An auxiliary device for uterine surgery

Abstract

The application relates to the technical field of medical devices, in particular to an auxiliary device for uterine surgery, which comprises a bed body, the bottom of the bed body is provided with a clamping assembly, the clamping assembly can be clamped on an operating table; the bed body is also provided with a uterine elevator and a traction assembly, the uterine elevator comprises a detachably fixed uterine cup and a handheld rod, the handheld rod is hinged on the bed body through a spherical hinge assembly, the spherical hinge assembly can adjust the angle of the uterine cup; the traction assembly comprises an arc-shaped traction plate, a plurality of winding columns are uniformly distributed on the arc-shaped traction plate, one traction line is wound on each winding column, the winding column can tighten the traction line through forward rotation on the arc-shaped traction plate; a driving plate is also slidably arranged between the winding column and the arc-shaped traction plate, one end of the driving plate close to the axis of the arc-shaped traction plate is slidably matched with the traction line, the driving plate can change the inclination angle between the traction line and the horizontal plane and loosen the traction line through movement along the length direction of the driving plate, so that the uterine surgery can be smoothly performed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an auxiliary device for uterine surgery. Background Technology

[0002] During a hysterectomy, a uterine lifter is used to elevate the uterus and open up the folds between the uterus and other tissues. This helps to clearly distinguish the boundary between the uterus and other tissues and prevents the removal of other tissues during the procedure. For example, patent document CN215129275U discloses a uterine lifter to prevent tumor spread. This lifter includes a lifter cup and a guide rod. The lifter cup elevates the uterus, and the guide rod is inserted into the uterus for support.

[0003] However, if there are tumors or other tissues in the uterus, the guide rod cannot be used properly. In such cases, medical staff currently do not use the guide rod inserted into the uterus. Instead, they use a uterine support cup to support the uterus, and then use a traction device to pull on different parts of the uterus. Because the traction device and the uterine support cup are separate, and the degree of traction varies in different parts of the uterus, the surgical procedure is cumbersome and not conducive to the smooth progress of uterine surgery. Summary of the Invention

[0004] Therefore, it is necessary to provide an auxiliary device for uterine surgery to address the technical problem that the current separate design of the traction device and the uterine cup makes surgical operation inconvenient.

[0005] The above objectives are achieved through the following technical solutions:

[0006] An auxiliary device for uterine surgery includes a bed frame with a clamping assembly at the bottom for clamping onto an operating table. The bed frame also includes a uterine lifter and a traction assembly. The uterine lifter comprises a detachably fixed uterine cup and a handheld rod, the handheld rod being hinged to the bed frame via a ball joint assembly that allows for adjustable angle of the uterine cup. The traction assembly includes an arc-shaped traction plate with its axis extending vertically. Multiple winding posts are evenly distributed on the arc-shaped traction plate, each winding post having a traction line wound around it. Rotation of the winding posts on the arc-shaped traction plate in the forward direction tightens the traction line. A drive plate is slidably disposed between the winding posts and the arc-shaped traction plate, the drive plate extending radially along the arc-shaped traction plate. One end of the drive plate near the axis of the arc-shaped traction plate slides with the traction line. Movement of the drive plate along its length changes the inclination angle between the traction line and the horizontal plane. Simultaneously, the drive plate can drive the winding posts to rotate in the reverse direction, thereby loosening the traction line.

[0007] Furthermore, the ball hinge assembly includes a ball seat with its axis extending horizontally. The ball seat is fixedly mounted on the bed frame, and a hinge ball is rotatably disposed within the ball seat. The hinge ball includes an upper hemisphere and a lower hemisphere, which have the same structure. Both the upper and lower hemispheres are provided with grooves. The upper and lower hemispheres can approach each other in the vertical direction, thereby allowing the grooves of the upper and lower hemispheres to align with each other to form a insertion hole. The insertion hole is used to install a hand handle.

