Bone filling prosthesis

Abstract

The present invention provides a bone filling prosthesis, comprising: a main body, the main body is used to fill human bone, the main body is provided with a first positioning hole and a second positioning hole, the first positioning hole is connected with the second positioning hole; a positioning member, the first positioning hole is used to position the positioning member, at least part of the positioning member protrudes from the outer wall of the main body, so as to be positioned with the bone through the positioning member; a guide member, detachably arranged in the second positioning hole, the guide member is provided with a guide channel, the guide channel is used to communicate with the first positioning hole, so that the positioning member enters the first positioning hole after passing through the guide channel. The technical solution provided by the present invention can solve the technical problem of poor filling stability of bone filling prostheses in the prior art.

Description

Technical Field

[0001] The invention relates to the field of medical technology, in particular to a bone filling prosthesis. Background Art

[0002] At present, bone defects are a problem that orthopedic surgeons often encounter. Bone defect filling prostheses in the prior art are generally granular, columnar and irregular in shape. Bone filling prostheses generally need to have good stability after implantation in order to achieve a long-term filling effect.

[0003] However, the bone filling prosthesis in the prior art generally does not have a structure for connecting with the human bone, which is not conducive to the fixation of the bone filling prosthesis to the human bone and is not conducive to achieving a long-term filling effect. Summary of the invention

[0004] The main purpose of the present invention is to provide a bone filling prosthesis to solve the technical problem of poor filling stability of bone filling prostheses in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a bone filling prosthesis, comprising: a main body, the main body is used to fill the bone of the human body, the main body is provided with a first positioning hole and a second positioning hole, the first positioning hole is connected with the second positioning hole; a positioning member, the first positioning hole is used to position the positioning member, at least part of the positioning member is protruding from the outer wall of the main body, so as to be positioned with the bone through the positioning member; a guide member, detachably arranged in the second positioning hole, the guide member is provided with a guide channel, the guide channel is used to be connected with the first positioning hole, so that the positioning member enters the first positioning hole after passing through the guide channel.

[0006] Furthermore, an extending direction of the first positioning hole and an extending direction of the second positioning hole are arranged at a first predetermined angle.

[0007] Furthermore, the first positioning hole includes a first hole segment and a second hole segment, both of which are cylindrical hole segments, and the hole diameter of the first hole segment is larger than the hole diameter of the second hole segment, so that a positioning step is formed at the connection between the first hole segment and the second hole segment, so that the positioning piece can be abutted and positioned through the positioning step.

[0008] Furthermore, the guide channel includes a first connecting channel and a second connecting channel, the first connecting channel is connected to the second connecting channel, the second connecting channel is located at one end of the first connecting channel close to the first positioning hole, and the extension direction of the first connecting channel is set at a second predetermined angle to the extension direction of the second connecting channel.

[0009] Furthermore, the bone filling prosthesis further comprises: a driving member, at least a portion of which is movably disposed in the guide channel, so that the driving member pushes the positioning member to move from the guide channel to the first positioning hole.

[0010] Furthermore, a first positioning structure is provided on the positioning member, and the driving member includes: an operating part; a pushing part, which is connected to the operating part, and the pushing part is used to be movably arranged in the guide channel, and a second positioning structure cooperating with the first positioning structure is provided on the pushing part, and the first positioning structure cooperates with the second positioning structure so that the pushing part pushes the positioning member to move into the first positioning hole.

[0011] Furthermore, a third positioning structure is provided on the main body, and a fourth positioning structure cooperating with the third positioning structure is provided on the guide member. The third positioning structure cooperates with the fourth positioning structure so that the outlet of the guide channel is located at a position connected to the first positioning hole.

[0012] Further, the third positioning structure is a positioning groove, and the fourth positioning structure is a positioning protrusion, and the positioning protrusion is arranged in the positioning groove to position the guide member at a position where the outlet of the guide channel is connected to the first positioning hole.

[0013] Furthermore, the bone filling prosthesis further includes: a filling piece, at least a portion of which is used to be disposed in the second positioning hole, so that the second positioning hole is filled by the filling piece.

[0014] Furthermore, at least a portion of the filling piece is spaced apart from the inner hole wall of the second positioning hole to form an accommodating gap, so as to accommodate bone debris through the accommodating gap.

[0015] Furthermore, the bone filling prosthesis also includes a connecting piece, which includes a first connecting segment and a second connecting segment. The first connecting segment and the second connecting segment are connected, the first connecting segment is used to connect to the main body, and the second connecting segment is used to connect to the filling piece, so that the main body and the filling piece are connected through the connecting piece.

[0016] Furthermore, the first connecting section is a first threaded section, the second connecting section is a second threaded section, a first threaded hole matching the first threaded section is provided on the main body, and a second threaded hole matching the second threaded section is provided on the filling piece, so that the first connecting section is threadedly connected to the main body, and the second connecting section is threadedly connected to the filling piece.

[0017] Furthermore, the filling piece includes a filling section and a positioning section, the positioning section is connected to the filling section, the filling section is used to be set in the second positioning hole, the outer edge of the positioning section protrudes from the outer edge of the filling section, so as to be abutted and positioned with the main body through the positioning section.

[0018] Furthermore, a through hole is provided on the main body, the through hole is spaced apart from the first positioning hole, and the through hole is communicated with the second positioning hole so that bone debris can fall into the second positioning hole through the through hole.

[0019] By applying the technical solution of the present invention, after the main body is filled into the human bone, the guide is installed in the second positioning hole, so that the positioning member enters the first positioning hole after passing through the guide channel of the guide member, and the positioning member is positioned through the first positioning hole, and at least part of the first positioning member protrudes from the outer wall of the main body so as to be inserted into the bone for positioning, thereby facilitating the connection between the bone filling prosthesis and the human bone, facilitating the growth of the bone filling prosthesis and the human bone, and improving the filling stability. Therefore, the technical solution provided by the present invention can solve the technical problem of poor filling stability of the bone filling prosthesis in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic structural diagram of a bone filling prosthesis provided according to an embodiment of the present invention is shown;

[0022] Figure 2 A cross-sectional view showing a partial structure of a bone filling prosthesis provided according to an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a filling member provided according to an embodiment of the present invention is shown;

[0024] Figure 4 A schematic diagram showing the effect of a driving member driving a positioning member to move in a guide member according to an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a structure in which a driving member drives a positioning member to move into a first positioning hole according to an embodiment of the present invention is shown;

[0026] Figure 6 A schematic structural diagram of a guide member provided according to an embodiment of the present invention is shown; and

[0027] Figure 7 A cross-sectional view of a guide member provided according to an embodiment of the present invention is shown.

[0028] The above drawings include the following reference numerals:

[0029] 10. Main body; 11. First positioning hole; 111. First hole section; 112. Second hole section; 12. Second positioning hole; 14. Through hole; 20. Positioning member; 21. First positioning structure; 30. Guide member; 31. Guide channel; 311. First connecting channel; 312. Second connecting channel; 32. Fourth positioning structure; 40. Drive member; 41. Operating member; 42. Pushing member; 50. Filling member; 51. Filling section; 52. Positioning section; 60. Connecting member; 61. First connecting section; 62. Second connecting section. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] like Figures 1 to 7 As shown, an embodiment of the present invention provides a bone filling prosthesis, which includes a main body 10, a positioning member 20 and a guide member 30. The main body 10 is used to fill the bone of the human body. The main body 10 is provided with a first positioning hole 11 and a second positioning hole 12, and the first positioning hole 11 is connected with the second positioning hole 12. The first positioning hole 11 is used to position the positioning member 20. At least part of the positioning member 20 is protruding from the outer wall of the main body 10 so as to be positioned with the bone through the positioning member 20. The guide member 30 is detachably arranged in the second positioning hole 12. The guide member 30 is provided with a guide channel 31. The guide channel 31 is used to communicate with the first positioning hole 11 so that the positioning member 20 enters the first positioning hole 11 after passing through the guide channel 31.

