Hypodermic fluid dispenser

• US 6,056,716 A
• Filed: 10/25/1996
• Issued: 05/02/2000
• Est. Priority Date: 06/08/1987
• Status: Expired due to Fees

• Current Assignee: D'Antonio Consultants International, Inc.
• Original Assignee: D'Antonio Consultants International, Inc.
• Inventors: D'Antonio, Nicholas F., D'Antonio, Linda F., Wagner, John T.
• Primary Examiner(s): Lewis, Ralph A.
• Application Number:
  US08/738,303
• Time in Patent Office: 1,285 Days
• Field of Search: 604/68, 604/72, 604/198, 604/207, 604/46, 604/47, 604/131, 604/134
• US Class Current: 604/68
• CPC Class Codes: A61D 7/00 Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals for reproduction or fertilisation A61D19/00 ; devices for implanting pellets, radon seeds or the like A61M37/0069
• CPC Class Codes: A61M 2005/005 Magazines with multiple ampoules directly inserted into an injection or infusion device, e.g. revolver-like magazines containing ampoules with or without needles
• CPC Class Codes: A61M 2005/14533 cam actuated
• CPC Class Codes: A61M 2005/2414 from the side
• CPC Class Codes: A61M 2005/3125 specific display means, e.g. to indicate dose setting
• CPC Class Codes: A61M 2005/3152 including gearings to multiply or attenuate the piston displacing force
• CPC Class Codes: A61M 2005/3249 Means to disalign the needle tip and the distal needle passage of a needle protection sleeve
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/8293 Solar
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: A61M 5/204 connected to external reservoirs for multiple refilling
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/2425 by compression of deformable ampoule or carpule wall
• CPC Class Codes: A61M 5/282 by compression of deformable ampoule or carpule wall
• CPC Class Codes: A61M 5/30 Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
• CPC Class Codes: A61M 5/3007 with specially designed jet passages at the injector's distal end
• CPC Class Codes: A61M 5/31525 Dosing burettes, pipettes B01L3/02
• CPC Class Codes: A61M 5/31566 : Means improving security or handling thereof
• CPC Class Codes: A61M 5/31596 : comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/3243 : being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: A61M 5/326 : Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
• CPC Class Codes: A61M 5/3298 : Needles arranged in parallel
• CPC Class Codes: A61M 5/46 : having means for controlling depth of insertion
• CPC Class Codes: A61M 5/484 : Regulating injection pressure
• CPC Class Codes: A61M 5/50 : having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile retractable needles or needle protectors with means for preventing re-use A61M5/321
• CPC Class Codes: A61M 5/5013 : Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe

Abstract

A jet injector system for injecting fluid into a body. The jet injection system includes capsules for holding the material to be injected, apparatus for applying force to the capsule(s) to eject the injection material(s) and a perforator for directing the jet stream for the respective materials into the body. A flyweight system is described for developing jet injection pressures, and latching devices control the flyweight system. An injector system for injecting more than one fluid is described.

Claims

1. Apparatus for injecting fluid into a desired section of a body having an outer dermis and an inner region including at least a subcutaneous region and for some parts of the body, a muscular region, said apparatus comprising:

a fluid supplying device for supplying fluids at values of pressure and velocity of sufficient magnitude to generate a jet stream, and to inject a substantial amount of the fluid into a selected one of the outer dermis and the inner region; and

a perforator for making a perforation and entering the dermis of the body, said perforator comprised of an elongated tubular member having a first end connected to said fluid supplying device and an opposed sharp second end for perforating the body and dispensing the jet stream of fluid into the perforation, said perforator having an effective length of less than 12.7 mm, said effective length preventing said perforator from perforating the muscular region;

said fluid supplying device having a generally flat face through which said perforator is extendable.

2. Apparatus according to claim 1 wherein said perforator has a longitudinal axis extending from said first end up to said second end, and said second end has a central axis slanted relative to the longitudinal axis of said perforator for enabling said second end to penetrate the dermis and create an anchor point to establish and maintain the penetration position of said second end, and maintain an effective fluid flow of the jet stream even if there is movement of the body being injected.

4. Apparatus according to claim 1, and further comprising:

orifice means positioned in said perforator for generating a coherent stream for flow through said exit portion.

5. Apparatus according to claim 1, wherein said perforator has an effective length of less than 4 mm.

6. Apparatus according to claim 1, wherein said perforator has an effective length of less than 1.5 mm.

7. Apparatus according to claim 1, wherein said perforator has an effective length of less than 9.5 mm.

8. Apparatus according to claim 1, wherein said perforator has an effective length of less than 3.1 mm.

9. Apparatus according to claim 1, wherein said perforator has an effective length of less than 8 mm.

10. Apparatus according to claim 1, wherein said perforator has an effective length of less than 5 mm.

11. Apparatus according to claim 1, wherein said perforator has an effective length of less than 1 mm.

12. Apparatus according to claim 1, wherein said perforator has an effective length of less than 4.7 mm.

13. Apparatus according to claim 1, wherein said perforator has an effective length of less than 2.7 mm.

14. Apparatus according to claim 1, wherein said perforator has an effective length of less than 4.2 mm.

15. Apparatus according to claim 1, wherein said perforator has an effective length of less than 3.6 mm.

16. Apparatus according to claim 1 wherein said perforator is removable and replaceable with another perforator.

17. Apparatus according to claim 1 and further including protective containment means for protectively containing said perforator before and after said perforator makes a perforation and enters the dermis of the body.

3. Apparatus according to 2 wherein said second end has a surgically sharp end for piercing the dermis.

18. Apparatus for injecting fluid into a desired section of a body having a dermis and an inner region including at least a subcutaneous region, and for some parts of the body a muscular region, said apparatus comprising:

an electro-mechanical, spring energized fluid supplying device for supplying fluids at values of pressure and velocity of sufficient magnitude to generate a jet stream, and to inject a substantial amount of the fluid into a selected one of the outer dermis and the inner region; and

a perforator for making a perforation and entering the dermis of the body, said perforator comprised of an elongated tubular member having a first end connected to said fluid supplying device and an opposed sharp second end for perforating the body and dispensing the jet stream of fluid into the perforation, said perforator having an effective length of less than 12.7 mm, said effective length preventing said perforator from perforating the muscular region;

said fluid supplying device having a generally flat face through said perforator is extendable.