CN217628309U

CN217628309U - External fertilization egg-peeling device

Info

Publication number: CN217628309U
Application number: CN202122952871.1U
Authority: CN
Inventors: 余柯达; 师帅; 包云; 柴娟; 毛佳婷; 高辉
Original assignee: Jinhua People 's Hospital
Current assignee: Jinhua People 's Hospital
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-10-21
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses an in vitro fertilization egg stripping device, which comprises a handheld pressing device, an exhaust device positioned in the handheld pressing device and an egg stripping needle inserted at the lower part of the handheld pressing device; the handheld pressing device comprises a pressing rod, a pressing cap positioned on the upper portion of the pressing rod, an egg stripper cap, an egg stripper shell, a hand pressing plate positioned on the upper portion of the egg stripper shell and protruding outwards, a rubber connector and an interface of an inserting rubber connector. The utility model relates to an external fertilization shells ovum ware has an inclosed space in long and narrow upper end in inside, reciprocates in this space through long and thin exhaust rod, makes the continuous ovum needle of shelling of this space lower extreme can produce accurate suction, has improved the work efficiency of external fertilization technique greatly and has reduced oocyte or the possibility that the embryo lost.

Description

External fertilization egg-peeling device

Technical Field

The utility model relates to the technical field of medical sanitary appliances for reproductive medicine, in particular to an in vitro fertilization egg stripper.

Background

The removal of the oocytes or granulocytes surrounding the fertilized egg, known as egg stripping, is one of the most routine procedures in the human assisted reproductive technology laboratory, and the difficulty and time-consuming nature of this procedure is related to the final embryo quality and clinical pregnancy outcome. At present, there is ripe supporting ovum ware of shelling to soft plastics article's ovum needle, but does not have supporting accurate suction to hard plastics and glassware's ovum needle of shelling at present and shell the ovum ware, and it has following defect in the use: the side sacculus of the egg stripper is extruded by a thumb or the sacculus is extruded by a pressure bar to generate suction force, and the generated suction force cannot be accurately controlled due to the large size of the sacculus, so that the oocyte or embryo is easily lost due to the overlarge suction force. Accordingly, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external fertilization shells ovum ware to solve the technical problem who exists among the above-mentioned prior art.

In order to achieve the above purpose, the utility model adopts the following specific technical scheme:

an in vitro fertilization egg stripping device comprises a handheld pressing device, an exhaust device positioned in the handheld pressing device and an egg stripping needle inserted at the lower part of the handheld pressing device; the handheld pressing device comprises a pressing rod, a pressing cap positioned on the upper portion of the pressing rod, an egg peeling device cap, an egg peeling device shell, a pressing plate positioned on the upper portion of the egg peeling device shell and protruding outwards, a rubber connector and an interface of an inserting rubber connector.

Preferably, the shell of the egg peeler consists of a shell I and a shell II, and the shell I and the shell II are connected through threads.

Preferably, the bottom of the pressing rod is provided with a limiting plate, the limiting plate is a circular thin plate, the diameter of the limiting plate is slightly larger than the diameter of the threaded interface of the egg stripper cap, and the pressing rod can be prevented from being separated from the egg stripper.

Preferably, the exhaust device comprises a chamber I, a chamber II, a chamber III, an exhaust rod, a spring and a rubber sealing ring.

Preferably, the spring is disposed in the chamber I at a lower portion of the pressing rod, and provides an upward elastic force to the pressing rod, and the lower portion of the pressing rod is connected to the exhaust rod through a connecting rod.

Preferably, the rubber sealing rings are positioned at the bottom of the chamber II and the top of the chamber III, the rubber sealing rings can enable the chamber III to form a closed space, the exhaust rod penetrates through a central hole of the rubber sealing ring and enters the chamber III, the exhaust rod is enabled to move up and down in the chamber III under the action of pressing of the pressing cap and the elastic force of the spring, air is exhausted or sucked, and suction force and pushing force are generated and used for stripping the oocytes or granulocytes around the fertilized eggs.

Preferably, the diameter of the center hole of the rubber sealing ring is slightly smaller than that of the exhaust rod, so that a sealing structure is formed; the diameter of the rubber sealing ring is larger than the diameter of the I-shaped threaded interface of the shell of the egg peeler, and the rubber sealing ring is extruded by the I-shaped threaded interface of the shell of the egg peeler to form a closed structure.

Preferably, the egg stripping needle is connected with the interface through a rubber joint.

The utility model has the advantages of it is following:

the utility model relates to an external fertilization shells ovum ware has a long and narrow upper end inclosed space in inside, reciprocates in this space through long and thin exhaust rod, makes the continuous ovum needle of shelling of this space lower extreme can produce accurate suction, has improved the work efficiency of external fertilization technique greatly and has reduced oocyte or the possibility that the embryo lost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional structure view of the present invention.

The symbols in the figure illustrate: 1. a pressing lever; 2. an egg stripper cap; 3. peeling the shell I of the egg device; 4. peeling the shell II of the egg device; 5. a rubber joint; 6. a spring; 7. a rubber seal ring; 8. a chamber I; 9. a chamber II; 10 chamber III; 11. pressing the cap; 12. a limiting plate; 13. an exhaust rod; 21. egg stripping needles; 31. pressing a hand plate; 41. an interface.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the utility model provides an external fertilization ovum-dissecting device, which comprises a handheld pressing device, an exhaust device positioned inside the handheld pressing device and an ovum-dissecting needle 21 inserted into the lower part of the handheld pressing device. The handheld pressing device comprises a pressing rod 1, a pressing cap 11 positioned on the upper portion of the pressing rod 1, an egg stripper cap 2, an egg stripper shell, a pressing plate 31 positioned on the upper portion of the egg stripper shell and protruding outwards, a rubber joint 5 and an interface 41 inserted with the rubber joint 5. The egg stripper shell consists of an egg stripper shell I3 and an egg stripper shell II4, wherein the egg stripper shell I3 and the egg stripper shell II4 are connected through threads. The bottom of the pressing rod 1 is provided with a limiting plate 12.

