Structure of 3D titanium mesh prosthesis for steel plate

Abstract

The application discloses a kind of structures of 3D titanium mesh prosthesis for steel plate, including titanium mesh prosthesis main body, three main body fixed bands are uniformly installed in the center of the titanium mesh prosthesis main body, and titanium mesh prosthesis main body is wound into cylindrical shape, and the top and bottom of titanium mesh prosthesis main body are symmetrically installed with connecting band respectively, and the center of connecting band is provided with through hole, the titanium mesh prosthesis is printed by 3D printing technology, it is convenient to realize individual customization according to the condition of patient, solve the problem of bone graft source difficulty, simultaneously, without opening mould customization, reduce production cost, the joint of prosthesis and long bone is fixed by fastening mechanism, effectively avoid the situation that prosthesis and long bone joint fall off, improve the stability degree of prosthesis installation, and the aperture range of titanium mesh prosthesis main body and titanium mesh end head is 60-90%, the aperture range is 300-600um, and the porosity is high, it is convenient for callus to grow directly into gap, and it is convenient for prosthesis and long bone to become integral.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a structure of a 3D titanium mesh prosthesis for a steel plate. Background Art

[0002] Prosthesis, also known as prosthetic in medicine, is a medical device that replaces a limb, organ, or tissue in the human body. Based on their intended use, they can be divided into in vitro prostheses and implantable prostheses. The former include artificial limbs, dentures, and glass eyeballs, while the latter are prostheses that are completely implanted inside the human body and replace organs or tissues, such as artificial tendons, artificial heart valves, and artificial joints. 3D titanium mesh prostheses are implantable prostheses used for the clinical treatment of large bone defects in long bones.

[0003] The prostheses currently on the market are complex to make and require individual mold opening and customization according to the patient's condition, which is time-consuming and labor-intensive, and increases production costs. At the same time, when large bone defects occur in long bones, it is difficult to source bone grafts. Moreover, after implantation, the joints between the prostheses and the long bones are prone to loosening and falling off, which reduces the firmness of the prosthesis installation. At the same time, there is a certain degree of rejection reaction between the prosthesis and the patient, and it is difficult for the prosthesis to grow together with the long bones, which reduces the support effect of the prosthesis. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure of a 3D titanium mesh prosthesis for a steel plate to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a structure of a 3D titanium mesh prosthesis for steel plates, comprising a titanium mesh prosthesis main body, three main body fixing straps evenly installed at the center of the titanium mesh prosthesis main body, and the titanium mesh prosthesis main body is rolled into a cylindrical shape, connecting straps are symmetrically installed at the top and bottom of the titanium mesh prosthesis main body, and a connecting hole is opened in the center of the connecting strap, a fastening mechanism is installed at the edge position on the opposite side of the connecting strap, and titanium mesh end heads are respectively installed at the center of the opposite side of the connecting strap.

[0006] Preferably, the fastening mechanism includes a fixed block, a screw, a threaded block, a semi-arc fastening net, an annular mounting plate, a slider, a connecting pin, a slide rail and a rotating block. An annular mounting plate is installed at the edge position on the opposite side of the connecting belt, and two threaded blocks are symmetrically installed on the outer side wall of the annular mounting plate. A screw is movably passed through the center of the threaded block, and the screw and the threaded block are connected by threaded cooperation. One end of the screw is fixedly connected to the fixed block, and the other end of the screw is rotatably connected to the rotating block. One side of the rotating block is fixedly connected to the semi-arc fastening net, and the opposite side of the semi-arc fastening net is respectively fitted with the bottom of both sides of the outer side wall of the titanium mesh end head.

[0007] Preferably, a connecting pin is installed at the bottom center of the semi-arc fastening net, and a slider is fixedly connected to the bottom of the connecting pin. A sliding rail is sleeved on the periphery of the slider, and the sliding rail is slidably connected to the slider. The sliding rails are symmetrically installed on both sides of the top of the connecting belt.

[0008] Preferably, two main body reinforcement ribs and a first mounting belt are evenly installed on the titanium mesh prosthesis body, and several first fixing heads are evenly installed on the edge of one side of the titanium mesh prosthesis body. A first center threaded hole is opened in the center of the first fixing head, and first side threaded holes are symmetrically opened on both sides of the first fixing head.

