An implant system for guiding bone growth and a method of manufacturing the same

Abstract

The present application relates to a kind of implant systems for guiding bone growth and its preparation method, implant system is arranged in the preformed hole of alveolar bone when using, including: sheath tube and implant;Sheath tube and implant are prepared according to the bone mass condition of alveolar bone, meet the physiological curvature of alveolar bone, with good adaptability.Sheath tube is flexible material, implant is arranged in sheath tube, and sheath tube is deformed by the interference fit of implant and sheath tube, so that sheath tube is extruded to the inner wall of preformed hole along radial direction, provides stable mechanical bonding force for the combination of implant system and alveolar bone in the initial stage of implanting;Flexible sheath tube can provide reliable buffer for alveolar bone, and also increase the contact area between implant system and alveolar bone by deformation, which is conducive to guiding bone growth;Meanwhile, the body of sheath tube and implant is porous structure, and bone is guided to grow into by porous structure, provides stable biological bonding force for the combination of implant system and alveolar bone in the middle and later stages of implanting.

Description

Technical Field

[0001] This invention belongs to the field of implant technology, specifically relating to an implant system that guides bone growth and its preparation method. Background Technology

[0002] Dental implant technology restores missing teeth. Clinically, titanium implants are commonly used, which are made by machining bar material into a dense cylindrical or conical threaded structure. When alveolar bone volume is insufficient or bone density is low, it is difficult to form a stable mechanical bond between the implant and the alveolar bone. This results in the implant failing to provide stable support between the abutment and the alveolar bone, thus affecting tissue healing and leading to implant failure.

[0003] Utility model CN ​​217310646U discloses a dental implant that alternates between threaded and porous structures, creating a one-piece implant through additive manufacturing. The porous structure guides bone growth, allowing bone tissue to adhere to and grow into the porous structure, thus providing biobonding between the implant and the alveolar bone and increasing the implant's stability. However, in the initial implantation stage, this design still relies on the threaded structure to fix the implant to the alveolar bone. When alveolar bone volume is insufficient, it remains difficult to achieve stable integration between the implant and the alveolar bone. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides an implant system for guiding bone growth and a method for its preparation. The technical problem to be solved by this invention is achieved through the following technical solution:

[0005] This invention provides an implant system for guiding bone growth, comprising: a bone growth guiding structure and an implant;

[0006] The bone growth guiding structure includes a sheath; the sheath is made of a flexible material and has a porous structure, the porous structure comprising a plurality of unit cells;

[0007] The sheath is placed in a pre-drilled hole in the alveolar bone during use, and the sheath is press-fitted into the pre-drilled hole.

[0008] The implant is coaxially disposed within the sheath, and the implant and the sheath are press-fitted together.

[0009] The implant includes: an implant neck and an implant body;

[0010] The implant neck and the implant body are coaxially and fixedly connected, and the implant neck and the implant body are arranged from top to bottom inside the sheath; the implant neck is a solid structure, and the implant body is a porous structure.

[0011] In one embodiment of the present invention, the guided bone growth structure further includes: a bone increment scaffold;

[0012] The bone augmentation scaffold is a membrane structure; the first connecting portion of the bone augmentation scaffold is fixedly connected to the sheath, and the second connecting portion of the bone augmentation scaffold extends outward away from the sheath and covers the alveolar bone.

[0013] In one embodiment of the present invention, an alveolar bone cavity is formed between the inner wall of the bone augmentation scaffold and the alveolar bone, and a plurality of bone powder inlets are provided on the bone augmentation scaffold, and the alveolar bone cavity is filled with bone powder.

[0014] In one embodiment of the present invention, the sheath and the bone augmentation scaffold are made of the same material, both of which are bioabsorbable materials;

[0015] The bioabsorbable materials include: collagen, polylactic acid, or polycaprolactone.

[0016] In one embodiment of the present invention, an abutment connection hole is provided axially inside the implant neck, and a neck thread is provided on the outer surface of the implant neck.

