Navigation system

Patent metadata

Field	Value
Publication number	US-2016206381-A1
Application number	US-201414914016-A
Country	US
Kind code	A1
Filing date	Aug 28, 2014
Priority date	Sep 6, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

The invention relates to a navigation system for navigating an interventional device ( 11 ) like a catheter and an interventional system comprising the navigation system. A position and shape determining unit ( 13 ) determines and stores a first position and shape of the interventional device within a living being ( 9 ) during a first interventional procedure like a first chemoembolization session and determines a second position and shape of an interventional device within the living being during a subsequent second interventional procedure like a second chemoembolization session. During the second interventional procedure the interventional device is navigated based on the stored first position and shape and based on the second position and shape. This allows considering during the second interventional procedure the path of the interventional device used during the first interventional procedure. In particular, this allows navigating the interventional device along the same path during the first and second interventional procedures.

First claim

1 . A navigation system for navigating an interventional device to a target region within a living being, the navigation system comprising:
a position and shape determining unit for determining and storing a first position and shape of an interventional device within the living being during a first interventional procedure, wherein the position and shape determining unit is further adapted to determine a second position and shape of an interventional device within the living being during a subsequent second interventional procedure, and a navigation device for navigating the interventional device during the second interventional procedure based on the stored first position and shape and based on the second position and shape.

2 . The navigation system as defined in claim 1 , wherein the position and shape determining unit is adapted to determine the first and second positions and shapes by optical shape sensing.

3 . The navigation system as defined in claim 1 , wherein the navigation device comprises a display for displaying the stored first position and shape and the second position and shape and a user interaction unit for allowing a user to move the interventional device during the second interventional procedure based on the displayed first and second positions and shapes.

4 . The navigation system as defined in claim 3 , wherein the navigation system further comprises an imaging device for generating an image of the living being at least during the second interventional procedure, wherein the display is adapted to show an overlay image showing the stored first position and shape and the second position and shape overlaid on the image.

5 . The navigation system as defined in claim 1 , wherein the navigation device is adapted to compare the stored first position and shape with the second position and shape and to navigate the interventional device during the second interventional procedure based on the comparison.

6 . The navigation system as defined in claim 1 , wherein the position and shape determining unit is adapted to continuously determine the second position and shape during the second interventional procedure, wherein the navigation device is adapted for navigating the interventional device during the second interventional procedure depending on the stored first position and shape and the actual second position and shape.

7 . The navigation system as defined in claim 1 , wherein the position and shape determining unit is adapted to determine and store the first position and shape of the interventional device, when the interventional device has reached the target region during the first interventional procedure.

8 . The navigation system as defined in claim 1 , wherein the navigation system comprises a user interface allowing a user to indicate when the first position and shape should be stored, wherein the position and shape determining unit is adapted to store the first position and shape, when the user has indicated that the first position and shape should be stored.

9 . The navigation system as defined in claim 1 , wherein the navigation device comprises a user interface for allowing a user to indicate a part of the stored first position and shape, wherein the navigation device is adapted for navigating the interventional device during the second interventional procedure based on the indicated part of the stored first position and shape and the second position and shape.

10 . The navigation system as defined in claim 1 , wherein the position and shape determining unit is adapted to:
register the stored first position and shape and the second position and shape to each other such that a similarity measure, which is indicative of a degree of similarity between the stored first position and shape and the second position and shape, is maximized, determine whether during the first and second interventional procedures the navigation is performed along the same path based on the maximized similarity measure.

11 . The navigation system as defined in claim 1 , wherein the navigation system further comprises an inner structure providing unit for providing an inner structure of the living being, wherein the navigation device comprises a display for displaying the part of the inner structure from an entry location of the interventional device, at which the interventional device has entered the living being in the second interventional procedure, to a location of a tip of the interventional device as indicated by the second position and shape of the interventional device.

12 . The navigation system as defined in claim 1 , wherein the position and shape determining unit is adapted to determine and store in the first interventional procedure the position and shape of a first interventional device as the stored first position and shape and to determine in the second interventional procedure the position and shape of a second interventional device as the second position and shape and wherein the navigation device is adapted for navigating the second interventional device during the second interventional procedure based on the stored first position and shape and the second position and shape.

13 . An interventional system for applying an interventional procedure to a living being, the interventional system comprising:
an interventional device for performing the interventional procedure, and a navigation system navigating the interventional device to a target region within the living being as defined in claim 1 .

14 . (canceled)

15 . A navigation computer program for navigating an interventional device to a target region within a living being, the navigation computer program comprising program code means for causing a navigation system as defined in claim 1 to carry out following steps, when the navigation computer program is run on a computer controlling the navigation system;
determining and storing a first position and shape of an interventional device within the living being during a first interventional procedure and determining a second position and shape of an interventional device within the living being during a subsequent second interventional procedure, and
navigating the interventional device during the second interventional procedure based on the stored first position and shape and based on the second position and shape.

Assignees

• Koninkl Philips Nv

Inventors

• Grass Michael
• Kahya Neriman Nicoletta
• Prevrhal Sven
• Verstege Marco
• Hansis Eberhard Sebastian

Classifications

• A61B5/066

  Superposing sensor position on an image of the patient, e.g. obtained by ultrasound or x-ray imaging · CPC title

• A61B2034/2051

  Electromagnetic tracking systems · CPC title

• A61B2034/2061

  using shape-sensors, e.g. fiber shape sensors with Bragg gratings · CPC title

• A61B2090/376

  using X-rays, e.g. fluoroscopy · CPC title

• A61B34/20 Primary

  Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis · CPC title