Endoscope traction device for head and neck surgery department

Abstract

The invention discloses a head and neck surgery endoscope traction device, belongs to the technical field of endoscope traction, and aims to solve the problems that secondary trauma is caused to a wound of a patient when a first drag hook is disassembled, assembled and disinfected after the traction device performs traction for a long time, and the wound of the patient is secondarily torn due to the fact that the traction force of medical staff cannot be uniformly controlled. Fasteners are slidably arranged on the bottom faces of two supports respectively, an expansion assembly is fixedly arranged on the two supports jointly, a grab handle is arranged on the fasteners in a penetrating mode, a first drag hook and a second drag hook are slidably arranged in an inner cavity of the grab handle respectively, an extension assembly is slidably arranged on the second drag hook, and a pushing assembly is slidably arranged in the grab handle. By means of the traction device, the situation that medical staff cause secondary injury to a wound of a patient due to uneven traction force can be prevented, and seamless replacement between the second drag hook and the first drag hook can be achieved without disassembling and assembling the traction device.

Description

Technical Field

[0001] The present invention relates to the technical field of laparoscopic traction, in particular to a laparoscopic traction device for head and neck surgery. Background Art

[0002] Laparoscopic surgery in head and neck surgery is an endoscopic technique, which is a way of performing surgery by entering the body through a tiny incision. In addition to being minimally invasive, it also has the characteristics of precise operation, effective control of bleeding, rapid recovery and few complications. During the implementation of laparoscopic surgery in head and neck surgery, a traction device is required to expose the surgical field in order to achieve the purpose of separating tissue gaps and expanding narrow space operations, which is conducive to achieving precise operation.

[0003] The current laparoscopic traction device for head and neck surgery requires the retractors on the traction device to be disassembled and disinfected after continuous traction for more than 4 hours, and the disinfected retractors must be replaced for use. When the retractors are disassembled and assembled, it will not only affect the efficiency of the operation, but may also cause secondary trauma to the patient's wound. In addition, when the traction device is pulling the patient's wound, some of the traction is performed manually by medical staff. During the process of pulling the patient's wound, the traction force cannot be evenly controlled, resulting in secondary tearing of the patient's wound, causing secondary injury to the patient.

[0004] In view of the above problems, a head and neck surgery laparoscopic traction device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a laparoscopic traction device for head and neck surgery. By using this device, the problem of affecting the surgical efficiency and causing secondary trauma to the patient's wound when the retractor is disassembled and disinfected after long-term traction in the above-mentioned background is solved. In addition, the problem of secondary tearing of the patient's wound caused by the medical staff's inability to uniformly control the traction force is also solved.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a head and neck surgical laparoscopic traction device, comprising a mounting frame and a flip rod rotatably arranged on the mounting frame, a pair of brackets being sleeved on the flip rod, fasteners being slidably arranged on the bottom surfaces of the two brackets, an expansion assembly being fixedly arranged on the two brackets, and a fixed connection being made between the expansion assembly and the fasteners, a handle being inserted into the fasteners, a pair of slide rails 1 and a pair of slide rails 2 being symmetrically fixedly arranged on the side walls of the inner cavity of the handle, and slide rail 1 being arranged above slide rail 2, and the two slide rails 1 and 2 being symmetrically fixedly arranged on the side walls of the inner cavity of the handle, A load-bearing plate is fixedly provided at one end thereof, and a first hook and a second hook are slidably provided on the inner cavity of the handle respectively. The first hook is slidably provided on the second slide rail, and the second hook is slidably provided on the first slide rail. A first rotating handle is rotatably provided on the first hook, and a second rotating handle is rotatably provided on the second hook. The first rotating handle and the second rotating handle are respectively threadedly connected to the side walls of the handle, an extension component is slidably provided on the second hook, and a propulsion component is slidably provided inside the handle, and the propulsion component and the second rotating handle are threadedly connected. An inclined plate is also slidably provided inside the handle.

[0007] Furthermore, the bracket includes a frame body sleeved on the flip rod, and a sliding groove is provided on the bottom surface of the frame body;

[0008] The fastener comprises a fastener body which is slidably mounted in the slide groove. A connecting rod is fixedly mounted on the side wall of the fastener body, and the connecting rod penetrates and is slidably mounted on the side wall of the slide groove.

[0009] Furthermore, the expansion assembly includes an outer shell fixedly mounted on the side wall of the frame, a clearance groove is provided on the bottom surface of the outer shell, a first tooth plate and a second tooth plate are slidingly mounted on the bottom surface and the top surface of the inner cavity of the outer shell respectively, a rotating assembly is rotatably mounted through the side wall of the outer shell, a gear is fixedly mounted on the side wall of the rotating assembly, the gear is meshed with the first tooth plate and the second tooth plate respectively, a speed limiting assembly is fixedly mounted on the side wall of the inner cavity of the outer shell, the two connecting rods are fixedly connected to the first tooth plate and the second tooth plate respectively by connecting pieces, and the connecting pieces are slidably arranged in the inner cavity of the clearance groove.

