A new uterine manipulator
By creating an adjustable umbrella surface by connecting the umbrella ribs and shaft in the uterine manipulator, the problem of uterine tissue falling into the gap is solved, resulting in a clearer field of vision and more precise surgical operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-05
AI Technical Summary
In existing techniques, uterine tissues are prone to getting stuck in the gap between two adjacent uterine sac bones, affecting the clarity of the surgical field and the precision of the operation.
A novel uterine lifter is designed with an adjustable angle between the umbrella ribs and the umbrella shaft. The umbrella surface forms a plane to increase the contact area with the uterus. The opening and closing of the umbrella ribs are controlled by the umbrella rib angle adjustment component and the traction line to prevent tissue from getting stuck in the gap.
Improve the clarity of the surgical field, reduce the risk of uterine perforation, and ensure the precision of the surgical procedure and a smooth exit.
Smart Images
Figure CN224320742U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, and in particular to a novel uterine lifting device. Background Technology
[0002] A uterine manipulator is a medical device used in gynecological laparoscopic surgery to assist in manipulating the uterus. It is mainly used in total hysterectomy, subtotal hysterectomy and related laparoscopic surgeries to help doctors better expose the surgical field and manipulate the uterus.
[0003] Invention application with publication number "CN110251214A" discloses a uterine lifter. This application includes a uterine lifter umbrella at the tip of a guide rod and a control mechanism for opening and closing the umbrella. During surgery, the umbrella is first closed, and then inserted vaginally through routine cervical dilation. Once the umbrella reaches the bottom of the uterus, it is opened by the control mechanism. The long bone of the umbrella rests against the uterine wall, increasing the contact area with the uterus and preventing excessive pressure on the contact surface between the guide rod and the bottom of the uterus, which could lead to uterine perforation, thus improving surgical safety.
[0004] However, given that the internal tissues of the uterus are soft and elastic, during the surgical procedure, because the application uses multiple cymbidium long bones for fixation, the internal tissues of the uterus are very likely to get stuck in the gap between two adjacent cymbidium long bones. This may not only affect the clarity of the surgical field, but also interfere with the precision of the surgical operation. Utility Model Content
[0005] In view of the deficiencies in the existing technology, this utility model provides a novel uterine lifter to solve the problem that the internal tissues of the uterus are easily trapped in the gap between two adjacent uterine lifter bones, which may not only affect the clarity of the surgical field, but also interfere with the precision of the surgical operation.
[0006] To achieve the above objectives, this utility model provides a novel uterine lifting device, comprising: a uterine lifting device body, a uterine lifting umbrella assembly, and a storage component, wherein the storage component is installed on the uterine lifting device body;
[0007] The uterine-lifting umbrella assembly includes a hollow umbrella pole, an umbrella canopy, and multiple umbrella ribs. One end of the umbrella pole is movably disposed within the storage component, which is used to store the uterine-lifting umbrella assembly. One end of each umbrella rib is rotatably mounted on the other end of the umbrella pole, and the umbrella canopy covers the umbrella rib. Each umbrella rib is provided with an umbrella rib angle adjustment component between it and the umbrella pole, and the rotation angle between the umbrella rib and the umbrella pole is set to 0° to 90°.
[0008] This design, by arranging the umbrella surface on the umbrella ribs and ensuring that the ribs are perpendicular to the umbrella shaft under the control of the umbrella rib angle adjustment device, makes the umbrella surface form a plane, thereby increasing the contact area with the uterus and reducing the risk of uterine perforation. At the same time, the umbrella surface can effectively prevent internal uterine components from getting stuck between two adjacent umbrella ribs, thereby ensuring the clarity of the surgical field and improving the accuracy of the surgical operation.
[0009] Furthermore, the umbrella rib angle adjustment component includes a torsion spring, a traction line, and a fixing shaft;
[0010] One end of the umbrella pole is provided with a rotating groove, and the fixed shaft is fixedly installed in the rotating groove;
[0011] The torsion spring is movably sleeved on the fixed shaft, one end of the torsion spring is fixedly connected to the umbrella rod, and the other end of the torsion spring is fixedly connected to the umbrella rib.
