Tractor for hepatobiliary surgery

Abstract

The invention belongs to the technical field of surgical equipment, and particularly relates to a hepatobiliary surgery retractor which comprises a movable frame, and a traction device is arranged on the movable frame. The traction device comprises a rotating cavity connected with the moving frame, a traction structure is rotationally connected to the rotating cavity, and a fine adjustment structure for finely adjusting the height of the traction structure is further arranged on the rotating cavity; the traction structure comprises a first U-shaped frame connected with the rotating cavity in a sliding and rotating mode, and guide blocks are fixedly connected to the two ends of the first U-shaped frame. Second U-shaped frames moving synchronously are connected to the pair of guide blocks in a sliding mode, and square cylinders are connected to the pair of second U-shaped frames in a sliding mode. Vertical blocks are vertically connected to the pair of square cylinders, traction frames are rotationally connected to the vertical blocks, and the traction frames slide along the second U-shaped frame along with the square cylinders and synchronously rotate along the vertical blocks; traction hooks are fixedly connected to the pair of traction frames, and the traction hooks on the pair of traction frames are arranged in a staggered mode; the invention provides a hepatobiliary surgery retractor capable of adjusting the angle of a drag hook.

Description

Technical Field

[0001] The present invention belongs to the technical field of surgical equipment, and particularly relates to a liver and gallbladder surgery retractor. Background Art

[0002] The liver and gallbladder are mainly located in the upper right abdomen of the human body. They are intraperitoneal organs, with functions of biotransformation and detoxification, and are of great significance for regulating human metabolism. Most of the liver is located below the sternum, and a small part of the liver directly touches the abdominal wall. The upper part of the liver is the diaphragm. The liver is divided into left and right lobes. The left lobe is connected to the heart, and the right lobe is connected to the lungs. The gallbladder is located in the right hypochondrium, in the depression below the right lobe of the liver, which is called the gallbladder fossa in medicine. The gallbladder has the function of storing and discharging bile.

[0003] Clinically, during the operation on patients, open cavity surgery is mostly adopted. To facilitate the operation of medical staff and open the surgical operation field of view, after opening the cavity, it is necessary to pull open the epidermal tissue or other tissues of the cavity. Generally, several medical assistants cooperate to open the human chest cavity for convenient surgical operation. However, during the operation, it is not only time-consuming and laborious, but also the surgical operation field of view and the operation area are small, which is not conducive to the operation of medical staff. Therefore, corresponding retractors are mostly used to assist medical staff in pulling the skin.

[0004] For example, the invention patent with the authorization announcement number: CN109589148B discloses a surgical assistance device for hepatobiliary surgery in the field of medical equipment, including an operating bed. The bottom plate of the operating bed is rotatably connected with a pedal. A spring is fixedly arranged on the lower side of the front end of the pedal. The rear end of the pedal is rotatably connected with a first shaft rod. The rod end of the first shaft rod is rotatably connected with a concave shaft rod. A first gear is fixedly arranged on the outer wall of one end of the concave shaft rod. A speed change gear is meshed outside the first gear. A second shaft rod is fixedly arranged at the center of the speed change gear. A circular baffle is fixedly arranged on the outer wall of the right side rod of the second shaft rod. A second gear is meshed outside the speed change gear. The present invention not only has a simple structure, but also only one surgeon can continuously open the human chest cavity. The doctor can perform the operation with both hands, which is convenient for operation, improves the surgical efficiency, reduces the surgical time, thereby reducing the pressure borne by the patient, and also reduces the participation of some medical staff. At the same time, it avoids the numbness of the arm caused by manually pulling open the chest cavity for a long time and reduces the work difficulty of medical staff.

