Sternum prosthesis

Abstract

The present invention provides a sternum prosthesis, which includes a plurality of sternum segments, at least some of which can be selectively spliced ​​to form a sternum prosthesis, and the plurality of sternum segments are arranged in sequence along the extension direction of the sternum prosthesis; the sternum prosthesis is formed by assembling the plurality of sternum segments, and during the assembly process, the number of sternum segments can be determined according to the symptoms of the patient in actual needs; each sternum segment includes a sternum block and at least one group of rib plate groups, each rib plate group includes two rib plates, and the two rib plates are respectively arranged on both sides of the corresponding sternum block; during use, rib plates of different lengths can be selected according to the degree of defect; it can be seen that the size of the sternum prosthesis can be adjusted according to different needs, and the flexibility is good, which solves the problem that the size of the sternum prosthesis in the prior art cannot be adjusted.

Description

Technical Field

[0001] The invention relates to the medical field, and in particular to a sternum prosthesis. Background Art

[0002] The sternum is a flat bone located in the middle of the anterior chest wall. It is shaped like a short sword and consists of three parts: the handle, the body, and the xiphoid process. The two sides of the sternum are connected to the ribs to form the thorax, which plays an important role in protecting the mediastinum and the internal organs of the chest cavity. Due to common sternal diseases such as sternal tumors, infections, radiation ulcers, trauma, and congenital malformations, surgical treatment is often required, resulting in sternal defects. In severe cases, the entire sternum needs to be removed, which destroys the integrity, stability, and protection of the thorax to the mediastinal organs, and endangers the patient's life. Therefore, when the sternum is defective, the sternum needs to be reconstructed, and reconstruction of the sternum requires a sternal prosthesis.

[0003] Different patients require different sizes of sternum prostheses, but the sternum prostheses in the prior art have poor flexibility and cannot be adjusted to a prosthesis size that matches the patient's sternum according to the patient's actual needs. This not only causes great inconvenience to sternum repair surgery, but also is not conducive to alleviating the patient's prosthetic indications. Summary of the invention

[0004] The main purpose of the present invention is to provide a sternum prosthesis to solve the problem that the size of the sternum prosthesis in the prior art cannot be adjusted.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a sternum prosthesis, which includes a plurality of sternum segments, at least some of which can be selectively spliced ​​to form the sternum prosthesis, and the plurality of sternum segments are arranged in sequence along the extension direction of the sternum prosthesis, and two adjacent sternum segments in the sternum prosthesis are detachably connected; wherein each sternum segment includes a sternum block and at least one group of rib plate groups, each rib plate group includes two rib plates, the two rib plates are respectively arranged on both sides of the corresponding sternum block, and each rib plate is detachably connected to the corresponding sternum block.

[0006] Furthermore, each sternum block has a slide groove, and each sternum segment also includes a connecting part, and each connecting part is arranged on the corresponding sternum block. The connecting part and the slide groove of each sternum segment are respectively arranged at the relative position of the corresponding sternum block, and the connecting part of each sternum segment is passed through the slide groove of the sternum block of the sternum segment adjacent to it, so that multiple sternum segments can be spliced ​​in sequence.

[0007] Furthermore, the connecting portion of each sternum segment has a fixing hole group, each fixing hole group includes at least one fixing hole, and the sternum block of each sternum segment is provided with a through hole group corresponding to the fixing hole group, each through hole group includes at least one through hole, and the through hole is connected to the slide groove. The two adjacent sternum segments are respectively the first sternum segment and the second sternum segment, and the connecting portion of the second sternum segment is penetrated in the slide groove of the first sternum segment, so that the two adjacent sternum segments are relatively fixed by fasteners that are sequentially penetrated in the through hole of the first sternum segment and the corresponding fixing holes of the second sternum segment.

[0008] Furthermore, the connecting portion of each sternal segment has multiple groups of fixing holes, and the multiple groups of fixing holes of the connecting portion of each sternal segment are arranged at intervals along the extension direction of the sternal prosthesis, so that the fasteners can be selectively inserted into a group of fixing holes in the multiple groups of fixing holes of each sternal segment.

[0009] Furthermore, each sternum segment also includes: a first support portion group, each first support portion group includes two first support portions, the two first support portions of each first support portion group are respectively arranged on both sides of the corresponding sternum block, and the number of first support portion groups of each sternum segment is the same as the number of rib plate groups of the corresponding sternum segment; a second support portion group, each second support portion group is respectively arranged corresponding to a group of first support portion groups, each second support portion group includes two second support portions, the two second support portions of each second support portion group are respectively arranged corresponding to the two first support portions of the corresponding first support portion group, and each second support portion is respectively connected to the corresponding rib plate, so that each rib plate is connected to the corresponding sternum block through the corresponding first support portion and the corresponding second support portion.

[0010] Furthermore, each second supporting portion has a positioning hole, each rib plate has a locking component, and the locking component of each rib plate is inserted into the positioning hole of the corresponding second supporting portion.

[0011] Furthermore, each second support portion is a columnar structure, each first support portion has an assembly hole, and each second support portion is inserted into the assembly hole of the corresponding first support portion.

[0012] Furthermore, each first supporting portion is a plate-like structure, and the upper plate surface of each first supporting portion includes a first plate surface portion, a second plate surface portion and a third plate surface portion, the second plate surface portion is located between the first plate surface portion and the third plate surface portion, and the first plate surface portion and the third plate surface portion are spaced apart along the extension direction of the assembly hole so that a step structure is formed between the first plate surface portion, the second plate surface portion and the third plate surface portion of each first supporting portion; a limiting plate is provided on each second supporting portion, and each limiting plate has a limiting side surface, and the limiting side surface of each limiting plate is in limiting contact with the second plate surface portion of the corresponding first supporting portion, and at least a portion of the bottom wall of each limiting plate is in limiting contact with the first plate surface portion of the corresponding first supporting portion.

[0013] Furthermore, the outer peripheral surface of each limiting plate includes a second curved surface and a limiting side surface connected to the second curved surface, and the limiting side surface is a planar structure; the outer peripheral surface of each first supporting part includes a first curved surface, and the first curved surface of each first supporting part is flush with the second curved surface of the corresponding limiting plate.

[0014] Furthermore, an annular boss is protruding from the outer peripheral wall of each second support part, and the annular boss extends along the circumference of the second support part so that when the annular boss passes through the assembly hole of the corresponding first support part to the lower side of the first support part, the upper wall surface of the annular boss is in limited contact with at least part of the lower plate surface of the corresponding first support part.

[0015] Furthermore, a plurality of elastic notches are provided at the bottom end of each second supporting portion, and the plurality of elastic notches of each second supporting portion are arranged along the circumference of the second supporting portion.

[0016] Furthermore, the positioning holes of each second support portion extend along the extension direction of the second support portion, and the multiple elastic notches of each second support portion are connected to the positioning holes of the second support portion.

[0017] Furthermore, each rib plate also includes a rib plate body, and the locking component of each rib plate is arranged on the corresponding rib plate body and protrudes from the outer surface of the rib plate body.

[0018] Furthermore, the locking components of each rib plate include a fixing portion and a locking portion, the fixing portion is a columnar structure, one end of the fixing portion is connected to the corresponding rib plate body, and the other end of the fixing portion is connected to the locking portion, and the outer peripheral wall of the locking portion is in limiting contact with the inner wall of the corresponding positioning hole.

[0019] Furthermore, a plurality of embedding holes are provided on the rib plate body of each rib plate, so that at least a part of the surrounding tissue of the sternum prosthesis can be embedded in the embedding holes.

[0020] The technical solution of the present invention is applied, and the sternum prosthesis adopts a split design, which includes multiple sternum segments, at least some of which can be selectively spliced ​​to form a sternum prosthesis, and the multiple sternum segments are arranged in sequence along the extension direction of the sternum prosthesis; the sternum prosthesis is formed by assembling multiple sternum segments, and during the assembly process, the number of sternum segments can be determined according to the symptoms of the patient in actual needs, so that the length of the assembled sternum prosthesis can be adapted to different patients; each sternum segment includes a sternum block and at least one group of rib plate groups, and each rib plate group includes two rib plates, and the two rib plates are respectively arranged on both sides of the corresponding sternum block; during use, rib plates of different lengths can be selected according to the degree of defect, so that the sternum prosthesis can better adapt to the needs of patients with different symptoms, which is conducive to alleviating the prosthetic indications of patients. It can be seen that the size of the sternum prosthesis can be adjusted according to different needs, and the flexibility is good, which solves the problem that the size of the sternum prosthesis in the prior art cannot be adjusted.

