Telescopic Surgical Knife With Internal Illumination
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Solution Overview
Problem
Existing surgical knives face issues with external illumination, which results in shadows, reduced illuminating brightness, and inability to simultaneously provide shadow-free, smoke-absorbing, and telescopic functions due to fixed LED placement and increased size requirements.
Innovation Solution
A smoke-absorbing high-frequency surgical knife with internal illumination, featuring SMD LED lamp beads arranged in an annular shape and integrated with a telescopic smoke-absorbing tube, allowing the high-frequency electrode, light-emitting element, and LED lamp beads to synchronously stretch and retract, maintaining consistent illumination intensity and preventing shadows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If external LED lamp beads are installed on the surgical knife handle to achieve illumination, then the surgical site can be illuminated, but shadows are created and the field of vision is blocked
Solution Approach 1:
Instead of placing LEDs externally on the handle as conventional designs do, this patent inverts the illumination approach by embedding LEDs within the electrode structure itself. The electrode serves dual purposes: cutting tissue and providing illumination through integrated LEDs at its tip, eliminating shadows and vision obstruction while maintaining bright illumination at the surgical site.
Solution Approach 2:
The LED lamp beads are nested inside the electrode structure rather than being externally mounted. The electrode housing contains the LEDs, which are positioned to emit light directly at the surgical site through the electrode tip, creating an integrated illumination system that eliminates the need for separate external lighting components.
2Illumination intensity
If more LED lamp beads are installed to improve illuminating brightness, then the illumination intensity increases, but the space occupation increases and affects the field of vision
Solution Approach 1:
The electrode is designed with multi-functionality, serving both as the cutting instrument and as the illumination source housing. The electrode structure accommodates LED lamp beads within its own volume, eliminating the need for separate external illumination components and reducing overall space occupation while providing sufficient brightness.
3Device complexity
If LED lamp beads are fixedly arranged on the surgical knife handle, then the structure is simple, but they cannot stretch and retract synchronously with the electrode, reducing illuminating effect when electrode extends
Solution Approach 1:
The illumination system is made dynamic by integrating LEDs within the telescopic electrode structure. When the electrode extends or retracts, the embedded LEDs move synchronously with it, maintaining constant proximity to the surgical site and ensuring consistent illumination effectiveness throughout the full range of motion, unlike fixed external LEDs that become ineffective when the electrode extends.
4Adaptability or versatility
If external LED lamp beads are used for illumination, then the illumination function is added, but it is impossible to simultaneously achieve shadow-free, smoke-absorbing, and telescopic functions
Solution Approach 1:
Multiple functions are merged into a single integrated electrode structure: the electrode houses embedded LEDs for illumination, contains a smoke absorption channel for smoke evacuation, and maintains telescopic capability for length adjustment. This consolidation of illumination, smoke absorption, and telescopic functions within one component achieves versatility without proportionally increasing overall device 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 internal illumination ensures stable and shadow-free illumination at the surgical site, with the telescopic design allowing for adjustable locking and independent power supply lines for enhanced safety and stability.
Implementation Method 1
the circuit on the other side of the aforesaid double-sided PCB is adapted to be used for turning on/off an LED light source (different from SMD LED lamp beads and used for environmental illumination)
Implementation Method 2
a portion of the smoke-absorbing tube is located in the second accommodating chamber, the portion of the smoke-absorbing tube is provided with a slide groove for smoke-absorbing
Data Source
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AI summary
A smoke-absorbing high-frequency surgical knife with illumination function and capable of locking the telescopic length comprising a surgical knife upper shell, a surgical knife main body, a smoke-absorbing tube, a locking mechanism, a light-emitting element, a high-frequency electrode and a hose. The high-frequency electrode is coaxially arranged with the light-emitting element. One end of the high-frequency electrode is located on the outer side of the light-emitting element, and keeps the absolute distance from the light-emitting element unchanged. The other end of the high-frequency electrode is internally connected to the electrode fixing seat through the light-emitting element. The present invention has an internal illumination function, and the SMD LED lamp beads are annularly arranged. When the smoke-absorbing tube stretches and retracts, the high-frequency electrode, the light-emitting element, and the SMD LED lamp beads synchronously stretch and retract along with the electrode. The illuminating component is close to the position where the high-frequency electrode effectively acts, and keeps the absolute distance unchanged, achieving a stable illumination intensity at the acting position of the high-frequency electrode. The illuminating component, namely, the SMD LED lamp beads annularly and uniformly emits light, ensuring the surgical spot is shadow-free. The locking degree of the locking mechanism can be finely adjusted so that the locking function can be achieved at any position.