Device for separating the connecting end of a hypodermic...

A - Human Necessities – 61 – M

Patent

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Details

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

Patent

CA 2405976

The connecting end (2a) of the hypodermic needle is so designed that it can be attached to and then disconnected from the tip (3) of an injection instrument (4) by pressure, that is, an axial tractional force exerted between the said neele (2) and the said injection instrument (4). The extraction device has an opening (17) delim-ited by locking elements (13) forming one piece with elastic pieces (10b, 12) so as to allow its diameter to vary between a minimum diameter and a maximum diameter at least equal to the diameter of the said connecting end (2a) and at least one piece (13a) associated with the said locking elements (13) for the purpose of converting an axial force exerted on the said piece (13a) into at least one radial component capable of being applied to the said elastic pieces (10b, 12) so as to deform them radially in order to increase the diameter of the said opening (17) when axial pressure is exerted by the said connecting end (2a).

La présente invention concerne l'élément de connexion (2a) d'une aiguille sous-cutanée, qui peut être fixée et déconnectée de la tête (3) d'un instrument d'injection (4) par pression, c'est à dire, par une force de traction axiale exercée entre cette aiguille (2) et cet instrument d'injection (4). Le dispositif d'extraction possède une ouverture (17) délimitée par des éléments de verrouillage (13) constituant une pièce avec des pièces (10b, 12) élastiques de façon à permettre à son diamètre de varier entre un diamètre minimum et un diamètre maximum au moins égal au diamètre de l'élément de connexion (2a) et au moins une pièce (13a) associée à ces éléments de verrouillages (13) dans le but de transformer une force axiale exercée sur cette pièce (13a) en au moins une composante radiale qui peut être appliquée à ces pièces élastiques (10b, 12) de façon à les déformer radialement afin d'augmenter le diamètre de l'ouverture (17) lorsque la pression axiale est exercée par cet élément de connexion (2a)

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