A surgical retractor

Abstract

The present invention relates to a surgical retractor, comprising a carrier frame and a retractor; the carrier frame comprises a left carrier frame and a right carrier frame that are symmetrical on both sides, the left carrier frame comprises a carrier rod and an adjusting member, the carrier rod is provided with a plurality of adjusting members, the adjusting member comprises an adjusting plate, a guide cylinder and a connecting plate, a retractor is passed through the lower portion of the adjusting plate, one end of the hook body of the retractor is located on the inner side of the carrier rod, one end of the hook handle of the retractor passes through a first through hole and the adjusting plate and extends outward from the carrier rod, and the connecting plate is in a sliding state along one end of the hook handle of the retractor; both ends of the left carrier rod and both ends of the right carrier rod are connected via a connecting member. The present invention is to solve the problem that existing surgical retractors require multiple medical staff to operate, occupy more space, and thus affect the operation of the surgeon and increase the fatigue of the medical staff. A surgical retractor is provided that can provide more space for the surgeon and reduce the fatigue of the medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a surgical retractor. Background Art

[0002] Surgery is an important treatment method for thyroid disease. Surgical treatment of thyroid disease requires making an incision in the skin at the patient's neck so that the patient's thyroid can be seen by the doctor. However, due to the elasticity of the skin, a retractor is needed to pull the skin at the surgical incision outward. The pulled skin can give the doctor a large enough surgical field of view. In order to completely expose the patient's thyroid affected area, multiple surgical retractors are needed to pull the skin. Therefore, multiple medical staff are needed to operate the retractors. Multiple medical staff will take up more space and affect the surgeon's operation. Due to the long operation time and the high elasticity of human skin, medical staff often need to use a lot of force for a long time to operate the retractor, and the medical staff are very tired.

[0003] "Laparoscopic Thyroid Surgery Retractor" with publication number CN104013445B discloses a retractor for thyroid surgery, but the support bar of the invention is still located above the thyroid gland and is only suitable for use in laparoscopic surgery, because the two crossed support bars not only affect the surgical field of view, but also affect the surgical operation, and the surgical field of view cannot be adjusted according to actual conditions. Summary of the Invention

[0004] The present invention aims to solve the problem that existing surgical retractors require multiple medical staff to operate, occupy more space, and thus affect the operation of the surgeon and increase the fatigue of the medical staff. A surgical retractor is provided, which can provide more space for the surgeon and reduce the fatigue of the medical staff.

[0005] In order to solve the above problems, the technical solution of the present invention is:

[0006] A surgical retractor comprises a carrier frame and a retractor;

[0007] The carrier frame includes a left carrier frame and a right carrier frame that are symmetrical on both sides. The left carrier frame includes a carrier rod and an adjusting member. A first through hole is provided in the carrier rod that passes through the inner and outer sides of the carrier rod. A second through hole is provided on the top surface of the carrier rod that is connected to the first through hole. A plurality of adjusting members are provided on the carrier rod. The adjusting members include an adjusting plate, a guide cylinder and a connecting plate. The adjusting plate is slidably arranged in the first through hole. A limiting member extending out of the second through hole is provided on the upper end of the adjusting plate. One end of the guide cylinder opening is connected to the outer side of the adjusting plate through the first through hole. The periphery of the guide cylinder An upper sliding hole and a lower sliding hole are respectively provided at the upper and lower ends of the wall, a movable plate is slidably provided in the guide cylinder, a bellows is connected between the opposite sides of the movable plate and the adjusting plate, the connecting plate is sleeved on the guide cylinder outside the load-bearing rod through the through-hole provided on the upper part, the upper and lower ends of the movable plate are respectively fixedly connected to the through-hole through the connecting blocks passing through the upper sliding hole and the lower sliding hole, a draw hook is provided at the lower part of the adjusting plate, one end of the hook body of the draw hook is located on the inner side of the load-bearing rod, one end of the hook handle of the draw hook passes through the first through-hole and the adjusting plate and extends out of the load-bearing rod, and the connecting plate is in a sliding state along one end of the hook handle of the draw hook;

[0008] Both ends of the left-side load-bearing rod and both ends of the right-side load-bearing rod are connected via a connecting piece.

[0009] Furthermore, the bearing rod on the left side is a rod body with an arc-shaped protrusion facing left, and a plurality of protrusions are provided on the top surface of the bearing rod outside the second through hole.

