Surgical Accessory Template for Ultrasound Transducer Positioning

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Solution Overview

Problem

Current methods for treating brain tissue with ultrasound devices require precise positioning and minimal opening dimensions in the cranial bone, which is challenging due to the need for accurate contour tracing and positioning of intracranial devices during craniectomy procedures.

Innovation Solution

A surgical kit comprising a medical device with ultrasound transducers and a surgical accessory that approximates the device's dimensions, featuring holes aligned with transducer axes for neuronavigation, deformable material, and textured surfaces to facilitate optimal opening dimensions and positioning on the cranial bone.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the opening dimensions are minimized to protect dura mater and reduce tissue disruption, then the precision of opening contour tracing and positioning becomes more challenging

Engineering Contradiction:
Improvetissue disruptionVSAvoidopening contour tracing precision
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The surgical accessory creates a physical copy/template of the required opening dimensions on the cranial bone surface. This template allows precise contour tracing without requiring complex intraoperative measurements, thereby maintaining high positioning precision while minimizing opening size to protect dura mater and reduce tissue disruption.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The surgical accessory acts as an intermediary tool between the surgeon and the cranial bone. It provides a stable reference framework with pre-configured opening contours and transducer position markers, facilitating accurate tracing and positioning while enabling minimal opening dimensions that protect underlying structures.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the opening dimensions are minimized for optimal treatment effectiveness, then the difficulty of accurate positioning increases

Engineering Contradiction:
Improvetreatment effectivenessVSAvoidpositioning ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The surgical accessory is designed with pre-configured opening contours and transducer position markers before the procedure. This preliminary configuration allows the surgeon to directly transfer the optimal opening dimensions and transducer positions to the cranial bone, maintaining treatment effectiveness while simplifying intraoperative positioning.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The surgical accessory incorporates visual markers (such as colored indicators or contrasting surfaces) that make transducer positions and opening contours visually distinguishable. This enhances positioning ease by providing clear visual references during the procedure, ensuring accurate placement of transducers and definition of opening contours.

Inventive Principle:
Principle #32Color changes

3Measurement precision

If the surgical accessory includes detailed positioning features for transducer alignment, then the complexity of the accessory increases

Engineering Contradiction:
Improvetransducer position accuracyVSAvoidaccessory complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The surgical accessory is divided into distinct functional segments: a body portion for positioning, a perimeter portion for opening definition, and integrated markers for transducer alignment. This segmentation allows each component to perform its specific function with high precision while keeping the overall design manageable and not excessively complex.

Inventive Principle:
Principle #1Segmentation

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

Enables precise and minimally invasive implantation of ultrasound devices by defining the opening dimensions and position accurately, ensuring effective treatment of brain tissue while minimizing tissue disruption.

Implementation Method 1

a plurality of transducers 101-109 fixed on the support structure 100 for the generation of ultrasound waves for treating a brain disease

Methodology Applied
Scientific EffectUltrasound: Ultrasound

Data Source

PatentUS11849958B2Surgical kit for use in a craniectomy procedure
Publication Date: 2023.12.26 CARTHERA SAS
  • US11849958B2 patent drawing
  • US11849958B2 patent drawing
  • US11849958B2 patent drawing

AI summary

The present invention relates to a surgical kit for use in a craniectomy procedure, the surgical kit comprising: a medical device to be implanted in a cranial bone of a patient, the medical device (10) including several transducers for emitting ultrasound waves for treatment of brain tissue, a surgical accessory (20) intended to be positioned on the cranial bone of the patient, the surgical accessory (20) including a body whose outer perimeter defines the dimensions of an opening that is to be made in the cranial bone of the patient in order to receive the medical device, characterized in that the surgical accessory (20) comprises a plurality of holes (201) formed in the body, the position of each hole (201) on the body coinciding with the position of the axis of symmetry of a respective transducer, such that the accessory is able to be positioned optimally through the joint use of a neuronavigation system.