[0008] Furthermore, the ball seat is also coaxially provided with a friction ring and a locking sleeve. The friction ring has a hemispherical hole, the axis of which is consistent with the axis of the ball seat. The locking sleeve is threaded into the ball seat. The movement of the locking sleeve along the axis of the ball seat can push the friction ring closer to the upper and lower hemispheres, so that the upper and lower hemispheres enter the hemispherical hole and mate to form a insertion hole.

[0009] Furthermore, the winding post includes a detachably fixed operating knob and a connecting pin. The drive plate is provided with a slide groove extending along its length direction. The connecting pin can slide along the slide groove. An external gear is rotatably connected to the outside of the connecting pin through a one-way bearing. The one-way bearing allows the external gear to drive the connecting pin to rotate in the opposite direction only. The drive plate is provided with a rack, which meshes with the external gear.

[0010] Furthermore, the operating knob has a V-shaped groove with the opening of the V-shaped groove facing upwards, and the bottom of the V-shaped groove has an anti-detachment hook, which is used to prevent the traction line from detaching from the V-shaped groove.

[0011] Furthermore, the bottom of the V-shaped groove is also provided with an installation groove, in which an elastic piece is provided. The elastic piece has a V-shaped clamping part, the opening of which is horizontally set, and the V-shaped clamping part is used to clamp the traction line.

[0012] Furthermore, the bottom of the drive plate is provided with a limiting groove, and the connecting nail has a base plate located below the drive plate. The base plate has a right-angled edge that can be engaged in the limiting groove, thereby restricting the drive plate from sliding away from the axis of the arc-shaped traction plate. The upper side of the rack is provided with a protrusion, and the bottom edge of the arc-shaped traction plate can cooperate with the protrusion to stop it, thereby restricting the drive plate from sliding closer to the axis of the arc-shaped traction plate.

[0013] Furthermore, the drive plate has an arc-shaped groove at one end facing the axis of the arc-shaped traction plate, and the arc-shaped groove is used to push the traction line.

[0014] Furthermore, the bed is provided with a connecting seat, in which a first connecting rod is rotatably mounted. The connecting seat is also provided with a positioning shaft that can slide in the horizontal direction. The positioning shaft and the first connecting rod are anti-rotationally engaged via a spline. A second connecting rod is vertically mounted on the first connecting rod. The arc-shaped traction plate is detachably and fixedly connected to the second connecting rod. A nut is threadedly connected to one end of the positioning shaft located outside the connecting seat. A spring is also provided between the nut and the connecting seat. By pushing the nut to compress the spring, the positioning shaft can disengage from the anti-rotationally engaged with the first connecting rod.

[0015] Furthermore, the clamping assembly includes two clamping plates, which are located on both sides of the bed in the horizontal direction, and the two clamping plates can move closer to or further away from each other in the horizontal direction.

[0016] The beneficial effects of this invention are:

[0017] The uterine surgery auxiliary device provided by this invention is installed on the operating table when performing surgery on a uterus with tumor tissue. Then, multiple traction lines on the traction assembly are used to pull the top of the uterus, and the tail of the uterus is supported by the lifting cup. Since the ball joint assembly can adjust the angle of the lifting cup and the traction assembly can adjust the tilt angle between the traction lines and the horizontal plane, it is convenient to perform different degrees of traction on the uterus. At the same time, the operation is simple and ensures the smooth progress of uterine surgery. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device for uterine surgery provided in an embodiment of the present invention;

[0019] Figure 2 This is a top view of an auxiliary device for uterine surgery provided according to an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Sectional view of AA;

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point C;

[0022] Figure 5 This is a schematic diagram of the upper or lower hemisphere in an auxiliary device for uterine surgery provided in an embodiment of the present invention.

[0023] Figure 6 for Figure 3 Enlarged view of the structure at point D;

[0024] Figure 7 for Figure 3 Enlarged view of the structure at point E in the middle;

[0025] Figure 8 for Figure 2 BB section view;

[0026] Figure 9 for Figure 8 Enlarged view of the structure at point F in the middle;

[0027] Figure 10 for Figure 9 Enlarged view of the structure at point H in the middle;

[0028] Figure 11 for Figure 2 Middle GG sectional view;

[0029] Figure 12 This is a schematic diagram of the drive plate in an auxiliary device for uterine surgery provided in an embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram of the elastic sheet in an auxiliary device for uterine surgery provided in an embodiment of the present invention.

[0031] in:

[0032] 101. Bed frame; 102. Bolt; 103. Clamping plate; 1011. Connecting seat; 200. Ball joint assembly; 201. Ball seat; 202. Locking sleeve; 204. Friction ring; 205. Hinge ball; 2051. Insertion post; 2052. Groove; 2053. Insertion slot; 300. Pulling assembly; 301. Operating knob; 3011. V-groove; 3012. Anti-detachment hook; 302. Positioning pin; 303. Retaining ring; 304. External gear; 305. Connecting nail; 306. Drive plate; 3061. Limiting groove; 3062. Arc groove; 3063. Rack; 3064. Protrusion; 3065. Support bar; 307. One-way bearing; 308. Elastic sheet; 3081. V-shaped clamping part; 309. Arc traction plate; 401. Spring; 402. Nut; 403. Spline; 404. First connecting rod; 405. Second connecting rod; 406. Positioning shaft; 500. Uterine lifter; 501. Hand handle; 502. Uterine lifter cup; 503. Screw sleeve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] like Figures 1 to 13 As shown, an embodiment of the present invention provides an auxiliary device for uterine surgery, including a bed 101. The bottom of the bed 101 is provided with a clamping assembly capable of clamping onto an operating table. The bed 101 is also provided with a uterine lifter 500 and a traction assembly 300. The uterine lifter 500 includes a detachably fixedly connected uterine lifter cup 502 and a hand handle 501. The hand handle 501 is hinged to the bed 101 via a ball joint assembly 200, which allows the angle of the uterine lifter cup 502 to be adjusted. The traction assembly 300 includes an arc-shaped traction plate 309, the axis of which extends vertically. Multiple winding posts are evenly distributed on the 09, extending in the vertical direction, and each winding post is wound with a traction line (not shown in the figure). The winding post can tighten the traction line by rotating in the forward direction on the arc-shaped traction plate 309. A drive plate 306 is also slidably disposed between the winding post and the arc-shaped traction plate 309. The length of the drive plate 306 extends radially along the arc-shaped traction plate 309. The end of the drive plate 306 near the axis of the arc-shaped traction plate 309 is slidably engaged with the traction line. The drive plate 306 can change the inclination angle between the traction line and the horizontal plane by moving along its length direction. At the same time, the drive plate 306 can drive the winding post to rotate in the reverse direction to loosen the traction line.

[0037] In this way, when performing surgery on a uterus with tumor tissue, the uterine surgery auxiliary device is installed on the operating table. Then, the top of the uterus is pulled by multiple traction lines on the traction assembly 300, and the tail of the uterus is supported by the lifting cup 502. Since the ball joint assembly 200 can adjust the angle of the lifting cup 502, and the traction assembly 300 can adjust the tilt angle between the traction lines and the horizontal plane, it is convenient to perform different degrees of traction on the uterus. At the same time, the operation is simple and ensures the smooth progress of uterine surgery.

[0038] like Figure 6 As shown, the handheld rod 501 has an annular step, and the end of the uterine cup 502 is stopped by the annular step. A threaded sleeve 503 is rotatably provided on the handheld rod 501, and the threaded sleeve 503 is threadedly connected to the end of the uterine cup 502, thereby realizing a detachable and fixed connection between the uterine cup 502 and the handheld rod 501. The uterine cup 502 has a bowl-shaped structure.

