Patient reference tool for rapid registration

Patent metadata

Field	Value
Publication number	US-2017239015-A1
Application number	US-201515518312-A
Country	US
Kind code	A1
Filing date	Jul 31, 2015
Priority date	Oct 14, 2014
Publication date	Aug 24, 2017
Grant date	—

Abstract

An apparatus is provided that is at least partially visible by both a three dimensional (3D) scanner system of a medical navigation system and a tracking system of the medical navigation system. The apparatus includes a rigid member, a plurality of identifiable features attached to the rigid member and visible by the tracking system, a distinct identifiable portion visible by the 3D scanner system, and a connector mechanism attached to the rigid member to connect the apparatus to a location. The apparatus is in a field of view of the 3D scanner system and the tracking system within a timeframe of the 3D scan.

First claim

1 . A patient reference device for use during a medical procedure, the patient reference device comprising:
a housing having a back side and a front side; a plurality of tracking markers attached to the front side of the housing; a three dimensional indicator formed on the front side of the housing; the housing extending around the at least three tracking markers and beyond a horizontal plane defined by tops of the at least three tracking markers, the housing terminating at a substantially continuous edge; and a sterile cover attached to the substantially continuous edge of the housing for covering the housing and the tracking markers.

2 . The patient reference device according to claim 1 , wherein the housing is attachable to a patient reference arm that is attachable to a Mayfield head clamp.

3 . The patient reference device according to claim 1 , wherein there are at least three tracking markers attached to the front side of the housing.

4 . The patient reference device according to claim 1 , wherein the tracking markers are selected from the group consisting of passive reflective tracking spheres, active infrared markers, active light emitting diodes, and a graphical pattern.

5 . The patient reference device according to claim 1 , wherein the three dimensional indicator is formed on the front side of the housing.

6 . The patient reference device according to claim 1 , wherein the three dimensional indicator is engraved on the front side of the housing.

7 . The patient reference device according to claim 1 , wherein the three dimensional indicator includes a raised surface portion on the front side of the housing.

8 . The patient reference device according to claim 1 , wherein the three dimensional indicator includes at least three separate unique indicators.

9 . An apparatus having at a subset of an area visible by both a three dimensional (3D) scanner system of a medical navigation system and a tracking system of the medical navigation system, the apparatus comprising:
a rigid member; a plurality of tracking markers attached to the rigid member and visible by the tracking system; a three dimensional indicator formed on a front side of the rigid member and visible by the 3D scanner system; a connector mechanism attached to the rigid member to connect the apparatus to a location; and a sterile cover attached to the rigid member for covering the rigid member and the tracking markers, wherein the apparatus is in a field of view of the 3D scanner system and the tracking system within a timeframe of the 3D scan.

10 . The apparatus according to claim 9 , wherein the tracking markers include reflective markers attached to the front side of the rigid member and the tracking system includes a camera.

11 . The apparatus according to claim 9 , wherein the rigid member is substantially rigid in shape.

12 . The apparatus according to claim 9 , wherein the three dimensional indicator includes a three dimensional graphical pattern formed on the rigid member.

13 . The apparatus according to claim 12 , wherein the three dimensional graphical pattern is at least one of engraved and etched in the rigid member.

14 . The apparatus according to claim 12 , wherein the three dimensional graphical pattern includes a raised surface portion on the rigid member.

15 . The apparatus according to claim 9 , wherein the apparatus further comprises:
a strap connected to the rigid member for securing the apparatus to a patient.

16 . The apparatus according to claim 15 , wherein the strap is attachable around a head of the patient.

17 . The apparatus according to claim 9 , wherein the apparatus is securable to a patient using a medical adhesive.

18 . The apparatus according to claim 9 , wherein the timeframe is at least one frame of the 3D scan.

19 . The apparatus according to claim 9 , wherein the location is a reference location comprising at least one of a fixed location on a Mayfield clamp, a bed, and a stretcher and the connector mechanism is attached to the rigid member.

20 . The apparatus according to claim 9 , wherein the reference location includes being attached onto a patient.

21 . The apparatus according to claim 9 , wherein the apparatus is wearable.

22 . The apparatus according to claim 9 , wherein the apparatus is sterilizable.

23 . The apparatus according to claim 9 , wherein the field of view includes a patient reference.

24 . The apparatus according to claim 9 , wherein the apparatus is spherical in shape.

Assignees

• Sela Gal
• Lui Dorothy
• Srimohanarajah Kirusha
• Vuong Thanh Vinh

Inventors

• Sela Gal
• Lui Dorothy
• Srimohanarajah Kirusha
• Vuong Thanh Vinh

Classifications

• A61B46/10

  specially adapted for instruments{, e.g. microscopes} · CPC title

• A61B2090/3979

  infrared · CPC title

• A61B2034/2055

  Optical tracking systems · CPC title

• A61B50/13

  Trolleys{, e.g. carts} · CPC title

• A61B2034/2048

  using an accelerometer or inertia sensor · CPC title