Genital tract expansion device for early-stage and middle-stage pregnancy termination

Abstract

The invention discloses a genital tract dilation device for early and middle stage pregnancy termination, relates to the technical field of genital tract dilation instruments, and provides the following scheme that the genital tract dilation device comprises a valve type cervical orifice dilator and a pair of genital tract dilation forceps, and the valve type cervical orifice dilator is clamped at the tip position of the front side of the genital tract dilation forceps; the valve type cervical orifice dilator comprises 6-8 arc-shaped side plates which are arranged in an annular array. According to the technical scheme, the expansion control mechanisms are arranged on the forceps arms of the oval forceps, and by means of an arc-shaped strip and a rectangular clamping groove in the left forceps arm, after the two forceps arms are expanded by a certain angle, a rectangular coupling clamping block in the right forceps arm is pushed forwards to be clamped into the rectangular clamping groove in the arc-shaped strip, and then the forceps arms are expanded by a certain angle. The opening and closing angle of the pliers is stably and firmly limited; in addition, by arranging the valve type cervical orifice dilator, the cervical orifice is dilated in multiple directions in a pneumatic mode, amniotic fluid can be helped to flow out when the pregnancy is terminated, and a space for clamping a pregnancy object can also be provided.

Description

Technical Field

[0001] The present invention relates to the technical field of reproductive tract dilation instruments, and particularly relates to a reproductive tract dilation device for early and mid-term pregnancy termination. Background Art

[0002] An induced abortion operation refers to terminating a pregnancy by surgical means, that is, "artificially" terminating a pregnancy. Modern induced abortion operation methods include vacuum aspiration and forceps evacuation, etc. Vacuum aspiration is to insert a hollow suction tube into the uterine cavity and suck out the embryonic tissue in the uterus through negative pressure, while forceps evacuation is to clamp out large pieces of embryonic tissue in the uterus with an ovum forceps. To ensure the smooth progress of forceps evacuation, cervical dilation preparation should be done first.

[0003] At the present stage, in the dilation operation of the cervix and reproductive tract, a cervical dilator or dilation drug is basically used. Among them, the cervical dilator is a metallic rod, and when using the cervical dilator for cervical dilation, a doctor still needs to manually support the rod. The ovum forceps enter the uterine cavity to clamp the embryonic tissue after the cervix is dilated, and at the same time, the ovum forceps also play a role in assisting the dilation of the reproductive tract. However, the ovum forceps basically only have the function of clamping and locking, but do not have the ability to limit the dilation angle, resulting in insufficient control of the dilation degree, and the stability of dilation basically depends on the doctor's hand support. Therefore, those skilled in the art propose a reproductive tract dilation device for early and mid-term pregnancy termination here. Summary of the Invention

[0004] In view of the above background art, at the present stage during reproductive tract dilation, a cervical dilator is basically used to dilate the cervix and reproductive tract, with insufficient control of the dilation degree, and the stability of dilation basically depending on the doctor's hand support. Moreover, when using an ovum forceps for auxiliary dilation, the ovum forceps do not have the ability to limit the dilation angle. Therefore, a technical solution for a reproductive tract dilation device for early and mid-term pregnancy termination is provided.

[0005] It includes a petal-shaped cervical orifice dilator and a reproductive tract dilation forceps, and the petal-shaped cervical orifice dilator is clamped at the front tip position of the reproductive tract dilation forceps;

[0006] The petal-shaped cervical orifice dilator includes 6 - 8 arc-shaped side plates arranged in an annular array, 6 - 8 arc-shaped end heads fixedly connected to the front ends of the arc-shaped side plates, and a silica gel sheath sleeved on the outer surface of the arc-shaped side plates. 4 - 6 groups of pneumatic expansion components are arranged inside the arc-shaped side plates, and an air delivery pipe is arranged between the arc-shaped side plates. One end of the air delivery pipe far from the arc-shaped side plates is connected with a one-way control valve, the air inlet end of the one-way control valve is connected with a guiding pipe, and the other end of the guiding pipe is connected with a latex airbag.

