Adjustable bracket for external expansion of breast augmentation incision and use method thereof

Abstract

The present invention relates to the technical field of medical instruments for breast augmentation surgery, and discloses an adjustable bracket for externally expanding a breast augmentation incision, comprising a bracket, a labor-saving support rod, and a retractor, wherein a crossbeam axis is fixed to the bracket, a strip groove is formed through the side wall of the labor-saving support rod, the crossbeam axis movably passes through the strip groove, a left slider and a right slider are slidably arranged in the strip groove, the left slider and the right slider are respectively located on either side of the axis of the crossbeam axis, the left slider and the right slider both contact the crossbeam axis to form a lever fulcrum, and the retractor is detachably mounted on one end of the labor-saving support rod. The labor-saving support rod is moved radially along the crossbeam axis to adjust the deflection fulcrum of the labor-saving support rod, and then the left slider and the right slider are moved to contact the crossbeam axis to stabilize the fulcrum position of the labor-saving support rod, so that the labor-saving support rod drives the retractor to deflect around the fulcrum to expand the incision, and when the fulcrum is adjusted, the distance between the end of the retractor hook and the fulcrum is made smaller than the distance between the tail end of the labor-saving support rod and the fulcrum, thereby making the power arm larger than the resistance arm, thereby achieving a labor-saving effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments for breast augmentation surgery, and in particular to an adjustment bracket for externally expanding a breast augmentation incision and a use method thereof. Background Art

[0002] Breast augmentation surgery refers to the use of surgery, medical devices, drugs, and other medical techniques to repair and reshape the shape of the chest, thereby enhancing the body's external beauty. In the prior art, when performing breast augmentation surgery with implants, an incision is made in the armpit, and a retractor is used to open the incision to expand the surgical field of view. The adhesion between the skin and tissue is peeled off to form a channel for the implant to be placed in the chest, and a cavity is formed behind the pectoralis major muscle or behind the mammary gland for the implant to be placed. The implant is then inserted through the incision and slowly delivered to the predetermined cavity. During the operation, the doctor needs to use one hand to operate the retractor to support the surgical incision, and the other hand to use medical devices to perform the operation. During the operation, the doctor needs to hold the retractor for a long time to operate it, and the force acting on the retractor is generally large. Operating the retractor with a large force for a long time is prone to fatigue and loss of strength, causing the retractor to shake or lose strength, affecting the progress of the operation and reducing the efficiency of the operation. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an adjustment bracket for external expansion of a breast augmentation incision and a method of use, so as to solve the problems mentioned in the background art.

[0004] The objective of the present invention is achieved through the following technical solutions: an adjustment bracket for external expansion of a breast augmentation incision, comprising a bracket, a labor-saving support rod and a retractor, a crossbeam shaft being fixed on the bracket, a strip groove being penetrated through the side wall of the labor-saving support rod, the crossbeam shaft being movable through the strip groove, a left slider and a right slider being slidingly arranged in the strip groove, the left slider and the right slider being respectively located on both sides of the axis of the crossbeam shaft, the left slider and the right slider both contact the crossbeam shaft to form a lever fulcrum, and the retractor hook being detachably mounted on one end of the labor-saving support rod.

[0005] The effect of adopting the above technical solution is that, through the setting of the strip groove, the labor-saving support rod can move radially along the beam axis to adjust the deflection fulcrum of the labor-saving support rod, and then the left slider and the right slider are moved to contact the beam axis to stabilize the fulcrum position of the labor-saving support rod, so that the labor-saving support rod drives the retractor hook to deflect around the fulcrum to open the incision. When adjusting the fulcrum, the distance between the end of the retractor hook and the fulcrum is made smaller than the distance between the tail of the labor-saving support rod and the fulcrum, so that the power arm is larger than the resistance arm, achieving the effect of saving labor, reducing the holding force of the retractor hook, reducing the intensity of surgical operation, and effectively preventing the occurrence of force loss.

