WO2022206820A1

WO2022206820A1 - Trabecular bone bionic member and implant

Info

Publication number: WO2022206820A1
Application number: PCT/CN2022/083993
Authority: WO
Inventors: 岳术俊; 史春生; 陈江平; 史春宝; 许奎雪
Original assignee: 北京市春立正达医疗器械股份有限公司; 邢台市琅泰本元医疗器械有限公司
Priority date: 2021-04-01
Filing date: 2022-03-30
Publication date: 2022-10-06
Also published as: CN113081337A

Abstract

A trabecular bone bionic member and an implant, which relate to the technical field of medical devices. The trabecular bone bionic member comprises a trabecular bone bionic body (120) and a mesh protective housing (110). The mesh protective housing (110) is a cylindrical structure, a hollow hole is formed inside of the cylinder of the mesh protective housing (110), and an outer cylinder wall of the mesh protective housing (110) is provided with first outer threads (112); and an accommodating cavity is formed inside of the mesh protective housing (110), and the trabecular bone bionic body (120) is accommodated in the accommodating cavity. The implant comprises a connector (200) and a trabecular bone bionic member; and the connector (200) comprises, along the length direction thereof, a first connecting body (210) and a second connecting body (220), the second connecting body (220) extending into the hollow hole of the trabecular bone bionic member and being connected to the trabecular bone bionic member. The mesh protective housing (110) of the trabecular bone bionic member can have a wrapping and supporting effect on the trabecular bone bionic body (120), thereby reducing the impact, during implantation, of a fracture of the trabecular bone bionic member on implantation and complications caused thereby. In addition, the mesh protective housing (110) can be connected to bone tissue, which can effectively increase the effective bone bonding length of the trabecular bone bionic member.

Description

Trabecular bone bionic parts and implants

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Chinese Application No. 202110353972.9 filed on April 1, 2021. Said application number 202110353972.9 is hereby incorporated by reference in its entirety.

technical field

The invention relates to the technical field of medical devices, in particular to a trabecular bone bionic part and an implant.

Background technique

Oral craniomaxillofacial implant technology is to implant implants with good biocompatibility with the human body into the jawbone of the edentulous part of the human body or the bone tissue of the craniofacial defect through surgery, as an artificial tooth root or craniofacial prosthesis. It is a technique for repairing oral dental and craniofacial defects. At present, the advanced bone fusion implant system is not only used for implant denture repair, but also as a fixation device for repairing defects. Prosthesis and retention of hearing aids solve some problems in the repair of oral craniomaxillofacial defects caused by trauma and tumors.

In order to improve the osseointegration of the implant with the bone tissue after implantation, the existing implant generally includes a trabecular bone bionic segment imitating the structure of the human trabecular bone. However, there are many sharp fractures on the surface of the trabecular bone bionic segment. Therefore, the existing implants generally set a connecting segment at the bottom of the trabecular bone bionic segment to connect with the bone tissue, which leads to the implantation of the implant. The effective osseointegration length with bone tissue after implantation is short, and the bionic segment of trabecular bone is easily broken during implantation, which affects the implantation and even causes other complications.

SUMMARY OF THE INVENTION

The objects of the present invention include providing a trabecular bone bionic part and an implant, so as to solve the problem that the trabecular bone bionic segment in the existing implant is easily broken, which affects the implantation of the implant and even causes other complications. The technical problem of short effective osseointegration length after implantation.

In order to solve the above problems, the present invention provides a trabecular bone biomimetic component, which includes a trabecular bone bionic body and a net-shaped protective shell, wherein the net-shaped protective shell is a cylindrical structure, and the cylinder of the net-shaped protective shell is hollow A hole is formed on the outer cylinder wall of the mesh-shaped protective shell, and a first external thread is provided on the outer cylinder wall of the mesh-shaped protective shell; an accommodating cavity is formed in the hollow of the mesh-shaped protective shell, and the trabecular bone bionic body is accommodated in the accommodating cavity.

Optionally, the outer cylinder wall corresponding to the reticulated protective shell and the first external thread includes a crest mesh and a flank mesh, and the crest mesh extends along the crest of the first external thread. , the flank mesh is connected between the crest mesh and the tooth bottom corresponding to the first external thread, and the flank mesh located on the first side of the crest mesh forms a first side mesh The flank mesh on the second side of the crest mesh forms a second side mesh surface.