[0017] The neck thread is used to guide tissue growth near the neck of the implant.

[0018] In one embodiment of the present invention, the implant body is provided with a through hole along the axial direction, and the through hole communicates with the abutment connection hole;

[0019] The implant body includes several expansion sections;

[0020] The first ends of the plurality of expansion portions are close to the neck of the implant, and the first ends of the plurality of expansion portions are connected in sequence; the second ends of the plurality of expansion portions are separated from each other.

[0021] In one embodiment of the present invention, the unit cell includes: diamond unit, face-centered cubic unit, body-centered cubic unit, or honeycomb unit.

[0022] This invention provides a method for preparing an implant system that guides bone growth, comprising:

[0023] Step 1: Based on the amount of alveolar bone, prepare pre-drilled holes in the alveolar bone and determine the three-dimensional model of the implant system;

[0024] Step 2: Based on the three-dimensional model of the implant system, prepare the bone growth guide structure and the implant;

[0025] Step 3: Insert the guiding bone growth structure and the implant into the pre-drilled hole in sequence, so that the implant and the guiding bone growth structure are interference-fitted to form an implant system.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The bone-guided implant system of the present invention employs a porous sheath made of flexible material. The implant is placed inside the sheath and is pressurized with the sheath, thereby causing the sheath to radially outward compress the inner wall of the pre-drilled hole in the alveolar bone. This provides a stable mechanical bonding force for the implant system to integrate with the alveolar bone in the early stages of implantation. The flexible sheath provides reliable buffering for the alveolar bone and increases the contact area between the implant system and the alveolar bone through deformation, which is beneficial for guiding bone growth. At the same time, both the sheath and the body of the implant are porous structures, which guide bone ingrowth and provide a stable biobonding force for the integration of the implant system with the alveolar bone in the middle and later stages of implantation. The stable integration of the implant with the alveolar bone improves the success rate of implantation.

[0028] 2. The method for preparing the implant system for guiding bone growth of the present invention involves preparing pre-drilled holes in the alveolar bone according to the bone volume, and further preparing a guiding bone growth structure and an implant according to the bone volume and the prepared pre-drilled holes to conform to the physiological curvature of the alveolar bone. The guiding bone growth structure, the implant, and the alveolar bone have good compatibility. The guiding bone growth structure and the implant are sequentially implanted into the pre-drilled holes, so that the implant and the guiding bone growth structure are interference-fitted to form an implant system. The implant and the alveolar bone are stably integrated, which is conducive to the ingrowth of guiding bone and improves the success rate of implantation.

[0029] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0030] Figure 1 This is a structural cross-sectional view of an implant system for guiding bone growth provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a sheath provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of another sheath structure provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of an implant provided in an embodiment of the present invention;

[0034] Figure 5 This is a front view of the structure of an implant provided in an embodiment of the present invention;

[0035] Figure 6 This is a front view of another implant structure provided in an embodiment of the present invention;

[0036] Figure 7 This is a cross-sectional view of another implant structure provided in an embodiment of the present invention;

[0037] Figure 8 This is a flowchart of a method for preparing an implant system that guides bone growth, as provided in an embodiment of the present invention.

[0038] Icons: 1-Guiding bone growth structure; 11-Sheath; 12-Bone augmentation scaffold; 121-Bone powder inlet; 2-Implant; 21-Implant neck; 211-Abutment connection hole; 212-Neck thread; 22-Implant body; 221-Expansion section; 3-Alveolar bone; 4-Alveolar bone cavity. Detailed Implementation

[0039] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following describes in detail, with reference to the accompanying drawings and specific embodiments, a bone-guiding implant system and its preparation method proposed according to the present invention.

[0040] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of specific embodiments in conjunction with the accompanying drawings. Through the description of the specific embodiments, a more in-depth and concrete understanding can be gained of the technical means and effects adopted by the present invention to achieve its intended purpose. However, the accompanying drawings are for reference and illustration only and are not intended to limit the technical solutions of the present invention.

[0041] Example 1

[0042] Please see Figure 1 , Figure 1 This is a structural cross-sectional view of an implant system for guiding bone growth provided in an embodiment of the present invention.

[0043] As shown in the figure, the implant system for guiding bone growth in this embodiment includes: a bone growth guiding structure 1 and an implant 2;

[0044] Among them, the bone growth guiding structure 1 includes: sheath 11, which is a tubular rotating body.

[0045] In this embodiment, a pre-made hole is prepared on the alveolar bone 3 at the implantation site. The sheath 11 is placed in the pre-made hole of the alveolar bone 3 during use, and the implant 2 is coaxially disposed in the sheath 11.

[0046] In this embodiment, the sheath 11 is made of a flexible material, and the implant 2 is pressurized to fit the sheath 11, causing the sheath 11 to undergo elastic deformation and expand outward. The sheath 11 presses the inner wall of the pre-drilled hole radially outward, forming a stable frictional self-locking between the pre-drilled hole in the alveolar bone 3, the sheath 11, and the implant 2. This provides a stable mechanical bonding force for the implant system to integrate with the alveolar bone 3 in the early stages of implantation, which is beneficial for fixing the implant 2 in cases where there is osteoporosis or insufficient bone volume in the alveolar bone 3.

[0047] In an alternative embodiment, the sheath 11 is made of a flexible material, which on the one hand can reserve deformation space for the interference fit between the implant 2 and the sheath 11, and on the other hand, the flexible sheath 11 can provide reliable buffer for the alveolar bone 3, and increase the contact area between the implant system and the alveolar bone 3 through deformation, which is beneficial to guiding bone growth.

[0048] In this embodiment, the sheath 11 has a porous structure, which includes several unit cells.

[0049] In this embodiment, the implant 2 includes: an implant neck 21 and an implant body 22;

[0050] The implant neck 21 and the implant body 22 are coaxially fixedly connected, and the implant neck 21 and the implant body 22 are arranged from top to bottom inside the sheath 11; the implant neck 21 is a solid structure, and the implant body 22 is a porous structure.

[0051] In an optional embodiment, both the sheath 11 and the implant body 22 are porous structures. The porous structure can increase the friction coefficient of the main contact surfaces between the two, further improving the connection stability between the sheath 11 and the implant 2.

[0052] It is worth noting that using a porous structure can also reduce the elastic modulus of the implant system, reduce the impact of stress shielding effect, and improve the degree of osseointegration and implant success rate.

[0053] In one alternative implementation, the cell units of the porous structure include: diamond units, face-centered cubic units, body-centered cubic units, or honeycomb units.

[0054] It is worth noting that preparing pre-drilled holes in the alveolar bone 3 will create a defect area. The native bone near the defect area will grow inward along the direction of the pre-drilled hole diameter, and the growth thickness is generally about 3 mm. The porous structure of the sheath 11 can guide bone growth, allowing bone cells to pass through the sheath 11 and attach to the surface of the implant 2. Similarly, the porous structure of the implant body 22 can also provide attachment sites for bone cell growth, thereby forming a good bone integration interface between the implant 2 and the alveolar bone 3.

[0055] In an optional embodiment, the bone growth guiding structure 1 further includes: a bone increment scaffold 12;

[0056] The bone augmentation scaffold 12 is a membrane structure. The first connecting part of the bone augmentation scaffold 12 is fixedly connected to the sheath 11 as a whole. The second connecting part of the bone augmentation scaffold 12 extends outward away from the sheath 11 and covers the alveolar bone 3.

[0057] In an alternative embodiment, the bone augmentation scaffold 12 is fabricated according to the shape of the upper surface of the alveolar bone 3, conforming to the physiological curvature of the alveolar bone 3.

[0058] In an optional embodiment, an alveolar bone cavity 4 is formed between the inner wall of the bone augmentation scaffold 12 and the alveolar bone 3. A plurality of bone powder inlets 121 are provided on the bone augmentation scaffold 12. Bone powder is filled into the alveolar bone cavity 4 through the plurality of bone powder inlets 121. After the bone powder filling is completed, the plurality of bone powder inlets 121 are covered to isolate the alveolar bone cavity 4 from the external oral environment.

