CN114601598A - A new type of embryo transfer gun for cattle that can bend and protrude with the uterine horn - Google Patents

Abstract

The invention discloses a novel bovine embryo transfer gun which can be bent and stretched forward with the uterine horn, and relates to the field of embryo transfer guns. In the barrel hole, a piston is arranged in the thin tube of the culture medium, the gun core is arranged in the barrel, and also includes an inflatable part, a hollow steel needle and an extension conduit. The extension conduit is a hollow hose inside. The embryo is pushed into the extension catheter, and then the hollow steel needle pierces the piston to communicate with the lumen of the thin tube. The operator pushes the piston handle of the syringe to let the gas in the syringe enter the extension catheter through the hollow steel needle. The embryo is injected into the uterine horn of the cow, thus solving the problem that the gun core cannot inject the embryo into the uterus after the thin tube is connected to the extension catheter, and the operator does not need to grasp the front end of the uterine horn, which greatly reduces the difficulty of operation and facilitates operation. The use of personnel indirectly improves the conception rate.

Description

A novel bovine embryo transfer gun that can bend and protrude with the uterine horn

technical field

The invention belongs to the field of embryo transfer guns, and in particular relates to a novel bovine embryo transfer gun that can bend and protrude along with the uterine horn.

Background technique

Due to the high economic value of cattle, singleton animals, small number of litters, long reproductive cycle, and non-seasonal breeding, the whole process of embryo transfer can be performed non-surgically, and the donor cattle can be used repeatedly. Therefore, the cattle embryo transfer technology relatively fast development. This technology can greatly increase the number of offspring of high-quality cows, and has broad application prospects in the current situation of high-yielding dairy cows and purebred beef cattle in my country.

At present, when transferring embryos to cattle, operators often use a straight-line rigid embryo transfer gun. When performing embryo transfer, the operator needs to reach into the rectum of the cattle to grasp the uterus and lift the cervix to keep it straight so that the After the transfer gun enters, and further grasp the uterine horn to keep it straight, the transfer gun extends as far as possible to the front end (deep) of the uterine horn, and the embryo is injected into the uterus.

However, we have noticed that many operators have some problems in the operation of bovine artificial insemination, such as:

1. The embryo transfer gun is easy to pierce the cervix and bleed due to improper operation;

2. Because the uterus has a certain gravity, and it is very laborious to grasp in the rectum, the uterus is easily detached from the hand and other problems, which will directly reduce the conception rate, affect the fertility rate of the cow and the survival rate of the calf, thus giving the user the comfort of It is inconvenient to use.

Therefore, we propose a novel bovine embryo transfer gun that can bend and protrude with the uterine horn to solve the above problems.

SUMMARY OF THE INVENTION

Aiming at the problems of inconvenient operation, time-consuming and labor-intensive operation, easy to cause damage to cattle, and affecting the fertility rate of cattle and the survival rate of calves when operators use the insemination gun at present, the present invention provides an A new type of embryo transfer gun for cattle.

The solution adopted by the present invention to solve the technical problem is as follows: a novel bovine embryo transfer gun that can bend and protrude with the uterine horn, including a gun barrel, a gun core and a culture medium thin tube, and the culture medium thin tube is matched and installed in the gun barrel In the inner cylinder hole, a piston is arranged in the thin tube of the culture medium, the gun core is arranged in the gun barrel, and also includes an inflatable part, a hollow steel needle and an extension conduit, the extension conduit is an inner hollow hose, and the extension conduit is detachable. Installed on the inner end of the culture medium thin tube, the diameter of the hollow steel needle is smaller than the diameter of the piston, the hollow steel needle can slide along the gun barrel after the gun core is drawn out and pierce the piston to communicate with the inner cavity of the culture medium thin tube, so The inflatable part is connected with the outer end of the hollow steel needle, so that the gas can enter the culture medium thin tube through the airway of the hollow steel needle and push out the liquid containing the embryo.

As a preferred technical solution of the present invention, the inner end of the extension conduit is a blunt round head, and the inner diameter of the extension conduit is the same as the inner diameter of the culture medium thin tube.

As a preferred technical solution of the present invention, the connecting end of the extension conduit is provided with a butt pipe, and a culture medium thin tube is matched and inserted in the butt pipe.

As a preferred technical solution of the present invention, the inflatable member is a syringe, the gas outlet end of the syringe is provided with a butt joint, and the outer end of the hollow steel needle is matched and inserted into the butt joint.