Optionally, the outer cylinder wall corresponding to the reticulated protective shell and the first external thread further includes a bottom mesh wire extending along the tooth bottom of the first external thread, and the flank mesh wire is connected to the between the tooth crest mesh and the tooth bottom mesh corresponding to the first external thread.

Optionally, the trabecular bone bionic component further includes a tubular reinforcing body, and the reinforcing body is located in the accommodating cavity and sleeved on the inner cylinder of the mesh protective shell.

Optionally, the top pipe section of the reinforcement body is surrounded by a spiral body; the accommodating cavity includes a reinforcement cavity and a bionic cavity from top to bottom, the spiral part is matched and embedded in the reinforcement cavity, and the trabecular bone is bionic. The body is filled in the bionic cavity.

Optionally, the reticulated protective shell includes a connecting section and a guide section from top to bottom, the first external thread is located on the outer cylinder wall of the connecting section, and the outer cylinder wall of the guide section is from top to bottom. Constricted.

Optionally, the bottom pipe section of the reinforced body extends into the corresponding cavity of the guide section, the inner wall of the bottom pipe section is provided with an internal thread, and the internal thread protrudes from the hollow hole for connecting with the implant. connector connection.

The present invention also provides an implant, comprising a connector and the above-mentioned trabecular bone bionic component, the connector includes a first connector and a second connector along its length direction, and the second connector extends into the The hollow hole of the trabecular bone bionic part is connected with the trabecular bone bionic part.

Optionally, the outer contour of the side wall of the second connecting body is consistent with the outer contour of the side wall of the mesh protective shell of the trabecular bone bionic component provided with a section of the first external thread.

Optionally, the outer wall of the first connecting body is provided with a second external thread, the lead of the first external thread is equal to that of the second external thread, and the pitch of the first external thread is the same as that of the second external thread. N times the pitch of the external thread, where N is an integer greater than 1.

In the trabecular bone biomimetic part and the implant provided by the present invention, on the one hand, a mesh protective shell is used as a protection and supporting structure to cover the outside of the trabecular bone bionic body, and the extended end of the trabecular bone bionic body is connected to the mesh protection. The inner wall of the housing accommodating cavity is connected, or is located in the accommodating cavity of the reticulated protective shell. The outer wall of the reticulated protective shell has high smoothness and uniformity, and the corresponding strength is large, and the probability of fracture under force is also small, so The impact of fracture of the trabecular bone bionic body on implantation and the occurrence of complications during the implantation of the trabecular bone bionic body are reduced, and the implantation success rate and implantation safety of the implant are correspondingly improved. On the other hand, the mesh-like protective shell is covered on the outside of the trabecular bone bionic body in a net-like shape, and the setting of the mesh-like protective shell does not increase the length of the entire trabecular bone bionic body. An external thread, the trabecular bone bionic component is connected to the bone tissue through the first external thread, and when the depth of the threaded hole in the bone tissue is constant, the trabecular bone bionic component of the present application can be osseointegrated with the bone tissue as a whole , that is, the effective osseointegration with the bone tissue is longer, correspondingly improving the firmness of the osseointegration between the implant and the bone tissue, and reducing the occurrence of implant loosening or even falling off in the later stage.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

Fig. 1 is the schematic diagram of the implant provided by the present invention;

Fig. 2 is the schematic diagram of the connector in the implant of Fig. 1;

3 is a schematic diagram of a trabecular bone bionic part provided by the present invention;

FIG. 4 is an exploded view of the trabecular bone bionic component in FIG. 3 .

Description of reference numbers:

100-trabecular bone bionic part; 110-mesh protective shell; 111-connecting segment; 112-first external thread; 112a-top mesh; 112b-bottom mesh; 112c-side mesh; 112e-second side mesh surface; 113-guide segment; 114-hollow hole; 120-trabecular bone biomimetic body; 130-reinforced body; 131-spiral body; 200-connector; 210-first connecting body; 211-second external thread; 220-second connecting body; 221-third external thread.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

This embodiment provides a trabecular bone bionic body 100, as shown in FIG. 3 and FIG. 4, including a trabecular bone bionic body 120 and a net-shaped protective shell 110, the net-shaped protective shell 110 is a cylindrical structure, and the net-shaped protective shell A hollow hole 114 is formed in the cylinder of 110, and a first external thread 112 is provided on the outer cylinder wall of the mesh protective shell 110; cavity.