[0006] In some embodiments, the top wall and the bottom wall of the strip groove are provided with sliding grooves, and the top and bottom of the left slider and the top and bottom of the right slider are fixed with sliding bars, and the sliding bars are adapted to fit in the sliding grooves.

[0007] In some embodiments, the right slider is located between the left slider and the hook, the end of the labor-saving support rod away from the hook is threadedly connected with a screw, and the tail of the screw penetrates into the strip groove and is rotatably connected to the left slider.

[0008] In some embodiments, a straight rack is slidably provided on one end of the labor-saving support rod away from the screw rod, the straight rack is inserted into the strip groove and is fixedly connected to the right slider, a driving cavity is provided in the labor-saving support rod, a driving shaft is rotatably arranged in the driving cavity, a gear is keyed on the driving shaft, and the gear is engaged with the straight rack.

[0009] In some embodiments, a rectangular groove and a circular hole are sequentially opened on the force-saving support rod in the direction close to the driving cavity, and the two ends of the circular hole are respectively connected to the rectangular groove and the driving cavity, and the driving shaft is rotatably passed through the circular hole through a bearing, and a rectangular block is adapted to be fitted in the rectangular groove, and one end of the driving shaft is slidably passed through the rectangular block, and a spring is provided in the rectangular groove, and the spring is sleeved on the driving shaft, one end of the spring is connected to the rectangular block, and the other end is connected to the step formed by the rectangular groove and the circular hole. When the spring is in normal state, the rectangular block is partially adapted to be fitted in the rectangular groove, and a pull ring is provided at the end of the rectangular block away from the driving shaft.

[0010] In some embodiments, an end of the left slider close to the beam axis and an end of the right slider close to the beam axis are both provided with an arc surface, and the radius of the arc surface is equal to the radius of the beam axis.

[0011] In some embodiments, the bracket includes a bar seat and a telescopic rod, the telescopic rods are fixed at both ends of the top of the bar seat, the telescopic rod includes a fixed rod and a movable rod, one end of the fixed rod is fixedly connected to the bar seat, and the other end is slidably passed through the movable rod, the two ends of the beam axis are respectively connected to the two movable rods, and the two movable rods move synchronously.

[0012] In some embodiments, a cavity is provided in the bar seat, a screw is rotatably provided in the fixed rod, the movable rod is threadedly mounted on the screw, one end of the screw is inserted into the cavity and is keyed to a first bevel gear, a main shaft is rotatably provided in the cavity, two second bevel gears are keyed to the main shaft, the two second bevel gears are respectively engaged with the two first bevel gears, and one end of the main shaft passes through the bar seat and is fixed with a turntable.

[0013] In some embodiments, an external threaded tube is fixed on the labor-saving support rod, the external threaded tube is hollow, the straight rack is passed through the external threaded tube, an internal threaded hole is opened at the tail of the hook, and the hook is threadedly connected to the external threaded tube.

[0014] A method for using an adjustment bracket for external expansion of a breast augmentation incision comprises the following steps:

[0015] S1. Install the retractor; install the internal threaded hole of the retractor corresponding to the external threaded pipe on the labor-saving support rod;

[0016] S2, adjust the use height of the hook; by rotating the main shaft to drive the two second bevel gears to rotate, the second bevel gears are engaged with the first bevel gear to drive the two screws to rotate synchronously, so that the two telescopic rods are synchronously extended and retracted to adjust the use height of the hook;

[0017] S3. Adjust the horizontal position of the draw hook; the labor-saving support rod can move along the axial direction of the beam axis to adjust the horizontal position of the draw hook;

[0018] S4. Adjust the fulcrum of the draw hook; the labor-saving support rod can move along the radial direction of the beam axis to adjust the deflection fulcrum of the labor-saving support rod, and move the left slider and the right slider to contact the beam axis to stabilize the fulcrum position of the labor-saving support rod;

[0019] S5, disassembling the retractor; after completing the adjustment in step S4, the operation can be performed. After the operation is completed, the retractor is disassembled for cleaning.

