An angle-selectable bone filler device for titanium cages

Abstract

The application discloses a selectable-angle bone filling device for a titanium cage, which comprises a box body, a plurality of groove groups are arranged on the upper surface of the box body, the groove groups comprise a plurality of accommodating grooves which are open upward, the accommodating grooves are matched with the titanium cage, and the bottom surfaces of the accommodating grooves are arranged in an inclined mode; the inclination angles of the bottom surfaces of the accommodating grooves in the same groove group increase gradually; the diameters of the accommodating grooves in one groove group are greater than those of the accommodating grooves in another groove group, so that the different groove groups can be matched with the diameters of cervical vertebrae, upper thoracic vertebrae titanium cages, lower thoracic vertebrae or lumbar vertebrae titanium cages; the inclination angles of the bottom surfaces of the accommodating grooves increase gradually, so that the accommodating grooves can be matched with the titanium cages in the range of 0-10 degrees; the inclined surface design of the accommodating grooves can assist in calibrating the inclination angle of the titanium cage; and the titanium cage is attached to one side surface of the accommodating groove, thereby assisting in bone grafting of the titanium cage.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a selective angle bone filling device for titanium cages. Background Technology

[0002] Vertebral body destruction or multi-segmental disc herniation caused by trauma, infection, tumors, and degenerative diseases is a common clinical condition in spinal surgery. The main surgical approach for these conditions involves subtotal resection of the affected vertebral body, multi-segmental disc, and its constituent vertebrae, followed by reconstruction of the vertebral body and disc using a titanium cage (also known as a titanium mesh fusion device). During this procedure, the surgeon must trim the cylindrical titanium cage to the appropriate length and angle according to the patient's vertebral anatomy to achieve effective support between the vertebrae and restore their structural morphology. Furthermore, the bone implanted within the titanium cage, combined with its mesh structure, allows for good bony integration with the surrounding vertebrae, further restoring spinal stability.

[0003] However, the following problems exist in the current use of titanium cages: ① The upper and lower bone surfaces of the patient's vertebral body are not flat, but dome-shaped with a certain tilt angle. Usually, we can accurately calculate its angle through the analysis of preoperative imaging data. However, when cutting the cross-section of the titanium cage during surgery, the angle is difficult to accurately judge by the surgeon's naked eye. Therefore, there is a high probability of mismatch after the titanium cage is implanted; ② Because the two ends of the titanium cage have a certain angle, when bone grafting is performed on the titanium cage outside the body, the titanium cage is prone to slipping and the bone fragments inside are also prone to falling out when using tools to insert bone fragments into the titanium cage. It is impossible to complete effective bone filling simply and conveniently. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] This invention provides a selective angle bone filling device for titanium cages, comprising a box body, with multiple groove groups on the upper surface of the box body, each groove group including multiple upward-opening receiving grooves adapted to the titanium cage, the bottom surface of the receiving grooves being inclined; within the same groove group, the inclination angle of the bottom surfaces of the multiple receiving grooves increases progressively; between two different groove groups, the diameter of the receiving groove in one groove group is larger than the diameter of the receiving groove in the other groove group.

