JPH041930Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a magnifying glass for observing a straw tube containing a fertilized egg.

[Conventional technology]

In recent years, in the field of livestock farming, fertilized egg transplantation techniques for livestock have been developed and put to practical use, and are useful for improving breeds and increasing production efficiency. Artificial insemination is performed on superovulated cows, and multiple eggs are taken out of the body and implanted into the recipient cow, but they are also stored by freezing in a transparent, small-diameter straw tube, and then thawed. The common method is to transplant the embryo into a recipient cow. To explain this method in more detail, from the plug side of the straw tube, add appropriate amounts of preservation solution, air space, preservation solution, air space, a small amount of cryoprotectant containing eggs, air space, and a small amount of preservation solution in that order. It is sucked up and sealed and stored frozen.

When transferring a fertilized egg to a recipient cow, it is thawed and transferred, but due to the nature of the cryoprotectant, it is not desirable to put it into the uterus as it may cause infertility, so the sealed end of the straw tube should be facing upward. When keeping the container vertically and mixing a small amount of preservation solution, cryoprotectant, and preservation solution, the cryoprotectant has a lower specific gravity than the preservation solution and moves to the top, and conversely, the fertilized eggs gradually settle as the cryoprotectant is removed. In this case, the cryoprotectant adhering to the outer surface of the fertilized egg is gradually washed away by the preservation solution during the sedimentation process. Thereafter, the cryoprotectant portion of the straw tube is cut out, and the fertilized eggs separated from the cryoprotectant are implanted into the uterus of the recipient cow together with a preservation solution.

When fertilized eggs are cryopreserved in this way and then thawed, the fertilized eggs may not be able to maintain their normal state and may be destroyed, and it is important to observe and confirm that they are in a normal state. must not. When observing the condition of a fertilized egg stored in such a straw tube, it is necessary to confirm its condition immediately before transplanting it into a recipient cow, so the straw tube must be kept in an upright position so that the fertilized egg does not pass through the straw. It is desirable to observe the precipitation as it settles in the tube, and therefore a magnifying glass as shown in FIG. 4 is used.

The magnifying glass shown in FIG. 4 above will be explained below.

Reference numeral 11 in the figure is a magnifying glass. Loupe 11 is
It consists of a magnifying glass body 12 having a convex lens and a cylindrical tube part 13 attached to the magnifying glass body 12, and an object to be observed is fixed to the front part of the tube part 13 to observe the object. It is configured.

When observing the straw tube using the magnifying glass 11 configured in this way, hold the straw tube upright in one hand so that the antifreeze layer and the preservation solution layer inside the straw tube do not mix. Then, with the magnifying glass 11 in the other hand, focus on the straw tube and observe it.

Furthermore, a microscope may be used to observe the straw tube as described above. However, with a microscope, it is difficult to observe the straw tube in an upright position due to its structure, so the straw tube is left lying down before separating the fertilized eggs and cryoprotectant inside the straw tube. I will be observing.

[Problem that the invention attempts to solve]

By the way, when observing a straw tube held upright in one hand using a loupe as described above, even if the hand holding the straw tube or the hand holding the loupe moves slightly, the focus of the loupe may shift. There was a problem in that it was extremely time-consuming. In addition, when observing the straw tube while holding it in the hand, there was a problem that the straw tube could slip and fall, resulting in destruction of the fertilized eggs.

Furthermore, in the above-mentioned microscope, it is not possible to observe the above-mentioned straw tube in an upright state, and therefore there is a disadvantage that the state of the fertilized egg cannot be confirmed immediately before being transplanted into a recipient cow. Furthermore, in order to observe the fertilized eggs using a microscope, the fertilized eggs must be transported to the transplant site, which poses the problem of time-consuming transportation.

This invention solves the above problems and makes it easier to observe the straw tube, makes it easier to handle the straw tube, and also creates a magnifying glass that can observe the fertilized egg immediately before it is transferred to the recipient cow. The question is whether it will be realized.

[Means for solving problems]

The straw tube observation loupe of this invention includes a cylindrical loupe body with a built-in convex lens, an eyepiece provided on one side of the loupe body in the optical axis direction of the convex lens, and and a holding means attached to the opposite side of the part to hold a straw tube containing an object to be observed.

〔Example〕

1 to 3 are diagrams showing an embodiment of this invention.

In the figure, reference numeral 1 is a magnifying glass for observing a straw tube, and 2 is a straw tube (indicated by a two-dot chain line). The straw tube observation magnifying glass 1 is composed of a cylindrical magnifying glass main body 3 and a cylindrical straw tube fixing part 4.
A convex lens (not shown) is provided inside the magnifying glass main body 3. Here, the convex lens is built into the magnifying glass body 3 with its optical axis aligned with the central axis direction of the magnifying glass body 3. Furthermore, an observation window 5 (eyepiece) is formed on one end surface 3a of the loupe main body 3. This observation window 5 is formed on one side of the convex lens in the optical axis direction. The magnifying glass main body 3 is also provided with a focus fine adjustment section (not shown). The straw tube fixing part 4 is attached to the loupe body 3
The inside of the magnifying glass is attached to the opposite side of the observation window 5, as shown in FIG.
observation space 6. Further, a pair of insertion ports 7, 7 are formed in the straw tube fixing portion 4 at axially symmetrical positions, respectively. Further, a holding band 8 made of an elastic material such as natural rubber is attached to the outer peripheral surface of the straw tube fixing part 4 so as to cover the insertion openings 7, 7. Holding slits 9, 9 are formed at positions covering the insertion openings 7, 7 of this holding band 8, respectively, and these holding slits 9, 9 are connected to the straw tube 2.
When the straw tube 2 is inserted, a part of the straw tube 2 is configured to face the observation space 6 by the loupe body 3. Further, the holding slits 9, 9 extend in the axial direction of the straw tube fixing part 4, as shown in FIG.

Next, a procedure for observing the fertilized eggs stored inside the straw tube 2 using the straw tube observation magnifying glass 1 configured as described above will be explained.

First, the straw tube 2 is inserted into the holding slits 9 in an upright state as shown in FIG. Then, since the holding band 8 is an elastic body, the holding slits 9, 9 easily elastically deform to receive the straw tube 2, and then partially elastically return to hold the straw tube 2. Next, the position of the fertilized egg within the straw tube 2 is confirmed by looking through the observation window 5 of the loupe main body 3 while moving the straw tube 2 in the vertical direction in the figure. Furthermore, the straw tube 2 is held by the slits 9, 9.
The fertilized egg is focused on the fertilized egg by looking through the observation window 5 while moving horizontally along the figure, and the fertilized egg is finely adjusted by the focus fine adjustment section of the loupe body 3 and then observed.

As explained above, this straw tube observation magnifying glass 1 has a holding band 8 which is attached to the straw tube fixing part 4 in a wrapped state.
9, since the straw tube 2 is inserted and fixed for observation, once the position of the partially fertilized egg is confirmed and focused, the focus will not shift, making it easy to observe. can be easily done. In addition, this straw tube observation loupe 1 can move and fix the straw tube 2 up and down and back and forth (left and right in the figure), so it is easy to confirm the position of the fertilized egg and adjust the focus. Hold the straw tube observation magnifying glass 1 and the straw tube 2 in one hand.
Therefore, the fine focus adjustment section of the loupe main body 3 can be easily handled with the other hand. Furthermore, this straw tube observation magnifying glass 1
This can prevent the straw tube 2 from being accidentally dropped during observation.

In this embodiment, the straw tube fixing section 4 and the holding band 8 are provided individually, but if the straw tube fixing section is made of an elastic material, the straw tube fixing section 4 and the holding band 8 can be attached directly to the straw tube fixing section without using the holding band. A holding slit may be provided, and the straw tube may be inserted into the holding slit and fixed. In addition, in this case, the holding slits are the holding slits 9 and 9 shown in FIG.
The straw tube 2 is not limited to the shape, size, and position of the straw tube 9, and a portion of the straw tube 2 held is held in the observation space 6 of the loupe body 3.
It is fine as long as it makes you feel present.

[Effect of idea]

According to this devised straw tube observation magnifying glass,
A cylindrical loupe body with a built-in convex lens, an eyepiece provided on one side of the loupe body in the optical axis direction of the convex lens, and an eyepiece attached to the opposite side of the loupe body to the eyepiece to be observed. Since the device is equipped with a holding means for holding a straw tube with an object inside, the straw tube can be easily positioned by holding the straw tube in this holding means, and therefore, the straw tube can be easily positioned. The effect is that the fertilized eggs stored inside the cell can be easily observed.

[Brief explanation of the drawing]

1 to 3 are views showing one embodiment of this invention, in which FIG. 1 is a perspective view showing the state in which a straw tube observation magnifying glass is used, and FIG.
3 is a front view of a magnifying glass for observing a straw tube, and FIG. 4 is a perspective view showing a conventional example of a magnifying glass. DESCRIPTION OF SYMBOLS 1... Loupe for straw tube observation, 2... Straw tube, 3... Loupe body, 4... Straw tube fixing part, 6... Observation space, 7... Insertion port.

Claims (1)

[Scope of utility model registration request] A cylindrical loupe body with a built-in convex lens, an eyepiece provided on one side of the loupe body in the optical axis direction of the convex lens, and an eyepiece attached to the opposite side of the loupe body to the eyepiece to be observed. A magnifying glass for observing straw tubes, comprising a holding means for holding a straw tube with an object inside.