Hysteroscopic open and close uterine cavity curette device

Abstract

The present invention relates to the field of medical devices, and in particular to a hysteroscopic open-and-close uterine cavity curette device, comprising: a curette end, a sleeve, a push-pull rod, and a handheld end; the curette end comprises a matching curette blade I and a curette blade II; the push-pull rod is passed through the sleeve and connected to the curette blade I and the curette blade II at one end, and connected to the handheld end at the other end; the handheld end is manually controlled to pull the push-pull rod to slide in the sleeve, so that the curette blades I and the curette blade II are released or retracted in the sleeve, and then an opening and closing operation is performed to facilitate the curette. In the hysteroscopic open-and-close uterine cavity curette device of the present invention, the handheld end is manually controlled to pull the push-pull rod to slide in the sleeve, so that the curette blades I and the curette blade II are released or retracted in the sleeve, and then an opening and closing operation is performed to facilitate the curette, and the operation is simple, convenient, and practical.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a hysteroscopic open-close uterine cavity curette device. Background Art

[0002] As a commonly used surgical instrument in gynecology, the uterine cavity curette is widely used for endometrial lesion resection, diagnostic curettage, and induced abortion. During pregnancy, the size of the uterine cavity increases. During the abortion procedure, as the uterine contents are expelled, the uterus shrinks due to contraction of the myometrium, and the cervix narrows accordingly. At this time, a smaller curette needs to be replaced to accommodate the changing uterus, depending on the size of the uterine cavity and the degree of cervical stenosis. Furthermore, when the uterus is abnormally positioned or a localized mass affects its shape, the size and shape of the curette fits the uterus and is crucial to the success of the curettage.

[0003] Hysteroscopic endometrial lesion resection, diagnostic curettage or endometrial biopsy also involve changes in the size and shape of the uterine cavity caused by abnormal uterine position or local mass. Hysteroscopic operations require higher flexibility and precision of the instruments. Therefore, there is an urgent need for an endoscopic uterine cavity curette with adjustable curette size and shape.

[0004] The utility model with patent number CN201820548806.8 discloses an easily adjustable uterine curette, comprising a curette head, a curette handle, a curette rod and a curette rod sleeve, wherein the curette head and the curette handle are respectively arranged at the two ends of the curette rod. The curette head is provided with an annular scraper ring that can be squeezed and deformed. The curette rod is provided with an external thread and a locking nut that cooperates with the external thread. The curette rod sleeve can be slidably sleeved on the outside of the curette rod and the end of the curette rod sleeve away from the curette handle abuts against the annular scraper ring, and the curette rod sleeve is provided with an internal thread that cooperates with the external thread. Although the size of the curette head of the utility model can be adjusted, the width of the curette head can only be adjusted by changing the extended length, and cannot be adjusted separately. It is difficult to coordinate the size of the curette head and the degree of fit between the uterus to an ideal state. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an open and close uterine cavity curette device under hysteroscopy.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] The present invention provides a hysteroscopic open-and-close uterine cavity curette device, comprising: a curette end, a sleeve, a push-pull rod, and a handheld end; the curette end comprises matching curette blades I and II, and the push-pull rod is passed through the sleeve and connected to the curette blades I and II at one end, and connected to the handheld end at the other end; the handheld end is manually controlled to pull the push-pull rod to slide in the sleeve, so that the curette blades I and II are released or contracted in the sleeve, and then the opening and closing operation is performed to facilitate the curette.

[0008] Furthermore, the scraper blade I and the scraper blade II are arranged symmetrically, and both the scraper blade I and the scraper blade II have arc-shaped tile-like structures. The bottom end edges of the scraper blade I and the scraper blade II are provided with cutting edges, and the cutting edges of the scraper blade I and the scraper blade II have elastic deformation characteristics. The opposite sides of the scraper blade I and the scraper blade II are provided with serrations; under force, the scraper blade I and the scraper blade II are staggered with each other at the serrations and are completely engaged and fit together.

[0009] Furthermore, the upper ends of the scraper blades I and II are connected to the outer sides with a connecting petal, which has two branches. The two branches at one end of the connecting petal are respectively connected to the scraper blades I and II, and the other end of the connecting petal is connected to the push-pull rod. The connecting petal has elastic deformation characteristics; when there is no external force, the two branches of the connecting petal elastically open to the corresponding two sides.

[0010] Furthermore, the handheld end includes a pressure cover, a marking ring is provided on the outer surface of the sleeve near the scraper end, the sleeve is connected to the handle, the push-pull rod passes through the sleeve and the handle and is connected to the pressure cover, and a spring is provided on the push-pull rod between the handle and the pressure cover.

