Vertebral plate retractor for spinal surgery

Abstract

The utility model discloses a vertebral plate drag hook for spinal surgery, which relates to the technical field of medical instruments and comprises a mounting plate, an observation groove is arranged on the inner wall of the mounting plate, a circular groove is arranged on the inner wall of the mounting plate, an adjusting mechanism is arranged on the outer wall of the mounting plate and comprises a joint shaft, and the joint shaft is connected with the observation groove and the circular groove. Through the arrangement of the threaded rod, the sliding rod can be extruded when the drag hook is inserted, then the sliding rod can extrude the pressure spring, the pressure spring can extrude the sliding rod after the drag hook is inserted into a fixed position, and the sliding rod is pressed by the joint shaft after the drag hook is inserted into the fixed position. Then the sliding rod is inserted into the positioning groove from the circular groove to prevent the drag hook from automatically sliding, then the threaded rod is rotated, the threaded rod drives the fixing block to move when rotating, the multi-applicability is achieved, the proper drag hook can be adjusted according to different bone sizes, the situation that the drag hook is too large to affect an operation is avoided, meanwhile, the drag hook is convenient to replace, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to medical instrument technical field, especially, a kind of lamina retractor for spinal surgery. BACKGROUND

[0002] With the continuous development of spinal surgery technology, such as minimally invasive spinal surgery, complex spinal deformity correction surgery and other complex surgeries are carried out more and more frequently. These surgeries have very high requirements for surgical field, and need to expose the lamina structure carefully. The traditional manual pulling method cannot meet the high-precision surgical field exposure requirements, so the improvement of lamina retractor technology is inevitable.

[0003] The existing device is inconvenient to adjust the appropriate retractor according to the size of the bone during use, and the retractor is too large to affect the operation. When replacing the retractor, it is troublesome to replace, which affects the work efficiency. During use, the angle of the device is not suitable, which makes it difficult to control the position of the retractor, and in severe cases, the device can cause damage to nerves and blood vessels. At the same time, it is inconvenient for the operator to observe the surgical site, therefore we propose a lamina retractor for spinal surgery. SUMMARY

[0004] The utility model discloses a lamina retractor for spinal surgery, which is convenient to adjust the appropriate retractor according to the size of the bone during use through the threaded rod and the slide rod, and solves the problem that the retractor is too large to affect the operation. When replacing the retractor, it is troublesome to replace, which affects the work efficiency. During use, the angle of the device is not suitable, which makes it difficult to control the position of the retractor, and in severe cases, the device can cause damage to nerves and blood vessels. At the same time, it is inconvenient for the operator to observe the surgical site.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The utility model discloses a lamina retractor for spinal surgery, which is convenient to adjust the appropriate retractor according to the size of the bone during use through the threaded rod and the slide rod, and solves the problem that the retractor is too large to affect the operation. When replacing the retractor, it is troublesome to replace, which affects the work efficiency. During use, the angle of the device is not suitable, which makes it difficult to control the position of the retractor, and in severe cases, the device can cause damage to nerves and blood vessels. At the same time, it is inconvenient for the operator to observe the surgical site.

[0007] The adjusting mechanism includes a joint shaft, the outer wall of the joint shaft is fixedly connected with the bottom outer wall of the mounting plate, the outer wall of the joint shaft is rotatably connected with a circular tube, a plurality of clamping grooves are formed in the inner wall of the circular tube, the outer wall of the circular tube is fixedly connected with a fixed plate, the outer wall of the joint shaft is fixedly connected with a U-shaped plate, a limiting groove is formed in the inner wall of the U-shaped plate, a slide rod is slidably connected with the inner wall of the limiting groove, the outer wall of the slide rod is fixedly connected with a spring, a circular hole is formed in the inner wall of the joint shaft, and a mounting mechanism is arranged in the inner wall of the observation slot.

[0008] Further, the mounting mechanism comprises a mounting plate two, the outer wall of the mounting plate two is fixedly connected with the inner wall of the observation slot, and the inner wall of the mounting plate is provided with a sliding groove.

[0009] Further, the inner wall of the sliding groove is slidably connected with a pull hook, and the inner wall of the pull hook is provided with a positioning groove.

[0010] Further, the inner wall of the mounting plate two is provided with a sliding groove two, and the inner wall of the sliding groove two is slidably connected with a sliding rod.

