A uterine curettage device

Abstract

The application discloses a uterine curettage device for gynaecology and obstetrics, which comprises a handle sleeve, a connecting sleeve arranged at one end of the handle sleeve, a scraping rod capable of elastically deforming and fixed at one end of the connecting sleeve, an arc-shaped guide rod fixedly connected to the other end of the scraping rod and penetrating through the connecting sleeve and the handle sleeve, and a circular arc motion mechanism for driving the arc-shaped guide rod to move in a circular arc. The scraping rod comprises an arc-shaped spiral section, a transition section and a circular arc section, the transition section is arranged between the arc-shaped spiral section and the circular arc section, the circular arc section is connected to the arc-shaped guide rod, and a connecting section is arranged between the end of the arc-shaped spiral section away from the transition section and the connecting sleeve. The application can effectively improve the scraping efficiency and reduce the damage to the uterus.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a curettage instrument for obstetrics and gynecology. Background Technology

[0002] Existing gynecological curettage instruments often employ simple scraping rods or scraping spoons, resulting in low scraping efficiency and difficulty in quickly scraping endometrial tissue. This leads to longer operation times and increases the pain and infection risk experienced by patients. Summary of the Invention

[0003] The purpose of this invention is to provide a gynecological curettage instrument to improve curettage efficiency and shorten operation time.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a gynecological curettage instrument, comprising: a handle sleeve; a connecting sleeve disposed at one end of the handle sleeve; a scraping rod, which is elastically deformable, and one end of the scraping rod is fixed to the connecting sleeve; an arc-shaped guide rod, which is fixedly connected to the other end of the scraping rod and penetrates the connecting sleeve and the handle sleeve; and an arc-shaped motion mechanism for driving the arc-shaped guide rod to move in an arc; wherein the scraping rod includes an arc-shaped spiral segment, a transition segment, and an arc segment, the transition segment is disposed between the arc-shaped spiral segment and the arc segment, the arc segment is connected to the arc-shaped guide rod, and a connecting segment is connected between the end of the arc-shaped spiral segment away from the transition segment and the connecting sleeve.

[0005] Furthermore, it also includes through holes, with multiple through holes provided throughout the arc-shaped spiral segment.

[0006] Furthermore, it also includes elongated holes, with elongated holes running through the arc segment.

[0007] Furthermore, the circular motion mechanism includes: an arc-shaped slide rail, which is disposed inside the handle sleeve; an arc-shaped slider, which is fitted inside the arc-shaped slide rail; a drive assembly, which drives the arc-shaped slider to move along the arc-shaped slide rail; and a reset assembly, which drives the drive assembly to reset; wherein, the arc-shaped guide rod is fixedly connected to the end of the arc-shaped guide rod away from the scraper rod.

[0008] Furthermore, the drive assembly includes: a connecting rod, one end of which is hinged to the arc-shaped slider; and a drive rod, one end of which is rotatably mounted on the handle sleeve, and the other end of which is hinged to the other end of the connecting rod.

[0009] Furthermore, the drive assembly also includes a pressing lever, which is located on one side of the drive lever.

[0010] Furthermore, the reset assembly uses a spring, which is positioned between the drive rod and the inner wall of one side of the handle sleeve.

[0011] Furthermore, the handle sleeve has an opening through which the pressing rod and the drive rod pass.

[0012] Furthermore, the center of the arc-shaped guide rod coincides with the axis of the inner ring surface of the arc-shaped slider and the axis of the outer ring surface of the arc-shaped slider.

[0013] Furthermore, an arc-shaped limiting hole is provided through the connecting sleeve, which is adapted to the arc-shaped guide rod, and the arc-shaped guide rod passes through the arc-shaped limiting hole.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows.

[0015] 1. The scraper of the present invention is elastically deformable. By pressing and releasing the pressing rod, the arc-shaped spiral section can improve scraping efficiency during the process of elongation deformation or shortening reset. At the same time, the overall surface of the scraper is smooth, which helps to reduce damage to the uterus.

[0016] 2. During the scraping process, the present invention can also operate the handle sleeve to use the arc segment for scraping, which can easily meet different usage needs and facilitate scraping off the inner membrane tissue. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the arc motion mechanism and arc-shaped guide rod installation of the present invention.

[0020] Figure 3 This is a schematic diagram of the circular arc motion mechanism and the arc-shaped guide rod of the present invention.

[0021] Figure 4 This is a schematic diagram of the arc-shaped guide rod and the connecting sleeve of the present invention.