[0012] The umbrella pole has a through hole penetrating the inner and outer walls of the umbrella pole. One end of the traction line is fixedly connected to the umbrella rib, and the other end of the traction line passes through the through hole and extends into the umbrella pole. The axial length between the through hole and the end of the umbrella pole away from the body of the uterine lifter is greater than the axial length between the intersection of the traction line and the umbrella rib and the end of the umbrella pole away from the body of the uterine lifter. The traction line, the umbrella rib, and the umbrella pole form a triangle when the umbrella rib is opened.
[0013] Furthermore, when the angle between the umbrella rib and the umbrella pole is 90°, the height distance between the center point of the fixed shaft and the top surface of the umbrella rib is equal to the height distance between the center point of the fixed shaft and the top surface of the umbrella pole.
[0014] Furthermore, a sliding ring is slidably installed inside the umbrella pole, and one end of the traction line passing through the through hole is fixedly connected to the sliding ring; a control rod is fixedly connected to the sliding ring, and the control rod passes through the end of the umbrella pole.
[0015] Furthermore, a limiting ring is fixedly installed inside the umbrella pole. When the top of the sliding ring abuts against the bottom of the limiting ring, the angle between the umbrella rib and the umbrella pole is 90°.
[0016] Furthermore, the storage component is configured as a hollow sleeve, one end of which is detachably mounted on the body of the uterine lifter; one end of the umbrella rod is movably mounted inside the sleeve, the inner diameter of the sleeve is set to A, the outer diameter of the umbrella rod is set to B, and the thickness of the umbrella rib is set to C, where A>B+2C.
[0017] Furthermore, a rotating sleeve for moving the umbrella pole is fixedly sleeved on the umbrella pole, and the rotating sleeve is threadedly connected to the sleeve; the end of the umbrella pole extends from one end of the uterine lifter body to the other end, and the axial length between the rotating sleeve and the end of the umbrella pole away from the uterine lifter body is greater than the axial length of the umbrella rib.
[0018] Furthermore, a chamfer is provided on the inner side of the sleeve near the umbrella rib, and the chamfer is used to guide the folding of the umbrella rib.
[0019] Furthermore, the through hole is inclined, with the outward-facing end of the through hole higher than the inward-facing end.
[0020] Furthermore, the sleeve is threadedly connected to the body of the uterine lifting device.
[0021] The beneficial effects of this embodiment are as follows:
[0022] 1. By arranging the umbrella surface on the umbrella ribs, and ensuring that the umbrella ribs are perpendicular to the umbrella pole under the control of the umbrella rib angle adjustment device, the umbrella surface forms a plane, thereby increasing the contact area with the uterus and reducing the risk of uterine perforation; at the same time, the umbrella surface can effectively prevent the internal components of the uterus from getting stuck between two adjacent umbrella ribs, thereby ensuring the clarity of the surgical field and improving the accuracy of the surgical operation.
[0023] 2. The umbrella ribs are rotated and mounted on the umbrella pole by a fixed shaft and a torsion spring, and the opening and closing of the umbrella ribs are controlled by a traction line, so that the umbrella ribs can be perpendicular to the umbrella pole and the umbrella surface can be opened into a plane, thereby increasing the contact area with the uterus and reducing the risk of uterine perforation.
[0024] 3. By connecting the rotating sleeve threaded into the sleeve, the umbrella rod can be securely installed, and the positional relationship between the umbrella rod and the sleeve can be adjusted so that the umbrella ribs and umbrella surface can be retracted into the sleeve. This effectively avoids unnecessary contact or friction between the ends of the umbrella ribs and umbrella surface and the uterine tissue during the withdrawal process, ensuring that the entire device can be withdrawn smoothly. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of the novel uterine lifting device according to an embodiment of the present utility model;
[0026] Figure 2 This is a cross-sectional structural diagram of the novel uterine lifting device according to an embodiment of the present utility model;
[0027] Figure 3 In the novel uterine lifting device of this utility model embodiment Figure 2 Enlarged structural diagram of point A in the middle section;
[0028] Figure 4In the novel uterine lifting device of this utility model embodiment Figure 2 Enlarged schematic diagram of the structure at point B in the middle section;
[0029] Figure 5 In the novel uterine lifting device of this utility model embodiment Figure 2 A magnified schematic diagram of the structure at point C in the middle section.
[0030] Among them, the main body of the uterus-lifting device is 1;
[0031] 2. Umbrella pole; 21. Umbrella canopy; 22. Umbrella ribs;
[0032] Sleeve 3, Rotating sleeve 31;
[0033] Control lever 4, traction line 41, sliding ring 42, limit ring 43, through hole 44;
[0034] Fixed shaft 5, rotating groove 51, torsion spring 52. Detailed Implementation
[0035] The specific embodiments of this utility model will be described in detail below. It should be noted that the embodiments described herein are for illustrative purposes only and are not intended to limit the utility model. In the following description, numerous specific details are set forth in order to provide a thorough understanding of this utility model. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement this utility model. In other instances, well-known circuits, software, or methods have not been specifically described in order to avoid obscuring the utility model.
[0036] Throughout this specification, references to "an embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "in an embodiment," "in an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale.
[0037] Please see Figure 1-2This utility model provides an embodiment of a novel uterine lifting device, comprising: a uterine lifting device body 1, a uterine lifting umbrella assembly, and a storage component, wherein the storage component is installed on the uterine lifting device body 1; the uterine lifting umbrella assembly includes a hollow umbrella pole 2, an umbrella surface 21, and multiple umbrella ribs 22, one end of the umbrella pole 2 is movably disposed within the storage component, which is used to store the uterine lifting umbrella assembly; one end of each umbrella rib 22 is rotatably mounted on the other end of the umbrella pole 2, and the umbrella surface 21 covers the umbrella rib 22; an umbrella rib angle adjustment component is provided between each umbrella rib 22 and the umbrella pole 2, the umbrella rib angle adjustment component controls the opening and closing of the umbrella rib 22, and the rotation angle between the umbrella rib 22 and the umbrella pole 2 is set to 0°~90°. In use, the uterine lifting umbrella component is stored in the storage unit and then inserted into the patient's uterus using the standard installation method. The umbrella component is then slowly slid out of the storage unit. Finally, the umbrella ribs 22 are opened using the umbrella rib angle adjustment device, so that the umbrella surface 21 forms a flat surface, closely adhering to the internal uterine tissue, increasing the contact area with the uterus, thereby reducing the risk of uterine perforation. Simultaneously, the umbrella surface 21 effectively prevents the internal components from getting stuck between adjacent umbrella ribs 22, ensuring a clear surgical field and improving the precision of the surgical procedure. When the entire device needs to be withdrawn from the patient's uterus, the umbrella ribs 22 are closed using the umbrella rib angle adjustment device. After all umbrella ribs 22 are closed, the uterine lifting umbrella component is slid back into the storage unit, effectively preventing unnecessary contact or friction between the ends of the umbrella ribs 22 and the ends of the umbrella surface 21 and the uterine tissue during withdrawal, ensuring smooth withdrawal of the entire device.
[0038] Please see Figure 2-3 In this embodiment, the umbrella rib angle adjustment component includes a torsion spring 52, a traction line 41, and a fixed shaft 5. One end of the umbrella rod 2 has a rotating groove 51, and the fixed shaft 5 is fixedly installed in the rotating groove 51. The torsion spring 52 is movably sleeved on the fixed shaft 5. One end of the torsion spring 52 is fixedly connected to the umbrella rod 2, and the other end of the torsion spring 52 is fixedly connected to the umbrella rib 22. The umbrella rod 2 has a through hole 44 that penetrates the inner and outer walls of the umbrella rod 2. One end of the traction line 41 is fixedly connected to the umbrella rib 22, and the other end of the traction line 41 passes through the through hole 44 and extends into the umbrella rod 2. The axial length between the through hole 44 and the end of the umbrella rod 2 away from the uterine lifter body 1 is greater than the axial length between the intersection of the traction line 41 and the umbrella rib 22 and the end of the umbrella rod 2 away from the uterine lifter body 1. The traction line 41, the umbrella rib 22, and the umbrella rod 2 form a triangle when the umbrella rib 22 is opened. The intersection of the traction line 41 and the umbrella rib 22 is set as the first intersection point, the intersection of the umbrella rib 22 and the umbrella pole 2 is set as the second intersection point, and the through hole 44 located on the outer wall of the umbrella pole 2 is set as the third intersection point. The first intersection point, the second intersection point and the third intersection point form a triangle, so that the traction line 41 can smoothly pull the umbrella rib 22 to open and close.
