Retraction device for spinal surgery

Abstract

The invention relates to the technical field of medical instruments, in particular to a spinal surgery retractor which comprises a retractor mechanism, the retractor mechanism comprises a first retractor structure and a second retractor structure, the first retractor structure comprises a first retractor part and a second retractor part, and the second retractor part is telescopically assembled on the first retractor part. The first retracting part and the second retracting part are used for being matched to retract the tissue, and when the first retracting part and the second retracting part are used for being matched to retract the tissue, the second retracting structure is assembled on the first retracting part and the second retracting part and used for retracting the spine bone or the tissue. The invention relates to a spine retractor, in particular to a spine retractor, which aims at not only retracting surface tissues, but also retracting deep muscles during a spine operation, and simultaneously retracting spine bones during tissue retraction, is convenient to use, and is suitable for spine retraction at different positions.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a retraction device for spinal surgery. Background Technology

[0002] Orthopedics is one of the most common departments in major hospitals, primarily used to treat various bone-related diseases or injuries. The spine is a subspecialty of orthopedics; when the spine is injured or diseased and requires surgical treatment, a retractor is usually used for assistance. A conventional retractor, also known as a hook, is used to retract the patient's tissues, exposing the affected area for easier exploration and manipulation by the surgeon. Retractors can be divided into handheld and automatic types, available in various shapes and sizes, allowing for selection based on surgical needs. When using a handheld retractor, the traction device is typically manually attached to the tissue, and the other end is tied to the operating table or other location; however, this process is relatively cumbersome. Automatic retractors, on the other hand, are generally controlled by a power device, reducing manual operation and making them more convenient.

[0003] Chinese Patent CN113317827B discloses a retraction device for spinal surgery, comprising a fixation frame, a moving device, a steering device, a lifting device, a main retraction device, and two auxiliary retraction devices. The fixation frame is vertically placed. The moving device is mounted on the fixation frame and slidably engages with it. The steering device is mounted at the bottom of the moving device and slidably engages with it. The lifting device is mounted on the steering device and fixedly connected to it. The main retraction device is located at the lifting end of the lifting device and rotatably connected to it. The two auxiliary retraction devices are located at the bottom of the steering device and slidably connected to it. While this device allows users to adjust the main retraction device to the appropriate angle when facing incisions at different angles, thereby retracting the incision position, it is primarily used to retract tissue. Furthermore, the presence of the fixation frame restricts the operating position during use. It is also inconvenient to use when retracting spinal joints for treatments such as scoliosis surgery, spinal tumor surgery, vertebrectomy, and spinal debridement. When retracting the vertebrae, a spinal bone retraction device must be used again, making the operation even more cumbersome. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a retraction device for spinal surgery, which can retract not only the superficial tissues but also the deep muscles during spinal surgery. At the same time, it can also retract the spinal bones while retracting the tissues. It is convenient to use and applicable to retraction of the spine in different locations.

[0005] The present invention solves the above-mentioned technical problems through the following technical means:

[0006] A retraction device for spinal surgery includes a retraction mechanism comprising a first retraction structure and a second retraction structure. The first retraction structure includes a first retraction member and a second retraction member. The second retraction member is retractably mounted on the first retraction member. The first and second retraction members are used to cooperate in retracting tissue. When the first and second retraction members are used to cooperate in retracting tissue, the second retraction structure is mounted on the first and second retraction members to retract the spinal bone or tissue.

[0007] Based on the substrate of the above-mentioned solution, this application further optimizes the following aspects:

[0008] Furthermore, the first retraction member includes a first retraction arm, a telescopic member, and at least two first retraction blocks. The first retraction arm has a notch that is adapted to the second retraction member. The telescopic member is fixedly assembled on one side of the first retraction arm. The output end of the telescopic member is fixedly connected to one end of the second retraction member. The two first retraction blocks are detachably disposed at the bottom of the first retraction arm.

[0009] According to the above-mentioned technical means, during use, the telescopic component allows the first and second retraction components to adjust their retraction positions according to the size and length of the surgical incision, making them convenient to use; when not in use, the second retraction component can be stored in the notch of the first retraction component for easy subsequent storage.

[0010] Furthermore, the first retractor also includes an adjusting member. The first retractor arm has a groove at the position of the first retractor block. The adjusting member is used to drive the first retractor block to slide in the groove and fix the position of the first retractor block after sliding.

[0011] Based on the above-mentioned technical means, the position of the first retraction block can be finely adjusted by adjusting the adjustment component, so as to make the surgical field of view wider.