[0010] Furthermore, the limiting member includes a slider, a first screw and a first nut. The upper end of the adjusting plate is connected to a slider located in the second through hole and in sliding contact with the second through hole. The top surface of the slider is connected to the first screw. The first screw is screwed with a first nut that presses on the protrusion.

[0011] Furthermore, the pull hook includes a horizontal plate and a vertical plate, the inner end of the horizontal plate is located on the inner side of the load-bearing rod and is connected to the vertical plate, constituting one end of the hook body of the pull hook, the outer end of the horizontal plate passes through the first through hole and the adjustment plate, extends to the outside of the load-bearing rod, constituting one end of the hook handle of the pull hook, the horizontal plate and the vertical plate are an integrally formed structure, the connection between the horizontal plate and the vertical plate is in a circular arc transition shape, the lower end of the vertical plate is an arc-shaped surface, a strip hole is provided on the horizontal plate, and a second screw is provided at the lower end of the connecting plate on the adjusting member where the pull hook is located, the lower end of the second screw passes through the strip hole, and is limited by the second nut under the horizontal plate.

[0012] Furthermore, a tension spring sleeved outside the bellows is provided between the bellows and the guide cylinder on each adjusting member, and two ends of the tension spring are respectively connected to the movable plate and the adjusting plate on both sides of the bellows.

[0013] Furthermore, the connecting member includes a first connecting member and a second connecting member, one end of the supporting rod is a connecting end and the other end is an adjusting end, the adjusting end of the supporting rod on the left supporting frame and the adjusting end of the supporting rod on the right supporting frame are connected via the first connecting member, and the connecting end of the supporting rod on the left supporting frame and the connecting end of the supporting rod on the right supporting frame are connected via the second connecting member.

[0014] Furthermore, the first connecting member includes a first connecting plate and a second connecting plate, the adjusting end of the load-bearing rod on the left load-bearing frame is vertically connected to the first connecting plate, and the adjusting end of the load-bearing rod on the right load-bearing frame is vertically connected to the second connecting plate, and the second connecting plate is connected to a third screw rod that passes through the first connecting plate and is limited by a third nut.

[0015] Furthermore, the second connecting member includes a third connecting plate and a fourth connecting plate. The rear portion of the connecting end of the load-bearing rod on the left load-bearing frame is vertically connected to the third connecting plate, and the front portion of the connecting end of the load-bearing rod on the right load-bearing frame is vertically connected to the fourth connecting plate. The third connecting plate and the fourth connecting plate are rotatably connected via a connecting rod, and the third screw on the first connecting member and the connecting rod on the second connecting member are coaxial.

[0016] The cam is connected to the second connecting member and the plurality of adjusting members on the carrier frame are connected one by one to the second connecting member, and the driving member includes a shell, a fourth screw, a driving rod and a water pipe, and the front and rear end openings of the shell are closed by a sealing plate, the fourth screw is located in the shell, and the front and rear end are respectively rotated to connect the sealing plates of the front and rear end of the shell, the fourth screw is threadedly connected to the outer wall and the inner wall of the shell for sliding contact, and the fourth screw is fixedly connected to the turbine on the front side of the driving plate, and a worm is meshed with the left side of the turbine, and the upper and lower ends of the worm are respectively rotatably connected to the upper and lower surfaces of the shell, the upper end of the worm is connected to the driving rod that upwardly penetrates the shell, and the upper end of the driving rod is connected to the handle. One end of the water pipe is connected to the space between the driving plate and the rear side of the shell, and the other end extends into the upper sliding hole on the corresponding adjusting member. One end of the water pipe extending into the upper sliding hole passes through the movable plate and is connected to the bellows, and a water injection hole located at the rear side of the driving plate is provided on the shell, and a hole plug is provided in the water injection hole.

[0017] Furthermore, the plurality of driving members are connected in sequence from back to front, the sealing plate at the rear of the shell on the driving member at the rear end of the plurality of driving members is fixedly connected to the fourth connecting plate, and the sealing plate at the front of the shell on the driving member at the front end of the plurality of driving members is connected to a connecting rod.

