Abstract: Apparatus, including a guidewire having a distal end, that is configured to be inserted into proximity with a nasal sinus of a patient, the guidewire having a lumen. The apparatus also includes an optic fiber, traversing the lumen, configured to illuminate the distal end, and a coil, wound around the optic fiber and located within the lumen at the distal end, configured to generate a signal in response to a magnetic field interacting with the coil. A processor is configured to receive the signal and to evaluate a location of the distal end in response to the signal.
Abstract: A dilation catheter includes a catheter shaft, an expandable element, and a navigation sensor. The catheter shaft has a proximal shaft portion defining a proximal shaft end, a distal shaft portion defining a distal shaft end, and a working lumen extending between the proximal and distal shaft ends. The expandable element is disposed on the distal shaft portion proximally of the distal shaft end, and is configured to expand to dilate an anatomical passageway of a patient. The navigation sensor is arranged at the distal shaft portion, and is configured to generate a signal corresponding to a location of the distal shaft portion within the patient. In various examples, the dilation catheter may further include a bulbous distal tip, and the navigation sensor may be arranged within the bulbous distal tip.
Abstract: A medical guidewire includes a flexible spiral coil, a fiber, and a strengthening element. The coil is configured to guide a medical device into a patient body. The fiber extends along at least part of the coil, is coupled to the at least part of the coil at one or more first predefined locations and is configured to mechanically strengthen the at least part of the coil. The strengthening element is coupled to one or more second predefined locations along a distal section of the coil, and is configured to mechanically strengthen the distal section.
October 25, 2016
Date of Patent:
March 31, 2020
Biosense Webster (Israel) Ltd., Acclarent, Inc.
Vadim Gliner, Assaf Govari, Ghislain G. Sema
Abstract: An apparatus includes a body, an upright member, a frame, and a plurality of field generating elements. The body is configured to be positioned between a patient's back and a backrest of a chair. The upright member extends upwardly from the body. The frame has a curved configuration configured to partially surround a patient's head. The field generating elements are configured to generate an electromagnetic field around a patient's head partially surrounded by the frame.
Henry F. Salazar, Jetmir Palushi, William J. Kane, Fatemeh Akbarian, Ika Dekel, Noam Racheli, Helen Wolfson, Nawid Mehrzai, Jephrey S. Rodriguez, Ketan P. Muni, Andrew Drake, David A. Smith, Jr., Scott A. Kirchner, Todd A. Veloni, Itamar Bustan
Abstract: Physicians performing invasive procedures require accuracy and precision when working with surgical tools. Surgical procedures are increasingly becoming minimally invasive, with physicians operating using cameras to view the surgery site and directing their tools through oculars or video displays. Ideally, the physician should be able to perform the invasive procedure while simultaneously observing both the real-time image of the patient and additional data critical for his medical decisions about the manipulation of the surgical tool and the next surgical step. The augmented reality navigation system of the present disclosure provides tool location visibility for invasive procedures through the use of location sensors included on a camera and/or on the tools used during a procedure. A location tracking system determines and monitors the locations of the tools and camera based on the characteristics of signals detected by the sensors and displays informational overlays on images obtained with a camera.
December 21, 2018
June 27, 2019
Biosense Webster (Israel) Ltd., Acclarent, Inc.
Abstract: Physicians performing invasive procedures utilize instruments inserted into a human body to perform the procedures. Such procedures typically involve actions to be performed on specific targeted anatomical structures. During the procedure, nearby anatomical structures unrelated to the procedure should generally be avoided. A system and techniques are provided herein for monitoring the position of such unrelated nearby anatomical structures relative to one or more surgical instruments. The system emits a warning to a human operator such as a surgeon if one of the instruments is too close to a monitored anatomical structure.
December 26, 2017
June 27, 2019
Biosense Webster (Israel) Ltd., ACCLARENT, Inc.
Abstract: A method for assessing functionality of a valve in a heart includes providing a position sensor that is a wireless transponder for transmitting or receiving an ultrasound wave for determination of position coordinates of the position sensor at the point; implanting the wireless transponder at a point on the valve; and using a position determining system for determining whether the valve is functioning properly based on position coordinates of the wireless transponder.
Abstract: Assessment apparatus is provided, including a set of one or more radiators, which is adapted to generate an energy field at at least one fundamental frequency. A receiving sensor is adapted to generate a first signal responsive to the energy field when an interfering article is at a first location relative to the receiving sensor, and is adapted to generate a second signal responsive to the energy field when the interfering article is at a second location relative to the receiving sensor. A control unit is adapted to (a) receive and analyze the first and second signals, in order to compute a fingerprint signal characteristic of the interfering article, and (b) store, in a database, data indicative of the fingerprint signal, in association with an identity of the interfering article.
Abstract: The disclosure concerns position-sensing apparatus, having radiators which generate electromagnetic energy fields and a position sensor which generates sensor signals responsive to the energy fields. Reference elements are placed at respective positions near the sensor to generate reference signals responsive to the energy fields. And, a control unit is used to calculate a position of the sensor based on sensor signals and reference element errors in order to account for the effects of interfering metal objects.
Abstract: A method for calibrating a medical system capable of generating a magnetic field for tracking a position of a medical device has various steps such as defining a mapping volume within the generated magnetic field and placing a metallic object within the mapping volume. A sensor is aligned at a first point within the mapping volume and the magnetic field at the first point is measured with the sensor to establish a first coordinate position (Xi, Yi, Zi). An interpolation technique in one embodiment and an extrapolation technique in another embodiment are used in the calibration method.
