{"doi":"10.1115/1.4068839","title":"Actively Deflectable Microcatheters for Vascular Selection and Steering","abstract":"Abstract A new class of endovascular microcatheters with actively steerable, deflectable tips are intended to improve navigation into branching or tortuous vessels. In this study, we compared the performance of two such devices against three conventional passive 0.021 in microcatheters in a swine model. Three operators used all five devices to access the following targets: a branching second-order renal artery from the aorta, the superior mesenteric artery (SMA) from the aorta with guidewires as an option, and a second-order hepatic artery from the celiac artery without guidewires. Failure was defined as the inability to reach the target within 240 s. Qualitative ranks for torqueability, pushability, and trackability over a wire were recorded for each device from each operator. Operators reached the renal artery target in all attempts with the deflectable microcatheters versus one failure for conventional passive devices. There was no difference in time to the renal artery target across all devices. The operators could not reach the SMA with any of the conventional passive devices, while there was only one failure with the deflectable devices. Operators were successful in reaching the hepatic artery target with the passive device in combination with guidewires, while they were successful on every attempt with deflectable devices alone. One of the deflectable devices receives the highest scores for torqueability and pushability, while two of the passive devices were rated as most trackable over a wire. Active steering provided by new-generation deflectable microcatheters has the potential to improve vascular navigation.","journal":"Journal of Medical Devices","year":2025,"id":567598,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9422,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2025-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1121384,"name":"Ammar Sarwar","orcid":"0000-0003-2254-9881","position":1,"is_corresponding":false},{"id":545512,"name":"Kei Yamada","orcid":"0000-0003-3417-8109","position":2,"is_corresponding":false},{"id":1472182,"name":"Stephen J. Tully","orcid":null,"position":3,"is_corresponding":false},{"id":1472183,"name":"Stephen Hebert","orcid":null,"position":4,"is_corresponding":false},{"id":1472184,"name":"Benjamin Merewitz","orcid":null,"position":5,"is_corresponding":false},{"id":743403,"name":"Muneeb Ahmed","orcid":"0000-0003-0323-8260","position":6,"is_corresponding":false},{"id":381213,"name":"Leo L. Tsai","orcid":"0000-0001-6941-7443","position":0,"is_corresponding":true}],"reference_count":4,"raw_metadata":null,"created_at":"2026-07-19T02:56:48.183032Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}