[0005] When this surgical assistance device is in use, the following technical problems exist: when the retractor is in use, the angle between the retractor and the movable plate and the rack plate cannot be adjusted. Moreover, due to the different skin elasticity of each patient, when the retractor pulls the patient's skin, it often cannot reach a large pulling area, resulting in a small surgical operation field of view and operation area that medical staff can obtain, which greatly affects the operation of medical staff. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a hepatobiliary surgery retractor capable of adjusting the retractor angle.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A hepatobiliary surgery retractor includes a moving frame, and a retracting device is provided on the moving frame; the retracting device includes a rotating cavity connected to the moving frame, a retracting structure is rotatably connected to the rotating cavity, and a fine-tuning structure for finely adjusting the height of the retracting structure is further provided on the rotating cavity; the retracting structure includes a first U-shaped frame slidably and rotatably connected to the rotating cavity, and guide blocks are fixedly connected to both ends of the first U-shaped frame; a second U-shaped frame moving synchronously is slidably connected to each of the pair of guide blocks, and a square tube is slidably connected to each of the pair of second U-shaped frames; vertical blocks are vertically connected to each of the pair of square tubes, a retracting frame is rotatably connected to the vertical block, and the retracting frame rotates synchronously along the vertical block as the square tube slides along the second U-shaped frame; retracting hooks are fixedly connected to each of the pair of retracting frames, and the retracting hooks on the pair of retracting frames are arranged in a staggered manner.

[0008] Further, the moving frame includes a moving plate, and moving wheels with foot brakes are provided on the moving plate; a pair of height-adjusting sliding cylinders are fixedly connected to the moving plate, and a connecting structure is slidably connected to the height-adjusting sliding cylinders; height-adjusting sliding rods are slidably connected to each of the pair of height-adjusting sliding cylinders, and fastening screws cooperating with the height-adjusting sliding rods are screwed on the height-adjusting sliding cylinders; horizontal adjusting sliding cylinders are vertically connected to each of the pair of height-adjusting sliding rods, and a connecting block connecting to the other horizontal adjusting sliding cylinder is provided on one of the horizontal adjusting sliding cylinders; a horizontal adjusting sliding rod is slidably connected to the horizontal adjusting sliding cylinder, and a fastening screw cooperating with the horizontal adjusting sliding rod is provided on the horizontal adjusting sliding cylinder.

[0009] Further, the connecting structure includes an adjusting block slidably connected to the height-adjusting sliding cylinder, and a fastening screw cooperating with the height-adjusting sliding cylinder is screwed on the adjusting block; a baffle is connected to the adjusting block, a pressing plate is fixedly connected to one end of the baffle away from the moving wheel; a support plate is fixedly connected to the other end of the baffle, and a fixing screw rod is screwed on the support plate; a fixing plate is rotatably connected to one end of the fixing screw rod close to the pressing plate, and a knob is fixedly connected to the other end of the fixing screw rod.

[0010] Further, a worm is rotatably connected to the rotating cavity, and a knob is connected to the worm; a worm gear is meshed with the worm, and a spline cylinder rotatably connected to the rotating cavity is fixedly connected to the worm gear; a spline is slidably connected to the spline cylinder, and the spline is fixedly connected to the first U-shaped frame.

[0011] Further, the fine-tuning structure includes a support frame fixedly connected to the rotating cavity, and an adjusting screw rod is rotatably connected to the support frame; a slider slidably connected to the support frame is screwed on the adjusting screw rod, and the spline is rotatably connected to the slider.

[0012] Further, a fixing cylinder is fixedly connected to the first U-shaped frame, and a telescopic rod is fixedly connected to the fixing cylinder; a telescopic end of the telescopic rod is fixedly connected to a synchronous rod, and a pair of synchronous blocks are slidably connected to the synchronous rod; a driving rod is rotatably connected to each of the pair of synchronous blocks, and the pair of driving rods are respectively rotatably connected to the corresponding guiding blocks; an active rod is also rotatably connected to each of the pair of synchronous blocks, and the pair of active rods are respectively rotatably connected to the corresponding second U-shaped frame.

[0013] Further, an angle lead screw is rotatably connected to the second U-shaped frame, and a knob is fixedly connected to the angle lead screw; a threaded cylinder screwed to the angle lead screw is fixedly connected to the square tube, and a scale line matched with the square tube is provided on the second U-shaped frame.

