Interbody fusion cage implantation system

Abstract

The invention provides an interbody fusion cage implanting system, and belongs to the technical field of medical instruments. The interbody fusion cage implanting system comprises a fusion cage body, a fusion cage implanting holder and a fusion cage extractor, a bone grafting groove is formed in the fusion cage body, the bone grafting groove is formed between the upper end face and the lower end face of the fusion cage body, and an opening of the bone grafting groove faces the tail end of the fusion cage body; a holding clamping groove is formed in the side wall of the bone grafting groove, and an inner wall clamping groove is formed in the outer side wall of the fusion cage body; the fusion cage implanting holder is used for implanting the fusion cage body; and the fusion cage extractor is used for extracting the fusion cage body. According to the interbody fusion cage implanting system, after the fusion cage body is implanted into the body of a patient through the fusion cage implanting holder, broken bones are implanted through the opening in the rear end of the bone grafting groove, falling of the broken bones in the implanting process is avoided, the fusion cage body with the position needing to be adjusted can be taken out through the fusion cage extractor, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an intervertebral fusion device implantation system. Background Art

[0002] Severe spinal diseases often lead to spinal instability, which causes neck pain, back pain, and nerve compression leading to sensory and motor disorders in the limbs. In some spinal surgeries, in order to restore the physiological height of the diseased vertebra and maintain vertebral stability, it is generally necessary to insert an intervertebral fusion device. An intervertebral fusion device is an internal fixation device used clinically to treat lumbar instability. It has the advantages of corrosion resistance and good tissue compatibility. The compressive strength, fatigue tolerance, and biomechanical properties of the intervertebral fusion device meet the physiological requirements of the human body. The intervertebral fusion device is usually made of a high molecular polymer material to form an integral structure. In order to reduce the overall weight and facilitate vertebral bone fusion and regeneration, a bone grafting groove is usually opened between one or several pairs of relative surfaces, and bone blocks are placed in the bone grafting groove to promote bone growth and shorten bone fusion time. The bone grafting groove is generally set through the upper and lower end surfaces of the intervertebral fusion device and is set in the middle of the intervertebral fusion device. When in use, the broken bones need to be placed in the bone grafting groove before the intervertebral fusion device is implanted into the patient's body. During the implantation process, the implantation tools are inconvenient to use, which leads to prolonged operation time and the broken bones are prone to fall. The process of clearing the fallen broken bones leads to prolonged operation time. If the fallen broken bones are not cleared in place, it will affect the patient's recovery. In addition, the capacity of the bone grafting groove is small, the amount of bone grafting is small, and the contact area with the end plate is small, which may cause delayed bone healing and non-healing, loss of intervertebral height, fusion device sliding, etc., thereby leading to short-term and long-term complications and other problems, which are not conducive to the patient's recovery. During implantation, if the intervertebral fusion device is not placed in place, the intervertebral fusion device needs to be removed. When removing the intervertebral fusion device, it is easy to be clamped unstable, resulting in slippage, which prolongs the operation time. Summary of the invention

[0003] The purpose of the present invention is to provide an intervertebral fusion device implantation system, aiming to solve the problems that the intervertebral fusion device implantation process takes a long time, the broken bones in the bone grafting groove of the intervertebral fusion device are easy to fall off, and the bone grafting groove is too small, which is not conducive to intervertebral fusion and patient recovery.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an intervertebral fusion cage implantation system, comprising: A fusion device body, wherein a bone grafting groove is arranged inside the fusion device body, the bone grafting groove is U-shaped, the bone grafting groove is arranged between the upper and lower end surfaces of the fusion device body, the opening of the bone grafting groove is arranged toward the tail end of the fusion device body, the side wall of the bone grafting groove is arranged with a holding groove, the holding groove is arranged near the tail end of the fusion device body, the side wall of the bone grafting groove is arranged with an inner wall groove, and the inner wall groove is arranged near the front end of the fusion device body; A fusion device implantation holder is used for implanting the fusion device body, the fusion device implantation holder comprises a holding rod and a pressing rod, an installation space is arranged inside the holding rod, the pressing rod is inserted into the installation space and has the freedom to move in the installation space, a clamping hemisphere is arranged on the side wall of the front end of the holding rod, the clamping hemisphere has the freedom to slide into the installation space, a pressing assembly is arranged between the clamping hemisphere and the front end of the pressing rod, the front end of the holding rod is inserted into the bone grafting groove, the clamping hemisphere cooperates with the holding clamping groove to lock the fusion device body, the pressing rod is pressed, and the pressing assembly drives the clamping hemisphere to move into the installation space, thereby releasing the locking of the clamping hemisphere on the fusion device body; and A fusion device extractor is used to remove the fusion device body, and the fusion device extractor includes a removal rod and a front pressure rod. A accommodating space is provided inside the removal rod, and the opening of the accommodating space is provided at the rear end of the removal rod. The front pressure rod is penetrated in the accommodating space and has the freedom to move in the accommodating space. A card strip is provided on the side wall of the removal rod, and the card strip is provided close to the front end of the removal rod and has the freedom to slide out of the accommodating space. A front pressure assembly is provided between the card strip and the front end of the front pressure rod. When the front pressure rod is pressed, the front pressure assembly drives the card strip to move out of the accommodating space, and the card strip matches the inner wall slot to achieve locking of the fusion device body.

[0005] In one possible implementation, an expansion balloon is provided on the side wall of the fusion body, and the expansion balloon is arranged along the length direction of the fusion body. An injection port is provided at the tail end of the fusion body, and the injection port is connected to the interior of the expansion balloon. The injection port is used to inject bone cement into the expansion balloon.

[0006] In a possible implementation, a mounting frame is provided at the opening of the expansion balloon, a mounting groove is provided on the side wall of the fusion device body, the mounting frame is disposed in the mounting groove, and the mounting groove is connected to the injection port.

[0007] In a possible implementation, lamina grinding grooves are respectively provided on the upper and lower end surfaces of the fusion device body.

