Surgical Microscope 3D Biopsy Point Recall
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Solution Overview
Problem
In neurosurgical interventions, distinguishing tumor tissue from healthy tissue is challenging, leading to delays in precise repositioning of surgical microscopes for further biopsies based on pathological examination results, as existing systems lack precise registration and recall of biopsy points in three-dimensional space.
Innovation Solution
The surgical microscopy system incorporates a focus sensor to register the focal point and position sensors to determine the surgical microscope's alignment and position, allowing for precise storage and recall of biopsy points in a virtual three-dimensional instrument coordinate system, enabling accurate repositioning without altering the surgical field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tissue samples are removed for pathological examination, then tissue classification accuracy is improved, but time loss occurs while waiting for examination results
Solution Approach 1:
The system performs preliminary marking of biopsy points during the initial examination. The focal point position is registered and stored in advance, creating a reference that enables rapid return to the exact same location after pathological examination results are available, eliminating the need to wait for results before preparing for the next biopsy
2Adaptability or versatility
If the surgical microscope is manually repositioned after biopsy, then flexibility is maintained, but positioning precision is lost
Solution Approach 1:
The system replaces manual mechanical repositioning with automated position recall. The registered focal point coordinates are used to automatically reposition the surgical microscope to the exact biopsy location, ensuring millimeter-level precision while maintaining the ability to adapt to different surgical scenarios through software control
3Reliability
If multiple biopsy points are examined, then diagnostic completeness is improved, but time loss increases due to repeated repositioning
Solution Approach 1:
Each biopsy point is pre-registered and stored in the system's memory with its precise spatial coordinates. When multiple biopsies are needed, the system efficiently recalls stored positions and automatically repositions the microscope, eliminating manual searching and significantly reducing the time between sequential biopsies while maintaining complete diagnostic coverage
Solution Approach 2:
The system creates a virtual map of biopsy points and their positions. This digital copy of the surgical field geometry allows rapid navigation between multiple biopsy sites without physically searching, enabling efficient examination of multiple points while maintaining complete diagnostic information
Data Source
AI summary
A surgical microscopy system includes a surgical microscope with a control device and with focusable imaging optics for observing an operation field. The microscope is arranged on a stand with a base unit. The stand is embodied with linear drives and/or rotary joints in such a way that the surgical microscope is displaceable along three direction axes and rotatable about three axes of rotation relative to the base unit. For renewed focusing to a desired point, position and/or rotational sensors are assigned to each of the drives and/or joints for each of the direction axes and position and/or rotary angle sensors are assigned to each of the drives and/or joints for each of the axes of rotation and a focusing sensor for a focal point is assigned to the focusing imaging optics. A position and alignment of the microscope relative to the base unit and the focal point are storable.