Medication injection device
First Claim
Patent Images
1. An apparatus for injecting a medicament, comprising:
- (a) a housing;
(b) a syringe having a syringe barrel for holding a medicament, a plunger movable within the barrel for ejecting the medicament from the barrel, and a hollow needle communicating with the barrel for transporting the medicament from the barrel to a patient;
(c) mounting means for mounting the syringe in the housing and enabling the syringe to move from a first retracted position to a second extended position for injecting the medicament;
(d) movement and injection means for moving the syringe from the first to the second position and pushing the plunger for injecting the medicament after the syringe has moved at least toward the second position;
(e) retracting means for moving the syringe back to the first retracted position after the medicament has been injectedwherein the housing has a first portion for holding the syringe and a second portion, perpendicular to the first portion, for holding the movement and injection means.
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Accused Products
Abstract
This invention relates to an automatic injection device which, upon activation by the user, automatically extends a syringe with needle, delivers medication through the needle, and retracts the needle, thus keeping the needle hidden from view.
235 Citations
27 Claims
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1. An apparatus for injecting a medicament, comprising:
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(a) a housing; (b) a syringe having a syringe barrel for holding a medicament, a plunger movable within the barrel for ejecting the medicament from the barrel, and a hollow needle communicating with the barrel for transporting the medicament from the barrel to a patient; (c) mounting means for mounting the syringe in the housing and enabling the syringe to move from a first retracted position to a second extended position for injecting the medicament; (d) movement and injection means for moving the syringe from the first to the second position and pushing the plunger for injecting the medicament after the syringe has moved at least toward the second position; (e) retracting means for moving the syringe back to the first retracted position after the medicament has been injected wherein the housing has a first portion for holding the syringe and a second portion, perpendicular to the first portion, for holding the movement and injection means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An injection device for injection of fluid, comprising:
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a housing having an elongated section and a barrel section, said elongated section elongated in the direction of an axis, the barrel section integral with the elongated section and perpendicular to the axis, a spring attachment connection at an end of said housing along the axis, and a trigger mechanism at an opposite end of said housing along the axis; a sliding cam mechanism slidably mounted within said housing to slide in the direction of the axis, having a first cam surface, a second cam surface, a third cam surface, a drive end, and a trigger end, said trigger end designed to detachably engage said trigger mechanism; and a spring having a first end and a second end, the first end fixedly attached to said spring attachment connection, the second end fixedly connected to the drive end of the sliding cam mechanism. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An injection device for injection of fluid, comprising:
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a housing having an elongated section and a barrel section, said elongated section elongated in the direction of an axis, the barrel section integral with the elongated section and perpendicular to the axis, a spring attachment connection at an end of said housing along the axis, and a trigger mechanism at an opposite end of said housing along the axis; a sliding cam mechanism slidably mounted within said housing to slide in the direction of the axis, having a first cam surface, a second cam surface, a drive end, and a trigger end, said trigger end designed to detachably engage said trigger mechanism; and a spring having a first end and a second end, the first end fixedly attached to said spring attachment connection, the second end fixedly connected to the drive end of the sliding cam mechanism. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification