4089 results about "Mechanical vibration" patented technology

The present invention provides a new family of ultrasonically powered medical devices and systems for powering such devices. Disclosed are methods for improving the overall power transfer efficiency of devices according to the present invention, as well as a wide variety of medical uses for such devices and systems. Devices of the present invention comprise a transducer that, during operation, converts electrical energy into high frequency, low amplitude mechanical vibrations that are transmitted to a driven-member, such as a wheel, that produces macroscopic rotary or linear output mechanical motions. Such motions may be further converted and modified by mechanical means to produce desirable output force and speed characteristics that are transmitted to at least one end-effector that performs useful mechanical work on soft tissue, bone, teeth and the like. Power systems of the present invention comprise one or more such handheld devices electrically connected to a power generator. Examples of powered medical tools enabled by the present invention include, but are not limited to, linear or circular staplers or cutters, biopsy instruments, suturing instruments, medical and dental drills, tissue compactors, tissue and bone debriders, clip appliers, grippers, extractors, and various types of orthopedic instruments. Devices of the present invention may be partly or wholly reusable, partly or wholly disposable, and may operate in forward or reverse directions, as well as combinations of the foregoing. The devices and systems of the present invention provide a safe, effective, and economically viable alternative source for mechanical energy, which is superior to AC or DC (battery) powered motors, compressed air or compressed gas, and hand powered systems.

A bone conduction hearing aid system for generating bone conduction vibrations is disclosed. The bone conduction hearing aid system has an external hearing aid unit with a vibrator and a skin contact pressure plate. The skin contact pressure plate is placed on an outside of the external hearing aid unit and the skin contact pressure plate is magnetically attached to an implanted unit anchored to the skull under the skin. The vibrator transforms an electrical signal into mechanical vibrations and the skin contact pressure plate allows transmission of the vibrations from the vibrator to the implanted unit when the external hearing aid unit is magnetically fixed to the implanted unit.

A canal hearing device has a subminiature filament assembly which vibrates and directly drives the tympanic membrane (eardrum) and imparts audible mechanical vibrations thereto. The filament assembly is partially supported by the tympanic membrane via capillary adhesion thereto and is dynamically coupled to a stationary vibration force element position at a distance from the tympanic membrane within the ear canal. The elongated filament assembly is freely movable within an operable range and is essentially floating with respect to the vibration force element. In a preferred embodiment, the vibrational filament assembly comprises a magnetic section which is insertable into the air-core of an electromagnetic coil. The filament assembly is coupled to the tympanic membrane via an articulated tympanic contact coupler.

A cutting tool to be utilized in the resection or removal of bone tissue from patients includes a handle that tensions a wire or cable-like cutting member with a small diameter between at least two features on the handle to present a thin cutting profile. The design of the cutting tool includes features that protect against soft tissue damage and minimize the incision size necessary to utilize the tool. Some embodiments feature details of the cutting tool that interface with a surgical cutting guide system. Other embodiments describe a cutting tool with a selectively changeable length of the cutting profile of the wire cutting member. In one embodiment, the wire cutting member of the cutting tool is energized by mechanical energy in the form of a unidirectional rotation of the cutting member, a mechanical vibration of the cutting member, or an oscillating movement of the wire cutting member.

A method of characterizing a tissue present in a predetermined location of a body of a subject, the method comprising: generating mechanical vibrations at a position adjacent to the predetermined location, the mechanical vibrations are at a frequency ranging from 10 Hz to 10 kHz; scanning the frequency of the mechanical vibrations; and measuring a frequency response spectrum from the predetermined location, thereby characterizing the tissue.

A device for the transdermal delivery of a therapeutic agent at a treatment site comprising a housing containing: a mechanical vibration element; a light source; a heating and/or cooling clement; a power source for powering said mechanical vibrational element, light source, and heating element; and an electronic control module.

A finite element model of an ear stored on a computer readable medium having logic representing a three-dimensional geometric model of the ear; logic for meshing individual anatomical structures of the ear accounting for whether the anatomical structures include at least one of air, liquid material and solid material; logic for assigning material properties for each anatomical structure based on at least one physical property of each anatomical structure; logic for assigning boundary conditions for some of the anatomical structures indicative of interaction between such anatomical structures; and logic for employing acoustic-structural coupled analysis to the anatomical structures of the ear to generate data indicative of the acoustic effect on mechanical vibration transmission in the ear. Various embodiments of “one-chamber” and “two-chamber” analyses and models are described.

An apparatus for producing an electrosensory sensation to a body member (120). The apparatus comprises one or more conducting electrodes (106), each of which is provided with an insulator (108). When the body member (120) is proximate to the conducting electrode, the insulator prevents flow of direct current from the conducting electrode to the body member. A capacitive coupling over the insulator (108) is formed between the conducting electrode (106) and the body member (120). The conducting electrodes are driven by an electrical input which comprises a low-frequency component (114) in a frequency range between 10 Hz and 500 Hz. The capacitive coupling and electrical input are dimensioned to produce an electrosensory sensation. The apparatus is capable of producing the electrosensory sensation independently of any mechanical vibration of the one or more conducting electrodes (106) or insulators (108).

A single integrated sensing chip with multi-functions for tire pressure monitor system (TPMS) comprises: a pressure sensor, an accelerometer, a temperature sensor, and an ASIC (Applied Specific Integrated Circuit) that implements signal conditioning and digitalizes pressure output. The accelerometer incorporated for vehicle motion is used to determine centrifugal acceleration or three-axial acceleration of the rotating wheel, and used for the TPMS sensor wake-up from “power down” mode, or when the velocity of the vehicle is higher than certain speed threshold, which is more robust and lower in cost than the mechanical vibration switch and is naturally integrated with the electronic control unit. The accelerometer can be used for regular motion sensing to monitor the dynamic stability. The integrated sensor system can be packaged into one plastic package first, and then surface mounted to the printed circuit board, or the multi-function single chip can be wafer bonded on the wafer level first and diced into many individual chips, with each chip being directly attached on to the printed circuit board by wire bonding or flip-chip assembly.

An implant suitable for being anchored with the aid of mechanical vibration in an opening provided in bone tissue. The implant is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral implant surface and the compression axis. The implant includes a coupling-in face which serves for coupling a compressing force and the mechanical vibrations into the implant, which coupling-in face is not parallel to the compression axis. The implant also includes a thermoplastic material which, in areas of the local distance enlargement, forms at least a part of the peripheral surface of the implant.

A light diffuser (10), which is particularly suitable for introducing diffuse light into a tissue, is produced by interpenetration of a diffuser material in a liquid state into a boundary layer (4) of a porous shaping material, by which process a diffuser surface is formed having a surface structure which represents essentially a negative of the pore structure of the shaping material and comprises undercut structures induced by a surface tension. The light diffuser (10) is, for example, produced by introducing a diffuser blank (1) comprising material which is liquefiable through mechanical vibration into the shaping material and simultaneously stimulating it with mechanical vibrations, such that the liquefiable material liquefies at least there where it is in contact with the shaping material and is pressed into the shaping material.

A self-propelled forage harvester includes an overload clutch inserted into the driveline of a crop conveying element of crop pick-up arrangement of the harvesting machine. The overload clutch generates acoustic and/or mechanical vibrations when a defined torque is exceeded, and a knock sensor is provided for sensing when the overload clutch is operating in an overloaded condition. The knock sensor sends a signal to a control arrangement including a signal processor which recognizes a vibration pattern representative of an overload, and in response to such a pattern, sends a control signal for shutting off the drive to various driven components of the harvester.

A portable device and a method for providing a voice recognition service are disclosed. The portable device includes a mechanical vibration sensor configured to sense vibrations having a magnitude equal to or larger than a threshold and generate an electrical signal, a motion sensor configured to sense a motion of the portable device, an audio sensor configured to receive a voice command, a sensor hub configured to control a plurality of sensors including the motion sensor and the audio sensor, and a main processor configured to execute an application and control the portable device. When the portable device is placed in standby mode, upon receipt of the electrical signal from the mechanical vibration sensor, the sensor hub is configured to switch from inactive state to active state and activate the motion sensor.

Methods and devices to treat discogenic lumbar back pain are disclosed. Electrodes are implanted within the anterior epidural space of the patient. A pulse generator that is connected to the electrodes delivers electrical impulses to sympathetic nerves located within the posterior longitudinal ligament (PLL) of the lumbar spine and outer posterior annulus fibrosus of the intervertebral disc. In alternate embodiments, energy directed to nerves in the PLL may be from light or mechanical vibrations, or the nerves may be cooled. The electrodes may also be used diagnostically to correlate spontaneous nerve activity with spinal movement, fluctuations in autonomic tone and the patient's experience of pain. The electrodes may also be used to generate diagnostic evoked potentials. The diagnostic data are used to devise parameters for the therapeutic nerve stimulation. Automatic analysis of the data may be incorporated into a closed-loop system that performs the nerve stimulation automatically.

Electromechanical devices that generate an electrical signal in response to an external source of mechanical vibrations can operate as a sensor of vibrations and as an energy harvester for converting mechanical vibration to electrical energy. The devices incorporate a magnet that is movable through a gap in a ferromagnetic circuit, wherein a coil is wound around a portion of the ferromagnetic circuit. A flexible coupling is used to attach the magnet to a frame for providing alignment of the magnet as it moves or oscillates through the gap in the ferromagnetic circuit. The motion of the magnet can be constrained to occur within a substantially linear range of magnetostatic force that develops due to the motion of the magnet. The devices can have ferromagnetic circuits with multiple arms, an array of magnets having alternating polarity and, encompass micro-electromechanical (MEM) devices.

An opto-acoustoelectric device encompasses a diaphragm having a diffraction grating, the diaphragm is susceptible to a vibration driven by an external force; a light source oriented to irradiate the diffraction grating; and a photo detector configured to detect the light diffracted by the diffraction grating and to convert the detected light into an electric signal. The electric signal corresponds to a displacement of the vibration in the diaphragm.

Disclosed is a laser treatment device which is designed to stimulate hair growth and prevent hair loss by applying LLLT (Low Level Laser Therapy) to the scalp using laser light of a specified wavelength. The laser treatment device also provides ultra-low frequency mechanical vibrations to the scalp and the combination of light and vibrations is designed to produce synergy. Laser light, which may be blocked by remaining hair, may nonetheless reach the scalp using light-emitting elements attached to the ends of tooth-shaped protrusions. The present laser treatment device is characterised by a bendable applicator having said tooth-shaped protrusions such that it can change shape in accordance with the curvature of the head, which increase the efficiency of light and vibrational energy delivery. The laser treatment device is optimally controlled with a means to measure the light and vibrational energy supplied to the scalp, and the applicator may also be used as a wearable headset, which provide greater simplicity in mounting and removal.