Trigeminal neuralgia breast inrush approach repairing mesh plate

Abstract

A trigeminal neuralgia breast inrush approach repairing mesh plate comprises a mesh plate body, the edge position of the mesh plate body extends outwards to form a plurality of lapping pieces, the mesh plate body is provided with through holes, and the lapping pieces are provided with fixing holes. The screen plate body comprises a plane part with one side face being a plane and an arc-shaped part with the other side face being an arc face, the arc-shaped part is connected with the plane part, and the thickness of the screen plate body is gradually reduced in the direction from the plane part to the arc-shaped part; the mesh plate body is used for filling a bone window of a skull, and the lapping pieces fix the mesh plate body to the bone window of the skull through the fixing holes. During application, the design that the edge is gradually thinned is adopted, and postoperative foreign body sensation is reduced to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of skull defect repair, in particular to a repair mesh plate for the mastoid approach of trigeminal neuralgia. Background Technique

[0002] With the increase in the number of patients with trigeminal neuralgia and the implementation of the surgical method of microvascular decompression of the trigeminal nerve (the method of microvascular decompression is to open a bone window with a fixed size of about 3 cm behind the ear), more and more patients with skull defects after trigeminal neuralgia surgery enter the neurosurgery department. However, the skin behind the ear is thin, the subcutaneous soft tissue is less, and the skull defect will bring inconvenience to the patient's work and life, and the risk of brain tissue injury increases, which has an adverse impact on the patient's physiology.

[0003] For skull repair, it is usually achieved by reconstructing the skull; the principle and purpose of skull reconstruction are to establish a reliable barrier between the intracranial and extracranial structures to avoid cerebrospinal fluid leakage and intracranial infection. Since the size and location of the defect directly affect the reconstruction effect, skull repair is usually divided into embedded repair and covering repair. The commonly used reconstruction methods in the past include titanium mesh, autologous bone chips, and organic glass cement. Three-dimensional shaped titanium mesh has been widely used in the repair of calvarial bone defects, and many doctors have also used it in the reconstruction of skull base defects. Since the PEEK material has been approved for marketing and applied in bone transplantation, it has effectively solved the problems of thermal expansion and contraction, fast heat conduction, and metal artifacts of traditional titanium materials, and has become the first choice for titanium materials. However, in the process of using the existing mesh plate body, the patient often feels a foreign body, and the installed mesh plate body and the connecting piece are unstable, resulting in the mesh plate body being easily dropped into the bone window of the skull during the installation process. Content of the Utility Model

[0004] Aiming at the deficiencies in the background technique, the purpose of the utility model is to provide a repair mesh plate for the mastoid approach of trigeminal neuralgia.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A repair mesh plate for the mastoid approach of trigeminal neuralgia, including a mesh plate body. A plurality of tabs extend outward from the edge position of the mesh plate body. The mesh plate body is provided with through holes, and a plurality of the tabs are provided with fixing holes; the mesh plate body includes a flat portion with a flat side and an arc-shaped portion with an arc-shaped side. The arc-shaped portion is connected to the flat portion, and the thickness of the mesh plate body gradually decreases along the direction from the flat portion to the arc-shaped portion; the mesh plate body is used to fill the bone window of the skull, and the tabs fix the mesh plate body to the bone window of the skull through the fixing holes.

[0007] Furthermore, the thickness of the mesh plate body is 2 - 6 mm.

[0008] Further, the top surface of the mesh plate body is a convex arc surface, and its opposite bottom surface is a plane.

[0009] Further, several of the tabs are circumferentially distributed along the central axis of the mesh plate body.

[0010] Further, the tab includes a connecting portion and a fixing portion connected to each other. The connecting portion is fixed to the top surface of the mesh plate body, and the fixing hole is provided in the fixing portion.

[0011] Further, an opening is provided at the orifice of the fixing hole facing the top surface of the mesh plate body, and the width of the opening gradually increases along the direction towards the top surface of the mesh plate body.

[0012] Further, the tab and the mesh plate body are integrally formed, and the integral forming method is an additive manufacturing process.

[0013] Further, the additive manufacturing process is selective laser sintering or fused deposition modeling.

