摘要:
A variable focus liquid lens includes: a lens barrel which is configured to include a first cavity to contain first and second liquids which are not mixed with each other in upper and lower portions of the first cavity, respectively; a fluid pressure driving unit which is configured to include a second cavity, a fluid pressure generating groove, and an actuator generating a fluid pressure on the second liquid so as to adjust the fluid pressure of the second liquid by using the actuator; a first transparent elastic membrane sealing an upper portion of the first cavity of the lens barrel; and a conductive transparent substrate sealing a lower portion of the second cavity of the fluid pressure driving unit. The focal length is adjusted by changing the curvatures of the surfaces of the first and second liquids and the curvature of the first transparent elastic membrane by a voltage.
摘要:
A spinal fixation apparatus has a segment flexible rod for connecting pedicle screws and a transverse link for spacing out the rods, which are made from a shape memory alloy, thereby easily and simply connecting the rods and the pedicle screws. The rods can be easily and simply fit to the misaligned pedicle screw, even if there is a failure of alignment of the pedicle screws in surgery. The transverse link can be easily set up on a pair of the longitudinal rods, even if the longitudinal rods are declined or are not in parallel.
摘要:
The present invention relates to a spinal fixation apparatus having a segment flexible rod for connecting pedicle screws and a transverse link for spacing out the rods, which are made from a shape memory alloy, thereby easily and simply connecting the rods and the pedicle screws. According to the present invention, it can easily and simply fit the rods to the misaligned pedicle screw, even if it may be a failure of alignment of the pedicle screws in surgery. Also, it can easily set up the transverse link on a pair of the longitudinal rods, even if the longitudinal rods are declined or are not in parallel.
摘要:
A fluid collecting apparatus inserted in a borehole for collecting fluid in the borehole. The fluid collecting apparatus may include a first packer and a second packer which are selectively adhered to an inside of the borehole, a first supply pipe and a second supply pipe which supply expansion fluid to each of the first packer and the second packer, and a guide tube which guides fluid in a collecting space between the first packer and the second packer to an outside of the borehole. Also, the second supply pipe moves with the second packer in a longitudinal direction of the borehole, and a passage which does not communicate with the first supply pipe is formed. Accordingly, the fluid collecting apparatus may independently control the first and second packers, and thus fluid in a desired depth and region within the borehole may be easily collected.
摘要:
The present invention relates to a rod capable of securely connecting pedicle screws in a pedicle screw system for correcting a damaged or transformed spine and a method and an apparatus for fabricating the same and, more particularly, to a flexible pedicle rod with superelasticity in order to provide a flexibility to a fixation between spine segments and a method and an apparatus capable of fabrication the same in mass production. The apparatus according to the present invention comprises a body; an X- and Y-axis moving element mounted on a top surface of the body, the X- and Y-axis moving element simultaneously moving in X-axis and Y-axis directions to wind a material at an angle of 90 degrees; a magazine mounted on the X- and Y-axis moving element to load a material; a material withdrawing element for withdrawing materials one by one from the magazine; and a material molding element mounted on the X- and Y-axis moving element, the material molding element gripping both ends of the material withdrawn from the material withdrawing element and rotating to mold a portion of the material in a spring shape.
摘要:
A semi-rigid spinal apparatus has a first pedicle screw array and a second pedicle screw array substantially parallel to the first pedicle screw array. A first rod array is associated with the first pedicle screw array and a second rod array is associated with the second pedicle screw array. Each of the first and second pedicle screw arrays include a plurality of pedicle screws for joining to vertebrae of a spine. Each pedicle screw includes a head portion having a plurality of receptacles and a leg portion having a male thread for implanting into a vertebra. Each of the first and second rod arrays include a plurality of rod segments and each rod segment includes a first end coupled to a first receptacle on a first pedicle screw and a second end coupled to a second receptacle on a second pedicle screw adjacent to the first pedicle screw.
摘要:
A fluid pressure liquid lens includes: a fluid pressure driving portion which is configured to include a first cavity, a fluid pressure generating groove, and an actuator generating a fluid pressure on liquid so as to adjust the fluid pressure by using the actuator; a first transparent elastic membrane which is disposed on an upper surface of the fluid pressure driving portion to seal an upper portion of the first cavity of the fluid pressure driving portion and of which the curvature is changed according to the fluid pressure of the liquid; and a transparent substrate which is disposed on a lower surface of the fluid pressure driving portion to seal a lower portion of the first cavity of the fluid pressure driving portion and which is made of transparent material passing through incident light, wherein a focal length is adjusted by using the fluid pressure generated by the actuator.
摘要:
Provided is a bone expanding framework, which can secures complete reduction of a compressed bone tissue because elevation of the bone tissue is increased by a desired height without shrinking through a characteristic in which a spiral leaf spring having superelasticity is self-set in bone. The framework for expanding bone includes a spiral leaf spring which has a shape in which a thin and long band formed of a metal material is wound in a spiral shape, is inserted into the bone, and is expanded in the bone to reduce elevation of the compressed bone.
摘要:
A method of forming a pattern and a photoresist composition, the method including forming a photoresist film on a substrate by coating a photoresist composition thereon, the photoresist composition including a polymerized photoresist additive, a polymer including an acid-labile protective group at a side chain, a photoacid generator, and a solvent; exposing the photoresist film; and forming a photoresist pattern by developing the photoresist film using an aqueous alkali developer, wherein the polymerized photoresist additive includes a hydrophilic repeating unit having an aliphatic hydrocarbon backbone and a side chain containing an oxygen heteroatom in a heterocyclic ring substituted with at least three hydroxyl groups, and a hydrophobic repeating unit having an aliphatic hydrocarbon backbone and a side chain containing a fluorinated aliphatic hydrocarbon group.
摘要:
The present invention relates to a rod capable of securely connecting pedicle screws in a pedicle screw system for correcting a damaged or transformed spine and a method and an apparatus for fabricating the same and, more particularly, to a flexible pedicle rod with superelasticity in order to provide a flexibility to a fixation between spine segments and a method and an apparatus capable of fabrication the same in mass production. The apparatus according to the present invention comprises a body; an X- and Y-axis moving element mounted on a top surface of the body, the X- and Y-axis moving element simultaneously moving in X-axis and Y-axis directions to wind a material at an angle of 90 degrees; a magazine mounted on the X- and Y-axis moving element to load a material; a material withdrawing element for withdrawing materials one by one from the magazine; and a material molding element mounted on the X- and Y-axis moving element, the material molding element gripping both ends of the material withdrawn from the material withdrawing element and rotating to mold a portion of the material in a spring shape.