Implant Interface Deviation Visualization for Surgical Guidance

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Solution Overview

Problem

Current methods for pre-planning implant positions in computer-assisted surgery often contradict spatial restrictions imposed by implant connectors, leading to anatomical deformations and difficulties in connecting implants, as surgeons may need to move placed implants, causing detrimental movements.

Innovation Solution

A method using a processing system to obtain interface and reference data, determining deviations between pre-planned and reference positions, and providing visualizations to guide surgeons in adapting implant positions to ensure correct alignment and connection without anatomical deformations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If pre-planned implant positions are used without considering spatial restrictions, then surgical planning is simplified, but implant connection becomes impossible or requires anatomical deformations

Engineering Contradiction:

Improvesimplicity of surgical planningVSAvoidfeasibility of implant connection

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The system performs preliminary verification of implant positions against spatial restrictions before the actual surgical procedure. By checking whether pre-planned positions satisfy connector constraints in advance and providing feedback for adjustment, the system ensures that implant positions are both surgically planned efficiently and connection-feasible, resolving the contradiction between planning simplicity and connection reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides feedback to the surgeon when pre-planned implant positions do not satisfy spatial restrictions imposed by implant connectors. This feedback loop enables the surgeon to adjust positions while maintaining anatomical correctness, thereby ensuring both ease of planning and reliability of implant connection

Inventive Principle:

Principle #23Feedback

2Reliability

If implant positions are moved to accommodate connector spatial restrictions, then implant connection becomes possible, but anatomical deformations occur

Engineering Contradiction:

Improvefeasibility of implant connectionVSAvoidanatomical deformations

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system applies preliminary anti-action by preventing the harmful effect of anatomical deformations before they occur. It does this by verifying implant positions against spatial restrictions in advance and guiding adjustments that maintain anatomical correctness, thus avoiding the need to move implants after placement which would cause detrimental anatomical deformations

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The system acts as an intermediary between the implant positions and spatial restrictions by providing computational verification and guidance. This intermediary function enables the surgeon to adjust positions while maintaining anatomical correctness, thereby ensuring implant connection feasibility without causing anatomical deformations

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If implant connector is reshaped to couple to all implant interfaces, then connection becomes possible, but device complexity and surgical time increase

Engineering Contradiction:

Improvefeasibility of implant connectionVSAvoidcomplexity of implant connector adaptation

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary verification of whether implant positions satisfy spatial restrictions before the surgical procedure. By identifying and flagging position conflicts in advance, the system prevents the need for complex intraoperative reshaping of implant connectors, thereby maintaining device simplicity and reducing surgical time while ensuring connection feasibility

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20230363823A1Technique For Guiding A Surgeon On How To Adapt A Pre-Planned Position Of At Least One Implant Interface

Publication Date: 2023.11.16 STRYKER EUROPEAN OPERATIONS LIMITED

AI summary

A method for guiding a surgeon on how to adapt a pre-planned position of an implant interface. The implant interface is configured to couple to an implant connector configured to connect the implant interface with an implant interface of another implant. The method is performed by a processing system and comprises obtaining a pre-planned position of an implant interface, obtaining reference positions of the implant interface, determining a deviation between the pre-planned position and the reference positions, and triggering display of a visualization comprising an indication of the deviation to guide a surgeon on how to adapt the pre-planned position of the implant interface. A system and a computer program are also described.