[0010] Furthermore, the rotating assembly includes a rotating shaft that is rotatably installed on the side wall of the outer shell, a gear is fixedly installed on the side wall of the rotating shaft, a special-shaped groove is opened inside the rotating shaft, the lower end of the special-shaped groove is connected with the outside world, a clamping plate is slidably installed on the vertical section of the inner cavity of the special-shaped groove, the side wall of the clamping plate and the side wall of the inner cavity of the special-shaped groove are elastically connected by spring 1, a through groove is opened on the clamping plate, the through groove is connected with the horizontal section of the inner cavity of the special-shaped groove, a slide is slidably installed on the horizontal section of the inner cavity of the special-shaped groove, the side wall of the slide is elastically connected to the side wall of the inner cavity of the special-shaped groove by spring 2, a crank is rotatably installed on the side wall of the slide, a number of clamping grooves are also opened inside the rotating shaft, a clamping bead is elastically slidably installed on the top surface of the slide, the clamping groove and the clamping bead can form a clamping relationship, and a pressure plate is fixedly installed on the end of the slide away from the crank.

[0011] Furthermore, the speed limiting assembly includes a hollow plate fixedly mounted on the side wall of the inner cavity of the shell, and a plurality of tooth blocks are fixedly mounted on the side wall of the inner cavity of the hollow portion of the hollow plate.

[0012] Furthermore, the second hook includes a hook body 2 slidably mounted on the slide rail 1, and a guide groove 2 is respectively provided at the two side edges of the bottom surface of the hook body 2. A plurality of arc-shaped connecting plates are fixedly mounted on the side wall of the end of the hook body 2 away from the second turning handle, and a mounting column is fixedly mounted on the bottom surface of the arc-shaped connecting plate. The extension component is slidably sleeved on the circumferential outer wall of the mounting column. A limiting groove 2 is provided on the side wall of the end of the hook body 2 close to the second turning handle, and a slider 2 is slidably mounted in the inner cavity of the limiting groove 2. The side wall of the slider 2 and the side wall of the inner cavity of the limiting groove 2 are elastically connected by a spring 3, and the slider 2 is rotatably connected to the second turning handle.

[0013] Furthermore, the extension component includes a second pulling claw, which is slidably sleeved on the circumferential outer wall of the mounting column, and the second pulling claw is elastically connected to the mounting column through a fourth spring.

[0014] Furthermore, mounting groove 1 and mounting groove 2 are respectively opened on the bottom surface of the inner cavity of the handle, and mounting groove 1 and mounting groove 2 are connected. Mounting groove 3 is symmetrically opened on the inner walls on both sides of the inner cavity of mounting groove 1, and the inclined plate is slidably installed in the inner cavity of mounting groove 3.

[0015] Furthermore, the propulsion assembly includes an outer sleeve slidably mounted inside the handle, a long groove is provided on the side wall of the inner cavity of the outer sleeve, an inner lining tube is slidably mounted inside the outer sleeve, and the inner lining tube forms a limiting relationship with the long groove, and the inner lining tube cannot rotate inside the outer sleeve. The inner lining tube and the outer sleeve are elastically connected by spring five, and one end of the outer sleeve close to the inclined plate is arranged in the inner cavity of the mounting groove one, and a mounting plate is fixedly mounted on the end of the inner lining tube, and the mounting plate is threadedly connected to the second turning handle.

[0016] Furthermore, the first hook includes a hook body 1, and a guide groove 1 is respectively provided on the two side edges of the bottom surface of the hook body 1. A plurality of claws 1 are fixedly installed on the side wall of the end of the hook body 1 away from the first rotating handle. The claw 1 and the claw 2 are staggered. A limiting groove 1 is provided on the side wall of the end of the hook body 1 close to the first rotating handle. A slider 1 is slidably installed in the inner cavity of the limiting groove 1, and a spring 6 is passed between the side wall of the slider 1 and the side wall of the inner cavity of the limiting groove 1.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can achieve rapid traction in the front section to overcome the initial resistance of the tissue, saving operation time and improving surgical efficiency. In the middle and back sections of traction, the centrifugal force during the rotation process can be used to limit the rotation speed of the shaft and gear, thereby limiting the traction speed, thereby preventing medical staff from causing secondary damage to the patient's wound due to uneven traction force.

[0019] 2. After a long period of traction, the present invention can achieve seamless replacement between the second retractor and the first retractor without disassembling the traction device, which not only improves the surgical efficiency and reduces the labor intensity of medical staff, but also avoids secondary trauma to the patient's wound during the disassembly and assembly process.

