Needle for medical use

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/32 (2006.01) A61C 5/04 (2006.01) A61M 5/34 (2006.01)

Patent

CA 2395363

The present invention is directed to a needle for medical use, which is free from breakage of a cannula even if subjected to repeated bending operations or puncture into the root of a tooth in use. The needle is characterized in that a cannula is fixed to a hub by charging a bonding adhesive in an adhesive-filling portion provided in a distal end of the hub so that a root of the cannula is located below the distal end of the hub. The distal end of the hub may be formed into a configuration provided with an annular rib extending axially and surrounding the adhesive-filling portion.

L'invention concerne une aiguille de seringue médicale dont la canule ne risque pas de se briser lorsque ladite aiguille se plie de façon répétée pendant l'emploi ou lorsqu'elle est insérée dans une région prédéterminée. Ladite aiguille comporte un embout (1) et une canule (2) collée à l'embout (1) par injection d'un adhésif dans une section d'injection (11) d'agent adhésif placée à l'extrémité avant de l'embout (1). La racine de la canule (2) est placée en dessous du niveau de l'extrémité avant de l'embout (1), laquelle extrémité peut être d'une forme dotée d'une nervure annulaire (12) s'étendant axialement de façon à entourer la section d'injection (11) d'agent adhésif. En l'occurrence, la racine (21) de la canule (2) est placée en dessous du niveau de l'extrémité avant (121) de la nervure annulaire (12).

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