Vitrectomy Probe Adjustable Cutter Port Size
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Solution Overview
Problem
Vitrectomy probes have a fixed port size, which limits their ability to efficiently remove ocular tissues during vitreoretinal surgery, as the port size cannot be adjusted to optimize cutting efficiency and tissue flowability.
Innovation Solution
A control system and vitrectomy probe design that allows for user-selectable, variable port sizes, achieved through pneumatic, mechanical, electrical, or manual adjustments, enabling the port size to be altered to maximize cutting efficiency and tissue flowability during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the port size is fixed, then the device complexity is reduced, but the adaptability to different tissue types and surgical conditions deteriorates
Solution Approach 1:
The port size is made dynamically adjustable through a mechanism that allows the port opening to change size during operation. The cutter assembly can be positioned at different locations along the probe shaft, and the port size can be modified by adjusting the relative positions of the cutter components, enabling adaptation to different tissue types and surgical conditions without changing the overall device structure.
Solution Approach 2:
The port size parameter is made variable rather than fixed. By changing the port size parameter through adjustable mechanisms, the device can optimize its performance for different surgical scenarios. The cutter assembly's position and the port opening size can be adjusted as needed, allowing the same device to handle various tissue types effectively.
2Productivity
If the port size is adjustable, then the productivity of tissue removal is improved, but the device complexity increases
Solution Approach 1:
The port size is made dynamically adjustable through a mechanism that allows the port opening to change size during operation. The cutter assembly can be positioned at different locations along the probe shaft, and the port size can be modified by adjusting the relative positions of the cutter components, enabling adaptation to different tissue types and surgical conditions without changing the overall device structure.
Solution Approach 2:
The port size parameter is made variable rather than fixed. By changing the port size parameter through adjustable mechanisms, the device can optimize its performance for different surgical scenarios. The cutter assembly's position and the port opening size can be adjusted as needed, allowing the same device to handle various tissue types effectively.
3Manufacturing precision
If the port size is optimized for specific tissue types, then the manufacturing precision for that specific application is improved, but the adaptability to handle multiple tissue types deteriorates
Solution Approach 1:
The probe is designed with universal adaptability to handle multiple tissue types through adjustable port sizes and repositionable cutter assemblies. The same basic probe structure can be configured for different surgical scenarios by adjusting the port opening size and cutter position, eliminating the need for multiple specialized probes for different tissue types.
Solution Approach 2:
The port size is made dynamically adjustable through a mechanism that allows the port opening to change size during operation. The cutter assembly can be positioned at different locations along the probe shaft, and the port size can be modified by adjusting the relative positions of the cutter components, enabling adaptation to different tissue types and surgical conditions without changing the overall device structure.
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 ability to adjust port sizes enhances the efficiency of tissue removal and flowability, allowing for more precise and effective vitreoretinal surgery by optimizing the cutting process and reducing tissue dissection challenges.
Implementation Method 1
a first inlet port operable to conduct pneumatic pressure to an oscillator, a second inlet port operable to conduct pneumatic pressure to the oscillator
Implementation Method 2
a controller operable to oscillate the output valve between a first position in which the first conduit is in communication with the first output port and the second conduit is in communication with the second outlet port, and a second position in which the first conduit is in communication with the second output port and the first output port is in communication with the second conduit
Implementation Method 3
move the venting control valve from a first position in which the second conduit communicates at a first amount with the second outlet and a second position in which the second conduit communicates a second amount with the second outlet
Data Source
AI summary
Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are described for adjusting the size of the cutting port. Further, the disclosure provides examples for adjusting the size of the cutter port while the vitrectomy probe is in operation.