Inner sleeve for insemination duct

Abstract

The utility model provides an inner sleeve of a seminiferous duct, the inner sleeve of the seminiferous duct is hollow, and a seminal fluid output port is arranged at the bottom of a seminal fluid output end of the inner sleeve of the seminiferous duct; at the semen output port, the tangent plane of the bottom in the inner sleeve is arranged to be drop-shaped or wedge-shaped, the tip part of the drop-shaped or wedge-shaped tangent plane is higher than the semen output port, and the inclined plane of the drop-shaped or wedge-shaped tangent plane faces the semen output port. The inner sleeve of the seminiferous duct can be suitable for artificial insemination of various animals, can be sleeved on the seminiferous duct in use, can effectively distribute seminal fluid, prevents the seminal fluid from forming vortex at an outlet, prevents sperms in different directions from impacting and damaging, and greatly improves insemination efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of animal artificial insemination equipment, and in particular relates to an inner sleeve of the vas deferens. Background Art

[0002] The technology of artificial insemination is to dilute and package the collected boar semen, and then transport the semen to the sow's uterus through the vas deferens. This technology has effectively supported the rapid development of the pig industry. At present, the vas deferens is mainly divided into ordinary vas deferens (cervical insemination) and deep vas deferens (post-cervical insemination). The structure of the deep vas deferens is based on the ordinary vas deferens, with a thin inner cannula added. The inner cannula goes along the ordinary vas deferens cavity, reaches the cervix, and then continues forward through the uterine cervix to reach the uterine body. The semen in the insemination bottle / insemination bag goes along the inner cannula cavity into the uterine body. Under the action of uterine contraction, the sperm reaches the ampulla of the fallopian tube and combines with the egg to complete fertilization.

[0003] Sperm in an in vitro environment is a relatively delicate reproductive cell. It is very easy to lose vitality after being vibrated or impacted, resulting in inability to move and complete fertilization, thereby reducing the sow's breeding and conception rate, affecting the economic benefits of the pig farm. At present, the inner cannula of the deep insemination tube used in pig farms has the following defects:

[0004] 1. When semen enters the uterus through the inner cannula outlet from a wider diameter cavity in a short time, the liquid flow rate increases greatly. Although the designs of the inner cannula outlets of deep vas deferens of different brands are different, and the bottom of the vas deferens is flat or hollow, they still have the same defect, that is, it is easy to form a reverse impact on the high-speed flowing semen, damage the sperm structure, and lead to loss of sperm motility.

[0005] 2. The diameter of the semen outlet is small and the outlet direction is perpendicular to the direction of the lumen. The semen outlet of the inner cannula is easily adsorbed on the wall of the uterine cavity, preventing the semen from entering the uterus in time. Summary of the invention

[0006] In order to solve the above technical problems, the utility model provides a vas deferens inner sleeve.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A vas deferens inner sleeve, which is hollow, has a semen input port at the top and a semen output port at the bottom of the vas deferens inner sleeve; at the semen output port, the cut surface of the inner bottom of the inner sleeve is set to be a teardrop shape or a wedge shape or other similar semen output ports, the top part of the teardrop shape or the wedge shape is higher than the semen output port, and the inclined surface of the teardrop shape or the wedge shape faces the semen output port.

[0009] For the above-mentioned inner cannula of the vas deferens, preferably, the position of the semen output port is 0.5 to 1.2 cm away from the outer bottom of the inner cannula of the vas deferens. For the above-mentioned inner cannula of the vas deferens, preferably, the semen input port is also provided with a cover to block the semen input port.

[0010] As described above, the inner cannula of the vas deferens, preferably, the front end of the semen output end is configured to be bullet-shaped or threaded.