[0014] Further, a dislocation block is slidably connected to the square tube, and a pulling rod is rotatably connected to the dislocation block; a rotating rod is rotatably connected to the pulling rod, and the rotating rod is fixedly connected to the pulling frame.

[0015] Further, a dislocation rod is rotatably connected to the second U-shaped frame, a driving rod is rotatably connected to the middle of the dislocation rod, and the other end of the driving rod is rotatably connected to the square tube; a driven rod is rotatably connected to the end of the dislocation rod far away from the second U-shaped frame, and the other end of the driven rod is rotatably connected to the dislocation block.

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

[0017] 1. When the present invention is in use, according to the condition of the patient, the inclination angle of the pulling hook is adjusted so that the pulling hook can adapt to the skin of the patient to the greatest extent and provide the largest view for medical staff, improving the convenience of the present application; during the adjustment, the square tube slides along the second U-shaped frame, and at the same time, the pulling frame drives the pulling hook to rotate along the vertical block; through the synchronous movement of the square tube and the pulling hook, the initial state of the pulling hook is always the same, improving the convenience of the operation of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 in the present invention Figure 1 is an enlarged schematic view of area A;

[0020] Figure 3 is a schematic view of the cooperation state of the fine adjustment structure and the pulling structure in the present invention;

[0021] Figure 4 is a first axonometric view of the cooperation state of the worm gear, the worm, the pulling structure, etc. in the present invention;

[0022] Figure 5 is a second axonometric view of the cooperation state of the worm gear, the worm, the pulling structure, etc. in the present invention;

[0023] Figure 6 The first axonometric drawing of the cooperation state of the pulling component and the second U-shaped frame in the present invention;

[0024] Figure 7 The second axonometric drawing of the cooperation state of the pulling component and the second U-shaped frame in the present invention;

[0025] In the figure: 1, moving wheel; 2, moving plate; 3, height-adjusting sliding cylinder; 4, height-adjusting sliding rod; 5, connecting block; 6, horizontal-adjusting sliding cylinder; 7, horizontal-adjusting sliding rod; 8, fine-tuning structure; 9, pulling structure; 10, adjusting block; 11, pressing plate; 12, baffle; 13, fixing plate; 14, support plate; 15, fixing screw rod; 16, rotating cavity; 17, support frame; 18, adjusting screw rod; 19, slider; 20, spline; 21, telescopic rod; 22, fixing cylinder; 23, first U-shaped frame; 24, second U-shaped frame; 25, pulling component; 26, spline cylinder; 27, worm gear; 28, worm; 29, synchronizing rod; 30, synchronizing block; 31, movable rod; 32, driving rod; 33, guiding block; 34, offset rod; 35, driven rod; 36, driving rod; 37, angle screw rod; 38, scale line; 39, threaded cylinder; 40, square cylinder; 41, pulling rod; 42, rotating rod; 43, pulling frame; 44, pulling hook; 45, vertical block. Detailed implementation manners

[0026] A liver and gallbladder surgery retractor, as Figures 1-7 shown, includes a moving frame, and a retracting device is provided on the moving frame; the retracting device includes a rotating cavity 16 connected to the moving frame, a pulling structure 9 is rotatably connected to the rotating cavity 16, and a fine-tuning structure 8 for finely adjusting the height of the pulling structure 9 is further provided on the rotating cavity 16; the pulling structure 9 includes a first U-shaped frame 23 slidably and rotatably connected to the rotating cavity 16, and guiding blocks 33 are fixedly connected to both ends of the first U-shaped frame 23; a second U-shaped frame 24 that moves synchronously is slidably connected to each of the pair of guiding blocks 33, and a pair of pulling components 25 are provided on each of the pair of second U-shaped frames 24; each of the pair of pulling components 25 includes a square cylinder 40 slidably connected to the second U-shaped frame 24, a vertical block 45 is vertically connected to each of the pair of square cylinders 40, a pulling frame 43 is rotatably connected to the vertical block 45, and the pulling frame 43 rotates synchronously along the vertical block 45 as the square cylinder 40 slides along the second U-shaped frame 24; pulling hooks 44 are fixedly connected to each of the pair of pulling frames 43, and the pulling hooks 44 on the pair of pulling frames 43 are arranged in a staggered manner.

