US3191476A - Anti-roll device - Google Patents

Anti-roll device Download PDF

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Publication number
US3191476A
US3191476A US17675162A US3191476A US 3191476 A US3191476 A US 3191476A US 17675162 A US17675162 A US 17675162A US 3191476 A US3191476 A US 3191476A
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Prior art keywords
specimen
section
knife
carrier
fluid
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Expired - Lifetime
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James B Mccormick
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Ames Atomium Inc
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Ames Atomium Inc
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/04Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/06Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/263With means to apply transient nonpropellant fluent material to tool or work

Description

June 29, 1965 amcoRMlck 3,191,476

ANTI-ROLL DEVICE Filed March 1. 1962 FLUID SUPPLY 1 INVENTOR.

M My 4110 United States Patent 3,191,476 ANTI-ROLL DEVICE James B. McCormick, La Grange, 11]., assignor, by mesne assignments, to Arnes Atornium, Inc., Billerica, Mass, a corporation of Massachusetts Filed Mar. 1, 1962, Ser. No. 176,751 7 Claims. (Cl. 83-469) This invention relates principally to the preparation of tissue sections for microscopic examination and, more particularly, to an improved method of slicing such a section from a tissue specimen.

The invention also relates to a device particularly adapted to carry out the improved method.

In order to microscopically examine an organic specimen such as, for example, a tissue specimen obtained through a biopsy or the like, it is necessary to prepare thin slices of the specimen, these slices being known as sections. The sections have a thickness range from about 2 to 25 microns and are sliced from the specimen by means of a microtome instrument which conventionally includes a movable carrier, on which the specimen is mounted, and a stationary knife blade disposed adjacent the path of movement of the carrier. The carrier is reciprocated past the knife as well as advanced toward the knife, by means of a crank, and a section is sliced from the specimen by the knife during a portion of the movement of the carrier.

As the section is sliced from the specimen and moves away from the cutting edge of the knife, it frequently curls or rolls into a cylinder, a condition which renders it unsuitable for mounting in slides or the like. While a curled section can occasionally be straightened and used, it generally breaks when an attempt is made to uncurl it because of its thinness and consequent low strength. As a general rule, therefore, a section which has curled is unusable.

The curling of a section generally results from improper preparation of the specimen or improper adjustment of the instrument, but both of these factors are so critical that the slicing of a section in which curling does not occur generally requires the services of a technician of considerable experience. For a technician of modest training, the proper slicing of a section is approached on a trial and error basis, with consequent expense of both time and effort. In surgical pathology, however, where a patient is frequently maintained under anesthetic on the operating table pending the results of the microscopic examination, a time-consuming method of preparing the section cannot be tolerated.

One common solution to the rolling of the section concerns the use of a soft brush to assist the section as it leaves the knife. However, this technique requires a very delicate touch on the part of the technician and is generally not at all satisfactory in routine use.

Accordingly, the principal object of the present invention is to provide an improved method of slicing a thin section from a specimen.

An additional object of the invention to provide a device which will slice a section from a specimen without curling of the section.

Other objects and advantages of the invention will become apparent with reference to the following description and accompanying drawings in which:

FIGURE 1 is an isometric view of a microtome provided with means for accomplishing the method of the present invention; 7

FIGURE 2 is a fragmentary elevational view of the specimen carrier of the microtome as viewed in the direction of the arrows 2-2 of FIGURE 1; and

FIGURES 3 and 4 are diagrammatic views showing the carrier of FIGURE 2, partially in section, as it moves the specimen into engagement with the knife of the microtome.

. Patented June 29, 1965 While it is recognized that the preparation of the sections, particularly tissue sections, generally involves a detailed procedure which includes such steps as the preparation of the specimen, and the mounting of the specimen on the microtome, etc., the present invention is directed principally to that step in which the section is sliced from the specimen. In accordance with the method of the invention (see FIGS. 3 and 4), a stream of gaseous fluid is directed toward the section as it is formed so as to urge it against the face of the knife and thereby prevent its curling. Preferably, the gaseous fluid is directed across the surface of the specimen toward that edge of the specimen which is the first to be contacted by the knife so that the stream of fluid will engage each portion of the section immediately upon its being formed, the section suitable results. When the knife is slicing the section from the specimen, therefore, the fluid will flow across the outer face of the knife and will flatten the section against the face of the knife.

