A spinal internal fixation nail connection structure

Abstract

The present application discloses a spinal internal fixation nail connection structure, which belongs to the field of medical devices, including a fixation nail body, a connection column is fixedly installed on the top of the fixation nail body, and a first screw groove is provided on the top of the connection column, and the side wall of the first screw groove is provided with two symmetrically distributed inlets and outlets, a support rod is provided in the first screw groove, a positioning stud is provided in the first screw groove, and a connector is provided between two adjacent support rods; the connector includes a splicing column arranged between two adjacent support rods, thread grooves are provided on both sides of the splicing column, and screws are provided in the two thread grooves. The present application connects multiple fixation nail bodies through support rods, and connects two adjacent support rods through connectors, which can play a role in supporting and stabilizing the fixation nail bodies, and the connector size is adjustable, which is convenient for connecting support rods at different distances, which is conducive to improving the use range of the equipment.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and more specifically, to a spinal internal fixation nail connection structure. Background Art

[0002] Bone nails are non-active surgical metal implants for bone joining, consisting of cortical and cancellous bone nails, used for stabilization of new fractures, revision surgery, joint fusion, spine, and reconstruction of small bones of the foot, ankle, and toes. They can be used in adult and pediatric patients.

[0003] The patent with application number 202223407917.2 discloses a spinal fixation nail rod, including an implant nail and an implant rod; the implant rod includes a connecting rod and a cross-connecting rod, the connecting rod is arranged along the spine direction, the number of the connecting rods is greater than one, and the connecting rods are connected by a cross-connecting rod; the number of the implant nails is greater than one, and multiple implant nails are connected by the connecting rod, and the connecting rod and the implant rod are integrally formed and fixedly connected, and the connecting rod has a curvature for matching the curvature of the spine. The implant nail and the implant rod of the utility model are integrally formed and connected, and the implant rod has a curvature, which can not only determine the positions of multiple implant nails at one time when the nails are placed, but also determine the nail placement position through multiple implant nails, making the nail placement more accurate. Since the implant rod is bent in advance, this application can reduce intraoperative operations, reduce the internal stress generated by the rebound of the implant rod, and increase the stability and service life of the implant nail.

[0004] With respect to the above-mentioned related technologies, the insertion rod is connected by a connecting rod and a cross-connecting rod. The cooperation of the connecting rod and the cross-connecting rod is conducive to increasing the stability of the installation of the insertion rod, but the size of the cross-connecting rod is fixed and cannot be adjusted, which reduces the scope of use of the product. Utility Model Content

[0005] In order to solve the above problems, the present application provides a spinal internal fixation nail connection structure, which adopts the following technical solutions:

[0006] A spinal internal fixation nail connection structure, comprising a fixation nail body, a connection column fixedly mounted on the top of the fixation nail body, and a first screw groove is provided on the top of each connection column, two symmetrically distributed inlets and outlets are provided on the side wall of the first screw groove, a support rod is provided in the first screw groove, a positioning stud is provided in the first screw groove, and a connector is provided between two adjacent support rods;

[0007] The connector includes a splicing column arranged between two adjacent support rods, threaded grooves are opened on both sides of the splicing column, and screws are arranged in the two threaded grooves, connecting rods are hinged at opposite ends of the two screws, and buckles are fixedly installed at opposite ends of the two connecting rods, two buckle covers are arranged on the side walls of the support rods in the same group, fixing components are arranged on the tops of the two buckles, and positioning components are arranged between the two screws and the splicing columns.

[0008] By adopting the above technical solution, when the device is used, the medical staff places the support rod in the first screw groove opened at the top of the connecting column. The inner wall of the first screw groove is provided with an inlet and outlet to facilitate the passage of the support rod. Then, the staff places the fixing nail body in the patient's body according to the actual situation, and then screws the positioning stud into the first screw groove opened at the top of the connecting column to fix the support rod. When multiple fixing nail bodies are installed, the medical staff places the connector between two adjacent support rods, and by rotating the two screws, the distance between the two buckles and the splicing column is adjusted, thereby playing the role of the connector length, which is convenient for the connector to connect two adjacent support rods at different distances. The connection and fixation are carried out. When the connector length is adjusted, the medical staff buckles the buckle on the side wall of the support rod. Then, by rotating the splicing column, the two buckles are sleeved on the side walls of the same group of support rods, which can limit the rotation of the screw rod, facilitate the stable rotation of the splicing column, and then make the two screw rods move into the same group of thread grooves, thereby pulling the buckle ring to achieve the effect of connecting and fixing the two support rods. When the connector adjustment is completed, the positioning component is operated to fix the splicing column and the screw rod, which is beneficial to maintaining the stability of the connector. When the screw is fixed, the fixing component is operated to position the buckle ring, which helps to prevent the buckle ring from sliding on the side wall of the support rod.

[0009] Furthermore, the fixing assembly includes a first bolt arranged above the two buckling rings, and a first mounting groove is provided on the surface of the two buckling rings. A second screw groove matching the first bolt of the same group is provided on the inner wall of the bottom end of the first mounting groove. The first bolt is located in the second screw groove of the same group, and the end of the first bolt is in contact with the side wall of the support rod of the same group.

[0010] By adopting the above technical solution, after the buckle is installed on the side wall of the support rod, the medical staff places the first bolt in the first installation groove, rotates the first bolt to screw the first bolt into the second screw groove, and then makes the end of the first bolt contact the side wall of the support rod. The friction force generated by the first bolt and the support rod plays a role in limiting the positioning buckle, which helps to prevent the buckle from sliding on the side wall of the support rod.

[0011] Furthermore, the positioning assembly includes two second bolts arranged on the side walls of the splicing column, and the two second bolts are symmetrically distributed on the side walls of the splicing column. The side walls at both ends of the splicing column are provided with second installation grooves distributed in a circular array, and the inner walls at the bottom ends of the second installation grooves are provided with third screw grooves matching the second bolts in the same group. The second bolt is located in one of the third screw grooves on the same side, and the end of the second bolt contacts the side wall of the screw rod in the same group.

[0012] By adopting the above technical solution, when the distance between the screw rod and the splicing column is adjusted, the medical staff places the second bolt in the second installation groove, so that the second bolt is screwed into the third screw groove of the same group, and then the end of the second bolt is brought into contact with the side wall of the screw rod of the same group, which can play a role in positioning and fixing the screw rod, and helps to avoid the rotation of the screw rod after the equipment is installed, which is beneficial to improve the stability of the connector. The side wall of the splicing column is opened by multiple groups of second installation grooves and third screw grooves, which facilitates the subsequent rotation of the splicing column without affecting the installation of the second bolt to fix the screw rod.

[0013] Furthermore, sealing gaskets distributed in a ring array are fixedly installed on the inner walls of the second installation grooves, and the cross-sections of the sealing gaskets are all triangular.

[0014] By adopting the above technical solution, the second installation groove is sealed by the arrangement of a sealing gasket, which facilitates the subsequent use of the equipment.

[0015] Furthermore, a collar is fixedly mounted on the middle portion of the splicing column, and toggle blocks distributed in a ring array are fixedly mounted on the side walls of the collar.

[0016] By adopting the above technical solution, the side wall of the splicing column is provided by the collar, and the side wall of the collar is provided by a plurality of toggle blocks, so that it is convenient for medical personnel to rotate the splicing column.

[0017] Furthermore, the side wall of the support rod is provided with a plurality of groups of limiting rings distributed in a linear array, and there are two limiting rings in the same group and both are located on both sides of the connecting column in the same group.

