35 results about "Hyper elastic" patented technology

The present invention enhances the effectiveness of treatment of support tissue structures. Generally, such tissue structures support organs and hold the organs in their proper position for appropriate functioning. When such tissue structures become weak, hyper-elastic, and/or excessively lengthy, the organs of are no longer supported in their proper position. This often leads to physical manifestations such as incontinence, hernias, and the like. Remedies often involve thermal treatment of the support tissue structures, such as thermally inducted controlled shrinkage, contraction, or stiffening of the support tissue structure. To enhance such thermal treatment and diminish the possibility of undesirable heating and damage to nearby tissue surfaces, vasoconstrictive agents are used.

The invention relates to a device and a method for testing mechanical property of a hyper-elastic material. The device mainly comprises a reinforcing piece (4) at the end of a test piece and a test piece clamp, wherein the reinforcing piece (4) has a trapezoidal cross section; a clamping port of the clamp is an inclined surface; the reinforcing piece (4) is adhered to the end of the test piece and is arranged in the clamp, the inclined surface of the clamp tightly clamps the inclined surface of the reinforcing piece (4), and the clamp is self-locked in the tensioning process and is prevented from locally deforming. The device is applied to multiple stress-strain tests of the hyper-elastic material such as uniaxial tension, equally biaxial tension and planar tension (pure shear). Stress data is acquired by a data acquisition system of an electronic universal testing machine, and the strain data is acquired by a charge coupled device (CCD) image acquisition device. Due to the technical scheme, the clamping force is high when the tension is high in the process of tensioning the test piece, so that the test piece is uniformly stressed, more accurate testing data can be obtained, and the mechanical property parameters of the hyper-elastic material obtained accordingly are more reliable.

A self-wrapping dilatation balloon comprising a multiblock copolymer having high elasticity and elastic recovery from nominal strains greater than about 30% is described. Also described herein, is a polymeric extrudate for making a dilatation balloon comprising a multiblock copolymer having tensile strength in the range of about 50 MPa to about 450 MPa, strain at break in the range of about 50% to about 600% and substantially complete elastic recovery from nominal strains of at least about 30%. The extrudate has phase-separated microdomains that are macroscopically aligned in parallel, perpendicular, transverse or a combination thereof. Also described herein is a process for producing a polymeric extrudate for use as a dilatation balloon. The process comprises extruding a multiblock copolymer mixture or composition to form an extrudate. The extruding is done such that the extrudate has phase-separated microdomains that are macroscopically aligned in parallel, perpendicular, transverse or a combination thereof. After extrusion, the process optionally comprises the steps of drawing and coagulating the extrudate.

The invention discloses a left auricle occluding device. The left auricle occluding device comprises a sealing disc and an anchoring device, both of which are connected. The position where the anchoring device is matched with a left auricle is an anchoring net of a boneless structure. The overall anchoring device is of a boneless structure and formed by weaving of hyper-elastic metal wires or memory alloy metal wires. The far end of the anchoring device is in the shape of an opening. The near end of the anchoring device is collected and connected with the sealing disc to form a conical net. The far end of the anchoring device is opened and turned up towards the near end to form the anchoring net surrounding the conical net. The anchoring net is joined with the conical net by means of a circular transition area. The left auricle occluding device has following beneficial effects: force can be uniformly distributed to be anchored in the interior of the left auricle in order to eliminate concentration of local stress and can also be repeatedly released; and an opening part of the left auricle is effectively and reliably blocked.

A balloon expandable covered stent consists of a plurality of primary stent units, each having an undulating shape defined by a series of primary strut members converging to form peaks and valleys. The primary stent units are assembled into a single cylindrical structure of the stent by connecting corresponding peaks with secondary strut members. Generally, surfaces of the stent may then coated with a polymeric, hyper-elastic material, preferably Thoralon®, by pre-expanding the stent prior to coating.

An objective of the present invention is to form a hyper-elastic flange integrally within a shield case body around a periphery thereof while decreasing an occupied area for grounding. The shield case 2 according to the present invention is disposed to cover electronic parts 6 on a circuit board 1, and which has a flange 7 formed integrally therewith so as to contact with a metallic ground line 3 on the circuit board 1. The flange 7 is elastically deformed to be grounded, thus a leakage of electromagnetic waves to the outside of the shield case 2 is prevented. The flange 7 is made of metallic glass. By forming the flange 7 from metallic glass, a displacement due to viscous flowing on the atomic level, which is different from a plastic deformation, can be utilized, and thus a high precision flange can be formed without a spring-back.