[0012] Furthermore, the second retractor includes a second retractor arm and at least two second retractor blocks, the two second retractor blocks being detachably disposed at the bottom of the second retractor arm, and the first retractor block and the second retractor block being staggered.

[0013] The aforementioned technical means are used in conjunction with the first retraction component to retract the tissue at the surgical incision site.

[0014] Furthermore, the second retraction structure includes two third retraction members, which are spaced apart between the first and second retraction members, and are used to retract the spinal bones or tissues.

[0015] Based on the above-mentioned technical means, on the one hand, the two third retraction devices can be used to retract the deep tissues, the muscles or nerves located on the side of the spine, and at the same time, facilitate the exposure of the surgical field. On the other hand, they can be used to retract adjacent vertebrae, which facilitates scoliosis surgery, spinal tumor surgery, spinal resection, spinal debridement and other procedures.

[0016] Furthermore, the two third retractor components have the same structure. The third retractor component includes a connecting arm, a sliding rod, a fixed sleeve, and a first traction component. The connecting arm is connected between the first retractor component and the second retractor component. The sliding rod is detachably mounted on the connecting arm. The fixed sleeve is rotatably mounted on the bottom of the sliding rod. One end of the fixed sleeve is provided with a sliding shaft. The first traction component is hooked onto the sliding shaft.

[0017] According to the above-mentioned technical means, on the one hand, the position of the first traction member can be adjusted, thereby further pulling apart the deep tissues, the muscles or nerve tissues located on the side of the spine, or pulling apart the adjacent vertebrae.

[0018] Furthermore, the second retraction structure includes a fourth retraction member, which is disposed between the first and second retraction members and is used to retract the spinal bone or tissue.

[0019] According to the above-mentioned technical means, by using a fourth retraction device, it is possible to retract the deep tissues, the muscles or nerve tissues located on the side of the spine, or the adjacent vertebrae.

[0020] Furthermore, the fourth traction member includes a mounting arm, an adjusting rod, a mounting sleeve, a transmission member, and a second traction member. The mounting arm is installed between the first and second traction members. The adjusting rod is slidably installed on the mounting arm. The mounting sleeve is fixedly installed on the adjusting rod. The transmission member is disposed inside the mounting sleeve and is connected to the adjusting rod in a transmission manner. The second traction member is disposed at both ends of the transmission member. The transmission member is used to drive at least two second traction members to move closer to or further away from each other.

[0021] Based on the above-mentioned technical means, by cooperating with the mounting arm, adjusting rod, mounting sleeve, transmission component, and second traction component, the relative positions of at least two second traction components can be adjusted, thereby making it more convenient to pull apart the deep tissues, muscles or nerve tissues located on the side of the spine, or adjacent vertebrae.

[0022] Furthermore, it also includes an installation structure and an adjustment seat. The adjustment seat is fixedly assembled on the installation structure. The installation structure is used to drive the adjustment seat and the pulling mechanism to rise and fall. The pulling mechanism is rotatably mounted on the adjustment seat and is used to adjust the position of the pulling mechanism.

[0023] Based on the above technical means, the height and position of the pulling device are adjustable and easy to adjust, thereby achieving pulling at different positions.

[0024] Furthermore, the mounting structure includes a base plate, a sliding plate, and a lifting component. A track groove is formed on the base plate, the sliding plate is slidably mounted on the base plate, the lifting component is fixedly mounted on the sliding plate, and the adjusting seat is fixedly mounted on the output end of the lifting component.

[0025] The adjusting seat has multiple slots, and one end of the pulling mechanism is rotatably installed inside the adjusting seat, while the other end passes through one of the slots.

[0026] Based on the above-mentioned technical means, the traction mechanism can be adjusted in both the height and length directions of the human body, and the angle of the traction mechanism can also be adjusted, which is more conducive to the development of spinal surgery.

[0027] The present application, employing the above-described scheme, has at least the following advantages:

[0028] 1. By employing the first and second retraction structures, it can be directly placed at the site requiring surgery. On the one hand, it can retract the tissue at the incision site; on the other hand, it can also retract the deep tissue, the muscle or nerve tissue located on the side of the spine, or the adjacent vertebrae, making it convenient to use.

[0029] 2. When only tissue retraction is required, only the first retraction structure can be used. The first and second retraction arms in the first retraction structure can be adjusted to retract their positions according to the size and length of the surgical incision, making them convenient to use. When not in use, the second retraction component can be stored in the notch of the first retraction component for easy subsequent storage.