[0039] In use, the opening and closing degree of the umbrella ribs 22 can be controlled by adjusting the length of the traction line 41, thus precisely controlling the opening angle of the umbrella ribs 22 to adapt to different uterine cavity sizes. Simultaneously, the length of the traction line 41 limits the maximum opening angle of the umbrella ribs 22 to 90°, preventing excessive opening and damage to the uterine wall. Furthermore, when the torsion spring 52 is in its initial state, the angle between the umbrella ribs 22 and the umbrella rod 2 is 90°. The torsion spring 52 provides the umbrella ribs 22 with an outward-opening force and initial pre-tension, ensuring that after the traction line 41 is released, the umbrella ribs 22 can open outward under the action of the torsion spring 52. The initial pre-tension ensures that the umbrella surface 21 maintains tension after naturally unfolding within the uterus, preventing collapse due to uterine wall pressure. The torsion spring 52 also further limits the maximum opening angle of the umbrella ribs 22. In actual use, the traction line 41 can be fixedly connected to the end of the umbrella ribs 22, allowing the entire umbrella rib 22 to fit more tightly with the umbrella rod 2 during storage, thus making storage smoother.
[0040] Please see Figure 2-3 When the angle between the umbrella rib 22 and the umbrella pole 2 is 90°, the height distance between the center point of the fixed shaft 5 and the top surface of the umbrella rib 22 is equal to the height distance between the center point of the fixed shaft 5 and the top surface of the umbrella pole 2. This ensures that the top surface of the umbrella rib 22 and the top surface of the umbrella pole 2 are on the same horizontal plane, thus making the umbrella surface 21 flat.
[0041] Please see Figure 4 In this embodiment, the through hole 44 is inclined, with the outward end of the through hole 44 being higher than the inward end. When the traction line 41 is used, it is easier to rotate the umbrella rib 22, improving the smoothness of the umbrella opening and closing and reducing jamming.
[0042] Please see Figure 2 and Figure 4 In this embodiment, a sliding ring 42 is slidably installed inside the umbrella pole 2, and one end of the traction line 41 passing through the through hole 44 is fixedly connected to the sliding ring 42; a control rod 4 is fixedly connected to the sliding ring 42, and the control rod 4 passes through the end of the umbrella pole 2. This prevents the traction line 41 from becoming too numerous due to too many umbrella ribs 22, thus avoiding tangling inside the umbrella pole 2. The sliding ring 42 is used to organize and manage the traction line 41, preventing it from affecting its normal use. The control rod 4 is used to control the up and down movement of the sliding ring 42, thereby controlling the traction effect of the traction line 41 on the umbrella ribs 22.
[0043] Please see Figure 4 In this embodiment, a limiting ring 43 is fixedly installed inside the umbrella rod 2. When the top of the sliding ring 42 abuts against the bottom of the limiting ring 43, the angle between the umbrella rib 22 and the umbrella rod 2 is 90°. The limiting ring 43 can restrict the stroke of the sliding ring 42, preventing the umbrella rib 22 from rotating excessively under the elastic deformation of the torsion spring 52, which could cause damage to the internal tissues of the uterus.