[0059] It is worth noting that the bone augmentation scaffold 12 establishes a biological barrier between the gingival soft tissue and alveolar bone 3, preventing the intrusion of epithelial cells and fibroblasts and ensuring bone regeneration; at the same time, the bone augmentation scaffold 12 can also provide support for alveolar bone 3.

[0060] In an optional embodiment, the sheath 11 and the bone augmentation scaffold 12 are made of the same material, namely, bioabsorbable materials, including collagen, polylactic acid or polycaprolactone, and composite materials formed by combining the above materials. In the middle and late stages of implantation, as bone tissue gradually grows into and stabilizes in the porous structure of the implant 2, the sheath 11 and the bone augmentation scaffold 12 are also gradually absorbed or degraded by the human body.

[0061] In an alternative embodiment, the materials of the sheath 11 and the bone augmentation scaffold 12 can also be non-absorbable materials, including: polytetrafluoroethylene, ultra-high molecular weight polyethylene or polyethylene terephthalate and composite materials formed by combining the above materials. In the case of osteoporosis or insufficient bone volume in the alveolar bone 3, the sheath 11 and the bone augmentation scaffold 12 provide reliable support for the implant 2.

[0062] It is worth noting that the use of bone augmentation scaffold 12 can also reduce the number of gingival openings and reduce the damage to the soft tissue of the gums caused by multiple implantations.

[0063] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a sheath provided in an embodiment of the present invention.

[0064] As shown in the figure, the sheath 11 in this embodiment has a hole inside. The front end of the sheath 11 is a hemisphere, which is adapted to the front end of the implant body 22. Bone cells pass through the sheath 11 and attach to the surface of the implant 2, guiding bone growth, thereby forming a good bone integration interface between the implant 2 and the alveolar bone 3.

[0065] Please see Figure 3 , Figure 3 This is a schematic diagram of another sheath provided in an embodiment of the present invention.

[0066] As shown in the figure, the sheath 11 in this embodiment has a through hole inside, and bone cells pass through the sheath 11 to attach to the surface of the implant 2, guiding bone growth, thereby forming a good bone integration interface between the implant 2 and the alveolar bone 3.

[0067] Please refer to the above. Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of an implant provided in an embodiment of the present invention; Figure 5 This is a structural front view of an implant provided in an embodiment of the present invention.

[0068] As shown in the figure, the implant 2 in this embodiment includes: an implant neck 21 and an implant body 22;

[0069] The implant neck 21 and the implant body 22 are fixedly connected along the central axis; an abutment connection hole 211 is provided axially inside the implant neck 21, and a neck thread 212 is provided on the outer surface of the implant neck 21. The neck thread 212 is used to guide the growth of tissue near the implant neck 21.

[0070] In this embodiment, the implant neck 21 is a solid structure, and the implant body 22 is a porous structure.

[0071] In an optional implementation, the abutment connection hole 211 is used to connect the abutment, and then the crown is connected through the abutment to complete the restoration of this part of the tooth structure (the abutment and crown are not shown in the figure).

[0072] In an alternative embodiment, the neck thread 212 includes a sawtooth thread, a V-shaped thread, or a trapezoidal thread.

[0073] It is worth noting that the neck thread 212, located on the outer surface of the implant neck 21, increases the contact area of ​​the connection interface and guides the growth of soft tissue cells. This facilitates the sealing of the implant 2 margin by gingival cells, accelerates the healing of the soft tissue around the implant 2, and ensures the stability of the implant 2. It also maintains mechanical stress stimulation at the marginal bone level, effectively reducing marginal bone resorption.

[0074] In an optional embodiment, the implant body 22 is provided with a through hole along the axial direction, which communicates with the abutment connection hole 211. A central screw is used to pass through the abutment, the abutment connection hole 211 and the through hole from top to bottom, so that the abutment, the implant 2 and the alveolar bone 3 are connected as one unit.