Surgical needle including a crimping zone for securing a suture to the needle. The needle is made of a hyper-elastic alloy which, after treatment, has two distinct states. One of the two distinct states allows the needle to be forced into a roughly elongated position when the needle is housed in an internal bore. Another of the two distinct states allows the needle to adopt a curved profile as a result of superelasticity or hyper-elasticity of the needle. The needle has a free end which has a tapered point which includes an inclined heel portion. The inclined heel portion is arranged on an inside portion of the curved profile.

The invention discloses a fabric deformation simulation method which, based on the classic spring-mass model, introduces the concept of a semi-rigid spline, and takes into full consideration of stretching property, compressing property, cutting property, bending property and surface roughness of the fabric, and effectively addresses the problem of anisotropy and superelasticity in fabric deformation simulation, and increases real sense of fabric deformation simulation. In aspect of numerical integration, compared with traditional explicit euler method and implicit euler method which have defects of slow solution speed, the method of the invention Verlet integration method which has substantial increase in velocity and computing stability. In aspect of collision treatment, the method further simplifies a collision model, and only considers collisions of "top pint-triangle" type and "edge-edge" type that occur in large amount in fabric simulation, which effectively reduces times for collision treatment and accelerates computing velocity.

The invention relates to Ti-Zr-Nb-Fe-Al-Ce super elastic alloy and products thereof. Because of adding appropriate amount of Fe, Al and Ce elements, the super elastic alloy has high erosion resistance and oxidation resistance as well as excellent welding performance, cold workability, phase-changing super elasticity, shape memory property and biocompatibility. The welding performance, the cold workability and the biocompatibility of the alloy are better than those of TiNi shape memory alloy, while the super elasticity and the shape memory property are equivalent to those of the TiNi shape memory alloy. The Ti-Zr-Nb-Fe-Al-Ce super elastic alloy not only can be used as biomaterial capable of being implanted in a human body for a long time, but also can be used as industrial products made from the alloy such as spectacle frame, bra support, golf club head, pipe joint, spring and drive element; moreover, the alloy has the advantages of easy processing, low cost and wide application range.

The invention provides a designing and manufacturing method and a sealing method of a sealing structure of an oil well pipe joint. The manufacturing method comprises the steps of according to a presetrule that a sealing performance evaluation parameter is larger than or equal to a corresponding sealing performance safety allowance of an oil well pipe, determining a sealing surface contact pressure stress, a sealing structure material elasticity strain capacity, sealing structure material strength and a sealing surface contact width of the oil well pipe; according to the sealing performance safety allowance of the oil well pipe, enabling the sealing structure material elasticity strain capacity to be larger than 0.5%; according to the sealing surface contact pressure stress, the sealing structure material elasticity strain capacity and the sealing structure material strength, determining a used material of the sealing structure; according to the determined sealing structure material elasticity strain capacity, determining the used material of the sealing structure as a hyperelastic alloy material with the elasticity strain capacity being larger than 0.5%; and manufacturing the sealing structure according to the used material and the elasticity strain capacity thereof. By utilizing the designing and manufacturing and the sealing method of the sealing structure of the oil well pipe joint provided by the embodiment of the invention, the reliability of a sealing performance of the oil well pipe joint is improved.

The invention relates to a highway double-way anti-collision energy consuming plate and belongs to the technical field of road construction. The highway double-way anti-collision energy consuming plate comprises an embedded concrete base, a rectangular solid body and a bottom plate; the embedded concrete base is embedded underground and connected with the ground through a bolt by using a concreteconnecting piece to form a highway anti-collision plate basic structural body; after connection, an elastic energy consuming plate I and an elastic energy consuming plate II are placed on the two sides of the rectangular solid body and the two sides of the concrete connecting piece on the embedded concrete base; a hyper-elastic memory alloy hemisphere is placed between the elastic energy consumingplate I and the elastic energy consuming plate II and connected to the rectangular solid body and the concrete connecting piece through a bolt; a concrete cover plate is placed on the hyper-elastic memory alloy hemisphere and connected with the hyper-elastic memory alloy hemisphere through a bolt; and anti-collision cushion layers are placed on the external side of the elastic energy consuming plate I and the external side of the elastic energy consuming plate II. The highway double-way anti-collision energy consuming plate has the beneficial effects that the mounting is simple, the materialis cheap, the transportation is convenient, the repairing is simple, and the efficient anti-collision effect can be realized.

