3D printing spine osteotomy navigation guide plate

Abstract

The utility model belongs to the technical field of spine osteotomy operation auxiliary devices, and particularly relates to a 3D printing spine osteotomy navigation guide plate which comprises a first guide plate and a second guide plate arranged at the rear end of the first guide plate, and hollow supports are integrally connected to the left side and the right side of the upper portion of the front end of the first guide plate and the left end and the right end of the upper portion of the rear end of the second guide plate. A fixing sleeve is arranged on one side of the hollow bracket; a first opening hole is integrally formed in one side of the fixing sleeve, an internal thread sleeve is integrally connected to one side of the fixing sleeve, a second opening hole is integrally formed in the front end of the internal thread sleeve, a locking block is movably connected to the interior of the second opening hole, and a screw shaft is connected to the interior of the rear end of the internal thread sleeve in a screwed mode; when the screw is used, the fixing sleeve and the screw can be well connected, the problems that in the prior art, a nut is prone to falling off and losing and not easy to find, and smooth operation is affected can be effectively solved, and the screw is better in use.

Description

Technical Field

[0001] The utility model belongs to the technical field of spinal osteotomy surgical auxiliary devices, and particularly relates to a 3D printed spinal osteotomy navigation guide plate. Background Technique

[0002] With the development of 3D printing technology, its application in the medical field is becoming increasingly widespread. In the orthopedic field, it has been widely used in preoperative planning and design, printing and implantation of artificial individualized prostheses, pedicle screw placement guide plates, etc. It has the advantages of improving the accuracy of surgery and reducing the risk of iatrogenic injury. Although the traditional freehand spinal osteotomy method has been applied clinically, the guide plate technology has also been preliminarily tried.

[0003] In the existing publicly disclosed patented technology, the Chinese utility model patent with the publication number CN218899591U discloses a guide plate device for spinal osteotomy and orthosis. Each first support member is fixed on the first guide plate body and used for connecting with screws; a first window is opened on the first guide plate body for positioning the resection range of the spinal lamina; a rib resection groove is opened at the edge of the first window of the first guide plate body for determining the rib resection range; the number of rib resection grooves is two and they are oppositely arranged on both sides of the first window; each second support member is fixed on the second guide plate body and used for connecting with screws; a second window is opened on the second guide plate body for positioning the resection range of the pedicle osteotomy guide plate; the number of second windows is two and they are oppositely arranged. The spinal lamina resection guide plate and the pedicle osteotomy resection guide plate share a set of screw components, which can avoid the judgment error of the resection range caused by manual experience, and at the same time can avoid holding the guide plate by hand and avoid the position deviation of the guide plate during the operation.

[0004] However, when the existing guide plate device for spinal osteotomy and orthosis is used, after driving four screws into the patient's body, the four connecting columns on the guide plate are then connected to the four screws and locked and fixed by four nuts. Similarly, when removing the guide plate from the screws, four nuts also need to be removed first. Among them, the nuts are small in volume and are independent individuals. During the screwing and disassembling process before and after use, the small-sized nuts are easy to fall and get lost, or fall into the surgical incision and are not easy to find, which affects the smooth progress of the operation. Therefore, the utility model makes a further new design based on the existing guide plate device for spinal osteotomy and orthosis. Content of the Utility Model

[0005] To solve the above problems existing in the prior art, the present utility model provides a 3D printed spinal osteotomy navigation guide plate, which can better realize the connection between the fixing sleeve and the screw during use, and then complete the fixed installation of the first guide plate and the second guide plate. Moreover, during the connection process, it can effectively avoid the problem that in the prior art, when using a guide plate device for spinal osteotomy orthopedics, the fixing sleeve and the screw are connected through a nut. The nut is small in volume and is an independent individual. During the screwing and disassembling process before and after use, the nut with a small volume is easy to fall off and be lost, or fall into the surgical incision and is not easy to find, which affects the smooth progress of the operation. It has better use effect.

[0006] To achieve the above object, the present utility model provides the following technical solution: A 3D printed spinal osteotomy navigation guide plate includes a first guide plate and a second guide plate provided at the rear end of the first guide plate. Openings are integrally formed at the rear end of the first guide plate and the front end of the second guide plate. A first spinous process avoidance area is integrally formed at the front end of the first guide plate. A second spinous process avoidance area is integrally formed at the rear end of the second guide plate. Vertebral arch root avoidance areas a are integrally formed on the left and right sides of the first guide plate and the second guide plate. Vertebral arch root avoidance areas b are integrally formed on the left and right sides of the rear end of the first guide plate and the front end of the second guide plate. Rib resection grooves are integrally formed on the left and right sides of the rear end of the first guide plate and the front end of the second guide plate, and the rib resection grooves communicate with the openings.

