Support device for uterine drainage and method of use thereof

Abstract

The present invention relates to the field of uterine cavity medical equipment, and in particular to a support device for uterine cavity drainage and a method for using the same. The support device for uterine cavity drainage comprises: a support body, the support body comprising a support plate and a drainage tube; the support plate is configured to fit the shape of the inner wall of the uterine cavity, one end of the drainage tube is fixedly connected to the support plate, and when the support plate is inserted into the uterine cavity, the drainage tube is located inside the cervix; a disassembly assembly, the disassembly assembly comprising a first sleeve and a push rod, the outer diameter of the push rod being larger than the inner diameter of the drainage tube and smaller than the inner diameter of the first sleeve; when the support plate is wound along the width direction, the support body can be inserted into the interior of the first sleeve along the axial direction of the first sleeve; the push rod inserted into the first sleeve can push the support body located in the first sleeve out of the first sleeve. The support body can be inserted without dilating the patient's cervix with a dilator, thereby reducing the patient's pain during the insertion of the support body.

Description

Technical Field

[0001] The present invention relates to the field of uterine cavity medical equipment, and in particular to a support device for uterine cavity drainage and a method of using the same. Background Art

[0002] Intrauterine adhesions are a pathological phenomenon in which the endometrium is damaged, resulting in partial or complete adhesions in the uterine cavity (e.g., due to induced abortion, uterine curettage, myomectomy, submucosal myomectomy, hysteroscopic endometrial resection, mid-term induction of labor, or full-term postpartum uterine curettage). These adhesions typically cause amenorrhea, oligomenorrhea, dysmenorrhea, recurrent miscarriage, and infertility.

[0003] Clinical treatment usually involves surgical separation of the adhered and closed uterine cavity. After separation, a support body is usually placed to prevent the endometrial wound at the adhesion site of the surgically separated uterine cavity from adhering again during healing, thereby improving the quality of postoperative uterine cavity recovery.

[0004] However, during the process of inserting the existing support body into the patient's uterine cavity, the patient's cervix usually needs to be expanded (usually to 3-4 cm) using a dilator to reach the required size for inserting the support body, which increases the patient's pain. Summary of the Invention

[0005] The purpose of the present invention is to provide a support device for intrauterine drainage and a method of use thereof, which can at least partially overcome the above-mentioned technical problems and thereby achieve the insertion of a support body without expanding the patient's cervix through a dilator, thereby reducing the patient's pain during the insertion of the support body.

[0006] The first aspect of the present invention provides a support device for uterine cavity drainage, comprising: a support body, the support body comprising a support plate and a drainage tube; the support plate is configured to fit the shape of the inner wall of the uterine cavity, one end of the drainage tube is fixedly connected to the support plate, and when the support plate is inserted into the uterine cavity, the drainage tube is located in the cervix, the end of the drainage tube away from the support plate is located outside the cervix, and the inner cavity of the drainage tube is connected to the uterine cavity; a disassembly and assembly component, the disassembly and assembly component comprising a first sleeve and a push rod, the outer diameter of the push rod is larger than the inner diameter of the drainage tube and smaller than the inner diameter of the first sleeve; when the support plate is wound along the width direction, the support body can be inserted into the interior of the first sleeve along the axial direction of the first sleeve; when the support body wound on the support plate is located inside the first sleeve, the push rod inserted into the first sleeve can abut against the end of the drainage tube away from the support body and push the support body to the outside of the first sleeve.

[0007] Furthermore, a plurality of protrusions are provided on both side surfaces of the support plate.

[0008] Furthermore, the edge thickness of the support plate is greater than the inner thickness, and the edge of the support plate is made of elastic material.

[0009] Furthermore, the disassembly and assembly component also includes a second sleeve, the outer diameter of the second sleeve is equal to the inner diameter of the first sleeve, and the inner diameter of the second sleeve is equal to the outer diameter of the push rod; a first elastic plate is installed on the second sleeve, one end of the first elastic plate is fixedly connected to the inner wall of the second sleeve, and the other end is located outside the second sleeve; from the fixed end to the free end of the first elastic plate, the distance between the first elastic plate and the axis of the second sleeve gradually decreases; a claw is fixedly connected to the free end of the first elastic plate; from the fixed end to the free end of the claw, the distance between the claw and the axis of the second sleeve gradually increases; the radius of the circumscribed circle of the contour of the claw projected along the axial direction of the second sleeve is smaller than the inner diameter of the drainage tube.

