A retractor device for spinal surgery

Abstract

The application discloses a kind of retraction equipment for spine surgery, belong to surgical operation field.It includes bottom support seat, and the top of bottom support seat is fixedly connected with support frame.The application can realize vertical movement by top transmission plate driving inner connecting rod, the vertical height of retractor can be adjusted, it is convenient to adjust the height of retractor in spine surgery;Two retractors are driven to move horizontally in opposite directions, the position to be retracted can be retracted by retractor, the accuracy and portability of retraction operation are improved, and the situation of artificial continuous holding retractor is reduced;Without using multiple driving sources, position adjustment is carried out in different positions by force transmission, the practicability of overall retractor can be improved;And the horizontal movement of side vertical slide rail is driven by the horizontal movement of gear disc along the surface of top rack, so that the horizontal position of retractor on the surface of support frame can be adjusted, and the portability of adjustment is improved.

Description

Technical Field

[0001] This invention relates to the field of surgery, and more specifically, to a retraction device for spinal surgery. Background Technology

[0002] Spinal surgical retraction devices are primarily used in spinal surgeries to assist in retracting the spine, allowing surgeons to better observe and manipulate the surgical area. These devices play a crucial role in procedures such as discectomy, spinal fusion, and spinal decompression. Their use significantly expands the surgical field, improves the accuracy and safety of the procedure, and reduces the difficulty and physical exertion for the surgeon.

[0003] Existing spinal endoscopes have limited operating fields and operating range, which cannot effectively assist doctors in performing surgery, restricts surgical efficiency, and carries certain surgical risks. Therefore, we propose an expandable nerve retraction protection device for spinal endoscopy.

[0004] Based on the above-mentioned technical problems, existing technologies have also provided some solutions. For example, Chinese Patent No. CN114711848A discloses a spinal endoscopy expandable nerve retraction and protection device. This device improves a new type of spinal endoscopy expandable nerve retraction and protection device by setting a guide device. The operating channel can be expanded by adjusting the size of the operating channel, and the nerve can be retracted by expanding the channel to protect the nerve. It is simple to operate and convenient to use.

[0005] However, in actual production operations, the above-mentioned devices often require medical staff to hold the retraction device by hand to retract the spinal position. Holding it for a long time will affect the accuracy of the retraction position and increase the fatigue of medical staff. It is also difficult to accurately adjust the horizontal and vertical position of the retracted part, resulting in low practicality. Furthermore, the use of the retractor will restrict medical staff from performing other operations, resulting in low surgical efficiency. Summary of the Invention

[0006] In view of the problems in existing technologies, such as the impact of prolonged hand-holding on the accuracy of the retraction position, the increase of fatigue for medical staff, the difficulty in accurately adjusting the horizontal and vertical position of the retraction site, the low practicality, and the limitation of medical staff to perform other operations during the use of the retractor, resulting in low surgical efficiency, the purpose of this invention is to provide a retraction device for spinal surgery.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A retraction device for spinal surgery includes a base support, a support frame fixedly connected to the top of the base support, a side support plate fixedly connected to the top of the support frame, a top fixing plate fixedly connected to the top of the side support plate, and a retraction mechanism provided on one side of the support frame. The retraction mechanism includes a motor body, a side connecting plate, and a threaded column. One side of the side connecting plate is fixedly connected to one side of the support frame, one side of the motor body is fixedly connected to the bottom of the side connecting plate, and the bottom end of the threaded column is fixedly connected to the output shaft of the motor body. A top helical gear disc is provided, with a side helical gear disc meshing with one side of the top helical gear disc. A side transmission rod is fixedly connected to one side of the side helical gear disc. A left threaded rod is fixedly connected to one end of the side transmission rod. An inner connecting rod is fixedly connected to one end of the left threaded rod. A right threaded rod is fixedly connected to one end of the inner connecting rod. A threaded sleeve is threadedly connected to the surface of the right threaded rod and the surface of the left threaded rod. A bottom connecting plate is fixedly connected to the bottom of the threaded sleeve. A bottom fixing block is fixedly connected to the bottom of the bottom connecting plate. A puller is fixedly connected to the bottom of the bottom fixing block.