[0022] Figure 5 This is a schematic diagram of the pressing rod, driving rod, and connecting rod of the present invention passing through the opening.

[0023] Figure 6 This is a schematic diagram of the scraper structure of the present invention.

[0024] Figure 7 This is a schematic diagram showing the positions of the through hole and the elongated hole in this invention.

[0025] In the diagram: 1. Handle sleeve; 11. Opening; 2. Connecting sleeve; 21. Arc-shaped limiting hole; 3. Scraper rod; 31. Arc-shaped spiral section; 311. Through hole; 32. Circular arc section; 321. Long strip hole; 33. Transition section; 34. Connecting section; 4. Arc-shaped guide rod; 5. Circular arc motion mechanism; 51. Arc-shaped slide rail; 52. Arc-shaped slider; 53. Drive assembly; 531. Drive rod; 532. Connecting rod; 533. Pressing rod; 54. Reset assembly; 541. Spring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figures 1-7 The present invention provides a technical solution: a curettage instrument for obstetrics and gynecology, comprising a handle sleeve 1, one end of which is fixedly connected to a connecting sleeve 2; a scraping rod 3 is connected to the connecting sleeve 2, one end of which is fixedly connected to the connecting sleeve 2, and the other end of which is fixedly connected to an arc-shaped guide rod 4; the arc-shaped guide rod 4 penetrates the connecting sleeve 2 and the handle sleeve 1, and a portion of the arc-shaped guide rod 4 is located inside the handle sleeve 1; specifically, the connecting sleeve 2 is provided with an arc-shaped limiting hole 21 adapted to the arc-shaped guide rod 4, and the handle sleeve 1 is provided with a round hole structure adapted to the arc-shaped guide rod 4, through which the arc-shaped guide rod 4 passes.

[0029] An arc motion mechanism 5 is provided on the handle sleeve 1. The arc motion mechanism 5 is used to drive the arc-shaped guide rod 4 to move in an arc. Specifically, it is used to drive the arc-shaped guide rod 4 to move around the center of the center line of the arc-shaped guide rod 4.

[0030] The scraper rod 3 includes an arc-shaped spiral section 31, which is a spiral rod structure and is generally arc-shaped. One end of the arc-shaped spiral section 31 is connected to the connecting sleeve 2 by a connecting section 34, which is cylindrical. The scraper rod 3 also includes an arc-shaped section 32, one end of which is connected to the other end of the arc-shaped spiral section 31 by a transition section 33. The arc-shaped section 32 is an arc-shaped rod structure. Both the arc-shaped section 32 and the transition section 33 are arc-shaped rod structures. The end of the arc-shaped section 32 away from the transition section 33 is fixedly connected to an arc-shaped guide rod 4. That is, the scraper rod 3 is formed by sequentially splicing the connecting section 34, the arc-shaped spiral section 31, the transition section 33, and the arc-shaped section 32.

[0031] like Figure 3 As shown, the arc-shaped spiral segment 31 protrudes to the left, while the circular arc segment 32 protrudes to the right, meaning that the protruding directions of the arc-shaped spiral segment 31 and the circular arc segment 32 are opposite.

[0032] The scraper rod 3 is elastically deformable. Specifically, the arc-shaped spiral section 31 is made of a metal material with good elastic properties, such as nickel-titanium shape memory alloy, while the connecting section 34, the arc section 32 and the transition section 33 can be made of stainless steel or alloy. In addition, the arc-shaped guide rod 4 is also made of stainless steel or alloy.

[0033] The circular motion mechanism 5 includes an arc-shaped slide rail 51 disposed inside the handle sleeve 1, an arc-shaped slider 52 fitted on the arc-shaped slide rail 51, and an arc-shaped guide rod 4 fixedly connected to the arc-shaped slider 52 at one end away from the arc segment 32. The center of the center line of the arc-shaped guide rod 4 coincides with the axis of the arc-shaped slider 52, that is, the axis of the inner ring surface of the arc-shaped slider 52 and the axis of the outer ring surface of the arc-shaped slider 52 both coincide with the center of the center line of the arc-shaped guide rod 4. When the arc-shaped slider 52 moves along the arc-shaped slide rail 51, the arc-shaped slider 52 moves in an arc around its own axis, thereby ensuring that the arc-shaped guide rod 4 moves around the axis of the arc-shaped slider 52. The circular motion mechanism 5 also includes a drive assembly 53, which is used to drive the arc-shaped slider 52 to move along the arc-shaped slide rail 51.