[0009] Preferably, a second limiting hole is opened on one side of the main body fixing belt.

[0010] Preferably, the titanium mesh end is rolled into a cylindrical shape, and an end fixing belt is installed at the center of the titanium mesh end, and a first limiting hole is opened on one side of the end fixing belt.

[0011] Preferably, two end reinforcement ribs and a second mounting belt are evenly installed on the end of the titanium mesh, and several second fixing heads are evenly installed on the edge of one side of the titanium mesh end. A second center threaded hole is opened in the center of the second fixing head, and second side threaded holes are symmetrically opened on both sides of the second fixing head.

[0012] Preferably, the interior of the titanium mesh end is a cavity, and the cavity is connected to the interior of the titanium mesh prosthesis body through a connecting hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This invention uses 3D printing technology to print titanium mesh prostheses, which facilitates personalized customization based on the patient's condition, solving the problem of difficulty in sourcing bone grafts. At the same time, it eliminates the need for mold customization, reducing production costs.

[0015] 2. The present invention uses a fastening mechanism to compress and fix the joint between the prosthesis and the long bone, effectively preventing the joint between the prosthesis and the long bone from falling off and improving the stability of the prosthesis installation;

[0016] 3. The present invention uses titanium alloy as the raw material to make the prosthesis, which reduces the rejection reaction between the human body and the prosthesis. In addition, the porosity range of the titanium mesh prosthesis body and the titanium mesh end is 60-90%, and the pore size range is 300-600um. The high porosity facilitates the direct growth of bone callus into the gap, making it easier for the prosthesis and long bone to become one. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1A magnified schematic diagram of area A in the middle;

[0019] Figure 3 For the present invention Figure 1 A magnified schematic diagram of area B in the middle;

[0020] Figure 4 For the present invention Figure 1 Enlarged schematic diagram of area C in the middle;

[0021] Figure 5 It is a front view of the overall structure of the present invention;

[0022] Figure 6 It is a partial cross-sectional view of the overall structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of area D in the middle;