[0009] Optionally, the inner side of the top helical gear disc is provided with an internal thread surface, and the inner side of the internal thread surface is threadedly connected to the surface of the threaded column.

[0010] Optionally, a vertical adjustment mechanism is provided on one side of the side support plate. The vertical adjustment mechanism includes a top threaded sleeve, a top connecting plate, and a top transmission plate. The top threaded sleeve is threadedly connected to the surface of the threaded column. The top connecting plate is fixedly connected to one side of the top threaded sleeve. The top transmission plate is fixedly connected to one side of the top connecting plate. A side collar is provided at the bottom of the top transmission plate. The inner side of the side collar is slidably connected to the surface of the inner connecting rod.

[0011] Optionally, a side fixing plate is fixedly connected to one side of the top connecting plate, a connecting base plate is fixedly connected to the bottom of the side fixing plate, a connecting sleeve is provided on one side of the connecting base plate, a supporting arc plate is fixedly connected to the top of the connecting sleeve, and an annular rail is provided at the bottom of the top helical gear plate, with the bottom of the annular rail slidably connected to the top of the supporting arc plate.

[0012] Optionally, a horizontal adjustment mechanism is provided on the inner side of the side support plate. The horizontal adjustment mechanism includes an outer connecting rod, a top bearing plate, and a sliding block. A side vertical slide rail is provided on the inner side of the side support plate. A side movable plate is slidably connected to the inner side of the side vertical slide rail. One side of the side movable plate is fixedly connected to one side of the bottom fixed block.

[0013] Optionally, one end of the right-hand threaded rod is fixedly connected to an external connecting rod, the surface of the external connecting rod is fixedly connected to an external helical gear disk, one side of the external helical gear disk is meshed with a horizontal helical gear disk, one side of the horizontal helical gear disk is fixedly connected to a telescopic sleeve rod, one end of the telescopic sleeve rod is fixedly connected to a bottom helical gear disk, one side of the bottom helical gear disk is meshed with a vertical helical gear disk, and one side of the vertical helical gear disk is fixedly connected to a gear disk.

[0014] Optionally, one end of the outer connecting rod is movably connected to a top bearing plate, one side of the top bearing plate is movably connected to a sliding block, and both sides of the sliding block are slidably connected to the inner side of the side vertical slide rail.

[0015] Optionally, a bottom bearing disk is movably connected to one side of the gear disk, an electric actuator is movably connected to one side of the bottom bearing disk, a top rack is fixedly connected to the surface of the support frame, and the surface of the top rack meshes with one side of the gear disk.

[0016] Optionally, a bottom sliding plate is fixedly connected to the bottom of the side vertical slide rail, and a sliding rail is provided on the surface of the support frame, with the inner side of the sliding rail slidably connected to the bottom of the bottom sliding plate.

[0017] Optionally, a support plate is fixedly connected to the inner side of the side vertical slide rail, and a connecting hole is provided on one side of the support plate, the inner side of the connecting hole being movable with the surface of the telescopic sleeve rod.

[0018] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0019] In the above scheme, after the motor body on one side of the side connecting plate is started, the motor body drives the threaded column to rotate. The rotating threaded column is connected to the top threaded sleeve by a thread, which will synchronously drive the top threaded sleeve and the top connecting plate to move vertically. Through the connection of the top transmission plate, the side collar will be driven to move vertically in sync during the vertical movement of the top connecting plate. The inner side of the side collar is movably sleeved with the surface of the inner connecting rod. The inner connecting rod will rotate along the inner side of the side collar and move synchronously with the vertical movement of the side collar. By driving the inner connecting rod to move vertically through the top transmission plate, the vertical height of the retractor can be adjusted, which is convenient for adjusting the height of the retractor during spinal surgery.

[0020] By connecting the side fixing plates, the side fixing plates will move vertically in sync with the vertical movement of the top connecting plate. By connecting the bottom plate, the connecting sleeve will move vertically in sync with the vertical movement of the side fixing plates. By connecting the internal threaded surface with the threaded column, the top helical gear will rotate synchronously with the rotation of the threaded column. The top helical gear will slide with the ring rail through the support arc plate. The top helical gear will move vertically in sync with the vertical movement of the connecting sleeve. There is no need to use multiple drive sources. The position can be adjusted at different positions by force transmission, which can improve the practicality of the overall retractor.

