A joint spacer, in particular a knee spacer and a hip spacer is provided which is long-lasting and is sufficiently cushioned and abrasion-resistant and which can also support locally very high loads. A method for treating osteoarthritis by inserting a disk-shaped member into a joint of a patient is also disclosed.

A joint spacer, in particular a knee spacer and a hip spacer is provided which is long-lasting and is sufficiently cushioned and abrasion-resistant and which can also support locally very high loads. A method for treating osteoarthritis by inserting a disk-shaped member into a joint of a patient is also disclosed.

A bionic arm comprises a bionic palm and at least one finger. The at least one finger comprises a nanofiber actuator. A nanofiber actuator comprises a composite structure and a vanadium dioxide layer. The composite structure comprises a carbon nanotube wire and an aluminum oxide layer. The aluminum oxide layer is coated on a surface of the carbon nanotube wire, and the aluminum oxide layer and the carbon nanotube wire are located coaxially with each other. The vanadium dioxide layer is coated on a surface of the composite structure, and the vanadium dioxide layer and the composite structure are located non-coaxially with each other.

The present invention relates to compositions, methods, and devices for preventing irregular electromechanical waves in the myocardium that lead to pathological conditions as arrhythmia. In particular, the invention relates to compositions and methods to increase the conductivity of the myocardium to restore an impairment of the electrical conduction system of the heart. To that end substances with high conductivity, as carbon nanotube suspensions or metal nanowire suspensions, are injected in the myocardium at closely adjacent locations on circular or open lines or are introduced in patches of cardiomyocytes that are subsequently placed on the myocardium.

The present invention relates to compositions, methods, and devices for preventing irregular electromechanical waves in the myocardium that lead to pathological conditions as arrhythmia. In particular, the invention relates to compositions and methods to increase the conductivity of the myocardium to restore an impairment of the electrical conduction system of the heart. To that end substances with high conductivity, as carbon nanotube suspensions or metal nanowire suspensions, are injected in the myocardium at closely adjacent locations on circular or open lines or are introduced in patches of cardiomyocytes that are subsequently placed on the myocardium.

The invention provides a neural electrode, including a current generation device, a first and a second electrode. The current generation device is connected to the first and second electrodes through a conductive metal wire respectively. At least one of the first and second electrodes is a graphene electrode. The graphene electrode has soft texture and desirable stability to tolerate the repeated pressing and folding treatment, very high charge injection efficiency, and desirable in vivo stability, and is configured to electrically stimulate tissues and organs such as hearts and nerves to promote electrical stimulation and repair of neurons, to further promote regeneration of neural functions. The invention further provides use of a mineralized three-dimensional porous graphene foam material to prepare a bone defect filler. The bone defect filler has desirable biological compatibility, promotes cell proliferation, and accelerates and induces osteogenic differentiation of bone marrow mesenchymal stem cells.

Described is a fuel cell comprising an electrode catalyst assembly, and a two-dimensional (2D) amorphous carbon, wherein the 2D amorphous carbon has a crystallinity (C)≤0.8.

A carbon fiber implantable probe, a method of manufacturing the carbon implantable probe, and a method of implanting the probe in an implantation site, such as a nerve. The carbon fiber implantable probe includes a flexible probe body, a carbon fiber microarray (CFMA) composing one or more carbon fiber electrodes at least partially embedded in the flexible probe body, and a signal conductor connected to the one or more carbon fiber electrodes of the CFMA. In one example, the CFMA includes carbon fiber electrodes having conductive carbon coms partially surrounded by an insulative coating. The combination of the CFMA with the flexible probe body, made of silicone rubber for example, can improve implantation processes.

The disclosure relates to an expandable scaffold and a method for fabricating the scaffold. The expandable scaffold includes a three-dimensional porous structure comprising a composite material composed by a first material and a second material. The 3D porous structure has a tunable expansion capacity. When applied in a liquid, the 3D porous structure may uptake the liquid and expand from an original volume to an expansion volume up to 1000 times of the original volume. The 3D porous structure may be formed by a plurality of layers of the composite material, and architecture and shape of the layers of the composite material are arranged in accordance with a shape and a size of the expansion volume. Applications of the scaffold may include a bone or soft tissue regeneration system or a bleed stopping device.

The disclosure relates to an expandable scaffold and a method for fabricating the scaffold. The expandable scaffold includes a three-dimensional porous structure comprising a composite material composed by a first material and a second material. The 3D porous structure has a tunable expansion capacity. When applied in a liquid, the 3D porous structure may uptake the liquid and expand from an original volume to an expansion volume up to 1000 times of the original volume. The 3D porous structure may be formed by a plurality of layers of the composite material, and architecture and shape of the layers of the composite material are arranged in accordance with a shape and a size of the expansion volume. Applications of the scaffold may include a bone or soft tissue regeneration system or a bleed stopping device.