Method for reconstituting an injection liquid and an injection appliance for carrying out such a method
First Claim
1. An injection device, comprising a housing (42) for receiving a container (50) comprising a liquid (49;
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226;
);
in which container (50) a piston (90) is displaceably arranged so that by means of pressure upon the distal end of said piston (90), liquid can be expelled from the container (50);
comprising a tappet (92), displaceably arranged in the housing (42), which is configured for contact against the distal end of the piston (90) and which enables transfer of a force to the piston (90) in the proximal direction;
and comprising a member (91), associated with the tappet (92) and displaceable relative thereto, which at its proximal end region can be joined to the piston (90) in such a way that it enables the transfer of a force in the proximal direction and the transfer of a force in the distal direction to the piston (90).
2 Assignments
0 Petitions
Accused Products
Abstract
An injection device has a housing (42) for receiving a container (50) having a liquid (49; 226′). In said container (50), a piston (90) is displaceably arranged so that by means of pressure upon the distal end of said piston (90), liquid can be expelled from the container (50). Arranged displaceably in the housing (42) is a tappet (92), which is configured for contact against the distal end of the piston (90) and which enables transfer of a force to the piston (90) in the proximal direction. Associated with the tappet (92) and displaceable relative thereto is a member (91) which at its proximal end region can be joined to the piston (90) in such a way that it enables the transfer of a force in the proximal direction and the transfer of a force in the distal direction to the piston (90).
205 Citations
28 Claims
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1. An injection device,
comprising a housing (42) for receiving a container (50) comprising a liquid (49; -
226;
);
in which container (50) a piston (90) is displaceably arranged so that by means of pressure upon the distal end of said piston (90), liquid can be expelled from the container (50);
comprising a tappet (92), displaceably arranged in the housing (42), which is configured for contact against the distal end of the piston (90) and which enables transfer of a force to the piston (90) in the proximal direction;
and comprising a member (91), associated with the tappet (92) and displaceable relative thereto, which at its proximal end region can be joined to the piston (90) in such a way that it enables the transfer of a force in the proximal direction and the transfer of a force in the distal direction to the piston (90). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28)
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226;
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26. A method for reconstituting an injection liquid in an injection device for subsequent use of the reconstituted injection liquid in said device,
which injection device has a housing for receiving a cartridge, equipped with a piston, for a liquid; -
a tappet for impinging upon said piston in the context of an injection; and
a member that is displaceable relative to said tappet and can be joined to the piston, having the following steps;
a) a container that contains one component for reconstitution of the injection liquid is brought into liquid communication with the cartridge;
b) by displacement of the displaceable member in a defined direction, liquid is pumped out of the cartridge into said container in order to reconstitute the injection liquid therein;
c) by displacement of the displaceable member in a direction opposite to the defined direction, the reconstituted liquid is sucked back out of the container into the cartridge;
d) the container is removed.
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Specification