Abstract:
An active ossicular replacement device is configured to couple the malleus to the stapes, and conduct sound through the vibratory structures of the ear in response to the transmitted electromagnetic energy. The electromagnetic energy may comprise light so as to decrease interference from sources of noise external to the user. The prosthetic device may comprise an assembly that can be implanted in the middle ear in a manner that simplifies surgery. The assembly may comprise a narrow cross-sectional profile such that the assembly can be positioned in the middle ear through an incision in the eardrum, for example without cutting bone that defines the shape of the ear canal or the shape of the middle ear. The prosthetic device can be sized to the user based on a measurement of the ear.
Abstract:
A hearing system for producing audio signals perceptible to an individual. The hearing system includes a transducer having a surface adapted to attach to a middle-ear acoustic member of the individual, wherein the transducer is responsive to variations in a magnetic field emitted by a transmitter to directly vibrate the acoustic member. The transmitter is supported within an ear canal of the individual. The transmitter has a coil and a core positioned so that the distal end of the core is located at a predetermined distance and orientation relative to the transducer.
Abstract:
A biological vessel harvesting device is provided which separates a segment of a biological vessel from adventitia surrounding the biological vessel while simultaneously cauterizing and sectioning tributaries extending from the separated vessel segment. The biological vessel harvesting device includes an outer catheter and a vessel grasping mechanism positioned within a lumen of the outer catheter for holding an end of a segment of the biological vessel to be harvested, the outer catheter being movable relative to the vessel grasping mechanism such that the vessel grasping mechanism and the vessel segment attached thereto can be drawn into the outer catheter lumen. The biological vessel harvesting device also includes a cautery-sectioning system positioned adjacent the outer catheter distal end in a ring around the outer catheter lumen. The cautery-sectioning system has a cautery mechanism for cauterizing tributaries extending from the vessel segment about the circumference of the vessel segment and a sectioning device function for sectioning the cauterized tributaries.
Abstract:
A probe for translumenal circumferential delivery of energy through a biological lumen comprises a catheter which is constructed and arranged to be placed within a particular biological lumen. A plurality of guide channels are formed within the catheter extending from near the proximal end to near the distal end of the catheter. The guide channels include respective diverting regions near the distal end which bend radially toward the circumference of the catheter. Energy delivery devices, such as optical fibers or electrical conductors, are placed within the guide channels and transmit energy to the distal end of the device. The energy delivery devices have relatively flexible portions near the distal ends such that when extended through the diverting region of the guide channels they are deflected radially in a direction to intersect the circumference of the biological lumen. An adaptor is coupled with the energy delivery device to supply energy for transmission to the tissue at the distal end of the device. Thus, the energy delivery device may be positioned in a withdrawn position in the catheter so that the distal end of the energy delivery device lies within the guide channel, and in an extended position so that the distal end of the energy delivery device is diverted by the diverting region of the guide channel and extends into the tissue to be treated.
Abstract:
A surgical probe, and procedure using the same, enabling a surgeon to cut body tissue by delivering energy, such as a laser beam, to the body tissue and without removing the instrument to cauterize the body tissue by direct application of electric current. The surgical probe includes an elongated member having a fiber optic positioned on a longitudinal axis of the elongated member and pair of elongated electrodes that span an entire length of the elongated member. The elongated electrodes slide lengthwise in a direction parallel to the longitudinal axis. During cutting procedures, the distal ends of the electrodes are in a retracted position not beyond the distal end of the elongated member, and during cauterization procedures, the distal ends of the electrodes are in an extended position beyond the distal end of the elongated member. In a preferred embodiment, the distal ends of the electrodes are pre-bent so as to converge toward each other as they are extended beyond the distal end of the elongated member.
Abstract:
A method and apparatus are described for treating hearing impairment in a human. The external auditory canal is substantially enlarged surgically in region proximate the ear drum. An electronic hearing aid is placed in this region. The hearing aid has a external housing molded to conform with the shape of the surgically enlarged region.
Abstract:
An output assembly is sized for placement in the middle and inner ear, such that removal of bone can be decreased. The output assembly may comprise at least one photo detector, a demultiplexer and an electrode array sized to pass through an incision in the eardrum. An input transducer assembly is configured to transmit a multiplexed optical signal to the output assembly. The input assembly can be configured to transmit the multiplexed optical signal through the eardrum, such that tissue removal can be decreased and the device can be placed without removal of bone, for example. The multiplexed optical signal may comprise a pulse width modulated signal so as to decrease the effect of non-linearities of the light source and light detector and provide quality sound to the user.
Abstract:
The volume of a hyperinflated lung compartment is reduced by sealing a distal end of the catheter in an airway feeding the lung compartment. Air passes out of the lung compartment through a passage in the catheter while the patient exhales. A one-way flow element associated with the catheter prevents air from re-entering the lung compartment as the patient inhales. Over time, the pressure of regions surrounding the lung compartment cause it to collapse as the volume of air diminishes. Residual volume reduction effectively results in functional lung volume expansion. Optionally, the lung compartment may be sealed in order to permanently prevent air from re-entering the lung compartment.
Abstract:
Systems, devices and methods for communication include an ear canal microphone configured for placement in the ear canal to detect high frequency sound localization cues. An external microphone positioned away from the ear canal can detect low frequency sound, such that feedback can be substantially reduced. The canal microphone and the external microphone are coupled to a transducer, such that the user perceives sound from the external microphone and the canal microphone with high frequency localization cues and decreased feedback. Wireless circuitry can be configured to connect to many devices with a wireless protocol, such that the user can receive and transmit audio signals. A bone conduction sensor can detect near-end speech of the user for transmission with the wireless circuitry in noisy environment. Noise cancellation of background sounds near the user can improve the user's hearing of desired sounds.
Abstract:
A hearing aid device for placement in an ear of a user includes an elongate support and a transducer. The elongate support has a proximal portion and a distal end, and the transducer is attached to the elongate support near the distal end. The support is adapted to position the transducer near an eardrum while the proximal portion is placed at the location near an ear canal opening. The elongate support is sized to minimize contact with the ear between the proximal portion and distal end. The elongate support permits sound waves to travel along the ear canal. In some embodiments, a microphone is positioned in the ear canal along the support, for example inside the support, to provide directionally dependent sound localization cues, and the transducer on the distal end of the elongate support comprises a coil assembly coupled to a magnet positioned on the tympanic membrane.