Bilateral Cochlear Implant Surgical Template for Symmetric Positioning

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Solution Overview

Problem

Bilateral cochlear implant surgeries often lack precise documentation of implantation angles, leading to potential asymmetrical sound reception and increased surgical time due to the need for sequential surgeries by different surgeons.

Innovation Solution

An adjustable surgical template system with left and right sides that fits over the patient's head, allowing adjustment of implant stimulator positions to ensure symmetric implantation sites, featuring adjustable connections, angle indicators, and holding magnets for precise alignment and marking during surgery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sequential implantation surgeries are performed on both sides, then the surgery can be completed with available surgical resources, but the total surgical time increases and asymmetrical implantation may occur

Engineering Contradiction:
Improvesurgical efficiencyVSAvoidtotal surgical time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by creating a custom-made template during the first surgery that captures the precise implantation position and angle. This template is then used in the second surgery to replicate the same positioning, eliminating the need for time-consuming measurements and ensuring symmetry without requiring both surgeries to be performed simultaneously.

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If different surgeons perform the separate surgeries, then surgical specialization is optimized, but implantation symmetry and precision are compromised

Engineering Contradiction:
Improvesurgical specializationVSAvoidimplantation symmetry
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies copying by creating a physical template that replicates the exact implantation parameters (position, angle, orientation) from the first surgery. This template serves as a reusable guide that can be used by different surgeons in the second surgery, ensuring that the implantation symmetry is maintained regardless of which surgeon performs the procedure.

Inventive Principle:
Principle #26Copying

3Device complexity

If no data is documented on implantation angle, then the surgical process is simpler, but precise replication for bilateral symmetry is impossible

Engineering Contradiction:
Improvedocumentation complexityVSAvoidimplantation angle accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent applies the intermediary principle by introducing a custom-made template as a physical mediator between the first and second surgeries. This template encapsulates all the implantation parameters (angle, position, orientation) in a tangible form that can be directly applied during the second surgery, eliminating the need for complex digital documentation while ensuring precise replication.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Productivity

If the implant stimulator position is not precisely adjusted, then the surgical procedure is faster, but symmetrical sound reception cannot be achieved

Engineering Contradiction:
Improvesurgical speedVSAvoidstimulator positioning accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-calculating and pre-positioning the implant stimulator location on the template during template creation. This allows the surgeon to simply align the template during the second surgery rather than performing complex measurements and calculations, achieving both speed and precision in stimulator positioning.

Inventive Principle:
Principle #10Preliminary action

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

Facilitates symmetrical implantation of bilateral hearing systems, reducing surgical time and ensuring optimal sound direction perception while providing aesthetic benefits through controlled symmetric implantation sites.

Implementation Method 1

there may be a holding magnet located within the outer outline of one of the implant stimulator templates configured to hold that implant stimulator template securely on the skin over an implanted magnet of a previously implanted stimulator

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentEP3203951B1Template for bilateral symmetric stimulator fixation/implantation
Publication Date: 2020.04.29 MED EL ELEKTROMEDIZINISCHE GERAETE GMBH
  • EP3203951B1 patent drawingFigure 1
  • EP3203951B1 patent drawingFigure 2A~2B
  • EP3203951B1 patent drawingFigure 3

AI summary

A bilateral hearing implant surgical template arrangement is described. An adjustable headpiece with left and right sides fits over the head of a surgical patient.. There are left and right implant stimulator templates, each configured to conform against an underlying side of the patient's head and each connected to a corresponding left and right side of the adjustable headpiece by an adjustable connection. Each adjustable connection is configured to allow adjustment of the position of the implant stimulator template with respect to the adjustable headpiece so as to define stimulator implantation sites at symmetric locations on each side of the patient's head.