[0011] Furthermore, the scraper blade I and the scraper blade II have elastic deformation characteristics; when not subject to external force, the scraper blade I and the scraper blade II are bent into an arc; the arc inner side of the scraper blade I and the scraper blade II is provided with a slide groove, a guide block and a guide frame, and the two guide blocks of each group are symmetrically and parallelly distributed on both sides of the slide groove, and the edges of the scraper blade I and the scraper blade II are each distributed with a guide frame, and the guide blocks and guide frames are distributed on both sides of the slide groove, and the forked push rod is matched with the guide frame, guide block and slide groove. The forked push rod is V-shaped, and the two forks of the forked push rod are respectively passed through the guide frame and the slide groove in the middle of the guide block at the lower part of the scraper blade I and the scraper blade II. The forked push rod is connected to one end of the push rod, and the other end of the push rod is connected to a sliding handle. The push rod is sleeved in the push-pull rod, and the sliding handle is sleeved on the sleeve and slides freely along the axial direction of the sleeve.

[0012] Furthermore, a connecting flap is provided on the inner side of the sliding handle, which is connected to the push rod. A block-shaped protrusion is provided on the outer side of the sliding handle. A sliding handle groove is opened at the corresponding position on the sleeve and the push-pull rod. The connecting flap slides axially along the sleeve in the sliding handle groove.

[0013] Furthermore, the curette blade I and the curette blade II are combined together in a scissor-like shape, and the curette blade I and the curette blade II are connected by a hinge shaft and rotate and shear around the hinge shaft. The hinge shaft connects the curette blade I and the curette blade II to the push-pull rod.

[0014] Furthermore, the scraper blade I and the scraper blade II are partially fitted together, and the scraper blade I and the scraper blade II are connected by a connecting rod, which is V-shaped and has a rebound characteristic; in a natural state, the connecting rod bends outward into an arc and presents an open state, and the front and rear parts of the connecting rod are designed with a bent structure, the rear section is horizontal, and the front section is bent downward.

[0015] Furthermore, the V-shaped top of the connecting rod is connected to one end of the push-pull rod, and the other end of the push-pull rod is connected to the sliding handle. Two symmetrical levers are provided on both sides of the sliding handle body. The sliding handle and the spring are installed in the sliding groove of the handle sleeve. The sliding groove extends out of the two outer sides of the handle sleeve to form a lever groove. The two levers are symmetrically slid in the two lever grooves. A cylindrical boss is provided at the bottom of the handle sleeve, and the spring sleeve is provided on the cylindrical boss.

[0016] Furthermore, an annular protrusion is provided on the end surface of the handle sleeve, the handle sleeve is connected to the sleeve, and a flat groove is provided inside the sleeve near the end side of the scraper.

[0017] In the hysteroscopic open-and-close uterine cavity curette device of the present invention, the handheld end is manually controlled to pull the push-pull rod to slide in the sleeve, so that the curette blades I and II are released or contracted in the sleeve and then the opening and closing operation is performed to facilitate the curette, which is simple to operate, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 This is a structural fragmentary diagram of the first embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0020] Figure 2 This is a structural diagram of the two curette blades in the closed state at one angle in the first solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0021] Figure 3 This is a structural diagram of another angle of the two curette blades in the closed state of the first solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0022] Figure 4 This is a structural diagram of the two curette blades in the open state in the first solution of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0023] Figure 5 This is a structural fragmentary diagram of the second embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0024] Figure 6This is a structural diagram of one angle of the two curette blades in the straight and closed state in the second solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0025] Figure 7 This is a structural diagram of another angle of the two curette blades in the straight and closed state in the second solution of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0026] Figure 8 This is a structural diagram of the curette blade in the second embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0027] Figure 9 This is a structural exploded view of the sliding handle of the second embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0028] Figure 10 This is a structural diagram of the two curette blades in the straight and open state in the second embodiment of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0029] Figure 11 This is a structural diagram of one angle of the two curette blades in the bent and open state in the second solution of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0030] Figure 12 This is a structural diagram of another angle of the two curette blades in the bent and open state in the second solution of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0031] Figure 13 This is a structural diagram of one angle of the two curette blades in the bent and closed state in the second solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0032] Figure 14 This is a structural diagram of another angle of the two curette blades in the bent and closed state in the second solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0033] Figure 15 This is a structural diagram of the third embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0034] Figure 16 This is a structural diagram of two curette blades in the third solution of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0035] Figure 17 This is a structural fragmentary diagram of the fourth embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0036] Figure 18 This is a structural diagram of the connecting rod in the closed state of the fourth embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0037] Figure 19 This is a structural diagram of the connecting rod in the open state of the fourth embodiment of the hysteroscopic open and close uterine cavity curette device of the present invention;

[0038] Figure 20 This is a cross-sectional view of the structure of the sliding handle of the fourth embodiment of the hysteroscopic open-close uterine cavity curette device of the present invention;

[0039] The accompanying drawings are marked as follows: 1. sleeve; 2. push-pull rod; 3. scraper blade I; 4. scraper blade II; 5. connecting petal; 6. pressure cover; 7. marking ring; 8. handle; 9. spring; 10. slide groove; 11. guide block; 12. guide frame; 13. forked push rod; 14. push rod; 15. slide handle; 16. connecting petal; 17. block-shaped protrusion; 18. slide handle groove; 19. hinge shaft; 20. connecting rod; 21. slide handle; 22. shift rod; 23. slide groove; 24. shift rod groove; 25. cylindrical boss; 26. annular protrusion; 27. flat groove; 28. handle sleeve. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 efforts should fall within the scope of protection of the present invention.