[0020] The beneficial effects of the present invention are:

[0021] By setting the strip groove, the labor-saving support rod can move radially along the crossbeam axis to adjust the deflection fulcrum of the labor-saving support rod, and then the left slider and the right slider are moved to contact the crossbeam axis to stabilize the fulcrum position of the labor-saving support rod, so that the labor-saving support rod drives the retractor hook to deflect around the fulcrum to open the incision. When adjusting the fulcrum, the distance between the end of the retractor hook and the fulcrum is made smaller than the distance between the tail of the labor-saving support rod and the fulcrum, so that the power arm is larger than the resistance arm, achieving the effect of saving labor, reducing the holding force of the retractor hook, reducing the intensity of surgical operation, and effectively preventing the occurrence of force loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional view of an adjustment bracket for external expansion of a breast augmentation incision according to the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of a labor-saving support rod in an adjustable bracket for external expansion of a breast augmentation incision according to the present invention;

[0024] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic structural diagram of an adjustment bracket for external expansion of a breast augmentation incision according to the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of a bracket in an adjustable bracket for external expansion of a breast augmentation incision according to the present invention;

[0027] In the figure, 1- bracket, 2- labor-saving support rod, 3- hook, 4- beam shaft, 5- strip groove, 6- left slider, 7- right slider, 8- slide groove, 9- slide bar, 10- screw, 11- straight rack, 12- drive cavity, 13- drive shaft, 14- gear, 15- rectangular groove, 16- round hole, 17- rectangular block, 18- spring, 19- pull ring, 20- arc surface, 21- strip seat, 22- fixed rod, 23- movable rod, 24- cavity, 25- lead screw, 26- first bevel gear, 27- main shaft, 28- second bevel gear, 29- turntable, 30- external threaded tube. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0029] like Figures 1 to 5The figure shows an adjustment bracket for external expansion of breast augmentation incision, comprising a bracket 1, a labor-saving support rod 2 and a retractor 3. A crossbeam axis 4 is fixed on the bracket 1, and a strip groove 5 is provided through the side wall of the labor-saving support rod 2. The crossbeam axis 4 movably passes through the strip groove 5. A left slider 6 and a right slider 7 are slidably provided in the strip groove 5. The left slider 6 and the right slider 7 are respectively located on both sides of the axis of the crossbeam axis 4. The left slider 6 and the right slider 7 both contact the crossbeam axis 4 to form a lever fulcrum, and the retractor 3 is detachably installed at one end of the labor-saving support rod 2; through the setting of the strip groove, the labor-saving support rod can move along the radial direction of the crossbeam axis to adjust the deflection fulcrum of the labor-saving support rod, and then the left slider and the right slider are moved to contact with the crossbeam axis to stabilize the fulcrum position of the labor-saving support rod, so that the labor-saving support rod drives the retractor to deflect around the fulcrum to expand the incision. When adjusting the fulcrum, the distance between the end of the retractor hook and the fulcrum is smaller than the distance between the tail of the labor-saving support rod and the fulcrum. The distance between them is such that the power arm is greater than the resistance arm, achieving the effect of saving effort, reducing the holding force of the retractor, reducing the intensity of surgical operation, and effectively preventing the occurrence of force loss; secondly, the fulcrum position of the effort-saving support rod 2 can be adjusted according to actual conditions, and the distance between the retractor hook 3 and the incision can be adjusted so that the retractor hook 3 can enter the incision according to the incision position, and then the effort-saving support rod 2 is pressed downward at the end away from the retractor hook 3, thereby driving the retractor hook 3 to deflect to open the surgical incision; in specific implementation, in order to make the operation of the effort-saving support rod 2 more convenient, a pull rope can be tied to the end of the effort-saving support rod 2 away from the retractor hook 3, and the pull rope can be pulled downward to drive the retractor hook 3 to deflect to open the incision, so that the effort-saving support rod 2 can be operated at a distance, and the handle posture of the retractor hook 3 can also be changed, so that the doctor can adjust to a more comfortable and convenient position for surgery, which has the advantages of easy use and high practicality.

