CN114469288A

CN114469288A - Embryo transfer device with adjustable

Info

Publication number: CN114469288A
Application number: CN202111612720.XA
Authority: CN
Inventors: 李平
Original assignee: Guangzhou Pinzhi Medical Device Co ltd
Current assignee: Guangzhou Pinzhi Medical Device Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-13

Abstract

The invention discloses an adjustable embryo transplantation device, which comprises a hollow handle, a guide catheter, an adjusting piece and a traction wire, wherein a groove which is not communicated with an inner cavity of the handle is formed in the outer wall of the handle, and strip-shaped sawtooth parts which are oppositely arranged are arranged on two opposite side walls of the groove along the length direction of the groove; the guide catheter is of a plastic hollow tube body structure with openings at two ends, the arrangement direction of the guide catheter and the sawtooth part is the same and the guide catheter is communicated with the inner cavity of the handle, a traction channel is arranged between the inner wall and the outer wall of the guide catheter, and the traction channel is arranged at the same side of the groove; the adjusting piece is movably arranged in the groove and is provided with two elastic ribs which are oppositely arranged, and the elastic ribs are provided with bulges meshed with the sawtooth parts; one end of the traction wire is fixed on the adjusting piece, and the other end of the traction wire is arranged in the traction channel and fixedly arranged on the guide catheter, so that the guide catheter can be bent towards one side with the traction channel by the traction wire, and the bending degree of the guide catheter can be directionally and quantitatively adjusted.

Description

Embryo transfer device with adjustable

Technical Field

The invention relates to the technical field of medical instruments, in particular to an adjustable embryo transplantation device.

Background

Embryo transfer is a crucial link in ART (assisted reproductive technology), and during embryo transfer, the time of surgery is one of the key factors affecting embryo development and survival. Therefore, how to help doctors quickly establish the embryo transfer passage in the operation so that the embryo can be transferred into the body of the patient in the shortest possible time has become a hot point for the breakthrough of the auxiliary reproduction field.

At present, there are two main types of guide catheters for embryo transplantation in the prior art, one is a straight tube, which is used for general patients and is difficult to smoothly enter the cervix of a patient aiming at patients with more complicated uterine anatomy; one is a pre-shaped guiding catheter, which can be used for the uterus with complicated anatomical morphology, however, the bending angle of the pre-shaped guiding catheter is usually fixed, and although the bending angle can be fixed for the patient with partial abnormal anatomical morphology, the bending angle is suitable for the patient with partial matched anatomical morphology and the patient with the shaped angle, but the bending angle can not be suitable for all different patients.

Disclosure of Invention

In view of the deficiencies of the prior art, it is an object of the present invention to provide an adjustable embryo transfer device that is capable of adjusting the curvature of a guide catheter to accommodate different anatomical configurations of different patients' uteri.

The purpose of the invention is realized by adopting the following technical scheme:

an adjustable embryo transfer device, comprising:

the handle is provided with a groove extending along the axial direction of the handle;

the guide catheter is of a plastic hollow tube structure with openings at two ends, the inner cavity of the guide catheter is communicated with the inner cavity of the handle, and a traction channel is arranged between the inner wall and the outer wall of the guide catheter;

the adjusting device comprises an adjusting piece movably arranged in the groove;

and a first end of the traction wire is inserted into the traction channel and fixedly arranged on the guide catheter, and a second end of the traction wire is connected with the adjusting piece.

Furthermore, opposite side walls of the groove are provided with oppositely arranged strip-shaped sawtooth parts, the adjusting piece is provided with two opposite elastic ribs, and the elastic ribs are provided with bulges meshed with the sawtooth parts.

Furthermore, an elastic piece is connected between the two elastic ribs which are oppositely arranged.

Further, the traction channel is on the same side as the groove.

