Pin Alignment Component for Microtome Block Orientation
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Solution Overview
Problem
Conventional microtome alignment methods are inefficient and costly, requiring manual trial-and-error for precise alignment of block specimens in both rotary and cryostat microtomes, leading to sample waste and inconsistency across different microtomes.
Innovation Solution
A pin alignment component with adjustable pins and indicia for precise alignment, allowing for automatic or semi-automatic adjustment of block specimens in microtomes to ensure consistent three-dimensional orientation, compatible with various microtome types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual trial-and-error alignment is used, then alignment precision can be achieved, but time consumption and labor effort increase significantly
Solution Approach 1:
The alignment component is pre-configured with pins and indicia that establish the correct alignment position before the block specimen is placed. The user simply needs to position the block so that the pins contact the block surface at the correct locations, eliminating the need for time-consuming trial-and-error adjustment.
Solution Approach 2:
The alignment component allows the block specimen to self-align through its own geometry. When the pins contact the block surface, the physical constraints automatically position the block in the correct orientation relative to the knife, without requiring manual adjustment of the chuck or microtome components.
2Measurement precision
If manual alignment adjustment is performed, then alignment accuracy can be improved, but sample loss increases due to repeated trial-and-error slicing
Solution Approach 1:
The correct alignment position is established in advance by the pre-configured pins and indicia on the alignment component. This preliminary setup ensures that when the block specimen is positioned, it is already in the correct alignment, eliminating the need for repeated slicing attempts that would waste sample material.
3Adaptability or versatility
If chuck adjustment in all three planes is allowed, then flexibility in positioning is improved, but consistency across multiple blocks and microtomes deteriorates
Solution Approach 1:
The alignment component provides localized alignment guidance through pins positioned at specific locations on the block surface. Each pin corresponds to a specific alignment requirement, providing precise local control while maintaining overall consistency across all blocks processed on the microtome.
Solution Approach 2:
The indicia on the alignment component provide visual feedback to the user about the alignment status. When the pins contact the block surface at the correct positions, the indicia indicate proper alignment, allowing the user to verify and maintain consistent cutting planes across multiple blocks.
4Reliability
If conventional alignment methods are used, then microtome knife sharpness is maintained through proper alignment, but the complexity and difficulty of the alignment process increases
Solution Approach 1:
The alignment function is extracted from the complex chuck adjustment mechanism and implemented as a separate, simplified alignment component with pins and indicia. This component can be attached to any microtome and provides straightforward alignment guidance without requiring complex manual adjustment procedures.
Data Source
AI summary
Systems and methods described herein for aligning a block in a microtome attempt to save time, money, and the sample by aligning a block in any rotary or cryostat microtome. One such device for aligning a block in a microtome has a knife holder component removably attached to a knife holder of the microtome and a pin alignment component extending vertically from the knife holder component in a direction substantially parallel to the block. The pin alignment component has a plurality of front pins extending from a front surface of the pin alignment component configured to slide in response to an angle of the block and a plurality of rear pins extending from a rear surface of the pin alignment component and coupled to the front pins. The rear pins are configured to indicate the extension of the front pins from the pin alignment component.