[0030] Further, if Figure 2 As shown, an external threaded tube 30 is fixed on the labor-saving support rod 2. The external threaded tube 30 is hollow, and the straight rack 11 is passed through the external threaded tube 30. An internal threaded hole is opened at the tail of the retractor 3. The retractor 3 is threadedly connected to the external threaded tube 30, hiding the straight rack 11, which is convenient for installation and removal of the retractor 3. After the operation is completed, the retractor is convenient to be removed for cleaning. At the same time, retractors of different sizes and models can be installed on the adjustment bracket to assist in surgery, thereby increasing the scope of use.

[0031] In some embodiments, as Figures 1 to 3The end of the labor-saving support rod 2 away from the screw 10 is slidably penetrated by a straight rack 11, which penetrates into the strip groove 5 and is fixedly connected to the right slider 7. The gear 14 is meshed with the spur rack 11, and the spur rack 11 is driven by the rotating drive shaft 13 to rotate. The spur rack 11 is driven by the positive and negative rotation of the gear 14 to move the spur rack 11 away from or close to the beam axis 4, thereby driving the right slider 7 to move away from or close to the beam axis 4. After the fulcrum position of the labor-saving support rod 2 is adjusted, the left slider 6 and the right slider 7 are both moved to adapt to the beam axis 4, thereby stabilizing the fulcrum of the labor-saving support rod 2; preferably, one end of the left slider 6 close to the beam axis 4 and the one end of the right slider 7 close to the beam axis 4 are both provided with an arc surface 20, the radius of the arc surface 20 is equal to the radius of the beam axis 4, so that the left slider 6 and the right slider 7 fit the arc surface of the beam axis 4, so that the deflection of the labor-saving support rod 2 on the beam axis 4 is more stable.

[0032] Further, if Figure 2As shown, a rectangular groove 15 and a circular hole 16 are sequentially provided on the force-saving support rod 2 in the direction close to the drive cavity 12. The two ends of the circular hole 16 are connected to the rectangular groove 15 and the drive cavity 12 respectively. The drive shaft 13 is rotatably penetrated in the circular hole 16 through a bearing. A rectangular block 17 is adapted in the rectangular groove 15. One end of the drive shaft 13 is slidably penetrated in the rectangular block 17. It should be noted that there is only linear movement freedom between the drive shaft 13 and the rectangular block 17, and no rotational freedom. A limiting groove is provided on the inner wall of the rectangular block 17, and a limiting slide is fixed on the outer wall of the drive shaft 13. The rotational freedom between the drive shaft 13 and the rectangular block 17 is limited by the adaptation of the limiting slide and the limiting groove. A spring 18 is provided in the rectangular groove 15. The spring 18 is sleeved on the drive shaft 13, and one end of the spring 18 is connected to the rectangular block 1 3, and the other end is connected to the step formed by the rectangular groove 15 and the circular hole 16. When the spring 18 is in normal state, the rectangular block 17 is partially fitted in the rectangular groove 15. A pull ring 19 is provided at one end of the rectangular block 17 away from the drive shaft 13. The rectangular block 17 is pulled outward by the pull ring 19 to disengage the rectangular block 17 from the rectangular groove 15. Then the rectangular block 17 is rotated, and the rectangular block 17 drives the drive shaft 13 to rotate, thereby driving the gear 14 to rotate, so as to drive the spur rack 11 to move and adjust the position of the right slider 7. When the adjustment is completed, the position of the right slider 7 is fine-tuned so that the rectangular block 17 corresponds to the rectangular groove 15. Under the action of the spring 18, the rectangular block 17 is partially fitted in the rectangular groove 15, thereby limiting the rotation of the rectangular block 17, and then limiting the rotation of the gear 14 to stabilize the adjustment position of the right slider 7.

