Embryo transplantation device for test tube baby

Abstract

The invention relates to the technical field of surgical instruments, in particular to an embryo transplantation device for a test tube baby, which comprises a syringe, an inner tube and an outer tube, one end of the inner tube is connected with one end of the syringe, the syringe is used for sucking an embryo into the inner tube, the inner tube is inserted into the outer tube, and one end of the inner tube away from the syringe is provided with an openable plugging sheet. The plugging sheet is formed by splicing a plurality of fan-shaped sheets, the plugging sheet is opened by swinging towards the direction of the injector when the injector sucks an embryo into the inner tube, the plugging sheet is opened by swinging towards the direction deviating from the injector when the injector discharges the embryo from the inner tube, and the plugging sheet is in a closed state in the process that the inner tube extends into the uterus so as to prevent the embryo from being discharged from the inner tube; and the plugging sheet is in a closed state after the embryo in the inner tube is discharged out of the inner tube so as to prevent the embryo from being sucked back into the inner tube. The embryo transfer device solves the technical problem that an embryo transfer device in the prior art is easy to suck out an embryo too early and is easy to suck back after embryo injection.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to an embryo transplanter for test-tube babies. Background Art

[0002] At present, the use of in vitro fertilization to breed test-tube babies is a relatively mature technology that can help families who cannot conceive naturally to have children. Test-tube babies are to take eggs and sperm outside the body for in vitro fertilization, and then after the early embryos are formed, the embryos are transplanted into the woman's uterus to breed into babies in the woman's uterus. When the embryo is transplanted into the woman's uterus, it is often necessary to use an embryo transplanter. The embryo transplanter includes a syringe, an inner tube and an outer tube. The inner tube is connected to the head of the syringe, and the outer tube is sleeved on the outside of the inner tube. When using the embryo transplanter, the embryo needs to be sucked into the inner tube first, and then the inner tube is extended into the woman's uterus, and the embryo in the inner tube is injected into the woman's uterus using a syringe.

[0003] When the existing embryo transplanter is inserted into the female uterus, it may be sucked out of the inner tube before reaching the designated position due to the pressure difference between the inside and outside of the uterus, thereby causing the embryo transplantation to fail. In addition, after the embryo injection is completed, it is easy for the embryo to be sucked back into the inner tube, which will also cause the embryo transplantation to fail. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention proposes an embryo transfer device for in vitro fertilization to solve the technical problems in the prior art that embryos are easily sucked out prematurely and easily sucked back after embryo injection.

[0005] The embryo transplanter for test tube babies of the present invention adopts the following technical solution: An embryo transplanter for test-tube babies comprises a syringe, an inner tube and an outer tube, one end of the inner tube is connected to one end of the syringe, the syringe is used to suck the embryo into the inner tube, the inner tube is inserted into the outer tube, and the end of the inner tube away from the syringe is provided with a sealing piece that can be opened and closed, the sealing piece is formed by splicing a plurality of fan-shaped pieces, the sealing piece swings open toward the syringe when the syringe sucks the embryo into the inner tube, and swings open in a direction away from the syringe when the syringe discharges the embryo from the inner tube, the sealing piece is in a closed state during the process of the inner tube extending into the uterus to prevent the embryo from being discharged from the inner tube, and the sealing piece is in a closed state after the embryo in the inner tube is discharged from the inner tube to prevent the embryo from being sucked back into the inner tube.

[0006] Furthermore, a response block is provided at one end of the inner tube away from the syringe, and the response block is used to indicate the position of the inner tube extending into the uterus. The response block is a hollow tube, and the blocking piece is arranged inside the response block.

[0007] Furthermore, an elastic ring is coaxially provided on the inner wall of one end of the response block, the cross-section of the elastic ring is corrugated, the blocking piece is arranged inside the elastic ring, and the blocking piece is arranged on the response block through the elastic piece, and the elastic ring includes a first corrugated segment and a second corrugated segment symmetrically arranged about the blocking piece, and the cross-sections of the first corrugated segment and the second corrugated segment are both arc-shaped with the convex surface facing the inside of the inner tube.

[0008] Furthermore, a plurality of deformation holes are spaced apart in the circumferential direction of the first corrugated segment and the second corrugated segment, respectively, so that the first corrugated segment and the second corrugated segment can be elastically deformed when the blocking piece is swung open.

[0009] Furthermore, the response block includes a first pipe segment and a second pipe segment, the first pipe segment and the second pipe segment have the same outer diameter, the inner diameter of the first pipe segment is smaller than the inner diameter of the second pipe segment, and the elastic ring is arranged on the inner wall of the second pipe segment, and the inner diameter of the elastic ring is smaller than the inner diameter of the first pipe segment.

[0010] Furthermore, the elastic ring and the response block are made of the same material, which is metal.