[0006] According to an embodiment of the present invention, a selective angle bone filling device for titanium cages has at least the following beneficial effects: The upper surface of the box body is provided with multiple groove groups, each groove group including multiple receiving grooves adaptable to the titanium cage. The diameters of the receiving grooves in different groups are different, allowing different groove groups to be adapted to the diameters of titanium cages for the cervical spine, upper thoracic spine, lower thoracic spine, or lumbar spine. The surgeon can select different groove groups according to the specifications of the titanium cage, thereby improving the applicability of the selective angle bone filling device for titanium cages of different specifications. After the surgeon cuts the cylindrical titanium cage, the surgeon can insert the titanium cage into the receiving groove with a selected angle, ensuring that the cut angled surface of the titanium cage fits against the bottom surface of the receiving groove, and then observe... By observing whether the mesh openings of the same segment of the titanium cage are flush, the surgeon can help determine whether the inclination of the cut titanium cage meets the expectations. If it does not meet the expectations, the surgeon can continue to cut the titanium cage until it is inserted into the receiving groove with the selected inclination. At this point, the mesh openings of the same segment of the titanium cage are flush, meaning that the inclination of the titanium cage's slope meets the expectations. This can improve the fit of the titanium cage after it is implanted into the human body. The inclination angles of the bottom surfaces of multiple receiving grooves increase progressively, allowing multiple receiving grooves to adapt to titanium cages with inclination angles within a wide range. When the titanium cage is inserted into the receiving groove, it can fit against at least one side of the receiving groove, thereby helping to fix the titanium cage. This facilitates the surgeon's filling of the titanium cage with bone fragments, ensuring that the titanium cage does not slide randomly during the bone fragment insertion process and that the bone fragments do not fall out.

[0007] According to some embodiments of the present invention, the receiving groove includes a first end and a second end, both of which are cylindrical extending vertically, and the receiving groove gradually expands from the first end toward the second end.

[0008] Specifically, both the first and second ends are cylindrical, extending vertically, meaning they can be adapted to the shape of the titanium cage. The receiving groove gradually widens from the first end to the second end, with the diameter of the first end being smaller than that of the second end. This allows one receiving groove to accommodate more than two titanium cages. In use, the surgeon inserts the titanium cage that fits the first end into the receiving groove, ensuring that the cage with the first end's diameter fits against the side of the receiving groove at the first end. This aids in positioning and fixing the titanium cage, facilitating tilting of the cage. For verification and bone grafting, the surgeon can insert the titanium cage that fits the second end into the receiving groove, so that the titanium cage that fits the diameter of the second end fits against the side of the receiving groove at the second end, thereby assisting in the positioning and fixation of the titanium cage, so as to facilitate the verification of the tilt angle of the titanium cage and bone grafting. The optional angle bone filling device for the titanium cage can be used for multiple sizes of titanium cages through one receiving groove, which can reduce the number of receiving grooves, thereby reducing the volume of the box and reducing the space occupied and manufacturing cost of the optional angle bone filling device for the titanium cage.

[0009] According to some embodiments of the present invention, the receiving groove further includes a third end, which is cylindrical and extends vertically. The third end is disposed between the first end and the second end, and the first end, the third end and the second end of the receiving groove smoothly transition and gradually expand.

[0010] The receiving groove also includes a third end, which is located between the first end and the second end. That is, the receiving groove can also be adapted to the corresponding titanium cage. The first end, the third end and the second end of the receiving groove are smoothly transitioned and gradually expand. During use, the surgeon can insert the titanium cage adapted to the third end into the receiving groove and move the titanium cage adapted to the third end so that the titanium cage moves to a position that abuts against the side of the receiving groove. This can help to position and fix the titanium cage, so as to facilitate the verification of the tilt angle of the titanium cage and bone grafting. This can reduce the number of receiving grooves, thereby reducing the volume of the box and reducing the space occupied and manufacturing cost of the optional angle bone filling device for the titanium cage.

[0011] According to some embodiments of the present invention, the groove group includes a first groove group; in the first groove group, the diameter of the receiving groove is 16mm, and the diameters of the first end, the third end and the second end of the receiving groove are 10mm, 12mm and 14mm respectively.

[0012] The first groove group can be adapted to cervical or upper thoracic titanium cages with smaller diameters. Specifically, the diameters of the first, third, and second ends of the receiving groove are 10mm, 12mm, and 14mm, respectively. The surgeon can insert a 10mm titanium cage into the first end of the receiving groove to assist in positioning and fixing the 10mm titanium cage. The surgeon can insert a 12mm titanium cage into the third end of the receiving groove to assist in positioning and fixing the 12mm titanium cage. The surgeon can insert a 14mm titanium cage into the second end of the receiving groove to assist in positioning and fixing the 14mm titanium cage. Since the receiving groove gradually expands from the first, third, and second ends, the first groove group can be adapted to titanium cages with diameters of 10-14mm. When the titanium cage is inserted into the receiving groove, at least one side of the receiving groove is left with a gap between the titanium cage and the receiving groove to facilitate the removal of the titanium cage clamp from the receiving groove after bone grafting.

