Methods are provided for the fabrication of microneedles. Microneedles fabricated according to the herein described methods will generally be constructed of multiple lengths of wire winded together, brazed and further manipulated to include a reversible engagement feature. The subject microneedles may find use in a variety of applications and, among other purposes, the reversible engagement feature of such a microneedle may by employed in implanting an implantable device into a biological tissue. Also provided are methods of inserting an implantable device into a biological tissue having an outer membrane. The subject methods may include ablating a section of the outer membrane and inserting the implantable device through the ablated section of outer membrane, including e.g., where the implantable device is inserted using a microneedle including e.g., those microneedles for which methods of fabrication are provided herein.

One aspect relates to a process for preparing a processed filament, including provision of a filament, including a segment. At least in the segment, the filament includes a core, including a first metal, a first layer which is superimposed on the core, and includes a polymer, and a second layer which is superimposed on the first layer, and includes a second metal. The segment of the filament is processed by interaction of the segment with at least one beam of electromagnetic radiation of a first kind. The electromagnetic radiation of the first kind has a spectrum with a peak wavelength in the range from 430 to 780 nm. Further, one aspect relates to a processed filament, obtainable by the process; a filament; an electrical device, including at least a part of the processed filament.

A cable treatment device including: an affixing device for reversibly securing to a circumference of a power cable a kinematic device having attachment structure for attaching to the affixing member, the kinematic device adapted to provide kinematic motion relative to the attachment structure, the kinematic motion being fully controllable through a plurality of force input connections, and a tooling device attached to the kinematic device, the tooling device adapted to receive said kinematic motion, wherein the kinematic device allows the tooling to move cross-sectionally relative to the extension of a power cable secured by the affixing device. Thereby, a well-controlled and reproducible process is achieved, employing a portable device being user friendly, while simultaneously reducing technician exposure to toxic particulates.

A welder containing a weld part, a clamp and a number of tools that is for welding metal wires end-to-end to one another. The tools have a tool indicator that is either in complete or in non-complete condition, and can be processing tools used to finish the weld or testing tools allowing testing the weld once finished. Before starting the welding the first metal wire is held in the clamp. By that action all tool indicators are set to the non-complete condition. When a processing tool has been used, its processing tool indicator is set to complete. When the weld has passed the specification of a testing tool, the testing tool indicator is set to complete. When each processing and testing tool indicator is set to complete the clamp will open. In this case it is sure that the operator has done all necessary steps and checks on the weld.

An ultrasonic bonding method of a conductor of an electric wire includes ultrasonically bonding strands forming a conductor of at least one electric wire using an anvil and horns. A first vibration mode of at least one of the horns is different from a second vibration mode of the other horns.

Disclosed are a joint of a copper terminal and an aluminium conductor and an ultrasonic welding method thereof. One spacing metal layer is added between the copper terminal and the aluminium conductor, and firstly, the spacing metal layer is fixed at a welding end of a base material by means of a manner such as electroplating, pressure welding, electric arc spray welding or electromagnetic welding, and the three parts are then welded together by means of an ultrasonic welding manner. The welding method is suitable for the welding of various joints, the electrochemical corrosion resulting from the potential difference between the copper and aluminium electrodes can be effectively reduced, and the mechanical properties of the joint can be improved.

A system for transmitting power and current includes a power cable having stranded wires and an exposed end. The stranded wires are ultrasonically welded together. Ultrasonically welding the wires creates a bundle of wires at the exposed end that may be free from air pockets, reducing oxidation and improving the current path through the cable.

It is an object to enable a non-destructive inspection of reliability of a bonding part and enabling an accurate inspection. A wedge tool includes: a groove which is formed along a direction of an ultrasonic vibration in a tip portion and in which a bonding wire is disposed in a wedge bonding; a first planar surface and a second planar surface disposed on both sides of the groove; and at least one convex portion formed away from the groove in at least one of the first planar surface and the second planar surface, wherein the bonding wire comes in contact with the convex portion by a deformation of the bonding wire in a bonding part of the bonding wire and a bonded object bonded to each other by a wedge bonding.

A material positioner can utilize characteristics of the material being welded to locate the material to be welded. In some embodiments, the material positioner has a voice coil actuator (VCA) for material positioning. In some embodiments, the VCA is sent a signal based on the characteristics of the material being welded and/or the type of weld being completed. In at least some embodiments, a single welder can be used over a wide range of materials. In some embodiments, end-uses that require components to be in generally mating engagement for further processing can benefit from a material positioner.

A spark absorbing system for use with a cutting torch, comprises a cap having at least one spark opening therethrough and a spark capture unit coupled to the cap and positioned to capture sparks passing through the spark opening. The spark capture unit may comprise a tube extending from the cap and may include an outlet and a flow-reduction element positioned between the cap and the outlet and/or a spark accumulator between the cap and the spark capture unit. The flow-reduction element may comprise at least one baffle, screen or mesh. The spark absorbing system may further include a spark ramp extending from the cap opposite the spark capture unit and/or a shield, which may define a cutting space between the shield and the cap.