A positioning device for hepatobiliary surgery

Abstract

The present invention discloses a positioning device for hepatobiliary surgical operations, comprising two lateral clamping blocks, wherein the top centers of the two lateral clamping blocks are fixedly connected with a bearing block, the corresponding sides of the two bearing blocks are both opened, the inner cavities of the two bearing blocks are hinged with a fourth transmission plate near the top, the corresponding sides of the two bearing blocks are both provided with movable blocks, and the cross-sections of the two movable blocks are both concave. The present invention changes the traditional fixing method of the positioning hook installed on the steel rod of the hand bed through the lateral clamping blocks, simplifies the fixing method, avoids the problem of blocking the surgical field of view due to the problem of the traditional fixing method of the positioning hook, and can be folded and stored at the end of the operation through the mutual cooperation between the bearing block, the fourth transmission plate, the first transmission plate, the second transmission plate, the third transmission plate, and the fifth transmission plate, thereby improving practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical supplies, and in particular to a positioning device for hepatobiliary surgery. Background Art

[0002] Hepatobiliary surgery mainly treats surgical diseases of the liver, gallbladder, and bile duct. When the patient's condition is more serious, surgery is required for treatment. Before the operation begins, a series of medical tools are needed to help with positioning, such as retractors.

[0003] The use of the retractor is that after the doctor cuts the patient's skin and muscles, the muscles will contract, and the surgical nurse needs to use the retractor to expand the surgical incision to expose the patient's internal vision. However, the existing surgical positioning retractor is inconvenient to install and needs to be clamped and fixed by a steel rod on the operating table, which reduces the doctor's surgical activity space. In addition, the existing surgical positioning retractor is inconvenient to adjust the angle. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning device for hepatobiliary surgery, comprising two lateral clamping blocks, the top centers of the two lateral clamping blocks are fixedly connected to a bearing block, the corresponding sides of the two bearing blocks are both opened, the inner cavities of the two bearing blocks are hinged with a fourth transmission plate near the top, the corresponding sides of the two bearing blocks are provided with a movable block, and the cross-sections of the two movable blocks are both concave, the bottoms of the two fourth transmission plates are hinged to the inner cavities of adjacent movable blocks, the two fourth transmission plates are hinged with a third transmission plate, the inner cavity of the third transmission plate on the side away from the bearing block is penetrated by a connecting rod, the inner cavity of the bearing block is hinged with a second transmission plate near the bottom, and the second transmission plate is away from the bearing block. One side of the carrier block is sleeved on the outside of the connecting rod, and the outside of the connecting rod is sleeved with a first transmission plate, and the side of the first transmission plate away from the connecting rod is hinged to the inner cavity of the movable block, and the inner cavity of the movable block is hinged with a fifth transmission plate, and the rear sides of the two movable blocks are fixedly connected to a protective cover, and a cavity is opened in the inner cavity of the protective cover, and a knob is provided at the top of the protective cover near the rear side, and a transmission rod is fixedly connected to the bottom of the knob, and the bottom end of the transmission rod passes through the protective cover and extends to the cavity, and a worm wheel is fixedly connected to the bottom end of the transmission rod, and a worm is meshed with the front side of the worm wheel, and a threaded hole is opened in the inner cavity of the worm, and a lead screw is meshed in the inner cavity of the threaded hole, and bearings are installed at the corresponding ends of the two lead screws, and the corresponding sides of the two bearings are fixedly connected to the first shell. The front and rear sides of the first shell are fixedly connected with cross plates near the bottom, and the tops of the two cross plates are provided with placement blocks, the inner cavity of the placement block is penetrated by a vertical rod, the bottom end of the vertical rod is fixedly connected to the top of the cross plate, the outer sides of the vertical rods are fixedly sleeved with a limit plate, and a plurality of first tooth blocks are fixedly connected to the limit plate, the limit plate is located in the inner cavity of the placement block, the inner cavity of the placement block is provided with an engaging plate, and the engaging plate is fixedly connected with a second tooth block, the first tooth block and the second tooth block are arranged to mesh with each other, a rotating shaft is penetrated by the inner cavity of the engaging plate and fixedly connected thereto, the upper and lower ends of the rotating shaft are fixedly connected to the side walls adjacent to the inner cavity of the placement block, and the corresponding sides of the plurality of placement blocks are fixedly connected with the second shell, and the second shell and the first shell The inner cavities are all provided with fixing mechanisms, and several of the fixing mechanisms include a movable plate, a push block is fixedly connected to the top of the movable plate, a first slot is provided on the top of the first shell, and a second slot is provided on the top of several of the second shells, the top of the push block located in the inner cavity of the first shell passes through the first slot, and the top of the push block located in the inner cavities of several of the second shells passes through the second slot, the front and rear sides of the movable plate are fixedly connected with connecting rods, the upper and lower sides of the two connecting rods are hinged with adjustment plates, and linkage plates are hinged between every two adjacent adjustment plates, and the corresponding sides of several linkage plates are fixedly connected with movable plates, and the corresponding sides of several movable plates are fixedly connected with several third tooth blocks, and the corresponding sides of several movable plates have tooth plates,The movable plate is meshed with the tooth plate through a plurality of third tooth blocks, and a plurality of the tooth plates are fixedly connected to sliders at the bottom, a first slide groove is provided at the bottom of the inner cavity of the first shell, and the bottoms of the two sliders located in the inner cavity of the first shell are movably connected to the inner cavity of the first slide groove, and a plurality of the second shell inner cavity are provided with a second slide groove, and the bottoms of the two sliders located in the inner cavity of the second shell are movably connected to the inner cavity of the second slide groove, and a plurality of the tooth plates are fixedly connected to the corresponding sides with springs, and a plurality of the tooth plates are fixedly connected to the corresponding sides with clamping plates, and a clamping opening is provided on the first shell and the second shell, and a plurality of the clamping plates penetrate the inner cavities of the adjacent clamping openings, and a hook is provided on the corresponding sides of the first shell and the second shell, and the cross section of the hook is L-shaped, and the hook can be inserted between the two clamping plates through the inner cavity of the clamping opening, and the tooth plate can fix and clamp the hook through the clamping plate.