[0039] like Figure 4 and Figure 5 As shown, the ball joint assembly 200 includes a ball seat 201, the axis of which extends horizontally. The ball seat 201 is fixedly mounted on the bed 101. A hinge ball 205 is rotatably mounted in the ball seat 201. The hinge ball 205 includes an upper hemisphere and a lower hemisphere. The upper and lower hemispheres have the same structure. Both the upper and lower hemispheres are provided with grooves 2052. The upper and lower hemispheres can approach each other in the vertical direction, so that the grooves 2052 of the upper hemisphere and the grooves 2052 of the lower hemisphere align to form a insertion hole. The insertion hole is used to install the hand handle 501.

[0040] The upper hemisphere or the lower hemisphere is provided with a plug post 2051 and a plug groove 2053. The plug post 2051 and the plug groove 2053 extend in the vertical direction, and the plug post 2051 and the plug groove 2053 can be plugged in to fit together, so that the upper hemisphere and the lower hemisphere can be connected to each other to form a hinged ball 205.

[0041] The ball seat 201 also includes a friction ring 204 and a locking sleeve 202 coaxially. The friction ring 204 has a hemispherical hole, the axis of which is aligned with the axis of the ball seat 201. The locking sleeve 202 is threaded into the ball seat 201. Movement of the locking sleeve 202 along the axis of the ball seat 201 pushes the friction ring 204 closer to the upper and lower hemispheres, causing them to enter the hemispherical hole and align to form a mating hole. When the friction ring 204 is tightly fitted with the upper and lower hemispheres, the friction between the hinged ball 205 formed by the upper and lower hemispheres and the hemispherical hole is high, making the hinged ball 205 difficult to rotate, thus locking the angle of the handle 501. The friction ring 204 is made of rubber.

[0042] like Figure 7 , Figure 9 and Figure 12 As shown, the winding post includes a detachably fixed operating knob 301 and a connecting pin 305. The drive plate 306 has a groove extending along its length, allowing the connecting pin 305 to slide along the groove. An external gear 304 is rotatably connected to the outside of the connecting pin 305 via a one-way bearing 307. The one-way bearing 307 ensures that the external gear 304 can only drive the connecting pin 305 to rotate in the opposite direction. The drive plate 306 has a rack 3063, which meshes with the external gear 304. In this embodiment, when the drive plate 306 slides towards the axis of the traction plate 309, the external gear 304 drives the connecting pin 305 to rotate synchronously in the opposite direction, thus loosening the traction cable. (The positive direction is...) Figure 7 The counter-clockwise direction when viewed from top to bottom is the opposite direction. Figure 7 The clockwise direction when viewed from top to bottom.

[0043] Specifically, the operating knob 301 and the connecting pin 305 are fixedly connected by the positioning pin 302. The drive plate 306 is also provided with a support strip 3065, which is respectively positioned on both sides of the slide groove with the rack 3063. The side of the support strip 3065 facing the rack 3063 is smooth. The arc-shaped traction plate 309 is provided with a mounting hole, and the winding post is placed in the mounting hole. A retaining ring 303 is fixedly installed in the mounting hole. The external gear 304 rotates with the retaining ring 303, and the retaining ring 303 restricts the up-and-down movement of the external gear 304, keeping the external gear 304 meshed with the rack 3063 of the drive plate 306. The end of the drive plate 306 away from the axis of the arc-shaped traction plate 309 is provided with anti-slip texture to facilitate push-pull operation.

[0044] When tightening the traction line, the winding post is rotated in the forward direction by operating knob 301, which increases the number of turns of the traction line on operating knob 301.

[0045] like Figure 9 , Figure 10 and Figure 13 As shown, the operating knob 301 has a V-shaped groove 3011 with its opening facing upwards. The bottom of the V-shaped groove 3011 has an anti-detachment hook 3012, which prevents the traction cable from detaching from the V-shaped groove 3011. The bottom of the V-shaped groove 3011 also has a mounting groove containing an elastic piece 308. The elastic piece 308 has a V-shaped clamping part 3081 with a horizontal opening, used to clamp the traction cable. This clamps the end of the traction cable and facilitates its removal from the elastic piece 308.

[0046] The bottom of the drive plate 306 is provided with a limiting groove 3061, and the connecting nail 305 has a base plate located below the drive plate 306. The base plate has a right-angled edge that can be engaged in the limiting groove 3061, thereby restricting the drive plate 306 from sliding away from the axis of the arc-shaped traction plate 309. The upper side of the rack 3063 is provided with multiple protrusions 3064, and the bottom edge of the arc-shaped traction plate 309 can be engaged with the protrusions 3064 to stop and restrict the drive plate 306 from sliding closer to the axis of the arc-shaped traction plate 309.

[0047] When the traction line is taut, it presses down on the drive plate 306, causing the end of the drive plate 306 near the axis of the arc-shaped traction plate 309 to tilt downwards, while the end away from the axis of the arc-shaped traction plate 309 tilts upwards. This allows the limiting groove 3061 at the bottom of the drive plate 306 to engage with the right-angle edge of the base plate, preventing the drive plate 306 from sliding away from the axis of the arc-shaped traction plate 309. The protrusion 3064 on the rack 3063 engages with the bottom edge of the arc-shaped traction plate 309, preventing the drive plate 306 from sliding towards the axis of the arc-shaped traction plate 309. Thus, the drive plate 306 remains fixed, preventing the connecting pin 305 from rotating, achieving automatic locking of the traction line. When adjustment of the traction line is required, the end of the drive plate 306 away from the axis of the arc-shaped traction plate 309 is pressed down, restoring the drive plate 306 to a horizontal state. At this time, the protrusion 3064 no longer engages with the bottom edge of the arc-shaped traction plate 309, allowing the drive plate 306 to slide normally. In other embodiments, the support bar 3065 is also provided with a protrusion 3064.

[0048] like Figure 12 As shown, the drive plate 306 has an arc-shaped groove 3062 at one end facing the axis of the arc-shaped traction plate 309. The arc-shaped groove 3062 is used to push the traction line. The arc-shaped groove 3062 can prevent the traction line from detaching from the drive plate 306.

[0049] like Figure 8 and Figure 11As shown, the bed body 101 is provided with a connecting seat 1011, in which a first connecting rod 404 is rotatably mounted. The connecting seat 1011 also provides a positioning shaft 406 capable of sliding horizontally. The positioning shaft 406 and the first connecting rod 404 are anti-rotationally engaged via a spline 403. A second connecting rod 405 is vertically mounted on the first connecting rod 404. The arc-shaped traction plate 309 is detachably and fixedly connected to the second connecting rod 405. A nut 402 is threadedly connected to one end of the positioning shaft 406 outside the connecting seat 1011. A spring 401 is also provided between the nut 402 and the connecting seat 1011. By pushing the nut 402, the spring 401 is compressed, disengaging the positioning shaft 406 from the anti-rotational engagement with the first connecting rod 404. Specifically, the positioning shaft 406 is provided with a spline 403, and the first connecting rod 404 is provided with a keyway. The first connecting rod 404 is initially in a horizontal state. During the procedure, pushing nut 402 compresses spring 401 and causes positioning shaft 406 to slide axially. This disengages the keyway on first connecting rod 404 from spline 403 on positioning shaft 406, allowing first connecting rod 404 to rotate relative to positioning shaft 406 until it reaches a vertical position. Consequently, second connecting rod 405 and arc-shaped traction plate 309 remain horizontal. Then, releasing nut 402 resets spring 401, which in turn resets positioning shaft 406. This re-engages spline 403 on positioning shaft 406 with keyway on first connecting rod 404, preventing first connecting rod 404 from rotating and maintaining its vertical position.

[0050] like Figure 8 As shown, the clamping assembly includes two clamping plates 103, which are located on opposite sides of the bed 101 in the horizontal direction. The two clamping plates 103 can move closer to or further apart in the horizontal direction. Specifically, each side of the bed 101 has at least two connecting ears with threaded holes. Bolts 102 are rotatably connected to the clamping rod, and the bolts 102 are threaded into the threaded holes. Rotating the bolts 102 can push the clamping plates 103 to move left and right, thus allowing the two clamping plates 103 to move closer to or further apart. In other embodiments, a hydraulic telescopic rod or an electric push rod can be used to drive the clamping plates 103 to move left and right.

[0051] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0052] The uterine surgery auxiliary device is installed on the operating table, and the patient lies on the bed 101. By rotating the first connecting rod 404, the arc-shaped traction plate 309 is positioned above the patient. The hand handle 501 of the uterine lifter 500 is inserted into the ball seat 201 and positioned in the grooves 2052 of the upper and lower hemispheres. The locking sleeve 202 is screwed on to bring the friction ring 204 close to the upper and lower hemispheres, so that the upper and lower hemispheres clamp the hand handle 501. Then, the patient's abdomen is cut open, and the uterine lifter 502 is rotated to be aligned with the tail of the uterus and supported. The locking sleeve 202 is screwed on again to make the friction ring 204 fit tightly with the upper and lower hemispheres. At this time, the hand handle 501 cannot be rotated, thus locking the angle of the uterine lifter 502.

[0053] Then, multiple traction wires are connected to the top of the uterus, so that each traction wire passes through the arc-shaped groove 3062 on the drive plate 306 and is wound around the operating knob 301 of the winding post. The end of the traction wire enters the V-shaped groove 3011 on the operating knob 301 and is clamped by the V-shaped clamping part 3081 of the elastic piece 308. Because the traction wire is taut after being pulled, the drive plate 306 tilts, so that the drive plate 306 can remain fixed, and the winding post cannot rotate, thus locking the traction wire.

[0054] If it is necessary to increase the angle of inclination between the traction suture and the horizontal plane during the operation, the drive plate 306 can be pressed down first to make the drive plate 306 horizontal. Then, the drive plate 306 can be pushed to slide towards the axis of the traction plate. The arc groove 3062 of the drive plate 306 can push the traction suture, increasing the angle of inclination between the traction suture and the horizontal plane. At the same time, the drive plate 306 will drive the external gear 304 to rotate. The external gear 304 will drive the operating knob 301 to rotate in the opposite direction, so as to relax the traction suture and prevent the traction suture from becoming further taut, ensuring that the degree of tension of the traction suture is consistent before and after.

[0055] After the surgery, remove the uterine lifter 500 from the bed 101, then press the nut 402 to rotate the first connecting rod 404 to a horizontal position, so that the arc-shaped traction plate 309 is no longer above the patient.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An auxiliary device for uterine surgery, characterized in that, Includes a bed frame, with a clamping assembly at the bottom of the bed frame that can be clamped onto the operating table; The bed is also equipped with a uterine lifter and a traction assembly. The uterine lifter includes a detachably fixed uterine cup and a hand handle. The hand handle is hinged to the bed via a ball joint assembly, which allows the angle of the uterine cup to be adjusted. The traction assembly includes an arc-shaped traction plate with its axis extending vertically. Multiple winding posts are evenly distributed on the arc-shaped traction plate, each winding post having a traction line wound around it. The traction line is used to pull the uterus. Rotation of the winding posts on the arc-shaped traction plate in the forward direction tightens the traction line. A drive plate is also slidably disposed between the winding posts and the arc-shaped traction plate. The length of the drive plate extends radially along the arc-shaped traction plate. One end of the drive plate near the axis of the arc-shaped traction plate slides with the traction line. Moving the drive plate along its length changes the inclination angle between the traction line and the horizontal plane. Simultaneously, the drive plate can drive the winding posts to rotate in the reverse direction, thereby loosening the traction line.