[0044] Please see Figure 2 In this embodiment, the storage component is a hollow sleeve 3, one end of which is detachably mounted on the uterine lifter body 1; one end of the umbrella rod 2 is movably mounted inside the sleeve 3. The inner diameter of the sleeve 3 is set to A, the outer diameter of the umbrella rod 2 is set to B, and the thickness of the umbrella rib 22 is set to C, where A>B+2C. In use, the sleeve 3 is simply fixedly mounted on the uterine lifter body 1, and then the sleeve 3 is used to store the uterine lifter umbrella assembly, facilitating its smooth withdrawal from the uterus. In this embodiment, the sleeve 3 is threadedly connected to the uterine lifter body 1, facilitating installation and disassembly, and the connection is stable and reliable, with a compact structure and small space occupation.
[0045] Please see Figure 5 In this embodiment, a rotating sleeve 31 for moving the umbrella pole 2 is fixedly sleeved on the umbrella pole 2, and the rotating sleeve 31 is threadedly connected to the sleeve 3. The end of the umbrella pole 2 extends from one end of the uterine lifter body 1 to the other end, and the axial length between the rotating sleeve 31 and the end of the umbrella pole 2 away from the uterine lifter body 1 is greater than the axial length of the umbrella rib 22. In use, rotating the umbrella pole 2 achieves the effect of adjusting the positional relationship between the umbrella pole 2 and the sleeve 3, and the rotating sleeve 31 drives the umbrella pole 2 to slide up and down along the sleeve 3; at the same time, the connection between the rotating sleeve 31 and the sleeve 3 is firm and reliable, which can effectively prevent the umbrella pole 2 from sliding randomly. In actual use, it is only necessary to retract the umbrella rib 22 and the end of the umbrella surface 21 into the sleeve 3, so the lengths of the sleeve 3, the umbrella pole 2, and the umbrella rib 22 can all be designed according to actual needs.
[0046] Please see Figure 5 The inner side of the sleeve 3 near the umbrella rib 22 has a chamfer, which guides the rib 22 during folding. The chamfer design, through its beveled structure, provides a natural guide when the rib 22 is folded, allowing the end of the rib 22 to slide more smoothly into the inner side of the sleeve 3. This beveled transition reduces direct collision between the rib 22 and the inner wall of the sleeve 3, lowering folding resistance. Simultaneously, the chamfer effectively prevents interference between the end edges of the rib 22 and the inner wall of the sleeve 3 during folding, thus preventing jamming.
[0047] Please see Figure 1 In this embodiment, the umbrella surface 21 is designed as a thin and transparent structure, which reduces the space occupied by the umbrella surface 21 when stored, making it easier to store smoothly; at the same time, it can also reduce the weight, thereby reducing the pressure on the umbrella ribs 22; in addition, the transparent structure of the umbrella surface 21 can improve the clarity of the surgical field of vision.
[0048] The specific usage method of this embodiment is as follows:
[0049] In use, pull the control lever 4 outward to retract the umbrella ribs 22, then rotate the umbrella rod 2 so that the umbrella ribs 22 and the end of the umbrella surface 21 slide into the sleeve 3; then insert the uterine lifting umbrella assembly into the uterus through the vagina in the usual way, and then slowly push the control lever 4 inward so that the umbrella ribs 22 are reset under the elastic deformation of the torsion spring 52. When the sliding ring 42 and the limiting ring 43 abut, the umbrella ribs 22 no longer open and are perpendicular to the umbrella rod 2, so that the umbrella surface 21 forms a plane.
[0050] When it is necessary to remove the uterine lifter assembly from the uterus, pull the control lever 4 outward to retract the umbrella ribs 22, then rotate the umbrella rod 2 so that the umbrella ribs 22 and the end of the umbrella surface 21 slide into the sleeve 3. Then remove the uterine lifter assembly from the uterus in the usual manner.