[0027] When the present invention is in use, the application is moved to the corresponding operating table position through the moving frame, and the incision of the patient is pulled by the pulling device to assist medical staff in performing surgery on the patient. When the pulling device is in use, the direction of the pulling hook 44 is adjusted according to the direction of the patient's incision, so that the pulling structure 9 rotates along the rotating cavity 16, so that the direction of the pulling hook 44 corresponds to the direction of the patient's incision, improving the accuracy of the application. In addition, according to the patient's condition, the inclination angle of the pulling hook 44 is adjusted, so that the pulling hook 44 can adapt to the patient's skin to the greatest extent and provide the largest field of view for medical staff, improving the convenience of the application. During adjustment, the square tube 40 slides along the second U-shaped frame 24. At the same time, the pulling frame 43 drives the pulling hook 44 to rotate along the vertical block 45. Through the synchronous movement of the square tube 40 and the pulling hook 44, the initial state of the pulling hook 44 is always the same, improving the convenience of operation of the application. After the adjustment is completed, the pulling hook 44 corresponds to the patient's incision, and the pulling hook 44 is moved in place through the fine adjustment structure 8. A pair of second U-shaped frames 24 slide synchronously along a pair of guide blocks 33. The second U-shaped frame 24 drives the pulling hook 44 to move through the square tube 40, the vertical block 45, and the pulling frame 43. The pulling hook 44 pulls the skin to open the surgical field of view, facilitating the medical staff to perform surgery.

[0028] Further, as Figure 1 shown, the moving frame includes a moving plate 2, and a moving wheel 1 with a foot brake is arranged on the moving plate 2; a pair of height adjustment sliding cylinders 3 are fixedly connected to the moving plate 2, and a connection structure is slidably connected to the height adjustment sliding cylinders 3; a pair of height adjustment sliding rods 4 are slidably connected to both of the height adjustment sliding cylinders 3, and a fastening screw matched with the height adjustment sliding rod 4 is screwed on the height adjustment sliding cylinder 3; a horizontal adjustment sliding cylinder 6 is vertically connected to both of the pair of height adjustment sliding rods 4, and a connection block 5 connected to the other horizontal adjustment sliding cylinder 6 is arranged on one of the horizontal adjustment sliding cylinders 6; a horizontal adjustment sliding rod 7 is slidably connected to the horizontal adjustment sliding cylinder 6, and a fastening screw matched with the horizontal adjustment sliding rod 7 is arranged on the horizontal adjustment sliding cylinder 6.

[0029] When the moving frame is in use, through the cooperation of the moving plate 2 and the moving wheel 1, it is convenient to move the application to the corresponding position, improving the convenience of the application. In addition, through the cooperation of the height adjustment sliding cylinder 3 and the height adjustment sliding rod 4, the height of the application is adjusted; through the cooperation of the horizontal adjustment sliding cylinder 6 and the horizontal adjustment sliding rod 7, the horizontal position of the application is adjusted. In summary, through the cooperation of the moving plate 2 and the moving wheel 1, the height adjustment sliding cylinder 3 and the height adjustment sliding rod 4, and the horizontal adjustment sliding cylinder 6 and the horizontal adjustment sliding rod 7, it is convenient to adjust the three-dimensional position of the pulling device of the application, improving the convenience of the application.

[0030] Further, as Figure 2As shown in the figure, the connection structure includes an adjustment block 10 that is slidably connected to the height adjustment sliding cylinder 3. A fastening screw that cooperates with the height adjustment sliding cylinder 3 is screwed onto the adjustment block 10. A baffle 12 is rotatably connected to the adjustment block 10. A pressing plate 11 is fixedly connected to one end of the baffle 12 away from the moving wheel 1. Another end of the baffle 12 is fixedly connected to a support plate 14. A fixing screw rod 15 is screwed onto the support plate 14. One end of the fixing screw rod 15 close to the pressing plate 11 is rotatably connected to a fixing plate 13, and a knob is fixedly connected to the other end of the fixing screw rod 15.