[0021] By connecting the threaded sleeve to the left and right threaded rods, the two bottom connecting plates, bottom fixing blocks, and retractors can be driven to move horizontally when the left and right threaded rods rotate in symmetrical directions. By driving the two retractors to move horizontally in opposite directions, the retractors can be used to perform retraction operations on the positions that need to be retracted, which improves the accuracy and portability of retraction surgery and reduces the need for manual continuous holding of the retractors.

[0022] The telescopic sleeve rod can be movably supported by the support plate through the connecting hole and the movable sleeve. The horizontal movement of the gear disk along the surface of the top rack will drive the side vertical slide rail to move horizontally, thereby adjusting the horizontal position of the retractor on the support frame surface. After adjustment, the gear disk is driven to move by the electric push rod. The moved gear disk drives the vertical helical gear disk to separate from the bottom helical gear disk. At this time, the horizontal position adjustment of the retractor is completed, which improves the portability of adjustment and the practicality of the retractor. Attached Figure Description

[0023] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0024] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom sliding plate structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the threaded column structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the retractor structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom connecting plate structure of the present invention;

[0029] Figure 6This is a schematic diagram of the helical toothed disc structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the helical toothed disc structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the side support plate structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the side vertical slide rail structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the telescopic sleeve structure of the present invention.

[0034] [Figure Labels]

[0035] 1. Bottom support base; 2. Support frame; 3. Side support plates; 4. Top fixing plate;

[0036] 5. Pulling mechanism; 501. Motor body; 502. Side connecting plate; 503. Threaded column; 504. Top helical gear plate; 505. Internal threaded surface; 506. Side helical gear plate; 507. Side transmission rod; 508. Left threaded rod; 509. Internal connecting rod; 5010. Right threaded rod; 5011. Bottom connecting plate; 5012. Threaded sleeve; 5013. Bottom fixing block; 5014. Puller; 5015. Side movable plate;

[0037] 6. Vertical adjustment mechanism; 601. Top threaded sleeve; 602. Top connecting plate; 603. Top transmission plate; 604. Side collar; 605. Side fixing plate; 606. Connecting base plate; 607. Connecting sleeve; 608. Support arc plate; 609. Circular rail;

[0038] 7. Horizontal adjustment mechanism; 701. External connecting rod; 702. Top bearing plate; 703. Sliding block; 704. Side vertical slide rail; 705. External helical gear plate; 706. Horizontal helical gear plate; 707. Telescopic sleeve rod; 708. Bottom helical gear plate; 709. Vertical helical gear plate; 7010. Gear plate; 7011. Top rack; 7012. Bottom bearing plate; 7013. Electric actuator; 7014. Support plate; 7015. Connecting hole; 7016. Bottom sliding plate; 7017. Sliding rail.

[0039] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0042] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0043] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0044] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0045] like Figures 1 to 10As shown, this embodiment of the invention provides a retraction device for spinal surgery, including a base support 1. A support frame 2 is fixedly connected to the top of the base support 1. A side support plate 3 is fixedly connected to the top of the support frame 2. A top fixing plate 4 is fixedly connected to the top of the side support plate 3. A retraction mechanism 5 is provided on one side of the support frame 2. The retraction mechanism 5 includes a motor body 501, a side connecting plate 502, and a threaded column 503. One side of the side connecting plate 502 is fixedly connected to one side of the support frame 2. One side of the motor body 501 is fixedly connected to the bottom of the side connecting plate 502. The bottom end of the threaded column 503 is fixedly connected to the output shaft of the motor body 501. A top helical gear disc 504 is provided on one side of the threaded column 503. A side helical gear disk 506 is meshed with one side of the top helical gear disk 504. A side transmission rod 507 is fixedly connected to one side of the side helical gear disk 506. A left threaded rod 508 is fixedly connected to one end of the side transmission rod 507. An inner connecting rod 509 is fixedly connected to one end of the left threaded rod 508. A right threaded rod 5010 is fixedly connected to one end of the inner connecting rod 509. A threaded sleeve disk 5012 is threadedly connected to the surface of the right threaded rod 5010 and the surface of the left threaded rod 508. A bottom connecting plate 5011 is fixedly connected to the bottom of the threaded sleeve disk 5012. A bottom fixing block 5013 is fixedly connected to the bottom of the bottom connecting plate 5011. A puller 5014 is fixedly connected to the bottom of the bottom fixing block 5013.

