Device for controlling fluid delivery

Abstract

A device for controlling delivery of a fluid to a patient is disclosed having an injector device having a cylindrical body and a plunger having a head having a valve, the valve capable of opening and closing, the plunger for insertion into the cylindrical body of the injector device. A device for controlling delivery of a fluid to a patient is also disclosed having an inlet end, an outlet end, a side having a portion of elastic material, the elastic material capable of expanding or contracting with the device for insertion between an injector device and a manifold or an injector device and a catheter.

What is claimed is: 
     
         1 . A device for controlling delivery of a fluid to a patient comprising:
 an injector device having a cylindrical body having a front end having an opening through which fluid may flow into or out of the cylindrical body and a back end having an opening; and   a plunger having a plunger head having a central portion constructed of an elastic material capable of expanding when pressure is detected or contracting when pressure is removed, the plunger for insertion into the cylindrical body of the injector device, the plunger further having a partial hollow interior into which the central portion may expand when pressure is detected, the central portion for capturing fluid within the expanded elastic material and for discharging fluid from within the expanded elastic material when pressure removed.   
     
     
         2 . The device of  claim 1  wherein the injector device has a first opening through which the plunger is inserted and a second opening through which the plunger may not be inserted. 
     
     
         3 . The device of  claim 2  wherein the first opening has a diameter and the second opening has a diameter and the diameter of the first opening is greater than the diameter of the second opening. 
     
     
         4 . The device of  claim 1  wherein the elastic material of the plunger head is in an active state when pressure is removed. 
     
     
         5 . The device of  claim 1  wherein the elastic material of the plunger head is in an active state when pressure is detected. 
     
     
         6 . The device of  claim 1  further comprising a first finger grip connected to the plunger to facilitate movement of the plunger within the cylindrical body. 
     
     
         7 . The device of  claim 1  wherein the injector device is connected to a manifold device. 
     
     
         8 . The device of  claim 1  wherein the injector device further comprises a first end through which the plunger may be inserted and a second end through which fluid may flow into or out of the injector device. 
     
     
         9 . A device for controlling delivery of a fluid to a patient comprising:
 an injector device having a cylindrical body having a front end having an opening through which fluid may flow into or out of the cylindrical body and a back end having an opening; and   a plunger having a plunger head having a central portion constructed of an elastic material having a valve that is capable of opening when pressure is detected, the plunger for insertion into the cylindrical body of the injector device, the plunger further having a partial hollow interior for capturing fluid within the partial hollow interior when the valve opens.   
     
     
         10 . The device of  claim 9  wherein the valve is capable of closing when pressure is removed. 
     
     
         11 . The device of  claim 9  further comprising a second valve that is capable of opening when pressure is detected for capturing fluid within the partial hollow interior when the second valve opens. 
     
     
         12 . The device of  claim 11  wherein the second valve is capable of closing when pressure is removed. 
     
     
         13 . The device of  claim 9  further comprising a first finger grip connected to the plunger to facilitate movement of the plunger within the cylindrical body. 
     
     
         14 . The device of  claim 9  further comprising a pair of side finger grips to assist in holding the injector device. 
     
     
         15 . The device of  claim 9  wherein the injector device is connected to a manifold device. 
     
     
         16 . A device for controlling delivery of a fluid to a patient comprising:
 an injector device having a cylindrical body; and   a plunger having a head having an opening having a valve connected to a movable tooth member, and a partial hollow interior, the plunger for insertion into the cylindrical body of the injector device.   
     
     
         17 . The device of  claim 16  further comprising a stationary tooth side mated to the movable tooth member. 
     
     
         18 . The device of  claim 16  further comprising a release mechanism connected to the movable tooth member. 
     
     
         19 . The device of  claim 16  wherein movable tooth member is capable of moving in the partial hollow interior to allow fluid to enter into the partial hollow interior. 
     
     
         20 . The device of  claim 16  further comprising a stationary tooth side mated to the movable tooth member and a release mechanism connected to the movable tooth member with operation of the release mechanism for releasing the movable tooth member from the stationary tooth side.