Also, it is found preferable to use a fluid below ambient temperature, especially when the specimen is frozen, and air from the cold well of a cryostat has been found to be satisfactory for this purpose.

The device provided for carrying out the above-method is illustrated generally in FIGURE 1 and comprises a microtome 11 which includes a generally rectangular base 13, on the rearward portion of which is carried a box-like housing 15 having an elongated vertically disposed opening 17 in its forward wall through which a specimen carrier 19 projects outwardly. The carrier is connected-to an operating mechanism (not shown) enclosed by the housing 15 which raises and lowers the carrier and advances it forwardly when a handle 21, rotatably mounted on a side of the housing, is turned manually.

The carrier 19 comprises a generally cylindrical shaft 23 bored axially into its forward face to provide a cavity 25 within which a specimen 27, embedded in the forward face of a rectangular paraffin block 29, is carried. The block 29 is of such a size that the specimen projects outwardly of the cavity 25 in overhanging relation to a knife blade 31, hereinafter described, and is maintained within the cavity by a clamping plate 33 urged against the upper surface of the paraffin block 29 by an adjustable screw 35.

A knife support 37 is carried in a guideway 39 on the forward portion of the base 13 so as to be movable in the guideway to an out of the way position as, for example, when the knife blade 31 is to be replaced or cleaned. The blade 31 is carried at the upper end of the support 37 and is secured in place by set screws 41 which permit the blade -to be adjusted to various angles relative to the vertical as the occasion may demand.

In order to carry out the method of the present invention, a nozzle 43 is secured to the upper surface of the carrier shaft 23 by means of a clip 45, and is connected by a flexible hose 47 to a supply of gaseous fluid as, for example, a compressor in communication with the cold well of a cryostat. The nozzle 43 is positioned so that it will direct a jet of fluid toward the face of the specimen at an angle of approximately 45 degrees and, to ensure that its disposition will remain relatively fixed, preferably includes a neck 49 formed of a flexible metal tubing.

As can be seen best in FIGURES 3 and 4, the fluid is directed toward the surface of the specimen and, as the carrier is lowered so as to bring the specimen into engagement with the knife blade 31, is deflected by the specimen and flows downwardly along the forward face of the blade. As the section is being formed (FIG. 4), the flow of fluid urges the section against the face of the blade and prevents the section from curling.

While the preferred form of the device for effecting the method has been shown in the form of a microtome having a nozzle 43 mounted on the carrier so as to travel with the carrier as it is raised and lowered, it should be apparent that the method could be effected by mounting the nozzle on other portions of the microtome such as, for example, on the knife support 37. In the latter instance, of course, the nozzle would remain stationary during the operation of the device.

While various features of the invention have been shown and described, it should be apparent that various modifications may be made therein without departing from the scope of the invention as set forth in the following claims.

What is claimed is:

1. The method of providing a thin section of a specimen for use in microscopic examination, which method includes the step of slicing a generally planar uniform thin section from a surface of the specimen by means of a knife while directing a stream of gaseous fluid toward that edge of the specimen which is the first to be contacted by the knife so as to urge the section against the face of the knife as the section is being formed and thereby minimize curling thereof.

2. The method of providing a thin section of a specimen for use in microscopic examination, which method includes the step of slicing the section from a surface of the specimen by means of a knife while directing a stream of gaseous fluid having a temperature less than ambient toward that edge of the specimen which is the first to be contacted by the knife, said fluid being directed at an angle acute to the surfaceof the specimen and in a direction which will urge the section against the face of the knife as the section is being formed so as to thereby minimize curling thereof.

3. The method of providing a thin section of a specimen for use in microscopic examination, which method includes the step of slicing the section from a surface of the specimen by means of a knife while directing a stream of gaseous fluid having a temperature less than ambient toward that edge of the specimen which is the first to be contacted by the knife, said fluid being directed at an angle of approximately 45 degrees to the surface of the specimen in a direction which will urge the section against the face of the knife as the section is being formed so as to thereby minimize curling thereof.

