Vibration-Dampened Vitrectomy Probe Design
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Solution Overview
Problem
Vitrectomy procedures face challenges in minimizing vibrations during the removal of vitreous humor, which can cause distractions for surgeons and potentially harm delicate eye structures due to the fibrous nature of the gel.
Innovation Solution
A vitrectomy probe with features such as a soft touch gripping component, stepped channeling for reduced air pressure, and strategically placed seals to minimize friction and vibration, allowing for efficient cutting of vitreous humor with reduced vibrational distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutter reciprocates at high speed to cut vitreous humor effectively, then cutting efficiency is improved, but vibrations are increased causing distraction to the surgeon
Solution Approach 1:
A damping element is introduced as an intermediary component between the cutter and the probe handle. This damping element absorbs and dissipates vibrations generated by the high-speed reciprocating cutter, preventing them from transmitting to the surgeon's hand while maintaining the high cutting efficiency
Solution Approach 2:
The vibration energy generated by the high-speed cutter is converted from a harmful distraction into a useful cutting mechanism. The damping element transforms the harmful vibrations into controlled mechanical energy that enhances the cutting action while minimizing transmission to the surgeon
2Speed
If air pressure is increased to reciprocate the diaphragm faster, then cutting speed is improved, but friction and heat generation are increased
Solution Approach 1:
A pneumatic system with optimized air channels and pressure distribution is used to reciprocate the diaphragm. The system delivers air pressure through multiple channels that distribute force evenly across the diaphragm surface, enabling high reciprocation speed while minimizing localized friction and heat generation
Solution Approach 2:
The diaphragm and air pressure system are designed with dynamic characteristics that allow rapid reciprocation. The diaphragm's flexible material properties and the pneumatic system's responsive pressure control enable high-speed operation with reduced mechanical friction compared to rigid mechanical drive systems
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 probe effectively reduces vibrations during the procedure, enhancing surgeon control and minimizing risk to delicate eye structures while maintaining high cutting efficiency, thereby improving surgical precision and safety.
Implementation Method 1
A first and second channel of air are used to reciprocate the diaphragm at first and second sides thereof
Implementation Method 2
strategically placed seals to minimize friction and vibration
Implementation Method 3
stepped channeling for reduced air pressure
Data Source
AI summary
A vitrectomy probe with combined vibration dampening and attenuating. The probe may include a variety of features to lessen the vibrations felt by a surgeon during a vitrectomy procedure. These may include minimizing the degree of flow restriction through a housing that facilitates cutter reciprocation by way of air pressure. Further, utilizing softer stops at a diaphragm that drives the cutter reciprocation may be of benefit as is strategically lessening compressive forces by seals at an extension tube coupled to the diaphragm where possible. The use of a softer gripping component that is actually held by the surgeon may be of benefit in terms of vibration attenuation.