90results about How to "Large expansion" patented technology

In accordance with the present invention an improved spring-loaded expandable acetabular reamer is described, which comprises a number of convex reaming segments symmetrically located by pair around a central core of the Reamer tool. It is also an object of the present invention to provide and improved spring-loaded reaming segment, which expand faster and requires less manipulation by the operating surgeon and staff minimizing therefore the risk of infection and damage to tissue. Furthermore, introducing large size conventional acetabular reamers with rough and sharp edges through small surgical incisions will undoubtedly cause damage to the incision edge and the surrounding soft tissues, which may ultimately result in delayed wound healing. It is therefore highly desirable to provide an improved acetabular cup, which has the capacity of expanding in diameter to replace several acetabular cups thereby reducing the number of instruments used as well as shortening the time of the procedure and reducing healing time and lessen the risk of infection.

Expandable stents are disclosed. The stents have a plurality of rings or modules interconnected in series, with selectable links between the rings to provide for articulation. The preferred stent includes a plurality of modules, each of the modules being radially interconnected to form a ring configured to be expandably interconnected and being interconnected to each other in series by respective interconnection bridges. Each ring including a continuous strand of a material, the continuous strand of material being interconnected end to end so as to generally encompass a radial space within the ring. The strand of material being configured to include a repeating series of interconnected repeating W-shaped strand configurations having a repeating dip, rise, dip, rise, loop, dip, rise, dip, rise, loop patterned configuration. Preferably, the continuous strand of a material has an outer surface including cavities being at least partially filled with compositions containing medicinal agents selected to provide medically desirable effects upon positioning within a patient. Preferably, the continuous strand of a material has a series of narrowings that facilitate the bending of the strand. Alternate rings have at least one and preferably a number of expansion cells. The expansion cells preferably have at least one accordion structure on each side of the cell, which allows for significant expansion. The material of the respective stents being deformable such that each ring can be deformed from a first configuration wherein each ring has a first circumference and, in certain embodiments, each expansion cell has a first radial length, to a second configuration wherein each ring has a second circumference greater than the first circumference. Methods of producing the devices are also disclosed, including various etching methods.

A medical device or component thereof, and particularly intracorporeal devices for therapeutic or diagnostic uses, formed at least in part of a copolymer having a hard block and a polylactone soft block. In a presently preferred embodiment, the hard block of the copolymer is a polyester, and more specifically, the copolymer comprises a di-block copolymer of poly(ethylene terephthalate) and polycaprolactone. The copolymer is suitable for forming a variety of medical devices or medical device components, and is preferably used to form a catheter balloon, such as a balloon for an angioplasty or stent delivery catheter. However, a variety of medical devices or medical device components can be formed of the copolymer, including stent covers, vascular grafts, and shaft components.

An electrode connection structure between outer lead(s) of TCP(s), being first circuit board(s), and actuator member electrode(s) for connection to external circuitry, being second circuit board(s); actuator member(s) electrode(s) for connection to external circuitry being formed in or on floor(s) of recess(es) which is / are step(s) smaller in magnitude than thickness(es) of outer lead(s) protruding from polyimide substrate(s) of TCP(s); adhesive(s) having thickness(es) more or less equal to difference(s) between step(s) and thickness(es) of outer lead(s); and outer lead(s) being electrically and mechanically connected to electrode(s) for connection to external circuitry.

Disclosed is a device for assisting the function of a heart that is collapsible to facilitate minimally invasive procedures. The cup-shaped device may be inserted into the chest cavity and deployed on the heart via a specially configured tube. The device comprises a cup-shaped shell expanded by a support cage disposed within the shell, and an elastic cup-shaped liner, together forming an inflatable cavity between the outer surface of the liner and the inner surface of the shell. Alternate application of positive and negative pressures to the cavity provides controlled, active, systolic and diastolic support to the heart.

A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g. an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.

A method of expanding / maintaining undifferentiated hematopoietic stem cells by obtaining unselected mononuclear cells; and seeding the mononuclear cells into a stationary phase plug-flow bioreactor in which a three dimensional mesenchymal / stromal cell culture has been pre-established, thereby expanding / maintaining undifferentiated hematopoietic stem cells.

In a hydraulic shock absorber 10, a piston holder 41 has an axial side surface 41e formed with an opening of an inclined hole 48b exposed to a rod-side oil chamber 43B. A block ring 71 capable of closing the opening of the inclined hole 48b is provided around a piston rod body 22 at a position between the axial side surface 41e of the piston holder 41 and the upper end of a rebound spring 32.

Described are dough compositions and methods, wherein the dough composition is prepared using a metabolized portion of dough comprising bubbles, metabolically active yeast, and developed dough matrix, combined with non-metabolized yeast, and wherein the dough composition preferably has useful properties such as yeast-leavened freezer-to-oven capabilities, without the need for chemical leavening agents or modified atmosphere packaging.

The invention relates to an electric telescopic awning. In the invention, a vertical structure comprising two vertical supporting arms is adopted for supporting, and the awning comprises the two vertical supporting arms and a scroll, wherein the head part of the supporting arm on one side has the functions of transmission of a gear and dead lock. The structure is different with any horizontal supporting structure in the prior art, the electric telescopic awning is of a vertical parallelogram supporting structure, thus the supporting is more stable and more reliable, the expansion amplitude is larger and more attractive, and the sun-shading angle is adjustable, wherein the gear self-locking function at the head part can enable the expansion size of the awning to be changed and fixed arbitrarily, and the telescopic size of the awning can be changed arbitrarily. In addition, air pressure is adopted for supporting. The situation can not be realized by any awning in the parallel supporting structure at present. The awning is simple for installation, the complete installation only needs 8 screws for fixing, all dual-arm supporting structures are covered by a housing after being folded, and the appearance is very attractive. The expansion and contraction of the awning can be realized by only one rocker switch, and the one-key operation is very convenient.

