Method for implant surgery using augmented visualization

Patent metadata

Field	Value
Publication number	US-11154379-B2
Application number	US-201415110540-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	Jan 21, 2014
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

A method for guiding the position of a dental drill for implant treatment of a patient, the method acquiring a volume image of patient anatomy; superimposing an image of a planned drill hole on a display of the acquired volume image according to observer instructions to form an implant plan; displaying at least a portion of the implant plan in stereoscopic form on a head-mounted device worn by an observer and tracking patient position so that the displayed portion of the implant plan is registered to the patient anatomy that lies in the observer's field of view; and highlighting the location of the planned drill hole on the head-mounted device display.

First claim

What is claimed is:

1. A method for drill placement for a dental drill procedure for implant treatment of a patient, comprising:
acquiring a volume image of patient dentition anatomy;
superimposing an image of a planned drill hole on a display of the acquired volume image according to observer instructions to form an implant plan;
displaying at least a portion of the implant plan in stereoscopic form on a head -mounted device worn by the observer along with a real-world view from the head mounted device and tracking patient position so that the displayed portion of the implant plan is registered to the patient dentition anatomy that lies in the observer's field of view and at least a portion of the implant plan is superimposed on the real-world view on the patient dentition anatomy in the observer's field of view;
highlighting the location of the planned drill hole on the head-mounted device display; and
tracking the position of the dental drill for comparison to the highlighted location, further comprising
disabling the registration of the implant plan to the patient dentition anatomy in response to a received instruction,
manipulating the acquired volume image to change one or more of a drill hole angle, a drill hole depth, or a drill hole location of the unregistered implant plan, and
receiving a subsequent instruction to shift the changed implant plan back into registration to the patient dentition anatomy in the observer's field of view.

2. The method of claim 1 wherein a display of the stereoscopic image of the at least a portion of the implant plan from the head mounted device alternates with a display of the real-world view from the head mounted device at least 20 times per second.

3. The method of claim 1 further comprising providing a message that indicates that the drill has reached a predetermined drill depth, wherein displaying the at least a portion of the implant plan on the head-mounted device comprises projecting the implant plan superimposed on the patient dentition anatomy.

4. The method of claim 1 wherein highlighting the location of the planned drill hole further comprises displaying a drill axis.

5. The method of claim 1 further comprising indicating, on the display, when the dental drill is in position for drilling the planned drill hole, wherein tracking the position of the dental drill comprises analyzing images from one or more cameras on the head-mounted device.

6. The method of claim 1 further comprising changing the stereoscopic display in accordance with a change in a field of view of the observer through the head-mounted device.

7. The method of claim 1 wherein the displayed portion of the implant plan comprises one or more markers.

8. The method of claim 1 further comprising displaying an indicator in the observer's field of view from the head-mounted device, wherein the indicator's appearance relates to one or more of the relative distance of the dental drill to the displayed drill hole, the angle of the dental drill relative to the displayed drill hole, and the relative depth of the drill hole, wherein the displayed indicator indicates a recommended change in the positioning of the dental drill.

9. The method of claim 8 , wherein tracking patient mouth anatomy comprises tracking the visible marker, wherein the marker is radio-opaque, wherein the marker is a first marker and wherein there is a second marker coupled to the dental drill, wherein the displayed indicator appears near the drill in the display from the head-mounted device, wherein the displayed indicator is a moiré pattern that is patterned to change its appearance according to the angle at which it is viewed, wherein the displayed indicator indicates a recommended change in the positioning of the dental drill.

10. The method of claim 9 wherein the visible marker is a first visible marker and further comprising at least a second visible marker in the mouth of the patient and wherein the first and at least the second visible markers are used to locate the planned drill hole of the implant plan.

11. The method of claim 1 further comprising changing the display of the image of the planned drill hole according to the position of the observer relative to the patient's mouth.

12. The method of claim 1 wherein the separation distance between a left-eye and a right-eye image in the stereoscopic display is adjustable by the observer.

13. A dental imaging apparatus, comprising:
a computerized tomography scanning apparatus that obtains a volume image of a patient from a plurality of two-dimensional images taken at different angles relative to the patient;
a host processor that is in signal communication with the computerized tomography scanning apparatus and that is adapted to generate the volume image from the plurality of two-dimensional images;
a first display that is in signal communication with the host processor and that provides an operator interface that is adapted to display positioning of at least a drill hole relative to the volume image; and
a second display of a head mounted device that is in signal communication with the host processor, wherein the second display is worn by an observer and further comprises at least a first camera that is adapted to acquire an image of the visual field of the observer, the second display enabling viewing at least a portion in stereoscopic form on a head-mounted device worn by the observer along with a real-world view from the head mounted device and tracking patient position so that the displayed portion of the implant plan is registered to the patient dentition anatomy that lies in the observer's field of view and at least a portion of the implant plan is superimposed on the real-world view on the patient dentition anatomy in the observer's field of view, where the location of the planned drill hole is highlighted on the second display, and
the second display enabling displaying an indicator in the observer's field of view from the head-mounted device, wherein the indicator's appearance relates to one or more of the relative distance of the dental drill to the displayed drill hole, the angle of the dental drill relative to the displayed drill hole, and the relative depth of the drill hole, wherein the displayed indicator indicates a recommended change in the positioning of the dental drill, wherein tracking patient mouth anatomy comprises tracking the visible marker, wherein the marker is radio-opaque, wherein the marker is a first marker and wherein there is a second marker coupled to the dental drill, wherein the displayed indicator appears near the drill in the display from the head-mounted device, wherein the displayed indicator is a moiré pattern that is patterned to change its appearance according to the angle at which it is viewed, wherein the displayed indicator indicates a recommended change in the positioning of the dental drill.

14. A method for drill placement for a dental drill procedure for implant treatment of a patient, comprising:
acquiring a volume image of patient dentition anatomy;
superimposing an image of a planned drill hole on a display of the acquired volume image according to observer instructions to form an implant plan;
displaying at least a portion of the implant plan in stereoscopic form on a head-mounted device worn by the observer along with a real-world view from the head mounted device and tracking patient position so that the displayed portion of the implant plan is registered to the patient dentition anatomy that lies in the observer's field of view and at least a portion of the implant plan is superimposed on the real-world view in the observer's field of vie

Assignees

• Trophy

Inventors

• Bothorel Sylvie
• Maillet Philippe

Classifications

• A61B6/5229

  combining image data of a patient, e.g. combining a functional image with an anatomical image · CPC title

• G03B42/026

  for obtaining three-dimensional pictures · CPC title

• A61B90/50

  Supports for surgical instruments, e.g. articulated arms · CPC title

• A61B90/37

  Surgical systems with images on a monitor during operation · CPC title

• A61B34/20

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