Indication mechanism for an automatic applicator, particularly for insulin
AssigneeCopernicus Sp. Z O.O.
InventorAdam Stefanski
Life of this patent
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Abstract
The present disclosure concerns an indication mechanism for an automatic applicator, particularly for insulin or other liquid preparations, particularly for multiple injection administration of set doses of a medicine from an exchangeable container, for example for the self-application of insulin by diabetes patients. An indication mechanism for an automatic applicator, having an assembly of at least two barrels movably coupled to each other has an indication barrel mounted on the driving barrel contains only marking on its external surface and is co-axially connected to the pull-push control nut.
Claims10
An automatic applicator for liquid pharmaceutical preparations, the applicator comprising:
- an applicator housing;
- and
- an indication barrel;
- wherein the indication barrel contains a dose scale on an external surface, in the form of spirally disposed indication numerals, to indicate the set dose at an inspection window fixed in the applicator housing;
- wherein the indication barrel is mounted slidingly, co-axially and lengthwise directly on an external surface of the driving barrel in the applicator housing by a splined coupling such that there is clearance between the external wall of the driving barrel and the internal wall of the indication barrel;
- wherein the working range of the indication barrel is within the applicator housing and comprises a plurality of rotations with respect to the applicator housing;
- wherein the splined coupling comprises a plurality of keys located on the internal surface of the indication barrel and extending more than half of the length of the indication barrel, the longitudinal axis of the keys being arranged parallel to a longitudinal axis of the driving barrel and disposed such that the indication barrel and the driving barrel are maintained in the central point of rotation and coaxially with the longitudinal axis of the housing;
- wherein the driving barrel is mounted rotatably within the applicator housing;
- wherein the driving barrel is connected to a driving element in the form of a helical spring and to a mechanism for medicine dose setting that comprises a trigger used in conjunction with the helical spring;
- wherein the mechanism for medicine dose setting comprises a turning knob to set the dose, said turning knob is turn-able and substantially axially immovable;
- wherein the turning knob is connected to a clutch sleeve;
- wherein the clutch sleeve is arranged coaxially with the longitudinal axis of the housing and is covered/surrounded by more than half of the length of the helical spring.
A method for indicating a set dose and a corrected dose when using an applicator for liquid pharmaceutical preparations configured to the injection administration of set doses of a medicine, the method comprising:
- turning a turning knob;
- rotating the driving barrel clockwise to set a dose, looking in the direction of a needle, and anti-clockwise to correct the dose;
- rotating and displacing an indication barrel in a spiral movement against the inspection window in a housing;
- wherein the indication barrel contains a dose scale on an external surface;
- wherein the indication barrel is mounted slidingly, co-axially and lengthwise directly on an external surface of the driving barrel in the applicator housing between two end positions defining a working range of the indication barrel by a splined coupling such that there is clearance between the external wall of the driving barrel and the internal wall of the indication barrel;
- wherein the indication barrel can be rotated and displaced within the working range over a plurality of rotations with respect to the applicator housing;
- wherein the working range of the indication barrel is within the housing;
- wherein the splined coupling comprises a plurality of keys located on the internal surface of the indication barrel and extending more than half of the length of the indication barrel, the longitudinal axis of the keys being arranged parallel to a longitudinal axis of the driving barrel;
- wherein the driving barrel is mounted within the applicator housing and is connected to a driving element in the form of a helical spring and to a mechanism for medicine dose setting that comprises a trigger used in conjunction with the helical spring;
- wherein the turning knob is turn-able, substantially axially immovable and connected to a clutch sleeve;
- wherein the clutch sleeve is arranged coaxially with the longitudinal axis of the housing and is covered/surrounded by more than half of the length of the helical spring;
- and
- activating a trigger unit in the direction of a needle to inject the dose.
Dependencies are inferred from the claim text.