[0018] By adopting the above technical solution, the side wall of the support rod plays a role in positioning the connecting column through the setting of the limiting ring, and can also play a role in limiting the sliding of the connecting column.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] (1) In the present application, multiple fixing nail bodies are connected by a support rod, and two adjacent support rods are connected by a connector, which can play a role in supporting and stabilizing the fixing nail bodies. The size of the connector is adjustable, which is convenient for connecting support rods at different distances, which is beneficial to improving the use range of the equipment.

[0021] (2) In the present application, the buckle ring is hinged to the screw on the same side, which makes it easy for medical personnel to adjust the angle of the connector, thereby facilitating the connection and fixation of the fixing nail body in different orientations, which is beneficial to improving the use effect of the product.

[0022] (3) In the present application, the screw rod and the splicing column are fixed by a positioning assembly, which plays the role of positioning and fixing the screw rod, helps to avoid looseness after the distance between the screw rod and the splicing column is adjusted, and is beneficial to improving the stability of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a spinal internal fixation nail connection structure;

[0024] Figure 2 For this application Figure 1 A magnified view of middle;

[0025] Figure 3 For this application Figure 1 Enlarged view of middle B;

[0026] Figure 4 is a cross-sectional view of the connector in this application;

[0027] Figure 5 For this application Figure 4 Enlarged view of C in the middle.

[0028] Description of the numbers in the figure:

[0029] 1. Fixing nail body; 2. Connecting column; 3. First screw groove; 4. Inlet and outlet; 5. Positioning stud; 6. Connector; 61. Retaining ring; 611. First mounting groove; 612. Second screw groove; 62. Connecting rod; 63. Screw rod; 64. Splicing column; 641. Second mounting groove; 642. Threaded groove; 643. Third screw groove; 7. Support rod; 8. First bolt; 9. Second bolt. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] See also Figure 1-5 A spinal internal fixation nail connection structure comprises a fixation nail body 1, a connecting column 2 is fixedly installed on the top of the fixation nail body 1, and a first screw groove 3 is opened on the top of the connecting column 2, and two symmetrically distributed inlets and outlets 4 are opened on the side wall of the first screw groove 3, a support rod 7 is arranged in the first screw groove 3, a positioning stud 5 is arranged in the first screw groove 3, a connector 6 is arranged between two adjacent support rods 7, and a plurality of groups of limiting rings distributed in a linear array are arranged on the side wall of the support rod 7, and there are two limiting rings in the same group and they are both located on both sides of the connecting column 2 in the same group.

[0035] When the device is in use, the medical staff places the support rod 7 in the first screw groove 3 opened at the top of the connecting column 2. The inner wall of the first screw groove 3 is provided with an inlet and outlet 4 to facilitate the passage of the support rod 7. Then, the staff places the fixing nail body 1 in the patient's body according to the actual situation, and then screws the positioning stud 5 into the first screw groove 3 opened at the top of the connecting column 2 to fix the support rod 7. When multiple fixing nail bodies 1 are installed, the medical staff places the connector 6 between two adjacent support rods 7. The side wall of the support rod 7 is provided with a limiting ring to position the connecting column 2 and limit the sliding of the connecting column 2.

[0036] The connector 6 includes a splicing column 64 arranged between two adjacent support rods 7, threaded grooves 642 are provided on both sides of the splicing column 64, and screws 63 are provided in the two threaded grooves 642, the opposite ends of the two screws 63 are hinged with connecting rods 62, and the opposite ends of the two connecting rods 62 are fixedly installed with buckles 61, the two buckles 61 are covered on the side walls of the same group of support rods 7, and a positioning component is provided between the two screws 63 and the splicing column 64, the positioning component includes two second bolts 9 arranged on the side walls of the splicing column 64, the two second bolts 9 are symmetrically distributed on the side walls of the splicing column 64, the side walls at both ends of the splicing column 64 are provided with second installation grooves 641 distributed in a circular array, and the inner wall of the bottom end of the second installation groove 641 is provided with a third screw groove 643 matching the second bolt 9 in the same group, the second bolt 9 is located in one of the third screw grooves 643 on the same side, and the end of the second bolt 9 contacts the side wall of the same group of screws 63.

