Gauge tee device

• US 20070001447A1
• Filed: 05/18/2006
• Published: 01/04/2007
• Est. Priority Date: 05/20/2005
• Status: Active Grant

• Current Assignee: Meissner Filtration Products, Inc.
• Original Assignee: George Fennington
• Inventors: Fennington, George
• Granted Patent: US 7,373,825 B2
• Time in Patent Office: Days
• US Class Current: 285/133.110
• CPC Class Codes: F16L 41/008 for connecting a measuring instrument connecting means for pressure measuring apparatus G01L19/0007
• CPC Class Codes: F16L 41/021 T- or cross-pieces F16L41/025, F16L41/026, F16L41/028 take precedence

Abstract

A disposable sanitary gauge tee with no dead zone for use in pressure measurement of fluid in disposable tubing including a body having a main fluid passageway in fluid connection with a proximal end of a pressure fluid passageway, the main fluid passageway including a fluid port and a second fluid port, wherein a hose barb is operatively attached to the body at the fluid port and the second fluid port, wherein the disposable tubing can be removably attached to the hose barbs, and the pressure fluid passageway including a distal end for removable attachment of a sanitary pressure gauge and a biocompatible gauge protector for isolation of the fluid from the sanitary pressure gauge. No dead zone is achieved within the gauge tee as the proximal end of the pressure fluid passageway is substantially the same diameter as the distal end of the pressure fluid passageway, therein providing a total transfer of fluid within the pressure fluid passageway during fluid flow. A method of measuring pressure of fluid within disposable tubing using the disposable sanitary gauge tee and a method of measuring pressure of fluid in a closed system are further included.

Claims

1. A disposable sanitary gauge tee with no dead zone for use in pressure measurement of fluid in disposable tubing comprising:

a body including a main fluid passageway in fluid connection with a proximal end of a pressure fluid passageway;

said main fluid passageway including a fluid port and a second fluid port, wherein a hose barb is operatively attached to said body at said fluid port and said second fluid port, wherein said disposable tubing can be removably attached to said hose barbs;

said pressure fluid passageway including a distal end for removable attachment of a sanitary pressure gauge and a biocompatible gauge protector for isolation of said fluid from said sanitary pressure gauge; and

said proximal end of said pressure fluid passageway being substantially the same diameter as said distal end of said pressure fluid passageway, therein providing a total transfer of fluid within said pressure fluid passageway during fluid flow.

2. The disposable sanitary gauge tee of claim 1, wherein said distal end of said pressure fluid passageway has an outer diameter of ¾

inch and said hose barbs have an outer diameter of ¼

inch for attachment to disposable ¼

inch inner diameter tubing.

3. The disposable sanitary gauge tee of claim 2, wherein said body is made from materials chosen from the group consisting of polymers, Kynar®

PVDF, plastics, polypropylene, and any other suitable pharmaceutical grade material.

4. The disposable sanitary gauge tee of claim 1, wherein compression fittings are removably attached to an attachment point of said disposable tubing for use in high pressure measurement applications.

5. The disposable sanitary gauge tee of claim 4, wherein said compression fittings accommodate ¼

inch to ⅜

inch inner diameter disposable tubing.

6. The disposable sanitary gauge tee of claim 5, wherein said distal end of said pressure fluid passageway has an outer diameter of ¾

inch and said hose barbs have an outer diameter of ¼

inch for attachment to disposable ¼

inch inner diameter tubing.

7. The disposable sanitary gauge tee of claim 6, wherein said body is made from materials chosen from the group consisting of polymers, Kynar®

PVDF, plastics, polypropylene, and any other suitable pharmaceutical grade material.

8. The disposable sanitary gauge tee of claim 1 for use in a process selected from the group consisting of aseptic filtration, upstream management of chromatography with disposable devices, capsule conditioning, capsule flushing, viral clearance filtration or processes, buffer filtration or flushes, diafiltration, monitoring air blow-down of process tubing or systems, aseptic downstream pressure measurement of filtration or validated processes, aseptic measurement of tangential flow filtration, disposable system production of carcinogenic/oncological products, or any other process with cleaning validation issues.

9. A method of measuring the pressure of fluid within disposable tubing, including the steps of:

removably attaching the disposable sanitary gauge tee with no dead zone of claim 1 to disposable tubing;

removably attaching a sanitary pressure gauge and a biocompatible gauge protector to a distal end of the disposable sanitary gauge tee;

flowing fluid through the disposable tubing; and

measuring the pressure of the fluid.

10. A method of measuring the pressure of fluid within disposable tubing without a dead zone of stagnant fluid, including the steps of:

removably attaching the disposable sanitary gauge tee of claim 1 to disposable tubing;

removably attaching a sanitary pressure gauge and a biocompatible gauge protector to a distal end of the disposable sanitary gauge tee;

flowing fluid through the disposable tubing; and

measuring the pressure of the fluid.

11. A method of measuring pressure of fluid within a disposable sterile closed system, including the steps of:

removably attaching at least one disposable sanitary gauge tee of claim 1 to disposable tubing;

removably attaching a sanitary pressure gauge and a biocompatible gauge protector to each distal end of each disposable sanitary gauge tee;

removably attaching at least one fluid device to the disposable tubing;

flowing fluid through the disposable tubing;

measuring the pressure of the fluid;

and collecting fluid product in a sterile bag.