CN113081337A

CN113081337A - Bone trabecula bionic part and implant

Info

Publication number: CN113081337A
Application number: CN202110353972.9A
Authority: CN
Inventors: 岳术俊; 史春生; 陈江平; 史春宝; 许奎雪
Original assignee: Xingtai Langtai Benyuan Medical Instrument Co ltd
Current assignee: Xingtai Langtai Benyuan Medical Instrument Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-07-09
Also published as: WO2022206820A1

Abstract

The invention provides a bone trabecula bionic part and an implant, and relates to the technical field of medical instruments. The bone trabecula bionic piece comprises a bone trabecula bionic body and a reticular protective shell, wherein the reticular protective shell is of a cylindrical structure, a hollow hole is formed in a cylinder of the reticular protective shell, and a first external thread is arranged on the wall of an outer cylinder of the reticular protective shell; the net-shaped protective shell is hollow to form a containing cavity, and the trabecular bone bionic body is contained in the containing cavity. The implant comprises a connecting piece and the bone trabecula bionic piece, wherein the connecting piece comprises a first connecting body and a second connecting body along the length direction of the connecting piece, and the second connecting body extends into a hollow hole of the bone trabecula bionic piece and is connected with the bone trabecula bionic piece. This netted protective housing of bone trabecula bionic member can play the cladding supporting role to the bionic body of bone trabecula to reduce the influence that the bionic member fracture of implantation process bone trabecula caused and the complication that causes, in addition, netted protective housing can be connected with bone tissue, can effectively increase the effective bone union length of bone trabecula bionic member.

Description

Bone trabecula bionic part and implant

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bone trabecula bionic piece and an implant.

Background

The oral craniomaxillofacial implant technology is a technology for implanting an implant with good biocompatibility with a human body into a jawbone of an oral edentulous part of the human body or a bone tissue of a craniofacial defect part of the human body through a surgical operation to be used as a retainer of an artificial tooth root or a craniofacial prosthesis to repair the oral tooth jaw and craniofacial defects. The prior advanced bone fusion type implant system is not only used for implanting false tooth repair, but also can be implanted into cheekbones, cranium, mastoid and periorbital to finish the retention of maxillofacial prosthesis such as artificial jaw, artificial ear and artificial eye and hearing aid, and solves some problems of oral cranio-maxillofacial defect repair caused by trauma and tumor.

In order to improve the bone integration degree of the implanted implant and bone tissues, the existing implant generally comprises a bone trabecula bionic section which imitates the structure of a human bone trabecula, however, because more sharp breakpoints exist on the surface of the bone trabecula bionic section, the overall strength of the bone trabecula bionic section is poor and the bone trabecula bionic section is easy to break, the existing implant generally can be provided with a connecting section which is used for being connected with the bone tissues at the bottom end of the bone trabecula bionic section, the effective bone integration length of the implanted implant and the bone tissues is short, and the implantation of the implant is influenced by the easy breakage of the bone trabecula bionic section in the implantation process, and other complications can even be caused.

Disclosure of Invention

The invention aims to provide a trabecular bone bionic part and an implant, and aims to solve the technical problems that the implantation of the implant is influenced even other complications are caused due to the fact that a trabecular bone bionic section in the existing implant is easy to break, and the effective bone combination length of the existing implant after implantation is short.

In order to solve the problems, the invention provides a trabecular bone bionic piece, which comprises a trabecular bone bionic body and a reticular protective shell, wherein the reticular protective shell is of a cylindrical structure, a hollow hole is formed in a cylinder of the reticular protective shell, and the outer cylinder wall of the reticular protective shell is provided with a first external thread; the mesh-shaped protective shell is hollow to form an accommodating cavity, and the trabecular bone bionic body is accommodated in the accommodating cavity.

Optionally, the outer cylinder wall of the mesh-shaped protective shell corresponding to the first external thread includes a crest mesh and a flank mesh, the crest mesh extends along a crest of the first external thread, the flank mesh is connected between the crest mesh and a root corresponding to the first external thread, the flank mesh located on a first side of the crest mesh forms a first flank mesh, and the flank mesh located on a second side of the crest mesh forms a second flank mesh.

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

Optionally, the trabecular bone bionic member further comprises a tubular reinforcing body, wherein the reinforcing body is located in the accommodating cavity and sleeved on the inner cylinder body of the reticular protective shell.

