{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T17:43:19Z","timestamp":1792258999539,"version":"4.4.0"},"reference-count":25,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2022,9,1]],"date-time":"2022-09-01T00:00:00Z","timestamp":1661990400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives:<\/jats:title>\n                    <jats:p>To compare the safety and effectiveness of a novel flexible vacuum-assisted ureteral access sheath (FV-UAS) and traditional ureteral access sheath (UAS) in simulating retrograde intrarenal surgery (RIRS).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>\n                      A manometric model was established in porcine kidneys to observe the change in intrarenal pressure (IRP) in the FV-UAS and traditional UAS groups at different irrigation fluid velocities of 30, 50, 80, and 100\u2009mL\/min. Establish a kidney stone model (with 0.2\u2009g, dry, \u22645\u2009mm stones) to simulate RIRS. A total of 20 porcine kidneys were randomly numbered from 1 to 20 (FV-UAS group, 1\u2009\u2212\u200910; traditional UAS group, 11\u2009\u2212\u200920). The stone volume clearance rate and operation time were compared between the two groups. (\u201c\n                      <jats:inline-formula>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\" overflow=\"scroll\">\n                          <mml:mstyle mathvariant=\"normal\">\n                            <mml:mi>S<\/mml:mi>\n                            <mml:mi>t<\/mml:mi>\n                            <mml:mi>o<\/mml:mi>\n                            <mml:mi>n<\/mml:mi>\n                            <mml:mi>e<\/mml:mi>\n                            <mml:mi>v<\/mml:mi>\n                            <mml:mi>o<\/mml:mi>\n                            <mml:mi>l<\/mml:mi>\n                            <mml:mi>u<\/mml:mi>\n                            <mml:mi>m<\/mml:mi>\n                            <mml:mi>e<\/mml:mi>\n                            <mml:mi>c<\/mml:mi>\n                            <mml:mi>l<\/mml:mi>\n                            <mml:mi>e<\/mml:mi>\n                            <mml:mi>a<\/mml:mi>\n                            <mml:mi>r<\/mml:mi>\n                            <mml:mi>a<\/mml:mi>\n                            <mml:mi>n<\/mml:mi>\n                            <mml:mi>c<\/mml:mi>\n                            <mml:mi>e<\/mml:mi>\n                            <mml:mi>r<\/mml:mi>\n                            <mml:mi>a<\/mml:mi>\n                            <mml:mi>t<\/mml:mi>\n                            <mml:mi>e<\/mml:mi>\n                          <\/mml:mstyle>\n                          <mml:mo class=\"MathClass-rel\">=<\/mml:mo>\n                          <mml:mfenced close=\")\" open=\"(\" separators=\"\">\n                            <mml:mrow>\n                              <mml:mn>1<\/mml:mn>\n                              <mml:mo class=\"MathClass-bin\">\u2212<\/mml:mo>\n                              <mml:mfrac>\n                                <mml:mrow>\n                                  <mml:mstyle mathvariant=\"normal\">\n                                    <mml:mi>R<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>s<\/mml:mi>\n                                    <mml:mi>i<\/mml:mi>\n                                    <mml:mi>d<\/mml:mi>\n                                    <mml:mi>u<\/mml:mi>\n                                    <mml:mi>a<\/mml:mi>\n                                    <mml:mi>l<\/mml:mi>\n                                    <mml:mi>s<\/mml:mi>\n                                    <mml:mi>t<\/mml:mi>\n                                    <mml:mi>o<\/mml:mi>\n                                    <mml:mi>n<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>v<\/mml:mi>\n                                    <mml:mi>o<\/mml:mi>\n                                    <mml:mi>l<\/mml:mi>\n                                    <mml:mi>u<\/mml:mi>\n                                    <mml:mi>m<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                  <\/mml:mstyle>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mstyle mathvariant=\"normal\">\n                                    <mml:mi>P<\/mml:mi>\n                                    <mml:mi>r<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>o<\/mml:mi>\n                                    <mml:mi>p<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>r<\/mml:mi>\n                                    <mml:mi>a<\/mml:mi>\n                                    <mml:mi>t<\/mml:mi>\n                                    <mml:mi>i<\/mml:mi>\n                                    <mml:mi>v<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>s<\/mml:mi>\n                                    <mml:mi>t<\/mml:mi>\n                                    <mml:mi>o<\/mml:mi>\n                                    <mml:mi>n<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                    <mml:mi>v<\/mml:mi>\n                                    <mml:mi>o<\/mml:mi>\n                                    <mml:mi>l<\/mml:mi>\n                                    <mml:mi>u<\/mml:mi>\n                                    <mml:mi>m<\/mml:mi>\n                                    <mml:mi>e<\/mml:mi>\n                                  <\/mml:mstyle>\n                                <\/mml:mrow>\n                              <\/mml:mfrac>\n                            <\/mml:mrow>\n                          <\/mml:mfenced>\n                          <mml:mo class=\"MathClass-bin\">\u00d7<\/mml:mo>\n                          <mml:mn>1<\/mml:mn>\n                          <mml:mn>0<\/mml:mn>\n                          <mml:mn>0<\/mml:mn>\n                          <mml:mstyle mathvariant=\"normal\">\n                            <mml:mi>%<\/mml:mi>\n                          <\/mml:mstyle>\n                        <\/mml:math>\n                      <\/jats:inline-formula>\n                      \u201d). Stone volume was obtained by CT pre- and postoperatively.