[0034] The drive assembly 53 includes a connecting rod 532 and a drive rod 531. One end of the connecting rod 532 is hinged to the arc-shaped slider 52, and the other end of the connecting rod 532 is hinged to one end of the drive rod 531. The other end of the drive rod 531 is movably mounted on the handle sleeve 1 via a rotating shaft. Specifically, the rotating shaft is usually movably connected to the handle sleeve 1 by a bearing, and the drive rod 531 is fixedly sleeved on the outside of the rotating shaft. The arc motion mechanism 5 also includes a reset assembly 54, which is used to reset the drive rod 531.

[0035] The drive assembly 53 also includes a pressing rod 533, which is fixedly disposed on one side of the drive rod 531; meanwhile, an opening 11 is provided on the handle sleeve 1, such as Figure 2 As shown, in the initial state, the pressing rod 533, the driving rod 531, and the connecting rod 532 all pass through the opening 11.

[0036] In this embodiment, pressing the pressing rod 533 causes the drive rod 531 to rotate, which in turn causes the connecting rod 532 to move. Since the two ends of the connecting rod 532 are hinged to the arc-shaped slider 52 and the drive rod 531 respectively, pressing the pressing rod 533 drives the arc-shaped slider 52 to move along the arc-shaped slide rail 51, thereby causing the arc-shaped guide rod 4 to extend out of the arc-shaped limiting hole 21. The arc-shaped guide rod 4 drives the arc segment 32 to move. Since the arc-shaped spiral segment 31 is deformable, it drives the arc-shaped spiral segment 31 to be elongated, changing the shape of the arc-shaped spiral segment 31 and reducing the maximum width of the scraper rod 3, thus facilitating the insertion of the scraper rod 3 into the uterus. When the pressing rod 533 is released, the drive rod 531 is easily reset under the action of the reset component 54, thereby realizing the reset of the arc-shaped slider 52 and the arc-shaped guide rod 4. After the arc-shaped guide rod 4 is reset, the scraper rod 3 can return to its original state, i.e. Figure 3 The state shown.

[0037] In this embodiment, when using the curettage instrument, the vagina and cervix are first dilated using an external medical instrument. After dilation, the handle sleeve 1 is held and the pressing rod 533 is pressed until the end of the pressing rod 533 touches the outer wall of the arc-shaped slide rail 51. At this time, the arc-shaped slide rail 51 blocks the pressing rod 533. Then, the deformed scraping rod 3 is inserted into the uterus, while the pressing rod 533, connecting rod 532, etc. are outside the patient's body. Then, the pressing rod 533 is released, and under the action of the reset component 54, the arc-shaped slider 52, arc-shaped slide rail 532, etc., move out of the uterus. The guide rod 4 is reset, and the scraper 3 returns to its original state. With the assistance of external visual equipment, the protruding side of the arc-shaped spiral segment 31 is pressed against the inner wall of the uterus. By operating the handle sleeve 1, the arc-shaped spiral segment 31 scrapes the endometrial tissue. During the scraping process, by repeatedly pressing and releasing the pressing rod 533 with appropriate force, the arc-shaped spiral segment 31 has a scraping effect in both the horizontal and vertical directions during the process of stretching deformation or re-shortening and resetting, thereby improving the scraping efficiency of the arc-shaped spiral segment 31.

[0038] Meanwhile, the arc-shaped spiral segment 31, the circular arc segment 32, and the transition segment 33 are all rod-shaped structures, meaning the entire surface of the scraper 3 is smooth, and the arc-shaped spiral segment 31 can elastically deform. Therefore, while ensuring a good scraping effect, it can effectively reduce damage to the uterus. After the embryo is removed, the scraper and the embryo can be removed. During the removal of the scraper, the pressing rod 533 should be kept pressed and the end of the pressing rod 533 should contact the arc-shaped slide rail 51 to facilitate the removal of the scraper. In addition, after the embryo is removed, an external suction device can be used to clean the uterus of any remaining residue.

[0039] Example 2

[0040] See again Figure 2 , Figure 3 as well as Figure 4Multiple through holes 311 are provided through the arc-shaped spiral segment 31, and an elongated hole 321 is provided through the arc segment 32. The through-holes 311 are aligned with the through-holes 321; the through-holes 311 are horizontal, and the axis of the through-holes 311 is also horizontal; that is, as shown... Figure 3 As shown, the through-hole 311 is in the left-right direction; and the edges of the through-hole 311 and the elongated hole 321 are rounded. Multiple through-holes 311 are provided on the arc-shaped spiral segment 31. During the scraping process using the arc-shaped spiral segment 31, the scraping efficiency can be improved, thereby helping to shorten the operation time.

