JP2505746Y2 - Livestock fertilized egg transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a domestic fertilized egg transplant device. More specifically, it relates to a livestock fertilized egg transplantation device that has a strong so-called “brush” despite its small diameter and has excellent operability.

[Problems to be solved by conventional techniques and devices]

Fertilized eggs are collected from meat-specific species that produce high-quality beef,
It is effective to increase the production of meat resources by using the fertilized egg transplantation technique to make twins by transplanting a plurality of fertilized eggs to a fertilized cow.

The main cost of producing beef cattle is the maintenance and management of cows. For this reason, the economic efficiency is extremely high if two litters can be obtained from one litter from one litter.

As a method for producing twins, there is a simple method by hormone administration, but this method is difficult to control the number of ovulations, and there are many accidents such as having more than 3 babies and miscarriages
Due to its lack of certainty, it has not yet been implemented generally.

Therefore, at present, the twin production method by transplanting two eggs is exclusively used. There was a surgical transplantation method in this twin production method, but in recent years, since the technology of transplanting fertilized eggs by the cervical cervical method has been established and the conception rate has improved, the conventional surgical transplantation method is not operated. The technical shift has been made to the artificial transplantation method.

The non-surgical transplant method includes a method in which one fertilized egg is transplanted into each uterine horn and a method in which two fertilized eggs are transplanted into one uterine horn. Therefore, the method of transplanting one egg into each bilateral uterine horn is common.

As a device used in such a transplantation method, a catheter made of a synthetic resin has been conventionally known, but this catheter has a problem that it is inferior in operability because it damages the cervical canal or is difficult to insert. On the other hand, if it is thin, it is soft and difficult to handle.

Therefore, a method has been adopted in which a guide wire is inserted into one hole of a synthetic resin catheter having two to three holes to reinforce it, but this method still has a weak strain and has a problem of operability.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a livestock fertilized egg transplantation device in which the above-mentioned drawbacks of the prior art are eliminated. That is, an object of the present invention is to provide a livestock fertilized egg transplantation device which is strong in strain and excellent in operability despite its small diameter.

[Means for solving the problem]

The domestic animal fertilized egg transplantation device of the present invention has a synthetic resin egg introduction tube having one or two holes and one end having a hemispherical head and sealed with a synthetic resin or metal stopper, and the egg introduction tube. A stainless sheath tube that accommodates the egg introduction tube in a state where both ends of the tube are exposed, and a synthetic resin or rubber membrane that covers substantially all of the egg introduction tube and the stainless sheath tube. One or two egg outlets are formed near the tube plug, and the diameter of the stainless steel sheath tube portion after the synthetic resin or rubber membrane coating is 2 to 5 mm. I am trying.

〔Example〕

Hereinafter, a domestic fertilized egg transplant device of the present invention (hereinafter referred to as an egg transplant device) will be described with reference to the accompanying drawings.

FIG. 1 is an axial cross-sectional explanatory view of an embodiment of the egg transplant device of the present invention.

In FIG. 1, (A) is an egg transplant device according to an embodiment of the present invention, and the egg transplant device (A) is an egg introduction tube (1) made of synthetic resin or rubber, a stopper (2), It is composed of a stainless sheath tube (3) and a synthetic resin or rubber membrane (4).

The egg introduction tube (1) is a hollow tube made of synthetic resin such as polyurethane or vinyl chloride or rubber such as silicone and having one or two holes. The number of holes may be one as shown in FIG. 2 or two as shown in FIGS. It is preferable to use an egg introduction tube having a hole and inject the eggs using two syringes. The inner diameter of the egg introduction tube (1) is usually 0.15 considering the size of the fertilized egg to be introduced.
The outer diameter is such that it can be accommodated in a stainless steel sheath tube, which will be described later, and is usually 0.5 to 4 mm.

At one end of the egg introduction tube (1), a stopper (2) made of a synthetic resin such as polyvinyl chloride, polycarbonate, acrylic or metal is sealed. The plug (2) is used to facilitate the passage of the catheter through the cervical canal and has a hemispherical head (6) for this purpose.

In the vicinity of the stopper (2), one or two egg discharge holes (5) are formed. The diameter of the egg discharge hole (5) is
Considering the size of the fertilized egg, it is usually about 0.5 to 2 mm. The egg discharge hole (5) may be formed in the egg introducing tube (1) in advance before coating the membrane (4) described later, or the egg and the egg introducing tube (1) may be penetrated after coating the membrane. You may pierce it.

