Bone filling prosthesis

Abstract

The present invention provides a bone filling prosthesis, which includes a prosthesis structure, a length adjustment structure and a peripheral surface adjustment structure. The prosthesis structure is connected to the length adjustment structure so that the length of the bone filling prosthesis can be adjusted by the length adjustment structure acting on the prosthesis structure; at least part of the prosthesis structure is connected to the peripheral surface adjustment structure so that the peripheral surface of at least part of the bone filling prosthesis can be adjusted by the peripheral surface adjustment structure acting on at least part of the prosthesis structure, so as to adjust the contour size of the bone filling prosthesis according to actual needs, thereby enabling the bone filling prosthesis to match bone defects with different cavity sizes and different cavity shapes; it can be seen that the present bone filling prosthesis solves the problem in the prior art that the bone filling prosthesis cannot adjust its own contour size.

Description

Technical Field

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

[0002] Bone defects are a common problem for orthopedic surgeons. Currently, bone defect filling prostheses are divided into one-piece and modular types. One-piece prostheses only physically fill the defect and do not have an adjustment function; modular prostheses are two or more components that are used together to achieve good initial stability.

[0003] However, in clinical use, the sizes of bone defect cavities vary, and the filling prosthesis needs to match the bone defect cavity, that is, the size of the filling prosthesis needs to be adjusted so that its contour size matches the bone defect cavity.

[0004] The existing modular prosthesis cannot automatically adjust the size of the filling prosthesis according to the cavity of the bone defect, which causes great inconvenience to the clinical application of the modular filling prosthesis. Summary of the invention

[0005] The main purpose of the present invention is to provide a bone filling prosthesis to solve the problem that the bone filling prosthesis in the prior art cannot adjust its own contour size.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a bone-filling prosthesis, which includes: a prosthesis structure; a length adjustment structure, the prosthesis structure is connected to the length adjustment structure so that the length of the bone-filling prosthesis can be adjusted by the length adjustment structure acting on the prosthesis structure; a peripheral surface adjustment structure, at least a portion of the prosthesis structure is connected to the peripheral surface adjustment structure so that at least a portion of the peripheral surface of the bone-filling prosthesis can be adjusted by the peripheral surface adjustment structure acting on at least a portion of the prosthesis structure.

[0007] Furthermore, the prosthesis structure includes a first prosthesis block and a second prosthesis block; the bone filling prosthesis also includes: a first elastic member, the first elastic member is arranged between the first prosthesis block and the second prosthesis block, so that the first prosthesis block and the second prosthesis block are connected through the first elastic member; wherein at least a part of the length adjustment structure is telescopically arranged between the first prosthesis block and the second prosthesis block, so as to adjust the length of the bone filling prosthesis by adjusting the distance between the first prosthesis block and the second prosthesis block; the peripheral surface adjustment structure is connected to the second prosthesis block, so as to change the peripheral surface of the second prosthesis block by acting on the second prosthesis block through the peripheral surface adjustment structure.

[0008] Furthermore, the second prosthesis assembly is composed of multiple plates spliced ​​together to form a columnar structure, two adjacent plates are connected by a third elastic member, and the multiple plates form a accommodating channel; wherein, at least a portion of the peripheral surface adjustment structure is movably arranged in the accommodating channel, and the peripheral surface adjustment structure is transmission-connected to the second prosthesis assembly so as to drive each plate to move in a direction perpendicular to the extension direction of the second prosthesis assembly through the peripheral surface adjustment structure to change the peripheral surface of the second prosthesis assembly.

[0009] Furthermore, the peripheral surface adjustment structure includes an adjustment component, which includes: an adjustment body, which is a columnar structure, and the cross-sectional area of ​​the adjustment body gradually decreases or increases along the direction from one end of the adjustment body to the other end of the adjustment body; wherein the cross-sectional area of ​​the adjustment body is the area of ​​the cross section of the adjustment body perpendicular to the extension direction of the adjustment body; wherein the adjustment body is reciprocatably arranged in the accommodating channel along its extension direction, and a plurality of plates are connected to the adjustment body, so that when the adjustment body reciprocates along its extension direction, each plate is driven by the adjustment body to move in a direction perpendicular to the extension direction of the second prosthesis block.

[0010] Furthermore, the adjusting body has a first adjusting portion, the second prosthesis block has a second adjusting portion, and the first adjusting portion and the second adjusting portion cooperate with each other so that the adjusting body can reciprocate along the extending direction of the adjusting body.

[0011] Furthermore, the peripheral surface adjustment structure also includes a second driving device, which is arranged in the accommodating channel. The second driving device includes a second transmission member, which acts on the adjustment body to make the adjustment body move relative to the second prosthesis block to achieve mutual cooperation between the first adjustment part and the second adjustment part.

[0012] Furthermore, the second transmission member is a second rotating shaft, so that the second rotating shaft drives the adjusting body to rotate; the adjusting assembly also includes: a fourth elastic member, the second rotating shaft has an adjustment groove, the fourth elastic member is arranged in the adjustment groove and is connected to the second rotating shaft; a second connecting member, at least a part of the second connecting member is arranged in the adjustment groove and is connected to the fourth elastic member, the adjusting body is connected to the second connecting member, so that when the adjusting body reciprocates along the extension direction of the adjusting body, the second connecting member moves along with the adjusting body.

[0013] Furthermore, the second connecting member has a third transmission plane, and the inner wall surface of the adjusting groove includes a fourth transmission plane, and the third transmission plane is in close contact with the fourth transmission plane, so that the second rotating shaft drives the adjusting body to rotate through the second connecting member.

[0014] Furthermore, the first adjustment part is a second external thread, the second external thread is arranged on the outer peripheral wall of the adjustment body, and the second adjustment part is a second internal thread matching the second external thread, the second internal thread is arranged on the inner wall of the accommodating channel, and the adjustment body is screwed to each plate body through the mutual cooperation of the second external thread and the second internal thread.

[0015] Furthermore, the second driving device also includes a second driving component, the second driving component is a second electric motor, the second transmission member is connected to the output shaft of the second electric motor, and the second driving component is movably connected to the second prosthesis assembly.

[0016] Furthermore, an elastic bracket is provided between the second driving component and at least one of the plurality of plate bodies, so that the second driving component and the plate body are movably connected through the elastic bracket.

[0017] Furthermore, the length adjustment structure includes a first driving device and a telescopic assembly, the first driving device is used to connect to the first prosthesis component, and the telescopic assembly is used to connect to the second prosthesis component, so that the second prosthesis component can be moved closer to or away from the first prosthesis component by driving the telescopic assembly along the extension direction of the bone filling prosthesis through the first driving device.

[0018] Furthermore, the telescopic assembly includes a telescopic body and a supporting part, wherein the supporting part is arranged on the telescopic body and is used to connect with the second prosthesis block; the telescopic body has a first matching part, and the first prosthesis block has a second matching part, so that the telescopic body can drive the supporting part to move reciprocatingly along the extension direction of the bone filling prosthesis through the mutual cooperation between the first matching part and the second matching part.

[0019] Furthermore, the first driving device includes a first transmission member, and the first transmission member acts on the telescopic body to make the telescopic body move relative to the first prosthesis assembly to achieve mutual cooperation between the first matching portion and the second matching portion.

[0020] Furthermore, the first prosthesis assembly has an adjustment channel, the first drive device is arranged in the adjustment channel, at least part of the telescopic body is located in the adjustment channel, the first matching part is arranged on the outer peripheral wall of the telescopic body, and the second matching part is arranged on the inner wall of the adjustment channel.

[0021] Furthermore, the first transmission member is a first rotating shaft, so that the first rotating shaft drives the telescopic body to rotate; the telescopic assembly also includes: a second elastic member, the first rotating shaft has an installation groove, the second elastic member is arranged in the installation groove and is connected to the first rotating shaft; a first connecting member, at least a part of the first connecting member is arranged in the installation groove and is connected to the second elastic member, the telescopic body is connected to the first connecting member, so that when the telescopic body reciprocates along the extension direction of the bone filling prosthesis, the first connecting member moves with the telescopic body.

[0022] Furthermore, the first connecting member has a first transmission plane, and the inner wall surface of the mounting groove includes a second transmission plane, and the first transmission plane is in close contact with the second transmission plane, so that the first rotating shaft drives the telescopic body to rotate through the first connecting member.

[0023] Furthermore, the first matching portion is a first external thread, and the second matching portion is a first internal thread matching the first external thread, and the telescopic body is threadedly connected to the first prosthesis assembly through the mutual matching of the first external thread and the first internal thread.

[0024] Furthermore, the first driving device also includes a driving component, which is a first motor. The first motor is fixed to the inner wall of the adjustment channel, and the first transmission member is connected to the output shaft of the first motor.

[0025] Furthermore, the second prosthesis block has an insertion groove, and at least a part of the support portion is rotatably inserted in the insertion groove, so that when the support portion moves along with the telescopic body in a direction away from the first prosthesis block, it pushes the second prosthesis block to move synchronously.

[0026] By applying the technical solution of the present invention, the bone-filling prosthesis includes a prosthesis structure, a length adjustment structure and a peripheral surface adjustment structure; the prosthesis structure is connected to the length adjustment structure so that the length of the bone-filling prosthesis can be adjusted by the length adjustment structure acting on the prosthesis structure; at least part of the prosthesis structure is connected to the peripheral surface adjustment structure so that at least part of the peripheral surface of the bone-filling prosthesis can be adjusted by the peripheral surface adjustment structure acting on at least part of the prosthesis structure. By providing a peripheral surface adjustment structure and a length adjustment structure, and making the length adjustment structure act on the prosthesis structure to adjust the length of the bone-filled prosthesis, and making the peripheral surface adjustment structure act on at least part of the prosthesis structure to adjust at least part of the peripheral surface of the bone-filled prosthesis, the contour size of the bone-filled prosthesis can be adjusted according to actual needs, so that the bone-filled prosthesis can be matched with bone defects of different cavity sizes and different cavity shapes; it can be seen that the present bone-filled prosthesis solves the problem in the prior art that the bone-filled prosthesis cannot adjust its own contour size; the contour size of the bone-filled prosthesis is adjusted to make the peripheral wall of the bone-filled prosthesis fit and contact with the corresponding bone defect cavity wall, so that the bone-filled prosthesis can be more stably implanted in the corresponding bone defect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 A schematic diagram showing the external structure of an embodiment of a bone filling prosthesis according to the present invention; and

[0029] Figure 2 Shows Figure 1 Schematic diagram of the internal structure of the bone-filled prosthesis.

[0030] The above drawings include the following reference numerals:

[0031] 60. Bone-filled prosthesis;

[0032] 10. first prosthesis assembly; 12. mounting cavity; 13. adjustment channel;

[0033] 30. Length adjustment structure; 31. First driving device; 311. First rotating shaft; 312. Mounting slot; 313. First motor; 32. Telescopic assembly; 321. Telescopic body; 322. Supporting part; 323. Second elastic member; 324. First connecting member; 325. First external thread; 326. First fixing member;

[0034] 40. first elastic member; 41. motor support frame; 42. third elastic member; 43. elastic bracket;

[0035] 51. first processor; 52. first power supply; 53. first data line; 54. second processor; 56. second power supply; 57. second data line;

[0036] 20. second prosthesis assembly block; 21. insertion groove; 24. plate body; 25. accommodation channel; 27. assembly cavity;

[0037] 80. Peripheral surface adjustment structure; 81. Second driving device; 811. Second rotating shaft; 812. Adjustment slot; 813. Second motor; 82. Adjustment assembly; 821. Adjustment body; 823. Fourth elastic member; 824. Second connecting member; 825. Second external thread; 826. Second fixing member. DETAILED DESCRIPTION

[0038] 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.

[0039] The present invention provides a bone filling prosthesis 60, please refer to Figure 1 and Figure 2 The bone-filling prosthesis 60 includes a prosthesis structure, a length adjustment structure 30 and a peripheral surface adjustment structure 80; the prosthesis structure is connected to the length adjustment structure 30 so that the length of the bone-filling prosthesis 60 can be adjusted by the length adjustment structure 30 acting on the prosthesis structure; at least part of the prosthesis structure is connected to the peripheral surface adjustment structure 80 so that at least part of the peripheral surface of the bone-filling prosthesis 60 can be adjusted by the peripheral surface adjustment structure 80 acting on at least part of the prosthesis structure.

