Zwitterion modified cochlear implants resist postoperative infection and inflammation.

"Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper."

"This work was supported by the National Key Research and Development Program of China (2022YFC2402700), the 10.13039/501100001809National Natural Science Foundation of China (82271156, 52101285), the Guangdong Basic and Applied Basic Research Foundation (2022A1515012036), the "technology innovation 2030-major projects" on brain science and brain-like computing of the Ministry of Science and Technology of China (2021ZD0202603), and the Cultivation of Guangdong College Students' Scientific and Technological Innovation (“Climbing Program'' Special Funds) (pdjh2022b0064). Anning Chen: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing-original draft; Zhengao Wang: Data curation, Formal analysis, Investigation, Methodology, Validation, Funding acquisition; Writing-original draft; Hailun Chen: Methodology, Investigation, Software; Bo Pang: Investigation, Methodology, Software; Ziheng Chen: Investigation, Methodology; He Cai: Methodology, Resources; Chengyun Ning: Conceptualization, Resources, Project administration; Dong Ma: Conceptualization, Resources, Project administration, Writing-review & editing; Jie Tang: Conceptualization, Funding acquisition, Resources, Conceptualization, Project administration, Writing-review & editing; Hongzheng Zhang: Conceptualization, Funding acquisition, Project administration, Supervision, Validation, Writing-review & editing."