[0033] In some embodiments, as Figure 1 、 Figure 4 and Figure 5The two ends of the fixed rod 22 are fixed with the bar seat 21, and the other end is slidably provided with a movable rod 23. The two ends of the crossbeam shaft 4 are respectively connected to the two movable rods 23. The two movable rods 23 move synchronously, and the crossbeam shaft 4 moves up and down through the extension and contraction of the telescopic rod to adjust the use height of the draw hook 3. It should be noted that the two telescopic rods need to be extended and contracted synchronously to prevent interference with the crossbeam shaft 4. A cavity 24 is provided in the bar seat 21, and a screw 25 is provided for rotation in the fixed rod 22. The movable rod 23 is threadedly mounted on the screw 25. One end of the screw 25 penetrates into the cavity 24 and is keyed to a first bevel gear 26. A main shaft 27 is provided for rotation in the cavity 24. Two second bevel gears 28 are keyed to the main shaft 27. The two second bevel gears 28 respectively mesh with the two first bevel gears 2 6. One end of the main shaft 27 passes through the bar seat 21 and is fixed with a turntable 29. Rotating the turntable 29 drives the main shaft 27 to rotate, and the main shaft 27 drives the two second bevel gears 28 to rotate. The engagement of the second bevel gear 28 with the first bevel gear 26 drives the two lead screws 25 to rotate synchronously, so that the movable rods 23 on the two telescopic rods move synchronously, thereby driving the crossbeam shaft 4 to move up and down to adjust the use height of the retractor 3 so that the retractor 3 can be extended into the incision to support the surgical field; it should be noted that in order to ensure that the two movable rods 23 are raised and lowered synchronously, it is necessary to note that the installation of the two second bevel gears 28 is opposite, and the two bevel gears 28 are set in the same direction, thereby driving the two lead screws 25 to rotate in the same direction to achieve a synchronous effect; secondly, the synchronous effect can also be achieved by the thread rotation direction of the lead screw 25. Specifically, when the rotation directions of the two lead screws 25 are opposite, the thread rotation directions of the two lead screws 25 are also opposite, so that the movable rods 23 on the two telescopic rods run synchronously.

[0034] To sum up, the adjustment bracket gives the retractor 3 four degrees of freedom. First, the lifting and lowering of the telescopic rod adjusts the use height of the retractor 3; second, the axial movement of the labor-saving support rod 2 along the beam axis 4 adjusts the horizontal position of the retractor 3; third, the radial movement of the labor-saving support rod 2 along the beam axis 4 adjusts the fulcrum position; fourth, the labor-saving support rod 2 rotates around the fulcrum on the beam axis 4 to drive the retractor 3 to deflect and open the surgical incision; when the position of the fulcrum is adjusted, the radial degree of freedom of the labor-saving support rod 2 is limited by the left slider 6 and the right slider 7, and the axial degree of freedom of the labor-saving support rod 2 on the beam axis 4 can be limited by a nut, that is, a thread is provided on the beam axis 4, and two nuts are threadedly connected. After the horizontal position of the labor-saving support rod 2 is adjusted, the two threads are respectively screwed to the two sides of the labor-saving support rod 2, so as to prevent the labor-saving support rod 2 from axially deviating along the beam axis 4 when in use. The nut does not need to be pressed against the labor-saving support rod 2 to avoid the nut limiting the deflection freedom of the labor-saving support rod 2.

