IP Library › Granted Patent US 10,774,301
Granted Patent B2
US 10,774,301 · App. 15/645,657 · Granted Sep 15, 2020

Syringe system for fluid separation

Inventors: Ashim Gupta (Springfield, IL); Michael W. Neumeister (Springfield, IL); Sohyung Cho (Clayton, MO)
Assignee: Board of Trustees of Southern Illinois University
C12M47/04B01D17/0214B01D17/0217A61M5/31511A61M5/31566A61M5/34
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Quick Facts
Patent No.
US 10,774,301
App. No.
15/645,657
Granted
Sep 15, 2020
Kind
B2
Abstract

A syringe device for separating liquids of different densities is provided with a hollow syringe barrel, a perforated plunger seal with a seal hole, and a hollow plunging tube with a closed bottom with at least one tube hole. The perforated plunger seal has an outer perimeter that resides flush against an interior surface of the hollow syringe barrel. The tube hole is in operational relationship with the seal hole. Optionally, a relief hole is provided on a top portion of the hollow plunging tube to allow a user to create vacuum pressure as necessary.

Claims (20)

1. A syringe device for separating liquids of different densities comprising of:

a hollow syringe barrel,

a perforated plunger seal with an outer perimeter that resides flush against an interior surface of said hollow syringe barrel with an at least one seal hole in said perforated plunger seal,

a hollow plunging tube with a scaled bottom with an at least one tube hole in said scaled bottom of scaled hollow plunging tube,

a removable stop cap in operational relationship with said hollow plunging tube, and

said removable stop cap is rotatable to a scaled position wherein an at least one top portion relief hole on said removable stop cap misaligns with an at least one side relief hole located on said hollow plunging tube creating a seal within a hollow plunging tube cavity of said hollow plunging tube to prevent fluids from escaping.

2. The syringe device of claim 1 further comprising:

a beveled needle hub at a lower end of said hollow syringe barrel.

3. The syringe device of claim 1 wherein:

said at least one tube hole on said sealed bottom of said hollow plunging tube is in operational relationship to an at least one seal hole in said perforated plunger seal.

4. The syringe device of claim 3 wherein:

An at least one male interlocking thread located at a bottom portion of said hollow plunging tube resides in operational relationship with a female interlocking thread of said perforated plunger seal.

5. The syringe device of claim 4 wherein:

Said at least one tube hole on said sealed bottom of said hollow plunging tube is aligned to correspond with said at least one seal hole in said perforated plunger seal.

6. The syringe device of claim 5 wherein:

Said hollow plunging tube set to an open position creates a seal cavity within said perforated plunging seal.

7. The syringe device of claim 6 wherein:

Said hollow plunging tube is rotated in an opening direction to said open position such that said at least one seal hole in said perforated plunger seal and said at least one tube hole on said sealed bottom of said plunging tube permits liquids to flow from the hollow syringe barrel cavity of said hollow syringe barrel, through the seal cavity, and into a hollow plunging tube cavity of said hollow plunging tube.

8. The syringe device of claim 6 wherein:

Said hollow plunging tube is rotated in a closing direction to a closed position such that said at least one seal hole and at least one tube hole are misaligned to prevent liquids from moving from the hollow syringe barrel cavity of said hollow syringe barrel into a hollow plunging tube cavity of said hollow plunging tube.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 15, 2017
From: GUPTA, ASHIM; NEUMEISTER, MICHAEL; CHO, SOHYUNG
To: BOARD OF TRUSTEES OF SOUTHERN ILLINOIS UNIVERSITY
Reel/Frame 043014/0040 →
Continuity (2)
Provisional Application 62360550 · Jul 11, 2016
Related Publication 20180010086A1 · Jan 11, 2018