SHEATH, AND SURGICAL ASSEMBLY AND USE METHOD THEREFOR

A sheath, and a surgical assembly and a use method therefor. The sheath comprises a cylindrical inner layer structure (2), a cylindrical outer layer structure (1), and a skeleton structure (3), and the inner layer structure (2), the skeleton structure (3), and the outer layer structure (1) can expan...

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Bibliographische Detailangaben
Hauptverfasser:	LIU, Yundong, YAN, Hang, ZHENG, Zhongwei, LIU, Luobin
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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Beschreibung
Zusammenfassung:	A sheath, and a surgical assembly and a use method therefor. The sheath comprises a cylindrical inner layer structure (2), a cylindrical outer layer structure (1), and a skeleton structure (3), and the inner layer structure (2), the skeleton structure (3), and the outer layer structure (1) can expand radially along with expansion of a balloon on the inner side of the inner layer structure (2); when the inner layer structure (2), the skeleton structure (3), and the outer layer structure (1) do not expand radially, the radial size of an inner channel of the inner layer structure (2) is a first radial size, and the first radial size is larger than or equal to the radial size of the balloon that does not expand; after the inner layer structure (2), the skeleton structure (3), and the outer layer structure (1) expand radially and the balloon is removed or shrunk, the radial size of the inner channel of the inner layer structure (2) is a second radial size, and the second radial size is larger than the first radial