[0020] 3. The first and second pulling claws of the present invention are staggered, so that the traction position can be slightly staggered and replaced without affecting the surgical field, thereby preventing long-term traction on the same position from causing damage to the patient's tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the installation position of the fastener of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of the expansion assembly of the present invention;

[0024] Figure 4 for Figure 3 A magnified view of point A;

[0025] Figure 5 A diagram showing the internal structure of the expansion assembly of the present invention;

[0026] Figure 6 Schematic diagram of the installation position of the rotating assembly and the speed limiting assembly of the present invention;

[0027] Figure 7 for Figure 6 Enlarged view of point B;

[0028] Figure 8 is a schematic diagram of the three-dimensional structure of the handle of the present invention;

[0029] Figure 9 for Figure 8 Enlarged view of point C;

[0030] Figure 10 Schematic diagram of the positional relationship between the first retractor and the second retractor of the present invention;

[0031] Figure 11 This is a diagram of the internal structure of the handle of the present invention;

[0032] Figure 12 It is a cross-sectional schematic diagram of the handle, the first retractor, the second retractor and the propulsion assembly of the present invention;

[0033] Figure 13 for Figure 12 Enlarged view of point D;

[0034] Figure 14 for Figure 12 Enlarged view of point E;

[0035] Figure 15 for Figure 12 Enlarged view of point F;

[0036] Figure 16 A schematic diagram of the three-dimensional structure of the first and second retractor hooks of the present invention;

[0037] Figure 17 is a schematic cross-sectional view of an extension assembly of the present invention;

[0038] Figure 18 for Figure 17 Enlarged view of point G;

[0039] Figure 19 for Figure 4 Enlarged view of H.

[0040] In the figure: 1. mounting frame; 2. flip rod; 3. bracket; 31. frame; 32. slide; 4. fastener; 41. fastener body; 42. connecting rod; 5. expansion assembly; 51. housing; 52. clearance groove; 53. first tooth plate; 54. second tooth plate; 55. rotating assembly; 551. rotating shaft; 552. special-shaped groove; 553. clamping plate; 554. spring 1; 555. through groove; 556. slide plate; 557. spring 2; 558. crank; 559. clamping groove; 560. clamping bead; 561. pressure plate; 56. gear; 57. speed limit assembly; 571. hollow plate; 572. tooth block; 58. connector; 6. handle; 61. mounting groove 1; 62. mounting groove 2; 63. mounting Mounting slot three; 7. Slide rail two; 8. Slide rail one; 81. Load-bearing plate; 9. First pull hook; 91. Hook body one; 92. Guide slot one; 93. Pull claw one; 94. Limit slot one; 95. Slider one; 96. Spring six; 10. First turning handle; 20. Second pull hook; 201. Hook body two; 202. Guide slot two; 203. Arc-shaped connecting plate; 204. Limit slot two; 205. Slider two; 206. Spring three; 207. Mounting column; 30. Second turning handle; 40. Propulsion assembly; 401. Outer sleeve; 402. Long slot; 403. Liner tube; 404. Spring five; 405. Mounting plate; 50. Inclined plate; 60. Extension assembly; 601. Pull claw two; 602. Spring four. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0042] In order to solve the technical problem that the medical staff cannot evenly control the traction force, which causes secondary tearing of the patient's wound, such as Figures 1-19 As shown, the following preferred technical solutions are provided:

[0043] like Figure 1As shown, a head and neck surgical laparoscopic traction device includes a mounting frame 1 and a flip rod 2 rotatably arranged on the mounting frame 1. The mounting frame 1 is used to fix the entire traction device on the operating table, and the flip rod 2 can be used to adjust the traction angle. A pair of brackets 3 are sleeved on the flip rod 2. Fasteners 4 are slidably arranged on the bottom surfaces of the two brackets 3. The brackets 3 and the fasteners 4 are used to fix the parts. An expansion component 5 is fixedly arranged on the two brackets 3, and the expansion component 5 is fixedly connected to the fastener 4. A handle 6 is inserted on the fastener 4. The expansion component 5 can drive the two fasteners 4 and the handle 6 on the fastener 4 to move in opposite directions to achieve a traction effect, such as Figure 11 As shown, a pair of slide rails 1 8 and a pair of slide rails 2 7 are symmetrically fixedly installed on the side walls of the inner cavity of the handle 6, and the slide rail 1 8 is arranged above the slide rail 2 7. The arrangement of the slide rail 1 8 and the slide rail 2 7 can play a guiding role.

[0044] like Figure 16 As shown, one end of the two slide rails 8 is fixedly provided with a bearing plate 81 for supporting the parts, and the inner cavity of the handle 6 is slidably provided with a first hook 9 and a second hook 20, as shown in FIG. Figure 11 As shown, the initial state is to use the first hook 9 for traction. After the traction device has been pulling for a long time, the first hook 9 needs to be withdrawn, and the second hook 20 is pushed out to the position of the first hook 9 to replace the first hook 9 to achieve the traction effect, so as to avoid long-term use of the traction device and infection of the patient's wound. The first hook 9 is slidably set on the slide rail 2 7, and the second hook 20 is slidably set on the slide rail 1 8. The first hook 9 is rotatably provided with a first rotating handle 10, and the second hook 20 is rotatably provided with a second rotating handle 30.

[0045] like Figure 9 and Figure 11 As shown, the first handle 10 and the second handle 30 are respectively threadedly connected to the side wall of the handle 6. When the first handle 10 is rotated clockwise, the first handle 10 drives the first hook 9 to move on the slide rail 2 7. When the second handle 30 is rotated clockwise, the second handle 30 drives the second hook 20 to move, so as to realize the replacement operation of the first hook 9 and the second hook 20. Figure 16As shown, an extension component 60 is slidably provided on the second hook 20. In the process of using the second hook 20 to replace the first hook 9, due to the height difference between the second hook 20 and the first hook 9, the extension component 60 is used to make up for the height difference between the second hook 20 and the first hook 9, so that before the first hook 9 is withdrawn, the second hook 20 can pull the position pulled by the first hook 9 through the extension component 60. When the second hook 20 completes the traction action, the first hook 9 is withdrawn. Through such a setting, seamless replacement can be achieved without disassembling the traction device, which reduces the probability of infection of the patient's wound and saves manpower. In addition, it can also avoid the traditional traction device from performing a second traction on the patient's wound during the process of replacing the first hook 9, thereby reducing the probability of secondary injury to the patient.

[0046] like Figure 1 、 Figure 9 、 Figure 11-12 and Figure 15 As shown, a propulsion assembly 40 is provided in the interior of the handle 6 for sliding movement, and the propulsion assembly 40 is threadedly connected to the second turning handle 30, as shown in FIG. Figure 12 and Figure 14 As shown, an inclined plate 50 is also slidably provided inside the handle 6. Figure 14 and Figure 16 As shown, when the second turning handle 30 is rotated clockwise, under the action of the thread, the pushing assembly 40 will slide toward the inside of the handle 6 and apply pressure to the inclined plate 50. At this time, the first hook 9 blocks the inclined plate 50, so that the inclined plate 50 will not slide into the inner cavity of the handle 6. When the first turning handle 10 is rotated clockwise, the first turning handle 10 will push the first hook 9 to shift. At this time, the first hook 9 no longer blocks the inclined plate 50, and the inclined plate 50 is pressed under the pressure of the pushing assembly 40. Slide it down into the inner cavity of the handle 6, and then rotate the first handle 10 counterclockwise to drive the first hook 9 to withdraw into the inner cavity of the handle 6. During the withdrawal process, the first hook 9 will conflict with the inclined plate 50, causing the first hook 9 to move obliquely upward, and when the first hook 9 is separated from the inclined plate 50, it will fall directly on the slide rail 2 7. At this time, continue to rotate the first handle 10 counterclockwise until the first hook 9 is completely retracted into the inner cavity of the handle 6, and the withdrawal operation of the first hook 9 can be completed.

[0047] like Figure 2 As shown, the bracket 3 includes a frame body 31 sleeved on the flip rod 2 , and a sliding groove 32 is provided on the bottom surface of the frame body 31 .

[0048] The fastener 4 includes a fastener body 41 slidably installed in the slide groove 32, and a connecting rod 42 is fixedly installed on the side wall of the fastener body 41, and the connecting rod 42 is slidably set on the side wall of the slide groove 32. The slide groove 32 limits the fastener body 41, so that the fastener body 41 can slide stably along the preset trajectory.

[0049] like Figure 3 and Figure 5-Figure 6 As shown, the expansion component 5 includes a shell 51 fixedly mounted on the side wall of the frame 31. The shell 51 is provided to limit and protect the internal components. A clearance groove 52 is provided on the bottom surface of the shell 51 so that the various components will not interfere with each other during operation. A first tooth plate 53 and a second tooth plate 54 are slidably mounted on the bottom and top surfaces of the inner cavity of the shell 51 respectively. A rotating component 55 is rotatably mounted on the side wall of the shell 51. A gear 56 is fixedly mounted on the side wall of the rotating component 55. The gear 56 is meshed with the first tooth plate 53 and the second tooth plate 54 respectively. When the rotating component 55 is rotated clockwise, the rotating component 55 will drive the first tooth plate 53 and the second tooth plate 54 to move in opposite directions through the gear 56, providing the prerequisite for subsequent traction operations. The speed limiting component 57 is fixedly installed on the side wall of the inner cavity of the shell 51. Through the mutual cooperation between the rotating component 55 and the speed limiting component 57, the rotation speed of the rotating component 55 can be limited to prevent the medical staff from rotating the rotating component 55 too fast during traction, causing the first tooth plate 53 and the second tooth plate 54 to move in the opposite direction too fast, thereby causing additional damage to the patient's wound. The two connecting rods 42 are fixedly connected to the first tooth plate 53 and the second tooth plate 54 respectively through the connecting member 58, and the connecting member 58 is slidably set in the inner cavity of the give way groove 52. When the first tooth plate 53 and the second tooth plate 54 move in opposite directions, the fastener body 41, the handle 6 and the components on the handle 6 will be driven to move in opposite directions through the connecting member 58 to achieve the traction effect.

