Patent classifications
A61B2017/00176
System and method for pulsed ultrasonic power delivery employing cavitation effects
A method and apparatus for delivering energy during a surgical procedure such as phacoemulsification is provided. The method and apparatus include applying energy during at least one pulsed energy on period, comprising applying energy during a series of short burst periods, the short burst periods interspersed by short rest periods. The method and apparatus further comprise delivering minimal energy during a long off period, the long off period comprising a relatively long period when minimal energy is applied, wherein one long off period follows each pulsed energy on period. The short burst periods and the short rest periods are relatively brief in duration as compared with the long off period.
Apparatus and method for reducing laser beam attenuation in a liquid medium
A method of treating a mobile target tissue with a laser beam includes: providing a laser device for generating a laser beam and providing an optical fiber having a delivery end for guiding the laser beam to the target tissue; a controller causes the laser device to generate one or more laser pulses substantially along the same longitudinal axis. The controller causes the laser device to provide one or more laser pulses. The one or more pulses are selected to allow a vapor bubble formed by the one or more pulse to expand an amount sufficient to displace a substantial portion of the liquid medium from the space between the delivery end of the fiber and the target tissue. The one or more pulses are delivered to the target tissue through the vapor bubble after the vapor bubble has reached its maximum extent and has begun to collapse to reduce retropulsion of the mobile target tissue.
ULTRASONIC TREATMENT INSTRUMENT FOR ARTICULATIONS, AND ULTRASONIC TREATMENT SYSTEM FOR ARTICULATIONS
An ultrasonic treatment instrument for articulations has a bone abrasion mode in which vibration is performed at a first frequency and a first amplitude, and a cartilage dissolution mode in which vibration is performed at a second frequency which is higher than the first frequency, and a second amplitude which is less than the first amplitude, wherein a first vibration velocity, which is a product of the first frequency and the first amplitude, and a second vibration velocity, which is a product of the second frequency and the second amplitude, coincide or substantially coincide.
SYNERGISTIC PULSE GENERATION CIRCUIT, GENERATION DEVICE, AND GENERATION METHOD THEREFOR
A synergistic pulse generation circuit comprises a first power supply, a first pulse generation module electrically connected to the first power supply, a second power supply, and a second pulse generation module electrically connected to the second power supply. The first pulse generation module comprises n stages of first pulse generation units, each of which is configured to receive electrical energy provided by the first power supply and store same, so that x of the first pulse generation units receiving a first control signal discharge to form a first pulse applied to a load. The second pulse generation module comprises m stages of second pulse generation units, each of which is configured to receive electrical energy provided by the second power supply and store same, so that y of the second pulse generation units receiving a second control signal discharge to form a second pulse applied to the load.
Method for operating surgical instrument systems
A method for adjusting the operation of a surgical instrument using machine learning in a surgical suite is disclosed.
SURGICAL LASER SYSTEMS AND LASER LITHOTRIPSY TECHNIQUES
A surgical laser system (100) includes a first laser source (140A), a second laser source (140B), a beam combiner (142) and a laser probe (108). The first laser source is configured to output a first laser pulse train (144, 104A) comprising first laser pulses (146). The second laser source is configured to output a second laser pulse train (148, 104B) comprising second laser pulses (150). The beam combiner is configured to combine the first and second laser pulse trains and output a combined laser pulse train (152, 104) comprising the first and second laser pulses. The laser probe is optically coupled to an output of the beam combiner and is configured to discharge the combined laser pulse train.
In some embodiments, a surgical laser system includes a laser generator (102), a laser probe (108), a stone analyzer (170), and a controller (122). The laser generator is configured to generate laser energy (104) based on laser energy settings (126). The laser probe is configured to discharge the laser energy. The stone analyzer has an output relating to a characteristic of a targeted stone (120). The controller comprises at least one processor configured to determine the laser energy settings based on the output.
