Endoscopic Instrument for Simultaneous Polyp Resection and Retrieval
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Solution Overview
Problem
Current colonoscopy techniques are inefficient and imprecise in removing sessile polyps and multiple polyps, leading to sample bias and increased risk of missed cancerous lesions due to the need for separate cutting and retrieval tools, which prolong procedures and leave behind potentially malignant tissue.
Innovation Solution
An improved endoscopic instrument with a power-driven head capable of cutting and retrieving polyps within a single instrument channel, utilizing a cutting shaft and aspiration channel connected to a vacuum source for simultaneous resection and removal of polyps without the need to alternate tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate cutting tools and retrieval tools are used for polyp removal, then the procedure can be performed with standard endoscope channels, but the procedure time increases and precision decreases due to tool alternation
Solution Approach 1:
The patent combines the cutting function and retrieval function into a single integrated instrument. The cutting shaft with cutting elements can cut polyps while the same instrument simultaneously retrieves the cut polyps through its hollow structure, eliminating the need to alternate between separate cutting tools and retrieval tools.
Solution Approach 2:
The cutting shaft serves multiple functions: it acts as a cutting tool with rotating cutting elements, a retrieval tool through its hollow channel structure, and a conduit for removing debris. This multi-functional design allows a single instrument to perform what previously required multiple specialized tools.
2Manufacturing precision
If multiple separate instruments are used for cutting and retrieving polyps, then each tool can be optimized for its specific function, but the overall procedure becomes more time-consuming and complex
Solution Approach 1:
The cutting and retrieval functions are merged into a single instrument operated by a single operator. The cutting shaft can precisely cut polyps while simultaneously retrieving them through its hollow structure, maintaining precision while eliminating the time loss associated with tool alternation.
Solution Approach 2:
The instrument enables continuous operation where cutting and retrieval occur simultaneously without interruption. The hollow cutting shaft allows polyp fragments to be removed through the same instrument during the cutting process itself, maintaining continuous useful action rather than alternating between discrete steps.
3Measurement precision
If separate tools are used for cutting and retrieving polyps, then tool specialization is achieved, but sample bias occurs and diagnostic accuracy decreases
Solution Approach 1:
The single instrument allows the operator to consistently remove complete polyps including the stalk, rather than sampling only accessible portions. The cutting shaft can cut through the entire polyp structure and retrieve it completely through its hollow channel, eliminating sample bias and improving diagnostic accuracy.
Solution Approach 2:
The instrument is designed to recover and retrieve the complete polyp specimen including the stalk and base, rather than discarding portions that are difficult to access. The hollow shaft structure allows retrieval of the entire removed tissue sample for complete pathological examination.
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
Enhances precision and efficiency in polyp removal, reducing procedure time and minimizing the risk of missed lesions by allowing for the complete removal of sessile and multiple polyps in a single operation, thereby improving diagnostic accuracy and patient safety.
Implementation Method 1
The second proximal end of the flexible portion is configured to couple to a vacuum source such that the resected material entering the aspiration channel via the material entry port is removed from the aspiration channel at the material exit port
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A surgical console includes a drive assembly, vacuum interface, fluid transfer device, user interface, and control circuit. The drive assembly is configured to be coupled to an endoscopic tool and to be rotated by a motor. The vacuum interface is configured to apply a vacuum to the endoscopic tool. The fluid transfer device is configured to flow fluid through the endoscopic tool. The user interface is configured to receive a user input indicating at least one of instructions to rotate the endoscopic tool while applying the vacuum, or to flow fluid through the endoscopic tool. The control circuit controls at least one of the drive assembly, the vacuum interface, or the fluid transfer device based on the instructions, and is configured to cause the drive assembly to rotate the endoscopic tool while the vacuum interface applies the vacuum responsive to the user input indicating instructions to rotate the endoscopic tool.