Lin Mao, Xue Cai, Zhongxin Hu, Yujie Zhou, Zhiwei Dai, Yilong Chen, Hua Huang, Rui Zan, Chengli Song
{"title":"Structural Design of Biodegradable Mg Gastrointestinal Anastomosis Staples for Corrosion and Mechanical Strength Analysis.","authors":"Lin Mao, Xue Cai, Zhongxin Hu, Yujie Zhou, Zhiwei Dai, Yilong Chen, Hua Huang, Rui Zan, Chengli Song","doi":"10.1021/acsabm.5c00143","DOIUrl":null,"url":null,"abstract":"<p><p>Magnesium (Mg) and its alloys, as next-generation materials for anastomosis staples, offer promising advantages such as biodegradability, biocompatibility, and reduced risk of long-term complications compared to traditional titanium materials. However, the performance of biodegradable staples is highly dependent on their structure. In this study, a biodegradable high-purity (HP) Mg staple with an optimized structure intended for small intestine anastomosis was developed and evaluated in vitro. The designed staple, with a diameter of 0.3 mm, featured an interior angle of 100° and a height of 3.8 mm. This design exhibited a maximum effective stress of approximately 170 MPa and an effective strain of 1.63. The staple could maintain structural integrity without fracture after 7 days of in vitro corrosion testing and exhibited a relatively high burst pressure of approximately 54.70 ± 2.51 mmHg. These findings indicate that the newly designed HP Mg staple combines superior corrosion resistance and anastomosis strength, confirming its potential for clinical application.</p>","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":" ","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1021/acsabm.5c00143","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}
引用次数: 0
Abstract
Magnesium (Mg) and its alloys, as next-generation materials for anastomosis staples, offer promising advantages such as biodegradability, biocompatibility, and reduced risk of long-term complications compared to traditional titanium materials. However, the performance of biodegradable staples is highly dependent on their structure. In this study, a biodegradable high-purity (HP) Mg staple with an optimized structure intended for small intestine anastomosis was developed and evaluated in vitro. The designed staple, with a diameter of 0.3 mm, featured an interior angle of 100° and a height of 3.8 mm. This design exhibited a maximum effective stress of approximately 170 MPa and an effective strain of 1.63. The staple could maintain structural integrity without fracture after 7 days of in vitro corrosion testing and exhibited a relatively high burst pressure of approximately 54.70 ± 2.51 mmHg. These findings indicate that the newly designed HP Mg staple combines superior corrosion resistance and anastomosis strength, confirming its potential for clinical application.
期刊介绍:
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.