Device for delivering medicament
First Claim
1. A device for delivering predetermined doses of liquid medicament, which device is adapted to be in a medicament delivery state and in a medicament non-delivery state, comprising:
- a cartridge adapted to contain the liquid medicament and a piston sealingly and slidably arranged in the cartridge;
an energy accumulating member;
an elongated screw threaded plunger rod adapted to be arranged in an interior of the device, wherein a proximal end of the plunger rod is adapted to be in contact with the piston, such that, when a first force from the energy accumulating member is applied to the plunger rod when the device is in the medicament delivery state, the plunger rod and the piston move toward a proximal end of the cartridge with a predetermined distance and expel a predetermined dose of the liquid medicament from the cartridge;
at least one additional rod that extends along a longitudinal axis of the device and that is in contact with the plunger rod, wherein a distal end of the at least one additional rod extends beyond a distal end of the device, and the at least one additional rod is adapted, upon activation, to be moved by a second force in the proximal direction of the device.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a device for the delivery of predetermined doses of liquid medicament to a patient, which medicament is intended to be inhaled by the patient or intended to be injected into the body of the patient. The device is adapted to be in a medicament delivery state and in a medicament non-delivery state. When the device is in a medicament delivery state, said device is adapted to drive a piston into a cartridge containing the liquid medicament to be delivered, with a force that is above or equal to a predetermined minimum force value and below a predetermined maximum force value. The minimum force value is the lowest force value needed to deliver the predetermined dose and the maximum force value is the first force value at which it exists a risk of damaging the cartridge or the components of the device.
57 Citations
19 Claims
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1. A device for delivering predetermined doses of liquid medicament, which device is adapted to be in a medicament delivery state and in a medicament non-delivery state, comprising:
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a cartridge adapted to contain the liquid medicament and a piston sealingly and slidably arranged in the cartridge; an energy accumulating member; an elongated screw threaded plunger rod adapted to be arranged in an interior of the device, wherein a proximal end of the plunger rod is adapted to be in contact with the piston, such that, when a first force from the energy accumulating member is applied to the plunger rod when the device is in the medicament delivery state, the plunger rod and the piston move toward a proximal end of the cartridge with a predetermined distance and expel a predetermined dose of the liquid medicament from the cartridge; at least one additional rod that extends along a longitudinal axis of the device and that is in contact with the plunger rod, wherein a distal end of the at least one additional rod extends beyond a distal end of the device, and the at least one additional rod is adapted, upon activation, to be moved by a second force in the proximal direction of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device for delivering predetermined doses of liquid medicament, which device is adapted to be in a medicament delivery state and in a medicament non-delivery state, comprising:
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a cartridge adapted to contain the liquid medicament and a piston sealingly and slidably arranged in the cartridge; an energy accumulating member; an elongated screw threaded plunger rod adapted to be arranged in an interior of the device, wherein a proximal end of the plunger rod is adapted to be in contact with the piston, such that, when a first force from the energy accumulating member is applied to the plunger rod when the device is in the medicament delivery state, the plunger rod and the piston move toward a proximal end of the cartridge with a predetermined distance and expel a predetermined dose of the liquid medicament from the cartridge; at least one additional rod that extends along a longitudinal axis of the device and that is in contact with the plunger rod, wherein a distal end of the at least one additional rod extends beyond a distal end of the device, and the at least one additional rod is adapted, upon activation, to be moved by a second force in the proximal direction of the device; and a dose setting member adapted to be rotated by at least one predetermined step when the device is in the medicament non-delivery state, wherein rotation of the dose setting member by one step increases a set dose by one step and also increases the accumulated energy in the energy accumulating member by one step. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification