Multifunctional limiting osteotome capable of being used for spinal surgery
By setting up deep shields and marking lines on the bone knife, the traditional bone knife cannot be controlled to control the depth of depth. Safe and efficient bone treatment.
Patent Information
- Application Number
- CN202420573533.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Traditional bone knives lack the function of marking and depth limiting, which makes it difficult to control the depth of chiseling during spinal surgery, and easily damage the spinal cord and nerve roots.
Designed a set of multi -functional limited bone knives, including three bone knives of different sizes. Each bone knife is set up above the blade mouth to limit the depth barrier and marked lines to limit and understand the depth of the cutting into the depth. The bilateral parallel sides are set on both sides to assist the bone of the intervertebral gap.
Through the design of the depth of the depth and the marking line, nerve and spinal cord damage caused by excessive depth of depth; bilateral parallel diagonal surface improves the efficiency and safety of the bone planting of the vertebral gap.
Smart Images
Figure CN222398637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bone knives, in particular to a set of multifunctional limited bone knives that can be used for spinal surgery. Background Art
[0002] Traditional bone knives do not have scale marks or depth limits. When used to chisel bone, it is not possible to clearly understand the chiseling depth. There is no function to limit the chiseling depth, which can easily damage the spinal cord and nerve roots. Summary of the invention
[0003] The purpose of the utility model is to provide a set of multifunctional limited bone knives that can be used for spinal surgery to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A set of multifunctional limited bone knives that can be used for spinal surgery consists of three bone knives of different sizes and models, each bone knife comprising a knife handle, a knife rod, a knife head and a depth limiting baffle, a recessed mark is set at the boundary between the knife rod and the knife head; a cutting edge is set at the lower end of the knife head, and a depth limiting baffle is set on the upper front part of the cutting edge to limit the cutting depth of the cutting edge when chiseling the vertebral plate; a marking line is set 1 cm above the cutting edge to understand the chiseling depth when chiseling the vertebral plate; bilateral parallel inclined surfaces are set on both sides of the knife head, which is used as a reamer for reaming end plate cartilage before intervertebral bone grafting.
[0006] As a further improvement of the above scheme, a handle 1 is fixedly provided on the upper end of the knife rod, which is conducive to controlling the force when using the bone knife; the upper end of the knife rod protrudes 12mm from the handle, which is conducive to the hammer applying force when chiseling bones.
[0007] As a further improvement of the above solution, the recessed mark is arranged 3 cm above the cutting edge, that is, it is used as a scale when reaming the endplate cartilage of the intervertebral space.
[0008] As a further improvement of the above solution, the depth limiting baffle is 2 mm high and 2 mm thick, and the upper two corners are arc-shaped.
[0009] As a further improvement of the above solution, the bilateral parallel inclined surfaces are blunt inclined surfaces and can be used as a reamer when reaming the endplate cartilage of the intervertebral disc.
[0010] As a further improvement of the above scheme, the knife handle 1 is an obtuse rectangular parallelepiped with a length, width and height of 6.0 cm, 1.5 cm and 1.5 cm respectively; the total length of the bone knife is 22 cm, the length of the knife bar is 19 cm, and the knife head is 3 cm; the knife bar is 1.0 cm wide and 0.3 cm thick;
[0011] The width of the blade gradually increases from the proximal end to the cutting edge to 1.2 cm, and the thickness gradually decreases from 0.3 cm to a sharp point.
[0012] As a further improvement of the above scheme, the sizes of the three bone knives are: the height of the depth limit baffle from the cutting edge is 6mm, and the width of the cutting edge is 12mm; the height of the depth limit baffle from the cutting edge is 8mm, and the width of the cutting edge is 10mm; the height of the depth limit baffle from the cutting edge is 10mm, and the width of the cutting edge is 8mm; they are used step by step when chiseling the vertebral plate, so that the operation can be carried out safely and efficiently.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model provides a set of multifunctional limited bone knives that can be used for spinal surgery. Since a limiting baffle is arranged above the cutting edge, the cutting depth of the cutting edge can be limited, thereby preventing the sudden cutting depth from being too large and damaging the nerves, spinal cord, etc.;
[0015] 2. The utility model has two parallel inclined planes on both sides of the blade head, which can be used to remove the intervertebral disc in the intervertebral space and the cartilage of the upper and lower end plates;
[0016] 3. The utility model provides a knife handle so that the bone knife can exert better force during use.