As a preferred technical solution of the present invention, the piston is made of rubber.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention pushes the embryo in the thin tube into the extension catheter through the piston, and then pierces the piston with the hollow steel needle to communicate with the inner cavity of the thin tube, and the operator pushes the piston handle of the syringe to enter the gas in the syringe into the extension catheter through the hollow steel needle. In the uterus, the embryo in the extension catheter is driven into the uterine horn of the cow by gas, which solves the problem that the gun core cannot drive the embryo into the uterus after the thin tube is connected to the extension catheter, and the operator does not need to grasp the front end of the uterine horn. It greatly reduces the difficulty of operation, facilitates the use of the operator, and indirectly improves the conception rate.

2. In the present invention, by setting the extension catheter, the operator slowly puts the gun barrel, the culture medium thin tube and the extension catheter into the shallow part of the angle of the bovine uterus. Since the extension catheter is a flexible tube and the inner end is a blunt round head, the extension catheter is It can enter the deep part of the uterine horn along the curved angle of the uterine horn, avoid scratching the uterine corneal endometrium, causing damage and causing problems of reproductive tract diseases, so as to ensure the health of cattle and improve the implantation and pregnancy rate of embryos.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the state of using the gun core of the present invention;

Fig. 2 is the schematic diagram of the front view of the present invention using the hollow steel needle state;

Fig. 3 is a schematic view of enlarged structure at place A in Fig. 2 of the present invention;

4 is a schematic diagram of a three-dimensional enlarged structure of an extension catheter of the present invention;

Fig. 5 is the enlarged structural schematic diagram of the front section of the thin tube of the culture solution of the present invention;

6 is a schematic diagram of a three-dimensional enlarged structure of a hollow steel needle according to Embodiment 2 of the present invention;

FIG. 7 is a schematic front view of the hollow steel needle according to the third embodiment of the present invention.

In the picture: 1 gun barrel, 2 gun core, 3 culture medium thin tube, 301 piston, 41 butt pipe, 42 extension conduit, 5 hollow steel needle, 501 spiral thread, 502 positioning sleeve, 6 paired joints, 7 syringe.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Please refer to Fig. 1-7, the present invention provides a technical scheme of a novel bovine embryo transfer gun that can bend and protrude with the uterine horn:

Example 1:

1-5, it includes a gun barrel 1, a gun core 2 and a culture medium thin tube 3, the culture medium thin tube 3 is matched and installed in the inner end cylinder hole of the gun barrel 1, and the culture medium thin tube 3 is provided with a piston 301 , the piston 301 is made of rubber material, the gun core 2 is arranged in the gun barrel 1, the piston 301 is pushed by the gun core 2, and then the embryos in the culture medium thin tube 3 can be pushed into the extension conduit 42.

It also includes an inflatable piece, a hollow steel needle 5 and an extension conduit 42, the extension conduit 42 is an internally hollow hose, the inner end of the extension conduit 42 is a blunt round head, and the inner diameter of the extension conduit 42 is the same as the inner diameter of the culture medium thin tube 3 , the connecting end of the extension conduit 42 is installed with a butt pipe 41. By setting the butt pipe 41, the disassembly of the culture medium thin tube 3 can be facilitated for later replacement and disinfection. The butt pipe 41 is matched with a culture medium thin pipe 3 , by setting the extension catheter 42, the operator slowly puts the gun barrel 1, the culture medium thin tube 3 and the extension catheter 42 into the shallow part of the bovine uterine horn, because the extension catheter 42 is a flexible tube and the inner end is a blunt round head, Then, the extending catheter 42 can enter the deep part of the uterine horn along the cervix, so as to avoid damage to the endometrium, cause reproductive tract diseases, and improve the embryo implantation and pregnancy rate of cattle.

The diameter of the hollow steel needle 5 is smaller than the diameter of the piston 301. After the gun core 2 is drawn out, the hollow steel needle 5 can slide along the gun barrel 1 and pierce the piston 301 to communicate with the inner cavity of the culture medium thin tube 3. The inflatable piece is connected to the hollow steel needle 5. The outer end is connected so that the gas can enter the culture medium thin tube 3 through the airway of the hollow steel needle 5 and push out the liquid containing the embryos. The outer end is matched and inserted in the butt joint 6, and the hollow steel needle 5 pierces the piston 301 to communicate with the inner cavity of the culture medium thin tube 3, and then the operator pushes the piston 301 handle of the syringe 7 to pass the gas in the syringe 7 through the hollow steel The needle 5 enters the extension catheter 42, and then relies on the gas to drive the embryos in the extension catheter 42 into the uterine horn of the cow, thereby solving the problem that the traditional culture medium thin tube 3 is connected to the extension catheter 42. The gun core 2 cannot drive the embryos into the uterus. It does not require the operator to grasp the front end of the uterine horn, which greatly reduces the difficulty of operation, facilitates the use of the operator, and indirectly improves the conception rate.

