912results about How to "Increase wall thickness" patented technology

Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the vascular system and has utility in the introduction and removal of balloon counterpulsation catheters. The access route is through the femoral arteries and the iliac arteries into the aorta, where an intra-aortic balloon pump catheter is positioned to provide cardiac support. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the arteries into the aorta. The distal end of the sheath is subsequently expanded using a radial dilatation device.

Apparatus and methods for stenting are provided comprising a stent attached to a porous biocompatible material that is permeable to endothelial cell ingrowth, but impermeable to release of emboli of predetermined size. Preferred stent designs are provided, as well as preferred manufacturing techniques. Apparatus and methods are also provided for use at a vessel branching. Moreover, embodiments of the present invention may comprise a coating configured for localized delivery of therapeutic agents. Embodiments of the present invention are expected to provide enhanced embolic protection, improved force distribution, and improved recrossability, while reducing a risk of restenosis and thrombus formation.

Apparatus and methods for stenting are provided comprising a stent attached to a porous biocompatible material that is permeable to endothelial cell ingrowth, but impermeable to release of emboli of predetermined size. Preferred stent designs are provided, as well as preferred manufacturing techniques. Apparatus and methods are also provided for use at a vessel branching. Moreover, embodiments of the present invention may comprise a coating configured for localized delivery of therapeutic agents. Embodiments of the present invention are expected to provide enhanced embolic protection, improved force distribution, and improved recrossability, while reducing a risk of restenosis and thrombus formation.

Systems and methods are provided for a structurally supportive fuel delivery module coupled to an upper and lower wall of a fuel tank.

A catheter having an elongated shaft and a balloon on a distal shaft section, the elongated shaft comprising an outer tubular member, and an inner tubular member which has a bonded portion along which an outer surface of the inner tubular member is bonded to an inner surface of the outer tubular member. The inner tubular member has a proximal portion proximal to the bonded portion, and a distal portion distal to the bonded portion with higher axial compression stiffness and column strength than the proximal portion thereof. The catheter has improved traceability, axial collapse resistance, pushability, and crossability, for improved ability to position the balloon at a desired location in a patient's body lumen.

An end-firing optical fiber includes protective ferrule through which treatment radiation is fired in an axial direction, the protective ferrule having refractive properties that cause the radiation to disperse laterally and/or the fiber having sufficient flexibility to enable the fiber to be aimed at a tissue situated to the side of the axis along which the fiber was inserted. The fiber and protective ferrule may be mounted in a cannula, with the cannula being sufficiently flexible to enable the cannula to be withdrawn into a scope having a straight working channel, but has a pre-formed curvature that enables treatment of lateral tissues when the cannula is extended out of a scope.

A pillar structure which includes a pillar member connected to an upper potion and a lower portion of a transversely outer vehicle body. The pillar member is formed into a channel open toward a compartment, with a transversely outer base wall, and a pair of side walls which are thinner than the base wall and extend from both front and rear sides of the base wall. Each side wall is formed to have a first tapered portion gradually reducing in thickness from a base end portion of the side wall to a substantially center portion of the width thereof. Stiffening projections are formed on an inner surface of each side wall at predetermined intervals in a pillar longitudinal direction, and extend from a distal end portion of the side wall to the base end portion thereof.

A ceramic honeycomb structure (1) constituted by cell walls (ribs) (2) forming a composite structure from a plurality of cells (3) being adjacent each other and a honeycomb outer wall (4) surrounding and holding the outermost peripheral cells located at the circumference of the composite structure; said composite structure satisfying the followings: the basic thickness of the cell walls (2) (the basic cell wall thickness) (Tc) is Tc<=0.12 mm, the outer wall thickness (Ts) of the honeycomb structure is Ts >=0.05 mm, and the open frontal area (P) is P>==80%, and there is a relation shown by formula: <paragraph lvl="0"><in-line-formula>1.10<=(Tr1~Tr3-20)/Tc<=3.00 </in-line-formula>between the basic cell wall thickness (Tc) and each cell wall thickness (Tr1~Tr3-20) of cells existing between an outermost peripheral cell and any cell within a first end cell from a fifth cell to a twentieth cell extending inwardly, taking the outermost peripheral cell as a first staring cell.

The invention discloses a planar torsion spring suitable for robot joints mainly comprising an outer ring of torsion spring, an inner ring of torsion spring and a plurality of elastomers; the elastomers are uniformly distributed along a circumference, and the two ends of the elastomers are respectively connected with the outer ring of torsion spring and the inner ring of torsion spring; each elastomer is composed of two symmetrical elastomer units, and each elastomer unit comprises an excircle hole slot, an inner circle hole slot and connecting beams; the inner ring of torsion spring is connected with the inner circle hole slot through the connecting beam, the inner circle hole slot is connected with the excircle hole slot through the connecting beam, and the excircle hole slot is connected with the outer ring of torsion spring through the connecting beam; the inner ring of torsion spring of the planar torsion spring drives the inner circle hole slot to generate elastic deformation through the connecting beam during the rotation process, and the inner circle hole slot drives the excircle hole slot to generate elastic deformation through the connecting beam; the serial elastic deformation of the inner circle hole slot and the excircle hole slot realizes the large angle deformation of the torsion spring; and the planar torsion spring disclosed by the invention guarantees joint flexibility, more compact structure and more flexible design, so that the planar torsion spring is fit for robots and mechanical arm joints.

Diesel engine exhaust filtration systems, and ceramic honeycomb wall flow exhaust filters for such systems, wherein the filters comprise axially centralized filter sections having a higher heat capacity and/or a higher gas flow resistance than peripheral filter sections disposed radially outwardly thereof, the filters thereby exhibiting increased resistance to thermal damage from filter regeneration over-heating.

Gas permeable molds and mold segments having open porosity (60) are disclosed. Blind vents (56) in the mold wall's (54) outside surface (52) allow for an uninterrupted molding surface (62) while enhancing the gas permeability provided by the open porosity (60). Methods of making such gas permeable molds include forming them from sintered material. Methods also include the use of solid free-form fabrication followed by sintering. Also disclosed are unitary structures (150), for use in EPS bead molding, having a steam chest portion (152) with gas impermeable walls (156) and a mold section (154) having a gas permeable mold wall (172) having open porosity (176), and, optionally, open and/or blind vents (180, 178). Methods for making such unitary structures (150) include the use of solid free-form fabrication.

A blower impeller includes a substantially cylindrical cup portion, and a plurality of blades arranged on an outer circumferential surface of a circumferential wall portion of the cup portion. The cup portion includes on an inner circumferential surface of the circumferential wall portion thereof a plurality of axially extending first ribs and a plurality of second ribs arranged between the first ribs. The first and second ribs are arranged in a circumferential direction. A virtual envelope joining radially inner end portions of the first ribs has a smaller diameter than that of a virtual envelope joining radially inner end portions of the second ribs.