Helical-Coil Tissue Resection for Single-Procedure Lung Lesion Removal
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Solution Overview
Problem
Current methods for lung lesion removal, particularly for small and intermediate nodules, suffer from limited diagnostic accuracy and require multiple invasive procedures, leading to potential sampling errors and significant recovery times due to the difficulty in localizing and excising deep lung lesions.
Innovation Solution
A tissue resection device with a helical coil and central tube configuration, equipped with electrodes and snares, allows for precise penetration, clamping, sealing, and cutting of lung tissue to remove entire lesions, minimizing healthy tissue removal and enabling accurate diagnosis without secondary procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional needle biopsy is used for lung lesion removal, then the procedure is minimally invasive, but diagnostic accuracy is limited and sampling errors occur
Solution Approach 1:
The device segments the biopsy process into multiple functional components: a cutting element for tissue removal, a clamping element for securing the lesion, and a sealing element for hemostasis. This segmentation allows each component to perform its specific function optimally, improving diagnostic accuracy by enabling complete lesion removal while maintaining procedural feasibility through modular design
Solution Approach 2:
The device employs a nested configuration where the cutting element, clamping element, and sealing element are arranged concentrically within a single access device. This nesting allows multiple functions to be integrated into one procedure, improving diagnostic accuracy through complete lesion excision while maintaining ease of operation through a unified instrument that can be inserted through a single puncture site
2Reliability
If multiple invasive procedures are performed for lung lesion removal, then complete lesion excision can be achieved, but recovery time increases and healthy tissue loss increases
Solution Approach 1:
The device merges multiple functions (cutting, clamping, sealing) into a single integrated system that can be deployed through one puncture site. This consolidation enables complete lesion excision in a single procedure, improving reliability while reducing recovery time by eliminating the need for multiple separate invasive procedures and subsequent healing periods
Solution Approach 2:
The access device is designed as a universal tool that performs cutting, clamping, and sealing functions through a single puncture site. This multi-functionality allows complete lesion removal in one procedure, improving reliability while reducing overall treatment time and healthy tissue loss compared to multiple specialized procedures
3Reliability
If deep lung lesions are excised through traditional methods, then complete removal is possible, but localization difficulty increases and healthy tissue loss increases
Solution Approach 1:
The device employs preliminary localization through imaging guidance (CT, MRI, or ultrasound) to identify the deep lung lesion's precise position before the procedure. The needle is then guided to this pre-identified location, enabling accurate targeting of deep lesions while minimizing damage to surrounding healthy tissue through precise, focused intervention
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 accurate, single-procedure removal of lung lesions with reduced healthy tissue loss, eliminating the need for subsequent surgeries and facilitating localized chemotherapy or radiation treatment.
Implementation Method 1
A tissue resection device with a helical coil and central tube configuration, equipped with electrodes and snares, allows for precise penetration, clamping, sealing, and cutting of lung tissue
Data Source
AI summary
A tissue resection apparatus is provided which includes an outer tube with a helical coil disposed on a distal end. The coil is provided with a first electrode. A central tube has a distal edge profile comprising one or more surface segments. One of the surface segments includes a second electrode. The central tube is slidably disposed within the outer tube and positioned such that second electrode opposes at least a portion of the first electrode. A cutting tube is slidably disposed within the central tube and includes a cutting edge.