A medical device may include a handle assembly having an actuator and a sheath. The sheath may extend between a proximal end and a distal end. The proximal end of the sheath may be coupled with the actuator. The medical device may further include an end-effector moveable relative to the sheath between an extended configuration and a retracted configuration. The end-effector may include a plurality of expandable legs. Each of the plurality of expandable legs may include a plurality of first indicia and a plurality of second indicia. A color of each of the first plurality of indicia may be different than a color of each of the second plurality of indicia.

Offset illumination using multiple emitters in a fluorescence imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The emitter comprises a first emitter and a second emitter for emitting different wavelengths of electromagnetic radiation. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern.

Devices, systems, and methods for the localization of body lumen junctions and other intraluminal structure are disclosed. Various embodiments permit clinicians to identify and locate lesions and/or anatomical structures within a lumen and accurately place leads and/or devices within a lumen, through determining the intralumen conductance and/or cross-sectional area at a plurality of locations within the body lumen.

A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.

An electronic system for a surgical instrument is disclosed. The electronic system comprises a main power supply circuit configured to supply electrical power to a primary circuit. A supplementary power supply circuit configured to supply electrical power to a secondary circuit. A short circuit protection circuit coupled between the main power supply circuit and the supplementary power supply circuit. The supplementary power supply circuit is configured to isolate itself from the main power supply circuit when the supplementary power supply circuit detects a short circuit condition at the secondary circuit. The supplementary power supply circuit is configured to rejoin the main power supply circuit and supply power to the secondary circuit, when the short circuit condition is remedied.

An exemplary system is configured to obtain anatomical characteristic data representative of a characteristic associated with an anatomical surface to be covered by a physical medical element, the anatomical surface within an internal space of a patient and determine, based on the anatomical characteristic data, a placement guidance parameter set. The placement guidance parameter set may include one or more parameters configured to guide a placement of the physical medical element on the anatomical surface with one or more surgical instruments controlled by a computer-assisted surgical system.

In some embodiments, a plurality of transducers of a transducer-based device may be selected for activation. A first pair of subsets of the selected transducers may be identified for initial activation, each subset of the first pair being activated with a different phase angle range than the other. No transducer in one subset is sufficiently close to a transducer in the other subset to cause a confluence of ablated tissue regions therebetween. The first pair of subsets may be activated simultaneously or concurrently. Upon activation or a conclusion thereof of the pair of subsets of the selected transducers, one or more subsequent pairs of subsets of the selected transducers may be activated iteratively on a pair-by-pair basis, until all of the selected transducers have achieved desired activation results, according to some embodiments. Each subsequent pair may include the same or similar characteristics as the first pair.

A measurement device and method that allows for precise placement, as well as more accurate measurement of various body parts, including vessels, lesions, and/or lumens of vessels of various body parts. The measurement device comprises one or more measurement tapes having (i) a plurality of measurement marks for measuring a distance and/or a length of a vessel and (ii) a plurality of circular indicators for measuring a diameter of a lumen of the vessel.

A surgical system used to determine a size of a vessel within a region proximate to a working end of a surgical instrument includes at least one light emitter disposed at the working end, an array of light sensors disposed opposite the at least one light emitter, the array comprising a least one row of light sensors, individual light sensors in the row adapted to generate a signal comprising a pulsatile and a non-pulsatile component, and a controller coupled to the array, the controller comprising a splitter to separate the pulsatile component from the non-pulsatile component, and an analyzer to determine the magnitudes of the pulsatile and non-pulsatile components at the individual light sensors, to determine a first peak magnitude and a second peak magnitude of the pulsatile components, and to determine a resting outer diameter of the vessel based on the first and second peak magnitudes.

A measurement support device including a head configured to emit measurement auxiliary light, an imaging unit to capture an image of a subject on which a spot is formed by the measurement auxiliary light via an imaging optical system, a measurement unit to measure a position of the spot in the image, and a display control unit to display an indicator figure, and information indicating a trajectory along which the spot moves on the image when an imaging distance of the image is changed, wherein, in a case where an optical axis of the measurement auxiliary light is projected on a plane including an optical axis of the imaging optical system, the head emits the measurement auxiliary light that has an inclination angle, which is not 0 degrees with respect to the optical axis of the imaging optical system, and crosses an angle of view of the imaging optical system.