A bionic ligament assistive device based on flexible vibration technology

Abstract

The present invention relates to the technical field related to bionic ligament medical devices, and in particular to a bionic ligament auxiliary device based on flexible vibration technology, comprising a shell, a fixing rod fixedly installed on the inner surface of the shell, one end of the fixing rod is sleeved with a wire release barrel, a back plate fixedly installed on the inner wall surface of the shell, a hollow roller fixedly connected to the back plate, a piezoelectric vibrator mechanism is arranged on the inner side of the hollow roller, a limiting mechanism is fixedly connected to one side of the hollow roller, and an ultraviolet irradiation mechanism is fixedly connected to the outer ring surface of the hollow roller. The device converts rigid vibration into flexible vibration to achieve the effect of eliminating the internal stress of the bionic ligament and preventing its surface from being damaged. Through the design of an infinitely adjustable ultraviolet irradiation system, local molecular chains are rearranged and residual stress is released. Various ingenious designs achieve the optimization of the mechanical properties of the bionic ligament.

Description

Technical Field

[0001] The present invention relates to the technical field related to bionic ligament medical devices, and in particular to a bionic ligament auxiliary device based on flexible vibration technology. Background Art

[0002] Synthetic bionic ligaments are mainly made of polyethylene fishing line, which provides new solutions for a variety of medical and engineering applications. Especially in the medical field, the development of bionic ligaments has brought revolutionary progress to ligament repair and biomechanics research. Traditionally, cadaver models are the main way to conduct ligament experiments, but obtaining cadaver specimens is not only expensive, but also limited by supply chain, ethical issues and usage conditions. As an economical and convenient alternative, bionic ligament models provide laboratories and hospitals with efficient research and training tools. Although bionic ligaments have shown excellent application potential in many fields, a key issue is often overlooked: stress. In the field of materials such as metal steel, stress is regarded as a crucial physical quantity because it directly affects the strength, plasticity, fatigue life and safety of the material. However, in the field of bionic materials and biomechanics, the importance of material stress is often not given enough attention.

[0003] Bionic ligaments are subjected to complex mechanical environments during application, especially when the human body is moving. Every time the joint moves, stretches or bears weight, the ligament will be subjected to dynamic stress. This stress not only affects its immediate function, but also determines its durability and degradation rate in long-term use. If the bionic ligament cannot adapt to this complex stress distribution, it may cause its performance to decline or fail prematurely in long-term use. Through stress relief treatment, the flexibility and ductility of bionic ligaments in parts such as the wrist and ankle can be enhanced, so that they can stretch more naturally during activities, while reducing internal stress, improving the long-term stability of the material and its reliability in the body, and reducing the risk of fracture caused by stress concentration. Therefore, it is particularly important to design a device that can reduce the internal stress of the bionic ligament while keeping its surface intact and other excellent properties unchanged. Summary of the invention

[0004] The present invention proposes a bionic ligament auxiliary device based on flexible vibration technology to solve the problems raised in the above-mentioned background technology. Every time the joint moves, stretches or bears weight, the ligament will be subjected to stress. These stresses not only affect their immediate functions, but also determine their long-term durability and degradation rate. If the bionic ligament cannot adapt to the complex stress distribution, its performance may decline or even fail prematurely during long-term use. The device is designed to help the ligament better cope with these stresses and improve its stability and service life.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bionic ligament auxiliary device based on flexible vibration technology, comprising a shell, a fixing rod is fixedly installed on the inner surface of the shell, a pay-off reel is sleeved on one end of the fixing rod, a back plate is fixedly installed on the inner wall surface of the shell, a hollow roller is fixedly connected to the back plate, a piezoelectric vibrator mechanism is arranged on the inner side of the hollow roller, a limiting mechanism is fixedly connected to one side of the hollow roller, an ultraviolet irradiation mechanism is fixedly connected to the outer ring surface of the hollow roller, and a winding mechanism is arranged on the inner lower surface of the shell.

