Abstract: Apparatuses and methods are provided to predict or diagnose an ischemic event, such as a stroke or a transient ischemic attack (TIA). A machine-learning model such as a neural network is generated that allows for recognition of an ECG consistent with an ischemic event. A system is trained and used to process a recording of ECG data from a patient to generate a prediction indicating a likelihood that the patient will experience a stroke. In other examples, a system is trained and used to process a recording of ECG data from a patient and detect an ischemic event for the patient who did not appear to have such an ischemic event.

Abstract: An example electronic device may include a sensor module, a camera module, a display device, and a processor, wherein the processor can be configured to: execute an application; acquire a user's first biometric information on the basis of the sensor module while the operation relating to the application is performed; estimate a user's health information at least one the basis of the first biometric information, and link the health information with the operation relating to the application so as to display same through the display device.

Abstract: Systems and methods are provided for calibrating computed tomography (CT) system. In one example, a method for a computed tomography (CT) system comprises, during a calibration of the CT system, measuring a position of a detector element of a detector array of the CT system using a wire of a wire phantom coupled to a table of the CT system, during a rotational scan performed using the CT system; and during a subsequent scan performed on a subject using the CT system, applying the measured position of the detector element rather than a design target position of the detector element during reconstruction of an image from projection data acquired via the CT system; and displaying the reconstructed image on a display device of the CT system.

Abstract: A method for acquiring an X-ray image of anatomical features and surgical effectors in a surgical space of a patient includes detecting a particular pose of a particular C-arm used to acquire the X-ray of the surgical space. Characterization parameters of the particular C-arm in the particular pose are determined and incorporated into equations implemented in imaging software that is operable to generate an image of the anatomical features and surgical effectors in the surgical space. When the live X-ray of the surgical space is acquired, the imaging software generates a live image of the anatomical features and surgical effectors as a function of the characterization parameters to account for potential deviations due to the pose of the C-arm. In another feature, a potential error in the imaging process can be visually or automatically detected.

Abstract: Methods and systems are provided for downsampling detector data in a computed tomography imaging system. In an example, a method for a photon counting computed tomography (PCCT) system includes, during a scan of an imaging subject, obtaining detector data from a photon counting detector of the PCCT system, the detector data comprising, for each pixel or detector element of the photon counting detector, photon counts partitioned into a plurality of energy bins based on an energy imparted by each photon on the photon counting detector, applying a bin factor to the plurality of energy bins for each pixel to downsample the plurality of energy bins into a reduced number of energy bins, and reconstructing one or more images from the reduced number of energy bins.

Abstract: The present disclosure relates to a medical device. The medical device comprises a gantry; a first support member rotatably mounted on the gantry around a first rotation axis; and a treatment device including a treatment ray emitter configured to emit treatment rays and a treatment ray receiver configured to receive the treatment rays, the treatment ray emitter and the treatment ray receiver being rotatably mounted on the first support member around a second rotation axis synchronously, wherein the first rotation axis intersects with the second rotation axis.

Abstract: A method is provided for generating a volume model of an object under examination from a data set that includes first 2D projection images created in a first X-ray spectrum and second 2D projection images created in a second X-ray spectrum. The method includes: supplementing the 2D projection images with fill projections and reconstructing a preliminary volume model from the supplemented 2D projection images; determining a spectral X-ray absorption property of at least one volume element and generating virtual 2D projection images from the preliminary volume model as a function of the spectral X-ray absorption property of the at least one volume element; and reconstructing the volume model from the virtual 2D projection images and/or the supplemented 2D projection images and the virtual 2D projection images.

Abstract: A method of displaying multiple bone density performed in a multiple bone density display device when planning an implant procedure includes overlaying a bone density display area including an implant body placement area with a tooth area, displaying a bone density value corresponding to the bone density display area in a first color, and determining whether to display a second color on an edge of the implant body or an edge of the bone density display area displayed in the first color, based on a bone density difference value between an area having a greatest bone density value and an area having a smallest bone density value in the bone density display area. Embodiments have the effect of effective procedure planning by providing bone density information on an implant part when planning an implant procedure.

