Supporting device for uterine cavity drainage and using method thereof

Abstract

The invention relates to the field of uterine cavity medical equipment, in particular to a supporting device for uterine cavity drainage and a using method of the supporting device. The supporting device for the uterine cavity drainage comprises a supporting body, wherein the supporting body comprises a supporting plate and a drainage tube; the supporting plate is configured to be in a shape fitting the inner wall of the uterine cavity, one end of the drainage tube is fixedly connected to the supporting plate, and the drainage tube is located in the cervix when the supporting plate is placed into the uterine cavity; the dismounting assembly comprises a first sleeve and a push rod, and 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; under the condition that the supporting plate is wound in the width direction, the supporting body can be inserted into the first sleeve in the axial direction of the first sleeve; the push rod inserted into the first sleeve can push the supporting body located in the first sleeve out of the first sleeve. The support body can be placed under the condition that the cervical part of a patient is not expanded through an expander, and the pain degree of the patient in the support body placing process is reduced.

Description

Technical Field

[0001] The present invention relates to the field of intrauterine medical devices, and particularly to a support device for intrauterine drainage and its using method. Background Art

[0002] Intrauterine adhesion is a pathological phenomenon in which part or all of the uterine cavity is adhesed due to damaged endometrium (such as induced abortion, uterine curettage, myomectomy, submucous myoma resection, hysteroscopic endometrial resection, mid-trimester induction of labor or uterine curettage after full-term delivery, etc.). It usually causes symptoms such as amenorrhea, oligomenorrhea, dysmenorrhea, recurrent miscarriage and infertility in patients.

[0003] Clinical treatment usually separates the adhesed and blocked uterine cavity through surgery. After separation, a support body is usually placed to prevent the endometrial wound surface at the adhesed part of the uterine cavity separated by the surgery from adhesing again during healing, thereby improving the recovery quality of the uterine cavity after surgery.

[0004] However, during the process of inserting the existing support body into the uterine cavity of a patient, the cervical part of the patient usually needs to be dilated by a dilator (usually dilated to 3 - 4 cm) to reach the required size for inserting the support body, and this process will increase the pain level of the patient. Summary of the Invention

[0005] The purpose of the present invention is to provide a support device for intrauterine drainage and its using method, which can at least partially overcome the above technical problems, and thus realize the insertion of the support body without dilating the cervical part of the patient by a dilator, thereby reducing the pain level of the patient during the insertion of the support body.

[0006] The first aspect of the present invention provides a support device for intrauterine drainage, including: a support body, the support body includes a support plate and a drainage tube; the support plate is configured to conform to the shape of the inner wall of the uterine cavity, one end of the drainage tube is fixedly connected to the support plate, when the support plate is inserted into the uterine cavity, the drainage tube is located in the cervix, the end of the drainage tube far from the support plate is located outside the cervix, and the inner cavity of the drainage tube is communicated with the uterine cavity; a disassembly and assembly component, the disassembly and assembly component includes 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 body is wound along the width direction, the support body can be inserted axially into the first sleeve; when the support body wound with 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 far from the support body and push the support body out of the first sleeve.

[0007] Further, a plurality of protrusion parts are arranged on both side surfaces of the support plate.

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

[0009] Furthermore, the disassembly and assembly component further 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 projection of the claw 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 further installed at one end of the second sleeve where the first elastic plate is installed. The second elastic plates are evenly arranged in a circumferential 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 the projection of each second elastic plate 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. A circumferential convex rib is provided in the first sleeve, and the distance between the convex rib and the insertion end of the first sleeve is equal to the length of the drainage tube.

[0012] On the other hand, 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 inserting the support body into the uterus of a preset object, it includes: S11, winding the support plate in the width direction, and inserting the support body after winding the support plate 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 through a vaginal dilator until the external os of the cervix of the preset object is exposed to the operator's field of vision; S13, inserting the insertion end of the first sleeve carrying the support body and the push rod into the uterine cavity of the preset object from the external os of the cervix until the wound support plate is located in the uterine cavity of the preset object; S14, keeping the position of the push rod and pulling out the first sleeve towards the outside of the preset object until the first sleeve is separated from the support body; S15, pulling out the push rod and the first sleeve separated from the support body from the body of the preset object together, canceling the dilation of the vagina, and completing the operation of inserting the support body into the uterine cavity of the preset object.

[0013] Further, before S13, it further includes: pre-measuring the cervical length and uterine cavity length of the preset object; the insertion depth of inserting the insertion end of the first sleeve carrying the support body and the push rod into the uterine cavity of the preset object from the external os of the cervix is the sum of the cervical length and the uterine cavity length.

[0014] Further, when removing the support body inserted into the uterus of the preset object, it includes: 21, expanding the vagina of the preset object through a vaginal dilator until the external os of the cervix of the preset object and the drainage tube of the support body are exposed to the operator's field of vision; S22, sleeving the insertion end of the first sleeve outside the drainage tube, and inserting the first sleeve into the uterine cavity of the preset object from the external os of the cervix; S23, keeping the position of the first sleeve, inserting one end of the second sleeve where the first elastic plate is installed into the first sleeve until the claw is located inside the drainage tube; S24, keeping the positions of the first sleeve and the second sleeve, inserting 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 outwards until the free end of the claw abuts against the inner wall of the drainage tube; S25, keeping the position of the first sleeve, pulling out the second sleeve and the push rod together towards the outside of the preset object until the support body enters the first sleeve; S26, pulling out the first sleeve, the second sleeve and the push rod from the body of the preset object together, canceling the dilation of the vagina, and completing the operation of removing the support body inserted into the uterine cavity of the preset object.

[0015] Further, in S22, the insertion depth of the first sleeve 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 sleeve and the push rod together toward 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: 1. A support device for uterine drainage and a method of using the same provided in the embodiments of the present disclosure can achieve insertion and removal of the support body without dilating the patient's cervix by a dilator, thereby reducing the pain of the patient during insertion and removal of the support body; 2. The embodiment of the present disclosure provides a support device for intrauterine drainage and a method of using the same. By providing a second elastic plate, the drainage tube and the second sleeve can be aligned in advance during the process of removing the support body, thereby avoiding accidentally pushing the support body toward the inside of the uterine cavity during the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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: Figure 1 A schematic diagram of a three-dimensional structure of a support body drawn according to an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a second sleeve according to an embodiment of the present invention; Figure 3 A cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset object is taken out according to an embodiment of the present invention; Figure 4 Another cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset object is taken out according to an embodiment of the present invention; Figure 5 It is another cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset object is taken out according to an embodiment of the present invention; Figure 6 It is another cross-sectional view of the support device for uterine drainage when the support body inserted into the uterus of a preset object is taken out according to an embodiment of the present invention.

[0018] Marks and corresponding parts names in the attached drawings: 11 - Support plate; 111 - Protrusion; 12 - Drainage tube; 121 - Groove; 2 - First sleeve; 21 - Ridge; 3 - Push rod; 4 - Second sleeve; 41 - First elastic plate; 42 - Claw; 43 - Second elastic plate. Detailed implementation mode

[0019] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and drawings. The illustrative 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 has been in the actual research and development and use stage.

[0020] Intrauterine adhesion is a pathological phenomenon in which part or all of the uterine cavity is adhesed due to damaged endometrium (such as artificial abortion, uterine curettage, myomectomy, submucous myoma resection, hysteroscopic endometrial resection, mid-term induction of labor or uterine curettage after full-term delivery, etc.). It usually causes symptoms such as amenorrhea, oligomenorrhea, dysmenorrhea, recurrent miscarriage and infertility in patients.

[0021] Clinical treatment usually separates the adhesed and blocked uterine cavity through surgery. After separation, a support is usually placed to prevent the endometrial wound surface at the adhesed part of the uterine cavity separated by surgery from adhesing again during healing, thereby improving the recovery quality of the uterine cavity after surgery.

[0022] However, during the process of inserting the existing support into the patient's uterine cavity, the patient's cervical part usually needs to be dilated by a dilator (usually dilated to 3 - 4 cm) to achieve the required size for inserting the support (stent width + operating space), and this process will increase the pain level of the patient.

[0023] In response to this, the present invention provides a support device for intrauterine drainage and its use method, which can achieve the insertion of the support without dilating the patient's cervical part by a dilator, thereby reducing the pain level of the patient during the insertion of the support.

[0024] Embodiment 1: As Figure 1 shown, the support device for intrauterine drainage provided in this embodiment includes: A support body, the support body includes a support plate 11 and a drainage tube 12; The support plate 11 is configured to conform to 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 inserted into the uterine cavity, the drainage tube 12 is located in the cervix, 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; Disassembly and assembly component, the disassembly and assembly component includes a first sleeve 2 and a push rod 3, 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 first sleeve 2 along the axial direction of the first sleeve 2; When the support body of the wound support plate 11 is inside the first sleeve 2, the push rod 3 inserted into the first sleeve 2 can abut against one end of the drainage tube 12 away from the support body and push the support body out of the first sleeve 2.

[0025] It should be understood that "the support plate 11 is configured to fit the shape of the inner wall of the uterine cavity" specifically means that the whole plate surface of the support plate 11 is an isosceles triangle (fitted to the inverted triangle shape of the uterine cavity) and the angles of the isosceles triangle are rounded, the base of the isosceles triangle corresponds to the uterine fundus, and the apex angle corresponds to the internal orifice of the cervix (correspondingly, the size of the base is the width of the support plate 11, and the distance from the apex angle to the base is the length of the support plate 11). Correspondingly, one end of the drainage tube 12 is fixedly connected to the apex angle position of the isosceles triangle.

[0026] Obviously, the length of the drainage tube 12 is greater than the length of the cervix.

[0027] Thus, when the support plate 11 is placed in the uterine cavity of the patient, on the one hand, the drainage tube 12 can support the entire cervix of the patient, thereby avoiding adhesion in the cervical part. On the other hand, the drainage tube 12 can also be used to drain the effusion in the uterine cavity of the patient, and one end of the drainage tube 12 located outside the cervix can facilitate the subsequent removal of the support body.

[0028] 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 an 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.

[0029] Thus, when the wound support body of the support plate 11 is 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 will not slide by itself inside the first sleeve 2; in addition, after the wound support body of 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 the plate shape before winding; and when the support plate 11 is located in the uterine cavity of the patient, the relatively thick edge of the support plate 11 can enable the support plate 11 to maintain the initial plate structure and thus play a good supporting role for the uterine cavity. Obviously, the edge of the support plate 11 is smooth, thereby avoiding damage to the uterine cavity of the patient.

[0030] Accordingly, the support device for intrauterine drainage provided in this embodiment can wind the support plate 11 along the width direction, then insert the wound support body of the support plate 11 into the first sleeve 2, and then insert the first sleeve with the support body into the patient's uterine cavity; use the pushing action of the push rod 3 to pull out the first sleeve 2 and retain the support plate 11 in the patient's uterine cavity. The support plate 11 expands into a plate shape under the elastic action to support the uterine cavity. Thus, the placement of the support body is completed without dilating the patient's cervical part through a dilator, greatly reducing the pain caused to the patient during the placement of the support body.

[0031] Preferably, the support plate 11 has various length and width specifications, so as to adapt to the uterine cavity depth and width of different patients. In a specific practice of this embodiment, the support plate 11 has various models as shown in the following table.

[0032] Table 1: Support body model table Preferably, a plurality of convex portions 111 are provided on both side surfaces of the support plate 11. Obviously, the convex portions 111 are smooth convex portions 111.

[0033] Thus, after the support plate 11 is placed into 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 convex portions 111 can form a plurality of dot-shaped supports during the period when the support plate 11 remains in the patient's uterine cavity, thus preventing the uterine cavity wall from adhering to the support plate 11 during the period when the support plate 11 remains, and further preventing the difficult removal or even re-injury of the patient's endometrium due to the adhesion of the uterine cavity wall to the support plate 11 when the support body needs to be removed.