[0011] Furthermore, the response block is integrally injection-molded in the inner tube, and the inner diameter of the inner tube is the same as the inner diameter of the first tube section of the response block.

[0012] Furthermore, a connecting sleeve is provided at one end of the outer tube close to the syringe, and the connecting sleeve is used to connect with an endoscope component.

[0013] Furthermore, a connecting boss is provided in the middle of the outer tube.

[0014] Furthermore, one end of the inner tube away from the syringe extends out of the outer tube, and the blocking piece is located at the portion of the inner tube extending out of the outer tube.

[0015] The beneficial effects of the present invention are as follows: an embryo transplanter for test-tube babies of the present invention is provided with a blocking piece at one end of the inner tube away from the syringe, when the embryo is sucked into the inner tube by the syringe, because the embryo is located in the nutrient solution, under the negative pressure of the syringe, the nutrient solution will flush the various fan-shaped pieces of the blocking piece toward the syringe, so that the embryo enters the inner tube; after the embryo is sucked into the inner tube, the syringe is stopped from being pulled, and the blocking piece is reset under the action of its own elastic force, thereby blocking the end of the inner tube away from the syringe, so as to prevent the embryo in the inner tube from being sucked out of the inner tube. When the syringe is pushed to discharge the embryo from the inner tube, the nutrient solution pushes the various fan-shaped pieces of the blocking piece in the direction away from the syringe, so that the embryo enters the uterus, and after the embryo is discharged, the syringe is stopped from being pushed, and the blocking piece is reset and blocks the inner tube, so as to prevent the embryo in the uterus from being sucked into the inner tube, thereby improving the success rate of embryo transplantation.

[0016] Furthermore, a response block and an elastic ring are arranged in the inner tube, and the blocking piece is arranged in the elastic ring. The elastic ring can expand the opening angle of each fan-shaped piece of the blocking piece, thereby not hindering the passage of the embryo. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0018] Figure 1 It is a three-dimensional schematic diagram of an embodiment of an embryo transplanter for in vitro fertilization of the present invention; Figure 2 An exploded view of an embodiment of an embryo transplanter for in vitro fertilization according to the present invention; Figure 3 A side view of an embodiment of an embryo transplanter for in vitro fertilization according to the present invention; Figure 4 for Figure 3 Middle AA section view; Figure 5 for Figure 4 A magnified view of the part B in the middle; Figure 6 for Figure 4 Another state diagram of ; Figure 7 for Figure 6 Enlarged view of part C in the middle.

[0019] In the figure: 100, syringe; 200, inner tube; 201, joint; 210, response block; 211, elastic ring; 212, blocking piece; 213, sealing ring; 300, outer tube; 301, connecting boss; 303, connecting sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] An embodiment of an embryo transplanter for test tube babies of the present invention is as follows: Figures 1 to 7As shown, the embryo transfer device for in vitro fertilization comprises a syringe 100, an inner tube 200 and an outer tube 300, one end of the inner tube 200 is connected with a joint 201, the inner tube 200 is connected to one end of the syringe 100 through the joint 201, and the syringe 100 is used to suck the embryo into the inner tube 200. The inner tube 200 is inserted into the outer tube 300, and the end of the outer tube 300 close to the syringe 100 is provided with a connecting sleeve 303, and the connecting sleeve 303 is used to connect with the endoscope component, and the middle part of the outer tube 300 is provided with a connecting protrusion 301. When in use, the inner tube 200 is first separated from the outer tube 300, and then the outer tube 300 is inserted into the vagina through an endoscope, so that the connecting boss 301 in the middle of the outer tube 300 passes through the cervical opening; then the embryo is sucked into the inner tube 200 using a syringe 100, and then the inner tube 200 is inserted into the outer tube 300, and the inner tube 200 enters the uterus through the outer tube 300. After reaching the appropriate depth, the syringe 100 is pushed to push the embryo in the inner tube 200 into the uterus.

