A sheep non-surgical embryo transplantation instrument set

Abstract

The invention discloses a sheep non-surgical embryo transplantation instrument set, which relates to the field of surgical instruments for animal husbandry. The instrument set comprises a catheter, a cervical dilator, a grabber driving mechanism and N grabbers. The cervical dilator is arranged in the catheter and can slide in the catheter. The invention extends an elastic grabber and the end of the catheter into the sheep vagina, and then relies on the elastic force of a spring to slide a sliding sleeve toward the end of the catheter. The sliding sleeve squeezes three elastic grabbers during the movement, so that the three elastic grabbers are closed with each other and hook the end of the sheep's cervical canal, and then the catheter can be pulled backward to pull the cervical canal outward, so that the staff can extend the cervical dilator through the catheter into the sheep's cervical canal for dilation, so that the staff can extend the embryo transplant tube into the uterus and insert the embryo into the sheep's uterus. The instrument is not only simple in structure and easy to operate, but also can reduce damage to the sheep's body and improve the conception rate, thereby meeting the use needs of users.

Description

Technical Field

[0001] The invention belongs to the field of surgical instruments for animal husbandry, and in particular relates to a sheep non-surgical embryo transplantation instrument set. Background Art

[0002] Embryo transplantation in sheep is a technology that involves removing multiple early embryos with excellent genetic traits from the uterus of a few excellent ewes (donor sheep) that have undergone superovulation, and transplanting them into the corresponding parts of another group of ewes (recipient sheep) to produce donor sheep offspring.

[0003] The basic procedures mainly include: selection of donors and recipients, superovulation of donors, synchronization of recipients, embryo flushing, recovery, embryo inspection and transplantation.

[0004] Traditional sheep embryo transplantation requires the sheep to be secured with its abdomen facing upwards, the wool on its abdomen to be cut clean, the sheep's skin to be cut open, the uterus to be found, and the embryo to be inserted into the uterus. This series of operations is not only cumbersome but also risky. The sheep can easily die from wound infection.

[0005] Therefore, we propose a sheep non-surgical embryo transfer instrument kit to solve the above problems. Summary of the invention

[0006] Traditional sheep embryo transplantation requires that the sheep's abdomen be secured upward, the wool on the sheep's abdomen be sheared clean, and then the sheep's skin be cut open to find the uterus, and then the embryo be inserted into the sheep's uterus. This series of operations is not only troublesome to operate, but also risky. The sheep may easily die from wound infection. The present invention provides a sheep non-surgical embryo transplantation instrument kit.

[0007] The solution adopted by the present invention to solve its technical problem is: a sheep non-surgical embryo transplantation instrument kit, including a catheter, a cervical dilator, a grabber driving mechanism and N grabbers, the cervical dilator is arranged in the catheter and can slide in the catheter, the N grabbers are arranged around the circumference of the catheter at the end of the catheter, and the grabber driving mechanism is sleeved on the catheter and can drive the N grabbers to open or close together.

[0008] As a preferred technical solution of the present invention, the grab hook is an elastic grab hook 1, the tail end of the elastic grab hook 1 is installed at the end of the catheter, the end of the elastic grab hook 1 is a sharp end, and the angle between the long rod of the elastic grab hook and the catheter is 5-10 degrees.

[0009] As a preferred technical solution of the present invention, the grab hook driving mechanism includes a sliding sleeve and a fixed ring. The sliding sleeve is arranged on the catheter. N sliding grooves are opened around the inner wall of the sliding sleeve. The tail section of the elastic grab hook is matched and arranged in the sliding groove. The fixed ring is installed on the catheter and is located on the rear side of the sliding sleeve. A spring is provided on the catheter. The spring is installed between the sliding sleeve and the fixed ring to make the sliding sleeve slide toward the end of the catheter to control the N elastic grab hooks to close and hook the cervical canal. The sliding sleeve is connected to a pulling member for pulling the sliding sleeve to slide toward the tail of the catheter.

[0010] As a preferred technical solution of the present invention, the grab hook is a hard grab hook, the tail end of the hard grab hook is hingedly mounted on the catheter, and the end of the hard grab hook is a sharp end.