4. In combination, a microtome including a specimen carrier and a knife adjacent said carrier adapted to slice sections from the surface of the specimen incident to predetermined relative reciprocal movement between said carrier and knife, fluid-dispensing means connected to a source of gaseous fluid under pressure, and means for mounting said fluid-dispensing means so as to cause it to direct a stream of gaseous fluid toward that edge of the specimen which is the first to be contacted by the knife so as to cause the stream to flow over the section and urge the section against the face of the knife as the section is being formed, thereby overcoming the tendency of the section to curl.

5. In combination, a microtome including a specimen carrier and a knife adjacent said carrier adapted to slice sections from the surface of the specimen carried thereby incident to predetermined relative movement between said carrier and knife, fluid-dispensing means, means for mounting said fluid dispensing means so as to direct a stream of gaseous fluid toward that edge of the specimen which is the first to be contacted by the knife, said fluid being directed by said fluid-dispensing means at an angle acute to the surface of the specimen and in a direction which will urge the section against the face of the knife while the section is being formed to thereby minimize curling thereof, and means connecting said nozzle to a supply of gaseous fluid having a temperature less than ambient.

6. In combination, a microtome including a specimen carrier and a knife adjacent said carrier adapted to slice sections from the surface of the specimen carried thereby incident to predetermined relative movement between said carrier and knife, a fluid-dispensing nozzle, means for mounting said nozzle so as to direct a stream of gaseous fluid to 'ard that edge of the surface of the specimen which is the first to be contacted by the knife, said fluid being directed at an angle of approximately 45 degrees to the surface of the specimen and in a direction which will urge the section against the face of the knife while the section is being formed, and means connecting said nozzle to a supply of air having a temperature less than ambient.

7. In combination, a microtome including a specimen carrier and a knife adjacent said carrier adapted to slice sections from the surface of the specimen when said carrier is moved relative to the edge of said knife, a fluiddispensing nozzle, means for mounting said nozzle on said carrier so as to direct a stream of fluid dispensed therefrom toward that edge of the surface of the specimen which is the first to be contacted by the knife, said fluid thereby flowing across the face of the specimen toward said edge while said section is being formed, and means connecting said nozzle to a supply of air under a pressure greater than atmospheric and of a temperature less-than ambient.

References Cited by the Examiner UNITED STATES PATENTS 1,648,938 11/27 Dietrick 83169 2,061,581 11/36 Lippincott 8250 2,288,709 7/42 Hood 146241 2,662,445 12/53 Jacoby 83915.5

ANDREW R. JUHASZ, Primary Examiner.

CARL W. TOMLIN, Examiner.

Claims (1)