[0035] A method for using an adjustment bracket for external expansion of a breast augmentation incision comprises the following steps:

[0036] S1, install the hook 3; the hook 3 corresponding to the internal threaded hole of the external threaded tube 30 is installed on the labor-saving support rod 2;

[0037] S2, adjust the use height of the retractor 3; by rotating the main shaft 27 drives the two second bevel gears 28 to rotate, through the second bevel gear 28 and the first bevel gear 26 engages to drive the two screws 25 to rotate synchronously, so that the two telescopic rods are synchronously extended to adjust the use height of the retractor 3;

[0038] S3, adjust the horizontal use position of the hook 3; the labor-saving support rod 2 can move along the axial direction of the beam axis 4 to adjust the use position of the hook 3 in the horizontal direction;

[0039] S4, adjust the fulcrum of the hook 3; the labor-saving support rod 2 can move along the radial direction of the beam axis 4 to adjust the deflection fulcrum of the labor-saving support rod 2, and move the left slider 6 and the right slider 7 to contact the beam axis 4 to stabilize the fulcrum position of the labor-saving support rod 2;

[0040] S5, disassembling the retractor 3; after completing the adjustment in step S4, the operation can be performed. After the operation is completed, the retractor 3 is disassembled for cleaning.

[0041] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; and it is known to those skilled in the art that the beneficial effect to be achieved by the present invention is only to achieve better beneficial effects compared with the current implementation scheme in the prior art under specific circumstances, rather than to directly achieve the best use effect in the industry.

[0042] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. An adjustment bracket for external expansion of breast augmentation incision, characterized in that: The invention comprises a bracket (1), a labor-saving support rod (2) and a draw hook (3), wherein a crossbeam shaft (4) is fixed on the bracket (1), a strip groove (5) is provided through the side wall of the labor-saving support rod (2), the crossbeam shaft (4) is movable through the strip groove (5), a left slider (6) and a right slider (7) are slidably provided in the strip groove (5), the left slider (6) and the right slider (7) are respectively located on both sides of the axis of the crossbeam shaft (4), the left slider (6) and the right slider (7) both contact the crossbeam shaft (4) to form a lever fulcrum, and the draw hook (3) is detachably installed on the crossbeam shaft (4). One end of the labor-saving support rod (2) is provided with the strip groove (5), so that the labor-saving support rod (2) can move radially along the crossbeam axis (4) to adjust the deflection fulcrum of the labor-saving support rod (2), and then the left slider (6) and the right slider (7) are moved to contact the crossbeam axis (4) to stabilize the fulcrum position of the labor-saving support rod (2), so that the labor-saving support rod (2) drives the hook (3) to deflect around the fulcrum to open the incision. When adjusting the fulcrum, the distance between the end of the hook (3) and the fulcrum is smaller than the distance between the tail of the labor-saving support rod (2) and the fulcrum, so that the power arm is larger than the resistance arm.

2. The adjusting bracket for external expansion of breast augmentation incision according to claim 1, characterized in that: The top wall and the bottom wall of the strip groove (5) are both provided with a slide groove (8), and the top and the bottom of the left slider (6) and the top and the bottom of the right slider (7) are both fixed with a slide bar (9), and the slide bar (9) is adapted to fit in the slide groove (8).

3. The adjusting bracket for external expansion of breast augmentation incision according to claim 2, characterized in that: The right slider (7) is located between the left slider (6) and the draw hook (3), and the end of the labor-saving support rod (2) away from the draw hook (3) is threadedly connected to a screw rod (10), and the tail of the screw rod (10) penetrates into the strip groove (5) and is rotatably connected to the left slider (6).

4. The adjusting bracket for external expansion of breast augmentation incision according to claim 3, characterized in that: A straight rack (11) is slidably provided on one end of the labor-saving support rod (2) away from the screw rod (10), and the straight rack (11) is inserted into the strip groove (5) and fixedly connected to the right slider (7). A driving chamber (12) is provided in the labor-saving support rod (2), and a driving shaft (13) is rotatably provided in the driving chamber (12). A gear (14) is keyed to the driving shaft (13), and the gear (14) is meshed with the straight rack (11).