[0046] After the motor body 501 on one side of the side connecting plate 502 is started, the motor body 501 will drive the threaded column 503 to rotate. The rotating threaded column 503 is connected to the top threaded sleeve 601 by a thread, which will synchronously drive the top threaded sleeve 601 and the top connecting plate 602 to move vertically. Through the connection of the top transmission plate 603, the side collar 604 will be driven to move vertically during the vertical movement of the top connecting plate 602. The inner side of the side collar 604 is movably sleeved with the surface of the inner connecting rod 509. The inner connecting rod 509 will rotate along the inner side of the side collar 604 and move synchronously with the vertical movement of the side collar 604. The vertical movement of the inner connecting rod 509 driven by the top transmission plate 603 can adjust the vertical height of the retractor 5014, which is convenient for height adjustment of the retractor 5014 during spinal surgery.

[0047] like Figures 4 to 5 As shown, the inner side of the top helical gear disk 504 is provided with an internal thread surface 505, and the inner side of the internal thread surface 505 is threadedly connected to the surface of the threaded post 503.

[0048] The threaded connection between the internal threaded surface 505 and the threaded post 503 will synchronously drive the top helical gear 504 to rotate during the rotation of the threaded post 503. The top helical gear 504 will be slidably connected to the annular rail 609 through the support arc plate 608. During the vertical movement of the connecting sleeve 607, the top helical gear 504 will be driven to move vertically, which can be portable to drive the top helical gear 504 to move vertically and transmit force.

[0049] like Figure 5 As shown, a vertical adjustment mechanism 6 is provided on one side of the side support plate 3. The vertical adjustment mechanism 6 includes a top threaded sleeve 601, a top connecting plate 602, and a top transmission plate 603. The top threaded sleeve 601 is threadedly connected to the surface of the threaded column 503. The top connecting plate 602 is fixedly connected to one side of the top threaded sleeve 601. The top transmission plate 603 is fixedly connected to one side of the top connecting plate 602. A side collar 604 is provided at the bottom of the top transmission plate 603. The inner side of the side collar 604 is slidably connected to the surface of the inner connecting rod 509.

[0050] Through the connection of the side fixing plate 605, the side fixing plate 605 will move vertically in sync with the vertical movement of the top connecting plate 602. Through the connection of the bottom connecting plate 606, the connecting sleeve 607 can move synchronously during the vertical movement of the side fixing plate 605. Through the threaded connection between the internal thread surface 505 and the threaded column 503, the top helical gear 504 will rotate synchronously during the rotation of the threaded column 503. The top helical gear 504 will slide through the support arc plate 608 and the annular rail 609. During the vertical movement of the connecting sleeve 607, the top helical gear 504 will move vertically in sync. By driving the two bottom connecting plates 5011, the bottom fixing block 5013 and the retractor 5014 to move horizontally respectively, and by driving the two retractors 5014 to move horizontally in opposite directions, the retractors 5014 can be used to perform retraction operations on the positions that need to be retracted, improving the accuracy and portability of the retraction surgery and reducing the need for manual continuous holding of the retractor 5014.

[0051] like Figure 5 and Figure 7 As shown, a side fixing plate 605 is fixedly connected to one side of the top connecting plate 602, a connecting base plate 606 is fixedly connected to the bottom of the side fixing plate 605, a connecting sleeve 607 is provided on one side of the connecting base plate 606, a supporting arc plate 608 is fixedly connected to the top of the connecting sleeve 607, and an annular rail 609 is provided at the bottom of the top helical gear plate 504. The bottom of the annular rail 609 is slidably connected to the top of the supporting arc plate 608.

[0052] The top helical gear 504 is slidably connected to the annular rail 609 via the supporting arc plate 608. During the vertical movement of the connecting sleeve 607, the top helical gear 504 is simultaneously moved vertically and rotated. Through the threaded connection between the top helical gear 504 and the side helical gear 506, the side helical gear 506 can be rotated synchronously when the top helical gear 504 rotates. The rotating side helical gear 506 will drive the left threaded rod 508 to rotate. The left threaded rod 508 and the right threaded rod 5010 are connected by the inner connecting rod 509, and the thread directions of the left threaded rod 508 and the right threaded rod 5010 are opposite. Through the threaded sleeve 5012, which is threadedly connected to the left threaded rod 508 and the right threaded rod 5010, when the left threaded rod 508 and the right threaded rod 5010 rotate in a symmetrical direction, the two bottom connecting plates 5011, the bottom fixing block 5013, and the puller 5014 can be driven to move horizontally respectively.

[0053] like Figures 8 to 10 As shown, a horizontal adjustment mechanism 7 is provided on the inner side of the side support plate 3. The horizontal adjustment mechanism 7 includes an outer connecting rod 701, a top bearing plate 702, and a sliding block 703. A side vertical slide rail 704 is provided on the inner side of the side support plate 3. A side movable plate 5015 is slidably connected to the inner side of the side vertical slide rail 704. One side of the side movable plate 5015 is fixedly connected to one side of the bottom fixed block 5013.

[0054] By connecting the side movable plate 5015, the side movable plate 5015 can slide along the inner side of the side vertical slide rail 704 during the vertical movement of the bottom fixed block 5013, which can improve the stability of the vertical movement of the side movable plate 5015 and the bottom fixed block 5013.

[0055] like Figure 10 As shown, one end of the right threaded rod 5010 is fixedly connected to an external connecting rod 701. An external helical gear disk 705 is fixedly connected to the surface of the external connecting rod 701. A horizontal helical gear disk 706 is meshed with one side of the external helical gear disk 705. A telescopic sleeve rod 707 is fixedly connected to one side of the horizontal helical gear disk 706. A bottom helical gear disk 708 is fixedly connected to one end of the telescopic sleeve rod 707. A vertical helical gear disk 709 is meshed with one side of the bottom helical gear disk 708. A gear disk 7010 is fixedly connected to one side of the vertical helical gear disk 709.

[0056] The support frame 2 is supported by the bottom support base 1. After the support frame 2 is moved to the top of the patient's spine, the electric actuator 7013 is activated, driving the bottom bearing plate 7012 to move horizontally. Through the movable connection of the bottom bearing plate 7012, the electric actuator 7013 drives the gear plate 7010 to move horizontally. After the gear plate 7010 moves horizontally, it drives the vertical helical gear plate 709 to move to the bottom of the bottom helical gear plate 708. At this time, the surface of the vertical helical gear plate 709 will mesh with one side of the bottom helical gear plate 708. When the motor body 501 is activated, it drives the right threaded rod 5010 to rotate. Through the connection of the external connecting rod 701, the rotation of the right threaded rod 5010 will drive the external helical gear plate 705 to rotate. Through the meshing of the external helical gear plate 705 with the horizontal helical gear plate 706, it will drive the telescopic sleeve rod 707 to rotate. The rotating telescopic sleeve rod 707 will drive the bottom helical gear plate 701 to rotate. 8. Synchronous rotation is achieved through the meshing of the bottom helical gear disk 708 and the vertical helical gear disk 709. When the vertical helical gear disk 709 rotates, it drives the gear disk 7010 to rotate synchronously. The rotating gear disk 7010 moves along the meshing top rack 7011 and is movably connected to the telescopic sleeve rod 707 through the connecting hole 7015. The telescopic sleeve rod 707 can be movably supported by the support plate 7014. The horizontal movement of the gear disk 7010 along the surface of the top rack 7011 drives the side vertical slide rail 704 to move horizontally, thereby adjusting the horizontal position of the retractor 5014 on the surface of the support frame 2. After adjustment, the gear disk 7010 is driven to move by the electric push rod 7013. After moving, the gear disk 7010 drives the vertical helical gear disk 709 to separate from the bottom helical gear disk 708. At this time, the horizontal position adjustment of the retractor 5014 is completed, which improves the portability of adjustment and the practicality of the retractor.

[0057] like Figure 9 and Figure 10 As shown, one end of the outer connecting rod 701 is movably connected to a top bearing plate 702, one side of the top bearing plate 702 is movably connected to a sliding block 703, and both sides of the sliding block 703 are slidably connected to the inner side of the side vertical slide rail 704.

[0058] When the rotation of the threaded column 503 drives the inner connecting rod 509 to move vertically and adjust the vertical height of the puller 5014, the outer connecting rod 701 will simultaneously drive the sliding block 703 to move vertically. By sliding the sliding block 703 along the inner side of the side vertical slide rail 704, the stability of the vertical helical gear plate 709 during vertical movement can be improved.

[0059] like Figure 10As shown, a bottom bearing disk 7012 is movably connected to one side of the gear disk 7010, an electric actuator 7013 is movably connected to one side of the bottom bearing disk 7012, and a top rack 7011 is fixedly connected to the surface of the support frame 2. The surface of the top rack 7011 meshes with one side of the gear disk 7010.

[0060] The horizontal movement of the gear disk 7010 along the surface of the top rack 7011 causes the side vertical slide rail 704 to move horizontally, thereby adjusting the horizontal position of the retractor 5014 on the surface of the support frame 2. After adjustment, the gear disk 7010 is driven to move by the electric push rod 7013. The moved gear disk 7010 drives the vertical helical gear disk 709 to separate from the bottom helical gear disk 708. At this time, the horizontal position adjustment of the retractor 5014 is completed, which improves the portability of adjustment and the practicality of the retractor.

[0061] like Figure 8 and Figure 9 As shown, a bottom sliding plate 7016 is fixedly connected to the bottom of the side vertical slide rail 704, and a sliding rail 7017 is provided on the surface of the support frame 2. The inner side of the sliding rail 7017 is slidably connected to the bottom of the bottom sliding plate 7016.

[0062] By opening the sliding rail 7017, the bottom sliding plate 7016 of the side support plate 3 can be driven to slide horizontally along the surface of the sliding rail 7017 during the horizontal movement of the side support plate 3, which can improve the stability of the horizontal movement of the side support plate 3 and improve the accuracy of the movement of the side support plate 3.

[0063] like Figure 10 As shown, a support plate 7014 is fixedly connected to the inner side of the side vertical slide rail 704. A connecting hole 7015 is provided on one side of the support plate 7014. The inner side of the connecting hole 7015 is movable with the surface of the telescopic sleeve 707.

[0064] The telescopic sleeve 707 is movably connected to the connecting hole 7015, and the telescopic sleeve 707 can be movably supported by the support plate 7014. The horizontal movement of the gear disk 7010 along the surface of the top rack 7011 will drive the side vertical slide rail 704 to move horizontally, thereby adjusting the horizontal position of the puller 5014 on the surface of the support frame 2.

[0065] The working process provided by this invention is as follows:

[0066] First, after the motor body 501 on one side of the side connecting plate 502 is started, the motor body 501 will drive the threaded column 503 to rotate. The rotating threaded column 503 is connected to the top threaded sleeve 601 by a thread, which will synchronously drive the top threaded sleeve 601 and the top connecting plate 602 to move vertically. Through the connection of the top transmission plate 603, the side collar 604 will be driven to move vertically during the vertical movement of the top connecting plate 602. The inner side of the side collar 604 is movably sleeved with the surface of the inner connecting rod 509. The inner connecting rod 509 will rotate along the inner side of the side collar 604 and move synchronously with the vertical movement of the side collar 604. The vertical movement of the inner connecting rod 509 driven by the top transmission plate 603 can adjust the vertical height of the retractor 5014, which is convenient for height adjustment of the retractor 5014 during spinal surgery.

