Multi-Linkage Tracker Assembly for Medical Imaging Probes
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Solution Overview
Problem
Medical imaging devices, such as ultrasound probes, face challenges in maintaining precise positioning and alignment during 3D image generation due to manual manipulation, which can result in movement between images, impeding accurate diagnosis and treatment procedures. Additionally, the lack of standardized designs among different manufacturers requires specialized positioning assemblies for each probe configuration.
Innovation Solution
A multi-linkage tracker assembly with hinged connections and encoders allows for precise positioning and rotation of medical imaging devices, providing a common interface for differently configured ultrasound probes. This assembly includes a base element affixed to a frame of reference, with linkages that enable three-dimensional movement and rotation, and a collar system for secure alignment with the probe, enabling accurate registration of images and minimizing movement between acquisition and treatment procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual manipulation of the imaging device is used, then ease of operation is improved, but positioning precision deteriorates due to movement between images
Solution Approach 1:
A positioning assembly acts as an intermediary between the operator and the imaging device. The assembly includes a holder that secures the imaging device and a positioning mechanism with degrees of freedom that allows controlled movement. This mediator enables precise positioning while maintaining ease of operation through mechanical control rather than direct manual manipulation.
Solution Approach 2:
The positioning assembly is designed with multiple degrees of freedom, allowing it to be dynamically adjusted to various positions and orientations. The assembly can be moved along x, y, z axes and rotated about multiple axes, providing dynamic positioning capability while maintaining stability during imaging to prevent movement between images.
2Measurement precision
If specialized positioning assemblies are used for each probe configuration, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The positioning assembly is designed with universal compatibility to accommodate different imaging device configurations. The holder can be adjusted to accommodate various probe sizes, shapes, and mounting requirements. This universal design allows a single positioning assembly to work with multiple probe types, eliminating the need for specialized assemblies for each configuration while maintaining positioning precision.
3Adaptability or versatility
If the imaging device is moved between image acquisitions, then versatility is improved, but registration accuracy deteriorates
Solution Approach 1:
The positioning assembly incorporates feedback mechanisms through encoders or sensors that track the position and orientation of the imaging device. This feedback information is used to accurately register images acquired at different positions. The system records the precise location and orientation of the device during movement, enabling accurate 3D reconstruction and registration despite the device being moved between acquisitions.
Data Source
AI summary
Provided herein are devices and methods for mounting variously configured medical imaging probes to a tracker assembly for imaging applications. In one aspect, a tracker assembly provides multiple degrees of freedom for positioning a probe relative to a patient and/or maintaining a probe in a desired location for imaging purposes. The tracker generates location information that may be utilized as frame of reference information for acquired images. In another aspect a holding device allows for interfacing/holding differently configured probes in a common orientation to a predetermined frame of reference.