A guide plate device for spinal osteotomy and orthopedics

Abstract

This invention discloses a guide plate device for spinal osteotomy and correction. Each first support member is fixed to the first guide plate body for connection with screws. The first guide plate body has a first window for locating the spinal laminectomy area. A rib resection groove is formed at the edge of the first window to determine the rib resection area. There are two rib resection grooves, arranged opposite each other on both sides of the first window. Each second support member is fixed to the second guide plate body for connection with screws. The second guide plate body has a second window for locating the pedicle osteotomy guide plate's resection area. There are two second windows, arranged opposite each other. The spinal laminectomy guide plate and the pedicle osteotomy guide plate share a single screw assembly. This invention avoids errors in judging the resection area based on human experience, and also avoids hand-holding the guide plate and guide plate position deviation during surgery.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a guide plate device for spinal osteotomy and orthopedics. Background Technology

[0002] With the development of 3D printing technology, its application in the medical field is becoming increasingly widespread. In orthopedics, it has been widely used in preoperative planning and design, personalized prosthesis printing and implantation, and pedicle screw placement guides, offering advantages such as improved surgical precision and reduced risk of iatrogenic injury. Although traditional freehand spinal osteotomy is already in clinical use, and guide technology has been initially explored, current limitations in the design and manufacturing of guides restrict its application in grade III and higher spinal osteotomy orthopedic surgeries.

[0003] Current spinal osteotomy guides are primarily designed based on preoperative CT data and then 3D printed to scale. However, preoperative planning data and 3D-printed osteotomy guide models can be affected by spinal deformation due to anesthesia, patient positioning, or post-operative tissue dissection, leading to data deviations and impacting the accuracy of the osteotomy guide. Existing spinal osteotomy guides are attached to the bone surface; prolonged handling and hand tremors can result in poor guide fit and stability. Furthermore, some existing osteotomy guides do not adequately consider blood vessels, nerves, and the intraoperative surgical field of vision; holding the guide can obstruct the view and negatively affect surgical outcomes.

[0004] In summary, while existing surgical guides for vertebral surgery can locate the surgical area, they require manual handling, making complete fixation impossible. This is particularly problematic in corrective surgeries for complex spinal deformities graded as level three or higher, where various procedures can cause guide displacement. Consequently, precise determination of the resection area in spinal osteotomy and correction relies heavily on individual experience. Furthermore, existing surgical guides for vertebral surgery cannot accurately indicate the extent of resection in all areas required during spinal osteotomy and correction. Summary of the Invention

[0005] In order to overcome the problems existing in the prior art, the present invention aims to provide a guide plate device for spinal osteotomy and correction, thereby achieving precise positioning and stable fixation of the guide plate throughout the resection step of spinal osteotomy and correction surgery, and enabling accurate determination of the resection area without experience.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A guide plate device for spinal osteotomy and orthopedic surgery includes: a spinal laminectomy guide plate and a pedicle osteotomy guide plate;

[0008] The spinal laminectomy guide plate includes a first guide plate body and a plurality of first support members, each of which is fixed to the first guide plate body for connection with screws; the first guide plate body has a first window for positioning the spinal laminectomy area; a rib resection groove is formed at the edge of the first window of the first guide plate body for determining the rib resection area; the number of rib resection grooves is two and they are arranged opposite each other on both sides of the first window;

[0009] The pedicle osteotomy guide plate includes a second guide plate body and multiple second support members. Each second support member is fixed on the second guide plate body for connection with screws. The second guide plate body has a second window for positioning the pedicle osteotomy guide plate resection range. There are two second windows, which are arranged opposite to each other.

[0010] The spinal laminectomy guide plate and the pedicle osteotomy guide plate share a common screw assembly.

[0011] Optionally, the first window is a quadrangular prism cavity, and the second window is a quadrangular frustum cavity that expands at the top and narrows at the bottom.

[0012] Optionally, the second guide plate body is further provided with an auxiliary window, the edge line of which matches the edge line of the first window, for accurately positioning the position of the second guide plate body, and the edge line of the auxiliary window avoids the edge line of the second window.

[0013] Optionally, the rib resection groove is a C-shaped groove.

[0014] Optionally, both the first support member and the second support member are provided with connecting posts for connecting screw assemblies.

[0015] Optionally, the connecting post is a cylinder.

[0016] Optionally, both the outer edges of the first guide plate body and the outer edges of the second guide plate body are provided with spinous process avoidance areas and pedicle avoidance areas to conform to the surface of the spine.

[0017] Optionally, the guide plate device for spinal osteotomy orthopedics is made of resin or metal.

[0018] Optionally, both the first guide plate body and the second guide plate body are plate-shaped, and the number of the first support member and the number of the second support member are both four.

