Transporting Hydrogel via Chinese Acupuncture Needles for Lesion Positioning Therapy

Abstract: Lesion positioning therapy optimizes medical treatment by directly targeting lesions. However, strong physical barriers greatly hinder its wide use. Here, the Chinese acupuncture needles (CA‐needles) with a screw‐thread structure at the tip (ST‐needle) and the hydrogel with the function of adhesive metal and loaded drug sustained‐release structure are designed, through the minimally invasive and precise positioning of lesions by ST‐needles, the dry‐wet conversion of hydrogel with absorbing fluids and swelling, and the rotation back of ST‐needles, the hydrogel is precisely positioned in the subchondral bone with physical barrier to achieve precise positioning therapy for lesions. In vitro experiments show that the ST‐needle penetrates the physical barrier of cartilage and enters the subchondral bone. Simultaneously, the hydrogel transfer efficiency of the ST‐needle (73.25%) is significantly higher than that of the CA‐needle (29.92%) due to the protective effect of the screw‐thread structure. In vivo experiments demonstrate that precise positioning in subchondral bone in osteoarthritis rats with ST‐needles effectively inhibits abnormal subchondral bone remodeling, alleviating the degeneration and degradation of cartilage. Therefore, ST‐needles achieve lesion positioning therapy through minimally invasive penetration of physical barriers, precisely positioning within lesions, and delivering hydrogel to release drugs.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Transporting Hydrogel via Chinese Acupuncture Needles for Lesion Positioning Therapy ; day:11 ; month:04 ; year:2022 ; extent:17
Advanced science ; (11.04.2022) (gesamt 17)

Creator
Lin, Feng
Wang, Zhen
Xiang, Lei
Wu, Longxi
Liu, Yupu
Xi, Xiaobing
Deng, Lianfu
Cui, Wenguo

DOI
10.1002/advs.202200079
URN
urn:nbn:de:101:1-2022041215465391103137
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:24 AM CEST

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