Furthermore, the guide catheter comprises a supporting pipe section, a connecting pipe section and a bending adjusting pipe section which are sequentially connected, the supporting pipe section is connected with the handle, the supporting pipe section, the connecting pipe section and the bending adjusting pipe section are different in hardness degree, the hardness of the supporting pipe section is harder than that of the connecting pipe section, and the hardness of the connecting pipe section is harder than that of the bending adjusting pipe section.

Further, the end portion of the bend adjusting pipe section, which faces away from the connecting pipe section, is connected with a guiding pipe body, the guiding pipe body is of a plastic hollow conical pipe body structure, the two ends of the guiding pipe body are provided with openings, the inner diameter of the first end of the guiding pipe body is larger than that of the second end of the guiding pipe body, the first end of the guiding pipe body is connected with the bend adjusting pipe section, and the inner cavity of the guiding pipe body is communicated with the inner cavity of the bend adjusting pipe section.

Furthermore, a circular ring piece is arranged at one end, close to the bend adjusting pipe section, of the leading-in pipe body and is used for communicating the leading-in pipe body with the bend adjusting pipe section, a groove which is not communicated with an inner cavity of the circular ring piece is formed in the outer wall of the circular ring piece, and one end, back to the adjusting piece, of the traction wire is welded on the groove.

Further, the central axis of the guiding catheter and the central axis of the inner cavity of the guiding catheter are not on the same straight line.

Furthermore, the adjusting device also comprises a pushing piece connected with the adjusting piece, a first inclined plane and a second inclined plane are arranged on the surface of the pushing piece, back to the surface of the pushing piece connected with the adjusting piece, the first inclined plane inclines upwards from one end of the elastic rib to the guide conduit, and the second inclined plane inclines downwards from one end of the elastic rib to the guide conduit.

Furthermore, a first through hole is formed in the bottom wall of the groove, a second through hole communicated with the first through hole is formed in the outer wall of the guide catheter, and the second through hole is located in the inner cavity of the handle, so that the traction wire can sequentially penetrate through the first through hole and the second through hole to enter the traction channel.

Compared with the prior art, the invention has the beneficial effects that:

when the invention is used, the guide catheter has plasticity, so that the end part of the guide catheter, which is back to the handle, can be bent by pushing the adjusting piece to move in the groove to pull the traction wire in the traction channel, thereby adjusting to achieve the effect of adjusting the bending degree of the guide catheter and adapting to different anatomical forms of different uteruses of different patients.

Drawings

FIG. 1 is a cross-sectional view of an embryo transfer device of the present invention;

FIG. 2 is a schematic view of a handle and guide catheter configuration according to an embodiment of the present invention;

FIG. 3 is an exploded view of the embryo transfer device of the present invention;

FIG. 4 is a first schematic structural view of a saw-tooth portion and a protrusion engaged state according to an embodiment of the present invention;

FIG. 5 is a second schematic structural view of the present invention relating to the engagement state of the serrations and the protrusions;

FIG. 6 is a third schematic structural view of the present invention relating to the engagement of the serrations with the projections;

FIG. 7 is a schematic view of a structure of an adjusting member according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a guide catheter made up of segments of different stiffness in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of a catheter constructed from a tube of uniform texture according to one embodiment of the present invention;

FIG. 10 is a cross-sectional view of a guiding catheter according to an embodiment of the present invention;

FIG. 11 is a schematic view of a connection between a ring member and a pull wire according to an embodiment of the present invention;

FIG. 12 is a schematic view of a pusher member according to an embodiment of the present invention;

FIG. 13 is an elevation view of a pusher member according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view of an embryo transfer device according to an embodiment of the present invention;

FIG. 15 is a schematic view of a handle and guide catheter configuration according to an embodiment of the present invention.

In the figure: 10. a handle; 101. a groove; 1011. a serration; 1012. a first through hole; 102. a bell mouth; 20. a guide catheter; 201. a traction channel; 202. supporting the pipe section; 203. connecting the pipe sections; 204. bending the pipe section; 205. a second through hole; 30. an adjustment member; 301. an elastic rib; 3011. a protrusion; 302. a threaded hole; 303. an installation part; 3031. buckling; 31. a pusher member; 311. a first inclined plane; 312. a second inclined plane; 313. a first arc surface; 314. a second arc surface; 315. a containing groove; 3151. a card slot; 40. drawing wires; 50. introducing into a tube body; 60. a fastener; 70. a gasket; 80. a circular ring member; 801. and (4) a groove.