[0075] In one optional embodiment, the implant body 22 includes a plurality of expansion portions 221; the first ends of the plurality of expansion portions 221 are close to the implant neck 21, and the first ends of the plurality of expansion portions 221 are connected in sequence; the second ends of the plurality of expansion portions 221 are separated from each other.

[0076] In an alternative embodiment, the implant body 22 can be radially cut into three expansion portions 221, or radially cut into four expansion portions 221.

[0077] In an optional embodiment, the second ends of a plurality of expansion portions 221 are separated by a cutting groove, the width of which ranges from 0.1 to 2 mm, and the space formed by the cutting groove allows the plurality of expansion portions 221 to expand outward or contract inward.

[0078] In an alternative embodiment, when the plurality of expansion portions 221 are subjected to an outward compressive force from the internal through-hole, the plurality of expansion portions 221 deform radially outward, thereby compressing the pre-formed holes of the sheath tube 11 and alveolar bone 3 from the inside to form a stable mechanical environment.

[0079] Please refer to the above. Figure 6 and Figure 7 , Figure 6 This is a front view of another implant structure provided in an embodiment of the present invention. Figure 7 This is a cross-sectional view of another implant structure provided in an embodiment of the present invention.

[0080] As shown in the figure, the implant 2 in this embodiment includes: an implant neck 21 and an implant body 22;

[0081] The implant neck 21 and implant body 22 are fixedly connected along the central axis. The implant neck 21 is a solid structure, while the implant body 22 is a porous structure. An abutment connection hole 211 is provided axially inside the implant neck 21. The implant 2 is connected to the abutment through the abutment connection hole 211. The implant body 22 is press-fitted with the sheath 11.

[0082] In an optional embodiment, the abutment connection hole 211 includes a connection cone, a connection groove, and a connection thread, which are arranged sequentially along the axial direction away from the implant body 22.

[0083] In an optional implementation, the connecting cone is a Morse taper cone with the cone direction close to the implant body 22.

[0084] In an alternative implementation, the connection groove includes a square groove or a hexagonal groove for transmitting torque between the implant and the abutment.

[0085] In an alternative implementation, a connecting thread is used to connect to the base.

[0086] The implant system for guiding bone growth provided by this invention employs a porous sheath made of flexible material. The implant is placed inside the sheath and is pressurized with the sheath, causing the sheath to radially outward compress the inner wall of the pre-drilled hole in the alveolar bone. This provides a stable mechanical bonding force for the implant system to integrate with the alveolar bone in the early stages of implantation. The flexible sheath provides reliable buffering for the alveolar bone and increases the contact area between the implant system and the alveolar bone through deformation, which is beneficial for guiding bone growth. At the same time, both the sheath and the body of the implant are porous structures, which guide bone ingrowth and provide a stable biobonding force for the implant system to integrate with the alveolar bone in the middle and later stages of implantation. The stable integration of the implant with the alveolar bone improves the success rate of implantation.

[0087] Example 2

[0088] Please see Figure 8 , Figure 8 This is a flowchart of a method for preparing an implant system that guides bone growth, as provided in an embodiment of the present invention.

[0089] As shown in the figure, the preparation method of the implant system for guiding bone growth in this embodiment includes:

[0090] Step 1: Based on the amount of alveolar bone, prepare pre-drilled holes in the alveolar bone and determine the three-dimensional model of the implant system;

[0091] In an alternative implementation, for cases of osteoporosis or insufficient bone volume in the alveolar bone 3, the structural schemes of the bone growth guide structure 1 and the implant 2 will differ accordingly, thus forming different three-dimensional models, including: using a bone increment scaffold 12 to cover the bone defect area while providing support for the alveolar bone 3; using a radially evenly divided number of expansion portions 221, and using a central screw to expand the number of expansion portions 221 to achieve an interference fit with the pre-drilled hole.

