Visual quantifiable intervertebral bone grafting funnel

Abstract

The visual quantifiable intervertebral bone grafting funnel comprises a bone grafting funnel body and a bone grafting push rod which are matched with each other, the bone grafting funnel body comprises a funnel and a bone grafting channel pipe located at the lower end of a feeding port of the funnel, and the whole bone grafting funnel body is integrally manufactured. A feeding port and a bone grafting bin which are arranged side by side are arranged at the bottom of the funnel, the bone grafting bin is a cuboid box protruding downwards, and the bone grafting bin has the specified capacity and is used for containing aggregate with the specified bone grafting amount; the outer side of the lower portion of the bone grafting channel pipe is provided with a plurality of depth limiting protruding points to prevent the bone grafting channel pipe from entering the intervertebral space too deep. The intervertebral bone grafting funnel has the beneficial effects that (1) the intervertebral bone grafting funnel is made of a transparent plastic material, so that transparency and visibility are realized, the shielding of a metal funnel on tissues such as nerves and the like in an operation is avoided, and nerve injury is avoided; the bone grafting bin is designed in the funnel, the bone grafting amount can be quantified, and accuracy and reliability are achieved. (3) a depth limiting structure is designed on the surface of the funnel channel, the channel is prevented from entering the intervertebral space too deep, deep tissue is prevented from being damaged, and the bone grafting amount is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of medical orthopedic treatment instruments, in particular to a visible and quantifiable bone grafting funnel. Background Art

[0002] Spinal fusion is a fundamental surgical procedure for treating spinal disorders. Intervertebral bone grafting offers a high fusion rate and is a common surgical procedure. Bone grafting, performed through an anterior or posterior approach, creates bony union between the vertebrae and maintains thoracic or lumbar spine stability. Autologous or allogeneic bone is often used as the graft material. Rapid and sufficient implantation of the graft into the intervertebral space can shorten surgical time, improve surgical efficiency, and promote intervertebral fusion.

[0003] The existing intervertebral bone graft funnel is made of metal, has no internal visual effect, cannot measure the amount of bone graft, and has no depth limit design, which increases the operation time and operation risk. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a visual and quantifiable intervertebral bone grafting funnel with visible internal bone material and easy use.

[0005] The utility model is achieved through the following technical solutions:

[0006] The utility model is characterized by a visually quantifiable intervertebral bone grafting funnel comprising a matching bone grafting funnel body and a bone grafting push rod; the bone grafting funnel body comprises a funnel and a bone grafting passage tube located at the lower end of the feed inlet of the funnel, the entire bone grafting funnel body being integrally formed; a feed inlet and a bone grafting bin are arranged side by side at the bottom of the funnel, the bone grafting bin being a downwardly protruding rectangular parallelepiped box having a specified capacity for placing a specified amount of bone graft material;

[0007] The outer side of the lower part of the bone graft channel is provided with several depth-limiting protrusions to prevent the bone graft from entering too deep into the intervertebral space.

[0008] Further preferably, in the bone grafting funnel body, the feed opening at the bottom of the funnel is at the same height as the upper opening of the bone grafting bin.

[0009] Further preferably, in the bone graft funnel body, the depth-limiting protrusion at the lower part of the bone graft channel tube is 1.5 cm away from the lower end.

[0010] Further preferably, the bone graft push rod is thicker at the upper part and thinner in the middle and lower parts, and there is a limited step at the connection between the thick part and the thin part; the thick part serves as a handle; the thin part is the same length as the bone graft channel tube, and the outer diameter of the thin part is equivalent to the inner diameter of the bone graft channel tube. The bone graft push rod is used to insert into the bone graft channel tube from top to bottom and push the bone material into the intervertebral space.

[0011] Further preferably, the bone graft funnel body is made of a transparent plastic material to enable internal visibility.

[0012] Further preferably, in the bone graft funnel body, the bone graft chamber has a length, width and height of 3cm×2cm×1cm; the inner diameter of the bone graft channel tube is 9mm or 10mm, which is suitable for intervertebral spaces of different heights.

[0013] The beneficial effect of the utility model is that the visual and quantifiable intervertebral bone grafting funnel has a simple structure and is convenient and safe to use. Advantages:

[0014] (1) The patented intervertebral bone graft funnel is made of transparent plastic material, which enables transparent visualization. During surgery, the metal funnel is prevented from blocking nerves and other tissues, thus preventing nerve damage. This is especially true for minimally invasive surgery, where the field of view is small. The use of a metal funnel occupies the field of view, affecting surgical safety.

[0015] (2) The bone grafting chamber designed in the patented funnel can quantify the amount of bone graft accurately and reliably;

[0016] (3) A depth-limiting structure is designed on the surface of the funnel channel to prevent the channel from entering the intervertebral space too deeply, thereby avoiding damage to deep tissues and affecting the amount of bone graft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawing is a schematic structural diagram of the present utility model. Figure 1 Bone graft putter. Figure 2 、 Figure 3 The following are the main view and top view of the bone graft funnel body. Figure 4 is a combined state diagram, Figure 5 To use the state diagram.

[0018] In the figure: bone graft push rod 1, funnel 2, feed port 3, bone graft channel tube 4, bone graft chamber 5, depth limiting protrusion 6, and position limiting step 7. DETAILED DESCRIPTION

[0019] The accompanying drawings are a specific embodiment of the present utility model.