Detailed Description

The present invention will be described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the following description, various embodiments or technical features may be arbitrarily combined to form a new embodiment without conflict.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The implementation mode is as follows:

referring to fig. 1-15, an adjustable embryo transfer device is shown.

The first embodiment is as follows:

referring to fig. 1-13, in this embodiment, the embryo transfer device includes a hollow handle 10, a guide catheter 20, an adjustment device, and a pull wire 40. Wherein, the handle 10 is provided with a groove 101 extending along the axial direction thereof, the guide catheter 20 is a plastic hollow tube structure with openings at two ends, the inner cavity of the guide catheter 20 is communicated with the inner cavity of the handle, and a traction channel 201 is arranged between the inner wall and the outer wall of the guide catheter 20; the adjusting device comprises an adjusting piece 30 movably arranged in the groove 101; a first end of the traction wire 40 is inserted into the traction channel 201 and fixed to the guide catheter 20, and a second end of the traction wire 40 is coupled to the adjusting member so that the guide catheter 20 can be bent by the traction wire 40. Therefore, when the invention is used, the guide catheter 20 has plasticity, so that the traction wire in the traction channel is pulled by pushing the adjusting piece to move in the groove, and the guide catheter can be bent towards the side with the traction channel 201 by pulling the traction wire backwards, so that the effect of adjusting the bending degree of the guide catheter is achieved, and the invention can adapt to different anatomical forms of different uteruses of different patients.

It should be noted that the first end of the pulling wire 40 and the guiding catheter 20 can be fixed together by glue, welding, or by looping or the like, and it is not limited herein, and it is within the scope of the present invention for a person skilled in the art to reasonably modify the way the pulling wire 40 is fixed on the guiding catheter 20.

The shapeable guiding catheter 20 is made of a medical material in the prior art, such as polyurethane or high molecular weight polyethylene.

In this embodiment, two opposite side walls of the slot 101 are provided with opposite strip-shaped saw teeth 1011, the adjusting member 30 is provided with two opposite elastic ribs 301, and the elastic ribs 301 are provided with protrusions 3011 engaged with the saw teeth 1011, so that the adjusting member 30 can be adjusted to move in the slot 101 by engaging the protrusions 3011 with the saw teeth 1011. Wherein, the guiding catheter 20 is arranged in the same direction as the sawtooth part 1011 and is communicated with the inner cavity of the handle 10, and the inner cavity end of the handle 10 is formed with a bell mouth 102, the bell mouth 102 is used for inserting an embryo transfer tube, and the inner cavity of the embryo transfer tube is communicated with the inner cavity of the guiding catheter 20. Therefore, the inner cavity of the embryo transfer tube, the inner cavity of the handle 10 and the inner cavity of the guide catheter 20 are communicated in sequence to form the embryo transfer passage, or the embryo transfer tube is directly inserted into the inner cavity of the guide catheter 20 through the inner cavity of the handle 10 and is communicated with the guide catheter to form the embryo transfer passage. When the bending degree of the guiding catheter 20 needs to be adjusted, because the guiding catheter has plasticity and one end of the traction wire 40 fixed in the traction channel 201 is close to the end part of the guiding catheter 20, the traction wire 40 in the traction channel 201 can be pulled by pushing the adjusting piece 30 to move in the groove 101, so that the end part of the guiding catheter 20 opposite to the handle 10 is bent.

