Bone grafting instrument

Abstract

The utility model relates to a bone grafting instrument. The bone grafting instrument comprises a handle, an extension tube, a sealing cover and a storage bin for placing broken bones, the front end of the handle protrudes from back to front to form a protruding part, the extension pipe is communicated with the protruding part, and the sealing cover is in threaded connection with the end, away from the extension pipe, of the handle. According to the bone grafting instrument, through the mechanical structure of the pushing rod and the pushing plate, broken bones can be rapidly and effectively pushed to the position between adjacent vertebrae from the storage bin, the operation efficiency is greatly improved, the operation time and discomfort of a patient are reduced, the top plate and the closing assembly are used in cooperation, the broken bones can be accurately controlled to be released in the pushing process, and the bone grafting effect is improved. Compared with the prior art, excessive scattering or blocking of broken bones is avoided, the accuracy and the success rate of an operation are guaranteed, in addition, the storage bin is closed through the closing assembly, the broken bones are effectively prevented from leaking in the pushing process, the clean and sterile state of an operation area is kept, and the infection risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a bone implantation device. Background Technology

[0002] Spinal fusion surgery has a history of nearly a century. As a fundamental skill for spinal surgeons, it is widely used in clinical practice. Spinal fusion plays a crucial role in restoring spinal stability in spinal trauma and degenerative spinal diseases. No matter how strong the internal fixation, even with three-dimensional, six-degree-of-freedom corrective devices, bony fusion is ultimately essential for achieving proper correction and the restoration of physiological alignment and stability.

[0003] Lumbar decompression, bone grafting, and internal fixation surgery plays a crucial role in treating lumbar degenerative diseases that have failed conservative treatment, and this surgical method is widely used in the medical community both domestically and internationally. However, the management of the bone graft gap during the procedure, especially the relatively low efficiency of traditional methods, remains a concern. Traditional methods require surgeons to use delicate tools such as forceps to carefully insert bone fragments one by one into the bottom of the graft gap and compact them thoroughly. This process is not only complex but also demands a high degree of patience and skill from the surgeon. Slight mistakes can lead to uneven distribution of bone fragments or inadequate grafting. Furthermore, due to the complexity of the procedure, the entire bone grafting process is often time-consuming, which not only increases the total surgical time but may also increase the patient's anesthesia risks and the risk of surgical complications. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a bone grafting device that solves the problem of low bone grafting efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bone implantation device, including a handle, an extension tube, a sealing cap, and a storage bin for placing bone fragments;

[0006] The front end of the handle protrudes from back to front to form a protrusion, the extension tube is connected to the protrusion, the sealing cap is threaded to the end of the handle away from the extension tube, and the storage bin is connected to the end of the extension tube away from the handle.

[0007] A push rod extending into the interior of the closed cover is connected through it, and a push plate that slides inside the storage bin is fitted at the front end of the push rod.

[0008] At least two closing components are provided on the storage bin. Corresponding to the two closing components, at least two top plates are assembled on the side of the push plate away from the push rod, and the at least two top plates are arranged at left and right intervals.

[0009] Furthermore, the axial line of the extension tube and the axial line of the handle are located in the same X-axis direction.

[0010] Furthermore, the length and width of the pusher plate in the ZY axis direction are adapted to the length and width of the storage bin in the ZY axis direction.

[0011] Furthermore, at least two of the top plates are respectively attached to the left and right sides of the inner wall of the storage silo.

[0012] Furthermore, a limiting ring is fitted on the inner peripheral wall of the handle near the protrusion, and a sleeve that fits against the inner wall of the closing cover is fitted on the outer side of the push rod.

[0013] A spring is fitted between the sleeve and the limiting ring.

[0014] Furthermore, both of the aforementioned closure components include an elastic element and a closure plate;

[0015] The two elastic components are respectively installed on the upper and lower sides of the storage bin, and the two closing plates are symmetrically attached to the front side of the storage bin and are respectively connected to the two elastic components.

[0016] Furthermore, the elastic element is an elastic steel sheet, and the length of the closing plate in the Z-axis direction is half the length of the storage bin in the Z-axis direction.

[0017] Furthermore, the storage bin is open on the side away from the extension tube.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] This bone grafting instrument, through its mechanical structure of a push rod and a push plate, can quickly and effectively push bone fragments from the storage chamber to the space between adjacent vertebrae, greatly improving surgical efficiency, reducing surgical time and patient discomfort. Moreover, the combined use of the top plate and the closure assembly allows for precise control of bone fragment release during the pushing process, preventing excessive scattering or blockage of bone fragments, thus ensuring the accuracy and success rate of the surgery. In addition, the storage chamber is sealed by the closure assembly, effectively preventing leakage of bone fragments during the pushing process, maintaining the cleanliness and sterility of the surgical area, and reducing the risk of infection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0023] In the diagram: 1. Handle; 2. Extension tube; 3. Sealing cover; 4. Storage bin; 5. Push rod; 6. Push plate; 7. Closing assembly; 701. Elastic component; 702. Closing plate; 8. Top plate; 9. Limiting ring; 10. Sleeve; 11. Spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-2 In this embodiment, a bone implantation device is used to push bone fragments between two adjacent vertebrae, thereby increasing the efficiency of bone fragment implantation.

[0026] Specifically, it includes a handle 1, an extension tube 2, a sealing cap 3, and a storage bin 4 for placing bone fragments; the front end of the handle 1 protrudes from back to front to form a protrusion, the extension tube 2 is connected to the protrusion, the sealing cap 3 is threaded to the end of the handle 1 away from the extension tube 2, and the storage bin 4 is connected to the end of the extension tube 2 away from the handle 1.

[0027] Inside the closed cover 3, there is a push rod 5 that extends into the extension tube 2. At the front end of the push rod 5, there is a push plate 6 that slides inside the storage bin 4. At least two closing components 7 are provided on the storage bin 4. Corresponding to the two closing components 7, at least two top plates 8 are provided on the side of the push plate 6 away from the push rod 5. The at least two top plates 8 are arranged at left and right intervals.

[0028] In actual use, bone fragments are placed inside the storage chamber 4, and the storage chamber 4 is closed by the closing component 7. Then, the storage chamber 4 is aligned with the gap between two adjacent vertebrae. By pushing the push rod 5, the push plate 6 and the top plate 8 move towards the closing component 7. When the top plate 8 continues to move forward, the closing component 7 can be opened. At this time, the bone fragments located inside the storage chamber 4 can be pushed between the two adjacent vertebrae, thus completing the implantation of bone fragments.

[0029] In actual operation, the mechanical structure of the push rod 5 and the push plate 6 can quickly and effectively push bone fragments from the storage bin 4 to the space between adjacent vertebrae, greatly improving surgical efficiency, reducing surgical time and patient discomfort. Moreover, the combined use of the top plate 8 and the closing component 7 allows for precise control of bone fragment release during the pushing process, preventing excessive scattering or blockage of bone fragments, and ensuring the accuracy and success rate of the surgery. In addition, the storage bin 4 is sealed by the closing component 7, effectively preventing leakage of bone fragments during the pushing process, maintaining the cleanliness and sterility of the surgical area, and reducing the risk of infection.

[0030] It is understood that the axial line of the extension tube 2 in this embodiment is located in the same X-axis direction as the axial line of the handle 1.

[0031] Furthermore, in order to ensure that the pusher plate 6 can push all the bone fragments inside the storage bin 4 during the movement process, and to avoid gaps between the pusher plate 6 and the storage bin 4, in this embodiment, the length and width of the pusher plate 6 in the ZY axis direction are adapted to the length and width of the storage bin 4 in the ZY axis direction, and at least two top plates 8 are respectively attached to the left and right sides of the inner wall of the storage bin 4.

[0032] In actual setup, since the length and width of the push plate 6 in the ZY axis direction match the storage bin 4, it ensures that the push plate 6 can closely fit the inner wall of the storage bin 4 during movement, thereby effectively pushing all the bone fragments inside the storage bin 4 and avoiding bone fragment residue. By eliminating the gap between the push plate 6 and the storage bin 4, it is ensured that the bone fragments will not be stuck or trapped in the storage bin 4 due to the gap during the pushing process, further improving the efficiency and success rate of bone fragment implantation.

[0033] Furthermore, in order for the push plate 6 and the push rod 5 to automatically rebound after the push rod 5 is released, in this embodiment a limiting ring 9 is installed on the inner peripheral wall of the handle 1 near the protrusion, and a sleeve 10 that fits against the inner wall of the sealing cover 3 is sleeved on the outer side of the push rod 5; a spring 11 is installed between the sleeve 10 and the limiting ring 9.

[0034] In actual use, after the push rod 5 is pressed, the sleeve 10 fixed on its outer side compresses the spring 11, so that the spring 11 has a certain elastic potential energy. After the push rod 5 is released, the spring 11 automatically rebounds and pushes the sleeve 10 and the push rod 5 to move backward.

[0035] In actual setup, the spring 11 is configured to provide the push rod 5 and push plate 6 with the ability to automatically rebound. After pushing the push rod 5 to push the bone fragments to the target position, when the push rod 5 is released, the spring 11 will use its elasticity to automatically rebound the push rod 5 and push plate 6 to the initial position, which facilitates the next operation and improves the efficiency of use.

[0036] Moreover, the automatic rebound mechanism reduces the workload of doctors, eliminating the need to manually reset the push rod 5 and push plate 6, thus reducing the number of steps in the surgical procedure and allowing doctors to focus more on the surgery itself.

[0037] Please see Figure 1 and 2 In order to close the storage bin 4, each of the two closing components 7 in this embodiment includes an elastic element 701 and a closing plate 702; the two elastic elements 701 are respectively installed on the upper and lower sides of the storage bin 4, and the two closing plates 702 are symmetrically attached to the front side of the storage bin 4 and are respectively connected to the two elastic elements 701.

[0038] In actual use, when the push plate 6 moves toward the closing plate 702, the two top plates 8 on the push plate 6 come into contact with the two closing plates 702. That is, when the push plate 6 moves, the two top plates 8 push the closing plates 702 open. At this time, the two closing plates 702 rotate in opposite directions, and the two elastic members 701 bend accordingly. At this time, the bone fragments inside the storage bin 4 can fall between the two closing plates 702.

[0039] In actual setup, the elastic element 701 provides elastic support for the closing plate 702, enabling the closing plate 702 to open and close flexibly. When the top plate 8 on the push plate 6 pushes the closing plate 702, the closing plate 702 can smoothly rotate in the opposite direction and open, allowing bone fragments to pass through. When the push rod 5 is released, the elastic element 701 will automatically pull the closing plate 702 back to its original position, achieving automatic closure and ensuring the sealing of the storage bin 4.

[0040] In addition, the closing plate 702 is symmetrically attached to the front side of the storage bin 4, forming a tight contact with the storage bin 4, which effectively prevents the leakage of bone fragments during transportation or storage, ensures the cleanliness and sterility of the surgical area during the operation, and reduces the risk of infection.

[0041] Moreover, the contact design between the top plate 8 and the closing plate 702 makes the release process of bone fragments more precise and controllable. Only when the push plate 6 moves to a certain position will the top plate 8 contact the closing plate 702 and push it open, thereby releasing the bone fragments. This design avoids the premature or late release of bone fragments, ensuring the accuracy and success rate of the operation.

[0042] Preferably, the elastic element 701 is an elastic steel sheet, the length of the closing plate 702 in the Z-axis direction is half the length of the storage bin 4 in the Z-axis direction, and the side of the storage bin 4 away from the extension tube 2 is open.

[0043] In actual setup, elastic steel sheet is used as elastic component 701 to ensure that the closing plate 702 can open quickly and stably when subjected to the thrust of the top plate 8, and can quickly spring back to the closed state after the thrust is released. The high strength and durability of the elastic steel sheet ensures the stability and reliability of long-term use.

[0044] Moreover, the length of the closing plate 702 in the Z-axis direction is half the length of the storage bin 4, which ensures sufficient opening space to allow bone fragments to pass through smoothly, and ensures a tight fit with the storage bin 4 when closed to prevent bone fragment leakage. At the same time, the shorter length of the closing plate 702 also helps to reduce the overall weight and improve the ease of operation.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bone implantation device, characterized in that: It includes a handle (1), an extension tube (2), a sealing cap (3), and a storage bin (4) for placing bone fragments; The front end of the handle (1) protrudes from back to front to form a protrusion. The extension tube (2) is connected to the protrusion. The sealing cover (3) is threaded to the end of the handle (1) away from the extension tube (2). The storage bin (4) is connected to the end of the extension tube (2) away from the handle (1). A push rod (5) with one end extending into the inside of the closed cover (3) is connected through the inside of the extension tube (2), and a push plate (6) that slides inside the storage bin (4) is fitted at the front end of the push rod (5). At least two closing components (7) are provided on the storage bin (4). Corresponding to the two closing components (7), at least two top plates (8) are assembled on the side of the push plate (6) away from the push rod (5). The at least two top plates (8) are arranged at left and right intervals.

2. The bone implant device according to claim 1, characterized in that: The axial line of the extension tube (2) and the axial line of the handle (1) are located in the same X-axis direction.

3. The bone implant device according to claim 1, characterized in that: The length and width of the push plate (6) in the ZY axis direction are adapted to the length and width of the storage bin (4) in the ZY axis direction.

4. The bone implant device according to claim 1, characterized in that: At least two of the top plates (8) are respectively attached to the left and right sides of the inner wall of the storage bin (4).

5. The bone implant device according to claim 1, characterized in that: A limiting ring (9) is fitted on the inner peripheral wall of the handle (1) near the protrusion, and a sleeve (10) that fits against the inner wall of the closing cover (3) is fitted on the outer side of the push rod (5). A spring (11) is fitted between the sleeve (10) and the limiting ring (9).

6. The bone implant device according to claim 1, characterized in that: Both of the aforementioned closing components (7) include a spring element (701) and a closing plate (702); The two elastic components (701) are respectively installed on the upper and lower sides of the storage bin (4), and the two closing plates (702) are symmetrically attached to the front side of the storage bin (4) and are respectively connected to the two elastic components (701).

7. The bone implant device according to claim 6, characterized in that: The elastic element (701) is an elastic steel sheet, and the length of the closing plate (702) in the Z-axis direction is half the length of the storage bin (4) in the Z-axis direction.

8. The bone implant device according to claim 6, characterized in that: The storage bin (4) is open on the side away from the extension tube (2).

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