In some embodiments of a method of fragmenting a targeted kidney or bladder stone, a first laser pulse train (144) comprising first laser pulses (146) is generated using a first laser source (140A). A second laser pulse train (148) comprising second laser pulses (150) is generated using a second laser source (140B). The first and second laser pulse trains are combined into a combined laser pulse train (152) comprising the first and second laser pulses. The stone is exposed to the combined laser pulse train using a laser probe (108). The stone is fragmented in response to exposing the stone to the combined laser pulse train.
In some embodiments of a method of fragmenting a targeted kidney or bladder stone, an output relating to a characteristic of the targeted stone (120) is generated using a stone analyzer (170). Embodiments of the characteristic include an estimated size of the stone, an estimated length of the stone, an estimated composition of the stone, and a vibration frequency measurement of the stone. Laser energy settings (126) are generated based on the output. Laser energy (104) is generated using a laser generator in accordance with the laser energy settings. The stone is exposed to the laser energy using a laser probe (108
HISTOTRIPSY EXCITATION SEQUENCES OPTIMIZED FOR BUBBLE CLOUD FORMATION USING SHOCK SCATTERING
Methods and devices for producing cavitation in tissue are provided. In one embodiment, a shock scattering method of Histotripsy therapy comprises delivering an initiation pressure waveform from an ultrasound therapy transducer into tissue, the initiation pressure waveform being configured to produce at least one bubble in the tissue, delivering a scattering pressure waveform from the ultrasound therapy transducer into the at least one bubble within a life-cycle of the at least one bubble, and producing cavitation nuclei near the at least one bubble with the scattering pressure waveform. The scattering pressure waveform can be delivered during the life-cycle of the at least one bubble. In some embodiments, the scattering pressure waveform is delivered within 5 ?s to 1 s of the initiation pressure waveform. Systems for performing shock scattering Histotripsy therapy are also discussed.
METHOD FOR CONTROLLING A THERAPEUTIC ULTRASONIC INTERVENTIONAL SYSTEM
A method for controlling a system, comprising repeatedly monitoring at least one operational characteristic of a system that includes an ultrasonic transducer, wherein the ultrasonic transducer is powered by an ultrasonic generator and is configured to drive a device at predetermined levels of vibration amplitude, and wherein the ultrasonic generator includes a controller configured to monitor operational parameters of the system; detecting a change in an operational characteristic based on a comparison of the monitored characteristic against a predetermined threshold for that characteristic; inferring a system-use criteria based on the detected change in the operational characteristic; and adapting system control by using the controller to alter the operational characteristic based on the inferred use criteria.
SYNERGISTIC PULSE GENERATION APPARATUS, DEVICE AND METHOD
Embodiments of the present application provide a cooperative pulse generation apparatus, device and generation method. The synergistic pulse generation apparatus comprises a drive circuit and a pulse generation circuit. The drive circuit receives a first control signal and a second control signal sent by a host computer, converts the first control signal into a first drive signal, and converts the second control signal into a second drive signal. The pulse generation circuit comprises a first power supply, a second power supply, a first pulse generation module, and a second pulse generation module. The first pulse generation module stores electric energy supplied by the first power supply and discharges the electricity under the control of the first drive signal to form a first pulse signal, and the second pulse generation module stores electric energy provided by the second power supply and discharges the electricity under the control of the second drive signal to form a second pulse signal. The present embodiment can selectively form a first pulse signal and/or a second pulse signal having different widths, thereby achieving the purpose of applying a composite pulse to a load.
METHOD FOR CONTROLLING A THERAPEUTIC ULTRASONIC INTERVENTIONAL SYSTEM
A method for controlling a system, comprising repeatedly monitoring a resonant frequency of a system that includes an ultrasonic transducer, wherein the ultrasonic transducer is powered by an ultrasonic generator and is configured to drive a device at a predetermined level of resonant frequency, and wherein the ultrasonic generator includes a controller configured to monitor operational parameters of the system; detecting a change in resonant frequency based on a comparison of the monitored resonant frequency against a predetermined threshold for resonant frequency; inferring a system-use criteria based on the detected change in the resonant frequency; and adapting system control by using the controller to alter the operational parameters of the system based on the inferred use criteria.