[0021] In addition, two adjacent sternum segments in the sternum prosthesis are detachably connected, and each rib plate is detachably connected to the corresponding sternum block, which makes the assembly and disassembly of the sternum prosthesis more convenient and increases the convenience of sternum repair surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 It shows a schematic structural diagram of a sternum prosthesis according to an embodiment of the present invention after the rib plate group is removed;

[0024] Figure 2 Shows Figure 1 A schematic diagram of the structure of the sternum prosthesis after the rib plate group is removed from the sternum segment;

[0025] Figure 3 Shows Figure 2 The exploded structure diagram of the sternum prosthesis after the rib plate group is removed from the sternum segment;

[0026] Figure 4 Shows Figure 1 A schematic diagram of the matching structure of the sternum block, the connecting part and the first supporting part group of the sternum segment of the sternum prosthesis;

[0027] Figure 5 Shows Figure 1 A schematic structural diagram of the rib plate of the sternum segment of the sternum prosthesis from a first perspective; and

[0028] Figure 6 Shows Figure 1 Schematic diagram of the structure of the rib plate of the sternal segment of the sternal prosthesis from a second perspective.

[0029] The above drawings include the following reference numerals:

[0030] 10. sternum block; 12. slide groove; 131. first side wall; 132. second side wall; 133. third side wall; 134. fourth side wall; 14. through hole; 20. rib plate; 21. rib plate body; 23. locking component; 231. fixing part; 232. locking part; 30. first supporting part; 31. assembly hole; 321. first plate face part; 322. second plate face part; 323. third plate face part; 324. first arcuate surface; 40. second supporting part; 41. positioning hole; 42. limiting plate; 421. limiting side surface; 422. second arcuate surface; 43. annular boss; 44. elastic notch; 50. connecting part; 51. fixing hole. DETAILED DESCRIPTION

[0031] 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.

[0032] The present invention provides a sternum prosthesis for installation in the defective part of the human sternum. Figures 1 to 6 The sternum prosthesis includes a plurality of sternum segments, at least some of which can be selectively spliced ​​to form the sternum prosthesis, and the plurality of sternum segments are arranged in sequence along the extension direction of the sternum prosthesis, and two adjacent sternum segments in the sternum prosthesis are detachably connected; wherein each sternum segment includes a sternum block 10 and at least one group of rib plate groups, each rib plate group includes two rib plates 20, the two rib plates 20 are respectively arranged on both sides of the corresponding sternum block 10, and each rib plate 20 is detachably connected to the corresponding sternum block 10.

[0033] In the sternum prosthesis of the present invention, it adopts a split design, and a sternum prosthesis is formed by assembling multiple sternum segments. During the assembly process, the number of sternum segments can be determined according to the patient's condition in actual needs, so that the length of the assembled sternum prosthesis can adapt to different patients; each sternum segment includes a sternum block 10 and at least one group of rib plate groups, each rib plate group includes two rib plates 20, and the two rib plates 20 are respectively arranged on both sides of the corresponding sternum block 10. During use, rib plates 20 of different lengths can be selected according to the degree of defect, so that the sternum prosthesis can better adapt to the needs of patients with different diseases, which is conducive to alleviating the prosthesis indications of the patient. It can be seen that the size of the sternum prosthesis can be adjusted according to different needs, and the flexibility is good, which solves the problem that the size of the sternum prosthesis in the prior art cannot be adjusted. In addition, the adjacent two sternum segments of the sternum prosthesis are detachably connected, and each rib plate 20 is detachably connected to the corresponding sternum block 10, which makes the assembly and disassembly of the sternum prosthesis more convenient, and increases the convenience of sternum repair surgery.

[0034] In this embodiment, the sternum prosthesis includes five sternum segments. Figure 1 As shown, the sternum blocks 10 of the five sternum segments are all roughly quadrilateral in shape, and the shape of the sternum blocks 10 is generally quadrilateral. Figure 1 The sternum segment at the upper end is the first sternum segment, and the sternum segment at the lower end is the last sternum segment; along the extension direction from the first sternum segment to the last sternum segment, the cross-sectional area of ​​the sternum block 10 of the first sternum segment gradually increases, the cross-sectional area of ​​the sternum block 10 of the last sternum segment gradually decreases, and the cross-sectional areas of the sternum blocks 10 of the sternum segments between the first sternum segment and the last sternum segment gradually decrease; wherein, the cross-sectional area of ​​the sternum block 10 of each sternum segment is the area of ​​the cross section of the corresponding sternum block 10 perpendicular to the extension direction of the sternum prosthesis.

