An intraoperatively adjustable fusion cage assembly

Abstract

The application discloses an intraoperative adjustable fusion cage assembly. The tail end of the fusion cage is provided with a connecting groove, and a connecting column is arranged in the connecting groove. The axis of the connecting column is parallel to the height direction of the fusion cage. A coaxial cylindrical segment and a prism segment are arranged on the connecting column, and the diameter of the cylindrical segment is less than or equal to the diameter of the circumscribed circle of the prism segment. A support is arranged on the periphery of the fusion cage and is used as the fulcrum for the rotation adjustment of the fusion cage. The execution end of the prosthesis holder is provided with a clamping ring, and the clamping surface of the clamping ring is matched with the outer surface of the prism segment. When the clamping ring is clamped and connected with the cylindrical segment, the fusion cage is rotated between the vertebral bodies with the support as the fulcrum. When the clamping ring is clamped and connected with the prism segment, the prosthesis holder is used to cooperate with the fusion cage to realize the overall translation of the fusion cage between the vertebral bodies. The fusion cage can be adjusted in a large range and can be adjusted back. The flexible position adjustment is realized through the two kinds of connection modes. After the position of the fusion cage is continuously changed, the clamping and adjustment can still be performed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, and particularly relates to an intraoperative adjustable fusion cage assembly. BACKGROUND

[0002] Transforaminal Lumbar Interbody Fusion (TLIF) is a surgical technique that can effectively restore and maintain intervertebral height and indirectly decompress the compressed nerve root, while playing an irreplaceable role in postoperative reconstruction of the stability of the anterior and middle column of the lumbar spine. During the postoperative rehabilitation of patients, the fusion cage can improve the stability of the fused segment in the directions of flexion, extension, lateral bending, and rotation through the "tension-compression" mechanism, thereby providing a favorable biomechanical environment for postoperative intersegmental fusion. However, relevant clinical studies have shown that postoperative fusion cages have abnormal changes such as migration (8.0%) and subsidence (6.0%), of which 2.4% affect postoperative intervertebral fusion and further form a pseudo joint, ultimately leading to long-term postoperative low back pain and even surgical revision. Meanwhile, biomechanical studies have shown that the biomechanical performance of the fusion cage in different positions of the intervertebral space is significantly different, which also has different effects on the long-term stability of postoperative intervertebral fusion.

[0003] Currently, the intervertebral fusion cage used in TLIF surgery mainly includes Concorde Bullet, O-PAL, etc. When placing the Concorde Bullet, O-PAL, etc. fusion cage, first rotate the tail structure of the prosthetic holder in the forward direction so that the head screw of the prosthetic holder is connected to the threaded circular hole at the tail of the fusion cage. After connection, the two form an approximately rigid structure, and then the fusion cage is directly placed into the intervertebral space from the decompression side. After placement, rotate the tail structure of the prosthetic holder in the reverse direction to separate the fusion cage from the prosthetic holder. If it is found during the operation that the fusion cage is placed too shallowly, the prosthetic holder can be placed into the intervertebral space again and contacted with the surface of the tail of the fusion cage (only contacted and not connected, non-rigid connection), and then the prosthetic holder is gently tapped with a fork-shaped hammer until the fusion cage reaches the appropriate depth. After placing the fusion cage in this way, the tail is often inclined to the decompression side and placed in an oblique position, which limits the operation space on the decompression side when further adjusting the position of the fusion cage, and it is also difficult to adjust the fusion cage back when over-adjusted. The position adjustment is mainly translational but difficult to achieve rotational change. After the position changes, the tail structure deviates from the original placement direction, which makes it difficult to reconnect the fusion cage and the prosthetic holder when the fusion cage needs to be adjusted again. Therefore, the problem of how to adjust the position of the fusion cage according to the preoperative plan or need to be repositioned to change the position of the fusion cage has not been solved. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an intraoperative adjustable fusion cage assembly to solve the technical problems of small fusion cage position adjustment range, inflexibility and adjustment limitation.

[0005] To solve the above problems, the technical scheme of the present application is as follows:

[0006] An intraoperative adjustable fusion cage assembly comprises a fusion cage and a prosthesis holder.

[0007] The tail end of the fusion cage is provided with a connecting groove, and a connecting column is arranged in the connecting groove, the axis of the connecting column is parallel to the height direction of the fusion cage, a coaxial cylindrical segment and a prismatic segment are arranged on the connecting column, and the diameter of the cylindrical segment is less than or equal to the diameter of the circumscribed circle of the prismatic segment; a support is arranged on the side of the fusion cage, which is used as the fulcrum for rotation adjustment of the fusion cage.

[0008] The execution end of the prosthesis holder is provided with a clamping ring, and the clamping surface of the clamping ring matches the outer surface of the prismatic segment.

[0009] When the clamping ring is clamped and connected with the cylindrical segment, the prosthesis holder is used to cooperate with the fusion cage to realize the rotation of the fusion cage between the vertebral bodies with the support as the fulcrum.

[0010] When the clamping ring is clamped and connected with the prismatic segment, the prosthesis holder is used to cooperate with the fusion cage to realize the overall translation of the fusion cage between the vertebral bodies.

[0011] The head end of the fusion cage is provided with an insertion part, and the diameter of the insertion part gradually increases in the direction close to the connecting groove.

[0012] The two sides of the fusion cage in the height direction are both provided with sawtooth segments, and the sawteeth of the sawtooth segments are arranged towards the tail end of the fusion cage.

[0013] The sawtooth segment comprises a plurality of sawteeth connected in sequence, and the sawtooth with the highest tooth height is the support.

[0014] The fusion cage is provided with an elliptical through groove penetrating the fusion cage in the height direction, which is used as a bone grafting space to enable fusion between the vertebral bodies.

[0015] Further preferably, metal balls are embedded on the outer surface of the insertion part and the side of the cylindrical segment, which are used for image perspective development to assist in positioning the fusion cage.

[0016] Specifically, the prosthesis holder comprises a shell, a clamping ring, a sliding part, a limiting part and an elastic part.

[0017] The clamping ring comprises an upper jaw, a lower jaw and a transmission rod, the lower jaw is fixed to the head end of the shell; the transmission rod is arranged in the shell through a hinge; the upper jaw is connected to the execution end of the transmission rod, and is used to form a clamping surface with the lower jaw.

[0018] The sliding part is arranged at the input end of the transmission rod and used to drive the transmission rod;

[0019] The limiting part is arranged on the shell and corresponds to the sliding part, and is used to limit the sliding part;

[0020] The elastic member is arranged in the shell, and two ends of the elastic member are connected with the shell and the transmission rod respectively, and is used to provide elastic force for the transmission rod to be converted into the clamping force of the clamping ring.

[0021] The sliding part comprises a clamping groove, a sliding channel and a sliding member;

[0022] The sliding channel is arranged on the side wall of the shell along the swinging direction of the input end of the transmission member, the clamping groove is arranged corresponding to the sliding channel, and the transmission rod is located between the sliding channel and the clamping groove;

[0023] The sliding member is arranged through the transmission rod, one end of the sliding member is arranged in the clamping groove, and the other end of the sliding member is arranged in the sliding channel, and the sliding member is synchronously slid in the clamping groove and the sliding channel respectively and drives the transmission rod to rotate.

[0024] The limiting part comprises a limiting groove and a limiting member;

[0025] The limiting groove is arranged on the side wall of the shell and communicates with the sliding channel; the limiting member is arranged in the limiting groove and is used to slide into the sliding channel to fix the sliding member to keep the clamping ring in the clamping state.

[0026] The elastic member comprises a first iron bar and a second iron bar;

[0027] One end of the first iron bar is fixedly connected with the bottom plate of the shell, the other end of the first iron bar is nestedly connected with one end of the second iron bar, and the other end of the second iron bar is attached to the transmission rod, and is used to provide elastic force for the transmission rod to be converted into the clamping force of the clamping ring.

[0028] Further preferably, the iron block arranged on the shell is further arranged, and the iron block is used to knock to adjust the position of the fusion cage.

[0029] Specifically, the prism segment is a twelve-prism.

[0030] Compared with the prior art, the above technical scheme has the following advantages and positive effects:

[0031] 1), The connecting column arranged at the tail of the fusion cage is changed into a composite structure of a cylindrical segment and a prism segment (specifically a dodecahedron) in the application, and the prosthesis holder can be clamped and connected with the connecting column through the dodecahedron jaw (i.e. the clamping ring) at the end of the prosthesis holder. The connecting mode allows the prosthesis holder to rotate at least 180° around the tail of the fusion cage, so that the direction of the prosthesis holder does not have to be greatly changed when the position of the fusion cage is adjusted during the operation, and the final large-range adjustment can be realized by accumulating the rotation angle of the prosthesis holder each time. When the position of the fusion cage is excessively adjusted, it can also be adjusted back, so that the position adjustment is controllable.

[0032] 2), The position adjustment in different connection modes can be realized by the transformation of the prosthesis holder between the cylindrical segment and the dodecahedron in the application. When the jaw of the prosthesis holder is connected with the cylindrical segment, the rotation of the fusion cage can be realized by hitting the prosthesis holder; and when the jaw of the prosthesis holder is connected with the prism segment, the whole translation of the fusion cage can be realized by hitting the prosthesis holder. The two connection modes can realize flexible position adjustment.

[0033] 3), The clamping connection between the fusion cage and the prosthesis holder allows the close connection between the two to be realized again after the position of the fusion cage is constantly changed, which breaks through the defect that the existing device cannot be connected again. BRIEF DESCRIPTION OF DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments and are not meant to limit the present application.

[0035] Figure 1 A three-view of a fusion cage provided by the application;

[0036] Figure 2 A structure diagram of a prosthesis holder provided by the application;

[0037] Figure 3 A structure diagram of a transmission rod provided by the application;

[0038] Figure 4 A structure diagram of a sliding part provided by the application;

[0039] Figure 5 A structure diagram of a limiting part provided by the application;

[0040] Figure 6 A three-view of a limiting part provided by the application;

[0041] Figure 7 A structure diagram of a spring provided by the application;

[0042] Figure 8 A flowchart of using a intraoperative adjustable fusion cage assembly provided by the present application is shown.

[0043] Explanation of reference signs

[0044] 1: connecting column; 101: cylindrical segment; 102: prismatic segment; 2: support; 3: insertion part; 4: sawtooth segment; 5: oval through slot; 6: metal ball; 7: housing; 8: clamping ring; 801: upper jaw; 802: lower jaw; 803: transmission rod; 8031: arc-shaped part; 8032: straight rod part; 8033: first through hole; 8034: second through hole; 9: sliding part; 901: clamping groove; 902: slide; 903: sliding part; 10: limiting part; 1001: limiting groove; 1002: limiting part; 11: elastic part; 1101: first iron bar; 1102: second iron bar; 12: iron block. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative effort, and other embodiments can also be obtained.

[0046] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, and they do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one" situation.

[0047] The intraoperative adjustable fusion cage assembly provided by the present application will be described in further detail below in combination with the drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description and claims.

[0048] EMBODIMENT

[0049] Reference Figure 1 and Figure 2 The present embodiment provides an intraoperative adjustable fusion cage assembly, which comprises a fusion cage and a prosthesis holder. For the convenience of understanding, the present embodiment is described as follows. Figure 1The middle main view is the reference, and is divided into upper, lower, left and right four directions. The right end (tail end) of the fusion cage is a smooth surface, and a connecting groove is provided therein, and a connecting column 1 is arranged in the connecting groove. The axis of the connecting column 1 is parallel to the height direction of the fusion cage. In this embodiment, the upper end surface is connected with the top surface of the connecting groove, and the lower end surface is connected with the bottom surface of the connecting groove. Of course, there is also a certain gap. Preferably, the connecting column 1 is arranged at the middle position of the connecting groove. The connecting column 1 comprises a coaxially arranged cylindrical segment 101 and a prism segment 102, and the diameter of the cylindrical segment 101 is less than or equal to the diameter of the circumscribed circle of the prism segment 102. In this embodiment, the cylindrical segment 101 is located at the upper side, and the prism segment 102 is located at the lower side. Of course, it is not limited to this. The connecting column 1 serves to connect with the prosthesis holder. When the prosthesis holder is connected with the cylindrical segment 101, the prosthesis holder can cooperate with the fusion cage to realize the rotation of the fusion cage between the vertebral bodies with the support 2 as the fulcrum. When the prosthesis holder is clamped and connected with the prism segment 102, the prosthesis holder can cooperate with the fusion cage to realize the overall translation of the fusion cage between the vertebral bodies. The prism segment 102 specifically adopts a dodecahedron structure, which is conducive to the connection of the prosthesis holder after the angle (30°) is finely adjusted, thereby avoiding the need to adjust the angle too much to be connected therewith (if designed as a cube (90°) or an octagonal prism (45°), etc., the angle needs to be adjusted too much to be connected therewith, and the process may be limited by the operation space or the operation in a large range may damage the nerve function).

[0050] The left end (head end) of the fusion cage is provided with an insertion part 3, which is designed in the shape of a bullet head. The cross-sectional diameter gradually increases from left to right, which can reduce the resistance encountered during placement.

[0051] Preferably, the sawtooth segments 4 are symmetrically arranged on the upper and lower sides of the fusion cage. The sawteeth in the sawtooth segments 4 are designed towards the right side. Each sawtooth comprises a rising edge and a falling edge from the perspective of the main view. The linear distance of the rising edge from the fusion cage gradually increases, and the linear distance of the falling edge from the fusion cage gradually decreases. The length of the rising edge is greater than the length of the falling edge. Since each sawtooth is designed towards the right side, the resistance encountered during the placement of the fusion cage is further reduced. In addition, specifically, the rising edge and the falling edge of the same sawtooth form a peak, and the falling edge and the rising edge of the adjacent sawtooth form a valley, as shown in Figure 1 In this embodiment, eight sawteeth are designed, and there are eight peaks and six valleys. The peak of the sawtooth located in the middle is higher than the peaks of the sawteeth on both sides, i.e., the tooth height is higher. This design is conducive to the close contact of the fusion cage with the upper and lower endplates of the vertebral body. The sawtooth with the highest tooth height can be used as the support 2 of this embodiment, which can cooperate with the prosthesis holder to realize the rotary change during the fusion cage position adjustment.

[0052] Referring to Figure 1In this embodiment, an elliptical through-slot 5 extending from top to bottom through the center of the fusion device is provided. Its hollow internal structure serves as a space for bone grafting, which is beneficial for postoperative fusion between vertebral bodies. Preferably, a metal ball 6 is embedded on the outer surface of the insertion part 3 and around the cylindrical section 101. The metal ball 6 is embedded inside the fusion device but exposed on the outside, and can be seen from the outside. During use, fluoroscopic imaging is used to assist in the positioning of the fusion device.

[0053] See Figures 2 to 8 The prosthesis holder is a rod-shaped structure. Similarly, for ease of differentiation and description, [the following is a more detailed description of the prosthesis holder]. Figure 2 The prosthesis holder is positioned in four directions: up, down, left, and right. The main body of the prosthesis holder is a housing 7, with a clamping ring 8 located at the left end. The clamping ring 8 includes an upper jaw 801, a lower jaw 802, and a transmission rod 803. The lower jaw 802 is fixed to the end (head) of the housing 7 and remains stationary during use. The upper jaw 801 is located at the actuating end (left side) of the transmission rod 803. The upper jaw 801 and the lower jaw 802 cooperate to form a clamping space to clamp the connecting post 1, as shown below. Figure 2 As shown, the clamping space is dodecagonal, which can be clamped and connected to either the cylindrical segment 101 or the prism segment 102. The upper jaw 801 is controlled by the transmission rod 803 to open or close the clamping space.

[0054] See Figure 3 The transmission rod 803 is located inside the housing 7. The transmission rod 803 includes an arc-shaped member 8031 ​​and a straight member 8032 connected together. One end of the arc-shaped member 8031 ​​is connected to the upper jaw 801, and the other end of the arc-shaped member 8031 ​​is connected to one end of the straight member 8032. The other end of the straight member 8032 is the input end. The center of the arc-shaped member 8031 ​​is located above it. A first through hole 8033 is formed in the middle of the arc-shaped member 8031, through which a hinge passes. Both ends of the hinge are connected to the interior of the prosthetic gripper. The transmission rod 803 is rotatably mounted inside the housing 7 via the hinge. A second through hole 8034 is formed at the input end of the straight member 8032, and a sliding part 9 is correspondingly provided at the second through hole 8034. The transmission rod 803 is controlled by controlling the sliding part 9.

[0055] See Figure 2 and Figure 4, the sliding part 9 is arranged at the second through hole 8034 (input end) to drive the transmission rod 803. Specifically, the sliding part 9 comprises a clamping groove 901, a sliding groove 902 and a sliding piece 903. In the embodiment, the sliding groove 902 is arranged on the side wall of the shell 7 from top to bottom, and the sliding groove 902 is just opposite to the second through hole 8034. The clamping groove 901 is arranged on the other side of the shell 7 corresponding to the sliding groove 902, so that the transmission rod 803 is located between the sliding groove 902 and the clamping groove 901. The sliding piece 903 is arranged in the second through hole 8034 of the transmission rod 803, and the two ends of the sliding piece 903 are provided with limiting blocks to prevent the sliding piece 903 from falling off. The limiting block at one end of the sliding piece 903 is located in the clamping groove 901 and can only move up and down in the clamping groove 901. The limiting block at the other end extends out of the sliding groove 902, so that the crossbar of the sliding piece 903 can slide in the sliding groove 902. Finally, the sliding piece 903 synchronously slides in the clamping groove 901 and the sliding groove 902 respectively and drives the transmission rod 803 to rotate around the first through hole 8033, so as to reduce the influence on the operation in the procedure.

[0056] Referring to Figure 2 , Figure 5 and Figure 6 , the limiting part 10 is arranged on the shell 7 at the sliding part 9, for limiting and fixing the sliding part 9 so that the clamping ring 8 remains in the clamping state. Specifically, the limiting part 10 comprises a limiting groove 1001 and a limiting piece 1002; the limiting groove 1001 is arranged on the side wall of the prosthesis holder from left to right and one end of the limiting groove 1001 is communicated with the sliding groove 902, and the limiting piece 1002 can slide in the limiting groove 1001 and between the sliding groove 902. When the limiting piece 1002 slides into the sliding groove 902 and abuts against the sliding piece 903, the sliding piece 903 is fixed, so as to clamp the clamping ring 8 to prevent the clamping of the jaw from loosening.

[0057] Referring to Figure 2 and Figure 8 , the elastic piece 11 is arranged inside the prosthesis holder and below the transmission rod 803, specifically on the other side of the center of the arc-shaped piece 8031. The elastic piece 11 comprises a first iron bar 1101 and a second iron bar 1102; one end of the first iron bar 1101 is fixedly connected with the bottom plate of the shell 7, the other end of the first iron bar 1101 is nestedly connected with one end of the second iron bar 1102, and the other end of the second iron bar 1102 is attached to the transmission rod 803, for providing elastic force to the transmission rod 803 to be converted into clamping force of the clamping ring 8.

[0058] Referring to Figure 7 , the iron block 12 is further arranged on the prosthesis holder, and the thickened iron blocks 12 on the upper right side and the rear of the prosthesis holder can withstand hammering by an iron hammer, so as to adjust the position of the fusion cage.

[0059] Referring to Figure 8, present the use process of the embodiment, first press the slide 903 of the prosthesis holder downward to open the upper jaw 801, then clamp the prism section 102, after clamping, move the limiting member 1002 to the lower side of the slide 903 to prevent the upper jaw 801 from loosening. Note that the first clamping position should keep the fusion head-tail direction consistent with the prosthesis holder direction.

[0060] Then, place the fusion cage into the intervertebral space and remove the prosthesis holder. If adjustment of the fusion cage position is needed after C-arm perspective, place the prosthesis holder into the intervertebral space again to clamp the connecting groove of the fusion cage, and select the clamping of the cylindrical section or the twelve-prism section according to the specific position.

[0061] Adjust the fusion cage position by hammering the two thickened iron blocks 12 at the rear of the prosthesis holder during the operation. At the same time, the prosthesis holder jaw can be switched back and forth between the cylindrical section 101 and the prism section 102, so as to realize different combinations of position adjustment modes.

[0062] Finally, remove the prosthesis holder after adjustment, and perform C-arm perspective again to check whether the fusion cage position meets the preoperative planning.

[0063] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments. Even if various changes are made to the present application, as long as the changes fall within the scope of the claims of the present application and equivalent technologies, they still fall within the protection scope of the present application.

Claims

1. An intraoperatively adjustable cage assembly, comprising: The application relates to a fusion cage and a prosthesis holder. The tail end of the fusion cage is provided with a connecting groove, a connecting column is arranged in the connecting groove, the axis of the connecting column is parallel to the height direction of the fusion cage, a coaxial cylinder segment and a prism segment are arranged on the connecting column, the diameter of the cylinder segment is less than or equal to the diameter of the circumscribed circle of the prism segment, and a support is arranged on the side of the fusion cage and used as the fulcrum for rotating and adjusting the fusion cage. The execution end of the prosthesis holder is provided with a clamping ring, the clamping surface of the clamping ring matches the outer surface of the prism segment. The clamping ring is clamped and connected with the cylinder segment, and the prosthesis holder is used for cooperating with the fusion cage to realize the rotation of the fusion cage between vertebral bodies with the support as the fulcrum. The clamping ring is clamped and connected with the prism segment, and the prosthesis holder is used for cooperating with the fusion cage to realize the overall translation of the fusion cage between vertebral bodies. The prosthesis holder comprises a shell, the clamping ring, a sliding part, a limiting part and an elastic part. The clamping ring comprises an upper jaw, a lower jaw and a transmission rod, the lower jaw is fixed to the head end of the shell, the transmission rod is arranged in the shell through hinge rotation, the upper jaw is connected to the execution end of the transmission rod and is used for cooperating with the lower jaw to form the clamping surface. The sliding part is arranged on the input end of the transmission rod and is used for driving the transmission rod. The limiting part is arranged on the shell and corresponds to the sliding part and is used for limiting the sliding part. The elastic part is arranged in the shell, the two ends of the elastic part are connected with the shell and the transmission rod respectively, and the elastic part is used for providing elastic force for the transmission rod to be converted into the clamping force of the clamping ring. The sliding part comprises a clamping groove, a sliding channel and a sliding part. The sliding channel is arranged on the side wall of the shell along the swinging direction of the input end, the clamping groove is arranged correspondingly to the sliding channel, and the transmission rod is located between the sliding channel and the clamping groove. The sliding part is arranged on the transmission rod, one end of the sliding part is arranged in the clamping groove, the other end of the sliding part is arranged in the sliding channel, and the sliding part is synchronously slid in the clamping groove and the sliding channel respectively and drives the transmission rod to rotate. The head end of the fusion cage is provided with an insertion part, and the diameter of the insertion part gradually increases in the direction close to the connecting groove.

2. The intra-operatively adjustable cage assembly of claim 1, wherein, Both sides of the fusion cage in the height direction are provided with sawtooth segments, and the sawteeth of the sawtooth segments are arranged towards the tail end of the fusion cage.

3. The intra-operatively adjustable cage assembly of claim 1, wherein, The sawtooth segment comprises a plurality of sawteeth connected in sequence, and the sawtooth with the highest tooth height is the support.

4. The intra-operatively adjustable cage assembly of claim 3, wherein, The fusion cage is provided with an oval-shaped through groove penetrating the fusion cage along the height direction, and the through groove is used as a bone grafting space to make the fusion between vertebral bodies.

5. The intra-operatively adjustable cage assembly of claim 1, wherein, Metal balls are embedded on the outer surface of the insertion part and the side of the cylinder segment, and are used for image perspective development to assist the positioning of the fusion cage.

6. The intra-operatively adjustable cage assembly of claim 2, wherein, The limiting part comprises a limiting groove and a limiting part.

7. The intra-operatively adjustable cage assembly of claim 1, wherein, The limiting groove is arranged on the side wall of the shell and communicates with the sliding channel, the limiting part is arranged in the limiting groove and is used for sliding into the sliding channel to fix the sliding part and keep the clamping ring in the clamping state. ​ 8. The intra-operatively adjustable cage assembly of claim 1, wherein, The elastic member comprises a first iron bar and a second iron bar; One end of the first iron bar is fixedly connected with the bottom plate of the shell, the other end of the first iron bar is nestedly connected with one end of the second iron bar, and the other end of the second iron bar is attached to the transmission rod, so as to provide elastic force for the transmission rod to be converted into clamping force of the clamping ring.

9. The intra-operatively adjustable cage assembly of claim 1, wherein, Further comprising an iron block arranged in the shell, and knocking the iron block to adjust the position of the fusion cage.

10. The intra-operatively adjustable cage assembly of claim 1, wherein, The prism segment is a dodecahedron.

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