(3) is a stainless steel sheath tube for accommodating the egg introduction tube (1), and the wall thickness is usually about 0.15 to 1 mm, and the outer diameter is 2 to 5 mm after coating the membrane described later. The size is set so that In the present invention, the egg introduction tube (1) is housed in the stainless sheath tube (3) with its both ends exposed. In this case, one end having the stopper (2) should not block the egg discharge hole (5), and the other end should be taken out from the stainless sheath tube (3) to the extent that an egg input passage or a syringe can be attached. is there.

In this way, the egg introduction tube (1) is replaced with the stainless sheath tube (3).
As a result of adopting the configuration of being housed inside, a so-called strong catheter can be obtained. Therefore, the operation of transplanting one fertilized egg into the bilateral uterine horns via the cervix becomes very easy.

(4) is an egg introduction tube (1) and a stainless sheath tube (3)
Is a film with a thickness of about 0.5 to 1 mm covering almost the entire
The membrane (4) is made of synthetic resin such as polyvinyl chloride or Teflon, or rubber such as silicone rubber.
The “substantially whole” means that at least the head (6) of the stopper (2) and the periphery of the opening portion on the side opposite to the stopper (2) are excluded from the egg introduction tube (1). Head (6) of stopper (2)
The reason for this is that if this area is covered, the catheter passability will be reduced. When the membrane (4) is covered after the egg discharge hole (5) is formed in the egg introduction tube (1), avoid the portion of the egg discharge hole (5) to cover the membrane (4). Needs to be covered. The membrane (4) is obtained, for example, by covering the egg introduction tube (1) and the stainless sheath tube (3) with a polyvinyl chloride tube having a large heat shrinkability, and shrinking the tube with a hair dryer or hot water. Can be formed.

In the present invention, the egg introduction tube (1) is housed in the stainless sheath tube (3) as described above, and the whole is covered with the synthetic resin or rubber membrane (4). This is because the introduction tube (1) is fixed in the stainless sheath tube (3) and the egg transplant device can easily pass through the cervical canal.

In the present invention, the diameter of the stainless sheath tube (3) after being coated with the synthetic resin film (4) is 2 to 5 mm. In the present invention, the diameter is set to 5 mm or less to solve the conventional problem that the diameter is too large. Further, if the diameter is less than 2 mm, it is difficult to store the egg introduction tube (1), which is not preferable.

The egg discharge hole (5) may be covered with a film made of a synthetic resin on the exterior and then penetrated through the film and the egg introduction tube. In any case, the egg discharge hole (5) must not be covered with the membrane (4).

[Effect of device]

In the egg transplantation device of the present invention, since the egg introduction tube made of synthetic resin is housed in the stainless sheath tube and the whole is covered with the membrane made of synthetic resin, it is possible to obtain a catheter having a strong rigidity.

Further, a round plug having a rounded tip is provided at one end of an egg introduction tube having 1 to 2 holes, which does not damage the internal genital organs such as the uterus, cervix, and oviduct, and further in the axial direction near the plug. By forming 1 to 2 holes at a right angle to, it is possible to prevent the problem that the cervical mucus closes the egg discharge hole.

In the present invention, the egg introduction tube is housed in a stainless steel sheath tube with both ends exposed, and the whole is covered with a synthetic resin or rubber film. By choosing the thickness of the membrane appropriately and providing the material itself and the softness that comes from the thickness, it is possible to prevent damage to the internal genital organs when passing through the cervical canal.

[Brief description of drawings]

FIG. 1 is an axial cross-sectional explanatory view of an embodiment of the egg transplant device of the present invention, and FIGS. 2 to 5 are cross-sectional explanatory views of various egg introduction tubes. (Symbols in the drawing) (1): Egg introduction tube (2): Stopper (3): Stainless steel sheath tube (4): Membrane (5): Egg discharge hole

Claims (1)

(57) [Scope of utility model registration request] 1. A synthetic resin egg introduction tube sealed with a synthetic resin or metal stopper having one or two holes and one end having a hemispherical head, and both ends of the egg introduction tube. A stainless sheath tube for accommodating the egg introduction tube in a released state, and a membrane made of synthetic resin or rubber covering substantially the entire egg introduction tube and the stainless sheath tube, near the stopper of the egg introduction tube. Has one or two egg outlets, and the diameter of the stainless steel sheath tube portion after the synthetic resin or rubber film coating is 2 to 5 mm, the fertilized domestic animal egg Transplant device.