Injection device
First Claim
1. An injection device for injecting selectable amounts of a substance, comprising:
- an activating mechanism including an axially moveable operating button which can rotated in a resting position only;
a tubular drive element non-rotatably connected to the operating button;
an axially fixed and non-rotatable guiding element;
an axially moveable driven member held non-rotatably in the device; and
a rotational grid operationally between rotatable and non-rotatable components of the injection device such that the operating button can be moved two rotational directions when in the resting position whereby a selected amount of the substance to be injected can be selectively varied.
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Accused Products
Abstract
An injection device for injecting selectable amounts of a substance includes an activating mechanism including an axially moveable operating button which can rotated in a resting position only, a tubular drive element non-rotatably connected to the operating button, an axially fixed and non-rotatable guiding element, and an axially moveable driven member held non-rotatably in the device. A rotational grid is operationally between rotatable and non-rotatable components of the injection device such that the operating button can be moved two rotational directions when in the resting position whereby a selected amount of the substance to be injected can be selectively varied. For example, a dosage inadvertently selected too large by rotating the operating button too far in one direction can, in accordance with the present invention, be reduced by rotating the operating button in the opposite direction. In some embodiments, the rotational grid is adapted to produce a clicking sound when the operating button is rotated.
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Citations
23 Claims
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1. An injection device for injecting selectable amounts of a substance, comprising:
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an activating mechanism including an axially moveable operating button which can rotated in a resting position only;
a tubular drive element non-rotatably connected to the operating button;
an axially fixed and non-rotatable guiding element;
an axially moveable driven member held non-rotatably in the device; and
a rotational grid operationally between rotatable and non-rotatable components of the injection device such that the operating button can be moved two rotational directions when in the resting position whereby a selected amount of the substance to be injected can be selectively varied. - View Dependent Claims (2, 3)
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4. An injection device for administering an injectable product, in doses, from a product container provided with a piston, said injection device comprising:
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activating means which can be driven manually and comprising;
an operating button on which axial movements and rotational movements can be performed;
a drive element non-rotatably connected to the operating button and which follows the movements of the operating button; and
a driven member which can be moved in an advancing direction of the piston, wherein, when the operating button is moved axially, the drive element can be shifted in the advancing direction of the piston from a resting position to an end position and back again and this movement can be transferred onto the driven member connected to the drive element; and
a rotational grid generally between non-rotatable and rotatable parts of the device and comprising at least two mutually opposing locking elements having a plurality of co-operating locking protrusions and locking recesses, wherein the locking elements are abutted against each other by a first restorer and, when the operating button is rotated in the resting position, the locking protrusions slide relative to the locking recesses producing a sound, and wherein the rotational grid is configured such that the operating button can be moved in two rotational directions in the resting position. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of injecting a selectable amount of a substance, comprising the steps of:
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providing an injection device comprising an activating mechanism comprising an axially moveable operating button which can rotated in a resting position only, a tubular drive element non-rotatably connected to the operating button, an axially fixed and non-rotatable guiding element, an axially moveable driven member held non-rotatably in the device, and a rotational grid operationally between rotatable and non-rotatable components of the injection device such that the operating button can be moved two rotational directions when in the resting position, and rotating the operating button to select an amount of the substance to be injected, wherein if too large an amount is inadvertently selected by rotating the operating button too far in one direction, the too large an amount can be reduced by rotating the operating button in the opposite direction. - View Dependent Claims (23)
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Specification