[0019] Optionally, the bottom surface of both the first guide plate body and the bottom surface of the second guide plate body are arc-shaped curved surfaces for conforming to the spine.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention discloses a spinal osteotomy and orthopedic guide device, comprising a spinal laminectomy guide and a pedicle osteotomy guide. The spinal laminectomy guide precisely positions the resection range of the ribs and lamina, while the pedicle osteotomy guide precisely positions the resection range of the pedicle osteotomy. The spinal laminectomy guide is provided with multiple first supports, and the pedicle osteotomy guide is provided with multiple second supports. Both the first and second supports can cooperate with screws to provide support, allowing the first and second guide bodies of the spinal laminectomy guide and the pedicle osteotomy guide to be suspended and fixed in their respective areas by screws. This reduces errors caused by intraoperative dissection and soft tissue factors, while providing the necessary operating space for the surgery. This spinal osteotomy and orthopedic guide device enables precise positioning throughout the spinal osteotomy and orthopedic surgery, avoiding errors in judging the resection range based on human experience. Furthermore, compared to handheld guide techniques, it avoids the need for manual guide handling and positional displacement caused by various interferences during the surgical process.

[0022] Furthermore, by providing an auxiliary window on the second guide plate body, the present invention can match the position of the first window, thereby improving the accuracy of the placement of the second guide plate body.

[0023] Furthermore, both the first and second support members of the present invention are provided with connecting posts, which facilitates connection with the screw assembly.

[0024] Furthermore, the outer edges of the first guide plate body and the outer edges of the second guide plate body of the present invention are provided with a spinous process avoidance area and a pedicle avoidance area, which can better fit the surface of the spine.

[0025] Furthermore, the bottom surfaces of both the first guide plate body and the second guide plate body of the present invention are arc-shaped curved surfaces, which can better fit the surface of the spine. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0027] Figure 1 This is a schematic diagram of a spinal laminectomy guide plate structure according to the present invention;

[0028] Figure 2 This is a schematic diagram of a pedicle osteotomy guide plate according to the present invention;

[0029] Among them, 1—first guide plate body, 2—first window, 3—rib resection groove, 4—first spinous process avoidance area, 5—first pedicle avoidance area, 6—first support member, 21—second guide plate body, 22—second window, 23—auxiliary window, 24—second spinous process avoidance area, 25—second pedicle avoidance area, 26—second support member. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1 , Figure 2 As shown, a spinal osteotomy and orthopedic guide plate device of the present invention includes: a spinal laminectomy guide plate and a pedicle osteotomy guide plate.

[0035] The spinal laminectomy guide plate includes a first guide plate body 1 and a plurality of first support members 6. The plurality of first support members 6 are all fixed on the upper surface of the first guide plate body 1, and the first support members 6 can be connected to the screw assembly.

[0036] The first guide plate body 1 has a first window 2 inside, which is a rectangular cavity. The first window 2 can provide a precise resection range for the spinal lamina during surgery, limit the cutting depth, and avoid damage to the spinal cord blood vessels.

[0037] The first window 2 has rib resection grooves 3 on both sides perpendicular to the spine direction. The rib resection grooves 3 are C-shaped grooves used to determine the resection range of the ribs.

[0038] The pedicle osteotomy guide plate includes a second guide plate body 21 and multiple second support members 26. Each second support member 26 is fixed to the second guide plate body 21 and can be connected to a screw assembly. The second guide plate body 21 has a second window 22, which provides an accurate resection range for the pedicle osteotomy guide plate. Simultaneously, the second guide plate body 21 also has an auxiliary window 23 with the same position and size as the first window 2. The overlapping portion of the auxiliary window 23 and the second window 22 retains a thin wall formed by the second guide plate body 21 outside the second window 22. The auxiliary window 23 allows for further determination of the positioning of the second window 22 by using the resection range of the first window 2 when using the pedicle osteotomy guide plate, preventing displacement.

[0039] Both the first support member 6 and the second support member 26 are provided with connecting posts, which are cylindrical. The screw assembly includes a screw, the bottom of which is inserted into the vertebra, and a nut is installed on the screw. The connecting post is embedded in the top of the screw. Both the first support member 6 and the second support member 26 can create a suspension height between the guide plate body and the vertebra by connecting with the screw, which can reduce errors caused by intraoperative dissection and soft tissue factors, while providing operating space for surgery.

[0040] Both the first guide plate body 1 and the second guide plate body 21 have spinous process avoidance areas and pedicle avoidance areas on their outer edges, which can better match the vertebrae.

[0041] The outer edge of the first guide plate body 1 has a first spinous process avoidance area 4 and a first pedicle avoidance area 5, and the outer edge of the second guide plate body 21 has a second spinous process avoidance area 24 and a second pedicle avoidance area 25, for conforming to the surface of the spine. Since the spinal laminectomy guide plate is used to remove the ribs and laminae first, and the pedicle osteotomy guide plate is used to remove the pedicle osteotomy, the second pedicle avoidance area 25 on the pedicle osteotomy guide plate does not avoid the area where the pedicle to be removed is located. The first spinous process avoidance area 4, the first pedicle avoidance area 5, the second spinous process avoidance area 24, and the second pedicle avoidance area 25 are all arc-shaped notches. Protrusions are provided on the midline of both the first guide plate body 1 and the midline of the pedicle osteotomy guide plate for better matching with the vertebrae.

