Method, system, and device for automating transfer of tape to microtome sections
A system and method for automated transfer of a tape segment onto the face of a tissue block to be thin sectioned by microtomy includes applying, to a carrier strip, a plurality of serially-spaced patches of sample tape having an adhesive outer surface, transporting the carrier strip along a path adjacent to and spaced from the exposed sample surface to position one of the patches of sample tape adjacent to and covering the exposed sample surface, adhering the one of the patches of sample tape to the exposed sample surface.
1. An automated tape transport apparatus for sectioning and transporting cut tissue sections from a sample block, the automated tape transport apparatus comprising:
a controller;
a tape having a first surface and a second surface opposite the first surface, the second surface being an adherence surface;
a tape transport unit having a supply reel at an upstream end and a take up reel at a downstream end, wherein the controller is configured to control the tape transport unit to transport the tape from the supply reel for adhering the tape to the sample block for adherence of a cut tissue section from the sample block;
a specimen holding unit for mounting the sample block with an exposed surface of the sample block outwardly facing therefrom;
a tape application unit configured to engage with the tape to apply pressure to the first surface of the tape to press the second surface of the tape into contact with the sample block to adhere the adherence surface of the tape to the exposed surface after transport of the tape to a position adjacent and over the exposed surface;
a specimen sectioning unit operable to section the exposed surface of the sample block for adherence of the cut tissue section to the second surface of the tape to create a sectioned sample; and
a reciprocating actuator and a sensor configured to provide locational information of the tape, the sample block, and the tape application unit relative to each other to the controller, the controller being configured to control the reciprocating actuator based on the locational information to cause the tape application unit to apply pressure on the first surface of the tape in a first position and to cause the tape application unit to be away from the specimen holding unit in a second position.
2. The apparatus of claim 1 , wherein the controller aligns the tape with the sample block so the cut tissue section can be applied to the second surface when the second surface is pressed over the exposed surface of the sample block.
3. The apparatus of claim 1 , wherein the tape application unit includes a roller being configured to roll against the first surface of the tape to press the second surface of the tape on the sample block to eliminate air bubbles.
4. The apparatus of claim 1 , wherein the tape application unit includes a spring-loaded roller to adhere the tape to the exposed surface of the sample block.
5. The apparatus of claim 1 , further comprising a tape guide axially spaced from the tape application unit, wherein the controller is configured to control the tape guide, wherein the position of the tape guide is movable by the controller from an apply position to a remove position, the tape guide being in the apply position during advancement of the tape to align with the specimen holding unit and remaining in the apply position during movement of the tape application unit to the second position by the controller.
6. The apparatus of claim 5 , wherein when the tape guide is in the apply position, an angle formed by a first line between the specimen holding unit and the supply reel and a second line between the specimen holding unit and the tape guide is about 180 degrees, whereby the tape is adjacent to and aligned with the exposed surface of said sample block and when the tape guide is in the remove position, wherein the angle formed by the first line between the specimen holding unit and the supply reel and the second line between the specimen holding unit and the tape guide is at an obtuse angle.
7. The apparatus of claim 1 , wherein the controller comprises:
(a) a processor; and
(b) a non-transitory computer-readable medium comprising instructions for controlling the tape transport unit to dispense the tape so that a portion of the tape is adjacent to and covers the exposed surface of the sample block.
8. The apparatus of claim 1 , further comprising a slide and a slide transfer station for transferring the sectioned sample from the tape to the slide.
9. The apparatus of claim 8 , wherein the slide has an adhesive for adhering the sectioned sample to the slide.
10. The apparatus of claim 1 , wherein the specimen sectioning unit includes a knife-block with a blade handler for holding a changeable knife blade.
11. The apparatus of claim 1 , wherein the specimen holding unit comprises a chuck head and a chuck adapter for holding the sample block.
12. The apparatus of claim 1 , wherein the controller comprises:
(a) a processor; and
(b) a non-transitory computer-readable medium comprising instructions for controlling the reciprocating actuator based on the locational information to cause the tape application unit to apply pressure on the first surface of the tape in the first position and to cause the tape application unit to be away from the specimen holding unit in the second position.