This embodiment also provides an implant, as shown in FIGS. 1 to 3 , comprising a connector 200 and the above-mentioned trabecular bone bionic component 100 , and the connector 200 includes a first connector 210 and a second connector along its length direction 220 , the second connecting body 220 extends into the hollow hole 114 of the trabecular bone bionic part 100 and is connected with the trabecular bone bionic part 100 .

In the trabecular bone biomimetic part 100 and the implant provided in this embodiment, the trabecular bone bionic part 100 includes a trabecular bone biomimetic body 120 for biomimetic human bone trabecular structure to ensure the firmness of the growth and fusion of bone tissue and its growth and fusion. Covering the outside of the trabecular bone bionic body 120 to protect it to improve the strength of the entire trabecular bone bionic body 100, and used for the mesh protection shell 110 connected to the implantation site of the human body; wherein, the implant includes the above-mentioned used for implantation in the human body. The trabecular bone biomimetic piece 100 at the implantation site and the connecting piece 200 for connecting the prosthesis.

In use, the second connecting body 220 of the connecting piece 200 is inserted into the hollow hole 114 of the trabecular bone bionic piece 100 and connected with it to form an implant, and the first external thread 112 is opened at the bone tissue of the implanted part of the human body to match Then screw the trabecular bone bionic component 100 into the threaded hole, that is, the mesh protective shell 110 is threadedly connected to the bone tissue through the first external thread 112, so as to complete the preliminary connection between the implant and the bone tissue; a period of time After that, the bone tissue can grow into the pores in the trabecular bone bionic body 120 through the gap of the mesh protective shell 110, so as to be integrated with the mesh protective shell 110 and the trabecular bone bionic body 120, so as to realize the realization of bone tissue and trabecular bone bionic body 120. The good and stable osseointegration of the bionic component 100 correspondingly improves the long-term stability of the implant after implantation, and reduces the occurrence of the patient's need for multiple repairs or even secondary implantation due to the loosening of the implant in the later stage; the connector 200 itself includes the abutment or Then, an abutment is installed on the top of the connector 200, and after the soft tissue is healed, a prosthesis such as a dental crown is installed on the abutment, so as to complete the implant restoration. Specifically, the implant can be implanted in the oral cavity, zygomatic bone, mastoid, and periorbital to complete the retention of maxillofacial prostheses (false faces) such as teeth, artificial jaws, artificial ears, artificial eyes, and hearing aids to solve the problem of Oral craniomaxillofacial defect repair.

The trabecular bone bionic body 120 in the trabecular bone bionic part 100 is modeled on the irregular three-dimensional network structure of human trabecular bone tissue in the shape of a loofah (the lines in FIG. 4 are for illustration only, and the trabecular bone bionic body is not limited to 120 mesh distribution), on the one hand, the mesh protection shell 110 is used as a protection and support structure to cover the outside of the trabecular bone bionic body 120, and the extended end of the outer side of the trabecular bone biomimetic body 120 is accommodated with the mesh protection shell 110. The inner wall of the housing cavity is connected, or is located in the housing cavity of the reticulated protective shell 110. The outer wall of the reticulated protective shell 110 has high smoothness and uniformity, and the corresponding strength is large, and the probability of breaking under force is also small, so The impact of the fracture of the trabecular bone bionic body 120 on the implantation and the occurrence of complications during the implantation of the trabecular bone bionic body 100 are reduced, and the implantation success rate and the implantation safety of the implant are correspondingly improved. On the other hand, the mesh-shaped protective shell 110 is covered on the outside of the trabecular bone bionic body 120 in a mesh-like shape. The installation of the mesh-shaped protective shell 110 does not increase the length of the entire trabecular bone bionic body 100 much. The outer wall of the 110 is provided with a first external thread 112, and the trabecular bone bionic component 100 is connected to the bone tissue through the first external thread 112. When the depth of the threaded hole in the bone tissue is constant, the trabecular bone bionic component of the present application is The 100 can be osseointegrated with the bone tissue as a whole, that is, the effective osseointegration with the bone tissue is longer, correspondingly improving the osseointegration firmness of the implant and the bone tissue, and reducing the occurrence of the implant loosening or even falling off in the later stage.

Specifically, both the connector 200 and the trabecular bone bionic part 100 can be made of Ti6Al4V material, and the mesh protective shell 110 and the trabecular bone bionic body 120 of the trabecular bone bionic part 100 can be integrally printed and formed by additive manufacturing technology , thereby improving the bonding firmness and processing convenience of the mesh protective shell 110 and the trabecular bone biomimetic body 120 , and the processing process does not require the introduction of processing aids to construct a porous structure, and the generated trabecular bone biomimetic body 100 has no residue of additives.