[0041] like Figures 1 to 20 As shown, an embodiment of the present invention is a hysteroscopic open and close uterine cavity curette device, comprising: a curette end, a sleeve 1, a push-pull rod 2, and a handheld end; the curette end comprises matching curette blades I3 and II4, and the push-pull rod 2 is passed through the sleeve 1, with one end connected to the curette blades I3 and II4, and the other end connected to the handheld end; the handheld end is manually controlled to pull the push-pull rod 2 to slide in the sleeve 1, so that the curette blades I3 and II4 are released or contracted in the sleeve 1, and then the opening and closing operation is performed to facilitate the curette.

[0042] In the hysteroscopic opening and closing uterine cavity curette device of the present invention, the handheld end is manually controlled to pull the push-pull rod 2 to slide in the sleeve 1, so that the curette blades I3 and II4 are released or contracted in the sleeve 1 and then the opening and closing operation is performed to facilitate the curette, which is simple to operate, convenient and practical.

[0043] Among them, the scraper blade I3 and the scraper blade II4 are arranged symmetrically, and the scraper blade I3 and the scraper blade II4 are both arc-shaped tile-like structures. The bottom end edges of the scraper blade I3 and the scraper blade II4 are provided with cutting edges, and the cutting edges of the scraper blade I3 and the scraper blade II4 have elastic deformation characteristics. The opposite sides of the scraper blade I3 and the scraper blade II4 are provided with serrations; under force, the scraper blade I3 and the scraper blade II4 are staggered with each other at the serrations and are completely engaged and fit together.

[0044] This device has four schemes. Scheme 1 mainly consists of several parts such as a scraper end, a sleeve 1, a handle 8, a push-pull rod 2, a spring 9, and a pressure cover 6. The scraper end consists of three parts: scraper blade I3, scraper blade II4, and a connecting petal 5. The scraper blade I3 and the scraper blade II4 are symmetrically arranged and have the same size. The scraper blade I3 and the scraper blade II4 are both arc-shaped, similar to tile-like structures, and their arc radii are the same. The scraper blade I3 and the scraper blade II4 have the same thickness and the same width. A cutting edge is provided at the bottom end edge of the scraper blade I3 and the scraper blade II4. The presence of the cutting edge can effectively scrape away tissue and foreign matter on the inner wall of the uterine cavity. On the opposing sides of the curette blades I3 and II4 of this device, a serrated structure is designed on the end edges of the opposing sides. When subjected to force, the curette blades I3 and II4 can intersect with each other at the serrated structure, completely interlocking and fitting together. This can effectively prevent the curette blades I3 and II4 from being misaligned when combined, resulting in the cutting edges of the two sets of curette blades not being aligned. The curette end is a strip-shaped sheet with an elastic ring, and the curette edge has elastic deformation characteristics. When no external force is released, the curette edge is in a fully elastic state.

[0045] Among them, the upper ends of the scraper blades I3 and II4 are connected to the outer sides with a connecting petal 5, and the connecting petal 5 has two branches. The two branches at one end of the connecting petal 5 are respectively connected to the scraper blades I3 and II4, and the other end of the connecting petal 5 is connected to the push-pull rod 2. The connecting petal 5 has elastic deformation characteristics; when there is no external force, the two branches of the connecting petal 5 elastically open to the corresponding two sides.

[0046] The connecting petals 5 are connected to the outer sides of the upper ends of the scraper blades I3 and II4. The connecting petals 5 have two branches that are identical and have a square cross-section. The rear ends of the two connecting petals 5 are inserted into the front end of the push-pull rod 2, so that the connecting petals 5 are fixedly connected to the push-pull rod 2. The rear ends of the two connecting petals 5 are closely spaced, while the front ends connected to the scraper blades are widely spaced, so that the two connecting petals 5 have an overall trumpet-shaped profile that is wide in the front and narrow in the back. The connecting petals 5 have a certain degree of elastic deformation. When there is no external force, the two connecting petals 5 elastically open to the corresponding sides. When the push-pull rod 2 pushes the connecting petals 5 out of the end of the sleeve 1, the two connecting petals 5 drive the scraper blades I3 and II4 to open and separate under the action of the elastic force. When the push-pull rod 2 pulls the connecting petals 5 back to the end of the sleeve 1, the two connecting petals 5 drive the scraper blades I3 and II4 to merge to the middle position under the restraint of the sleeve 1 end.

[0047] Among them, the handheld end includes a pressure cover 6, a marking ring 7 is provided on the outer surface of the sleeve 1 near the scraper end, the sleeve 1 is connected to the handle 8, the push-pull rod 2 passes through the sleeve 1 and the handle 8 and is connected to the pressure cover 6, and a spring 9 is provided on the push-pull rod 2 between the handle 8 and the pressure cover 6.