[0034] Embodiment 2: As Figure 2 shown, this embodiment is based on Embodiment 1, and the difference is that in this embodiment: The disassembly and assembly component 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; A first elastic plate 41 is installed 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; from the fixed end to the free end of the claw 42, the distance between the claw 42 and the axis of the second sleeve 4 gradually increases; The circumradius of the circumcircle of the contour of the jaw 42 projected axially along the second sleeve 4 is smaller than the inner diameter of the drainage tube 12.

[0035] Accordingly, when it is necessary to remove the support body from the patient's uterus, the first sleeve 2 can be first inserted along the patient's cervix (during this process, it should be ensured that the drainage tube 12 is located inside the first sleeve 2) into the uterine cavity; then the second sleeve 4 is inserted along the inside of the first sleeve 2 until the jaw 42 enters the inside of the drainage tube 12 (as Figure 5 shown); then the push rod 3 is inserted into the second sleeve 4, and the inner side of the first elastic plate 41 is pushed by the front end of the push rod 3, so that the free end of the jaw 42 bulges outwards, and then the free end of the jaw 42 abuts against the inner wall of the drainage tube 12 (as Figure 6 shown, during this process, the second sleeve 4 remains stationary); thereafter, the push rod 3 and the second sleeve 4 are pulled out together towards the outside of the patient's body, and the drainage tube 12 is pulled by the jaw 42, so that the support plate 11 enters the first sleeve 2; after the support plate 11 enters the drainage tube 12, the first sleeve 2, the second sleeve 4 and the push rod 3 are pulled out together to the outside of the patient's body, and the removal operation of the support body is completed. Thus, it is possible to avoid the operation of dilating the cervix during the process of removing the support body from the patient's uterine cavity and reduce the pain of the patient.

[0036] It should be noted that during the process of pulling out the push rod 3 and the second sleeve 4 together towards the outside of the patient's body, and pulling the drainage tube 12 by the jaw 42 so that the support plate 11 enters the first sleeve 2, since the end of the first sleeve 2 is located inside the uterine cavity, during the process of pulling out the support plate 11 outwards, the edge part 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 towards the middle in the width direction and is then received inside the first sleeve 2. The abutting part that restricts the support plate 11 to close towards the middle throughout the process is the end of the first sleeve 2 rather than the internal orifice of the patient's cervix, and thus it will not cause pain to the patient.

[0037] Preferably, the number of the first elastic plates 41 is multiple, and the first elastic plates 41 are circumferentially and evenly distributed along the axis of the second sleeve 4.

[0038] Thus, during the process of pushing the inner side of the first elastic plate 41 by the front end of the push rod 3, so that the free end of the jaw 42 bulges outwards, and then the free end of the jaw 42 abuts against the inner wall of the drainage tube 12, the multiple jaws 42 that are circumferentially and evenly distributed can abut against the inner wall of the drainage tube 12 evenly in the circumferential direction, so that during the process of pulling out the drainage tube 12 outwards, the drainage tube 12 moves axially along the second sleeve 4 with uniform force and will not shift due to unilateral force and then disengage from the abutment with the jaw 42.

[0039] However, in the above disassembly and assembly component, during the process of pulling out the drainage tube 12 outward, it relies on the frictional force between the clamping claws 42 and the inner wall of the drainage tube 12 to force the drainage tube 12 to move towards the outside of the patient along with the pulling out of the push rod 3 and the second sleeve 4. During the pulling process, especially when the edge part of the support plate 11 abuts against the end of the first sleeve 2 and is stressed, causing the support plate 11 to converge towards the middle, there may be a phenomenon of relative sliding or even slipping between the clamping claws 42 and the inner wall of the drainage tube 12, resulting in the failure of extraction. Therefore, preferably, in this embodiment, a plurality of circumferential grooves 121 are provided on the inner wall of the drainage tube 12.

