A distractor for hemilaminoplasty of the spine

Abstract

The utility model discloses a kind of struts for spinal half cone plate operation, including support, two-way screw rod is penetratedly connected in the inside of support, and the outside of two-way screw rod both ends is all set with movable plate, and the below of two movable plate is provided with support block;The opposite face of two movable plate is all installed with illuminating lamp, and the inside of two movable plate is all provided with mounting hole, and the inside of mounting hole is insertedly connected with mounting block.The struts for spinal half cone plate operation, by rotating two-way screw rod, so that two support blocks opposite movement, can open up spinal cone gap, and by setting illuminating lamp, can ensure that doctor can clearly see the relationship of pathological change site and surrounding tissue, and by opposite pulling two adhering blocks, make it separate with limit groove, release the location of mounting block, and pull mounting block, so that illuminating lamp can be quickly disassembled, avoid subsequent high temperature disinfection high temperature environment cause illuminating lamp damage.

Description

Technical Field

[0001] This utility model relates to the field of surgical instrument technology, specifically a spreader used in spinal hemi-pisiform surgery. Background Technology

[0002] Hemilaminar surgery is a surgical procedure that removes only a portion of the vertebral lamina while preserving part of the lamina structure. During hemilaminar surgery, a spreader is used to enlarge and stabilize the intervertebral foramen, thereby increasing the intervertebral space and facilitating the diagnosis and treatment of spinal diseases.

[0003] Drawback: Existing surgical retractors typically do not illuminate the surgical site during operation. In poor lighting conditions, surgical procedures may become difficult, requiring the use of external lighting. This approach, to some extent, affects the efficiency of the surgery.

[0004] To address the aforementioned shortcomings, existing technology (Chinese patent application number: 202420380833.4, authorized announcement date: 2024-11-22) discloses a surgical retractor. Equipped with an LED light and a support rod, the retractor illuminates the surgical site. When illuminating the surgical site, the LED light produces light, and rotating a knob causes the support rod to rotate within a bearing. This, in turn, adjusts the angle of the LED light via a connecting ring, thus providing supplemental lighting to the surgical site. This eliminates the need for external lighting during surgery, improving the practicality of the surgical retractor.

[0005] Existing technology uses LED lights installed on the retractor to illuminate the surgical site. However, since the LED lights are fixed to the retractor, they are inconvenient to remove later. This results in the lighting mechanism being damaged by the high temperature environment when the retractor is sterilized at high temperatures.

[0006] Therefore, we proposed that a spreader used in spinal hemi-piezinctomy can effectively solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a retractor for spinal hemi-pisiform surgery, in order to solve the problem mentioned in the background art that the LED lighting lamp is fixed on the retractor, making it inconvenient to remove later, which leads to damage to the lighting mechanism in the high-temperature environment during high-temperature sterilization of the retractor.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a spreader for spinal hemiconical laminar surgery, comprising a bracket, wherein a bidirectional screw is connected through the inside of the bracket, and movable plates are sleeved on the outer sides of both ends of the bidirectional screw, and a support block is provided below the two movable plates;

[0009] Lighting lamps are installed on the opposite sides of the two movable plates, and mounting holes are opened inside the two movable plates, with mounting blocks inserted into the mounting holes;

[0010] The mounting blocks are fixedly connected to the sides of each mounting block. The lighting lamp is rotatably connected between the two mounting plates via a rotating rod. The movable plate has a fitting block symmetrically connected to the left side about the center point of the mounting hole. Limiting grooves are provided at the top and bottom of the left side of the mounting block.

[0011] Preferably, the bidirectional lead screw is connected to the bracket by a bearing, the threads on the outer sides of the two ends of the bidirectional lead screw have opposite directions, the two movable plates are connected to the bidirectional lead screw by threads, and the tops of the two movable plates are slidably connected to the inner side of the bracket.

[0012] Preferably, the bonding block is arranged in an inverted "L" shape, and the end sides of both the bonding block and the mounting block are inclined. The right side of the bonding block is slidably connected to the side of the movable plate by a slider, and a first spring is installed between the end of the slider and the inner wall of the movable plate. The position of the bonding block corresponds to that of the limiting groove.

[0013] Preferably, the bottom of the rotating rod penetrates the interior of the lower fixed plate, and the interior of the lower fixed plate is provided with toothed grooves at equal angles. Pads are provided at equal angles on the outer side of the lower end of the rotating rod, and a second spring is installed between the end sides of the multiple pads and the outer side of the rotating rod. A vertical rod is connected to the interior of the rotating rod, and multiple traction ropes are wound and connected to the outer side of the vertical rod.

