Joseph BUTLER,Anthony Paul MORRIS,Matthew JONES,William MARSH,Samuel STEEL,Richard James Vincent AVERY
申请号：
MX2017000173
公开号：
MX2017000173A
申请日:
2015.07.01
申请国别(地区):
MX
年份:
2017
代理人:
摘要：
The present invention is generally directed to a drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The device comprises a housing (10), a dose selector (80) operable to set a dose by rotation relative to the housing (10), a number sleeve (60) arranged within the housing (10) such that at least a portion of the number sleeve (60) is visible through a first aperture (11b)in the housing (10), a piston rod (30) coupled to the housing (10) and to a drive sleeve (40) such that rotation of the drive sleeve (40) relative to the housing (10) causes the piston rod (30) to translate relative to the housing (10) and a clutch mechanism arranged between the number sleeve (60) and the drive sleeve (40). The clutch mechanism comprises a first interface (42, 62) for rotationally constraining the drive sleeve (40) and the number sleeve (60) depending on the axial position of the drive sleeve (40) and a second interface (43, 121) for rotationally constraining the drive sleeve (40) and the number sleeve (60) via a clutch element (120) depending on the axial position of the drive sleeve (40) and/or the bias of a clutch spring (130).La presente invención se dirige de manera general a un dispositivo de administración de fármacos para seleccionar y dispensar un número de dosis variables de usuario de un medicamento. El dispositivo comprende un alojamiento (10), un selector de dosis (80) operable para fijar una dosis por rotación con respecto al alojamiento (10), un manguito de números (60) dispuesto dentro del alojamiento (10) de manera que al menos una parte del manguito de números (60) es visible a través de una primera abertura (11b) en el alojamiento (10), una varilla de pistón (30) acoplada al alojamiento (10) y a un manguito de accionamiento (40) de manera que la rotación del manguito de accionamiento (40) respecto al alojamiento (10) hace a la varilla de pistón (30) trasladarse con respecto al alojamiento (10) y un mecanismo de embrag
