Patent
Microwave ablation instrument with a directional radiation pattern
Dany Berube,Jules Gauthier +1 more
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TLDR
In this paper, a medical instrument is described, which includes a transmission line suitable for the transmission of electromagnetic energy and an antenna coupled to the transmission line, which is configured for generating an electromagnetic field sufficiently strong to cause tissue ablation.Abstract:
A medical instrument is disclosed The medical instrument includes a transmission line suitable for the transmission of electromagnetic energy and an antenna coupled to the transmission line The antenna is configured for generating an electromagnetic field sufficiently strong to cause tissue ablation The medical instrument further includes a reflector arranged to be electrically coupled to the transmission line The reflector is positioned laterally to a first side of the antenna and configured for redirecting a portion of the electromagnetic field to a second side of the antenna opposite the reflector, wherein a majority of the electromagnetic field is directed away from the second side of the antennaread more
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Patent
Vessel sealer and divider
TL;DR: An endoscopic bipolar forceps as mentioned in this paper includes an elongated shaft having opposing jaw members at a distal end thereof, which are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to each another to a second position wherein jaw members cooperate to grasp tissue therebetween.
Patent
Vessel sealing system
TL;DR: In this article, an electrosurgical system is described, which includes an electric generator adapted to supply electrosurgery energy to tissue, as well as a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance.
Patent
Articulating mechanism for remote manipulation of a surgical or diagnostic tool
David J. Danitz,Adam Gold +1 more
TL;DR: In this paper, the proximal and distal segments are connected by a set of cables in such a way that each proximal segment forms a discrete pair with a distal segment, which allows each segment pair to move independently of one another and also permits the articulating mechanism to undergo complex movements and adopt complex configurations.
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Link systems and articulation mechanisms for remote manipulation of surgical or diagnostic tools
TL;DR: Articulating mechanisms, link systems, and components thereof, useful for a variety of purposes including, but not limited to, the remote manipulation of instruments such as surgical or diagnostic instruments or tools are provided in this paper.
Patent
Vessel sealing instrument with electrical cutting mechanism
TL;DR: An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween as mentioned in this paper.
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Patent
Articulated unidirectional microwave antenna systems for cardiac ablation
TL;DR: An improved assembly for steering and orienting a functional element at the distal end of a catheter tube holds the functional element with its major axis aligned with the axis of the tube for convenient steering to a tissue site as discussed by the authors.
Patent
Method and apparatus determining electrode/tissue contact
TL;DR: In this paper, the maximum magnitudes (36) of successive ohmic resistance portions, the initial slopes (38) for successive combined resistive portions, and the amplitudes (40) at a preset time interval from the start of each pulse were measured.
Patent
Percutaneous transluminal microwave catheter angioplasty
Arye Rosen,Paul Walinsky +1 more
TL;DR: In this article, a catheter angioplasty using radio frequency (RF) or microwave frequency power is performed using a coaxial transmission line terminated at its distal end in an antenna.
Patent
Microwave devices for medical hyperthermia, thermotherapy and diagnosis
TL;DR: In this article, a radiating antenna system is positioned within the tissue to radiate electromagnetic energy into a portion of the tissue desired to be heated, and a plurality of antenna elements are positioned for receiving and/or reflecting the radiated electromagnetic energy from the radiating antennas system.
Patent
Microwave ablation catheters having antennas with distal fire capabilities
Thomas H. Campbell,Peter Sturzu +1 more
TL;DR: A variety of improved antenna arrangements for ablation catheters and methods for constructing catheter with these antenna arrangements are described in this paper, where an elongated flexible tubular member adapted to be inserted into a vessel in the body of a patient is described.