A cannula of changeable length and shape
作者： Ivan R. Stefanow , Alexander R. Stefanow
DOI:
关键词: Swelling 、 Cannula 、 Mechanics 、 Toroid 、 Medical practice 、 Structural engineering 、 Penetration (firestop) 、 Small particles 、 Materials science
摘要: The invention is a cannula (2) of changeable length and shape, which can be used in medical practice other activities, require the penetration different devices into medium, vulnerable to mechanical intervention and/or without well-shaped confining walls. It created by turning end section flexible tube (1) such way that external part turns out concentrically located around initial interior tube. acquires properties solid cannula. Hardening immediately after point transition means freezing liquid contained it or vacuuming hollow channels filled with small particles, swelling toroids it, unfolding rings elements, meshing profile elements included its
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