[0050] like Figure 4As shown, the rotating assembly 55 includes a rotating shaft 551 that is rotatably mounted on the side wall of the housing 51, and a gear 56 is fixedly mounted on the side wall of the rotating shaft 551. A special-shaped groove 552 is provided inside the rotating shaft 551, and the lower end of the special-shaped groove 552 is communicated with the outside world. A clamping plate 553 is slidably mounted on the vertical section of the inner cavity of the special-shaped groove 552. The side wall of the clamping plate 553 is elastically connected to the side wall of the inner cavity of the special-shaped groove 552 by a spring 554. A through groove 555 is provided on the clamping plate 553. In the initial state, the through groove 555 is in contact with the inner cavity of the special-shaped groove 552. The horizontal section of the cavity is connected, and a slide 556 is slidably installed on the horizontal section of the inner cavity of the special-shaped groove 552. The side wall of the slide 556 is elastically connected to the side wall of the inner cavity of the special-shaped groove 552 by a spring 2 557. A crank 558 is rotatably installed on the side wall of the slide 556. A plurality of slots 559 are also provided inside the rotating shaft 551. A card bead 560 is elastically slidably installed on the top surface of the slide 556. The slot 559 and the card bead 560 can form a snap-fit relationship. A pressure plate 561 is fixedly installed on the end of the slide 556 away from the crank 558.

[0051] like Figure 7 As shown, the speed limiting assembly 57 includes a hollow plate 571 fixedly mounted on the side wall of the inner cavity of the housing 51 , and a plurality of tooth blocks 572 are fixedly mounted on the side wall of the inner cavity of the hollow portion of the hollow plate 571 .

[0052] Specifically, before the pulling operation, many parts are arranged according to Figure 1 , after which the two first retractors 9 are placed on the patient's wound. Since the slide 556 cannot rotate in the horizontal section of the inner cavity of the special-shaped groove 552, the medical staff drives the rotating shaft 551 and the gear 56 to rotate synchronously through the crank 558 and the slide 556. During the rotation, the gear 56 drives the first tooth plate 53 and the second tooth plate 54 to move in opposite directions. During the movement of the first tooth plate 53 and the second tooth plate 54 in opposite directions, the fastener body 41 and the handle 6 are driven in opposite directions through the connecting member 58, thereby driving the two first retractors 9 to move in opposite directions and pulling the patient's wound. Figure 19As shown, in the initial state, the card bead 560 is engaged in the middle card slot 559. Since the card bead 560 is elastically slidably installed on the slide 556, when the appropriate traction distance is reached, the medical staff pulls the crank 558 outward to drive the card bead 560 to retract into the interior of the slide 556. When the card bead 560 reaches the position of the card slot 559 on the right, the card bead 560 will pop outward and be engaged in the card slot 559 on the right to position the slide 556. When the slide 556 is positioned, the raised part of the pressure plate 561 will exert downward pressure on the card plate 553, causing the card plate 553 to extend to the outside of the special-shaped groove 552, so that the card plate 553 forms a card connection relationship with the tooth block 572, thereby fixing the traction distance of the traction device to facilitate subsequent surgery.

[0053] like Figure 4 and Figure 19 As shown, in the initial state, the card bead 560 is engaged in the middle card slot 559. Since the elastic force of the spring 1 554 is relatively small, during the traction process, when the medical staff quickly turns the crank 558, the rotating shaft 551 will also rotate quickly. Under the action of centrifugal force, the card plate 553 will extend to the outside of the special-shaped groove 552, so that the card plate 553 and the tooth block 572 form a card connection relationship, thereby making the slide plate 556 and the crank 558 unable to rotate, and can limit the rotation speed of the rotating shaft 551 to prevent the rotating shaft 551 and the gear 56 from rotating too fast due to uneven force control during the traction process, thereby causing the first tooth plate 53 and the second tooth plate 54 to pull the first retractor 9 on the handle 6 too fast, making it difficult to accurately control the traction distance and force, which can easily cause secondary damage to the patient's wound.

[0054] like Figure 19As shown, during the traction process, when the front section of the traction needs to be pulled quickly, the medical staff pushes the crank 558 inward to drive the card bead 560 to retract into the interior of the slide 556. When the card bead 560 reaches the position of the card slot 559 on the left, the card bead 560 will pop out and be stuck in the card slot 559 on the left to position the slide 556. When the slide 556 is positioned, the arched part of the top surface of the slide 556 exerts pressure on the top surface of the inner cavity of the through groove 555, so that the card plate 553 is retracted toward the interior of the special-shaped groove 552 and will not slide outward under the action of centrifugal force. At this time, the medical staff can quickly turn the crank 558 to achieve rapid traction. After the rear section, when it is necessary to control the traction speed, the medical staff pulls the crank 558 outward so that the card bead 560 is engaged in the middle card slot 559, and the centrifugal force can be used to control the traction speed. When the traction distance is fully reached, the medical staff pulls the crank 558 outward again so that the card bead 560 is engaged in the right card slot 559 to position the slide plate 556. When the slide plate 556 is positioned, the raised part of the pressure plate 561 is used again to generate downward pressure on the card plate 553, so that the card plate 553 extends to the outside of the special-shaped groove 552, so that the card plate 553 forms a card connection relationship with the tooth block 572, thereby fixing the traction distance of the traction device.

[0055] Through the above settings, rapid traction is achieved in the front section of traction, which can overcome the initial resistance of the tissue, save operation time, and improve surgical efficiency; in the middle and rear sections of traction, the centrifugal force during the rotation process can also be used to limit the rotation speed of the rotating shaft 551 and the gear 56, and then limit the traction speed, which can prevent medical staff from causing secondary damage to the patient's wound due to uneven traction force.