[0013] According to some embodiments of the present invention, the groove group further includes a second groove group; in the second groove group, the diameter of the receiving groove is 25 mm, and the diameters of the first end, the third end and the second end of the receiving groove are 16 mm, 19 mm and 22 mm, respectively.

[0014] The second groove group can be adapted to titanium cages with larger diameters in the lower thoracic or lumbar spine. Specifically, the diameters of the first, third, and second ends of the receiving groove are 16mm, 19mm, and 22mm, respectively. The surgeon can insert a 16mm titanium cage into the first end of the receiving groove to assist in the positioning and fixation of the 16mm titanium cage. The surgeon can insert a 19mm titanium cage into the third end of the receiving groove to assist in the positioning and fixation of the 19mm titanium cage. The surgeon can insert a 22mm titanium cage into the second end of the receiving groove to assist in the positioning and fixation of the 22mm titanium cage. Since the receiving groove gradually expands from the first, third, and second ends, the first groove group can be adapted to titanium cages with diameters of 16-22mm. When the titanium cage is inserted into the receiving groove, at least one side of the receiving groove is left with a gap between the titanium cage and the receiving groove to facilitate the removal of the titanium cage clamp from the receiving groove after bone grafting.

[0015] According to some embodiments of the present invention, multiple receiving grooves are arranged in the same groove group, and the difference in the inclination angle of two adjacent receiving grooves is the same.

[0016] Within the same groove group, multiple receiving grooves are arranged in a row, and the inclination angles of the bottom surfaces of the multiple receiving grooves increase in an equal arithmetic progression. This allows the surgeon to quickly locate the groove group for placing the titanium cage of the corresponding size and the receiving groove with the expected inclination angle, so as to complete the calibration of the titanium cage inclination angle and bone grafting.

[0017] According to some embodiments of the present invention, each groove group includes three receiving grooves, the bottom surfaces of the three receiving grooves having inclination angles of 1 degree, 5 degrees and 9 degrees respectively.

[0018] Considering that the current bony endplate angles are generally divided into six types: 0°, 2°, 4°, 6°, 8°, and 10°, the groove group of the optional angle bone filling device for the titanium cage can include three receiving grooves, and the inclination angles of the bottom surfaces of the three receiving grooves are 1 degree, 5 degrees, and 9 degrees, respectively. The receiving groove with an inclination angle of 1 degree can be adapted to bony endplates with inclination angles of 0° and 2°, the receiving groove with an inclination angle of 5 degrees can be adapted to bony endplates with inclination angles of 4° and 6°, and the receiving groove with an inclination angle of 9 degrees can be adapted to bony endplates with inclination angles of 8° and 10°. The difference between the inclination angle of the receiving groove and the bony endplate angle is within 1°, which is within an acceptable range. One receiving groove can correspond to two different angles of bony endplates, which helps to reduce the number of receiving grooves, thereby reducing the volume of the box and reducing the space occupied and manufacturing cost of the optional angle bone filling device for the titanium cage.

[0019] According to some embodiments of the present invention, each receiving groove is connected to a clamping groove with its opening facing upwards.

[0020] To address the issue of retrieving the titanium cage after bone filling, the optional angle bone filling device for the titanium cage features an upward-facing clamping groove on the side of each receiving groove. After the titanium cage has undergone angle calibration and bone grafting within the receiving groove, the user can pass tweezers or other relevant instruments through the clamping groove to clamp the titanium cage, facilitating separation of the titanium cage from the receiving groove.

[0021] According to some embodiments of the present invention, the clamping groove is connected to the side of the box body, and the clamping groove is arranged in a U-shape.

[0022] The clamping groove is connected to the side of the box, so that the surgeon can insert tweezers and other related instruments from the side of the box, thereby reducing the problem of mutual obstruction between multiple receiving grooves. This makes it easier for the surgeon to clamp the titanium cage. The clamping groove is U-shaped, which meets the clamping and processing requirements.

[0023] According to some embodiments of the present invention, the bottom surface of the box is provided with anti-slip texture.

[0024] To further prevent the box from sliding between the box and the contact surface during the titanium cage bone grafting process, which could lead to difficulties in bone grafting or the loss of bone fragments, the optional angle bone filling device for the titanium cage has anti-slip textures on the bottom surface of the box. The anti-slip textures increase the friction between the box and the contact surface, thereby reducing the risk of relative sliding between the box and the contact surface during the titanium cage bone grafting process.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 A three-dimensional structural diagram of a selective angle bone filling device for a titanium cage provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The image shows a top view of an optional angled bone filling device for a titanium cage;

[0029] Figure 3 for Figure 2 The figure shows an AA cross-sectional view of an optional angle bone filling device for a titanium cage;

[0030] Figure 4 for Figure 1 The image shows a front view of an optional angle bone filling device for a titanium cage;

[0031] Figure 5 This is a diagram illustrating the configuration of a receiving groove for an optional angle bone filling device for a titanium cage, provided in an embodiment of the present invention.

[0032] In the attached diagram: 100, box body; 200, groove group; 210, receiving groove; 211, first end; 212, second end; 213, third end; 300, clamping groove. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They 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, they should not be construed as limiting this invention.

[0035] In the description of this invention, "several" means an indefinite quantity, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features. Furthermore, the use of "and / or" throughout the text indicates three parallel solutions; for example, A and / or B indicates a solution satisfied by A, a solution satisfied by B, or a solution satisfied by both A and B.

[0036] In the description of this invention, if there is a short phrase containing multiple parallel features, the modifier in the phrase defines the closest feature. For example, "B, C, and E connected to D are set on A" means that B is set on A, E is connected to D, and C is not defined. However, modifiers indicating the relationship between features, such as "interval setting" or "circular arrangement," do not fall into this category. Modifiers preceded by the word "all" define all features in the short phrase. For example, "B, C, and D are all set on A" means that B, C, and D are all set on A.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] The following is combined with Figures 1-5 Embodiments of the present invention will be described.

[0039] Example 1, see Figure 1 , Figure 2 and Figure 4 This invention provides an optional angle bone filling device for titanium cages, comprising: a box body 100.

[0040] The box 100 can be rectangular in shape, with rounded corners to increase its smoothness and reduce the risk of unnecessary scratches. The box 100 can be made of materials with good hardness, such as metal or plastic, to increase the shape stability of the box 100 and the groove assembly 200 on it, thereby improving the accuracy of the titanium cage calibration.

[0041] Specifically, the upper surface of the box body 100 is provided with multiple groove groups 200. Each groove group 200 includes multiple upward-facing accommodating grooves 210. The shape of the accommodating grooves 210 is adapted to fit the titanium cage, that is, at least one side of the accommodating groove 210 can abut against the titanium cage, thereby assisting in the positioning and fixing of the titanium cage. The bottom surface of the accommodating grooves 210 is inclined, like an inclined plane. Within the same groove group 200, multiple accommodating grooves 210 are arranged in a row, that is, accommodating grooves 210 belonging to the same group are arranged sequentially, so as to facilitate the surgeon to distinguish between different groups of groove groups 200, and the inclination angle of the multiple accommodating grooves 210 increases progressively.

