摘要:
In cardiac ablation for treatment of atrial fibrillation where lesions have to be made to the heart wall, an ultrasound monitoring mechanism is adapted to assess the progress of the lesion, so that a surgeon can provide lesions with adequate depth, wherein interference caused by an ablation device is reduced and signal to noise ratio of echo signals is improved.
摘要:
A monitoring apparatus for monitoring an ablation procedure applied to an object comprises an ultrasound signal providing unit for providing an ultrasound signal. The ultrasound signal is produced by sending ultrasound pulses out to the object, by subsequently receiving dynamic echo series after the ultrasound pulses have been reflected by the object, and finally by generating the ultrasound signal depending on the received dynamic echo series, whereby ultrasound scattering properties of the object are determined that represent blood perfusion. The monitoring apparatus further comprises an ablation depth determination unit for determining an ablation depth from the provided ultrasound signal.
摘要:
The present invention relates to a device comprising a supply unit (2) for supplying ablation energy to a material (4), and a stimuli-responsive substance (3′) for controlling a level of the ablation energy deposited into the material (4). The device allows to limit a temperature of the material (4), so that risks associated to ablation at too high temperatures can be eliminated. The device may comprise at least one illumination unit (7) for illuminating the material (4), and at least one reception unit (8a, 8b) for receiving reflected light in order to obtain information about a state of the material (4). The obtained information can be used to regulate the supplied ablation energy.
摘要:
An apparatus for applying energy to an object and/or sensing the object. The apparatus includes an optical device for applying and/or sensing light energy and an electrical device for applying and/or sensing electrical energy. At least one optical fiber is provided for applying light energy to the object and/or sensing the object. The at least one optical fiber is connected to the optical device and includes a conductive coating forming an electrical conductor for applying electrical energy to the object and/or sensing the object. The electrical conductor is connected to the electrical device.
摘要:
The present invention relates to an optical probe (1) suitable for miniature applications. An example application is a fibre-based confocal miniaturized microscope. The optical probe comprises a coil-based actuation system (9, 10) comprising drive coils (9) capable of displacing the distal end (3) of an optical guide (2) housed (4) by the optical probe. The probe makes use of a feedback loop which alternate between driving the displacement of the optical guide by driving a current through the drive coils and switching off the current through the drive coils, and while the drive current being switched off, measure the speed of the distal end of the optical guide. The measured speed is compared to the set-point speed, and if a difference is detected, the drive current is adjusted to eliminate, or at least bring down, this difference.
摘要:
The present invention relates to an apparatus for applying energy to an object (2), wherein the apparatus comprises at least one combination element (36) for combining multiple energy applying elements (37) for applying energy to the object, wherein the combination element comprises an axis (60), around which the energy applying elements (37) are wound, wherein the energy applying elements (37) comprise energy emission locations arranged along a line.
摘要:
The present invention relates to an apparatus (1) for applying energy to an object (2), wherein the apparatus (1) comprises an energy emitting element, a temperature sensor and a tube (6), in which the energy emitting element and the temperature sensor are locatable. The energy emitting elements is adapting for applying energy to the object (2) and the temperature sensor is adapted for sensing the temperature of the object (2). Both, the energy emitting element and the temperature sensor can be guided to a location of the object (2), at which the energy is to be applied.
摘要:
The present invention relates to a device comprising a supply unit (2) for supplying ablation energy to a material (4), and a stimuli-responsive substance (3′) for controlling a level of the ablation energy deposited into the material (4). The device allows to limit a temperature of the material (4), so that risks associated to ablation at too high temperatures can be eliminated. The device may comprise at least one illumination unit (7) for illuminating the material (4), and at least one reception unit (8a, 8b) for receiving reflected light in order to obtain information about a state of the material (4). The obtained information can be used to regulate the supplied ablation energy.
摘要:
The invention relates to a sensing apparatus for sensing an object. The sensing apparatus comprises an ultrasound unit (11) for ultrasonically sensing the object (4), an electrical energy application unit (9) for applying electrical energy to the object (4), and an ultrasound unit shielding element (16) for electrically shielding the ultrasound unit (11), wherein the ultrasound unit shielding element (16) is electrically connected to the electrical energy application unit (9). Since the ultrasound unit shielding element electrically shields the ultrasound unit, the ultrasound sensing of the object is less influenced by a capacitive coupling of the application of electrical energy, in particular, of an RF signal which may be used for applying the electrical energy, into the ultrasound sensing. A further reduction of this influence is achieved by electrically connecting the ultrasound unit shielding element to the electrical energy application unit.
摘要:
The present invention relates to an apparatus (1) for applying energy to an object (2), wherein the apparatus (1) comprises an energy emitting element, a temperature sensor and a tube (6), in which the energy emitting element and the temperature sensor are locatable. The energy emitting elements is adapting for applying energy to the object (2) and the temperature sensor is adapted for sensing the temperature of the object (2). Both, the energy emitting element and the temperature sensor can be guided to a location of the object (2), at which the energy is to be applied.