Injection device with a time-constant delivery signal
First Claim
1. An injection device for administering a liquid product, the device comprising:
- a drive mechanism for automatically injecting the liquid product, an engaging member and a catch comprising a number of latching elements arranged along a longitudinal axis of the device, wherein at least one of the engaging member and the number of latching elements is relatively moveable to the other along the longitudinal axis to generate a haptic and/or acoustic signal comprising a number of discrete signals due to one of the catch and the engaging member being coupled to the drive mechanism such that the number of discrete signals are generated during an administering movement of the drive mechanism, wherein the drive mechanism generates a variable drive speed during the administering movement, and wherein the latching elements are a variable longitudinal distance from each other that accounts for the variable drive speed such that a time interval between each of the number of discrete signals is constant.
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Accused Products
Abstract
An injection device for administering a liquid product, the device including a drive mechanism, an engaging member and a catch including a number of latching elements, wherein at least one of the engaging member and the number of latching elements is relatively moveable to the other to generate a haptic and/or acoustic signal comprising a number of discrete signals during a relative movement, wherein one of the catch and the engaging member is coupled to the drive mechanism and the drive mechanism generates a variable drive speed during the relative movement, and wherein the latching elements are a distance (x0; x0-Δx) from each other such that a time interval between each of the number of discrete signals is constant. A method for generating a haptic and/or acoustic signal in use of an injection device is encompassed.
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Citations
24 Claims
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1. An injection device for administering a liquid product, the device comprising:
- a drive mechanism for automatically injecting the liquid product, an engaging member and a catch comprising a number of latching elements arranged along a longitudinal axis of the device, wherein at least one of the engaging member and the number of latching elements is relatively moveable to the other along the longitudinal axis to generate a haptic and/or acoustic signal comprising a number of discrete signals due to one of the catch and the engaging member being coupled to the drive mechanism such that the number of discrete signals are generated during an administering movement of the drive mechanism, wherein the drive mechanism generates a variable drive speed during the administering movement, and wherein the latching elements are a variable longitudinal distance from each other that accounts for the variable drive speed such that a time interval between each of the number of discrete signals is constant.
- View Dependent Claims (2, 3, 4, 24)
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5. An injection device for administering a liquid product, comprising:
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a) a catch which comprises at least three longitudinally arranged latching elements; and b) an engaging member which can be moved relative to and on the catch along a longitudinal axis of the device and generates a haptic and/or acoustic signal during a relative movement crossing each of the latching elements;
whereinc) one of the catch and the engaging member is coupled to a drive means for automatically injecting the liquid product, using which generates a variable drive speed during an administering movement of the drive means to generate the relative movement, wherein said relative movement occurs during a single administration; and
whereind) the latching elements have a variable longitudinal distance (x0;
x0-Δ
x) from each other that accounts for the variable drive speed such that the time intervals between the signals are constant. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for generating a haptic and/or acoustic signal in an injection device comprising a drive means, an engaging member and a catch comprising at least three latching elements, the method comprising the steps of:
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a) moving one of the engaging member and catch relative to and in contact with the other, the engaging member contacting the at least three latching elements arranged along a longitudinal axis of the injection device during an administering movement of the drive means for automatically injecting a liquid product; b) using the drive means, coupled to one of the catch and the engaging member, to produce a variable drive speed during the administering movement; and c) generating a haptic and/or acoustic signal whenever the engaging member contacts one of the latching elements, said signal being generated at a constant time interval due to a longitudinal distance from one latching element to another being reduced to account for the variable drive speed. - View Dependent Claims (23)
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Specification