Injection device with cammed RAM assembly
First Claim
1. An injector, comprising:
- a trigger mechanism including;
a trigger member having a retainer portion, anda ram assembly having a ram configured to pressurize a medicament container for expelling a medicament therefrom, the ram assembly further having a trigger engagement member configured to engage the retainer portion of the trigger member in a pre-firing condition;
an energy source associated with the ram for powering the ram to expel the medicament; and
a firing-initiation member configured to cause relative movement between the trigger engagement member and the retainer portion from the pre-firing condition to a firing condition in which the trigger engagement member is released from the retainer portion to allow the energy source to fire the ram,wherein movement of the trigger engagement member is configured to cause rotation of the ram.
1 Assignment
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Accused Products
Abstract
An exemplary embodiment of the present disclosure can provide an injector including a trigger mechanism, an energy source, and a user-operable firing-initiation member. The trigger member can include a trigger member having a retainer portion, and a ram assembly having a ram configured to pressurize a medicament container for expelling a medicament therefrom and a trigger engagement member configured to engage the retainer portion of the trigger member in a pre-firing condition. The energy source can be associated with the ram for powering the ram to expel the medicament, and the user-operable firing-initiation member can be operable for causing an axial rotation between the trigger engagement member and the retainer portion from the pre-firing condition to a firing condition in which the trigger engagement member is released from the retainer portion to allow the energy source to fire the ram.
647 Citations
21 Claims
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1. An injector, comprising:
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a trigger mechanism including; a trigger member having a retainer portion, and a ram assembly having a ram configured to pressurize a medicament container for expelling a medicament therefrom, the ram assembly further having a trigger engagement member configured to engage the retainer portion of the trigger member in a pre-firing condition; an energy source associated with the ram for powering the ram to expel the medicament; and a firing-initiation member configured to cause relative movement between the trigger engagement member and the retainer portion from the pre-firing condition to a firing condition in which the trigger engagement member is released from the retainer portion to allow the energy source to fire the ram, wherein movement of the trigger engagement member is configured to cause rotation of the ram. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An injector, comprising:
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a trigger mechanism including; a trigger member having a retainer portion, and a ram assembly having a ram configured to pressurize a medicament container for expelling a medicament therefrom and at least one first camming surface, the ram assembly further having a trigger engagement member configured to engage the retainer portion of the trigger member in a pre-firing condition; an energy source associated with the ram for powering the ram to expel the medicament; and a needle guard including a firing-initiation member having at least one second camming surface configured to operatively associate with the at least one first camming surface so as to cause relative movement between the trigger engagement member and the retainer portion from the pre-firing condition to a firing condition. - View Dependent Claims (20, 21)
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Specification