Abstract: A method for delivering a cell to a heart of a patient comprises the steps of providing an apparatus for intracardiac drug administration comprising a catheter wherein the catheter has at least one position sensor which generates signals responsive to the position of a catheter and a drug delivery device for delivering the cell. The catheter is inserted into a chamber of the heart at a site and the cell is delivered to the site with the drug delivery device in response to the signals from the position sensor. Typical cells useful for delivery are either myoblasts or myocytes. These cells may be utilized as either an expression vector for promoting angiogenesis or for cell transplantation and fusion through myogenesis.
Abstract: Apparatus for tracking an object includes a plurality of field generators, which generate electromagnetic fields at different, respective frequencies in a vicinity of the object, and a radio frequency (RF) driver, which radiates a RF driving field toward the object. A wireless transponder is fixed to the object. The transponder includes at least one sensor coil, in which a signal current flows responsive to the electromagnetic fields, and a power coil, which receives the RF driving field and conveys electrical energy from the driving field to power the transponder. The power coil also transmits an output signal responsive to the signal current to a signal receiver, which processes the signal to determine coordinates of the object.
Abstract: Apparatus for performing a medical procedure on a tissue within a body of a subject includes a wireless tag configured to be fixed to the tissue and adapted to emit radiation, thereby causing first signals to be generated indicative of a location of the tag in the body. An invasive medical tool includes a probe, which is adapted to penetrate into the body so as to reach the tissue. A handle is fixed proximally to the probe, for manipulation by an operator of the tool. A display, mounted on the handle, presents a visual indication to the operator of an orientation of the probe relative to the tag. A processing unit processes the first signals so as to determine coordinates of the tag relative to the probe, and drives the display responsive to the coordinates.
Abstract: An Apparatus for determining the disposition of an object relative to a reference frame includes at least one field generator, which generates an electromagnetic field in a vicinity of the object and at least one transducer, which is fixed to the object. The at least one transducer vibrates at a predetermined vibrational frequency and emits energy, responsive to an interaction of the electromagnetic field therewith. One or more detectors in a vicinity of the object are also utilized to detect the energy emitted by the transducer and generate signals in response thereto. A signal processor is also included for receiving and processing the detector signals to determine coordinates of the object.
Abstract: Apparatus for locating a tissue within a body of a subject includes an acoustic tag configured to be fixed to the tissue and adapted, responsive to acoustic waves incident thereon, to return acoustic echoes. Acoustic transducers are placed at respective positions so as to direct the acoustic waves into the body toward the tissue and to receive the acoustic echoes returned from the tag responsive to the acoustic waves, generating first signals responsive to the received echoes. Transducer position sensors are coupled respectively to the acoustic transducers so as to generate second signals indicative of the respective positions of the acoustic transducers in an external frame of reference. A processing unit processes the first signals and the second signals so as to determine coordinates of the acoustic tag in the external frame of reference.
Abstract: Apparatus for determining the position of an object within a body of a subject includes at least one acoustic wave generator, adapted to direct a first acoustic wave toward the body at a first frequency. An acoustic tag is adapted to be fixed to the object, the tag including a shell defining a cavity therein and a medium contained within the shell, such that responsive to incidence thereon of the first acoustic wave, the tag emits a second acoustic wave at a second frequency, different from the first frequency. One or more detectors are adapted to detect the second acoustic wave and to generate signals responsive thereto. A signal processor is coupled to process the signals so as to determine coordinates of the object in the body.
Abstract: Apparatus is provided for tracking an object in a body of a patient in the presence of an interfering article. A set of one or more radiators are adapted to generate an energy field at a fundamental frequency in a vicinity of the object. A position sensor, fixed to the object, is adapted to generate a signal responsive to the energy field. A control unit has access to a database of one or more harmonic frequency patterns associated with one or more respective specific types of interfering articles.
Abstract: A method for ablating tissue in an organ inside a body of a subject includes bringing a probe inside the body into a position in contact with the tissue to be ablated, and measuring one or more local parameters at the position using the probe prior to ablating the tissue. A map of the organ is displayed, showing, based on the one or more local parameters, a predicted extent of ablation of the tissue to be achieved for a given dosage of energy applied at the position using the probe. The given dosage of energy is applied to ablate the tissue using the probe, and an actual extent of the ablation at the position is measured using the probe subsequent to ablating the tissue. The measured actual extent of the ablation is displayed on the map for comparison with the predicted extent.
Abstract: A medical device and position sensor combination for use in medical applications comprises a position sensor having a core made of a high permeable material The core material is made of a Wiegand effect material comprising a mixture of cobalt, vanadium, and iron. The position sensor has an outer diameter of approximately 0.4 mm and is used in a medical device having an outer diameter of approximately 0.67 mm.
Abstract: A method for implanting a medical device between tissue comprises the steps of providing a catheter having a body and a distal end thereof wherein the catheter includes an implantable device comprising a housing having a proximal end and a distal end and a longitudinal axis. The implantable device further includes a first set of anchoring members operatively connected to the proximal end of the housing and a second set of anchoring members operatively connected to the distal end of the housing. Both sets of anchoring members are movable between a collapsed position and a deployed position. Each set of anchoring members includes ring members connected to a housing of the device. Further steps of the method include inserting the distal end of the catheter into tissue and disposing the medical device at least partially from the distal end of the catheter.