[0042] Between two different groove groups 200, the diameters of the receiving grooves 210 in different groups are different, so that different groove groups 200 can be adapted to the diameter of titanium cages for cervical vertebrae, upper thoracic vertebrae, lower thoracic vertebrae or lumbar vertebrae, thereby improving the applicability of the optional angle bone filling device for titanium cages to titanium cages of different specifications.

[0043] During the procedure, the surgeon can cut the cylindrical titanium cage based on data from imaging analysis to ensure the angle and shape of the upper and lower ends meet the patient's needs. Then, based on the diameter of the titanium cage, the surgeon can select different groove groups 200 on the housing 100. The surgeon can then insert the titanium cage into the selected angled receiving groove 210, ensuring the cut angled surface of the titanium cage fits against the bottom surface of the receiving groove 210. The surgeon can then observe whether the mesh openings at the same section of the titanium cage are flush. Alternatively, the surgeon can use the upper end of the housing 100 as a reference surface to observe whether the row of mesh openings near the reference surface is flush, thus helping to determine whether the tilt angle of the cut titanium cage meets the expectations.

[0044] If the tilt angle of the titanium cage does not reach the expected level, the surgeon can continue to trim the titanium cage until it is inserted into the selected tilt groove 210. The mesh of the titanium cage is flush, that is, the tilt angle of the titanium cage reaches the expected level, which can improve the matching degree of the titanium cage after implantation into the human body. Since the upper and lower bones of the vertebra are not planar, but dome-shaped with a certain tilt angle, the surgeon often needs to trim the upper and lower ends of the titanium cage so that the tilt angle of the upper and lower ends of the titanium cage matches the tilt angle of the upper and lower bones of the vertebra.

[0045] See Figure 3 The bottom surfaces of the multiple receiving grooves 210 have progressively increasing inclination angles, allowing the multiple receiving grooves 210 to adapt to titanium cages with inclination angles within a wide range. Once the inclination of the upper and lower ends of the titanium cage meets the requirements of the preoperative measurement, the surgeon can insert the titanium cage into the receiving groove 210. The titanium cage can fit against at least one side of the receiving groove 210, thereby assisting in the filling of the titanium cage with bone fragments. This prevents the titanium cage from sliding randomly during the bone fragment insertion process and prevents the bone fragments from falling off. In other words, the setting of the receiving grooves 210 can assist in the bone grafting operation of the titanium cage.

[0046] See 1 and Figure 5 Specifically, the receiving groove 210 includes a first end 211, a third end 213, and a second end 212, and the first end 211, the second end 212, and the third end 213 are all cylindrical, extending vertically, meaning that the shapes of the first end 211, the second end 212, and the third end 213 are all adapted to fit the shape of the titanium cage. The first end 211, the third end 213, and the second end 212 of the receiving groove 210 have a smooth transition and gradually expand, such as the first end 211, the third end 213, and the second end 212 being arranged sequentially from left to right, and the first end 211, the third end 213, and the second end 212 being interconnected.

[0047] The receiving groove 210 has a front tangent and a rear tangent on its front and rear sides, respectively. The front tangent is tangent to the front edge of the first end 211, the third end 213, and the second end 212, and the rear tangent is tangent to the rear edge of the first end 211, the third end 213, and the second end 212. This allows titanium cages of different diameters to slide within the receiving groove 210 and abut against one side of the receiving groove 210, thereby assisting in the positioning and fixing of the titanium cages. That is, the diameters of the first end 211, the third end 213, and the second end 212 gradually increase, so that one receiving groove 210 can accommodate more than three titanium cages.

[0048] In use, the surgeon can insert the titanium cage adapted to the first end 211 into the receiving groove 210, so that the titanium cage adapted to the diameter of the first end 211 fits against the left side of the receiving groove 210 of the first end 211, thereby assisting in the positioning and fixation of the titanium cage, so as to facilitate the check of the tilt angle of the titanium cage and bone grafting. The surgeon can insert the titanium cage adapted to the second end 212 into the receiving groove 210, so that the titanium cage adapted to the diameter of the second end 212 fits against the right side of the receiving groove 210 of the second end 212, thereby assisting in the positioning and fixation of the titanium cage, so as to facilitate the check of the tilt angle of the titanium cage and bone grafting. During use, the surgeon can insert the titanium cage adapted to the third end 213 into the receiving groove 210 and translate the titanium cage adapted to the third end 213, so that the titanium cage moves to the position abutting against the side of the receiving groove 210, thereby assisting in the positioning and fixation of the titanium cage.

[0049] The optional angle filling device for the titanium cage can be used for multiple sizes of titanium cages through a single receiving groove 210, which can reduce the number of receiving grooves 210, thereby reducing the volume of the box 100 and lowering the space occupied and manufacturing cost of the optional angle filling device for the titanium cage.

[0050] See Figure 2 The groove group 200 includes a first groove group and a second groove group. The diameter of the receiving groove 210 of the first groove group is smaller than the diameter of the receiving groove 210 of the second groove group. The first groove group can be adapted to cervical or upper thoracic titanium cages with smaller diameters, while the second groove group can be adapted to lower thoracic or lumbar titanium cages with larger diameters.

[0051] See 1 and Figure 5 Specifically, in the first groove group, the diameter of the receiving groove 210 is 16mm, and the diameters of the first end 211, the third end 213, and the second end 212 of the receiving groove 210 are 10mm, 12mm, and 14mm, respectively. The center of the first end 211, the center of the third end 213, and the center of the second end 212 are all located on the same straight line. The distance between the center of the first end 211 and the center of the third end 213 can be 1mm, and the distance between the center of the third end 213 and the center of the second end 212 can be 1mm. The receiving groove 210 is cut at the front edge of the first end 211, the third end 213, and the second end 212, and the receiving groove 210 is cut at the rear edge of the first end 211, the third end 213, and the second end 212, so that the first end 211, the second end 212, the third end 213, the front cut surface, and the rear cut surface together form the shape of the receiving groove 210, so that the diameter between the left side of the first end 211 and the right side of the second end 212 is 16mm.

[0052] The surgeon can insert a 10mm titanium cage into the first end 211 of the receiving groove 210 to assist in positioning and fixing the 10mm titanium cage. The surgeon can insert a 12mm titanium cage into the third end 213 of the receiving groove 210 to assist in positioning and fixing the 12mm titanium cage. The surgeon can insert a 14mm titanium cage into the second end 212 of the receiving groove 210 to assist in positioning and fixing the 14mm titanium cage. Since the receiving groove 210 gradually expands from the first end 211, the third end 213 and the second end 212, the first groove group can adapt to titanium cages with a diameter of 10-14mm. When the titanium cage is inserted into the receiving groove 210, at least one side of the receiving groove 210 is left with the titanium cage so that the titanium cage can be removed from the receiving groove 210 after bone grafting.

[0053] See 1 and Figure 5 In the second groove group, the diameter of the receiving groove 210 is 25mm, and the diameters of the first end 211, the third end 213 and the second end 212 of the receiving groove 210 are 16mm, 19mm and 22mm respectively. The center of the first end 211, the center of the third end 213, and the center of the second end 212 are all located on the same straight line. The distance between the center of the first end 211 and the center of the third end 213 can be 1.5mm, and the distance between the center of the third end 213 and the center of the second end 212 can also be 1.5mm. The receiving groove 210 is cut at the front edge of the first end 211, the third end 213, and the second end 212, and at the rear edge of the first end 211, the third end 213, and the second end 212, so that the first end 211, the second end 212, the third end 213, the front cut surface, and the rear cut surface together form the shape of the receiving groove 210, so that the diameter between the left end of the first end 211 and the right end of the second end 212 is 25mm.