[0040] In the bone filling prosthesis 60 of the present invention, a peripheral surface adjustment structure 80 and a length adjustment structure 30 are provided, and the length adjustment structure 30 is made to act on the prosthesis structure to adjust the length of the bone filling prosthesis 60, and the peripheral surface adjustment structure 80 is made to act on at least part of the prosthesis structure to adjust at least part of the peripheral surface of the bone filling prosthesis 60, so as to adjust the contour size of the bone filling prosthesis 60 according to actual needs, and then the bone filling prosthesis 60 can be matched with bone defects of different cavity sizes and different cavity shapes; it can be seen that the present bone filling prosthesis 60 solves the problem in the prior art that the bone filling prosthesis cannot adjust its own contour size; the contour size of the bone filling prosthesis 60 is adjusted to make the peripheral wall of the bone filling prosthesis 60 fit in contact with the corresponding bone defect cavity wall, so that the bone filling prosthesis 60 can be more stably implanted in the corresponding bone defect.

[0041] It should be noted that the “length of the bone filling prosthesis 60 ” referred to herein refers to the length of the bone filling prosthesis 60 along its extending direction.

[0042] Specifically, the prosthesis structure includes a first prosthesis block 10 and a second prosthesis block 20; the bone filling prosthesis also includes a first elastic member 40, which is arranged between the first prosthesis block 10 and the second prosthesis block 20, so that the first prosthesis block 10 and the second prosthesis block 20 are connected through the first elastic member 40; wherein, at least part of the length adjustment structure 30 is telescopically arranged between the first prosthesis block 10 and the second prosthesis block 20, so as to adjust the length of the bone filling prosthesis by adjusting the distance between the first prosthesis block 10 and the second prosthesis block 20, thereby making the length of the bone filling prosthesis 60 match the cavity length of the corresponding bone defect; the peripheral surface adjustment structure 80 is connected to the second prosthesis block 20, so as to change the peripheral surface of the second prosthesis block 20 by acting on the second prosthesis block 20 through the peripheral surface adjustment structure 80, thereby playing a role in adjusting at least part of the peripheral surface of the bone filling prosthesis 60.

[0043] In order to achieve the coordination between the second prosthesis assembly 20 and the peripheral surface adjustment structure 80, the second prosthesis assembly 20 is spliced ​​by a plurality of plates 24 to form a columnar structure, and two adjacent plates 24 are connected by a third elastic member 42, and the plurality of plates 24 surround an accommodating channel 25; at least a portion of the peripheral surface adjustment structure 80 is movably disposed in the accommodating channel 25, and the peripheral surface adjustment structure 80 is transmission-connected to the second prosthesis assembly 20 so as to drive each plate 24 to move in a direction perpendicular to the extension direction of the second prosthesis assembly 20 through the peripheral surface adjustment structure 80, so as to change the peripheral surface of the second prosthesis assembly 20.

[0044] In order to enable the peripheral surface adjustment structure 80 to drive each plate body 24 to move in a direction perpendicular to the extension direction of the second prosthesis assembly 20, the peripheral surface adjustment structure 80 includes an adjustment component 82, and the adjustment component 82 includes an adjustment body 821. The adjustment body 821 is a columnar structure, and the cross-sectional area of ​​the adjustment body 821 gradually decreases or increases along the direction from one end of the adjustment body 821 to the other end of the adjustment body 821; wherein the cross-sectional area of ​​the adjustment body 821 is the area of ​​the cross section of the adjustment body 821 perpendicular to the extension direction of the adjustment body 821; wherein the adjustment body 821 is reciprocatably arranged in the accommodating channel 25 along its extension direction, and multiple plates 24 are all connected to the adjustment body 821, so that when the adjustment body 821 reciprocates along its extension direction, the adjustment body 821 drives each plate body 24 to move in a direction perpendicular to the extension direction of the second prosthesis assembly 20. That is, during the reciprocating motion of the adjusting body 821 along its extension direction, when the cross-sectional area of ​​the adjusting body 821 is larger than the cross-sectional area of ​​the cavity of the accommodating channel 25 at the corresponding position thereof, the adjusting body 821 can generate a thrust on each plate in a direction perpendicular to the extension direction of the second prosthesis assembly 20, so as to push each plate 24 to move in a direction away from the adjusting body 821, thereby enlarging the outer peripheral surface of the second prosthesis assembly 20; when the cross-sectional area of ​​the adjusting body 821 is smaller than the cross-sectional area of ​​the cavity of the accommodating channel 25 at the corresponding position thereof, under the action of the third elastic member 42, each plate 24 can move in a direction close to the adjusting body 821, so as to reduce the outer peripheral surface of the second prosthesis assembly 20; wherein, the cross-sectional area of ​​the cavity of the accommodating channel 25 is the area of ​​the cross section of the cavity perpendicular to the extension direction of the accommodating channel 25.

[0045] During the specific implementation process, along the direction from the top to the bottom of the second prosthesis assembly 20, the cross-sectional area of ​​the adjustment body 821 gradually increases, and the cross-sectional area of ​​the partial cavity of the accommodating channel 25 for accommodating the adjustment body 821 gradually increases. Along the extension direction of the accommodating channel 25 or the extension direction of the adjustment body 821, the length of the partial cavity for accommodating the adjustment body 821 is greater than the length of the adjustment body 821, so that the partial cavity of the accommodating channel 25 forms a movement channel for the adjustment body 821; when the adjustment body 821 moves toward the top of the second prosthesis assembly 20, the cross-sectional area of ​​the adjustment body 821 will be greater than the cross-sectional area of ​​the cavity of the accommodating channel 25 at the corresponding position, thereby increasing the outer peripheral surface of the second prosthesis assembly 20; when the adjustment body 821 moves toward the bottom of the second prosthesis assembly 20, the cross-sectional area of ​​the adjustment body 821 will be less than the cross-sectional area of ​​the cavity of the accommodating channel 25 at the corresponding position, thereby decreasing the outer peripheral surface of the second prosthesis assembly 20.

[0046] Specifically, the adjustment body 821 has a first adjustment part, and the second prosthesis block 20 has a second adjustment part. The first adjustment part and the second adjustment part cooperate with each other so that the adjustment body 821 can move reciprocatingly along the extension direction of the adjustment body 821, that is, under the mutual cooperation of the first adjustment part and the second adjustment part, the adjustment body 821 can move reciprocatingly along the extension direction of the adjustment body 821.

