Articulating Microsurgical Instrument With Integrated Doppler Detection
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Solution Overview
Problem
Conventional medical instruments face challenges in efficiently manipulating articulating tips and integrating Doppler detection for precise surgical procedures, particularly in neurosurgery, ENT, and cardiovascular surgeries, with existing systems often requiring external ultrasound devices and complex mechanisms that obstruct the surgeon's view.
Innovation Solution
A microsurgical instrument with a manipulatable elongate member featuring Doppler detection, articulation control via control wires, a bayonet-style handle, and internal guides, allowing for clear line of sight and precise articulation of the distal tip, including features like a roller wheel and spring tensioners for enhanced control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external ultrasound devices are used for Doppler detection, then Doppler detection capability is achieved, but device complexity and obstruction of surgeon's view increase
Solution Approach 1:
The patent combines the Doppler detection ultrasound device with the microsurgical instrument shaft, integrating two previously separate systems into one unified device. This merging eliminates the need for separate external ultrasound equipment while maintaining Doppler detection functionality, thereby reducing overall device complexity and improving surgical workflow.
Solution Approach 2:
The ultrasound Doppler device is nested within the lumen of the microsurgical instrument shaft. This nesting arrangement allows the Doppler detection components to be housed inside the existing instrument structure without significantly increasing external dimensions or complexity, while still providing integrated functionality.
2Manufacturing precision
If complex mechanisms are used for articulation control, then articulation precision is improved, but obstruction of surgeon's view and device complexity increase
Solution Approach 1:
The patent extracts the articulation control mechanism from the surgeon's direct field of view by positioning the control wires and articulation components within the instrument shaft and handle assembly. This allows precise articulation control to be achieved without the complex external mechanisms that would obstruct the surgeon's view of the surgical site.
Solution Approach 2:
The patent uses control wires as intermediaries to transmit articulation commands from the handle to the distal tip. These wires act as flexible mediators that can transmit mechanical forces through the instrument shaft without requiring complex external linkages or mechanisms that would obstruct the surgical view.
3Ease of operation
If the handle longitudinal axes are offset, then ease of manipulation is improved, but device complexity increases
Solution Approach 1:
The patent employs asymmetric handle design with offset longitudinal axes between the proximal and distal handle portions. This asymmetry creates a more ergonomic and intuitive control geometry that improves ease of manipulation, allowing the surgeon to naturally control the articulating tip through handle movements that mimic natural hand motions.
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 precise manipulation of surgical tools and Doppler detection with a clear line of sight, facilitating efficient surgical procedures by minimizing obstruction and enhancing the surgeon's ability to reach difficult anatomical regions.
Implementation Method 1
Some conventional medical instruments utilize a flexible needle along with an ultrasound device external to the patient to measure spatial location of echos that contain a Doppler shift
Data Source
AI summary
An apparatus and method for an articulating microsurgical instrument is disclosed herein. The articulating microsurgical instrument may be configured to be operable with a Doppler probe, bone grasper, soft tissue grasper/dissector, scissors, flexible forceps, or a suction/irrigation line configured to provide tools within a surgical location that can be adjusted to a desired angle of operation. A tip assembly may comprise an articulating portion at a distal tip and the articulating portion may be configured to deflect upon actuation of an articulation control. The articulation control may be a trigger assembly or a roller wheel. A bayonet-style handle may include a set of posts configured to interact with the one or more control wires during actuation of the articulation control. One or more control wires may be housed in a lumen and actuated using a articulation control of a handle assembly.