[0030] 3. By using the second traction structure on the first traction structure, on the one hand, the second traction structure can be directly attached to the first traction structure, which is convenient to use and can be used to traction the muscles or nerve tissue located on the side of the spine or to traction the adjacent vertebrae; on the other hand, one end of the second traction structure can be rotated and installed on the first traction structure, which facilitates the subsequent storage of the entire traction mechanism.

[0031] 4. By setting the retraction mechanism on the adjusting seat, which in turn is set on the lifting component, and the lifting component is slidably set on the base, the retraction mechanism can be adjusted in both the height and length directions of the human body. It can also adjust the angle of the retraction mechanism, which is more conducive to the unfolding of spinal surgery. Attached Figure Description

[0032] This application can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0033] Figure 1 This is one of the structural schematic diagrams of the first pull-away structure when it is closed in the embodiments of this application;

[0034] Figure 2 This is the second schematic diagram of the structure when the first pulling structure is closed in the embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the structure when the first traction structure is unfolded in the embodiment of this application;

[0036] Figure 4 This is a partially enlarged structural diagram of the first traction block in the first traction structure in the embodiments of this application;

[0037] Figure 5 This is a schematic diagram of the cooperative use of the first traction structure and the third traction member in the embodiments of this application;

[0038] Figure 6 This is a partial structural diagram of the third pull-away member during installation in an embodiment of this application;

[0039] Figure 7 This is a partially enlarged structural diagram of the third pull-away member in the embodiments of this application;

[0040] Figure 8 This is a schematic diagram of the cooperative use of the first traction structure and the fourth traction member in the embodiments of this application;

[0041] Figure 9 This is a schematic diagram of the structure of the fourth pull-away member during installation in the embodiments of this application;

[0042] Figure 10 This is a schematic diagram of the structure of the fourth pull-away member in the embodiments of this application;

[0043] Figure 11 This is a cross-sectional view of the fourth pull-away member in the embodiments of this application;

[0044] Figure 12 This is one of the structural schematic diagrams of the first traction structure, the third traction member, the mounting structure, and the adjusting seat used in cooperation in the embodiments of this application;

[0045] Figure 13 This is the second schematic diagram of the structure in which the first traction structure, the third traction member, the mounting structure, and the adjusting seat are used in conjunction in the embodiments of this application;

[0046] Figure 14 This is a schematic diagram of the structure in which the first traction structure and the fourth traction member, as well as the mounting structure and the adjusting seat are used in conjunction in the embodiments of this application;

[0047] Explanation of key component symbols:

[0048] 1. First retraction structure; 11. First retraction arm; 12. Notch; 121. Receiving groove; 13. Telescopic component; 14. First retraction block; 141. Slide groove; 142. Retraction block seat; 143. Threaded rod; 144. Retraction block body; 15. Second retraction arm; 16. Slot; 17. Second retraction block; 18. Adjusting arm; 181. Limiting sleeve; 182. Adjusting plate;

[0049] 2. Third pulling member; 21. Connecting arm; 211. Threaded through hole; 22. Sliding rod; 221. Handle; 23. Fixing sleeve; 231. Sleeve; 232. Moving groove; 24. Moving plate; 241. Ear; 242. Sliding shaft; 243. First pulling member; 244. Moving column; 245. Nut;

[0050] 3. Fourth traction component; 31. Mounting arm; 311. Through hole; 32. Adjusting rod; 33. Mounting sleeve; 34. Handle; 341. Adjusting column; 342. Gear; 35. First rack; 351. Connecting block; 352. Ear plate; 353. Mounting shaft; 354. Second traction component; 36. Second rack;

[0051] 4. Base plate; 41. Track groove; 42. Sliding plate; 5. Lifting component; 6. Adjustment seat; 61. Bayonet; 62. Arc-shaped protrusion; 7. Tray. Detailed Implementation

[0052] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures, and should not be construed as limiting the present invention. In order to better illustrate the embodiments of the present invention, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product size; it is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the figures.

[0053] In the figures of this invention, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the figures are for illustrative purposes only and should not be construed as limiting this invention. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0054] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0055] like Figure 1-14 As shown in the figure, this application discloses a retraction device for spinal surgery, including a mounting structure, an adjusting seat 6, and a retraction mechanism. The adjusting seat 6 is fixedly mounted on the mounting structure, which is used to drive the adjusting seat 6 and the retraction mechanism to rise and fall and move along the length of the human body. The retraction mechanism is rotatably mounted on the adjusting seat 6 to adjust the position of the retraction mechanism and fix the adjusted position.

[0056] Through the cooperation of the installation structure, the adjustment seat 6 and the traction mechanism, the traction mechanism can be adjusted in the height direction and the length direction of the human body, and the angle of the traction mechanism can also be adjusted, which is more conducive to the development of spinal surgery.

