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Disposable needleless injection system    
United States Patent4913699   
Link to this pagehttp://www.wikipatents.com/4913699.html
Inventor(s)Parsons; James S. (23875 Longspur Ct., Laguna Niguel, CA 92677)
AbstractA needleless injector device includes an integral unit that is dimensioned and arranged to be grasped in the hand of a user, loaded with a selected dosage, and held proximate the skin in order to inject the selected dosage in a high pressure jet sufficient to pass the selected dosage through the skin for injection purposes, the unit having a barrel portion, a gas storage portion, and an intermediate portion. A trigger operates a release mechanism to release compressed gas from a storage compartment to act upon a piston and drive a plunger that ejects the selected dosage of medication through an aperture in the discharge end of the barrel portion, the piston face being larger than the plunger face to increase pressure. A dose dispenser combines with the injection device in a system adapted for use with an insulin or other conventional vial and the dose dispenser may include a vial adapter or the combination of a vial coupler and a transporter/loader device designed to pierce the self-sealing lid on the vial and to facilitate more precise dosage transfers.



 Title Information Submit all comments and votes
 
Patent Text Patent PDF Print Page Summary File History
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Drawing from US Patent 4913699
Disposable needleless injection system - US Patent 4913699 Drawing
Disposable needleless injection system
Inventor     Parsons; James S. (23875 Longspur Ct., Laguna Niguel, CA 92677)
Owner/Assignee    
Patent assignment
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Publication Date     April 3, 1990
Application Number     07/167,337
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     March 14, 1988
US Classification     604/68 604/70 D24/112
Int'l Classification     A61M 005/30
Examiner     Yasko; John D.
Assistant Examiner    
Attorney/Law Firm     Peterson; Gordon L. Hanson; Loyal M. ,
Address
Parent Case    
Priority Data    
USPTO Field of Search     604/68 604/69 604/70 604/71 604/140 604/141
Patent Tags     disposable needleless injection
   
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 References Submit all comments and votes
 
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 U.S. References
 
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Market Size
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$5B - $10B
$2B - $5B
$500M - $2B
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Market Share
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50% - 74.99%
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 Technical Review Submit all comments and votes
 Claims Submit all comments and votes
 


What is claimed is:

1. A method of administering a medication, comprising:

providing at least one needleless injector device having a barrel portion, a gas storage portion, and an intermediate portion extending between the barrel portion and the gas storage portion;

providing dose dispenser means for needleless loading of the injector device with medication withdrawn from a vial having a self-sealing lid;

attaching the dose dispenser means to the vial;

withdrawing a quantity of medication from the vial into the dose dispenser means;

coupling the dose dispenser means to the injector device;

loading a selected dosage from the dose dispenser means into the barrel portion of the injector device through an aperture in the barrel portion;

detaching the dose dispenser means from the injector device; and

operating the loaded injector device to eject the selected dosage from the injector device and thereby pass the selected dosage through the skin.

2. A method as recited in claim 1, wherein the step of providing dose dispenser means includes:

providing dose dispenser means that includes transporter/loader means for transporting and loading the medication and vial coupler means for needleless coupling of the transporter/loader means to the vial for purposes of withdrawing a quantity of medication from the vial into the transporter/loader means.

3. A method as recited