[0007] Specifically, after disinfecting the petal-shaped cervical dilator and the genital tract dilator forceps, the petal-shaped cervical dilator is clamped and taken into the genital tract by the genital tract dilator forceps. After inserting the petal-shaped cervical dilator into the cervix relying on an endoscope, continuously squeeze the latex airbag, and deliver gas to the air delivery pipe through the guiding pipe and the one-way control valve. Due to the one-way check function of the one-way control valve, the air inside the air delivery pipe is input into the telescopic joint corrugated pipe, forcing the guide plate to gradually change from the original contracted state to the extended state, thereby expanding and deforming the silicone envelope of the arc-shaped side plate outward, and finally dilating the cervix. The forceps beak and the forceps leaf are driven by the left forceps arm and the right forceps arm to break the gestational sac, allowing the amniotic fluid to flow out along the channels expanded by the arc-shaped side plate and the arc-shaped end head.

[0008] Each of the pneumatic expansion components includes 6-8 telescopic joint corrugated pipes arranged in a circular array, and a guide plate fixedly connected to the outer ends of the telescopic joint corrugated pipes. The inner ends of the telescopic joint corrugated pipes communicate with the inner cavity of the air delivery pipe;

[0009] The genital tract dilator forceps includes a left forceps arm and a right forceps arm. The front ends of the left forceps arm and the right forceps arm are hinged to each other. The ends of the left forceps arm and the right forceps arm away from the hinge point are fixedly connected with forceps beaks, and the front ends of the forceps beaks are fixedly connected with forceps leaves. Specifically, expand the left forceps arm and the right forceps arm to an appropriate angle, make the outer surfaces of the left forceps arm and the right forceps arm contact the inner wall of the genital tract, and then use the middle finger or index finger of the right hand to push the rectangular coupling block forward, so that the rectangular coupling block is riveted into the rectangular card slot at the current position, realizing the restriction of the expansion or closing of the left forceps arm and the right forceps arm. After the amniotic fluid and the like flow out, push the rectangular coupling block back, and use the left forceps arm and the right forceps arm to control and clamp the pregnancy product.

[0010] An arc-shaped strip penetrating the right forceps arm is fixed on the rear section of the side of the left forceps arm close to the right forceps arm. A number of equally spaced rectangular card slots are arranged in a circular array on the upper surface of the arc-shaped strip. A rectangular coupling block is movably arranged in the front-rear direction at the rear section inside the right forceps arm, and the rectangular coupling block is pushed forward and coupled into the inside of the rectangular card slot.

[0011] In the above technical solution of a genital tract dilation device for early and mid-term pregnancy termination, preferably: tooth patterns are provided on the surfaces of the sides where the forceps beaks are close to each other and the sides where the forceps leaves are close to each other, and the forceps beak is in a straight handle or elbow state.

[0012] In the above technical solution of a genital tract dilation device for early and mid-term pregnancy termination, preferably: the left forceps arm is stacked on the upper surface of the right forceps arm, and a shaft pin penetrates through the overlapping position of the left forceps arm and the right forceps arm.

[0013] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: the radian of the arc-shaped strip is consistent with the rotation radian between the left forceps arm and the right forceps arm.

[0014] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: a transverse through-hole for the arc-shaped strip to penetrate and move is provided inside the rear section of the right forceps arm, and a through-groove for the rectangular coupling block to move back and forth is provided on the upper surface of the right forceps arm, and the through-groove communicates with the inner cavity of the transverse through-hole.

[0015] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: the top end of the rectangular coupling block penetrates out from the upper surface of the right forceps arm, and a convex block is fixedly connected to the top surface of the rectangular coupling block for the right index finger or middle finger to toggle the rectangular coupling block back and forth.

[0016] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: symmetric grips are fixedly provided at the rear ends of the left forceps arm and the right forceps arm, and arm locking teeth capable of locking with each other are fixedly provided on the surfaces of the rear sections of the left forceps arm and the right forceps arm close to each other.

[0017] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: the arc-shaped side plates form a hollow cylinder after being closed together, and the arc-shaped end heads form a hollow hemisphere after being closed together.

[0018] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: a plurality of through-holes communicating with the inner ends of the inner sides of the expansion joint bellows are provided on the outer ring between the arc-shaped side plates of the air delivery pipe, and the inner cavity space of the expansion joint bellows and the inner cavity space of the air delivery pipe communicate with each other through the through-holes.

[0019] In the above technical solution of a genital tract dilator for early and mid-term pregnancy termination, preferably: the end of the force guiding plate away from the expansion joint bellows is fixedly connected to the inner surface of the arc-shaped side plate.

