30results about How to "Adequate mechanical support" patented technology

The invention provides a tissue repair scaffold, as well as a preparation method and usage thereof. At least one surface of the tissue repair scaffold comprises a composite fiber which comprises an adhesion factor and a hydrophobic synthetic material. The surface comprising the composite fiber enables the tissue repair scaffold of the invention to be endowed with good tissue adhesive force and conformability and adhere well to a tissue anatomic structure. The tissue repair scaffold can be either sutured or non-sutured.

The invention relates to a tricuspid valve edge-to-edge clip device capable of being implanted through a catheter. The tricuspid valve edge-to-edge clip device comprises a rotating propelling operating rod, a main body support threaded rod and a nickel-titanium alloy dish-shaped dish, wherein the rotating propelling operating rod covers outside a connecting pushing rod, the connecting pushing rod is connected with the main body support threaded rod arranged under the connecting pushing rod through a cylindrical pin arranged at the lower end of the connecting pushing rod, the external side of the main body support threaded rod is in sleeved connection with a rotating support mechanism, connecting rods extending out of two sides of the rotating support mechanism are respectively connected with needle plates on the tricuspid valve arranged at two sides, the lower ends of the needle plates on tricuspid valve is connected with the lower end of the main body support threaded rod, two sides of the lower end of the main body support threaded rod are symmetrically connected with and provided with an outwards-extended base plate under the tricuspid valve, and the middle of the base plate under the tricuspid valve is fixed with the elliptic nickel-titanium alloy dish-shaped dish in a clamping way. The tricuspid valve edge-to-edge clip device is simple in structure, good in biocompatibility and tracing performance, good in mechanical support force, good in compliance and shape memory ability, and has little wound to patients in use.

Disclosed is a packaging assembly manufacturing method, including: forming a lead frame on a substrate, wherein the lead frame includes a plurality of leads with exposed first surfaces; mounting a plurality of layers of electronic components on the lead frame, so that the electronic component on at least one layer is electrically connected with the first surfaces of at least one group of leads inthe plurality of leads; and removing at least portion of the substrate, so that second surfaces of the plurality of leads opposite the first surfaces are exposed for external connection. According tothe method, the semiconductor structure does not need to be overturned in the manufacturing process, the yield of the packaging assembly can be improved, the cost is reduced, and the packaging qualityis improved.

The invention discloses a preparation method and applications of through-hole phase-transfer type IPMC taking PVDF / PVP / IL as a basal membrane. The IPMC is composed of a basal membrane, carbon nanotubemembrane electrodes fixed on two sides of the basal membrane, and an external electric signal input system. The through-hole phase-transfer type IPMC has high porosity. The PVDF / PVP / IL basal membraneis prepared by a phase transfer technology and a hypochloric acid PVP removing technology; the porosity of the basal membrane is large therefore, IPMC can absorb more ionic liquid, the IPMC can be stably driven for a long term; the through-hole phase-transfer type IPMC is hydrophobic, and the driving of IPMC obtained through IL (ionic liquid) driving is more stable. The through-hole phase-transfer type IPMC contains a large amount of channels, the ionic migration amount in IPMC is increased, greater pressure difference and ionic flows are formed in IPMC, greater driving is formed in an electric actuator, and at the same time, a stronger mechanical performance is provided.

The invention discloses a silicon pole plate and a preparation method thereof. The silicon pole plate is made of doped conductive crystalline silicon material, and has an internal cooling medium flow channel, a front reducing agent flow channel and / or a reverse oxidant flow channel, And the internal cooling medium flow channel, the front reducing agent flow channel and / or the reverse oxidant flow channel are respectively provided with a silicon plate inlet and outlet combination connected thereto; compared with the metal plate and graphite plate in the prior art Or composite material pole plate, the silicon pole plate proposed by the present invention has better advantages in life, cost, efficiency and power density, and is undoubtedly of great significance and core role in promoting the mass industrialization of fuel cells.