As shown in fig. 4-6, in the process of pushing the adjusting member 30 by force, since the elastic ribs 301 on the adjusting member 30 have a certain toughness, the two protrusions 3011 on the two elastic ribs 301 engaged with the saw teeth 1011 on the two side walls of the slot 101 can be tightened relatively, and at the same time, the protrusions 3011 move into the next tooth slot of the saw teeth 1011 along the narrowing of the oblique edge and the peak of the saw teeth 1011, after the protrusions 3011 enter one tooth slot of the saw teeth 1011, the protrusions 3011 will be fixed in the tooth slot of the saw teeth 1011 and will not slide continuously without being subjected to an external force, thereby achieving the quantitative effect of bending adjustment of the guide duct 20; in addition, because the guiding catheter 20 and the saw tooth 1011 are arranged in the same direction, and the traction channel 201 is arranged at the same side of the groove 101, the bending-adjustable orientation effect of the guiding catheter 20 is realized.

In conclusion, the embryo transplantation device of the present invention can realize the effect of directionally and quantitatively adjusting the curvature of the guide catheter 20 to adapt to different anatomical forms of the uterus of different patients, and the guide catheter 20 of different types does not need to be selected in advance according to the physiological anatomical forms of the patients, so as to provide a guiding function for the embryo guide catheter 20, ensure that the guide catheter 20 can smoothly and rapidly enter the cervix, rapidly establish a transplantation channel for embryo transplantation, reduce the operation steps and difficulty of the operation, and save the operation time.

In this embodiment, the wave crests and the wave troughs of the sawtooth parts 1011 are transitionally connected through an arc, so that the protrusions 3011 on the elastic ribs 301 enter the lower tooth sockets (wave troughs) from the upper tooth sockets (wave troughs) of the sawtooth parts 1011, therefore, the engagement of the protrusions 3011 on the elastic ribs 301 and the strip-shaped sawtooth parts 1011 enables the tooth sockets of each arc-shaped sawtooth to be similar to the effect of one gear, and an operator can drag the traction wire 40 to move forwards and backwards through the directional and quantitative structure, so as to achieve the purpose of bending the end part of the guide catheter 20 back to the handle 10. It should be noted that, because the wave crests and the wave troughs of the saw teeth 1011 are transitionally connected by an arc, the adjusting member 30 can move back and forth in the groove 101 under the action of external force, that is, the adjusting process of the adjusting member 30 is reversible, the adjusting member 30 can be pulled back (pushed in the direction opposite to the guiding catheter 20) in addition to being pushed forward (pushed in the direction toward the guiding catheter 20), and the bending angle of the guiding catheter 20 can be adjusted for multiple times during the use process to achieve the best surgical effect.

In this embodiment, the guide catheter 20 is made of sections of the same material and different stiffness. As shown in fig. 8, the guiding catheter 20 includes a supporting tube section 202, a connecting tube section 203 and a bending tube section 204, which are integrally formed and sequentially connected, the supporting tube section 202 is connected to the handle 10, the supporting tube section 202, the connecting tube section 203 and the bending tube section 204 have different hardness degrees, the supporting tube section 202 has a hardness higher than that of the connecting tube section 203, and the connecting tube section 203 has a hardness higher than that of the bending tube section 204.

As a preferred embodiment, support tube section 202 has a hardness of 95A (shore hardness) so that support tube section 202 can give better support to the tubular body of support tube section 202 without being easily bent and deformed; the connecting pipe section 203 is a transition section, and the hardness of the transition section is 75A (Shore hardness); the bending adjustment pipe section 204 has a hardness of 40A (shore hardness), and since the bending adjustment pipe section 204 needs to be placed in the cervix of the patient, the bending adjustment pipe section 204 is softer than the connecting pipe section 203, so that bending adjustment deformation is facilitated, the purpose of only bending the bending adjustment pipe section 204 is achieved, and the guide catheter 20 can find an effective path to enter the human body more quickly.