[0014] Further, the material of the mesh plate body and the tab is one of PEEK material or PEEK composite material.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. A repair mesh plate for the mastoid approach of trigeminal neuralgia proposed by the present utility model, through the setting of the thickness of the grid body, the thickness from the flat part to the arc part gradually changes from 6 mm to 2 mm, adopting an edge-thinning design, minimizing the postoperative foreign body sensation to the greatest extent.

[0017] 2. A repair mesh plate for the mastoid approach of trigeminal neuralgia proposed by the present utility model, through the setting of the flat part, the flat part adopts a wide design, increasing the contact area between the flat part and the skull, and ensuring the stability of the contact surface without increasing the foreign body sensation.

[0018] 3. A repair mesh plate for the mastoid approach of trigeminal neuralgia proposed by the present utility model, through the setting of the through holes, the porous design on the surface of the mesh plate body is convenient for postoperative drainage operation.

[0019] 4. A repair mesh plate for the mastoid approach of trigeminal neuralgia proposed by the present utility model, through the setting of the tabs, connecting and fixing the fragments or defective parts of the skull, thereby restoring the integrity and stability of the skull, contributing to promoting the skull healing process, and accelerating the formation and regeneration of new bone. The tabs can be directly fixed to the skull with screws. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 One of the schematic diagrams of a repair mesh plate for the mastoid approach of trigeminal neuralgia according to the present utility model;

[0022] Figure 2 Another schematic diagram of a repair mesh plate for the mastoid approach of trigeminal neuralgia according to the present utility model;

[0023] Figure 3 The top view of a repair mesh plate for the mastoid approach of trigeminal neuralgia according to the present utility model;

[0024] Figure 4 The side view of a repair mesh plate for the mastoid approach of trigeminal neuralgia according to the present utility model.

[0025] In the figure, 10 is the mesh plate body; 20 is the tab; 101 is the through hole; 201 is the fixing hole; 102 is the flat part; 103 is the arc part. Detailed implementation manners

[0026] The following will be combined with Figures 1-4 to describe the present utility model in detail.

[0027] A repair mesh plate for the mastoid approach of trigeminal neuralgia, as Figures 1-3 shown, includes a mesh plate body 10. A plurality of tabs 20 extend outward from the edge position of the mesh plate body 10. The mesh plate body 10 is provided with through holes 101, and a plurality of the tabs 20 are provided with fixing holes 201; the mesh plate body 10 includes a flat part 102 with a flat side surface and an arc part 103 with an arc side surface. The arc part 103 is connected to the flat part 102, and the thickness of the mesh plate body 10 gradually decreases along the direction from the flat part 102 to the arc part 103; the mesh plate body 10 is used to fill the bone window of the skull, and the tab 20 fixes the mesh plate body 10 to the bone window of the skull through the fixing hole 201.

[0028] The maximum diameter of the mesh plate body 10 is preferably 33 mm, and the straight-line distance at the edge of its flat part 102 is preferably 21 mm. From the flat part 102 to the position farthest from the flat part 102 on the arc part 103, the thickness of the mesh plate body 10 gradually changes from 6 mm to 2 mm. Through the design of gradually thinning at the edge, the foreign body sensation after surgery is minimized to the greatest extent. The design of the flat part 102 enables the mesh plate body 10 to be easily placed into the defective bone window during the operation.

[0029] The aperture diameters of a number of through holes 101 on the mesh plate body 10 are 2 - 3 mm, and the hole pitch of the through holes 101 is 5 - 15 mm, facilitating the drainage operation after the operation.

[0030] In this embodiment, as Figure 4 shown, the thickness of the mesh plate body 10 is 2 - 6 mm. Further, the top surface of the mesh plate body 10 is an upwardly convex arc surface, and its opposite bottom surface is a flat surface. Further, a number of tabs 20 are circumferentially distributed along the central axis of the mesh plate body 10.

[0031] The tabs 20 of the mesh plate body 10 are used to connect or bridge different parts of the skull, especially during skull repair or reconstruction surgery. Fix the fragmented or defective parts of the skull, thereby restoring the integrity and stability of the skull. By reducing movement and providing support, the tabs 20 help to accelerate the formation and regeneration of new bone. The design of the tabs 20 is usually flexible and can be customized according to the specific situation of the patient. This enables the surgeon to select a suitable tab 20 to repair the skull according to the size and shape of the defect. For example, the tab 20 is an arc-shaped piece. By using the tab 20 for skull repair, some potential complications such as cerebrospinal fluid leakage, infection, etc. can be reduced. The tab 20 provides better sealing and stability, helping to reduce these risks. The tab 20 can also help to improve the appearance of the patient. When repairing a skull defect, it can make the surface of the repaired skull more flat and smooth, thereby reducing the deformity in appearance.

[0032] In this embodiment, the tab 20 includes a connecting part and a fixing part that are connected to each other. The connecting part is fixed to the top surface of the mesh plate body 10, and a fixing hole 201 is provided in the fixing part. Further, the orifice of the fixing hole 201 facing the top surface of the mesh plate body 10 is provided with an opening, and the width of the opening gradually increases along the direction towards the top surface of the mesh plate body 10. By setting the opening, the tab 20 can be directly fixed to the skull through the fixing hole 201 using fasteners such as screws.

[0033] In this embodiment, the tab 20 and the mesh plate body 10 are integrally formed, and the integral forming method is an additive manufacturing process. Further, the additive manufacturing process is selective laser sintering or fused deposition modeling. Further, the material of the mesh plate body 10 and the tab 20 is one of PEEK material or PEEK composite material. The hardness and elastic modulus of the PEEK material match those of normal bone and do not cause adjacent bone resorption; the PEEK material does not limit the application of postoperative MRI examination for the patient, and there is no artifact interference in postoperative imaging; it has good biocompatibility and will not cause tissue allergic reaction and bone autolysis after long-term implantation in the body; the PEEK material has high hardness and will not be deformed due to bumping after the operation.

[0034] The mesh plate body 10 is made of polyetheretherketone (PEEK) material and can be obtained by 3D printing. The contact surface of the mesh plate body 10 and the autologous skull in the skull thickness direction is the side surface of the flat part 102 of the mesh plate body 10, and the plane fits with the autologous skull. The thickness of the flat part 102 coincides with the thickness of the original defective skull. The thickness of the flat part 102 is 6 mm. The thickness of the flat part 102 is the skull thickness based on the vertical horizontal plane, slightly larger than the thickness of the edge of the original defective skull after grinding, so that the mesh plate body 10 can be easily placed into the defective bone window.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A mastoid approach repair mesh for trigeminal neuralgia, comprising a mesh body, characterized in that: A number of straps extend outward from the edge of the mesh body, the mesh body is provided with through holes, and a number of the straps are provided with fixing holes; the mesh body includes a planar portion with a flat side and an arcuate portion with another arcuate side, the arcuate portion is connected to the planar portion, and the thickness of the mesh body gradually decreases along the direction from the planar portion to the arcuate portion; the mesh body is used to fill the bone window of the skull, and the straps fix the mesh body to the bone window of the skull through the fixing holes.

2. A mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 1, characterized in that: The thickness of the mesh plate body is 2-6 mm.

3. A mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 2, characterized in that: The top surface of the mesh plate body is an upwardly convex arc surface, and the opposite bottom surface is a flat surface.

4. The mastoid approach repair mesh for trigeminal neuralgia according to claim 1, characterized in that: The strap comprises a connecting portion and a fixing portion which are connected to each other, the connecting portion is fixed to the top surface of the mesh plate body, and the fixing hole is arranged in the fixing portion.

5. The mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 4, characterized in that: A plurality of the straps are distributed circumferentially along the central axis of the mesh plate body.

6. The mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 1, characterized in that: An opening is provided at the opening of the fixing hole toward the top surface of the mesh plate body, and the width of the opening gradually increases along the direction toward the top surface of the mesh plate body.

7. The mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 1, characterized in that: The straps and the mesh plate body are integrally formed, and the integral forming method is an additive manufacturing process.

8. The mastoid approach repair mesh for trigeminal neuralgia as claimed in claim 7, characterized in that: The additive manufacturing process is selective laser sintering or fused deposition modeling.

9. The mastoid approach repair mesh for trigeminal neuralgia according to claim 1, characterized in that: The material of the mesh plate body and the strap is a PEEK material or a PEEK composite material.

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