In specific use, a novel bovine embryo transfer gun of the present invention that can bend forward with the uterine horn, firstly, the operator slowly puts the gun barrel 1, the culture medium thin tube 3 and the extension catheter 42 into the bovine vagina. The extension catheter 42 is a flexible tube with a blunt inner end, and then the extension catheter 42 can be bent along the uterine horn into the deep part of the uterine horn, and then the operator inserts the gun core 2 into the gun barrel 1, and uses the gun core 2 to push the piston 301, then the embryo in the culture medium thin tube 3 can be pushed into the extension conduit 42, then the gun core 2 is pulled out, and the hollow steel needle 5 is inserted into the gun barrel 1 and the hollow steel needle 5 is pushed, and the hollow steel needle 5 is pierced. The piston 301 is communicated with the inner cavity of the culture medium thin tube 3, and then the operator pushes the piston 301 handle of the syringe 7 to enter the gas in the syringe 7 into the extension conduit 42 through the hollow steel needle 5, and then rely on the gas to blast the embryo in the extension conduit 42. into the uterine horn of the cow, and finally the gun barrel 1, the culture medium thin tube 3 and the extension catheter 42 are slowly taken out to complete the embryo transfer operation.

Embodiment 2:

On the basis of the first embodiment, the similarities between this embodiment and the first embodiment will not be repeated, but the differences are as follows: as shown in FIG. 501, the operator can rotate the hollow steel needle 5, and pierce the piston 301 while rotating, which further facilitates the operation of the operator.

Embodiment three:

On the basis of Embodiment 1, the similarities between this embodiment and Embodiment 1 will not be repeated, but the differences are as follows: As shown in FIG. 502 is matched with the inner wall of the barrel 1. By setting the positioning sleeve 502, the hollow steel needle 5 can be accurately pierced from the axis of the piston 301, so as to avoid the problem of the hollow steel needle 5 being skewed.

Embodiment 4:

On the basis of the first embodiment, the similarities between the present embodiment and the first embodiment will not be repeated, but the differences are as follows: the outer cover of the gun barrel 1 is provided with a protective cover, the protective cover is a silicone cover, and the inner end of the protective cover is provided with a protective cover. The head is a blunt round head. By setting a protective cover, when the steel needle enters the cervix, the rigid barrel 1 will cause damage to the cervix and protect the body of the cow.

Claims (5)

1. The utility model provides a can be along with crooked anteextension's of uterus novel ox embryo transplantation rifle, including a gun section of thick bamboo, rifle core and culture solution tubule, the matching of culture solution tubule is installed in the barrel head of a gun section of thick bamboo inner downthehole, is provided with the piston in the culture solution tubule, and the rifle core sets up its characterized in that in a gun section of thick bamboo: still including aerifing piece, cavity steel needle and extension pipe, it is inside hollow hose to extend the pipe, and extension pipe detachable installs on the inner of culture solution tubule is overhead, the diameter of cavity steel needle is less than the diameter of piston, and the cavity steel needle can follow the barrel and slide and pierce through piston and culture solution tubule inner chamber intercommunication after the rifle core is taken out, it is connected with the outer end of cavity steel needle and makes gaseous air can get into the interior liquid release that will contain the embryo of culture solution tubule through the air flue of cavity steel needle to aerify the piece.

2. The new bovine embryo transfer gun capable of advancing with the bending of uterine horn as claimed in claim 1, wherein: the inner end of the extension catheter is an obtuse round head, and the inner diameter of the extension catheter is the same as that of the culture solution tubule.

3. The new type bovine embryo transfer gun capable of advancing with the bending of uterine horn according to any one of claims 1-2, wherein: the butt joint pipe is installed to the link of extension pipe, and the matching cartridge has the culture solution tubule in the butt joint pipe.

4. The new bovine embryo transfer gun capable of advancing with the bending of uterine horn as claimed in claim 1, wherein: the inflatable part is an injector, the air outlet end of the injector is provided with a butt joint, and the outer end of the hollow steel needle is inserted into the butt joint in a matching manner.

5. The new bovine embryo transfer gun capable of advancing with the bending of uterine horn as claimed in claim 1, wherein: the piston is made of rubber.

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