[0042] Optional, such as Figures 1 to 2 As shown, the bottom of the first support member 6 consists of two quadrangular prisms that are perpendicularly connected to the surface of the first guide plate body 1. The top of the first support member 6 is a rectangular body, the bottom of which is connected to the top of the quadrangular prisms, and the side of which is connected to the connecting column.

[0043] Optional, such as Figure 2 As shown, the bottom of the second support member 26 is a bottom column that is perpendicularly connected to the upper surface of the second guide plate body 21, and the top of the second support member 26 consists of two mutually perpendicular top columns; the top columns include a first top column and a second top column, one side of the first top column is perpendicularly connected to the bottom column, the other side of the first top column is perpendicularly connected to the second top column, and the other end of the second top column is fixedly connected to the connecting column.

[0044] Example

[0045] In this embodiment, there are four of each of the first support member 6 and the second support member 26. The first support member 6 is fixed at the four corners of the first guide plate body 1; the second support member 26 is fixed at the four corners of the second guide plate body 21.

[0046] In this embodiment, the spinal osteotomy and orthopedic guide plate device is made by 3D printing.

[0047] The method of using a vertebral surgical guide system of the present invention includes the following steps:

[0048] First, the patient's vertebrae are scanned to obtain CT or MRI data. The obtained image data is then imported into medical image processing software to reconstruct a three-dimensional model of the vertebrae. Based on the three-dimensional model of the patient's vertebrae, 3D printing technology is used to determine and print the spinal laminectomy guide plate and pedicle osteotomy guide plate.

[0049] During the surgery, four screws are first inserted into the patient's body. The connecting posts on the four first support members 6 are then connected to the four screws and tightened with four nuts. The rib resection area is determined through the rib resection groove 3, and the ribs on both sides are removed. Then, the lamina resection area is determined through the first window 2, and the corresponding lamina is removed.

[0050] Remove the four nuts, then detach the spinal laminectomy guide plate from the screws. Connect the connecting posts on the four second support members 26 of the pedicle osteotomy guide plate to the four screws and tighten them with the four nuts. During installation, use the auxiliary window 23 to assist in positioning the area of ​​the resected vertebral laminectomy. Perform pedicle osteotomy at the corresponding location through the second window 22.

[0051] Finally, remove the four nuts and then remove the pedicle osteotomy guide plate from the screws to complete the operation of removing all bone parts in the vertebral correction surgery.

Claims

1. A guide plate device for spinal osteotomy orthopedics, characterized by, The application relates to a spinal lamina resection guide plate and a pedicle osteotomy resection guide plate. The spinal lamina resection guide plate comprises a first guide plate body (1) and a plurality of first supporting pieces (6), each of which is fixed on the first guide plate body (1) and is used for being connected with a screw; a first window (2) is arranged on the first guide plate body (1) and is used for positioning a spinal lamina resection range; rib resection grooves (3) are arranged at edges of the first window (2) of the first guide plate body (1) and are used for determining a rib resection range; and the rib resection grooves (3) are arranged on two sides of the first window (2) in a symmetrical mode. The pedicle osteotomy resection guide plate comprises a second guide plate body (21) and a plurality of second supporting pieces (26), each of which is fixed on the second guide plate body (21) and is used for being connected with a screw; a second window (22) is arranged on the second guide plate body (21) and is used for positioning a pedicle osteotomy guide plate resection range. The spinal lamina resection guide plate and the pedicle osteotomy resection guide plate share a screw assembly. The first window (2) is a quadrangular prism cavity, and the second window (22) is a quadrangular frustum cavity which is expanded upwards and contracted downwards. An auxiliary window (23) is further arranged on the second guide plate body (21), an edge line of the auxiliary window (23) is matched with an edge line of the first window (2), the auxiliary window (23) is used for accurately positioning the position of the second guide plate body (21), and the edge line of the auxiliary window (23) avoids the edge line of the second window (22). The rib resection groove (3) is a C-shaped groove.

2. The guide plate device for spinal osteotomy and correction according to claim 1, wherein Connecting columns are arranged on the first supporting pieces (6) and the second supporting pieces (26) and are used for connecting the screw assembly.

3. The guide plate device for spinal osteotomy orthopedics according to claim 1, characterized in that, The connecting column is a cylindrical column.

4. The guide plate device for spinal osteotomy and correction according to claim 3, wherein Lateral edges of the first guide plate body (1) and the second guide plate body (21) are provided with spinous process avoiding areas and pedicle avoiding areas and are used for being attached to a spinal column surface.

5. The guide plate device for spinal osteotomy orthopedics according to claim 1, wherein The material of the spinal osteotomy orthopedic guide plate device is resin or metal.

6. The guide plate device for spinal osteotomy orthopedics according to claim 1, wherein The first guide plate body (1) and the second guide plate body (21) are plate-shaped, and the number of the first supporting pieces (6) and the second supporting pieces (26) is four.

7. The guide plate device for spinal osteotomy according to claim 1, wherein Bottom surfaces of the first guide plate body (1) and the second guide plate body (21) are arc-shaped curved surfaces and are used for being attached to a spinal column.

8. The guide plate device for spinal osteotomy and correction according to claim 1, wherein ​

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