Pivotable Tissue Retraction Bands for Clear Endoscopic Access
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Solution Overview
Problem
Existing endoscopic tissue retraction systems obstruct the physician's view and interfere with accessory tools, increasing procedure time, complexity, and risk of perforation or bleeding during tissue dissection.
Innovation Solution
A tissue retraction device with a compliant or semi-compliant traction band and pivotable attachment members, allowing for independent tissue retraction without obstructing the endoscopic view, using swivels to alleviate torsional strain and a filament to limit over-stretching, and multiple clips for adjustable traction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional traction systems are used in endoscopic procedures, then tissue retraction can be achieved, but the physician's view is obstructed and accessory tools are interfered with
Solution Approach 1:
The patent extracts the traction function from the endoscope assembly by using a separate, self-contained traction band that can be independently applied to the tissue. This allows the traction mechanism to be removed from the traditional endoscopic configuration, eliminating the obstruction of view and interference with accessory tools while maintaining effective tissue retraction capability
Solution Approach 2:
The traction band acts as an intermediary element between the tissue and the endoscopic instruments. It provides the necessary retraction force through its elastic properties while being physically separate from the endoscope, thus mediating the interaction between tools and tissue without blocking the physician's view or interfering with tool maneuverability
2Ease of operation
If traditional traction systems are used, then tissue retraction is provided, but procedure time and complexity increase
Solution Approach 1:
The traction band is designed as a self-contained system that can be independently applied and adjusted without requiring integration with the endoscopic instruments. The elastic band automatically provides appropriate traction force through its material properties, eliminating the need for complex mechanical linkages and reducing the time required for setup and adjustment during the procedure
3Ease of operation
If traditional traction systems are used, then tissue retraction is achieved, but the risk of perforation or bleeding increases
Solution Approach 1:
The patent utilizes changes in the physical parameters of the traction band, specifically its elastic properties and deformability, to provide gentle yet effective tissue retraction. The band's ability to stretch and contract within controlled limits allows for gradual tissue manipulation, reducing the sudden forces that could cause perforation or bleeding while maintaining adequate retraction for safe dissection
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
Provides efficient and controlled tissue retraction, reducing procedure time and risk of complications by maintaining clear visualization and facilitating precise manipulation of tissues during endoscopic procedures.
Implementation Method 1
a traction band comprising a compliant or semi-compliant material
Implementation Method 2
The first and second swivels may pivot around a longitudinal axis of the traction band
Data Source
AI summary
The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to a tissue traction device for endoscopic procedures such as tissue dissection. For example, a tissue traction device may include first and second attachment members pivotably attached by first and second swivels to opposite ends of a stretchable traction band comprising a compliant or semi-compliant material.