[0040] Thus, when using the front end of the push rod 3 to push against the inner side of the first elastic plate 41, causing the free end of the clamping claw 42 to bulge outward, and then the free end of the clamping claw 42 abuts against the inner wall of the drainage tube 12, if the free end of the clamping claw 42 directly snaps into the circumferential groove 121, then during the subsequent process of pulling out the drainage tube 12 outward, it can ensure that the drainage tube 12 does not separate from the second sleeve 4, ensuring the traction effect; if the free end of the clamping claw 42 is located between two circumferential grooves 121, then during the subsequent process of pulling out the drainage tube 12 outward, if relative sliding occurs between the free end of the clamping claw 42 and the inner wall of the drainage tube 12, it will slide into the next groove 121, still ensuring the subsequent traction effect.

[0041] More preferably, at least three second elastic plates 43 are further 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 arranged in a circumferential array along the axis of the second sleeve 4; One end of the second elastic plate 43 is fixedly connected to the end face 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 the projection of each second elastic plate 43 along the axial direction of the second sleeve 4 is greater than the outer diameter of the drainage tube 12; 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 clamping claw 42 and the second sleeve 4; A circumferential convex rib 21 is provided in the first sleeve 2, and the distance between the convex rib 21 and the insertion end of the first sleeve 2 is equal to the length of the drainage tube 12.

[0042] Accordingly, after the first cannula 2 is inserted into the uterine cavity of the patient, during the process of inserting the second cannula 4, the outer peripheral wall of the second elastic plate 43 first abuts against the convex rib 21, so that the free end of the second elastic plate 43 gradually folds inward. Then, before the claw 42 enters the inside 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 and the second cannula 4 (as Figures 3 to 5 shown, as the second cannula 4 is inserted, the drainage tube 12 gradually aligns with the second cannula 4), thereby ensuring that the claw 42 enters the inside of the drainage tube 12 instead of abutting against the end face of the drainage tube 12, thus avoiding pushing the support body towards the inside of the uterine cavity of the patient during the insertion process of the second cannula 4, that is, avoiding the pain caused to the patient by pushing the support body inward during the process of removing the support body.

[0043] It should be understood that when the insertion end of the first cannula 2 is sleeved outside the drainage tube 12, it should Preferably, the number of the second elastic plates 43 is odd.

[0044] Thus, when it is necessary to remove the support body in the patient's uterus, first insert the first cannula 2 along the patient's cervix and determine the offset direction between the axis of the drainage tube 12 and the axis of the first cannula 2 during this process. Then, during the process of inserting the second cannula 4 into the first cannula 2, deflect any second elastic plate 43 in the direction opposite to the deflection towards the drainage tube 12, so as to ensure that the free end of the second elastic plate 43 does not abut against the end face of the drainage tube 12 during the process of inserting the second cannula 4 into the first cannula 2.

[0045] Embodiment 3: This embodiment provides a method for using a support device for uterine cavity drainage. Based on the foregoing support device for uterine cavity drainage, specifically, when the support body is placed into the uterus of a preset object, it includes: S11, wind the support plate 11 along the width direction, and insert the support body after winding the support plate 11 into the first cannula 2, so that the end of the support plate 11 away from the drainage tube 12 is flush with the insertion end; insert the push rod 3 into the first cannula 2 from the side away from the support body until the push rod 3 abuts against the drainage tube 12 of the support body; S12, expand the vagina of the preset object through a vaginal dilator until the external os of the cervix of the preset object is exposed to the operator's field of view; S13, insert the insertion end of the first cannula 2 carrying the support body and the push rod 3 into the uterine cavity of the preset object from the external os of the cervix until the wound support plate 11 is located in the uterine cavity of the preset object; S14. Keep the position of the push rod 3 and pull out the first sleeve 2 towards the outside of the preset object until the first sleeve 2 is separated from the support body; S15. Pull out the push rod 3 and the first sleeve 2 separated from the support body from the body of the preset object together, cancel the dilation of the vagina, and complete the operation of placing the support body into the uterine cavity of the preset object.