[0056] In order to solve the technical problem of affecting the surgical efficiency and causing secondary trauma to the patient's wound when the first retractor 9 is disassembled and disinfected after the traction device has been pulled for a long time, Figures 12-18 As shown, the following preferred technical solutions are provided:

[0057] like Figure 16-Figure 18 As shown, the second hook 20 includes a hook body 201 slidably mounted on the slide rail 1 8, and guide grooves 202 are respectively provided on the two side edges of the bottom surface of the hook body 201. The guide grooves 202 can cooperate with the slide rail 1 8, so that the hook body 201 can slide on the slide rail 1 8. A plurality of arc-shaped connecting plates 203 are fixedly mounted on the side wall of the end of the hook body 201 away from the second handle 30, and a mounting column 207 is fixedly mounted on the bottom surface of the arc-shaped connecting plate 203. The extension component 60 is slidably sleeved on the circumferential outer wall of the mounting column 207. The arc-shaped connecting plate 203 and the mounting column 207 are used to support and limit the extension component 60, as shown in FIG. Figure 13As shown, a limiting groove 204 is provided on the side wall of one end of the hook body 201 close to the second turning handle 30, and a slider 205 is slidably installed in the inner cavity of the limiting groove 204. The side wall of the slider 205 and the side wall of the inner cavity of the limiting groove 204 are elastically connected by a spring 3 206. Through the arrangement of the limiting groove 204 and the extension component 60, the height difference between the second hook 20 and the first hook 9 can be overcome in the process of replacing the first hook 9 with the second hook 20, and a seamless replacement operation can be achieved. The slider 205 is rotatably connected to the second turning handle 30, so that there will be no operating interference between the second turning handle 30 and the slider 205. When the second turning handle 30 is rotated, the hook body 201 can be driven to slide on the slide rail 1 8.

[0058] like Figure 18 As shown, the extension component 60 includes a second claw 601, which is slidably mounted on the circumferential outer wall of the mounting column 207, and the second claw 601 is elastically connected to the mounting column 207 through a fourth spring 602. Since there is a height difference between the second hook 20 and the first hook 9 during the process of replacing the first hook 9 with the second hook 20, a part of the height difference can be compensated by the sliding distance of the second claw 601 on the mounting column 207, and the remaining height difference is compensated by the second limiting groove 204.

[0059] like Figure 14 As shown, mounting groove 1 61 and mounting groove 2 62 are respectively provided on the bottom surface of the inner cavity of the handle 6, and mounting groove 1 61 and mounting groove 2 62 are connected. Mounting groove 3 63 are symmetrically provided on the inner walls on both sides of the inner cavity of mounting groove 1 61, and the inclined plate 50 is slidably installed in the inner cavity of mounting groove 3 63.

[0060] like Figure 12 and Figure 15 As shown, the propulsion assembly 40 includes an outer sleeve 401 slidably mounted inside the handle 6, a long groove 402 is provided on the side wall of the inner cavity of the outer sleeve 401, an inner lining tube 403 is slidably mounted inside the outer sleeve 401, and the inner lining tube 403 forms a limiting relationship with the long groove 402, and the inner lining tube 403 cannot rotate inside the outer sleeve 401, and the inner lining tube 403 and the outer sleeve 401 are elastically connected by a spring 404, as shown in FIG. Figure 14 As shown, one end of the outer sleeve 401 close to the inclined plate 50 is arranged in the inner cavity of the mounting groove 61 to achieve the lifting effect of the inclined plate 50, as shown in FIG. Figure 9 As shown, a mounting plate 405 is fixedly mounted on the end of the inner liner tube 403 , and the mounting plate 405 is threadedly connected to the second handle 30 .

[0061] like Figure 14 and Figure 16As shown, the first hook 9 includes a hook body 91, and guide grooves 92 are respectively provided on the edges of both sides of the bottom surface of the hook body 91. A plurality of claws 93 are fixedly installed on the side wall of the end of the hook body 91 away from the first handle 10. Figure 10 As shown, the pull claw 1 93 and the pull claw 2 601 are staggered, and a limiting groove 94 is provided on the side wall of one end of the pull hook body 91 close to the first turning handle 10. A slider 95 is slidably installed in the inner cavity of the limiting groove 94, and a spring 6 96 is passed between the side wall of the slider 95 and the side wall of the inner cavity of the limiting groove 94.

[0062] Specifically, during the traction process, when the first retractor 9 has been pulled for a long time, it is necessary to use the second retractor 20 to replace the first retractor 9 to reduce the risk of wound infection in the patient. The specific process is as follows: the initial state of the traction device is as follows: Figure 11 and Figure 16 As shown, first rotate the second handle 30 clockwise. Since the second handle 30 is threadedly connected to the side wall of the grip 6, under the action of the thread, the second handle 30 will push the hook body 201 to slide on the slide rail 8 until the hook body 201 is pushed onto the load-bearing plate 81 and the second handle 30 is stopped. At this time, the arc-shaped connecting plate 203 and the extension component 60 are directly above the claw 1 93. Since the claw 1 93 and the claw 2 601 are staggered, under the elastic force of the spring 4 602, the claw 2 601 slides downward on the mounting column 207 to a position at the same height as the claw 1 93. At this time, slightly rotate the second handle 30 counterclockwise to drive the second hook 20 to retract as a whole, so that the claw 2 601 is close to the patient's wound and pulls the patient's wound.