[0047] Specifically, the peripheral surface adjustment structure 80 also includes a second driving device 81, which is arranged in the accommodating channel 25. The second driving device 81 includes a second transmission member, and the second transmission member acts on the adjustment body 821 to make the adjustment body 821 move relative to the second prosthesis assembly 20 to achieve mutual cooperation between the first adjustment part and the second adjustment part.

[0048] In order to realize the cooperation between the second transmission member and the adjustment body 821, the second transmission member is the second rotating shaft 811, so that the second rotating shaft 811 drives the adjustment body 821 to rotate; that is, during the rotation of the adjustment body 821, the adjustment body 821 moves in its extension direction through the mutual cooperation of the first adjustment part and the second adjustment part; the adjustment assembly 82 also includes a fourth elastic member 823 and a second connecting member 824, the second rotation shaft 811 has an adjustment groove 812, the fourth elastic member 823 is arranged in the adjustment groove 812 and connected to the second rotation shaft 811; at least part of the second connecting member 824 is arranged in the adjustment groove 812 and connected to the fourth elastic member 823, and the adjustment body 821 is connected to the second connecting member 824, so that when the adjustment body 821 reciprocates along the extension direction of the adjustment body 821, the second connecting member 824 moves with the adjustment body 821; that is, under the action of the fourth elastic member 823, the adjustment body 821 and the second connecting member 824 can move relative to the second rotating shaft 811 in the extension direction of the adjustment body 821.

[0049] In order to enable the second rotating shaft 811 to stably drive the adjusting body 821 to rotate, the second connecting member 824 has a third transmission plane, and the inner wall surface of the adjusting groove 812 includes a fourth transmission plane. The third transmission plane is in close contact with the fourth transmission plane to generate friction between the second rotating shaft 811 and the second connecting member 824. Under the action of the friction force, the second rotating shaft 811 drives the second connecting member 824 to rotate, thereby driving the adjusting body 821 to rotate.

[0050] In the specific implementation process, there are multiple third transmission planes, which are sequentially arranged along the outer peripheral wall of the second connecting member 824, and there are multiple fourth transmission planes, which are sequentially arranged along the inner wall of the adjustment groove 812, and each fourth transmission plane is arranged in one-to-one correspondence with the multiple third transmission planes. Optionally, the second connecting member 824 is a multi-prism structure.

[0051] In this embodiment, the first adjustment portion is a second external thread 825, which is disposed on the outer peripheral wall of the adjustment body 821, and the second adjustment portion is a second internal thread matching the second external thread 825, which is disposed on the inner wall of the accommodating channel 25. The adjustment body 821 is screwed to each plate 24 through the cooperation between the second external thread 825 and the second internal thread. That is, under the cooperation between the second external thread 825 and the second internal thread, when the adjustment body 821 rotates, the adjustment body 821 can move in its extension direction. Optionally, along the extension direction of the second prosthesis assembly 20, the length of the second internal thread is greater than the length of the second external thread 825.

[0052] During the specific implementation, the adjustment assembly 82 further includes a second fixing member 826 , which is disposed between the second connecting member 824 and the adjustment body 821 , so that the second connecting member 824 and the adjustment body 821 are connected via the second fixing member 826 .

[0053] In order to make the overall structure of the bone filling prosthesis 60 more compact, the outer peripheral wall of the second fixing member 826 is made flush with the outer peripheral wall of the second transmission member.

[0054] During the specific implementation process, the second driving device 81 also includes a second driving component, which is a second motor 813. The second transmission member is connected to the output shaft of the second motor 813 so that the second motor 813 drives the second transmission member to rotate through its output shaft; the second driving component is movably connected to the second prosthesis assembly 20.

[0055] Alternatively, the following design may be used to achieve reciprocating movement of the adjustment body 821 along its extension direction, wherein the second driving component is a second linear motor, and the second transmission member is connected to the output shaft of the second linear motor, so that the second linear motor drives the second transmission member to reciprocate along the axial direction of the output shaft through its output shaft, thereby enabling the second transmission member to drive the adjustment body 821 to reciprocate along the axial direction of the output shaft of the second linear motor; further, the axial direction of the output shaft of the second linear motor is made to be the same direction as the extension direction of the second prosthesis assembly 20, so that the second prosthesis assembly 20 can reciprocate along its extension direction.

[0056] During the specific implementation process, the first adjustment part is a third sliding surface, which is arranged on the outer peripheral wall of the adjustment body 821; the second adjustment part is a fourth sliding surface, which is arranged on the inner wall of the accommodating channel 25; the third sliding surface and the fourth sliding surface are slidably contacted to enable the adjustment body 821 to slide relative to the second prosthesis assembly 20.

[0057] In order to realize the assembly between the second driving component and the second prosthesis assembly 20, an elastic bracket 43 is arranged between the second driving component and at least one of the plurality of plates 24, so that the second driving component and the plate 24 are movably connected through the elastic bracket 43, that is, the plate connected to the second driving component can move relative to the second driving component in a direction perpendicular to the extension direction of the second prosthesis assembly 20. Optionally, the second driving component is arranged in the accommodating channel 25. Optionally, the elastic bracket 43 includes at least one elastic rod, one end of each elastic rod is fixed to the inner wall of the corresponding plate 24, and the other end of each elastic rod is used to connect with the second driving component; or, the elastic bracket 43 includes at least one telescopic rod, one end of each telescopic rod is fixed to the inner wall of the corresponding plate 24, and the other end of each telescopic rod is used to connect with the second driving component; wherein the inner wall of the plate 24 is the wall surface of the plate 24 facing the accommodating channel 25.

[0058] Specifically, the bone filling prosthesis 60 further includes a second stress sensor and a second processor 54, the second stress sensor is arranged on the outer wall surface of the second prosthesis block 20 to detect the pressure between the outer wall surface of the second prosthesis block 20 and the corresponding bone defect cavity wall; the second stress sensor and the second driving component are both connected to the second processor 54, so that the second stress sensor transmits the detected real-time pressure value to the second processor 54, and the second processor 54 receives the real-time pressure value and controls the operation state of the second driving component according to the received real-time pressure value. Optionally, the second processor 54 and the second driving component are connected via a second data line 57.

[0059] During the specific implementation process, when the real-time pressure value received by the second processor 54 is less than the preset pressure value, the second processor 54 controls the second driving component to start and run; when the real-time pressure value received by the second processor 54 is greater than or equal to the preset pressure value, the second processor 54 controls the second driving component to stop running. At this time, the outer peripheral wall of the second prosthesis assembly 20 is in contact with the corresponding bone defect cavity wall, thereby realizing the automation of the bone filling prosthesis 60 to adjust its outer peripheral surface.

[0060] In the specific implementation process, the bone filling prosthesis 60 also includes a second power supply 56, which is connected to the second processor 54 so that the second processor 54 is used to control the power on and off state of the second drive component. When the real-time pressure value received by the second processor 54 is less than the preset pressure value, the second processor 54 controls the second drive component and the second power supply 56 to be in the on state, thereby controlling the second drive component to start and run; when the real-time pressure value received by the second processor 54 is greater than or equal to the preset pressure value, the second processor 54 controls the second drive component and the second power supply 56 to be in the off state, thereby controlling the second drive component to stop running. Optionally, the second power supply 56 is connected to the second processor 54 via a second data line 57.

[0061] During the specific implementation, the second prosthesis assembly 20 further has an assembly cavity 27, and the second processor 54 and the second power supply 56 are both installed in the assembly cavity 27. Optionally, the assembly cavity 27 is provided on one of the plurality of plates 24, and the plate 24 is further provided with a third wire groove, and at least part of the second data line 57 is accommodated in the third wire groove, and the third wire groove is connected to the assembly cavity 27.

[0062] In the specific implementation process, the plurality of plates 24 are all arc-shaped plates, and the second prosthesis block 20 formed by splicing the plurality of arc-shaped plates is a cylindrical structure. When the second prosthesis block 20 is a cylindrical structure, adjusting the outer circumference of the second prosthesis block 20 also adjusts the diameter of the second prosthesis block 20.

[0063] In a specific implementation process, a plurality of third elastic members 42 are disposed between two adjacent plates 24 . The plurality of third elastic members 42 are arranged at intervals along the extension direction of the second prosthesis assembly 20 , which can further enhance the stability of the elastic connection between the two adjacent plates 24 .

[0064] In order to realize the assembly between the length adjustment structure 30 and the first prosthesis block 10 and the second prosthesis block 20 respectively, the length adjustment structure 30 includes a first driving device 31 and a telescopic assembly 32, the first driving device 31 is used to connect with the first prosthesis block 10, and the telescopic assembly 32 is used to connect with the second prosthesis block 20, so that the second prosthesis block 20 is close to or away from the first prosthesis block 10 by driving the telescopic assembly 32 along the extension direction of the bone filling prosthesis 60 by the first driving device 31; that is, when the first driving device 31 drives the telescopic assembly 32 to move in a direction away from the first driving device 31, the second prosthesis block 20 is close to the first prosthesis block 10, and the length of the bone filling prosthesis 60 gradually becomes shorter; when the first driving device 31 drives the telescopic assembly 32 to move in a direction close to the first driving device 31, the second prosthesis block 20 is close to the first prosthesis block 10, and the length of the bone filling prosthesis 60 gradually becomes longer.

[0065] Specifically, the telescopic assembly 32 includes a telescopic body 321 and a support portion 322, the support portion 322 is arranged on the telescopic body 321, and the support portion 322 is used to connect with the second prosthesis block 20; the telescopic body 321 has a first matching portion, and the first prosthesis block 10 has a second matching portion, so that the telescopic body 321 drives the support portion 322 to reciprocate along the extension direction of the bone filling prosthesis 60 through the mutual cooperation of the first matching portion and the second matching portion, that is, under the mutual cooperation of the first adjustment portion and the second adjustment portion, the telescopic body 321 can reciprocate along the extension direction of the bone filling prosthesis 60. Optionally, the telescopic body 321 and the support portion 322 are both columnar structures, and the extension direction of the telescopic body 321 and the extension direction of the support portion 322 are the same as the extension direction of the bone filling prosthesis 60.

[0066] During the specific implementation, the telescopic body 321 and the support portion 322 are an integrally formed structure to enhance the strength of the overall structure of the telescopic assembly 32 .

[0067] Specifically, the first driving device 31 includes a first transmission member, and the first transmission member acts on the telescopic body 321 to make the telescopic body 321 move relative to the first prosthesis assembly 10 to achieve mutual cooperation between the first matching portion and the second matching portion.

[0068] In order to enable the first matching part and the second matching part to cooperate with each other, the first prosthesis assembly 10 has an adjustment channel 13, the first driving device 31 is arranged in the adjustment channel 13, at least part of the telescopic body 321 is located in the adjustment channel 13, the first matching part is arranged on the outer peripheral wall of the telescopic body 321, and the second matching part is arranged on the inner wall of the adjustment channel 13.

[0069] In order to realize the cooperation between the first transmission member and the telescopic body 321, the first transmission member is the first rotating shaft 311, so that the first rotating shaft 311 drives the telescopic body 321 to rotate; that is, during the rotation of the telescopic body 321, the telescopic body 321 moves in the extension direction of the bone filling prosthesis 60 through the mutual cooperation of the first adjustment part and the second adjustment part; the telescopic assembly 32 also includes a second elastic member 323 and a first connecting member 324, the first rotating shaft 311 has an installation groove 312, and the second elastic member 323 is arranged at the installation groove 312. The first connecting piece 324 is installed in the installation groove 312 and connected to the first rotating shaft 311; at least a part of the first connecting piece 324 is arranged in the installation groove 312 and connected to the second elastic piece 323, and the telescopic body 321 is connected to the first connecting piece 324, so that when the telescopic body 321 reciprocates along the extension direction of the bone filling prosthesis 60, the first connecting piece 324 moves with the telescopic body 321; that is, under the action of the second elastic piece 323, the telescopic body 321 and the first connecting piece 324 can move relative to the first rotating shaft 311 in the extension direction of the bone filling prosthesis 60.

[0070] In order to enable the first rotating shaft 311 to stably drive the telescopic body 321 to rotate, the first connecting member 324 has a first transmission plane, and the inner wall surface of the installation groove 312 includes a second transmission plane. The first transmission plane is in close contact with the second transmission plane to generate friction between the first rotating shaft 311 and the first connecting member 324. Under the action of the friction force, the first rotating shaft 311 drives the first connecting member 324 to rotate, thereby driving the telescopic body 321 to rotate.