[0031] When the connection structure is in use, according to the height of the operating bed, the adjustment block 10 is slid along the height adjustment sliding cylinder 3, and the pressing plate 11 is placed on the upper surface of the operating bed. The knob is rotated, and the knob drives the fixing screw rod 15 to rotate along the support plate 14. The fixing screw rod 15 drives the fixing plate 13 to contact the lower surface of the operating bed. The present application is fixed on the operating bed through the cooperation of the fixing plate 13 and the pressing plate 11. Through the baffle 12 being rotatably connected to the adjustment block 10, the pressing plate 11, the fixing plate 13, etc. can adapt to the angle of the operating bed to improve the adaptability of the present application.

[0032] Further, as Figure 4 shown in the figure, a worm 28 is rotatably connected to the rotating cavity 16, and a knob is connected to the worm 28. A worm gear 27 is engaged with the worm 28, and a spline cylinder 26 that is rotatably connected to the rotating cavity 16 is fixedly connected to the worm gear 27. A spline 20 is slidably connected to the spline cylinder 26, and the spline 20 is fixedly connected to the first U-shaped frame 23.

[0033] When the pulling structure 9 rotates, the knob drives the worm 28 to rotate, and the worm 28 drives the worm gear 27 to rotate. The worm gear 27 drives the spline 20 to rotate through the spline cylinder 26. The spline 20 drives the first U-shaped frame 23 to rotate, and the first U-shaped frame 23 drives the pulling structure 9 to rotate so that the direction of the pulling hook 44 corresponds to the direction of the patient's incision. Through the cooperation of the worm 28 and the worm gear 27, the stability of the spline cylinder 26 is improved, that is, the stability of the pulling structure 9 is improved.

[0034] Further, as Figure 3 shown in the figure, the fine adjustment structure 8 includes a support frame 17 fixedly connected to the rotating cavity 16. An adjustment screw rod 18 is rotatably connected to the support frame 17, and a knob is provided on the adjustment screw rod 18. A slider 19 that is slidably connected to the support frame 17 is screwed onto the adjustment screw rod 18, and the spline 20 is rotatably connected to the slider 19.

[0035] When the fine adjustment structure 8 is in use, the knob drives the adjustment screw rod 18 to rotate. The adjustment screw rod 18 drives the slider 19 to slide along the support frame 17. The slider 19 drives the spline 20 to slide along the spline cylinder 26. The spline 20 drives the pulling structure 9 to move up and down. The height of the pulling structure 9 is finely adjusted to improve the convenience of operation of the present application.

[0036] Further, as Figure 4 and Figure 5 shown, a fixed cylinder 22 is fixedly connected to the first U-shaped frame 23, a telescopic rod 21 is fixedly connected to the fixed cylinder 22, and the telescopic rod 21 is preferably an electric telescopic rod 21; a synchronous rod 29 is fixedly connected to the telescopic end of the telescopic rod 21, and a pair of synchronous blocks 30 are slidably connected to the synchronous rod 29; a driving rod 32 is rotatably connected to each of the pair of synchronous blocks 30, and the pair of driving rods 32 are respectively rotatably connected to the corresponding guiding blocks 33; a movable rod 31 is also rotatably connected to each of the pair of synchronous blocks 30, and the pair of movable rods 31 are respectively rotatably connected to the corresponding second U-shaped frames 24.