[0057] In some embodiments, such as Figure 12-14 As shown, the mounting structure includes a base plate 4, a sliding plate 42, and a lifting member 5. A track groove 41 is provided on the base plate 4. The sliding plate 42 is slidably mounted on the base plate 4. The lifting member 5 is fixedly mounted on the sliding plate 42 by bolts. The adjusting seat 6 is fixedly mounted on the output end of the lifting member 5 by bolts, so that the sliding plate 42, the lifting member 5, and the adjusting seat 6 can move along the direction of the track groove 41, thereby adapting to spinal surgery in different positions.

[0058] In this embodiment, when moving the sliding plate 42, the movement can be achieved by installing devices such as electric push rods, electric telescopic rods, or cylinders on the substrate 4. Alternatively, the sliding plate 42 can be moved manually on the substrate 4.

[0059] In this embodiment, the lifting component 5 can be an electric telescopic rod, an electric push rod, a cylinder, a hydraulic cylinder, or other equipment capable of lifting.

[0060] In this embodiment, as Figure 13 As shown, the adjustment seat 6 is a concave structure. Multiple slots 61 are provided on the side wall of the adjustment seat 6 for engaging with the retraction mechanism to fix its position. By engaging the retraction mechanism with slots 61 at different positions, the position of the retraction mechanism can be adjusted, thus facilitating spinal surgery.

[0061] In this embodiment, an arc-shaped protrusion 62 is fixedly provided inside the adjusting seat 6, and one end of the pulling mechanism is hinged to the arc-shaped protrusion 62, which facilitates the stable use of the pulling mechanism on the adjusting seat 6.

[0062] In some embodiments, a tray 7 is placed on the adjustment seat 6. The tray 7 can hold components of the retraction mechanism, making the use of the retraction mechanism more flexible. It can also hold surgical-related items, enhancing practicality.

[0063] In some embodiments, such as Figure 1-11 As shown, the retraction mechanism includes a first retraction structure 1 and a second retraction structure. The first retraction structure 1 can be used to retract the tissue at the surgical incision site. The second retraction structure can be used to retract deep tissues, such as muscles or nerves located on the side of the spine, and can also be used to retract adjacent vertebrae, facilitating scoliosis surgery, spinal tumor surgery, vertebrectomy, spinal debridement, etc.

[0064] In some embodiments, the first retraction structure 1 and the second retraction structure can be used alone or in combination, or in conjunction with the mounting structure and the adjusting seat 6. The structure is simple and highly practical. When the first retraction structure 1 is used alone, it can be directly placed on the surgical site to retract the tissue at the surgical incision site. When the first retraction structure 1 and the second retraction structure are used in combination, the first retraction structure 1 first retracts the tissue at the surgical incision site, and then the second retraction structure retracts the deep tissue, particularly the muscles or nerves located on the side of the spine. The second retraction structure can also retract adjacent vertebrae, facilitating scoliosis surgery, spinal tumor surgery, vertebrectomy, spinal debridement, and other procedures.

[0065] In this embodiment, as Figure 1-4 As shown, the first retraction structure 1 includes a first retraction member and a second retraction member. The second retraction member is retractably mounted on the first retraction member. The first and second retraction members are used to assist in retracting the tissue at the surgical incision site. When the first and second retraction members retract the tissue, the second retraction structure is mounted on the first and second retraction members to retract the vertebrae or the muscles or nerve tissue located on the side of the vertebrae.

[0066] In some embodiments, such as Figure 1-3As shown, the first retraction component includes a first retraction arm 11, a telescopic component 13, and at least two first retraction blocks 14. The first retraction arm 11 has a notch 12 that fits into the second retraction component. When not in use, the second retraction component can be closed within the notch 12 for easy storage. The telescopic component 13 is bolted to one side of the first retraction arm 11. The output end of the telescopic component 13 is fixedly connected to one end of the second retraction component, driving the operation of the second retraction component. This allows adjustment of the retraction position according to the size and length of the surgical incision, making it convenient to use. In this design, two first retraction blocks 14 are used, but the number can be selected according to actual needs. The two first retraction blocks 14 are detachably mounted at the bottom of the first retraction arm 11 for retracting tissue at the surgical incision site, and allow for easy replacement of different sized first retraction blocks 14 according to different incision sizes.

[0067] In this embodiment, the telescopic component 13 can be an automated device with telescopic function such as an electric support rod, an electric telescopic rod, or an electric hinge, or it can be a manually telescopic sleeve, such as the telescopic structure of a folding umbrella. A suitable telescopic structure can also be selected according to the actual situation.