[0035] In order to realize the assembly between two adjacent sternum segments in the sternum prosthesis, Figure 2 and Figure 3 As shown, each sternum block 10 has a slide groove 12, and each sternum segment also includes a connecting portion 50. Each connecting portion 50 is arranged on the corresponding sternum block 10. The connecting portion 50 and the slide groove 12 of each sternum segment are respectively arranged at the relative position of the corresponding sternum block 10. By making the connecting portion 50 of each sternum segment pass through the slide groove 12 of the sternum block 10 of the sternum segment adjacent to it, multiple sternum segments can be spliced ​​in sequence.

[0036] During the specific implementation process, when the outer shape of the sternum block 10 of each sternum segment is roughly a quadrilateral, the sternum block 10 of each sternum segment has a first side wall 131, a second side wall 132, a third side wall 133, and a fourth side wall 134, wherein the first side wall 131 and the third side wall 133 are two side walls of the sternum block 10 respectively arranged in a direction perpendicular to the extension direction of the sternum prosthesis, and the second side wall 132 and the fourth side wall 134 are two side walls of the sternum block 10 respectively arranged in the extension direction of the sternum prosthesis; the connecting portion 50 of each sternum segment is respectively arranged on the first side wall 131 of the corresponding sternum block 10, and the slide groove 12 of the sternum block 10 of each sternum segment is formed by the third side wall 133 of the sternum block 10 being recessed inwardly.

[0037] During the specific implementation process, the connecting portion 50 of each sternal segment is a sheet-like structure; further, in order to facilitate the connecting portion 50 of each sternal segment to pass through the slide groove 12 of the sternal block 10 of the adjacent sternal segment, the outer shape of each connecting portion 50 is roughly a quadrilateral; along the extension direction from the first sternal segment to the last sternal segment, except for the connecting portion 50 of the first sternal segment, the cross-sectional areas of the connecting portions 50 of the remaining sternal segments gradually increase, and the cross-sectional area of ​​the connecting portion 50 of the first sternal segment gradually decreases; wherein, the cross-sectional area of ​​each connecting portion 50 is the area of ​​the cross section of the corresponding connecting portion 50 perpendicular to the extension direction of the sternal prosthesis.

[0038] It should be noted that the connecting portion 50 of the first sternum segment is used to connect with the sternum portion retained by the human body, so that the sternum prosthesis and the sternum portion retained by the human body are relatively fixed.

[0039] In order to make the assembly structure of two adjacent sternum segments in the sternum prosthesis more stable after assembly, the connection part 50 of each sternum segment has a fixing hole group, each fixing hole group includes at least one fixing hole 51, and the sternum block 10 of each sternum segment is provided with a through hole group corresponding to the fixing hole group, each through hole group includes at least one through hole 14, and the through hole 14 on the sternum block 10 of each sternum segment is connected with the slide groove 12. The two adjacent sternum segments are respectively the first sternum segment and the second sternum segment, and the connection part 50 of the second sternum segment is penetrated in the slide groove 12 of the first sternum segment, so that the two adjacent sternum segments are relatively fixed by fasteners sequentially penetrated in the through hole 14 of the first sternum segment and the corresponding fixing hole 51 of the second sternum segment, thereby making the overall structure of the sternum prosthesis more stable. For example, the fastener is a screw. Preferably, each fixing hole group includes a plurality of fixing holes 51 , and the plurality of fixing holes are arranged at intervals along a direction perpendicular to the extension direction of the sternum prosthesis; in the present embodiment, each fixing hole group includes two fixing holes 51 .

