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Catheter tip positioning method

一种血管、预定时间段的技术，应用在导管、联接管、手术导航系统等方向，能够解决心脏病远程监控广泛接受、方式复杂等问题

Active Publication Date: 2012-11-28
BARD ACCESS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, remote monitoring of heart disease is not as widely accepted as it is expected to be and possible
One reason involves the relative complexity of acquiring signals related to cardiac activity, specifically ECG signals
Another significant limitation of current remote monitoring technologies is the use of communication channels that are difficult to interface at both the patient and physician levels, such as telephone lines

Method used

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Examples

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Embodiment Construction

[0036] The present invention will now be described with reference to the drawings, wherein like reference numerals refer to like parts throughout.

[0037] Embodiments of the present invention advantageously provide inventive instrument(s), computer-based data processing algorithms and methods for obtaining and using intravascular ECG in many clinical applications and settings. For example, the device may be used to guide endovascular devices in and around the heart, such as directing central venous access devices in the superior vena cava, right atrium, and right ventricle. Such central venous access devices may include central venous catheters (CVCs), peripherally inserted central catheters (PICCs), implantable ports, hemodialysis catheters, tunneled catheters, and other devices. Other devices that could benefit from guidance with inventive instrumentation are temporary pacemaker leads placed throughout the central venous system. Catheters and guidewires used in left heart ...

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Abstract

A computer-based method for positioning an endovascular device in or near the heart using electrocardiogram (ECG) signals is provided. The computer-based method includes receiving an endovascular ECG signal associated with an endovascular device, processing the endovascular ECG signal, over a plurality of predetermined time periods, to calculate a P-wave amplitude and a spectral power for each predetermined time period, determining a maximum P-wave amplitude from the plurality of P-wave amplitudes, and an associated maximum spectral power from the plurality of spectral powers, associating the maximum P-wave amplitude and the maximum spectral power with a predetermined location in or near the heart, calculating a location of the endovascular device, for each predetermined time period, based on a ratio of the P-wave amplitude to the maximum P-wave amplitude and a ratio of the spectral power to the maximum spectral power, and displaying the location of the endovascular device to a user.

Description

[0001] Cross References to Related Applications : This application claims priority to US Provisional Patent Application Serial No. 61 / 213,474, filed June 12, 2009, the entire disclosure of which is incorporated herein by reference. technical field [0002] The invention relates to an intravascular device positioning. In particular, the present invention relates to a method for positioning the tip of an endovascular device, such as a central venous catheter, in and around the heart using electrocardiogram (ECG) signals. Background technique [0003] The heart's conductive system creates specific electrical signals whose electrical energy distribution and behavior indicate specific locations within the chest cavity and / or specific heart functions or symptoms. Certain parameters of the electrical activity of the heart when measured intravascularly, ie from within the blood vessel or from within the heart, can be used to identify specific locations in the cardiovascular system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02A61B5/352A61B5/361A61B5/276A61B5/296A61B5/364
CPCA61B5/0006A61B5/0452A61B5/726A61B5/06A61B19/5244A61B5/04017A61B5/042A61B34/20A61B5/065A61B5/316A61B5/283A61B5/349A61M25/0105A61B5/353A61B5/743A61B5/6876A61B5/6852A61B5/7246A61M25/0014A61M2039/1077A61M2039/1083A61M2039/1088
Inventor S·格伦沃尔德
Owner BARD ACCESS SYST
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