[0068] In this embodiment, as Figure 2 As shown, the first retraction member also includes an adjusting member. The first retraction arm 11 has a groove 141 at the position of the first retraction block 14. The adjusting member is used to drive the first retraction block 14 to slide in the groove 141 and fix the position of the first retraction block 14 after sliding. The position of the first retraction block 14 can be finely adjusted by the adjusting member. In conjunction with the second retraction member, the surgical field of view is wider.

[0069] In this embodiment, as Figure 4 As shown, to facilitate the replacement of the first retraction block 14, the first retraction block 14 includes a retraction block seat 142, a threaded rod 143, and a retraction block body 144. The threaded rod 143 is fixedly installed at the bottom of the retraction block seat 142, and the retraction block body 144 has a threaded hole. Through the cooperation of the threaded rod 143 and the threaded hole, the retraction block body 144 can be replaced and its position can be adjusted. At the same time, it is also convenient for postoperative cleaning and disinfection.

[0070] In this embodiment, as Figure 2 As shown, the adjusting component includes an adjusting plate 182, an adjusting arm 18, and a limiting sleeve 181. One end of the adjusting arm 18 is fixedly connected to the retraction block seat 142, and the other end extends out of the first retraction arm 11. The adjusting plate 182 is fixedly installed on the two adjusting arms 18 by bolts for synchronous adjustment of the two first retraction blocks 14. Of course, the adjusting plate 182 can also be omitted to connect the two or more adjusting arms 18, so that each first retraction block 14 can be adjusted individually to adapt to different tissue retraction degrees, and it is also convenient for overall disassembly, cleaning and disinfection.

[0071] The limiting sleeve 181 is fitted onto the adjusting arm 18, and the cross-section of the limiting sleeve 181 is tapered. The part of the adjusting arm 18 that protrudes from the first retracting arm 11 is flared, which helps the limiting sleeve 181 to fix the position of the adjusting arm 18. The limiting sleeve 181 can be made of rubber, silicone, or other elastic materials.

[0072] In some embodiments, such as Figure 3 As shown, the second retractor includes a second retractor arm 15 and at least two second retractor blocks 17. The output end of the telescopic member 13 is fixedly connected to one end of the second retractor arm 15 to drive the extension and retraction of the second retractor arm 15. The number of second retractor blocks 17 is the same as the number of first retractor blocks 14, and can be increased or decreased according to actual needs. The two second retractor blocks 17 are detachably disposed at the bottom of the second retractor arm 15, that is, the structure of the second retractor blocks 17 is the same as the structure of the first retractor blocks 14, thereby facilitating the replacement of the retractor block body 144 in the second retractor blocks 17. The first retractor blocks 14 and the second retractor blocks 17 are staggered. The first retractor arm 11 is provided with a receiving groove 121. When the first retractor arm 11 and the second retractor arm 15 are closed, the second retractor blocks 17 can be stored in the receiving groove 121, reducing subsequent storage space.

[0073] In some embodiments, such as Figure 5-7 As shown, the second retraction structure includes two third retraction elements 2. The two third retraction elements 2 are spaced apart between the first and second retraction elements, and are used to retract the spinal bones or tissues. On one hand, the two third retraction elements 2 can be used to retract deep tissues, such as muscles or nerves located on the side of the spinal bones, while also facilitating exposure of the surgical field. On the other hand, they can be used to retract adjacent spinal bones, facilitating procedures such as scoliosis surgery, spinal tumor surgery, vertebrectomy, and spinal debridement.

[0074] In this embodiment, as Figure 3 As shown, multiple slots 16 or holes can be provided on both the first retraction arm 11 and the second retraction arm 15 for detachable installation of two third retraction components 2. The slots 16 or holes can be axially aligned or not aligned, allowing for adjustment of the positions of the two third retraction components 2 according to actual conditions to achieve a better opening of the surgical field.

[0075] In this embodiment, when the third retractor 2 is needed, two or more third retractors 2 can be locked in the corresponding slots 16 or holes. When not in use, they can be temporarily stored on the tray 7, so as to select according to the use situation. In a certain respect, this can enhance the flexibility of the use of surgical instruments and reduce the intensity of postoperative disinfection work.