[0067] When using the retractor 5014, first lower its vertical height. Through the connection of the side fixing plate 605, the top connecting plate 602 will move vertically, simultaneously driving the side fixing plate 605 to move vertically. Through the connection of the bottom connecting plate 606, the connecting sleeve 607 will move synchronously during the vertical movement of the side fixing plate 605. Through the threaded connection between the internal thread surface 505 and the threaded post 503, the top helical gear 504 will rotate synchronously during the rotation of the threaded post 503. The top helical gear 504 will slide through the support arc plate 608 and the annular rail 609. During the vertical movement of the connecting sleeve 607, the top helical gear 504 will move vertically and rotate. Through the threaded connection between the top helical gear 504 and the side helical gear 506, the top helical gear 504 will rotate synchronously. 04 When rotating, it drives the lateral helical gear disk 506 to rotate synchronously. The rotating lateral helical gear disk 506 will drive the left threaded rod 508 to rotate. The left threaded rod 508 and the right threaded rod 5010 are connected by the inner connecting rod 509. The thread directions of the left threaded rod 508 and the right threaded rod 5010 are opposite. The threaded sleeve disk 5012 is threadedly connected to the left threaded rod 508 and the right threaded rod 5010. When the left threaded rod 508 and the right threaded rod 5010 rotate in a symmetrical direction, the two bottom connecting plates 5011, the bottom fixing block 5013 and the retractor 5014 can be driven to move horizontally respectively. By driving the two retractors 5014 to move horizontally in opposite directions, the retractors 5014 can be used to perform retraction operations on the positions that need to be retracted, which improves the accuracy and portability of the retraction surgery and reduces the need for manual continuous holding of the retractor 5014.

[0068] Before using the retractor 5014, the bottom support 1 is first placed on the operating table. The bottom support 1 supports the support frame 2. After the support frame 2 is moved to the top of the patient's spine, the electric actuator 7013 is activated. The electric actuator 7013 drives the bottom bearing plate 7012 to move horizontally. Through the movable connection of the bottom bearing plate 7012, the electric actuator 7013 drives the gear plate 7010 to move horizontally. After the gear plate 7010 moves horizontally, it drives the vertical helical gear plate 709 to move to the bottom of the bottom helical gear plate 708. At this time, the surface of the vertical helical gear plate 709 will mesh with one side of the bottom helical gear plate 708. When the motor body 501 is activated, it drives the right threaded rod 5010 to rotate. Through the connection of the external connecting rod 701, the rotation of the right threaded rod 5010 will drive the external helical gear plate 705 to rotate. Through the meshing of the external helical gear plate 705 with the horizontal helical gear plate 706, the telescopic sleeve rod 707 will rotate. The telescopic sleeve 707 drives the bottom helical gear plate 708 to rotate synchronously. Through the meshing of the bottom helical gear plate 708 and the vertical helical gear plate 709, the vertical helical gear plate 709 rotates, driving the gear plate 7010 to rotate synchronously. The rotating gear plate 7010 moves along the meshing top rack 7011 and is movably connected to the telescopic sleeve 707 through the connecting hole 7015. The telescopic sleeve 707 can be movably supported by the support plate 7014. The horizontal movement of the gear plate 7010 along the surface of the top rack 7011 drives the side vertical slide rail 704 to move horizontally, thereby adjusting the horizontal position of the retractor 5014 on the surface of the support frame 2. After adjustment, the gear plate 7010 is driven to move by the electric push rod 7013. The moved gear plate 7010 drives the vertical helical gear plate 709 to separate from the bottom helical gear plate 708. At this time, the horizontal position adjustment of the retractor 5014 is completed, which improves the portability of adjustment and the practicality of the retractor.