[0011] As a preferred technical solution of the present invention, the grab hook driving mechanism includes a second slide sleeve and a connecting rod, the connecting rod is installed at the tail end of the rigid grab hook, an angle of 90-120 degrees is formed between the connecting rod and the long rod of the rigid grab hook, a hinge seat is hingedly installed at the connection between the connecting rod and the rigid grab hook, the hinge seat is installed on the catheter, a tension spring is installed between the long rod of the connecting rod and the catheter to make N rigid grab hooks close and hook the cervical canal, the second slide sleeve is sleeved on the catheter and located on the rear side of the rigid grab hook, a connecting rope is installed between the second slide sleeve and the connecting rod, and a pulling member is connected to the second slide sleeve to pull the second slide sleeve to slide toward the tail of the catheter.

[0012] As a preferred technical solution of the present invention, the pulling member includes a pull rope and a pull ring, the pull ring is arranged at the tail end of the catheter, one end of the pull rope is connected to the first or second sliding sleeve, and the other end of the pull rope is connected to the pull ring.

[0013] As a preferred technical solution of the present invention, the number of the grab hooks is at least three, and the three grab hooks are equally arranged on the catheter along the outer edge of the catheter.

[0014] As a preferred technical solution of the present invention, a wire sleeve is installed on the sliding sleeve, and a pull rope passes through the wire sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention inserts an elastic hook and the end of a catheter into the sheep's vagina, and then relies on the elastic force of a spring to slide a sleeve toward the end of the catheter. The sleeve squeezes three elastic hooks during movement, so that the three elastic hooks are closed with each other and hook the end of the sheep's cervical canal, and then the catheter can be pulled backward to pull the cervical canal outward, so that the staff can insert a cervical dilator through the catheter into the sheep's cervical canal for dilation, so that the staff can insert an embryo transfer tube into the uterus and insert the embryo into the sheep's uterus. The device is not only simple in structure and easy to operate, but also can reduce damage to the sheep's body and improve the conception rate, thereby meeting the user's use needs.

[0017] 2. The present invention provides a pull rope and a pull ring, and by pulling the pull ring outward, the slide sleeve 1 moves toward the tail end of the catheter under the action of the pull rope, and then no longer squeezes the elastic hook 1. Under the action of the elastic hook 1, the elastic hook 1 opens to each other and no longer hooks the end of the sheep's cervical canal. The opening or closing of the elastic hook 1 can be controlled according to the body position of the sheep, which further facilitates the use of the user and reduces the damage to the sheep.

[0018] 3. The present invention provides a spring, and then when the pull rope is not tightened, the elastic force of the spring causes the sliding sleeve to automatically slide toward the end of the catheter, so that the three elastic hooks are automatically closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

[0020] Figure 2 It is a front view structural schematic diagram of Embodiment 1 of the present invention;

[0021] Figure 3 It is a schematic diagram of a front cross-sectional structure of a first embodiment of the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 This is a schematic diagram of the front view structure of Embodiment 3 of the present invention;

[0024] Figure 6 This is a schematic diagram of the front view of the structure of the second elastic grab hook in the fourth embodiment of the present invention when it is opened;

[0025] Figure 7 This is a schematic diagram of the front view structure of the second closed elastic grab hook of the fourth embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the enlarged left-side cross-section structure of the connecting ring of the fifth embodiment of the present invention.

[0027] In the figure: 1 catheter, 21 elastic grab hook 1, 22 rigid grab hook, 23 elastic grab hook 2, 31 sliding sleeve 1, 3101 slide groove, 32 sliding sleeve 2, 33 sliding sleeve 3, 4 cervical dilator rod, 51 fixing ring, 52 spring, 53 pull rope, 54 pull ring, 55 wire sleeve, 61 tension spring 1, 62 connecting rod, 63 hinge seat, 64 connecting rope, 71 conical top ring, 72 tension spring 2, 73 mounting ring, 8 push rod, 91 connecting ring, 92 outer stop rod, 93 locking screw. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1-8 The present invention provides a technical solution for a sheep non-surgical embryo transplantation instrument set:

[0030] Embodiment 1:

[0031] according to Figure 1-4 As shown, it includes a catheter 1, a cervical dilator rod 4, a grabber driving mechanism and three grabbers. The cervical dilator rod 4 is arranged in the catheter 1 and can slide in the catheter 1. The three grabbers are arranged around the circumference of the catheter 1 at the end of the catheter 1. In this embodiment, the number of grabbers is at least three, and the three grabbers are equally arranged on the catheter 1 along the outer edge of the catheter 1. The grabber is an elastic grabber 21, and the tail end of the elastic grabber 21 is installed at the end of the catheter 1. The end of the elastic grabber 21 is a sharp end, and the angle between the long rod of the elastic grabber and the catheter 1 is 5-10 degrees.