[0048] The push-pull rod 2 is a cylindrical rod-shaped structure, and the two connecting petals 5 are symmetrically arranged on both sides of the center of the end face of the push-pull rod 2. The diameter of the push-pull rod 2 is larger than the cross-section of the connecting petal 5. The other end of the push-pull rod 2 is connected to the pressure cap 6. The pressure cap 6 is a stepped cylindrical shape, and the diameter near the end of the push-pull rod 2 is smaller than the diameter away from the end of the push-pull rod 2. The large end face diameter can facilitate the operator to push and pull the push-pull rod 2. The diameter of the pressure cap 6 near the end of the push-pull rod 2 is larger than the diameter of the push-pull rod 2. The push-pull rod 2 is arranged inside the sleeve 1. The sleeve 1 is a hollow cylindrical shape, and its inner diameter is slightly larger than the outer diameter of the push-pull rod 2, which can ensure that the push-pull rod 2 can move freely axially inside the sleeve 1. A marking ring 7 is provided on the outer surface of the sleeve 1 near the end of the scraper. The marking ring 7 is annular and its function is to develop an image, which can facilitate the operator to locate the position of the device in the human body. The other end of the sleeve 1 is fixedly connected to a handle 8. The handle 8 is T-shaped and hollow in the middle. A through hole is provided at the axis. The diameter of the through hole is the same as the inner diameter of the sleeve 1 and slightly larger than the diameter of the push-pull rod 2, ensuring that the push-pull rod 2 can move freely axially within the through hole. The handle 8 has a cylindrical body with a diameter slightly larger than the diameter of the sleeve 1. There are two retaining edges at the end of the handle 8 body. The retaining edges are symmetrically distributed on both sides of the handle 8 body. The retaining edges are bent towards the handle 8 body with a certain curvature. The curvature is the same as the curvature of a single human fingertip, which is ergonomic and convenient for the operator. A spring 9 is provided between the handle 8 and the pressure cover 6. The spring 9 is spiral. The inner diameter of the spring 9 is slightly larger than the outer diameter of the push-pull rod 2, which can ensure that the spring 9 can be installed on the push-pull rod 2. The outer diameter of the spring 9 is slightly smaller than the outer diameter of the pressure cover 6, ensuring that the spring 9 is installed between the handle 8 and the pressure cover 6 without slipping.

[0049] In this solution, when the operator operates the device, before the operation, under the elastic force of the spring 9, the pressure cover 6 is in the outermost position, and at the same time, the pressure cover 6 moves toward the pressure cover 6 with the push-pull rod 2. The push-pull rod 2 pulls the connecting petal 5 to move toward the pressure cover 6. During the movement, the connecting petal 5 will enter the sleeve 1, and the two branches of the connecting petal 5 will shrink and enter the sleeve 1. Then, the scraper blade I3 and the scraper blade II4 connected to the connecting petal 5 will gradually merge under the drive of the shrinkage of the connecting petal 5. The serrated structures of the scraper blade I3 and the scraper blade II4 will intertwine and fit together completely, thereby realizing the closure of the device and ensuring that the two scraper blades will not be misaligned in the process of the scraper operation. When the operator formally operates this device, the approximate position of the device in the human body can be located through the imaging effect of the marking ring 7 on the outer surface of the sleeve 1. The device is placed on the foreign body in the uterine cavity, and the handle 8 is fixed with the fingers. The pressure cover 6 is pushed, the spring 9 is compressed, the pressure cover 6 pushes the push-pull rod 2, and the push-pull rod 2 pushes the connecting petal 5. The connecting petal 5 is pushed out of the sleeve 1, and the two branches of the connecting petal 5 open outward, driving the scraper blade I3 and the scraper blade II4 to open to both sides. The scraper blade I3 and the scraper blade II4 are separated, realizing the opening of the scraper end of this device. Aim the end of the scraper at the foreign object and slowly release the gland 6. At this time, under the action of elastic force, the gland 6 pulls the push-pull rod 2, and the push-pull rod 2 pulls the connecting petal 5 into the sleeve 1. The two branches of the connecting petal 5 contract, driving the scraper blades I3 and II4 to close. After the scraper blades I3 and II4 are closed, the serrations on them bite into each other. This can prevent the scraper blades I3 and II4 from being misaligned in the process of scraping, which would affect the scraping effect. The scraper blade edge is used to scrape tissue or foreign matter on the inner wall surface in front of the device inside the uterine cavity. This process realizes the opening and closing of the scraper and the cleaning of foreign matter.

