16 results about "Nitinol SE" patented technology

A steerable arm for use in an endoscopic surgical procedure. The steerable arm is cut from a nitinol tube to provide flexibility and elasticity by a structure formed by cutting the tube. Typically, the cut tube includes a helical coil whose annuluses contact at one lateral side of the tube and the tube bends to separate the annuluses at the other lateral side. The material from which the tube is made is capable of maintaining memory for bending. This provides bias for restoring the tube to a bent state whenever the force causing the tube to bend is removed.

A composite suture needle configured for passing through a smaller cannula used in minimally invasive surgery includes a curved elongated body made of stainless steel. The curved elongated body has a proximal end and a distal end with a pointed tip. The composite suture needle includes a sheath covering the curved elongated body. The sheath is curved so as to conform to the shape of the curved elongated body. The sheath is made of a more flexible material than the curved elongated body. The pointed tip of the curved elongated body extends distally beyond a distal end of the sheath. The curved elongated body is made of stainless steel and the sheath is made of a more flexible material such as nitinol than the elongated body.

The invention provides a system for fixing a movement of a timepiece to an element of a case, comprising at least one clamp, in particular at least two, preferably three or four clamps, for first contacting with the movement and second contacting with the element of the case, the at least one clamp is made of a superelastic alloy and / or a shape memory alloy, in particular a nickel-titanium alloy, such as nitinol.

The invention relates to the technical field of medical instruments, and particularly discloses a prostate expansion device for the urology department. The invention aims to overcome the inherent defects of the existing prostate expansion device in the aspects of expansion force control, tissue damage risk and reversibility. The tubular net rack is integrally formed by medical nitinol alloy and is divided into a near-end conical area, a middle cylindrical area and a far-end conical area in the axial direction; the stent recovers a preset shape at the body temperature of 37 DEG C, the maximum radial supporting force is controlled at the plateau stage of 0.8 N / mm to 1.2 N / mm, and the stent has the self-pressure-limiting characteristic; annular recovery hooks are arranged at two ends of the bracket; and the surface is subjected to electrochemical polishing treatment and a titanium nitride coating is deposited. By the adoption of the scheme, the expansionary force can be safe and controllable, and tissue damage is avoided; the anatomical compliance and comfort are improved; the recoverability is realized; calculus formation is effectively prevented, and the service life is prolonged.

Annuloplasty rings that are size-adjustable after implant and which facilitate deployment and reduce long-term complications. The rings each have a hollow support body with a cinching element extending therethrough whose length is controlled remotely via a deployment system handle. The ring may be anchored to the annulus and then the size adjusted while the heart beats and under visualization to minimize regurgitation. The cinching element may be a loop of braided metal cable which cooperates with a junction housing to which the deployment system attaches. The rings are especially beneficial for repairing the mitral annulus, and may be saddle shaped with the junction housing located on an anterior side. The support body may be shape set nitinol tube having cutouts for flexibility, and the cinching element may be a braided nitinol core having a braided polymer exterior. The cinching element may be a complete loop, have one end anchored in the junction housing, or have two free ends extending out of the junction housing.

The invention relates to a drill shaft 10 for a medullary drill 1, the medullary drill 1, an impulse-reducing coating 17, the use of this coating 17, and a method for reconditioning the medullary drill 1. The drill shaft 10 comprises a longitudinally extended shank 19, the shank 19 having a drill connection 13 at a first end 11 and a drive connection 14 at an opposite second end 12. The shank 19 has a shaft core 18 with a continuous, longitudinally axial bore 15. The shaft core 18 is made of nitinol. A circumferential surface 16 of the shaft core 18 has an impulse-reducing coating 17 made of polyetheretherketone. The coating 17 extends from the first end 11 to the second end 12.

Disclosed are example embodiments of a stent including a body formed of a nitinol wire material woven into a tapered shape. The body includes flared ends at both distal and proximal ends, with flare angles between 15 degrees and 30 degrees relative to a longitudinal axis of the stent. The body further includes a first portion having a first number of braid loops per unit length and a second portion having a second, lower number of braid loops per unit length, such that the first portion forms a tighter braid than the second portion. In the second portion, a wire segment of a braid loop is arranged at a shallower angle relative to the longitudinal axis compared to a wire segment of a braid loop in the first portion.

The invention relates to the technical field, and discloses a municipal construction metal pipeline welding device which comprises a welding base and two semicircular steel rails arranged on the two sides of the welding base and further comprises a power part fixed to the welding base. The functional groove is formed in the welding seat; the stroke sliding frame is fixed in the functional groove; the displacement plate is arranged on the stroke sliding frame in a sliding manner; the thermal driving piece is fixed in the functional groove and the displacement plate; the heat dissipation piece is fixed on the welding seat; the control panel adjusts the output current of the welding battery, the current is transmitted to the Nitinol wire through the positive electrode connecting rod, the negative electrode connecting rod and the metal connector, the Nitinol wire is heated, and the shortening amount of the Nitinol wire is accurately controlled by means of the magnitude of the current; by means of the current temperature control telescopic characteristic of the nitinol wire, in cooperation with linear transmission of the displacement plate and accurate angle conversion of the angle adjusting gear, millimeter-level fine adjustment of the welding head is achieved, irregular welding gaps can be efficiently adapted, and welding defects are avoided.