Abstract: A method for operating an X-ray imaging system includes outputting first X-ray beams onto an X-ray detector by an X-ray source for acquisition of a first X-ray capture of an object under examination. The object under examination is arranged between the X-ray source and the X-ray detector and is passed through by the first X-ray beams. The X-ray detector acquires an entry dose of the first X-ray beams after passage through the object under examination. A parameter value of at least one parameter for output of second X-ray beams by the X-ray source for acquisition of a second X-ray capture of the object under examination is ascertained by a control system. The parameter value is ascertained by the control system according to a specified ascertainment method as a function of a foreground substance of a foreground object, a background substance of a background object, and the entry dose.

Abstract: A method of adjusting components in an imaging apparatus includes obtaining a first image, the first image being acquired by performing a scan using a first set of scan parameters; analyzing the first image to detect objects in the first image and corresponding features of the detected objects; based on a detection result of a first object having a corresponding first object feature in the first image, determining an action corresponding to the first object and the first object feature; determining an updated set of scan parameters based on the determined action; and controlling the imaging apparatus based on the updated set of scan parameters.

Abstract: A heterogeneous patient-based breast phantom that mimics the anatomy and properties of real breast tissues when screened with ionizing and nonionizing imaging modalities is described. The heterogeneous breast phantom includes a skin mimicking segment; an adipose tissue mimicking segment; a fibro-glandular tissue mimicking segment; and a pectoral muscle mimicking segment wherein each segment is shaped and arranged such that the breast phantom represents a breast tissue. Performance of the breast phantom was characterized by mass attenuation coefficient, electron density and effective atomic number. Further, performance of breast phantoms was confirmed CT and breast MRI machines.

Abstract: An apparatus and a method for detection of defective pixels for a photon-counting detector-based computed tomography (CT) system is disclosed. In particular, the apparatus and the method disclosed herein, detect detector pixels that have intermittent behavior using on-the-fly defective pixel screening based on various criteria during an object scan. The defective pixels are discarded using a defective pixel map before image reconstruction.

Abstract: An apparatus, a method, and computer-implemented media. The apparatus is to perform a vessel detection algorithm to detect, in real time during image generation by an ultrasound imaging device, a vessel of a living body, the algorithm including: determining current vessel parameters based on a current ultrasonic image frame on a display at a current time; determining preceding vessel parameters based on a preceding ultrasonic image frame on the display at a time preceding the current time; determining current flow data for vessel fluid flow corresponding to the current ultrasonic image frame; and detecting and tracking the vessel based on the current vessel parameters, the preceding vessel parameters and the current flow data; and determine and cause to display to a user, via a user interface device that includes the display, information regarding a suitability of the vessel for access by a predetermined foreign object.

Abstract: An automated workflow performed by software executing on at least one processor includes receiving a plurality of echocardiogram images of a heart. The plurality of echocardiogram (echo) images are separated according to 2D images and Doppler modality images. The 2D images are classified by view type, including PLAX, A2C, and A4C. The Doppler modality images are classified by region, including CW (Continuous Wave). Regions of interest in the 2D images are segmented images to produce segmented 2D images, including PLAX, A2C, and A4C segmented images. The Doppler modality images are segmented to generate waveform traces to produce segmented Doppler modality images. Both the segmented 2D images and the segmented Doppler modality images are used to calculate measurements of cardiac features of the heart. A grade of MR or TR severity is generated by comparing the calculated measurements to cardiac guidelines. At least one report is output showing the calculated measurements.

Abstract: Medical systems and methods of use thereof useful to image the body are described. The medical system may include a first medical device defining a channel between a proximal end and a distal end of the first medical device; and a second medical device including a tube, a plunger, and a needle. A distal portion of the tube may include an imager, and the needle may be translatable along the tube relative to the plunger. The second medical device may be insertable in, and translatable along, the channel of the first medical device.

