Improvements to a blood collection device

A - Human Necessities – 61 – B

Patent

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A61B 5/15 (2006.01)

Patent

CA 2552971

A blood collection device comprises an open ended syringe like housing (10) into which a vacutainer can be inserted. The front of the device contains a needle holder (11) and a double ended needle (12). The needle holder can be decoupled from the housing and retracted into the device but only after the vacutainer (13) has been removed and a separate needle retraction device (28) has been inserted into the open end of the housing and pushed against the inner end of the needle holder. The needle retraction device comprises a hollow body which is under vacuum and which has an open end closed by a piston (5). The piston functions to decouple the needle holder from the blood collection device and lock the needle holder and at the same time to be decoupled from the hollow body. The piston containing the needle holder and the attached contaminated needle is sucked back into the hollow body to render the needle safe.

Un dispositif de prélèvement sanguin comprend un corps (10) du type seringue à extrémité ouverte (10) dans laquelle un système de prélèvement sanguin (Vacutainer) peut être inséré. L'avant du dispositif contient un porte-aiguille (11) et une aiguille (12) à deux extrémités. Le porte-aiguille peut être découplé du corps et rentré dans le dispositif mais uniquement après l'enlèvement du Vacutainer et l'insertion dans l'extrémité ouverte du corps, d'un dispositif (28) de rétraction d'aiguille séparé, qui est poussé contre l'extrémité intérieure du porte-aiguille. Le dispositif de rétraction d'aiguille comprend un corps creux qui est en état de pression négative et qui présente une extrémité ouverte fermée par un piston (5). Le piston sert à découpler le porte-aiguille du dispositif de prélèvement sanguin et à verrouiller le porte-aiguille ainsi qu'à le découpler du corps creux. Le piston contenant le porte-aiguille et l'aiguille contaminée supportée est aspiré dans le corps creux pour que l'aiguille ne présente plus de danger.

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