[0063] like Figure 12 and Figure 15As shown, during the clockwise rotation of the second turning handle 30, due to the threaded connection between the mounting plate 405 and the second turning handle 30, the mounting plate 405 will push the inner lining tube 403 to retract into the inner cavity of the outer sleeve 401 and compress the spring five 404 to store energy. Under the elastic force of the spring five 404, the outer sleeve 401 applies an oblique upward force to the inclined plate 50. Since the first retractor 9 is still playing a traction role at this time, the retractor body 91, the slider 95 and the first turning handle 10 are in a taut state, and the inclined plate 50 cannot slide upward to lift the retractor body 91; at this time, when the first turning handle 10 is rotated clockwise again, due to the threaded connection between the first turning handle 10 and the side wall of the grip 6, under the action of the thread, the first turning handle 10 will push the retractor body 91 to shift forward, canceling the traction effect on the patient's wound. At this time, the retractor body When the first hook 9 is released from the inclined plate 50, the guide groove 192 will directly fall on the slide rail 2 7. At this time, continue to rotate the first handle 10 counterclockwise until the first hook 9 is completely received in the inner cavity of the handle 6, thereby completing the withdrawal operation of the first hook 9 and completing the action of replacing the first hook 9 with the second hook 20.

[0064] With a traditional traction device, the first retractor 9 on the traction device must be disassembled and disinfected after continuous traction for more than 4 hours. When the first retractor 9 is disassembled and assembled, it will not only affect the efficiency of the operation, but may also cause secondary trauma to the patient's wound. Through the above arrangement, the present application can achieve seamless replacement between the second retractor 20 and the first retractor 9 without disassembly, which not only improves the efficiency of the operation and reduces the labor intensity of medical staff, but also avoids secondary trauma to the patient's wound during the disassembly and assembly process. Since the retractor claw 1 93 and the retractor claw 2 601 are staggered, the traction position can be slightly staggered and replaced without almost affecting the surgical field, thereby preventing long-term traction at the same position from causing damage to the patient's tissue.

[0065] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0066] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic traction device for head and neck surgery, comprising a mounting frame (1) and a flip rod (2) rotatably mounted on the mounting frame (1), a pair of brackets (3) sleeved on the flip rod (2), and fasteners (4) slidably mounted on the bottom surfaces of the two brackets (3), characterized in that: An expansion assembly (5) is fixedly provided on the two brackets (3), and the expansion assembly (5) is fixedly connected to the fastener (4). A handle (6) is inserted into the fastener (4). A pair of slide rails (8) and a pair of slide rails (7) are symmetrically fixedly installed on the side walls of the inner cavity of the handle (6). The slide rail (8) is arranged above the slide rail (7). A load-bearing plate (81) is fixedly provided at one end of the two slide rails (8). A first hook (9) and a second hook (20) are slidably provided in the inner cavity of the handle (6). The first hook (9) is slidably provided on the side walls of the inner cavity of the slide rail (7). 7), the second hook (20) is slidably arranged on the slide rail (8), the first hook (9) is rotatably provided with a first turning handle (10), the second hook (20) is rotatably provided with a second turning handle (30), the first turning handle (10) and the second turning handle (30) are respectively threadedly connected to the side walls of the handle (6), the second hook (20) is slidably provided with an extension component (60), the interior of the handle (6) is slidably provided with a propulsion component (40), the propulsion component (40) and the second turning handle (30) are threadedly connected, and the interior of the handle (6) is also slidably provided with an inclined plate (50).

2. The laparoscopic traction device for head and neck surgery according to claim 1, characterized in that: The bracket (3) includes a frame body (31) sleeved on the flip rod (2), and a sliding groove (32) is provided on the bottom surface of the frame body (31); The fastener (4) comprises a fastener body (41) slidably mounted in the slide groove (32), a connecting rod (42) is fixedly mounted on the side wall of the fastener body (41), and the connecting rod (42) penetrates and is slidably arranged on the side wall of the slide groove (32).

3. The laparoscopic traction device for head and neck surgery according to claim 2, characterized in that: The expansion assembly (5) includes a shell (51) fixedly mounted on the side wall of the frame (31), a clearance groove (52) is provided on the bottom surface of the shell (51), a first tooth plate (53) and a second tooth plate (54) are slidably mounted on the bottom surface and the top surface of the inner cavity of the shell (51), a rotating assembly (55) is rotatably mounted through the side wall of the shell (51), a gear (56) is fixedly mounted on the side wall of the rotating assembly (55), and the gear (56) is meshedly connected with the first tooth plate (53) and the second tooth plate (54), a speed limiting assembly (57) is fixedly mounted on the side wall of the inner cavity of the shell (51), and two connecting rods (42) are fixedly connected with the first tooth plate (53) and the second tooth plate (54) respectively through a connecting piece (58), and the connecting piece (58) is slidably arranged in the inner cavity of the clearance groove (52).