[0076] In some alternative embodiments, such as Figure 6-7As shown, the two third retraction components 2 have identical structures. The following description uses one of them as an example: The third retraction component 2 includes a connecting arm 21, a sliding rod 22, a fixing sleeve 23, and a first traction component 243. The connecting arm 21 connects between the first and second retraction components, providing an installation position. The sliding rod 22 is detachably mounted on the connecting arm 21, and the fixing sleeve 23 is rotatably mounted on the bottom of the sliding rod 22, allowing the fixing sleeve 23 to rotate relative to the sliding rod 22. One end of the fixing sleeve 23 is provided with a sliding shaft 242, and the first traction component 243 is hooked onto the sliding shaft 242. This is used to retract deep tissues, particularly muscles or nerve tissue located on the side of the spine, and can also be used to retract adjacent vertebrae.

[0077] In this embodiment, as Figure 6 As shown, the connecting arm 21 can be multi-segmented, with each segment of the connecting arm 21 having the same structure. It is assembled by connecting the threaded post at one end of the connecting arm 21 with the threaded hole on the other connecting arm 21. This allows for the selection of connecting arms 21 of different lengths depending on the opening conditions of the first retracting arm 11 and the second retracting arm 15, making the use of the connecting arm 21 more flexible and reducing the intensity of the initial preparation work and subsequent disinfection work.

[0078] Each connecting arm 21 has a threaded through hole 211 through which a sliding rod 22 is threaded. The threaded through hole 211 can be located at the edge of the connecting arm 21 or at the middle of the connecting arm 21. Multiple threaded through holes 211 can also be provided on each connecting arm 21, allowing the position of the sliding rod 22 to be selected according to the actual use. The end of the sliding rod 22 has a connecting post. A fixing sleeve 23 is rotatably mounted on the connecting post via a sleeve 231 and a bearing. The sleeve 231 fits with the bottom of the sliding rod 22, allowing the fixing sleeve 23 to rotate relative to the sliding post. After retraction, this allows the first retraction member to rotate, thereby adjusting the position of the first retraction member and reducing the impact on the surgical field while ensuring retraction.

[0079] like Figure 7 As shown, ears 241 are fixedly formed on both sides of one end of the fixed sleeve 23. The sliding shaft 242 is installed between the two ears 241. The first traction member 243 is hooked on the sliding shaft 242, so that the position of the first traction member 243 is adjustable. The hooking method facilitates subsequent replacement and disinfection.

[0080] In this embodiment, a handle 221 can also be installed on the upper part of the sliding rod 22 to facilitate its use. When the first traction member 243 is in use, the position of the sliding rod 22 can be adjusted according to the pulling position and depth to allow the first traction member 243 to reach a better usage position. In some options, a telescopic device such as an electric telescopic rod can also be used to achieve the effect of the sliding rod 22.

[0081] To further adjust the position of the first traction member 243, a movable plate 24 can be slidably installed inside the fixed sleeve 23. At this time, two ears 241 are formed at one end of the movable plate 24, and a sliding shaft 242 is installed between the two ears 241. The first traction member 243 is hooked onto the sliding shaft 242. To fix the position of the movable plate 24 after it has been moved, so that the first traction member 243 can easily pull open the position that needs to be pulled open, a movable column 244 is fixedly installed on the movable plate 24. A movable groove 232 is opened on the fixed sleeve 23. The movable column 244 passes through the movable groove 232, and the position of the movable column 244 is fixed by engaging the movable column 244 with a nut 245. Alternatively, a snap-fit ​​block can be used to fix the moved movable column 244 to the outer surface of the fixed sleeve 23, thereby achieving fixation.

[0082] In this embodiment, to reduce damage to the part to be pulled apart by the first traction member 243, a silicone layer or rubber layer can be covered on the first traction member 243. The first traction member 243 can be configured as a hook, a Z-shaped pulling hook, a block baffle, etc., and the structure and shape of the first traction member 243 can be selected according to the actual situation. To ensure the pulling strength, multiple first traction members 243 can also be snapped onto each sliding shaft 242.

[0083] In other embodiments, such as Figure 8-11 As shown, the second retraction structure can also be configured as a fourth retraction member 3. The fourth retraction member 3 is positioned between the first and second retraction members. By using the fourth retraction member 3, it is possible to retract deep tissues, muscles or nerve tissues located on the side of the spine, or adjacent vertebrae, making it more convenient to use.

[0084] In some embodiments, such as Figure 9-11 As shown, the fourth traction member 3 includes a mounting arm 31, an adjusting rod 32, a mounting sleeve 33, a transmission member, and a second traction member 354. The mounting arm 31 is installed between the first and second traction members to provide an installation position. The adjusting rod 32 is slidably mounted on the mounting arm 31 to adjust the relative height between the second traction member 354 and the mounting arm 31 for better operating conditions. The mounting sleeve 33 is fixedly mounted on the adjusting rod 32. The transmission member is disposed within the mounting sleeve 33 and is connected to the adjusting rod 32. The second traction members 354 are disposed at both ends of the transmission member, which is used to move at least two second traction members 354 closer together or further apart.