[0018] Through the above technical solution, the beneficial effects of the present invention are:

[0019] The present invention only requires one medical staff to operate, so it does not take up too much surgical space. Since the driving member of the present invention is far away from the surgical incision, the present invention can adjust the degree of skin pulling according to the situation of the operation without getting close to the surgical incision and affecting the operation of the surgeon during the operation. The present invention can be operated only by adjusting the handle on the driving member, and after the operation is completed, no other external force is needed to keep the skin pulled open, which reduces the fatigue of the medical staff; the present invention can adjust the angle between the left supporting frame and the right supporting frame, which can make the retractor pull the skin more stably and prevent the skin from slipping on the vertical plate of the retractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the connection between the bearing rod and the adjustment plate of the left bearing frame of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the connecting hook of the adjustment member of the left supporting frame of the present invention;

[0023] Figure 4 This is a cross-sectional view of the connection between the adjustment member of the left support frame of the present invention and the water pipe (the water pipe is not cut);

[0024] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle;

[0025] Figure 6 is a cross-sectional view (enlarged view) of the connecting plate connecting the draw hook on the left bearing frame of the present invention;

[0026] Figure 7 is a schematic diagram of the internal structure of the driving member of the present invention (top view);

[0027] Figure 8 yes Figure 7 Cross-sectional view at the middle BB.

[0028] The numbers in the accompanying drawings are: 1 is a connecting rod, 2 is a handle, 3 is a housing, 4 is a bearing rod, 5 is a second through hole, 6 is a water pipe, 7 is a strip hole, 8 is a first screw, 9 is a first nut, 10 is a guide cylinder, 11 is an upper sliding hole, 12 is a horizontal plate, 13 is a connecting plate, 14 is an adjusting plate, 15 is a protrusion, 16 is a second connecting plate, 17 is a third screw, 18 is a third nut, 19 is a first connecting plate, 20 is a fourth connecting plate, 21 is The third connecting plate, 22 is the hole plug, 23 is the first through hole, 24 is the through hole, 25 is the connecting block, 26 is the vertical plate, 27 is the lower sliding hole, 28 is the tension spring, 29 is the bellows, 30 is the movable plate, 31 is the second screw, 32 is the second nut, 33 is the through hole, 34 is the drive rod, 35 is the turbine, 36 is the fourth screw, 37 is the sealing plate, 38 is the drive plate, 39 is the worm, 40 is the connecting rod, and 41 is the slider. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] like Figures 1 to 8 As shown, a surgical retractor includes a carrier and a retractor;

[0031] The carrier frame includes a left carrier frame and a right carrier frame that are symmetrical on both sides. The left carrier frame includes a carrier rod 4 and an adjusting member. A first through hole 23 is provided in the carrier rod 4 along the arc direction of the carrier rod 4, which passes through the inner and outer side surfaces of the carrier rod 4. The top surface of the carrier rod 4 is provided with a second through hole 5 that is recessed downward and connected to the first through hole 23 along the arc direction of the carrier rod 4. The second through hole 5 is close to the inner side of the carrier rod 4 on one side as the inner side, and the other side as the outer side. The end of the first through hole 23 is flush with the end of the second through hole 5. , the bearing rod 4 is provided with a plurality of adjusting members, the adjusting members including an adjusting plate 14, a guide cylinder 10 and a connecting plate 13, the adjusting plate 14 is slidably arranged in the first through hole 23, the upper end of the adjusting plate 14 is provided with a limiter extending from the second through hole 5, the guide cylinder 10 is a cylinder with one end closed and the other end open, the open end of the guide cylinder 10 is connected to the outer side of the adjusting plate 14 through the first through hole 23, and is closed by the adjusting plate 14, the upper and lower ends of the peripheral wall of the guide cylinder 10 are respectively provided with a through guide cylinder 10 The upper sliding hole 11 and the lower sliding hole 27 on the inner and outer walls and spaced apart from the two ends of the guide cylinder 10 are both strip-shaped through holes arranged along the length direction of the guide cylinder 10. A movable plate 30 is provided in the guide cylinder 10 for sliding. The movable plate 30 is a circular plate body whose peripheral wall is in sliding contact with the inner wall of the guide cylinder 10. A bellows 29 is connected between the opposite sides of the movable plate 30 and the adjustment plate 14. The connecting plate 13 is sleeved on the outside of the bearing rod 4 through the through hole 33 provided on the upper part of the connecting plate 13. On the guide cylinder 10, the connecting plate 13 is a rectangular plate body, the outer wall of the guide cylinder 10 is in sliding contact with the penetration hole 33, the upper and lower ends of the movable plate 30 are respectively fixedly connected to the penetration hole 33 through the connecting block 25 passing through the upper sliding hole 11 and the lower sliding hole 27, and the lower part of the adjustment plate 14 is penetrated by a hook lower than the guide cylinder 10, one end of the hook body of the hook is located on the inner side of the load-bearing rod 4, one end of the hook handle of the hook passes through the first through hole 23 and the adjustment plate 14 and extends to the outside of the load-bearing rod 4, and the connecting plate 13 is in a sliding state along one end of the hook handle of the hook;