[0006] The piezoelectric vibrator mechanism includes a fixed plate, a support base, a piezoelectric material, an electrode, a connecting plate, silicone rubber and a bump. Fixed plates are welded on both sides of the inner wall of the hollow roller. The surface of the fixed plate is threadedly connected to the support base. Piezoelectric material is arranged at both ends of the support base. Both ends of the piezoelectric material are covered with electrodes. One side of the electrode is fixedly connected to a connecting plate. Silicon rubber is pasted on the surface of the connecting plate. The surface of the silicone rubber is provided with a bump.

[0007] The limiting mechanism includes a first fixed frame, a connecting rod, a limiting block, a limiting ring, a baffle, a first threaded tube and a fixing bolt. The first fixed frame is fixedly connected to the two end surfaces of the hollow roller, a connecting rod is fixedly installed on one side of the first fixed frame, a limiting block is welded on one side of the surface of the connecting rod, limiting rings are sleeved on both ends of the connecting rod, a baffle is fixedly connected to one side of the limiting ring, a first threaded tube is welded through one side of the limiting ring, and a fixing bolt is threadedly connected to one end of the first threaded tube.

[0008] The ultraviolet irradiation mechanism includes a second fixed frame, a support frame, an electric slide, a fixed platform, a UV-LED lamp and a collimating lens. The outer surfaces of both ends of the hollow roller are fixedly connected with the second fixed frame, one end of the second fixed frame is fixedly installed with the support frame, both side surfaces of the support frame are fixedly installed with the electric slide, one end of the electric slide is threadedly connected with the fixed platform, a UV-LED lamp is fixedly installed on one side surface of the fixed platform, and a collimating lens is fixedly installed on the surface of the UV-LED lamp.

[0009] The winding mechanism includes a support plate, a driving motor, a connecting shaft, a groove, a hard block, a rubber block, a second threaded tube, a tightening rod and a winding drum. The support plate is fixedly installed on the inner lower surface of the shell, and the driving motor is fixedly installed on one side of the support plate. The output end of the driving motor is connected to the connecting shaft, and a groove is provided on the surface of the connecting shaft. A hard block is placed at one end of the groove, and a rubber block is bonded to the surface of the hard block. A second threaded tube is welded to one end of the connecting shaft, and a tightening rod is connected to one end of the second threaded tube. A winding drum is sleeved on one end of the connecting shaft.

[0010] Preferably, the hollow rollers are provided in five groups and are distributed in an "S"-shaped structure.

[0011] Preferably, the piezoelectric material has a five-layer structure, which is PVDF piezoelectric film-PZT ceramic-PVDF piezoelectric film-PZT ceramic-PVDF piezoelectric film in sequence.

[0012] Preferably, the electrode is made of silver sheet, and the electrode covers the upper and lower surfaces of the piezoelectric material.

[0013] Preferably, two groups of the limiting mechanisms are provided and are distributed between the upper and lower groups of hollow rollers.

[0014] Preferably, the ultraviolet irradiation mechanism is provided with two groups, and is distributed between the three groups of hollow rollers in the center, and is staggered up and down.

[0015] Preferably, the position of the collimating lens corresponds one-to-one to the position of the lamp beads on the surface of the UV-LED lamp.

[0016] Preferably, the size of the tightening rod matches the size of the inner ring of the connecting shaft, and the tightening rod is threadedly connected to the second threaded pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The piezoelectric material is a multi-layer stacking design of PZT ceramic (rigid) and PVDF (flexible). This design can obtain greater vibration output in a smaller volume, and the rigid-flexible hybrid design makes it have both high sensitivity and good flexibility, which further improves the service life and reduces energy consumption.

[0019] 2. The unique silicone rubber design converts vibration into flexible vibration. The unique material selection enables it to exhibit excellent conductivity under low-frequency vibration, while having little effect on the mechanical properties of the bionic ligament.

[0020] 3. The design of the stepless adjustable UV irradiation system and the collimating lens can concentrate the divergent UV light into a parallel beam, avoid uneven light intensity distribution, promote local molecular chain rearrangement, and release residual stress.

[0021] 4. The hollow roller "S track design" avoids stress concentration through its own curved structure, enhances the bionic ligament's vibration reception effect, and efficiently transmits vibration through silicone rubber, improving the overall performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the fixed rod and the wire-releasing drum cooperating with each other in the present invention;

[0024] Figure 3 This is a schematic diagram of the distribution structure of the hollow rollers of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the hollow roller and the silicone rubber cooperating with each other in the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the support base and the piezoelectric material cooperating with each other in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the connection rod and the limit ring cooperating with each other in the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the stop ring and the fixing bolt cooperating with each other in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the ultraviolet irradiation mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the exploded structure of the winding mechanism of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure in which the groove, hard block and rubber block cooperate with each other in the present invention.

[0032] In the figure: 1, shell; 2, fixing rod; 3, pay-off drum; 4, back plate; 5, hollow roller; 6, piezoelectric vibrator mechanism; 601, fixing plate; 602, supporting base; 603, piezoelectric material; 604, electrode; 605, connecting plate; 606, silicone rubber; 607, bump; 7, limiting mechanism; 701, first fixing frame; 702, connecting rod; 703, limiting block; 704, limiting ring; 705, baffle; 706, first threaded tube; 707, fixing bolt; 8, ultraviolet irradiation mechanism; 801, second fixing frame; 802, supporting frame; 803, electric slide; 804, fixing table; 805, UV-LED lamp; 806, collimating lens; 9, winding mechanism; 901, supporting plate; 902, driving motor; 903, connecting shaft; 904, groove; 905, hard block; 906, rubber block; 907, second threaded tube; 908, tightening rod; 909, winding drum. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the examples, in order to avoid confusing the present invention, well-known circuits, power supplies, software or methods are not described in detail.

[0034] This embodiment discloses a bionic ligament auxiliary device based on flexible vibration technology, such as Figure 1-10 , comprising a shell 1, a fixing rod 2 is fixedly installed on the inner surface of the shell 1, one end of the fixing rod 2 is sleeved with a wire-releasing drum 3, a back plate 4 is fixedly installed on the inner wall surface of the shell 1, a hollow roller 5 is fixedly connected to the back plate 4, a piezoelectric vibrator mechanism 6 is arranged on the inner side of the hollow roller 5, a limiting mechanism 7 is fixedly connected to one side of the hollow roller 5, an ultraviolet irradiation mechanism 8 is fixedly connected to the outer ring surface of the hollow roller 5, and a winding mechanism 9 is arranged on the inner lower surface of the shell 1.

[0035] The piezoelectric vibrator mechanism 6 includes a fixing plate 601, a support base 602, a piezoelectric material 603, an electrode 604, a connecting plate 605, a silicone rubber 606 and a bump 607. The fixing plates 601 are welded on both sides of the inner wall of the hollow roller 5. The surface of the fixing plate 601 is threadedly connected to the support base 602. The piezoelectric material 603 is arranged at both ends of the support base 602. The two ends of the piezoelectric material 603 are covered with electrodes 604. One side of the electrode 604 is fixedly connected to the connecting plate 605. The surface of the connecting plate 605 is pasted with silicone rubber 606. 6. The surface of the silicone rubber 606 is provided with a bump 607. Through the arrangement of the fixing plate 601, the supporting base 602, the piezoelectric material 603, the electrode 604, the connecting plate 605, the silicone rubber 606 and the bump 607, based on the piezoelectric effect, when an alternating voltage is applied to the piezoelectric material 603, tiny mechanical vibrations will be generated. During the transportation of the bionic ligament, the tiny mechanical vibrations will adhere to the surface of the silicone rubber 606. When the silicone rubber 606 and the bump 607 generate vibrations, the vibrations will be transmitted to the bionic ligament to achieve stress release.