[0024] In the figure: 1. Titanium mesh prosthesis body; 2. Main body reinforcement rib; 3. Main body fixing belt; 4. First limiting hole; 5. End reinforcement rib; 6. Titanium mesh end; 7. Fastening mechanism; 8. End fixing belt; 9. Second limiting hole; 10. First mounting belt; 11. First fixing head; 12. First center threaded hole; 13. First side threaded hole; 14. Second mounting belt; 15. Second side threaded hole; 16. Second center threaded hole; 17. Second fixing head; 18. Connecting belt; 19. Cavity; 20. Connecting hole; 701. Fixing block; 702. Screw; 703. Threaded block; 704. Semi-arc fastening mesh; 705. Annular mounting plate; 706. Slider; 707. Connecting pin; 708. Slide rail; 709. Rotating block. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-7, an embodiment provided by the present invention: a structure of a 3D titanium mesh prosthesis for a steel plate, comprising a titanium mesh prosthesis main body 1, three main body fixing bands 3 are evenly installed at the center of the titanium mesh prosthesis main body 1, a second limiting hole 9 is opened on one side of the main body fixing band 3, the titanium mesh prosthesis main body 1 is rolled into a cylindrical shape, and connecting bands 18 are symmetrically installed on the top and bottom of the titanium mesh prosthesis main body 1, and a connecting hole 20 is opened in the center of the connecting band 18, two main body reinforcing ribs 2 and a first mounting band 10 are evenly installed on the titanium mesh prosthesis main body 1, and a plurality of first fixing heads 11 are evenly installed at the edge position of one side of the titanium mesh prosthesis main body 1, a first center threaded hole 12 is opened in the center of the first fixing head 11, and first side threaded holes 13 are symmetrically opened on both sides of the first fixing head 11 , a fastening mechanism 7 is installed at the edge position on the opposite side of the connecting belt 18, and the fastening mechanism 7 includes a fixed block 701, a screw 702, a threaded block 703, a semi-arc fastening net 704, an annular mounting plate 705, a slider 706, a connecting pin 707, a slide rail 708 and a rotating block 709. An annular mounting plate 705 is installed at the edge position on the opposite side of the connecting belt 18, and two threaded blocks 703 are symmetrically installed on the outer side wall of the annular mounting plate 705. The center of the threaded block 703 is movable through a screw 702, and the screw 702 is connected to the threaded block 703 by threaded cooperation. One end of the screw 702 is fixedly connected to the fixed block 701, and the other end of the screw 702 is rotatably connected to the rotating block 709. One side of the rotating block 709 is fixedly connected to a semi-arc The fastening net 704 is provided, and one side of the semi-arc fastening net 704 is respectively fitted with the bottom of the two sides of the outer wall of the titanium mesh end head 6. A connecting pin 707 is installed at the bottom center of the semi-arc fastening net 704, and a slider 706 is fixedly connected to the bottom of the connecting pin 707. A sliding rail 708 is sleeved on the periphery of the slider 706, and the sliding rail 708 is slidably connected to the slider 706. The sliding rail 708 is symmetrically installed on both sides of the top of the connecting belt 18, which is conducive to limiting the movement direction of the semi-arc fastening net 704 by the sliding rail 708 and the slider 706. The titanium mesh end head 6 is respectively installed at the center of the opposite side of the connecting belt 18. The titanium mesh end head 6 is rolled into a cylindrical shape, and an end fixing belt 8 is installed in the center of the titanium mesh end head 6. A first limiting hole 4 is opened on one side of the end fixing belt 8. 6 has a cavity 19 inside, and the cavity 19 is connected to the interior of the titanium mesh prosthesis body 1 through a connecting hole 20. Two end reinforcement ribs 5 and a second mounting belt 14 are evenly installed on the titanium mesh end 6, and a number of second fixing heads 17 are evenly installed on the edge of one side of the titanium mesh end 6. A second center threaded hole 16 is provided in the center of the second fixing head 17, and second side threaded holes 15 are symmetrically provided on both sides of the second fixing head 17. The cylinder surrounded by the titanium mesh prosthesis body 1 has an inner diameter of approximately 5-9 mm, a diameter of the titanium mesh prosthesis body 1 is approximately 36-40 mm, and a diameter of the cylinder surrounded by the titanium mesh end 6 is approximately 9-11 mm. The 3D printing porosity range is 60-90%, the pore size range is 300-600 um, and the elastic modulus is 10.0-20.0 GPa.