[0032] The grab hook driving mechanism includes a sliding sleeve 31 and a fixing ring 51. The sliding sleeve 31 is sleeved on the catheter 1. Three sliding grooves 3101 are opened around the inner wall of the sliding sleeve 31. The tail section of the elastic grab hook 21 is matched and arranged in the sliding groove 3101. The fixing ring 51 is installed on the catheter 1 and is located at the rear side of the sliding sleeve 31. A spring 52 is sleeved on the catheter 1. The spring 52 is installed between the sliding sleeve 31 and the fixing ring 51 to make the sliding sleeve 31 slide toward the end of the catheter 1 to control N elastic grab hooks 21 to close and hook the cervical canal. By extending the elastic grab hook 21 and the end of the catheter 1 into the sheep vagina, the spring 52 is used to control the end of the catheter 1 to close the cervical canal. The elastic force of 52 makes the sliding sleeve 31 slide toward the end of the catheter 1. The sliding sleeve 31 squeezes the three elastic hooks 21 during the movement, so that the three elastic hooks 21 are closed with each other and hook the end of the sheep's cervical canal, and then the catheter 1 can be pulled backward to pull the cervical canal outward, so that the staff can pass the cervical dilator 4 through the catheter 1 and insert it into the sheep's cervical canal for dilation, so that the staff can insert the embryo transfer tube into the uterus and insert the embryo into the sheep's uterus. The device is not only simple in structure and easy to operate, but also can reduce damage to the sheep's body and improve the conception rate, thereby meeting the user's needs.

[0033] A pulling member is connected to the sliding sleeve 31 for pulling the sliding sleeve 31 to slide toward the tail end of the catheter 1. The pulling member includes a pull rope 53 and a pull ring 54. The pull ring 54 is arranged at the tail end of the catheter 1. One end of the pull rope 53 is connected to the sliding sleeve 31, and the other end of the pull rope 53 is connected to the pull ring 54. By arranging the pull rope 53 and the pull ring 54, the pull ring 54 is pulled outward, and then the sliding sleeve 31 is moved toward the tail end of the catheter 1 under the action of the pull rope 53, and then the elastic grab hook 21 is no longer squeezed. Under the action of the elastic grab hook 21, it opens to each other and no longer hooks the end of the cervical canal of the sheep. Then, the opening or closing of the elastic grab hook 21 can be controlled according to the body position of the sheep, which is further convenient for users to use and reduces the damage to the sheep.

[0034] When used specifically, the sheep non-surgical embryo transplantation instrument set of the present invention is firstly lifted up so that the sheep's tail is upward, then the sheep's vagina is opened using a sheep dilator, then the elastic hook 21 and the end of the catheter 1 are inserted into the sheep's vagina, and the pull ring 54 is pulled outward, and then the sliding sleeve 31 is moved toward the tail of the catheter 1 under the action of the pull rope 53, so that the three elastic hooks 21 are opened, and then when the three elastic hooks 21 move to the end of the cervical canal, the pull ring 54 is no longer pulled, and the sliding sleeve 31 slides toward the end of the catheter 1 by relying on the elastic force of the spring 52, and the sliding sleeve 31 squeezes the three elastic hooks 21 during the movement. , so that the three elastic hooks 21 are closed to each other and hook the end of the sheep's cervical canal, and then the catheter 1 can be pulled backward to pull the cervical canal outward, and then the staff will pass the cervical dilator rod 4 through the catheter 1 and insert it into the sheep's cervical canal for dilation, and then the staff will pass the embryo transfer tube through the catheter 1 and insert it into the uterus to insert the embryo into the sheep's uterus, and finally pull the pull ring 54 outward again, and then under the action of the pull rope 53, the sliding sleeve 31 moves toward the tail of the catheter 1, and then the elastic hook 21 is no longer squeezed. Under the action of itself, the elastic hook 21 opens to each other and no longer hooks the end of the sheep's cervical canal, and the catheter 1 is taken out of the sheep's body.