[0011] Further, the outer wall of the sliding rod is fixedly connected with a pressure spring, and the top outer wall of the mounting plate is fixedly connected with a plurality of mounting racks.

[0012] Further, the inner wall of the mounting rack is rotatably connected with a threaded rod, the outer wall of the threaded rod is threadedly connected with a fixed block, and the inner wall of the fixed block is provided with a circular groove two.

[0013] Further, the inner wall of the circular groove two is slidably connected with a guide rod, the outer wall of the guide rod is fixedly connected with the inner wall of the plurality of mounting racks, and the outer wall of one end of the fixed block close to the U-shaped plate is fixedly connected with a connecting rod.

[0014] Further, the outer wall of the connecting rod away from the fixed block is fixedly connected with a fixed rod, the outer wall of the fixed rod is rotatably connected with an L-shaped plate, and the outer wall of one end of the mounting plate close to the U-shaped plate is fixedly connected with a plurality of limiting plates.

[0015] The utility model has the following beneficial effects:

[0016] 1, the utility model discloses a threaded rod is set up, when inserting the pull hook will extrude the sliding rod, then the sliding rod will extrude the pressure spring, when the pull hook inserts to the fixed position, and the pressure spring will extrude the sliding rod, then the sliding rod inserts into the positioning groove from the circular groove, prevents the pull hook from sliding, then rotates the threaded rod, and the fixed block is removed when the threaded rod rotates, reaches multi -application, can adjust appropriate pull hook according to different bone size, avoids the influence of the pull hook to operation, and convenient replacement pull hook improves work efficiency.

[0017] 2, the utility model discloses a sliding rod is set up, and the spring will be moved in the slot when the sliding rod moves, and the fixed plate is rotated after the sliding rod moves out, and the circular pipe is rotated when the fixed plate rotates, and the sliding rod is inserted into the slot from the round hole when the fixed plate rotates to the appropriate angle and then the spring extrudes the sliding rod, improve flexibility, can accurately control the position of the pull hook, avoid the damage of equipment to nerve blood vessel, and make the operating personnel better observe the operation site.

[0018] Of course, any product implementing the present application does not necessarily need to achieve all the advantages mentioned above simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a sectional view of the overall structure of the present application.

[0022] Figure 3 It is a sectional view of the fixed plate structure of the present application.

[0023] Figure 4 It is the present application Figure 3 It is an enlarged view of A in the present application.

[0024] Figure 5 It is a sectional view of the mounting plate structure of the present application.

[0025] In the drawings, the components represented by each reference numeral are listed as follows:

[0026] 1, mounting plate; 101, observation groove; 102, round groove; 2, adjusting mechanism; 201, joint shaft; 202, round pipe; 203, clamping groove; 204, fixed plate; 205, U-shaped plate; 206, limiting groove; 207, sliding rod; 208, spring; 209, round hole; 3, mounting mechanism; 301, sliding groove; 302, pull hook; 303, positioning groove; 304, mounting plate two; 305, sliding groove two; 306, sliding rod; 307, pressure spring; 308, mounting frame; 309, threaded rod; 310, fixed block; 311, round groove two; 312, guide rod; 313, connecting rod; 314, fixed rod; 315, L-shaped plate; 316, limiting plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-5As shown, the utility model is a kind of lamina drag hook for spinal surgery, including mounting plate 1, the inner wall of mounting plate 1 is equipped with observation slot 101, the inner wall of mounting plate 1 is equipped with round groove 102, doctor is conveniently observed the condition of surgery by observation slot 101, the outer wall of mounting plate 1 is provided with adjusting mechanism 2, adjusting mechanism 2 includes joint shaft 201, the outer wall of joint shaft 201 is fixedly connected with the bottom outer wall of mounting plate 1, the outer wall of joint shaft 201 is rotatably connected with round pipe 202, round pipe 202 is in the rotation of joint shaft 201, and displacement condition does not appear when round pipe 202 rotates, keep stable movement, the inner wall of round pipe 202 is equipped with several clamping grooves 203, the outer wall of round pipe 202 is fixedly connected with fixed plate 204, the outer wall of joint shaft 201 is fixedly connected with U-shaped plate 205, the inner wall of U-shaped plate 205 is equipped with limiting slot 206, fixed plate 204 is rotated when round pipe 202 rotates, and the angle of fixed plate 204 and mounting plate 1 is conveniently adjusted, the inner wall of limiting slot 206 is slidably connected with slide rod 207, the outer wall of slide rod 207 is fixedly connected with spring 208, the inner wall of joint shaft 201 is equipped with round hole 209, the inner wall of observation slot 101 is provided with mounting mechanism 3, when fixed plate 204 is adjusted to the appropriate position, spring 208 will extrude pressure spring 307, then slide rod 207 will be inserted into clamping groove 203 from round hole 209, to prevent fixed plate 204 from rotating.

