SU897224A1 - Device for transplanting horn cattle embryo - Google Patents

Description

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The invention relates to animal husbandry and can be used for the transplantation of embryos, in particular cattle.

The known device for transplantation of cattle embryos, consisting of three plastic tubes - outer, middle and inner. The outer tube is inserted into the vagina all the way into the upper arch. The middle tube with igb11 at the end is inserted into the outer tube, and, under control, the vaginal arch and the wall of the horn of the uterus are punctured rectally. Carbon dioxide is injected through the lateral branch into the cavity of the horn. After the uterus expands, the inner tube is introduced into the lumen of the middle tube, the balloon is compressed, the physiological medium with the embryo is injected into the uterine horn cavity 1.

This device does not allow toMHocTb to control the end of the needle in the uterine horn lumen. The use of carbon dioxide to fill the uterus in order to increase the lumen is completely unexplored from the point of view of its influence — the uterine mucosa, uterine secretion and its motility. The embryo is inserted in the immediate vicinity of the injection site, so the embryo can be in the focus of inflammation caused by endometrial injury, which adversely affects the further fate of the embryo.

The aim of the invention is to ensure the embryo is introduced into a zone remote from the puncture site for better survival, as well as preventing the puncture of the opposite wall of the uterine horn.

The goal is achieved by the fact that the device is equipped with a flexible catheter with a cannula at the distal end, the catheter is placed in the inner tube, the outer tube has a sharp end for puncture, and the inner tube has a spherical muffled tube.

There is a hole in the zone in which a side opening is located for the exit of the catheter, with the axis of the hole directed toward the plugged end at an angle to the axis of the tubes.

FIG. 1 shows a device for grafting cattle embryos; in fig. 2 - stiletto device.

The device contains an outer rigid tube 1, which has one sharp end and a limiting plate - shield 2 at the other end. The second rigid tube 3 (the middle also has a sharp end, and the other end is pressed into the body of a hollow cylinder, on which internal thread 5 is cut to secure the working device of the third inner tube 6. The inner tube b is 5–8 mm longer than the middle tube 3 has a spherical end 7, which is extended to SS mm from the sharp end of the middle tube, and on the border of the exit from it, the inner tube has a side opening 8 with an outlet angle U-TZO. The other end of the inner tube is pressed into the rod with a thickening 9 at one end and a thread 10 to the other Gom, the rod is provided a spring 11, which move LIMIT {) - 1chiaaet -vtulka one side 12 with an external thread for fixing it to the floor cis other side - the nut

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13) fastened by a thread on the rod 9 itself. This device allows the inner tube 6 under the influence of the spring 11 to be constantly extended from the lumen of the middle tube 3, and with a slight load on the spherical end 7 the tube 6 easily enters the lumen of the sharp end of the middle tube 3 - needles, providing the latter with a puncture resistance control function.

The catheter Ui is made, for example, of fluoroplastic, has a stable horse 15 at the distal end, which provides a tight connection with a syringe.

In addition, the stylet includes 16 for an external hollow tube.

The device works as follows.

After performing a low sacral epidural anesthesia with an external tube 1 with the stylet 16, the skin and muscle layer of the urocipient is punctured in the pelvic region in the direction of the horns of the uterus. After removing the stylet 16 into the channel of the outer tube 1, the second 3 and third 6 tubes, mounted with the sleeve 12, are inserted. Then a flexible catheter k is inserted into the channel of the third tube 6, in which a small volume of (0.1) mm embryo.

The operator with one hand through the wall of the direct intestine fixes the horn of the uterus, with the other hand makes the puncture of the uterine wall with the sharp end of the second tube 3When the end of the tube enters the uterus due to the tension of the spring 11, the spherical end 7 of the third tube 6 is pushed out and with its round end moves the opposite stent off uterus 5-8 mm. At the same time, the channel of the third tube opens into the cavity of the uterine horn. With a slight movement, a catheter is inserted into the uterine cavity by a 50-80 mm tube, and using a syringe mounted on the connecting device, the embryo is pushed into the uterine horn by a portion of the medium, i

The device provides accurate

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monitoring of its penetration into the lumen of the uterus horn and improvement of the conditions for the development of the embryo, since the latter is introduced into the zone remote from the puncture site of the horn of the uterus, does not cause injury to the mucous membrane of the cervix and uterine horns, thereby ensuring favorable conditions for the survival of the transplanted embryo.

Claims (1)

Invention Formula A device for transferring bovine embryos containing tubes of different lengths into each other — outer, middle with a sharp end for puncture and inner, which is so as to ensure that the embryo is introduced into an area remote from the puncture site for the best its survival and prevention of puncture of the opposite wall of the horn of the uterus, the device is equipped with a flexible catheter with a cannula at the distal end, the catheter is placed in the inner tube, the outer tube has a sharp end for puncture, and the tube has a spherical closure end, in which zone is arranged 58972246 , 0-ro-rona Sources of INFORMATION, g: -LsTo; -r-g. p According to „-aGo“:; l: 4 g towards the muffled end under R J-i tviq68 10 197-200. angle 105-130 to the axis of the tubes. Fertility, 196b, 10.1E / i. . (/ iVt.