[0032] Both ends of the left-side load-bearing rod 4 and both ends of the right-side load-bearing rod 4 are connected via connecting pieces.

[0033] The left-side carrying rod 4 is a rod body with an arc-shaped protrusion facing leftward. The longitudinal section of the carrying rod 4 is square. A plurality of protrusions 15 are provided on the top surface of the carrying rod 4 outside the second through hole 5 .

[0034] The adjusting plate 14 is a rectangular plate bent into an arc shape. The thickness of the adjusting plate 14 is greater than the width of the second through hole 5 and smaller than the width of the first through hole 23. The upper and lower end surfaces of the adjusting plate 14 are in sliding contact with the upper and lower side walls of the first through hole 23 respectively; the limiting member includes a slider 41, a first screw 8 and a first nut 9. The upper end of the adjusting plate 14 is connected to the slider 41 located in the second through hole 5 and in sliding contact with the second through hole 5. The slider 41 is a rectangular block bent into an arc shape. The left and right side surfaces of the slider 41 are in sliding contact with the left and right side walls of the second through hole 5 respectively. The top surface of the slider 41 is flush with the top surface of the bearing rod 4. The top surface of the slider 41 is connected to the first screw 8. The first screw 8 is screwed with a first nut 9 that presses on the protrusion 15.

[0035] The draw hook includes a horizontal plate 12 and a vertical plate 26. The inner end of the horizontal plate 12 is located on the inner side of the load-bearing rod 4 and is connected to the vertical plate 26, constituting one end of the hook body of the draw hook. The outer end of the horizontal plate 12 passes through the first through hole 23 and the adjustment plate 14 and extends outward from the load-bearing rod 4, constituting one end of the hook handle of the draw hook. The adjustment plate 14 in the first through hole 23 is provided with a through hole 24 for the horizontal plate of the draw hook to pass through. The horizontal plate 12 is in sliding contact with the through hole 24. The through hole 24 is a long strip that passes through the inner and outer sides of the adjustment plate 14. shaped hole, the horizontal plate 12 and the vertical plate 26 are an integrally formed structure, the connection between the horizontal plate 12 and the vertical plate 26 is in a circular arc transition shape, the lower end of the vertical plate 26 is an arc-shaped surface, the horizontal plate 12 is provided with a strip hole 7 that passes through the upper and lower sides of the horizontal plate 12, and the strip hole 7 is arranged along the length direction of the horizontal plate 12. The lower end of the connecting plate 13 on the adjusting member where the hook is located is provided with a second screw 31. The lower end of the second screw 31 passes through the strip hole 7 and is limited to the bottom of the horizontal plate 12 by the second nut 32. The lower end of the connecting plate 13 is in contact with the horizontal plate 12.

[0036] A tension spring 28 sleeved outside the bellows 29 is provided between the bellows 29 and the guide cylinder 10 on each adjusting member. Both ends of the tension spring 28 are respectively connected to the movable plates 30 and the adjusting plate 14 on both sides of the bellows 29 .

[0037] The connecting member includes a first connecting member and a second connecting member, one end of the load-bearing rod 4 is a connecting end and the other end is an adjusting end, the adjusting end of the load-bearing rod 4 on the left load-bearing frame and the adjusting end of the load-bearing rod 4 on the right load-bearing frame are connected via the first connecting member, and the connecting end of the load-bearing rod 4 on the left load-bearing frame and the connecting end of the load-bearing rod 4 on the right load-bearing frame are connected via the second connecting member.

[0038] The first connecting member includes a first connecting plate 19 and a second connecting plate 16. The adjusting end of the load-bearing rod 4 on the left load-bearing frame is vertically connected to the first connecting plate 19, and the adjusting end of the load-bearing rod 4 on the right load-bearing frame is vertically connected to the second connecting plate 16. The second connecting plate 16 is connected to a third screw 17 that passes through the first connecting plate 19 and is limited by a third nut 18.