[0037] When the installation of multiple fixing nail bodies 1 is completed, the medical staff adjusts the distance between the two buckle rings 61 and the splicing column 64 between the two adjacent support rods 7 between the connector 6 by rotating the two screw rods 63, thereby playing a role in adjusting the length of the connector 6, so that the connector 6 can connect and fix two adjacent support rods 7 at different distances. When the length adjustment of the connector 6 is completed, the medical staff buckles the buckle ring 61 on the side wall of the support rod 7, and then rotates the splicing column 64. Since the two buckle rings 61 are sleeved on the side wall of the same group of support rods 7, the rotation of the screw rod 63 can be limited, which is convenient for the stable rotation of the splicing column 64, thereby moving the two screws 63 into the same group of thread grooves 642. Then, it plays the role of pulling the buckle ring 61 to achieve the effect of connecting and fixing the two support rods 7. When the connector 6 is adjusted, the medical staff places the second bolt 9 in the second installation groove 641 to screw the second bolt 9 into the third screw groove 643 of the same group. Then, the end of the second bolt 9 is brought into contact with the side wall of the screw rod 63 of the same group, which can play the role of positioning and fixing the screw rod 63, and helps to avoid the rotation of the screw rod 63 after the equipment is installed. It is beneficial to improve the stability of the connector 6. The side wall of the splicing column 64 is opened through multiple groups of second installation grooves 641 and third screw grooves 643, which facilitates the subsequent rotation of the splicing column 64 without affecting the installation of the second bolt 9 to fix the screw rod 63.

[0038] The inner walls of the second mounting grooves 641 are fixedly mounted with sealing gaskets distributed in a circular array, and the cross-sections of the sealing gaskets are all triangular. The second mounting grooves 641 are provided with sealing gaskets to close the second mounting grooves 641, which is convenient for subsequent use of the equipment. A ring is fixedly sleeved on the middle part of the splicing column 64, and toggle blocks distributed in a circular array are fixedly mounted on the side walls of the ring. The side walls of the splicing column 64 are provided with the ring, and the side walls of the ring are provided with multiple toggle blocks, which is convenient for medical personnel to rotate the splicing column 64.

[0039] The tops of the two buckles 61 are each provided with a fixing assembly, which includes a first bolt 8 arranged above the two buckles 61, the surfaces of the two buckles 61 are each provided with a first mounting groove 611, the inner walls of the bottom ends of the first mounting groove 611 are each provided with a second screw groove 612 matching the first bolt 8 of the same group, the first bolt 8 is located in the second screw groove 612 of the same group, and the ends of the first bolt 8 are in contact with the side walls of the same group of support rods 7. When the buckle 61 is sleeved on the side walls of the support rods 7, the medical staff places the first bolt 8 in the first mounting groove 611, and screws the first bolt 8 into the second screw groove 612 by rotating the first bolt 8, and then makes the end of the first bolt 8 contact with the side walls of the support rods 7. The friction force generated by the first bolt 8 and the support rods 7 plays a role in limiting the positioning of the buckle 61, which helps to prevent the buckle 61 from sliding on the side walls of the support rods 7, and the cooperation of the screw rod 63, the splicing column 64 and the connecting rod 62 can play a role in limiting the positioning of the buckle 61, which is convenient for the subsequent positioning of the buckle 61.