[0050] Among them, the scraper blade I3 and the scraper blade II4 have elastic deformation characteristics; when not subjected to external force, the scraper blade I3 and the scraper blade II4 are bent into an arc; the arc inner side of the scraper blade I3 and the scraper blade II4 is provided with a slide 10, a guide block 11 and a guide frame 12, and the two guide blocks 11 of each group are symmetrically distributed on both sides of the slide 10, and the edges of the scraper blade I3 and the scraper blade II4 are respectively distributed with a guide frame 12, and the guide blocks 11 and the guide frame 12 are distributed on both sides of the slide 10, and the guide blocks 11 and the guide frame 12 are distributed on both sides of the slide 10, and the guide blocks 11 and the guide frame 12 are distributed on both sides of the guide The forked push rod 13 cooperates with the frame 12, the guide block 11, and the chute 10. The forked push rod 13 is V-shaped, and the two forks of the forked push rod 13 are respectively passed through the guide frame 12 and the chute 10 in the middle of the guide block 11 at the lower part of the scraper blade Ⅰ3 and the scraper blade Ⅱ4. The forked push rod 13 is connected to one end of the push rod 14, and the other end of the push rod 14 is connected to the sliding handle 15. The push rod 14 is sleeved in the push-pull rod 2, and the sliding handle 15 is sleeved on the sleeve 1 and slides freely along the axial direction of the sleeve 1.

[0051] This device also has a second option. In Option 2, the handle 8, spring 9, pressure cap 6, and marking ring 7 are the same as in Option 1. The difference lies in the fact that Option 2 includes a curette end that can be bent to open and close, and can be bent and stretched to a flat, straight position, as well as a sleeve 1 with a sliding handle 15. Option 2 also includes curette blades I3 and II4, each with serrations and cutting edges. The opening and closing principles of blades I3 and II4 are the same as in Option 1. The difference lies in that in Option 2, blades I3 and II4 are made of a relatively elastic material with a certain degree of resilience. When not subjected to external force, blades I3 and II4 bend into an arc, the same shape as in Option 1. When subjected to force, they can deform according to the direction of the force. Inside the arc of blades I3 and II4 are located a sliding groove 10, a guide block 11, and a guide frame 12. The chute 10 is parallel to the outer edge of the scraper blade, distributed in the middle position between the scraper blades I3 and II4, and has a certain depth. The guide blocks 11 are symmetrically distributed in parallel on both sides of the chute 10. There are three groups of guide blocks 11 in total. These three groups of guide blocks 11 are evenly distributed along the chute 10, and the distance between each group of guide blocks 11 is the same as the width of the chute 10. The guide blocks 11 are rectangular parallelepipeds with a certain thickness. A guide frame 12 is distributed on the edge of each scraper blade I3 and II4. The guide blocks 11 and guide frames 12 on each scraper blade are in a straight line and are distributed on both sides of the chute 10. The guide frame 12 is a gate-shaped structure. The width of the hollowed-out part in the middle is the same as the width between each group of guide blocks 11, and the height is the same as the width from the guide block 11 to the bottom of the chute 10. Cooperating with the guide frame 12, the guide block 11 and the chute 10 is a forked push rod 13. The forked push rod 13 is V-shaped and straight. When working, the two forks of the V-shape can cooperate with the chute 10, the guide block 11 and the guide frame 12 on the scraper blade I3 and the scraper blade II4 respectively. The cross section of the V-shaped fork is rectangular, and its ends are provided with arc chamfers, which can easily cooperate with the guide frame 12 and the guide block 11. The height of the rectangular cross section of the V-shaped fork is slightly smaller than the height of the hollow guide frame 12, and its width is slightly smaller than the width of the hollow guide frame 12, ensuring that the V-shaped forked push rod 13 can move smoothly between the guide frame 12, the guide block 11 and the chute 10. Connected to the V-shaped fork is the push rod 14, and the cross section of the push rod 14 is also rectangular. The other end of the push rod 14 is connected to the sliding handle 15. The sliding handle 15 is annular as a whole, and its inner diameter is slightly larger than the inner diameter of the sleeve 1, which can ensure that the sliding handle 15 can slide freely along the axial direction on the outer wall of the sleeve 1.

[0052] Among them, a connecting flap 16 is provided on the inner side of the sliding handle 15, and the connecting flap 16 is connected to the push rod 14. A block-shaped protrusion 17 is provided on the outer side of the sliding handle 15. A sliding handle groove 18 is opened at the corresponding position on the sleeve 1 and the push-pull rod 2. The connecting flap 16 slides axially along the sleeve 1 in the sliding handle groove 18.

[0053] On the inner side of the sliding handle 15, there is a connecting flap 16. The connecting flap 16 is a flat block with the same width as the sliding handle 15. The connecting flap 16 is fixed to the push rod 14. On the outer side of the sliding handle 15, there is a block-shaped protrusion 17. The block-shaped protrusion 17 is provided with arc chamfers on all sides. The circular block-shaped protrusion 17 allows the operator to easily operate the sliding handle 15 to move axially on the sleeve 1. The sleeve 1 and push-pull rod 2 in the second scheme have an additional sliding handle groove 18 compared to the sleeve 1 and push-pull rod 2 in the first scheme. The sliding handle groove 18 cooperates with the connecting flap 16 of the sliding handle 15, and the connecting flap 16 slides axially along the sleeve 1 in the sliding handle groove 18. The width of the sliding handle groove 18 is slightly larger than the thickness of the connecting flap 16, which can ensure that the sliding handle 15 moves smoothly.