[0054] The surgeon can insert a 16mm titanium cage into the first end 211 of the receiving groove 210 to assist in positioning and fixing the 16mm titanium cage. The surgeon can insert a 19mm titanium cage into the third end 213 of the receiving groove 210 to assist in positioning and fixing the 19mm titanium cage. The surgeon can insert a 22mm titanium cage into the second end 212 of the receiving groove 210 to assist in positioning and fixing the 22mm titanium cage. Since the receiving groove 210 gradually expands from the first end 211, the third end 213 and the second end 212, the first groove group can adapt to titanium cages with a diameter of 16-22mm. When the titanium cage is inserted into the receiving groove 210, at least one side of the receiving groove 210 is left with the titanium cage so that the titanium cage can be removed from the receiving groove 210 after bone grafting. Overall, the optional angle filling device for titanium cages can be adapted to a full range of titanium cages with diameters of 10-22mm through the setting of two sets of groove groups 200.

[0055] Within the same groove group 200, multiple receiving grooves 210 are arranged in a row, and the difference in the tilt angle of two adjacent receiving grooves 210 is the same. This makes it easy for the surgeon to quickly find the groove group 200 for placing the titanium cage of the corresponding size and the receiving groove 210 with the expected tilt angle, so as to complete the calibration of the tilt angle of the titanium cage and bone grafting.

[0056] Specifically, considering that the current bony endplate angles are generally divided into six types: 0°, 2°, 4°, 6°, 8°, and 10°, see [link to relevant documentation]. Figure 3 Each groove group 200 includes three receiving grooves 210, with the bottom surfaces of the three receiving grooves 210 having inclination angles of 1 degree, 5 degrees, and 9 degrees, respectively. The receiving groove 210 with an inclination angle of 1 degree can be adapted to bony endplates with inclination angles of 0° and 2°, the receiving groove 210 with an inclination angle of 5 degrees can be adapted to bony endplates with inclination angles of 4° and 6°, and the receiving groove 210 with an inclination angle of 9 degrees can be adapted to bony endplates with inclination angles of 8° and 10°. The difference between the inclination angle of the receiving groove 210 and the angle of the bony endplate is within an acceptable range of 1°. One receiving groove 210 can correspond to two different angles of bony endplates, which helps to reduce the number of receiving grooves 210, thereby reducing the volume of the box body 100 and reducing the space occupied and manufacturing cost of the optional angle bone filling device for the titanium cage.

[0057] It should be noted that within the same groove group 200, the increasing inclination angle of the bottom surfaces of multiple receiving grooves 210 does not mean that the inclination angle of the bottom surfaces of all receiving grooves 210 within a groove group 200 must be increasing. It is sufficient that at least some of the receiving grooves 210 have increasing inclination angles. For example, if the groove group 200 has six receiving grooves 210, where two receiving grooves 210 have an inclination angle of 1 degree, two receiving grooves 210 have an inclination angle of 5 degrees, and the other two receiving grooves 210 have an inclination angle of 9 degrees, this also satisfies the requirement that the inclination angles of the bottom surfaces of multiple receiving grooves 210 are in an increasing relationship. The requirement that the inclination angles of the bottom surfaces of all receiving grooves 210 within the same groove group 200 are in an increasing relationship is one implementation method.

[0058] See Figure 1 and Figure 4 To address the issue of clamping the titanium cage after bone filling, the optional angle bone filling device for the titanium cage has an upward-facing clamping groove 300 on the side of each receiving groove 210. After the titanium cage has undergone angle calibration and bone grafting within the receiving groove 210, the user can pass tweezers or other related instruments through the clamping groove 300 to clamp the titanium cage, thus facilitating separation of the titanium cage from the receiving groove 210.

[0059] See Figure 1 The clamping groove 300 is connected to the side of the housing 100, allowing the surgeon to insert forceps and other related instruments from the side of the housing 100, thereby reducing the problem of mutual obstruction between the multiple receiving grooves 210 and facilitating the surgeon's clamping of the titanium cage. The clamping groove 300 is U-shaped, which meets the clamping and processing requirements.

