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Apparatus for detecting axial force in the digestive system

A measurement system, hollow technology, applied in electromagnetic measurement devices, testing muscle strength, applications, etc., can solve problems such as no measurement force

Inactive Publication Date: 2006-10-11
DITENS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the disclosed invention the balloon is the actual recorded position and no force is measured

Method used

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  • Apparatus for detecting axial force in the digestive system
  • Apparatus for detecting axial force in the digestive system
  • Apparatus for detecting axial force in the digestive system

Examples

Experimental program
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Embodiment Construction

[0042] figure 1 An aspect of the measurement principle of the invention is illustrated by schematically showing an extension probe with side walls and presenting a hollow lumen or channel 1 , 2 . The hollow cavity is filled with a conductive medium, preferably a liquid electrolyte such as water with NaCl solution. Two electrodes 5 are provided on the probe. The electrodes are connected to external devices by wires 3,4. When the probe is relaxed or not stretched, there is a distance D between the two electrodes 1 , while in the condition that the probe is under tension by applying a force F in the axial direction, the distance becomes D 2 . Electrodes are used to measure electrical properties in the fluid between them. When the probe is stretched axially, the electrical impedance will increase due to the smaller diameter of the fluid-filled channel and the longer distance between the electrodes.

[0043] By applying Ohm's law, U = Z x I, where U is the potential differenc...

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PUM

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Abstract

An apparatus and a method for measuring deformations and force applied to a probe are disclosed. The system may be a mechanical system a physical system or a biological system such as e.g. a bodily hollow system. The apparatus comprises an elongated elastic probe, a conducting medium attached to or contained by the probe, two or more electrodes being electrically connected by the conducting medium, the electrodes being attached to the probe, and the apparatus furthermore comprising means for measuring an electrical parameter, such as the potential difference between at least two of the number of electrodes, the measured electrical parameter being indicative of a deformation of the probe in at least the longitudinal direction of the elongated probe. The force applied to the probe may be determined from a pre-calibration of the electrical parameter-force relationship of the probe.

Description

technical field [0001] The present invention relates to devices and methods for detecting deformation and forces in a system. The system may be a mechanical system, a physical system or a biological system such as a bodily hollow system. Finally, the invention relates to the use of the device according to the invention. Background technique [0002] The function of organs such as the gastrointestinal tract, urinary tract, and blood vessels is largely mechanical. The following presentation mainly concerns the gastrointestinal tract, but the invention relates to similar applications in other hollow organs, and even to the measurement of deformations and forces in tissues such as in muscle, in plants and in engineered structures. [0003] In the gastrointestinal tract, what the stomach picks up is pushed further down the intestines, where it mixes with secreted fluids to digest and absorb food components. Despite the fact that distensibility is important for general function...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11A61B5/042A61B5/107G01B7/16A61B5/03A61B5/22A61B5/296
CPCA61B5/4255A61B2562/0252A61B2562/168A61B2562/043A61B5/227A61B5/6852G01B7/18A61B5/224A61B5/036A61B5/1107
Inventor 汉斯·格雷葛森莱恩·科里特·德鲁德
Owner DITENS