The invention discloses a lightweight functionally graded composite bulletproof armor plate and a preparation method thereof. The lightweight functionally graded composite bulletproof armor plate comprises a bulletproof ceramic plate, a shape memory alloy layer and an ultrahigh molecular weight polyethylene plate, and the shape memory alloy layer is arranged between the bulletproof ceramic plate and the ultrahigh molecular weight polyethylene plate; the shape memory alloy layer serves as the sandwich plate, the hyper-elastic effect of the shape memory alloy layer is exerted, the composite plate with a sandwich structure is formed, the defects of an existing bulletproof armor material are overcome, the weight is greatly reduced compared with bulletproof steel under the condition of the sameprotective capacity, and then the high practical value of the bulletproof composite armor plate is achieved. The bulletproof composite armor plate can be used as a preparation material of armor equipment, and is applied to the fields of armor equipment including armored vehicles, naval vessels, bulletproof clothes, bulletproof helmets and the like.

The invention discloses a spinal fusion cage, and belongs to the technical field of bio-medical metal materials, in particular a homogeneous hyper-elastic porous interbody fusion cage. The spinal fusion cage provided by the invention has a novel structure. The spinal fusion cage, through special structural design, not only guarantees braking, fixing and durable supporting performances but also greatly improves a fusion rate between an implant and surrounding tissues, so that the problems that the spinal fusion cage is easily loosened and is poor in new bone formation capacity are thoroughly solved. The spinal fusion cage disclosed by the invention is integrally represented as a three-dimensional interlinked porous structure and is made by weaving and sintering metal wires; and the metal wires are made from pure titanium, titanium alloy, pure tantalum or tantalum alloy.

The invention relates to a method for improving mechanical properties of amorphous endogenous composite materials through amorphous matrix structural recovery, and belongs to the field of amorphous alloys and endogenous composite materials thereof. The amorphous endogenous composite materials have the microstructure characteristics that reversible phase change endogenous crystalline-state phases are distributed in an amorphous matrix. Under the action of a tensile load, the amorphous endogenous composite materials show super-elasticity, and that is shapes completely recover after small strainunloading. Tensile circulation loading is carried out at small strains, the structural recovery driven by ''shape memory effect'' happens to amorphous matrix phases in the amorphous endogenous composite materials. The amorphous matrix of the structural recovery can enable the mechanical properties of the amorphous endogenous composite materials to be improved, for example, the tensile plasticity is improved, and a work hardening stage is prolonged. According to the method, the mechanical properties of the amorphous endogenous composite materials can be improved, so that the practical application of the amorphous endogenous composite materials being used as the structural materials is expanded, and important socioeconomic benefits are achieved.

The invention discloses a hyperelastic thin plate configuration evolution control method and system based on growth deformation and a medium, and the method comprises the steps: S1, calculating a first class basic quantity and a second class basic quantity of a target curved surface according to a parameter equation of the target curved surface; s2, judging whether the coordinate curve forms an orthogonal curvature line net or not according to the first type of basic quantity and the second type of basic quantity, and if so, executing the step S4; if not, executing the step S3; s3, performing independent variable transformation on the parameter equation of the target curved surface to enable the new coordinate curve to form an orthogonal curvature line net on the curved surface; and S4, determining the initial plane configuration of the plate-shaped sample and the distribution of the growth function in the plate-shaped sample according to the first basic quantity and the second basic quantity. According to the method, whether a parametric curved surface coordinate net is an orthogonal curvature line net or not is considered, and the growth function of any parametric curved surface can be calculated. The method can be widely applied to the technical field of software intelligent device design and development.

The invention discloses a straw characterization method for Mullines effect parameters. The method comprises the following steps: firstly, a dimensionless function is introduced into a straw experiment to establish the relation between physical quantities in the straw experiment, then display expression of the dimensionless function is obtained through calculation according to a finite element model containing the Mullines effect, and then the straw experiment is carried out to obtain a loading and unloading load-displacement curve of an actual material; and then the initial shear modulus andthe hyperelastic mechanical parameters of the material are obtained according to the display expression of the dimensionless function and the loading load-displacement curve inversion of the straw experiment, and finally the Mullines effect parameters of the material are obtained according to the display expression of the dimensionless function and the unloading load-displacement curve inversion of the straw experiment. The stress softening mechanical property of the rubber material can be rapidly and locally characterized in situ in a multi-scale mode, the complexity of a traditional tensilecompression experiment is reduced and the accuracy of the obtained Mullines effect parameters is improved.

The invention discloses an alloy wire with a shape memory characteristic and super elasticity and a manufacturing method and application thereof. The alloy wire with the shape memory characteristic and super elasticity comprises a first section and a second section, wherein the first section has a first phase change temperature value, the first phase change temperature value is smaller than a useenvironment temperature, the first section provides super elasticity, the second section is connected with the first section and has a second phase change temperature value larger than the use environment temperature, and the second section provides shape memory characteristic. Therefore, compared with a single alloy wire, the alloy wire provided by the invention has the advantage that the shapememory characteristic and the super-elastic beneficial effects can be respectively provided through different sections.