Of course, in other embodiments, the guiding catheter 20 may also be a tube with uniform texture, which is not limited herein, but only the guiding catheter 20 is a tube with uniform texture, when the guiding catheter 20 is bent under the traction of the traction wire 40, the bent side of the guiding catheter 20 is bent to one side by the tensile force, and since the stiffness of the tube of the guiding catheter 20 is consistent, the whole guiding catheter 20 may be bent to one side (as shown in fig. 9), and thus, the guiding catheter 20 of this embodiment is composed of tube sections with different stiffness, which achieves better bending effect.

In this embodiment, the end of the bend adjusting pipe section 204 opposite to the connecting pipe section 203 is connected with the introducing pipe 50, the introducing pipe 50 is a plastic hollow conical pipe structure with openings at two ends, the inner diameter of the first end of the introducing pipe 50 is larger than that of the second end of the introducing pipe 50, the first end of the introducing pipe 50 is connected with the bend adjusting pipe section 204, and the inner cavity of the introducing pipe 50 is communicated with the inner cavity of the bend adjusting pipe section 204. It can be seen that the guiding catheter 20 is introduced into the human body through the second end of the introducing tube 50, and the introducing tube 50 has a tapered tube structure, so that it is convenient to enter the cervix. In addition, the end surface of the second end of the introducing pipe body 50 is set to be spherical, so that damage to the endometrium can be avoided.

In this embodiment, a circular ring member 80 is disposed at one end of the introducing pipe body 50 close to the bend adjusting pipe section 204, the circular ring member 80 is used for communicating the introducing pipe body 50 and the bend adjusting pipe section 204, as shown in fig. 11, a groove 801 that is not communicated with an inner cavity of the circular ring member 80 is formed on an outer wall of the circular ring member 80, and one end of the traction wire 40, which faces away from the adjusting member 30, is welded on the groove 801. The groove 801 may be a linear or T-shaped groove 801, and the end of the traction wire 40 away from the connection with the adjusting member 30 is fixed on the linear or T-shaped groove 801 by welding, so as to increase the connection force between the traction wire 40 and the guiding catheter 20, and prevent the traction wire from loosening. Of course, the ring member 80 is made of a material for ultrasonic reflection visualization, so that the visualization under the operation is convenient, the visibility of the doctor is higher, and the operation difficulty is reduced.

In this embodiment, as shown in fig. 3, a threaded hole 302 is disposed at an end of the adjusting element 30 opposite to the elastic rib 301, and one end of the traction wire 40 connected to the adjusting element 30 is circumferentially wound on the fastening element 60 sleeved with the washer 70, so that the traction wire 40 can be fixed on the adjusting element 30 by screwing the fastening element 60 sleeved with the washer 70 with the threaded hole 302. That is, it can be understood that the end of the traction wire 40 away from the connection with the guiding catheter 20 is wrapped around the fastening member 60, and the washer 70 is sleeved on the fastening member 60 before the traction wire 40 is wrapped around the fastening member 60, and the fastening member 60 is a bolt, so that the traction wire 40 is fixed more firmly by the washer 70 after the bolt is screwed into the threaded hole 302. The traction wire 40 is a rigid material which is not easy to break and deform, such as a stainless steel wire or a nickel-titanium wire.

In this embodiment, since a cavity for placing the traction wire 40 is added to the transplantation guiding catheter, the diameter of the transplantation guiding catheter is larger than the original diameter, and therefore, the central axis of the guiding catheter 20 and the central axis of the inner cavity of the guiding catheter are arranged on different straight lines, as shown in fig. 10, that is, the inner ring and the outer ring of the guiding catheter 20 are made into an eccentric structure, so as to reduce the outer diameter of the transplantation guiding catheter.

In this embodiment, be connected with the elastic component between two elastic muscle 301 that set up relatively, the elastic component is the spring, at the in-process of the guide pipe 20 that bends many times, because the structure of elastic muscle 301 can produce fatigue and weaken its resilience effect, lead to the arch 3011 on the elastic muscle 301 unable chucking in the tooth's socket of sawtooth portion 1011, therefore through the spring of being connected between two elastic muscle 301, can prevent that elastic muscle 301 is tired and unable resilience or the condition that the resilience effect weakens.

