Nested syringe assembly

Patent metadata

Field	Value
Publication number	US-2018318507-A1
Application number	US-201615774037-A
Country	US
Kind code	A1
Filing date	Nov 11, 2016
Priority date	Nov 13, 2015
Publication date	Nov 8, 2018
Grant date	—

Abstract

Provided is an apparatus, system, and method for a nested syringe assembly. The nested syringe assembly ( 100 ) includes a first syringe ( 104 ) having a cylindrical body defining an inner diameter and a second syringe ( 102 ) having a cylindrical body defining an outer diameter. The outer diameter of the second syringe is less than the inner diameter of the first syringe. At least a portion of the cylindrical body of the second syringe is disposed within the cylindrical body of the first syringe.

First claim

1 . A nested syringe assembly, comprising:
a first syringe having a cylindrical body defining an inner diameter; and a second syringe having a cylindrical body defining an outer diameter, wherein the outer diameter of the second syringe is less than the inner diameter of the first syringe, and wherein at least a portion of the cylindrical body of the second syringe is disposed within the cylindrical body of the first syringe.

2 . The nested syringe assembly of claim 1 , further comprising:
a first plunger seal assembly positioned within the cylinder body of the first syringe; and a second plunger seal assembly positioned within the cylinder body of the second syringe.

3 . The nested syringe assembly of claim 2 , wherein the first plunger seal assembly positioned within the cylinder body of the first cylinder comprises:
a seal ring; a snap ring positioned within the seal ring; and an engagement ring positioned within the seal ring.

4 . The nested syringe assembly of claim 3 , further comprising at least one of a plunger engagement mechanism and a key element defined by the engagement ring.

5 . The nested syringe assembly of claim 4 , wherein the nested syringe assembly comprises the plunger engagement mechanism, wherein the plunger engagement mechanism is in snap fit engagement with the snap ring.

6 . The nested syringe assembly of claim 3 , further comprising at least one engagement member configured to reversibly engage a piston of an injector.

7 . (canceled)

8 . The nested syringe assembly of claim 3 , wherein the first or second plunger seal assembly is compression set inside the first or second cylinder, respectively.

9 . The nested syringe assembly of claim 1 , further comprising at least one engagement feature provided about the cylindrical body of one or both the first syringe or the second syringe, wherein the at least one engagement feature is configured to reversibly couple the first or second syringe to an injector port.

10 . The nested syringe assembly of claim 9 , wherein the at least one engagement feature comprises a tapered surface configured to contact a guide in a corresponding injector port to self-orient the first or second syringe within the injector when the first or second syringe is inserted into the injector port.

11 . A nested syringe assembly, comprising:
a first syringe having a cylindrical body defining an inner diameter and terminating in a first tip at a distal end; a second syringe having a cylindrical body defining an outer diameter and terminating in a second tip at a distal end, wherein the outer diameter of the second syringe is less than the inner diameter of the first syringe, and wherein at least a portion of the cylindrical body of the second syringe is disposed within the cylindrical body of the first syringe; a base cap coupled to the proximal end of the cylindrical body of the at least one of the first syringe and the second syringe, wherein at least a portion of the second syringe is disposed in the base cap; and a tip cap coupled to the tip of the first syringe.

12 . The nested syringe assembly of claim 11 , further comprising at least one of a flexible tube assembly and a fluid connector assembly disposed within the base cap.

13 . (canceled)

14 . The nested syringe assembly of claim 11 , wherein the first syringe is in thread engagement with the base cap.

15 . The nested syringe assembly of claim 11 , wherein the first syringe is in thread engagement or snap fit engagement with the second syringe.

16 . The nested syringe assembly of claim 11 , wherein the second syringe is in thread engagement or snap fit engagement with the base cap.

17 . (canceled)

18 . (canceled)

19 . The nested syringe assembly of claim 11 , further comprising an O-ring seal between at least one of the first syringe and the base cap and between the second syringe and the base cap.

20 . (canceled)

21 . The nested syringe assembly of claim 11 , wherein the second syringe comprises an injector interface diameter that is the same as an injector interface diameter of the first syringe.

22 . The nested syringe assembly of claim 11 , wherein the first and second syringes are positioned relative to each other with the first tip and the second tip directed in the same direction or the first and second syringes are positioned relative to each other with the first tip and the second tip directed in the opposite direction.

23 . (canceled)

24 . A method of manufacturing a nested syringe assembly, the method comprising:
inserting a first plunger seal assembly within a cylinder body of a first syringe; inserting a second plunger seal assembly within a cylinder body of a second syringe; inserting at least a proximal portion of the second syringe into a base cap and at least a distal portion of the second syringe within the cylinder body of the first syringe; and coupling at least one of the first syringe and the second syringe to the base cap.

25 . The method of claim 24 , comprising inserting at least one of a flexible tube assembly and a fluid connector assembly in the base cap.

26 . (canceled)

27 . The method of claim 24 , comprising coupling a tip cap on a tip of the first syringe.

Assignees

• Bayer Healthcare Llc

Inventors

• Cowan Kevin
• Savio Damian Peter Francis
• Siu Eric
• Sokolov Richard
• Sprada Peter John

Classifications

• A61M5/007

  for contrast media · CPC title

• A61M2205/0222

  Materials for reducing friction · CPC title

• A61M5/3202

  Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001) · CPC title

• A61M5/5086

  for indicating if defective, used, tampered with or unsterile · CPC title

• A61M5/19 Primary

  having more than one chamber {, e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly (surgical glue applicators A61B17/00491)} · CPC title