[0054] In this solution, before the operator operates the device, the device is in the same form as in Solution 1. When operating the device, in addition to the same operations as in Solution 1, the operator can manually push the sliding handle 15, which is connected to the bifurcated push rod 13. The bifurcated push rod 13 moves within the chute 10, the guide block 11, and the guide frame 12. At this time, the scraper blades I3 and I4 undergo elastic deformation under the action of the straight bifurcated push rod 13, and the scraper blades I3 and II4 change from an arc shape to a straight state, which can be used to cut and scrape tissue or foreign matter on the upper and lower walls of the uterine cavity, realizing the multifunctional use of the scraper end.

[0055] Among them, the scraper blade I3 and the scraper blade II4 are combined together in a scissor shape. The scraper blade I3 and the scraper blade II4 are connected by a hinge shaft 19 and rotate and shear around the hinge shaft 19. The hinge shaft 19 connects the scraper blade I3 and the scraper blade II4 to the push-pull rod 2.

[0056] This device also has a third option. The handle 8, spring 9, pressure cap 6, and marking ring 7 of Option 1 are identical to those of Option 3. The scraper end of Option 3 also has scraper blades I3 and II4, which are combined together in a scissor-like manner. These blades are thin, rectangular, and the thickness of the inner ends of these blades is thinner than the outer ends, making it easy to shear foreign matter. These blades I3 and II4 are connected by a hinge shaft 19, around which they rotate and shear. The hinge shaft 19 secures these blades I3 and II4 to the push-pull rod 2. One end of the push-pull rod 2 is also flat, with a rectangular cross-section. This end is connected to the scraper blades I3 and II4 via the hinge shaft 19, while the other end is fixedly connected to the pressure cap 6. The connection portion between the push-pull rod 2 and the scraper end is slightly thinner than other portions, ensuring that when the scraper blades I3 and II4 are installed on the push-pull rod 2 through the hinge shaft 19, the thickness can be consistent with the thickness of other portions of the push-pull rod 2. The push-pull rod 2 is installed inside the sleeve 1. The sleeve 1 is the same as the sleeve 1 in the first solution, except that the hollow cross-section of the sleeve 1 in this solution is rectangular, and the sleeve 1 matches the push-pull rod 2. The size of the hollow cross-section rectangle in the sleeve 1 is slightly larger than the size of the rectangular cross-section of the push-pull rod 2, and is also slightly larger than the width of the scraper blades I3 and II4 after they are closed. This ensures that the push-pull rod 2 can move smoothly back and forth in the sleeve 1, while also ensuring that the scraper end can retract into the hollow of the sleeve 1.

[0057] In this embodiment, before the operator operates the device, the scraper end of this device follows the same principle as that of the scraper end of embodiment 1, and is retracted into the sleeve 1 under the action of the spring 9. When the device needs to be operated, the pressure cover 6 is pushed, and the pressure cover 6 drives the push-pull tube to extend out of the sleeve 1, and the scraper end extends out of the sleeve 1. At this time, the scraper blades I3 and II4 are opened. After the device is moved to the location of the foreign body through the contrast development effect of the marking ring 7, the pressure cover 6 is pulled back. At this time, the pressure cover 6 drives the push-pull rod 2, and the push-pull rod 2 drives the scraper blades I3 and II4 to retract. When the scraper end retracts to the opening of the sleeve 1, the scraper blades I3 and II4 are blocked by the end of the sleeve 1 and begin to rotate around the hinge shaft 19, changing from an open state to a closed state, shearing the foreign body until it retracts into the interior of the sleeve 1. This is suitable for cutting and scraping tissue or foreign bodies on the inner wall surface at upper and lower positions inside the uterine cavity.

[0058] Among them, the scraper blade I3 and the scraper blade II4 are partially fitted together, and the scraper blade I3 and the scraper blade II4 are connected by a connecting rod 20, which is V-shaped and has a rebound characteristic; in a natural state, the connecting rod 20 bends outward into an arc and presents an open state, and the front and rear parts of the connecting rod 20 are designed with a bent structure, the rear section is horizontal, and the front section is bent downward.

[0059] This device also has a fourth scheme. The fourth scheme mainly consists of several parts, such as a scraper end, a connecting rod 20, a sleeve 1, a push-pull rod 2, a sliding handle 21, a handle sleeve 28, and a marking ring 7. The scraper end is composed of two scraper blades, namely scraper blade I3 and scraper blade II4, which are blade-shaped, thin, and have sharp edges. In the natural state, scraper blade I3 and scraper blade II4 are partially fitted. The connecting rod 20 is fixedly connected to the scraper blades I3 and scraper blade II4. The overall shape of the connecting rod 20 is V-shaped, and the cross-section of the connecting rod 20 is circular. It is made of a material with a certain elasticity and has a certain rebound property. In the natural state, the connecting rod 20 is slightly bent outward to form a certain arc, presenting an open state. The front and rear parts of the connecting rod 20 are designed with an L-shaped bending structure, the rear section is horizontal, and the front section is bent downward and close to a vertical state. The connection between the horizontal section and the vertical section is an arc right-angle structure, which facilitates shearing of tissue or foreign matter on the inner wall surface in front of the device inside the uterine cavity.

