Device and method for measuring anatomic geometries

• US 20120035507A1
• Filed: 07/22/2011
• Published: 02/09/2012
• Est. Priority Date: 07/22/2010
• Status: Abandoned Application

• Current Assignee: University of Maryland
• Original Assignee: University of Maryland
• Inventors: George, Ivan, Lee, Gyusung, Park, Adrian
• Application Number:
  US13/136,086
• Publication Number:
  US 20120035507A1
• Time in Patent Office: Days
• US Class Current: 600/587
• CPC Class Codes: A61B 1/00097 Sensors
• CPC Class Codes: A61B 1/00147 Holding or positioning arrangements
• CPC Class Codes: A61B 1/00158 using magnetic field
• CPC Class Codes: A61B 2017/00203 with speech control or speech recognition
• CPC Class Codes: A61B 2034/2068 using pointers, e.g. pointers having reference marks for determining coordinates of body points
• CPC Class Codes: A61B 2090/3983 Reference marker arrangements for use with image guided surgery
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 5/107 Measuring physical dimensions, e.g. size of the entire body or parts thereof
• CPC Class Codes: A61B 5/6847 mounted on an invasive device

Abstract

Provided herein is a device and system for measuring an object geometry. The device comprises a probe with contacting and tracking ends and a tracking means and actuation control unit positioned on the probe. The system further comprises a measurement and post processing unit in electronic communication with the tracking means and/or the actuation control unit. Also provided is a method for measuring a geometry of an anatomic object, for example, a hernia. One or more locations of interest on the object are touched directly with the contacting probe end and the location or motion data of the probe end and of the tracking means are tracked and transmitted to the measurement and post processing unit as the point(s) of interest are touched. The data is processed into the geometric measurement and a representative image may be displayed.

Claims

1. A device for measuring an object geometry, comprising:

a probe having a distal contacting end and a proximal tracking end;

means for tracking a location of the contacting end of the probe positioned near the proximal end electronically connected to the contacting end of the probe; and

an actuation control unit electronically connected with at least the tracking sensor.

2. The measuring device of claim 1, further comprising:

a measurement and post processing unit in electronic communication with one or both of the tracking sensor or the actuation control unit, said measurement and post processing comprising or is networked to a computer having a memory and a processor configured to process instructions to;

control activation of the device;

collect data received from the contacting end of the probe and the tracking means comprising location of one or more points of interest on or proximate to the object, said location established via direct touch with the contacting end of the probe;

convert three dimensional coordinates corresponding to location to two dimensional coordinates; and

print or display one or both of the measurement results or image of the object geometry.

3. The measuring device of claim 1, wherein the object is a hernia, the measurement and post processing unit further configured to:

estimate hernia size and shape based on the received data;

estimate a mesh size based on measured area and boundary of the hernia; and

display the hernia shape and estimated mesh shape for optimization of the mesh.

4. The measuring device of claim 1, further comprising:

a handle affixed to the proximal end thereof or is formed out of the proximal end of the probe.

5. The measuring device of claim 4, wherein the actuation control unit is affixed at a distal end of the handle or between the tracking means and the distal end of the handle.

6. The measuring device of claim 1, wherein the contacting end of the probe further comprises a tip affixed thereto in electronic communication with the tracking means.

7. The measuring device of claim 1, wherein the contacting end of the probe is configured for direct touch measurement on the object comprising point-to-point linear or non-linear measurement, multiple points linear measurement, outlining or volume visualization.

8. The measuring device of claim 1, wherein the tracking means is affixed in direct contact with the probe or is affixed to a spacer in direct contact with the probe.

9. The measuring device of claim 1, wherein the tracking means comprises one or more motion tracking sensors or a motion sensor array.

10. The measuring device of claim 1, wherein the activation control unit comprises one or more buttons for start, pause and start commands, one or more foot pedals, gaze- or voice-controlled activation, one or more mice or one or more keyboards.

11. The measuring device of claim 1, wherein the device is unitized such that one or both of the tracking sensor or activation control unit is permanently affixed thereto or is a clip-on device such that one or both of the tracking means or activation control unit are removably affixed thereto.

12. The measuring device of claim 1, wherein the device is an endoscopic device.

13. The measuring device of claim 1, wherein the object is a hernia or other anatomic defect.

14. A method for measuring a geometry of an anatomic defect in a subject, comprising:

locating the anatomic defect in the subject; and

measuring the geometry of the defect via direct touch with the device of claim 1.

15. The method of claim 14, wherein the measuring step comprises:

directly touching, with the contacting end of the probe, one or more points of interest on or proximate to the defect in the subject;

tracking the location of the one or more points as each is touched;

transmitting signals corresponding to location data of the one or more points to the measuring and post processing unit; and

processing the received data signals to a geometric measurement of the anatomic defect.

16. The method of claim 15, wherein the geometric measurement corresponds to a length of one or more segments of the defect, to a circumference of an edge of the defect, to an outline of the defect, to a surface area of the defect, or to a volume of the defect.

17. The method of claim 14, wherein the processing step further comprises displaying an image of the measured geometry of the defect.

18. The method of claim 14, wherein the anatomic defect is a hernia, the method further comprising:

sizing a mesh based on the measured geometry; and

repairing the hernia with the mesh.

19. A system for measuring a geometry of an anatomic object, comprising:

a probe having a contacting tip at a distal end and a proximal tracking end;

said tip configured for direct touch of points of interest on the object;

one or more tracking sensors or sensor array affixed at the proximal probe end electronically connected to the probe tip, said one or more tracking sensors or array configured to track and transmit motion of the probe tip and location of the tracking sensor(s) or array itself;

a measurement and post processing unit in electronic communication with the tracking sensor or sensor array, said unit configured to process location data of the probe tip and tracking sensor(s) and to convert the data to a visual geometry of the object; and

an actuation control unit electronically connected with at least the tracking sensor or the measurement and post processing unit, said control unit configured to respond to operator commands.

20. The object measuring system of claim 19, wherein the probe further comprises a handle affixed to the proximal end thereof or is formed out of the proximal end.

21. The object measuring system of claim 19, wherein the actuation control unit is affixed at a distal end of the handle or between the one or more tracking sensors or sensor array and the distal end of the handle.

22. The object measuring system of claim 19, wherein the probe, one or more tracking sensor(s) or array and the actuation control unit comprise a unitized device such that the tracking sensor(s) or array and the activation control unit are permanently affixed to the probe or comprises a clip-on device such that one or both of the tracking sensor(s) or array or the activation control unit are removably affixed to the probe.