Optionally, a spiral body is arranged around the top pipe section of the reinforcing body; the accommodating cavity comprises a reinforcing cavity and a bionic cavity from top to bottom, the spiral part is embedded in the reinforcing cavity in a matching mode, and the bone trabecula bionic body is filled in the bionic cavity.

Optionally, the protective mesh shell includes, from top to bottom, a connecting section and a guiding section, the first external thread is located on an outer cylindrical wall of the connecting section, and an outer cylindrical wall of the guiding section is tapered from top to bottom.

Optionally, the bottom pipe section of the reinforcing body extends into the cavity corresponding to the guide section, an inner thread is arranged on the inner wall of the bottom pipe section, and the inner thread protrudes out of the hollow hole and is used for being connected with a connecting piece of the implant.

The invention also provides an implant which comprises a connecting piece and the bone trabecula bionic piece, wherein the connecting piece comprises a first connecting body and a second connecting body along the length direction of the connecting piece, and the second connecting body extends into the hollow hole of the bone trabecula bionic piece and is connected with the bone trabecula bionic piece.

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-shaped protective shell of the trabecular bone biomimetic member, which is provided with the first external thread section.

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 the second external thread, the pitch of the first external thread is N times of the pitch of the second external thread, and N is an integer greater than 1.

According to the trabecular bone biomimetic member and the implant provided by the invention, on one hand, the mesh-shaped protective shell is used as a protection and support structure to be coated outside the trabecular bone biomimetic body, the extending end part of the outer side of the trabecular bone biomimetic body is connected with the inner wall of the accommodating cavity of the mesh-shaped protective shell or is positioned in the accommodating cavity of the mesh-shaped protective shell, the smoothness and the uniformity of the outer wall of the mesh-shaped protective shell are higher, the corresponding strength is higher, and the probability of fracture caused by stress is lower, so that the influence on implantation caused by fracture of the trabecular bone biomimetic body in the implantation process of the trabecular bone biomimetic member and the occurrence of complications are reduced, and the implantation. On the other hand, netted protective housing is netted cladding in the outside of the bionic body of bone trabecula, the setting of netted protective housing is less to the increase of whole bone trabecula bionic member length, set up first external screw thread at the outer wall of netted protective housing, bone trabecula bionic member realizes being connected with bone tissue through first external screw thread, when the degree of depth of seting up the screw hole on bone tissue is regular, the whole bone that can carry out the osseointegration with bone tissue of the bone trabecula bionic member of this application, it is longer with the effective osseointegration length of bone tissue promptly, the corresponding bone integration firmness of improving implant and bone tissue, and reduce the emergence of the later stage implant pine move the condition of even droing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of an implant provided by the present invention;

fig. 2 is a schematic view of a connector in the implant of fig. 1;

FIG. 3 is a schematic view of a trabecular biomimetic provided by the present invention;

fig. 4 is an exploded view of the trabecular biomimetic in fig. 3.

Description of reference numerals:

100-trabecular bone biomimetic; 110-a mesh protective shell; 111-a connecting segment; 112-a first external thread; 112 a-crest mesh; 112 b-root mesh; 112 c-a lateral mesh; 112 d-first side web; 112 e-second side wire side; 113-a guide section; 114-a hollow bore; 120-trabecular biomimetics; 130-reinforcement; 131-spirochete; 200-a connector; 210-a first connector; 211-second external thread; 220-a second connector; 221-third external thread.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment provides a trabecular bone biomimetic member 100, as shown in fig. 3 and 4, comprising a trabecular bone biomimetic body 120 and a mesh-shaped protective shell 110, wherein the mesh-shaped protective shell 110 is a tubular structure, a hollow hole 114 is formed in a tube of the mesh-shaped protective shell 110, and an outer tube wall of the mesh-shaped protective shell 110 is provided with a first external thread 112; the mesh-shaped protective shell 110 is hollow to form a containing cavity, and the trabecular bone bionic body 120 is contained in the containing cavity.

The present embodiment further provides an implant, as shown in fig. 1-3, comprising a connecting member 200 and the above-mentioned trabecular bone biomimetic member 100, wherein the connecting member 200 comprises a first connecting body 210 and a second connecting body 220 along a length direction thereof, and the second connecting body 220 extends into the hollow hole 114 of the trabecular bone biomimetic member 100 and is connected to the trabecular bone biomimetic member 100.