[0060] Among them, the V-shaped top of the connecting rod 20 is connected to one end of the push-pull rod 2, and the other end of the push-pull rod 2 is connected to the sliding handle 21. Two symmetrical levers 22 are provided on both sides of the sliding handle 21. The sliding handle 21 and the spring 9 are installed in the sliding groove 23 of the handle sleeve 28. The sliding groove 23 extends out of the two outer sides of the handle sleeve 28 to form a lever groove 24. The two levers 22 are symmetrically slidably arranged in the two lever grooves 24. A cylindrical boss 25 is provided at the bottom of the handle sleeve 28, and the spring 9 is sleeved on the cylindrical boss 25.

[0061] Fixedly attached to the V-shaped top of the connecting rod 20 is a push-pull rod 2. This push-pull rod 2 is cylindrical and has the same diameter as the connecting rod 20. It is connected to a sliding handle 21. The sliding handle 21 has a cylindrical body, flanked by two symmetrical levers 22, whose axes pass through the center of the body. The levers 22 have a square cross-section, with the dimensions of the square less than half the diameter of the cylinder. The levers 22 are positioned midway along the height of the handle 21 and are slightly curved toward the curette end, forming an arc similar to that of a human fingertip, ergonomically designed for ease of operation. A rounded angle is defined at the junction of the lever 22 and the sliding handle 21. Attached to the sliding handle 21 is a spring 9, a coil spring with an outer diameter similar to the diameter of the handle 21. The sliding handle 21 and the spring 9 are installed in the sliding groove 23 of the handle sleeve 28. The handle sleeve 28 is cylindrical and hollow inside, forming the sliding groove 23. The diameter of the sliding groove 23 is slightly larger than the diameter of the sliding handle 21 and the outer diameter of the spring 9, which can ensure that the sliding handle 21 moves smoothly in the sliding groove 23. The sliding groove 23 extends out of the two outer sides of the handle sleeve 28 to form a shift rod groove 24, which is the sliding channel of the shift rod 22. The shift rod groove 24 is long and narrow, and its width is slightly larger than the thickness of the shift rod 22, ensuring the smooth movement of the shift rod 22. There is a cylindrical boss 25 at the other end of the sliding groove 23. The diameter of the boss is slightly smaller than the inner diameter of the spring 9, ensuring that the spring 9 can be mounted on this boss, thereby ensuring the stability of the spring 9.

[0062] An annular protrusion 26 is provided on the end surface of the handle sleeve 28 , and the handle sleeve 28 is connected to the sleeve 1 . A flat groove 27 is provided inside the sleeve 1 near the end of the curette.

[0063] An annular protrusion 26 is provided on the end face of the handle sleeve 28 to facilitate the operator's application of force during operation. Fixed to the handle sleeve 28 is the sleeve 1. The interior of the sleeve 1 is hollow, with a circular cross-section. The diameter of the circle is slightly larger than the diameter of the push-pull rod 2, which ensures that the push-pull rod 2 can move smoothly within the sleeve 1. Inside the sleeve 1, near the end face of the scraper blade, a flat groove 27 is provided. The width of the flat groove 27 is slightly larger than twice the diameter of a single connecting rod 20, which ensures that the connecting rod 20 can be smoothly retracted into this flat groove 27. The width of the flat groove 27 is slightly larger than the width of the push-pull rod 2.

[0064] In this solution, before the operator operates this device, the two scrapers are in a naturally open state, and the connecting rod 20 is also in an open state. When this device enters the interior of the uterine cavity, the approximate position of this device is determined by relying on the marking ring 7. When the foreign body is reached, the operator manually moves the lever 22 backward, and the lever 22 pulls the sliding handle 21, and the sliding handle 21 pulls the push-pull rod 2 to shrink into the sleeve 1. At this time, the connecting rod 20 pulls the scrapers toward the sleeve 1. During this process, the connecting rod 20 changes from an open state to a closed state, driving the scrapers to close from the open state. Relying on the shearing effect of the scrapers, the foreign body is sheared to complete the operation. This solution structure is suitable for shearing tissue or foreign body at the inner wall position of the device in the front of the uterine cavity.

[0065] The innovative technical points and beneficial effects of the present invention are at least:

[0066] 1. The edge of the curette has elastic deformation properties. After axial extension, the closed ring of the extension part elastically deforms and expands, making the edge of the curette fully elastically stretched and extended. After retraction, it can be pushed into the uterine cavity under hysteroscopy, facilitating pushing. After entering the uterine cavity, the edge of the curette can be released to perform curettage to the maximum extent.

[0067] 2. In Option 1, the curette tip forms an arc-shaped blade edge after being extended and released, which can conform to the patient's uterine cavity wall, making curettage faster, more stable, and more precise without scratching the patient's uterine cavity. Furthermore, when closed, the serrations on the curette tip interlock with each other, preventing the blade from shifting vertically during curettage, ensuring efficient curettage.