[0014] Preferably, the plurality of pawls are hinged to the outside of the rotating rod, and the pawls are engaged with the tooth grooves. The end of the traction rope away from the vertical rod is fixed to the end side of the pawl. The top of the vertical rod extends out of the upper surface of the upper fixing plate, and the vertical rod is rotatably connected to the rotating rod and the fixing plate. A spiral spring is installed between the outside of the vertical rod and the inner wall of the upper fixing plate.

[0015] Preferably, the tops of the two support blocks are fixedly connected to adjustment plates, and the opposite sides of the two adjustment plates are provided with threaded holes at equal intervals. The movable plate is internally connected to a threaded rod, and the bottom of the movable plate is provided with a deep groove.

[0016] Preferably, one end of the threaded rod extends out of the side of the movable plate, and the threaded rod, the movable plate, and the threaded hole are all threadedly connected, and the positions of the threaded rod and the threaded hole correspond to each other, and the adjusting plate and the deep groove are slidably connected.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the retractor used in spinal hemi-piezal surgery adopts a novel structural design, the specific details of which are as follows:

[0018] (1) By rotating the bidirectional screw, the two support blocks move in opposite directions, which can open the intervertebral space of the spine. Then, the lighting can help doctors to more accurately judge the scope and depth of resection. At the same time, when dealing with diseased tissue, the lighting function can ensure that doctors can clearly see the relationship between the lesion and the surrounding tissue.

[0019] Furthermore, by pulling the two mating blocks in opposite directions to separate them from the limiting groove, the limiting of the mounting block is released, and the mounting block is pulled, so that the lighting lamp can be quickly removed, avoiding damage to the lighting lamp caused by the high temperature environment of subsequent high-temperature disinfection.

[0020] (2) When it is necessary to adjust the angle of the lighting lamp, simply rotate the vertical rod to make it wind up multiple traction ropes, and use the traction ropes to pull the pawl to rotate, thereby releasing the limit on the rotating rod. At this time, the lighting lamp can be rotated forward or backward, thereby adjusting the illumination angle of the lighting lamp, so that the doctor can adjust the direction and intensity of the light according to the needs of the surgery, further improving the clarity and comfort of the surgical field.

[0021] Furthermore, after the lighting is adjusted, the vertical rod is released, causing it to rotate in the opposite direction under the stored force of the spiral spring. At the same time, the pawl is reset under the elastic force of the second spring and engages in the corresponding tooth groove, thereby limiting and fixing the rotated lighting.

[0022] (3) Rotate the threaded rod in the opposite direction to separate it from the corresponding threaded hole, and pull down or push the support block up. Then rotate the threaded rod in the forward direction to screw it into the corresponding threaded hole. This can limit the movement of the support block and thus adjust the length of the support block to meet different expansion requirements. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main cross-section of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the bracket, movable plate, and support block of this utility model;

[0025] Figure 3 This is a schematic diagram of the rotating structure of the lighting lamp of this utility model;

[0026] Figure 4This is a three-dimensional structural diagram of the mounting block, fixing plate, and lighting lamp of this utility model;

[0027] Figure 5 This is a top-section schematic diagram of the vertical rod and fixing plate of this utility model;

[0028] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 7 This utility model Figure 1 Enlarged structural diagram at point B.

[0030] In the diagram: 1. Bracket; 2. Two-way lead screw; 3. Movable plate; 4. Support block; 5. Adjusting plate; 6. Lighting lamp; 7. Rotating rod; 8. Pawl; 9. Mounting block; 10. Fitting block; 11. Mounting hole; 12. Limiting groove; 13. Vertical rod; 14. Tooth groove; 15. Traction rope; 16. Threaded rod; 17. Threaded hole; 18. Fixing plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-7 The present invention provides the following technical solution: a spreader for spinal hemiconical plate surgery;

[0033] Example 1: To address the problem in the prior art where the LED lighting lamp 6 is fixed to the expander, making subsequent disassembly inconvenient and causing damage to the lighting mechanism during high-temperature sterilization of the expander, the following solution is disclosed. Please refer to the following for details. Figures 1-4 and Figure 6 As shown, the system includes a bracket 1, with a bidirectional lead screw 2 running through the inside of the bracket 1. Movable plates 3 are fitted on the outer sides of both ends of the bidirectional lead screw 2. The bidirectional lead screw 2 is connected to the bracket 1 by a bearing. The threads on the outer sides of both ends of the bidirectional lead screw 2 have opposite directions. The two movable plates 3 are threadedly connected to the bidirectional lead screw 2, and the tops of the two movable plates 3 are slidably connected to the inner side of the bracket 1. Support blocks 4 are provided below the two movable plates 3.

