Autoinjector
First Claim
Patent Images
1. An autoinjector comprising:
- a syringe comprising a body and a needle carried by the body, the syringe being movable to advance the needle for insertion along a needle insertion direction;
a case configured to receive the syringe;
a door hingedly coupled to the case and having an open position and a closed position;
a plunger slidably disposed in the case; and
two parallel compression drive springs disposed on opposite sides of the syringe and positioned between a proximal end of the case and a distal end of the plunger, the two parallel compression drive springs respectively defining two axes along which the two parallel compression drive springs are compressible and that are parallel to the needle insertion direction, the two parallel compression drive springs configured to apply a biasing force on the plunger relative to the case, and the plunger being configured to advance the syringe relative to the case and to advance a stopper of the syringe relative to the body of the syringe when the two parallel compression drive springs apply the biasing force on the plunger,wherein the door is operably coupled to the plunger in a manner such that rotation of the door from the closed position to the open position moves the plunger from a distal position in the case to a proximal position in the case and compresses the two parallel compression drive springs.
1 Assignment
0 Petitions
Accused Products
Abstract
Described is an autoinjector comprising a case, a door hingedly coupled to the case and having an open position and a closed position, a plunger slidably disposed in the case, and at least one drive spring applying a biasing force on the plunger relative to the case, wherein the door is operably coupled to the plunger, and wherein rotation of the door from the closed position to the open position moves the plunger from a distal position in the case to a proximal position in the case and compresses the at least one drive spring.
20 Citations
22 Claims
-
1. An autoinjector comprising:
-
a syringe comprising a body and a needle carried by the body, the syringe being movable to advance the needle for insertion along a needle insertion direction; a case configured to receive the syringe; a door hingedly coupled to the case and having an open position and a closed position; a plunger slidably disposed in the case; and two parallel compression drive springs disposed on opposite sides of the syringe and positioned between a proximal end of the case and a distal end of the plunger, the two parallel compression drive springs respectively defining two axes along which the two parallel compression drive springs are compressible and that are parallel to the needle insertion direction, the two parallel compression drive springs configured to apply a biasing force on the plunger relative to the case, and the plunger being configured to advance the syringe relative to the case and to advance a stopper of the syringe relative to the body of the syringe when the two parallel compression drive springs apply the biasing force on the plunger, wherein the door is operably coupled to the plunger in a manner such that rotation of the door from the closed position to the open position moves the plunger from a distal position in the case to a proximal position in the case and compresses the two parallel compression drive springs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of delivering a medicament, the method comprising:
-
placing a syringe containing the medicament into a case of an autoinjector, the syringe comprising a body, comprising a needle carried by the body, and being movable to advance the needle for insertion along a needle insertion direction; closing a door of the autoinjector to compress two parallel compression drive springs of the autoinjector, the two parallel compression drive springs being disposed on opposite sides of the syringe, being positioned between a proximal end of the case and a distal end of a plunger of the autoinjector, and the two parallel compression drive springs respectively defining two axes along which the two parallel compression drive springs are compressible and that are parallel to the needle insertion direction; and releasing the two parallel compression drive springs of the autoinjector to advance the plunger such that the syringe is advanced relative to the case of the autoinjector and a stopper of the syringe is advanced relative to the body of the syringe, thereby delivering the medicament to a patient through an injection site on the patient. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
-
22. An autoinjector comprising:
-
a case configured to receive a syringe; a door hingedly coupled to the case and having an open position and a closed position; a plunger slidably disposed in the case; and two compression drive springs positioned between a proximal end of the case and a distal end of the plunger, the two compression drive springs being parallel to each other and disposed on opposite sides of the syringe, the two compression drive springs configured to apply a biasing force on the plunger relative to the case, and the plunger being configured to advance the syringe relative to the case and to advance a stopper of the syringe relative to a body of the syringe when the two compression drive springs apply the biasing force on the plunger, wherein the door is operably coupled to the plunger in a manner such that rotation of the door from the closed position to the open position moves the plunger from a distal position in the case to a proximal position in the case and compresses the two compression drive springs.
-
Specification