[0071] In the specific implementation process, there are multiple first transmission planes, which are sequentially arranged along the circumference of the first connecting member 324, and there are multiple second transmission planes, which are sequentially arranged along the inner wall of the mounting groove 312, and each second transmission plane is arranged one-to-one with the multiple first transmission planes. Optionally, the first connecting member 324 is a multi-prism structure.

[0072] In this embodiment, the first matching portion is a first external thread 325, and the second matching portion is a first internal thread matching the first external thread 325. The first external thread 325 and the first internal thread cooperate with each other to make the telescopic body 321 screwed to the first prosthesis assembly 10. That is, under the cooperation of the first external thread 325 and the first internal thread, when the telescopic body 321 rotates, the telescopic body 321 can move in the extension direction of the bone filling prosthesis 60. Optionally, along the extension direction of the bone filling prosthesis 60, the length of the first external thread 325 is greater than the length of the first internal thread.

[0073] During the specific implementation, the telescopic assembly 32 further includes a first fixing member 326 , which is disposed between the first connecting member 324 and the telescopic body 321 , so that the first connecting member 324 and the telescopic body 321 are connected through the first fixing member 326 .

[0074] In order to make the overall structure of the bone filling prosthesis 60 more compact, the outer peripheral wall of the first fixing member 326 is flush with the outer peripheral wall of the first transmission member.

[0075] During the specific implementation process, the first driving device 31 also includes a first driving component, which is a first motor 313. The first motor 313 is fixed on the inner wall of the adjustment channel 13, and the first transmission member is connected to the output shaft of the first motor 313 so that the first motor 313 drives the first transmission member to rotate through its output shaft.

[0076] Alternatively, the following design can be made to achieve reciprocating movement of the telescopic component 32 along the extension direction of the bone filling prosthesis 60, where the first driving component is a first linear motor, which is fixed to the inner wall of the adjustment channel 13, and the first transmission member is connected to the output shaft of the first linear motor, so that the first linear motor drives the first transmission member to reciprocate along the axial direction of the output shaft through its output shaft, and then the first transmission member drives the telescopic body 321 to reciprocate along the axial direction of the output shaft of the first linear motor; further, the axial direction of the output shaft of the first linear motor is made to be the same direction as the extension direction of the bone filling prosthesis 60, so that the telescopic body 321 can reciprocate along the extension direction of the bone filling prosthesis 60.

[0077] During the specific implementation process, the first matching portion is a first sliding surface, and the second matching portion is a second sliding surface. The first sliding surface and the second sliding surface are slidably contacted to enable the telescopic body 321 to slide relative to the first prosthesis assembly 10 .

[0078] Specifically, the bone filling prosthesis 60 further includes a first stress sensor and a first processor 51. The first stress sensor is disposed on the lower wall of the second prosthesis block 20 to detect the pressure between the lower wall of the second prosthesis block 20 and the corresponding bone defect cavity wall. The first stress sensor and the first driving component are both connected to the first processor 51, so that the first stress sensor transmits the detected real-time pressure value to the first processor 51, and the first processor 51 receives the real-time pressure value and controls the operation state of the first driving component according to the received real-time pressure value. Optionally, the first processor 51 is connected to the first driving component via a first data line 53.

[0079] During the specific implementation process, when the real-time pressure value received by the first processor 51 is less than the preset pressure value, the first processor 51 controls the first driving component to start and run; when the real-time pressure value received by the first processor 51 is greater than or equal to the preset pressure value, the first processor 51 controls the first driving component to stop running. At this time, at least a portion of the outer peripheral wall of the first prosthesis block 10 and at least a portion of the outer peripheral wall of the second prosthesis block 20 are in contact with the corresponding bone defect cavity wall, thereby realizing the automation of the bone filling prosthesis 60 to adjust its outer peripheral surface.

[0080] In the specific implementation process, the bone filling prosthesis also includes a first power supply 52, and the first power supply 52 is connected to the first processor 51, so that the first processor 51 is used to control the power on and off state of the first driving component. When the real-time pressure value received by the first processor 51 is less than the preset pressure value, the first processor 51 controls the first driving component and the first power supply 52 to be in the on state, thereby controlling the first driving component to start and run; when the real-time pressure value received by the first processor 51 is greater than or equal to the preset pressure value, the first processor 51 controls the first driving component and the first power supply 52 to be in the off state, thereby controlling the first driving component to stop running. Optionally, the first power supply 52 and the first processor 51 are connected via a first data line 53.

[0081] During the specific implementation process, the first prosthesis assembly 10 further has an installation cavity 12 , and the first processor 51 and the first power supply 52 are both installed in the installation cavity 12 .

[0082] In order to realize the assembly between the first driving component and the first prosthesis assembly 10, the bone filling prosthesis further includes a motor support frame 41, which is mounted on the inner wall of the adjustment channel 13, and the first driving component is arranged on the motor support frame 41. Optionally, the motor support frame 41 includes at least one support rod, one end of each support rod is fixed to the inner wall of the adjustment channel 13, and the other end of each support rod is used to connect with the first driving component.

[0083] In order to realize the assembly between the second prosthesis block 20 and the support portion 322, the second prosthesis block 20 has an insertion groove 21, and at least a portion of the support portion 322 is rotatably inserted into the insertion groove 21, so that when the support portion 322 moves along with the telescopic body 321 in a direction away from the first prosthesis block 10, it pushes the second prosthesis block 20 to move synchronously. Optionally, at least a portion of the lower end of the support portion 322 is rotatably inserted into the insertion groove 21.

[0084] During the process of the support portion 322 moving along with the telescopic body 321 in a direction away from the first prosthesis block 10, when the lower end of the support portion 322 abuts against the inner wall of the insertion groove 21, the support portion 322 can generate a thrust on the second prosthesis block 20, and under the action of the thrust, the support portion 322 pushes the second prosthesis block 20 to move synchronously in a direction away from the first prosthesis block 10; during the process of the support portion 322 moving along with the telescopic body 321 in a direction toward the first prosthesis block 10, under the elastic action of the first elastic member 40, the second prosthesis block 20 can move in a direction close to the first prosthesis block 10.

[0085] Furthermore, when the support portion 322 pushes the second prosthesis block 20 to move synchronously in a direction away from the first prosthesis block 10 , or when the second prosthesis block 20 moves toward the first prosthesis block 10 , the support portion 322 also rotates relative to the second prosthesis block 20 .

[0086] In order to better ensure the rotation effect of the support portion 322 relative to the second prosthesis block 20, the end of the support portion 322 facing the second prosthesis block 20 is a hemispherical structure; optionally, the bottom wall of the insertion groove 21 is a concave structure matching the hemispherical structure, that is, when the support portion 322 abuts against the bottom wall of the insertion groove 21, the end surface of the support portion 322 facing the second prosthesis block 20 can rotatably contact the bottom wall of the insertion groove 21. In the specific implementation process, the end surfaces of each plate body 24 facing the first prosthesis block 10 are all concave inward, and the concave parts of multiple plate bodies 24 together surround the insertion groove 21.

[0087] During the specific implementation, there are multiple first elastic members 40, and the multiple first elastic members 40 are arranged at intervals around the circumference of the first prosthesis block 10 or the second prosthesis block 20, which can further enhance the stability of the elastic connection between the first prosthesis block 10 and the second prosthesis block 20.

[0088] In the specific implementation process, the first prosthesis block 10 and the second prosthesis block 20 are both columnar structures; optionally, the first prosthesis block 10 and the second prosthesis block 20 are both cylindrical structures. Optionally, the first prosthesis block 10 and the second prosthesis block 20 are arranged opposite to each other.

[0089] In a specific implementation process, the first elastic member 40 , the second elastic member 323 , the third elastic member 42 and the fourth elastic member 823 are all springs or elastic bands.

[0090] During the specific implementation process, the first prosthesis assembly 10 also has a first wire groove, which is connected to the installation cavity 12; a second wire groove is provided on one of the multiple plates 24 of the second prosthesis assembly 20, and both the first wire groove and the second wire groove are used to accommodate the first data line 53.

[0091] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0092] In the bone-filling prosthesis 60 of the present invention, the bone-filling prosthesis 60 includes a prosthesis structure, a length adjustment structure 30 and a peripheral surface adjustment structure 80; the prosthesis structure is connected to the length adjustment structure 30 so that the length of the bone-filling prosthesis 60 can be adjusted by the length adjustment structure 30 acting on the prosthesis structure; at least part of the prosthesis structure is connected to the peripheral surface adjustment structure 80 so that at least part of the peripheral surface of the bone-filling prosthesis 60 can be adjusted by the peripheral surface adjustment structure 80 acting on at least part of the prosthesis structure. By providing a peripheral surface adjustment structure 80 and a length adjustment structure 30, and making the length adjustment structure 30 act on the prosthesis structure to adjust the length of the bone filling prosthesis 60, and making the peripheral surface adjustment structure 80 act on at least part of the prosthesis structure to adjust at least part of the peripheral surface of the bone filling prosthesis 60, the contour size of the bone filling prosthesis 60 can be adjusted according to actual needs, so that the bone filling prosthesis 60 can be matched with bone defects of different cavity sizes and different cavity shapes; it can be seen that the present bone filling prosthesis 60 solves the problem in the prior art that the bone filling prosthesis cannot adjust its own contour size; the contour size of the bone filling prosthesis 60 is adjusted to make the peripheral wall of the bone filling prosthesis 60 fit in contact with the corresponding bone defect cavity wall, so that the bone filling prosthesis 60 can be more stably implanted in the corresponding bone defect.

[0093] 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.

[0094] 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.

[0095] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0096] 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 prosthesis structure, comprising a first prosthesis component (10) and a second prosthesis component (20); a first elastic member (40), the first elastic member (40) being arranged between the first prosthesis block (10) and the second prosthesis block (20), so that the first prosthesis block (10) and the second prosthesis block (20) are connected via the first elastic member (40); a length adjustment structure (30), the prosthesis structure being connected to the length adjustment structure (30) so as to adjust the length of the bone filling prosthesis by the length adjustment structure (30) acting on the prosthesis structure; at least a portion of the length adjustment structure (30) being telescopically arranged between the first prosthesis component block (10) and the second prosthesis component block (20) so as to adjust the length of the bone filling prosthesis by adjusting the distance between the first prosthesis component block (10) and the second prosthesis component block (20); a peripheral surface adjustment structure (80), wherein at least a portion of the prosthesis structure is connected to the peripheral surface adjustment structure (80), so that the peripheral surface of at least a portion of the bone filling prosthesis is adjusted by the peripheral surface adjustment structure (80) acting on at least a portion of the prosthesis structure; and the peripheral surface adjustment structure (80) is connected to the second prosthesis component (20), so that the peripheral surface of the second prosthesis component (20) is changed by the peripheral surface adjustment structure (80) acting on the second prosthesis component (20); The second prosthesis assembly (20) is composed of a plurality of plates (24) spliced ​​together to form a columnar structure, two adjacent plates (24) are connected via a third elastic member (42), and the plurality of plates (24) enclose a receiving channel (25); At least part of the outer peripheral surface adjustment structure (80) is movably arranged in the accommodating channel (25), and the outer peripheral surface adjustment structure (80) is drivingly connected to the second prosthesis block (20), so that each of the plates (24) is driven by the outer peripheral surface adjustment structure (80) to move in a direction perpendicular to the extension direction of the second prosthesis block (20), so as to change the outer peripheral surface of the second prosthesis block (20); The peripheral surface adjustment structure (80) comprises an adjustment component (82), wherein the adjustment component (82) comprises: An adjusting body (821), the adjusting body (821) being a columnar structure, and the cross-sectional area of ​​the adjusting body (821) gradually decreases or gradually increases along a direction from one end of the adjusting body (821) to the other end of the adjusting body (821); wherein the cross-sectional area of ​​the adjusting body (821) is the area of ​​a cross section of the adjusting body (821) perpendicular to an extension direction of the adjusting body (821); The adjusting body (821) is arranged in the accommodating channel (25) so as to be reciprocatable along its extension direction, and the plurality of plates (24) are all connected to the adjusting body (821), so that when the adjusting body (821) reciprocates along its extension direction, the adjusting body (821) drives each of the plates (24) to move in a direction perpendicular to the extension direction of the second prosthesis assembly (20); The length adjustment structure (30) comprises a first driving device (31) and a telescopic assembly (32), wherein the first driving device (31) is used to connect to the first prosthesis block (10), and the telescopic assembly (32) is used to connect to the second prosthesis block (20), so that the first driving device (31) drives the telescopic assembly (32) to move along the extension direction of the bone filling prosthesis to make the second prosthesis block (20) approach or move away from the first prosthesis block (10); The telescopic assembly (32) comprises a telescopic body (321) and a support portion (322), wherein the support portion (322) is arranged on the telescopic body (321), and the support portion (322) is used to connect with the second prosthesis block (20); the telescopic body (321) has a first matching portion, and the first prosthesis block (10) has a second matching portion, so that the telescopic body (321) drives the support portion (322) to reciprocate along the extension direction of the bone filling prosthesis through the mutual cooperation of the first matching portion and the second matching portion.

2. The bone filling prosthesis according to claim 1, characterized in that: The adjusting body (821) has a first adjusting portion, and the second prosthesis block (20) has a second adjusting portion, and the first adjusting portion and the second adjusting portion cooperate with each other so that the adjusting body (821) can reciprocate along its extension direction.

3. The bone filling prosthesis according to claim 2, characterized in that: The peripheral surface adjustment structure (80) further comprises a second drive device (81), wherein the second drive device (81) is arranged in the accommodating channel (25), and the second drive device (81) comprises a second transmission member, wherein the second transmission member acts on the adjustment body (821) to move the adjustment body (821) relative to the second prosthesis assembly (20), thereby realizing mutual cooperation between the first adjustment part and the second adjustment part.

4. The bone filling prosthesis according to claim 3, characterized in that: The second transmission member is a second rotating shaft (811), so that the second rotating shaft (811) drives the adjustment body (821) to rotate; the adjustment component (82) further comprises: a fourth elastic member (823), the second rotating shaft (811) having an adjustment groove (812), the fourth elastic member (823) being arranged in the adjustment groove (812) and connected to the second rotating shaft (811); a second connecting member (824), at least a portion of which is disposed in the adjusting groove (812) and connected to the fourth elastic member (823); the adjusting body (821) is connected to the second connecting member (824), so that when the adjusting body (821) reciprocates along an extension direction of the adjusting body (821), the second connecting member (824) moves along with the adjusting body (821).

5. The bone filling prosthesis according to claim 4, characterized in that: The second connecting member (824) has a third transmission plane, and the inner wall surface of the adjusting groove (812) includes a fourth transmission plane. The third transmission plane is in close contact with the fourth transmission plane, so that the second rotating shaft (811) drives the adjusting body (821) to rotate through the second connecting member (824).

6. The bone filling prosthesis according to claim 4, characterized in that: The first adjustment portion is a second external thread (825), and the second external thread (825) is arranged on the outer peripheral wall of the adjustment body (821). The second adjustment portion is a second internal thread matching the second external thread (825), and the second internal thread is arranged on the inner wall of the accommodating channel (25). The adjustment body (821) is screwed to each of the plate bodies (24) through the mutual cooperation between the second external thread (825) and the second internal thread.

7. The bone filling prosthesis according to claim 4, characterized in that: The second driving device (81) further comprises a second driving component, the second driving component is a second motor (813), the second transmission member is connected to the output shaft of the second motor (813), and the second driving component is movably connected to the second prosthesis assembly (20).

8. The bone filling prosthesis according to claim 7, characterized in that: An elastic bracket (43) is provided between the second driving component and at least one of the plurality of plate bodies (24), so that the second driving component and the plate body (24) are movably connected via the elastic bracket (43).

9. The bone filling prosthesis according to claim 1, characterized in that: The first driving device (31) comprises a first transmission member, the first transmission member acting on the telescopic body (321) to enable the telescopic body (321) to move relative to the first prosthesis assembly (10), thereby achieving mutual cooperation between the first matching portion and the second matching portion.

10. The bone filling prosthesis according to claim 9, characterized in that: The first prosthesis assembly (10) has an adjustment channel (13), the first drive device (31) is arranged in the adjustment channel (13), at least a part of the telescopic body (321) is located in the adjustment channel (13), the first matching portion is arranged on the outer peripheral wall of the telescopic body (321), and the second matching portion is arranged on the inner wall of the adjustment channel (13).

11. The bone filling prosthesis according to claim 10, characterized in that: The first transmission member is a first rotating shaft (311), so that the first rotating shaft (311) drives the telescopic body (321) to rotate; The telescopic assembly (32) further comprises: a second elastic member (323), the first rotating shaft (311) having a mounting groove (312), the second elastic member (323) being arranged in the mounting groove (312) and connected to the first rotating shaft (311); A first connecting member (324), at least a portion of which is disposed in the mounting groove (312) and connected to the second elastic member (323), and the telescopic body (321) is connected to the first connecting member (324), so that when the telescopic body (321) reciprocates along the extension direction of the bone filling prosthesis, the first connecting member (324) moves along with the telescopic body (321).

12. The bone filling prosthesis according to claim 11, characterized in that: The first connecting member (324) has a first transmission plane, and the inner wall surface of the mounting groove (312) includes a second transmission plane, and the first transmission plane is in close contact with the second transmission plane, so that the first rotating shaft (311) drives the telescopic body (321) to rotate through the first connecting member (324).

13. The bone filling prosthesis according to claim 11, characterized in that: The first matching portion is a first external thread (325), and the second matching portion is a first internal thread matching the first external thread (325). The telescopic body (321) is threadedly connected to the first prosthesis assembly (10) through the mutual matching of the first external thread (325) and the first internal thread.

14. The bone filling prosthesis according to claim 11, characterized in that: The first driving device (31) further comprises a driving component, the driving component being a first motor (313), the first motor (313) being fixed to the inner wall of the regulating channel (13), and the first transmission member being connected to an output shaft of the first motor (313).

15. The bone filling prosthesis according to claim 1, characterized in that: The second prosthesis assembly (20) has an insertion groove (21), and at least a portion of the support portion (322) is rotatably inserted into the insertion groove (21), so that when the support portion (322) moves along with the telescopic body (321) in a direction away from the first prosthesis assembly (10), it pushes the second prosthesis assembly (20) to move synchronously.

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