To facilitate the sliding of the adjustment member 30 in the slot 101, the present invention may also include, as a preferred embodiment, the following additional features: the adjusting device further comprises a pushing member 31, the pushing member 31 can be connected with the adjusting member 30 through a snap structure, and the pushing member 31 is used for driving the adjusting member 30 to move in the groove 101. Specifically, as shown in fig. 12 and 13, the pushing member 31 is provided with a receiving groove 315, opposite side walls of the receiving groove 315 are provided with a clamping groove 3151, the adjusting member 30 is provided with an installation portion 303 adapted to the receiving groove 315, and opposite side walls of the installation portion 303 are provided with a buckle 3031 adapted to the clamping groove 3151, the receiving groove of the pushing member 31 is buckled and pressed in the receiving groove, and the pushing member 31 and the adjusting member 30 can be connected by the matching of the clamping groove 3151 and the buckle 3031. Further, the pushing member 31 is provided with a first inclined surface 311 and a second inclined surface 312 facing away from the surface of the pushing member 31 connected to the adjusting member 30, the first inclined surface 311 inclines upwards from one end of the elastic rib 301 to the guide tube 20, the second inclined surface 312 inclines downwards from one end of the elastic rib 301 to the guide tube 20, and the first inclined surface 311 and the second inclined surface 312 are provided to facilitate an operator to push or pull the adjusting member 30 using the pushing member 31. As shown in fig. 13, in addition, the bottom of the first inclined surface 311 is provided with a first arc surface 313, and the bottom of the second inclined surface 312 is provided with a second arc surface 314, that is, one side of the pushing member 31 is in arc transition connection with the bottom edge of the first inclined surface 311, and the other side of the pushing member 31 is in arc transition connection with the bottom edge of the second inclined surface 312, so that the fingers can be prevented from being scratched when the pushing and pulling of the pushing member 31 drives the adjusting member 30 to slide back and forth in the groove 101, and the adjusting member can be applied to a scene requiring a larger friction force.

It should be noted that, as shown in fig. 12, the surface of the pushing element 31 facing away from the surface thereof connected to the adjusting element 30 is further provided with a knurled structure, and the knurled structure is arranged on the first inclined surface 311, the second inclined surface 312, the first arc surface 313 and the second arc surface 314, and is used for increasing the friction force when the traction wire 40 is pushed or pulled.

In this embodiment, the bottom wall of the groove 101 is provided with a first through hole 1012, the outer wall of the guiding catheter 20 is provided with a second through hole 205 communicated with the first through hole 1012, and the second through hole 205 is located in the inner cavity of the handle 10, so that the pulling wire 40 can sequentially penetrate through the first through hole 1012 and the second through hole 205 to enter the pulling channel 201, and thus the pulling wire 40 can enter the pulling channel 201 from the inside of the handle 10, thereby preventing the pulling wire 40 from being exposed to the outside and being damaged, and protecting the pulling wire 40.

Example two:

referring to fig. 14 to 15, the difference between the present embodiment and the first embodiment is: the pull wire 40 exits the pull channel 201 in a different path than the path of attachment to the adjustment member 30.

In this embodiment, the first through hole 1012 is formed on the sidewall of the groove 101 facing the guiding catheter 20 and penetrates the sidewall, and the second through hole 205 is also formed on the outer wall of the guiding catheter 20 and communicates with the drawing channel 201, but the second through hole 205 is not in the inner cavity of the handle 10, i.e. is exposed outside, after the first end of the pulling wire 40 is fixed on the adjusting member 30, the second end of the pulling wire 40 sequentially penetrates the first through hole 1012 and the second through hole 205 to enter the drawing channel 201. Therefore, it can be seen that a portion of the pull wire 40 is exposed, and compared to the first embodiment which relates to the pull wire 40 passing through the passage 201 to connect with the adjustment member 30, the first embodiment has no obvious effect on the passage of the pull wire 40 passing through the passage 201 to connect with the adjustment member 30.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. An adjustable embryo transfer device, comprising:

the handle (10) is hollow, and a groove (101) extending along the axial direction of the handle (10) is formed in the handle (10);

the guide catheter (20) is a plastic hollow tube structure with openings at two ends, the inner cavity of the guide catheter (20) is communicated with the inner cavity of the handle (10), and a traction channel (201) is arranged between the inner wall and the outer wall of the guide catheter (20);