[0034] Lighting lamps 6 are installed on the opposite sides of the two movable plates 3. Mounting holes 11 are opened inside the two movable plates 3, and mounting blocks 9 are inserted into the mounting holes 11. Fixing plates 18 are fixedly connected to the sides of the mounting blocks 9. The lighting lamps 6 are rotatably connected between the two fixing plates 18 through the rotating rod 7. Adhesive blocks 10 are symmetrically connected to the left side of the movable plate 3 about the center point of the mounting holes 11. Limiting grooves 12 are opened at the top and bottom of the left side of the mounting blocks 9. The adhesive blocks 10 are set in an inverted "L" shape, and the end sides of the adhesive blocks 10 and the mounting blocks 9 are inclined. The right side of the adhesive blocks 10 is slidably connected to the side of the movable plate 3 through a slider, and a first spring is installed between the end of the slider and the inner wall of the movable plate 3. The positions of the adhesive blocks 10 and the limiting grooves 12 correspond to each other.

[0035] The surgeon inserts the retractor into the intervertebral space and manually rotates the bidirectional screw 2 in the forward direction, causing the two support blocks 4 to move in opposite directions. This opens the intervertebral space, allowing the surgeon to perform further surgical procedures within the opened space. The lighting 6 is then turned on, which helps the surgeon more accurately determine the extent and depth of resection. Simultaneously, when dealing with diseased tissue, the lighting function ensures the surgeon can clearly see the relationship between the lesion and surrounding tissues. After the surgery, the surgeon pulls the two abutment blocks 10 in opposite directions (the first spring is in a compressed state). (In the first position), separate the mounting block 9 from the limiting groove 12, release the limiting of the mounting block 9, and then pull the lighting lamp 6 to separate the mounting block 9 from the mounting hole 11, so that the lighting lamp 6 can be quickly removed, avoiding damage to the lighting lamp 6 caused by the high temperature environment of subsequent high temperature disinfection. Then, when the lighting lamp 6 needs to be installed, insert the mounting block 9 into the mounting hole 11 and squeeze the two adhesive blocks 10 to make them move in opposite directions. Then, the two adhesive blocks 10 are reset under the elastic force of the first spring and are locked into the corresponding limiting groove 12, which can limit the mounting block 9, thereby completing the installation of the lighting lamp 6.

[0036] Example 2: Unlike Example 1, this example uses a rotating rod 7 to adjust the illumination angle of the lighting lamp 6. See details... Figure 1 and Figures 3-6As shown, the bottom of the rotating rod 7 penetrates the interior of the lower fixed plate 18. The interior of the lower fixed plate 18 is provided with toothed grooves 14 at equal angles. Pads 8 are provided at equal angles on the outer side of the lower end of the rotating rod 7. A second spring is installed between the end sides of multiple pads 8 and the outer side of the rotating rod 7. A vertical rod 13 is connected inside the rotating rod 7. Multiple traction ropes 15 are wound around the outer side of the vertical rod 13. Multiple pads 8 are hinged to the outer side of the rotating rod 7. The pads 8 and the toothed grooves 14 are meshed. The end of the traction rope 15 away from the vertical rod 13 is fixed to the end side of the pad 8. The top of the vertical rod 13 extends out of the upper surface of the upper fixed plate 18. The vertical rod 13 is rotatably connected to the rotating rod 7 and the fixed plate 18. A spiral spring is installed between the outer side of the vertical rod 13 and the inner wall of the upper fixed plate 18.

[0037] When the angle of the lighting lamp 6 needs to be adjusted, simply rotate the vertical rod 13 to wind up the multiple traction ropes 15, and use the traction ropes 15 to pull the pawl 8 to rotate, thereby releasing the limit on the rotating rod 7. At this time, the lighting lamp 6 can be rotated forward or backward, thereby adjusting the illumination angle of the lighting lamp 6. This allows the doctor to adjust the direction and intensity of the light according to the needs of the surgery, further improving the clarity and comfort of the surgical field. After the lighting lamp 6 is adjusted, release the vertical rod 13, allowing it to rotate in the opposite direction under the stored force of the spiral spring. At the same time, the pawl 8 resets under the elastic force of the second spring and engages in the corresponding tooth groove 14, thereby limiting and fixing the rotated lighting lamp 6.