[0005] Preferably, the materials of the limiting plates, the meshing plates, the first tooth block and the second tooth block are all medical PVC materials.

[0006] Preferably, a plurality of thermal insulation pads are installed on the inner side walls of the two side clamping blocks, and the plurality of thermal insulation pads are arranged in an umbrella shape.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] 1. The present invention changes the traditional fixing method of the positioning hook installed on the steel rod of the hand bed through the side clamp block, simplifies the fixing method, avoids the problem of blocking the surgical field of view due to the problem of the traditional positioning hook fixing method, and through the mutual cooperation between the bearing block, the fourth transmission plate, the first transmission plate, the second transmission plate, the third transmission plate, and the fifth transmission plate, they can be folded and stored at the end of the operation, thereby improving practicality.

[0009] 2. Through the mutual cooperation between the push block, connecting rod, movable plate, tooth plate, clamping plate and other components, the hook can be fixed and clamped to improve the stability of the hook. At the same time, the movable distance range of the hook is also increased. Through the mutual cooperation of the limit plate and the meshing plate, the angle of the hook can be easily adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] Figure 2 It is a front view of the structure of the present invention;

[0012] Figure 3 This is a schematic diagram of the structure of the component bearing block of the present invention;

[0013] Figure 4 This is a schematic diagram of the protective cover structure of the component of the present invention;

[0014] Figure 5This is a schematic diagram of the structure of the limiting plate component of the present invention;

[0015] Figure 6 It is a schematic diagram of the structure of the component fixing mechanism of the present invention.

