摘要:
Die Erfindung betrifft ein invasives Instrument zur Bearbeitung eines Gefäßes, das ggf. Nebengefäße aufweist, mit einer zur Dissektion von Gewebe ausgebildeten Spitze (10) am distalen Ende eines in den Körper einzuführenden Schaftes (2) dadurch gekennzeichnet, dass die Spitze (10) mindestens eine Ausnehmung (17), insbesondere eine Gefäßaufnahme (17) aufweist, die so angeordnet und ausgebildet ist, dass im Betriebszustand des Instruments (1) stets mindestens eine Funktionseinheit (4, 5, 6, 7, 8, 9, 20) des Schaftes (2) freigelassen ist, so dass Arbeiten am Gefäß (14), einem Nebengefäß (40) und / oder am umliegenden Gewebe mit oder durch die Funktionseinheit (4, 5, 6, 7, 8, 9, 20) möglich sind.
摘要:
The invention relates to an endoscope (1) having two entry lenses (9, 9a), which are arranged spaced from each other and the fields of view of which overlap, and having guiding devices. The entry lenses (9, 9a) are spaced so far apart from each other that the outer edges thereof protrude beyond the cross-sectional area of the guiding devices, and a lens (8, 8a) displacing the axis beam is inserted between one entry lens and the guiding devices. The invention also relates to a method for the use of the endoscope.
摘要:
Presented herein are methods, systems, devices, and computer-readable media for dual-tube stereoscopes. Embodiments may include an elongated body comprising a proximal end and a distal end, the proximal end having at least one proximal opening, the distal end having first and second distal openings; a first waveguide coupled to the first distal opening; and a second waveguide coupled to the second distal opening. There may also be optics situated near the proximal end of the elongated body and configured to receive light from the first and second waveguides and to transmit the received light through the at least one proximal opening onto a single light-receiving device. Some embodiments include processing a single received digital image, comprising two sub- images, to produce two images viewable stereoscopically, for example.
摘要:
An elongated optical guidewire assembly, such as for optically imaging a patient from within another catheter, can have a lead portion and a probe portion. A connector between the lead and probe portions can include a bore including first and second bore ends. The first bore end can include a substantially circular cross-sectional profile. The second bore end can include a substantially non-circular cross-sectional profile. The bore can be configured to receive the optical guidewire assembly at the first bore end and configured to deform the optical guidewire assembly at the second bore end such that probe and lead ends of the optical guidewire assembly are deformed into a substantially non-circular profile and located between the first and second bore ends.
摘要:
This invention relates to an optical probe (200) and an optical imaging system, including an optical guide (201) having a proximal end and a distal end, an actuation means having driving coils (204) and a magnet, with of which being attached to the optical guide. By supplying a driving current through the driving coils a magnetic flux is generated which interacts with the magnet forming a driving force acting at on the optical guide causing a displacement of the distal end of the optical guide. A position measuring including a position measuring coil (205) is used for monitoring the position of the optical guide, where the internal arrangement of the position measuring coil and the driving coils is such that said displacement of the distal end of the optical guide causes a change in the internal arrangement. A power supply supplies an additional high frequency alternating current (AC) through the driving coils which causes an induced voltage in the position measuring coil and thus generates a magnetic coupling between the position measuring coil and the driving coils. A position measuring means measures the displacement of the distal end of the optical guide by means of measuring the induced voltage resulting in when the internal arrangement changes. This induced voltage change being indicative for the position of the distal end.
摘要:
An angioscope comprises a tubular sheath and a central member. The central member carries a lateral reflector for receiving images circumscribing the central member. The tubular sheath includes a light source for axially illuminating a vascular region as it is being optically imaged using the lateral reflector of the central member. The central member can be axially translated through the field illuminated by the light source on the tubular sheath. The angioscope may be combined in a catheter a catheter capable of delivering a therapeutic intervention while viewing a delivery site within a body passageway.
摘要:
A Glottiscope for assisting with the insertion of an endotracheal tube or an Eschman like stylet into a patient is claimed. The Glottiscope comprises a blade which defines an internal passage for receiving an endotracheal tube or an Eschman like stylet, the blade having a proximal end and a distal end and means for viewing the patient's glottis, wherein the viewing means is disposed at the distal end and in use, below the point of emergence of an endotracheal tube or a stylet/guide (to rail road the endotracheal tube) in the internal passage to provide a view of the patient's glottis, the blade being adapted to direct the viewing means towards the centre of the patient's glottis.
摘要:
A digital imaging endoscope with an elongated shaft has a core member for imparting flexibility and column strength to the shaft. The shaft extends distally from a proximal handle, and at least part of the shaft, or the entire shaft, comprises an inner member, the core member, and an outer member. The inner member defines at least three lumens. A first lumen is for receiving an instrument, a second lumen is for receiving one or more wires for connecting a digital imaging device at a distal portion of the shaft to a display unit, and a third lumen is for receiving the core member. The core member can occupy the space within the shaft that was traditionally occupied by a fiber optic bundle in non-digital imaging endoscopes. The outer member is disposed over the inner member of the shaft, and the outer member defines a lumen through which the inner member extends.
摘要:
A catheter for use in a patient's body lumen, having a shaft section configured to minimize ultrasonic image artifacts and the direct ultrasonic image brightness of the shaft surface and its internal components, and to produce its image at a wide range of imaging angles, preferably with an intensity not substantially different than surrounding tissue of the body lumen under ultrasound visualization. The shaft section is operative for the desired use of the catheter, yet is also configured to facilitate accurately imaging the shape and location of the shaft section, and easily differentiate it from the surrounding anatomy without unduly obscuring the images of the adjacent anatomy using an ultrasound imaging system.