[0029] First pull slide rod 207, when slide rod 207 is pulled, spring 208 is extruded, then spring 208 is removed from clamping groove 203, then fixed plate 204 is rotated, when fixed plate 204 rotates, round pipe 202 is rotated, when fixed plate 204 is rotated to the appropriate position, slide rod 207 is released, then spring 208 extrudes slide rod 207, so that slide rod 207 is inserted into clamping groove 203 from round hole 209, to prevent fixed plate 204 from rotating.

[0030] Mounting mechanism 3 includes mounting plate two 304, the outer wall of mounting plate two 304 is fixedly connected with the inner wall of observation slot 101, the inner wall of mounting plate 1 is equipped with sliding groove 301, the inner wall of sliding groove 301 is slidably connected with drag hook 302, drag hook 302 is slid in sliding groove 301, and deviation condition does not appear when installing drag hook 302, the inner wall of drag hook 302 is equipped with positioning slot 303, the inner wall of mounting plate two 304 is equipped with sliding groove two 305, the inner wall of sliding groove two 305 is slidably connected with sliding rod 306, the outer wall of sliding rod 306 is fixedly connected with pressure spring 307, the top outer wall of mounting plate 1 is fixedly connected with several mounting racks 308, the surface of sliding rod 306 has pressure spring 307, and displacement does not appear when pressure spring 307 is extruded, to ensure the normal use of pressure spring 307.

[0031] In use, the pull hook 302 is inserted into the sliding groove 301, and when the pull hook 302 is inserted, the pull hook 302 will extrude the sliding rod 306, and then the sliding rod 306 will extrude the pressure spring 307, and after the pull hook 302 is installed to the appropriate position, the pressure spring 307 will decompress the sliding rod 306, so that the sliding rod 306 is inserted into the positioning groove 303 from the round groove 102, preventing displacement of the pull hook 302.

[0032] The inner wall of the mounting frame 308 is rotationally connected with a threaded rod 309, the outer wall of the threaded rod 309 is threadedly connected with a fixed block 310, the inner wall of the fixed block 310 is provided with a round groove two 311, the inner wall of the round groove two 311 is slidably connected with a guide rod 312, and when the threaded rod 309 rotates, the fixed block 310 will move, and then the fixed block 310 slides on the guide rod 312, preventing the fixed block 310 from rotating with the threaded rod 309, the outer wall of the guide rod 312 is fixedly connected with the inner walls of the plurality of mounting frames 308, and the end of the outer wall of the fixed block 310 close to the U-shaped plate 205 is fixedly connected with a connecting rod 313, and when the fixed block 310 moves, the connecting rod 313 will move, and then the connecting rod 313 moves with the fixed rod 314, achieving kinetic energy transmission between parts, the end of the outer wall of the connecting rod 313 away from the fixed block 310 is fixedly connected with a fixed rod 314, the outer wall of the fixed rod 314 is rotationally connected with an L plate 315, and the end of the outer wall of the mounting plate 1 close to the U-shaped plate 205 is fixedly connected with a plurality of limiting plates 316, and when the fixed rod 314 moves, the L plate 315 will move, and then the L plate 315 is clamped between the two limiting plates 316, strengthening the fixing of the pull hook 302.

[0033] When the threaded rod 309 rotates, the fixed block 310 will move, and then the fixed block 310 moves with the connecting rod 313, and when the connecting rod 313 moves, the fixed rod 314 will move, and then the fixed rod 314 moves with the L plate 315, and when the L plate 315 moves, it is aligned with the limiting plate 316, and then the L plate 315 is clamped between the two limiting plates 316, strengthening the fixing of the pull hook 302.