[0039] The second connecting member includes a third connecting plate 21 and a fourth connecting plate 20. The third connecting plate 21 is vertically connected to the rear of the connecting end of the load-bearing rod 4 on the left load-bearing frame, and the fourth connecting plate 20 is vertically connected to the front of the connecting end of the load-bearing rod 4 on the right load-bearing frame. The third connecting plate 21 and the fourth connecting plate 20 are rotatably connected via a connecting rod 40. The first connecting plate 19, the second connecting plate 16, the third connecting plate 21 and the fourth connecting plate 20 are all circular plates. The third screw 17 on the first connecting member and the connecting rod 40 on the second connecting member are coaxial.

[0040] The second connecting member is connected to a driving member corresponding to a plurality of adjusting members on the carrier, and the driving member includes a shell 3, a fourth screw 36, a driving rod 34 and a water pipe 6. The shell 3 is a cylindrical body with front and rear ends opened and a square cross section. The front and rear ends of the shell 3 are closed by a sealing plate 37. The fourth screw 36 is located in the shell, and the front and rear ends are respectively connected to the sealing plates 37 of the front and rear ends of the shell 3. The fourth screw 36 is threadedly connected to a driving plate 38 that is in sliding contact with the outer wall and the inner wall of the shell 3. The driving plate 38 A turbine 35 is fixedly connected to the fourth screw 36 on the front side, and a worm 39 is engaged with the left side of the turbine 35. The upper and lower ends of the worm 39 are rotatably connected to the upper and lower surfaces inside the shell 3 respectively. The upper end of the worm 39 is connected to the drive rod 34 that penetrates the shell 3 upward. The upper end of the drive rod 34 is connected to the handle 2. One end of the water pipe 6 is connected to the space between the drive plate 38 and the rear side of the shell 3, and the other end extends into the upper sliding hole 11 on the corresponding adjusting part. The end of the water pipe 6 extending into the upper sliding hole 11 passes through the movable plate 30 on the corresponding adjusting part and is connected to the bellows 29.

[0041] The housing 3 is provided with a water injection hole located at the rear side of the driving plate 38 , and a hole plug 22 is provided in the water injection hole.

[0042] The plurality of driving members are connected in sequence from back to front, the sealing plate 37 at the rear of the shell 3 on the driving member at the rear end of the plurality of driving members is fixedly connected to the fourth connecting plate 20, and the sealing plate 37 at the front of the shell 3 on the driving member at the front end of the plurality of driving members is connected to the connecting rod 1.

[0043] When in use, the present invention is connected to an operating table or a bracket through a connecting rod 1, so that the carrier is located above the patient's surgical site, and the handles 2 on multiple driving parts are rotated one by one to drive the driving rod 34 to rotate, and the driving rod 34 drives the worm 39 to rotate, and the worm 39 drives the turbine 35 to rotate, and the fourth screw 36 rotates with the turbine 35, so that the fourth screw 36 drives the driving plate 38 to approach the turbine 35, and water is injected into each driving part through the water injection hole. According to the need to open the thyroid surgical incision, the required number of retractors is selected, and the second nut 32 on the adjusting member corresponding to the unnecessary retractor is loosened to release the limit on the retractor, and the unnecessary retractor is moved outward under the limit of the corresponding second screw 31 until the vertical plate 26 of the retractor contacts the inner part of the supporting rod. On the side, tighten the second nut 32 again to limit the unnecessary retractors to avoid affecting the surgical field of view, and loosen the first nut 9 on the adjusting member corresponding to the retractor to be used, so that the adjusting member moves along the arc direction of the second through hole 5 until the adjusting member is adjusted to the required position, that is, the vertical plate 26 of the retractor on the adjusting member corresponds to the position where the surgical incision needs to be opened, tighten the first nut 9, and the protrusion 15 on the bearing rod 4 can limit the movement of the first nut 9, that is, the adjusting member is limited. After multiple adjusting members drive the retractors to be adjusted to the required position, the vertical plate 26 of the retractor to be used is hooked on the skin of the surgical incision, and the handle 2 on the driving member corresponding to the adjusting member where the retractor is located is rotated in the opposite direction. The driving rod 34 drives the worm 39 to rotate, and the worm 39 The turbine 35 is driven to rotate, and the fourth screw 36 rotates along with the turbine 35 , and the fourth screw 36 drives the driving plate 38 to move away from the turbine 35 . When the driving plate 38 moves, the water inside the housing 3 is squeezed through the water pipe 6 on the driving member and enters the bellows 29 on the corresponding adjusting member. The bellows 29 drives the movable plate 30 to move away from the adjusting plate 14 , and the connecting plate 13 drives the retractor to move outward. The vertical plate 26 of the retractor hooks the skin and moves closer to the carrying rod 4 , thereby pulling the surgical incision open and exposing the patient's affected area. The present invention is simple to operate, saves time and effort, and has a wide range of applications.