[0037] When the pulling structure 9 is in use, the telescopic rod 21 extends, the telescopic rod 21 drives the synchronous rod 29 to move, and the synchronous rod 29 drives a pair of synchronous blocks 30 to move; the synchronous blocks 30 drive the driving rods 32 to rotate along the guiding blocks 33, and at this time, the synchronous blocks 30 slide along the synchronous rod 29; under the action of the synchronous blocks 30, the movable rod 31 drives the second U-shaped frame 24 to slide along the guiding blocks 33; through the arrangement of the synchronous rod 29, the pair of second U-shaped frames 24 slide synchronously along the guiding blocks 33, improving the synchronism of the movement of the pair of pulling hooks 44 in this application.

[0038] Further, as Figure 6 shown, an angle lead screw 37 is rotatably connected to the second U-shaped frame 24, and a knob is fixedly connected to the angle lead screw 37; a threaded cylinder 39 screwed with the angle lead screw 37 is fixedly connected to the square cylinder 40, and a scale line 38 matched with the square cylinder 40 is provided on the second U-shaped frame 24.

[0039] When the square cylinder 40 moves, the angle lead screw 37 is driven to rotate by the knob, and the angle lead screw 37 cooperates with the threaded cylinder 39 to drive the square cylinder 40 to slide along the second U-shaped frame 24; through the arrangement of the scale line 38, the moving distance of the square cylinder 40 can be accurately known.

[0040] Further, as Figure 7 shown, a misalignment block is slidably connected to the square cylinder 40, and a pulling rod 41 is rotatably connected to the misalignment block; a rotating rod 42 is rotatably connected to the pulling rod 41, and the rotating rod 42 is fixedly connected to the pulling frame 43; a misalignment rod 34 is rotatably connected to the second U-shaped frame 24, a driving rod 36 is rotatably connected to the middle of the misalignment rod 34, and the other end of the driving rod 36 is rotatably connected to the square cylinder 40; a driven rod 35 is rotatably connected to the end of the misalignment rod 34 away from the second U-shaped frame 24, and the other end of the driven rod 35 is rotatably connected to the misalignment block.

[0041] When the square tube 40 moves, the square tube 40 drives the misaligned rod 34 to rotate through the active rod 36. The misaligned rod 34 drives the misaligned block to slide along the square tube 40 through the driven rod 35. The misaligned block drives the rotating rod 42 to move through the pulling rod 41, and the rotating rod 42 drives the pulling frame 43 to rotate along the vertical block 45. That is, the pulling frame 43, the vertical block 45, etc. move with the linear movement of the square tube 40. Under the action of the misaligned rod 34, since the driven rod 35 is rotatably connected to the end of the misaligned rod 34 far from the second U-shaped frame 24, and the active rod 36 is rotatably connected to the middle of the misaligned rod 34, the movement speed of the misaligned block is greater than the movement speed of the square tube 40, so that the misaligned block slides along the square tube 40, and further the pulling frame 43 rotates along the vertical block 45, so that the pulling frame 43 and the pulling hook 44 rotate while moving linearly, making the initial state of the pulling hook 44 always the same, and improving the convenience of the operation of this application.

[0042] The working process of the present invention is as follows:

[0043] When the present invention is in use, through the cooperation of the moving plate 2 and the moving wheel 1, the present application is moved to the corresponding position; through the cooperation of the height adjustment sliding cylinder 3 and the height adjustment sliding rod 4, the height of the present application is adjusted; through the cooperation of the horizontal adjustment sliding cylinder 6 and the horizontal adjustment sliding rod 7, the horizontal position of the present application is adjusted; according to the height of the operating table, the adjusting block 10 slides along the height adjustment sliding cylinder 3, and the pressing plate 11 is placed on the upper surface of the operating table; the knob is rotated, the knob drives the fixed screw rod 15 to rotate along the support plate 14, and the fixed screw rod 15 drives the fixed plate 13 to contact the lower surface of the operating table, and the present application is fixed on the operating table through the cooperation of the fixed plate 13 and the pressing plate 11.

[0044] The knob drives the worm 28 to rotate, and the worm 28 drives the worm wheel 27 to rotate; the worm wheel 27 drives the spline 20 to rotate through the spline cylinder 26, the spline 20 drives the first U-shaped frame 23 to rotate, and the first U-shaped frame 23 drives the pulling structure 9 to rotate, so that the direction of the pulling hook 44 corresponds to the direction of the patient's incision; according to the patient's condition, the inclination angle of the pulling hook 44 is adjusted, so that the pulling hook 44 can adapt to the patient's skin to the greatest extent and provide the largest field of view for medical staff.

