Patent · US Active

Method and apparatus for determining an in vivo position of an esophageal catheter

US9055880B2 · kind B2 · utility

1Cited by

14References

13Claims

0Family size

Assignee

Maquet Critical Care AB · SE

Inventors

Fredrik Jalde · Bromma, SE
Georgios Psaros · Tullinge, SE

Key dates

Filing date	Dec 18, 2008
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Oct 11, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N1/3601
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

In a method and an apparatus for determining the position of an esophageal catheter that is inserted into the esophagus of a patient, the catheter having a number of electrodes, muscular activity of the diaphragm is stimulated by applying a stimulus signal that produces a myoelectrical signal in the diaphragm having a well-defined peak at a specific point in time. The myoelectrical signal is detected by respective pairs of electrodes of said catheter, and the electrode pair or pairs that detected the signal having the highest amplitude at the specific point in time is identified. If this electrode pair or these electrode pairs that detected the signal with highest amplitude are not located approximately at the middle of the catheter, an indication is emitted that the position of the catheter should be adjusted.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.