[0036] The limiting mechanism 7 includes a first fixing frame 701, a connecting rod 702, a limiting block 703, a limiting ring 704, a baffle 705, a first threaded tube 706 and a fixing bolt 707. The first fixing frame 701 is fixedly connected to the surfaces of both ends of the hollow roller 5. A connecting rod 702 is fixedly installed on one side of the first fixing frame 701. A limiting block 703 is welded on one side of the surface of the connecting rod 702. A limiting ring 704 is sleeved on both ends of the connecting rod 702. A baffle 705 is fixedly connected to one side of the limiting ring 704. A first threaded tube 706 is welded on one side of the limiting ring 704. Threaded tube 706, one end of the first threaded tube 706 is threadedly connected with a fixing bolt 707, through the arrangement of the first fixing frame 701, the connecting rod 702, the limiting block 703, the limiting ring 704, the baffle 705, the first threaded tube 706 and the fixing bolt 707, the limiting ring 704 is slid at both ends of the connecting rod 702, so that the baffle 705 on one side of the limiting ring 704 can be against the two sides of the bionic ligament, and at the same time, the limiting ring 704 can be fixed under the action of the rotating fixing bolt 707, thereby completing the limitation of the bionic ligament during the transportation process.

[0037] The ultraviolet irradiation mechanism 8 includes a second fixing frame 801, a support frame 802, an electric slide 803, a fixing table 804, a UV-LED lamp 805 and a collimating lens 806. The outer surfaces of both ends of the hollow roller 5 are fixedly connected with the second fixing frame 801, one end of the second fixing frame 801 is fixedly installed with the support frame 802, and the electric slide 803 is fixedly installed on both sides of the support frame 802. One end of the electric slide 803 is threadedly connected to the fixing table 804, and one side surface of the fixing table 804 is fixedly installed with a UV-LED lamp 805. V-LED lamp 805, a collimating lens 806 is fixedly installed on the surface of UV-LED lamp 805. Through the arrangement of second fixing frame 801, support frame 802, electric slide 803, fixing table 804, UV-LED lamp 805 and collimating lens 806, the height of UV-LED lamp 805 can be adjusted through electric slide 803, and UV-LED lamp 805 can control the light intensity through stepless adjustment knob to achieve low-energy irradiation, and the power density (W / cm²) of the light source is controlled within the range of 10 mW / cm² to 100 mW / cm². UV-LED lamp 805 is a light source suitable for precise control of wavelength and energy, and has the advantages of high efficiency, low power consumption and adjustable output. UV-LED lamp 805 can emit ultraviolet light of specific wavelengths, including 365 nm and 254 nm, which can induce weak chemical reactions (such as cross-linking), but have low energy and will not degrade materials on a large scale.

[0038] The winding mechanism 9 includes a support plate 901, a drive motor 902, a connecting shaft 903, a groove 904, a hard block 905, a rubber block 906, a second threaded tube 907, a tightening rod 908 and a winding drum 909. The support plate 901 is fixedly installed on the inner lower surface of the shell 1, and the drive motor 902 is fixedly installed on one side of the support plate 901. The output end of the drive motor 902 is connected to the connecting shaft 903, and a groove 904 is opened on the surface of the connecting shaft 903. A hard block 905 is placed at one end of the groove 904, and a rubber block 906 is bonded to the surface of the hard block 905. A second threaded tube 907 is welded to one end of the connecting shaft 903, and a tightening rod 908 is connected to one end of the second threaded tube 907. A winding drum 909 is sleeved on one end of the connecting shaft 903.

[0039] Furthermore, five groups of hollow rollers 5 are provided and distributed in an "S"-shaped structure.