[0068] 3. The connecting petal 5 is made into a V shape. By controlling the opening and closing of the curette blades I3 and II4, the connecting petal 5 can shrink and deform and move in the sleeve 1 to form a slide rail to control the opening and closing of the curette blades I3 and II4.

[0069] 4. The second scheme of this device is provided with a bifurcated push rod 13 mechanism, and the scraper blades I3 and II4 are elastically deformable structures. They are arc-shaped in their natural state. When subjected to the structural force of the bifurcated push rod 13, the scraper blades can bend and straighten. They can adapt to various working conditions, have diverse functions, and are very easy to operate.

[0070] 5. Option 1 of this device can fit the surface of the uterine cavity well and scrape the internal wall tissue of the uterine cavity. Option 2 and Option 3 can cut and scrape the tissue or foreign matter on the upper and lower inner wall surface of the uterine cavity. Option 4 can shear the tissue or foreign matter on the inner wall surface in front of the device inside the uterine cavity. It has various shapes and a wide range of applications and can adapt to various occasions.

[0071] 6. This device is provided with a spring 9. In a natural state, the front end of the curette can be retracted into the sleeve 1. When the doctor is curettaging or cutting, he only needs to push the pressure cover 6 and let go. The curette end will automatically retract under the action of the spring 9 to complete the curettage or cutting action, saving time and effort and improving the efficiency of medical staff.

[0072] 7. The devices of several schemes are all provided with a marking ring 7, which can be used for imaging and can quickly determine the position of foreign matter, making it convenient for operators to quickly identify the position of the device, facilitate operation, and improve work efficiency.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A hysteroscopic open and close uterine cavity curette device, characterized in that: include: A scraper end, a sleeve, a push-pull rod, and a handheld end; the scraper end includes a matching scraper blade I and a scraper blade II; the push-pull rod is passed through the sleeve and connected to the scraper blade I and the scraper blade II at one end, and connected to the handheld end at the other end; the handheld end is manually controlled to pull the push-pull rod to slide in the sleeve, so that the scraper blades I and II are released or retracted in the sleeve, and then opened and closed to facilitate the scraping; The tool box of described scraper blade I and described scraper blade II has elastic deformation characteristic; under the state of not being subjected to external force, described scraper blade I and described scraper blade II bend into arc; the arc inner sides of described scraper blade I and described scraper blade II are provided with slide groove, guide block and guide frame; the two guide blocks of each group are symmetrically distributed on both sides of the slide groove, and the edges of described scraper blade I and described scraper blade II are respectively distributed with described guide frame, and the guide block and guide frame are distributed on both sides of described slide groove, and the forked push rod cooperates with the guide frame, guide block and slide groove, and the forked push rod is V-shaped, and the two forks of described forked push rod are respectively passed through the guide frame and the slide groove in the middle of guide block at the lower part of described scraper blade I and described scraper blade II, and the forked push rod is connected to one end of push rod, and the other end of push rod is connected to sliding handle, and push rod is sleeved in the push-pull rod, and the sliding handle is sleeved on the sleeve and slides freely along the sleeve axial direction; A connecting flap is provided on the inner side of the sliding handle, and the connecting flap is connected to the push rod. A block-shaped protrusion is provided on the outer side of the sliding handle. A sliding handle groove is provided at corresponding positions on the sleeve and the push-pull rod. The connecting flap slides axially along the sleeve in the sliding handle groove. The sliding handle groove matches the connecting flap of the sliding handle, and the connecting flap slides along the axial direction of the sleeve in the sliding handle groove.

2. The hysteroscopic open and close uterine cavity curette device according to claim 1, characterized in that: The scraper blade I and the scraper blade II are arranged symmetrically, and both the scraper blade I and the scraper blade II are arc-shaped tile-like structures. The bottom end edges of the scraper blade I and the scraper blade II are provided with cutting edges. The cutting edges of the scraper blade I and the scraper blade II have elastic deformation characteristics, and the opposite sides of the scraper blade I and the scraper blade II are provided with serrations; under force, the scraper blade I and the scraper blade II are staggered with each other at the serrations and fully occluded and fitted.

3. The hysteroscopic open and close uterine cavity curette device according to claim 2, characterized in that: The upper ends of the scraper blade I and the scraper blade II are connected to a connecting petal near the outer side, and the connecting petal has two branches. The two branches at one end of the connecting petal are respectively connected to the scraper blade I and the scraper blade II, and the other end of the connecting petal is connected to the push-pull rod. The connecting petal has elastic deformation characteristics; when there is no external force, the two branches of the connecting petal elastically open to the corresponding two sides.

4. The hysteroscopic open and close uterine cavity curette device according to claim 3, characterized in that: The handheld end includes a pressure cover, a marking ring is provided on the outer surface of the sleeve near the end of the scraper, the sleeve is connected to a handle, the push-pull rod passes through the sleeve and the handle and is connected to the pressure cover, and a spring is provided on the push-pull rod between the handle and the pressure cover.

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