Interbody fusion cage holder

By designing the knob and stop structure of the connecting rod, connecting sleeve and guide, the problem of difficult to quickly disassemble the intervertebral fusion handler in the prior art, and the rapid disassembly of the intervertebral fusion and guide is realized. Installation simplifies the surgical process and adapts to the implantation needs of different specifications of intervertebral fusion devices.

CN222195209UActive Publication Date: 2024-12-20SHANDONG WEIGAO ORTHOPEDIC DEVICE COMPANY
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Patent Information

Application Number
CN202323453707.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-15
Publication Date
2024-12-20
Estimated Expiration
2033-12-15

AI Technical Summary

Technical Problem

The existing intervertebral fusion handler is difficult to quickly disassemble the guide and intervertebral fusion, resulting in frequent replacement of the guide when implanting different specifications of intervertebral fusions, which increases the complexity and time of surgery.

Method used

A intervertebral fusion handler including a connecting rod and a connecting sleeve is designed, and the matching guide is equipped with a knob and a stop structure to achieve rapid disassembly and installation, and a polygon-shaped stop structure and elastic jacking barrel are used to realize the guide. stable positioning and quick disassembly.

Benefits of technology

It realizes the rapid disassembly and connection between the intervertebral fusion device and the guide, simplifies the surgical process, facilitates replacement of guides of different specifications, and improves surgical efficiency and operation convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an interbody fusion cage holder, which belongs to the technical field of interbody fusion cage holders and comprises a connecting rod, a connecting sleeve and a matched guider. A mounting channel is arranged in the connecting sleeve, and the connecting rod penetrates through the mounting channel. The tail side of the connecting rod is provided with a knob, and the head end of the connecting rod is provided with an external thread extending out of the head end of the connecting sleeve. The head end of the mounting channel is provided with a connecting section, and a gap is formed between the connecting section and the connecting rod. The guider is provided with a connecting cylinder, the connecting cylinder is detachably inserted into the connecting section, and the head end of the connecting rod penetrates through the connecting cylinder. The guider is firstly arranged on the outer side of the head end of the connecting rod in a sleeving mode, the connecting cylinder of the guider is inserted into the connecting section, and then the interbody fusion cage is connected with the head end of the connecting rod in a threaded mode. The guider is located between the interbody fusion cage and the connecting sleeve, and installation is completed. During disassembly, only the interbody fusion cage needs to be taken down, and the guider is pulled out, so that the guider matched with different interbody fusion cages is convenient to replace.
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Description

Technical Field

[0001] The present application belongs to the technical field of intervertebral fusion device holders, and more specifically, relates to an intervertebral fusion device holder. Background Art

[0002] Intervertebral fusion cage is an orthopedic implantable medical device and one of the implants used to achieve fusion of adjacent intervertebral spaces in the spine.

[0003] The intervertebral fusion device is generally connected to the end of the holder by threading and inserted into the intervertebral space. For example, a fusion device holder disclosed in the publication number CN215307063U (publication date: 2021.12.28) is connected by turning the knob to make the fusion device connector with external threads at the end of the connecting rod screw into the internal threads of the intervertebral fusion device to achieve the connection between the two. At the same time, after the intervertebral fusion device is implanted in the human body, it needs to be fixed by screws passing through a specific direction on its fixing plate. In order to ensure the correct direction and position of the screw, it is necessary to guide the screw through a screw channel with a specific direction on the guide. The hole position on the guide coincides with the screw hole position on the intervertebral fusion device. The guide needs to be placed in the human body through the holder at the same time as the intervertebral fusion device. For intervertebral fusion devices of different specifications, the position and direction of the screw guide holes thereon are also different, and guides of different specifications need to be replaced frequently, which requires that both the guide and the intervertebral fusion device can be quickly disconnected from the holder. Therefore, there is a need for an intervertebral fusion cage holder that can be quickly detached from a guide and an intervertebral fusion cage. Summary of the invention

[0004] The utility model provides an intervertebral fusion device holder, which can realize quick disassembly and connection with a guide device and an intervertebral fusion device at the same time, and is convenient for implanting intervertebral fusion devices of different specifications.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an intervertebral fusion device holder, including a connecting rod and a connecting sleeve, wherein the connecting sleeve has an installation channel, and the connecting rod is inserted into the installation channel; a knob is installed at the tail side of the connecting rod, and the head end of the connecting rod is provided with an external thread extending from the head end of the connecting sleeve, and the external thread is used to connect with the intervertebral fusion device;

[0006] A guide is also provided; the head end of the installation channel has a connecting section, and a gap is provided between the connecting section and the connecting rod; the guide is provided with a connecting tube, the connecting tube is detachably inserted in the connecting section, the head end of the connecting rod is passed through the connecting tube, and the end of the connecting rod with an external thread extends out of the connecting tube.

[0007] Optionally, a anti-rotation structure that is detachably connected to each other is provided between the connecting tube and the connecting sleeve; the anti-rotation structure includes a polygonal inner wall located in the connecting section and a polygonal outer wall located in the connecting tube, the shapes of the polygonal outer wall and the polygonal inner wall match, and the polygonal outer wall is inserted into the polygonal inner wall.

[0008] Optionally, a through hole is provided on the side wall of the connecting sleeve located at the connecting section, a limiting ball is placed in the through hole, and a clamping groove aligned with the through hole is provided on the outer side wall of the connecting sleeve;

[0009] It also includes a clamping sleeve sleeved on the outside of the connecting sleeve, the clamping sleeve is elastically and movably connected along the axial direction of the connecting sleeve, and the head end of the clamping sleeve has an avoidance section with an inner diameter larger than the outer diameter of the connecting sleeve;

[0010] In the free state, the inner wall of the clamping sleeve blocks the through hole, and the limiting ball is partially located in the connecting section; the clamping sleeve can align the avoidance section to the through hole by axial movement along the connecting sleeve, and the limiting ball can move away from the connecting section and partially enter the avoidance section.

[0011] Optionally, the diameter of the port of the through hole toward the connecting section is smaller than the diameter of the limiting ball.

[0012] Optionally, the inner side of the tail end of the clamping cylinder has a connecting cavity section, and the bottom wall of the connecting cavity section has a first step; the connecting sleeve has a second step located in the connecting cavity section, and the second step is arranged opposite to the first step; the first elastic member is clamped between the first step and the second step.

[0013] Optionally, the connecting sleeve further comprises a small diameter section, the diameter of the small diameter section is smaller than the inner diameter of the corresponding clamping sleeve, and two ends of the small diameter section comprise third steps opposite to each other;

[0014] A limiting pin is provided on the side wall of the clamping cylinder corresponding to the small diameter section, and the limiting pin is located between the two third steps.

[0015] Optionally, an outer edge is arranged around the outer side wall of the rear end of the clamping tube.

[0016] Optionally, a connecting frame is provided at the tail end of the connecting sleeve, the tail end of the connecting rod passes through the connecting frame, the knob is located in the connecting frame, and a friction pad is installed on the side wall of the knob facing the tail end of the installation channel.

[0017] Optionally, a mounting groove coaxially arranged with the mounting channel is provided on a side of the connecting frame away from the connecting sleeve, the tail end of the connecting rod is inserted into the mounting groove, and a second elastic member is clamped between the tail end of the connecting rod and the bottom wall of the mounting groove.

[0018] Optionally, the guide is provided with a guide tube corresponding to the screw hole on the intervertebral fusion device, and claws are provided on opposite side edges of the guide away from the side wall of the connecting sleeve, and the intervertebral fusion device can be clamped between the two claws.

[0019] The technical solution of this application has the following beneficial effects compared with the prior art:

[0020] When in use, the guide is first sleeved on the outside of the head end of the connecting rod, the connecting tube of the guide is inserted into the connecting section, and then the intervertebral fusion device is set at the head end of the connecting rod, and the external thread is screwed into the intervertebral fusion device by turning the knob. The guide is limited between the intervertebral fusion device and the connecting sleeve to complete the installation. When disassembling, you only need to remove the intervertebral fusion device and pull out the guide. The entire disassembly and assembly process is very simple, and it is convenient to replace the guide that matches different intervertebral fusion devices, so that intervertebral fusion devices of different specifications can be implanted during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a cross-sectional view of the structure of the intervertebral fusion cage holder;

[0023] Figure 2 This is an exploded view of the structure of the intervertebral fusion cage holder;

[0024] Figure 3 for Figure 1 A partial enlarged view of the middle part;

[0025] Figure 4 It is a schematic diagram of the connection between the intervertebral fusion cage holder, the guide and the intervertebral fusion cage;

[0026] Figure 5 It is an exploded view of the connection structure between the intervertebral fusion cage holder, the guide and the intervertebral fusion cage;

[0027] Figure 6 This is a schematic diagram of the guide clamping state;

[0028] Figure 7 This is a schematic diagram of the guide in a non-engaged state;

[0029] Figure 8 for Figure 1 A partial enlarged view of point B in the middle.

[0030] Icons: 100, intervertebral fusion device; 1, connecting rod; 101, knob; 102, external thread; 103, friction pad; 2, connecting sleeve; 201, installation channel; 202, connecting section; 203, polygonal inner wall; 204, through hole; 205, limiting ball; 206, second step; 207, small diameter section; 208, third step; 209, connecting frame; 210, installation groove; 211, second elastic member; 212, handle; 3, guide; 301, connecting tube; 302, polygonal outer wall; 303, clamping groove; 304, guide tube; 305, claw; 4, clamping tube; 401, avoidance section; 402, connecting cavity section; 403, first step; 404, first elastic member; 405, limiting pin; 406, outer edge. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed" or "set" to another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] Example:

[0035] This embodiment provides an intervertebral fusion cage holder based on Figures 1 to 4 As shown, it includes a connecting rod 1 and a connecting sleeve 2, wherein the connecting sleeve 2 has an installation channel 201, and the connecting rod 1 is inserted into the installation channel 201. A knob 101 is installed at the tail side of the connecting rod 1, and the head end of the connecting rod 1 is provided with an external thread 102 extending from the head end of the connecting sleeve 2, and the external thread 102 is used to connect with the intervertebral fusion device 100. The connecting rod 1 is rotated by turning the knob 101, so that the external thread 102 is connected with the corresponding threaded hole on the intervertebral fusion device 100. A handle 212 is provided at the tail side of the connecting sleeve 2 for easy holding.

[0036] Based on the above structure, Figure 3 and Figure 5 As shown, a guide 3 is also provided, and the hole position on the guide 3 is used to coincide with the screw hole position on the intervertebral fusion device 100 to facilitate the insertion and positioning of the screw. The head end of the installation channel 201 has a connecting section 202, and there is a gap between the connecting section 202 and the connecting rod 1. The guide 3 is provided with a connecting tube 301, and the connecting tube 301 is detachably inserted in the connecting section 202. The head end of the connecting rod 1 is inserted into the connecting tube 301, and the end of the connecting rod 1 with an external thread 102 extends out of the connecting tube 301 and is threadedly connected to the intervertebral fusion device 100. In this embodiment, the head end refers to the end close to the intervertebral fusion device 100, and the tail side and the tail end refer to the part away from the intervertebral fusion device 100.

[0037] When in use, the guide 3 is first sleeved on the outside of the head end of the connecting rod 1, and the connecting tube 301 of the guide 3 is inserted into the connecting section 202, and then the intervertebral fusion device 100 is set at the head end of the connecting rod 1, and the external thread 102 is screwed into the intervertebral fusion device 100 by turning the knob 101. The guide 3 is limited between the intervertebral fusion device 100 and the connecting sleeve 2, and the installation is completed. When disassembling, it is only necessary to remove the intervertebral fusion device 100 and pull out the guide 3. The whole disassembly and assembly process is very simple, and it is convenient to replace the guide 3 matching different intervertebral fusion devices 100, so that intervertebral fusion devices 100 of different specifications can be implanted during surgery.

[0038] Furthermore, a detachably connected anti-rotation structure is provided between the connecting cylinder 301 and the connecting sleeve 2 to ensure that the guide 3 will not rotate axially with the connecting sleeve 2 after being connected. Figure 3 and Figure 5 As shown, the anti-rotation structure includes a polygonal inner wall 203 located at the connecting section 202 and a polygonal outer wall 302 located at the connecting tube 301. The polygonal outer wall 302 and the polygonal inner wall 203 have matching shapes, and the polygonal outer wall 302 is inserted into the polygonal inner wall 203. After the two are plugged into each other, relative rotation can no longer occur. The polygonal inner wall 203 and the polygonal outer wall 302 can be quadrilateral, pentagonal or hexagonal, etc.

[0039] Further, based on Figure 1 , Figure 6 and Figure 7 As shown, the side wall of the connecting sleeve 2 located at the connecting section 202 is provided with a through hole 204, a limiting ball 205 is placed in the through hole 204, and the outer wall of the connecting sleeve 301 is provided with a clamping groove 303 aligned with the through hole 204. At the same time, it also includes a clamping sleeve 4 sleeved on the outside of the connecting sleeve 2, the clamping sleeve 4 is elastically connected along the axial direction of the connecting sleeve 2, and the head end of the clamping sleeve 4 has an avoidance section 401 whose inner diameter is larger than the outer diameter of the connecting sleeve 2.

[0040] The arrangement of the clamping tube 4 and the limiting ball 205 is used to realize the quick disassembly of the guide 3 and realize the axial positioning of the guide 3. In the free state, the inner side wall of the clamping tube 4 blocks the through hole 204, and the limiting ball 205 is partially located in the connecting section 202. The free state refers to the default relative position of the clamping tube 4 and the connecting sleeve 2 without the intervention of external forces. At this time, due to the obstruction of the limiting ball 205, the connecting tube 301 of the guide 3 cannot be fully extended into the connecting section 202. When the guide 3 needs to be connected, the clamping tube 4 is manually pulled toward the tail end of the connecting sleeve 2. The clamping tube 4 can align the avoidance section 401 to the through hole 204 by moving axially along the connecting sleeve 2. At this time, the connecting tube 301 is extended into the connecting section 202. Under the abutment of the outer side wall of the connecting tube 301, the limiting ball 205 can be movably separated from the connecting section 202 and partially enter the avoidance section 401. This allows the connecting tube 301 to be fully inserted into the connecting section 202. When the connecting tube 301 is inserted into place, the snap-in groove 303 is aligned with the through hole 204, and the limiting ball 205 is completely separated from the avoidance section 401 and partially falls into the snap-in groove 303. At this time, release the snap-in tube 4, and the snap-in tube 4 returns to the above-mentioned default relative position with the connecting sleeve 2 under the action of elasticity, and the inner side wall of the snap-in tube 4 blocks the through hole 204 again, so that the limiting ball 205 can no longer enter the avoidance section 401. Under the limiting action of the limiting ball 205, the guide 3 can no longer move axially, and the connection is achieved. Similarly, when the guide 3 needs to be disassembled, manually pull the snap-in tube 4 toward the tail end of the connecting sleeve 2, and the avoidance section 401 is aligned with the through hole 204. At this time, the guide 3 is pulled, and the limiting ball 205 is separated from the connecting section 202 and partially enters the avoiding section 401 under the abutment of the outer wall of the connecting tube 301, and the entire guide 3 can be pulled out and disassembled. In the above process, the installation and disassembly of the guide 3 can be achieved by only pulling the clamping tube 4 and plugging and unplugging the guide 3, which is easy to operate, and the guide 3 is stably connected and not easy to fall off.

[0041] Preferably, the diameter of the end of the through hole 204 toward the connecting section 202 is smaller than the diameter of the limiting ball 205 to ensure that the entire limiting ball 205 will not pass through the end of the through hole 204 toward the connecting section 202 and fall into the connecting section 202 .

[0042] Further, based on Figure 8 As shown, the inner side of the rear end of the clamping sleeve 4 has a connecting cavity section 402, and the bottom wall of the connecting cavity section 402 has a first step 403. The connecting sleeve 2 has a second step 206 located in the connecting cavity section 402, and the second step 206 is arranged opposite to the first step 403. A first elastic member 404 is sandwiched between the first step 403 and the second step 206. The first elastic member 404 is preferably a spring, and can also be a spring sheet or an elastic column. Figures 6 to 8As shown, when the clamping sleeve 4 is pulled toward the rear end of the connecting sleeve 2, the first step 403 and the second step 206 approach each other, the first elastic member 404 is compressed, and the through hole 204 is aligned with the avoidance section 401. When the clamping sleeve 4 is released, under the elastic force of the first elastic member 404, the clamping sleeve 4 moves in the opposite direction to reset, and the avoidance section 401 and the through hole 204 are staggered.

[0043] At the same time, based on Figure 2 and Figure 8 As shown, the connecting sleeve 2 also has a small diameter section 207, the diameter of the small diameter section 207 is smaller than the inner diameter of the corresponding clamping sleeve 4, and the two ends of the small diameter section 207 have third steps 208 opposite to each other. The clamping sleeve 4 is provided with a limit pin 405 at the side wall corresponding to the small diameter section 207, and the limit pin 405 is located between the two third steps 208. In the default state, the limit pin 405 is located at the left end (attached Figure 8 The third step 208 of the connecting sleeve 2 (in the direction shown) abuts against the stop pin 405, and the position of the clamping sleeve 4 and the connecting sleeve 2 is kept fixed under the abutment of the first elastic member 404. When the clamping sleeve 4 is manually pulled toward the rear end of the connecting sleeve 2, the right end (attached Figure 8 The third step 208 (in the direction shown) abuts against the limit pin 405, and the clamping cylinder 4 cannot move further, so as to feedback that the clamping cylinder 4 has moved into place and the guide 3 can be inserted and removed.

[0044] Preferably, based on Figure 8 As shown, an outer edge 406 is provided around the outer side wall of the rear end of the clamping cylinder 4. After holding the rear end of the connecting sleeve 2, two fingers are used to move the outer edge 406, so that the axial movement between the connecting sleeve 2 and the clamping cylinder 4 can be achieved with one hand, and the guide 3 can be plugged in and out with the other hand. The operation of plugging in and out the guide 3 can be completed by one person, and the operation is convenient.

[0045] Further, based on Figure 8 As shown, a connection frame 209 is provided at the tail end of the connecting sleeve 2, the tail end of the connecting rod 1 passes through the connection frame 209, and the knob 101 is located in the connection frame 209. The connection frame 209 has a certain shielding effect on the knob 101, reducing the risk of misoperation. At the same time, a friction pad 103 is installed on the side wall of the knob 101 facing the tail end of the installation channel 201. When the connecting rod 1 is connected to the intervertebral fusion cage 100, the friction pad 103 is clamped between the knob 101 and the end edge of the installation channel 201. Under the damping effect of the friction pad 103, the knob 101 can be locked.

[0046] Further, based on Figure 8As shown, the side of the connection frame 209 away from the connection sleeve 2 has a mounting groove 210 coaxially arranged with the mounting channel 201, the tail end of the connecting rod 1 is inserted into the mounting groove 210, and a second elastic member 211 is sandwiched between the tail end of the connecting rod 1 and the bottom wall of the mounting groove 210. The second elastic member 211 is also preferably a spring, and a spring sheet or an elastic column can also be used. In the process of turning the knob 101 to connect the external thread 102 with the intervertebral fusion device 100, the second elastic member 211 gives an axial force to the connecting rod 1, so that a certain amount of power can be given to the external thread 102 to extend into the threaded hole in the intervertebral fusion device 100 during connection, thereby reducing the possibility of disengagement.

[0047] Further, based on Figure 5 As shown, the guide 3 is provided with a guide tube 304 corresponding to the screw hole on the intervertebral fusion device 100, and claws 305 are provided on the opposite side edges of the guide 3 away from the side wall of the connecting sleeve 2, and the intervertebral fusion device 100 can be clamped between the two claws 305. The guide tube 304 corresponds to the screw hole of the intervertebral fusion device 100. For intervertebral fusion devices 100 of different specifications, the angle and position of the guide tube 304 are also different. The guide tube 304 is a guide channel for instruments such as openers, bone drills, taps, and nail drivers. It can not only achieve guidance but also limit positioning to prevent instruments such as bone drills from drilling too deep and damaging nerves, and finally achieve accurate nail insertion. Intervertebral fusion devices 100 of different specifications can be matched by replacing guides 3 of different specifications.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An intervertebral fusion device holder, comprising a connecting rod (1) and a connecting sleeve (2), wherein the connecting sleeve (2) has an installation channel (201), and the connecting rod (1) is inserted into the installation channel (201); a knob (101) is installed at the tail side of the connecting rod (1), and the head end of the connecting rod (1) is provided with an external thread (102) extending from the head end of the connecting sleeve (2), and the external thread (102) is used to connect with the intervertebral fusion device (100); Features: A guide (3) is also provided; the head end of the installation channel (201) has a connecting section (202), and a gap is provided between the connecting section (202) and the connecting rod (1); the guide (3) is provided with a connecting tube (301), and the connecting tube (301) is detachably inserted into the connecting section (202), the head end of the connecting rod (1) is inserted into the connecting tube (301), and the end of the connecting rod (1) having an external thread (102) extends out of the connecting tube (301).

2. The intervertebral fusion cage holder according to claim 1, characterized in that: A rotation-stopping structure which is detachably connected to each other is provided between the connecting tube (301) and the connecting sleeve (2); the rotation-stopping structure comprises a polygonal inner wall (203) located at the connecting section (202) and a polygonal outer wall (302) located at the connecting tube (301); the shapes of the polygonal outer wall (302) and the polygonal inner wall (203) match each other, and the polygonal outer wall (302) is inserted into the polygonal inner wall (203).

3. The intervertebral fusion cage holder according to claim 1, characterized in that: The connecting sleeve (2) is provided with a through hole (204) on the side wall of the connecting section (202), a limiting ball (205) is placed in the through hole (204), and the outer side wall of the connecting tube (301) is provided with a clamping groove (303) aligned with the through hole (204); It also comprises a clamping sleeve (4) sleeved on the outside of the connecting sleeve (2), the clamping sleeve (4) being elastically movably connected along the axial direction of the connecting sleeve (2), and the head end of the clamping sleeve (4) having an avoidance section (401) whose inner diameter is larger than the outer diameter of the connecting sleeve (2); In a free state, the inner side wall of the clamping cylinder (4) blocks the through hole (204), and the limiting ball (205) is partially located in the connecting section (202); the clamping cylinder (4) can align the avoidance section (401) with the through hole (204) by axially moving along the connecting sleeve (2), and the limiting ball (205) can move away from the connecting section (202) and partially enter the avoidance section (401).

4. The intervertebral fusion cage holder according to claim 3, characterized in that: The diameter of the port of the through hole (204) facing the connecting section (202) is smaller than the diameter of the limiting ball (205).

5. The intervertebral fusion cage holder according to claim 3, characterized in that: The inner side of the rear end of the clamping cylinder (4) has a connecting cavity section (402), and the bottom wall of the connecting cavity section (402) has a first step (403); the connecting sleeve (2) has a second step (206) located in the connecting cavity section (402), and the second step (206) is arranged opposite to the first step (403); a first elastic member (404) is clamped between the first step (403) and the second step (206).

6. The intervertebral fusion cage holder according to claim 5, characterized in that: The connecting sleeve (2) further comprises a small diameter section (207), the diameter of the small diameter section (207) being smaller than the inner diameter of the corresponding clamping sleeve (4), and both ends of the small diameter section (207) comprising third steps (208) opposite to each other; The clamping cylinder (4) is provided with a limiting pin (405) at the side wall corresponding to the small-diameter section (207), and the limiting pin (405) is located between the two third steps (208).

7. The intervertebral fusion cage holder according to claim 5, characterized in that: An outer edge (406) is arranged around the outer side wall of the rear end of the clamping tube (4).

8. The intervertebral fusion cage holder according to claim 1, characterized in that: A connecting frame (209) is provided at the rear end of the connecting sleeve (2), the rear end of the connecting rod (1) passes through the connecting frame (209), the knob (101) is located in the connecting frame (209), and a friction pad (103) is installed on the side wall of the knob (101) facing the rear end of the installation channel (201).

9. The intervertebral fusion cage holder according to claim 8, characterized in that: The connecting frame (209) has a mounting groove (210) coaxially arranged with the mounting channel (201) on one side facing away from the connecting sleeve (2); the tail end of the connecting rod (1) is inserted into the mounting groove (210); and a second elastic member (211) is clamped between the tail end of the connecting rod (1) and the bottom wall of the mounting groove (210).

10. The intervertebral fusion cage holder according to claim 1, characterized in that: The guide (3) is provided with a guide tube (304) corresponding to the screw hole on the intervertebral fusion device (100), and claws (305) are provided on the opposite side edges of the side wall of the guide (3) away from the connecting sleeve (2), and the intervertebral fusion device (100) can be clamped between the two claws (305).