Devices, systems, and methods for extracting a material from a material sample

Patent metadata

Field	Value
Publication number	US-10866170-B2
Application number	US-201113981541-A
Country	US
Kind code	B2
Filing date	Nov 16, 2011
Priority date	Jan 24, 2011
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

Devices, systems, and associated methods for selectively extracting a material from a sample are provided. In one aspect, for example, a method for selectively extracting biological material from a biological sample can include identifying a region of biological material to be extracted from a biological sample disposed on a substantially planar surface, applying an extraction tool to the region of biological material to disrupt biological material from the biological sample, and dispensing a liquid at the region of biological material. The method can also include aspirating the liquid and the disrupted biological material from the biological sample.

First claim

What is claimed is:

1. An extraction device for selectively extracting biological material from a biological sample, comprising:
a cutting tip configured to be rotatably driven about a rotating axis by a motor, the cutting tip being configured to disrupt material from a region of a sample, the cutting tip comprising a liquid aspiration port centrally located within the cutting tip and exposed to the region of the sample;
a liquid dispensing port located proximal to the cutting tip, the liquid dispensing port being fluidly connected along a first fluidic pathway to a liquid dispensing reservoir and the liquid dispensing port being configured to dispense liquid from the liquid dispensing reservoir to an interface between the sample and the cutting tip,
wherein the cutting tip comprises a second fluidic pathway that is fluidly connected to the liquid aspiration port, the second fluidic pathway having an axis coaxial with the rotating axis of the cutting tip; and
a pump fluidly connected with the liquid aspiration port via the second fluidic pathway and being configured to aspirate liquid and disrupted biological material from a region proximal to the cutting tip via the liquid aspiration port.

2. The device of claim 1 , wherein the liquid dispensing port and the liquid aspiration port are configured to function simultaneously.

3. The device of claim 1 , wherein the cutting tip is sized to disrupt an area of biological material of from about 10 μm in size to about 1 mm in size.

4. The device of claim 1 , wherein the cutting tip is sized to disrupt an area of biological material of from about 100 μm in size to about 250 μm in size.

5. The device of claim 1 , wherein the pump comprises a plunger.

6. The device of claim 1 , wherein the liquid dispensing port is configured to rotate with the cutting tip.

7. A system for selectively extracting biological material from a biological sample, comprising:
the extraction device of claim 1 positioned to operationally face a support substrate and to engage a biological sample disposed on the support substrate;
a motor operationally coupled to the extraction device and operable to rotate the cutting tip;
a fluidics system coupled to the extraction device and operable to deliver fluid to the liquid dispensing port and withdraw fluid from the liquid aspiration port; and
a positional movement system coupled to the extraction device and operable to move either the cutting tip of the extraction device relative to the support substrate or the support substrate relative to the cutting tip.

8. The system of claim 7 , further comprising a visualization system positioned to provide a visual display of the biological sample placed on the support substrate, wherein the visualization system includes a member selected from the group consisting of digital imagers, optical imagers, microscopes, inverted microscopes, and combinations thereof.

9. The system of claim 8 , wherein the support substrate is transparent.

10. The system of claim 9 , wherein the visualization system is an inverted microscope positioned to provide the visual display from a side of the support substrate opposite the cutting tip.

11. The system of claim 8 , wherein the visualization system is configured to provide a real time visual display of the cutting tip during an extraction procedure.

12. The system of claim 7 , further comprising a manual manipulation system functionally coupled to the positional movement system and configured to allow a user to move the cutting tip and/or the support substrate relative to one another.

13. The system of claim 7 , further comprising an automatic manipulation system functionally coupled to the positional movement system and configured to automatically move the cutting tip and/or the support substrate relative to one another.

14. The system of claim 13 , further comprising a processing system functionally coupled to the automatic manipulation system, the processing system configured to:
identify and locate a predetermined region of biological material to be extracted from a biological sample; and
move the cutting tip and/or support substrate relative to one another to extract the biological material via the automatic manipulation system.

Assignees

• Adey Nils B
• Geiersbach Katherine B
• Herrmann Mark
• Parry Robert J
• Roche Molecular Systems Inc

Inventors

• Adey Nils B
• Geiersbach Katherine B
• Herrmann Mark
• Parry Robert J

Classifications

• G01N1/10

  in the liquid or fluent state {(burettes, pipettes B01L3/02; sampling of ground water E02D1/06; metering by volume of fluids or fluent solid material G01F11/00, G01F13/00)} · CPC title

• G01N33/48 Primary

  Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02) · CPC title

• G01N1/04

  in the solid state, e.g. by cutting · CPC title

• G01N2001/383

  collecting and diluting in a flow of liquid · CPC title

• G01N2001/2873

  Cutting or cleaving · CPC title