Needle-less injector
First Claim
1. A needle-less injector device comprising:
- an inner housing having a leading and a trailing end, the leading end adapted for receiving a vial that includes a nozzle for delivering a fluid held within the vial, the inner housing having a spring powered ram movable from a cocked position to an unloaded position;
an outer housing supporting the inner housing, the inner housing moving within the outer housing between a safe position and a firing position;
a tensioning spring between the inner housing and the outer housing, the tensioning spring biasing the inner housing away from the firing position towards the safe position, wherein the tensioning spring is configured to provide force to the vial such that a tip of the vial pulls adjacent skin taut when the inner housing is in the firing position; and
a trigger in the outer housing, the trigger being operable through the outer housing when the inner housing is in the firing position, the trigger cooperating with the spring powered ram to release the spring powered ram from the cocked position when the inner housing is in the firing position.
5 Assignments
0 Petitions
Accused Products
Abstract
A needle-less injector device that includes an outer housing and an inner housing that is slideably supported from the outer housing is disclosed. The inner housing supporting a vial that includes a nozzle for delivering a fluid held within the vial. A spring powered ram that is adapted for pushing a seal and plunger is mounted within inner housing. A skin tensioning spring mounted between the inner housing and the outer housing is used for pushing the leading end of the inner housing away from the outer housing. A trigger that cooperates with the spring-powered ram is used to release the ram from the cocked position only when the inner housing is in a firing position.
-
Citations
20 Claims
-
1. A needle-less injector device comprising:
-
an inner housing having a leading and a trailing end, the leading end adapted for receiving a vial that includes a nozzle for delivering a fluid held within the vial, the inner housing having a spring powered ram movable from a cocked position to an unloaded position; an outer housing supporting the inner housing, the inner housing moving within the outer housing between a safe position and a firing position; a tensioning spring between the inner housing and the outer housing, the tensioning spring biasing the inner housing away from the firing position towards the safe position, wherein the tensioning spring is configured to provide force to the vial such that a tip of the vial pulls adjacent skin taut when the inner housing is in the firing position; and a trigger in the outer housing, the trigger being operable through the outer housing when the inner housing is in the firing position, the trigger cooperating with the spring powered ram to release the spring powered ram from the cocked position when the inner housing is in the firing position. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A needle-less injector device comprising:
-
an outer housing; an inner housing within the outer housing, the inner housing being movable within the outer housing between a ready position and a firing position, the inner housing having a leading and a trailing end, the leading end being adapted for receiving a vial that includes a nozzle for delivering a fluid held within the vial, the inner housing having a spring powered ram movable from a cocked position to an unloaded position; a tensioning spring between the inner housing and the outer housing, the tensioning spring biasing the leading end of the inner housing away from the outer housing, and wherein the tensioning spring is configured to provide force to the vial such that the vial pulls adjacent skin taut when the inner housing is in the firing position; and a trigger in the outer housing, the trigger being operable through the outer housing when the inner housing is in the firing position, the trigger cooperating with the spring powered ram to release the ram from the cocked position when the inner housing is in the firing position. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for delivering a fluid, comprising the steps of:
-
providing a needle-less injector device including an inner housing having a leading and a trailing end, the leading end being adapted for receiving a vial that includes a nozzle for delivering a fluid held within the vial, the inner housing further having a spring powered ram movable from a cocked position to an unloaded position;
an outer housing for receiving the inner housing therein, the inner housing being movable within the outer housing between a safe position and a firing position;
a tensioning spring between the inner housing and the outer housing, the tensioning spring biasing the inner housing towards the safe position and wherein the tensioning spring is configured to provide force to the vial such that a tip of the vial pulls adjacent skin taut when the inner housing is in the firing position;
a trigger in the outer housing, the trigger being operable through the outer housing when the inner housing is in the firing position, the trigger cooperating with the spring powered ram to release the spring powered ram from the cocked position when the inner housing is in the firing position; and
a vial within the inner housing and being adapted for holding the fluid, the vial having an internal cavity in fluid communication with the nozzle and a skin tensioner mounted at the nozzle, the ram being connected to a plunger adapted to drive the fluid from the internal cavity of the vial through the nozzle;pressing the tensioner against the skin by pushing the outer housing towards the skin tensioner causing the outer housing to move towards the leading end of the inner housing against the skin and against a force from the tensioning spring until the inner housing is in the firing position, wherein the force from the tensioning spring pulls the adjacent skin taut in front of the nozzle; and pressing the trigger to release the spring powered ram, wherein the spring powered ram forces the plunger through the internal cavity of the vial ejecting the fluid from the vial through the nozzle. - View Dependent Claims (16, 17, 18)
-
-
19. (canceled)
-
20. A needle-less injector device comprising:
-
an inner housing having a leading and a trailing end, the leading end adapted for receiving a vial which includes a nozzle for delivering a fluid held within the vial, and wherein the inner housing includes a spring powered ram movable from a cocked position to an unloaded position; an outer housing that supports the inner housing, wherein the inner housing moves within the outer housing between a safe position and a firing position; a tensioning spring between the inner housing and outer housing, wherein the tensioning spring biases the inner housing away from the firing position; and a trigger, wherein depression of the trigger releases the spring powered ram from the cocked position, wherein the trigger may only be depressed when the inner housing is in the firing position, and wherein the trigger prevents the inner housing from moving to the firing position when force directed toward the leading end of the inner housing is applied to the trigger.
-
Specification