A flow guide groove structure of a skull repair mesh
By setting a drainage channel on the back of the cranioplasty mesh, a continuous drainage channel is formed, which solves the problems of postoperative epidural effusion and decreased mechanical properties, achieves effective drainage and tissue integration, and improves the repair effect.
Patent Information
- Application Number
- CN202520520663.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-06-12
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing cranioplasty materials cause postoperative epidural effusion, increasing porosity and affecting mechanical properties.
A drainage channel structure is set on the back of the cranioplasty mesh, with drainage holes connected to both ends of the drainage channel. The design can be linear, cross-shaped, circumferential, or mixed to form a continuous drainage channel. The depth of the drainage channel is 1/6 to 1/3 of the mesh thickness, and the width is 1mm to 3mm.
It effectively prevents epidural fluid accumulation, maintains the mechanical support function of the mesh, promotes tissue integration, and improves repair results.
Smart Images
Figure CN224345043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a guide channel structure for a cranial repair mesh plate. Background Technology
[0002] Skull defects are a common sequela of traumatic brain injury and neurosurgical procedures, especially in severe cases where cranioplasty is often required. Currently, cranioplasty commonly uses polymeric materials such as polyetheretherketone (PEEK) and ultra-high molecular weight polyethylene (UHMWPE). These materials possess good biocompatibility and mechanical properties; however, their smooth surfaces and difficulty in tissue ingrowth into the mesh can easily lead to postoperative epidural effusion, affecting patient recovery and postoperative outcomes. While existing techniques attempt to improve this by increasing porosity, this increases the mechanical properties of the mesh, reducing its support and thus failing to effectively address the epidural effusion problem. Therefore, this invention proposes a drainage groove structure on the back of the cranioplasty mesh to effectively solve the epidural effusion problem without compromising the mesh's mechanical support function. Utility Model Content
[0003] The purpose of this invention is to address the drawback of repair materials used in cranioplasty that easily lead to postoperative epidural effusion, requiring a second craniotomy. To address the issue of increasing porosity to reduce epidural effusion, but which compromises the mechanical stability of the mesh after increased porosity, this invention proposes a drainage channel structure for a cranioplasty mesh that effectively prevents epidural effusion without compromising the mesh's mechanical support function.
[0004] To address the problems existing in the prior art, a drainage channel structure for a cranioplasty mesh plate is disclosed. The drainage channel is disposed on the back of the mesh plate, and the mesh plate is provided with drainage tube holes. A drainage hole is connected to each end of the drainage channel. The depth of the drainage channel is 1 / 6 to 1 / 3 of the thickness of the mesh plate, and the width of the drainage channel is 1 mm to 3 mm. The shape of the drainage channel can be linear, cross-shaped, circumferential, or mixed.
[0005] In one embodiment, the linear guide channel structure is composed of alternating transverse and longitudinal guide channels, with the transverse guide channels parallel to each other and the longitudinal guide channels parallel to each other, and the transverse and longitudinal guide channels are staggered to form a grid-like flow channel.
[0006] Furthermore, the length of the guide channel in the linear guide channel structure is 5mm to 130mm.
[0007] In another embodiment, the cross-shaped guide channel structure consists of oblique straight lines that intersect each other, and the guide channels in the same direction are parallel to each other.
[0008] Furthermore, the length of the guide channel in the cross-shaped guide channel structure is 10mm to 150mm.
[0009] Furthermore, the drainage holes in each row of the linear guide channel structure and the cross-shaped guide channel structure are interconnected through the guide channels, and each guide channel forms an intersection point with the adjacent guide channels in different directions.
[0010] In another embodiment, the surrounding guide channel structure is an irregular circle shape, the guide channel is arc-shaped, and the two ends of the multiple guide channels and the multiple adjacent drainage holes are connected to form multiple ring structures. The multiple ring structures gradually increase in size from the inside to the outside, forming a ring-shaped drainage path that expands layer by layer from the inside to the outside.
[0011] In another embodiment, the hybrid guide channel structure is composed of alternating linear, intersecting, and circumferential guide channels.
[0012] Furthermore, in the hybrid flow channel structure arrangement, the linear flow channels are arranged along the longitudinal or transverse direction of the mesh plate, the cross-shaped flow channels are arranged diagonally on the mesh plate, and the circumferential flow channels are distributed in a ring shape along the edge or near the edge of the mesh plate. The three types of flow channels are interconnected to form a continuous flow channel network.
[0013] Furthermore, the guide channel is a groove, the edge of the guide channel forms a tiny protrusion on the mesh plate, and the hollow part of the guide channel forms a depression on the mesh plate.
