Syringe fill adapter

Patent metadata

Field	Value
Publication number	US-12263136-B2
Application number	US-202117317306-A
Country	US
Kind code	B2
Filing date	May 11, 2021
Priority date	Nov 25, 2015
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

A syringe for delivery of a medical liquid to a container has a body with proximal end, a frustoconical distal end, and a cylindrical sidewall extending between the proximal end and the distal end along a longitudinal axis. The syringe includes a nozzle at a distal portion of the frustoconical distal end of the syringe, the nozzle having a throughbore providing fluid communication between an interior volume of the syringe and a medical connector configured to be connected to the nozzle. The nozzle includes a plurality of longitudinal ribs formed on an inner surface of the nozzle. The syringe is designed so that the plurality of longitudinal ribs directs a flow of a medical fluid along an inner surface of the frustoconical distal end and along an interior surface of the cylindrical sidewall of the syringe under a Coandǎ effect. Syringe and connector assemblies and methods for reducing a number of bubbles formed in a medical fluid during a syringe filling procedure are also described.

First claim

What is claimed is:

1. A syringe for a powered medical fluid injector, the syringe comprising:
a proximal end, a frustoconical distal end, and a cylindrical sidewall extending between the proximal end and the distal end;
a nozzle at a distal portion of the frustoconical distal end of the syringe, the nozzle having a throughbore providing fluid communication between an interior volume of the syringe and a medical connector configured to be connected to the nozzle; and
a plurality of longitudinal ribs formed on an inner surface of the nozzle wherein the plurality of longitudinal ribs extend proximally from the inner surface from the distal end of the nozzle down at least a portion of an inner surface of the frustoconical distal end;
wherein the plurality of longitudinal ribs directs a flow of a medical fluid along the inner surface of the frustoconical distal end and along an interior surface of the cylindrical sidewall of the syringe under a Coanda effect as the syringe is being filled with the medical fluid.

2. The syringe of claim 1 , wherein the plurality of longitudinal ribs are configured to enhance a surface adhesion of the medical fluid to the inner surface of the frustoconical distal end and along an interior surface of the cylindrical sidewall of the syringe.

3. The syringe of claim 1 , wherein the plurality of longitudinal ribs comprises a plurality of rounded ribs.

4. The syringe of claim 1 , wherein the plurality of longitudinal ribs comprises a plurality of square ribs.

5. The syringe of claim 1 , further comprising a flow controller extending through an inner bore of the nozzle.

6. The syringe of claim 5 , wherein the flow controller is sized and shaped to direct the flow of the medical fluid along the inner surface of the frustoconical distal end and along the interior surface of the cylindrical sidewall of the syringe.

7. The syringe of claim 6 , wherein the flow controller directs the medical fluid to flow between a plurality of longitudinal channels between the plurality of longitudinal ribs.

8. The syringe of claim 5 , wherein the flow controller comprises a plurality of flow control ribs having an equal or unequal angular spacing around a longitudinal axis of the flow control, wherein the plurality of flow control ribs are on an outer radially surface thereof.

9. A syringe and connector assembly comprising:
a syringe comprising:
a proximal end, a frustoconical distal end, and a cylindrical sidewall extending between the proximal end and the distal end;
a nozzle at a distal portion of the frustoconical distal end of the syringe, the nozzle having a throughbore providing fluid communication between an interior volume of the syringe and a medical connector configured to be connected to the nozzle; and
a plurality of longitudinal ribs formed on an inner surface of the nozzle wherein the plurality of longitudinal ribs extend proximally from the inner surface from the distal end of the nozzle down at least a portion of an inner surface of the frustoconical distal end; and

a connector comprising a flow controller disposed within a central bore of the connector,
wherein the connector connects to a distal end of the nozzle and the central bore provides fluid communication between an interior volume of the syringe and a tubing element, and
wherein the plurality of longitudinal ribs directs a flow of a medical fluid from a fluid path of the connector along the inner surface of the frustoconical distal end and along an interior surface of the cylindrical sidewall of the syringe under a Coanda effect as the syringe is being filled with the medical fluid.

10. The syringe and connector assembly of claim 9 , wherein the tubing element is selected from a spike assembly connected directly to the connector, a fill tube connected to the spike assembly, and a connector tube.

11. The syringe and connector assembly of claim 9 , wherein the flow controller directs the medical fluid to flow between a plurality of longitudinal channels between the plurality of longitudinal ribs.

12. The syringe and connector assembly of claim 11 , wherein the plurality of longitudinal ribs are configured to enhance a surface adhesion of the liquid to the inner surface of the frustoconical distal end and along an interior surface of the cylindrical sidewall of the syringe.

13. The syringe and connector assembly of claim 9 , wherein the flow controller is connected to an inner surface of the central bore by one or more spokes.

14. The syringe and connector assembly of claim 9 , wherein the flow controller comprises a plurality of flow control ribs having an equal or unequal angular spacing around a longitudinal axis of the flow control, wherein the plurality of flow control ribs are on an outer radially surface thereof.

15. A method for reducing a number of bubbles formed in a medical fluid during a syringe filling procedure, the method comprising:
flowing the medical fluid past a flow controller disposed within a central bore of a nozzle of a syringe;
diverting the medical fluid by the flow controller in a radially outward direction toward an angled portion of an inner surface of a frustoconical distal end of the syringe;
flowing the medical fluid down the inner surface of the frustoconical distal end of the syringe;
flowing the medical fluid down an interior surface of a cylindrical sidewall of the syringe, wherein the sidewall extends between the frustoconical distal end and a proximal end; and
filling an interior volume of the syringe with the medical fluid;
inducing a Coanda effect in the medical fluid by the diverting and flowing steps such that the number of bubbles formed during the syringe filling procedure in reduced compared to a filling procedure that does not include the diverting and flowing steps; and
wherein the inner surface of the central bore of the nozzle further comprises a plurality of longitudinal ribs formed on the inner surface of the nozzle, and wherein diverting the liquid fluid by the flow controller in a radially outward direction comprises diverting the liquid fluid by the flow controller in a radially outward direction toward the plurality of longitudinal ribs.

16. The method of claim 15 , wherein the flowing the liquid fluid down an inner surface of the frustoconical distal end of the syringe further comprises flowing the medical fluid down a plurality of channels between the plurality of longitudinal ribs.

17. The method of claim 15 , wherein the plurality of longitudinal ribs are configured to enhance a surface adhesion of the medical fluid to the inner surface of the frustoconical distal end and the interior surface of the cylindrical sidewall of the syringe.

Assignees

• Bayer Healthcare Llc

Inventors

• Cowan Kevin
• Dedig James A
• Spohn Michael
• Mcdermott Michael

Classifications

• A61J1/201

  having one piercing end · CPC title

• A61J1/2082

  for gas filtration · CPC title

• A61J1/2037

  having valve means · CPC title

• A61J1/2075

  for external venting · CPC title

• A61J1/1406

  Septums, pierceable membranes · CPC title