[0020] The utility model provides a visually quantifiable intervertebral bone grafting funnel, comprising a matching bone grafting funnel body and a bone grafting push rod 1; the bone grafting funnel body comprises a funnel 2 and a bone grafting channel tube 4 located at the lower end of a feed inlet 3 of the funnel, the entire bone grafting funnel body being made in one piece; the feed inlet 3 and a bone grafting bin 5 are arranged side by side at the bottom of the funnel, and the bone grafting bin is a downwardly protruding rectangular box having a specified capacity for placing a specified amount of bone graft material;

[0021] The outer side of the lower part of the bone graft channel is provided with a plurality of depth-limiting protrusions 6 to prevent the bone graft from entering the intervertebral space too deeply.

[0022] In the bone grafting funnel body, the feed opening 3 at the bottom of the funnel is at the same height as the upper opening of the bone grafting bin 5 .

[0023] In the bone graft funnel body, the depth-limiting protrusion 6 at the lower part of the bone graft channel tube is 1.5 cm away from the lower end.

[0024] The bone graft push rod 1 is thicker at the upper part and thinner at the middle and lower parts, and a limited step 7 is provided at the connection between the thick part and the thin part; the thick part serves as a handle; the thin part is the same length as the bone graft channel tube, and the outer diameter of the thin part is equivalent to the inner diameter of the bone graft channel tube. The bone graft push rod is used to be inserted into the bone graft channel tube from top to bottom to push the bone material into the intervertebral space.

[0025] The bone graft funnel body is made of transparent plastic material to achieve internal visualization.

[0026] The bone grafting funnel body contains a bone grafting chamber with a volume of 3cm×2cm×1cm; the inner diameter of the bone grafting channel tube is 9mm or 10mm, which is suitable for intervertebral spaces of different heights.

[0027] The bone graft push rod 1 is thick at the top and thin at the bottom, and the thin part is the same length as the bone graft channel.

[0028] The bone graft funnel body consists of a funnel 2 and a bone graft channel 4. The bone graft chamber 5 measures 3cm x 2cm x 1cm in length, width, and height. This allows the surgeon to determine the appropriate amount of bone to be grafted, ensuring adequate bone grafting for each patient. A depth-limiting protrusion 6, located 1.5cm from the distal end, prevents the channel from entering too deeply into the gap and damaging deep tissue.

[0029] The internal diameter of the bone graft channel tube is divided into two types: 9mm and 10mm, suitable for intervertebral spaces of different heights.

[0030] In the top view, the funnel 2 is oval, the bone graft chamber is rectangular, and the bone graft channel tube is circular.

[0031] The bone graft funnel is made of high-molecular polyethylene material and is transparent and visible.

[0032] Instructions: Pre-place a certain amount of bone granules into the bone graft chamber 5, just enough to fill it. Insert the lower end of the bone graft channel tube of the bone graft funnel into the intervertebral space. Place the bone granules through the inlet 3 into the funnel's bone graft channel tube 4. Use the bone graft pusher 1 to push the aggregate into the intervertebral space until all the aggregate is injected. Then, remove the visually quantifiable intervertebral bone graft funnel. Finally, insert the intervertebral fusion cage.

Claims

1. A visual and quantifiable intervertebral bone graft funnel, characterized by: The bone grafting funnel comprises a matching bone grafting funnel body and a bone grafting push rod; the bone grafting funnel body comprises a funnel and a bone grafting passage tube located below the feed inlet of the funnel, the entire bone grafting funnel body being integrally formed; the feed inlet and a bone grafting bin are arranged side by side at the bottom of the funnel, the bone grafting bin being a downwardly protruding rectangular box having a specified capacity for placing a specified amount of bone grafting material; The outer side of the lower part of the bone graft channel is provided with several depth-limiting protrusions to prevent the bone graft from entering too deep into the intervertebral space.

2. The visually quantifiable intervertebral bone graft funnel according to claim 1, characterized in that: In the bone grafting funnel body, the feed opening at the bottom of the funnel is at the same height as the upper opening of the bone grafting bin.

3. The visually quantifiable intervertebral bone graft funnel according to claim 1 or 2, characterized in that: In the bone graft funnel body, the depth-limiting protrusion at the lower part of the bone graft channel tube is 1.5 cm away from the lower end.

4. The visually quantifiable intervertebral bone graft funnel according to claim 1 or 2, characterized in that: The bone graft push rod is thicker at the top and thinner in the middle and lower parts. There is a limited step at the connection between the thick part and the thin part; the thick part serves as a handle; the thin part is the same length as the bone graft channel tube, and the outer diameter of the thin part is equivalent to the inner diameter of the bone graft channel tube. The bone graft push rod is used to insert into the bone graft channel tube from top to bottom and push the bone material into the intervertebral space.

5. The visually quantifiable intervertebral bone graft funnel according to claim 1 or 2, characterized in that: The bone graft funnel body is made of transparent plastic material to achieve internal visualization.

6. The visually quantifiable intervertebral bone graft funnel according to claim 1 or 2, characterized in that: In the bone graft funnel body, the bone graft chamber is 3cm long, 2cm wide and 1cm high; the inner diameter of the bone graft channel tube is 9mm or 10mm, which is suitable for intervertebral spaces of different heights.

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