Medicament delivery device

Abstract

A medicament delivery device is presented having a housing with a proximal end and a distal end, a medicament container arranged within the housing, a biased delivery member cover associated with the housing and movable in relation to the housing, a biased plunger rod associated with the medicament container and movable in relation to the housing, a tubular rotator associated with both the delivery member cover and the biased plunger rod, and a cap assembly associated with the housing, wherein a gap is defined between the proximal end of the biased plunger rod and the stopper of the medicament container when the medicament delivery device is in an assembled state, and wherein the proximal end of the biased plunger rod is in contact with the stopper of the medicament container when the medicament delivery device is in a calibrated state.

1 - 13 . (canceled) 
     
     
         14 : A medicament delivery device, comprising:
 a housing having a proximal end and a distal end;   a medicament container arranged within the housing and comprising a stopper and a delivery member;   a biased delivery member cover associated with the housing and movable in relation to the housing;   a biased plunger rod associated with the medicament container and movable in relation to the housing;   a tubular rotator associated with both the delivery member cover and the biased plunger rod; and   a cap assembly associated with the housing;   wherein a gap is defined between the proximal end of the biased plunger rod and the stopper of the medicament container when the medicament delivery device is in an assembled state; and wherein the proximal end of the biased plunger rod is in contact with the stopper of the medicament container when the medicament delivery device is in a calibrated state.   
     
     
         15 : The medicament delivery device according to  claim 14 , wherein the tubular rotator comprises a tubular body having at least one retaining member on its inner surface. 
     
     
         16 : The medicament delivery device according to  claim 15 , wherein the tubular rotator comprises a first, a second and a third retaining member on its inner surface. 
     
     
         17 : The medicament delivery device according to  claim 15 , wherein the biased plunger rod comprises a counter retaining element configured to interact with the at least one retaining member or selectively with each of the first, the second and the third retaining members. 
     
     
         18 : The medicament delivery device according to  claim 17 , wherein the biased delivery member cover comprises a guide element; and the tubular rotator comprises a tubular body arranged with a guide track on its outer surface; wherein the guide element is configured to interact with the guide track such that an axial movement of the biased delivery member cover causes the tubular rotator to rotate. 
     
     
         19 : The medicament delivery device according to  claim 18 , wherein the medicament delivery device is in the assembled state when the tubular rotator is in a first rotation position which is defined when the biased plunger rod is in an initial position in which the counter retaining element is engaged with the first retaining member; when the biased delivery member cover is in a first retracted position in which the guide element is positioned on a first distal end point of the guide track; and when the biased delivery member cover is held in said position by the cap assembly which is releasably connected to the housing. 
     
     
         20 : The medicament delivery device according to  claim 18 , wherein the medicament delivery device is in the calibrated state when the tubular rotator is in a second rotation position which is defined when the biased plunger rod is in a calibrated position in which the counter retaining element is engaged with the second retaining member, and when the biased delivery member cover is in a first extended position in which the guide element is positioned on a first proximal end point of the guide track after the cap assembly is removed from the housing. 
     
     
         21 : The medicament delivery according to  claim 19 , wherein the biased plunger rod is configured to move from the calibrated position to a final position in which the counter retaining element is engaged with the third retaining member, when the biased delivery member cover is moved from the first extended position to a second retracted position in which the guide element is positioned on a second distal end point of the guide track such that the medicament contained in the medicament container is thereby delivered to a user of the medicament delivery device. 
     
     
         22 : The medicament delivery device according to  claim 20 , wherein the biased delivery member cover is axially movable from the first retracted position to the first extended position; from the first extended position to the second retracted position; and from the second retracted position to a second extended position in which the guide element is positioned on a second proximal end point of the guide track; such that the delivery member is extended from the delivery member cover when the delivery member cover is in the first and the second retracted positions; and is covered by the delivery member cover when the delivery member cover is in the first and the second extended positions. 
     
     
         23 : The medicament delivery device according to  claim 17 , wherein the counter retaining element is configured to disengage with the second retaining member when the biased delivery member cover is axially movable from the first extended position to the second retracted position such that the tubular rotator is moved from the second rotation position to a third rotation position. 
     
     
         24 : The medicament delivery device according to  claim 22 , wherein the tubular rotator comprises a ramp surface arranged between the first and the second retaining member; wherein the counter retaining element is configured to move along the ramp surface from the first retaining member to the second retaining member. 
     
     
         25 : The medicament delivery device according to  claim 23 , wherein the axial movement of the biased delivery member cover from the first retracted position to the first extended position causes the tubular rotator to rotate from the first rotation position to the second rotation position. 
     
     
         26 : The medicament delivery device according to  claim 14 , wherein the medicament delivery device comprises a resilient member configured to proximally bias the biased delivery cover member. 
     
     
         27 : A medicament delivery device, comprising:
 a housing having a proximal end and a distal end;   a medicament container arranged within the housing and comprising a stopper and a delivery member;   a biased delivery member cover associated with the housing and movable in relation to the housing;   a spring biased plunger rod movable in relation to the housing from an assembled state to a calibrated state prior to activation of the medicament delivery device where medicament in the medicament container is delivered through the delivery member; and   a tubular rotator associated with both the delivery member cover and the biased plunger rod;   wherein when the plunger rod is in the assembled state there is a gap between a proximal end of the biased plunger rod and the stopper,   wherein when the plunger rod is in the calibrated state the proximal end of the biased plunger rod is in contact with the stopper, and   wherein axial movement of delivery member cover relative to the housing causes the plunger rod to transition from the assembled state to the calibrated state.   
     
     
         28 : The medicament delivery device of  claim 27  further comprises a cap assembly removably attached to the housing. 
     
     
         29 : The medicament delivery device of  claim 27 , wherein the wherein the rotator comprises an inner surface having a first retaining member and a second retaining member. 
     
     
         30 : The medicament delivery device of  claim 29 , wherein the plunger rod comprises a counter retaining element that that interacts with first retaining member and then subsequently with the second retaining member. 
     
     
         31 : The medicament delivery device of  claim 30 , wherein the axial movement of delivery member rotates the rotator causing the counter retaining element to disengage from the first retaining member and to engage the second retaining member. 
     
     
         32 : The medicament delivery device of  claim 29 , wherein the rotator comprises a ramp surface arranged between the first and the second retaining member such that the counter retaining element moves along the ramp surface as the rotator is rotated. 
     
     
         33 : The medicament delivery device of  claim 27 , wherein the delivery member cover moves axially from a first retracted position to a first extended position, then from the first extended position to a second retracted position, and then from the second retracted position to a second extended position.