[0020] It can be seen from the above technical solutions that the present invention provides a genital tract dilator for early and mid-term pregnancy termination. Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the technical solution of the present invention, by providing a dilation control mechanism on the clamping arms of the oval forceps, with the arc-shaped strip and rectangular card slot on the left clamping arm, after the two clamping arms are dilated by a certain angle, the rectangular coupling block inside the right clamping arm is pushed forward to be inserted into the rectangular card slot on the arc-shaped strip, so as to stably and firmly limit the opening and closing angle of the forceps; moreover, by providing a petal-shaped cervical orifice dilator, the cervical orifice is dilated in multiple directions in a pneumatic manner, which can help the amniotic fluid to flow out during pregnancy termination and also provide a space for clamping the pregnancy product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce and explain the drawings required for the description of the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the reproductive tract dilator;

[0024] Figure 2 It is a schematic diagram of the petal-shaped cervical orifice dilator;

[0025] Figure 3 It is a schematic diagram of the pneumatic expansion component inside the petal-shaped cervical orifice dilator;

[0026] Figure 4 It is a schematic diagram of the airbag part in the petal-shaped cervical orifice dilator;

[0027] Figure 5 It is a schematic diagram of the reproductive tract dilator forceps.

[0028] APPENDIX Figure 1 - APPENDIX Figure 5 The corresponding relationships of the components among them are as follows:

[0029] 1. Petal-shaped cervical orifice dilator; 11. Arc-shaped side plate; 12. Arc-shaped end; 13. Silicone sheath; 14. Air delivery pipe; 15. One-way control valve; 16. Guide pipe; 17. Latex airbag; 2. Reproductive tract dilator forceps; 21. Left clamping arm; 22. Right clamping arm; 23. Rectangular card slot; 24. Arc-shaped strip; 25. Rectangular coupling block; 26. Grip; 27. Forceps beak; 28. Axle pin; 29. Forceps leaf; 210. Clamping arm lock tooth; 3. Pneumatic expansion component; 31. Telescopic joint bellows; 32. Force guide plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0031] In order to make a clearer explanation and description of the technical solutions and implementation manners of the present invention, the following introduces the preferred specific embodiments for implementing the technical solutions of the present invention.

[0032] Embodiment; A preferred technical solution of a genital tract dilator for early and mid-term pregnancy termination:

[0033] Refer to the attached drawings of the specification Figure 1 As shown: It includes a petal-type cervical orifice dilator 1 and a genital tract dilator forceps 2, and the petal-type cervical orifice dilator 1 is clamped at the front tip position of the genital tract dilator forceps 2;

[0034] Refer to the attached drawings of the specification Figure 2 As shown: The petal-type cervical orifice dilator 1 includes 6-8 arc-shaped side plates 11 arranged in a circular array, 6-8 arc-shaped end heads 12 fixedly connected to the front ends of the arc-shaped side plates 11, and a silica gel sheath 13 sleeved on the outer surface of the arc-shaped side plates 11. There are 4-6 groups of pneumatic expansion components 3 arranged inside the arc-shaped side plates 11. There is an air delivery pipe 14 arranged between the arc-shaped side plates 11. One end of the air delivery pipe 14 far from the arc-shaped side plates 11 is connected to a one-way control valve 15. The air inlet end of the one-way control valve 15 is connected to a guiding pipe 16, and the other end of the guiding pipe 16 is connected to a latex airbag 17;

[0035] Refer to the attached drawings of the specification Figure 3 As shown: Each of the pneumatic expansion components 3 includes 6-8 telescopic bellows 31 arranged in a circular array, and a force guiding plate 32 fixedly connected to the outer end heads of the telescopic bellows 31. The inner end heads of the telescopic bellows 31 are all communicated with the inner cavity of the air delivery pipe 14;

[0036] Refer to the attached drawings of the specification Figure 5 As shown: The genital tract dilator forceps 2 includes a left forceps arm 21 and a right forceps arm 22. The front ends of the left forceps arm 21 and the right forceps arm 22 are hinged to each other. The ends of the left forceps arm 21 and the right forceps arm 22 far from the hinge point are both fixedly connected with forceps beaks 27, and the front ends of the forceps beaks 27 are both fixedly connected with forceps blades 29;

[0037] Refer to the attached drawings of the specification Figure 5As shown: an arc strip 24 penetrating the right clamp arm 22 is fixed to the rear section of one side of the left clamp arm 21 close to the right clamp arm 22, and a plurality of rectangular slots 23 equidistantly arranged are provided on the upper surface of the arc strip 24 in a circular array, and a rectangular coupling block 25 is movably arranged at the rear section of the inner part of the right clamp arm 22, and the rectangular coupling block 25 is pushed forward and coupled to be inserted into the interior of the rectangular slot 23.