[0051] In summary, this invention, by arranging the umbrella surface 21 on the umbrella ribs 22, and ensuring that the umbrella ribs 22 are perpendicular to the umbrella pole 2 under the control of the umbrella rib angle adjustment component, makes the umbrella surface 21 form a plane, thereby increasing the contact area with the uterus and reducing the risk of uterine perforation. Simultaneously, the umbrella surface 21 effectively prevents internal uterine components from sinking between adjacent umbrella ribs 22, thus ensuring a clear surgical field and improving the precision of surgical procedures. Therefore, this invention effectively overcomes the various shortcomings of the prior art.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A novel uterine lifting device, characterized in that, include: The uterine lifting device body, the uterine lifting umbrella assembly, and the storage component are installed on the uterine lifting device body; The uterine-lifting umbrella assembly includes a hollow umbrella pole, an umbrella canopy, and multiple umbrella ribs. One end of the umbrella pole is movably disposed within the storage component, which is used to store the uterine-lifting umbrella assembly. One end of each umbrella rib is rotatably mounted on the other end of the umbrella pole, and the umbrella canopy covers the umbrella rib. Each umbrella rib is provided with an umbrella rib angle adjustment component between it and the umbrella pole, and the rotation angle between the umbrella rib and the umbrella pole is set to 0° to 90°.
2. The novel uterine lifting device according to claim 1, characterized in that: The umbrella rib angle adjustment component includes a torsion spring, a traction line, and a fixing shaft; One end of the umbrella pole is provided with a rotating groove, and the fixed shaft is fixedly installed in the rotating groove; The torsion spring is movably sleeved on the fixed shaft, one end of the torsion spring is fixedly connected to the umbrella rod, and the other end of the torsion spring is fixedly connected to the umbrella rib. The umbrella pole has a through hole penetrating the inner and outer walls of the umbrella pole. One end of the traction line is fixedly connected to the umbrella rib, and the other end of the traction line passes through the through hole and extends into the umbrella pole. The axial length between the through hole and the end of the umbrella pole away from the body of the uterine lifter is greater than the axial length between the intersection of the traction line and the umbrella rib and the end of the umbrella pole away from the body of the uterine lifter. The traction line, the umbrella rib, and the umbrella pole form a triangle when the umbrella rib is opened.
3. The novel uterine lifting device according to claim 2, characterized in that: When the angle between the umbrella rib and the umbrella pole is 90°, the height distance between the center point of the fixed shaft and the top surface of the umbrella rib is equal to the height distance between the center point of the fixed shaft and the top surface of the umbrella pole.
4. The novel uterine lifting device according to claim 2, characterized in that: A sliding ring is slidably installed inside the umbrella pole, and one end of the traction line passing through the through hole is fixedly connected to the sliding ring; a control rod is fixedly connected to the sliding ring, and the control rod passes through the end of the umbrella pole.
5. The novel uterine lifting device according to claim 4, characterized in that: A limiting ring is fixedly installed inside the umbrella pole. When the top of the sliding ring abuts against the bottom of the limiting ring, the angle between the umbrella rib and the umbrella pole is 90°.
6. The novel uterine lifting device according to claim 1, characterized in that: The storage component is configured as a hollow sleeve, one end of which is detachably mounted on the body of the uterine lifter; one end of the umbrella rod is movably mounted inside the sleeve, the inner diameter of the sleeve is set to A, the outer diameter of the umbrella rod is set to B, and the thickness of the umbrella rib is set to C, where A>B+2C.
7. The novel uterine lifting device according to claim 6, characterized in that: A rotating sleeve for moving the umbrella pole is fixedly sleeved on the umbrella pole, and the rotating sleeve is threadedly connected to the sleeve; the end of the umbrella pole extends from one end of the uterine lifter body to the other end, and the axial length between the rotating sleeve and the end of the umbrella pole away from the uterine lifter body is greater than the axial length of the umbrella rib.
8. The novel uterine lifting device according to claim 6, characterized in that: The sleeve has a chamfer on the inner side of the end near the umbrella rib, and the chamfer is used to guide the folding of the umbrella rib.
9. The novel uterine lifting device according to claim 2, characterized in that: The through hole is inclined, with the outward end of the through hole being higher than the inward end.
10. The novel uterine lifting device according to claim 6, characterized in that: The sleeve is threadedly connected to the body of the uterine lifting device.