1. THE METHOD OF PROVIDING A THIN SECTION OF A SPECIMEN FOR USE IN MICROSCOPIC EXAMINATION, WHICH METHOD INCLUDES THE STEP OF SLICING A GENERALLY PLANAR UNIFORM THIN SECTION FROM A SURFACE OF THE SPECIMEN BY MEANS OF A KNIFE WHILE DIRECTING A STREAM OF GENEOUS FLUID TOWARD THAT EDGE OF THE SPECIMEN WHICH IS THE FIRST TO BE CONTACTED BY THE KNIFE SO AS TO URGE THE SECTION AGAINST THE FACE OF THE KNIFE SO AS THE SECTION IN BEING FORMED AND THEREBY MINIMIZE CURLING THEREOF.
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293966A (en) * 1964-09-29 1966-12-27 Miles Lab Microtome anti-roll device
US3667330A (en) * 1970-12-16 1972-06-06 Devco Inc Microtome assembly
US3732768A (en) * 1970-04-07 1973-05-15 Nat Res Dev Microtome knife mount
JPS54161192U (en) * 1978-04-21 1979-11-10
WO1994001751A1 (en) * 1992-07-10 1994-01-20 Ctl Diehm International Process and device for producing thin sections by means of a microtome
WO1994028390A1 (en) * 1993-06-02 1994-12-08 Microm Laborgeräte GmbH Suction microtome, especially for histological research and the like
US5865081A (en) * 1995-03-27 1999-02-02 Sakura Finetek U.S.A., Inc. Anti-roll rake
DE19815696A1 (en) * 1998-04-08 1999-10-21 Gsf Forschungszentrum Umwelt Temperature controlled Überströmapparatur for biological samples
US5988029A (en) * 1996-09-30 1999-11-23 Microm Laborgerate Gmbh Height-adjustable table for a microtome
US6058824A (en) * 1996-09-02 2000-05-09 Leica Instruments Gmbh Cutter holder for accommodating wedge-shaped microtome cutters
US20040251434A1 (en) * 2003-06-07 2004-12-16 Leica Mikrosysteme Gmbh Ergonomic apparatus for cutting specimens
US20070204734A1 (en) * 2006-01-18 2007-09-06 Tetsumasa Ito Automatic sliced piece fabricating apparatus and automatic sliced piece sample fabricating apparatus
JP2008164522A (en) * 2006-12-28 2008-07-17 Seiko Instruments Inc Sliced piece preparing apparatus, cutting method of embedding block and sliced piece preparation method
US20090181422A1 (en) * 2008-01-10 2009-07-16 Christoph Schmitt Method and apparatus for producing histological sections with a microtome
DE102008000035A1 (en) * 2008-01-10 2009-07-23 Leica Biosystems Nussloch Gmbh Device and method for separating custom built by a microtome histological sections
US20090199716A1 (en) * 2008-02-08 2009-08-13 Christoph Schmitt Apparatus and method for filtering sectioning wastes of a microtome that are present in an air stream
JP2010054444A (en) * 2008-08-29 2010-03-11 Seiko Instruments Inc Thin-section manufacturing apparatus and thin-section transfer method
US20100064867A1 (en) * 2008-09-16 2010-03-18 Leica Biosystems Nussloch Gmbh Microtome for producing sections of specimens
DE102011051097A1 (en) * 2011-06-16 2012-12-20 Leica Biosystems Nussloch Gmbh An apparatus for cutting of histological samples with a helical capillary tube

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1648938A (en) * 1926-11-04 1927-11-15 Greenville Steel Car Method and apparatus for cooling friction saws
US2061581A (en) * 1934-12-05 1936-11-24 Ideal Roller & Mfg Company Apparatus for trimming cylinders
US2288709A (en) * 1938-04-13 1942-07-07 George J Hood Dermatome and method of excising skin
US2662445A (en) * 1950-08-17 1953-12-15 Jr George W Jacoby Microtome knife

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1648938A (en) * 1926-11-04 1927-11-15 Greenville Steel Car Method and apparatus for cooling friction saws
US2061581A (en) * 1934-12-05 1936-11-24 Ideal Roller & Mfg Company Apparatus for trimming cylinders
US2288709A (en) * 1938-04-13 1942-07-07 George J Hood Dermatome and method of excising skin
US2662445A (en) * 1950-08-17 1953-12-15 Jr George W Jacoby Microtome knife