Abstract: Provided is a cable hook capable of more appropriately holding a probe cable. A probe cable hook includes: an attachment portion; a hook portion consisting of a flexible material; and a connecting portion that connects the attachment portion and the hook portion, in which the hook portion has a wrapping portion capable of forming a loop for holding a probe cable, the wrapping portion being formed with an engagement hole, and a head portion that is provided on an opposite side of the connecting portion with respect to the wrapping portion and is engageable with the engagement hole, and the loop is maintained by the head portion being engaged with the engagement hole, and the head portion is detached from the engagement hole by the wrapping portion receiving an outward force in a radial direction of the loop.

Abstract: A method for measuring viscoelastic properties of a viscoelastic medium, the method including positioning a probe in contact with the viscoelastic medium, the probe extending along a longitudinal axis and being adapted to carry out transient elastography measurements and including a casing, at least one ultrasound a transducer arranged at a tip of the probe and adapted to generate ultrasounds, a force sensor configured to measure a force applied by the tip of the probe, and a vibrator arranged in the casing and adapted to generate a low-frequency wave, measuring a contact force by the force sensor; generating a measurement ready signal by the probe when the measured contact force is higher than a minimum measurement force threshold, and when the measurement ready signal has been generated, triggering a transient elastography measurement.

Abstract: There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof.

Abstract: The invention relates to a method for measuring an internal pressure (ICP1, ICP2) of a compartment, in particular a muscle compartment, in which an ultrasonic measuring unit coupled to a pressure measuring device is placed on a tissue under which the compartment to be measured is located and a pressure is increased on the tissue by exerting a force. In order to be able to perform a fast and inexpensive, non-invasive measurement of the pressure within a compartment, in particular a muscle lodge (so-called lodge syndrome), it is proposed that the internal pressure (ICP1, ICP2) is determined from a change? p in the pressure p acting on the compartment and a change? E in an extension E(p) of the compartment that occurs during the action of the pressure p.

Abstract: Ultrasound systems and methods of use are provided for rapidly heating a target area of a subject. The ultrasound system can include at least one imaging transducer array for imaging the target area, and at least two spaced-apart heating transducer arrays for heating the target area. The heating transducer arrays can be separated by the imaging transducer array on an ultrasound probe.

Abstract: A method for calculating a diagnostic parameter indicating the stage of a pneumonia, comprising the steps of: (100) acquiring an ultrasound image of the lung, with the pleural line and a portion below it; (200) individuating the region under the pleural line; (300) segmenting said region individuate a set of ultrasound makers (C1, . . . , Cn); (310) individuating at least a region of interest (ROI) as a function of the type, quantity and configuration of the ultrasound markers individuated at step (300); (450) extracting frequency spectra from raw ultrasonic signal corresponding to segments of the ultrasound image contained in each ROI individuated at step (310): (470) comparing each one of said spectra with relative reference spectra calculated for healthy patients and for patients suffering from pneumonia at various stages and calculate a plurality of correlation parameters; (500) calculating a diagnostic parameter as a function of said calculated at point (470).

Abstract: Systems, devices, and methods are provided to provide medical imaging and measurement of features with a lumen of a patient. An intraluminal imaging system may be configured to receive imaging data from an imaging device positioned within the lumen and identify and measure features within the imaging data, such as lesions and stents. The measurements may be used to generate a lesion score and/or an expansion score. The lumen score, expansion score, and associated measurements may be displayed to a user to assist in further imaging procedures or treatment options for the patient.