Optionally, in this embodiment, as shown in FIG. 4 , the outer cylinder wall of the mesh protection shell 110 corresponding to the first external thread 112 may include a crest mesh 112a and a flank mesh 112c, and the crest mesh 112a Extending along the crest of the first external thread 112, the flank mesh 112c is connected between the corresponding crest mesh 112a and the tooth bottom of the first external thread 112, and is located on the flank mesh on the first side of the crest mesh 112a The wire 112c forms a first side mesh 112d, and the flank mesh 112c on the second side of the crest mesh 112a forms a second side mesh 112e. Here is a specific form of a section of the outer cylinder wall where the first external thread 112 is provided on the mesh protective shell 110. The two sides of the crest mesh 112a are respectively the flank mesh 112c connected between the tooth bottom and the crest mesh 112a, and the flank mesh 112c is formed on both sides of the crest mesh 112a. The first side meshes respectively The surface 112d and the second side mesh surface 112e are used as the two side walls of the first external thread 112, so the outer surfaces of the tooth top mesh 112a, the first side mesh surface 112d and the second side mesh surface 112e are all smooth transitions. There is no sharp break point, so as to ensure the overall strength and overall smoothness of the first external thread 112 and the mesh-shaped protective shell 110, and accordingly ensure that the mesh-shaped protective shell 110 is effective against the trabecular bone bionic body. 120 to protect and support, and to ensure the strength and firmness of the connection between the mesh protective shell 110 and the bone tissue.

Specifically, in this embodiment, as shown in FIG. 4 , the outer cylinder wall of the mesh protection shell 110 corresponding to the first external thread 112 may further include a bottom mesh wire 112b extending along the bottom of the first external thread 112, The flank meshes 112c are connected between the crest meshes 112a and the base meshes 112b corresponding to the first external thread 112 . The bottom mesh wire 112b is used as the helical profile of the base of the first external thread 112, and the flank mesh wire 112c is connected between the top mesh wire 112a and the base mesh wire 112b to form the first side mesh surface 112d and the second side mesh The mesh surface 112e, the bottom mesh wire 112b and the tooth top mesh wire 112a jointly play a role in shaping and supporting the formation of the first external thread 112, thereby further improving the overall strength and overall smoothness of the first external thread 112 and the mesh protective shell 110. Accordingly, the strength and firmness of the connection between the mesh protective shell 110 and the bone tissue are further ensured, thereby improving the firmness and safety of the implant.

Optionally, in this embodiment, as shown in FIG. 3 and FIG. 4 , the trabecular bone bionic component 100 may further include a tubular reinforcing body 130 , the reinforcing body 130 is located in the accommodating cavity and sleeved on the mesh protective shell 110 inner cylinder. The net-shaped protective shell 110 includes an inner tube and an outer tube which are sleeved, wherein a hollow hole 114 is formed in the inner tube for connecting with the connecting piece 200, and the tubular reinforcing body 130 is sleeved on the inner tube, so that the entire net-shaped protective shell 130 is sleeved. The central position of the protective shell 110 plays a supporting role, correspondingly improving the overall strength of the trabecular bone bionic component 100 , reducing the stress and deformation of the mesh protective shell 110 during the implantation process, thereby improving the usability of the implant. Specifically, the reinforcement body 130 may be a solid body, which provides higher support and strength for the mesh protective shell 110 and the trabecular bone biomimetic body 120 under the same volume. Specifically, the radial thickness of the mesh protective shell 110 and the trabecular bone biomimetic body 120 may be 0.5-1.5 mm.

Specifically, in this embodiment, as shown in FIG. 4 , the top pipe section of the reinforcement body 130 is surrounded by a spiral body 131 ; the accommodating cavity includes a reinforcement cavity and a bionic cavity from top to bottom, the spiral part is matched and embedded in the reinforcement cavity, and the bone is small. The beam bionic body 120 is filled in the bionic cavity. On the basis that the pipe section of the reinforcement body 130 supports the center position of the mesh protective shell 110, the spiral body 131 at the top of the reinforcement body 130 is matched and embedded in the reinforcement cavity at the upper part of the accommodating cavity, which can effectively improve the bionic trabecular bone. The strength of the upper position of the component 100 is increased accordingly, and the supporting and limiting effect of this position on the connector 200 is correspondingly increased, and the force on the prosthesis is reduced in later use. The upper position of the component 100 is deformed, which further leads to the looseness of the connecting component 200, and accordingly improves the strength and use stability of the implant.

Optionally, as shown in FIG. 4 , the mesh-shaped protective shell 110 may include a connecting section 111 and a guiding section 113 from top to bottom, the first external thread 112 is located on the outer cylindrical wall of the connecting section 111 , and the outer cylindrical wall of the guiding section 113 It is constricted from top to bottom. The space between the outer wall of the guide section 113 and the inner cylinder wall is also filled with the trabecular bone bionic body 120 as a part of the bionic cavity. The outer wall of the guide section 113 is constricted from top to bottom. When the implant is implanted, the guide section The outer wall of 113 can be used as a guide to guide and limit the centrality of the trabecular bone bionic component 100 inserted into the threaded hole, thereby ensuring the correspondence between the first external thread 112 and the threaded hole on the bone tissue, and correspondingly improving the convenience of implant placement. and accuracy, reducing the occurrence of locking of the first external thread 112 and the threaded hole caused by the inclination of implant insertion.

Specifically, in this embodiment, as shown in FIG. 1 , the outer contour of the side wall of the second connecting body 220 is consistent with the outer contour of the side wall of the mesh protection shell 110 of the trabecular bone bionic component 100 provided with the first outer thread 112 section . After the connecting piece 200 is connected with the trabecular bone bionic piece 100 to form an implant, the second connecting body 220 protrudes upward from the trabecular bone bionic piece 100 , and the outer contour of the side wall of the second connecting body 220 and the mesh protective shell 110 are provided with a first The outer contour of the side wall of a section of the external thread 112 is the same, then the outer contour of the implant formed by the two is an equal diameter cylindrical shape, and the integrity of the implant is higher. After the implant is placed in the threaded hole, the second connector 220 and the thread The fit of the hole wall is higher, and accordingly, the positional accuracy and stability of implant placement are also higher. Specifically, the outer diameter of the second connecting body 220 may be in the range of 3-5 mm, and the length of the entire implant may be in the range of 4-8 mm.

Optionally, in this embodiment, as shown in FIG. 1 and FIG. 2 , a second external thread 211 may be provided on the outer wall of the first connecting body 210 , and the lead of the first external thread 112 is equal to that of the second external thread 211 . The pitch of the first external thread 112 is N times the pitch of the second external thread 211 , where N is an integer greater than 1. The internal thread of the threaded hole opened on the bone tissue matches the first external thread 112 of the mesh protective shell 110 , the lead and pitch of the two are equal, and the lead of the second external thread 211 is equal to the second external thread 211 , and the pitch of the first external thread 112 is an integer multiple of the pitch of the second external thread 211 greater than 1, then during implant implantation, the trabecular bone bionic component 100 is firstly screwed into the threaded hole through the first external thread 112. As the thread continues to be screwed in, the second external thread 211 of the outer wall of the first connecting body 210 is also screwed to the internal thread of the threaded hole, and every N threaded teeth in the second external thread 211 is a group and one of the internal threads. If the threaded groove is matched, the screw connection firmness and sealing performance of the second external thread 211 and the internal thread of the threaded hole are higher, thereby improving the sealing performance of the implant implanted in the bone tissue, and correspondingly improving the joint sealing between the implant and the bone tissue. It can improve the stability and firmness of the implant, and can reduce the occurrence of poor sealing of the implant to the bone tissue, which affects the later healing speed and effect. Specifically, N can take 2, 3 or 4.

Specifically, when the top of the connecting piece does not include the base, the top of the first connecting body may be provided with a hexagonal tapered hole for the mating connection with the base.

Specifically, in this embodiment, the bottom pipe section of the reinforcing body 130 extends into the corresponding cavity of the guide section 113, and the inner wall of the bottom pipe section is provided with an inner thread, and the inner thread protrudes from the hollow hole 114, which is used for the connection with the implant. 200 connections. Here is a specific connection method of the trabecular bone bionic component 100 and the connector 200. The bottom outer wall of the second connector 220 is provided with a third external thread 221 matching the internal thread. When connecting, the second connector 220 first Insert the hollow hole 114 and insert it into the bottom of the hollow hole 114 with its coaxial center under the guidance of the hollow hole 114 until the third external thread 221 reaches the position of the internal thread, and then rotate the connector 200, the third external thread 221 is screwed with the internal thread, Thereby, the connection between the connector 200 and the trabecular bone bionic device 100 is completed; wherein, the inner thread is arranged on the bottom pipe section of the reinforcement body 130, and the reinforcement body 130 itself has high strength and firmness, and the inner thread and the connector 200 are arranged on it. The connection, on the basis of connecting the connector 200 and the trabecular bone bionic component 100, can effectively reduce the damage to the strength of the inner cylinder wall of the inner thread provided on the mesh protective shell 110, and the easy deformation of the inner thread. , correspondingly ensure the stability of the internal thread, and ensure the connection between the connecting piece 200 and the trabecular bone bionic piece 100 . Of course, in other embodiments, the second connecting piece can also be connected with the inner wall of the hollow hole by screw connection, snap connection, etc., and the second connecting piece can also be connected with the reinforcement body by snap connection or the like.

Finally, it should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A trabecular bone bionic component, characterized in that it comprises a trabecular bone bionic body (120) and a net-shaped protective shell (110), wherein the net-shaped protective shell (110) is a cylindrical structure, and the net-shaped protective shell A hollow hole (114) is formed in the cylinder of (110), and a first external thread (112) is formed on the outer cylinder wall of the net-shaped protective shell (110); the net-shaped protective shell (110) is hollow to form a container A cavity is provided, and the trabecular bone bionic body (120) is accommodated in the accommodating cavity.
The trabecular bone bionic part according to claim 1, characterized in that, the outer cylinder wall of the mesh protective shell (110) corresponding to the first external thread (112) comprises a crest mesh (112a) and The flank mesh (112c), the crest mesh (112a) extends along the crest of the first external thread (112), the flank mesh (112c) is connected to the first external thread ( 112) Correspondingly between the crest mesh wire (112a) and the tooth bottom, and the flank mesh wire (112c) located on the first side of the crest mesh wire (112a) forms a first side mesh surface (112d) , the flank mesh (112c) located on the second side of the crest mesh (112a) forms a second side mesh surface (112e).
The trabecular bone bionic part according to claim 2, characterized in that, the outer cylinder wall of the mesh-shaped protective shell (110) corresponding to the first external thread (112) further comprises a surface along the first external thread (112). (112) The root mesh (112b) extending from the root of the tooth, the flank mesh (112c) is connected to the corresponding crest mesh (112a) of the first external thread (112) and the Between the bottom mesh wires (112b).
The trabecular bone bionic part according to any one of claims 1-3, wherein the trabecular bone bionic part (100) further comprises a tubular reinforcing body (130), wherein the reinforcing body (130) is located at in the accommodating cavity and sleeved on the inner cylinder of the net-shaped protective shell (110).
The trabecular bone bionic part according to claim 4, characterized in that a spiral body (131) surrounds the top pipe section of the reinforcement body (130); the accommodation cavity includes a reinforcement cavity and a bionic cavity from top to bottom , the spiral part is matched and embedded in the reinforcement cavity, and the trabecular bone bionic body (120) is filled in the bionic cavity.
The trabecular bone bionic part according to claim 4, characterized in that, the mesh-shaped protective shell (110) includes a connecting segment (111) and a guiding segment (113) from top to bottom, and the first external thread ( 112) is located on the outer cylinder wall of the connecting section (111), and the outer cylinder wall of the guide section (113) is constricted from top to bottom.
The trabecular bone bionic part according to claim 6, characterized in that the bottom pipe section of the reinforcing body (130) extends into the corresponding cavity of the guide section (113), and the inner wall of the bottom pipe section is provided with An internal thread, which protrudes from the hollow hole (114), is used for connecting with the connecting piece (200) of the implant.
An implant is characterized by comprising a connector (200) and the trabecular bone biomimetic component (100) according to any one of claims 1-7, wherein the connector (200) includes a first A connecting body (210) and a second connecting body (220), the second connecting body (220) extends into the hollow hole (114) of the trabecular bone bionic part (100) and is bionic with the trabecular bone Pieces (100) are connected.
The implant according to claim 8, characterized in that, the outer contour of the side wall of the second connecting body (220) and the mesh protection shell (110) of the trabecular bone bionic component (100) are provided with a first The outer contour of the side wall of a section of the external thread (112) is the same.
The implant according to claim 9, characterized in that, the outer wall of the first connecting body (210) is provided with a second external thread (211), and the lead of the first external thread (112) is the same as the lead of the first external thread (112). The second external threads (211) are equal, and the pitch of the first external thread (112) is N times the pitch of the second external thread (211), where N is an integer greater than 1.