[0008] In a possible implementation, a clamping block is provided on the inner side of the clamping hemisphere, and the clamping block is located in the installation space. A pressing block is provided at the front end of the pressing rod, and when the pressing rod is pressed, the front end of the pressing block enters between the clamping block and the inner side wall of the holding rod, driving the clamping hemisphere to move into the installation space.

[0009] In a possible implementation, a limiting sleeve is provided at the tail end of the holding rod, a limiting block is provided on the pressing rod, the limiting block is located in the limiting sleeve and has the freedom to move in the limiting sleeve, and a second push spring is provided between the limiting block and the holding rod.

[0010] In a possible implementation, a side wall of the holding rod is provided with a positioning block, and two groups of the positioning blocks are respectively provided on the left and right sides of the holding rod, and the positioning blocks are used to abut against the rear end of the fusion device body.

[0011] In a possible implementation, a card plate is provided on the inner side of the card strip, and the card plate is located in the accommodating space. A front pressure block is provided at the front end of the front pressure rod. The front pressure rod is pushed forward, and the front end of the front pressure block is pushed into the side of the card plate away from the card strip, driving the card strip to move out of the accommodating space.

[0012] In a possible implementation, a first guide slope is provided on a side of the card plate away from the card strip, the first guide slope is provided at an end of the card plate close to the removal rod, a second guide slope is provided on the front end of the front pressure block close to the side wall of the card strip, the first guide slope matches the second guide slope, two groups of the card strips are symmetrically provided inside the removal rod, a side wall push spring is provided between the card plate and the side wall of the accommodating space, and the front end of the front pressure rod is located between the two groups of the card plates.

[0013] In one possible implementation, a gripping handle is provided at the tail end of the removal rod, a rotating groove is provided at the tail end of the gripping handle, a rotating cylinder is provided at the tail end of the removal rod, the opening of the rotating cylinder faces forward and is inserted into the rotating groove, the two are threadedly connected, the rotating cylinder has the freedom to move in the rotating groove, and the tail end of the front pressure rod is rotatably connected to the bottom of the rotating cylinder.

[0014] The beneficial effects of the intervertebral fusion cage implant system provided by the present invention are: Compared with the prior art, the invention is provided with a fusion device body, a fusion device implantation holder and a fusion device extractor. The bone grafting groove is arranged inside the fusion device body, the bone grafting groove is located between the upper and lower end surfaces of the fusion device body, the opening of the bone grafting groove is arranged at the tail end of the fusion device body, the fusion device body is implanted into the patient's body using the holder, and the broken bones are placed into the fusion device body from the opening at the rear end of the bone grafting groove, so as to avoid the broken bones from falling during the implantation of the fusion device body and improve the surgical efficiency. The inner wall of the bone grafting groove is provided with a holding card groove, the holding card groove is arranged near the tail end of the bone grafting groove, the holding card groove is convenient for the card installation of the fusion device implantation holder, increases the implantation stability and avoids the fusion device body from falling during the implantation process, the inner wall card groove is arranged on the inner wall of the fusion device body and is arranged near the front end of the fusion device body, the inner wall card groove is convenient for the holding of the fusion device extractor, when the fusion device body is not implanted in place, the inner wall card groove cooperates with the fusion device extractor to help remove the fusion device body, the fusion device implantation holder is provided with a holding rod and a pressing rod,The holding rod is provided with an installation space inside, the tail end of the holding rod is provided with an opening, the front end of the holding rod matches the shape of the bone grafting groove of the fusion device body, the front end of the holding rod is used to insert into the bone grafting groove of the fusion device body, the clamping hemisphere is slidably arranged on the side wall of the holding rod, arranged at the front end of the holding rod, and matches the holding clamping groove of the inner side wall of the bone grafting groove of the fusion device body, the pressing rod is penetrated in the installation space of the holding rod, and has the freedom to slide in the installation space, and a pressing group is arranged between the clamping hemisphere and the front end of the pressing rod In the initial state, the pressing rod has no force on the card-mounted hemisphere, the hemispherical surface of the card-mounted hemisphere is located on the outside of the holding rod, and the card-mounted hemisphere is card-mounted in the bone grafting groove of the fusion device body to hold the fusion device body to avoid the holding rod and the fusion device body from falling off during use. In the pressing state, the pressing rod is pressed, and the pressing assembly drives the card-mounted hemisphere to move into the installation space, releases the locking of the card-mounted hemisphere on the fusion device body, removes the holding rod from the fusion device body, completes the implantation of the fusion device body, and the fusion device remover is used. A take-out rod and a front pressure rod are provided, a receiving space is provided inside the take-out rod, an opening is provided at the tail end of the take-out rod, the front end of the take-out rod matches the shape of the bone grafting groove of the fusion device body, the front end of the take-out rod is used to insert into the bone grafting groove of the fusion device body, the card strip is slidably arranged on the side wall of the take-out rod, arranged at the front end of the take-out rod, and matches the inner wall card slot of the inner side wall of the bone grafting groove of the fusion device body, the front pressure rod is penetrated in the receiving space of the take-out rod, and has the freedom to slide in the receiving space, the card strip and the front end of the front pressure rod are slidably arranged on the side wall of the take-out rod, and ... A front pressure assembly is arranged between the two ends. In the initial state, the front pressure rod has no force on the card strip, and the card strip is stored in the side wall and the storage space of the storage space. In the use state, the front end of the removal rod is inserted into the bone grafting groove of the fusion device body, pushing the front pressure rod forward, and the front pressure assembly drives the card strip to move to the outside of the removal rod. The card strip enters the inner wall card groove of the inner side wall of the bone grafting groove of the fusion device body to achieve the locking of the fusion device body, increase the locking stability, avoid slipping during use, and facilitate the removal of the fusion device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the top view of the bone graft fusion device used in the embodiment of the present invention when the expansion balloon is not expanded; Figure 2 It is a schematic diagram of the top view of the structure of the bone graft fusion device used in the embodiment of the present invention when the expansion balloon is inflated; Figure 3 A schematic diagram of the internal structure of the bone graft fusion device used in an embodiment of the present invention when the expansion balloon is not expanded; Figure 4 A schematic diagram of the internal structure of the bone graft fusion device used in an embodiment of the present invention when the expansion balloon is inflated; Figure 5 It is a front view structural schematic diagram of a fusion device implantation holder used in an embodiment of the present invention; Figure 6 A schematic diagram of the internal structure of a fusion device implant holder used in an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of partial enlarged structure; Figure 8 A schematic front view of the structure of a fusion device extractor provided in an embodiment of the present invention; Fig. 9 Schematic diagram of the internal structure of the fusion device clamping and extracting device provided in an embodiment of the present invention in the initial state Figure 1 ; Fig.10 for Fig. 9 A partial enlarged schematic diagram of Fig.11 Schematic diagram of the internal structure of the fusion device clamping and extracting device provided by the embodiment of the present invention in use Figure 2 ; Fig.12 for Fig.11 A partial enlarged schematic diagram of .

[0017] In the figure: 1001, fusion device body; 1002, bone grafting groove; 1003, mounting frame; 1004, expansion balloon; 1005, injection port; 1006, injection channel; 1007, distribution outlet; 1008, holding slot; 1009, inner wall slot; 1010, vertebral plate grinding groove; 2001, holding rod; 2002, pressing rod; 2003, clamping hemisphere; 2004, clamping block; 2005, pressing block; 2006, first guide surface; 2007, second guide surface; 2008, first push spring; 2009, limit sleeve; 2010, limit block; 2011, second push spring; 2012, positioning block; 2013, handle; 2014, pressing plate; 3001, removal rod; 3002, clamping strip; 3003, clamping plate; 3004, first guide slope; 3005, side wall push spring; 3006, front pressure rod; 3007, front pressure block; 3008, second guide slope; 3009, holding handle; 3010, rotating cylinder; 3011, limit seat; 3012, limit top block; 3013, knocking pad; 3014, abutment block; 3015, positioning groove. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention 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 invention and are not intended to limit the present invention.

[0019] Please refer to Figures 1 to 12 A specific embodiment of an intervertebral fusion device implantation system provided by the present invention is now described, including a fusion device body 1001, a fusion device implantation gripper and a fusion device remover. A bone grafting groove 1002 is arranged inside the fusion device body 1001. The bone grafting groove 1002 is U-shaped and arranged between the upper and lower end surfaces of the fusion device body 1001. The opening of the bone grafting groove 1002 is arranged toward the tail end of the fusion device body 1001. The side wall of the bone grafting groove 1002 is provided with a gripping groove 1008. The gripping groove 1008 is arranged near the tail end of the fusion device body 1001. The bone grafting groove 1002 is provided with a gripping groove 1008. 2 is provided with an inner wall card groove 1009, and the inner wall card groove 1009 is arranged near the front end of the fusion device body 1001; the fusion device implantation holder is used to implant the fusion device body 1001, and the fusion device implantation holder includes a holding rod 2001 and a pressing rod 2002, and an installation space is arranged inside the holding rod 2001, and the pressing rod 2002 is penetrated in the installation space and has the freedom to move in the installation space, and a card-mounted hemisphere 2003 is arranged on the side wall of the front end of the holding rod 2001, and the card-mounted hemisphere 2003 has the freedom to slide into the installation space, and the card-mounted hemisphere 2003 and the pressing rod 20 02, a pressing assembly is arranged between the front ends of the holding rod 2001, the front end of the holding rod 2001 is inserted into the bone grafting groove 1002, the clamping hemisphere 2003 cooperates with the holding clamping groove 1008 to lock the fusion device body 1001, and the pressing rod 2002 is pressed, and the pressing assembly drives the clamping hemisphere 2003 to move into the installation space, and the locking of the clamping hemisphere 2003 on the fusion device body 1001 is released; the fusion device extractor is used to remove the fusion device body 1001, and the fusion device extractor includes a removal rod 3001 and a front pressure rod 3006, and a receiving space is arranged inside the removal rod 3001, and the opening of the receiving space is arranged at the removal At the tail end of the rod 3001, the front pressure rod 3006 is inserted into the accommodating space and has the freedom to move in the accommodating space. A card strip 3002 is arranged on the side wall of the removal rod 3001. The card strip 3002 is arranged close to the front end of the removal rod 3001 and has the freedom to slide out of the accommodating space. A front pressure component is arranged between the card strip 3002 and the front end of the front pressure rod 3006. When the front pressure rod 3006 is pressed, the front pressure component drives the card strip 3002 to move out of the accommodating space. The card strip 3002 matches the inner wall slot 1009, thereby realizing the locking of the card strip 3002 to the fusion device body 1001.

[0020] Compared with the prior art, the intervertebral fusion device implantation system provided by the present invention comprises a fusion device body 1001, a fusion device implantation gripper and a fusion device extractor. A bone grafting groove 1002 is arranged inside the fusion device body 1001. The bone grafting groove 1002 is located between the upper and lower end surfaces of the fusion device body 1001. The opening of the bone grafting groove 1002 is arranged at the rear end of the fusion device body 1001. The fusion device body 1001 is implanted into the patient's body using a gripper, and the broken bones are placed into the fusion device body 1001 from the opening at the rear end of the bone grafting groove 1002, so as to avoid the falling of broken bones during the implantation of the fusion device body 1001 and improve the surgical efficiency. A holding card slot 1008 is provided, and the holding card slot 1008 is arranged near the tail end of the bone grafting groove 1002. The holding card slot 1008 facilitates the clamping of the fusion device implantation holder, increases the implantation stability, and prevents the fusion device body 1001 from falling during the implantation process. The inner wall card slot 1009 is arranged on the inner side wall of the fusion device body 1001 and is arranged near the front end of the fusion device body 1001. The inner wall card slot 1009 facilitates the holding of the fusion device extractor. When the fusion device body 1001 is not implanted in place, the inner wall card slot 1009 cooperates with the fusion device extractor to help remove the fusion device body 1001. The fusion device implantation holder is provided with a holding rod 2001 and a pressing rod 2002.The holding rod 2001 is provided with an installation space inside, and the tail end of the holding rod 2001 is provided with an opening. The front end of the holding rod 2001 matches the shape of the bone grafting groove 1002 of the fusion device body 1001, and the front end of the holding rod 2001 is used to be inserted into the bone grafting groove 1002 of the fusion device body 1001. The clamping hemisphere 2003 is slidably arranged on the side wall of the holding rod 2001, and is arranged at the front end of the holding rod 2001, and matches the holding clamping groove 1008 of the inner side wall of the bone grafting groove 1002 of the fusion device body 1001. The pressing rod 2002 is penetrated in the installation space of the holding rod 2001 and has the freedom to slide in the installation space. There is a clamping hemisphere 2003 and the front end of the pressing rod 2002. The pressing assembly, in the initial state, the pressing rod 2002 has no force on the clamping hemisphere 2003, the hemispherical surface of the clamping hemisphere 2003 is located on the outside of the holding rod 2001, and the clamping hemisphere 2003 is clamped in the bone grafting groove 1002 of the fusion device body 1001, which is used to hold the fusion device body 1001 to avoid the holding rod 2001 and the fusion device body 1001 from falling off during use. In the pressing state, the pressing rod 2002 is pressed, and the pressing assembly drives the clamping hemisphere 2003 to move into the installation space, releases the locking of the clamping hemisphere 2003 on the fusion device body 1001, and takes the holding rod 2001 out of the fusion device body 1001 to complete the implantation of the fusion device body 1001. The removal rod 3001 and the front pressure rod 3006, the removal rod 3001 is provided with a accommodating space inside, the tail end of the removal rod 3001 is provided with an opening, the front end of the removal rod 3001 matches the shape of the bone grafting groove 1002 of the fusion device body 1001, the front end of the removal rod 3001 is used to insert into the bone grafting groove 1002 of the fusion device body 1001, the card strip 3002 is slidably arranged on the side wall of the removal rod 3001, arranged at the front end of the removal rod 3001, and matches the inner wall card slot 1009 of the inner side wall of the bone grafting groove 1002 of the fusion device body 1001, the front pressure rod 3006 is penetrated in the accommodating space of the removal rod 3001, and has the freedom to slide in the accommodating space, the card strip 3002 and A front pressure assembly is provided between the front ends of the front pressure rod 3006. In the initial state, the front pressure rod 3006 has no force on the card strip 3002, and the card strip 3002 is stored in the side wall and the storage space of the storage space. In the use state, the front end of the removal rod 3001 is inserted into the bone grafting groove 1002 of the fusion device body 1001, pushing the front pressure rod 3006 forward, and the front pressure assembly drives the card strip 3002 to move to the outside of the removal rod 3001. The card strip 3002 enters the inner wall card groove 1009 of the inner side wall of the bone grafting groove 1002 of the fusion device body 1001, realizing the locking of the fusion device body 1001, increasing the locking stability, avoiding slipping during use, and facilitating the removal of the fusion device body 1001.

[0021] For details, please refer to Figures 1 to 12The outer wall of the fusion device body 1001 is U-shaped, the opening of the U-shaped outer wall of the fusion device body 1001 is the tail end of the fusion device body 1001, the bone grafting groove 1002 is arranged inside the fusion device body 1001, and is located between the upper and lower end surfaces of the fusion device body 1001. In the height direction of the fusion device body 1001, the bone grafting groove 1002 is arranged in the middle of the fusion device body 1001, and the bone grafting groove 1002 is arranged along the length of the fusion device body 1001. The inner wall of the bone grafting groove 1002 is U-shaped, and the opening of the U-shaped inner wall of the bone grafting groove 1002 is located at the tail end of the fusion device body 1001. The holding card groove 1008 is arranged on the inner wall of the bone grafting groove 1002 and is arranged near the tail end of the bone grafting groove 1002. The holding card groove 1008 is provided with two groups, and the two groups of holding card grooves 1008 are symmetrically arranged. The inner wall card groove 1009 is arranged on the inner wall of the bone grafting groove 1002 and is close to the fusion device body 1 001 is provided at the front end, and two groups of inner wall slots 1009 are provided. The two groups of inner wall slots 1009 are symmetrically arranged. The inner wall slots 1009 are convenient for holding the fusion device extractor. When the fusion device body 1001 is not implanted in place, the inner wall slots 1009 cooperate with the fusion device extractor to help remove the fusion device body 1001. The fusion device implantation gripper is used to hold and implant the fusion device body 1001. The front end of the fusion device implantation gripper is inserted into the bone grafting groove 1002 from the opening at the rear end of the bone grafting groove 1002, and the fusion device is implanted into the patient's body. The fusion device implantation gripper is taken out, and the broken bones are put into the fusion device body 1001 from the opening at the rear end of the bone grafting groove 1002, so as to avoid the phenomenon of broken bones falling in the fusion device body 1001 during the implantation process of the fusion device body 1001, thereby improving the efficiency of the operation and the safety of the operation. The fusion device implantation gripper includes a gripping rod 2001 and a pressing rod 2002.An installation space is provided inside the holding rod 2001, and the pressing rod 2002 is inserted into the installation space from the opening at the tail end of the installation space, and has the freedom to slide along the length direction of the holding rod 2001. The card-mounted hemisphere 2003 is slidably provided on the side wall of the holding rod 2001, and has the freedom to slide perpendicular to the length direction of the holding rod 2001. The hemispherical surface of the card-mounted hemisphere 2003 is provided toward the outside of the holding rod 2001. Under normal conditions, the card-mounted hemisphere 2003 is located on the outside of the holding rod 2001. When the pressing rod 2002 is pressed, the pressing assembly drives the card-mounted hemisphere 2003 to move into the installation space, which is convenient for locking and unlocking the fusion device body 1001, helps to implant the fusion device body 1001, shortens the operation time, and prolongs the operation efficiency. The left-right direction of the fusion device extractor is defined as the width direction, and the front-back direction is the length direction. It includes a take-out rod 3001 and a front pressure rod 3006. The take-out rod 3001 is provided with a receiving space inside. The front pressure rod 3006 is inserted into the receiving space from the opening at the tail end of the receiving space and has the freedom to slide along the length direction of the take-out rod 3001. The card strip 3002 is slidably arranged on the side wall of the take-out rod 3001 and has the freedom to slide perpendicular to the length direction of the take-out rod 3001. Under normal conditions, the card strip 3002 is located in the take-out rod 3001. When in use, the front pressure rod 3006 is pushed, and the front pressure assembly drives the card strip 3002 to move out of the receiving space. The card strip 3002 enters the inner wall card slot 1009 of the inner side wall of the bone grafting groove 1002 of the fusion device body 1001 to achieve locking of the fusion device body 1001, increase the stability of the locking, avoid slipping of the sliding hammer during the hammering process, and facilitate the removal of the fusion device body 1001.

[0022] As a specific implementation of the intervertebral fusion cage implant system provided by the present invention, please refer to Figures 1 to 4 An expansion balloon 1004 is arranged on the side wall of the fusion device body 1001, and the expansion balloon 1004 is arranged along the length direction of the fusion device body 1001. An injection port 1005 is arranged at the tail end of the fusion device body 1001, and the injection port 1005 is connected to the inside of the expansion balloon 1004. The injection port 1005 is used to inject bone cement into the expansion balloon 1004. A mounting frame 1003 is arranged at the opening of the expansion balloon 1004. A mounting groove is arranged on the side wall of the fusion device body 1001, and the mounting frame 1003 is arranged in the mounting groove. The mounting groove is connected to the injection port 1005, and vertebral plate grinding grooves 1010 are respectively arranged on the upper and lower end surfaces of the fusion device body 1001.

[0023] For details, please refer to Figures 1 to 4The expansion balloon 1004 is arranged on the side wall of the fusion device body 1001. There are two groups of the expansion balloon 1004, which are respectively arranged on the left and right side walls of the fusion device body 1001. The two groups of the expansion balloon 1004 are symmetrically arranged, and the expansion balloon 1004 is arranged along the length direction of the fusion device body 1001. When the expansion balloon 1004 is not expanded, it is stored in the side wall of the fusion device body 1001 to avoid affecting the implantation of the fusion device body 1001. After the fusion device body 1001 is implanted into the patient's body, bone cement is injected into the expansion balloon 1004. The expansion balloon 1004 expands, which expands the contact area with the patient's vertebral end plate, increases the stability of the patient's vertebral support, and reduces the possibility of end plate collapse.

[0024] For details, please refer to Figures 1 to 4 The injection port 1005 is used to inject bone cement into the expansion balloon 1004. The injection port 1005 is arranged in a one-to-one correspondence with the expansion balloon 1004. Two groups of injection ports 1005 are respectively arranged on the left and right sides of the bone grafting groove 1002. One end opening of the injection port 1005 is arranged at the tail end of the fusion device body 1001, and the other end opening of the injection port 1005 is connected to the expansion balloon 1004.

[0025] For details, please refer to Figures 1 to 4 The mounting frame 1003 is arranged at the opening of the expansion balloon 1004, the expansion balloon 1004 is covered on the outer edge of the mounting frame 1003, the mounting groove is arranged on the side wall of the fusion device body 1001, and the mounting groove is arranged along the length direction of the side wall of the fusion device body 1001. The mounting frame 1003 is arranged to fit the bottom of the mounting groove. The expansion balloon 1004 is in an unexpanded state and is received in the mounting groove. The bottom of the mounting groove is connected with the injection port 1005, and the bone cement enters the opening of the expansion balloon 1004 through the injection port 1005. As the bone cement is injected, the expansion balloon 1004 gradually expands.

[0026] For details, please refer to Figures 1 to 4 An injection channel 1006 is provided in the fusion device body 1001, and the injection channel 1006 connects the injection port 1005 and the expansion balloon 1004. The injection channel 1006 and the injection port 1005 are arranged one-to-one, and the injection channel 1006 connects the injection port 1005 and the expansion balloon 1004 to facilitate the injection of bone cement.

[0027] For details, please refer to Figures 1 to 4The injection channel 1006 is arranged along the length direction of the mounting frame 1003, the first end of the injection channel 1006 is located on the inner side of the first end of the mounting frame 1003, the second end of the injection channel 1006 is located on the inner side of the second end of the mounting frame 1003, and the side wall of the injection channel 1006 is distributed with multiple groups of distribution outlets 1007, the distribution outlets 1007 are arranged along the length direction of the injection channel 1006, one end of the distribution outlet 1007 is connected to the injection channel 1006, and the other end is arranged at the bottom of the mounting groove, the distribution outlet 1007 connects the injection channel 1006 and the expansion balloon 1004, so as to facilitate the injection of bone cement into the front end of the expansion balloon 1004.

[0028] For details, please refer to Figures 1 to 4 There are two groups of vertebral plate grinding grooves 1010, which are respectively arranged on the upper end surface and the lower end surface of the bone grafting groove 1002. After the fusion device body 1001 is implanted into the patient's body, the grinding head of the end plate grinder passes through the fusion device body 1001 to grind the patient's vertebral end plate. After the grinding is completed, the end plate grinder is taken out and the crushed bones are implanted into the bone grafting groove 1002 to facilitate the bone fusion of the fusion device body 1001.

[0029] For details, please refer to Figures 1 to 4 The fusion device body 1001 is a 3D printed component. The upper and lower end surfaces of the fusion device body 1001 are microporous structures, which are convenient for bone fusion of the fusion device body 1001. The ribs of the fusion device body 1001 are solid structures, which increase the stability of the fusion device body 1001.

[0030] As a specific implementation of the intervertebral fusion cage implant system provided by the present invention, please refer to Figures 5 to 7 A clamping block 2004 is arranged on the inner side of the clamping hemisphere 2003 of the fusion device implant holder, and the clamping block 2004 is located in the installation space. A pressing block 2005 is arranged at the front end of the pressing rod 2002. The pressing rod 2002 is pressed, and the front end of the pressing block 2005 enters between the clamping block 2004 and the inner side wall of the holding rod 2001, driving the clamping hemisphere 2003 to move into the installation space. A limiting sleeve 2009 is arranged at the tail end of the holding rod 2001. A limit block 2010 is set on 2002, and the limit block 2010 is located in the limit sleeve 2009 and has the freedom to move in the limit sleeve 2009. A second push spring 2011 is set between the limit block 2010 and the holding rod 2001, and a positioning block 2012 is set on the side wall of the holding rod 2001. Two groups of positioning blocks 2012 are respectively set on the left and right sides of the holding rod 2001, and the positioning block 2012 is used to lean against the tail end of the fusion device body 1001.

[0031] For details, please refer to Figures 5 to 7The clamping block 2004 is arranged on the inner side of the clamping hemisphere 2003 and is located in the installation space. The clamping block 2004 prevents the clamping hemisphere 2003 from slipping out of the pressing rod 2002. A pressing block 2005 is arranged at the front end of the pressing rod 2002. There is a gap between the clamping block 2004 and the inner wall of the holding rod 2001. The pressing rod 2002 is pressed, and the pressing block 2005 enters the gap between the clamping block 2004 and the inner wall of the holding rod 2001. As the pressing block 2005 goes deeper, the clamping block 2004 is pushed away from the inner wall of the holding rod 2001, and the clamping hemisphere 2003 moves into the installation space to release the lock on the fusion device body 1001.

[0032] For details, please refer to Figures 5 to 7 A first guide surface 2006 is provided on the side of the clamping block 2004 close to the clamping hemisphere 2003, and the first guide surface 2006 is provided on the side of the clamping block 2004 close to the pressing rod 2002. The first guide surface 2006 is provided on the rear side of the clamping hemisphere 2003. As the clamping hemisphere 2003 is gradually moved away from the clamping hemisphere 2003, the distance between the first guide surface 2006 and the inner side wall of the pressing rod 2002 gradually increases. A second guide surface 2007 is provided on the side wall of the front end of the pressing block 2005 away from the clamping hemisphere 2003. The second guide surface 2007 is provided on the side away from the clamping hemisphere 2003. The first guide surface 2006 matches the second guide surface 2007. As the pressing block 2005 is gradually pushed forward, the clamping block 2004 is pushed away from the inner side wall of the holding rod 2001, and the clamping hemisphere 2003 moves into the installation space to release the lock on the fusion device body 1001.

[0033] For details, please refer to Figures 5 to 7 There are two groups of card-mounting hemispheres 2003, which are symmetrically arranged on the left and right sides of the holding rod 2001 to increase the stability of the card-mounting. Correspondingly, there are two groups of pressing blocks 2005, which are symmetrically arranged and correspond one to one with the two groups of card-mounting blocks 2004.

[0034] For details, please refer to Figures 5 to 7 A first push spring 2008 is arranged between the two groups of card-mounted hemispheres 2003. The first push spring 2008 is arranged between the opposite side walls of the two groups of card-mounted blocks 2004 and is arranged perpendicular to the length direction of the pressing rod 2002. The first push spring 2008 has a thrust on the card-mounted block 2004. In the initial state, the first push spring 2008 pushes the card-mounted hemisphere 2003 out of the pressing rod 2002.

[0035] For details, please refer to Figures 5 to 7The limiting sleeve 2009 is arranged at the tail end of the holding rod 2001, the pressing rod 2002 is inserted into the limiting sleeve 2009, and the tail end of the pressing rod 2002 passes through the limiting sleeve 2009. The inner diameter of the limiting sleeve 2009 is larger than the inner diameter of the pressing rod 2002. The limiting block 2010 arranged on the pressing rod 2002 is located in the limiting sleeve 2009. The limiting block 2010 has the freedom to move in the limiting sleeve 2009. The side wall of the tail end of the limiting sleeve 2009 prevents the limiting block 2010 from falling out, and the limiting sleeve 2009 limits the range of movement of the pressing rod 2002.

[0036] For details, please refer to Figures 5 to 7 The second push spring 2011 is arranged between the front end side wall of the limit block 2010 and the rear end side wall of the holding rod 2001. The second push spring 2011 is sleeved on the outside of the pressing rod 2002. The second push spring 2011 has a force to push the two away from each other. In the initial state, the second push spring 2011 pushes the pressing block 2005 away from the clamping block 2004, preventing the pressing block 2005 from exerting a force on the clamping block 2004, and preventing the clamping hemisphere 2003 from moving into the installation space.

[0037] For details, please refer to Figures 5 to 7 The side wall of the holding rod 2001 is provided with a positioning block 2012, and the positioning block 2012 is arranged on the rear side of the clamping hemisphere 2003. Two groups of positioning blocks 2012 are respectively arranged on the left and right sides of the holding rod 2001. When the holding rod 2001 is inserted into the fusion device body 1001, the front side wall of the positioning block 2012 is against the rear end of the fusion device body 1001, thereby increasing the stability of the device during use.

[0038] For details, please refer to Figures 5 to 7 A handle 2013 is provided at the tail end of the holding rod 2001 to facilitate holding the holding rod 2001.

[0039] For details, please refer to Figures 5 to 7 A pressing plate 2014 is provided at the tail end of the pressing rod 2002 to facilitate pressing the pressing rod 2002.

[0040] As a specific implementation of the intervertebral fusion cage implant system provided by the present invention, please refer to Figures 8 to 12A card-mounting plate 3003 is provided on the inner side of the card-mounting strip 3002 of the fusion device extractor, and the card-mounting plate 3003 is located in the accommodating space. A front pressing block 3007 is provided at the front end of the front pressing rod 3006. The front pressing rod 3006 is pushed forward, and the front end of the front pressing block 3007 is pushed into the side of the card-mounting plate 3003 away from the card-mounting strip 3002, driving the card-mounting strip 3002 to move out of the accommodating space; a first guiding inclined surface 3004 is provided on the side of the card-mounting plate 3003 away from the card-mounting strip 3002, and the first guiding inclined surface 3004 is provided at one end of the card-mounting plate 3003 close to the removal rod 3001, and a second guiding inclined surface 3008 is provided on the side wall of the card-mounting strip 3002 close to the front end of the front pressing block 3007. The inclined surface 3004 matches the second guiding inclined surface 3008, and the two groups of card strips 3002 are symmetrically arranged inside the removal rod 3001. A side wall pushing spring 3005 is arranged between the card plate 3003 and the side wall of the accommodating space, and the front end of the front pressure rod 3006 is located between the two groups of card plates 3003. A gripping handle 3009 is arranged at the tail end of the removal rod 3001, and a rotating groove is arranged at the tail end of the gripping handle 3009. A rotating cylinder 3010 is arranged at the tail end of the removal rod 3001. The opening of the rotating cylinder 3010 faces forward and is inserted into the rotating groove. The two are threadedly connected, and the rotating cylinder 3010 has the freedom to move in the rotating groove. The tail end of the front pressure rod 3006 is rotatably connected to the bottom of the rotating cylinder 3010.

[0041] For details, please refer to Figures 8 to 12 The card plate 3003 is arranged on the inner side of the card strip 3002 and is located in the accommodating space. The card plate 3003 prevents the card strip 3002 from slipping out of the removal rod 3001. A front pressure block 3007 is arranged at the front end of the front pressure rod 3006. The card plate 3003 is arranged away from the inner side wall of the removal rod 3001. The front pressure rod 3006 is pushed forward, and the front pressure block 3007 enters the side of the card plate 3003 away from the card strip 3002. As the front pressure block 3007 goes deeper, the card strip 3002 is pushed out of the side wall of the removal rod 3001, and the card strip 3002 moves out of the accommodating space to achieve locking of the fusion device body 1001.

[0042] For details, please refer to Figures 8 to 12The first guide slope 3004 is arranged on the side of the card plate 3003 away from the card strip 3002, and is arranged on the rear side of the card strip 3002. As the card plate 3003 gradually moves away from the card strip 3002, the thickness of the card plate 3003 gradually decreases. A second guide slope 3008 is arranged on the front end of the front pressure block 3007. The second guide slope 3008 is arranged on the side close to the card plate 3003. The first guide slope 3004 matches the second guide slope 3008. As the front pressure block 3007 gradually moves forward, the card strip 3002 is pushed out of the side wall of the removal rod 3001 to lock the fusion device body 1001. A positioning groove 3015 is arranged on the inner side wall of the front end of the removal rod 3001. The positioning groove 3015 matches the front end of the front pressure block 3007 to increase the stability of the device during use.

[0043] For details, please refer to Figures 8 to 12 The two sets of card strips 3002 are symmetrically arranged in the removal rod 3001 to increase the stability of the card installation. Correspondingly, the front pressure block 3007 is arranged between the two sets of card plates 3003.

[0044] For details, please refer to Figures 8 to 12 The side wall push spring 3005 is arranged between the card plate 3003 and the side wall of the accommodating space, and is located on the rear side of the card strip 3002. A spring groove for accommodating the side wall push spring 3005 is provided on the side wall of the accommodating space. The side wall push spring 3005 has the force to push the card plate 3003 away from the side wall of the accommodating space. The front end of the front pressure block 3007 is located between the two groups of card plates 3003, which facilitates the front pressure block 3007 to push the card plate 3003 to move toward the side wall of the accommodating space.

[0045] For details, please refer to Figures 8 to 12 , a receiving groove suitable for accommodating the card plate 3003 is provided on the side wall of the front pressure block 3007, and there are two groups of receiving grooves, which are respectively arranged on the left and right sides of the front pressure block 3007. During use, the front pressure rod 3006 moves forward, and the front pressure block 3007 pushes the card plate 3003 to the side wall of the accommodating space. The front pressure block 3007 continues to move forward to the front end of the accommodating space. At this time, the card plate 3003 is located in the receiving groove, and the front pressure block 3007 limits the card plate 3003 on the side wall of the accommodating space to increase the stability of the device.

[0046] For details, please refer to Figures 8 to 12The holding handle 3009 is set at the tail end of the removal rod 3001 for easy holding. The rotating groove is set at the tail end of the holding handle 3009, and the opening of the rotating groove is set toward the tail end. The opening of the rotating cylinder 3010 faces forward and is inserted into the rotating groove. The rotating cylinder 3010 is threadedly connected with the rotating groove. The rotating cylinder 3010 is rotated and moves forward in the rotating groove. The tail end of the front pressure rod 3006 is rotatably set at the bottom of the rotating cylinder 3010. The change of the rotation direction of the rotating cylinder 3010 realizes the change of the position of the rotating cylinder 3010, driving the front pressure rod 3006 to move forward and backward.

[0047] For details, please refer to Figures 8 to 12 A limiting seat 3011 is provided at the tail end of the holding handle 3009, and a limiting top block 3012 is provided on the front end side wall of the rotating cylinder 3010. The limiting top block 3012 can be leaned against the front end surface of the limiting seat 3011. A limiting ring groove is provided on the limiting seat 3011, and the rotating cylinder 3010 passes through the limiting ring groove. The limiting top block 3012 is provided on the inner side of the front end side wall of the rotating cylinder 3010. The thickness of the front end side wall of the rotating cylinder 3010 and the thickness of the limiting top block 3012 are greater than the width of the limiting ring groove. The limiting top block 3012 is located on the front side of the limiting seat 3011. The limiting seat 3011 prevents the rotating cylinder 3010 from falling out of the holding handle 3009 during use.

[0048] For details, please refer to Figures 8 to 12 The side wall of the removal rod 3001 is provided with a support block 3014, and the support block 3014 is arranged on the rear side of the clamping strip 3002. Two groups of support blocks 3014 are respectively arranged on the left and right sides of the removal rod 3001. When the removal rod 3001 is inserted into the fusion device body 1001, the front side wall of the support block 3014 is against the rear end of the fusion device body 1001, thereby increasing the stability of the device during use.

[0049] For details, please refer to Figures 8 to 12 A striking pad 3013 is provided at the tail end of the removal rod 3001, and the striking pad 3013 is used to buffer the hammering of the sliding hammer.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intervertebral fusion cage implant system, characterized in that: include: A fusion device body, wherein a bone grafting groove is arranged inside the fusion device body, the bone grafting groove is U-shaped, the bone grafting groove is arranged between the upper and lower end surfaces of the fusion device body, the opening of the bone grafting groove is arranged toward the tail end of the fusion device body, the side wall of the bone grafting groove is arranged with a holding groove, the holding groove is arranged near the tail end of the fusion device body, the side wall of the bone grafting groove is arranged with an inner wall groove, and the inner wall groove is arranged near the front end of the fusion device body; A fusion device implantation holder is used for implanting the fusion device body, the fusion device implantation holder comprises a holding rod and a pressing rod, an installation space is arranged inside the holding rod, the pressing rod is inserted into the installation space and has the freedom to move in the installation space, a clamping hemisphere is arranged on the side wall of the front end of the holding rod, the clamping hemisphere has the freedom to slide into the installation space, a pressing assembly is arranged between the clamping hemisphere and the front end of the pressing rod, the front end of the holding rod is inserted into the bone grafting groove, the clamping hemisphere cooperates with the holding clamping groove to lock the fusion device body, the pressing rod is pressed, and the pressing assembly drives the clamping hemisphere to move into the installation space, thereby releasing the locking of the clamping hemisphere on the fusion device body; and A fusion device extractor is used to remove the fusion device body, and the fusion device extractor includes a removal rod and a front pressure rod. A accommodating space is provided inside the removal rod, and the opening of the accommodating space is provided at the rear end of the removal rod. The front pressure rod is penetrated in the accommodating space and has the freedom to move in the accommodating space. A card strip is provided on the side wall of the removal rod, and the card strip is provided close to the front end of the removal rod and has the freedom to slide out of the accommodating space. A front pressure assembly is provided between the card strip and the front end of the front pressure rod. When the front pressure rod is pressed, the front pressure assembly drives the card strip to move out of the accommodating space, and the card strip matches the inner wall slot to achieve locking of the fusion device body.

2. The intervertebral fusion cage implant system according to claim 1, characterized in that: An expansion balloon is arranged on the side wall of the fusion device body, and the expansion balloon is arranged along the length direction of the fusion device body. An injection port is arranged at the tail end of the fusion device body, and the injection port is connected to the interior of the expansion balloon. The injection port is used to inject bone cement into the expansion balloon.

3. The intervertebral fusion cage implant system according to claim 2, characterized in that: A mounting frame is arranged at the opening of the expansion balloon, a mounting groove is arranged on the side wall of the fusion device body, the mounting frame is arranged in the mounting groove, and the mounting groove is connected to the injection port.

4. The intervertebral fusion cage implant system according to claim 1, characterized in that: The upper and lower end surfaces of the fusion device body are respectively provided with lamina grinding grooves.

5. The intervertebral fusion cage implant system according to claim 1, characterized in that: A mounting block is provided on the inner side of the mounting hemisphere, and the mounting block is located in the installation space. A pressing block is provided at the front end of the pressing rod. When the pressing rod is pressed, the front end of the pressing block enters between the mounting block and the inner side wall of the holding rod, driving the mounting hemisphere to move into the installation space.

6. The intervertebral fusion cage implant system according to claim 5, characterized in that: A limiting sleeve is arranged at the tail end of the holding rod, a limiting block is arranged on the pressing rod, the limiting block is located in the limiting sleeve and has the freedom to move in the limiting sleeve, and a second pushing spring is arranged between the limiting block and the holding rod.

7. The intervertebral fusion cage implant system according to claim 1, characterized in that: The side wall of the holding rod is provided with positioning blocks, and two groups of the positioning blocks are respectively arranged on the left and right sides of the holding rod, and the positioning blocks are used to abut against the tail end of the fusion device body.

8. The intervertebral fusion cage implant system according to claim 1, characterized in that: A card plate is provided on the inner side of the card strip, and the card plate is located in the accommodating space. A front pressure block is provided at the front end of the front pressure rod. When the front pressure rod is pushed forward, the front end of the front pressure block is pushed into the side of the card plate away from the card strip, driving the card strip to move out of the accommodating space.

9. The intervertebral fusion cage implant system according to claim 8, characterized in that: A first guide slope is provided on a side of the card plate away from the card strip, the first guide slope is provided at an end of the card plate close to the removal rod, a second guide slope is provided on the front end of the front pressure block close to the side wall of the card strip, the first guide slope matches the second guide slope, two groups of the card strips are symmetrically arranged inside the removal rod, a side wall pushing spring is provided between the card plate and the side wall of the accommodating space, and the front end of the front pressure rod is located between the two groups of the card plates.

10. The intervertebral fusion cage implant system according to claim 1, characterized in that: A gripping handle is provided at the tail end of the removal rod, a rotating groove is provided at the tail end of the gripping handle, a rotating cylinder is provided at the tail end of the removal rod, the opening of the rotating cylinder faces forward and is inserted into the rotating groove, the two are threadedly connected, the rotating cylinder has the freedom to move in the rotating groove, and the tail end of the front pressure rod is rotatably connected to the bottom of the rotating cylinder.

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