Aspiration Handpiece Flow Control Mechanism
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Solution Overview
Problem
Current surgical aspiration systems require surgeons to communicate changes in aspiration flow rate to technicians, leading to delays in adjusting vacuum pressure, which can be detrimental during procedures requiring rapid changes, especially in microsurgical contexts.
Innovation Solution
A flow control system integrated into the aspiration handpiece, allowing surgeons to adjust aspiration flow rate by rotating a flow control mechanism, which alters the aperture alignment to control vacuum pressure and flow rate directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the aspiration flow rate is adjusted by communicating with a surgical technician who operates the surgical machine, then the surgical machine can provide precise vacuum pressure control, but the response time for adjusting aspiration flow rate is delayed
Solution Approach 1:
The patent extracts the flow control mechanism from the surgical machine and integrates it directly into the aspiration handpiece. This allows the surgeon to control the aspiration flow rate directly at the point of use, eliminating the communication delay with the surgical technician while maintaining vacuum pressure control through the integrated mechanism that adjusts the aperture size.
Solution Approach 2:
The patent introduces a flow control mechanism with an adjustable aperture as an intermediary device between the surgeon's intent and the vacuum source. This intermediary allows direct local control of flow rate by the surgeon through aperture adjustment, while the vacuum source continues to operate independently, resolving the time delay without sacrificing control precision.
2Speed
If the surgeon directly controls the aspiration flow rate at the handpiece, then the response time for adjusting flow rate is improved, but the device complexity increases
Solution Approach 1:
The flow control mechanism is integrated into the existing aspiration handpiece structure, allowing the handpiece to perform both aspiration and flow control functions. The mechanism uses the existing vacuum source and adds only the necessary aperture control components, achieving multi-functionality without proportionally increasing overall complexity.
Solution Approach 2:
The flow control mechanism is nested within the aspiration handpiece structure. The aperture control components are positioned within the existing handpiece housing, and the control elements are integrated into the grip area, allowing the surgeon to access the control without adding external protruding components that would increase apparent 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
Enables immediate and precise adjustment of aspiration flow rate by the surgeon, reducing the risk of unintended harm during procedures and improving operational efficiency by eliminating the need for intermediary communication and adjustments.
Implementation Method 1
The surgical machine is configured to provide a vacuum pressure through the aspiration tube and the aspiration handpiece
Implementation Method 2
a rotation of the flow control mechanism about the gasket may be configured to dispose a portion of the control aperture over a portion of the gasket aperture
Data Source
AI summary
A flow control system may include an inner nosecone having an inner nosecone distal end and an inner nosecone proximal end, an outer nosecone having an outer nosecone distal end and an outer nosecone proximal end, an aperture of the outer nosecone, a gasket having a gasket distal end and a gasket proximal end, a gasket aperture of the gasket, a gasket seal of the gasket, a flow control mechanism having a flow control mechanism distal end and a flow control mechanism proximal end, and a control aperture of the flow control mechanism. A rotation of the flow control mechanism about the gasket may be configured to decrease an aspiration flow rate. A rotation of the flow control mechanism about the gasket may be configured to increase an aspiration flow rate.