System for locking a dosing button in a device for the adminstration of a product to be injected
First Claim
1. A system for locking a dosing button in a device for metered administration of an injectable product, the apparatus comprisinga) a housing, including an accommodation for said product, of which a selected dose for an injection is delivered from a container by means of a pumping member, b) a drive member for said pumping member, c) a dosing button coupled to said drive member, shiftably mounted in said housing, said dosing button, when shifted from a first position into a second position by actuation of said drive member, resulting in said selected dose being delivered, this dose being selected in said first position by rotation of said dosing button from a first rotation position for zero delivery into a second rotation position, d) a first indicator sleeve, affixed to said housing, and a second indicator sleeve, rotatable with said dosing button, said indicator sleeves comprising indicator members, permitting reading off said selected dose due to the rotation position of said indicator sleeves relative to each other, and e) an anti-shifting member, permitting shifting of said dosing button from said second position back into said first position only when said indicator sleeves are located in a zero position relative to each other indicating a “
- zero”
dose, characterized in that f) said anti-shifting member is released by pressing a trigger button, and g) said second indicator sleeve releases said trigger button for external access only in said zero position of said indicator sleeves.
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Accused Products
Abstract
The present invention relates to a system for locking a dosing button in a device for the administration of a product to be injected in predetermined doses. This device comprises a body (1) with a housing (2) for the product, wherein a selected dose for injection is transported from said body out of a container (3) through a transport member (4). This device also comprises a drive member (5,7) for the transport member (4) as well as a dosing button (9) coupled to the drive member (5, 7) which is mounted so as to be capable of sliding within the body (1). The button ensures the transport of the selected dose when it is displaced from a first position into a second by actuating the drive member (5, 7). The dose is selected in the first position by rotating the dosing button (9) so that is can be moved from a first rotation position indicating that no transport is possible into a second rotation position. This device further comprises a first indicator sleeve (15) affixed to the body as well as a second indicator sleeve (17) capable of rotation together with the dosing button (9), wherein both sleeves include indication members (16, 18) for reading the selected dose according to the rotation position of said sleeves (15, 17) relative to each other. This device also comprises an anti-sliding member (11, 12, 13) which allows the dosing button to be moved from the first position into the second only when the indicator sleeves (15, 17) are placed in a zero position relative to each other thus indicating a “zero” dose. The anti-sliding member (11, 12, 13) can be unlocked by depressing on a trigger button (14), wherein the second indicator sleeve (17) releases the trigger button (14) for external access only when both indicator sleeves (15, 17) are at the zero position.
406 Citations
11 Claims
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1. A system for locking a dosing button in a device for metered administration of an injectable product, the apparatus comprising
a) a housing, including an accommodation for said product, of which a selected dose for an injection is delivered from a container by means of a pumping member, b) a drive member for said pumping member, c) a dosing button coupled to said drive member, shiftably mounted in said housing, said dosing button, when shifted from a first position into a second position by actuation of said drive member, resulting in said selected dose being delivered, this dose being selected in said first position by rotation of said dosing button from a first rotation position for zero delivery into a second rotation position, d) a first indicator sleeve, affixed to said housing, and a second indicator sleeve, rotatable with said dosing button, said indicator sleeves comprising indicator members, permitting reading off said selected dose due to the rotation position of said indicator sleeves relative to each other, and e) an anti-shifting member, permitting shifting of said dosing button from said second position back into said first position only when said indicator sleeves are located in a zero position relative to each other indicating a “ - zero”
dose, characterized in thatf) said anti-shifting member is released by pressing a trigger button, and g) said second indicator sleeve releases said trigger button for external access only in said zero position of said indicator sleeves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- zero”
Specification