The invention discloses a composite graphite grounding conductor and a manufacturing method and an application method of the composite graphite grounding conductor. The composite graphite grounding conductor is characterized by comprising a corrosion-resistant sleeve, a high-carbon graphite inner core is filled into the sleeve, and a group of through holes are distributed in the sleeve. According to the composite graphite grounding conductor and the manufacturing method and the application method of the composite graphite grounding conductor, the expanded graphite core is wrapped by a high-strength hot galvanized tube or a stainless steel tube with holes, so that high electrical conductivity is ensured, and the composite graphite grounding conductor has high mechanical strength and certain toughness and is not prone to fracture. Due to the special structure, electrical conduction is mainly completed by the graphite core, so that the mechanical strength is kept even if a metal armor rusts because of oxidation, and the electrical conductivity of the whole product will not be affected. The composite graphite grounding conductor organically combines the electrical conductivity and corrosion resistance of the graphite and physical performance of metal material and thus has the advantages of being compact in texture and resistant to pressure, tension and impact due to high strength.

The invention discloses a bioabsorbable compound stent. An ultra-fine grain magnesium alloy stent is used as a matrix, a completely degradable polymer material is coated on the surface of the ultra-fine grain magnesium alloy stent as an anticorrosion and mechanical-support protective layer, and a medicinal carrier coating is applied outside the protective layer. The magnesium alloy material is a three-component alloy or multi-component alloy composed of one or the combination of the following alloy systems: Mg-Fe, Mg-Mn, Mg-Zn, Mg-Ca, Mg-Y and Mg-RE. The stent can provide sufficient mechanical support for blood vessels and effectively avoid resilience. The stent can effectively reduce the overhigh corrosion rate of the magnesium alloy after being implanted into the human body, and ensure that the blood vessels can gain sufficient mechanical support in the early endothelialization period, so that the service time of the stent and the blood vessel endothelialization time are optimally matched, and the stent can be completely degraded within an appropriate time.

The invention provides a tissue repair bracket and its preparation method and application. The tissue repair scaffold includes at least one composite fiber layer, and the composite fiber layer includes composite fibers composed of adhesion factors and hydrophobic synthetic materials. The composite fiber layer can further form a porous three-dimensional network structure with hydrophilic materials. The tissue repair scaffold is used for meningeal repair, meninge repair, tissue engineering scaffold material, artificial skin, wound auxiliary material, biofilm, wound covering material, hemostatic material, postoperative anti-adhesion material or cosmetic material.

A degradable iron-based implant and a preparation method thereof. The implant is composed of an iron matrix and carbon nanotubes evenly distributed therein. The preparation steps are: taking carbon nanotubes and iron powder, and stirring mechanically under the protection of argon Mixing and ball milling followed by a selective laser melting process under argon protection resulted in a degradable iron-based implant. The beneficial effect of the present invention is that carbon nanotubes are used as cathodes for galvanic corrosion, and the degradation rate of the iron-based implant is greatly improved by utilizing its characteristics of high standard potential, good electrical conductivity and large specific surface area, and solves the problem of conventional Iron-based implants degrade too slowly, and the prepared iron-based implants can provide sufficient mechanical support, and the preparation method of the present invention can achieve uniform dispersion of carbon nanotubes in the iron matrix and maintain structural integrity , so as to give full play to its improvement effect on the degradation behavior of iron-based implants.

The invention provides a boron-doped diamond thin film electrode foamed ceramic matrix, which comprises a core, a middle part attached to the outer surface of the core at intervals, and a boron-doped diamond on the exposed surface of the core at the interval between the outer surface of the middle part and the middle part. The film deposition part; the core part and the boron-doped diamond film deposition part are made of ceramic material, the middle part is an energy-absorbing material whose outer surface is covered with heat insulating material, and the boron-doped diamond film deposition part is a foam-like structure composed of interpenetrating holes . The core part of the present invention provides mechanical support for the substrate, shares part of the fluid impact force acting on the electrode installation position, and reduces the possibility of the electrode leaving the installation position; The impact force generated by the interpenetrating holes of the boron-diamond film deposition part is effectively absorbed by the middle part when it hits the middle part, avoiding the problem that the impact force is too large when the impact force penetrates the entire electrode, which causes the matrix to be damaged along the hole wall and the electrode life is shortened. .