Ultrasound guiding system and method for vascular access and operation mode

• US 20060184029A1
• Filed: 01/13/2006
• Published: 08/17/2006
• Est. Priority Date: 01/13/2005
• Status: Abandoned Application

• Current Assignee: Rch Systems, Ltd.
• Original Assignee: Rch Systems, Ltd.
• Inventors: Wischniewski, Esther, Haim, Ronen, Perets, Uri, Safran, Valery
• Application Number:
  US11/331,116
• Publication Number:
  US 20060184029A1
• Time in Patent Office: Days
• US Class Current: 600/443
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/489 Blood vessels
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61B 8/06 Measuring blood flow measuring volume flow in general G01F, e.g. G01F1/66, G01F1/72; measuring speed of fluids in general G01P5/00
• CPC Class Codes: A61B 8/0833 involving detecting or locating foreign bodies or organic structures
• CPC Class Codes: A61B 8/0841 for locating instruments
• CPC Class Codes: A61B 8/0858 involving measuring tissue layers, e.g. skin, interfaces
• CPC Class Codes: A61B 8/4483 characterised by features of the ultrasound transducer
• CPC Class Codes: A61B 8/463 characterised by displaying multiple images or images and diagnostic data on one display composite display in devices for short-range imaging with acoustic waves G01S7/52074
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: A61B 8/488 involving Doppler signals

Abstract

The present invention provides an ultrasound_medical imaging system with integrated devices and functionalities for use in wide range of medical procedures that require vascular and arterial access. The present invention discloses a method for detection, recognition and classification of blood vessels. Said method further calculates the optimal insertion parameters of catheter to the blood vessels. The present invention also exempts the user from handling several procedures simultaneously such as positioning the probe, observing the image or data on the systems screen and locating an accurate location on the surface and thus allowing the user to practice a more accurate procedure.

Claims

1. A method for blood vessel imaging, detection recognition and selection, said method comprising of:

a. receiving an vascular imaging and positioning information captured by ultrasound hardware;

b. processing of received ultrasound data for detection and recognition of blood vessels.

c. measuring and calculating of blood vessels dimensions and properties.

d. Creating synthetic representation of composite image of the blood vessel comprised of the ultrasound image and supplemental graphical elements and effects;

2. The method of claim 1 further comprising the steps of:

selecting of blood vessel suitable for vascular access and providing navigation information for vascular access support for invasive device

3. The method of claim 2 further comprising the step of monitoring of insertion process of the invasive device;

4. The method of claim 3 wherein the monitoring include blood vessel movement, position change or size variation due to expansion or contraction.

5. The method of claim 1 wherein measurements of the blood vessel include:

the diameter, depth and distance between the vessels.

6. The method of claim 1 further comprising the step of motion detection utilizing Doppler effect for measuring blood flow velocity and direction.

7. The method of claim 6 wherein the Doppler technique include one or any of the following:

Power Doppler Imaging with Pulse Doppler or Color Flow imaging.

8. The method of claim 1 wherein the ultrasound data acquisition is received from at least one linear arrays mounted on ultrasound probe.

9. The method of claim 1 further comprising the step of indexing of ultrasound data according to received position information, wherein each slice keeps his index according to its physical position inside of the probe and relative probe position.

10. The method of claim 1 wherein the synthetic representation include topological view of scanned area.

11. The method of claim 1 wherein the synthetic representation is a 2D or 3D image or combination.

12. The method of claim 1 wherein the graphical elements and effects include marking, coloring, pointing, guiding, adding explanatory images or text.

13. The method of claim 1 wherein processing of the ultrasound image include valve detection inside blood vessel.

14. The method of claim 1 wherein processing of the ultrasound image includes locating of blood clots.

15. The method of claim 2 further comprising the step of providing insertion parameters calculation, including insertion point calculation, insertion trajectory calculation, said calculation based on blood vessels properties measurements.

16. The method of claim 2 further comprising the step of illuminating specific points at the target vessel by a laser pointing device in accordance with insertion parameters calculations.

17. The method of claim 1 further enabling to operate the imaging process by voice commands using speech recognition modules;

18. The method of claim 1 wherein the processing of detection or recognition or both is based on pattern recognition or edge detection or both.

19. The method of claim 1 wherein a system for image guided vascular access is introduced.

20. The method of claim 9 wherein the positioning motion registration sensor is mounted on a probe.

21. The method of claim 1 wherein vessel verification is based on Power Doppler Imaging or Pulse Doppler or Color Flow Imaging.

22. The method of claim 1 wherein Imaging technique compromises automatic or manual operation

23. The method of claim 1 wherein synthetic image compromises grey ultrasound and vessel segmentation data.

24. The method of claim 23 wherein 3D synthetic images compromises image reconstruction of 2D slices.

25. The method of claim 23 wherein synthetic images compromises topological view of 3D image reconstruction technique.

27. The method of claim 13 wherein valve detected, includes one or any of the following detection:

Open, close or partly close.

28. The method of claim 14 wherein blood clots detected, includes one or all of the following detection, location, measurements or monitoring

29. The method of claim 1 wherein further compromising of blood vessel selection, includes automatic vessel selection best suitable for insertion.

30. The method of claim 1 wherein further compromising of blood vessel selection, includes voice manual command by user for an identified vessel of choice.

31. The method of claim 1 wherein further compromising of blood vessel selection, includes a screen pointing or touching selection command by user for an identified vessel of choice or location.

32. The method of claim 1 wherein measuring and calculating of blood vessels dimensions and properties, includes one or more of the following calculations:

insertion point, insertion trajectory, trajectory margins and custom scenarios.

33. The method of claim 3 wherein includes calculated measurements on synthetic or ultrasound image

34. The method of claim 4 wherein monitoring includes alignment and navigation of probe over blood vessel/s

35. The method of claim 32 wherein laser pointer device compromises the location of insertion point

36. The method of claim 1 wherein insertion navigation parameter are calculated and recalculated against data collected during insertion

37. The method of claim 36 wherein accurate insertion navigation parameter are provided to the user.

38. The method of claim 37 wherein parameters includes invasive device propagation path, margins, angel of insertion, distance to blood vessel, inner vessel measurement, as well as ultrasound image/s and supplemental graphical elements, symbols and effects;

39. The method of claim 38 wherein captured invasive device tip image is captured and mixed with blood vessel image.

40. The method of claim 37 wherein attention mode alerts of conflict within the set of parameters or close to blood vessel wall or when invasive device is sided away from trajectory.

41. The method of claim 40 wherein reverse attention mode includes an option alerting when an invasive device is positioned a short distance or pre selected distance from a vessel.

42. The method of claim 1 wherein at least one LCD is mounted on a probe for image and data display

43. The method of claim 1 wherein at least one LCD is mounted on a system for image and data display

26. The method of clam 5 wherein automatic measurements are performed on synthetic and non synthetic images.