WO2002057746A2 - Specimen slide, microdissection device comprising a specimen slide and a microdissection method - Google Patents
Specimen slide, microdissection device comprising a specimen slide and a microdissection method Download PDFInfo
- Publication number
- WO2002057746A2 WO2002057746A2 PCT/DE2002/000056 DE0200056W WO02057746A2 WO 2002057746 A2 WO2002057746 A2 WO 2002057746A2 DE 0200056 W DE0200056 W DE 0200056W WO 02057746 A2 WO02057746 A2 WO 02057746A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slide
- thickness
- total area
- microdissection
- interest
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/2813—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N2001/045—Laser ablation; Microwave vaporisation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
- G01N2001/2886—Laser cutting, e.g. tissue catapult
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00029—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor provided with flat sample substrates, e.g. slides
- G01N2035/00099—Characterised by type of test elements
- G01N2035/00138—Slides
Definitions
- the invention relates to a slide for microscopic specimens.
- the invention relates to a microdissection device for separating a portion of a preparation of interest with a laser with a slide holder for slides, the slide defining a total area and having a first thickness.
- the invention further relates to a method for microdissection of a portion of a microscopic preparation of interest.
- microscopic specimens are applied to a slide, which is usually made of glass, in order to subsequently insert it into the beam path of a microscope.
- Most microscopes have a slide holder on a microscope stage in which the slide can be inserted and attached.
- laser microdissection refers to a method with which a small fraction is separated from a generally flat preparation (for example cells or a tissue section) with a focused laser beam. The separated part is then available for further biological or medical (e.g. histological) examinations.
- US 5,998,129 describes such a method and an apparatus for laser microdissection.
- the sample is placed on a solid, flat slide, which can be a laboratory slide.
- the described procedure works in two steps.
- a sample area of interest is created with a laser beam selected cell cluster or a histological section is cut out with a laser beam.
- the cutting line of the laser beam describes a closed curve around the sample area of interest.
- an additional laser shot is aimed at the sample area of interest and the sample area of interest is thereby thrown in the direction of the laser beam into a collecting vessel.
- the air gap often remaining in some places between the film layer and the glass substrate also leads to fluctuations in distance and thus to a deterioration in the imaging quality.
- the additional film-air and glass-air transitions cause disturbing reflections, both when observing the specimen and when cutting.
- the object of the invention is to provide a microscope slide which avoids the problems shown.
- the object is achieved by a specimen slide, which is characterized in that the specimen slide has a second thickness over a part of its total area, which is substantially smaller than the first thickness of the slide.
- Another object of the invention is to provide a microdissection device for separating a portion of a preparation of interest using a laser with a slide holder for a slide, the slide defining an overall area and having a first thickness which solves the problems described.
- the object is achieved by a microdissection device, which is characterized in that the specimen slide has a second thickness over a part of its total area, which is substantially smaller than the first thickness of the specimen slide.
- An additional object of the invention is to provide a method for microdissection of a portion of a microscopic preparation of interest which avoids the problems shown.
- the objective task is solved by a procedure, which is characterized by the following steps:
- the invention has the advantage that a portion of the preparation that is of interest and can be cut off can be cut out together with the part of the slide bearing this portion, with no further elements being in the immediate vicinity of the cut-out part of the slide or the separated part of the preparation that they could cling to.
- the focal length of the separating laser beam which is often referred to as depth of field in view of the imaging of the laser focus in the specimen, is limited.
- the focus length of the separating laser beam is usually a few ⁇ m for common lenses or enlargements.
- the slide has a second thickness, at least in the region of interest to be separated, which is not significantly larger than the focal length of the laser beam to be separated.
- the second thickness is preferably less than 10 ⁇ m.
- the specimen slide preferably consists of a frame defining an inner region and a thin film spanning the inner region, the inner region at least largely making up the part of the total area which has the second thickness.
- the frame can be made of plastic or metal, while the film is made of, for example, polyethylene naphthalate (PEN).
- PEN polyethylene naphthalate
- the frame can also have a clamping device that holds the film. The clamping device is preferably designed such that the film is automatically stretched when clamped. In a special embodiment, the film is glued flat to the frame.
- the specimen slide is designed in one piece. It is particularly advantageous if the part having the second thickness preferably absorbs UV light of a specific wavelength or a specific wavelength range, the wavelength or the wavelength range is the wavelength of the separating light beam.
- the first thickness of the slide is preferably in the range from 0.1 to 3 mm and can therefore be used with slide receptacles provided for standard slides.