[0038] Example 3: Unlike Example 2, this example uses an adjusting plate 5 to adjust the length of the support block 4, allowing it to meet different expansion requirements. See details... Figure 1 , Figure 2 and Figure 7 As shown, the tops of the two support blocks 4 are fixedly connected to the adjustment plates 5, and the opposite sides of the two adjustment plates 5 are provided with threaded holes 17 at equal intervals. The interior of the movable plate 3 is connected to a threaded rod 16, and the bottom of the movable plate 3 is provided with a deep groove. One end of the threaded rod 16 extends out of the side of the movable plate 3, and the threaded rod 16 is threadedly connected to the movable plate 3 and the threaded holes 17. The positions of the threaded rod 16 and the threaded holes 17 are corresponding. The adjustment plate 5 and the deep groove are slidably connected.

[0039] When the length of the support block 4 needs to be adjusted, the doctor manually rotates the threaded rod 16 in the reverse direction to separate it from the corresponding threaded hole 17, and pulls down or pushes the support block 4 upward. Then, the doctor rotates the threaded rod 16 in the forward direction to screw it into the corresponding threaded hole 17. This can limit the movement of the support block 4, thereby adjusting the length of the support block 4 to meet different expansion requirements.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spreader for spinal hemi-pisiform surgery, comprising a support (1), wherein a bidirectional screw (2) is connected through the interior of the support (1), and movable plates (3) are sleeved on the outer sides of both ends of the bidirectional screw (2), and a support block (4) is provided below the two movable plates (3). Its features are, Lighting lamps (6) are installed on the opposite sides of the two movable plates (3), and mounting holes (11) are opened inside the two movable plates (3), and mounting blocks (9) are inserted and connected inside the mounting holes (11); The mounting block (9) is fixedly connected to a fixing plate (18) on its side. The lighting lamp (6) is rotatably connected between the two fixing plates (18) via a rotating rod (7). The left side of the movable plate (3) is symmetrically connected to a fitting block (10) about the center point of the mounting hole (11). The top and bottom of the left side of the mounting block (9) are provided with limit grooves (12).

2. The retractor for spinal hemi-piezal surgery according to claim 1, characterized in that: The bidirectional lead screw (2) is connected to the bracket (1) by a bearing. The threads on the outer sides of the two ends of the bidirectional lead screw (2) are opposite. The two movable plates (3) are connected to the bidirectional lead screw (2) by a thread, and the tops of the two movable plates (3) are connected to the inner side of the bracket (1) by a sliding connection.

3. A retractor for spinal hemi-pisiform surgery according to claim 1, characterized in that: The bonding block (10) is set in an inverted "L" shape, and the end sides of the bonding block (10) and the mounting block (9) are both inclined. The right side of the bonding block (10) is slidably connected to the side of the movable plate (3) by a slider, and a first spring is installed between the end of the slider and the inner wall of the movable plate (3). The position of the bonding block (10) corresponds to that of the limiting groove (12).

4. A retractor for spinal hemi-piezoma resection surgery according to claim 1, characterized in that: The bottom of the rotating rod (7) penetrates the interior of the lower fixing plate (18). The interior of the lower fixing plate (18) is provided with toothed grooves (14) at equal angles. Pads (8) are provided at equal angles on the outer side of the lower end of the rotating rod (7). A second spring is installed between the end side of the multiple pads (8) and the outer side of the rotating rod (7). A vertical rod (13) is connected inside the rotating rod (7), and multiple traction ropes (15) are wound around the outer side of the vertical rod (13).

5. A retractor for spinal hemi-pisiform surgery according to claim 4, characterized in that: Multiple pawls (8) are hinged to the outside of the rotating rod (7), and the pawls (8) are engaged with the tooth groove (14). The end of the traction rope (15) away from the vertical rod (13) is fixed to the end side of the pawl (8). The top of the vertical rod (13) extends out of the upper surface of the upper fixing plate (18), and the vertical rod (13) is rotatably connected to the rotating rod (7) and the fixing plate (18). A spiral spring is installed between the outside of the vertical rod (13) and the inner wall of the upper fixing plate (18).

6. A retractor for spinal hemi-piezal surgery according to claim 1, characterized in that: The tops of the two support blocks (4) are fixedly connected to adjustment plates (5), and the opposite sides of the two adjustment plates (5) are provided with threaded holes (17) at equal intervals. The interior of the movable plate (3) is connected to a threaded rod (16), and the bottom of the movable plate (3) is provided with a deep groove.

7. A retractor for spinal hemi-piezoma resection surgery according to claim 6, characterized in that: One end of the threaded rod (16) extends out of the side of the movable plate (3), and the threaded rod (16) is threadedly connected to the movable plate (3) and the threaded hole (17). The positions of the threaded rod (16) and the threaded hole (17) are corresponding. The adjusting plate (5) is slidably connected to the deep groove.

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