Abstract: A system and method for acquiring and beamforming ultrasound data using focusing beams includes: providing an ultrasound transducer, the ultrasound transducer including a plurality of elements; transmitting ultrasound beams from the elements in such a way that sound waves arrive at a focal point at different times but within predetermined time differences, the differences being (i) small enough such that the in-sonification at the focal point is strong to overcome noises and attenuation of echo signals caused by tissue absorption, and (ii) large enough to avoid a constructive interference of the sound waves at the focal point; receiving raw RF ultrasound data using at least a subset of the elements for each beam; beamforming the RF ultrasound data to obtain an image; displaying the image or sending the image to a remote device. Ultrasound scanners using focusing beams can achieve excellent image resolution and signal-to-noise ratio, significantly reducing safety concerns.

Abstract: A portable sampler, the sampler including a sampler assembly having a housing that includes a receiver defined therein for interchangeably receiving a number of removable inlet assemblies, the removable inlet assemblies including a respirable inlet assembly and a thoracic inlet assembly. The respirable inlet assembly includes a hybrid cyclone assembly, the hybrid cyclone assembly including an impaction stage and a cyclone in series. The thoracic inlet assembly includes an inlet slot configured to function as a size-selective inlet. Another thoracic inlet assembly includes a housing having a number of openings configured to receive a sample airflow; an inlet insert through which an inlet aperture is defined; a prequalification chamber defined between a lower surface of the housing and an upper surface of the inlet insert; and a protrusion extending downward from the lower surface of the housing into the inlet aperture of the inlet insert to from an inlet slot.

Abstract: A method for a breast biopsy based on indirect magnetic resonance imaging (MRI) guidance of present disclosure, may comprises obtaining a breast MRI data of a patient, generating a deformable breast model using the breast MRI data, measuring real-time breast shape of the patient using a depth sensor, performing a real-time deformable registration using the deformable breast model and the real-time shape data, estimating movements of the MRI targets inside of the breast, performing a breast biopsy for the MRI targets.

Abstract: A medical device comprises an elongate sheath comprising a rigid distal portion and a flexible proximal portion and defining a first lumen. The medical device further comprises an elongate instrument that fits within the lumen. The elongate instrument comprises a flexible proximal section and a rigid distal section. The rigid distal portion of the sheath is at least as long as the rigid distal section of the instrument. In a non-extended condition of the instrument, the distal section of the instrument is entirely within the distal portion of the sheath. In an extended condition of the instrument when the instrument is distally extended within the lumen of the sheath, at least a portion of the distal section of the instrument is outside of the distal portion of the sheath and a portion of the proximal section of the instrument is within the distal portion of the sheath.

Abstract: An embodiment of a tissue engagement device having a sheath, a first arm, a second arm, a first tissue engaging member, a second tissue engaging member, and an actuation cannula. At least a proximal portion of each arm is within the sheath and the tissue engaging members may be positioned on a distal end of each arm. The actuation cannula is also within the sheath, and can move within the sheath between a retracted position and an extended position. The actuation cannula moves at least a portion of each of the first and second arms into a region between an exterior surface of the actuation cannula and an interior surface of the sheath as the actuation cannula moves to the extended position. The engaging members are configured to pierce a desired tissue and anchor to the desired tissue layer when the actuation cannula is in the extended position.

Abstract: A thoracic device including a pair of sternal plates, each sternal plate of the pair of sternal plates including a body having a first end and a second end, a first arm extending from the first end of the body, the first arm having a cavity oriented transverse to the body and an aperture oriented parallel to the body, and a second arm extending from the second end of the body. The thoracic device includes a bar including a third end and a fourth end, the third end having a first channel and the fourth end having a second channel. The third end of the bar is received within the cavity of one of the pair of sternal plates and the fourth end of the bar is received within the cavity of the other one of the pair of sternal plates.

Abstract: Methods of coupling a suspensory fixation construct to a graft, to avoid graft folding while being drawn into a bone tunnel. The suspensory fixation construct may include an adjustable loop construct and a passing construct linked thereto. The method may include forming a running whipstitch along the graft and over a length of the adjustable loop construct such that the running whipstitch holds the adjustable loop construct length along and against the graft surface. The method may include coupling a portion of the passing construct to the adjustable loop construct after the suspensory fixation construct has been attached to the graft.