[0038] Refer to the instruction manual Figure 5 As shown in the figure, the side of the beak 27 and the side of the blade 29 are both provided with teeth, and the beak 27 is in a straight handle or elbow state. The left arm 21 is stacked on the upper surface of the right arm 22, and a shaft pin 28 is passed through the position where the left arm 21 and the right arm 22 overlap each other; the curvature of the arc strip 24 is consistent with the rotation curvature between the left arm 21 and the right arm 22.

[0039] Refer to the instruction manual Figure 5 As shown: a transverse through hole is provided inside the rear section of the right clamp arm 22 for the arc strip 24 to pass through and move, a through groove is provided on the upper surface of the right clamp arm 22 for the rectangular coupling block 25 to move forward and backward, the through groove and the inner cavity of the transverse through hole are interconnected, the top end of the rectangular coupling block 25 passes through the upper surface of the right clamp arm 22, and a protrusion is fixedly connected to the top surface of the rectangular coupling block 25 for the right index finger or middle finger to move the rectangular coupling block 25 forward and backward; symmetrical grips 26 are fixed to the rear end ends of the left clamp arm 21 and the right clamp arm 22, and clamp arm locking teeth 210 that can lock with each other are fixed to the rear section surface of the side where the left clamp arm 21 and the right clamp arm 22 are close to each other.

[0040] Refer to the instruction manual Figure 2 and attached Figure 3 As shown: the arc-shaped side plates 11 are closed together to form a hollow cylinder, and the arc-shaped end heads 12 are closed together to form a hollow hemisphere; the air supply pipe 14 is located between the arc-shaped side plates 11 and has a plurality of through holes on the outer ring thereof, which are connected to the inner end of the expansion joint bellows 31; the inner cavity space of the expansion joint bellows 31 and the inner cavity space of the air supply pipe 14 are connected to each other through the through holes; the end of the force guide plate 32 away from the expansion joint bellows 31 is fixedly connected to the inner surface of the arc-shaped side plate 11.

[0041] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0042] After disinfecting the petal - type cervical orifice dilator 1 and the genital tract dilator forceps 2, use the genital tract dilator forceps 2 to pick up the petal - type cervical orifice dilator 1 and insert it into the genital tract. Relying on the endoscope, insert the petal - type cervical orifice dilator 1 into the inner part of the cervical orifice. Then, continuously squeeze the latex airbag 17, and through the guiding tube 16 and the one - way control valve 15, send gas into the air delivery tube 14. Due to the one - way check function of the one - way control valve 15, the air inside the air delivery tube 14 is input into the telescopic joint bellows 31, forcing the guiding plate 32 to gradually change from the original contracted state to the extended state, so that the arc - shaped side plate 11 expands the deformable silica gel sleeve 13 outwards, and finally dilates the cervical orifice. Drive the forceps beak 27 and the forceps blade 29 by the left forceps arm 21 and the right forceps arm 22 to break the gestational sac, so that the amniotic fluid flows out along the channel after the expansion of the arc - shaped side plate 11 and the arc - shaped end 12.

[0043] While the cervical orifice is being dilated, expand the left forceps arm 21 and the right forceps arm 22 to an appropriate angle, so that the outer surfaces of the left forceps arm 21 and the right forceps arm 22 contact the inner wall of the genital tract. Then, use the middle finger or index finger of the right hand to push the rectangular coupling block 25 forward, so that the rectangular coupling block 25 is riveted into the rectangular card slot 23 at the current position, realizing the limitation of the expansion or closing of the left forceps arm 21 and the right forceps arm 22. After the amniotic fluid and the like flow out, push the rectangular coupling block 25 back, and use the left forceps arm 21 and the right forceps arm 22 to control the forceps beak 27 to pick up the pregnancy product.