A stent of the aortic valve which is self-expandable and repositionable, preferably made from nitinol, consisting of two parts: the upper part and the lower part. The lower part is a mesh (1) laid out so that it creates a kind of cylinder wall on the entire height of the element. Also other shape of the mesh is acceptable, for example partially conical, or partially resembling flattened side wall of the cylinder. The upper part of the stent consists of derived from the mesh (1) upwards and arranged at equal intervals three arms (2) the height of which is slightly larger than the height of the mesh (1), a bit less than the height of the mesh (1) or equal to its height. The stent arms (2) are shaped in such a way that they form together a kind of an oval chalice bowl, and their end, peripheral part is preferably straight and also inclined to the middle.

The invention discloses a method for manufacturing a hyperelastic nitinol ring. The method includes compressing the nitinol wire on the first side and the second side to form a permanent flat edge, and cutting off a portion of the nitinol wire on the third side and the fourth side to form a flat edge. The method comprises: manufacturing a modified nitinol wire having a rectangular cross-section formed by flat edges on the four sides; the improved nitinol wire is bent into a ring shape, so that the first end of the improved nitinol wire is aligned with the second end of the improved nitinol wire; and permanently coupling the first end to the second end to form a nitinol ring. The nitinol ring is coupled to an capsulotomy device such that the nitinol ring, upon receiving an electrical current from the capsulotomy device, generates heat sufficient to cut tissue in contact with the nitinol ring.

A medical device includes a medical catheter having a nitinol body and a copper wire coupled to the nitinol body with a fusion weld.

The application relates to the technical field, and discloses a metal pipeline welding device for municipal construction, which comprises a welding seat, two semicircular steel rails arranged on the two sides of the welding seat, a power component fixed on the welding seat, a functional groove arranged on the welding seat, a stroke sliding frame fixed in the functional groove, a displacement plate slidingly arranged on the stroke sliding frame, a thermal drive component fixed in the functional groove and the displacement plate, and a heat dissipation component fixed on the welding seat. The control panel of the application adjusts the output current of a welding battery, the current is transmitted to a nitinol wire through a positive electrode connecting rod, a negative electrode connecting rod and a metal joint, the nitinol wire is heated, the shortening amount of the nitinol wire is accurately controlled according to the current size, the current temperature control expansion and contraction characteristics of the nitinol wire are combined with the linear transmission of the displacement plate and the accurate angle conversion of the angle adjusting gear, millimeter-level fine adjustment of a welding joint is realized, the irregular welding gap can be efficiently adapted, and welding defects can be avoided.

The invention provides intelligent buffering bionic geotechnical cloth based on memory alloy and a manufacturing method, and relates to the technical field of geotechnical cloth. The geotechnical cloth is of a multi-layer composite structure and comprises a basalt fiber net, a reinforcing layer, a composite foam buffer layer, a filtering layer and main geotechnical cloth from top to bottom. The basalt fiber net simulates a beak to serve as a rigid contact layer; according to the composite foam buffer layer, open-cell EPP foam serves as a base body to simulate energy absorption of loose bones, internally-inclined I-shaped reinforcing ribs simulate a muscle force transmission path to disperse stress, and a nitinol memory alloy net wrapping the surface of the base body simulates the hyperelastic reset function of the tongue bones. The structure is further provided with a through drainage channel to guarantee water seepage, and the filtering layer can effectively block foam chippings. According to the geotechnical cloth, through the multi-stage synergistic effect, the impact resistance and the deformation recovery capacity under the cyclic dynamic load condition of the high-speed railway are remarkably improved, and the performance of the geotechnical cloth is kept stable under the extreme environment of each region.

Various embodiments described herein relate to an interventional hook-based retrieval device for retrieval of foreign bodies. The hook may be made from wire or tubing that may be attached to a shaft. In a preferred embodiment, the hook may be made from a superelastic alloy such as Nitinol and the retrieval device may comprise a variety of pre-shaped, pre-sized and pre-positioned bends in the hook or shaft(s) that may be used to increase the usefulness of the retrieval system, for example, as to directionality, grip strength and reduction in profile.

The present disclosure discloses a device including a proximal end, a distal end, a frame and a membrane. The frame is made of a plurality of members defining a single disc structure. The diameter of the frame increases from the proximal end to the distal end. Each member of the plurality of members includes a first portion disposed towards the proximal end defining a tubular profile, and a second portion disposed distal to the first portion and towards the distal end. The first portions of the plurality of members are at least partially coupled to each other. The membrane is disposed at least partially over at least one of an outer surface or an inner surface of the frame. The frame is made of a nitinol tube.

The present disclosure relates to a dental tool or instrument (100) comprising a working portion (110) made of a nitinol alloy. When heated above the transition temperature, the nitinol alloy of the working portion (110) can transition from the R-phase alloy state. The working portion (110) comprises at least a first portion (111) having a first transition temperature (TT1) and at least a second portion (112) having a second transition temperature (TT2). The first transformation temperature (TT1) is a temperature lower than the operating temperature such that the first portion (111) is in the austenite phase at the operating temperature. The second transition temperature (TT2) is a temperature greater than the operating temperature such that the second portion (112) is in the R-phase at the operating temperature. The present disclosure further relates to a method of manufacturing a dental tool or instrument.