[0034] One specific application of the embodiment is:

[0035] When the staff needs to use the device, first insert the pull hook 302 into the sliding groove 301, when inserting the pull hook 302, the sliding rod 306 is extruded, then the sliding rod 306 extrudes the pressure spring 307, when the pull hook 302 is inserted into the fixed position, the pressure spring 307 extrudes the sliding rod 306, then the sliding rod 306 is inserted into the positioning groove 303 from the round groove 102, preventing the pull hook 302 from sliding by itself, then rotate the threaded rod 309, when the threaded rod 309 rotates, the fixed block 310 moves, then the fixed block 310 moves the 3 connecting rods 313, when the connecting rod 313 moves, the fixed rod 314 moves, when the fixed rod 314 moves, the L plate 315 moves, at the same time, the L plate 315 is aligned in the middle of the two limiting plates 316, then the L plate 315 is moved to the middle of the limiting plate 316, strengthening the fixed pull hook 302, when in use, the sliding rod 207 can be pulled, when the sliding rod 207 moves, the spring 208 is extruded, then the sliding rod 207 is moved from the clamping groove 203, after the sliding rod 207 moves out, rotate the fixed plate 204, when the fixed plate 204 rotates, the round pipe 202 rotates, when the fixed plate 204 is rotated to the appropriate angle, the sliding rod 207 is loosened, then the spring 208 extrudes the sliding rod 207, so that the sliding rod 207 is inserted into the clamping groove 203 from the round hole 209, preventing the round pipe 202 and the fixed plate 204 from rotating by themselves.

[0036] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A laminectomy retractor for use in spinal surgery comprising a mounting plate (1) characterised in that: The inner wall of the mounting plate (1) is provided with an observation slot (101), and the outer wall of the mounting plate (1) is provided with an adjusting mechanism (2). The adjusting mechanism (2) comprises an articulated shaft (201), the outer wall of the articulated shaft (201) is fixedly connected with the bottom outer wall of the mounting plate (1), the outer wall of the articulated shaft (201) is rotatably connected with a circular pipe (202), the inner wall of the circular pipe (202) is provided with a plurality of clamping grooves (203), the outer wall of the circular pipe (202) is fixedly connected with a fixed plate (204), the outer wall of the articulated shaft (201) is fixedly connected with a U-shaped plate (205), the inner wall of the U-shaped plate (205) is provided with a limiting groove (206), the inner wall of the limiting groove (206) is slidably connected with a sliding rod (207), the outer wall of the sliding rod (207) is fixedly connected with a spring (208), the inner wall of the articulated shaft (201) is provided with a circular hole (209), and the inner wall of the observation slot (101) is provided with a mounting mechanism (3).

2. The laminectomy retractor according to claim 1, wherein, The mounting mechanism (3) comprises a mounting plate two (304), the outer wall of the mounting plate two (304) is fixedly connected with the inner wall of the observation slot (101), and the inner wall of the mounting plate (1) is provided with a sliding groove (301).

3. The laminectomy retractor of Claim 2, wherein: The inner wall of the sliding groove (301) is slidably connected with a pull hook (302), and the inner wall of the pull hook (302) is provided with a positioning groove (303).

4. The laminectomy retractor of Claim 3, wherein: The inner wall of the mounting plate two (304) is provided with a sliding groove two (305), and the inner wall of the sliding groove two (305) is slidably connected with a sliding rod (306).

5. The laminectomy retractor of Claim 4, wherein: The outer wall of the sliding rod (306) is fixedly connected with a pressure spring (307), and the top outer wall of the mounting plate (1) is fixedly connected with a plurality of mounting frames (308).

6. The laminectomy retractor of Claim 5, wherein: The inner wall of the mounting frame (308) is rotatably connected with a threaded rod (309), the outer wall of the threaded rod (309) is threadedly connected with a fixed block (310), and the inner wall of the fixed block (310) is provided with a circular groove two (311).

7. The laminectomy retractor of Claim 6, wherein: The inner wall of the circular groove two (311) is slidably connected with a guide rod (312), the outer wall of the guide rod (312) is fixedly connected with the inner wall of the plurality of mounting frames (308), and the outer wall of one end of the fixed block (310) close to the U-shaped plate (205) is fixedly connected with a connecting rod (313).

8. The laminectomy retractor of Claim 7, wherein: The outer wall of one end of the connecting rod (313) away from the fixed block (310) is fixedly connected with a fixed rod (314), the outer wall of the fixed rod (314) is rotatably connected with an L-shaped plate (315), and the outer wall of one end of the mounting plate (1) close to the U-shaped plate (205) is fixedly connected with a plurality of limiting plates (316).

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