[0085] In this embodiment, as Figure 8-9As shown, the mounting arm 31 also adopts a multi-segment design, with each segment of the mounting arm 31 having the same structure. It is assembled by connecting a threaded post at one end of the mounting arm 31 with a threaded hole on another mounting arm 31. This allows for the selection of mounting arms 31 of different lengths depending on the opening conditions of the first retracting arm 11 and the second retracting arm 15, making the use of the mounting arm 31 more flexible and reducing the intensity of the initial preparation work and subsequent disinfection work.

[0086] Each mounting arm 31 has a through hole 311. The through hole 311 can be located at the edge of the mounting arm 31, or at the middle of the mounting arm 31, or multiple through holes 311 can be provided on each mounting arm 31, thus allowing the position of the adjusting rod 32 to be selected according to the actual use. The adjusting rod 32 slides out of the through hole 311. To prevent the adjusting rod 32 from slipping out of the through hole 311, a friction sleeve is provided between the adjusting rod 32 and the through hole 311. The friction sleeve can be set on the adjusting rod 32 or inside the through hole 311, allowing the adjusting rod 32 to move up and down without slipping out of the through hole 311, which is beneficial for fine-tuning the working height of the second pulling member. The friction sleeve can be a rubber sleeve or silicone sleeve with friction protrusions, or a rubber sleeve with a rough surface.

[0087] like Figure 10-11 As shown, an adjusting column 341 is rotatably mounted inside the adjusting rod 32. The adjusting column 341 passes through the mounting sleeve 33 and is connected to the transmission component, thereby driving the transmission component to work. To make the adjusting column 341 easier to use, a handle 34 is provided at the upper end of the adjusting rod 32.

[0088] In this embodiment, the transmission component includes a gear 342, a first rack 35, and a second rack 36. The gear 342 is fixedly mounted on the adjusting column 341 by a key connection. The first rack 35 and the second rack 36 are symmetrically arranged and both mesh with the gear 342. When the adjusting column 341 drives the gear 342 to rotate, it can drive the first rack 35 and the second rack 36 to move away from or closer to each other within the mounting sleeve 33.

[0089] In this embodiment, as Figure 10As shown, a connecting block 351 is fixedly formed at one end of both the first rack 35 and the second rack 36. Each connecting block 351 has an ear plate 352 on both sides, and an mounting shaft 353 is fixedly installed between the two ear plates 352. A second traction member 354 is snapped onto the mounting shaft 353, making the position of the second traction member 354 adjustable. This hook-and-loop connection facilitates subsequent replacement and disinfection. The connecting blocks 351 on the first rack 35 and the second rack 36 are oriented in opposite directions, allowing the second traction member 354 on the first rack 35 and the second rack 36 to move away from or closer to each other via the two connecting blocks 351 when they are in operation. This achieves traction on deep tissues, muscles or nerve tissue located on the side of the spine, or adjacent vertebrae.

[0090] In this embodiment, to reduce damage to the part to be pulled apart by the second traction member 354, a silicone layer or rubber layer can be covered on the second traction member 354. The second traction member 354 can be configured as a hook, a Z-shaped pulling hook, a block baffle, etc., and the structure and shape of the second traction member 354 can be selected according to the actual situation. To ensure the pulling strength, multiple second traction members 354 can also be snapped onto each mounting shaft 353.

[0091] In this embodiment, when the muscles or nerve tissue located on the side of the spine or the adjacent vertebrae are retracted by the two second retraction members, the surgical field of view can be guaranteed as much as possible by rotating the adjustment rod 32182 while ensuring the retraction position.

[0092] In some embodiments, the mounting arm 31 can also be a single piece, with one end of the mounting arm 31 rotatably mounted on the first retraction arm 11 or the second retraction arm 15 via a hinge. Taking rotatable mounting on the first retraction arm 11 as an example: when rotatably mounted on the first retraction arm 11, the other end can be engaged with the second retraction arm 15. When engaged, the other end of the mounting arm 31 can be engaged to keep the mounting arm 31 in a straight line state, or it can be engaged at an angle to keep the mounting arm 31 in an angled state, thereby making the position of the second traction member 354 more flexible and more conducive to the operation.

[0093] In this embodiment, when the first retractor arm 11 is rotatably mounted on the first retractor arm 11, a slot can be opened in the inner wall of the second retractor arm 15 so that the fourth retractor 3 can be stored in the first retractor arm 15 when the second retractor arm 15 is closed, thereby reducing the storage space.