- the total area of the slide according to the invention is preferably in the range from 10 mm 2 to 50 cm 2 and in a very particularly preferred embodiment, the external dimensions correspond to those of a standard slide, for example 25 mm ⁇ 75 mm.
- the part having the second thickness essentially carries the microscopic preparation, this part being able to be chosen small at high magnifications in order to avoid or at least reduce annoying sagging or vibrating of this part. In the case of small enlargements, the part having the second thickness can be chosen larger, since at smaller enlargements the aberration which is due to sagging is not particularly important.
- a microdissection device contains a slide whose part of the total area which has the second thickness is largely surrounded by the part of the total area which has the first thickness.
- This can consist of a frame defining an inner region and a thin film spanning the inner region, the inner region at least largely making up the part of the total area which has the second thickness.
- One embodiment of the microdissection device has a fixed laser beam and a control unit which moves a movable xy table relative to the fixed laser beam when cutting a specimen. This places very high demands on the positioning accuracy of the xy table in order to produce an exact cutting line.
- the xy table is preferably moved by a motor.
- the microdissection device controls the control unit a deflection device which, when cutting, the laser beam relative to one fixed sample moves.
- the xy table with the slide and the specimen lying on it are not moved when cutting.
- the cutting line is created exclusively by deflecting the laser beam over the specimen.
- An embodiment of the microdissection device is particularly advantageous in which the laser is assigned a control unit which controls the operating parameters of the laser. These operating parameters are, for example, the light output of the laser beam, the degree of illumination of the lens pupil, which is responsible for the focus length and the focus diameter and thus for the cutting width and cutting depth depending on the selected lens.
- an autofocus device can be provided which ensures safe focusing for a clean cut even with samples of different thicknesses.
- the microdissection device is assigned a computer which is used to control the deflection device and the control unit. Automation is therefore possible.
- means for selecting the cutting line or means for selecting the cutting line by a user are provided.
- the user can select the correct portion of interest before cutting and at the same time protect important parts of the sample from damage. For example, by the user being able to place the cutting line on non-critical cell structures of the preparation, critical, interesting cell structures within the portion of interest are protected during cutting.
- the slide is arranged in the microdissection device in such a way that the separated portion of interest falls down unhindered.
- a device for collecting the separated portion of interest is provided.
- a very special advantage of the invention is that the preparation can be applied both on the top of the slide and on the bottom. In order to achieve a good image quality, it is cheap that Apply the preparation to the side facing the microscope objective so that the preparation is not viewed through the slide.
- the portion of the preparation of interest is separated off together with the fraction of the portion of the specimen slide which has the second thickness and carries the portion of interest.
- the specimen slide preferably consists of a frame defining an inner region and a thin film spanning the inner region, the inner region at least largely making up the part of the total area which has the second thickness.
- the method can be supplemented by the further step of collecting the portion of interest with a suitable sample vessel.
- Fig. 3 a slide according to the invention
- Fig. 4 a one-piece slide according to the invention
- FIG. 7 a microdissection device according to the invention and FIG. 8: a flowchart of the method according to the invention
- Fig. 1 shows schematically a slide 1 according to the invention with a preparation 3 in cross section.
- the slide 1 consists of this Embodiment of a solid frame 5 is glued to the one, a second thickness 7, namely 5 microns, having film 9 made of polyethylene naphthalate (PEN).
- the adhesive 11 is applied flatly on the frame 5 and keeps the film taut in such a way that no folds occur and the film does not sag or only sags insignificantly.
- the frame, the adhesive and the film define the first thickness 13; it is 1 mm.
- the sample is placed on the top of the slide.
- FIG. 2 schematically shows a slide 15 according to the invention, produced in one piece, with a preparation 3 in cross section.
- the thin inner region essentially carries the preparation 3.
- FIG. 3 illustrates the slide 1 according to the invention shown in FIG. 1, but in this embodiment the preparation is applied to the underside of the film 9.
- the preparation adheres to the film 9 through adhesive forces.
- the preparation is better protected against external influences.
- Fig. 4 shows the one-piece slide according to the invention shown in Fig. 2.
- the preparation is applied to the underside of the film 9 and adheres to the specimen slide 19 by adhesive forces. In this embodiment, too, the preparation is better protected against external influences.
- FIG. 5 shows the frame 5 of a slide 1 according to the invention.
- This frame is made of aluminum and has external dimensions of a standard slide of 25 mm ⁇ 75 mm ⁇ 1 mm. To avoid unwanted stray light, the frame 5 is black anodized.
- the inner region 21 can be covered with a film. Similar to double-sided adhesive tape, the film can be applied to the frame with a backing layer, after which the backing layer is carefully peeled off.
