US 11,810,473 B2
Optical surface tracking for medical simulation
Matthew Wang, Los Angeles, CA (US); Kresimir Petrinec, Los Angeles, CA (US); Gabriele Nataneli, Beverly Hills, CA (US); and Eric Savitsky, Malibu, CA (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed by SonoSim, Inc., Santa Monica, CA (US)
Filed on Jan. 29, 2020, as Appl. No. 16/776,348.
Claims priority of provisional application 62/798,281, filed on Jan. 29, 2019.
Prior Publication US 2020/0242971 A1, Jul. 30, 2020
Int. Cl. G09B 23/28 (2006.01); G06T 7/73 (2017.01); G06T 7/70 (2017.01); G06V 20/64 (2022.01); G06V 20/00 (2022.01); A61B 90/00 (2016.01); A61B 34/20 (2016.01)
CPC G09B 23/286 (2013.01) [A61B 34/20 (2016.02); A61B 90/36 (2016.02); G06T 7/70 (2017.01); G06T 7/75 (2017.01); G06V 20/64 (2022.01); G06V 20/95 (2022.01); A61B 2034/2055 (2016.02); A61B 2090/367 (2016.02); G06T 2207/10028 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A system for training a user to use a medical ultrasound device, the system comprising:
a) an instrument that mimics the medical ultrasound device, the instrument comprising:
i) an enclosure defining an opening; and
ii) a camera housed inside the enclosure and configured to view out the opening, the camera having a fixed focus;
b) a computing device operatively connected to the instrument to receive information from the camera;
c) a plurality of markers, each marker being comprised of a grid having 6 squares by 6 squares, the marker having a dimension of approximately 4 mm by 4 mm, each marker encoding a unique numerical value, and having a position, an orientation, a size, a shape, and a spacing relative to each other, wherein the size, the shape, and the spacing relative to each other are known by the computing device in advance, and can be associated with the encoded numeric value by using an algorithmic mapping or a look-up table, wherein each marker comprises a visibly opaque but infrared transparent layer, wherein the plurality of markers are placed adjacent to each other to form an optical tag having a dimension of approximately 7 cm by 7 cm, wherein the optical tag encodes a specific body region;
d) a surface upon which the plurality of markers are attached, the surface selected from a group consisting of a flat surface and a three-dimensional mode;
e) a light source configured to illuminate a set of markers from the plurality of markers that are visible to the camera through the opening; and
f) a simulator executable by the computing device to run a simulation of a procedure in real time, wherein the set of markers viewable by the camera through the opening contain information for generating an ultrasound image directly from the set of markers viewable by the camera.