US 9,492,097 B2Granted

Needle length determination and calibration for insertion guidance system

AssigneeC. R. Bard, Inc.

InventorsBryson G. Wilkes, Jon B. Newman

Life of this patent

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Abstract

A guidance system for assisting with the insertion of a needle or other medical component into the body of a patient is disclosed. The guidance system utilizes ultrasound imaging or other suitable imaging technology. In one embodiment, the guidance system comprises an imaging device including a probe for producing an image of an internal body portion target, such as a vessel. One or more sensors are included with the probe. The sensors sense a detectable characteristic related to the needle, such as a magnetic field of a magnet included with the needle. The system includes a processor that uses data relating to the detectable characteristic sensed by the sensors to determine a position and/or orientation of the needle in three spatial dimensions. In yet another embodiment, systems and methods for determining the length of the needle to be guided by the guidance system are disclosed.

Claims8

Dependent claims

A method for placing a medical component using an ultrasound imaging system, the ultrasound imagine system including an ultrasound probe having a plurality of magnetic sensors, the medical component including a magnetic element, the method comprising:

positioning the medical component in a predetermined orientation with respect to the ultrasound probe such that a first angle is defined between the medical component and the ultrasound probe;
detecting a magnetic field of the magnetic element by the plurality of magnetic sensors in order to generate magnetic field strength data;
determining a position of the magnetic element relative to the magnetic sensors in two spatial dimensions using the magnetic field strength data;
calculating a length of the medical component using the first angle and the determined two-dimensional position;
and
depicting on a display a position of the medical component with respect to an ultrasound image produced by the ultrasound imaging system based on the calculated length of the medical component.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/543,586Filed 6 Jul 2012 · continuation in part
Priority: 26 Nov 2007
Published: US 2013/0006102 A13 Jan 2013
Granted: 15 Nov 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 5/283
For electrocardiography [ECG]: invasive
A61B 5/062
Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing…
A61B 8/0841
Involving detecting or locating foreign bodies or organic structures: for locating instruments
A61B 34/20
Computer-aided surgery; Manipulators or robots specially adapted for use in surgery: surgical navigation systems; Devices for tracking or guiding…

Family

Application60/990,242Us provisional application · filed 26 Nov 2007
Application61/045,944Us provisional application · filed 17 Apr 2008
Application61/091,233Us provisional application · filed 22 Aug 2008
Application61/095,451Us provisional application · filed 9 Sep 2008
Application61/095,921Us provisional application · filed 10 Sep 2008
Application12/323,273Parent of this continuation-in-part · filed 25 Nov 2008
Application61/349,771Us provisional application · filed 28 May 2010
Application13/118,033Parent of this continuation-in-part · filed 27 May 2011
Application61/505,036Us provisional application · filed 6 Jul 2011
US 2013/0006102 A1Pre-grant publication · published 3 Jan 2013
US 8,388,541 B2Parent of this continuation-in-part
US 2009/0156926 A1Published application
US 2011/0282188 A1Published application
US 2014/0163356 A2Published application
US 9,554,716 B2Related patent
US 9,492,097 B2This patent

From the US filing history. Foreign family members aren’t listed.