Mixed Reality Surgical Guide for Bone Axis Detection
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Solution Overview
Problem
Conventional knee replacement procedures require invasive methods to identify the mechanical axis of the femur, leading to complications and increased surgery time, as they involve inserting a rod into the femur, which can be challenging and risky.
Innovation Solution
A mixed reality and 3D spatial mapping system is used to generate a virtual axis and surgical instruments, allowing for precise identification and cutting of bones without physically exposing the hip socket, utilizing a headset and 3D spatial mapping camera to project a holographic mechanical axis and cutting guides for accurate implant placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rod is inserted into the femur to identify the mechanical axis, then the mechanical axis can be identified, but the procedure becomes very invasive and causes complications
Solution Approach 1:
The patent uses optical labels and image processing to create a virtual copy of the mechanical axis identification process. Instead of physically inserting a rod into the femur, the system captures images of the femur with optical labels and computationally determines the mechanical axis, providing a non-invasive alternative that achieves the same measurement precision.
Solution Approach 2:
The patent replaces the mechanical rod insertion method with an optical and computational system. The mechanical action of inserting a rod is substituted by capturing optical images and processing them through image analysis algorithms to identify the mechanical axis, thereby eliminating the harmful mechanical intrusion while maintaining measurement accuracy.
2Measurement precision
If a rod is inserted into the femur to identify the mechanical axis, then the mechanical axis can be identified, but the surgery time increases
Solution Approach 1:
The system creates a virtual model of the femur and mechanical axis identification through image processing. By capturing images of optical labels on the femur and computationally determining the mechanical axis, the system eliminates the time-consuming physical rod insertion while maintaining accurate measurement, thereby reducing overall surgery time.
Solution Approach 2:
The patent performs the mechanical axis identification before the actual surgical cutting begins. By pre-determining the mechanical axis through image processing of optical labels, the system prepares all necessary guidance information in advance, allowing the surgeon to proceed directly to cutting without time-consuming intraoperative rod insertion and measurement.
3Measurement precision
If the hip socket is exposed to identify the mechanical axis, then the mechanical axis can be identified, but the procedure becomes more complex and risky
Solution Approach 1:
The system uses optical labels placed on the femur to create a virtual representation of the mechanical axis without requiring physical exposure of the hip socket. The image processing system computationally determines the mechanical axis based on the labeled points, providing a simplified non-invasive approach that reduces procedural complexity while maintaining measurement precision.
Solution Approach 2:
The patent replaces the mechanical and invasive hip socket exposure method with an optical imaging and computational analysis system. By capturing images of optical labels and processing them through algorithms, the system achieves mechanical axis identification without the complexity and risk of surgical exposure, thereby simplifying the overall procedure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enhances the accuracy and precision of bone cuts, reduces surgical invasiveness, and shortens recovery time by providing a non-invasive means to determine the mechanical axis and guide surgical cuts, improving the efficiency of knee replacement procedures.
Implementation Method 1
determining a location of the bone in a plurality of images of the optical label
Data Source
AI summary
A system for determining a location for a surgical procedure, having a 3D spatial mapping camera, the 3D spatial mapping camera configured to map a bone. The system also includes a marker attached to a distal end section of the bone, such that the 3D spatial mapping camera is configured to capture a plurality of images of the marker as the bone is rotated in a non-linear path. The images also include data identifying a location of the marker. The system also includes a computer system that receives the data from the images captured by the 3D spatial mapping camera and determines a location of a mechanical axis of the bone, and a mixed reality display, where the computer system is configured to send the location of the mechanical axis to the mixed reality display and the mixed reality display is configured to provide a virtual display of the mechanical axis of the bone.