5. The adjusting bracket for external expansion of breast augmentation incision according to claim 4, characterized in that: A rectangular groove (15) and a circular hole (16) are sequentially provided on the force-saving support rod (2) in a direction close to the driving cavity (12), and the two ends of the circular hole (16) are connected to the rectangular groove (15) and the driving cavity (12) respectively. The driving shaft (13) is rotatably arranged in the circular hole (16) through a bearing, and a rectangular block (17) is adapted in the rectangular groove (15). One end of the driving shaft (13) is slidably arranged in the rectangular block (17), and a spring (18) is provided in the rectangular groove (15). The spring (18) is sleeved on the driving shaft (13), one end of the spring (18) is connected to the rectangular block (17), and the other end is connected to a step formed by the rectangular groove (15) and the circular hole (16). When the spring (18) is in a normal state, the rectangular block (17) is partially adapted in the rectangular groove (15), and a pull ring (19) is provided at one end of the rectangular block (17) away from the driving shaft (13).

6. The adjusting bracket for external expansion of breast augmentation incision according to claim 5, characterized in that: An end of the left slider (6) close to the beam axis (4) and an end of the right slider (7) close to the beam axis (4) are both provided with an arc surface (20), and the radius of the arc surface (20) is equal to the radius of the beam axis (4).

7. The adjusting bracket for external expansion of breast augmentation incision according to claim 6, characterized in that: The bracket (1) includes a strip seat (21) and a telescopic rod. The telescopic rods are fixed to both ends of the top of the strip seat (21). The telescopic rods include a fixed rod (22) and a movable rod (23). One end of the fixed rod (22) is fixedly connected to the strip seat (21), and the other end is slidably penetrated by the movable rod (23). The two ends of the beam shaft (4) are respectively connected to the two movable rods (23), and the two movable rods (23) move synchronously.

8. The adjusting bracket for external expansion of breast augmentation incision according to claim 7, characterized in that: A cavity (24) is provided in the strip seat (21), a screw (25) is rotatably provided in the fixed rod (22), the movable rod (23) is threadedly mounted on the screw (25), one end of the screw (25) penetrates into the cavity (24) and is keyed to a first bevel gear (26), a main shaft (27) is rotatably provided in the cavity (24), two second bevel gears (28) are keyed to the main shaft (27), the two second bevel gears (28) respectively mesh with the two first bevel gears (26), and one end of the main shaft (27) penetrates out of the strip seat (21) and is fixed with a turntable (29).

9. The adjusting bracket for external expansion of breast augmentation incision according to claim 8, characterized in that: An external threaded tube (30) is fixed on the labor-saving support rod (2), the external threaded tube (30) is hollow, the straight rack (11) is passed through the external threaded tube (30), an internal threaded hole is opened at the tail of the draw hook (3), and the draw hook (3) is threadedly connected to the external threaded tube (30).

10. A method for using the adjustment bracket for external expansion of breast augmentation incision according to claim 8, characterized in that: The following steps are involved: S1, installing the draw hook (3); installing the internal threaded hole of the draw hook (3) corresponding to the external threaded tube (30) on the labor-saving support rod (2); S2, adjusting the use height of the draw hook (3); by rotating the main shaft (27), the two second bevel gears (28) are driven to rotate, and the two lead screws (25) are driven to rotate synchronously through the engagement of the second bevel gears (28) with the first bevel gear (26), so that the two telescopic rods are synchronously extended and retracted to adjust the use height of the draw hook (3); S3, adjusting the horizontal use position of the draw hook (3); the labor-saving support rod (2) can be moved along the axial direction of the beam axis (4) to adjust the use position of the draw hook (3) in the horizontal direction; S4. Adjust the fulcrum of the draw hook (3); the labor-saving support rod (2) can move along the radial direction of the beam axis (4) to adjust the deflection fulcrum of the labor-saving support rod (2), and move the left slider (6) and the right slider (7) to contact the beam axis (4) to stabilize the fulcrum position of the labor-saving support rod (2).

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