The trabecular bone biomimetic member 100 and the implant provided by the embodiment, wherein the trabecular bone biomimetic member 100 comprises a trabecular bone biomimetic body 120 for simulating a human trabecular bone structure to ensure the growth and fusion firmness of bone tissues and the trabecular bone biomimetic body, and a mesh protective shell 110 which is coated outside the trabecular bone biomimetic body 120 to protect the trabecular bone biomimetic body 120 to improve the strength of the whole trabecular bone biomimetic member 100 and is connected with an implanted part of a human body; wherein, the implant comprises the trabecular bone bionic part 100 used for being implanted into the implantation part of the human body and a connecting part 200 used for connecting the prosthesis.

When the bone screw is used, the second connecting body 220 of the connecting piece 200 is inserted into the hollow hole 114 of the bone trabecula bionic piece 100 and connected with the hollow hole to form an implant, a threaded hole matched with the first external thread 112 is formed in a bone tissue of an implanted part of a human body, and then the bone trabecula bionic piece 100 is screwed into the threaded hole, namely the mesh protective shell 110 is in threaded connection with the bone tissue through the first external thread 112, so that the primary connection of the implant and the bone tissue is completed; after a period of time, bone tissues can grow into pores in the trabecular bone biomimetic body 120 through the gaps of the mesh protective shell 110, so that the bone tissues are combined with the mesh protective shell 110 and the trabecular bone biomimetic body 120 into a whole, good and stable bone combination of the bone tissues and the trabecular bone biomimetic member 100 is realized, the long-term stability of the implanted implant is correspondingly improved, and the occurrence of the situation that a patient needs to be repaired for many times or even needs to be implanted for two times due to later-stage implant loosening is reduced; the connecting member 200 itself includes an abutment or an abutment is then installed on the top end of the connecting member 200, and after the soft tissue is healed, a prosthesis such as a crown is installed on the abutment, thereby completing the implant restoration. Specifically, the implant can be implanted into the oral cavity, cheekbone, mastoid and periorbital to complete the retention of maxillofacial prosthesis (pseudofacial) such as teeth, artificial jaw, artificial ear and artificial eye and the retention of hearing aid, so as to solve the defect repair of oral cranio-maxillofacial.

Wherein, the trabecular bone biomimetic body 120 in the trabecular bone biomimetic member 100 imitates the irregular three-dimensional reticular structure (the lines in fig. 4 are only schematic, and the reticular distribution of the trabecular bone biomimetic body 120 is not limited), on one hand, the reticular protective shell 110 is used as a protection and support structure to be coated outside the trabecular bone biomimetic body 120, the extension end part of the outer side of the trabecular bone biomimetic body 120 is connected with the inner wall of the containing cavity of the reticular protective shell 110, or in the containing cavity of the reticular protective shell 110, the smoothness and the regularity of the outer wall of the reticular protective shell 110 are higher, the corresponding strength is higher, the probability of fracture caused by stress is lower, thereby reducing the influence of the fracture of the trabecular bone bionic body 120 on the implantation and the occurrence of complications caused in the implantation process of the trabecular bone bionic body 100, and correspondingly improving the implantation success rate and the implantation safety of the implant. On the other hand, netted protective housing 110 is netted cladding in the outside of the bionic body 120 of trabecula bone, the setting of netted protective housing 110 is less to the increase of whole trabecula bone bionic member 100 length, set up first external screw thread 112 at the outer wall of netted protective housing 110, trabecula bone bionic member 100 realizes being connected with the bone tissue through first external screw thread 112, when the degree of depth of seting up the screw hole on the bone tissue is regular, the trabecula bone bionic member 100 of this application is whole can carry out the osseointegration with the bone tissue, effective osseointegration length with the bone tissue is longer promptly, the corresponding osseointegration firmness of improving planting body and bone tissue, and reduce the emergence of the condition that later stage planting body pine moves or even drops.

Specifically, both the connecting member 200 and the trabecular bone biomimetic member 100 can be made of Ti6Al4V material, and the mesh-shaped protective shell 110 of the trabecular bone biomimetic member 100 and the trabecular bone biomimetic body 120 can be integrally printed and formed by using an additive manufacturing technology, so that the combination firmness and the processing convenience of the mesh-shaped protective shell 110 and the trabecular bone biomimetic body 120 are improved, a processing aid is not required to be introduced in the processing process to construct a porous structure, and the generated trabecular bone biomimetic member 100 has no aid residue.

