Cranial Implant Lead Storage Structure for Low-Profile Wire Management
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Solution Overview
Problem
Existing medical devices with electrical leads face challenges due to excess lead length, which cannot be altered post-manufacturing, leading to visible or palpable bumps under the patient's scalp and requiring additional anatomical manipulation during implantation.
Innovation Solution
A low-profile cranial implant with a static cranial implant designed to house and manage excess electrical lead length, featuring a cavity and annular circumferential recess for winding the leads, along with guiding channels and flanges for secure fixation and rotation, minimizing visible bumps and protecting the leads from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sufficient lead length is provided to allow proper placement of electrodes in various anatomical locations, then the device can accommodate different patient anatomies, but excess lead length creates visible or palpable bumps under the patient's scalp
Solution Approach 1:
The patent extracts the excess lead length from the visible subcutaneous space and relocates it into a dedicated storage cavity within the cranial implant. The cavity is specifically designed to accommodate the coiled excess leads, separating them from the anatomical surface where they would create visible or palpable bumps.
Solution Approach 2:
The excess leads are nested within the cavity of the cranial implant. The cavity acts as a container that houses the coiled leads, effectively nesting the excess lead length inside the implant structure rather than allowing it to protrude externally.
2Ease of operation
If excess lead length is coiled and placed between the skin and cranium, then the leads are managed, but additional manipulation of the patient's anatomy and leads is required during placement
Solution Approach 1:
The cranial implant is pre-designed with an integrated cavity specifically configured for lead storage before implantation. This preliminary design eliminates the need for surgeons to perform complex manual coiling and positioning maneuvers during surgery, as the storage space is already prepared and built into the implant structure.
Solution Approach 2:
The implant structure itself provides the lead management function through its integrated cavity. Rather than requiring the surgeon to manually manage and coil the leads, the implant's own design facilitates lead storage, allowing the device to serve its own organizational needs without external intervention.
3Adaptability or versatility
If the cranial implant is designed with a cavity for lead storage, then excess lead length can be stored effectively, but the implant profile increases
Solution Approach 1:
The cavity is positioned along the outer first surface of the implant, utilizing the surface area dimension rather than increasing thickness. By distributing the storage volume across the implant's surface area rather than concentrating it in the thickness dimension, the implant maintains a low profile while still providing adequate lead storage capacity.
Data Source
AI summary
A low-profile cranial device is adapted for covering and protecting electrical leads. The cranial device includes a static cranial implant shaped and dimensioned for housing a functional neurosurgical implant including electrical leads. The static cranial implant includes an outer first surface along an exterior side of the static cranial implant, an inner second surface along an interior side of the static cranial implant, and a peripheral wall extending between the outer first surface and the inner second surface. A cavity is formed along the outer first surface of the static cranial implant, the cavity being shaped and dimensioned to house the functional neurosurgical implant in a manner allowing the electrical leads to be wound up to store excess electrical lead length.