[0027] Working principle: During use, the present invention uses 3D printing technology to print out the titanium mesh prosthesis body 1, the connecting belt 18 and the titanium mesh end head 6, which are integrally formed and customized in size according to the actual situation of the patient. There is no need for mold customization, low production cost, simple production, high production efficiency, and suitable for large-scale promotion. After printing is completed, the titanium mesh prosthesis body 1, the connecting belt 18 and the titanium mesh end head 6 are rolled into a cylindrical shape, and then the screws are respectively passed through the first center threaded hole 12, the first side threaded hole 13, the second side threaded hole 15 and the second center threaded hole 16, and the wound titanium mesh prosthesis body 1 and the titanium mesh end head 6 are fixed with screws, and then the fastening mechanism 7 is welded and fixed to the two ends of the connecting belt 18, and then the titanium mesh end heads 6 at both ends are inserted into the bone marrow cavity of the broken bone and the bone missing part, and then the fixing block 701 is rotated, which immediately drives the screw rod 702 to rotate. Since the screw rod 702 is connected to the threaded block 703 through threaded cooperation, the titanium mesh prosthesis body 1 and the titanium mesh end head 6 are fixed. The screw rod 702 rotates and moves in the center, which in turn drives the rotating block 709 to move in the center, and then drives the semi-arc fastening net 704 to move in the center, and then drives the connecting pin 707 to move in the center, and then drives the slider 706 to move in the center. The setting of the slider 706 and the slide rail 708 limits the movement direction of the semi-arc fastening net 704, and prevents the semi-arc fastening net 704 from rotating, so that the semi-arc fastening net 704 is used to clamp the titanium mesh prosthesis body 1 and the semi-arc fastening net 704 in the center. The joints of the long bones improve the stability of the fixation, and then the titanium mesh prosthesis main body 1 is clamped and fixed using double steel plates and bone screws, thereby completing the implantation and installation of the titanium mesh prosthesis main body 1. During the 3D printing process, the titanium mesh prosthesis main body 1 and the titanium mesh end 6 have a porosity range of 60-90% and a pore size range of 300-600um. The porosity is high, and the callus grows into the gap. The long bones and the titanium mesh prosthesis main body 1 become one, which improves the implantation effect of the titanium mesh prosthesis main body 1.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A structure of a 3D titanium mesh prosthesis for a steel plate, comprising a titanium mesh prosthesis body (1), characterized in that: The center of the titanium mesh prosthesis body (1) is evenly equipped with three main body fixing belts (3), and the titanium mesh prosthesis body (1) is rolled into a cylindrical shape. The top and bottom of the titanium mesh prosthesis body (1) are symmetrically equipped with connecting belts (18), and a connecting hole (20) is opened in the center of the connecting belt (18). A fastening mechanism (7) is installed at the edge position on the opposite side of the connecting belt (18), and a titanium mesh end head (6) is installed at the center of the opposite side of the connecting belt (18). The fastening mechanism (7) includes a fixing block (701), a screw (702), a threaded block (703), a semi-arc fastening mesh (704), an annular mounting plate (705), a slider (706), a connecting pin (707), a slide rail (708) and a rotating block (709). An annular mounting plate (705) is installed at the edge position on the opposite side of the connecting belt (18), and the outer wall of the annular mounting plate (705) is symmetrically equipped. There are two threaded blocks (703), a screw (702) is movably passed through the center of the threaded block (703), and the screw (702) and the threaded block (703) are connected by threaded matching, one end of the screw (702) is fixedly connected to the fixed block (701), and the other end of the screw (702) is rotatably connected to the rotating block (709), one side of the rotating block (709) is fixedly connected to a semi-arc fastening net (704), and the opposite side of the semi-arc fastening net (704) is respectively fitted with the bottom of both sides of the outer wall of the titanium mesh end (6), a connecting pin (707) is installed at the bottom center of the semi-arc fastening net (704), and the bottom of the connecting pin (707) is fixedly connected to a slider (706), the outer periphery of the slider (706) is sleeved with a slide rail (708), and the slide rail (708) is slidably connected to the slider (706), and the slide rail (708) is symmetrically installed on both sides of the top of the connecting belt (18).

2. The structure of a 3D titanium mesh prosthesis for steel plate according to claim 1, characterized in that: Two main body reinforcement ribs (2) and a first mounting belt (10) are evenly mounted on the titanium mesh prosthesis main body (1), and a plurality of first fixing heads (11) are evenly mounted on the edge of one side of the titanium mesh prosthesis main body (1), a first central threaded hole (12) is provided at the center of the first fixing head (11), and first side threaded holes (13) are symmetrically provided on both sides of the first fixing head (11).

3. The structure of a 3D titanium mesh prosthesis for steel plate according to claim 1, characterized in that: A second limiting hole (9) is provided on one side of the main body fixing belt (3).

4. The structure of a 3D titanium mesh prosthesis for steel plate according to claim 1, characterized in that: The titanium mesh end head (6) is rolled into a cylindrical shape, and an end head fixing belt (8) is installed at the center of the titanium mesh end head (6), and a first limiting hole (4) is opened on one side of the end head fixing belt (8).

5. The structure of a 3D titanium mesh prosthesis for steel plate according to claim 4, characterized in that: Two end reinforcement ribs (5) and a second mounting belt (14) are evenly mounted on the titanium mesh end head (6), and a plurality of second fixing heads (17) are evenly mounted on the edge of one side of the titanium mesh end head (6). A second central threaded hole (16) is provided at the center of the second fixing head (17), and second side threaded holes (15) are symmetrically provided on both sides of the second fixing head (17).

6. The structure of a 3D titanium mesh prosthesis for steel plate according to claim 1, characterized in that: The interior of the titanium mesh end head (6) is a cavity (19), and the cavity (19) is connected to the interior of the titanium mesh prosthesis body (1) through a connecting hole (20).

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