Fluid Delivery Device with Filtration

• US 20130072880A1
• Filed: 09/16/2011
• Published: 03/21/2013
• Est. Priority Date: 09/16/2011
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Finke, Melvin A.
• Granted Patent: US 9,125,992 B2
• Time in Patent Office: Days
• US Class Current: 604/190
• CPC Class Codes: A61M 39/223 Multiway valves
• CPC Class Codes: A61M 5/3145 Filters incorporated in syringes
• CPC Class Codes: A61M 5/32 Needles; Details of needles pertaining to their connection with syringe or hub infusion needles A61M5/158; Accessories for bringing the needle into, or holding the needle on, the body A61M5/42, A61M5/46 take precedence; guide needles for catheters A61M25/065; Devices for protection of needles apparatus specially adapted for cleaning or sterilising needles A61M5/001
• CPC Class Codes: A61M 5/3293 characterised by features of the needle hub
• CPC Class Codes: B23K 2103/42 Plastics B23K2103/16 takes precedence
• CPC Class Codes: B23K 2103/50 Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
• CPC Class Codes: B23K 26/384 of specially shaped holes
• CPC Class Codes: B29C 2791/009 Using laser
• CPC Class Codes: B29C 2793/0018 for making a hole

Abstract

This disclosure relates to fluid delivery devices which include a body defining a fluid channel with filtration. In one embodiment, the body is molded to include a barrier which extends across the fluid channel and a series of apertures or openings are formed through the barrier. A laser device may be used to form the apertures through the barrier.

Claims

1. A fluid delivery device comprising:

a body defining a fluid channel;

a barrier formed integrally with the body extending across the fluid channel; and

a plurality of apertures formed through the barrier;

wherein the plurality of apertures has a count mesh size of from about 50 to about 200 mesh.

2. The fluid delivery device according to claim 1, wherein the body and the barrier are integrally molded.

3. The fluid delivery device according to claim 2, wherein the plurality of apertures are formed in the barrier using a directed energy device.

4. The fluid delivery device according to claim 2, wherein the body defines a needle hub and includes a proximal end including a luer type connector and a distal end supporting a needle cannula.

5. The fluid delivery device according to claim 4, wherein the proximal end of the needle hub defines an inwardly tapered bore.

6. The fluid delivery device according to claim 4, wherein the distal end defines a bore dimensioned to receive the proximal end of the needle cannula.

7. The fluid delivery device according to claim 2, wherein the body is configured as a vial access device and includes a proximal portion which defines a luer type connector and a distal end defining a cannula.

8. The fluid delivery device according to claim 7, wherein the cannula defines a blunt distal edge.

9. The fluid delivery device according to claim 8, wherein the cannula includes at least one side opening which communicates with the fluid channel.

10. The fluid delivery device according to claim 2, wherein the body defines a cylindrical valve member, and the fluid delivery device further includes a housing defining a cylindrical receptacle for rotatably receiving the cylindrical valve member.

11. The fluid delivery device according to claim 10, wherein the housing includes a fluid inlet member and a fluid outlet member, the cylindrical valve member being rotatable from a first position in which the fluid channel of the body is aligned with the fluid inlet member and the fluid outlet member, to a second position in which the fluid channel is misaligned with the fluid inlet member and the fluid outlet member.

12. The fluid delivery device according to claim 11, wherein the fluid channel includes a Y-shaped bore having a first inlet opening, a second inlet opening and an elongated outlet opening, the filtered opening extending across the second inlet opening, wherein in the first position, the fluid delivery device provides non-filtered flow through the first inlet opening, and the cylindrical valve member being movable to a third position in which filtered fluid flow is provided through the second inlet opening.

13. The fluid delivery device according to claim 10, wherein the cylindrical valve member includes an actuator arm to facilitate rotation of the cylindrical valve member.

14. The fluid delivery device according to claim 11, wherein the fluid outlet member defines a vial access cannula.

15. The fluid delivery device according to claim 2, wherein the body is molded from a polyolefin.

16. The fluid delivery device, wherein the fluid delivery device is a syringe.

17. The fluid delivery device, wherein the syringe comprises a male luer connector.

18. A method of forming a fluid delivery device comprising the following steps:

molding a body defining a fluid channel and having a barrier extending across the fluid channel; and

forming a plurality of apertures through the barrier to define a filtered opening to facilitate fluid flow through the fluid channel.

19. The method according to claim 18, wherein the step of forming a series of apertures includes using a laser to form a series of apertures.

20. The method according to claim 19, wherein forming the apertures comprises:

forming a series of first cavities having a first cross-sectional area and a depth less than a thickness of the barrier; and

forming at least one second cavity in each of the first cavities, wherein the at least one second cavity has a cross sectional area less than the cross sectional area of the first cavity.

21. The method according to claim 20, wherein a depth of the first cavity and a depth of the second cavity equals the thickness of the barrier.

22. The method according to claim 20, wherein the first cavity and the second cavity are formed simultaneously.