[0022] In the present invention, the end of the inner tube 200 away from the syringe 100 is provided with a sealing piece 212 that can be opened and closed. The sealing piece 212 is a circular structure formed by a plurality of fan-shaped pieces. The sealing piece 212 is made of silicone. The sealing piece 212 is in a closed state when the inner tube 200 is inserted into the uterus to prevent the embryo from being discharged from the inner tube 200. Figure 5 The state shown; the blocking piece 212 is in a closed state after the embryo in the inner tube 200 is expelled from the inner tube 200 to prevent the embryo from being sucked back into the inner tube 200. Each fan-shaped piece can swing relative to each other, so that when the syringe 100 sucks the embryo into the inner tube 200, each fan-shaped piece of the blocking piece 212 swings toward the syringe 100 to open the blocking piece 212, and when the syringe 100 discharges the embryo from the inner tube 200, each fan-shaped piece of the blocking piece 212 swings away from the syringe 100 to open the blocking piece 212. When the syringe 100 is used to suck the embryo into the inner tube 200, since the embryo is located in the nutrient solution, under the negative pressure of the syringe 100, the nutrient solution will push open the fan-shaped pieces of the blocking piece 212 toward the syringe 100, so that the embryo enters the inner tube 200, as shown in FIG. Figure 7The state shown; when the embryo is sucked into the inner tube 200, the syringe 100 is stopped from being pulled, and the blocking piece 212 is reset under the action of its own elastic force, thereby blocking the end of the inner tube 200 away from the syringe 100 to prevent the embryo in the inner tube 200 from being sucked out of the inner tube 200. When the syringe 100 is pushed to discharge the embryo from the inner tube 200, the nutrient solution pushes away the fan-shaped pieces of the blocking piece 212 in the direction away from the syringe 100, so that the embryo enters the uterus. When the embryo is discharged, the syringe 100 is stopped from being pushed, and the blocking piece 212 is reset and blocks the inner tube 200 to prevent the embryo in the uterus from being sucked into the inner tube 200.

[0023] In this embodiment, a response block 210 is provided at one end of the inner tube 200 away from the syringe 100, and the response block 210 is used to indicate the position of the inner tube 200 inserted into the uterus, so that it is convenient for doctors to judge the position of the inner tube 200 inserted into the uterus. The response block 210 is a hollow tube, and the blocking piece 212 is arranged inside the response block 210. In this embodiment, an elastic ring 211 is coaxially provided on the inner wall of one end of the response block 210, and the cross section of the elastic ring 211 is corrugated. The blocking piece 212 is arranged inside the elastic ring 211, and the blocking piece 212 is arranged on the response block 210 through the elastic piece. The elastic ring 211 includes a first corrugated section and a second corrugated section symmetrically arranged about the blocking piece 212, the first corrugated section is located on the side of the second corrugated section close to the syringe 100, and the cross sections of the first corrugated section and the second corrugated section are both arc-shaped with the convex surface facing the inside of the inner tube 200. A plurality of deformation holes are spaced apart in the circumferential direction of the first corrugated section and the second corrugated section, respectively, so that the first corrugated section and the second corrugated section can be elastically deformed when the blocking piece 212 is swung open.

[0024] The present invention fixes each sector of the blocking piece 212 on the inner wall of the elastic ring 211, and the blocking piece 212 is located at the connection position of the first corrugated section and the second corrugated section. When each sector of the blocking piece 212 swings, the first corrugated section and the second corrugated section will be deformed respectively. Compared with the method of directly connecting the blocking piece 212 to the inner wall of the inner tube 200, this embodiment can expand the swing angle of each sector, so that the blocking piece 212 is opened to a greater extent, which can reduce the obstruction to the embryo. In this embodiment, the elastic ring 211 and the response block 210 are made of the same material, both of which are metal. By setting the elastic ring 211 to a metal material, the blocking piece 212 can be quickly reset. A sealing ring 213 is provided between the outer side of the elastic ring 211 and the inner wall of the inner tube 200, thereby preventing the nutrient solution from passing through the deformation holes of the first corrugated section and the second corrugated section from the outer periphery of the elastic ring 211.

[0025] In this embodiment, the response block 210 includes an integrally arranged first tube segment and a second tube segment, the first tube segment and the second tube segment have the same outer diameter, the inner diameter of the first tube segment is smaller than the inner diameter of the second tube segment, the elastic ring 211 is arranged on the inner wall of the second tube segment, and the inner diameter of the elastic ring 211 is smaller than the inner diameter of the first tube segment. The response block 210 is integrally injection molded in the inner tube 200, and the inner diameter of the inner tube 200 is the same as the inner diameter of the first tube segment of the response block 210. One end of the inner tube 200 away from the syringe 100 extends out of the outer tube 300, and the blocking piece 212 is located at the portion of the inner tube 200 extending out of the outer tube 300.

[0026] The present invention provides a process for using an embryo transplanter for in vitro fertilization: first use an endoscope to observe the cervical opening, then use a sterile cotton swab to clean and disinfect the mucus, and then insert the outer tube 300 into the vagina through the endoscope, so that the connecting protrusion 301 in the middle of the outer tube 300 passes through the cervical opening and stops inside the uterus. Then use a syringe 100 to suck the embryo into the inner tube 200. Since the embryo is located in the nutrient solution, the nutrient solution will be sucked into the inner tube 200 together with the embryo. When the embryo and the nutrient solution are sucked in, the various sector pieces of the blocking piece 212 will be impacted by the nutrient solution and will swing toward the syringe 100, and the first corrugated section of the elastic ring 211 will be concave, so that the various sector pieces of the blocking piece 212 are fully opened, such as Figure 7 The state shown in the figure allows the embryo to smoothly enter the inner tube 200. After the embryo is sucked in, the elastic ring 211 and the blocking piece 212 are reset, and the blocking piece 212 blocks the inner tube 200. Figure 5 The state shown prevents the embryo from being sucked out of the inner tube 200 in advance due to the pressure difference between the inside and outside of the uterine cavity during the process of inserting the inner tube 200 into the uterus.