[0040] Specifically, the connection part 50 of each sternum segment has multiple groups of fixing holes, and the multiple groups of fixing holes of the connection part 50 of each sternum segment are arranged at intervals along the extension direction of the sternum prosthesis, so that the fasteners can be selectively inserted into a group of fixing holes 51 in the multiple groups of fixing holes of each sternum segment to adjust the distance between two adjacent sternum segments in the sternum prosthesis. By adjusting the distance between two adjacent sternum segments, the length of the sternum prosthesis can be fine-tuned, so that the length of the sternum prosthesis can be more accurately adapted to the needs of the patient; in this embodiment, the remaining sternum segments except the first sternum segment have three groups of fixing holes, and the first sternum segment has two groups of fixing holes. The distance between the first sternum segment and the sternum portion retained by the human body can be adjusted by allowing the fasteners to be selectively inserted into the fixing holes 51 of any one of the two groups of fixing holes of the first sternum segment.

[0041] In order to realize the assembly between each rib plate 20 and the corresponding sternum block 10, each sternum segment also includes a first support portion group and a second support portion group; each first support portion group includes two first support portions 30, and the two first support portions 30 of each first support portion group are respectively arranged on both sides of the corresponding sternum block 10, and the number of first support portion groups of each sternum segment is the same as the number of rib plate groups of the corresponding sternum segment; each second support portion group is respectively arranged corresponding to a group of first support portion groups, and each second support portion group includes two second support portions 40, and the two second support portions 40 of each second support portion group are respectively arranged corresponding to the two first support portions 30 of the corresponding first support portion group, and each second support portion 40 is respectively connected to the corresponding rib plate 20, so that each rib plate 20 is connected to the corresponding sternum block 10 through the corresponding first support portion 30 and the corresponding second support portion 40.

[0042] During the specific implementation process, the two first support parts 30 of the first support part group of each sternum segment are respectively arranged on the second side wall 132 and the fourth side wall 134 of the corresponding sternum block 10 .

[0043] In a specific implementation process, in order to enhance the strength between each first support portion group and the corresponding sternum block 10 , each first support portion group and the corresponding sternum block 10 are integrally formed.

[0044] like Figures 2 to 4 As shown, in order to achieve assembly between each rib plate 20 and the corresponding second support part 40, each second support part 40 has a positioning hole 41, and each rib plate 20 has a locking component 23. The locking component 23 of each rib plate 20 is inserted into the positioning hole 41 of the corresponding second support part 40.

[0045] In order to realize the assembly between each second support part 40 and the corresponding first support part 30, each second support part 40 is a columnar structure, each first support part 30 has an assembly hole 31, and each second support part 40 is inserted into the assembly hole 31 of the corresponding first support part 30. Preferably, each second support part 40 is a cylindrical structure, and each assembly hole 31 of the first support part 30 is a circular through hole matching the corresponding second support part 40.

[0046] Specifically, each first support portion 30 is a plate-like structure, and the upper plate surface of each first support portion 30 includes a first plate surface portion 321, a second plate surface portion 322 and a third plate surface portion 323, the second plate surface portion 322 is located between the first plate surface portion 321 and the third plate surface portion 323, and the first plate surface portion 321 and the third plate surface portion 323 are spaced apart along the extension direction of the assembly hole 31 so that a step structure is formed between the first plate surface portion 321, the second plate surface portion 322 and the third plate surface portion 323 of each first support portion 30; a limiting plate 42 is provided on each second support portion 40, and each limiting plate 42 has a limiting side surface 421, and the limiting side surface 421 of each limiting plate 42 is in limiting contact with the second plate surface portion 322 of the corresponding first support portion 30, and at least a portion of the bottom wall of each limiting plate 42 is in limiting contact with the first plate surface portion 321 of the corresponding first support portion 30. By the mutual cooperation between the step structure of each first support part 30 and the limiting plate 42 of the corresponding second support part 40, a limiting effect can be formed on the corresponding second support part 40, so that each second support part 40 can be stably inserted into the assembly hole 31 of the corresponding first support part 30.

[0047] During the specific implementation process, in order to make the overall structure of each sternum segment more compact and regular, the outer peripheral surface of each limiting plate 42 includes a second curved surface 422 and a limiting side surface 421 connected to the second curved surface 422, and the limiting side surface 421 is a planar structure; the outer peripheral surface of each first support part 30 includes a first curved surface 324, and the first curved surface 324 of each first support part 30 is flush with the second curved surface 422 of the corresponding limiting plate 42; that is, the first curved surface 324 of each first support part 30 is on the same curved surface as the second curved surface 422 of the corresponding limiting plate 42.