A system and method for the extraction of americium from radioactive waste solutions. The method includes the transfer of highly oxidized americium from an acidic aqueous feed solution through an immobilized liquid membrane to an organic receiving solvent, for example tributyl phosphate. The immobilized liquid membrane includes porous support and separating layers loaded with tributyl phosphate. The extracted solution is subsequently stripped of americium and recycled at the immobilized liquid membrane as neat tributyl phosphate for the continuous extraction of americium. The sequestered americium can be used as a nuclear fuel, a nuclear fuel component or a radiation source, and the remaining constituent elements in the aqueous feed solution can be stored in glassified waste forms substantially free of americium.

Rifle bullet for hunting purposes, with a jacket of a lead-free soft ductile material and a core, connected to the jacket, made from a material softer than the jacket. The aim of the invention is to improve the bullet to provide a persistent cut of hair and bleeding at the point of entry, mushrooming in a controlled manner with considerable cross-sectional enlargement, whilst only marginally breaking up with a high residual weight (90% and more). The rifle bullet has a thinly-jacketed bullet tip and has a marked sharp edge at the transition point of the jacket on the bullet tip to a substantially thicker-jacketed tail section. The rifle bullet is internally provided with a circumferential channel reducing the wall thickness of the jacket at said point, filled with the core material.

The present invention discloses a nanoporous copper-zinc-aluminum shape memory alloy and a preparation method and an application thereof. According to the method, firstly a pure Cu block, a pure Zn block and a pure Al block are proportioned in a certain mass ratio before being smelted to obtain a copper-zinc-aluminum alloy ingot; the obtained copper-zinc-aluminum alloy ingot is melt spun using a copper roller rapid quenching method under vacuum protection to obtain an ultrathin strip CuZnAl master alloy which is then subjected to an etching treatment with a solution containing chloride ions at a temperature of 0˜80° C. for 10˜300 minutes to obtain a nanoporous Cu / CuZnAl material; and finally the nanoporous CuZnAl material is sealed in a high vacuum quartz tube for a heat treatment to obtain a nanoporous copper-zinc-aluminum shape memory alloy having a superelastic single β phase at room temperature. The preparation method according to the present invention is highly controllable and can be used in the industry preparing electrode materials for lithium ion secondary batteries to remarkably improve the cyclic performance of electrode materials.

A stackable plant pot including a cavity provided with water flow directing gutters, a recesses centrally located water catchment region with drainage slits and suited to receive a moisture retaining device, and a soil holding region located above the water catchment region.

Controlled expansion of an intravaginal device can be achieved by selectively attaching either a primary or secondary cover to the primary absorbent device having a fluid storage element, we can determine that certain portions of the tampon will expand while other portions will be restricted to substantially the compressed structure. The primary cover can be attached to the primary absorbent device either before or after the absorbent device is compressed into final tampon form. The compression may be in the axial or radial direction or a combination of both directions. The secondary cover, if used, can be attached after the tampon pledget has been compressed into the final tampon form.

The invention relates to the automobile manufacturing field, particularly to a special passenger vehicle which has the functions of riding and camping. According to the full-automatic camping vehicle, an extension carriage can be automatically unfolded outward completely and the unfolding range is large. A top plate and a base plate and the side walls, the front wall and the rear wall of the extension carriage are fixedly connected into a whole, meanwhile any side of the bottom of the base plate of the extension carriage and a chassis are provided with a driving device and at least two guide devices respectively, and accordingly a user only needs to operate the driving devices to enable the extension carriage to be unfolded outward automatically without human power assistance. Meanwhile metal supporting arms can be unfolded outward through the operation of hydraulic oil cylinders, the flexible ends of the metal supporting arms are aligned to guide rails which are arranged on the base plate of the extension carriage to provide support for the extension carriage which is unfolded outward, the extension carriage can continue to be unfolded outward in a sliding mode under the condition that the support is obtained due to rolling devices which are arranged at the flexible ends of the metal supporting arms, and accordingly the extension carriage can be unfold outward to the maximum range.

An on-board solar battery module includes: an encapsulant layer of power generating elements; a top surface layer joined to the encapsulant layer on the side corresponding to a light receiving surface side of the power generating elements; and a back surface layer joined to the encapsulant layer on the side opposite the side corresponding to the light receiving surface side of the power generating elements. Furthermore, an end portion of the back surface layer is positioned on the inner side of an end portion of the top surface layer in an extension direction of the top surface layer, and the top surface layer has a general portion that covers the power generating elements, and a peripheral edge portion that is formed at an end portion side thereof on the outer side of the general portion, and that has a thicker panel thickness than that of the general portion.

An electrical cable includes at least one conductor and a barrier arranged externally to the at least one conductor. The barrier includes two first layers including an inorganic material and a second layer including a polymer-metal composite material, the second layer being interposed between the two first layers. The electrical cable also includes, in an intermediate position between the at least one conductor and the barrier, solely discontinuous layers and / or layers of non-thermally-collapsible materials.

A device for the cleaning of pipes, such as household waste and sewer pipes is proposed, the device includes a nozzle movable in at least three axes within a pipe for providing a jet of cleaning fluid directed to soilage in pipes; a cleaning hose for supply of cleaning fluid is connected to the nozzle and a swivel mechanism for deflecting the nozzle at an angle relative to a longitudinal axis, a front end portion of the hose is bent in a bending direction in a bending plane; at least one drive for deflecting the nozzle around the longitudinal axis by changing the direction of bending and the bending plane without torsion to the cleaning hose.