[0027] When the inner tube 200 is inserted into the uterus through the outer tube 300 and reaches a suitable depth, the syringe 100 is pushed to inject the embryo in the inner tube 200 into the uterus. During the injection, the blocking piece 212 is swung by the top thrust of the culture solution, and the second corrugated section of the elastic ring 211 is concave, so that each fan-shaped piece of the blocking piece 212 swings open along the direction of the nutrient solution outflow. After the injection is completed, the elastic ring 211 and the blocking piece 212 are reset, and the blocking piece 212 blocks the inner tube 200 to prevent the nutrient solution and the embryo from being sucked back into the inner tube 200, thereby improving the transplantation success rate. Finally, the inner tube 200 and the outer tube 300 are removed from the uterus together, and the embryo transplantation is completed.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An embryo transplanter for in vitro fertilization, comprising a syringe (100), an inner tube (200) and an outer tube (300), wherein one end of the inner tube (200) is connected to one end of the syringe (100), the syringe (100) is used to suck the embryo into the inner tube (200), and the inner tube (200) is inserted into the outer tube (300), characterized in that: An end of the inner tube (200) facing away from the syringe (100) is provided with a sealing piece (212) that can be opened and closed. The sealing piece (212) is formed by a plurality of fan-shaped pieces being joined together. When the syringe (100) sucks the embryo into the inner tube (200), the sealing piece (212) swings open in a direction toward the syringe (100), and when the syringe (100) discharges the embryo from the inner tube (200), the sealing piece (212) swings open in a direction away from the syringe (100). When the inner tube (200) is extended into the uterus, the sealing piece (212) is in a closed state to prevent the embryo from being discharged from the inner tube (200). After the embryo in the inner tube (200) is discharged from the inner tube (200), the sealing piece (212) is in a closed state to prevent the embryo from being sucked back into the inner tube (200).

2. The embryo transplanter for test tube baby according to claim 1, characterized in that: An end of the inner tube (200) facing away from the syringe (100) is provided with a response block (210), and the response block (210) is used to indicate the position of the inner tube (200) extending into the uterus. The response block (210) is in the shape of a hollow tube, and the blocking piece (212) is arranged inside the response block (210).

3. The embryo transplanter for test tube baby according to claim 2, characterized in that: An elastic ring (211) is coaxially arranged on the inner wall of one end of the response block (210); the cross section of the elastic ring (211) is corrugated; the blocking piece (212) is arranged inside the elastic ring (211); the blocking piece (212) is arranged on the response block (210) via the elastic piece; the elastic ring (211) comprises a first corrugated section and a second corrugated section which are symmetrically arranged with respect to the blocking piece (212); the cross sections of the first corrugated section and the second corrugated section are both arc-shaped with the convex surface facing the inside of the inner tube (200).

4. The embryo transplanter for test tube baby according to claim 3, characterized in that: A plurality of deformation holes are respectively provided at intervals in the circumferential direction of the first corrugated section and the second corrugated section, so that the first corrugated section and the second corrugated section can be elastically deformed when the blocking piece (212) is swung open.

5. The embryo transplanter for test tube baby according to claim 4, characterized in that: The response block (210) comprises a first pipe section and a second pipe section, the first pipe section and the second pipe section have the same outer diameter, the inner diameter of the first pipe section is smaller than the inner diameter of the second pipe section, the elastic ring (211) is arranged on the inner wall of the second pipe section, and the inner diameter of the elastic ring (211) is smaller than the inner diameter of the first pipe section.

6. The embryo transplanter for test tube baby according to claim 5, characterized in that: The elastic ring (211) and the response block (210) are made of the same material, which is metal.

7. The embryo transplanter for test tube baby according to claim 6, characterized in that: The response block (210) is integrally injection-molded in the inner tube (200), and the inner diameter of the inner tube (200) is the same as the inner diameter of the first tube section of the response block (210).

8. The embryo transplanter for in vitro fertilization according to any one of claims 1 to 7, characterized in that: A connecting sleeve (303) is provided at one end of the outer tube (300) close to the syringe (100), and the connecting sleeve (303) is used to connect to an endoscope component.

9. The embryo transplanter for test tube baby according to claim 8, characterized in that: A connecting protrusion (301) is provided in the middle of the outer tube (300).

10. The embryo transplanter for test tube baby according to claim 9, characterized in that: One end of the inner tube (200) away from the syringe (100) extends out of the outer tube (300), and the blocking piece (212) is located at the portion of the inner tube (200) that extends out of the outer tube (300).

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