Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61B
DIAGNOSIS; SURGERY; IDENTIFICATION
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17/00
Surgical instruments, devices or methods
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A61B17/34
Trocars; Puncturing needles
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A61B17/3494
with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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A61B17/3496
Protecting sleeves or inner probes; Retractable tips
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