[0007] Hollow brackets are integrally connected to the upper left and right sides of the front end of the first guide plate and the upper left and right ends of the rear end of the second guide plate. A fixing sleeve is provided on one side of the hollow bracket.

[0008] A first opening is integrally formed on one side of the fixing sleeve. An internal thread sleeve is integrally connected to one side of the fixing sleeve. A second opening is integrally formed inside the front end of the internal thread sleeve and the second opening communicates with the first opening. A locking block is movably connected inside the second opening. A concave hole is integrally formed inside the rear end of the locking block. A screw shaft is threadedly connected to the inside of the rear end of the internal thread sleeve. A connecting shaft is integrally connected to the front end of the screw shaft and the connecting shaft is rotatably connected to the concave hole. A screw knob is integrally connected to the rear end of the screw shaft.

[0009] As a preferred technical solution of the 3D printed spinal osteotomy navigation guide plate of the present utility model, slots are formed on both sides of the front end of the first guide plate and on the left and right sides of the rear end of the second guide plate.

[0010] As a preferred technical solution of the 3D printed spinal osteotomy navigation guide plate of the present utility model, the hollow bracket is of an "L" - shaped structure. A support block is integrally connected to one side of the upper end of the hollow bracket, and the end of the support block different from the hollow bracket is integrally connected to the fixing sleeve.

[0011] As a preferred technical solution of the 3D printing spinal osteotomy navigation guide plate of the present utility model, both the first opening and the second opening locking blocks are rectangular structures.

[0012] As a preferred technical solution of the 3D printing spinal osteotomy navigation guide plate of the present utility model, both the concave hole and the connecting shaft are "convex"-shaped structures.

[0013] As a preferred technical solution of the 3D printing spinal osteotomy navigation guide plate of the present utility model, a torsion groove is provided at the rear end of the screw knob.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model is composed of a first guide plate and a second guide plate, and fixing sleeves are provided on both the first guide plate and the second guide plate. At the same time, an internal thread sleeve, a locking block and a screw shaft are further provided on the fixing sleeve. When in use, after the screw is fixed in the patient's body, the upper part of the screw can pass through the fixing sleeve to realize the preliminary positioning connection between the first guide plate and the second guide plate and the screw. Then, the screw shaft can be rotated inward, and the locking block can be further driven to move horizontally forward through the connecting screw shaft. The screw passing through the fixing sleeve can be further locked and fixed by the locking block to complete the fixed installation operation of the first guide plate and the second guide plate. Similarly, by rotating the screw shaft outward, the locking block can be driven to move horizontally backward, the fixed state of the fixing sleeve can be released, and the first guide plate and the second guide plate can be further removed;

[0016] Through the above technical solution, the connection between the fixing sleeve and the screw can be preferably realized, and then the fixed installation of the first guide plate and the second guide plate can be completed. And during the connection process, it can effectively avoid the problem that in the prior art, when using a guide plate device for spinal osteotomy orthopedics, the fixing sleeve is connected to the screw through a nut. The nut is small in volume and is an independent individual. During the process of screwing and disassembling before and after use, the nut with a small volume is easy to fall off and be lost, or fall into the surgical incision and is not easy to find, which affects the smooth progress of the operation. The use is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the connection between the hollow brackets of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the connection between the hollow bracket and the internal thread sleeve of the present utility model;

[0021] Figure 4 This is a schematic cross-sectional structure diagram of the connection between the hollow bracket and the internal thread sleeve of the present utility model.

[0022] In the figure: 1. First guide plate; 2. Second guide plate; 3. Opening; 4. First spinous process avoidance area; 5. Second spinous process avoidance area; 6. Pedicle avoidance area a; 7. Pedicle avoidance area b; 8. Groove; 9. Hollow bracket; 10. Support block; 11. Fixed sleeve; 12. First opening; 13. Internal thread sleeve; 14. Second opening; 15. Locking block; 16. Concave hole; 17. Coupling shaft; 18. Screw shaft; 19. Screw knob; 20. Torsion groove; 21. Rib resection groove. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment

[0025] Please refer to Figures 1-4 , the present utility model provides the following technical solutions: A 3D printed spinal osteotomy navigation guide plate includes a first guide plate 1 and a second guide plate 2 provided at the rear end of the first guide plate 1. Openings 3 are integrally formed at the rear end of the first guide plate 1 and the front end of the second guide plate 2. A first spinous process avoidance area 4 is integrally formed at the front end of the first guide plate 1. A second spinous process avoidance area 5 is integrally formed at the rear end of the second guide plate 2. Pedicle avoidance areas a 6 are integrally formed on the left and right sides of the first guide plate 1 and the left and right sides of the second guide plate 2. Pedicle avoidance areas b 7 are integrally formed on the left and right sides of the rear end of the first guide plate 1 and the left and right sides of the front end of the second guide plate 2. Rib resection grooves 21 are integrally formed on the left and right sides of the rear end of the first guide plate 1 and the left and right sides of the front end of the second guide plate 2, and the rib resection grooves 21 communicate with the openings 3. Among them, both the first guide plate 1 and the first guide plate 1 are made by 3D printing. The opening 3 is used to determine the scope of lamina resection, and the rib resection groove 21 is used to determine the scope of rib resection. The first spinous process avoidance area 4 and the second spinous process avoidance area 5 are used to avoid the spinous process part. The pedicle avoidance area a 6 and the pedicle avoidance area b 7 are used to avoid the pedicle part for adaptation to the use of the spine.