[0010] Furthermore, a plurality of circumferential grooves are provided on the inner wall of the drainage tube.

[0011] Furthermore, at least three second elastic plates are installed at one end of the second sleeve where the first elastic plate is installed, and each second elastic plate is evenly distributed in a circular array along the axis of the second sleeve; one end of the second elastic plate is fixedly connected to the end face of the second sleeve, and the other end extends in a direction away from the second sleeve; from the fixed end to the free end of the second elastic plate, the distance between the outer wall of the second elastic plate and the axis of the second sleeve gradually decreases; the radius of the inscribed circle of the contour of each second elastic plate projected along the axial direction of the second sleeve is greater than the outer diameter of the drainage tube; the axial distance between the free end of the second elastic plate and the second sleeve is greater than the axial distance between the free end of the claw and the second sleeve; an annular ridge is provided in the first sleeve, and the distance between the ridge and the insertion end of the first sleeve is equal to the length of the drainage tube.

[0012] Another aspect of the present invention provides a method for using a support device for intrauterine drainage, based on the aforementioned support device for intrauterine drainage, specifically, when the support body is placed into the uterus of a preset object, comprising: S11, winding the support plate in the width direction, and inserting the support body after the support plate is wound into the first sleeve, so that the end of the support plate away from the drainage tube is flush with the insertion end; inserting the push rod into the first sleeve from the side away from the support body until the push rod abuts against the drainage tube of the support body; S12, expanding the vagina of the preset object by a vaginal dilator until the preset object is flush with the insertion end; The external cervical os of the preset object is exposed to the operator's field of vision; S13, inserting the insertion end of the first sleeve equipped with a support body and a push rod from the external cervical os into the uterine cavity of the preset object until the wound support plate is located in the uterine cavity of the preset object; S14, maintaining the position of the push rod and pulling the first sleeve out of the body of the preset object until the first sleeve is separated from the support body; S15, pulling the push rod and the first sleeve separated from the support body out of the body of the preset object together, canceling the expansion of the vagina, and completing the operation of placing the support body into the uterine cavity of the preset object.

[0013] Furthermore, before S13, it also includes: pre-measuring the cervical length and uterine cavity length of the preset object; the insertion depth of the insertion end of the first sleeve equipped with a support body and a push rod from the external cervical os into the uterine cavity of the preset object is the sum of the cervical length and the uterine cavity length.

[0014] Furthermore, when the support body inserted into the uterus of the preset object is taken out, the method includes: 21, expanding the vagina of the preset object by using a vaginal dilation device until the external cervical os of the preset object and the drainage tube of the support body are exposed to the operator's field of vision; S22, sleeve the insertion end of the first sleeve on the outside of the drainage tube, and insert the first sleeve from the external cervical os into the uterine cavity of the preset object; S23, maintaining the position of the first sleeve, inserting the end of the second sleeve installed with the first elastic plate into the first sleeve until the claw is located inside the drainage tube; S24, maintaining the position of the first sleeve and the second sleeve tube, insert the push rod into the second sleeve from the side away from the support body, so that the head of the push rod abuts against the inner wall of the first elastic plate and pushes the first elastic plate to expand outward until the free end of the claw abuts against the inner wall of the drainage tube; S25, maintain the position of the first sleeve, and pull the second sleeve and the push rod out of the body of the preset object together until the support body enters the first sleeve; S26, pull the first sleeve, the second sleeve and the push rod out of the body of the preset object together, cancel the expansion of the vagina, and complete the operation of removing the support body inserted into the uterine cavity of the preset object.