[0016] Numbers in the figure: 1. side clamping block; 2. insulation pad; 3. bearing block; 4. protective cover; 5. knob; 6. first shell; 7. placement block; 8. hook; 9. bearing; 10. screw; 11. cross plate; 12. movable block; 13. worm gear; 14. first transmission plate; 15. second transmission plate; 16. third transmission plate; 17. fourth transmission plate; 18. fifth transmission plate; 19. worm; 20. push block; 21. limit plate; 22. meshing plate; 23. moving plate; 24. connecting rod; 25. adjusting plate; 26. linkage plate; 27. movable plate; 28. tooth plate; 29. ​​spring; 30. slider; 31. clamping plate; 32. second shell. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-6The present invention provides a technical solution: a positioning device for hepatobiliary surgery, comprising two lateral clamping blocks 1, a plurality of heat preservation pads 2 are installed on the inner side walls of the two lateral clamping blocks 1, and the plurality of heat preservation pads 2 are arranged in an umbrella shape, a bearing block 3 is fixedly connected to the center of the top of the two lateral clamping blocks 1, the corresponding sides of the two bearing blocks 3 are both opened, the inner cavities of the two bearing blocks 3 are hinged with fourth transmission plates 17 near the top, the corresponding sides of the two bearing blocks 3 are each provided with a movable block 12, and the cross-sections of the two movable blocks 12 are both concave, the bottoms of the two fourth transmission plates 17 are hinged to the inner cavities of the adjacent movable blocks 12, the two fourth transmission plates 17 are hinged with a third transmission plate 16, the inner cavity of the third transmission plate 16 away from the bearing block 3 is penetrated by a connecting rod, and the inner cavity of the bearing block 3 is hinged with a second transmission plate 17 near the bottom The movable plate 15, the side of the second transmission plate 15 away from the bearing block 3 is sleeved on the outside of the connecting rod, the outside of the connecting rod is sleeved with the first transmission plate 14, the side of the first transmission plate 14 away from the connecting rod is hinged to the inner cavity of the movable block 12, the inner cavity of the movable block 12 is hinged with the fifth transmission plate 18, the rear sides of the two movable blocks 12 are fixedly connected with the protective cover 4, the inner cavity of the protective cover 4 is provided with a cavity, the top of the protective cover 4 is provided with a knob 5 near the rear side, the bottom of the knob 5 is fixedly connected with a transmission rod, the bottom end of the transmission rod passes through the protective cover 4 and extends to the cavity, the bottom end of the transmission rod is fixedly connected with a worm gear 13, the front side of the worm gear 13 is meshed with a worm 19, the inner cavity of the worm 19 is provided with a threaded hole, the inner cavity of the threaded hole is meshed with a screw 10, the corresponding ends of the two screws 10 are installed with bearings 9, and the corresponding sides of the two bearings 9 are fixedly connected with the first housing 6.

[0019] The first shell 6 is fixedly connected with a transverse plate 11 near the bottom on both the front and rear sides, and a placement block 7 is provided on the top of the two transverse plates 11. A vertical rod is provided through the inner cavity of the placement block 7, and the bottom end of the vertical rod is fixedly connected to the top of the transverse plate 11. The outer side of the vertical rod is fixedly sleeved with a limit plate 21, and a plurality of first tooth blocks are fixedly connected to the limit plate 21. The limit plate 21 is located in the inner cavity of the placement block 7, and an engaging plate 22 is provided in the inner cavity of the placement block 7. A second tooth block is fixedly connected to the engaging plate 22. The first tooth block and the second tooth block are arranged to mesh with each other. A rotating shaft is provided through the inner cavity of the engaging plate 22 and is fixedly connected thereto. The upper and lower ends of the rotating shaft are fixedly connected to the side walls adjacent to the inner cavity of the placement block 7, and the corresponding sides of the plurality of placement blocks 7 are fixedly connected with a second shell 32. The materials of the plurality of limit plates 21, the engaging plate 22, the first tooth block and the second tooth block are all made of medical PVC material, and the second shell 32 and the inner cavity of the first shell 6 are both provided with a fixing mechanism.

[0020] The medical PVC material can make the component material safer and more environmentally friendly, and at the same time make the limiting plate 21, the engaging plate 22, the first tooth block and the second tooth block have plasticity to achieve the limiting and fixing function.

[0021] Several fixing mechanisms all include a movable plate 23, a push block 20 is fixedly connected to the top of the movable plate 23, a first slot is opened on the top of the first shell 6, and second slots are opened on the tops of several second shells 32. The top of the push block 20 located in the inner cavity of the first shell 6 passes through the first slot, and the top of the push block 20 located in the inner cavity of several second shells 32 passes through the second slot. At the same time, clamping devices are provided on the first shell 6 and the second shell 32 to facilitate fixing the push block 20.

[0022] The movable plate 23 is fixedly connected with connecting rods 24 on both the front and rear sides, and the two connecting rods 24 are hinged with adjusting plates 25 on the upper and lower sides. A linkage plate 26 is hinged between every two adjacent adjusting plates 25. The corresponding sides of several linkage plates 26 are fixedly connected with movable plates 27, and the corresponding sides of several movable plates 27 are fixedly connected with several third tooth blocks. The corresponding sides of several movable plates 27 have tooth plates 28, and the movable plates 27 are meshed with the tooth plates 28 through the several third tooth blocks.

[0023] The bottom of several tooth plates 28 are fixedly connected with sliders 30, the bottom of the inner cavity of the first shell 6 is provided with a first slide groove, the bottom of the two sliders 30 located in the inner cavity of the first shell 6 are movably connected to the inner cavity of the first slide groove, the bottom of the inner cavity of several second shells 32 are provided with a second slide groove, the bottom of the two sliders 30 located in the inner cavity of the second shell 32 are movably connected to the inner cavity of the second slide groove, the corresponding sides of several tooth plates 28 are fixedly connected with springs 29, the corresponding sides of several tooth plates 28 are fixedly connected with clamping plates 31, clamping openings are provided on the first shell 6 and the second shell 32, and several clamping plates 31 pass through the adjacent inner cavities of the clamping openings, the corresponding sides of the first shell 6 and the second shell 32 are provided with hooks 8, and the cross-section of the hook 8 is L-shaped.

