoscopic Flexible Tube. (CN101467865B)."},{"key":"ref_153","first-page":"20","article-title":"Fiber Lasers Boost Medical Device Production","volume":"27","author":"Mayerhofer","year":"2012","journal-title":"Ind. Laser Solut."},{"key":"ref_154","unstructured":"Navok, E., and Christopher, A.C. (2013). Hermetic Endoscope Assemblage. (US8568300B2)."},{"key":"ref_155","doi-asserted-by":"crossref","unstructured":"Zhou, Y., and Breyen, M.D. (2013). The Effects of Sterilization on Medical Materials and Welded Devices. Joining and Assembly of Medical Materials and Devices, Woodhead Publishing.","DOI":"10.1533\/9780857096425"},{"key":"ref_156","unstructured":"Adams, R.D. (2021). Environmental (Durability) Effects. Adhesive Bonding, Woodhead Publishing. [2nd ed.]."},{"key":"ref_157","doi-asserted-by":"crossref","first-page":"2780","DOI":"10.1016\/j.cgh.2022.02.060","article-title":"Prospective Study Assessing Impact of Ethylene Oxide Sterilization on Endoscopic Ultrasound Image Quality","volume":"20","author":"Majumder","year":"2022","journal-title":"Clin. Gastroenterol. Hepatol."},{"key":"ref_158","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1016\/j.ajic.2022.08.026","article-title":"The Utility of Lighted Magnification and Borescopes for Visual Inspection of Flexible Endoscopes","volume":"51","author":"Ofstead","year":"2023","journal-title":"Am. J. Infect. Control"},{"key":"ref_159","doi-asserted-by":"crossref","unstructured":"Barmouz, M., Azarhoushang, B., Kintzel, W., and Bucher, V. (2025). Long-Term Impact of Sterilization Cycles on the Surface and Mechanical Integrity of Medical-Grade Silicone. J. Manuf. Mater. 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