[0032] The bone filling prosthesis provided by the embodiment of the present invention has an outer surface of the main body 10 which is a smooth surface so that the main body 10 can enter the human bone. Specifically, the outer surface of the main body 10 includes a cylindrical surface and an arc end surface. Preferably, the arc end surface can be a spherical surface, and the cylindrical surface and the spherical surface are connected. Specifically, the first positioning hole 11 is arranged close to the spherical surface. Specifically, the positioning member 20 in this embodiment is a screw, and the first positioning hole 11 is a hole adapted to the outer surface of the screw.

[0033] During the filling process, the main body 10 is first implanted into the designated position in the bone, and then the guide 30 is installed in the second positioning hole 12, and then the positioning member 20 enters the first positioning hole 11 after passing through the guide channel 31, and at least part of the positioning member 20 is protruded from the outer wall surface of the main body 10 so as to be inserted into the bone for positioning, so that the positioning member 20 can facilitate the connection between the bone filling prosthesis and the bone, and facilitate the mutual growth of the human bone and the bone filling prosthesis after long-term implantation, thereby improving the filling stability. Therefore, the bone filling prosthesis provided by the embodiment of the present invention can solve the technical problem of poor filling stability of the bone filling prosthesis in the prior art.

[0034] In the present embodiment, the extension direction of the first positioning hole 11 and the extension direction of the second positioning hole 12 are arranged at a first predetermined angle. Specifically, the second positioning hole 12 extends along the extension direction of the main body 10, and the extension direction of the first positioning hole 11 and the extension direction of the second positioning hole 12 are arranged obliquely. With such an arrangement, it is convenient for the positioning member 20 to enter the first positioning hole 11. Specifically, after the main body 10 enters the human bone, it is convenient for the positioning member 20 to move into the first positioning hole 11, and the positioning member 20 protruding from the main body 10 is prevented from piercing into the human bone for positioning. Specifically, the main body 10 in the present embodiment is a symmetrical structure, the second positioning hole 12 is also a symmetrical structure, there are multiple first positioning holes 11, and the multiple first positioning holes 11 are symmetrically arranged about the symmetry axis of the second positioning hole 12.

[0035] Specifically, the first positioning hole 11 in the present embodiment includes a first hole segment 111 and a second hole segment 112, both of which are cylindrical hole segments, and the aperture of the first hole segment 111 is larger than that of the second hole segment 112, so that a positioning step is formed at the connection between the first hole segment 111 and the second hole segment 112, so that the positioning member 20 is abutted and positioned by the positioning step, so as to improve the positioning stability of the positioning member 20. Specifically, the connection between the first hole segment 111 and the second hole segment 112 in the present embodiment is a smooth arc transition.

[0036] In this embodiment, the guide channel 31 includes a first communication channel 311 and a second communication channel 312. The first communication channel 311 is connected to the second communication channel 312. The second communication channel 312 is located at one end of the first communication channel 311 close to the first positioning hole 11, so as to communicate with the first positioning hole 11 through the second communication channel 312. The extension direction of the first communication channel 311 and the extension direction of the second communication channel 312 are arranged at a second predetermined angle. Specifically, the first communication channel 311 extends along the extension direction of the second positioning hole 12, and the second communication channel 312 extends along the extension direction of the first positioning hole 11, so that the first predetermined angle and the second predetermined angle can be made the same. With such a setting, it is possible to facilitate the docking of the outlet of the second communication channel 312 with the first positioning hole 11, so that the second communication channel 312 is connected to the first positioning hole 11, so that the positioning rib enters the first positioning hole 11 after passing through the second communication channel 312, so as to improve the stability of positioning through the positioning member 20, and thus to improve the stability of filling.

