Abstract: A photolithography system utilizes tin droplets to generate extreme ultraviolet radiation for photolithography. The photolithography system irradiates the droplets with a laser. The droplets become energized and emit extreme ultraviolet radiation. A collector reflects the extreme ultraviolet radiation toward a photolithography target. The photolithography system reduces splashback of the tin droplets onto the receiver by generating a net electric charge within the droplets using a charge electrode and decelerating the droplets by applying an electric field with a counter electrode.

Abstract: A wheelchair includes a seat frame having two transverse support rods, a foldable sunk-type seat module mounted on the seat frame and located between the two transverse support rods, a backrest frame having two upright support rods, and a foldable sunk-type backrest module mounted on the backrest frame and located between the two upright support rods. Thus, the backrest module may be mounted on and detached from the upright support rods of the backrest frame easily, rapidly and conveniently, and the seat module may be mounted on and detached from the horizontal support rods of the seat frame easily, rapidly and conveniently.

Abstract: A modularized assembly structure of a wheelchair includes two upper transverse tubes and two lower transverse tubes mounted between a pair of sided front module connecting members and a pair of sided rear module connecting members, thereby forming the main frame of the wheelchair. The front wheel and the rear wheel may be respectively mounted on the upper and lower transverse tubes which may be set at different horizontal positions and different vertical heights, so that the distance between the front wheel and the rear wheel may be adjusted arbitrarily.

Abstract: A modularized wheel chair includes two front side members and two rear side members. Two top tubes and two down tubes are respectively connected between the front and rear side members. Each of the front side members has a plurality of front positioning holes that the front wheels unit is optionally connected to desired front positioning holes between the two front side members. Each of the rear side members has a plurality of rear positioning holes that the rear wheels unit is optionally connected to desired rear positioning holes between the two front side members. The position of the front wheels unit and the rear wheels unit can be installed at desired positions so as to obtain different sizes of the wheel chairs.

Abstract: A wheelchair has two sides each provided with a side support frame, an armrest, and an armrest adjusting device. The side support frame has a front portion provided with a support rack, and a rear portion provided with a positioning bar pivotally connected with a rotation shaft, so that the side support frame may be pivoted about the rotation shaft. The rotation shaft is rotatably mounted in the support shaft of the wheelchair, so that the side support frame and the rotation shaft may be rotated about the support shaft. Thus, the side support frame may be rotated about the support shaft through a fixed angle, so that the side support frame may be rotated and moved to a rear portion of the backrest of the wheelchair, thereby facilitating the user entering and leaving the wheelchair.

Abstract: A full-function modularized assembly structure of a wheelchair includes two upper transverse tubes and two lower transverse tubes mounted between two sided front module connecting members and two sided rear module connecting members, thereby forming the main frame of the wheelchair. The front wheel and the rear wheel may be respectively mounted on the upper transverse tube and the lower transverse tube at different horizontal positions and different vertical heights, so that the distance between the front wheel and the rear wheel may be adjusted arbitrarily.

Abstract: A wheelchair includes a seat frame having two transverse support rods, a foldable sunk-type seat module mounted on the seat frame and located between the two transverse support rods, a backrest frame having two upright support rods, and a foldable sunk-type backrest module mounted on the backrest frame and located between the two upright support rods. Thus, the backrest module may be mounted on and detached from the upright support rods of the backrest frame easily, rapidly and conveniently, and the seat module may be mounted on and detached from the horizontal support rods of the seat frame easily, rapidly and conveniently.

Abstract: A wheel chair assembly includes two identical side assemblies each of which has a front part and a rear part and a top link and a low link are respectively inserted in the horizontal fittings on the front part and the rear part. A pivotable device is pivotally connected between the top links and the low links of the two side assemblies. A hanger bracket and a caster are respectively connected to each of the front part. The rear parts each have a plurality of holes so that the shaft of the rear wheel is inserted in one of the holes.

Abstract: An enhanced spine fixation apparatus for fixing a number of vertebrae of a spine column is disclosed. The spine fixation apparatus comprises a plurality of pedicel screws, a plurality of coupling blocks, a plurality of first securing elements, a plurality of second securing elements, a connecting rod, and a plurality of third securing elements. Each coupling block is secured on a pedicel screw by the first securing element while the connecting rod is secured on the coupling block by the second securing element. Each first securing element is fixed by the third securing element. By virtue of the provisions of a first and a second spherical convex surfaces as well as a first and a second recesses respectively on the surfaces of the pedicel screw and the first securing element as well as the surfaces of the coupling block which are being abutted, an adjustment concerning a vertical tilt angle and a horizontal rotating angle of the coupling block relative to the pedicel screw is available.

Abstract: An anterior spinal fixation system comprises a pair of equal upper and lower vertebral plate systems and at least two rods arranged in parallel. The upper and lower vertebral plate systems each includes a staple vertebral plate and a universal cover plate which are jointed firmly with each other to retain the ends of the rods. Furthermore, the anterior spinal fixation system of the present invention may also comprise at least one connector plate system retain in the middle of the rods so as to enhance supporting strength and effect of anti-twist.

Abstract: An intramedullary nail fixation apparatus and its fixation method, the apparatus including a tubular intramedullary nail having a plurality of equiangularly spaced piercing points, and a plurality of flexible screws respectively mounted in the intramedullary nail and forced to fix the intramedullary nail to the marrow cavity of the bone to be fixed, each flexible screw having a rounded stem convenient for rotation, and a self-tapping screw tip at one end of the rounded stem convenient for being forced out of the intramedullary nail through one piercing point and then threaded into the wall of the bone upon rotation of the respective flexible screw. The invention relates also to the method of the fixation of the apparatus.

Abstract: A load sensor inserted between two bones for sensing a stress exerted on the load sensor includes a body, and a load transducer mounted in the body for transducing a strain thereof resulting from the stress into an electronic signal. Such load sensor can detect a stress exerted on a bone graft bone and/or the interaction of the bone graft and spine implant to improve curative effects and increase the successful rate of a bone graft operation.