[0045] During adjustment, the angle lead screw 37 is rotated by the knob. The angle lead screw 37 cooperates with the threaded barrel 39 to drive the square barrel 40 to slide along the second U-shaped frame 24. The pulling frame 43, the pulling hook 44, the vertical block 45, etc. move along with the linear movement of the square barrel 40. At the same time, the square barrel 40 drives the misaligned rod 34 to rotate through the driving rod 36, and the misaligned rod 34 drives the misaligned block to slide along the square barrel 40 through the driven rod 35. The misaligned block drives the rotating rod 42 to move through the pulling rod 41, and the rotating rod 42 drives the pulling frame 43 to rotate along the vertical block 45. The adjustment lead screw 18 is rotated by the knob, the adjustment lead screw 18 drives the slider 19 to slide along the support frame 17, the slider 19 drives the spline 20 to slide along the spline barrel 26, and the spline 20 drives the pulling structure 9 to move up and down, so that the pulling hook 44 is moved into place.

[0046] The telescopic rod 21 extends, the telescopic rod 21 drives the synchronous rod 29 to move, and the synchronous rod 29 drives a pair of synchronous blocks 30 to move. The synchronous blocks 30 drive the driving rod 32 to rotate along the guide block 33. At this time, the synchronous blocks 30 slide along the synchronous rod 29. Under the action of the synchronous blocks 30, the movable rod 31 drives the second U-shaped frame 24 to slide along the guide block 33. Through the setting of the synchronous rod 29, a pair of second U-shaped frames 24 slide synchronously along the guide block 33. The second U-shaped frame 24 drives the pulling hook 44 to move through the square barrel 40, the vertical block 45, and the pulling frame 43. The pulling hook 44 pulls the skin, opening the surgical field of view and facilitating the medical staff to perform the operation.

Claims

1. A liver and gallbladder surgery retractor, comprising a movable frame, and a retraction device is provided on the movable frame; characterized in that: The pulling device includes a rotating cavity (16) connected to the moving frame. A pulling structure (9) is rotatably connected to the rotating cavity (16), and a fine-tuning structure (8) for finely adjusting the height of the pulling structure (9) is also provided on the rotating cavity (16). The pulling structure (9) includes a first U-shaped frame (23) slidably and rotatably connected to the rotating cavity (16), and guide blocks (33) are fixedly connected to both ends of the first U-shaped frame (23). A second U-shaped frame (24) that moves synchronously is slidably connected to each of the pair of guide blocks (33), and a square tube (40) is slidably connected to each of the pair of second U-shaped frames (24). Vertical blocks (45) are vertically connected to each of the pair of square tubes (40), and a pulling frame (43) is rotatably connected to the vertical block (45). The pulling frame (43) rotates synchronously along the vertical block (45) as the square tube (40) slides along the second U-shaped frame (24). Pulling hooks (44) are fixedly connected to each of the pair of pulling frames (43), and the pulling hooks (44) on the pair of pulling frames (43) are arranged in a staggered manner.

2. The liver and gallbladder surgery retractor according to claim 1, characterized in that: The moving frame includes a moving plate (2) provided with moving wheels (1) with foot brakes on the moving plate (2). A pair of height-adjusting sliding cylinders (3) are fixedly connected to the moving plate (2), and a connecting structure is slidably connected to the height-adjusting sliding cylinders (3). A height-adjusting sliding rod (4) is slidably connected to each of the pair of height-adjusting sliding cylinders (3), and a fastening screw cooperating with the height-adjusting sliding rod (4) is screwed onto the height-adjusting sliding cylinder (3). Horizontal adjusting sliding cylinders (6) are vertically connected to each of the pair of height-adjusting sliding rods (4), and a connecting block (5) for connecting to the other horizontal adjusting sliding cylinder (6) is provided on one of the horizontal adjusting sliding cylinders (6). A horizontal adjusting sliding rod (7) is slidably connected to the horizontal adjusting sliding cylinder (6), and a fastening screw cooperating with the horizontal adjusting sliding rod (7) is provided on the horizontal adjusting sliding cylinder (6).