[0069] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0070] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A retraction device for spinal surgery, comprising a base support, characterized in that: A support frame is fixedly connected to the top of the bottom support base, a side support plate is fixedly connected to the top of the support frame, a top fixing plate is fixedly connected to the top of the side support plate, a pulling mechanism is provided on one side of the support frame, the pulling mechanism includes a motor body, a side connecting plate and a threaded column, one side of the side connecting plate is fixedly connected to one side of the support frame, one side of the motor body is fixedly connected to the bottom of the side connecting plate, the bottom end of the threaded column is fixedly connected to the output shaft of the motor body, a top helical gear is provided on one side of the threaded column, and a side helical gear is meshed with one side of the top helical gear. A side drive rod is fixedly connected to one side of the helical gear disc. A left threaded rod is fixedly connected to one end of the side drive rod. An inner connecting rod is fixedly connected to one end of the left threaded rod. A right threaded rod is fixedly connected to one end of the inner connecting rod. A threaded sleeve is threadedly connected to the surface of the right threaded rod and the surface of the left threaded rod. A bottom connecting plate is fixedly connected to the bottom of the threaded sleeve. A bottom fixing block is fixedly connected to the bottom of the bottom connecting plate. A puller is fixedly connected to the bottom of the bottom fixing block. The inner side of the top helical gear disk is provided with an internal thread surface, and the inner side of the internal thread surface is threadedly connected to the surface of the threaded column. A vertical adjustment mechanism is provided on one side of the side support plate. The vertical adjustment mechanism includes a top threaded sleeve, a top connecting plate, and a top transmission plate. The top threaded sleeve is threadedly connected to the surface of the threaded column. The top connecting plate is fixedly connected to one side of the top threaded sleeve. The top transmission plate is fixedly connected to one side of the top connecting plate. A side collar is provided at the bottom of the top transmission plate. The inner side of the side collar is slidably connected to the surface of the inner connecting rod. A side fixing plate is fixedly connected to one side of the top connecting plate, a connecting base plate is fixedly connected to the bottom of the side fixing plate, a connecting sleeve is provided on one side of the connecting base plate, a supporting arc plate is fixedly connected to the top of the connecting sleeve, and an annular rail is provided at the bottom of the top helical gear plate, with the bottom of the annular rail slidably connected to the top of the supporting arc plate. The left thread rod has the opposite thread direction to the right thread rod.

2. The retraction device for spinal surgery according to claim 1, characterized in that, The inner side of the side support plate is provided with a horizontal adjustment mechanism, which includes an outer connecting rod, a top bearing plate and a sliding block. The inner side of the side support plate is provided with a side vertical slide rail, and the inner side of the side vertical slide rail is slidably connected to a side movable plate. One side of the side movable plate is fixedly connected to one side of the bottom fixed block.

3. The retraction device for spinal surgery according to claim 1, characterized in that, One end of the right-hand threaded rod is fixedly connected to an external connecting rod, and an external helical gear plate is fixedly connected to the surface of the external connecting rod. A horizontal helical gear plate is meshed with one side of the external helical gear plate, and a telescopic sleeve rod is fixedly connected to one side of the horizontal helical gear plate. A bottom helical gear plate is fixedly connected to one end of the telescopic sleeve rod, and a vertical helical gear plate is meshed with one side of the bottom helical gear plate. A gear plate is fixedly connected to one side of the vertical helical gear plate.

4. The retraction device for spinal surgery according to claim 3, characterized in that, One end of the external connecting rod is movably connected to a top bearing plate, and one side of the top bearing plate is movably connected to a sliding block. The two sides of the sliding block are slidably connected to the inner side of the side vertical slide rail.

5. The retraction device for spinal surgery according to claim 4, characterized in that, A bottom bearing disk is movably connected to one side of the gear disk, and an electric actuator is movably connected to one side of the bottom bearing disk. A top rack is fixedly connected to the surface of the support frame, and the surface of the top rack meshes with one side of the gear disk.

6. The retraction device for spinal surgery according to claim 5, characterized in that, The bottom of the side vertical slide rail is fixedly connected to a bottom sliding plate, and the surface of the support frame is provided with a slide rail, the inner side of which is slidably connected to the bottom of the bottom sliding plate.

7. The retraction device for spinal surgery according to claim 6, characterized in that, A support plate is fixedly connected to the inner side of the side vertical slide rail. A connecting hole is provided on one side of the support plate, and the inner side of the connecting hole is movable with the surface of the telescopic sleeve rod.

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