- FIG. 6 shows a slide 1 according to the invention in three dimensions View.
- the film 9 is glued to the frame 5 carefully stretched.
- the microdissection device 23 comprises a microscope 25 with a movable xy table 27 which has a slide holder 29. On the upper side of the slide 1 there is a preparation 3 to be cut.
- An illumination system 31 and a condenser 33, which illuminates the sample 3, are arranged under the xy table 27.
- the xy table 27 is not moved horizontally during the cutting process, that is to say in the x direction and in the y direction.
- a collecting container 35 is arranged below the preparation 3 for collecting the cut-out sample area of interest.
- a laser beam 39 emanates from a laser 37, in this example a UV laser, and is coupled into a deflection device 41.
- the laser beam 39 passes through the deflection device 41 and, via an optical system 43 and a beam splitter 45, arrives at an objective 47, which focuses the laser beam 39 on the sample 3.
- the beam splitter 45 is designed as a dichromatic beam splitter which allows the light 49 emanating from the specimen 3 (shown in dashed lines) to pass, so that it reaches the video camera 51 largely unhindered.
- the setting of the deflection device 41 and thus the guiding of the laser beam 39 through the specimen 3 takes place with a motor 53 assigned to the deflection device 41, which is controlled by a control unit 55 and via a computer 57.
- the motor 53 is connected to the control unit 55, which supplies the control signals for driving the motor 53.
- the control unit 55 is connected to the computer 57, to which a monitor 59 is connected.
- the image of the specimen recorded by the camera 51 is displayed on the monitor 59.
- a desired target cutting line can be defined on the monitor 18 in the camera image by means of a mouse (not shown) or any other cursor control device.
- the Control unit 55 also regulates the light output of laser beam 39.
- the deflection device 41 deflects the laser beam in such a way that it follows the preselected cutting line.
- the specimen is in the focal plane of the objective 47.
- the geometry of the beam path is selected such that the laser beam 41 is tilted in the pupil of the objective 47 during the deflection process.
- the focusing takes place by manually moving the xy table 27 in the direction of the optical axis 61 with simultaneous visual control of the camera image by a user.
- 8 shows a flow chart of the method according to the invention.
- the application 63 of a preparation is carried out on a slide 1.
- the specimen slide 1 which defines a total area and has a first thickness 13 and, over part of its total area, has a second thickness 7, which is significantly smaller than the first thickness 13 of the specimen slide 1, the specimen 3 essentially carries with that second thickness 7 having part.
- the portion of interest is then selected 65 in a microscopic overview image.
- the overview image is preferably recorded with a microscope 25 equipped with a video camera 51 and displayed on a monitor 59.
- An area of interest can be marked in the overview screen.
- the selected portion of interest is separated 67. This is preferably done with a focused laser beam 39 which is guided over the preparation 3 in accordance with the marking made in the overview image.
- the separated portion 69 is collected.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Microscoopes, Condenser (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002233157A AU2002233157A1 (en) | 2001-01-18 | 2002-01-10 | Specimen slide, microdissection device comprising a specimen slide and a microdissection method |
DE10290161T DE10290161D2 (en) | 2001-01-18 | 2002-01-10 | Slide, microdissection device with slide and method for microdissection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10102034.1 | 2001-01-18 | ||
DE2001102034 DE10102034A1 (en) | 2001-01-18 | 2001-01-18 | Slide, microdissection device with slide and method for microdissection |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002057746A2 true WO2002057746A2 (en) | 2002-07-25 |
WO2002057746A3 WO2002057746A3 (en) | 2002-11-21 |
Family
ID=7670908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/000056 WO2002057746A2 (en) | 2001-01-18 | 2002-01-10 | Specimen slide, microdissection device comprising a specimen slide and a microdissection method |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002233157A1 (en) |
DE (2) | DE10102034A1 (en) |
WO (1) | WO2002057746A2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004061425A1 (en) * | 2003-01-04 | 2004-07-22 | Rowiak Gmbh | Microtome |
US7456938B2 (en) * | 2003-11-07 | 2008-11-25 | Mds Analytical Technologies (Us) Inc. | Laser microdissection on inverted polymer films |