[0046] More specifically, before S13, it further includes: Pre-measure the cervical length and uterine cavity length of the preset object; The insertion depth of the insertion end of the first sleeve 2 carrying the support body and the push rod 3 into the uterine cavity of the preset object from the external os of the cervix is the sum of the cervical length and the uterine cavity length.

[0047] 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 an appropriate support body model (the model of the support plate 11) can be selected according to the uterine cavity size of the preset object; the measurement of the cervical length, the uterine cavity depth and width involved are all prior arts and will not be elaborated here.

[0048] By using the method of the support device for uterine cavity drainage provided in this embodiment to place the support body into the uterus of the preset object, the process of placing the support plate 11 into the uterine cavity can be realized without cervical dilation. By inserting the insertion end of the first sleeve 2 carrying the support body and the push rod 3 into the uterine cavity of the preset object from the external os of the cervix to a certain depth (that is, the sum of the cervical length and the uterine cavity length), the support body can be located at an appropriate depth position in the uterine cavity, and then it can be ensured that after the first sleeve 2 is pulled out subsequently and the first sleeve 2 and the support plate 11 are separated, the position of the support plate 11 is appropriate, realizing the support for the uterine cavity of the preset object. By using the vaginal dilator to dilate the vagina of the preset object, the position of the external os of the cervix can be fully exposed when the vagina is only dilated to about 4 cm, which is convenient for the insertion of the first sleeve 2. Compared with dilating the cervix to 3 - 4 cm, the degree of pain is greatly reduced. 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 can be avoided that the pulling out action of the first sleeve 2 pulls the support body outward. On the one hand, it ensures the accurate position of the support plate 11, and on the other hand, it also avoids causing pain to the preset object or damaging the mucosal tissue at the position of the internal os of the cervix due to pulling the support body.

[0049] Correspondingly, this embodiment also provides a method for removing the support body placed in the uterus of the preset object. Specifically, when removing the support body placed in the uterus of the preset object, it includes: 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; S22, sleeve the insertion end of the first sleeve 2 onto the outside of the drainage tube 12, and insert the first sleeve 2 from the external cervical os into the uterine cavity of the preset subject; S23, maintaining the position of the first sleeve 2, inserting one 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; S24, maintaining the positions of the first sleeve 2 and the second sleeve 4, inserting 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; S25, maintaining the position of the first sleeve 2, and pulling the second sleeve 4 and the push rod 3 out of the body of the preset object until the support body enters into the first sleeve 2; S26, pulling out the first sleeve 2, the second sleeve 4 and the push rod 3 from the body of the preset object, canceling the expansion of the vagina, and completing the operation of removing the support body inserted into the uterine cavity of the preset object.

[0050] More specifically, in S22, the insertion depth of the first cannula 2 from the external cervical os into the uterine cavity of the preset subject is equal to the cervical length of the preset subject; In S25, the distance of pulling the second sleeve 4 and the push rod 3 out of the body of the preset object is greater than the length of the support plate 11 of the support body.

[0051] The support body inserted into the uterus of the preset object can be taken out by using the method of using the support device for uterine drainage provided by this embodiment, and the support body can be taken out without dilating the cervix or damaging the cervix. The vagina of the preset object is expanded by the vaginal dilation device until the external cervical os of the preset object and the drainage tube 12 of the support body are exposed to the operator's field of vision, so that the insertion end of the first sleeve 2 can be easily 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 taking out the support body, the cervix can be expanded and the support plate 11 can be prevented from scratching the cervix during the process of pulling out the support body.

[0052] The specific embodiments described above further elaborate on the object, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A support device for intrauterine drainage, characterized in that, Comprising: A support body, the support body including a support plate (11) and a drainage tube (12); The support plate (11) is configured to conform to 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 into the uterine cavity, the drainage tube (12) is located within the cervix, 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) communicates with the uterine cavity; A disassembly and assembly component, the disassembly and assembly component including a first sleeve (2) and a push rod (3), the outer diameter of the push rod (3) is greater than the inner diameter of the drainage tube (12) and less than the inner diameter of the first sleeve (2); when the support plate (11) is wound in the width direction, the support body can be inserted axially into the first sleeve (2) along the axial direction of the first sleeve (2); When the support body with the support plate (11) wound 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).