[0044] The present invention is not limited to the above - mentioned optimal implementation manner. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention. Finally, it should also be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the implementation conditions of this application. Therefore, they do not have technical substance significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover.

Claims

1. A reproductive tract dilation device for early and mid-term termination of pregnancy, comprising a valve-type cervical dilator (1) and a reproductive tract dilator (2), characterized in that: The flap-type cervical dilator (1) is clamped at the front tip of the reproductive tract dilator (2); The flap-type cervical dilator (1) comprises an arc-shaped side plate (11) with 6-8 flaps in a circular array, an arc-shaped end head (12) with 6-8 flaps fixedly connected to the front end of the arc-shaped side plate (11), and a silicone sleeve (13) sleeved on the outer surface of the arc-shaped side plate (11), 4-6 groups of pneumatic expansion components (3) are arranged inside the arc-shaped side plates (11), an air supply pipe (14) is arranged between the arc-shaped side plates (11), one end of the air supply pipe (14) away from the arc-shaped side plate (11) is connected to a one-way control valve (15), the air inlet end of the one-way control valve (15) is connected to a guide pipe (16), and the other end of the guide pipe (16) is connected to a latex air bag (17); The pneumatic expansion assembly (3) includes 6 to 8 expansion joint bellows (31) arranged in a circular array, and a force guide plate (32) fixedly connected to the outer end of the expansion joint bellows (31), and the inner end of the expansion joint bellows (31) is connected to the inner cavity of the air delivery pipe (14); The reproductive tract expansion forceps (2) comprises a left forceps arm (21) and a right forceps arm (22), the front ends of the left forceps arm (21) and the right forceps arm (22) are hinged to each other, the ends of the left forceps arm (21) and the right forceps arm (22) away from the hinge point are fixedly connected to forceps beaks (27), and the front ends of the forceps beaks (27) are fixedly connected to forceps leaves (29); A curved strip (24) penetrating the right clamp arm (22) is fixed to a rear section of one side of the left clamp arm (21) close to the right clamp arm (22); a plurality of rectangular slots (23) arranged at equal intervals are provided on the upper surface of the curved strip (24) in a circular array; a rectangular coupling block (25) is movably arranged at the rear section of the right clamp arm (22); and the rectangular coupling block (25) is pushed forward to couple and snap into the interior of the rectangular slot (23).

2. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The sides of the pliers beaks (27) and the sides of the pliers leaves (29) that are close to each other are both provided with tooth patterns, and the pliers beaks (27) are in a straight handle or bent state.

3. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The left clamp arm (21) is stacked on the upper surface of the right clamp arm (22), and an axle pin (28) passes through the position where the left clamp arm (21) and the right clamp arm (22) overlap each other.

4. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The arc of the arc strip (24) is consistent with the rotation arc between the left clamp arm (21) and the right clamp arm (22).

5. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The rear section of the right clamp arm (22) is provided with a transverse through hole for the arc strip (24) to penetrate and move, and the upper surface of the right clamp arm (22) is provided with a through groove for the rectangular coupling block (25) to move forward and backward, and the through groove and the inner cavity of the transverse through hole are mutually connected.

6. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The top end of the rectangular coupling block (25) passes through the upper surface of the right clamp arm (22), and a protrusion is fixedly connected to the top surface of the rectangular coupling block (25) for allowing the right index finger or middle finger to move the rectangular coupling block (25) back and forth.

7. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The rear ends of the left clamp arm (21) and the right clamp arm (22) are both fixed with symmetrical grips (26), and the rear sections of the left clamp arm (21) and the right clamp arm (22) that are close to each other are both fixed with clamp arm locking teeth (210) that can be locked with each other.

8. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The arc-shaped side plates (11) are closed together to form a hollow cylinder, and the arc-shaped end heads (12) are closed together to form a hollow hemisphere.

9. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The outer ring of the gas delivery pipe (14) between the arc-shaped side plates (11) is provided with a plurality of through holes which are connected to the inner end of the expansion joint bellows (31); the inner cavity space of the expansion joint bellows (31) and the inner cavity space of the gas delivery pipe (14) are connected to each other through the through holes.

10. A reproductive tract dilation device for early and mid-term termination of pregnancy according to claim 1, characterized in that: The end of the force guide plate (32) away from the expansion joint bellows (31) is fixedly connected to the inner surface of the arc-shaped side plate (11).

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