3. The liver and gallbladder surgery retractor according to claim 2, characterized in that: The connecting structure includes an adjusting block (10) slidably connected to the height-adjusting sliding cylinder (3), and a fastening screw cooperating with the height-adjusting sliding cylinder (3) is screwed onto the adjusting block (10). A baffle (12) is connected to the adjusting block (10), and a pressing plate (11) is fixedly connected to the end of the baffle (12) away from the moving wheel (1). A support plate (14) is fixedly connected to the other end of the baffle (12), and a fixing screw rod (15) is screwed onto the support plate (14). A fixing plate (13) is rotatably connected to the end of the fixing screw rod (15) close to the pressing plate (11), and a knob is fixedly connected to the other end of the fixing screw rod (15).

4. The hepatobiliary surgery retractor according to claim 1, wherein: A worm (28) is rotatably connected to the rotating cavity (16), and a knob is connected to the worm (28). A worm gear (27) is meshed with the worm (28), and a spline cylinder (26) rotatably connected to the rotating cavity (16) is fixedly connected to the worm gear (27). A spline (20) is slidably connected to the spline cylinder (26), and the spline (20) is fixedly connected to the first U-shaped frame (23).

5. The liver and gallbladder surgery retractor according to claim 4, characterized in that: The fine-tuning structure (8) includes a support frame (17) fixedly connected to the rotation cavity (16), and an adjustment screw rod (18) is rotatably connected to the support frame (17); a slider (19) that is threadedly connected to the adjustment screw rod (18) and slidably connected to the support frame (17) is provided, and a spline (20) is rotatably connected to the slider (19).

6. The liver and gallbladder surgery retractor according to any one of claims 1 or 5, characterized in that: A fixed cylinder (22) is fixedly connected to the first U-shaped frame (23), and a telescopic rod (21) is fixedly connected to the fixed cylinder (22); the telescopic end of the telescopic rod (21) is fixedly connected to a synchronizing rod (29), and a pair of synchronizing blocks (30) are slidably connected to the synchronizing rod (29); a driving rod (32) is rotatably connected to each of the pair of synchronizing blocks (30), and the pair of driving rods (32) are respectively rotatably connected to the corresponding guiding blocks (33); a movable rod (31) is also rotatably connected to each of the pair of synchronizing blocks (30), and the pair of movable rods (31) are respectively rotatably connected to the corresponding second U-shaped frames (24).

7. The liver and gallbladder surgery retractor according to claim 6, wherein: An angle screw rod (37) is rotatably connected to the second U-shaped frame (24), and a knob is fixedly connected to the angle screw rod (37); a threaded cylinder (39) that is threadedly connected to the angle screw rod (37) is fixedly connected to the square cylinder (40), and a scale line (38) that is matched with the square cylinder (40) is provided on the second U-shaped frame (24).

8. The liver and gallbladder surgery retractor according to claim 7, characterized in that: A misalignment block is slidably connected to the square cylinder (40), and a pulling rod (41) is rotatably connected to the misalignment block; a rotating rod (42) is rotatably connected to the pulling rod (41), and the rotating rod (42) is fixedly connected to a pulling frame (43).

9. The liver and gallbladder surgery retractor according to claim 8, characterized in that: A misalignment rod (34) is rotatably connected to the second U-shaped frame (24), a driving rod (36) is rotatably connected to the middle of the misalignment rod (34), and the other end of the driving rod (36) is rotatably connected to the square cylinder (40); a driven rod (35) is rotatably connected to the end of the misalignment rod (34) away from the second U-shaped frame (24), and the other end of the driven rod (35) is rotatably connected to the misalignment block.

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