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US 5,540,664 AGranted
Reloadable automatic or manual emergency injection system
AssigneeWashington Biotech Corporation
InventorRonald E. Wyrick
Life of this patent
Estimating the term…
Abstract
A reloadable automatic or manually usable medicine injection apparatus having a barrel which receives a syringe subassembly. The syringe subassembly includes an ampule for housing fluid medication, a needle, a plunger stopper, and plunger shaft which allow removal and manual use. The injection apparatus includes a driver for forcing the syringe subassembly to inject the needle and displace fluid medication. The injection apparatus preferably includes a trigger handle, sheath remover, and removable stop system for delivery of multiple doses.
Claims38
A fluid medication injection apparatus comprising:
- a barrel having a cavity therein;
- the barrel also having a muzzle end through which the needle passes during injection;
- a removable cap detachably connected to the muzzle end of the barrel, the removable cap having a needle passageway through which the needle can extend;
- a syringe subassembly within the barrel and sized to slide within the cavity, the syringe subassembly having an ampule for housing fluid medication, a needle, and a plunger for forcing the fluid medication from the ampule through the needle;
- a protective sheath provided on the needle;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- and
- a sheath remover detachably connected to the removable cap for engaging and removing the protective sheath from the needle.
6 more elements
A fluid medication injection apparatus comprising:
- a barrel having a cavity therein, the barrel having a muzzle end and a proximal end;
- a syringe subassembly positioned within the barrel and mounted to allow relative slidable motion of the syringe subassembly within the cavity:
- the syringe subassembly having an ampule for housing fluid medication, a needle, and a plunger for forcing the fluid medication from the ampule through the needle;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- and
- a trigger handle connected to activate the driver release, said trigger handle having a sleeve portion which extends along and over substantial portions of the barrel to form a handle which is grasped by a user's hand;
- said sleeve portion extending 75% of the barrel length and being slidable relative to said barrel:
- said trigger handle being connected so as to release the driver release when the trigger handle is moved upon the barrel toward the muzzle end.
6 more elements
A dual use fluid medication injection apparatus capable of both mechanically powered administration and manual administration of a fluid medication, comprising:
- a barrel having a cavity therein;
- a manually usable syringe subassembly positioned within the barrel and sized to slide within the cavity, the syringe subassembly having:
- an ampule for housing fluid medication;
- a needle in fluid communication with said ampule;
- a plunger for forcing the fluid medication from the ampule through the needle;
- said plunger including a plunger shaft and a plunger portion which extends from the ampule to allow manual depression of the plunger to dispense fluid from the ampule;
- said barrel including at least a first part and a second part which are manually detachable to allow removal and installation of the syringe subassembly;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- said plunger being unattached to said driver to allow removal of said syringe subassembly from the barrel while in cocked or extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- a sheath remover detachably connected to a muzzle end of the barrel for engaging and removing a protective sheath from the needle;
- a removable cap detachably connected to the muzzle end of the barrel, the removable cap having a needle passageway through which the needle can extend;
- and
- the sheath remover is frictionally mounted to slide onto the removable cap.
11 more elements
A dual use fluid medication injection apparatus capable of both mechanically powered administration and manual administration of a fluid medication, comprising:
- a barrel having a cavity therein;
- a manually usable syringe subassembly positioned within the barrel and sized to slide within the cavity, the syringe subassembly having:
- an ampule for housing fluid medication;
- a needle in fluid communication with said ampule;
- a plunger for forcing the fluid medication from the ampule through the needle;
- said plunger including a plunger shaft and a plunger portion which extends from the ampule to allow manual depression of the plunger to dispense fluid from the ampule;
- said barrel including at least a first part and a second part which are manually detachable to allow removal and installation of the syringe subassembly;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- said plunger being unattached to said driver to allow removal of said syringe subassembly from the barrel while in cocked or extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- a sheath remover detachably connected to a muzzle end of the barrel for engaging and removing a protective sheath from the needle;
- a removable cap detachably connected to the muzzle end of the barrel;
- and
- the sheath remover is detachably connected to the removable cap, the sheath remover having an aperture formed therein which receives and grips the protective sheath for removal.
11 more elements
A dual use fluid medication injection apparatus capable of both mechanically powered administration and manual administration of a fluid medication, comprising:
- a barrel having a cavity therein;
- a manually usable syringe subassembly positioned within the barrel and sized to slide within the cavity, the syringe subassembly having:
- an ampule for housing fluid medication;
- a needle in fluid communication with said ampule;
- a plunger for forcing the fluid medication from the ampule through the needle;
- said plunger including a plunger shaft and a plunger portion which extends from the ampule to allow manual depression of the plunger to dispense fluid from the ampule;
- said barrel including at least a first part and a second part which are manually detachable to allow removal and installation of the syringe subassembly;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- said plunger being unattached to said driver to allow removal of said syringe subassembly from the barrel while in cocked or extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- a trigger handle connected to activate the driver release, said trigger handle having a sleeve portion which extends along and over substantial portions of the barrel to form a handle which is grasped by a user's hand;
- said sleeve portion extending 75% of the barrel length and being slidable relative to said barrel;
- said trigger handle being connected so as to release the driver release when the trigger handle is moved upon the barrel toward the muzzle end.
10 more elements
A dual use fluid medication injection apparatus capable of both mechanically powered administration and manual administration of a fluid medication, comprising:
- a barrel having a cavity therein;
- a manually usable syringe subassembly positioned within the barrel and sized to slide within the cavity, the syringe subassembly having:
- an ampule for housing fluid medication;
- a needle in fluid communication with said ampule;
- a plunger for forcing the fluid medication from the ampule through the needle;
- said plunger including a plunger shaft and a plunger portion which extends from the ampule to allow manual depression of the plunger to dispense fluid from the ampule;
- said barrel including at least a first part and a second part which are manually detachable to allow removal and installation of the syringe subassembly;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- said plunger being unattached to said driver to allow removal of said syringe subassembly from the barrel while in cocked or extended positions;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- a sheath remover detachably connected to a muzzle end of the barrel for engaging and removing a protective sheath from the needle;
- a plurality of stops within the barrel for halting movement of the driver.
9 more elements
A fluid medication injection apparatus comprising:
- a barrel having a cavity therein, the barrel having a muzzle end and a proximal end;
- a syringe subassembly positioned within the barrel and mounted to allow relative slidable motion of the syringe subassembly within the cavity;
- the syringe subassembly having:
- an ampule for housing fluid medication;
- a needle;
- a plunger for forcing the fluid medication from the ampule through the needle;
- a plunger shaft connected to said plunger;
- an adjustable plunger shaft head threadably connected to the plunger shaft for adjustment relative thereto to allow adjustment of the overall length of the ampule;
- a driver for forcing the syringe subassembly to inject the needle and displace fluid medication through the needle, the driver being movable between a cocked position and extended positions;
- said driver contacting the adjustable plunger shaft head;
- a driver release for controllably releasing the driver from the cocked position into an extended position;
- a plurality of stops within the barrel for halting movement of the driver.
9 more elements
Dependencies are inferred from the claim text.