Multiple barrel syringe

• US 4,915,695 A
• Filed: 09/12/1988
• Issued: 04/10/1990
• Est. Priority Date: 09/12/1988
• Status: Expired due to Fees

• Current Assignee: David C. Koobs
• Original Assignee: David C. Koobs
• Inventors: Koobs, David C.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US07/242,816
• Time in Patent Office: 575 Days
• Field of Search: 604/187, 604/191, 604/209-211, 604/218, 222/135, 222/136, 222/137, 222/94
• US Class Current: 604/191
• CPC Class Codes: A61M 2005/31506 formed as a single piece, e.g. moulded
• CPC Class Codes: A61M 5/315 Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/31596 comprising means for injection of two or more media, e.g. by mixing

Abstract

A multiple barrel syringe apparatus is provided for selectively dispensing fluids. A body has a plurality of pie shaped bores therein, each bore being open at one end and narrowing at the other end into separate smaller bores opening at the other end thereof. A needle cannula having a bore therethrough or a stopcock may be attached to the other end of the body over a plurality of smaller bores so that each pie-shaped bore can have a liquid therein dispensed through a single bore. A plurality of plungers are each pie shaped for fitting in one of the cylindrical body pie shaped bores and each plunger has a groove extending down one side having a plurality of ratchet teeth therein. A plurality of pawls are formed on the cylindrical body, one pawl positioned adjacent each cylindrical body pie shaped bore on one end for selectively engaging the ratchet teeth in the groove of one plunger so that each plunger can be locked in a different position.

Claims

1. A multiple barrel syringe for selective dispensing of fluids comprising:

a body having a plurality of pie shaped bores therein, said body pie shaped bores being open at one end and narrowing at the other end into separate smaller bore opening at the other end thereof and said smaller bores converging together into one bore;

a plurality of plungers, each plunger being adapted to fit into one said pie shaped bore of said body and each plunger having a plurality of ratchet teeth thereon, each of said plurality of plungers having a pie shaped cross-section matching said pie shaped bore in said body and a pie shaped resilient seal on the end thereof;

a plurality of pawls formed on said body, one pawl positioned adjacent each body pie shaped bore one end for selectively engaging said ratchet teeth on the adjacent plunger whereby a plurality of fluids each of different amounts can be injected from the same syringe.

2. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 1 in which said body has a flange around said one end thereof.

3. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 2 in which said body has a generally cylindrical shaped main body portion.

4. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 2 in which said body has a flange around said one end thereof having two sides thereof extending to form two finger grips for holding said body when using said syringe.

7. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 1 in which each of said plurality bores in said body pie shaped bores has a different sized cross-section matching one said pie shaped plunger.

8. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 1 in which each of said plurality of plungers is hollow and has a pushing surface on one end thereof and a resilient seal on the other end thereof.

9. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 1 in which each of said plurality of plungers has a groove extending down one edge thereof and has a plurality of teeth formed in said groove for engagement with said pawl.

10. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 1 in which said cylindrical body is a hollow body having at least three walls therein to form at least three angled bores therethrough, said walls being separated each from the other to form at least two bores having a different size.

5. A multiple barrel syringe for selective dispensing of fluids in accordance with claim in which said plurality of pawls are formed as part of said body.

6. A multiple barrel syringe for selective dispensing of fluids in accordance with claim 5 in which said plurality of pawls each have a teeth engaging blade and a releasing handle formed thereon.