[0060] To further prevent the box body 100 from sliding against the contact surface during the titanium cage bone grafting process, which could lead to difficulties in bone grafting or the loss of bone fragments, the optional angle bone filling device for the titanium cage features anti-slip textures on the bottom surface of the box body 100. These textures increase the friction between the box body 100 and the contact surface, thereby reducing the risk of relative sliding during the titanium cage bone grafting process. For example, the box body 100 can be fitted with silicone pads or rubber pads on the ground to increase the coefficient of friction between the box body 100 and the contact surface, further reducing the risk of relative sliding.

[0061] In other embodiments of the present invention, each groove group 200 includes six receiving grooves 210, the bottom surfaces of which have inclination angles of 0 degrees, 2 degrees, 4 degrees, 6 degrees, 8 degrees, and 10 degrees, respectively. The six receiving grooves 210 can be adapted to six different angles of bony endplates, which helps to improve the accuracy of the inclination angle calibration of the titanium cage.

[0062] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A selective-angle bone-filling device for titanium cages, characterized in that... ,include: The box body (100) has multiple groove groups (200) on its upper surface. Each groove group (200) includes multiple upward-opening receiving grooves (210). The shape of the receiving grooves (210) is adapted to the titanium cage. The bottom surface of the receiving grooves (210) is inclined. In the same groove group (200), multiple receiving grooves (210) are arranged in a row. The inclination angle of the bottom surface of the multiple receiving grooves (210) increases. Between two different groove groups (200), the diameter of the receiving grooves (210) of one groove group (200) is larger than the diameter of the receiving grooves (210) of the other groove group (200), so that the different groove groups (200) are adapted to the diameter of the cervical vertebra titanium cage, upper thoracic vertebra titanium cage, lower thoracic vertebra titanium cage or lumbar vertebra titanium cage. The receiving groove (210) includes a first end (211), a second end (212), and a third end (213). The first end (211), the second end (212), and the third end (213) are all cylindrical extending vertically. The third end (213) is disposed between the first end (211) and the second end (212). The first end (211), the third end (213), and the second end (212) of the receiving groove (210) have a smooth transition and gradually expand. The first end (211), the second end (212), and the third end (213) are interconnected. Each of the receiving grooves (210) is connected to a clamping groove (300) with its opening facing upwards on its side; the clamping groove (300) is connected to the side of the box body (100) and is arranged in a U-shape; when the titanium cage is inserted into the receiving groove (210), at least one side of the receiving groove (210) is left with a gap between it and the titanium cage so that the titanium cage can be clamped out of the receiving groove (210) after the bone grafting is completed.

2. The variable angle fill bone device for a titanium cage of claim 1, wherein The groove group (200) includes a first groove group; in the first groove group, the diameter of the receiving groove (210) is 16mm, and the diameters of the first end (211), the third end (213) and the second end (212) of the receiving groove (210) are 10mm, 12mm and 14mm respectively.

3. The variable angle fill bone device for a titanium cage of claim 2, wherein The groove group (200) further includes a second groove group; in the second groove group, the diameter of the receiving groove (210) is 25mm, and the diameters of the first end (211), the third end (213) and the second end (212) of the receiving groove (210) are 16mm, 19mm and 22mm respectively.

4. The variable angle fill bone device for a titanium cage according to any one of claims 1-3, wherein Within the same groove group (200), the difference in the inclination angle between two adjacent receiving grooves (210) is the same.

5. The variable angle fill bone device for a titanium cage of claim 4, wherein Each groove group (200) includes three receiving grooves (210), and the bottom surfaces of the three receiving grooves (210) have inclination angles of 1 degree, 5 degrees and 9 degrees respectively.

6. The variable angle fill bone device for a titanium cage of claim 1, wherein The bottom surface of the box body (100) is provided with an anti-skid texture.

Images