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Breath sampling device

A sampling device and sample technology, which is used in measurement devices, medical science, instruments, etc., can solve the problems of insufficient color change of the indicator, unusable applications of the device, and inability to be observed with the naked eye.

Inactive Publication Date: 2008-06-18
SENSAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a device such as that described in European Patent 1149557 A2 cannot be used for this application since the color change of the indicator at such low concentrations is not large enough to be seen by the naked eye

Method used

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Examples

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Embodiment Construction

[0035] Referring to FIGS. 1-4 , a preferred embodiment of the breath sampler of the present invention includes two cylinders 10 , 20 . The first cylinder 10 is open at one end and has an end cap 12 at the other end provided with an off-centre eye 14 . The second cylinder 20 has a similar end cap 22 at one end, the cylinder cap 2 has a similar off-centre aperture 24 and the other end of the second cylinder 20 is closed, in this embodiment with a removable cap 28 . The diameter of the second cylinder 20 is such that it can fit snugly in the first cylinder 10 , and its length is longer than that of the first cylinder 10 . The second cylinder 20 fits inside the first cylinder 10 so that the end caps 12, 22 are close to each other at the same end.

[0036] Each cylinder 10, 20 also has a corresponding opening 16, 26 of similar size in its side wall. These respective openings 16, 26 are arranged to align when the cylinders 10, 20 are rotated relative to each other to align the ape...

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Abstract

A hollow container defining a sample chamber is formed of at least two parts (30, 40) which fit together and have apertures (34, 36; 44, 46) therein. One of the parts (40) is displaceable relative to the other part (30) between a first relative disposition of the parts in which the apertures are open so as to provide a clear path for air to pass through the container and a second relative disposition of the parts in which the apertures are closed so that there is no path for air to pass through and a volume of air is trapped in the chamber. In one version the part (40) is axially moveable relative to the other part (30). In another version where the parts are tubular one of the parts is rotatable relative to the other. In other versions the apertures are in respective end closures and end caps located thereover and the end caps are rotatable to align the apertures and open the chamber for air to pass through. In other versions, one of the parts is pivotable or bendable relative to the other to open or close the respective apertures. In yet other versions one part is rotatable on an axis transverse to the axis of the other part to open or close the respective apertures.

Description

technical field [0001] The present invention relates to a device for testing for the presence of a substance in a sample of a person's exhaled air. In some embodiments of the invention, the device can be used to detect ammonia in the breath of a patient infected with Helicobacter pylori. Background technique [0002] Breath sampling is often performed in the clinical context as a non-invasive diagnostic tool. Testing a sample of a person's exhaled air for the presence of substances that can indicate a specific underlying state. [0003] It is now generally accepted that infection with the bacterium Helicobacter pylori, discovered nearly 20 years ago, causes about one in ten people to develop gastric ulcers at some point in their lives, and many more suffer from gastritis, . Noninvasive screening for these bacteria can be performed using breath samples, which are often collected in a doctor's office and sent to an outside laboratory for analysis. Typically, patients provi...

Claims

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Application Information

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IPC IPC(8): A61B5/097G01N33/497
CPCG01N33/497A61B5/097
Inventor F·克瓦斯尼克S·R·斯麦克
Owner SENSAM
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