US10156501B2 (en) | 2001-11-05 | 2018-12-18 | Life Technologies Corporation | Automated microdissection instrument for determining a location of a laser beam projection on a worksurface area |
US10866170B2 (en) | 2011-01-24 | 2020-12-15 | Roche Molecular Systems, Inc | Devices, systems, and methods for extracting a material from a material sample |
US10871425B2 (en) | 2015-01-31 | 2020-12-22 | Roche Molecular Systems Inc. | Systems and methods for meso-dissection |
US10876933B2 (en) | 2016-11-09 | 2020-12-29 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
US11125660B2 (en) | 2015-01-31 | 2021-09-21 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5585644A (en) * | 1994-12-19 | 1996-12-17 | U.S. Philips Corporation | Polyethylene naphthalate X-ray window |
US5998129A (en) * | 1996-02-05 | 1999-12-07 | P.A.L.M. Gmbh | Method and device for the contactless laser-assisted microinjection, sorting and production of biological objects generated in a planar manner |
DE10039979A1 (en) * | 2000-08-16 | 2002-03-07 | P A L M Gmbh | Carrier device for a preparation for separating individual objects from the preparation by means of laser radiation |
EP1207392A1 (en) * | 2000-11-17 | 2002-05-22 | Leica Microsystems Wetzlar GmbH | Device for holding thin slices |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19616216A1 (en) * | 1996-04-23 | 1997-10-30 | P A L M Gmbh | Laser beam process and assembly separates individual cells from tissue mass |
DE19818425A1 (en) * | 1997-10-18 | 1999-07-15 | Malte Dr Med Boehm | Microdissection sample handling device for histology or cytology |
-
2001
- 2001-01-18 DE DE2001102034 patent/DE10102034A1/en not_active Withdrawn
-
2002
- 2002-01-10 AU AU2002233157A patent/AU2002233157A1/en not_active Abandoned
- 2002-01-10 WO PCT/DE2002/000056 patent/WO2002057746A2/en not_active Application Discontinuation
- 2002-01-10 DE DE10290161T patent/DE10290161D2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5585644A (en) * | 1994-12-19 | 1996-12-17 | U.S. Philips Corporation | Polyethylene naphthalate X-ray window |
US5998129A (en) * | 1996-02-05 | 1999-12-07 | P.A.L.M. Gmbh | Method and device for the contactless laser-assisted microinjection, sorting and production of biological objects generated in a planar manner |
DE10039979A1 (en) * | 2000-08-16 | 2002-03-07 | P A L M Gmbh | Carrier device for a preparation for separating individual objects from the preparation by means of laser radiation |
EP1207392A1 (en) * | 2000-11-17 | 2002-05-22 | Leica Microsystems Wetzlar GmbH | Device for holding thin slices |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10156501B2 (en) | 2001-11-05 | 2018-12-18 | Life Technologies Corporation | Automated microdissection instrument for determining a location of a laser beam projection on a worksurface area |
WO2004061425A1 (en) * | 2003-01-04 | 2004-07-22 | Rowiak Gmbh | Microtome |
US7456938B2 (en) * | 2003-11-07 | 2008-11-25 | Mds Analytical Technologies (Us) Inc. | Laser microdissection on inverted polymer films |
US11175203B2 (en) | 2004-09-25 | 2021-11-16 | Life Technologies Corporation | Automated microdissection instrument using tracking information |
US10605706B2 (en) | 2004-09-25 | 2020-03-31 | Life Technologies Corporation | Automated microdissection instrument with controlled focusing during movement of a laser beam across a tissue sample |
US11703428B2 (en) | 2004-09-25 | 2023-07-18 | Life Technologies Corporation | Automated microdissection instrument and method for processing a biological sample |
US10866170B2 (en) | 2011-01-24 | 2020-12-15 | Roche Molecular Systems, Inc | Devices, systems, and methods for extracting a material from a material sample |
US11181449B2 (en) | 2015-01-31 | 2021-11-23 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US11125660B2 (en) | 2015-01-31 | 2021-09-21 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US10871425B2 (en) | 2015-01-31 | 2020-12-22 | Roche Molecular Systems Inc. | Systems and methods for meso-dissection |
US11768136B2 (en) | 2015-01-31 | 2023-09-26 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US11860072B2 (en) | 2015-01-31 | 2024-01-02 | Roche Molecular Systems, Inc. | Systems and methods for meso-dissection |
US10876933B2 (en) | 2016-11-09 | 2020-12-29 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
US11971333B2 (en) | 2016-11-09 | 2024-04-30 | Ventana Medical Systems, Inc. | Automated tissue dissection instrument and methods of using the same |
Also Published As
Publication number | Publication date |
---|---|
AU2002233157A1 (en) | 2002-07-30 |
DE10290161D2 (en) | 2004-04-15 |
WO2002057746A3 (en) | 2002-11-21 |
DE10102034A1 (en) | 2002-08-08 |
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