摘要:
A catheter includes a longitudinally extending body having proximal and distal ends and defining at least one lumen that extends longitudinally from the proximal end through the body to the distal end and looping back to the proximal end. A liquid metal, e.g. an alloy of gallium and indium, such as galistan, is disposed in the lumen. In another aspect, a catheter includes a longitudinally extending body defining first and second lumens. An electrically driven device is coupled to a distal end of the body and is in electrical communication with the first and second lumens. A power source is in electrical communication with the first and second lumens and a liquid metal is disposed in the first and second lumens to provide an electrical conduit between the power source and electrically driven device. Each lumen may loop from a proximal end of the body to the distal end back to the proximal end.
摘要:
An apparatus and method for bonding polymeric materials is provided. The apparatus and method both utilize ferromagnetic materials in association with the polymeric materials to be bonded together. The polymeric materials, and the ferromagnetic material, are placed within a magnetic field, which causes hysterisis losses in the magnetic field, and thus elevation in the temperature of both the ferromagnetic material and the polymeric materials to the point where the polymeric materials melt and fuse together. The ferromagnetic materials only rise in temperature to their Curie temperatures, at which point the hysterisis losses cease, and the polymeric material stops being heated. Removing the electromagnetic field allows for cooling and fusing. An interface composition may also be placed between the two polymeric materials to be bonded.
摘要:
An implantable drug delivery device including at least one flexible elongate element, the flexible elongate element including a polymeric carrier for a drug and anchors for attachment to a vessel wall of the patient.
摘要:
The invention relates to a method for automated invoice generation and settlement from a payer (50) to a payee (20), comprising the steps of recording the invoice data necessary for carrying out the payment process for the invoice settlement, generation and printing of an invoice document, (10, 18), application of a memory element (12) to the invoice document, sending the invoice document (10, 18) with memory element (12) to the payer (50), read out of the invoice data from the memory element (12) by means of a reading device (52), transmission of the read-out invoice data to an automatic payment transfer system (30) and carrying out the payment process to the payee (20), based on the read-out invoice data. Said method permits a simple and economical transmission of the data necessary for an automated execution of an invoice settlement together with an invoice document.
摘要:
A method of making drug eluting stents comprises forming ceramic surface coatings of two or more levels of porosity on a stent body. The less porous coating is more conducive to endothelial cell growth, while the more porous coating is better suited for storing and releasing drugs. The surface coatings of different porosities can be produced by coating stent body surface of differing roughness with coatings made by sol-gel method. Differing roughness of the stent body surface can be produced by selective etching of the stent body surface.
摘要:
An apparatus having a device for moving a liquid comprises a piezoacoustic resonator element (11) having at least one piezoelectric layer (110) and two electrodes (111 and 112) present on the piezoelectric layer (110). The piezoacoustic resonator element (11) is designed such that, owing to a voltage being applied to the piezoelectric layer (110) by means of the electrodes (111 or 112), a volume oscillation of the piezoelectric layer (110) is excited at a resonant frequency. The piezoelectric resonator element (11) can be acoustically coupled in a suitable manner to a liquid for the purpose of transmitting the excited oscillation into the liquid for the purpose of moving the liquid. The apparatus may be in the form of a micromixer or in the form of a micropump and may comprise, in addition, sensor elements (41) for detecting the attachment of substance.
摘要:
An apparatus comprises a dispenser, a coherent energy source and an beam steering system. The dispenser defines a path of a droplet. The beam steering system is coupled to the coherent energy source and is configured to define a beam path of the coherent energy source. The beam path of the coherent energy source is disposable across the dispenser path at an interaction location. The beam steering system and coherent energy source are collectively configured such that at least one of a direction, a velocity and an acceleration of the droplet is modified within the interaction location.
摘要:
Medical balloons and/or catheters are disclosed that include a wall that includes a composite material. The composite material includes a polymeric material and particles that include an allotrope of carbon. In some instances, at least some of the particles are covalently bonded to the polymeric material. Methods for making such medical balloons and/or catheters are also disclosed.
摘要:
Methods of forming support layers for use in catheters using having a support layer included, and stents incorporating coatings of photosensitive polymerizable resins and stents including fibers coated with photosensitive polymerizable resins. A fiber is coated with a PPC resin and incorporated into a support structure for a catheter. Portions of the PPC are polymerized by exposure to light of a desired wavelength, causing increased rigidity and strength to the polymerized portions. As the PPC is polymerized, the fibers coated by the PPC resins become stronger and change the flexibility of devices incorporating such fibers. Additional embodiments include stents incorporating PPC coatings and methods of using such stents, including polymerizing a PPC coating after inserting a self-expanding or balloon-expandable stent.