A bone grafting device for controlled depth and angle in spinal surgery

Abstract

The utility model relates to medical instrument technical field especially, more particularly to a kind of bone grafting device for controllable depth and angle of spinal surgery, comprising: bone grafting funnel and bone grafting stick;Wherein, bone grafting funnel includes: funnel main body, the curved section of the distal end of funnel main body is fixedly arranged, and the funnel pipe of the distal end of curved section is detachably arranged, and handle is fixedly arranged in one side of funnel main body;Wherein, funnel main body has funnel cavity, the inside of curved section has first lumen, the inside of funnel pipe has second lumen, funnel cavity is communicated with first lumen, and first lumen is communicated with second lumen;Wherein, curved section is the arc-shaped pipe that the radius is progressively contracted from proximal end to distal end, the included angle of 110 °-1150 ° is formed between the axis of funnel main body and the axis of funnel pipe through curved section;The utility model has significantly improved the precision, safety and efficiency of spinal surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a bone grafting device for spinal surgery with controllable depth and angle. Background Technology

[0002] In spinal surgery, bone grafting is a crucial step in achieving bone repair and fusion, and restoring spinal stability. However, current clinical bone grafting tools and techniques have many problems, seriously affecting surgical outcomes and patient recovery quality.

[0003] Traditional bone grafting tools are inadequate in terms of angle adjustment. The spinal anatomy is complex, with different segments possessing unique physiological curvatures and spatial relationships. However, common straight-tube bone grafting tools struggle to accommodate these complex angles, making it difficult to precisely deliver bone material to the target area during grafting. For instance, in anterior cervical spine surgery, due to the unique curvature of the cervical spine and the constraints imposed by surrounding important structures, traditional tools struggle to accurately place bone grafts into the intervertebral space, easily leading to uneven bone graft distribution, affecting the fusion outcome, and increasing the risk of pseudoarthrosis.

[0004] Depth control is also a major challenge. Precisely determining the bone graft depth is crucial for surgical success; grafts that are too deep or too shallow can lead to adverse consequences. However, existing tools generally lack reliable depth markers, forcing surgeons to rely on experience for estimation, resulting in significant errors in bone graft depth.

[0005] Blockages are a frequent occurrence during bone grafting. Traditional bone grafting tools often have poorly designed internal channels, allowing bone grafts to accumulate in narrow or curved areas, hindering the delivery of subsequent grafts. This blockage is particularly prevalent during large-volume bone grafting procedures, forcing surgeons to interrupt the operation to clear the blockage. This not only prolongs the procedure but also increases the risk of infection and reduces the efficiency and quality of the bone grafting process.

[0006] Furthermore, in traditional bone grafting procedures, it is difficult to precisely control the pressure applied. When manually packing bone granules, uneven pressure can damage surrounding tissues due to excessive force, or result in incomplete packing due to insufficient force, affecting the speed and strength of bone healing. At the same time, existing tools also have shortcomings in terms of ease of operation and visibility. The narrow surgical field and the defects in tool design increase the difficulty of operation for doctors, making it difficult to observe the bone graft status in real time and adjust the operation in a timely manner.

[0007] Therefore, it is essential to develop a novel bone grafting device with controllable depth and angle for spinal surgery. This device will effectively solve the aforementioned problems, improve surgical success rates, and enhance patient prognosis. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a bone grafting device with controllable depth and angle for spinal surgery.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is:

[0010] A bone grafting device for spinal surgery with controllable depth and angle includes: a bone grafting funnel and a bone grafting rod;

[0011] The bone graft funnel includes: a funnel body, a curved section fixedly disposed at the distal end of the funnel body, a funnel tube detachably disposed at the distal end of the curved section, and a handle fixedly disposed on one side of the funnel body.

[0012] The funnel body has a funnel cavity, the inside of the curved section has a first cavity, the inside of the funnel tube has a second cavity, the funnel cavity is connected to the first cavity, and the first cavity is connected to the second cavity.

[0013] The curved section is an arc-shaped tube with a radius that gradually decreases from the near end to the far end. The axis of the funnel body and the axis of the funnel tube form an angle of 110°-150° through the curved section. The funnel body has an open flared structure. The funnel tube has a first opening along the axial direction of the funnel tube. The outer surface of the funnel tube is marked with scale lines.

[0014] The funnel tube at the far end of the curved section is detachably connected via an angle adjustment component.

[0015] Furthermore, the open flared structure has a flared end, a contracted end, and a second opening;

[0016] The radius of the flared end is larger than that of the constricted end, and the flared end gradually shrinks towards the constricted end. The second opening is opened along the axial direction from the flared end to the constricted end, and the proportion of the second opening to the circumference of the funnel body is 30%-50%.

[0017] Furthermore, the diameter of the second lumen gradually narrows from the proximal end to the distal end, and the first opening occupies 30%-50% of the circumference of the funnel tube.

[0018] Furthermore, the surface of the handle is textured with a non-slip surface.

[0019] Furthermore, the graduation lines are coated with fluorescent material.

[0020] Furthermore, the bone graft rod includes: a bone graft rod shaft and a bone graft handle;

[0021] The bone graft rod is matched with the first and second lumens. The outer surface of the bone graft rod is marked with graduations, and an elastic silicone layer is fixedly installed on the bone graft handle.

[0022] Furthermore, the diameter of the funnel tube is reduced by 0.5 mm for every 1 mm of diameter at its distal end.

[0023] Furthermore, the angle adjustment component includes: a first fixed seat, a second fixed seat, and a fixing bolt;

[0024] The first fixed seat is fixedly installed at the bottom of the far end of the curved section, and a first threaded hole is opened along its own axial direction.

[0025] The second fixing seat is fixedly installed at the rear of the near end of the funnel tube, and a second threaded hole is opened along its own axial direction, and the diameter of the first threaded hole and the second threaded hole are the same.

[0026] The first fixed seat and the second fixed seat are connected by a fixing bolt passing through the first threaded hole and the second threaded hole in sequence to form a threaded connection, thereby realizing a detachable fixed connection between the two.

[0027] Furthermore, a funnel tube handle is threadedly connected to the rear part of the proximal end of the funnel tube.

[0028] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0029] This invention significantly improves the precision, safety, and efficiency of spinal surgery. Its curved section's arc design with a 130° angle allows the bone graft funnel to flexibly adapt to the complex anatomy of the spine, ensuring precise delivery of bone material to the target area and solving the angle adjustment problem of traditional tools. The open, flared funnel body facilitates rapid filling with bone material, while the second opening provides excellent visibility, ensuring uniform distribution of bone material and improving bone graft efficiency.

[0030] The fluorescent graduations on the outer surface of the funnel tube, combined with a progressive contraction design, enable visualized control of bone graft depth, preventing excessively deep or shallow grafting and reducing risks such as nerve damage. The precise fit between the graft rod and the lumen ensures smooth bone material delivery and accurate control of graft depth. The elastic silicone layer of the graft stem reduces tissue damage from manipulation, enhancing surgical safety. This device optimizes the bone grafting procedure, improves surgical success rates and patient recovery quality, and provides a reliable solution for spinal surgery. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0033] Figure 3 This is a rear view schematic diagram of the funnel tube in this utility model;

[0034] Figure 4This is a rear view structural diagram of the funnel body and the curved section in this utility model;

[0035] Figure 5 This is a side view of the funnel body and the curved section in this utility model.

[0036] Figure 6 This is a schematic diagram of the axial structure of the present invention with a funnel tube handle;

[0037] Figure 7 This is a schematic diagram of the axial structure of the bone graft rod in this utility model;

[0038] The reference numerals in the attached figures are:

[0039] 1. Bone graft funnel; 2. Bone graft rod; 11. Funnel body; 12. Bending section; 13. Funnel tube; 14. Handle; 131. First opening; 111. Second opening; 15. Angle adjustment component; 151. First fixing seat; 152. Second fixing seat; 16. Fixing bolt; 17. Funnel tube handle. Detailed Implementation

[0040] 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.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0043] Example

[0044] To achieve the above objectives, the technical solution adopted by the present invention in this embodiment is as follows:

[0045] A bone grafting device for spinal surgery with controllable depth and angle includes: a bone grafting funnel 1 and a bone grafting rod 2.

[0046] The bone graft funnel 1 includes: a funnel body 11, a curved section 12 fixedly disposed at the distal end of the funnel body 11, a funnel tube 13 detachably disposed at the distal end of the curved section 12, and a handle 14 fixedly disposed on one side of the funnel body 11.

[0047] The funnel body 11 has a funnel cavity, the inside of the curved section 12 has a first cavity, the inside of the funnel tube 13 has a second cavity, the funnel cavity is connected to the first cavity, and the first cavity is connected to the second cavity.

[0048] Among them, the curved section 12 is an arc-shaped tube with the radius gradually shrinking from the proximal end to the distal end. The funnel body 11 and the funnel tube 13 form a 130° angle between them through the curved section 12. The funnel body 11 is an open flared structure. The funnel tube 13 has a first opening 131 along the axial direction of the funnel tube 13. The outer surface of the funnel tube 13 has scale lines covered with fluorescent material. By observing the fluorescent scale lines on the outer surface of the funnel tube 13, the bone graft depth can be monitored in real time to avoid excessively deep or shallow bone grafting.

[0049] The open flared structure has a flared end, a contracted end, and a second opening 111;

[0050] The radius of the flared end is greater than the radius of the contracted end, and the flared end gradually contracts towards the contracted end. The second opening 111 is opened along the axial direction from the flared end to the contracted end, and the second opening 111 occupies 30% of the circumference of the funnel body 11.

[0051] The diameter of the second lumen gradually narrows from the proximal end to the distal end, and the first opening 131 occupies 30% of the circumference of the funnel tube 13. The diameter of the funnel tube 13 decreases by 0.5 mm for every 1 mm at the distal end. This gradual narrowing design helps to precisely control the release position of the bone material. The surface of the handle 14 is provided with anti-slip texture.

[0052] The bone graft rod 2 includes: a bone graft rod 21 and a bone graft handle 22;

[0053] The bone graft rod 21 is matched with the first and second lumens. The outer surface of the bone graft rod 21 is marked with graduations. The bone graft handle 22 is fixedly provided with an elastic silicone layer.

[0054] The funnel tube 13 at the far end of the curved section 12 is detachably connected by an angle adjusting member 15, which includes a first fixing seat 151, a second fixing seat 152 and a fixing bolt 16.

[0055] The first fixing seat 151 is fixedly disposed at the bottom of the far end of the curved section 12, and has a first threaded hole along its own axial direction.

[0056] The second fixing seat 152 is fixedly disposed at the rear part of the near end of the funnel tube 13, and a second threaded hole is provided along its own axial direction, and the diameter of the first threaded hole and the second threaded hole are the same.

[0057] The first fixing seat 151 and the second fixing seat 152 are connected by fixing bolts passing through the first threaded hole and the second threaded hole in sequence to form a threaded connection, thereby realizing the detachable fixed connection between the two.

[0058] In a preferred embodiment, the funnel tube (13) is threaded with a funnel tube handle (17) at the rear end near the proximal end.

[0059] In use, the funnel tube handle 17 is held, and the funnel tube 13 is rotated and inserted into the intervertebral space. By observing the fluorescent scale lines on the outer surface of the funnel tube 13, the doctor can monitor the bone graft depth in real time, avoiding excessively deep or shallow grafting. The funnel tube handle 17 is then removed. The curved section 12 and the funnel tube 13 are connected by a first fixation seat and a second fixation seat using fixing bolts that pass through the first and second threaded holes, forming a threaded connection that allows for detachable fixation. Because the distal end of the funnel tube 13 reduces in diameter by 0.5 mm for every 1 mm of diameter reduction, this progressive shrinkage design helps control the release position of the bone material.

[0060] Bone material, such as bone granules or bone cement, is poured into the bone graft funnel 1 through the open flared structure of the funnel body 11. The radius of the flared end is larger than that of the constricted end. This design facilitates the rapid filling of a large amount of bone material. At the same time, the second opening 111 occupies 30% of the circumference of the funnel body 11, providing good visibility and ensuring uniform distribution of bone material.

[0061] Using the bone graft rod 2, the bone material is pushed into the target area. The bone graft rod 21 matches the lumen of the bone graft funnel 1 to ensure smooth passage of the bone material. The scale on the outer surface of the bone graft rod 21 is combined with the scale line of the funnel tube 13, so the doctor can accurately control the bone graft depth and place the bone material accurately in the intervertebral space or other target positions.