The exhaust device comprises a cavity I8, a cavity II 9, a cavity III10, an exhaust rod 13, a spring 6 and a rubber sealing ring 7, wherein the spring 6 is arranged in the cavity I8 and positioned at the lower part of the pressing rod 1 and can provide upward elastic force for the pressing rod 1, and the lower part of the pressing rod 1 is connected with the exhaust rod 13 through a connecting rod. The rubber sealing ring 7 is located at the bottom of the chamber II 9 and the top of the chamber III10, the rubber sealing ring 7 enables the chamber III10 to form a closed space, and the exhaust rod 13 penetrates through a center hole of the rubber sealing ring 7 and enters the chamber III10. By pressing the pressing cap 11 and the spring 6, the exhaust rod 13 moves up and down in the chamber III10, and exhausts or sucks air, thereby generating suction and pushing force for stripping off the oocyte or the granular cells around the fertilized egg.

The egg stripping needle 21 is connected with the interface 41 through a rubber joint 5. The limiting plate 12 is a circular thin plate, the diameter of the limiting plate is larger than the diameter of the spring and the diameter of the threaded interface of the egg stripper cap, and the limiting plate can fix the spring and prevent the pressing rod from falling out of the egg stripper. The diameter of the central hole of the rubber sealing ring 7 is slightly smaller than that of the exhaust rod 13, so that a sealing structure is formed.

The shell I3 and the shell II4 are connected through threads, the diameter of the sealing ring 7 is larger than that of a threaded interface of the shell I3, and the rubber sealing ring 7 is extruded by the threaded interface of the shell I3 to form a closed structure.

When the device is used, one end of the ovum peeling needle 21 (sterile) is inserted into the rubber joint 5, the external fertilization ovum peeling device is held by the right hand, the other end of the ovum peeling needle 21 is aligned to the oocytes with granular cells around, the thumb of the right hand is used for pressing the pressing cap 11 at the upper end of the external fertilization ovum peeling device, the thumb is released to generate suction force, the oocytes are sucked into the ovum peeling needle 21, the pressing cap 11 is pressed to discharge the oocytes, and the steps are repeated to remove the granular cells around the oocytes.

The beneficial effects of the utility model are that:

the utility model relates to an external fertilization shells ovum ware has an inclosed space in long and narrow upper end in inside, reciprocates in this space through long and thin exhaust rod, makes the continuous ovum needle of shelling of this space lower extreme can produce accurate suction, has improved the work efficiency of external fertilization technique greatly and has reduced oocyte or the possibility that the embryo lost.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. An in vitro fertilization egg stripping device is characterized by comprising a handheld pressing device, an exhaust device positioned in the handheld pressing device and an egg stripping needle (21) inserted at the lower part of the handheld pressing device; the handheld pressing device comprises a pressing rod (1), a pressing cap (11) positioned on the upper portion of the pressing rod (1), an egg peeling device cap (2), an egg peeling device shell, a pressing plate (31) positioned on the upper portion of the egg peeling device shell and protruding outwards, a rubber joint (5) and an interface (41) of an inserting rubber joint (5).

2. The in vitro fertilization egg remover according to claim 1, wherein the egg remover shell consists of an egg remover shell I (3) and an egg remover shell II (4), and the egg remover shell I (3) and the egg remover shell II (4) are connected through threads.

3. The in vitro fertilization ovum dissector according to claim 1, wherein a limiting plate (12) is arranged at the bottom of the pressing rod (1), the limiting plate (12) is a circular thin plate, and the diameter of the limiting plate is slightly larger than the diameter of the threaded interface of the ovum dissector cap (2), so that the pressing rod can be prevented from being removed from the ovum dissector.

4. The in vitro fertilization ovum dissector according to claim 1, wherein the exhaust device comprises a chamber I (8), a chamber II (9), a chamber III (10), an exhaust rod (13), a spring (6) and a rubber sealing ring (7).

5. The in vitro fertilization ovum dissector according to claim 4, wherein the spring (6) is disposed in the chamber I (8) and located at the lower part of the pressing rod (1) for providing upward elastic force to the pressing rod (1), and the lower part of the pressing rod (1) is connected with the air exhaust rod (13) through a connecting rod.

6. The in vitro fertilization ovum dissector according to claim 4, wherein the rubber sealing rings (7) are positioned at the bottom of the chamber II (9) and at the top of the chamber III (10), the rubber sealing rings (7) can enable the chamber III (10) to form a closed space, the exhaust rod (13) penetrates through a central hole of the rubber sealing rings (7) and enters the chamber III (10), and the exhaust rod (13) moves up and down in the chamber III (10) under the action of the elastic force of the pressing cap (11) and the spring (6) through pressing to exhaust or suck air, so that suction and thrust are generated for dissecting the oocytes or granulocytes around fertilized eggs.

7. The in vitro fertilization ovum dissector according to claim 6, wherein the diameter of the central hole of the rubber sealing ring (7) is slightly smaller than that of the exhaust rod (13) to form a sealing structure; the diameter of the rubber sealing ring (7) is larger than the diameter of the threaded interface of the shell I (3) of the egg peeler, and the rubber sealing ring (7) is extruded by the threaded interface of the shell I (3) of the egg peeler to form a closed structure.

8. The in vitro fertilization ovum dissector according to claim 1, wherein the ovum dissector needle (21) is connected with the port (41) through a rubber joint (5).