[0092] Step 2: Based on the three-dimensional model of the implant system, prepare the bone growth guide structure and the implant;

[0093] In one alternative embodiment, the guiding bone growth structure 1 is prepared by a fabrication method or an additive manufacturing method, and the implant 2 is prepared by an additive manufacturing method.

[0094] In one optional embodiment, the guide bone growth structure 1 is prepared by a braiding method, including: first, drying the raw material granules in a drying oven, and then extruding the raw material granules into filaments or strips of braided thread; braiding the braided thread according to the determined structure of the sheath 11 and the bone increment scaffold 12; and shaping the bone increment scaffold 12 according to the surface shape of the alveolar bone 3 during the implantation process to complete the preparation of the guide bone growth structure 1.

[0095] Step 3: Insert the guiding bone growth structure and the implant sequentially into the pre-drilled hole, so that the implant and the guiding bone growth structure are interference-fitted to form an implant system.

[0096] In an optional embodiment, for an implant system with a bone augmentation scaffold 12, the preparation of the guiding bone growth structure 1 includes: preparing a sheath 11 and a bone augmentation scaffold 12 respectively, shaping the bone augmentation scaffold 12 according to the surface shape of the alveolar bone 3, and then connecting the sheath 11 and the bone augmentation scaffold 12 into one unit.

[0097] In an optional embodiment, when the guiding bone growth structure 1 is implanted, the bone increment scaffold 12 covers the upper surface of the alveolar bone 3, and bone powder is filled into the alveolar bone cavity 4 through a plurality of bone powder inlets 121. After the bone powder filling is completed, the plurality of bone powder inlets 121 are covered to isolate the alveolar bone cavity 4 from the external oral environment.

[0098] In one optional embodiment, the body of the implant 2 includes three expansion sections 221. First, the sheath 11 is inserted into a pre-drilled hole in the alveolar bone 3. Then, the implant 2 is placed into or gently tapped into the sheath 11. Next, a central screw is used to sequentially pass through the abutment, the abutment connection hole 211, and the through hole of the implant 2 along the axial direction, connecting the abutment, the implant 2, and the alveolar bone 3 into a single unit. As the central screw is tightened and moves downward along the axial direction, the central screw compresses the expansion sections 221 radially outward. At this time, the expansion sections 221 deform radially outward. The deformed expansion sections 221 compress the sheath 11 and the pre-drilled hole in the alveolar bone 3, forming a stable mechanical environment, thus completing the implantation of the bone-guiding implant system.

[0099] It is worth noting that the deformation of the implant 2 itself allows the implant body 22 to be embedded in the alveolar bone 3, and the abutment and crown can be installed in one go without waiting for the recovery period of the implant surgery, achieving immediate stability of the implant.

[0100] In one optional embodiment, the implant 2 has a porous body. The sheath 11 is first inserted into a pre-drilled hole in the alveolar bone 3, and then the implant 2 is placed into or gently tapped into the sheath 11. By adjusting the outer diameter of the implant body 22, an interference fit is achieved between the implant 2 and the sheath 11. By eliminating the threaded structure, the cutting and damage to surrounding structures during implantation is reduced. The traditional threaded mechanical bonding force is converted into the bio-bonding force between the porous structure and bone tissue, enhancing the stability of the implantation process in the mid-to-late stages and reducing the probability of implantation failure. In the initial stage of implantation, the system combining the sheath 11 and the implant 2 provides sufficient mechanical bonding force to achieve immediate implantation.

[0101] In one alternative implementation, after conventional implant placement, adverse reactions often occur at the implantation site, leading to implant 2 loosening. In this case, a secondary surgery using sheath 11 is required. First, the original implant is removed, sheath 11 is inserted into the original implant's cavity, and then implant 2 is inserted; this is a secondary repair and reinforcement. The original implant loosening is due to relatively poor alveolar bone quality. After the original implant was placed, during the recovery phase, poor oral hygiene habits and poor implantation quality led to loosening of the original implant. By secondarily inserting sheath 11 to form an implant system that guides bone growth, the shear stress of the threaded structure on the alveolar bone 3 can be reduced. The threaded locking structure is changed to an interference fit structure of implant 2, sheath 11, and alveolar bone 3, resulting in more uniform internal stress and a stable load-bearing environment.

[0102] The present invention provides a method for preparing a bone-guided implant system. A pre-drilled hole is prepared in the alveolar bone according to the bone volume. A bone-guided growth structure and an implant are then prepared based on the bone volume and the pre-drilled hole to conform to the physiological curvature of the alveolar bone. The bone-guided growth structure, implant, and alveolar bone have good compatibility. The bone-guided growth structure and implant are sequentially implanted into the pre-drilled hole, allowing the implant and bone-guided growth structure to fit together to form an implant system. The implant and alveolar bone are stably integrated, which facilitates bone ingrowth and improves the implant success rate.

[0103] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not expressly listed. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device comprising said element. Terms such as "connected" or "linked" are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect. The orientations or positional relationships indicated by terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0104] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An implant system for guiding bone growth, characterized in that, include: Guide bone growth structures (1) and implants (2); The bone growth guiding structure (1) includes a sheath (11); the sheath (11) is made of a flexible material and has a porous structure, which includes a number of unit cells. The sheath (11) is placed in a pre-drilled hole in the alveolar bone (3) during use, and the sheath (11) is press-fitted with the pre-drilled hole; The implant (2) is coaxially disposed inside the sheath (11), and the implant (2) and the sheath (11) are press-fitted together. The implant (2) includes: an implant neck (21) and an implant body (22); The implant neck (21) and the implant body (22) are coaxially fixedly connected, and the implant neck (21) and the implant body (22) are arranged from top to bottom inside the sheath (11); the implant neck (21) is a solid structure, and the implant body (22) is a porous structure. The bone growth guiding structure (1) further includes: a bone growth scaffold (12); the bone growth scaffold (12) is a membrane structure; the first connecting part of the bone growth scaffold (12) is fixedly connected to the sheath (11), the second connecting part of the bone growth scaffold (12) extends outward away from the sheath (11) and covers the alveolar bone (3); an alveolar bone cavity (4) is formed between the inner wall of the bone growth scaffold (12) and the alveolar bone (3), and a plurality of bone powder inlets (121) are provided on the bone growth scaffold (12), and the alveolar bone cavity (4) is filled with bone powder.

2. The implant system for guiding bone growth according to claim 1, characterized in that, The sheath (11) and the bone augmentation scaffold (12) are made of the same material, both of which are bioabsorbable materials; The bioabsorbable materials include: collagen, polylactic acid, or polycaprolactone.

3. The implant system for guiding bone growth according to claim 1, characterized in that, The implant neck (21) is provided with an abutment connection hole (211) along the axial direction, and the outer surface of the implant neck (21) is provided with a neck thread (212). The neck thread (212) is used to guide tissue growth near the implant neck (21).

4. The implant system for guiding bone growth according to claim 3, characterized in that, The implant body (22) is provided with a through hole along the axial direction, and the through hole is connected to the abutment connection hole (211); The implant body (22) includes several expansion portions (221); The first ends of the plurality of expansion portions (221) are close to the neck (21) of the implant, and the first ends of the plurality of expansion portions (221) are connected in sequence; the second ends of the plurality of expansion portions (221) are separated from each other.

5. The implant system for guiding bone growth according to claim 1, characterized in that, The unit cells include: diamond units, face-centered cubic units, body-centered cubic units, or honeycomb units.

6. A method for preparing a bone-guided implant system, applicable to the bone-guided implant system according to any one of claims 1 to 5, characterized in that, include: Step 1: Based on the amount of alveolar bone, prepare pre-drilled holes in the alveolar bone and determine the three-dimensional model of the implant system; Step 2: Based on the three-dimensional model of the implant system, prepare the bone growth guide structure and the implant; Step 3: Insert the guiding bone growth structure and the implant into the pre-drilled hole in sequence, so that the implant and the guiding bone growth structure are interference-fitted to form an implant system.

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