Compact auto-injector
First Claim
1. A compact auto-injector device for delivering a medicament dose to a user, the device comprising:
- a housing retained in a cover and adapted to be displaced relative to the cover from an initial position to an armed position, wherein a height of the device in the armed position is greater than the height of the device in the initial position;
a medicament reservoir disposed in the housing adapted to contain the medicament dose, the medicament reservoir having a longitudinal axis disposed parallel to an injection contact surface of the housing that contacts an injection surface of the user during delivery of the medicament dose; and
a needle extension system comprising an injection needle coupleable to the medicament reservoir, the needle extension system adapted to automatically deploy the injection needle up to an intramuscular depth to facilitate dispensing of the medicament dose by the device to the user,wherein the device comprises an aspect ratio of width to height in a range from 1 to 10 at a time of the delivery of the medicament dose to the user.
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Accused Products
Abstract
A novel single use auto-injector for delivering a fixed amount of medicament is described. The auto-injector may include a sealed housing rotatably held in a cover. Once the auto-injector is positioned at the injection location, the user can transition the housing from a locked to an armed position. The user can then compress the sealed housing into the cover, triggering activation mechanisms that initiate the injection. A first activation mechanism engages an interlock to prevent reuse of the auto-injector. A second activation mechanism straightens and extends a curved needle to a set the exposed needle length. A third activation mechanism pierces a sealed reservoir allowing the medicament to be forced through the injection needle. Following the injection, the auto-injector expands and interlocks, retracting the needle into the auto-injector and preventing reuse.
97 Citations
32 Claims
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1. A compact auto-injector device for delivering a medicament dose to a user, the device comprising:
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a housing retained in a cover and adapted to be displaced relative to the cover from an initial position to an armed position, wherein a height of the device in the armed position is greater than the height of the device in the initial position; a medicament reservoir disposed in the housing adapted to contain the medicament dose, the medicament reservoir having a longitudinal axis disposed parallel to an injection contact surface of the housing that contacts an injection surface of the user during delivery of the medicament dose; and a needle extension system comprising an injection needle coupleable to the medicament reservoir, the needle extension system adapted to automatically deploy the injection needle up to an intramuscular depth to facilitate dispensing of the medicament dose by the device to the user, wherein the device comprises an aspect ratio of width to height in a range from 1 to 10 at a time of the delivery of the medicament dose to the user. - 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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21. A method of operating a compact simile use auto-injector device for delivering a medicament dose to a user, the method comprising the steps of:
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grasping the device comprising;
a housing retained in a cover and adapted to be displaced relative to the cover from an initial position to an armed position, wherein a height of the device in the armed position is greater than the height of the device in the initial position;a medicament reservoir disposed in the housing adapted to contain the medicament dose, the medicament reservoir having a longitudinal axis disposed parallel to an injection contact surface of the housing that contacts an injection surface of the user during delivery of the medicament dose; a needle extension system comprising an injection needle coupleable to the medicament reservoir, the needle extension system adapted to automatically deploy the injection needle up to an intramuscular depth to facilitate dispensing of the medicament dose by the device to the user; and an aspect ratio of width to height in a range from 1 to 10 at a time of the delivery of the medicament dose to the user; adhering the device to the injection surface at a desired injection location; triggering automatic deployment of the injection needle, dispensing the medicament dose through the injection needle; and thereafter, immediately removing the device from the injection surface. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification