Edge compression manifold apparatus

• US 6,832,787 B1
• Filed: 01/24/2003
• Issued: 12/21/2004
• Est. Priority Date: 01/24/2003
• Status: Expired due to Term

• Current Assignee: National Technology & Engineering Solutions Of Sandia LLC (Honeywell International Inc.)
• Original Assignee: Sandia National Laboratories (Government of the United States of America)
• Inventors: Renzi, Ronald F.
• Primary Examiner(s): Hewitt, James M.
• Application Number:
  US10/350,628
• Time in Patent Office: 697 Days
• Field of Search: 285/124.1, 285/124.2, 285/124.3, 285/124.5, 285/124.4, 285/143.1, 285/332.1
• US Class Current: 285/124.1
• CPC Class Codes: B01J 2219/0081 Plurality of modules
• CPC Class Codes: B01L 2200/027 for microfluidic devices
• CPC Class Codes: B01L 2200/0689 Sealing
• CPC Class Codes: B01L 3/502715 characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
• CPC Class Codes: F16L 41/03 comprising junction pieces for four or more pipe members

Abstract

A manifold for connecting external capillaries to the inlet and/or outlet ports of a microfluidic device for high pressure applications is provided. The fluid connector for coupling at least one fluid conduit to a corresponding port of a substrate that includes: (i) a manifold comprising one or more channels extending therethrough wherein each channel is at least partially threaded, (ii) one or more threaded ferrules each defining a bore extending therethrough with each ferrule supporting a fluid conduit wherein each ferrule is threaded into a channel of the manifold, (iii) a substrate having one or more ports on its upper surface wherein the substrate is positioned below the manifold so that the one or more ports is aligned with the one or more channels of the manifold, and (iv) device to apply an axial compressive force to the substrate to couple the one or more ports of the substrate to a corresponding proximal end of a fluid conduit.

Claims

1. A fluid connector for coupling at least one fluid conduit to a corresponding port of a substrate having a network of microchannels, said fluid connector comprising:

a manifold comprising one or more channels extending therethrough wherein each channel is at least partially threaded and each channel has a tapered configuration;

one or more externally threaded ferrules each defining a bore extending therethrough with each ferrule supporting a fluid conduit wherein each ferrule is threaded into a channel of the manifold and wherein each ferrule defines a lower tapered exterior end;

a substrate having one or more ports on its upper surface wherein the substrate is positioned below the manifold so that the one or more ports is aligned with the one or more channels of the manifold; and

means for applying an axial compressive force to the substrate to couple the one or more ports of the substrate to a corresponding proximal end of a fluid conduit; and

a base plate that is rigidly fastened to and spaced apart from manifold and which is positioned below the substrate; and

a pressure plate that is interposed between the substrate and the base plate.

2. The fluid connector of claim 1 wherein the pressure plate includes one or more adjustable screws for maintaining an upward axial force on the substrate.

3. The fluid connector of claim 2 wherein the manifold and pressure plate define a slot into which the substrate is positioned and the fluid connector comprises means for positioning the pressure plate.

4. The fluid connector of claim 3 wherein the means for positioning the pressure plate comprises at least one guide pin which is disposed on the base plate.

5. The fluid connector of claim 1 wherein the substrate is a microfluidic device.

6. The fluid connector of claim 1 each fluid conduit comprises a capillary tube having an inner diameter that ranges from 5 to 250 microns.

7. The fluid connector of claim 1 wherein the lower surface of the manifold defines one or more channel outlets and the lower surface adjacent each outlet defines an annular groove that contains a seal material around the outlet.

8. The fluid connector of claim 7 wherein the seal material is an o-shaped ring made of a material selected from rubber and silicone.

9. The fluid connector of claim 1 wherein each ferrule is an integral structure with no mating sleeve.

10. The fluid connector of claim 1 wherein each ferrule is made of a deformable material.

11. The fluid connector of claim 1 wherein a portion of each ferrule is sufficiently compressed against a part of a fluid conduit to form a fluid tight seal.

12. The fluid connector of claim 1 wherein each ferrule comprises an adapter bode having a nut on one side and having an elongated member on the other side and wherein the bore extends through the adapter body, nut and elongated member.

13. The fluid connector of claim 12 wherein the lower tapered exterior end is on the elongated member.

14. The fluid connector of claim 12 wherein the part of the bore that extends through the nut has a diameter that is larger than the part of the bore that extends through the elongated member.

15. The fluid connector of claim 13 wherein each ferrule is an integral structure with no mating sleeve.

16. The fluid connector of claim 1 wherein each channel defines a conical-shaped cavity.

17. The fluid connector of claim 1 wherein the means for applying the axial compressive force enables the fluid connector o operate at a pressure of at least about 500 psi.

18. The fluid connector of claim 1 wherein each ferrule comprises an upper handle, an externally threaded portion, and wherein the bore extends through the upper handle, externally threaded portion, and the lower tapered exterior end.

19. The fluid connector of claim 18 wherein the part of the bore that extends through the tapered end has a diameter that is narrower than the part of the bore that extends through the handle.

20. The fluid connector of claim 18 wherein each ferrule is an integral structure with no mating sleeve.