An intervertebral bone implant

Abstract

The utility model provides an intervertebral bone grafting device belongs to medical equipment technical field. Including the bone grafting funnel and the bone grafting rod, the bone grafting funnel outer fixed surface is connected with the handle, the bone grafting funnel bottom outer surface is sleeved with the support frame, compaction subassembly, compaction subassembly is used to intercept the aggregate, compaction subassembly is connected with the handle. The utility model discloses a compaction subassembly is set up, and the palm heart presss the connecting plate and can drive the support flat plate to stretch out, and the support flat plate and the bone grafting funnel inner wall contour are in accord with, can effectively intercept the aggregate, and cooperate the bone grafting rod can be compacted to the aggregate, ensure the bone grafting quality, and the palm heart loosens the connecting plate, and the connecting plate can retract the support flat plate with the self elastic force, can transport the compacted aggregate at this moment, the ingenious design of support flat plate, connecting plate and fixed plate makes the installation and dismounting operation simple and easy.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an intervertebral bone graft device. Background Technology

[0002] Spinal degenerative diseases (such as herniated discs and spinal stenosis), trauma, or deformities often require intervertebral fusion surgery to restore intervertebral disc height, stabilize the spine, and promote bony fusion. Bone grafting is a key step in the surgery and directly affects the success rate of fusion.

[0003] In current bone grafting procedures, the conventional approach is to place bone fragments into a graft funnel and then, using the pushing force of a grafting rod, gradually advance the fragments to the patient's intervertebral opening. Currently, some graft funnels are circular straight tubes with smooth inner walls. With the assistance of the grafting rod, the bone fragments can slide relatively smoothly along the funnel's channel, ultimately reaching the patient's opening to promote postoperative bone fusion. However, due to their shape, after delivery, the bone fragments often accumulate loosely at the opening, failing to form an effective support structure. In the complex physiological environment of the human body, the intervertebral region needs to withstand certain pressures and dynamic stresses. Loose bone fragments cannot bear the responsibility of maintaining space and stabilizing the structure, which is detrimental to the biomechanical stability of the intervertebral region and may delay bone healing. Therefore, this application provides an intervertebral bone graft device to meet this need. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide an intervertebral bone graft device that incorporates a compaction component. Pressing the connecting plate with the palm extends the supporting plate, which aligns with the contour of the inner wall of the bone graft funnel, effectively trapping bone fragments. Combined with the bone graft rod, the fragments are compacted to ensure graft quality. Releasing the connecting plate with the palm allows it to retract the supporting plate using its own elasticity, enabling the delivery of compacted bone. The ingenious design of the supporting plate, connecting plate, and fixing plate simplifies installation and disassembly. Furthermore, the integrated injection molding design of the supporting plate, connecting plate, and fixing plate simplifies manufacturing and reduces production costs, thus addressing the problem of existing intervertebral bone graft devices with circular straight tube structures that can only deliver loose bone fragments.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An intervertebral bone graft device includes a bone graft funnel and a bone graft rod. A handle is fixedly connected to the outer surface of the bone graft funnel, and a support frame is sleeved on the bottom outer surface of the bone graft funnel. A compaction component is used to retain bone fragments, and the compaction component is connected to the handle.

[0006] Optionally, the compaction component includes a support plate inserted into the handle, slide rods fixedly connected to both sides of the support plate, a connecting plate fixedly connected to a section of the support plate away from the handle, and a fixing plate fixedly connected to the end of the connecting plate away from the support plate.

[0007] Optionally, the fixing plate has a conical structure, and the corners of the fixing plate are chamfered.

[0008] Optionally, a first slot is provided at the position corresponding to the grip of the fixing plate, the inner contour of the first slot matches the outer contour of the tapered structure of the fixing plate, and the fixing plate is inserted into the first slot.

[0009] Optionally, the outer contour of the support plate matches the inner contour of the bone graft funnel.

[0010] Optionally, a second slot is provided at the position corresponding to the grip of the support plate, and a guide groove is provided on the inner wall of the second slot, and the slide rod is slidably connected inside the guide groove.

[0011] Optionally, the connecting plate has an arc-shaped structure.

[0012] Optionally, the outer surface of the grip near the connecting plate is provided with an anti-slip groove, and the grip away from the connecting plate is provided with a groove that matches the contour of the fingers.

[0013] Optionally, both the outer contour of the bone graft rod and the inner contour of the bone graft funnel are rectangular structures, and the bottom contour of the bone graft funnel is duckbill-shaped.

[0014] Optionally, the length of the bone graft rod is the same as the internal length of the bone graft funnel, the bone graft rod is inserted into the inside of the bone graft funnel, and a funnel is provided between the top of the bone graft funnel and the top of the handle.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects: In the above scheme, by setting up a compaction component, pressing the connecting plate with the palm can drive the support plate to extend. The support plate matches the contour of the inner wall of the bone graft funnel, which can effectively intercept the fragmented bone material. With the help of the bone graft rod, the fragmented bone material can be compacted to ensure the quality of bone grafting. When the palm releases the connecting plate, the connecting plate can retract the support plate with its own elasticity. At this time, the compacted bone material can be transported. The ingenious design of the support plate, connecting plate and fixing plate makes the installation and disassembly operation simple. At the same time, the support plate, connecting plate and fixing plate adopt an integrated injection molding design, which simplifies the processing technology, makes it easy to manufacture, and reduces production costs.

[0016] By designing a handle with anti-slip grooves and a groove that conforms to the shape of the fingers, it is ergonomic, making it easier for medical staff to operate and improving the comfort and accuracy of operation. At the same time, when it is not necessary to compact the crushed aggregate, the thumb can pass through the support plate and cooperate with the anti-slip groove to effectively prevent the bone graft funnel from falling out of the hand when conveying compacted or filling aggregate. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0018] Figure 1 A schematic diagram of the overall structure of an intervertebral bone graft device; Figure 2 This is a schematic diagram of the cross-sectional structure of the grip; Figure 3 This is a schematic diagram of the compaction component structure; Figure 4 This is a magnified view of the structure at point A; Figure 5 This is a magnified schematic diagram of the grip structure.

[0019] Figure label: 1. Bone graft funnel; 2. Bone graft rod; 3. Handle; 301. First slot; 302. Second slot; 303. Guide groove; 4. Support plate; 401. Slide rod; 402. Connecting plate; 403. Fixing plate; 5. Support frame.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0021] The intervertebral bone graft device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0022] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0023] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0024] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0025] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0026] like Figure 1 and Figure 5As shown, an embodiment of this utility model provides an intervertebral bone graft device, including a bone graft funnel 1 and a bone graft rod 2. A handle 3 is fixedly connected to the outer surface of the bone graft funnel 1, and a support frame 5 is sleeved on the bottom outer surface of the bone graft funnel 1. The support frame 5 is existing technology and is used to place the bone graft funnel 1 at the patient's opening position to prevent the bone graft funnel 1 from entering the patient's opening when crushed bone material is pressed down. A compaction component is used to intercept the crushed bone material. The compaction component is connected to the handle 3. By setting the compaction component, pressing the connecting plate 402 with the palm can drive the support plate 4 to extend. The support plate 4 matches the contour of the inner wall of the bone graft funnel 1, which can effectively intercept the crushed bone material. With the help of the bone graft rod 2, the crushed bone material can be compacted to ensure the quality of bone grafting. When the palm releases the connecting plate 402, the connecting plate 402 can retract the support plate 4 by its own elasticity. At this time, the compacted bone material can be delivered.

[0027] In this embodiment, as Figures 1 to 5 As shown, the compaction assembly includes a support plate 4, which is inserted into the handle 3. Slide rods 401 are fixedly connected to both sides of the support plate 4. A connecting plate 402 is fixedly connected to a section of the support plate 4 away from the handle 3, and a fixing plate 403 is fixedly connected to the end of the connecting plate 402 away from the support plate 4. The connecting plate 402 has an arc-shaped structure. A second slot 302 is provided at the corresponding position of the support plate 4 and the handle 3. When the support plate 4 is inserted into the second slot 302, and the support plate 4 and the fixing plate 403 are squeezed and pressed inward, the connecting plate 402 will be driven to indent inward, thereby causing the fixing plate 403 to move downward. The fixing plate 403 has a conical structure. A first slot 301 is provided at the corresponding position of the fixing plate 403 and the handle 3. The inner contour of the first slot 301 is parallel to the outer contour of the fixing plate 403. The contours match, and the fixing plate 403 is inserted into the first slot 301. The corners of the fixing plate 403 are chamfered to facilitate insertion into the first slot 301. The inner wall of the second slot 302 is provided with a guide groove 303. The slide rod 401 is slidably connected inside the guide groove 303. The operator can hold the connecting plate 402 and move the support plate 4 along the guide groove 303 into the bone graft funnel 1. The outer contour of the support plate 4 matches the inner contour of the bone graft funnel 1. At this time, the bone fragments enter the bone graft funnel 1 through the funnel. The bone fragments will be intercepted by the support plate 4. The bone graft rod 2 can be used to compact the bone fragments. The support plate 4, the connecting plate 402 and the fixing plate 403 are injection molded as an integrated design. The processing technology is simple and easy to manufacture, and the cost is low.

[0028] In this embodiment, as Figures 1 to 5As shown, the outer surface of the handle 3 near the connecting plate 402 has an anti-slip groove, and the side of the handle 3 away from the connecting plate 402 has a groove. The groove matches the contour of the operator's fingers when gripping, which is ergonomically designed. When it is necessary to deliver the compacted bone material to the patient's intervertebral space, the palm can be slowly lifted, and the connecting plate 402 will return to its original position due to its elasticity, causing the support plate 4 to move backward. At this time, the thumb can pass through the connecting plate 402 to grip the handle 3 and continue to press down the bone graft rod 2. The bottom contour of the bone graft funnel 1 is duckbill-shaped, which can prevent blood from entering the bone graft funnel 1, and it is made of rubber. The compacted bone material will expand the duckbill outlet at the bottom of the bone graft funnel 1 until it is pushed to the intervertebral opening. The outer contour of the bone graft rod 2 and the inner contour of the bone graft funnel 1 are both rectangular structures. In intervertebral fusion surgery, the opening is often rectangular. The rectangular design makes it easier to deliver bone material to the patient's opening. The length of the bone graft rod 2 is the same as the internal length of the bone graft funnel 1, which plays a physical limiting role and can effectively prevent the bone graft rod 2 from being pushed out of the bone graft funnel 1 and causing accidental injury to the patient. The bone graft rod 2 is inserted into the inside of the bone graft funnel 1. A funnel is set between the top of the bone graft funnel 1 and the top of the handle 3.

[0029] The working principle of the technical solution provided by this utility model is as follows: In use, first insert the support plate 4 into the second slot 302 along the guide groove 303. Then, simultaneously press the support plate 4 and the fixing plate 403 inwards. Since the thickness of the connecting plate 402 is less than that of the support plate 4 and the fixing plate 403, the connecting plate 402 will bend under the pressure. At this time, align the fixing plate 403 with the first slot 301 and insert it. The support plate 4 will then be firmly fixed in the second slot 302. Subsequently, place the bone graft funnel 1 at the opening of the patient's intervertebral space. Thanks to the design of the support frame 5, the bone graft funnel 1 can be firmly fixed at the patient's opening. During operation, press the connecting plate 402 with your palm and hold it inwards. The connecting plate 402 is compressed, which pushes the support plate 4 along the guide groove 303 until it enters the bone graft funnel 1. At this time, the bone fragments can be poured into the bone graft funnel 1 through the funnel above the handle 3. The outer contour of the plate 4 perfectly matches the inner contour of the bone graft funnel 1, and the bone fragments are blocked by the supporting plate 4. Then, the bone graft rod 2 is inserted into the bone graft funnel 1 to compress the bone fragments and compact them on the supporting plate 4. After that, the palm is slowly lifted, and the connecting plate 402 returns to its original position due to its elasticity, causing the supporting plate 4 to move backward. At this time, the thumb passes through the connecting plate 402, grasps the handle 3, and continues to press down on the bone graft rod 2. The bone graft rod 2 pushes the compacted bone fragments downward. The compacted bone fragments will open the duckbill outlet at the bottom of the bone graft funnel 1 until it is pushed to the intervertebral foramen. The length of the bone graft rod 2 is similar to the internal length of the bone graft funnel 1, which plays a physical limiting role and can effectively prevent the bone graft rod 2 from being pushed out of the bone graft funnel 1 and causing accidental injury to the patient. If it is necessary to continue filling with bone fragments, simply pass the thumb through the connecting plate 402 and use the bone graft rod 2 to push the bone fragments to the designated filling site.

[0030] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An intervertebral bone graft device, comprising a bone graft funnel and a bone graft rod, characterized in that, A handle is fixedly connected to the outer surface of the bone graft funnel, and a support frame is sleeved on the bottom outer surface of the bone graft funnel. A compaction assembly for retaining crushed aggregate, the compaction assembly being connected to a handle; The compaction assembly includes a support plate inserted into the handle. Slide rods are fixedly connected to both sides of the support plate. A connecting plate is fixedly connected to a section of the support plate away from the handle, and a fixing plate is fixedly connected to the end of the connecting plate away from the support plate.

2. The intervertebral bone grafting instrument of claim 1, wherein The fixing plate has a conical structure and the corners of the fixing plate are chamfered.

3. The intervertebral bone graft device according to claim 2, characterized in that, The fixing plate has a first slot at the position corresponding to the grip. The inner contour of the first slot matches the outer contour of the tapered structure of the fixing plate, and the fixing plate is inserted into the first slot.

4. The intervertebral bone graft instrument of claim 1, wherein, The outer contour of the support plate matches the inner contour of the bone graft funnel.

5. The intervertebral bone graft instrument of claim 4, wherein, The support plate has a second slot at the position corresponding to the grip, and the inner wall of the second slot has a guide groove, and the slide rod is slidably connected inside the guide groove.

6. The intervertebral bone graft instrument of claim 1, wherein, The connecting plate has an arc-shaped structure.

7. The intervertebral bone graft device according to claim 1, characterized in that, The outer surface of the grip near the connecting plate has an anti-slip groove, and the grip away from the connecting plate has a groove that matches the contour of the fingers.

8. The intervertebral bone graft instrument of claim 1, wherein, Both the outer contour of the bone graft rod and the inner contour of the bone graft funnel are rectangular structures, and the bottom contour of the bone graft funnel is duckbill-shaped.

9. The intervertebral bone graft instrument of claim 1, wherein, The length of the bone graft rod is the same as the internal length of the bone graft funnel. The bone graft rod is inserted into the inside of the bone graft funnel. A funnel is provided between the top of the bone graft funnel and the top of the handle.

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