[0015] Furthermore, in S22, the insertion depth of the first cannula from the external cervical os into the uterine cavity of the preset object is equal to the cervical length of the preset object; in S25, the pulling distance of the second cannula and the push rod together toward the outside of the body of the preset object is greater than the length of the support plate of the support body.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 1. The embodiments of the present disclosure provide a support device for intrauterine drainage and a method of use thereof, which can achieve insertion and removal of the support body without dilating the patient's cervix with a dilator, thereby reducing the patient's pain during insertion and removal of the support body;

[0018] 2. The embodiment of the present disclosure provides a support device for intrauterine drainage and a method of use thereof. By providing a second elastic plate, the drainage tube and the second sleeve can be aligned in advance during the removal of the support body, thereby avoiding accidentally pushing the support body toward the interior of the uterine cavity during the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a support body drawn according to an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the three-dimensional structure of a second sleeve drawn according to an embodiment of the present invention;

[0022] Figure 3 A cross-sectional view of the support device for uterine drainage drawn according to an embodiment of the present invention when the support body inserted into the uterus of a preset subject is removed;

[0023] Figure 4 Another cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset subject is removed according to an embodiment of the present invention;

[0024] Figure 5 Another cross-sectional view of the support device for uterine drainage drawn according to an embodiment of the present invention when the support body inserted into the uterus of a preset subject is removed;

[0025] Figure 6 This is another cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset subject is removed according to an embodiment of the present invention.

[0026] Markings and corresponding parts names in the accompanying drawings:

[0027] 11-support plate; 111-protrusion; 12-drainage tube; 121-groove; 2-first sleeve; 21-convex ridge; 3-push rod; 4-second sleeve; 41-first elastic plate; 42-claw; 43-second elastic plate. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0029] Intrauterine adhesions are a pathological phenomenon in which the endometrium is damaged, resulting in partial or complete adhesions in the uterine cavity (e.g., due to induced abortion, uterine curettage, myomectomy, submucosal myomectomy, hysteroscopic endometrial resection, mid-term induction of labor, or full-term postpartum uterine curettage). These adhesions typically cause amenorrhea, oligomenorrhea, dysmenorrhea, recurrent miscarriage, and infertility.

[0030] Clinical treatment usually involves surgical separation of the adhered and closed uterine cavity. After separation, a support body is usually placed to prevent the endometrial wound at the adhesion site of the surgically separated uterine cavity from adhering again during healing, thereby improving the quality of postoperative uterine cavity recovery.

[0031] However, during the process of inserting the existing support body into the patient's uterine cavity, the patient's cervix usually needs to be expanded using a dilator (usually to 3-4 cm) to achieve the required size for inserting the support body (stent width + operating space), which increases the patient's pain.

[0032] In this regard, the present invention provides a support device for intrauterine drainage and a method for using the same, which can achieve the placement of a support body without expanding the patient's cervix through a dilator, thereby reducing the patient's pain during the placement of the support body.

[0033] Example 1:

[0034] like Figure 1 As shown, the support device for uterine drainage provided in this embodiment includes:

[0035] A support body, comprising a support plate 11 and a drainage tube 12;

[0036] The support plate 11 is configured to fit the shape of the inner wall of the uterine cavity. One end of the drainage tube 12 is fixedly connected to the support plate 11. When the support plate 11 is placed in the uterine cavity, the drainage tube 12 is located inside the cervix, and the end of the drainage tube 12 away from the support plate 11 is located outside the cervix, and the inner cavity of the drainage tube 12 is connected to the uterine cavity.

[0037] A disassembly assembly, comprising a first sleeve 2 and a push rod 3, wherein the outer diameter of the push rod 3 is larger than the inner diameter of the drainage tube 12 and smaller than the inner diameter of the first sleeve 2; when the support plate 11 is wound along the width direction, the support body can be inserted into the interior of the first sleeve 2 along the axial direction of the first sleeve 2;

[0038] When the support body wound around the support plate 11 is located inside the first sleeve 2 , the push rod 3 inserted into the first sleeve 2 can abut against the end of the drainage tube 12 away from the support body and push the support body out of the first sleeve 2 .

[0039] It should be understood that "the support plate 11 is configured to conform to the shape of the inner wall of the uterine cavity" specifically means that the entire surface of the support plate 11 is in the shape of an isosceles triangle (matching the inverted triangle shape of the uterine cavity), the corners of this isosceles triangle are rounded, the base of the isosceles triangle corresponds to the uterine fundus, and the apex corresponds to the internal cervical os (correspondingly, the size of the base is the width of the support plate 11, and the distance from the apex to the base is the length of the support plate 11). Accordingly, one end of the drainage tube 12 is fixedly connected to the apex of the isosceles triangle.

