US 8,282,570 B2Granted

Sidestream gas sampling system with detachable sample cell

AssigneeRIC Investments, LLC

InventorsDavid R Rich, Anthony T Pierry, Brian M Fudge, John L Sandor, John A Triunfo, Jr.

Life of this patent

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Abstract

A sidestream sampling system includes a sidestream gas measurement assembly and a sample cell configured to be assembled therewith. The sidestream gas measurement assembly includes a receptacle for removably receiving at least a portion of the sample cell. The sample cell is coupled to a sampling tube that is configured to communicate with an airway of an individual. When the sample cell is assembled with the sidestream gas measurement assembly, a window of the sample cell is oriented toward a corresponding source and/or detector of the sidestream gas measurement assembly to facilitate monitoring of an amount of at least one gas or vaporized material in an individual's respiration.

Claims20

Dependent claims

A sidestream gas sampling system, comprising:

(1) a sidestream gas measurement assembly, comprising,
(a) a housing,
(b) a radiation source disposed in the housing,
(c) a radiation detector disposed in the housing,
(d) a receptacle defined in the housing, and
(e) a first alignment mechanism associated with the receptacle;
and
(2) a sample cell assembly adapted to be coupled to the sidestream gas measurement assembly, the sample cell assembly comprising:
(a) a sampling tube have a first tube end portion adapted to be disposed in fluid communication with an airway of a patient and a second tube end portion, wherein the sampling tube carries a gas sample from the first tube end portion to the second tube end portion, and wherein the gas sample is a fraction of a total gas flow to or from the patient,
(b) a sample cell having a first cell end portion coupled to the second tube end portion of the sampling tube, the sample cell further having a second cell end portion substantially opposite the first cell end portion of the sample cell,
(c) a sample chamber defined in the sample cell for receiving a respiratory sample from the patient via the sampling tube,
(d) a first window defined in the sample cell, and
(e) a second alignment mechanism associated with the sample cell, wherein the first alignment mechanism and the second alignment mechanism cooperate to enable the sample cell to be inserted into the receptacle in a proper orientation, wherein the second alignment mechanism comprises a latching arm extending from a region near the second cell end portion of the sample cell towards the first cell end portion of the sample cell, and wherein the latching arm forms an acute angle with the region near the second cell end portion of the sample cell.

10 more elements

A method of sidestream respiratory analysis, comprising the acts of:

providing a sample cell assembly comprising (a) a sampling tube have a first tube end portion and a second tube end portion, and (b) a sample cell having a first cell end portion coupled to the second tube end portion of the sampling tube, the sample cell further having a second cell end portion substantially opposite the first cell end portion of the sample cell;
placing the first tube end portion of the sampling tube in fluid communication with an airway of a patient;
carrying a gas sample from the first tube end portion to the second tube end portion, wherein the gas sample is a fraction of a total gas flow to or from the patient;
orienting the sample cell such that a first alignment mechanism associated with a receptacle defined in a housing of a sidestream gas measurement assembly is aligned with a second alignment mechanism associated with the sample cell;
inserting the sample cell into the receptacle responsive to the first alignment mechanism and the second alignment mechanism being properly oriented relative to one another, wherein the second alignment mechanism comprises a latching arm extending from a region near the second cell end portion of the sample cell towards the first cell end portion of the sample cell, and wherein the latching arm forms an acute angle with the region near the second cell end portion of the sample cell;
and
analyzing a parameter of the gas sample using the sidestream gas measurement assembly.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/025,411Filed 4 Feb 2008 · continuation
Priority: 4 Apr 2002
Published: US 2008/0200825 A121 Aug 2008
Granted: 9 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

A61B 5/0833
Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption: measuring rate of oxygen consumption
A61B 5/097
Measuring devices for evaluating the respiratory organs: devices for facilitating collection of breath or for directing breath into or through…
A61B
Medical diagnosis and surgery

Family

Application60/370,002Us provisional application · filed 4 Apr 2002
Application10/384,329Parent of this continuation · filed 7 Mar 2003
US 2008/0200825 A1Pre-grant publication · published 21 Aug 2008
US 7,341,563 B2Parent of this continuation
US 2003/0191405 A1Published application
US 8,282,570 B2This patent

From the US filing history. Foreign family members aren’t listed.