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Noncompressible Hemostasis and Bone Regeneration Induced by an Absorbable Bioadhesive Self‐Healing Hydrogel
Author(s) -
Huang Weijuan,
Cheng Shi,
Wang Xiaolan,
Zhang Yu,
Chen Lingyun,
Zhang Lina
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202009189
Subject(s) - hemostasis , regeneration (biology) , bone healing , materials science , hemostatic agent , biomedical engineering , wound healing , self healing hydrogels , bioadhesive , hemostatics , surgery , medicine , drug delivery , nanotechnology , biology , microbiology and biotechnology , polymer chemistry
Bone bleeding and bone defects arising from trauma or bone tumor resection pose a great threat to patients and they are challenging problems to orthopedic surgeons. Traditional hemostatic materials are not suitable for bone fractures where compression cannot be applied, neither are they effective during surgeries where large amounts of body fluids prevent them from adhering to the large and irregular bone wound sites. This research introduces a catechol‐conjugated chitosan (CHI‐C) multi‐functional hydrogel with adhesion, self‐healing, cytocompatibility, hemocompatibility, and blood cell coagulation capacity. The hydrogel can be injected into internal and irregular bleeding sites and bone defective areas, and then rapidly self‐heals (within 2 min) to an integrated hydrogel that fully fills the defective sites and strongly sticks to bleeding areas in the presence of body fluids during surgery. In vivo experiments using a rabbit ilium bone defect model demonstrate quick hemostasis after the hydrogel is applied and the blood loss is only ¼ compared to the untreated injuries. In addition, the bone regeneration is not interfered by the hydrogel and the bone defect is no longer visible with disappearance of the hydrogel after 4 weeks. This multi‐functional hydrogel is potentially valuable for clinical applications towards tissue adhesion, hemostasis, and bone regeneration.