Abstract: A vessel closure device including a proximal end including a handle with first and second actuators, a distal end including a suturing mechanism, and first and second needles associated with the suturing mechanism. At least one of the first and second needles is coupled to the first actuator. The second actuator is coupled to the suturing mechanism. The suturing mechanism includes a pivotal element capable of being moved by the second actuator between an insertion and removal orientation, a first deployed orientation, and a second deployed orientation. The suturing mechanism is activated within the vessel through an opening in the wall of the vessel and the first and second needles are directed through the vessel wall adjacent to the opening to direct a tensile member adjacent to the opening for closing and sealing the opening.

Abstract: The present disclosure relates generally to apparatus, devices, and methods for increasing force distribution at a suture-tissue interface. In some embodiments, a tissue suturing device may include a deployment device and a plurality of tissue supports deployable from the deployment device towards a target tissue. The plurality of tissue supports may each include a central opening for receiving a suture during deployment.

Abstract: Provided herewith is a needle for delivering dermal filler thread to a wrinkle in a patient. The needle can also be used to deliver the thread to a patient for the purposes of facial contouring. The needle comprises a coupler for attaching the thread to the needle and also a trocar to ease delivery through the skin.

Abstract: A suture suspension system including a flexible backstop extending along a longitudinal axis and having two ends positioned in a first direction in an undeployed configuration. A length of suture can be positioned through the flexible backstop and forms a bridge connecting and creating suspension between a first body to a second body. In a deployed configuration, the two ends of the flexible backstop are positioned in a second direction different from the first direction. The system may also include an anchoring body having the length of suture woven therethrough. A portion of the anchoring body is positioned on a distal surface of a second body and a portion of the flexible backstop is positioned on a proximal surface of the first body.

Abstract: A surgical staple includes multiple arms extending from a transverse connection area, each of the arms having tissue-gripping teeth and a resistance area of increased width located between the transverse connection area and the gripping area. In another aspect, a surgical staple includes two arms connected by an arcuate folding joint, with a deformation area located between the folding joint and a laterally enlarged resistance area, and with laterally projecting teeth longitudinally located outboard of the resistance area on each of the arms.

Abstract: This disclosure details a surgical device configured to deliver multiple implants or tools, including corresponding techniques, assemblies, systems, and methods, for using the surgical device. A surgical device according to an exemplary aspect of the present disclosure includes, among other things, a main handle, a main shaft, an inserter partially within the main shaft, and an implant adjacent a distal end of the inserter. The surgical device is configured such that the implant is moveable from a retracted position within the main shaft to an intermediate position within the main shaft by distal movement of the inserter relative to the main handle. Further, the surgical device is configured such that the implant is moveable from the intermediate position to a deployed position distal of the main shaft by relative movement of the main shaft and the main handle.

Abstract: A surgical stapling device includes a drive assembly and a tool assembly having an anvil and a cartridge assembly that is pivotably coupled to the anvil for movement between an open position and a clamped position. The cartridge assembly includes a staple cartridge and a channel member that defines a cavity that receives the staple cartridge. The channel member includes a channel lock that is positioned on a proximal portion of the channel member. The drive assembly is movable between a drive advanced position and a drive retracted position and engages the channel lock in the drive retracted position to retain the tool assembly in the open position.

Abstract: While the described biocompatible wound dressing can include any suitable component, in some cases, it includes a biocompatible interface and multiple fixation elements that are each configured to at least one of absorb and incorporate into a user's body after prolonged use in the user's body. In some cases, the interface has a first surface and a second surface that is disposed substantially opposite to the first surface, with a peripheral edge that extends around an outer perimeter of the biocompatible interface. In some cases, the fixation elements extend from the first surface of the interface, adjacent to the peripheral edge. In some cases, the fixation elements also have a hook-like shape that is configured to couple the interface to subcutaneous tissue on an undersurface of skin when the peripheral edge and the fixation elements are inserted below the subcutaneous tissue. Additional implementations are described herein.