[0026] Referring to Figure 1 As shown, further, grooves 8 are formed on both sides of the front end of the first guide plate 1 and on the left and right sides of the rear end of the second guide plate 2. Among them, the grooves 8 are used for guiding the resection of the vertebra at this position by a sliding knife, an ultrasonic sliding sleeve or a reciprocating saw, and at the same time, the exposed vision of the vertebra can be further enlarged.

[0027] Referring to Figure 1 and Figure 2 as shown, further, hollow brackets 9 are integrally connected to the upper left and right sides of the front end of the first guide plate 1 and the upper left and right ends of the rear end of the second guide plate 2. The hollow brackets 9 are in an "L" shape. A support block 10 is integrally connected to one side of the upper end of the hollow bracket 9, and one end of the support block 10 different from the hollow bracket 9 is integrally connected to a fixing sleeve 11. A fixing sleeve 11 is arranged on one side of the hollow bracket 9. Among them, the hollow bracket 9 and the support block 10 are used for connecting and supporting the fixing sleeve 11, and the hollow bracket 9 is designed with a hollow structure, which is used in cooperation with the slot 8, facilitating the guiding and resection of the vertebra at the position of the slot 8, and at the same time, it can further expand the exposed vision of the vertebra.

[0028] Referring to Figure 2 , Figure 3 and Figure 4 as shown, further, a first opening 12 is integrally formed on one side of the fixing sleeve 11. An internal thread sleeve 13 is integrally connected to one side of the fixing sleeve 11. A second opening 14 is integrally formed inside the front end of the internal thread sleeve 13 and the second opening 14 communicates with the first opening 12. A locking block 15 is movably connected inside the second opening 14. The first opening 12, the second opening 14 and the locking block 15 are all in a rectangular structure. A concave hole 16 is integrally formed inside the rear end of the locking block 15. A screw shaft 18 is screwed and connected to the inside of the rear end of the internal thread sleeve 13. A connecting shaft 17 is integrally connected to the front end of the screw shaft 18 and the connecting shaft 17 is rotatably connected to the concave hole 16. Both the concave hole 16 and the connecting shaft 17 are in a "convex" shape. A screw knob 19 is integrally connected to the rear end of the screw shaft 18. A torsion groove 20 is formed at the rear end of the screw knob 19. Among them, the fixing sleeve 11 can be sleeved on the upper part of the exposed screw. Through the further setting and cooperation of the internal thread sleeve 13, the locking block 15 and the screw shaft 18, the screw passing through the fixing sleeve 11 can be further locked and fixed. Through the rotational cooperation of the concave hole 16 and the connecting shaft 17, the rotating screw shaft 18 can further drive the locking block 15 to move horizontally back and forth. And through the screw knob 19 with the torsion groove 20, it is convenient to further screw and rotate the screw shaft 18, and the use effect is better.

[0029] In this embodiment, the utility model is composed of a first guide plate 1 and a second guide plate 2. Fixed sleeves 11 are provided on both the first guide plate 1 and the second guide plate 2. At the same time, an internal thread sleeve 13, a locking block 15, and a screw shaft 18 are further provided on the fixed sleeve 11. During use, after the screw is fixed in the patient's body, the upper part of the screw can pass through the fixed sleeve 11 to achieve a preliminary positioning connection between the first guide plate 1 and the second guide plate 2 and the screw. Then, the screw shaft 18 can be rotated inward. Through the connecting screw shaft 18, the locking block 15 can be further driven to move horizontally forward. Through the locking block 15, the screw passing through the fixed sleeve 11 can be further locked and fixed to complete the fixed installation operation of the first guide plate 1 and the second guide plate 2. Similarly, by rotating the screw shaft 18 outward, the locking block 15 can be driven to move horizontally backward, the fixed state of the fixed sleeve 11 can be released, and the first guide plate 1 and the second guide plate 2 can be further removed; through the above technical solution, the connection between the fixed sleeve 11 and the screw can be better realized, and then the fixed installation of the first guide plate 1 and the second guide plate 2 can be completed. And during the connection process, it can effectively avoid the problem that in the existing guide plate device for spinal osteotomy orthopedics, when in use, the fixed sleeve 11 and the screw are connected through a nut. The nut is small in volume and is an independent individual. During the process of screwing and disassembling before and after use, the nut with a small volume is easy to fall and be lost, or fall into the surgical incision and is not easy to find, which affects the smooth progress of the operation. The use is better.

