Porous structure
By designing a porous structure combining large pore size and small pore size, the problem of difficulty in taking into account both nutritional delivery and cell adhesion functions in the prior art is solved, and the bone growth effect and structural stability are improved. It is suitable for orthopedic implants Bone grafting chamber replacement.
Patent Information
- Application Number
- CN202321534398.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-15
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-06-15
AI Technical Summary
The existing porous structure cannot take into account the functions of nutrient delivery and cell adhesion, resulting in poor bone growth effect and insufficient structural stability in the bone graft chamber design.
A porous structure is designed, combining large and small pore size lattice cell structures, including a first pore for nutrient transport and waste discharge and a second pore for cell attachment and growth, with the lattice cell structure in The diamond configuration has a polygonal structure and particle surface, with a pore size range of 300-1500μm and 100-300μm, enhancing the stability of the structure and blood supply capacity.
Effective nutrient supply and cell growth of bone growth are achieved, bone fusion area is improved, surgical complexity and infection risk are reduced, and implant stability and blood supply capacity are improved.
Smart Images
Figure CN222150239U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of orthopedics, in particular to a porous structure. Background Art
[0002] After years of development, orthopedic implants have become mature. Traditional orthopedic implants, especially spinal products, are basically equipped with bone grafting chambers. The size of the bone grafting chamber determines the area of early bone ingrowth. If the bone grafting chamber is too large, the contact area between the orthopedic implant and the vertebrae is too small, which is prone to problems such as loosening, collapse, and non-fusion of the orthopedic implant, which in turn brings financial burden to patients.
[0003] The porous structure of conventional porous orthopedic implants is mostly composed of regular lattice arrangements. The regular lattices are mostly polyhedral structures such as regular tetrahedrons and hexahedrons. The bone implant chamber is mostly a hollow area that runs through the center of the orthopedic implant. The porous structure design in the prior art cannot take into account the two functional requirements of nutrient delivery and cell adhesion. These two functional requirements correspond to different pore size ranges. The porous structure of the prior art does not combine the porous structure units that meet the two pore size ranges together to form a full-range bone ingrowth channel.
[0004] In bone grafting surgery, doctors need to extract the patient's own bone or use allogeneic bone grafting materials. Taking autologous bone will cause greater trauma to the patient, and using allogeneic bone will incur additional costs and higher surgical costs. The cancellation of the bone grafting chamber can simplify the surgical process, reduce operation time, reduce the probability of surgical errors, and reduce the risk of intraoperative infection.
[0005] The utility model relates to a porous structure which can replace the design of a bone grafting bin and has a structure combining large pores and small pores with the functions of nutrient transport and cell adhesion. Utility Model Content
[0006] The purpose of the utility model is to provide a porous structure to replace the bone grafting chamber design in the orthopedic implant in the prior art, so as to solve the technical problem that the porous structure cannot take into account both the nutrient transport and cell adhesion functions.
[0007] An embodiment of the utility model is implemented as follows: a porous structure provided by the utility model includes: a lattice unit structure; a plurality of the lattice unit structures are arranged in order; the lattice unit structure has a first channel for nutrient transmission and waste discharge; a second channel is provided on the surface of the lattice unit structure and between any four adjacent lattice unit structures, and the second channel is used for cell attachment and growth.
[0008] Further, the second channel includes a primary channel and a secondary channel;
[0009] The primary pores are located on the surface of the lattice unit structure, and the secondary pores are located between any four adjacent lattice unit structures.
[0010] Furthermore, the pore size of the first channel is in the range of 300-1500 μm; the pore size of the second channel is in the range of 100-300 μm.
[0011] Furthermore, the lattice unit structure is in a diamond configuration.
[0012] Furthermore, the diamond configuration includes a hexadecahedron and a dodecahedron.
[0013] Furthermore, the first channel is a transverse cross-section and a longitudinal cross-section of the lattice unit structure, and the first channel is a polygonal structure.
[0014] Furthermore, the polygonal structure includes quadrilateral, pentagon, hexagon, octagon and decagon structures.
[0015] Furthermore, the primary channel has a polygonal structure.
[0016] Furthermore, the polygonal structure includes a quadrilateral, a pentagon, a hexagon, and an octagon.
[0017] Furthermore, a particle structure is arranged on the surface of the connecting rod structure, and the diameter of the particle structure ranges from 1 to 1000 nanometers.
[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0019] The utility model provides a porous structure, including a lattice unit structure; each lattice unit structure has a first channel for nutrient transmission, waste discharge, and cell attachment and growth; a second channel is arranged on the surface of each lattice unit structure and between any four adjacent lattice unit structures, and the second channel is used for cell attachment and growth; the plurality of lattice unit structures arranged and formed have the ability to maintain bone formation space, and each lattice unit structure is provided with a protruding structure, which is conducive to increasing friction and improving the stability of the porous structure. And the arrangement of the first channel and the second channel can make it have the micro-flow field medium transmission capacity required for blood supply; the first channel and the second channel are more convenient for tissue fluid flow, promote the formation of capillary network inside the lattice unit structure, and provide necessary blood supply and nourishment for bone growth, alleviating the technical problems in the prior art that the bone grafting material used has poor bone growth effect and is difficult to maintain structural stability for a long time under external load. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of the intervertebral fusion device in one embodiment of the utility model;
[0021] Figure 2 This is a front view of the overall structure of the intervertebral fusion device in one embodiment of the utility model;
[0022] Figure 3 It is a schematic top view of the overall structure of the intervertebral fusion device in one embodiment of the utility model;
[0023] Figure 4 Another schematic diagram of the overall structure of the intervertebral fusion device in one embodiment of the utility model;
[0024] The figure numbers in the accompanying drawings are as follows: 1, lattice unit structure; 2, first channel; 3, second channel; 4, primary channel; 5, secondary channel. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] See also Figures 1 to 4 According to the porous structure of the utility model, it includes a lattice unit structure 1; a first pore 2; a second pore 3; a primary pore 4; and a secondary pore 5.
[0027] See also Figures 1 to 4 The porous structure area is composed of a plurality of lattice unit structures 1 arranged in an orderly manner. The lattice unit structure 1 is in a diamond configuration, which includes a hexadecahedron and a dodecahedron. The lattice unit structure 1 is connected by a rod-shaped structure. Each face of the lattice unit structure 1 is provided with a rod-shaped protrusion. This structural design can provide initial stability for the initial implantation of the product, provide a large-aperture channel for the transmission of nutrients and the discharge of waste in the blood, and provide small-aperture channels in multiple directions for the attachment and growth of cells.
[0028] The pore size of the first pore 2 is in the range of 300-1500 μm; the pore size of the second pore 3 is in the range of 100-300 μm;
[0029] The first channel 2 is formed by connecting the connecting rod structure on the surface of the lattice unit structure 1. The first channel 2 is a polygonal structure, which includes quadrilateral, pentagon, hexagon, octagon, and decagonal structures. The structure of the first channel 2 has a large aperture, which can provide a large enough space for blood transportation and nutrient delivery, and also provide sufficient space for the small-aperture primary channel 4, realizing the convex structure design of the primary channel 4.
[0030] The primary channel 4 is in a polygonal structure, and the polygonal structure includes a quadrilateral, a pentagon, a hexagon, and an octagon.
[0031] Beneficial effects of the utility model:
[0032] The utility model proposes a porous structure combining large and small pores, which can replace the traditional bone grafting chamber structure and can also be applied to all major orthopedic fields related to bone integration, such as joints, spine, trauma, sports medicine, etc. The multi-porous structure combining large-pore channels and small-pore channels can simultaneously realize the functions of blood nutrient delivery and cell adhesion growth, achieve good bone ingrowth effect, and effectively increase the bone fusion area.
[0033] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations or combinations are not explicitly described in the present application. In particular, without departing from the spirit and teachings of the present application, the features described in the various embodiments and / or claims of the present application may be combined and / or combined in a variety of ways, and all of these combinations and / or combinations fall within the scope disclosed in the present application.
[0034] The principles and implementation methods of the present invention are described in detail using specific embodiments. The description of the above embodiments is only used to help understand the method and core ideas of the present invention, and is not intended to limit the present application. For those skilled in the art, changes can be made in the specific implementation methods and application scopes based on the ideas, spirits and principles of the present invention, and any modifications, equivalent substitutions, improvements, etc. made by them should be included in the scope of protection of this application.
Claims
1. A porous structure, It is characterized in that include: Lattice unit structure; The lattice unit structure is provided in plurality, and the plurality of lattice unit structures are arranged in order; The surface of the lattice unit structure has a first pore that is convenient for nutrient transmission, waste discharge, and cell attachment and growth; The first channel is formed by connecting the surface connecting rod structure of the lattice unit structure; A second channel is provided on the surface of the lattice unit structure and between any four adjacent lattice unit structures, and the second channel is used for cell attachment and growth; The second pores include a primary pore and a secondary pore; the primary pore is located on the surface of the lattice unit structure, and the secondary pore is located between any four adjacent lattice unit structures; Each face of the lattice unit structure is provided with a rod-shaped protrusion; A particle structure is arranged on the surface of the connecting rod structure, and the diameter of the particle structure ranges from 1 to 1000 nanometers.
2. The porous structure according to claim 1, It is characterized in that The pore size of the first channel is in the range of 300-1500 μm; the pore size of the second channel is in the range of 100-300 μm.
3. The porous structure according to claim 2, It is characterized in that The lattice unit structure is in a diamond configuration.
4. The porous structure according to claim 3, It is characterized in that The diamond configuration includes hexadecahedron and dodecahedron.
5. The porous structure according to claim 3, It is characterized in that The first channel has a polygonal structure.
6. The porous structure according to claim 5, It is characterized in that The polygonal structure includes quadrilateral, pentagon, hexagon, octagon and decagon.
7. The porous structure according to claim 5, It is characterized in that The primary channel has a polygonal structure.
8. The porous structure according to claim 7, It is characterized in that The polygonal structure includes a quadrilateral, a pentagon, a hexagon, and an octagon.