Abstract: An apparatus includes a body, a shaft, a stapling assembly, and a sequential logic device. The body includes a safety switch, a firing actuator, and a motor. The stapling assembly is disposed at a distal end of the shaft, wherein the stapling assembly is configured to selectively move from an open position to a closed position to clamp tissue. The sequential logic device is operatively coupled with the motor and configured to detect an actuation of the safety switch and of the firing actuator. The sequential logic device is further operable to detect an order in which the safety switch and the firing actuator are actuated, compare the detected order to a predetermined order, and in response to determining that the detected order is equivalent to the predetermined order, transmit a motor activation signal to the motor.

Abstract: An apparatus for treating an aneurysm in a blood vessel includes an occlusion element including a first tubular mesh having a first end and a second end coupled together at a proximal end of the occlusion element such that an intermediate portion of the first tubular mesh between the first end and the second end includes a substantially 180 degree turn, the intermediate portion of the first tubular mesh extending distally from the proximal end of the occlusion element, wherein the intermediate portion of the first tubular mesh has a collapsed configuration and is configured to expand to an expanded. In some embodiments, the apparatus further includes a second tubular mesh having a first end and a second end coupled to the proximal end of the occlusion element such that an intermediate portion of the second tubular mesh between the first end and the second end includes a substantially 180 degree turn.

Abstract: Apparatus is provided for treating a vascular malformation, including an orifice section, an occlusion section, and a connecting section. When the apparatus is unconstrained, the orifice and occlusion sections are shaped so as to define orifice-section and occlusion-section curves that wind around non-coaxial orifice-section and occlusion-section central axes, respectively, at changing distances from the axes. The orifice-section curve defines an orifice-section central opening. A projection of the occlusion-section curve occludes at least 25% of a orifice-section-central-opening cross-sectional area of an orifice-section central opening; the projection of the occlusion-section curve is in a direction along the orifice-section central axis, onto an orifice-section plane perpendicular to the orifice-section central axis. Other embodiments are also described.

Abstract: A vaso-occlusive coil formed of a wire having a primary configuration in a constrained condition. The coil assumes a secondary configuration in a relaxed, unconstrained condition. The secondary configuration comprises a primary portion comprising a plurality of primary loops, including a distal-most primary loop. A distal anchoring loop is connected to the distal end of the distal-most primary loop. The distal anchoring loop has a substantially triangular shape and is much smaller than the distal-most primary loop. The distal anchoring loop prevents herniation of the device during deployment and retention within an anatomical cavity.

Abstract: A system and method for vasculature closure from a single access point are provided, utilizing specifically designed bioresorbable devices. The bioresorbable devices may include a disk-shaped substrate layer with an opening extending from a first surface to a second surface, configured to allow a guidewire to pass through, and a coating configured to encourage adhesion to an interior vessel wall. The system utilizes a guidewire having an expandable portion passing through the opening. The bioresorbable device is carried into the blood vessel within a first tubular member in a compressed configuration, and then ejected from the first tubular member by a second tubular member. The bioresorbable member then assumes a partially expand configuration. The expandable portion of the guidewire can then be used to press the bioresorbable device against an interior vessel wall, allowing it to adhere, after which the expandable portion can be deflated.

Abstract: The present disclosure provides surgical clamps. The clamp has a body with a mouth that opens and closes to permit the body to encircle a bundle of tissue containing a blood vessel which a surgeon wishes to occlude. The clamp also has an articulating arm that rotates on a hinge and passes through apertures of the clamp body. The apertures and/or the articulating arm include ratchet components that permit the surgeon to apply dynamic adjustable tensioning to the tissue and vessel in real time. This dynamic tension permits a surgeon to ensure a specific reduction of blood flow through the vessel.