[0094] The foregoing has provided a detailed description of a retraction device for spinal surgery provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0095] It should be noted that the terms "one embodiment," "embodiment," "some alternative embodiments," "exemplary embodiments," and "some embodiments" used in the specification indicate 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, such phrases do not necessarily refer to the same embodiment. Moreover, 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, is within the knowledge scope of those skilled in the art.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A retractor device for spinal surgery, characterized in that, The device includes a retraction mechanism, which includes a first retraction structure (1) and a second retraction structure. The first retraction structure (1) includes a first retraction member and a second retraction member. The second retraction member is telescopically mounted on the first retraction member. The first and second retraction members are used to cooperate in retracting tissue. When the first and second retraction members are used to cooperate in retracting tissue, the second retraction structure is mounted on the first and second retraction members to retract the spinal bone or tissue.

2. The retractor device for spinal surgery according to claim 1, wherein, The first retractor includes a first retractor arm (11), a telescopic member (13), and at least two first retractor blocks (14). The first retractor arm (11) has a notch (12) that is adapted to the second retractor. The telescopic member (13) is fixedly mounted on one side of the first retractor arm (11). The output end of the telescopic member (13) is fixedly connected to one end of the second retractor. The two first retractor blocks (14) are detachably disposed at the bottom of the first retractor arm (11).

3. The retractor device for spinal surgery according to claim 2, wherein, The first retractor also includes an adjusting member. The first retractor arm (11) has a groove (141) at the position of the first retractor block (14). The adjusting member is used to drive the first retractor block (14) to slide in the groove (141) and fix the position of the first retractor block (14) after sliding.

4. A retractor device for spinal surgery according to claim 2 or 3, characterised in that, The second retractor includes a second retractor arm (15) and at least two second retractor blocks (17). The two second retractor blocks (17) are detachably disposed at the bottom of the second retractor arm (15), and the first retractor block (14) and the second retractor block (17) are staggered.

5. The retractor device for spinal surgery according to claim 1, wherein, The second retraction structure includes two third retraction members (2), which are spaced apart between the first retraction member and the second retraction member. The two third retraction members (2) are used to retract the spinal bone or tissue.

6. The retractor device for spinal surgery according to claim 5, wherein, The two third retractor members (2) have the same structure. The third retractor member (2) includes a connecting arm (21), a sliding rod (22), a fixing sleeve (23), and a first traction member (243). The connecting arm (21) is connected between the first retractor member and the second retractor member. The sliding rod (22) is detachably mounted on the connecting arm (21). The fixing sleeve (23) is rotatably mounted on the bottom of the sliding rod (22). One end of the fixing sleeve (23) is provided with a sliding shaft (242). The first traction member (243) is hooked on the sliding shaft (242).

7. The retractor device of claim 1, wherein, The second retraction structure includes a fourth retraction member (3), which is disposed between the first retraction member and the second retraction member and is used to retract the spinal bone or tissue.

8. The retraction device for spinal surgery according to claim 7, characterized in that, The fourth traction member (3) includes a mounting arm (31), an adjusting rod (32), a mounting sleeve (33), a transmission member, and a second traction member (354). The mounting arm (31) is installed between the first traction member and the second traction member. The adjusting rod (32) is slidably installed on the mounting arm (31). The mounting sleeve (33) is fixedly installed on the adjusting rod (32). The transmission member is disposed inside the mounting sleeve (33) and is connected to the adjusting rod (32) in a transmission manner. The second traction member (354) is disposed at both ends of the transmission member. The transmission member is used to drive at least two second traction members (354) to move closer to or further away from each other.

9. The retractor device for spinal surgery according to claim 1 or 5 or 7, wherein, It also includes an installation structure and an adjustment seat (6), the adjustment seat (6) being fixedly mounted on the installation structure, the installation structure being used to drive the adjustment seat (6) and the pulling mechanism to rise and fall, the pulling mechanism being rotatably mounted on the adjustment seat (6) and used to adjust the position of the pulling mechanism.

10. The retractor device for spinal surgery according to claim 9, wherein, The mounting structure includes a base plate (4), a sliding plate (42), and a lifting member (5). A track groove (41) is formed on the base plate (4). The sliding plate (42) is slidably mounted on the base plate (4). The lifting member (5) is fixedly mounted on the sliding plate (42). The adjusting seat (6) is fixedly mounted on the output end of the lifting member (5). The adjusting seat (6) has multiple slots (61). One end of the pulling mechanism is rotatably installed inside the adjusting seat (6), and the other end passes through one of the slots (61).

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