Alternatively, in this embodiment, as shown in fig. 4, the outer cylinder wall of the mesh-shaped protective shell 110 corresponding to the first external thread 112 may include a top mesh wire 112a and a side mesh wire 112c, the top mesh wire 112a extends along the top of the first external thread 112, the side mesh wire 112c is connected between the top mesh wire 112a and the bottom of the first external thread 112, the side mesh wire 112c on the first side of the top mesh wire 112a forms a first side mesh surface 112d, and the side mesh wire 112c on the second side of the top mesh wire 112a forms a second side mesh surface 112 e. Here, a specific form of a section of the outer cylinder wall of the mesh-shaped protective shell 110, which is provided with the first external thread 112, includes a crest mesh 112a as a crest spiral line of the first external thread 112, two sides of the crest mesh 112a are tooth side meshes 112c connected between a root and the crest mesh 112a, respectively, and a first side mesh 112d and a second side mesh 112e, which are formed on two sides of the crest mesh 112a by the tooth side meshes 112c, respectively, are used as two side walls of the first external thread 112 thread, so that the outer surfaces of the crest mesh 112a, the first side mesh 112d and the second side mesh 112e are all smooth-transition spiral lines or smooth-transition curved surfaces, and there is no sharp break point, thereby ensuring the overall strength and overall smoothness of the first external thread 112 and the mesh-shaped protective shell 110, and accordingly ensuring the protective and supporting functions of the mesh-shaped protective shell 110 on the trabecular bone bionic 120, and ensures the connection strength and firmness of the mesh-shaped protective shell 110 and the bone tissue.

Specifically, in this embodiment, as shown in fig. 4, the outer cylinder wall of the mesh-shaped protective shell 110 corresponding to the first external thread 112 may further include a root mesh 112b extending along the root of the first external thread 112, and the lateral mesh 112c is connected between the top mesh 112a and the bottom mesh 112b corresponding to the first external thread 112. The root mesh 112b is used as the spiral line of the root of the first external thread 112, the tooth side mesh 112c is connected between the tooth top mesh 112a and the tooth bottom mesh 112b to form a first side mesh 112d and a second side mesh 112e, the tooth bottom mesh 112b and the tooth top mesh 112a jointly play a shaping supporting role for the formation of the first external thread 112, thereby further improving the overall strength and the overall smoothness of the first external thread 112 and the mesh-shaped protective shell 110, correspondingly further ensuring the connection strength and the firmness of the mesh-shaped protective shell 110 and bone tissues, and further improving the planting firmness and the safety of the implant.

Optionally, in this embodiment, as shown in fig. 3 and 4, the trabecular bone biomimetic member 100 may further include a tubular reinforcement body 130, and the reinforcement body 130 is located in the accommodating cavity and sleeved on the inner cylinder of the mesh-shaped protective shell 110. The reticular protective shell 110 comprises an inner cylinder and an outer cylinder which are sleeved, wherein a hollow hole 114 used for being connected with the connecting piece 200 is formed inside the inner cylinder, and the inner cylinder is sleeved with the tubular reinforcing body 130, so that the central position of the whole reticular protective shell 110 is supported, the overall strength of the bone trabecula bionic piece 100 is correspondingly improved, the stress deformation of the reticular protective shell 110 in the implantation process is reduced, and the usability of the implant is further improved. Specifically, the reinforcing body 130 may be a solid body, which provides higher support and strength for the mesh-shaped protective shell 110 and the trabecular bone bionic body 120 under the same volume. Specifically, the mesh-like protective shell 110 and the trabecular bionic body 120 may have a radial thickness of 0.5-1.5 mm.

Specifically, in the present embodiment, as shown in fig. 4, a top tube of the reinforcing body 130 is surrounded by a spiral 131; the containing cavity comprises a reinforcing cavity and a bionic cavity from top to bottom, the spiral part is embedded in the reinforcing cavity in a matching mode, and the trabecular bone bionic body 120 is filled in the bionic cavity. On the basis that the pipe section part of reinforcing body 130 plays the supporting role to the central point of netted protective housing 110, spiral body 131 at the top of reinforcing body 130 matches and inlays in the reinforcing intracavity on holding chamber upper portion, can effectively improve the intensity of the bionic piece 100 upper portion position of trabecula bone, correspondingly improve the support limiting displacement of this position to connecting piece 200, prosthesis atress transmits the effort to the bionic piece 100 of trabecula bone through connecting piece 200 and leads to the deformation of the upper portion position of bionic piece 100 of trabecula bone when reducing later stage use, and then lead to the emergence of the not hard up condition of connecting piece 200, correspondingly improve the intensity and the stability in use of the planting body.

Alternatively, as shown in fig. 4, the protective net 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 an outer cylindrical wall of the connecting section 111, and an outer cylindrical wall of the guiding section 113 is tapered from top to bottom. The space between the outer wall of direction section 113 and the inner tube wall also has filled bone trabecula bionical body 120 as the partly packing of bionical chamber, the outer wall of direction section 113 is the throat form from top to bottom, when implanting the implant, the outer wall of direction section 113 can lead spacingly as the guide face to the centrality of bone trabecula bionical piece 100 insertion screw hole, thereby ensure the correspondence of screw hole on first external screw thread 112 and the osseous tissue, the corresponding implantation convenience and the accuracy nature that improves the implant, it leads to the emergence of first external screw thread 112 and the dead-locked condition of screw hole to reduce the implant and insert the slope.

Specifically, in this embodiment, as shown in fig. 1, the outer contour of the sidewall of the second connecting body 220 is consistent with the outer contour of the sidewall of the mesh-shaped protective shell 110 of the trabecular bionic member 100, which is provided with the first external thread 112. After the connecting piece 200 is connected with the trabecular bone bionic piece 100 to form an implant, the second connecting body 220 protrudes upwards to form the trabecular bone bionic piece 100, 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 section of the first external thread 112 arranged on the reticular protective shell 110, the outer contours of the two formed implants are in a cylindrical shape with the same diameter, the integrity of the implant is higher, after the implant is implanted into a threaded hole, the attaching degree of the second connecting body 220 and the wall of the threaded hole is higher, and correspondingly, the position accuracy and the stability of the implant implantation are also higher. Specifically, the second connecting body 220 may have an outer diameter ranging from 3 to 5mm, and the entire length of the implant may be 4 to 8 mm.

Alternatively, in the present embodiment, as shown in fig. 1 and 2, a second external thread 211 may be provided on an outer wall of the first connection body 210, a lead of the first external thread 112 is equal to that of the second external thread 211, and a pitch of the first external thread 112 is N times a pitch of the second external thread 211, where N is an integer greater than 1. The internal thread of the threaded hole formed on the bone tissue is matched with the first external thread 112 of the reticular protective shell 110, the lead and the thread pitch of the two are equal, the lead of the second external thread 211 is equal to the second external thread 211, and the thread pitch of the first external thread 112 is an integral multiple of the thread pitch of the second external thread 211 which is greater than 1, so that in the implant implantation process, the bone trabecula bionic piece 100 is firstly screwed in the internal thread of the threaded hole through the first external thread 112, along with the continuous screwing in, the second external thread 211 of the outer wall of the first connecting body 210 is also screwed in the internal thread of the threaded hole, and every N thread teeth in the second external thread 211 are matched with one thread groove of the internal thread, so that the screwing firmness and the tightness of the second external thread 211 and the internal thread of the threaded hole are higher, thereby improving the tightness of the implant implanted bone tissue of the implant, correspondingly improving the combination tightness and firmness of the implant and, and can reduce the occurrence of the condition that the later healing speed and effect are influenced by poor sealing performance of the implant on the bone tissue. In particular, N may take the value 2, 3 or 4.

In particular, when the top of the connecting member does not comprise a abutment, the top of the first connecting body may be provided with a hexagonal tapered hole for a mating connection with the abutment.

Specifically, in this embodiment, the bottom tube of the reinforcing body 130 extends into the corresponding cavity of the guiding section 113, and the inner wall of the bottom tube is provided with an internal thread, which protrudes out of the hollow hole 114 for connecting with the implant connecting member 200. Here is a concrete connection mode of the trabecular bone biomimetic member 100 and the connecting member 200, the outer wall of the bottom of the second connecting member 220 is provided with a third external thread 221 matched with the internal thread, when in connection, the second connecting member 220 is firstly inserted into the hollow hole 114 and is inserted into the bottom of the hollow hole under the guiding action of the hollow hole 114, until the third external thread 221 reaches the position of the internal thread, then the connecting member 200 is rotated, and the third external thread 221 is screwed with the internal thread, thereby completing the connection of the connecting member 200 and the trabecular bone biomimetic member 100; wherein, the internal thread sets up in the bottom pipeline section of reinforcing body 130, and reinforcing body 130 self intensity and firmness are higher, sets up the internal thread on it and is connected with connecting piece 200, on the basis of realizing connecting piece 200 and the bionic piece of bone trabecula 100, can effectively reduce the internal thread and set up the destruction that the inner tube wall that sets up in netted protective housing 110 caused to its intensity to and the emergence of the easy deformation condition of internal thread, correspondingly ensure the internal thread stability, ensure being connected of connecting piece 200 and bionic piece of bone trabecula 100. Of course, in other embodiments, the second connecting member may be connected to the inner wall of the hollow hole by a screw connection, a snap connection, or the like, or the second connecting member may be connected to the reinforcing body by a snap connection, or the like.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable 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 applied to 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

1. The bone trabecula bionic piece is characterized by comprising a bone trabecula bionic body (120) and a net-shaped protective shell (110), wherein the net-shaped protective shell (110) is of a cylindrical structure, a hollow hole (114) is formed in the cylinder of the net-shaped protective shell (110), and a first external thread (112) is arranged on the outer cylinder wall of the net-shaped protective shell (110); the mesh-shaped protective shell (110) is hollow to form an accommodating cavity, and the trabecular bone bionic body (120) is accommodated in the accommodating cavity.

2. The trabecular biomimetic member as recited in claim 1, wherein the outer cylindrical wall of the mesh-shaped protective shell (110) corresponding to the first external thread (112) includes a crest mesh (112a) and a flank mesh (112c), the crest mesh (112a) extends along a crest of the first external thread (112), the flank mesh (112c) is connected between the crest mesh (112a) and a root of the first external thread (112), and the flank mesh (112c) located at a first side of the crest mesh (112a) forms a first flank (112d) and the flank mesh (112c) located at a second side of the crest mesh (112a) forms a second flank (112 e).

3. The trabecular biomimetic member as recited in claim 2, wherein the outer cylindrical wall of the mesh-shaped protective shell (110) corresponding to the first external thread (112) further comprises a root mesh (112b) extending along a root of the first external thread (112), and the lateral mesh (112c) is connected between the top mesh (112a) and the bottom mesh (112b) corresponding to the first external thread (112).

4. The trabecular biomimetic member as claimed in any one of claims 1-3, wherein the trabecular biomimetic member (100) further comprises a tubular reinforcement body (130), and the reinforcement body (130) is located in the accommodating cavity and sleeved on the inner cylinder of the mesh-shaped protective shell (110).

5. The trabecular biomimetic member as claimed in claim 4, wherein a top tube section of the reinforcement body (130) is provided with a spiral (131); the accommodating cavity comprises a reinforcing cavity and a bionic cavity from top to bottom, the spiral part is embedded in the reinforcing cavity in a matching mode, and the trabecular bone bionic body (120) is filled in the bionic cavity.

6. The trabecular biomimetic member as claimed in claim 4, wherein the protective mesh shell (110) comprises 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) is in a necking shape from top to bottom.

7. The trabecular biomimetic member as claimed in claim 6, wherein a bottom tube section of the reinforcement body (130) extends into the corresponding cavity of the guide section (113), and an inner wall of the bottom tube section is provided with an internal thread protruding out of the hollow hole (114) for connecting with a connector (200) of an implant.

8. An implant, comprising a connector (200) and the trabecular biomimetic member (100) according to any of claims 1-7, wherein the connector (200) comprises a first connector (210) and a second connector (220) along its length, and the second connector (220) extends into the hollow hole (114) of the trabecular biomimetic member (100) and is connected to the trabecular biomimetic member (100).

9. The implant according to claim 8, wherein the outer contour of the sidewall of the second connecting body (220) is identical to the outer contour of the sidewall of the section of the mesh-shaped protective shell (110) of the trabecular bionic member (100) provided with the first external thread (112).

10. The implant of claim 9, wherein the outer wall of the first connector body (210) is provided with a second external thread (211), the lead of the first external thread (112) is equal to the second external thread (211), and the pitch of the first external thread (112) is N times the pitch of the second external thread (211), wherein N is an integer greater than 1.