[0048] In order to make the assembly effect of each second support part 40 and the corresponding first support part 30 more stable, the outer peripheral wall of each second support part 40 is protruded with an annular boss 43, and the annular boss 43 extends along the circumference of the second support part 40, so that when the annular boss 43 passes through the assembly hole 31 of the corresponding first support part 30 to the lower side of the first support part 30, the upper wall surface of the annular boss 43 is in limited contact with at least part of the lower plate surface of the corresponding first support part 30; that is, the annular boss 43 can make each second support part 40 more stably pass through the assembly hole 31 of the corresponding first support part 30, thereby preventing each second support part 40 from easily detaching from the corresponding first support part 30.

[0049] During the specific implementation process, in order to enhance the elastic effect of the bottom end of each second support part 40 so that each second support part 40 can be easily operated when inserted into the assembly hole 31 of the corresponding first support part 30, a plurality of elastic notches 44 are provided at the bottom end of each second support part 40, and the plurality of elastic notches 44 of each second support part 40 are arranged along the circumference of the second support part 40 so that the elastic effect of the bottom end of each second support part 40 is more uniform.

[0050] During the specific implementation process, the positioning holes 41 of each second support part 40 are extended along the extension direction of the second support part 40, and the multiple elastic notches 44 of each second support part 40 are connected to its positioning holes 41 to further enhance the elastic effect of the bottom end of each second support part 40, which can make the bottom end of the second support part 40 easily squeezed and deformed, thereby facilitating each second support part 40 to penetrate into the corresponding assembly hole 31 of the first support part 30.

[0051] Specifically, Figure 5 and Figure 6 As shown, each rib plate 20 further includes a rib plate body 21, and a locking component 23 of each rib plate 20 is disposed on the corresponding rib plate body 21 and protrudes from the outer surface of the rib plate body 21. Preferably, the rib plate body 21 adopts an arched structure similar to the ribs of the human body, and the locking component 23 of each rib plate 20 is disposed at the first end of the corresponding rib plate body 21, so that the first end of the rib plate body 21 of each rib plate 20 is connected to the corresponding second supporting portion 40 through its locking component 23; the second end of the rib plate body 21 of each rib plate 20 is used to overlap with the corresponding rib remaining in the human body after resection.

[0052] During the specific implementation process, the locking component 23 of each rib plate 20 includes a fixing portion 231 and a locking portion 232. The fixing portion 231 is a columnar structure, one end of the fixing portion 231 is connected to the corresponding rib plate body 21, and the other end of the fixing portion 231 is connected to the locking portion 232. The outer peripheral wall of the locking portion 232 is in limiting contact with the inner wall of the corresponding positioning hole 41; the outer peripheral wall of the locking portion 232 of the locking component 23 of each rib plate 20 is in limiting contact with the inner wall of the positioning hole 41 of the corresponding second support portion 40, so as to make the assembly effect between each rib plate 20 and the corresponding second support portion 40 more stable, thereby preventing each rib plate 20 from being separated from the corresponding second support portion 40.

[0053] In the specific implementation process, a plurality of embedding holes are provided on the rib plate body 21 of each rib plate 20, so that at least part of the surrounding tissue of the sternum prosthesis can be embedded in the embedding holes, which can make the implanted sternum prosthesis more stable.

[0054] In the specific implementation process, each second support part 40 is made of elastic material. Preferably, each second support part 40 is made of low elastic modulus material, and each second support part 40 can be deformed when being squeezed, which not only makes it easy to assemble each second support part 40 when it penetrates the assembly hole 31 of the corresponding first support part 30, but also facilitates the locking part 23 of each rib plate 20 to squeeze in when the locking part 23 of each rib plate 20 is inserted into the positioning hole 41 of the corresponding second support part 40, thereby making it more convenient for each second support part 40 to be assembled with the corresponding first support part 30 and the corresponding rib plate 20; and after each second support part 40 penetrates into the assembly hole 31 of the corresponding first support part 30, each second support part 40 makes at least part of the outer peripheral arm of each second support part 40 fit and contact with the inner wall surface of the assembly hole 31 of the corresponding first support part 30 under the action of elasticity, so that each second support part 40 is assembled with the corresponding first support part 30 more stably. In addition, each second support portion 40 is made of elastic material, and each rib plate 20 is elastically connected to the corresponding sternum block 10, which is more in line with the anatomical characteristics of the human body. This allows the patient to have micro-movements between each rib plate 20 and the corresponding sternum block 10 when the chest expands after the sternum prosthesis is implanted, thereby reducing the sense of oppression on the human chest.

[0055] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0056] In the sternum prosthesis of the present invention, the sternum prosthesis adopts a split design, which includes multiple sternum segments, at least some of the sternum segments in the multiple sternum segments can be selectively spliced ​​to form a sternum prosthesis, and the multiple sternum segments are arranged in sequence along the extension direction of the sternum prosthesis; by assembling multiple sternum segments to form a sternum prosthesis, during the assembly process, the number of sternum segments can be determined according to the symptoms of the patient in actual needs, so that the length of the assembled sternum prosthesis can be adapted to different patients; each sternum segment includes a sternum block 10 and at least one group of rib plate groups, each rib plate group includes two rib plates 20, and the two rib plates 20 are respectively arranged on both sides of the corresponding sternum block 10; during use, rib plates 20 of different lengths can be selected according to the degree of defect, so that the sternum prosthesis can better adapt to the needs of patients with different symptoms, which is conducive to alleviating the prosthetic indications of the patient. It can be seen that the size of the sternum prosthesis can be adjusted according to different needs, with good flexibility, solving the problem that the size of the sternum prosthesis in the prior art cannot be adjusted.

[0057] In addition, two adjacent sternum segments in the sternum prosthesis are detachably connected, and each rib plate 20 is detachably connected to the corresponding sternum block 10, which makes the assembly and disassembly of the sternum prosthesis more convenient and increases the convenience of sternum repair surgery.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein 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" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0059] 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.

[0060] 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.

[0061] 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 sternum prosthesis, characterized in that: include: A plurality of sternum segments, at least some of which can be selectively spliced ​​to form a sternum prosthesis, the plurality of sternum segments are arranged in sequence along the extension direction of the sternum prosthesis, and two adjacent sternum segments in the sternum prosthesis are detachably connected; Each sternum segment comprises a sternum block (10) and at least one group of rib plates, each rib plate group comprises two rib plates (20), the two rib plates (20) are respectively arranged on both sides of the corresponding sternum block (10), and each rib plate (20) is detachably connected to the corresponding sternum block (10); Each of the sternum blocks (10) has a slide groove (12), and each of the sternum segments also includes a connecting portion (50), and each of the connecting portions (50) is arranged on the corresponding sternum block (10). The connecting portion (50) and the slide groove (12) of each sternum segment are respectively arranged at relative positions of the corresponding sternum block (10), and the connecting portion (50) of each sternum segment is inserted into the slide groove (12) of the sternum block (10) of the sternum segment adjacent to it, so that the multiple sternum segments are spliced ​​in sequence; The connecting portion (50) of each sternum segment has a fixing hole group, each of which includes at least one fixing hole (51); the sternum block (10) of each sternum segment is provided with a through hole group corresponding to the fixing hole group, each of which includes at least one through hole (14); the through hole (14) is connected to the slide groove (12); two adjacent sternum segments are respectively a first sternum segment and a second sternum segment; the connecting portion (50) of the second sternum segment is penetrated in the slide groove (12) of the first sternum segment, so that the two adjacent sternum segments are relatively fixed by fasteners sequentially penetrated in the through hole (14) of the first sternum segment and the corresponding fixing hole (51) of the second sternum segment; The connecting portion (50) of each sternum segment has a plurality of fixing hole groups, and the plurality of fixing hole groups of the connecting portion (50) of each sternum segment are arranged at intervals along the extension direction of the sternum prosthesis, so that the fastener can be selectively inserted into a group of fixing holes (51) in the plurality of fixing hole groups of each sternum segment; Each section of the sternum segment further comprises a first support portion group and a second support portion group, each of the first support portion groups comprises two first support portions (30), the two first support portions (30) of each first support portion group are respectively arranged on both sides of the corresponding sternum block (10), and the number of the first support portion groups of each section of the sternum segment is the same as the number of the rib plate groups of the corresponding sternum segment; each second support portion group is respectively arranged corresponding to a group of the first support portion groups, each of the second support portion groups comprises two second support portions (40), the two second support portions (40) of each second support portion group are respectively arranged corresponding to the two first support portions (30) of the corresponding first support portion group, and each second support portion (40) is respectively connected to the corresponding rib plate (20), so that each rib plate (20) is connected to the corresponding sternum block (10) through the corresponding first support portion (30) and the corresponding second support portion (40).

2. The sternum prosthesis according to claim 1, characterized in that: Each of the second supporting parts (40) has a positioning hole (41), and each of the rib plates (20) has a locking component (23). The locking component (23) of each of the rib plates (20) is inserted into the positioning hole (41) of the corresponding second supporting part (40).

3. The sternum prosthesis according to claim 2, characterized in that: Each of the second support parts (40) is a columnar structure, each of the first support parts (30) has an assembly hole (31), and each of the second support parts (40) is inserted into the assembly hole (31) of the corresponding first support part (30).

4. The sternum prosthesis according to claim 3, characterized in that: Each of the first supporting parts (30) is a plate-shaped structure, and the upper plate surface of each of the first supporting parts (30) includes a first plate surface portion (321), a second plate surface portion (322) and a third plate surface portion (323), the second plate surface portion (322) is located between the first plate surface portion (321) and the third plate surface portion (323), and the first plate surface portion (321) and the third plate surface portion (323) are arranged at intervals along the extension direction of the assembly hole (31), so that a step structure is formed between the first plate surface portion (321), the second plate surface portion (322) and the third plate surface portion (323) of each of the first supporting parts (30); A limiting plate (42) is provided on each of the second supporting parts (40), and each of the limiting plates (42) has a limiting side surface (421). The limiting side surface (421) of each of the limiting plates (42) is in limiting contact with the second plate surface portion (322) of the corresponding first supporting part (30), and at least a portion of the bottom wall of each of the limiting plates (42) is in limiting contact with the first plate surface portion (321) of the corresponding first supporting part (30).

5. The sternum prosthesis according to claim 4, characterized in that: The outer peripheral surface of each of the limiting plates (42) comprises a second arcuate surface (422) and a limiting side surface (421) connected to the second arcuate surface (422), and the limiting side surface (421) is a planar structure; The outer peripheral surface of each first supporting portion (30) comprises a first arcuate surface (324), and the first arcuate surface (324) of each first supporting portion (30) is flush with the second arcuate surface (422) of the corresponding limiting plate (42).

6. The sternum prosthesis according to claim 4, characterized in that: An annular boss (43) is protruding from the outer peripheral wall of each second support portion (40), and the annular boss (43) extends along the circumference of the second support portion (40) so that when the annular boss (43) passes through the assembly hole (31) of the corresponding first support portion (30) to the lower side of the first support portion (30), the upper wall surface of the annular boss (43) is in limited contact with at least part of the lower plate surface of the corresponding first support portion (30).

7. The sternum prosthesis according to claim 4, characterized in that: A plurality of elastic notches (44) are provided at the bottom end of each second supporting portion (40), and the plurality of elastic notches (44) of each second supporting portion (40) are arranged along the circumference of the second supporting portion (40).

8. The sternum prosthesis according to claim 7, characterized in that: The positioning holes (41) of each second supporting portion (40) extend along the extension direction of the second supporting portion (40), and the plurality of elastic notches (44) of each second supporting portion (40) are connected to the positioning holes (41) of the second supporting portion (40).

9. The sternum prosthesis according to claim 2, characterized in that: Each of the rib plates (20) further comprises a rib plate body (21), and the locking component (23) of each of the rib plates (20) is arranged on the corresponding rib plate body (21) and protrudes from the outer surface of the rib plate body (21).

10. The sternum prosthesis according to claim 9, characterized in that: The locking component (23) of each of the rib plates (20) includes a fixing portion (231) and a locking portion (232), wherein the fixing portion (231) is a columnar structure, one end of the fixing portion (231) is connected to the corresponding rib plate body (21), and the other end of the fixing portion (231) is connected to the locking portion (232), and the outer peripheral wall of the locking portion (232) is in limiting contact with the inner wall of the corresponding positioning hole (41).

11. The sternum prosthesis according to claim 9, characterized in that: The rib plate body (21) of each rib plate (20) is provided with a plurality of embedding holes so that at least part of the surrounding tissue of the sternum prosthesis can be embedded in the embedding holes.

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