[0044] The present invention can adjust the angle between the left supporting frame and the right supporting frame, that is, loosen the third nut 18, so that the left end of the supporting rod 4 of the left supporting frame is tilted upward, and the right end of the supporting rod 4 of the right supporting frame is tilted upward, and tighten the third nut 18. After the supporting rods 4 of the left and right parts of the present invention form an angle, the retractor and the surgical incision skin can form a certain angle. During the movement of the retractor, the retractor can pull the skin more stably and prevent the skin from slipping on the vertical plate 26 of the retractor.

[0045] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Without violating the spirit of the present invention, that is, within the scope of disclosure, any equivalent or equivalent modifications or replacements of the technical solutions of the invention shall fall within the scope of protection of the present invention.

Claims

1. A surgical retractor, characterized in that: Including carrier frame and retractor; The carrier frame includes a left carrier frame and a right carrier frame that are symmetrical on both sides. The left carrier frame includes a carrier rod (4) and an adjusting member. A first through hole (23) penetrating the inner and outer sides of the carrier rod (4) is provided in the carrier rod (4). A second through hole (5) communicating with the first through hole (23) is provided on the top surface of the carrier rod (4). A plurality of adjusting members are provided on the carrier rod (4). The adjusting members include an adjusting plate (14), a guide cylinder (10) and a connecting plate (13). The adjusting plate (14) is slidably provided in the first through hole (23). A limiting member extending out of the second through hole (5) is provided at the upper end of the adjusting plate (14). An open end of the guide cylinder (10) is connected to the outer side of the adjusting plate (14) through the first through hole (23). The upper and lower ends of the peripheral wall of the guide cylinder (10) are respectively provided with An upper sliding hole (11) and a lower sliding hole (27) are provided, a movable plate (30) is slidably provided in the guide cylinder (10), a bellows (29) is connected between the opposite sides of the movable plate (30) and the adjustment plate (14), the connecting plate (13) is sleeved on the guide cylinder (10) outside the load-bearing rod (4) through the through-hole (33) provided on the upper part, the upper and lower ends of the movable plate (30) are fixedly connected to the through-hole (33) through the connecting block (25) passing through the upper sliding hole (11) and the lower sliding hole (27), respectively, and a draw hook is provided at the lower part of the adjustment plate (14), one end of the hook body of the draw hook is located on the inner side of the load-bearing rod (4), one end of the hook handle of the draw hook passes through the first through hole (23) and the adjustment plate (14) and extends out of the outside of the load-bearing rod (4), and the connecting plate (13) is in a sliding state along one end of the hook handle of the draw hook; Both ends of the left-side load-bearing rod (4) and both ends of the right-side load-bearing rod (4) are connected via a connecting member; the connecting member includes a first connecting member and a second connecting member, one end of the load-bearing rod (4) is a connecting end and the other end is an adjusting end, the adjusting end of the load-bearing rod (4) on the left load-bearing frame and the adjusting end of the load-bearing rod (4) on the right load-bearing frame are connected via the first connecting member, and the connecting end of the load-bearing rod (4) on the left load-bearing frame and the connecting end of the load-bearing rod (4) on the right load-bearing frame are connected via the second connecting member; The second connecting member is connected to a driving member corresponding to a plurality of adjusting members on the carrier frame, and the driving member includes a shell (3), a fourth screw (36), a driving rod (34) and a water pipe (6). The front and rear end openings of the shell (3) are closed by a sealing plate (37). The fourth screw (36) is located in the shell, and the front and rear ends are respectively connected to the sealing plates (37) at the front and rear ends of the shell (3). The fourth screw (36) is threadedly connected to a driving plate (38) whose outer wall and the inner wall of the shell (3) are in sliding contact. The fourth screw (36) on the front side of the driving plate (38) is fixedly connected to a turbine (35). The left side of the turbine (35) is engaged with the outer wall of the fourth screw (36). A worm (39) is provided, and the upper and lower ends of the worm (39) are rotatably connected to the upper and lower surfaces inside the shell (3), respectively. The upper end of the worm (39) is connected to a driving rod (34) that passes through the shell (3) upward, and the upper end of the driving rod (34) is connected to a handle (2). One end of the water pipe (6) is connected to the space between the driving plate (38) and the rear side of the shell (3), and the other end extends into the upper sliding hole (11) on the corresponding adjustment member. The end of the water pipe (6) extending into the upper sliding hole (11) passes through the movable plate (30) and is connected to the bellows (29). The shell (3) is provided with a water injection hole located on the rear side of the driving plate (38), and a hole plug (22) is provided in the water injection hole.

