Setting mechanism
First Claim
1. An applicator comprising:
- a housing comprising an inspection opening,a dose setting knob coupled to the housing,a setting mechanism coupled by a connecting element to the dose setting knob,at least two coil springs comprising a driving coil spring extending in an axial direction,a non-rotatable lock connected to the housing and to the driving coil spring,a rotatable driving sleeve connected to the driving coil spring,an indicating sleeve connected movably with the rotatable driving sleeve,wherein the indicating sleeve is mounted slidingly and co-axially on the rotatable driving sleeve by a spline coupling comprising longitudinal protrusions,wherein the housing comprises a first end portion with a first external diameter and a second end portion with a second external diameter, the second external diameter being greater than the first external diameter,wherein the dose setting knob is rotatable and comprises at least one protrusion to couple with the first end portion of the housing,wherein the connecting element comprises a longitudinal sleeve and extends above the first end portion of the housing to couple with the dose setting knob,wherein the first end portion of the housing comprises at least two openings arranged non-coaxially,wherein the non-rotatable lock comprises a curved surface to cover at least a portion of the at least two openings of the first end portion of the housing,wherein the non-rotatable lock comprises a through-bore to receive the longitudinal sleeve of the connecting element, an opening to attach the driving coil spring and a wall to separate at least partially the through-bore from the opening,wherein the wall of the non-rotatable lock covers at least a portion of the longitudinal sleeve of the connecting element,wherein the longitudinal sleeve of the connecting element comprises a first end portion comprising protrusions and a second end portion to receive at least a portion of a piston rod,wherein the piston rod is coupled to the driving coil spring, the driving coil spring being configured to drive the piston rod,wherein the dose setting knob covers at least a portion of the wall of the non-rotatable lock, the curved surface of the non-rotatable lock, the first end portion of the housing and the protrusions of the first end portion of the longitudinal sleeve of the connecting element,wherein the dose setting knob, the housing, the non-rotatable lock, the driving sleeve, the indicating sleeve, the driving coil spring, the connecting element and the piston rod are arranged coaxially.
2 Assignments
0 Petitions
Accused Products
Abstract
A setting mechanism for a dosing device, in particular for a device for dosing pharmaceutical or therapeutic substances, the setting mechanism including: a controlling assembly for connecting the setting mechanism with a dose setting element of the dosing device; a driving assembly for connecting the setting mechanism with a driving element of the dosing device; a dosing assembly for connecting the setting mechanism with a dosing element of the dosing device. The controlling assembly is coupled with the dosing assembly by a spring element, which can deform from a coupled position to a decoupled position during rotation of the dose setting element. The spring element is configured to allow a displacement of the controlling assembly with respect to the dosing assembly. In the coupled position the spring element is configured to block a rotation of the controlling assembly with respect to the dosing assembly.
43 Citations
20 Claims
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1. An applicator comprising:
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a housing comprising an inspection opening, a dose setting knob coupled to the housing, a setting mechanism coupled by a connecting element to the dose setting knob, at least two coil springs comprising a driving coil spring extending in an axial direction, a non-rotatable lock connected to the housing and to the driving coil spring, a rotatable driving sleeve connected to the driving coil spring, an indicating sleeve connected movably with the rotatable driving sleeve, wherein the indicating sleeve is mounted slidingly and co-axially on the rotatable driving sleeve by a spline coupling comprising longitudinal protrusions, wherein the housing comprises a first end portion with a first external diameter and a second end portion with a second external diameter, the second external diameter being greater than the first external diameter, wherein the dose setting knob is rotatable and comprises at least one protrusion to couple with the first end portion of the housing, wherein the connecting element comprises a longitudinal sleeve and extends above the first end portion of the housing to couple with the dose setting knob, wherein the first end portion of the housing comprises at least two openings arranged non-coaxially, wherein the non-rotatable lock comprises a curved surface to cover at least a portion of the at least two openings of the first end portion of the housing, wherein the non-rotatable lock comprises a through-bore to receive the longitudinal sleeve of the connecting element, an opening to attach the driving coil spring and a wall to separate at least partially the through-bore from the opening, wherein the wall of the non-rotatable lock covers at least a portion of the longitudinal sleeve of the connecting element, wherein the longitudinal sleeve of the connecting element comprises a first end portion comprising protrusions and a second end portion to receive at least a portion of a piston rod, wherein the piston rod is coupled to the driving coil spring, the driving coil spring being configured to drive the piston rod, wherein the dose setting knob covers at least a portion of the wall of the non-rotatable lock, the curved surface of the non-rotatable lock, the first end portion of the housing and the protrusions of the first end portion of the longitudinal sleeve of the connecting element, wherein the dose setting knob, the housing, the non-rotatable lock, the driving sleeve, the indicating sleeve, the driving coil spring, the connecting element and the piston rod are arranged coaxially. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification