Bone grafting device

Abstract

The utility model provides a kind of bone grafting fusion ware, belong to medical instrument technical field.The utility model provides a kind of bone grafting fusion ware, including fusion ware body, fusion ware body inside is provided with bone grafting groove, bone grafting groove is U type, bone grafting groove is set between the upper and lower end surfaces of fusion ware body, the opening of bone grafting groove is towards the tail end of fusion ware body setting.The utility model provides a kind of bone grafting fusion ware, bone grafting groove is set in fusion ware body inside, the opening of bone grafting groove is set in the tail end of fusion ware body, after fusion ware body is implanted in patient's body, it is implanted by the opening of bone grafting groove rear end, avoid the drop of broken bone in implantation process, improve operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an implant fusion device. Background Technology

[0002] Severe spinal disorders often lead to spinal instability, causing neck and back pain, and nerve compression resulting in sensory and motor impairments in the limbs. In some spinal surgeries, interbody fusion cages are generally required to restore the physiological height of the affected vertebra and maintain vertebral stability. Interbody fusion cages are internal fixation devices used clinically to treat lumbar instability. They have advantages such as corrosion resistance and good tissue compatibility. The compressive strength, fatigue tolerance, and biomechanical properties of interbody fusion cages meet the physiological requirements of the human body. Interbody fusion cages are typically made of a single, integral structure of high-molecular polymer material. To reduce overall weight and facilitate vertebral bone fusion and regeneration, bone graft grooves are usually created between one or more pairs of opposing surfaces. Bone grafts are placed in these grooves to promote bone growth and shorten fusion time. Bone grafting slots are typically installed across the upper and lower ends of the interbody fusion cage and are located in the middle of the cage. During use, bone fragments are placed into the bone grafting slot before the interbody fusion cage is implanted into the patient. During implantation, bone fragments are prone to falling out, and the process of removing these fragments prolongs the operation time. If the fallen bone fragments are not properly removed, they can affect the patient's recovery. In addition, if the bone grafting slot is too small, the amount of bone grafted is small, and the contact area with the endplate is small, it may cause delayed bone healing or nonunion, loss of intervertebral disc height, and cage slippage, leading to short-term and long-term complications that are detrimental to the patient's recovery. Utility Model Content

[0003] The purpose of this invention is to provide a bone graft fusion device that addresses the problems of bone fragments easily falling out of the bone graft groove in intervertebral fusion devices and the small size of the bone graft groove, which are detrimental to intervertebral fusion and patient recovery.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bone graft fusion device is provided, including a fusion device body, wherein a bone graft groove is provided inside the fusion device body, the bone graft groove is U-shaped, the bone graft groove is disposed between the upper and lower end faces of the fusion device body, and the opening of the bone graft groove faces the tail end of the fusion device body.

[0005] In one possible implementation, an inflatable balloon is provided on the side wall of the fusion body, and the inflatable balloon is arranged along the length direction of the fusion body.

[0006] In one possible implementation, the tail end of the fusion device body is provided with an injection port, which communicates with the interior of the expansion balloon, and the injection port is used to inject bone cement into the expansion balloon.

[0007] In one possible implementation, an installation frame is provided at the opening of the inflatable balloon, an installation groove is provided on the side wall of the fusion device body, the installation frame is disposed in the installation groove, and the installation groove is connected to the injection port.

[0008] In one possible implementation, the fusion device body is provided with an injection channel that connects the injection port to the inflatable balloon.

[0009] In one possible implementation, the injection channel is arranged along the length of the bottom of the mounting groove, and the injection channel is connected to multiple sets of distributed outlets, which are connected to the injection channel and the inflatable balloon.

[0010] In one possible implementation, the sidewall of the bone graft groove is provided with a holding slot, which is located near the tail end of the fusion device body.

[0011] In one possible implementation, the sidewall of the bone graft groove is provided with an inner wall slot, which is located near the front end of the fusion device body.

[0012] In one possible implementation, the upper and lower end faces of the fusion device body are respectively provided with vertebral plate grinding grooves.

[0013] In one possible implementation, the fusion body is a 3D printed component, and the upper and lower end faces of the fusion body have a microporous structure.

[0014] The beneficial effects of the bone graft fusion device provided by this utility model are as follows:

[0015] Compared with existing technologies, this method features a fusion device body with a bone graft groove located inside the fusion device body between its upper and lower end faces. The opening of the bone graft groove is located at the tail end of the fusion device body. The fusion device body is implanted into the patient using a manipulator, and bone fragments are placed into the fusion device body through the opening at the rear end of the bone graft groove. This method avoids bone fragments falling out during the implantation of the fusion device body and improves surgical efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A top view of the bone graft fusion device provided in this embodiment of the present invention in the state of the inflatable balloon not being inflated;

[0018] Figure 2 A top view of the bone graft fusion device provided in this embodiment of the present invention in the expanded balloon state;

[0019] Figure 3 A schematic diagram of the internal structure of the bone graft fusion device provided in this embodiment of the utility model in the uninflated state of the expandable balloon;

[0020] Figure 4 This is a schematic diagram of the internal structure of the bone graft fusion device provided in the embodiment of the present invention in the inflatable balloon state.

[0021] In the diagram: 1. Fusion device body; 2. Bone graft groove; 3. Mounting frame; 4. Inflatable balloon; 5. Injection port; 6. Injection channel; 7. Distribution outlet; 8. Holding slot; 9. Inner wall slot; 10. Lamina grinding groove. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Please refer to Figure 1 as well as Figure 3 The present invention provides a specific embodiment of a bone graft fusion device, which includes a fusion device body 1, a bone graft groove 2 inside the fusion device body 1, the bone graft groove 2 being U-shaped, the bone graft groove 2 being disposed between the upper and lower end faces of the fusion device body 1, and the opening of the bone graft groove 2 being disposed facing the tail end of the fusion device body 1.

[0024] The bone graft fusion device provided by this utility model, compared with the prior art, is provided with a fusion device body 1, and a bone graft groove 2 is disposed inside the fusion device body 1. The bone graft groove 2 is located between the upper and lower end faces of the fusion device body 1, and the opening of the bone graft groove 2 is located at the tail end of the fusion device body 1. The fusion device body 1 is implanted into the patient's body using a holding device, and bone fragments are placed into the fusion device body 1 through the opening at the rear end of the bone graft groove 2, which avoids bone fragments falling off during the implantation of the fusion device body 1 and improves surgical efficiency.

[0025] For details, please refer to Figure 1 as well as Figure 3The device includes a fusion body 1, the outer wall of which is U-shaped, and the opening of the U-shaped outer wall of the fusion body 1 is the tail end of the fusion body 1. A bone graft groove 2 is located inside the fusion body 1 and between the upper and lower end faces of the fusion body 1. In the height direction of the fusion body 1, the bone graft groove 2 is located in the middle of the fusion body 1. The bone graft groove 2 is set along the length direction of the fusion body 1. The inner wall of the bone graft groove 2 is U-shaped, and the opening of the U-shaped inner wall of the bone graft groove 2 is located at the tail end of the fusion body 1. A holder is used to hold and implant the fusion body 1. The mounting part of the holder is inserted into the bone graft groove 2 through the opening at the rear end of the bone graft groove 2. The fusion body is implanted into the patient's body. The holder is removed, and the bone fragments are placed into the fusion body 1 through the opening at the rear end of the bone graft groove 2. This prevents the bone fragments in the fusion body 1 from falling out during the implantation process, thereby improving surgical efficiency and safety.

[0026] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 An expansion balloon 4 is provided on the side wall of the fusion body 1, and the expansion balloon 4 is arranged along the length direction of the fusion body 1.

[0027] For details, please refer to Figures 1 to 4 The inflatable balloon 4 is disposed on the side wall of the fusion device body 1. There are two sets of inflatable balloons 4, which are respectively disposed on the left and right side walls of the fusion device body 1. The two sets of inflatable balloons 4 are symmetrically disposed and are disposed along the length of the fusion device body 1. When the inflatable balloon 4 is not inflated, it is stored in the side wall of the fusion device body 1 to avoid affecting the implantation of the fusion device body 1. After the fusion device body 1 is implanted into the patient's body, bone cement is injected into the inflatable balloon 4. The inflatable balloon 4 inflates, which increases the contact area with the patient's vertebral endplate, increases the stability of the vertebral support, and reduces the possibility of endplate collapse.

[0028] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 The fusion device body 1 has an injection port 5 at its tail end, which is connected to the interior of the expansion balloon 4. The injection port 5 is used to inject bone cement into the expansion balloon 4.

[0029] For details, please refer to Figures 1 to 4 The injection port 5 is used to inject bone cement into the expansion balloon 4. The injection port 5 and the expansion balloon 4 are set one-to-one. The two sets of injection ports 5 are respectively set on the left and right sides of the bone graft groove 2. One end of the injection port 5 is set at the tail end of the fusion device body 1, and the other end of the injection port 5 is connected to the expansion balloon 4.

[0030] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4An installation frame 3 is provided at the opening of the inflatable balloon 4, and an installation groove is provided on the side wall of the fusion device body 1. The installation frame 3 is placed in the installation groove, and the installation groove is connected to the injection port 5.

[0031] For details, please refer to Figures 1 to 4 The mounting frame 3 is set at the opening of the expansion balloon 4, and the expansion balloon 4 covers the outer edge of the mounting frame 3. The mounting groove is set on the side wall of the fusion body 1 and is set along the length of the side wall of the fusion body 1. The mounting frame 3 is set to fit the bottom of the mounting groove. The expansion balloon 4 is housed in the mounting groove when it is not inflated. The bottom of the mounting groove is connected to the injection port 5. Bone cement is injected into the opening of the expansion balloon 4 through the injection port 5. As the bone cement is injected, the expansion balloon 4 gradually inflates.

[0032] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 The fusion device body 1 is provided with an injection channel 6, which connects the injection port 5 and the expansion balloon 4.

[0033] For details, please refer to Figures 1 to 4 The injection channel 6 is located inside the fusion device body 1. The injection channel 6 is set one-to-one with the injection port 5. The injection channel 6 connects the injection port 5 and the expansion balloon 4 to facilitate the injection of bone cement.

[0034] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 The injection channel 6 is set along the length of the bottom of the mounting groove. The injection channel 6 is connected to multiple sets of distribution outlets 7, and the distribution outlets 7 are connected to the injection channel 6 and the expansion balloon 4.

[0035] For details, please refer to Figures 1 to 4 The injection channel 6 is set along the length of the mounting frame 3. The first end of the injection channel 6 is located inside the first end of the mounting frame 3, and the second end of the injection channel 6 is located inside the second end of the mounting frame 3. Multiple distribution outlets 7 are distributed on the side wall of the injection channel 6. The distribution outlets 7 are set along the length of the injection channel 6. One end of the distribution outlet 7 is connected to the injection channel 6, and the other end is set at the bottom of the mounting groove. The distribution outlet 7 connects the injection channel 6 and the expansion balloon 4, which facilitates the injection of bone cement into the front end of the expansion balloon 4.

[0036] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figure 3 as well as Figure 4 The side wall of the bone graft groove 2 is provided with a holding slot 8, which is located near the tail end of the fusion device body 1.

[0037] For details, please refer to Figure 3 as well as Figure 4 The holding slot 8 is set on the inner side wall of the bone graft 2 and near the tail end of the bone graft 2. There are two sets of holding slots 8, which are symmetrically arranged. The holder is placed in the bone graft 2. The holding slot 8 facilitates the holding of the holder, increases the stability of the implantation, and prevents the fusion device body 1 from falling off during the implantation process.

[0038] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figure 3 as well as Figure 4 The side wall of the bone graft groove 2 is provided with an inner wall slot 9, which is located near the front end of the fusion device body 1.

[0039] For details, please refer to Figure 3 as well as Figure 4 The inner wall slot 9 is located on the inner side wall of the fusion body 1 and is located near the front end of the fusion body 1. There are two sets of inner wall slots 9, which are symmetrically arranged. The extractor is used to hold the fusion body 1. The two sets of locking strips of the extractor are locked in the inner wall slots 9. The inner wall slots 9 facilitate the holding of the extractor. When the fusion body 1 is not implanted in place, the inner wall slots 9, together with the extractor, help to remove the fusion body 1.

[0040] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 The upper and lower end faces of the fusion device body 1 are respectively provided with vertebral plate grinding grooves 10.

[0041] For details, please refer to Figures 1 to 4 Two sets of lamina grinding grooves 10 are provided, which are respectively set on the upper and lower end faces of the bone graft groove 2. After the fusion device body 1 is implanted into the patient's body, the grinding head of the endplate grinder passes through the fusion device body 1 to grind the vertebral endplate of the patient. After grinding is completed, the endplate grinder is removed and bone fragments are implanted into the bone graft groove 2 to facilitate bone fusion of the fusion device body 1.

[0042] As a specific embodiment of the bone graft fusion device provided by this utility model, please refer to Figures 1 to 4 The fusion body 1 is a 3D printed component, and the upper and lower end faces of the fusion body 1 have a microporous structure.

[0043] For details, please refer to Figures 1 to 4 The fusion device body 1 is made by 3D printing. The upper and lower end faces and side walls of the fusion device body 1 are provided with microporous structures to facilitate bone fusion. The ribs of the fusion device body 1 are solid structures to increase the stability of the fusion device body 1.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bone graft fusion device, characterized in that, The device includes a fusion unit body, and a bone graft groove is provided inside the fusion unit body. The bone graft groove is U-shaped and is located between the upper and lower end faces of the fusion unit body. The opening of the bone graft groove faces the tail end of the fusion unit body.

2. The bone graft fusion device as described in claim 1, characterized in that, An inflatable balloon is provided on the side wall of the fusion device body, and the inflatable balloon is arranged along the length direction of the fusion device body.

3. The bone graft fusion device as described in claim 2, characterized in that, The fusion device body has an injection port at its tail end, which connects to the interior of the expansion balloon. The injection port is used to inject bone cement into the expansion balloon.

4. The bone graft fusion device as described in claim 3, characterized in that, An installation frame is provided at the opening of the inflatable balloon, and an installation groove is provided on the side wall of the fusion device body. The installation frame is disposed in the installation groove, and the installation groove is connected to the injection port.

5. The bone graft fusion device as described in claim 4, characterized in that, The fusion device body is provided with an injection channel, which connects the injection port and the inflatable balloon.

6. The bone graft fusion device as described in claim 5, characterized in that, The injection channel is arranged along the length of the bottom of the mounting groove, and the injection channel is connected to multiple sets of distribution outlets. The distribution outlets are connected to the injection channel and the inflatable balloon.

7. The bone graft fusion device as described in claim 1, characterized in that, The side wall of the bone graft groove is provided with a holding slot, which is located near the tail end of the fusion device body.

8. The bone graft fusion device as described in claim 1, characterized in that, The side wall of the bone graft groove is provided with an inner wall slot, which is located near the front end of the fusion device body.

9. The bone graft fusion device as described in claim 1, characterized in that, The upper and lower end faces of the fusion device body are respectively provided with vertebral plate grinding grooves.

10. The bone graft fusion device as described in claim 1, characterized in that, The fusion unit body is a 3D printed component, and the upper and lower end faces of the fusion unit body have a microporous structure.

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