Surgical Knife Sharpening Without Disassembly
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Solution Overview
Problem
The reprocessing of multi-function surgical instruments, particularly in disassembly, cleaning/disinfection, component replacement, refurbishment, reassembly, and sterilization, is challenging due to their complex design and spatial constraints.
Innovation Solution
A method for sharpening the cutting edge of a surgical instrument's knife without disassembling the front end assembly, involving positioning the end effector assembly in a fixture, using a jack to maintain jaw members in a spaced-apart position, advancing the knife, and retaining it in an extended position for sharpening, allowing for sharpening without disassembling the instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the surgical instrument is disassembled for sharpening the knife, then the cutting edge can be accessed for sharpening, but the reprocessing time and complexity increase
Solution Approach 1:
The front end assembly is separated as a distinct module containing the knife and end effector assembly, allowing the knife to be sharpened while the assembly remains connected. This segmentation enables access to the cutting edge through the open jaw configuration without requiring complete disassembly of the instrument.
Solution Approach 2:
A jack is introduced as an intermediary device to maintain the jaw members in a spaced-apart position during sharpening. This intermediary mechanism allows the knife to be extended and sharpened while keeping the end effector assembly in a stable, accessible configuration.
2Ease of operation
If the jaw members are kept in spaced-apart position during sharpening, then the knife can be extended and sharpened, but additional devices (jack) are required
Solution Approach 1:
The jack serves as a simple intermediary device that provides mechanical support to maintain the jaw members in a spaced-apart position. This straightforward mechanism enables knife extension and sharpening without requiring complex disassembly procedures or multiple specialized tools.
3Ease of operation
If the knife is extended between the jaw members for sharpening, then the cutting edge is accessible, but the knife must be retained in position
Solution Approach 1:
The jack acts as a positioning intermediary that maintains the jaw members in a fixed spaced-apart configuration, which in turn holds the knife in the extended position between the jaws. This single intermediary device simultaneously achieves both jaw separation and knife positioning, simplifying the overall process.
Data Source
AI summary
A method of sharpening a cutting edge of a knife of a surgical instrument includes manipulating an end effector assembly of a surgical instrument such that first and second jaw members of the end effector assembly are disposed in a spaced-apart position, retaining the first and second jaw members in the spaced-apart position, advancing a knife of the surgical instrument to an extended position wherein the knife extends between the first and second jaw members, retaining the knife in the extended position, and sharpening a cutting edge of the knife.