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      FV-UAS can follow flexible ureteroscopy (f-URS) to cross the ureteropelvic junction (UPJ) and into the renal pelvis and calices. FV-UAS can actively make IRP &lt;10 cmH\n                      <jats:sub>2<\/jats:sub>\n                      O by adjusting the negative values at different irrigation fluid velocities. The mean residual stone volume of the FV-UAS\n                      <jats:italic toggle=\"yes\">vs<\/jats:italic>\n                      traditional UAS groups was 33.7\n                      <jats:italic toggle=\"yes\">vs<\/jats:italic>\n                      92.5\u2009mm\n                      <jats:sup>3<\/jats:sup>\n                      (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.017). The mean stone volume clearance rates of the FV-UAS\n                      <jats:italic toggle=\"yes\">vs<\/jats:italic>\n                      traditional UAS groups were 98.5% and 95.9%, respectively (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.017). Seven cases achieved complete stone-free status in the FV-UAS group. All patients had residual fragments postoperatively in the traditional UAS group.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>FV-UAS can follow f-URS to cross the UPJ and into the renal pelvis and calices, avoiding the interference of UPJ in controlling IRP. FV-UAS can actively control the IRP to be reduced to the desired range by adjusting the negative value under any irrigation fluid velocity. FV-UAS close to the stone can achieve complete stone-free status in RIRS.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1089\/end.2022.0004","type":"journal-article","created":{"date-parts":[[2022,3,4]],"date-time":"2022-03-04T05:20:20Z","timestamp":1646371220000},"page":"1143-1148","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":112,"title":["Novel Flexible Vacuum-Assisted Ureteral Access Sheath Can Actively Control Intrarenal Pressure and Obtain a Complete Stone-Free Status"],"prefix":"10.1177","volume":"36","author":[{"given":"Yujun","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Longhui","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liangliang","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Longlong","family":"Ke","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5053-0937","authenticated-orcid":false,"given":"Jie","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Renrui","family":"Kuang","sequence":"additional","affiliation":[{"name":"Department of Urology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,9,1]]},"reference":[{"key":"e_1_3_5_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajur.2018.06.005"},{"key":"e_1_3_5_3_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2018.0667"},{"key":"e_1_3_5_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.euf.2021.01.010"},{"key":"e_1_3_5_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-020-03210-2"},{"key":"e_1_3_5_6_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.1926.02680160035011"},{"key":"e_1_3_5_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-018-2378-4"},{"key":"e_1_3_5_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-016-1807-5"},{"key":"e_1_3_5_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-015-1713-2"},{"key":"e_1_3_5_10_2","doi-asserted-by":"publisher","DOI":"10.1177\/0391560319860654"},{"key":"e_1_3_5_11_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2017.0618"},{"key":"e_1_3_5_12_2","doi-asserted-by":"publisher","DOI":"10.1097\/JU.0000000000001836"},{"key":"e_1_3_5_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-018-2510-5"},{"key":"e_1_3_5_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0090-4295(02)02440-8"},{"key":"e_1_3_5_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(05)66527-5"},{"key":"e_1_3_5_16_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0208209"},{"key":"e_1_3_5_17_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcs.2306"},{"key":"e_1_3_5_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.juro.2016.05.094"},{"key":"e_1_3_5_19_2","doi-asserted-by":"crossref","unstructured":"Lazarus J Kaestner L. Novel syphon ureteral access sheath has potential to improve renal pressures and irrigant flow. BJU Int 2021 Sep 8.","DOI":"10.1016\/S0302-2838(22)01268-4"},{"key":"e_1_3_5_20_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2016.0411"},{"key":"e_1_3_5_21_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-018-2455-8"},{"key":"e_1_3_5_22_2","first-page":"161","article-title":"A technique to flush out stone fragments through a ureteral access sheath during retrograde intrarenal surgery","volume":"5","author":"Tapiero S","year":"2019","unstructured":"Tapiero S, , Ghamarian P, , Clayman R. A technique to flush out stone fragments through a ureteral access sheath during retrograde intrarenal surgery. J Endourol, 2019; 5:161\u2013163.","journal-title":"J Endourol"},{"key":"e_1_3_5_23_2","doi-asserted-by":"publisher","DOI":"10.1038\/nrurol.2015.74"},{"key":"e_1_3_5_24_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-018-2188-8"},{"key":"e_1_3_5_25_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2017.0125"},{"key":"e_1_3_5_26_2","doi-asserted-by":"publisher","DOI":"10.1061\/(ASCE)0733-9429(2003)129:2(110)"}],"container-title":["Journal of Endourology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1089\/end.2022.0004","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/end.2022.0004","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/end.2022.0004","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T20:14:28Z","timestamp":1777407268000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1089\/end.2022.0004"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9]]},"references-count":25,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2022,9]]}},"alternative-id":["10.1089\/end.2022.0004"],"URL":"https:\/\/doi.org\/10.1089\/end.2022.0004","relation":{"has-review":[{"id-type":"doi","id":"10.3410\/f.741783658.793595232","asserted-by":"object"}]},"ISSN":["0892-7790","1557-900X"],"issn-type":[{"value":"0892-7790","type":"print"},{"value":"1557-900X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,9]]}}}