2. The auxiliary device for uterine surgery according to claim 1, characterized in that, The ball joint assembly includes a ball seat with its axis extending horizontally. The ball seat is fixedly mounted on the bed. A hinge ball is rotatably mounted in the ball seat. The hinge ball includes an upper hemisphere and a lower hemisphere. The upper and lower hemispheres have the same structure and are provided with grooves. The upper and lower hemispheres can approach each other in the vertical direction, so that the grooves of the upper and lower hemispheres align with the grooves of the lower hemispheres to form a insertion hole. The insertion hole is used to install a hand handle.

3. The auxiliary device for uterine surgery according to claim 2, characterized in that, The ball seat also has a friction ring and a locking sleeve coaxially arranged. The friction ring has a hemispherical hole, the axis of which is consistent with the axis of the ball seat. The locking sleeve is threaded into the ball seat. The movement of the locking sleeve along the axis of the ball seat can push the friction ring closer to the upper and lower hemispheres, so that the upper and lower hemispheres enter the hemispherical hole and mate to form a insertion hole.

4. The auxiliary device for uterine surgery according to claim 1, characterized in that, The winding post includes a detachably fixed operating knob and a connecting pin. The drive plate is provided with a slide groove extending along its length. The connecting pin can slide along the slide groove. An external gear is rotatably connected to the outside of the connecting pin through a one-way bearing. The one-way bearing allows the external gear to drive the connecting pin to rotate in the opposite direction only. The drive plate is provided with a rack, which meshes with the external gear.

5. The auxiliary device for uterine surgery according to claim 4, characterized in that, The operating knob has a V-shaped groove with the opening facing upwards. The bottom of the V-shaped groove has an anti-detachment hook to prevent the traction line from detaching from the V-shaped groove.

6. The auxiliary device for uterine surgery according to claim 5, characterized in that, The bottom of the V-shaped groove is also provided with an installation groove, in which an elastic piece is provided. The elastic piece has a V-shaped clamping part, the opening of which is horizontally set, and the V-shaped clamping part is used to clamp the traction line.

7. The auxiliary device for uterine surgery according to claim 4, characterized in that, The bottom of the drive plate is provided with a limiting groove, and the connecting nail has a base plate located below the drive plate. The base plate has a right-angled edge that can be engaged in the limiting groove, thereby restricting the drive plate from sliding away from the axis of the arc-shaped traction plate. The upper side of the rack is provided with a protrusion, and the bottom edge of the arc-shaped traction plate can cooperate with the protrusion to stop it, thereby restricting the drive plate from sliding closer to the axis of the arc-shaped traction plate.

8. The auxiliary device for uterine surgery according to claim 4, characterized in that, The drive plate has an arc-shaped groove at one end facing the axis of the arc-shaped traction plate, which is used to push the traction line.

9. The auxiliary device for uterine surgery according to claim 1, characterized in that, The bed is provided with a connecting seat, in which a first connecting rod is rotatably mounted. The connecting seat is also provided with a positioning shaft that can slide in the horizontal direction. The positioning shaft and the first connecting rod are anti-rotationally engaged by a spline. A second connecting rod is vertically mounted on the first connecting rod. The arc-shaped traction plate is detachably and fixedly connected to the second connecting rod. A nut is threadedly connected to one end of the positioning shaft outside the connecting seat. A spring is also provided between the nut and the connecting seat. By pushing the nut to compress the spring, the positioning shaft can be disengaged from the anti-rotationally engaged with the first connecting rod.

10. The auxiliary device for uterine surgery according to claim 1, characterized in that, The clamping assembly includes two clamping plates, which are located on both sides of the bed in the horizontal direction. The two clamping plates can move closer to or further away from each other in the horizontal direction.

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