Injection device comprising several coupling mechanisms
First Claim
1. A device for the administering of a fluid product, the device comprising:
- a housing;
a delivery arrangement for delivering the product from a reservoir, wherein the delivery arrangement comprises a rotatable input member and a delivery element movable along a thrust axis, which delivery element is driven by a rotation of the input member;
a drive arrangement coupled to the input member such that a rotation of the drive arrangement drives rotation of the input member about the thrust axis relative to the housing, wherein the drive arrangement is tensioned by a rotary tension movement;
a rotatable dosing arrangement for setting a dose of the product, the rotatable dosing arrangement coupled to the drive arrangement such that rotation of the dosing arrangement tensions the drive arrangement; and
a triggering arrangement movable from a position of rest into a triggering position to trigger an administering;
whereina first coupling is between the drive arrangement and the input member of the delivery arrangement, whereby the drive arrangement and the input member of the delivery arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, whereina second coupling is between the dosing arrangement and the drive arrangement, whereby the dosing arrangement and the drive arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, and whereinin the position of rest of the triggering arrangement the first coupling assumes its uncoupled position and the second coupling assumes its coupled position, so that a rotation of the dosing arrangement is able to be transferred to the drive arrangement and not to the delivery arrangement, and a movement of the triggering arrangement from the position of rest into the triggering position firstly brings about a coupling of the first coupling and thereafter an uncoupling of the second coupling, so that the drive arrangement is released and the resulting drive movement is able to be transferred to the delivery arrangement.
3 Assignments
0 Petitions
Accused Products
Abstract
An injection device including a drive unit, a delivery unit, a dosing unit, a trigger for triggering an injection, a first coupling mechanism between the drive unit and the delivery unit, and a second coupling mechanism between the dosing unit and the drive unit, wherein the drive unit is tensioned by a rotation of the dosing unit and when the drive unit is tensioned the first coupling mechanism is disengaged and the second coupling mechanism is engaged, and wherein when an injection is triggered first the first coupling mechanism is engaged and then the second coupling mechanism is disengaged. In some embodiments, the device may include a third coupling mechanism which only releases the delivery unit after the engagement and disengagement which follow a triggering.
112 Citations
16 Claims
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1. A device for the administering of a fluid product, the device comprising:
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a housing; a delivery arrangement for delivering the product from a reservoir, wherein the delivery arrangement comprises a rotatable input member and a delivery element movable along a thrust axis, which delivery element is driven by a rotation of the input member; a drive arrangement coupled to the input member such that a rotation of the drive arrangement drives rotation of the input member about the thrust axis relative to the housing, wherein the drive arrangement is tensioned by a rotary tension movement; a rotatable dosing arrangement for setting a dose of the product, the rotatable dosing arrangement coupled to the drive arrangement such that rotation of the dosing arrangement tensions the drive arrangement; and a triggering arrangement movable from a position of rest into a triggering position to trigger an administering;
whereina first coupling is between the drive arrangement and the input member of the delivery arrangement, whereby the drive arrangement and the input member of the delivery arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, wherein a second coupling is between the dosing arrangement and the drive arrangement, whereby the dosing arrangement and the drive arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, and wherein in the position of rest of the triggering arrangement the first coupling assumes its uncoupled position and the second coupling assumes its coupled position, so that a rotation of the dosing arrangement is able to be transferred to the drive arrangement and not to the delivery arrangement, and a movement of the triggering arrangement from the position of rest into the triggering position firstly brings about a coupling of the first coupling and thereafter an uncoupling of the second coupling, so that the drive arrangement is released and the resulting drive movement is able to be transferred to the delivery arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for the administering of a fluid product, the device comprising:
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a housing; a delivery arrangement for delivering the product from a reservoir, wherein the delivery arrangement comprises a rotatable input member and a delivery element movable along a thrust axis, which delivery element is driven by a rotation of the input member; a drive arrangement for producing a rotary drive movement about the thrust axis relative to the housing, the drive arrangement comprising a spiral spring that is tensioned by a rotary tension movement; a rotatable dosing arrangement for setting a dose of the product and for tensioning the drive arrangement; and a triggering arrangement movable from a position of rest into a triggering position to trigger an administering;
whereina first coupling is between the drive arrangement and the input member of the delivery arrangement, whereby the drive arrangement and the input member of the delivery arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, wherein a second coupling is between the dosing arrangement and the drive arrangement, whereby the dosing arrangement and the drive arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, and wherein in the position of rest of the triggering arrangement the first coupling assumes its uncoupled position and the second coupling assumes its coupled position, so that a rotation of the dosing arrangement is able to be transferred to the drive arrangement and not to the delivery arrangement and a movement of the triggering arrangement from the position of rest into the triggering position firstly brings about a coupling of the first coupling and thereafter an uncoupling of the second coupling, so that the drive arrangement is released and the resulting drive movement is able to be transferred to the delivery arrangement. - View Dependent Claims (10)
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11. A device for the administering of a fluid product, the device comprising:
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a housing; a delivery arrangement for delivering the product from a reservoir, wherein the delivery arrangement comprises a rotatable input member and a delivery element movable along a thrust axis, which delivery element is driven by a rotation of the input member; a drive arrangement coupled to the input member such that a rotation of the drive arrangement drives a rotation of the input member about the thrust axis relative to the housing, the drive arrangement comprising a spiral spring that is tensioned by a rotary tension movement; a rotatable dosing arrangement for setting a dose of the product the rotatable dosing arrangement coupled to the drive arrangement such that rotation of the dosing arrangement tensions the drive arrangement; and a triggering arrangement movable from a position of rest into a triggering position to trigger an administering, the triggering arrangement comprising a push button disposed on a proximal end of the housing;
whereina first coupling is between the drive arrangement and the input member of the delivery arrangement, whereby the drive arrangement and the input member of the delivery arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, wherein a second coupling is between the dosing arrangement and the drive arrangement, whereby the dosing arrangement and the drive arrangement are connected with each other to be locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, a third coupling is between the housing and the delivery arrangement, wherein the housing and the delivery arrangement are connected with each other and locked against relative rotation in a coupled position and are detached from each other in an uncoupled position, and wherein in the position of rest of the triggering arrangement the first coupling assumes its uncoupled position and the second and third couplings assume their coupled position, so that a rotation of the dosing arrangement is able to be transferred to the drive arrangement and not to the delivery arrangement, and a movement of the triggering arrangement from the position of rest into the triggering position firstly brings about a coupling of the first coupling, thereafter an uncoupling of the second coupling, and thereafter an uncoupling of the third coupling so that the drive arrangement is released and the resulting drive movement is able to be transferred to the delivery arrangement. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification