A terminal plate undercutting tool

Abstract

The utility model discloses a kind of end plate counter-sharpening tools, including tool bit, tool bit includes working part, working part has the fixed end surface being set as plane and the inclined surface and working surface connected to fixed end surface, the end of inclined surface and working surface away from fixed end surface respectively extends outward and intersects each other, to form common connecting end, fixed end surface, inclined surface and working surface are collectively enclosed to form hollow three-prism structure, first observation window is opened in working surface, one edge of connecting end and the side of first observation window close to connecting end are same, and set up the cutting edge for counter-sharpening end plate, so it can replace the spatula of prior art, to modify end plate bone surface, and the occupied space of tool bit is smaller.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endplate rebar cutter. Background Technology

[0002] UBE fusion surgery is a minimally invasive procedure that combines unilateral dual-channel endoscopic technology (UBE) with interbody fusion. It is mainly used to treat severe lumbar degenerative diseases (such as intervertebral disc herniation with lumbar instability, spinal stenosis with lumbar instability, lumbar spondylolisthesis, etc.).

[0003] During the UBE fusion surgery to treat the intervertebral disc, the space opens up after the intervertebral disc is released. If a traditional curette is used to trim the endplate bone surface, it is often difficult to achieve a satisfactory flatness, and it takes up a lot of space, which is not conducive to use in the limited space of the lesion site. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an endplate trimmer that can replace the scraper of the prior art for trimming the endplate bone surface, and the trimmer head occupies less space.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] This utility model provides a backing cutter for end plates, including a cutter head. The cutter head includes a working part, which has a fixed end face arranged in a plane, an inclined surface and a working surface connected to the fixed end face. The inclined surface and the working surface extend outward from the fixed end face and intersect each other to form a common connecting end. The fixed end face, the inclined surface and the working surface together form a hollow triangular prism structure. A hollow first observation window is opened in the working surface. One edge of the connecting end and one side of the first observation window near the connecting end are the same side, and a cutting edge for backing the end plate is provided.

[0007] Furthermore, the fixed end face, the inclined surface, and the working surface are all rectangular, and the triangular prism structure is a straight triangular prism structure.

[0008] Furthermore, the two opposite triangular faces of the triangular prism structure are each provided with a hollowed-out second observation window.

[0009] Furthermore, a third observation window with a hollowed-out design is provided within the inclined surface.

[0010] Furthermore, the outer edges of the working part are respectively provided with rounded corners.

[0011] Furthermore, it also includes a long rod; the cutter head also includes a connecting part connected to the working part, the connection between the working part and the connecting part is the fixed end face, and the working part is connected to one end of the long rod through the connecting part.

[0012] Furthermore, the cutter head and the long rod are integrally formed.

[0013] Furthermore, it also includes a handle; the handle is fitted to the end of the long rod opposite to the blade tip.

[0014] Furthermore, the connecting portion is larger at one end and smaller at the other end.

[0015] The technical solution provided by this utility model has the following beneficial effects:

[0016] By enclosing the fixed end face, the inclined surface, and the working surface together to form a triangular prism structure, a stable structure is formed, which is more conducive to operation and provides stronger rigidity. It also ensures that the working part of the cutter head occupies less space. Furthermore, one edge of the connecting end and one side of the first observation window near the connecting end are the same side, and a cutting edge is provided for back-cutting the endplate, thereby achieving effective trimming of the endplate bone surface and achieving a satisfactory flatness. This can replace the scraper of the prior art. Attached Figure Description

[0017] Figure 1 The image shown is a first-view schematic diagram of the endplate backing cutter in the embodiment.

[0018] Figure 2 The diagram shown is a second-view schematic of the endplate backing cutter in the embodiment. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference Figure 1 and Figure 2 This embodiment provides an endplate trimmer for trimming the endplate bone surface during UBE fusion surgery.

[0022] The endplate trimmer of this embodiment includes a blade head 1, a long rod 2, and a handle 3. The blade head 1 includes a working part 11 and a connecting part 12 connected together. The working part 11 is used to trim the endplate bone surface, and the working part 11 is connected to one end of the long rod 2 through the connecting part 12. The handle 3 is mounted on the other end of the long rod 2 away from the blade head 1. Of course, the long rod 2 can be selected in different lengths to correspond to the different thicknesses of the soft tissue in the lower back of different patients.

[0023] The working part 11 has a fixed end face 111 that is arranged in a plane, and an inclined surface 112 and a working surface 113 connected to the fixed end face 111. At this time, the connection between the working part 11 and the connecting part 12 is the fixed end face 111.

[0024] The inclined surface 112 and the working surface 113 extend outward from the fixed end face 111 and intersect each other to form a common connection end 119. The fixed end face 111, the inclined surface 112 and the working surface 113 together enclose and form a hollow triangular prism structure.

[0025] like Figure 2 As shown, a perforated first observation window 115 is provided in the working surface 113 to facilitate the doctor's observation of the lesion during the UBE fusion surgery.

[0026] One inner edge of the connecting end 119 and the side of the first observation window 115 near the connecting end 119 are the same side, and a cutting edge 116 for back-cutting the end plate is provided.

[0027] In this embodiment, the cutter head 1 and the long rod 2 are integrally formed to ensure high processing accuracy of each part. The outer edge of the working part 11 is provided with rounded corners to prevent abnormal protrusions such as burrs and barbs, so as to achieve a smooth outer surface and avoid damage to the cartilage and spine of the non-removable parts during operation.

[0028] By enclosing the fixed end face 111, the inclined surface 112 and the working surface 113 together to form a triangular prism structure, a stable structure is formed, which is more conducive to operation and provides stronger rigidity. It also ensures that the working part 11 of the cutter head 1 occupies less space. Furthermore, a cutting edge 116 is provided on one inner edge of the connecting end 119 for back-cutting the endplate and effectively trimming the bone surface of the endplate to achieve a satisfactory flatness. This can replace the scraper of the prior art.

[0029] In another preferred embodiment, the fixed end face 111, the inclined surface 112 and the working surface 113 are rectangular, and the triangular prism structure is a straight triangular prism structure. In this way, the triangular support formed by the triangular prism structure ensures that the working part 11 has good structural stability and is lightweight, and also makes it easy to insert the working part 11 into the lesion.

[0030] In addition, minimizing the overall size of the cutter head 1 also ensures both operational stability and flexibility.

[0031] Further preferred, such as Figure 2 As shown, in this embodiment, the two opposite triangular faces 114 of the triangular prism structure are respectively provided with a hollowed-out second observation window 117 to further facilitate doctors to observe the lesion during UBE fusion surgery.

[0032] Further preferred, such as Figure 2 As shown, a hollowed-out third observation window 118 is provided in the inclined surface 112 to further facilitate doctors to observe the lesion during UBE fusion surgery.

[0033] Further preferred, such as Figure 1 and Figure 2 As shown, the connecting part 12 is an inverted cone shape with one end larger than the other, in order to further reduce the volume occupied by the blade head 1, and thus facilitate its use in the limited space of the lesion.

[0034] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A final plate backing cutter, comprising a cutter head, the cutter head including a working part, characterized in that: The working part has a fixed end face arranged in a plane, and an inclined surface and a working surface connected to the fixed end face. The ends of the inclined surface and the working surface opposite to the fixed end face extend outward and intersect each other to form a common connecting end. The fixed end face, the inclined surface and the working surface together form a hollow triangular prism structure. A hollow first observation window is opened in the working surface. One edge of the connecting end and one side of the first observation window near the connecting end are the same side, and a cutting edge for back-cutting the end plate is provided.

2. The endplate backing tool according to claim 1, characterized in that: The fixed end face, the inclined surface, and the working surface are all rectangular, and the triangular prism structure is a straight triangular prism structure.

3. The endplate backing tool according to claim 2, characterized in that: The triangular prism structure has two openable second observation windows on its two opposite triangular faces.

4. The endplate backing tool according to claim 2, characterized in that: A third observation window with a hollowed-out design is provided within the inclined surface.

5. The endplate backing tool according to claim 1, characterized in that: The outer edges of the working part are respectively provided with rounded corners.

6. The endplate backing tool according to any one of claims 1-5, characterized in that: It also includes a long rod; the cutter head also includes a connecting part connected to the working part, the connection between the working part and the connecting part is the fixed end face, and the working part is connected to one end of the long rod through the connecting part.

7. The endplate backing tool according to claim 6, characterized in that: The cutter head and the long rod are integrally formed.

8. The endplate backing tool according to claim 7, characterized in that: It also includes a handle; the handle is fitted to the end of the long rod opposite to the blade tip.

9. The endplate backing tool according to claim 6, characterized in that: The connecting part is larger at one end and smaller at the other end.

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