[0040] The implementation principle of the embodiment of the present application is as follows: when the device is used, the medical staff places the support rod 7 in the first screw groove 3 opened at the top of the connecting column 2. The inner wall of the first screw groove 3 is provided with the inlet and outlet 4 to facilitate the passage of the support rod 7. Then, the staff places the fixing nail body 1 in the patient's body according to the actual situation, and then screws the positioning stud 5 with the first screw groove 3 opened at the top of the connecting column 2 to fix the support rod 7. When multiple fixing nail bodies 1 are installed, the medical staff rotates the two screws 63 between two adjacent support rods 7 between the connectors 6 to adjust the distance between the two buckles 61 and the splicing column 64, thereby playing the role of the length of the connector 6, so that the connector 6 can connect and fix two adjacent support rods 7 at different distances. When the length of the connector 6 is adjusted, the medical staff buckles the buckle 61 on the side wall of the support rod 7. Then, by rotating the splicing column 64, since the two buckles 61 are sleeved on the side wall of the support rod 7 of the same group, the rotation of the screw 63 can be limited, which is convenient for the stable rotation of the splicing column 64, and then the two screws 63 move into the thread groove 642 of the same group, thereby pulling the buckle 61 to achieve the effect of connecting and fixing the two support rods 7. When the connector 6 is adjusted, the positioning component can be operated to fix the splicing column 64 and the screw 63, which is beneficial to maintaining the stability of the connector 6. When the screw 63 is fixed, the fixing component can be operated to position the buckle 61, which helps to prevent the buckle 61 from sliding on the side wall of the support rod 7.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spinal internal fixation nail connection structure, comprising a fixation nail body (1), characterized in that: A connecting column (2) is fixedly mounted on the top of the fixing nail body (1), and a first screw groove (3) is provided on the top of each of the connecting columns (2). The side wall of the first screw groove (3) is provided with two symmetrically distributed inlets and outlets (4). A support rod (7) is provided in the first screw groove (3). A positioning stud (5) is provided in the first screw groove (3), and a connector (6) is provided between two adjacent support rods (7). The connector (6) comprises a splicing column (64) arranged between two adjacent support rods (7), thread grooves (642) are provided on both sides of the splicing column (64), and screw rods (63) are provided in the two thread grooves (642), the opposite ends of the two screw rods (63) are hinged with connecting rods (62), and the opposite ends of the two connecting rods (62) are fixedly installed with buckles (61), the two buckles (61) are covered on the side walls of the support rods (7) of the same group, the tops of the two buckles (61) are provided with fixing components, and positioning components are provided between the two screw rods (63) and the splicing column (64).

2. A spinal internal fixation nail connection structure according to claim 1, characterized in that: The fixing assembly comprises a first bolt (8) arranged above the two buckling rings (61); the surfaces of the two buckling rings (61) are each provided with a first mounting groove (611); the inner wall of the bottom end of the first mounting groove (611) is each provided with a second screw groove (612) matching the first bolt (8) of the same group; the first bolt (8) is located in the second screw groove (612) of the same group, and the end of the first bolt (8) is in contact with the side wall of the support rod (7) of the same group.

3. A spinal internal fixation nail connection structure according to claim 1, characterized in that: The positioning assembly comprises two second bolts (9) arranged on the side wall of the splicing column (64), the two second bolts (9) are symmetrically distributed on the side wall of the splicing column (64), the side walls at both ends of the splicing column (64) are provided with second installation grooves (641) distributed in a circular array, and the inner wall at the bottom end of the second installation groove (641) is provided with a third screw groove (643) matching the second bolt (9) in the same group, the second bolt (9) is located in one of the third screw grooves (643) on the same side, and the end of the second bolt (9) contacts the side wall of the screw rod (63) in the same group.

4. A spinal internal fixation nail connection structure according to claim 3, characterized in that: The inner walls of the second mounting grooves (641) are fixedly mounted with sealing gaskets distributed in a ring array, and the cross-sections of the sealing gaskets are all triangular.

5. The spinal internal fixation nail connection structure according to claim 1, characterized in that: A collar is fixedly sleeved on the middle part of the splicing column (64), and toggle blocks distributed in a ring array are fixedly mounted on the side wall of the collar.

6. A spinal internal fixation nail connection structure according to claim 1, characterized in that: The side walls of the support rods (7) are provided with a plurality of groups of limiting rings distributed in a linear array, and there are two limiting rings in the same group and both are located on both sides of the connecting columns (2) in the same group.

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