Device based on liquid metal and used for repairing defective peripheral nerve function
A technology of liquid metal and peripheral nerves, applied in the field of medical devices, can solve the problems of abnormal conduction of excitatory signals of the body, muscle atrophy, long regeneration time, etc., avoid secondary neurosurgery, good flexibility and conductivity, and improve Quality of Life Effects
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Embodiment 1
[0030] Such as figure 1 with figure 2 As shown, a liquid metal-based device for functional repair of defective peripheral nerves includes a concentric sleeve structure composed of an outer tube 1 and an inner tube 2, and the inner tube 2 is arranged with biodegradable materials. The loose porous structure is used as a scaffold, and then filled with nerve growth-promoting substances 3, the middle part of the channel between the outer wall of the inner tube 2 and the inner wall of the outer tube 1 is injected with a liquid metal material 4, and conductive nanomaterials 5 are placed at both ends.
[0031] Wherein, the outer tube 1 and the inner tube 2 are selected from non-toxic, biocompatible and flexible biomaterials, such as chitosan, collagen, alginic acid and the like are used here. The concentric casing structure is made by precise micro-machining method, which is used as a catheter for repairing damaged nerves.
[0032] Secondly, using micro-molding processing technolog...
Embodiment 2
[0037] Such as Figure 4 with Figure 5 As shown, another form of a liquid metal-based device for functional repair of defective peripheral nerves includes a multi-channel catheter 6 with multiple axial channels, and the diameter of the inner channel of the multi-channel catheter 6 ranges from about 5 -50 μm, the pore size range of the outer channel is approximately 100-200 μm. Nerve-growth-stimulating substances 3 are filled in the inner channel, liquid metal material 4 is injected into the middle of the outer channel, and conductive nanomaterials 5 are placed in both ends.
[0038] Among them, the multi-channel catheter 6 is first made of chitosan to make a hollow nerve catheter, and then one or more of chitosan, collagen and gelatin is poured into the tube, and the tube is made of micro-machining technology. In the multi-channel structure, the channel in the tube is set as a structure with a larger outer diameter and a smaller inner diameter.
[0039]Secondly, using a mi...
Embodiment 3
[0043] Such as Figure 7 As shown, another form of a liquid metal-based device for functional repair of defective peripheral nerves includes a hollow sheet structure 7, one side of which is coated with a nerve growth-promoting substance 3, and liquid metal material is injected into the middle of the hollow part 4. Conductive nano-materials 5 are placed at both ends.
[0044] Among them, the hollow sheet-like structure 7 is made of one or more of collagen, chitosan, alginic acid, etc. to make a hydrogel-like substance, and then cut into a hollow sheet-like structure by using laser cutting technology, It is used to repair broken nerves that are not long in length, do not require bridges, and can be sutured directly. Wherein, the thickness of the sheet structure is 300-500 μm, and the thickness of the hollow part is 100-200 μm.
[0045] Then, one side of the hollow sheet-like structure 7 is coated with the nerve growth-promoting substance 3 . Using a micro-injection device, in...
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