[0040] Furthermore, the piezoelectric material 603 has a five-layer structure, which is PVDF piezoelectric film-PZT ceramic rigidity-PVDF piezoelectric film-PZT ceramic rigidity-PVDF piezoelectric film in sequence.

[0041] Furthermore, the material of the electrode 604 is a silver sheet, and the electrode 604 covers the upper and lower surfaces of the piezoelectric material 603 .

[0042] Furthermore, two groups of limiting mechanisms 7 are provided and are distributed between the upper and lower groups of hollow rollers 5 .

[0043] Furthermore, two groups of ultraviolet irradiation mechanisms 8 are provided and are distributed between the three central groups of hollow rollers 5, and are staggered up and down, so as to release stress by micro-light induction: short-term ultraviolet irradiation, especially under low energy conditions, may not cause significant degradation of the material surface, but may produce a slight molecular chain relaxation effect, especially for polymer materials (such as polyethylene), low-energy ultraviolet irradiation may promote local molecular chain rearrangement and release residual stress through micro-thermal effects or absorption of photon energy.

[0044] Furthermore, the position of the collimating lens 806 corresponds one-to-one to the position of the lamp beads on the surface of the UV-LED lamp 805. By adding the collimating lens 806 in front of the ultraviolet light source, the directionality and irradiation uniformity of the ultraviolet light beam are ensured. The collimating lens 806 can concentrate the divergent ultraviolet light into a parallel beam to avoid uneven light intensity distribution.

[0045] Furthermore, the size of the tightening rod 908 matches the size of the inner ring of the connecting shaft 903 , and the tightening rod 908 is threadedly connected to the second threaded tube 907 .