[0040] Obviously, the length of the drainage tube 12 is greater than the length of the cervix.

[0041] Therefore, when the support plate 11 is placed in the patient's uterine cavity, the drainage tube 12 can, on the one hand, support the patient's entire cervix, thereby avoiding adhesions in the cervix; on the other hand, the drainage tube 12 can also be used to drain the accumulated fluid in the patient's uterine cavity, and one end of the drainage tube 12 is located outside the cervix to facilitate the subsequent removal of the support body.

[0042] Preferably, the edge thickness of the support plate 11 is greater than the inner thickness, and the edge of the support plate 11 is made of elastic material. More preferably, the edge thickness of the support plate 11 is 1-1.4 mm, and the inner thickness of the support plate 11 is 0.6-1 mm.

[0043] Thus, when the support body wound around the support plate 11 is located inside the first sleeve 2, the elastic edge of the support plate 11 can force the wound support plate 11 to have a tendency to unfold, and then the outer side of the wound support plate 11 abuts against the inner wall of the first sleeve 2, so that the support body does not slide on its own inside the first sleeve 2; in addition, after the support body wound around the support plate 11 is pushed out of the first sleeve 2 by the push rod 3, under the elastic action of the elastic edge of the support plate 11, the support plate 11 can unfold and return to its plate shape before being wound; and when the support plate 11 is located in the patient's uterine cavity, the relatively large edge of the support plate 11 can enable the support plate 11 to maintain its initial plate structure, thereby providing good support for the uterine cavity. Obviously, the smooth edge of the support plate 11 can prevent it from causing damage to the patient's uterine cavity.

[0044] Accordingly, the support device for uterine drainage provided in this embodiment can be implemented by winding the support plate 11 in the width direction, then inserting the support body wrapped with the support plate 11 into the first cannula 2, and then inserting the first cannula equipped with the support body into the patient's uterine cavity; using the pushing action of the push rod 3 to pull out the first cannula 2 while retaining the support plate 11 in the patient's uterine cavity, the support plate 11 is elastically expanded into a plate shape to support the uterine cavity. This achieves the completion of the insertion of the support body without dilating the patient's cervix with a dilator, greatly reducing the pain caused to the patient during the insertion of the support body.

[0045] Preferably, the support plate 11 has various lengths and widths to adapt to the depth and width of the uterine cavity of different patients. In a specific practice of this embodiment, the support plate 11 has various models as shown in the following table.

[0046] Table 1: Support body model table

[0047]

[0048] Preferably, a plurality of protrusions 111 are provided on both side surfaces of the support plate 11. Obviously, the protrusions 111 are smooth protrusions 111.

[0049] Therefore, after the support plate 11 is placed in the patient's uterine cavity (obviously, the support plate 11 is located in the uterine cavity and the drainage tube 12 is located in the cervix), these protrusions 111 can form multiple point supports during the period when the support plate 11 remains in the patient's uterine cavity, thereby avoiding the patient's uterine cavity wall from adhering to the support plate 11 during the period when the support plate 11 remains, and further avoiding the difficulty in removing the support body or even further damage to the patient's endometrium due to the adhesion of the uterine cavity wall to the support plate 11 when it needs to be removed.

[0050] Example 2:

[0051] like Figure 2 As shown, this embodiment is based on embodiment 1, except that, in this embodiment:

[0052] The disassembly assembly further includes a second sleeve 4, the outer diameter of the second sleeve 4 is equal to the inner diameter of the first sleeve 2, and the inner diameter of the second sleeve 4 is equal to the outer diameter of the push rod 3;

[0053] A first elastic plate 41 is mounted on the second sleeve 4. One end of the first elastic plate 41 is fixedly connected to the inner wall of the second sleeve 4, and the other end is located outside the second sleeve 4. From the fixed end to the free end of the first elastic plate 41, the distance between the first elastic plate 41 and the axis of the second sleeve 4 gradually decreases.