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

3. The support device for uterine cavity 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 an elastic material.

4. The support device for uterine cavity drainage according to claim 1, characterized in that The disassembly and assembly component 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); A first elastic plate (41) is installed 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); from the fixed end to the free end of the claw (42), the distance between the claw (42) and the axis of the second sleeve (4) gradually increases; The radius of the circumscribed circle of the contour of the projection of the claw (42) along the axial direction of the second sleeve (4) is smaller than the inner diameter of the drainage tube (12).

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

6. The support device for uterine cavity drainage according to claim 4, characterized in that At one end of the second sleeve (4) where the first elastic plate (41) is installed, at least three second elastic plates (43) are further installed, and the second elastic plates (43) are evenly distributed in a circumferential array along the axis of the second sleeve (4); One end of the second elastic plate (43) is fixedly connected to the end face 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 the axial projection of each second elastic plate (43) along the second sleeve (4) is greater than the outer diameter of the drainage tube (12); 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); A circumferential rib (21) is provided in the first sleeve (2), and the distance between the rib (21) and the insertion end of the first sleeve (2) is equal to the length of the drainage tube (12).

7. A method for using a support device for intrauterine drainage, based on the support device for intrauterine drainage described in claim 6, characterized in that, When the support body is placed into the uterus of a preset object, it includes: S11, winding the support plate (11) in the width direction, and inserting the support body after winding the support plate (11) 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; S12, dilating the vagina of the preset object through a vaginal dilator until the external os of the cervix of the preset object is exposed to the operator's field of vision; S13, inserting the insertion end of the first sleeve (2) carrying the support body and the push rod (3) from the external os of the cervix into the uterine cavity of the preset object until the wound support plate (11) is located in the uterine cavity of the preset object; S14, keeping the position of the push rod (3) and pulling out the first sleeve (2) towards the outside of the preset object until the first sleeve (2) is separated from the support body; S15, pulling out the push rod (3) and the first sleeve (2) separated from the support body from the body of the preset object together, canceling the dilation of the vagina, and completing the operation of placing the support body into the uterine cavity of the preset object.

8. The usage method according to claim 7, wherein, Before S13, it further includes: Pre-measuring the cervical length and uterine cavity length of the preset object; The insertion depth of inserting the insertion end of the first sleeve (2) carrying the support body and the push rod (3) from the external os of the cervix into the uterine cavity of the preset object is the sum of the cervical length and the uterine cavity length.

9. The usage method according to claim 7, characterized in that, When removing the support body placed in the uterus of a preset object, it includes: S21, dilating the vagina of the preset object through a vaginal dilator until the external os of the cervix of the preset object and the drainage tube (12) of the support body are exposed to the operator's field of vision; S22. Sheath the insertion end of the first cannula (2) outside the drainage tube (12), and insert the first cannula (2) into the uterine cavity of the preset subject through the external os of the cervix. S23. While maintaining the position of the first cannula (2), insert one end of the second cannula (4) equipped with the first elastic plate (41) into the first cannula (2) until the claw (42) is located inside the drainage tube (12). S24. While maintaining the positions of the first cannula (2) and the second cannula (4), insert the push rod (3) into the second cannula (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). S25. While maintaining the position of the first cannula (2), withdraw the second cannula (4) and the push rod (3) together out of the preset subject's body until the support body enters the first cannula (2). S26. Pull out the first cannula (2), the second cannula (4) and the push rod (3) together from the body of the preset subject, cancel the dilation of the vagina, and complete the operation of removing the support body placed in the uterine cavity of the preset subject.

10. The method of use according to claim 9, wherein in S22, the insertion depth of inserting the first cannula (2) from the external os of the cervix into the uterine cavity of the preset subject is equal to the cervical length of the preset subject; in S25, the withdrawal distance of withdrawing the second cannula (4) and the push rod (3) together out of the preset subject's body is greater than the length of the support plate (11) of the support body.

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