[0014] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: (1) By forming a continuous drainage channel network, the drainage channel allows the fluid to flow out quickly and effectively from the surface of the mesh plate, preventing the fluid from stagnating and accumulating on the surface of the mesh plate, thereby reducing the formation of effusion; (2) By setting drainage channel structures of different shapes, the optimal drainage effect can be provided according to the specific condition of the patient, reducing effusion and improving the repair effect; (3) The drainage channel structure opens a channel on the back of the mesh plate instead of completely penetrating the mesh plate, so that the drainage channel can effectively drain while maintaining the overall structural strength and rigidity of the mesh plate. The overall support of the mesh plate is provided by the mesh structure of the mesh plate, while the arrangement of the drainage channel only forms a fluid channel on the surface and does not change the mechanical support of the mesh plate; (4) By designing the drainage channel as a groove, the roughness of the mesh plate surface is increased, and the drainage channel can promote the close combination of tissue and mesh plate, thereby reducing the occurrence of epidural effusion. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of the overall structure of another embodiment of the present utility model;
[0019] Figure 4 This is a schematic diagram of the overall structure of another embodiment of the present utility model;
[0020] Figure 5 This is a structural schematic diagram from another angle of an embodiment of the present invention;
[0021] In the diagram: 1-Guide channel, 2-Mesh plate, 3-Drainage pipe hole, 4-Drainage hole. Detailed Implementation
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0023] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the terms "upper," "inner," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein.
[0024] To address the problems existing in the prior art, this application provides a guide channel structure for a cranioplasty mesh plate. Specifically, as shown... Figures 1-4 As shown, the drainage channel 1 of the cranioplasty mesh is set on the back of the mesh 2. The mesh 2 is provided with drainage tube holes 3. Drainage holes 4 are connected to both ends of the drainage channel 1. The depth of the drainage channel 1 is 1 / 6 to 1 / 3 of the thickness of the mesh 2. The width of the drainage channel 1 is 1mm to 3mm. The shape of the drainage channel 1 is linear, cross-shaped, circumferential, and mixed.
[0025] Understandably, on the one hand, the drainage channel 1, by forming a continuous drainage channel network, allows fluid to flow out quickly and effectively from the surface of the mesh plate, preventing liquid from stagnating and accumulating on the mesh plate surface, thereby reducing the formation of effusion. On the other hand, by setting drainage channel structures of different shapes, the optimal drainage effect can be provided according to the patient's specific condition, reducing effusion and improving the repair effect. In addition, the depth and width of the drainage channel 1 are precisely designed to allow the liquid to flow smoothly along the drainage channel 1. The drainage channel structure, by opening channels on the back of the mesh plate 2 rather than completely penetrating the mesh plate 2, allows the drainage channel 1 to effectively drain while maintaining the overall structural strength and rigidity of the mesh plate 2. Moreover, the overall support of the mesh plate 2 is provided by the mesh structure of the mesh plate 2, while the arrangement of the drainage channel 1 only forms fluid channels on the surface and does not change the mechanical support of the mesh plate 2.
[0026] In one embodiment, such as Figure 1 As shown, the linear guide channel structure consists of alternating transverse and longitudinal guide channels. The transverse guide channels are parallel to each other, and the longitudinal guide channels are parallel to each other. The transverse and longitudinal guide channels are staggered to form a grid-like flow channel. The length of guide channel 1 is 5mm to 130mm.
[0027] Preferably, the transverse and longitudinal drainage channels are arranged in an alternating grid structure, which effectively guides the liquid to flow in multiple directions, preventing stagnation or accumulation. This alternating arrangement ensures that the fluid is evenly distributed and flows smoothly on the surface of the grid plate 2, thereby effectively draining the fluid and preventing the formation of accumulated liquid. In addition, since the length and layout of the drainage channels 1 are adjustable (length range from 5mm to 130mm), this design can adjust the drainage efficiency according to the specific needs of the patient and adapt to different fluid flow requirements. Shorter drainage channels 1 are suitable for fast-flowing liquids, while longer drainage channels 1 can effectively control the flow of larger volumes of liquid.
[0028] In another embodiment, such as Figure 2 As shown, the cross-type guide channel structure consists of oblique straight lines that intersect each other, and the guide channels in the same direction are parallel to each other. The length of guide channel 1 is 10mm to 150mm.
[0029] Furthermore, the cross-shaped design of the cross-type drainage channel can effectively prevent fluid from flowing in one direction and causing fluid accumulation, because the fluid is guided in multiple directions when flowing in the drainage channel 1, thereby avoiding the formation of local fluid accumulation. This design is especially suitable for surgical areas that require fine drainage and can significantly reduce the risk of postoperative fluid accumulation or epidural effusion.
[0030] Furthermore, in the linear guide channel structure and the cross-type guide channel structure, each row of the flow holes 4 are interconnected through the guide channel 1, and each guide channel 1 forms an intersection point with the guide channels 1 in different directions and adjacent to each other.
[0031] In yet another embodiment, such as Figure 3 As shown, the surrounding guide channel structure is an irregular circle shape. The guide channel 1 is arc-shaped. Multiple guide channels 1 are connected at both ends and multiple adjacent drainage holes 4 to form multiple ring structures. The multiple ring structures gradually increase in size from the inside to the outside, forming a ring drainage path that expands layer by layer from the inside to the outside.
[0032] Preferably, the circumferential drainage channel effectively distributes the liquid flow path through its gradually expanding design from the inside to the outside. Each annular structure expands layer by layer to form multiple drainage paths, ensuring that the liquid flows evenly and drains smoothly on the surface of the mesh plate 2. This uniform distribution avoids concentrated accumulation of liquid, reduces local stagnation and fluid accumulation on the outer mold, and can adapt to different intracranial pressure conditions. When the intracranial pressure is high, the smaller inner drainage channel 1 can effectively guide the liquid, while the larger outer drainage channel 1 provides more fluid channels, enhancing the drainage effect.
[0033] In yet another embodiment, such as Figure 4 As shown, the hybrid guide channel structure consists of alternating linear, intersecting, and circumferential guide channels. The linear guide channels are arranged longitudinally or laterally along the mesh plate 2, the intersecting guide channels are arranged diagonally on the mesh plate 2, and the circumferential guide channels are distributed in a ring shape along the edge or near the edge of the mesh plate 2. The three types of guide channels 1 are interconnected to form a continuous flow channel network.
[0034] Preferably, due to the alternating arrangement of the three types of drainage channel shapes in different areas, the hybrid drainage channel structure can adapt to the needs of different fluid flows. For example, linear drainage channels are suitable for handling stable, uniformly flowing fluids, cross-shaped drainage channels are suitable for dispersing fluids, and circumferential drainage channels can handle larger volumes of fluid flow. The combination of the three provides multi-level, multi-directional drainage channels, ensuring that the fluid can flow smoothly and drain quickly. In addition, this design allows the mesh plate to adapt to the intracranial pressure and drainage needs of different patients, improving clinical adaptability.
[0035] Furthermore, such as Figures 1-4As shown, the guide channel 1 is a groove design, and the edge of the guide channel 1 forms tiny protrusions on the mesh plate 2. The hollow part of the guide channel 1 forms a depression on the mesh plate 2. Because the edge of the guide channel 1 forms tiny protrusions, these protrusions can increase the surface roughness of the mesh plate 2, promote the bonding between the mesh plate 2 and the tissue, promote healing and improve the repair effect.
[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A drainage channel structure for a cranial repair mesh plate, characterized in that, The flow guide groove (1) is set on the back of the mesh plate (2). The mesh plate (2) is provided with a flow guide hole (3). A flow guide hole (4) is connected to each end of the flow guide groove (1). The depth of the flow guide groove (1) is 1 / 6 to 1 / 3 of the thickness of the mesh plate (2). The width of the flow guide groove (1) is 1mm to 3mm. The shape of the flow guide groove (1) is linear, cross-shaped, circumferential, or mixed.
2. The drainage channel structure of the cranioplasty mesh plate according to claim 1, characterized in that, The linear guide channel structure consists of alternating transverse and longitudinal guide channels. The transverse guide channels are parallel to each other, and the longitudinal guide channels are parallel to each other. The transverse and longitudinal guide channels are staggered to form a grid-like flow channel.
3. The drainage channel structure of the cranioplasty mesh plate according to claim 2, characterized in that, The length of the guide channel (1) of the linear guide channel structure is 5mm~130mm.
4. The drainage channel structure of the cranioplasty mesh plate according to claim 1, characterized in that: The cross-shaped guide channel structure consists of oblique straight lines that intersect each other, and the guide channels (1) in the same direction are parallel to each other.
5. The drainage channel structure of the cranioplasty mesh plate according to claim 4, characterized in that, The length of the guide channel (1) of the cross-type guide channel structure is 10mm~150mm.
6. The drainage channel structure of the cranioplasty mesh plate according to claim 1, characterized in that, The flow holes (4) in each row of the linear flow channel structure and the cross flow channel structure are connected to each other through the flow channel (1), and each flow channel (1) forms an intersection point with the flow channels (1) in different directions and adjacent to each other.
7. The drainage channel structure of the cranioplasty mesh plate according to claim 1 or 3, characterized in that: The surrounding guide channel structure is circular in shape, and the guide channel (1) is arc-shaped. The two ends of each guide channel (1) are connected to the adjacent drainage hole (4) to form a ring structure. Multiple ring structures gradually increase in size from the inside to the outside, forming a ring-shaped drainage path that expands layer by layer from the inside to the outside.
8. The drainage channel structure of the cranioplasty mesh plate according to claim 1, characterized in that, The hybrid guide channel structure consists of alternating linear, intersecting, and circumferential guide channels.
9. The drainage channel structure of the cranioplasty mesh plate according to claim 7, characterized in that, In the hybrid flow channel structure arrangement, the linear flow channels are arranged along the longitudinal or transverse direction of the mesh plate (2), the cross-shaped flow channels are arranged diagonally on the mesh plate (2), and the circumferential flow channels are distributed in a ring shape along the edge or near the edge area of the mesh plate (2). The three types of flow channels (1) are connected to each other to form a continuous flow channel network.
10. The drainage channel structure of the cranioplasty mesh plate according to claim 1, characterized in that, The guide groove (1) is a groove design, the edge of the guide groove (1) forms a small protrusion on the mesh plate (2), and the hollow part of the guide groove (1) forms a depression on the mesh plate (2).