[0035] Embodiment 2:

[0036] Based on the first embodiment, the same points as the first embodiment will not be repeated here, and the differences are as follows: Figure 1 As shown, a wire sleeve 55 is installed on the sliding sleeve 1 31 , and a pull rope 53 passes through the wire sleeve 55 . By providing the wire sleeve 55 , the pull rope 53 can be supported and guided.

[0037] Embodiment three:

[0038] Based on the first embodiment, the same points as the first embodiment will not be repeated here, and the differences are as follows: Figure 5 As shown, in addition to the elastic grab hook 21 in the first embodiment, the grab hook is a hard grab hook 22, and the end of the hard grab hook 22 is a sharp end.

[0039] The grab hook driving mechanism can also be other structures, for example: the grab hook driving mechanism includes a sliding sleeve 32 and a connecting rod 62, the connecting rod 62 is installed at the tail end of the rigid grab hook 22, and an angle of 90-120 degrees is formed between the connecting rod 62 and the long rod of the rigid grab hook 22. A hinge seat 63 is hingedly installed at the connection between the connecting rod 62 and the rigid grab hook 22, and the hinge seat 63 is installed on the catheter 1. A tension spring 61 is installed between the long rod of the connecting rod 62 and the catheter 1 to make the three rigid grab hooks 22 close and hook the cervical canal. The sliding sleeve 32 is sleeved on the catheter 1 and is located on the rear side of the rigid grab hook 22. A connecting rope 64 is installed between the sliding sleeve 32 and the connecting rod 62. The sliding sleeve 32 is connected to a pull rope 53 for pulling the sliding sleeve 32 to slide toward the tail of the catheter 1.

[0040] In specific use, the sheep non-surgical embryo transplantation instrument set of the present invention is firstly lifted up so that the sheep's tail is upward, and then the sheep's vagina is opened using a sheep dilator, and then the hard grabbing hook 22 and the end of the catheter 1 are inserted into the sheep's vagina, and the pull ring 54 is pulled outward, and then the sliding sleeve 232 is moved toward the tail of the catheter 1 under the action of the pull rope 53, so that the three hard grabbing hooks 22 are opened, and then when the three hard grabbing hooks 22 move to the end of the cervical canal, the pull ring 54 is no longer pulled, and the three hard grabbing hooks 22 are opened by relying on the tension of the tension spring 1 61. They are closed to each other and hook the end of the sheep's cervical canal, and then the catheter 1 can be pulled backward to pull the cervical canal outward, and then the staff will insert the cervical dilator rod 4 through the catheter 1 into the sheep's cervical canal for dilation, and then the staff will insert the embryo transfer tube through the catheter 1 into the uterus to implant the embryo into the sheep's uterus, and finally pull the pull ring 54 outward again, and then under the action of the pull rope 53, the sliding sleeve 232 moves toward the tail of the catheter 1, and then the three hard hooks 22 are opened, no longer hooking the end of the sheep's cervical canal, and the catheter 1 is taken out of the sheep's body.

[0041] Embodiment 4:

[0042] Based on the first embodiment, the same points as the first embodiment will not be repeated here, and the differences are as follows: Figure 6 and Figure 7 As shown, the grab hook driving mechanism can also be other structures, for example: the grab hook driving mechanism includes a sliding sleeve 33 and a mounting ring 73, the sliding sleeve 33 is sleeved on the catheter 1, the mounting ring 73 is installed on the catheter 1 and is located on the rear side of the sliding sleeve 33, the catheter 1 is sleeved with a tension spring 2 72, the tension spring 2 72 is installed between the sliding sleeve 33 and the mounting ring 73, and a push rod 8 is installed on the sliding sleeve 33, and the length of the push rod 8 is greater than the length of the catheter 1.

[0043] In addition to the elastic grab hook 1 21 in the first embodiment, the grab hook can also be an elastic grab hook 2 23, the tail end of the elastic grab hook 2 23 is installed on the sliding sleeve 3 33, the end of the elastic grab hook 2 23 is a sharp end, and the tail section of the elastic grab hook 2 23 is concave to form an arc-shaped protrusion.

