Dispenser for discharging pharmaceutical liquids

A dispenser for discharge of a pharmaceutical liquid, comprising:

• a liquid reservoir, a pump device having a volumetrically variable pump chamber, and a delivery opening for delivery of the liquid;
• a membrane part that bounds the volumetrically variable pump chamber on one side, the membrane part being comprised at least partly of a soft plastic and altering a volume of the volumetrically variable pump chamber by displacement and/or deformation;
• a housing within which the pump device is provided;
• an actuating button displaceable relative to the housing between an unactuated starting position and an actuated final position, the actuating button for displacing or deforming the membrane part and for reducing a size of the volumetrically variable pump chamber for discharging the liquid discharge;
• the dispenser has, on an opposite side of the volumetrically variable pump chamber from the membrane part, an opposing wall into which a valve component of the pump device is inserted, wherein the valve component has at least one valve surface of an inlet valve and/or an outlet valve of the pump device;
• the membrane part, in the course of actuation, is displaceable into the volumetrically variable pump chamber in such a way that the membrane part adjoins the valve component at least in sections in an actuated final position;
• the valve component having at least one valve lip of the inlet valve or the outlet valve made of elastically deformable plastic;
• and
• the membrane part, during actuation, being displaceable into the volumetrically variable pump chamber in such a way that the membrane part adjoins the valve lip at least in sections in a final actuated position of the membrane part.

A dispenser for discharge of a pharmaceutical liquid, comprising:

• a liquid reservoir, a pump device having a volumetrically variable pump chamber, and a delivery opening for delivery of the liquid;
• a membrane part that bounds the volumetrically variable pump chamber on one side, the membrane part being comprised at least partly of a soft plastic and altering a volume of the volumetrically variable pump chamber by displacement and/or deformation;
• and
• a housing within which the pump device is provided;
• and
• an actuating button displaceable relative to the housing between an unactuated starting position and an actuated final position, the actuating button for displacing or deforming the membrane part and for reducing a size of the volumetrically variable pump chamber for discharging the liquid;
• the membrane part being secured circumferentially to a housing section of the housing in an outer edge region;
• and
• the outer edge region of the membrane part being secured to the housing section by a securing ring made of a rigid plastic, wherein the securing ring is formed in one piece with sections of the membrane part from the soft plastic together or is formed as a separate component by which the outer edge region of the membrane part is pressed circumferentially against the housing section.

A dispenser for discharge of a pharmaceutical liquid, comprising:

• a liquid reservoir, a pump device having a volumetrically variable pump chamber, and a delivery opening for delivery of the liquid;
• and
• a membrane part that bounds the volumetrically variable pump chamber on one side, the membrane part being comprised at least partly of a soft plastic and altering a volume of the volumetrically variable pump chamber by displacement and/or deformation;
• a housing within which the pump device is provided;
• and
• an actuating button displaceable relative to the housing between an unactuated starting position and an actuated final position, the actuating button for displacing or deforming the membrane part and for reducing a size of the volumetrically variable pump chamber for discharging the liquid;
• the actuating button comprising a rocker button designed to be rockable with respect to the housing by rocking about a rocker axis;
• the rocker button having a rigid button component that presses against the membrane part during rocking movement of the actuating button and hence reduces the volume of the volumetrically variable pump chamber;
• the rocker button having a connecting region by which the rocker button presses against the membrane part on actuation;
• and
• a spring device that acts on the actuating button in a force input region and which subjects the actuating button to a force in a direction toward the unactuated starting position;
• and
• the force input region and the connecting region are provided on the rocker button at different distances from the rocker axis.

A dispenser for discharge pharmaceutical liquid, comprising:

• a liquid reservoir, a pump device having a volumetrically variable pump chamber, and a delivery opening for delivery of the liquid;
• a membrane part that bounds the volumetrically variable pump chamber on one side, the membrane part being comprised at least partly of a soft plastic and altering a volume of the volumetrically variable pump chamber by displacement and/or deformation;
• a housing within which the pump device is provided;
• an actuating button displaceable relative to the housing between an unactuated starting position and an actuated final position, the actuating button for displacing or deforming the membrane part and for reducing a size of the volumetrically variable pump chamber for discharging the liquid;
• the dispenser has, on an opposite side of the volumetrically variable pump chamber from the membrane part, an opposing wall into which a valve component of the pump device is inserted, wherein the valve component has at least one valve surface of an inlet valve and/or an outlet valve of the pump device;
• the membrane part, in the course of actuation, is displaceable into the volumetrically variable pump chamber in such a way that the membrane part adjoins the valve component at least in sections in an actuated final position;
• wherein the membrane part has a middle portion that projects into the volumetrically variable pump chamber and has a shape adapted to a shape of the valve component, and/or the membrane part has a ring surface which surrounds a middle portion of the membrane part and which changes an orientation thereof at least in sections on deformation of the membrane part such that a ring region that points outward in the unactuated starting position points inward in the actuated final position;
• wherein the middle portion has a shape that narrows in a direction of the valve component and the valve component has a complementary goblet-like shape defined by an intake valve lip.