Fluid drying mechanism

• US 9,757,052 B2
• Filed: 05/10/2006
• Issued: 09/12/2017
• Est. Priority Date: 05/10/2005
• Status: Active Grant

• Current Assignee: Oridion Medical (1987) Ltd. (Medtronic Plc)
• Original Assignee: Oridion Medical (1987) Ltd. (Medtronic Plc)
• Inventors: Levitsky, Gershon, Colman, Joshua Lewis
• Primary Examiner(s): Ditmer, Kathryn E
• Application Number:
  US11/914,135
• Publication Number:
  US 20090088656A1
• Time in Patent Office: 4,143 Days
• Field of Search: 12820512, 12820527, 12820622, 600529, 600532, 7386323
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/0808 Condensation traps
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/1065 in the expiratory path
• CPC Class Codes: A61M 2205/3633 thermally insulated
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)

Abstract

There is provided an exhaled breath moisture reduction system including a dryer mechanism and a connector adapted to connect the dryer mechanism proximate to a respiratory output device. There is also provided an exhaled breath sampling assembly including an airway adaptor and a moisture reduction sleeve comprising a material adapted to reduce moisture and a connector adapted to connect said sleeve substantially adjacent to a breath sampling inlet within the adaptor. Also provided, a method of sampling breath which includes attaching an exhaled breath moisture reduction sleeve substantially adjacent to a breath sampling inlet.

Claims

1. A moisture reduction system comprising:

a respiratory output device;

a dryer tube configured to be coupled to the respiratory output device and comprising a material configured to absorb moisture, wherein the material is essentially impermeable to gases;

a first connector disposed on a first end of the dryer tube and configured to removably attach the dryer tube to the respiratory output device, wherein the first connector comprises a first proximal end, a first distal end, and a first central bore extending between the first proximal end and the first distal end;

a gripper removably coupled to the first connector and comprising a tapered body having a thermally insulating foamy material, a second proximal end, a second distal end, and a second central bore extending between the second proximal end and the second distal end, wherein, when the gripper is coupled to the first connector, the second proximal end of the gripper abuts a first outer surface of the respiratory output device, a first portion of an inner wall of the tapered body is in contact with an outer wall of the first connector along a portion of a length of the first connector, and a second portion of the inner wall of the tapered body is radially spaced apart from the outer wall of the first connector by a gap, and wherein the inner wall of the tapered body defines the second central bore;

a second connector at least partially covering a second outer surface of an outlet of the dryer tube, wherein the second connector comprises a coupler configured to connect the moisture reduction system to a capnograph.

2. The moisture reduction system of claim 1, wherein the gripper is slidingly positioned with respect to the dryer tube.

3. The moisture reduction system of claim 1, wherein an inner surface of the tapered body is spaced apart from an exterior surface of the dryer tube.

4. The moisture reduction system of claim 1, wherein the dryer tube material is a copolymer of tetrafluoroethylene and perfluoro-3, 6-dioxa-4-methyl-7-octene sulfonic acid.

5. The moisture reduction system of claim 1, wherein the respiratory output device comprises a breath sampling tube, an airway adaptor, a cannula or an airway tube.

6. The moisture reduction system of claim 1, wherein the second proximal end of the gripper extends past the first proximal end of the first connector such that the first proximal end of the first connector is not in contact with the first outer surface of the respiratory output device when the dryer tube is attached to the respiratory output device.

7. The moisture reduction system of claim 1, wherein the second distal end of the gripper terminates before the first distal end of the first connector when the gripper is coupled to the first connector such that the first distal end is not covered by the gripper.

8. The moisture reduction system of claim 1, wherein a diameter of the second central bore of the gripper decreases from the second proximal end to the second distal end.

9. The moisture reduction system of claim 1, wherein the first connector comprises an annular opening disposed on the first proximal end and defined by an exterior surface of a first wall and an interior surface of a second outer wall of the first connector, wherein the first wall defines at least a portion of the first central bore and the second wall is adjacent to the gripper when the gripper is coupled to the first connector.

10. The moisture reduction system of claim 1, wherein a diameter of the first central bore of the first connector increases between the first proximal end and the first distal end.

11. The moisture reduction system of claim 1, comprising a reinforcing element disposed along at least a portion of a length of the dryer tube.

12. The moisture reduction system of claim 1, wherein the gap extends to the second distal end of the gripper.