Abstract: A windlass tourniquet that facilitates the application of circumferential pressure and that compensates for natural pressure creep that occurs within minutes of tourniquet application

Abstract: An ergonomic drill guide device with increased visibility is provided. The drill guide device has a handle with a top and bottom. The handle includes a rod and a hand grip. The rod has an outer dimension R. The hand grip at least partially surrounds the rod and has an end portion. The hand grip has an outer dimension H at an end. The drill guide has an outer dimension D. There is a gap G between the end of the end portion and the drill guide. The ratio of R to D is between 0.2 to 1.0.

Abstract: Systems and methods for removing clots via aspiration are disclosed herein. A catheter includes an elongate body defining a lumen. The distal region includes a distal openings region, a proximal openings region and a thrombus interface region between the distal and the proximal openings regions. The distal and proximal openings regions each includes one or more openings in fluid communication with the lumen. In use, the catheter is positioned from a proximal side of the clot so that the distal openings region positioned at least partially distal of the clot and the proximal openings region positioned at least partially proximal of the clot. An aspiration catheter is positioned with its distal end at the proximal end of the clot. The clot is then withdrawn in the proximal direction with a combination of aspiration applied to one or more of the catheter or the aspiration catheter.

Abstract: A method for removing a stone from a patient comprising the steps of: providing a suction evacuation assembly which includes a sheath and one or more side arms; inserting and positioning a distal end of the sheath into a lumen or cavity of a patient's body containing a stones; connecting a tube to one of the side arms and to a collection bottle; connecting another tube to the collection bottle and a negative pressure system; visualizing the stone or foreign body using a scope inserted through the assembly; activating the negative pressure system in order to remove the stone from the cavity if the diameter of the stone is narrower than an inside diameter of the sheath and the side arm, or performing a lithotripsy on the stone to create fragments with a decreased diameter which allow the passage through the assembly; and collecting the stone in the collection bottle.

Abstract: Devices for removing occlusive material from blood lumens and similar physiological structures are provided and generally include a progressive cavity pump. The progressive cavity pump may be integrated into a handle assembly or a distal end of a catheter and may be drive by a motor activated by a controller. In certain implementations, the controller may be configured to activate the motor to generate a pulsatile vacuum using the progressive cavity pump. To facilitate activation of the motor by the controller, the device may further include a pressure sensor configured to measure pressure distal the progressive cavity pump.

Abstract: A catheter assembly includes an outer sheath and a hypotube ultrasonic transmission member. The outer sheath has a first end, a second end, a frustoconical side wall portion located proximal to the second end, and a sheath lumen extending from the first end to the second end. The hypotube ultrasonic transmission member is disposed in the sheath lumen. The hypotube ultrasonic transmission member has a hypotube side wall, a proximal hypotube portion, a distal hypotube portion, and a tapered intermediate portion. The proximal hypotube portion is configured to be operatively coupled to an ultrasonic transducer. The proximal hypotube portion has a first diameter, and the distal hypotube portion has a second diameter that is less than the first diameter. The tapered intermediate portion is configured to transition from the first diameter to the second diameter. The tapered intermediate portion is located proximate the frustoconical side wall portion.

Abstract: A current peak value measurement apparatus (100), a high voltage generator (200), and a therapeutic device for vascular calcification. The current peak value measurement apparatus (100) includes a PCB Rogowski coil (10), a sampling resistor (11), a signal amplification circuit (12), an integration and voltage retaining circuit (13) and a micro-controller (14), wherein the PCB Rogowski coil (10) is used for sensing a current signal in a circuit to be detected, and for obtaining a corresponding induced electromotive force; the micro-controller (14) is used for performing ADC sampling on the maximum value of a voltage signal, and for obtaining a current peak value of the current signal in the circuit to be according to ADC sampling data and preset current rating data. The apparatus has the advantages of a high safety, a fast response speed, a stable process, a high consistency and a low cost.