[0044] The end of the catheter 1 is provided with a conical top ring 71, which matches the arc-shaped protrusion of the elastic hook 23. Its function is: by pushing the push rod 8 inward, the sliding sleeve 33 drives the movement of the three elastic hooks 23. When the arc-shaped protrusion of the elastic hook 23 contacts the conical top ring 71, the conical top ring 71 will make the three elastic hooks 23 open synchronously, so that the elastic hook 23 closes and hooks the end of the sheep's cervical canal. When the push rod 8 is no longer pushed, the sliding sleeve 33 is moved to the installation position by relying on the tension of the tension spring 2 72. The ring 73 moves, and then the arc-shaped protrusion of the elastic hook 23 no longer contacts the conical top ring 71, and then the three elastic hooks 23 close to each other and hook the end of the sheep's cervical canal. At the same time, the tension spring 2 72 continues to contract, and then the user does not need to pull the catheter 1. Relying on the pulling force of the tension spring 2 72, the elastic hook 23 automatically stretches the cervical canal outward, so that the staff can pass the cervical dilator 4 through the catheter 1 and insert it into the sheep's cervical canal for dilation, so that the staff can insert the embryo transfer tube into the uterus and insert the embryo into the sheep's uterus.

[0045] The tail section of the catheter 1 is provided with a connecting ring 91, and four outer blocking rods are installed around the outer ring of the connecting ring 91. The four outer blocking rods are in contact with the vulva of the sheep. By providing four outer blocking rods 92, the catheter 1 is prevented from sliding into the sheep's body and the catheter 1 is restricted, so that the operator does not need to continuously hold the catheter 1. The operator can operate with both hands, further reducing the difficulty of operation.

[0046] Embodiment five:

[0047] Based on the fourth embodiment, the same points as the fourth embodiment will not be repeated here, and the differences are as follows: Figure 8 As shown, the connecting ring 91 can slide axially along the catheter 1 , a threaded hole is provided in the connecting ring 91 , a locking screw 93 is threadedly connected in the threaded hole, and the locking screw 93 presses against the catheter 1 to fix the position of the connecting ring 91 .

[0048] By adjusting the position of the connecting ring 91 , the position of the connecting ring 91 can be adjusted according to the depth of the catheter 1 entering the sheep's body, so that the four outer stop rods 92 can contact the sheep's vulva, further improving the practicality of the device.

Claims

1. A sheep non-surgical embryo transplantation instrument kit, characterized in that: It comprises a catheter, a cervical dilator rod, a grabber driving mechanism and N grabbers, wherein the cervical dilator rod is arranged in the catheter and can slide in the catheter, the N grabbers are arranged around the end of the catheter along the circumference of the catheter, and the grabber driving mechanism is sleeved on the catheter and can drive the N grabbers to open or close together; The grab hook driving mechanism includes a sliding sleeve three and a mounting ring, the sliding sleeve three is sleeved on the catheter, the mounting ring is mounted on the catheter and is located at the rear side of the sliding sleeve three, the catheter is sleeved with a tension spring two, the tension spring two is mounted between the sliding sleeve three and the mounting ring, a push rod is mounted on the sliding sleeve three, the length of the push rod is greater than the length of the catheter, the tail end of the elastic grab hook two is mounted on the sliding sleeve three, the end of the elastic grab hook two is a sharp end, the tail section of the elastic grab hook two is concave to form an arc-shaped protrusion, the end of the catheter is sleeved with a conical top ring, and the conical top ring matches the arc-shaped protrusion of the elastic grab hook two; The tail section of the catheter is provided with a connecting ring, and four outer blocking rods are installed around the outer ring of the connecting ring. The connecting ring can slide along the axial direction of the catheter. A threaded hole is opened in the connecting ring, and a locking screw is threadedly connected to the threaded hole. The locking screw presses against the catheter to fix the position of the connecting ring.

2. The sheep non-surgical embryo transfer instrument kit according to claim 1, characterized in that: The number of the grab hooks is at least three, and the three grab hooks are equally arranged on the catheter along the outer edge of the catheter.

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