Syringe for the remote injection of animals and fish

• US 4,684,366 A
• Filed: 09/16/1985
• Issued: 08/04/1987
• Est. Priority Date: 03/15/1985
• Status: Expired due to Fees

• Current Assignee: Brian J. Harvey, Christopher G. Denny
• Original Assignee: Brian J. Harvey, Christopher G. Denny
• Inventors: Denny, Christopher G., Harvey, Brian J.
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US06/776,673
• Time in Patent Office: 687 Days
• Field of Search: 604/143, 604/148, 604/139, 604/130, 43/43.13, 273/418
• US Class Current: 604/130
• CPC Class Codes: F42B 12/54 by implantation, e.g. hypodermic projectiles

Abstract

A novel syringe is provided herein. It includes a cylindrical barrel having a closed forward end provided with a longitudinally-extending channel therethrough. A hypodermic needle is slidably received in the channel. A frangible septum is disposed in the channel and is adapted to be pierced upon inward sliding movement of the hypodermic needle. At least a single stopper is slidably and sealingly disposed in the barrel to divide the barrel into (i) a forward, payload chamber, defined between the closed forward end of the barrel and the leading face of the stopper, and (ii) a rearward propulsion chamber downstream of the trailing face of the stopper. The propulsion chamber is controllably variably prechargeable to a predetermined gaseous pressure. The syringe may be used with a novel retractable collar and with a novel sliding fin assembly. This syringe allows injection, from a distance, of aquatic or land animals with tranquillizers, medications, or other chemical compounds without entrapment and stressing of the animal. A variation of this syringe is taught herein to allow the remote tranquillization and entrapment of aquatic animals where the animals may not be visibly selected.

Claims

1. A syringe comprising:

(a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough;

(b) a hypodermic needle slidable received in said channel;

(c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypodermic needle; and

,

(d) at least a single stopper slidably and sealingly disposed in said barrel to divide said barrel into (i) a forward, payload chamber, defined between the closed forward end of said barrel and the leading face of the stopper and (ii) a rearward propulsion chamber downstream of the trailing face of said stopper,

said propulsion chamber being prechargeable to a controllable, variable, predetermined gaseous pressure, and wherein said hypodermic needle is a releasing needle structure comprising;

an open-ended, skirt-shaped guide having a closed end pireced by a longitudinally-extending channel;

a hollow hypodermic needle temporarily secured within said guide by means of a lower fixed disc attached to said needle, said hypodermic needle being adapted to be slidable within said guide;

a compressed recoil member disposed between said fixed disc and said guide; and

an upper, temporary, disintegratable disc held in place by an impact frangible seal;

whereby disintegration of said disc results in movement of said needle into said cylindrical guide.

2. The syringe of claim 1, including a safety cap temporarily and removable disposed over said hypodermic needle.

3. A syringe comprising:

(a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough;

(b) a hypodermic needle slidable received in said channel;

(c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypodermic needle; and

,

(d) at least a single stopper slidably and sealingly disposed in said barrel to divide said barrel into (i) a forward, payload chamber, defined between the closed forward end of said barrel and the leading face of the stopper and (ii) a rearward propulsion chamber downstream of the trailing face of said stopper,

said propulsion chamber being prechargeable to a controllable, variable, predetermined gaseous pressure, and wherein said hypodermic needle structure is a releasing needle comprising;

an open-ended, skirt-shaped cylindrical guide having its closed end pierced by a longitudinally extending channel;

a hollow hypodermic needle temporarily secured within said cylindrical guide by means of a lower fixed disc attached to said hypodermic needle, said hypodermic needle being adapted to be slidable within said cylindrical guide;

a compressed coil spring disposed between said fixed disc and said cylindrical guide; and

an upper, temporary, disintegratable disc held in place by an impact frangible seal;

whereby disintegration of said disc results in movement of said hypodermic needle into said cylindrical guide.

4. The syringe of claim 3, including a safety cap temporarily and removably disposed over said hypodermic needle.

5. A syringe comprising:

(a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough;

(b) a hypodermic needle slidable received in said channel;

(c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypodermic needle; and

,

(d) at least a single stopper slidably and sealingly disposed in said barrel to divide said barrel into (i) a forward, payload chamber, defined between the closed forward end of said barrel and the leading face of the stopper and (ii) a rearward propulsion chamber downstream of the trailing face of said stopper,

said propulsion chamber being prechargeable to a controllable, variable, predetermined gaseous pressure, and wherein said hypodermic needle is a releasing needle structure comprising;

an open-ended, skirt-shaped cylindrical guide formed of a plastics material and having its closed end pierced by a longitudinally extending channel;

a hollow hypodermic needle temporarily secured within said cylindrical guide by means of a lower fixed disc attached to said hypodermic needle, said hypodermic needle being adapted to be slidable within said cylindrical guide;

a compressed coil spring disposed between said fixed disc and said cylindrical guide; and

an upper, temporary, disc formed of a water-soluble material adaptable to dissolve slowly upon contact with water, said temporary disc being held in place by an impact frangible seal;

whereby dissolution of said disc results in movement of said hypodermic needle into said cylindrical guide.

6. The syringe of claim 5, including a safety cap temporarily and removable disposed over said hypodermic needle.

7. A syringe comprising:

(a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough;

(b) a hypodermic needle slidable received in said channel;

(c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypodermic needle; and

,

(d) at least a single stopper slidably and sealingly disposed in said barrel to divide said barrel into (i) a forward, payload chamber, defined between the closed forward end of said barrel and the leading face of the stopper and (ii) a rearward propulsion chamber downstream of the trailing face of said stopper,

said propulsion chamber being prechargeable to a controllable, variable, predetermined gaseous pressure, and wherein said hypodermic needle is a releasing needle structure comprising;

an open-ended, skirt-shaped cylindrical guide formed of metal and having its closed end pierced by a longitudinally extending channel;

a hollow hypodermic needle temporarily secured within said cylindrical guide by means of a lower fixed disc attached to said hypodermic needle, said hypodermic needle being adapted to be slidable within said cylindrical guide;

a compressed coil spring disposed between said fixed disc and said cylindrical guide; and

an upper, temporary, disc formed or a water-soluble material adaptable to dissolve slowly upon contact with water, said temporary disc being held in place by an impact frangible seal;

whereby dissolution of said disc results in movement of said hypodermic needle into said cylindrical guide.

8. The syringe of claim 7, including a safety cap temporarily and removably disposed over said hypodermic needle.