-an adjustment device comprising an adjustment member (30) movably arranged in the groove (101);

the first end of the traction wire (40) is inserted into the traction channel (201) and is fixedly arranged on the guide catheter (20), and the second end of the traction wire (40) is connected with the adjusting piece (30).

2. The adjustable embryo transfer device of claim 1, wherein: the adjustable groove is characterized in that opposite two side walls of the groove (101) are provided with oppositely arranged strip-shaped sawtooth parts (1011), the adjusting piece (30) is provided with two oppositely arranged elastic ribs (301), and the elastic ribs (301) are provided with protrusions (3011) meshed with the sawtooth parts (1011).

3. An adjustable embryo transfer device according to claim 2, wherein: an elastic piece is connected between the two elastic ribs (301) which are arranged oppositely.

4. The adjustable embryo transfer device of claim 1, wherein: the traction channel (201) is arranged on the same side of the groove (101).

5. The adjustable embryo transfer device of claim 1, wherein: the guide catheter (20) comprises a support pipe section (202), a connecting pipe section (203) and a bending adjusting pipe section (204) which are sequentially connected, the support pipe section (202) is connected with the handle (10), the hardness degrees of the support pipe section (202), the connecting pipe section (203) and the bending adjusting pipe section (204) are different, the hardness of the support pipe section (202) is harder than that of the connecting pipe section (203), and the hardness of the connecting pipe section (203) is harder than that of the bending adjusting pipe section (204).

6. An adjustable embryo transfer device according to claim 5, wherein: transfer dorsad of bend section (204) the end connection who connects pipeline section (203) has leading-in body (50), leading-in body (50) are shapeable and both ends are equipped with open-ended cavity toper body structure, the internal diameter of the first end of leading-in body (50) is big than the internal diameter of self second end, the first end of leading-in body (50) with transfer bend section (204) and connect, and make the inner chamber of leading-in body (50) with the inner chamber of transferring bend section (204) communicates with each other.

7. An adjustable embryo transfer device according to claim 6, wherein: the guiding-in body (50) is close to one end of transferring bent pipe section (204) is equipped with ring spare (80), ring spare (80) are used for the intercommunication guiding-in body (50) with transfer bent pipe section (204), set up on the outer wall of ring spare (80) with the recess (801) that self inner chamber is unable to lead to, pull wire (40) dorsad the one end welding of regulating part (30) is in on recess (801).

8. The adjustable embryo transfer device of claim 1, wherein: the central axis of the guide catheter (20) is not on the same straight line with the central axis of the inner cavity of the guide catheter.

9. The adjustable embryo transfer device of claim 1, wherein: the adjusting device further comprises a pushing piece (31) connected with the adjusting piece (30), a first inclined plane (311) and a second inclined plane (312) are arranged on the surface, back to the adjusting piece (30), of the pushing piece (31), the surface is connected with the adjusting piece (30), the first inclined plane (311) inclines upwards from one end of the elastic rib (301) to the guide conduit (20), and the second inclined plane (312) inclines downwards from one end of the elastic rib (301) to the guide conduit (20).

10. An adjustable embryo transfer device according to any of claims 1 to 9, wherein: the bottom wall of the groove (101) is provided with a first through hole (1012), the outer wall of the guide catheter (20) is provided with a second through hole (205) communicated with the first through hole (1012), and the second through hole (205) is positioned in the inner cavity of the handle (10), so that the traction wire (40) can sequentially penetrate through the first through hole (1012) and the second through hole (205) to enter the traction channel (201).