Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61M
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
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A61M25/0043
characterised by structural features
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A61M25/0045
multi-layered, e.g. coated
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A61M2025/0046
Coatings for improving slidability
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A61M2025/0047
the inner layer having a higher lubricity
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