[0054] A claw 42 is fixedly connected to the free end of the first elastic plate 41; the distance between the claw 42 and the axis of the second sleeve 4 gradually increases from the fixed end to the free end of the claw 42;

[0055] The radius of the circumscribed circle of the outline of the claw 42 projected along the axial direction of the second sleeve 4 is smaller than the inner diameter of the drainage tube 12 .

[0056] Accordingly, when it is necessary to remove the support body in the patient's uterus, the first cannula 2 can be first inserted along the patient's cervix (in this process, it should be ensured that the drainage tube 12 is located inside the first cannula 2) into the uterine cavity; and then the second cannula 4 can be inserted along the inside of the first cannula 2 until the claws 42 enter the drainage tube 12 (as shown in FIG. Figure 5 Then, the push rod 3 is inserted into the second sleeve 4, and the front end of the push rod 3 is used to push the inner side of the first elastic plate 41, so that the free end of the claw 42 bulges outward, thereby making the free end of the claw 42 abut against the inner wall of the drainage tube 12 (as shown). Figure 6 As shown, during this process, the second cannula 4 remains stationary). Thereafter, the push rod 3 and the second cannula 4 are pulled out of the patient's body together, and the drainage tube 12 is pulled by the claw 42, so that the support plate 11 enters the first cannula 2. After the support plate 11 enters the drainage tube 12, the first cannula 2, the second cannula 4, and the push rod 3 are pulled out of the patient's body together, thus completing the support body removal operation. In this way, the operation of dilating the cervix can be avoided during the process of removing the support body from the patient's uterine cavity, reducing the patient's pain.

[0057] It is worth noting that, when the push rod 3 and the second sleeve 4 are pulled out of the patient's body together, the drainage tube 12 is pulled by the claw 42 to make the support plate 11 enter the first sleeve 2, since the end of the first sleeve 2 is located inside the uterine cavity, when the support plate 11 is pulled out, the edge of the support plate 11 directly abuts against the end of the first sleeve 2. As the second sleeve 4 and the push rod 3 are pulled out, the entire support plate 11 gradually closes toward the middle along the width direction and is then retracted into the first sleeve 2. During the entire process, the abutting part that constrains the support plate 11 to close toward the middle is the end of the first sleeve 2 rather than the patient's internal cervical os, and thus will not cause pain to the patient.

[0058] Preferably, there are multiple first elastic plates 41 , and the first elastic plates 41 are evenly distributed along the circumference of the axis of the second sleeve 4 .

[0059] Therefore, when the front end of the push rod 3 is used to push the inner side of the first elastic plate 41, so that the free end of the claw 42 bulges outward, and then the free end of the claw 42 abuts against the inner wall of the drainage tube 12, a plurality of claws 42 evenly distributed around the circumference can abut against the inner wall of the drainage tube 12 evenly in the circumferential direction, so that in the process of pulling the drainage tube 12 outward, the drainage tube 12 is evenly forced to move along the axial direction of the second sleeve 4, and will not be offset due to unilateral force, and thus will not be disengaged from the abutment with the claw 42.

[0060] However, in the above-mentioned disassembly and assembly assembly, when the drainage tube 12 is pulled outward, the friction between the claws 42 and the inner wall of the drainage tube 12 is relied upon to force the drainage tube 12 to move out of the patient's body as the push rod 3 and the second sleeve 4 are pulled. During the pulling process, especially when the edge of the support plate 11 abuts against the end of the first sleeve 2 and is subjected to force so that the support plate 11 is retracted toward the middle, the claws 42 and the inner wall of the drainage tube 12 may slide relative to each other or even slip off, resulting in a removal failure. For this reason, preferably, in this embodiment, a plurality of circumferential grooves 121 are provided on the inner wall of the drainage tube 12.

[0061] Therefore, when the front end of the push rod 3 is used to push the inner side of the first elastic plate 41, the free end of the claw 42 bulges outward, and then the free end of the claw 42 abuts against the inner wall of the drainage tube 12, if the free end of the claw 42 is directly stuck in the annular groove 121, then in the subsequent process of pulling the drainage tube 12 outward, it can be ensured that the drainage tube 12 is not separated from the second sleeve 4, thereby ensuring the traction effect; if the free end of the claw 42 is located between the two annular grooves 121, then in the subsequent process of pulling the drainage tube 12 outward, if the free end of the claw 42 and the inner wall of the drainage tube 12 slide relative to each other, it will slide into the next groove 121, thereby still ensuring the subsequent traction effect.

