Microtome having a piezoelectric linear actuator

一种压电致动器、切片机的技术，应用在仪器、科学仪器、取样等方向，能够解决小步进、高间隔和重量要求、不允许样品架切割单元快速运动等问题，达到高速移动、高分辨率的效果

Active Publication Date: 2014-02-12
LEICA BIOSYST NUSSLOCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of the known microtome is the limited resolution, i.e. the minimum adjustable thickness of the slice is limited by the pitch of the screw-nut system and the minimum step resolution of the stepper motor
To be able to achieve very small steps to obtain very thin sections necessitated (among other things) very complex designs with expensive screw-nut assemblies
Such designs also require costly complex bearing arrangements and involve high spacing and weight requirements
Furthermore, such expensive designs of high-resolution screw-nut assemblies have the disadvantage that they do not allow rapid movement of the sample holder relative to the cutting unit, so that feeding in the so-called coarse-feed mode of the microtome during the sample change can only very slowly

Method used

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  • Microtome having a piezoelectric linear actuator
  • Microtome having a piezoelectric linear actuator
  • Microtome having a piezoelectric linear actuator

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Embodiment Construction

[0035] figure 1 with figure 2 Each is a schematic perspective view depicting the microtome 10 in a very simplified form, showing only the components necessary for the invention. For example, the case has been omitted to see the internals.

[0036] Microtome 10 includes a sample holder 12 that includes a chuck 14 for holding a sample to be sectioned. The microtome 10 also has a cutting unit 16 comprising a blade holder 18 and a blade 20 clamped in the blade holder 18 for cutting the sample.

[0037] Furthermore, the microtome 10 includes a hand wheel 32 with a handle 34 . The rotational movement of the handwheel 32 is detected by a rotary encoder (not shown). The control unit (also not shown) controls the driving unit 22 according to the detected rotational movement of the hand wheel 32, so that the sample holder 12 moves back and forth relative to the stationary cutting unit 16 in the direction indicated by the double arrow P1, thereby passing through the blade 20 The co...

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PUM

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Abstract

The present invention relates to a microtome (10) for cutting thin sections, including a sample holder (12), a cutting unit (16), and a drive unit (16) for producing a feed movement between the sample holder (12) and the cutting unit (16) for setting the thickness of the sample sections. The drive unit (22) includes a piezoelectric linear actuator (50) for producing the feed movement.

Description

technical field [0001] The invention relates to a microtome for cutting slices, comprising a sample rack for receiving samples to be sliced ​​and a cutting unit for cutting the samples. A drive unit is also provided which produces the feed movement between the sample holder and the cutting unit for setting the thickness of the sheet. Background technique [0002] To perform a slicing operation, a sample (eg, a tissue sample) is clamped on a sample holder driven by a drive unit to reciprocate relative to the cutting unit to cut the sample. After such a reciprocating movement (ie after cutting a slice from the sample), the distance between the sample holder and the cutting unit has to be reduced by the thickness of the next slice. This generally horizontal movement is called a "feed move". Feed and reciprocation are orthogonal to each other, with reciprocation being vertical and feed being horizontal. [0003] The feed movement of the known microtome is realized purel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/06
CPCG01N1/06G01N2001/065Y10T83/162Y10T83/6515Y10T83/6536
Inventor R·沃尔特
Owner LEICA BIOSYST NUSSLOCH
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