[0011] As described above, preferably, when in use, the vas deferens inner cannula can be used alone or together with a vas deferens inner sleeve with a sponge head.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides an inner sleeve of the vas deferens which can be suitable for artificial insemination of various animals. When in use, it can be sleeved on the vas deferens and can effectively divert semen and prevent semen from forming vortices at the outlet. The semen outlet flows smoothly, preventing sperm from being damaged by impact, and greatly improving the insemination efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a longitudinal section schematic diagram of an optimal embodiment of the vas deferens inner cannula.

[0015] Figure 2 for Figure 1 Schematic diagram of the direction of semen flow when the vas deferens cannula is in use.

[0016] Figure 3 The utility model is a longitudinal section schematic diagram of an optimal embodiment of the vas deferens inner cannula.

[0017] Figure 4 This is a schematic diagram of a preferred embodiment of the utility model when the vas deferens inner cannula is in use.

[0018] Figure 5 The figure is a schematic diagram of the flow direction of semen when the inner cannula of the vas deferens is in use in the prior art. DETAILED DESCRIPTION

[0019] The following examples are used to further illustrate the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and substance of the present invention, modifications or substitutions made to the present invention all belong to the scope of the present invention.

[0020] Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. Unless otherwise specified, all reagents used in the present method are of analytical grade or above.

[0021] Example 1

[0022] A vas deferens cannula, such as Figure 1 As shown, the inner sleeve 1 of the vas deferens is hollow, and a semen outlet 2 is provided at the bottom of the inner sleeve 1 of the vas deferens, i.e., the semen outlet end; at the semen outlet 2, a cut surface 3 of the inner bottom of the inner sleeve is set to be wedge-shaped, the top of the wedge is higher than the outlet, and the inclined surface of the wedge faces the semen outlet, and the head of the inner sleeve 1 of the vas deferens is the semen input port 4. A lid may be provided at the semen input port 4 to block the semen input port 4. When in use, the semen is filled from the semen input port 4, and the lid is closed to prevent the semen from flowing out, which is convenient for the insemination operation. When the insemination starts, the lid is opened. In this way, when the semen flows down the inner sleeve, Figure 2 As shown by the arrows, it can effectively divert semen, prevent semen from forming vortices at the outlet, prevent sperm from impacting and being damaged in different directions, prevent sperm motility from decreasing, and enhance sperm fertilization ability after insemination, which can potentially increase sow conception rate and piglet size.

[0023] Example 2

[0024] This embodiment is based on the embodiment 1, and the wedge shape is set to a water drop shape, such as Figure 3 Further, the front end of the semen output end is configured to be bullet-shaped or threaded.

[0025] When used, the above-mentioned intravas deferens can be used alone, or can be sleeved on various veterinary intravas deferens for use, such as Figure 4 As shown, the vas deferens with the sponge head 5 is inserted into the vas deferens inner cannula for application, and can be used for various animals, with a wide range of applications.

[0026] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any person skilled in the art can use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A vas deferens inner cannula, characterized in that: The inner sleeve of the vas deferens is hollow, with a semen input port at the top and a semen output port at the bottom of the inner sleeve of the vas deferens; at the semen output port of the sperm orifice, the cross section of the inner bottom of the inner sleeve is teardrop-shaped or wedge-shaped, the top of the teardrop-shaped or wedge-shaped portion is higher than the semen output port, and the inclined surface of the teardrop-shaped or wedge-shaped portion faces the semen output port.

2. The vas deferens inner cannula according to claim 1, characterized in that: The location of the semen outlet is 0.8 to 1.2 cm away from the outer bottom of the inner cannula of the vas deferens.

3. The vas deferens inner cannula according to claim 1, characterized in that: The semen input port is also provided with a cover which can block the semen input port.

4. The vas deferens inner cannula according to claim 1, characterized in that: The front end of the semen output end is configured as a bullet head or a threaded shape.

5. The vas deferens inner cannula according to claim 1, characterized in that: When in use, the vas deferens inner sleeve is used alone or together with the vas deferens inner sleeve with a sponge head.

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