[0062] More preferably, at least three second elastic plates 43 are further installed on the end of the second sleeve 4 where the first elastic plate 41 is installed, and the second elastic plates 43 are evenly distributed in an array along the circumference of the axis of the second sleeve 4;

[0063] One end of the second elastic plate 43 is fixedly connected to the end surface of the second sleeve 4, and the other end extends in a direction away from the second sleeve 4;

[0064] From the fixed end to the free end of the second elastic plate 43, the distance between the outer wall of the second elastic plate 43 and the axis of the second sleeve 4 gradually decreases; the radius of the inscribed circle of the contour of each second elastic plate 43 projected along the axial direction of the second sleeve 4 is greater than the outer diameter of the drainage tube 12;

[0065] The axial distance between the free end of the second elastic plate 43 and the second sleeve 4 is greater than the axial distance between the free end of the claw 42 and the second sleeve 4;

[0066] An annular ridge 21 is provided in the first sleeve 2 . The distance between the ridge 21 and the insertion end of the first sleeve 2 is equal to the length of the drainage tube 12 .

[0067] Accordingly, after the first cannula 2 is inserted into the patient's uterine cavity, during the process of inserting the second cannula 4, the outer peripheral wall of the second elastic plate 43 first abuts against the ridge 21, so that the free end of the second elastic plate 43 gradually retracts inward, and then before the claw 42 enters the interior of the drainage tube 12, the free end of the second elastic plate 43 abuts against the outer wall of the drainage tube 12 to align the drainage tube 12 with the second cannula 4 (as shown in FIG. Figures 3 to 5 As shown, with the insertion of the second sleeve 4, the drainage tube 12 is gradually aligned with the second sleeve 4), thereby ensuring that the claw 42 enters the interior of the drainage tube 12 instead of abutting the end surface of the drainage tube 12, thereby avoiding pushing the support body toward the patient's uterine cavity during the insertion of the second sleeve 4, that is, avoiding the pain caused to the patient by pushing the support body inward during the removal of the support body.

[0068] It should be understood that when the insertion end of the first sleeve 2 is sleeved on the outside of the drainage tube 12,

[0069] Preferably, the number of the second elastic plates 43 is odd.

[0070] Therefore, when it is necessary to remove the support body in the patient's uterus, the first sleeve 2 is first inserted along the patient's cervix and the offset direction of the drainage tube 12 relative to the axis of the first sleeve 2 is determined in the process, and then in the process of inserting the second sleeve 4 into the first sleeve 2, any second elastic plate 43 is moved in the opposite direction of the offset of the drainage tube 12, thereby ensuring that the free end of the second elastic plate 43 will not abut the end face of the drainage tube 12 during the process of inserting the second sleeve 4 into the first sleeve 2.

[0071] Example 3:

[0072] This embodiment provides a method for using a support device for intrauterine drainage, based on the aforementioned support device for intrauterine drainage. Specifically, when inserting the support body into the uterus of a predetermined subject, the method includes:

[0073] S11, winding the support plate 11 in the width direction, and inserting the support body with the support plate 11 wound thereon into the first sleeve 2, so that the end of the support plate 11 away from the drainage tube 12 is flush with the insertion end; inserting the push rod 3 into the first sleeve 2 from the side away from the support body until the push rod 3 abuts against the drainage tube 12 of the support body;

[0074] S12, dilating the vagina of the preset subject using a vaginal dilation device until the external cervical os of the preset subject is exposed to the operator's field of vision;

[0075] S13, inserting the insertion end of the first cannula 2 equipped with the support body and the push rod 3 from the external cervical os into the uterine cavity of the preset subject until the wound support plate 11 is located in the uterine cavity of the preset subject;

[0076] S14, maintaining the position of the push rod 3 and pulling the first sleeve 2 out of the body of the preset subject until the first sleeve 2 is separated from the support body;

[0077] S15, the push rod 3 and the first sleeve 2 separated from the support body are pulled out from the body of the preset subject, the expansion of the vagina is canceled, and the operation of inserting the support body into the uterine cavity of the preset subject is completed.

