Lead Material Removal Device for Smaller Extraction Sheaths
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Solution Overview
Problem
Existing lead extraction methods, particularly for implantable medical leads, face challenges such as increased risk of vascular damage and lead breakage due to the disparity between the lead's outer diameter and the inner diameter of extraction sheaths, which often require cutting the lead to fit, compromising structural integrity and increasing complications.
Innovation Solution
A material removal device with a housing and a removal element, such as a skiver blade, is used to shave or slice material from the outer surface of the lead, reducing its diameter to fit within smaller extraction sheaths without cutting, thereby maintaining structural integrity and minimizing vascular injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lead is cut to fit the extraction sheath, then the lead can be inserted into the extraction sheath, but the structural integrity of the lead is compromised and lead breakage risk increases
Solution Approach 1:
The lead is prepared in advance by removing material from its outer surface to reduce its diameter before extraction. This preliminary action allows the lead to fit within the extraction sheath without cutting, thereby maintaining structural integrity while enabling successful extraction.
2Object-affected harmful factors
If the lead outer diameter is reduced to fit smaller extraction sheaths, then vascular damage risk is minimized, but lead structural integrity may be compromised
Solution Approach 1:
Material is removed locally from the outer surface of the lead in a controlled manner. This localized material removal reduces the lead diameter to fit smaller extraction sheaths and minimize vascular damage, while preserving the overall structural integrity of the lead by maintaining the core architecture.
3Adaptability or versatility
If material is removed from the lead outer surface, then the lead diameter is reduced for better extraction compatibility, but the lead manufacturing complexity increases
Solution Approach 1:
The patent replaces complex mechanical cutting systems with a simpler material removal mechanism. By using a removal element that shaves or slices material from the lead outer surface, the system achieves diameter reduction with less complexity compared to traditional cutting methods, thereby improving extraction compatibility while controlling processing complexity.
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
The device facilitates safer and more efficient lead extraction by reducing procedure time, minimizing vascular injury, and ensuring consistent lead mechanics during extraction.
Implementation Method 1
a removal element positioned within the housing, wherein the removal element is configured to remove material from an outer surface of the implantable medical lead
Data Source
AI summary
A material removal device includes a housing and a removal element positioned within the housing. The housing defines an opening sized to receive an implantable medical lead of a medical device. The housing is sealed when the implantable medical lead is advanced through the opening. The housing defines a chamber. The removal element is configured to remove material from an outer surface of the implantable medical lead. The chamber is configured to retain the material.