[0017] 4. The recessed mark and marking line on the cutter head of the utility model can be used as a scale line, so that the depth of the bone cutter can be more clearly understood during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The figure is a schematic diagram of the structure of a multifunctional limited bone knife that can be used in spinal surgery.
[0019] Figure 2 It is a front view of a single limited bone knife of the utility model.
[0020] Figure 3 It is a side view of a single limited bone knife of the utility model.
[0021] In the figure: 1. tool handle; 2. tool rod; 3. tool head; 4. depth limit baffle; 5. cutting edge; 6. recessed mark; 7. double-sided parallel inclined surfaces; 8. marking line. DETAILED DESCRIPTION
[0022] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0023] Example, see Figure 1-Figure 3A set of multifunctional limited bone knives that can be used for spinal surgery, the set of limited bone knives consists of three bone knives of different sizes and models, each bone knife includes a handle 1, a knife rod 2, a knife head 3 and a depth limiting baffle 4, a recessed mark 6 is set at the boundary between the knife rod 2 and the knife head 3; a cutting edge 5 is set at the lower end of the knife head 3, and a depth limiting baffle 4 is set on the upper front part of the cutting edge 5, which is used to limit the chiseling depth of the cutting edge 5 when chiseling the vertebral plate; a marking line 8 is set 1 cm above the cutting edge 5, which is used to understand the chiseling depth when chiseling the vertebral plate; bilateral parallel inclined surfaces 7 are set on both sides of the knife head 3, which are used as a reamer for removing end plate cartilage before intervertebral bone grafting.
[0024] A handle 1 is fixedly provided on the upper end of the knife bar 2, and the handle 1 is conducive to controlling the force when using the bone knife; the upper end of the knife bar 2 protrudes 12mm from the handle, which is conducive to the hammer applying force when chiseling bones.
[0025] The concave mark 6 is arranged 3 cm above the cutting edge 5, that is, it is used as a scale when reaming the end plate cartilage of the intervertebral space.
[0026] The depth limiting baffle 4 is 2 mm high and 2 mm thick, and the upper two side corners are designed to be arc-shaped.
[0027] The bilateral parallel inclined surfaces 7 are blunt inclined surfaces and can be used as a reamer when reaming the end plate cartilage of the intervertebral disc.
[0028] The knife handle 1 is a blunt-angled cuboid with a length, width and height of 6.0 cm, 1.5 cm and 1.5 cm respectively; the bone knife has a total length of 22 cm, the knife handle 2 is 19 cm long, and the knife head is 33 cm; the knife handle 2 is 1.0 cm wide and 0.3 cm thick;
[0029] The width of the blade head 3 from the proximal end to the cutting edge gradually increases to 1.2 cm, and the thickness gradually decreases from 0.3 cm to a sharp edge.
[0030] The sizes of the three bone knives are:
[0031] The height of the depth limit baffle 4 from the cutting edge 5 is 6 mm, and the width of the cutting edge 5 is 12 mm;
[0032] The height of the depth limit baffle 4 from the cutting edge 5 is 8 mm, and the width of the cutting edge 5 is 10 mm;
[0033] The height of the depth limit baffle 4 from the cutting edge 5 is 10 mm, and the width of the cutting edge 5 is 8 mm;
[0034] It is used step by step when chiseling the vertebral plate, making the operation safe and efficient.
[0035] Working principle of this utility model:
[0036] When chiseling the vertebral plate, the first step is to use a bone knife with a depth limit baffle 4 6mm away from the cutting edge, with the cutting edge 5 standing on the bone surface, and use a hammer to hit the knife rod 2 protruding from the upper end of the knife handle 1 until the knife head 3 chisels into the depth limit baffle 4. Hold the knife handle 1 and unscrew the chiseled bone. If the bone is not chiseled through, continue to repeat the above operation step by step with a limit bone knife 8mm and 10mm away from the cutting edge until the bone is chiseled through.
[0037] When removing the intervertebral disc in the intervertebral space, the blade head 3 can be chiseled into the intervertebral space. Pay attention to the concave mark 6 3 cm away from the cutting edge 5, so as to estimate the chiseling depth more clearly and avoid perforating the anterior longitudinal ligament; the bilateral parallel inclined surfaces 7 on both sides of the blade head 3 can be used for rotational removal of the intervertebral disc and the upper and lower end plate cartilages.
Claims
1. A set of multifunctional limited bone knives that can be used for spinal surgery, the limited bone knives are composed of three bone knives of different sizes and models, each bone knife includes a handle (1), a knife rod (2), a knife head (3) and a depth limit baffle (4), characterized in that: A recessed mark (6) is provided at the boundary between the knife bar (2) and the knife head (3); a cutting edge (5) is provided at the lower end of the knife head (3); a depth limiting baffle (4) is provided on the upper front part of the cutting edge (5) for limiting the cutting depth of the cutting edge (5) when chiseling the vertebral plate; a marking line (8) is provided 1 cm above the cutting edge (5) for understanding the cutting depth when chiseling the vertebral plate; and bilateral parallel inclined surfaces (7) are provided on both sides of the knife head (3) for use as a reamer when reaming the end plate cartilage before intervertebral bone grafting.
2. The multifunctional limited bone knife for spinal surgery according to claim 1, characterized in that: The upper end of the knife bar (2) is fixedly provided with a knife handle (1), and the knife handle (1) is conducive to controlling the force when using the bone knife; the upper end of the knife bar (2) protrudes from the knife handle (1) by 2 mm, which is conducive to the hammer applying force when chiseling bones.
3. The multifunctional limited bone knife for spinal surgery according to claim 1, characterized in that: The recessed mark (6) is arranged 3 cm above the cutting edge (5), and is used as a scale when ream- ing the endplate cartilage of the intervertebral space.
4. The multifunctional limited osteotome for spinal surgery according to claim 1, characterized in that: The depth limiting baffle (4) has a height of 2 mm and a thickness of 2 mm, and the upper two side corners are designed to be arc-shaped.
5. The multifunctional limited osteotome for spinal surgery according to claim 1, characterized in that: The bilateral parallel inclined surfaces (7) are blunt inclined surfaces and can be used as a reamer when reaming the endplate cartilage of the intervertebral disc.
6. The multifunctional limited osteotome for spinal surgery according to claim 4, characterized in that: The knife handle (1) is a blunt-angled cuboid with a length, width and height of 6.0 cm, 1.5 cm and 1.5 cm respectively; the total length of the bone knife is 22 cm, the length of the knife handle (2) is 19 cm, and the knife head (3) is 3 cm; the knife handle (2) is 1.0 cm wide and 0.3 cm thick; The blade head (3) gradually widens from the proximal end to the cutting edge to 1.2 cm, and the thickness gradually thins from 0.3 cm to a sharp edge.
7. The multifunctional limited osteotome for spinal surgery according to claim 6, characterized in that: The dimensions of the three bone knives are as follows: the height of the depth limit baffle (4) from the cutting edge (5) is 6 mm, and the width of the cutting edge (5) is 12 mm; the height of the depth limit baffle (4) from the cutting edge (5) is 8 mm, and the width of the cutting edge (5) is 10 mm; the height of the depth limit baffle (4) from the cutting edge (5) is 10 mm, and the width of the cutting edge (5) is 8 mm; when chiseling the vertebral plate, they are used step by step, so that the operation can be carried out safely and efficiently.