[0078] More specifically, the step before S13 further includes:

[0079] Pre-measuring the cervical length and uterine cavity length of the preset subject;

[0080] The insertion depth of the insertion end of the first sleeve 2 equipped with the support body and the push rod 3 from the external cervical os into the uterine cavity of the preset object is the sum of the length of the cervix and the length of the uterine cavity.

[0081] It should be understood that when measuring the cervical length and uterine cavity length of the preset object, the uterine cavity width of the preset object is also measured, and then the appropriate support body model (model of the support plate 11) can be selected according to the uterine cavity size of the preset object; the cervical length measurement, uterine cavity depth and width measurement involved are all existing technologies and will not be repeated here.

[0082] By using the support device for uterine drainage provided in this embodiment, the support body is placed into the uterus of the preset subject, and the process of placing the support plate 11 into the uterine cavity can be achieved without dilating the cervix. By inserting the insertion end of the first cannula 2 equipped with the support body and the push rod 3 from the external cervical os to a certain depth (i.e., the sum of the cervical length and the uterine cavity length) in the uterine cavity of the preset subject, the support body can be located at an appropriate depth in the uterine cavity, thereby ensuring that after the first cannula 2 is subsequently pulled out to separate the first cannula 2 and the support plate 11, the support plate 11 is deployed in an appropriate position to support the uterine cavity of the preset subject. By dilating the vagina of the preset subject by the vaginal dilation device, the position of the external cervical os can be fully exposed when the vagina is only dilated to about 4 cm, thereby facilitating the insertion of the first cannula 2, and significantly reducing the degree of pain compared to dilating the cervix to 3-4 cm. By pulling out the first sleeve 2 until it is separated from the support body and then pulling out the first sleeve 2 together with the push rod 3, it is possible to prevent the pulling action of the first sleeve 2 from pulling the support body outward. On the one hand, it ensures the accurate position of the support plate 11. On the other hand, it also avoids the support plate 11 touching the internal cervical os due to pulling the support body, causing pain to the preset object or even damaging the mucosal tissue at the position of the internal cervical os.

[0083] Accordingly, this embodiment further provides a method for removing a support body inserted into the uterus of a predetermined subject. Specifically, when removing the support body inserted into the uterus of a predetermined subject, the method includes:

[0084] S21, dilating the vagina of the preset subject by using a vaginal dilation device until the external cervical os of the preset subject and the drainage tube 12 of the support body are exposed to the operator's field of vision;

[0085] S22, sleeve the insertion end of the first cannula 2 onto the outside of the drainage tube 12, and insert the first cannula 2 into the uterine cavity of the preset subject from the external cervical os;

[0086] S23, maintaining the position of the first sleeve 2, inserting the end of the second sleeve 4 mounted with the first elastic plate 41 into the first sleeve 2 until the claw 42 is located inside the drainage tube 12;

[0087] S24, maintaining the positions of the first sleeve 2 and the second sleeve 4, insert the push rod 3 into the second sleeve 4 from the side away from the support body, so that the head of the push rod 3 abuts against the inner wall of the first elastic plate 41 and pushes the first elastic plate 41 to expand outward until the free end of the claw 42 abuts against the inner wall of the drainage tube 12;

[0088] S25, maintaining the position of the first sleeve 2, and withdrawing the second sleeve 4 and the push rod 3 together toward the body of the preset subject until the support body enters the first sleeve 2;

[0089] S26, pulling out the first sleeve 2, the second sleeve 4 and the push rod 3 from the body of the preset subject, canceling the expansion of the vagina, and completing the operation of removing the support body inserted into the uterine cavity of the preset subject.

[0090] More specifically, in S22, the first cannula 2 is inserted from the external cervical os into the uterine cavity of the preset subject to a depth equal to the preset cervical length of the subject;

[0091] In S25 , the distance by which the second sleeve 4 and the push rod 3 are pulled out of the body of the preset object is greater than the length of the support plate 11 of the support body.