[0024] Working principle: First, the doctor clamps the two side clamps 1 on both sides of the patient's waist. The insulation pad 2 can reduce the patient's discomfort with hard objects. Then, the movable block 12 is moved downward. The fourth transmission plate 17, the third transmission plate 16, the second transmission plate 15, the first transmission plate 14 and the fifth transmission plate 18 cooperate with each other to provide pulling force to the movable block 12 to prevent the movable block 12 from shaking. At this time, the retractor 8 can be inserted between the two clamps 31 through the inner cavity of the clamping port, and then the push block 20 is manually driven to move. When the push block 20 moves, it can drive a number of adjustment plates 25 to flip through the connecting rod 24. The adjustment plates 25 can be turned over by the connecting rod 24. The movable plate 27 is turned over by the linkage plate 26, and the movable plate 27 can drive the tooth plate 28 to move through a plurality of third tooth blocks. The tooth plate 28 can fix and clamp the hook 8 through the clamping plate 31. The movement trajectory of the tooth plate 28 can be limited by the cooperation of the slider 30 and the slide groove. The purpose of adjusting the angle of the hook 8 can be achieved through the cooperation of the limiting plate 21, the first tooth block, the second tooth block and the meshing plate 22. Afterwards, the knob 5 is manually rotated to drive the worm wheel 13 to rotate, the worm wheel 13 can drive the worm 19 to rotate, and the worm 19 can drive the screw 10 to rotate through the internal thread, thereby achieving the purpose of driving the hook 8 to move.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for hepatobiliary surgery, comprising two lateral clamping blocks (1), characterized in that: The two side clamping blocks (1) are fixedly connected to a bearing block (3) at the center of the top, and the two corresponding sides of the bearing blocks (3) are both opened. The inner cavities of the two bearing blocks (3) are hinged with a fourth transmission plate (17) near the top. The two corresponding sides of the bearing blocks (3) are both provided with a movable block (12), and the cross-sections of the two movable blocks (12) are both concave. The bottoms of the two fourth transmission plates (17) are hinged to the inner cavities of the adjacent movable blocks (12). The two fourth transmission plates (17) are hinged with a third transmission plate (16). A connecting rod is penetrated through the inner cavity of the third transmission plate (16) on the side away from the bearing block (3). The inner cavity of the bearing block (3) is hinged with a second transmission plate (15) near the bottom. The second transmission plate (15) is sleeved on the outside of the connecting rod at a side away from the bearing block (3), and the first transmission plate (14) is sleeved on the outside of the connecting rod. The first transmission plate (14) is hinged on the inner cavity of the movable block (12) at a side away from the connecting rod. The inner cavity of the movable block (12) is hinged with a fifth transmission plate (18). The rear sides of the two movable blocks (12) are fixedly connected to a protective cover (4). The inner cavity of the protective cover (4) is provided with a cavity. The top of the protective cover (4) is provided with a knob (5) near the rear side. The bottom of the knob (5) is fixedly connected to a transmission rod. The bottom end of the transmission rod passes through the protective cover (4) and extends to the cavity. The bottom end of the transmission rod is fixedly connected to a worm wheel (13). The front side of the worm wheel (13) is meshed with a worm (19). The worm (19) has an inner cavity with a threaded hole, and a screw (10) is meshed in the inner cavity of the threaded hole. The corresponding ends of the two screws (10) are both installed with bearings (9). The corresponding sides of the two bearings (9) are both fixedly connected to a first housing (6). The front and rear sides of the first housing (6) are both fixedly connected to a horizontal plate (11) near the bottom. The tops of the two horizontal plates (11) have a placement block (7). The inner cavity of the placement block (7) is penetrated by a vertical rod. The bottom end of the vertical rod is fixedly connected to the top of the horizontal plate (11). The outer sides of the vertical rods are fixedly sleeved with a limit plate (21), and the limit plate (21) is fixedly connected to a plurality of first tooth blocks. The limit plate (21) is located in the inner cavity of the placement block (7). The placement block ( 7) An inner cavity has an engagement plate (22), a second tooth block is fixedly connected to the engagement plate (22), the first tooth block and the second tooth block are arranged to mesh with each other, a rotating shaft is passed through the inner cavity of the engagement plate (22) and is fixedly connected thereto, the upper and lower ends of the rotating shaft are fixedly connected to the side walls adjacent to the inner cavity of the placement block (7), a second shell (32) is fixedly connected to the corresponding side of a plurality of the placement blocks (7), the second shell (32) and the inner cavity of the first shell (6) both have a fixing mechanism, and a plurality of the fixing mechanisms include a moving plate (23), a push block (20) is fixedly connected to the top of the moving plate (23), a first slot is provided on the top of the first shell (6), and a second slot is provided on the top of a plurality of the second shells (32).The top of the push block (20) located in the inner cavity of the first shell (6) passes through a first slot, and the top of the push block (20) located in the inner cavity of the plurality of second shells (32) passes through a second slot. The front and rear sides of the movable plate (23) are fixedly connected to connecting rods (24), and the upper and lower sides of the two connecting rods (24) are hinged to adjusting plates (25). A linkage plate (26) is hinged between each pair of adjacent adjusting plates (25). The corresponding sides of the plurality of linkage plates (26) are fixedly connected to movable plates (27), and the corresponding sides of the plurality of movable plates (27) are fixedly connected to a plurality of third tooth blocks. The corresponding sides of the plurality of movable plates (27) are provided with tooth plates (28), and the movable plates (27) are meshed with the tooth plates (28) through the plurality of third tooth blocks. The bottoms of the plurality of tooth plates (28) are fixedly connected to sliders (30). The bottom of the inner cavity of the first shell (6) is provided with a first slide groove. The bottoms of the two sliders (30) in the inner cavity of the first shell (6) are movably connected to the inner cavity of the first slide groove, the bottoms of the inner cavities of the second shells (32) are provided with second slide grooves, the bottoms of the two sliders (30) in the inner cavity of the second shell (32) are movably connected to the inner cavity of the second slide groove, the corresponding sides of the plurality of tooth plates (28) are fixedly connected with springs (29), the corresponding sides of the plurality of tooth plates (28) are fixedly connected with clamping plates (31), the first shell (6) and the second shell (32) are provided with clamping openings, the plurality of clamping plates (31) penetrate the inner cavities of the adjacent clamping openings, the corresponding sides of the first shell (6) and the second shell (32) are provided with hooks (8), the cross section of the hooks (8) is L-shaped, the hooks (8) can be inserted through the inner cavity of the clamping opening between the two clamping plates (31), and the tooth plates (28) can fix and clamp the hooks (8) through the clamping plates (31).

2. A positioning device for hepatobiliary surgery according to claim 1, characterized in that: The materials of the plurality of limit plates (21), the meshing plates (22), the first tooth block and the second tooth block are all medical PVC materials.

3. A positioning device for hepatobiliary surgery according to claim 1, characterized in that: A plurality of thermal insulation pads (2) are installed on the inner side walls of the two side clamping blocks (1), and the plurality of thermal insulation pads (2) are arranged in an umbrella shape.

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