2. A surgical retractor according to claim 1, characterized in that: The left-side bearing rod (4) is a rod body with an arc-shaped protrusion facing leftward, and a plurality of protrusions (15) are provided on the top surface of the bearing rod (4) outside the second through hole (5).

3. A surgical retractor according to claim 2, characterized in that: The limiting member comprises a slider (41), a first screw (8) and a first nut (9); the upper end of the adjusting plate (14) is connected to the slider (41) which is located in the second through hole (5) and in sliding contact with the second through hole (5); the top surface of the slider (41) is connected to the first screw (8); and the first nut (9) is screwed onto the first screw (8) and is pressed against the protrusion (15).

4. A surgical retractor according to claim 1, characterized in that: The draw hook comprises a transverse plate (12) and a vertical plate (26), the inner end of the transverse plate (12) is located on the inner side of the load-bearing rod (4) and is connected to the vertical plate (26), constituting one end of the hook body of the draw hook, the outer end of the transverse plate (12) passes through the first through hole (23) and the adjustment plate (14), extends out of the outside of the load-bearing rod (4), constituting one end of the hook handle of the draw hook, the transverse plate (12) and the vertical plate (26) are an integrally formed structure, the connection between the transverse plate (12) and the vertical plate (26) is in an arc transition shape, the lower end of the vertical plate (26) is an arc surface, the transverse plate (12) is provided with a strip hole (7), the lower end of the connecting plate (13) on the adjustment member where the draw hook is located is provided with a second screw (31), the lower end of the second screw (31) passes through the strip hole (7) and is limited below the transverse plate (12) by the second nut (32).

5. The surgical retractor according to claim 1, characterized in that: A tension spring (28) sleeved outside the bellows (29) is provided between the bellows (29) and the guide cylinder (10) on each adjusting member, and two ends of the tension spring (28) are respectively connected to the movable plate (30) and the adjusting plate (14) on both sides of the bellows (29).

6. The surgical retractor according to claim 1, characterized in that: The first connecting member includes a first connecting plate (19) and a second connecting plate (16), the adjustment end of the bearing rod (4) on the left bearing frame is vertically connected to the first connecting plate (19), and the adjustment end of the bearing rod (4) on the right bearing frame is vertically connected to the second connecting plate (16), and the second connecting plate (16) is connected to a third screw rod (17) that passes through the first connecting plate (19) and is limited by a third nut (18).

7. A surgical retractor according to claim 6, characterized in that: The second connecting member includes a third connecting plate (21) and a fourth connecting plate (20), the third connecting plate (21) is vertically connected to the rear of the connecting end of the bearing rod (4) on the left bearing frame, and the fourth connecting plate (20) is vertically connected to the front of the connecting end of the bearing rod (4) on the right bearing frame, the third connecting plate (21) and the fourth connecting plate (20) are rotatably connected via a connecting rod (40), and the third screw rod (17) on the first connecting member and the connecting rod (40) on the second connecting member are coaxial.

8. The surgical retractor according to claim 7, characterized in that: The plurality of driving members are connected in sequence from back to front, the sealing plate (37) at the rear of the housing (3) on the driving member at the rear end of the plurality of driving members is fixedly connected to the fourth connecting plate (20), and the sealing plate (37) at the front of the housing (3) on the driving member at the front end of the plurality of driving members is connected to the connecting rod (1).

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