4. The laparoscopic traction device for head and neck surgery according to claim 3, characterized in that: The rotating assembly (55) includes a rotating shaft (551) that is rotatably mounted on the side wall of the housing (51), a gear (56) that is fixedly mounted on the side wall of the rotating shaft (551), a special-shaped groove (552) is provided inside the rotating shaft (551), the lower end of the special-shaped groove (552) is communicated with the outside world, a clamping plate (553) is slidably mounted on the vertical section of the inner cavity of the special-shaped groove (552), the side wall of the clamping plate (553) and the side wall of the inner cavity of the special-shaped groove (552) are elastically connected by a spring (554), a through groove (555) is provided on the clamping plate (553), and the through groove (555) is in contact with the horizontal section of the inner cavity of the special-shaped groove (552). The sections are connected, a slide plate (556) is slidably installed on the horizontal section of the inner cavity of the special-shaped groove (552), and the side wall of the slide plate (556) is elastically connected to the side wall of the inner cavity of the special-shaped groove (552) through a second spring (557). A crank handle (558) is rotatably installed on the side wall of the slide plate (556), and a plurality of slots (559) are also provided inside the rotating shaft (551). A card bead (560) is elastically slidably installed on the top surface of the slide plate (556), and the slots (559) and the card bead (560) can form a card connection relationship. A pressure plate (561) is fixedly installed on the end of the slide plate (556) away from the crank handle (558).

5. The laparoscopic traction device for head and neck surgery according to claim 3, characterized in that: The speed limiting assembly (57) comprises a hollow plate (571) fixedly mounted on the side wall of the inner cavity of the housing (51), and a plurality of tooth blocks (572) are fixedly mounted on the side wall of the inner cavity of the hollow portion of the hollow plate (571).

6. The laparoscopic traction device for head and neck surgery according to claim 1, characterized in that: The second hook (20) includes a hook body (201) slidably mounted on a slide rail (8), and guide grooves (202) are respectively provided on both side edges of the bottom surface of the hook body (201). A plurality of arc-shaped connecting plates (203) are fixedly mounted on the side wall of the end of the hook body (201) away from the second handle (30), and a mounting column (207) is fixedly mounted on the bottom surface of the arc-shaped connecting plate (203). The extension component (60) is slidably sleeved. On the circumferential outer wall of the mounting column (207), a limiting groove (204) is provided on the side wall of one end of the second hook body (201) close to the second turning handle (30), and a slider (205) is slidably installed in the inner cavity of the limiting groove (204). The side wall of the slider (205) and the side wall of the inner cavity of the limiting groove (204) are elastically connected by a spring (206), and the slider (205) is rotatably connected to the second turning handle (30).

7. The laparoscopic traction device for head and neck surgery according to claim 6, characterized in that: The extension assembly (60) includes a second pull claw (601), which is slidably sleeved on the circumferential outer wall of the mounting column (207), and the second pull claw (601) and the mounting column (207) are elastically connected via a fourth spring (602).

8. The laparoscopic traction device for head and neck surgery according to claim 1, characterized in that: The bottom surface of the inner cavity of the handle (6) is respectively provided with a mounting groove 1 (61) and a mounting groove 2 (62), and the mounting groove 1 (61) and the mounting groove 2 (62) are connected. The inner walls on both sides of the inner cavity of the mounting groove 1 (61) are symmetrically provided with mounting grooves 3 (63), and the inclined plate (50) is slidably installed in the inner cavity of the mounting groove 3 (63).

9. The laparoscopic traction device for head and neck surgery according to claim 8, characterized in that: The propulsion assembly (40) includes an outer sleeve (401) slidably mounted inside the handle (6), a long groove (402) is provided on the side wall of the inner cavity of the outer sleeve (401), an inner lining tube (403) is slidably mounted inside the outer sleeve (401), and the inner lining tube (403) forms a limiting relationship with the long groove (402), and the inner lining tube (403) cannot rotate inside the outer sleeve (401), and the inner lining tube (403) and the outer sleeve (401) are elastically connected by a spring five (404), and one end of the outer sleeve (401) close to the inclined plate (50) is arranged in the inner cavity of the mounting groove one (61), and the end of the inner lining tube (403) is fixedly mounted with a mounting plate (405), and the mounting plate (405) is threadedly connected to the second turning handle (30).

10. The laparoscopic traction device for head and neck surgery according to claim 7, characterized in that: The first hook (9) includes a hook body (91), and guide grooves (92) are respectively provided on the two side edges of the bottom surface of the hook body (91). A plurality of claws (93) are fixedly installed on the side wall of the end of the hook body (91) away from the first rotating handle (10). The claws (93) and the second claws (601) are staggered. A limiting groove (94) is provided on the side wall of the end of the hook body (91) close to the first rotating handle (10). A slider (95) is slidably installed in the inner cavity of the limiting groove (94), and a spring (96) is passed between the side wall of the slider (95) and the side wall of the inner cavity of the limiting groove (94).

Images