[0037] In order to conveniently move the positioning member 20 into the first positioning hole 11, the bone filling prosthesis in this embodiment further includes a driving member 40, at least a portion of which is movably disposed in the guide channel 31, so that the positioning member 20 is pushed by the driving member 40 to move from the guide channel 31 to the first positioning hole 11. Such a configuration can improve the convenience of operation.

[0038] Specifically, the positioning member 20 is provided with a first positioning structure 21, and the driving member 40 includes an operating portion 41 and a pushing portion 42, the pushing portion 42 is connected to the operating portion 41, and the pushing portion 42 is used to be movably arranged in the guide channel 31, and the pushing portion 42 is provided with a second positioning structure that cooperates with the first positioning structure 21, and the first positioning structure 21 cooperates with the second positioning structure so that the pushing portion 42 pushes the positioning member 20 to move into the first positioning hole 11. Specifically, the first positioning structure 21 is a positioning groove, and the end of the pushing portion 42 away from the operating portion 41 forms a second positioning structure, and the end of the pushing portion 42 away from the operating portion 41 is inserted into the positioning groove. By operating the operating portion 41, the pushing portion 42 can push the positioning member 20 to move in the guide channel 31, so that the positioning member 20 can reliably move into the first positioning hole 11. Specifically, the pushing portion 42 in this embodiment can be made of an elastic material or a flexible material, so that the pushing member can enter the second connecting channel 312 from the first connecting channel 311 to better push the positioning member 20 to move in the guide channel 31 .

[0039] In this embodiment, a third positioning structure is provided on the main body 10, and a fourth positioning structure 32 cooperating with the third positioning structure is provided on the guide member 30. The third positioning structure cooperates with the fourth positioning structure 32 so that the outlet of the guide channel 31 is located at a position communicating with the first positioning hole 11. With such a setting, it is convenient to communicate the guide channel 31 with the first positioning hole 11, and then it is convenient to allow the positioning member 20 to enter the first positioning hole 11 through the guide channel 31.

[0040] Specifically, the third positioning structure in this embodiment is a positioning groove, and the fourth positioning structure 32 is a positioning protrusion, which is arranged in the positioning groove to position the guide member 30 at a position where the outlet of the guide channel 31 is connected to the first positioning hole 11. The matching structure of the positioning groove and the positioning protrusion is simple in structure, easy to manufacture and produce, and easy to improve the accuracy of positioning.

[0041] In this embodiment, the bone filling prosthesis also includes a filling member 50, at least part of which is used to be arranged in the second positioning hole 12, so as to fill the second positioning hole 12 through the filling member 50. After the positioning member 20 enters the first positioning hole 11 under the guidance of the guide member 30, the guide member 30 is removed from the main body 10, and then the filling member 50 is filled into the second positioning hole 12. With such a setting, the bone can be better filled, and the instability of the filling structure caused by the gap in the second positioning hole 12 can be avoided, so as to further improve the filling stability of the filling structure. Specifically, the outer surface of the filling member 50 in this embodiment is adapted to the inner surface of the second positioning hole 12, so as to facilitate the filling member 50 to enter the second positioning hole 12.

[0042] Specifically, at least part of the filling member 50 is spaced from the inner wall of the second positioning hole 12 to form a receiving gap to receive bone debris. With such a configuration, accommodating bone debris through the receiving gap facilitates bone ingrowth, so as to facilitate the integration of human bone and the bone filling prosthesis.

[0043] In order to improve the stability of the connection, the bone filling prosthesis in this embodiment further includes a connecting member 60, which includes a first connecting segment 61 and a second connecting segment 62. The first connecting segment 61 and the second connecting segment 62 are connected, the first connecting segment 61 is used to connect with the main body 10, and the second connecting segment 62 is used to connect with the filling member 50, so that the main body 10 and the filling member 50 are connected through the connecting member 60. With such a setting, the connection stability between the main body 10 and the filling member 50 can be improved, and the position deviation of the filling member 50 and the main body 10 after long-term implantation can be avoided, thereby causing the filling to be unstable.

[0044] Specifically, the first connecting section 61 in this embodiment is a first threaded section, the second connecting section 62 is a second threaded section, and a first threaded hole adapted to the first threaded section is provided on the main body 10, and specifically, the first threaded hole is located at the top of the second positioning hole 12. A second threaded hole adapted to the second threaded section is provided on the filling member 50, and the second threaded hole is located at the top of the filling member 50. The first connecting section 61 is threadedly connected to the main body 10, and the second connecting section 62 is threadedly connected to the filling member 50. The threaded connection method has a simple structure and is easy to manufacture. At the same time, the connection is reliable, which improves the connection stability of the main body 10 and the filling member 50, and improves the filling stability of the bone filling prosthesis. Specifically, the connecting member 60 in this embodiment can be a connecting bolt.

[0045] In order to facilitate the positioning of the filling piece 50, the filling piece 50 in this embodiment includes a filling section 51 and a positioning section 52. The positioning section 52 is connected to the filling section 51. The filling section 51 is used to be set in the second positioning hole 12. The outer edge of the positioning section 52 protrudes from the outer edge of the filling section 51 so as to be abutted and positioned with the main body 10 through the positioning section 52.

[0046] Specifically, a through hole 14 is provided on the main body 10 in this embodiment. The through hole 14 is spaced apart from the first positioning hole 11 , and the through hole 14 is communicated with the second positioning hole 12 , so that bone debris can fall into the second positioning hole 12 through the through hole 14 .

[0047] When using the bone filling prosthesis provided in this embodiment, first, the main body 10 is implanted into the designated position, and then the screw guide (the screw guide is the guide member 30) is inserted. When the positioning pin of the screw guide (the positioning pin is the fourth positioning structure 32) is matched with the positioning groove of the main body 10, the guide channel 31 of the screw guide is aligned with the second positioning hole 12 of the main body 10, and then the screw at the corresponding position is implanted according to clinical needs. After the screw is implanted, the screw guide is taken out, and then the connecting bolt is screwed into the first threaded hole of the main body 10, and then the bone chips are filled into the second positioning hole 12 of the prosthesis body (the prosthesis body here is the main body 10), and finally, the inner hole plug (the inner hole plug here is the filling member 50) is matched with the connecting bolt.

[0048] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: this embodiment is a screw-fixed bone filling prosthesis, and the structure is a modular design; when the screw guide locating pin is inserted into the second locating hole of the prosthesis body, the guide channel is aligned with the first locating hole of the prosthesis body, and the screws are implanted in the corresponding positions according to clinical needs to achieve the purpose of self-fixation; the inner hole plug and the prosthesis body are connected together by connecting bolts, and bone chips are filled between the outer surface of the inner hole plug and the inner surface of the prosthesis body; the outer surface of the prosthesis body is a porous structure, which can be interconnected with the bone chips filled in the second locating hole of the prosthesis, which is more conducive to bone ingrowth.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bone filling prosthesis, characterized in that: include: A main body (10), the main body (10) being used for filling human bone, the main body (10) being provided with a first positioning hole (11) and a second positioning hole (12), the first positioning hole (11) being in communication with the second positioning hole (12); A positioning member (20), wherein the first positioning hole (11) is used to position the positioning member (20), and at least a portion of the positioning member (20) is arranged to protrude from the outer wall of the main body (10) so as to be positioned between the positioning member (20) and the bone; a guide member (30) detachably disposed in the second positioning hole (12); a guide channel (31) is disposed on the guide member (30); the guide channel (31) is used to communicate with the first positioning hole (11), so that the positioning member (20) enters the first positioning hole (11) after passing through the guide channel (31); a filling piece (50), at least a portion of the filling piece (50) being arranged in the second positioning hole (12) so as to fill the second positioning hole (12) through the filling piece (50); At least a portion of the filling member (50) is spaced apart from the inner hole wall of the second positioning hole (12) to form an accommodating gap, so as to accommodate bone debris through the accommodating gap; The bone filling prosthesis also includes a connecting member (60), and the connecting member (60) includes a first connecting segment (61) and a second connecting segment (62), wherein the first connecting segment (61) and the second connecting segment (62) are connected, wherein the first connecting segment (61) is used to connect to the main body (10), and the second connecting segment (62) is used to connect to the filling member (50), so that the main body (10) and the filling member (50) are connected through the connecting member (60).

2. The bone filling prosthesis according to claim 1, characterized in that: An extension direction of the first positioning hole (11) and an extension direction of the second positioning hole (12) are arranged at a first predetermined angle.

3. The bone filling prosthesis according to claim 2, characterized in that: The first positioning hole (11) comprises a first hole section (111) and a second hole section (112); the first hole section (111) and the second hole section (112) are both cylindrical hole sections; the hole diameter of the first hole section (111) is larger than the hole diameter of the second hole section (112), so that a positioning step is formed at the connection between the first hole section (111) and the second hole section (112), so that the positioning member (20) can be abutted and positioned by the positioning step.

4. The bone filling prosthesis according to claim 1, characterized in that: The guide channel (31) comprises a first connecting channel (311) and a second connecting channel (312); the first connecting channel (311) is connected to the second connecting channel (312); the second connecting channel (312) is located at an end of the first connecting channel (311) close to the first positioning hole (11); and an extension direction of the first connecting channel (311) and an extension direction of the second connecting channel (312) are arranged at a second predetermined angle.

5. The bone filling prosthesis according to claim 1, characterized in that: The bone filling prosthesis also includes: A driving member (40), at least a portion of which is movably disposed in the guide channel (31), so as to push the positioning member (20) through the guide channel (31) to move into the first positioning hole (11).

6. The bone filling prosthesis according to claim 5, characterized in that: The positioning member (20) is provided with a first positioning structure (21), and the driving member (40) comprises: An operating unit (41); A pushing portion (42) is connected to the operating portion (41), and the pushing portion (42) is used to be movably arranged in the guide channel (31). The pushing portion (42) is provided with a second positioning structure that cooperates with the first positioning structure (21). The first positioning structure (21) cooperates with the second positioning structure so that the pushing portion (42) pushes the positioning member (20) to move into the first positioning hole (11).

7. The bone filling prosthesis according to claim 1, characterized in that: The main body (10) is provided with a third positioning structure, and the guide member (30) is provided with a fourth positioning structure (32) that cooperates with the third positioning structure. The third positioning structure cooperates with the fourth positioning structure (32) so that the outlet of the guide channel (31) is located at a position connected to the first positioning hole (11).

8. The bone filling prosthesis according to claim 7, characterized in that: The third positioning structure is a positioning groove, and the fourth positioning structure (32) is a positioning protrusion, which is arranged in the positioning groove to position the guide member (30) at a position where the outlet of the guide channel (31) is connected to the first positioning hole (11).

9. The bone filling prosthesis according to claim 1, characterized in that: The first connecting section (61) is a first threaded section, the second connecting section (62) is a second threaded section, the main body (10) is provided with a first threaded hole adapted to the first threaded section, and the filling piece (50) is provided with a second threaded hole adapted to the second threaded section, so that the first connecting section (61) is threadedly connected to the main body (10), and the second connecting section (62) is threadedly connected to the filling piece (50).

10. The bone filling prosthesis according to claim 1, characterized in that: The filling piece (50) comprises a filling section (51) and a positioning section (52), wherein the positioning section (52) is connected to the filling section (51), and the filling section (51) is used to be arranged in the second positioning hole (12), and the outer edge of the positioning section (52) is arranged to protrude from the outer edge of the filling section (51) so as to be abutted and positioned with the main body (10) through the positioning section (52).

11. The bone filling prosthesis according to claim 1, characterized in that: The main body (10) is provided with a through hole (14), the through hole (14) is spaced apart from the first positioning hole (11), and the through hole (14) is connected to the second positioning hole (12), so that bone debris can fall into the second positioning hole (12) through the through hole (14).

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