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293966A (en) * 1964-09-29 1966-12-27 Miles Lab Microtome anti-roll device
US3732768A (en) * 1970-04-07 1973-05-15 Nat Res Dev Microtome knife mount
US3667330A (en) * 1970-12-16 1972-06-06 Devco Inc Microtome assembly
JPS54161192U (en) * 1978-04-21 1979-11-10
JPS575557Y2 (en) * 1978-04-21 1982-02-02
WO1994001751A1 (en) * 1992-07-10 1994-01-20 Ctl Diehm International Process and device for producing thin sections by means of a microtome
CN1036944C (en) * 1992-07-10 1998-01-07 迈克罗姆实验室用具有限公司 Method and apparatus for producing thin plate by use of cutter blade
US5713255A (en) * 1992-07-10 1998-02-03 Microm Laborgerate Gmbh Process and apparatus for the production of thin sections by means of a microtome
FR2705917A1 (en) * 1993-06-02 1994-12-09 Tabone Herve Microtome suction, including histological and similar work.
WO1994028390A1 (en) * 1993-06-02 1994-12-08 Microm Laborgeräte GmbH Suction microtome, especially for histological research and the like
US5865081A (en) * 1995-03-27 1999-02-02 Sakura Finetek U.S.A., Inc. Anti-roll rake
US6058824A (en) * 1996-09-02 2000-05-09 Leica Instruments Gmbh Cutter holder for accommodating wedge-shaped microtome cutters
US5988029A (en) * 1996-09-30 1999-11-23 Microm Laborgerate Gmbh Height-adjustable table for a microtome
DE19815696A1 (en) * 1998-04-08 1999-10-21 Gsf Forschungszentrum Umwelt Temperature controlled Überströmapparatur for biological samples
DE19815696C2 (en) * 1998-04-08 2000-06-29 Gsf Forschungszentrum Umwelt Temperature controlled Überströmapparatur for biological samples
US20040251434A1 (en) * 2003-06-07 2004-12-16 Leica Mikrosysteme Gmbh Ergonomic apparatus for cutting specimens
DE10325945A1 (en) * 2003-06-07 2005-01-05 Leica Mikrosysteme Gmbh Ergonomic device for cutting preparations
US20070204734A1 (en) * 2006-01-18 2007-09-06 Tetsumasa Ito Automatic sliced piece fabricating apparatus and automatic sliced piece sample fabricating apparatus
US7802507B2 (en) * 2006-01-18 2010-09-28 Seiko Instruments Inc. Automatic sliced piece fabricating apparatus and automatic sliced piece sample fabricating apparatus
JP2008164522A (en) * 2006-12-28 2008-07-17 Seiko Instruments Inc Sliced piece preparing apparatus, cutting method of embedding block and sliced piece preparation method
DE102008000035A1 (en) * 2008-01-10 2009-07-23 Leica Biosystems Nussloch Gmbh Device and method for separating custom built by a microtome histological sections
JP2009168808A (en) * 2008-01-10 2009-07-30 Leica Biosystems Nussloch Gmbh Apparatus and method for isolating tissue slice formed by microtome
US8765401B2 (en) 2008-01-10 2014-07-01 Leica Biosystems Nussloch Gmbh Method and apparatus for producing histological sections with a microtome
US8728799B2 (en) 2008-01-10 2014-05-20 Leica Biosystems Nussloch Gmbh Apparatus and method for isolating histological sections produced with a microtome
DE102008000035B4 (en) * 2008-01-10 2011-02-24 Leica Biosystems Nussloch Gmbh Apparatus for singling-made with a microtome histological sections
US20090181422A1 (en) * 2008-01-10 2009-07-16 Christoph Schmitt Method and apparatus for producing histological sections with a microtome
US8172927B2 (en) 2008-02-08 2012-05-08 Leica Biosystems Nussloch Gmbh Apparatus and method for filtering sectioning wastes of a microtome that are present in an air stream
JP2009186478A (en) * 2008-02-08 2009-08-20 Leica Biosystems Nussloch Gmbh Apparatus and method for filtering slice wastes of a microtome present in air stream
US8048206B2 (en) 2008-02-08 2011-11-01 Leica Biosystems Nussloch Gmbh Apparatus and method for filtering sectioning wastes of a microtome that are present in an air stream
US8152906B2 (en) 2008-02-08 2012-04-10 Leica Biosystems Nussloch Gmbh Apparatus and method for filtering sectioning wastes of a microtome that are present in an air stream
US20090199716A1 (en) * 2008-02-08 2009-08-13 Christoph Schmitt Apparatus and method for filtering sectioning wastes of a microtome that are present in an air stream
JP2010054444A (en) * 2008-08-29 2010-03-11 Seiko Instruments Inc Thin-section manufacturing apparatus and thin-section transfer method
US20100064867A1 (en) * 2008-09-16 2010-03-18 Leica Biosystems Nussloch Gmbh Microtome for producing sections of specimens
DE102008047415B4 (en) * 2008-09-16 2010-12-02 Leica Biosystems Nussloch Gmbh Microtome for producing slices of an object
DE102008047415A1 (en) * 2008-09-16 2010-04-15 Leica Biosystems Nussloch Gmbh Microtome for producing slices of an object
DE102011051097A1 (en) * 2011-06-16 2012-12-20 Leica Biosystems Nussloch Gmbh An apparatus for cutting of histological samples with a helical capillary tube
DE102011051097B4 (en) * 2011-06-16 2013-08-08 Leica Biosystems Nussloch Gmbh Microtome for cutting histological samples with a helical capillary tube
US8850848B2 (en) 2011-06-16 2014-10-07 Leica Biosystems Nussloch Gmbh Apparatus for sectioning histological samples having a spiral-shaped capillary tube

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