Drug delivery system for administering an adjustable preset dose

Abstract

An embodiment of the present invention provides an apparatus for setting a dose of a drug in a syringe having a plunger, comprising an outer housing and an inner housing adapted for encircling the syringe, such that the inner housing is positioned within the outer housing to set the dose of the drug. In an embodiment, the apparatus further comprises a dosage indicator disposed on the inner housing and the outer housing further comprises an opening for viewing the dosage indicator.

1 . An apparatus for setting a dose of a drug in a syringe having a plunger, the apparatus comprising: 
 an outer housing;    an inner housing adapted for encircling the syringe; and    wherein the inner housing is positioned within the outer housing to set the dose of the drug.    
     
     
         2 . The apparatus of  claim 1 , wherein the inner housing further comprises a dosage indicator.  
     
     
         3 . The apparatus of  claim 2 , wherein the outer housing further comprises an opening for viewing the dosage indicator.  
     
     
         4 . The apparatus of  claim 2 , further comprising 
 a locking assembly connected to the inner housing and the outer housing for fixing the relative positions of the inner housing and the outer housing;    wherein the dosage indicator is viewable through an opening in the outer housing.    
     
     
         5 . The apparatus of  claim 1 , further comprising a dosage indicator disposed on the outer housing.  
     
     
         6 . The apparatus of  claim 2 , wherein the dosage indicator provides a predetermined number of dosages of the drug in increments ranging from approximately 0.25 ml to approximately 10 ml.  
     
     
         7 . The apparatus of  claim 2 , wherein the dosage indicator provides a predetermined number of dosages of the drug in increments ranging from approximately 0.5 mg to approximately 10 mg.  
     
     
         8 . The apparatus of  claim 1 , further comprising a limiter attached to the inner housing for fixing at least one distance that the plunger can move within the syringe.  
     
     
         9 . The apparatus of  claim 1 , further comprising a limiter attached to the outer housing for fixing at least one distance that the plunger can move within the syringe.  
     
     
         10 . The apparatus of  claim 1 , wherein the plunger is substantially cylindrical in shape.  
     
     
         11 . The apparatus of  claim 1 , further comprising a grip connected to the outer housing.  
     
     
         12 . The apparatus of  claim 11 , wherein the grip is employed to adjust the amount of the dosage of the drug.  
     
     
         13 . The apparatus of  claim 11 , wherein the grip is employed to deliver the dosage to a patient.  
     
     
         14 . The apparatus of  claim 1 , further comprising a grip connected to the inner housing.  
     
     
         15 . The apparatus of  claim 14 , wherein the grip is employed to adjust the amount of the dosage of the drug.  
     
     
         16 . The apparatus of  claim 14 , wherein the grip is employed to deliver the dosage to a patient.  
     
     
         17 . The apparatus of  claim 1 , further comprising a removable covering attached to the syringe.  
     
     
         18 . The apparatus of  claim 1 , wherein the outer housing comprises two portions that are substantially cylindrical in shape.  
     
     
         19 . The apparatus of  claim 1 , further comprising: 
 threadings disposed on the exterior of the inner housing; and    threadings disposed on the interior of the outer housing;    wherein the threadings on the inner and outer housing are slidably disposed within each other and the relative axial positions of the inner and outer housings are adjustable by rotation of the outer housing relative to the inner housing.    
     
     
         20 . The apparatus of  claim 19 , wherein the threadings on the inner and outer housings are predetermined such that a desired predetermined dosage corresponds to a predetermined amount of rotation of the outer housing relative to the inner housing.  
     
     
         21 . The apparatus of  claim 1 , further comprising a locking assembly attached to the inner housing and the syringe for fixing the relative positions of the syringe and the inner housing.  
     
     
         22 . The apparatus of  claim 1 , further comprising a locking assembly connected to the inner housing and the outer housing for fixing the relative positions of the inner housing and the outer housing.  
     
     
         23 . The apparatus of  claim 1 , wherein the drug comprises an anti-seizure medication.  
     
     
         24 . The apparatus of  claim 23 , wherein the anti-seizure medication consists essentially of diazepam.