[0092] The method for using the support device for uterine drainage provided in this embodiment can remove the support body placed in the uterus of the preset subject, and can achieve the removal of the support body without dilating the cervix or damaging the cervix. The vagina of the preset subject is expanded by the vaginal dilation device until the external cervical os of the preset subject and the drainage tube 12 of the support body are exposed to the operator's field of vision, which can facilitate the insertion end of the first sleeve 2 to be sleeved on the outside of the drainage tube 12, thereby avoiding contact with the drainage tube 12 during the insertion of the first sleeve 2, and avoiding pushing the support body into the uterine cavity due to the insertion of the first sleeve 2; by pulling the support plate 11 into the first sleeve 2 and then removing the support body, it can be avoided that the cervix is ​​expanded and the support plate 11 rubs the cervix during the process of pulling out the support body.

[0093] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A support device for uterine drainage, characterized in that: include: A support body, the support body comprising a support plate (11) and a drainage tube (12); The support plate (11) is configured to fit the shape of the inner wall of the uterine cavity, and one end of the drainage tube (12) is fixedly connected to the support plate (11). When the support plate (11) is placed in the uterine cavity, the drainage tube (12) is located inside the cervix, and one end of the drainage tube (12) away from the support plate (11) is located outside the cervix, and the inner cavity of the drainage tube (12) is connected to the uterine cavity; A disassembly assembly, the disassembly assembly comprising a first sleeve (2) and a push rod (3), the outer diameter of the push rod (3) being larger than the inner diameter of the drainage tube (12) and smaller than the inner diameter of the first sleeve (2); when the support plate (11) is wound along the width direction, the support body can be inserted into the interior of the first sleeve (2) along the axial direction of the first sleeve (2); When the support body wound around the support plate (11) is located inside the first sleeve (2), the push rod (3) inserted into the first sleeve (2) can abut against the end of the drainage tube (12) away from the support body and push the support body out of the first sleeve (2); The disassembly assembly further comprises a second sleeve (4), the outer diameter of the second sleeve (4) being equal to the inner diameter of the first sleeve (2), and the inner diameter of the second sleeve (4) being equal to the outer diameter of the push rod (3); A first elastic plate (41) is mounted on the second sleeve (4), one end of the first elastic plate (41) is fixedly connected to the inner wall of the second sleeve (4), and the other end is located outside the second sleeve (4); from the fixed end to the free end of the first elastic plate (41), the distance between the first elastic plate (41) and the axis of the second sleeve (4) gradually decreases; A claw (42) is fixedly connected to the free end of the first elastic plate (41); the distance between the claw (42) and the axis of the second sleeve (4) gradually increases from the fixed end to the free end of the claw (42); The radius of the circumscribed circle of the outline of the claw (42) projected along the axial direction of the second sleeve (4) is smaller than the inner diameter of the drainage tube (12); At least three second elastic plates (43) are also installed at one end of the second sleeve (4) where the first elastic plate (41) is installed, and the second elastic plates (43) are evenly distributed in a circular array along the axis of the second sleeve (4); One end of the second elastic plate (43) is fixedly connected to the end surface of the second sleeve (4), and the other end extends in a direction away from the second sleeve (4); From the fixed end to the free end of the second elastic plate (43), the distance between the outer wall of the second elastic plate (43) and the axis of the second sleeve (4) gradually decreases; the radius of the inscribed circle of the contour of each second elastic plate (43) projected along the axial direction of the second sleeve (4) is greater than the outer diameter of the drainage tube (12).

2. The support device for uterine drainage according to claim 1, characterized in that: A plurality of protrusions (111) are provided on both side surfaces of the support plate (11).

3. The support device for uterine drainage according to claim 1, characterized in that: The edge thickness of the support plate (11) is greater than the inner thickness, and the edge of the support plate (11) is made of elastic material.

4. The support device for uterine drainage according to claim 1, characterized in that: A plurality of circumferential grooves (121) are provided on the inner wall of the drainage tube (12).

5. The support device for uterine drainage according to claim 1, characterized in that: The axial distance between the free end of the second elastic plate (43) and the second sleeve (4) is greater than the axial distance between the free end of the claw (42) and the second sleeve (4); An annular ridge (21) is provided in the first sleeve (2), and the distance between the ridge (21) and the insertion end of the first sleeve (2) is equal to the length of the drainage tube (12).

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