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Bu, Yazhong; Zhang, Licheng; Sun, Guofei; Sun, Feifei; Liu, Jianheng; Yang, Fei; Tang, Peifu; Wu, Decheng
Advanced materials (Weinheim), 07/2019, Volume: 31, Issue: 28Journal Article
Medical sealant devices for in vivo hemostasis are far from satisfactory in the aged society. A major challenge is effective integration of quick hemorrhage control of the increased anticoagulated patients, high safety, and facile accessibility. Here, a well‐defined ammonolysis‐based Tetra‐PEG hydrogel sealant is developed with rapid gelation speed, strong tissue adhesion, and high mechanical strength. Introduction of cyclized succinyl ester groups into a hydrogel matrix endows the sealant with fast degradable and controllably dissolvable properties. The hydrogel possesses outstanding hemostatic capabilities even under the anticoagulated conditions while displaying excellent biocompatibility and feasibility. These results reveal that the optimized hydrogel may be a facile, effective, and safe sealant for hemorrhage control in vivo. A PEG sealant with fast and controllable degradation properties is constructed for in vivo visceral organ hemostasis, which possesses high hemostatic efficacy even under anticoagulated situations and which, even more remarkably, does not hinder the tissue healing and cause side effects.
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