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Pneumatic tocodynamometer

A technology of tocometer and internal air, which is applied in pressure sensor, medical science, diagnosis, etc., and can solve the problems of high cost and non-replacement

Inactive Publication Date: 2013-10-09
THE BOARD OF TRUSTEES OF THE UNIV OF ARKANSAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside of the retainer TOCO is that it is quite costly and non-replaceable, although it is often discarded unintentionally

Method used

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  • Pneumatic tocodynamometer
  • Pneumatic tocodynamometer
  • Pneumatic tocodynamometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Preferred Embodiments of the Invention Referring now to Figure 1-13 to describe.

[0026] refer to Figure 12 and 13 , The embodiment of pTOCO10 includes a sensor body 11 with a bottom profile, and a shallow recess 12 surrounded by a retainer 13 is provided in the middle of the bottom profile. The shallow recess 12 communicates either through a low volume airway tube 14 to a low volume tube 15 connected to a pressure sensor 16 or directly to a pressure sensor 17 embedded in the sensor body 11 . Pressure sensor 17 may be mounted to electronics board 52 . The pressure sensor 17 and electronics board 52 may be placed in the recess 53 of the sensor body 11 so that the pressure sensor 17 is in fluid communication with the airway tube 14 and thus the air volume of the recess 12 . It is advisable to seal the electronic board within the recess 53 .

[0027] The elastic membrane 18 extends across the sensor body 11 of the pTOCO 10 and traps a small amount of air. Membrane...

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PUM

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Abstract

A pneumatic tocodynamometer ("pTOCO") (10) having a guard-ring (13) with a thin elastic membrane (18) stretched across a shallow spherical depression (12) trapping a small volume of air in the center of the guard-ring (13). A pressure transducer (17) may be molded into the body 11 of the pTOCO (10). In an alternative embodiment, the air volume beneath the membrane (18) of the pTOCO (10) may be connected via a low volume air conduit (14, 15) to a separate pressure transducer (16).

Description

technical field [0001] The invention relates to a tocometer, in particular to a pneumatic tocometer. Background technique [0002] In clinical practice, the contraction of the uterus during labor is measured by using a surface strain gauge-based tocodynamometer (TOCO) and / or an intrauterine pressure gauge (IUPC). The two devices differ in their advantages and disadvantages in access frequency, amplitude, and duration of contraction activity. [0003] The standard for TOCO design is the "retainer" style developed by Smyth et al. in the 1950s. A retainer TOCO includes strain gauges supported within a rigid ring. The strain gauge compliance of the retainer TOCO is very low; for example, it does not move when force is applied. The disadvantage of the retainer TOCO is that it is quite costly and non-replaceable, although it is often discarded unintentionally. Replaceable disposable TOCO can avoid cross-contamination between patients. [0004] Therefore, it would be desirable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/103
CPCA61B5/02411A61B5/113A61B5/4362A61B2562/0247A61B5/4356
Inventor H·埃斯瓦兰C·L·劳沃里J·D·威尔森
Owner THE BOARD OF TRUSTEES OF THE UNIV OF ARKANSAS