Medical Instrument Hall Effect Sensor Alignment
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Solution Overview
Problem
Existing surgical cutting instruments used for removing lesions, polyps, and fibroids within the nasal cavity lack enhanced real-time positional information, making it difficult for surgeons to accurately navigate and position the instruments during procedures.
Innovation Solution
The integration of a navigation sensor assembly and a shaft assembly alignment system, which includes a Hall effect sensor and a magnetic base, allows for real-time tracking of the instrument's position and orientation within the nasal cavity, enhancing precision and safety during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgical cutting instruments are used for removing lesions, polyps, and fibroids within the nasal cavity, then tissue removal function is achieved, but real-time positional information is insufficient
Solution Approach 1:
The patent combines a navigation sensor assembly with the surgical cutting instrument to provide real-time positional information. The sensor assembly includes electromagnetic sensors that detect position and orientation relative to reference markers, integrating navigation capabilities directly into the surgical instrument without requiring separate tracking systems.
Solution Approach 2:
The patent introduces reference markers placed on the surgical site and electromagnetic reference frames as intermediaries between the surgical instrument and the navigation system. These markers and frames enable the sensors to accurately determine the instrument's position and orientation relative to anatomical structures.
2Reliability
If navigation sensor assembly is integrated into the instrument, then real-time positional tracking is improved, but device complexity increases
Solution Approach 1:
The navigation sensor assembly is segmented into separate functional components: electromagnetic sensors, reference markers, and a processing system. This segmentation allows the sensors to be independently positioned on the instrument while maintaining modular integration, reducing overall system complexity.
Solution Approach 2:
The navigation sensor assembly serves multiple functions: it tracks the instrument's position, determines orientation relative to anatomical structures, and provides real-time feedback during the surgical procedure. This multi-functionality justifies the added complexity by consolidating several navigation requirements into a single integrated system.
3Measurement precision
If Hall effect sensor and magnetic base are added for alignment, then angular position detection is improved, but manufacturing complexity increases
Solution Approach 1:
The Hall effect sensor and magnetic base alignment system is designed to be self-aligning during instrument assembly. The magnetic field generated by the magnetic base automatically guides the Hall effect sensor into the correct position, eliminating the need for complex manual alignment procedures and reducing manufacturing 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
This solution provides surgeons with precise real-time positional information, enabling more accurate and efficient removal of nasal lesions, polyps, and fibroids, while minimizing the risk of tissue damage and improving patient outcomes.
Implementation Method 1
a Hall effect sensor fixedly secured to the body, the Hall effect sensor being configured to detect a magnitude of the magnetic field and to generate second signals indicative of an angular position of the rotary member relative to the body about the rotational axis
Data Source
AI summary
An apparatus includes a body, a rotary member, a navigation sensor, and an alignment system. The rotary member is sized and configured to fit in an anatomical passageway of a patient; and is configured to rotate relative to the body about a rotational axis. The navigation sensor is configured to generate first signals indicative of a position of the body in three-dimensional space. The alignment system includes a magnet and a Hall effect sensor. The magnet is fixedly secured to the rotary member; and is configured to generate a magnetic field. The Hall effect sensor is fixedly secured to the body and is configured to detect a magnitude of the magnetic field and to generate second signals indicative of an angular position of the rotary member relative to the body about the rotational axis.