CPC A61M 5/2033 (2013.01) [A61M 5/148 (2013.01); A61M 5/14248 (2013.01); A61M 5/282 (2013.01); A61M 5/283 (2013.01); A61M 5/322 (2013.01); A61M 2005/14256 (2013.01); A61M 2005/14272 (2013.01); A61M 2005/14506 (2013.01); A61M 2005/2073 (2013.01); A61M 2005/31518 (2013.01)] | 17 Claims |
1. A medicament delivery device comprising:
a housing;
a reservoir for medicament disposed in the housing, the reservoir comprising a collapsible container;
a dispensing member that is moveable relative to the housing from a first position to a second position to dispense medicament from the reservoir when the reservoir contains medicament;
a first biasing member configured to urge the dispensing member from the first position to an intermediate position to dispense medicament from the reservoir; and
a second biasing member configured to urge the dispensing member from the intermediate position to the second position to dispense medicament from the reservoir;
wherein a needle is movable from a retracted position, in which the needle is fully disposed within the housing, to an extended position, in which the needle projects from the housing, and wherein movement of the dispensing member from the first position to the intermediate position moves the needle from the retracted position to the extended position.
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17. A method of dispensing medicament from a medicament delivery device that has a housing, a reservoir disposed in the housing, a needle coupled to a dispensing member, and first and second biasing members, the method comprising:
releasing the first biasing member to exert a force on the dispensing member to move the dispensing member from a first position to an intermediate position to dispel medicament from the reservoir, wherein movement of the dispensing member from the first position to the intermediate position moves the needle from a retracted position, in which the needle is fully disposed within the housing, to an extended position, in which the needle projects from the housing; and, then,
releasing the second biasing member to exert a force on the dispensing member to move the dispensing member from the intermediate position to a second position to dispel medicament from the reservoir, wherein the reservoir comprises a collapsible container.
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