JP3033094U - Microtome knife holder with openable safety guard - Google Patents

Abstract

(57) [Summary] (Corrected) [Problem] When slicing a sample using a microtome,
A protection device was installed to prevent workers from inadvertently touching the cutting edge of the microtome and injuring it, and the existence of this device does not hinder the thin-slicing work. Even if it is temporarily excluded, it must be surely returned to the original position at the next thin section. SOLUTION: A microtome knife holder A-1 has a bearing hole A-4 for receiving a slide bar A-5 on a side surface thereof.
The slide bar A-5 can slide left and right and rotate. Left and right arms A-6 are provided at both ends of the slide bar A-5, and a guard bar A-7 is fixed to the other end of the arm so that the arm can rotate about A-4 and slide to the left and right. A magnet piece is fixed to the left arm, and it is considered that the knife guard follows the yoshinba replacement blade holder A-2 even if it is moved to the left or right.

Description

[Detailed description of the invention]

[0001]

[Usage field to which the invention belongs]

 The present invention is used in the technical field of a microtome for slicing a microscope sample.Specifically, it is installed in a microtome knife holder and an operator accidentally touches the cutting edge of the knife. It relates to a protective device to prevent the above.

[0002]

[Prior Art Means]

 When it becomes necessary to histologically and microscopically observe various materials, this sample is generally sliced using a microtome as shown in FIG.

FIG. 3 is a perspective view showing the structure of a commonly used microtome, in which the main body of the microtome is fixed to a microtome knife holder with a spare blade holder. A spare blade is set on one side of the spare blade holder, and the sample is sliced into a few microns in thickness by this blade.

Since the replacement blade is an extremely sharp blade, an operator often touches the replacement blade to cause an injury accident.

Conventionally, as a preventive measure against this injury accident, a metal rod or a metal plate which is an obstacle is fixed immediately before this blade tip so that the operator's fingertip does not directly touch the blade. There were things to consider.

However, this defensive measure rather hinders thin-slicing work and replacement of spare blades, and the worker removes the bending device and uses it in a dangerous state.

[0007]

[Means to be Solved by the Present Invention] From the above matters, the necessary items required for the present invention are:

The guard bar must be surely positioned at a certain distance from the cutting edge during the thin-section work.

Even if the replacement blade holder is moved laterally to change the position of the blade edge, the guard bar follows this and maintains the original position with the blade edge.

When the replacement blade is replaced or the back of the blade is cleaned, when the device becomes an obstacle, it is temporarily removed by the simplest means. (In the present invention, it is raised upward.)

When the work described in the preceding paragraph is completed and thin sectioning is started again, the thin section is surely restored. (It is difficult to take out a sliced slice if it is still raised.)

[0012]

[Effect of the invention]

 As described above, according to the microtome knife holder with the safety guard according to the present invention, when the replacement blade holder is attached to the microtome knife holder, when the replacement blade is replaced and attached to the replacement blade holder, or when it is necessary, it is already installed. When the presence of a guard bar interferes with these operations, such as when performing a clean adjustment of a certain blade, it can be done by simply raising it slightly upward, and at the start of thin sectioning, put the guard bar in the lower original position. I'll return. In addition, the presence of the guard bar that has been lifted up is an obstacle, and the operator must return the guard bar to the original position below, and this purpose is achieved. In addition, since it is necessary to always select a sharp cutting edge for thin cutting, it is necessary to always slide the blade holder to the left and right and re-fix it on the knife holder. Even in this case, the safety guard always follows the spare blade holder by the effect of the magnet piece attached to one end of the safety guard to reach the purpose of safety for the worker.

[Brief description of the drawings]

FIG. 1 is a perspective view of a microtome knife holder equipped with a safety guard according to the present invention when it is sliced.

FIG. 2 is a perspective view of a state in which the guard bar is also raised upward.

FIG. 3 is a perspective view of a microtome which is very commonly used in the past, but without a safety guard.
Is a microtome body, and a replacement blade holder is fixed to a knife holder, and a replacement blade is attached to one side of this, and it has a mechanism that slices a sample rising from the bottom by several microns.

[Explanation of symbols]

 A-1 Microtome knife holder main body A-2 Spare blade holder A-3 Spare blade A-4 Slide bearing A-5 Slide bar A-6 Arm (left and right) A-7 Guard bar A-8 Adjustment screw for returning to original position (left and right) ) B-9 Magnet piece Microtome main body Slide table Microtome knife holder Spare blade holder Spare blade Sample piece Sample table Propulsion mechanism

Claims (3)

[Utility model registration claims] 1. Use in a microtome constructed such that when a tool rest is slid on a sample stand on which a sample is attached, a microtome knife attached to the tool rest slices the sample attached to the sample stand. The safety guard bar, which is installed immediately in front of the cutting edge of the microtome knife, is always in front of the cutting edge even if it slides to the left or right as needed to change the length and cutting position of the blade holder for the safety of the operator. A microtome knife holder equipped with a safety guard, characterized in that a magnet piece is attached to one end of this device so as to be effective. 2. In the spare blade holder according to claim 1, when the replacement blade is replaced or the presence of the guard bar interferes with the work, it can be easily removed by flipping it up. The microtome knife holder according to claim 1, characterized in that. 3. A microtome holder equipped with a safety guard according to claim 1, further comprising an adjusting screw for the purpose of positioning so that the guard bar, which has been lifted up according to claim 2, can be correctly returned to its original position after blade replacement. .