[0046] Working principle: First, the bionic ligament is placed on one end of the fixed rod 2 through the pay-off drum 3. The pay-off drum 3 is of the type that can rotate by itself. At the same time, the pay-off drum 3 and the fixed rod 2 are fixed by the friction rubber on the surface. Then, one end of the bionic ligament is passed along the distribution of the hollow roller 5 in sequence, and the bionic ligament is moved on the upper surface of the silicone rubber 606. By applying an alternating voltage to the piezoelectric material 603 and the electrode 604, it vibrates, and synchronously drives the silicone rubber 606 on the surface of the connecting plate 605 to vibrate. The vibration generated by the silicone rubber 606 and the bump 607 will be applied to the bionic ligament. One end of the support frame 802 adjusts the height of the UV-LED lamp 805 through the electric slide 803, so that the UV-LED lamp 805 can cooperate with the collimating lens 806 to irradiate the surfaces on both sides of the bionic ligament, and finally, one end of the bionic ligament is wound on the winding drum 909, and the connecting shaft 903 is driven to rotate by the driving motor 902, so that the winding drum 909 can continue to be wound. After the winding is completed, it is only necessary to rotate the tightening rod 908. After the tightening rod 908 is taken out, the hard block 905 and the rubber block 906 will release the squeezing of the winding drum 909, so that the winding drum 909 can be quickly removed.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A bionic ligament auxiliary device based on flexible vibration technology, comprising a shell (1), characterized in that: A fixing rod (2) is fixedly mounted on the inner surface of the shell (1), one end of the fixing rod (2) is sleeved with a wire-releasing drum (3), a back plate (4) is fixedly mounted on the inner wall surface of the shell (1), a hollow roller (5) is fixedly connected to the back plate (4), a piezoelectric vibrator mechanism (6) is arranged on the inner side of the hollow roller (5), a limiting mechanism (7) is fixedly connected to one side of the hollow roller (5), an ultraviolet irradiation mechanism (8) is fixedly connected to the outer ring surface of the hollow roller (5), and a winding mechanism (9) is arranged on the inner lower surface of the shell (1); The piezoelectric vibrator mechanism (6) comprises a fixing plate (601), a support base (602), a piezoelectric material (603), an electrode (604), a connecting plate (605), silicone rubber (606) and a bump (607); the fixing plates (601) are welded to both sides of the inner wall of the hollow roller (5); the surface of the fixing plate (601) is threadedly connected to the support base (602); both ends of the support base (602) are provided with piezoelectric material (603); both ends of the piezoelectric material (603) are covered with electrodes (604); one side of the electrode (604) is fixedly connected to the connecting plate (605); the surface of the connecting plate (605) is adhered with silicone rubber (606); and the surface of the silicone rubber (606) is provided with a bump (607); The limiting mechanism (7) comprises a first fixing frame (701), a connecting rod (702), a limiting block (703), a limiting ring (704), a baffle (705), a first threaded tube (706) and a fixing bolt (707); the first fixing frame (701) is fixedly connected to the surfaces of both ends of the hollow roller (5); a connecting rod (702) is fixedly mounted on one side of the first fixing frame (701); a limiting block (703) is welded to one side of the surface of the connecting rod (702); limiting rings (704) are sleeved on both ends of the connecting rod (702); a baffle (705) is fixedly connected to one side of the limiting ring (704); a first threaded tube (706) is welded through one side of the limiting ring (704); and a fixing bolt (707) is threadedly connected to one end of the first threaded tube (706); The ultraviolet irradiation mechanism (8) comprises a second fixing frame (801), a support frame (802), an electric slide (803), a fixed platform (804), a UV-LED lamp (805) and a collimating lens (806); the outer surfaces of both ends of the hollow roller (5) are fixedly connected to the second fixing frame (801); one end of the second fixing frame (801) is fixedly mounted with the support frame (802); both side surfaces of the support frame (802) are fixedly mounted with the electric slide (803); one end of the electric slide (803) is threadedly connected with the fixed platform (804); the UV-LED lamp (805) is fixedly mounted on one side surface of the fixed platform (804); and the collimating lens (806) is fixedly mounted on the surface of the UV-LED lamp (805); The winding mechanism (9) comprises a support plate (901), a drive motor (902), a connecting shaft (903), a groove (904), a hard block (905), a rubber block (906), a second threaded tube (907), a tightening rod (908) and a winding drum (909); the support plate (901) is fixedly mounted on the inner lower surface of the housing (1); the drive motor (902) is fixedly mounted on one side of the support plate (901); and the output end of the drive motor (902) is fixedly mounted on the output end of the drive motor (902). A connecting shaft (903) is connected, a groove (904) is provided on the surface of the connecting shaft (903), a hard block (905) is placed at one end of the groove (904), a rubber block (906) is bonded to the surface of the hard block (905), a second threaded tube (907) is welded to one end of the connecting shaft (903), a tightening rod (908) is connected to one end of the second threaded tube (907), and a winding drum (909) is sleeved on one end of the connecting shaft (903).

2. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The hollow rollers (5) are arranged in five groups and are distributed in an "S"-shaped structure.

3. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The piezoelectric material (603) has a five-layer structure, which is PVDF piezoelectric film-PZT ceramic-PVDF piezoelectric film-PZT ceramic-PVDF piezoelectric film in sequence.

4. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The electrode (604) is made of a silver sheet, and the electrode (604) covers the upper and lower surfaces of the piezoelectric material (603).

5. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The limiting mechanisms (7) are provided in two groups and are distributed between the upper and lower groups of hollow rollers (5).

6. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The ultraviolet irradiation mechanisms (8) are provided in two groups and are distributed between the three groups of hollow rollers (5) in the center and are staggered up and down.

7. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The position of the collimating lens (806) corresponds one-to-one to the position of the lamp beads on the surface of the UV-LED lamp (805).

8. The bionic ligament auxiliary device based on flexible vibration technology according to claim 1 is characterized in that: The size of the tightening rod (908) matches the size of the inner ring of the connecting shaft (903), and the tightening rod (908) is threadedly connected to the second threaded tube (907).

Images