[0041] Furthermore, during the scraping process, when the arc-shaped spiral segment 31 is inconvenient to scrape the endometrial tissue, the handle sleeve 1 can be operated so that the protruding side of the arc segment 32 abuts against the inner wall of the uterus. Since the arc segment 32 has a through hole 321, the scraping operation can also be performed using the protruding side of the arc segment 32. When using the arc segment 32, the pressure bar 533 can be continuously pressed or not pressed, that is, there is no need to repeatedly press and release the pressure bar 533 during this process. Therefore, it can easily meet different usage needs and facilitate the scraping of endometrial tissue.

[0042] Example 3

[0043] See Figure 2 and Figure 4 Based on Embodiment 2, this embodiment uses a spring 541 for the reset component 54. The spring 541 is disposed between the drive rod 531 and the inner wall of one side of the handle sleeve 1. Specifically, one end of the spring 541 can be connected to the drive rod 531, and the other end of the spring 541 abuts against the inner wall of the handle sleeve 1. When the pressing rod 533 is pressed, the drive rod 531 rotates, which causes the spring 541 to compress and deform. When the pressing rod 533 is released, the elastic deformation of the spring 541 facilitates the reset of the drive rod 531, thereby facilitating the reset of the arc-shaped slider 52, the arc-shaped guide rod 4, etc.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gynecological curettage instrument, comprising a handle sleeve (1), characterized in that, Also includes: Connecting sleeve (2), the connecting sleeve (2) is set at one end of the handle sleeve (1); The scraper (3) is elastically deformable, and one end of the scraper (3) is fixed on the connecting sleeve (2); Arc-shaped guide rod (4) is fixedly connected to the other end of scraper rod (3), and arc-shaped guide rod (4) penetrates the connecting sleeve (2) and handle sleeve (1). The circular motion mechanism (5) is used to drive the arc-shaped guide rod (4) to move in a circular arc. The scraper (3) includes an arc-shaped spiral section (31), a transition section (33), and a circular arc section (32). The arc-shaped spiral section (31), the transition section (33), and the circular arc section (32) are all rod-shaped structures. The transition section (33) is located between the arc-shaped spiral section (31) and the circular arc section (32). The circular arc section (32) is connected to the arc-shaped guide rod (4). The end of the arc-shaped spiral section (31) away from the transition section (33) is connected to the connecting sleeve (2) by a connecting section (34). Multiple through holes (311) are provided through the arc-shaped spiral segment (31); A long hole (321) is provided through the arc segment (32); The circular motion mechanism (5) includes: Arc-shaped slide rail (51) is located inside the handle sleeve (1); The arc-shaped slider (52) is fitted inside the arc-shaped slide rail (51); Drive component (53) is used to drive the arc slider (52) to move along the arc slide rail (51); Reset component (54) is used to drive drive component (53) to reset; The arc-shaped guide rod (4) is fixedly connected to the end of the arc-shaped guide rod (4) away from the scraper rod (3); The driver component (53) includes: Link (532), one end of which is hinged to the arc-shaped slider (52); Drive rod (531), one end of drive rod (531) is rotatably mounted on handle sleeve (1), and the other end of drive rod (531) is hinged to the other end of connecting rod (532); The drive assembly (53) also includes a pressing lever (533), which is disposed on one side of the drive lever (531); By pressing the pressing rod (533), the arc-shaped spiral segment (31) is stretched. When the shape of the arc-shaped spiral segment (31) changes and the maximum width of the scraping rod (3) is reduced, the scraping rod (3) is inserted into the uterus. During the scraping process, the arc-shaped spiral segment (31) is driven to stretch or shorten and reset by repeatedly pressing and releasing the pressing lever (533).

2. The obstetric curettage instrument according to claim 1, characterized in that, The reset assembly (54) uses a spring (541), which is located between the drive rod (531) and the inner wall of one side of the handle sleeve (1).

3. The obstetric curettage instrument according to claim 1, characterized in that, An opening (11) is provided on the handle sleeve (1), through which the pressing rod (533) and the drive rod (531) pass.

4. The obstetric curettage instrument according to claim 1, characterized in that, The center of the arc guide rod (4) coincides with the inner ring axis of the arc slider (52) and the outer ring axis of the arc slider (52).

5. A gynecological curettage instrument according to claim 1, characterized in that, An arc-shaped limiting hole (21) is provided through the connecting sleeve (2). The arc-shaped limiting hole (21) is adapted to the arc-shaped guide rod (4), and the arc-shaped guide rod (4) passes through the arc-shaped limiting hole (21).

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