[0062] In summary, this invention significantly improves the precision, safety, and efficiency of spinal surgery. Its curved section's arc design and 130° angle allow the bone graft funnel to flexibly adapt to the complex anatomy of the spine, ensuring precise delivery of bone material to the target area and solving the angle adjustment problem of traditional tools. The open, flared funnel body facilitates rapid filling with bone material, and the second opening provides excellent visibility, ensuring uniform distribution of bone material and improving bone graft efficiency.

[0063] The fluorescent graduations on the outer surface of the funnel tube, combined with a progressive contraction design, enable visualized control of bone graft depth, avoiding excessively deep or shallow grafts and reducing the risk of nerve damage. The precise matching of the graft rod to the lumen ensures smooth delivery of bone material, and the graft depth is accurately controllable. The elastic silicone layer of the graft stem reduces tissue damage caused by manipulation, improving surgical safety. This device optimizes the bone grafting procedure, improves surgical success rates and patient recovery quality, and provides a reliable solution for spinal surgery.

[0064] The above description of this utility model is merely a preferred embodiment of this utility model and does not limit the implementation method and protection scope of this utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of this utility model should be included within the protection scope of this utility model.

Claims

1. A bone grafting device for spinal surgery with controllable depth and angle, characterized in that, include: Bone graft funnel (1) and bone graft rod (2); The bone graft funnel (1) includes: a funnel body (11), a curved section (12) fixedly disposed at the distal end of the funnel body (11), a funnel tube (13) detachably disposed at the distal end of the curved section (12), and a handle (14) fixedly disposed on one side of the funnel body (11). The funnel body (11) has a funnel cavity, the inside of the curved section (12) has a first cavity, the inside of the funnel tube (13) has a second cavity, the funnel cavity is connected to the first cavity, and the first cavity is connected to the second cavity; The curved section (12) is an arc-shaped tube with a radius that gradually shrinks from the near end to the far end. The axis of the funnel body (11) and the axis of the funnel tube (13) form an angle of 110°-150° through the curved section (12). The funnel body (11) is an open flared structure. The funnel tube (13) has a first opening (131) along the axial direction of the funnel tube (13). The outer surface of the funnel tube (13) is marked with scale lines. The funnel tube (13) at the distal end of the curved section (12) is detachably connected by an angle adjustment member (15).

2. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The open flared structure has a flared end, a constricted end, and a second opening (111). Wherein, the radius of the flared end is greater than the radius of the contracted end, the flared end gradually contracts toward the contracted end, the second opening (111) is opened along the axial direction from the flared end toward the contracted end, and the second opening (111) occupies 30%-50% of the circumference of the funnel body (11).

3. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The diameter of the second lumen gradually narrows from the proximal end to the distal end, and the first opening (131) occupies 30%-50% of the circumference of the funnel tube (13).

4. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The surface of the handle (14) is provided with an anti-slip texture.

5. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The graduation lines are covered with fluorescent material.

6. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The bone graft rod (2) includes: a bone graft rod (21) and a bone graft handle (22). The bone graft rod (21) is matched with the first cavity and the second cavity. The outer surface of the bone graft rod (21) is marked with a scale. The bone graft handle (22) is fixedly provided with an elastic silicone layer.

7. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The distal end of the funnel tube (13) is reduced by 0.5 mm for every 1 mm of diameter.

8. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The angle adjustment component (15) includes: a first fixed seat (151), a second fixed seat (152), and a fixing bolt (16); The first fixing seat (151) is fixedly disposed at the bottom of the far end of the curved section (12) and has a first threaded hole along its own axial direction. The second fixing seat (152) is fixedly disposed at the rear part of the near end of the funnel tube (13), and a second threaded hole is provided along its own axial direction, and the diameter of the first threaded hole and the second threaded hole are the same. The first fixing seat (151) and the second fixing seat (152) are connected by the fixing bolt (16) passing through the first threaded hole and the second threaded hole in sequence to form a threaded connection, thereby realizing the detachable fixed connection between the two.

9. The bone grafting device for controllable depth and angle in spinal surgery according to claim 1, characterized in that, The funnel tube (13) is threaded with a handle (17) at the rear end near the end.

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