Multiple compartment syringe

Patent metadata

Field	Value
Publication number	US-9855385-B2
Application number	US-201414769728-A
Country	US
Kind code	B2
Filing date	Mar 12, 2014
Priority date	Mar 13, 2013
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

Various syringe systems are disclosed. One illustrative syringe system may include a syringe body having a hollow lumen and a distal end. The syringe body may be configured to house a plurality of fluids therein. A first plunger may be positioned in the hollow lumen of the syringe body, forming a first seal with an inner wall of the syringe body, and forming a first compartment between the first plunger and the distal end of the syringe. A second plunger may be positioned proximal to the first plunger in the hollow lumen of the syringe body, forming a second seal with the inner wall of the syringe body, and forming a second compartment between the first plunger and the second plunger. A plurality of recesses may be disposed about the inner wall of the syringe body near the distal end of the syringe body.

First claim

What is claimed is:

1. A syringe system comprising:
a syringe body comprising a hollow lumen and a distal end, the syringe body being configured to house a plurality of fluids therein;
a first plunger positioned in the hollow lumen of the syringe body and reciprocally movable within the syringe body to fill the syringe body with movement toward a proximal end of the syringe body and empty the syringe body with movement toward the distal end of the syringe body, the first plunger forming a first seal with an inner wall of the syringe body, and forming a first compartment between the first plunger and the distal end of the syringe body;
a second plunger positioned proximal to the first plunger in the hollow lumen of the syringe body and reciprocally movable within the syringe body to fill the syringe body with movement toward the proximal end of the syringe body and empty the syringe body with movement toward the distal end of the syringe body, the second plunger forming a second seal with the inner wall of the syringe body, and forming a second compartment between the first plunger and the second plunger;
a fluid bypass disposed about the inner wall of the syringe body and the first plunger at or near the distal end of the syringe body, wherein a first fluid can flow through the fluid bypass to the second compartment; and
a mechanism for proximally moving the first plunger to a position proximal to the fluid bypass such that the first plunger forms the first seal, the mechanism comprising one of a slidable end cap at the distal end of the syringe body, and a sleeve comprising at least one magnet at or near the distal end of the sleeve and in magnetic communication with at least one magnet or ferromagnetic material in the first plunger.

2. The syringe system of claim 1 , wherein the mechanism comprises a slidable end cap having a circumferential wall comprising the inner wall of the distal end of the syringe body.

3. The syringe system of claim 2 , wherein applying a proximal force to the slidable end cap causes the end cap to slide in a proximal direction and fluidly seal the fluid bypass.

4. The syringe system of claim 1 , wherein the mechanism comprises the sleeve comprising the at least one magnet at or near the distal end of the sleeve and in magnetic communication with at least one magnet or ferromagnetic material in the first plunger, wherein sliding the sleeve in a proximal direction slides the first plunger in the proximal direction.

5. The syringe system of claim 4 , wherein the sleeve is configured to slide by applying a proximal force to an outer wall of the sleeve.

6. The syringe system of claim 4 , further comprising at least one proximal magnet at or near a proximal end of the sleeve and adapted to be in magnetic communication with a magnet or ferromagnetic material in the second plunger.

7. The syringe system of claim 6 , wherein when the at least one proximal magnet is in magnetic communication with the magnet or ferromagnetic material in the second plunger, movement of the second plunger in the proximal direction causes the sleeve and the first plunger to move in the proximal direction.

8. The syringe system of claim 1 , further comprising a piston connected to the second plunger, wherein the piston is configured to be activated by a thumb piece.

9. The syringe system of claim 1 , wherein the first compartment comprises a contrast medium therein and the second compartment comprises a flushing fluid therein.

10. A syringe system comprising:
a syringe body comprising a hollow lumen and a distal end, the syringe body being configured to house a plurality of fluids therein;
a first plunger positioned in the hollow lumen of the syringe body and reciprocally movable within the syringe body to fill the syringe body with movement toward a proximal end of the syringe body and empty the syringe body with movement toward the distal end of the syringe body, the first plunger forming a first seal with an inner wall of the syringe body, and forming a first compartment between the first plunger and the distal end of the syringe body;
a second plunger positioned proximal to the first plunger in the hollow lumen of the syringe body and reciprocally movable within the syringe body to fill the syringe body with movement toward the proximal end of the syringe body and empty the syringe body with movement toward the distal end of the syringe body, the second plunger forming a second seal with the inner wall of the syringe body, and forming a second compartment between the first plunger and the second plunger;
a fluid bypass disposed about the inner wall of the syringe body and the first plunger at or near the distal end of the syringe body, wherein a first fluid can flow through the fluid bypass to the second compartment; and
a mechanism for proximally moving the first plunger to a position proximal to the fluid bypass such that the first plunger forms the first seal, the mechanism comprising a push rod configured to push the first plunger in a proximal direction, and further comprises a T-connector connected to a distal tip of the syringe body which directs the push rod into the first compartment to connect with the first plunger.

11. The syringe system of claim 10 , wherein the T-connector is fluidly connected to at least one fluid source.

Assignees

• Bayer Medical Care Inc
• Bayer Healthcare Llc

Inventors

• Cowan Kevin P
• Rhinehart Edward J
• Tucker Barry L

Classifications

• A61M2005/3128

  Incorporating one-way valves, e.g. pressure-relief or non-return valves · CPC title

• A61M5/31511

  Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence) · CPC title

• A61M39/24

  Check- or non-return valves · CPC title

• A61M2005/3132

  having flow passages for injection agents at the distal end of the barrel to bypass a sealing stopper after its displacement to this end due to internal pressure increase · CPC title

• A61M5/31513

  Piston constructions to improve sealing or sliding · CPC title