Dual-chamber syringe with dual-lumen intravenous set

Patent metadata

Field	Value
Publication number	US-12109396-B2
Application number	US-202217845392-A
Country	US
Kind code	B2
Filing date	Jun 21, 2022
Priority date	Oct 11, 2018
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A dual-chamber syringe may include an end wall and a primary plunger. The primary plunger may include a primary stopper. The primary stopper may form a primary chamber with the end wall. A secondary plunger may be in mechanical association with the primary plunger. The secondary plunger may include a secondary stopper. The secondary stopper may form a secondary chamber with the primary stopper. A primary nozzle may extend from the end wall and may be in fluid communication with the primary chamber. A secondary nozzle may extend from the end wall and may be in fluid communication with the secondary chamber.

First claim

What is claimed is:

1. A dual-chamber syringe, comprising:
an end wall comprising a channel;
a primary plunger comprising a primary stopper, the primary stopper forming a primary chamber with the end wall;
a secondary plunger in mechanical association with the primary plunger, the secondary plunger comprising a secondary stopper, the secondary stopper forming a secondary chamber with the primary stopper;
a primary nozzle extending from the end wall, the primary nozzle in fluid communication with the primary chamber;
a secondary nozzle extending from the end wall, the secondary nozzle in fluid communication with the secondary chamber; and
an O-ring configured to isolate the primary nozzle from the secondary chamber in a pre-flushing state and to permit fluid communication between the secondary chamber and the primary nozzle via the channel in a post-flushing state.

2. The dual-chamber syringe of claim 1 , wherein the secondary nozzle extends centrally from the end wall.

3. The dual-chamber syringe of claim 2 , wherein the primary nozzle is radially offset from the secondary nozzle.

4. The dual-chamber syringe of claim 1 , wherein the primary nozzle and the secondary nozzle are asymmetric.

5. The dual-chamber syringe of claim 1 , further comprising a nozzle guide extending from the end wall and surrounding the primary nozzle and the secondary nozzle.

6. The dual-chamber syringe of claim 1 , wherein the primary plunger is lockable to the secondary plunger.

7. The dual-chamber syringe of claim 1 , wherein the secondary nozzle is in fluid communication with the secondary chamber via an internal tube extending from the end wall.

8. The dual-chamber syringe of claim 7 , wherein the internal tube is received by a primary inner cavity of the primary plunger.

9. The dual-chamber syringe of claim 1 , wherein the O-ring seals against a notch of the end wall in the pre-flushing state, wherein the notch is in fluid communication with the channel of the end wall.

10. The dual-chamber syringe of claim 9 , wherein the O-ring permits fluid communication between the secondary chamber and the primary nozzle via the notch and the channel in the post-flushing state.

11. The dual-chamber syringe of claim 1 , wherein fluid is forced past the O-ring to permit fluid communication between the secondary chamber and the primary nozzle in the post-flushing state.

Assignees

• Carefusion 303 Inc

Inventors

• Mansour George
• Mason Eugene
• Callahan Ryan
• Oda Todd
• Underwood Wesley
• Shams Adel
• Beyhl Dylan
• Salehi Borojerdi Seyed

Classifications

• A61M2005/1787

  Syringes for sequential delivery of fluids, e.g. first medicament and then flushing liquid · 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

• A61M5/284

  comprising means for injection of two or more media, e.g. by mixing · CPC title

• A61M39/105

  Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes (multi-channel connectors in general F16L37/56) · CPC title

• A61M2039/082

  Multi-lumen tubes · CPC title