[0030] Usage process and working principle of the utility model: During use, scan the patient's vertebra to obtain CT image data, import the obtained data into medical image processing software, construct a three-dimensional model of the vertebra, and print out the matching first guide plate 1 and second guide plate 2 for spinal laminectomy using 3D printing technology according to the three-dimensional model;

[0031] During the operation, first drive four screws into the patient's body, then respectively sleeved the two fixed sleeves 11 on the first guide plate 1 and the two fixed sleeves 11 on the second guide plate 2 with the four screws, and then use a hand or with the help of a hex wrench to turn the knob 19, the screw shaft 18, and the coupling shaft 17. The screw shaft 18 in the rotating state can further drive the locking block 15 in the first opening 12 to move horizontally forward and extend through the coupling shaft 17, so as to further lock and fix the screw passing through the fixed sleeve 11 through the locking block 15, and then complete the fixed installation operation of the first guide plate 1 and the second guide plate 2;

[0032] After that, determine the resection range of the rib through the rib resection groove 21 on the first guide plate 1 and the second guide plate 2 and perform the resection, and determine the resection range of the lamina through the opening 3 and perform the resection;

[0033] After the operation, similarly, the knob 19, the screw shaft 18, and the coupling shaft 17 can be rotated outward to retract the locking block 15 into the first opening 12, so as to release the fixed state between the fixed sleeve 11 and the fixed sleeve 11, and then remove the first guide plate 1 and the second guide plate 2.

[0034] In addition, the content not described in detail in this embodiment belongs to the scope of the prior art and common general knowledge.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A 3D printed spinal osteotomy navigation guide, characterized in that: The invention comprises a first guide plate (1) and a second guide plate (2) arranged at the rear end of the first guide plate (1), the rear end of the first guide plate (1) and the front end of the second guide plate (2) are both integrally provided with an opening (3), the front end of the first guide plate (1) is integrally provided with a first spinous process avoidance area (4), the rear end of the second guide plate (2) is integrally provided with a second spinous process avoidance area (5), the left and right sides of the first guide plate (1) and the left and right sides of the second guide plate (2) are both integrally provided with a pedicle avoidance area a (6), the left and right sides of the rear end of the first guide plate (1) and the left and right sides of the front end of the second guide plate (2) are both integrally provided with a pedicle avoidance area b (7), the left and right sides of the rear end of the first guide plate (1) and the left and right sides of the front end of the second guide plate (2) are both integrally provided with a rib resection groove (21), and the rib resection groove (21) is communicated with the opening (3); The left and right sides of the upper front end of the first guide plate (1) and the left and right ends of the upper rear end of the second guide plate (2) are integrally connected with a hollow bracket (9), and a fixing sleeve (11) is provided on one side of the hollow bracket (9); A first opening (12) is integrally formed on one side of the fixing sleeve (11), an internal threaded sleeve (13) is integrally connected to one side of the fixing sleeve (11), a second opening (14) is integrally formed inside the front end of the internal threaded sleeve (13), and the second opening (14) is communicated with the first opening (12), a locking block (15) is movably connected inside the second opening (14), a concave hole (16) is integrally formed inside the rear end of the locking block (15), a screw shaft (18) is screwedly connected inside the rear end of the internal threaded sleeve (13), a connecting shaft (17) is integrally connected to the front end of the screw shaft (18), and the connecting shaft (17) is rotatably connected to the concave hole (16), and a screw button (19) is integrally connected to the rear end of the screw shaft (18).

2. A 3D printed spinal osteotomy navigation guide according to claim 1, characterized in that: Both sides of the front end of the first guide plate (1) and both sides of the rear end of the second guide plate (2) are provided with slots (8).

3. A 3D printed spinal osteotomy navigation guide according to claim 1, characterized in that: The hollow bracket (9) is an "L"-shaped structure, one side of the upper end of the hollow bracket (9) is integrally connected with a support block (10), and one end of the support block (10) different from the hollow bracket (9) is integrally connected with a fixing sleeve (11).

4. A 3D printed spinal osteotomy navigation guide according to claim 1, characterized in that: The first opening (12), the second opening (14) and the locking block (15) are all rectangular structures.

5. The 3D printed spinal osteotomy navigation guide according to claim 1, characterized in that: The concave hole (16) and the connecting shaft (17) are both convex-shaped structures.

6. A 3D printed spinal osteotomy navigation guide according to claim 1, characterized in that: A twist groove (20) is formed at the rear end of the screw button (19).

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