152 results about "Intravascular imaging" patented technology

Intraluminal ultrasound imaging devices, methods, and systems are provided. Some embodiments of the present disclosure include intraluminal devices configured to navigate and maneuver tortuous vasculature of a patient. For example, an intravascular imaging device can include a flexible support member at a distal portion of the imaging device. The flexible support member may support a plurality of ultrasound transducers and a plurality of control circuits. The flexible support member includes a flexible joint portion between a transducer portion and a controller portion. Introducing a flexible joint portion between the transducer portion and the controller portion can provide for greater flexibility of the imaging device and enable the device to navigate tortuous regions of a patients anatomy.

Intravascular imaging catheters and methods for making and using intravascular imaging catheters are disclosed. An example intravascular imaging catheter may include an elongate catheter shaft having a distal end region and a proximal region. The distal end region may include a side port. An imaging core may be disposed within the elongate catheter shaft. The imaging core may include an imaging device configured to be slidable within the elongate catheter shaft and through the side port.

Intravascular imaging catheters and methods for making and using intravascular imaging catheters are disclosed. An example intravascular imaging catheter may include an elongate catheter shaft having a distal end region and a proximal region. A guidewire lumen may be defined in the elongate catheter shaft. The distal end region may include an imaging window defined by an open gap in the elongate catheter shaft. An imaging core may be disposed within the elongate catheter shaft. The imaging core may include an imaging device configured to be axially aligned with the imaging window.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a hypotube region, an imaging window region, and a distal end region having a guidewire lumen formed therein. The hypotube region may include a slotted section having a plurality of slots formed therein. The slotted section may include a plurality of discrete zones including a first zone, a second zone disposed proximal of the first zone, a third zone disposed proximal of the second zone, a fourth zone disposed proximal of the third zone, and a fifth zone disposed proximal of the fourth zone. The first zone may have a constant flexural rigidity. One or more of the second zone, the third zone, and the fifth zone may have a flexural rigidity that varies along a length thereof. An imaging core may be within the catheter shaft.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a hypotube region, an imaging window region, and a distal end region having a guidewire lumen formed therein. The hypotube region may include a first portion free of slots and a second portion having a plurality of slots formed therein. At least a reduced diameter section of the second portion of the hypotube region may have an outer diameter that is less than an outer diameter of the first portion of the hypotube region. The imaging window region may be coupled to the reduced diameter section of the second portion of the hypotube region. An imaging core may be disposed within the catheter shaft.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a proximal section and a distal section. The distal section may include a dual lumen region and a distal tip region coupled to the dual lumen region. The distal tip region may include a bumper tip member, a radiopaque member, and a sleeve disposed over and coupling the bumper tip member and the radiopaque member. An imaging core may be disposed within the catheter shaft.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a proximal region, an imaging window region, and a distal end region having a guidewire lumen formed therein. The catheter shaft may include a telescoping assembly having a telescope hub configured to be secured to a pullback assembly. The telescope hub may include a proximal flange, a loading region disposed distal of the proximal flange, and a grip region disposed distal of the loading region. The grip region may have a non-circular cross-sectional shape. An imaging core may be disposed within the catheter shaft.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a proximal section and a distal section. The distal section may include a dual lumen region and a distal tip region coupled to the dual lumen region. A bumper tip member may be disposed along the distal tip region. A marker member may be disposed adjacent to the bumper tip member. The marker member may include an inner layer, a tie layer, and an outer layer including a radiopaque material. A sleeve may be disposed over and couple the bumper tip member and the marker member. An imaging core may be disposed within the catheter shaft.

The invention discloses an optical fiber probe imaging catheter module for an intravascular frequency domain OCT (optical coherence tomography) imaging system, which comprises a transparent protective sleeve and a lining tube arranged in the transparent protective sleeve, a transparent window is arranged at the front end of the transparent protective sleeve, and a single-mode optical fiber, a coreless optical fiber, a GRIN (gradient refractive index) lens and a reflector are sequentially arranged in the lining tube. And a torsion spring tube is arranged outside the single-mode optical fiber. The design of the optical fiber probe and the double-layer catheter is optimized, the imaging resolution is improved, the adaptability of the probe and tissue is enhanced, the optical signal transmission efficiency is improved, high-resolution and low-friction intravascular imaging is provided, and the OCT image quality and reliability are improved.

A system includes a processor circuit that receives intravascular imaging data from an intravascular imaging catheter, an x-ray image from an x-ray imaging device, and intravascular pressure data from an intravascular pressure-sensitive guidewire. The processor circuit correlates the intravascular imaging data and the intravascular pressure data with locations along a body lumen shown in the x-ray image. The processor circuit generates a longitudinal view of the body lumen based on the intravascular imaging data and outputs a screen display including the longitudinal view of the body lumen with an overlaid graphic representation corresponding to the intravascular pressure measurements.

A system for intravascular imaging includes a first flexible elongated instrument including an imaging transducer configured for rotation within the first flexible elongated instrument, and a sensing element including a sensor configured to detect position information encoding of a second flexible elongate instrument. The sensing element is fixedly engaged with the first flexible elongated instrument to place the sensor at a defined distance from the imaging transducer and enable the sensing element to move together with the first flexible elongated element in a body lumen. A rotational drive device includes a coupling element configured to couple to the first flexible elongated instrument and enable the rotational drive device to drive the imaging transducer in rotation. The rotational drive device is configured to receive imaging signals from the imaging transducer and obtain signals from the sensor when the coupling element is coupled to the first flexible elongated element.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a hypotube region, an imaging window region, and a distal end region having a guidewire lumen formed therein. The hypotube region may include a slotted section having a plurality of slots formed therein. The slotted section may include a plurality of discrete zones including a first zone, a second zone disposed proximal of the first zone, a third zone disposed proximal of the second zone, a fourth zone disposed proximal of the third zone, and a fifth zone disposed proximal of the fourth zone. The first zone may have a constant flexural rigidity. One or more of the second zone, the third zone, and the fifth zone may have a flexural rigidity that varies along a length thereof. An imaging core may be within the catheter shaft.

The invention discloses a D-type microcapsule probe suitable for intravascular OCT (optical coherence tomography) imaging. The probe comprises a single-mode optical fiber, a gradient refractive index optical fiber, an inclined-plane coreless optical fiber, refractive index matching glue and a D-type glass cap tube, the graded-index optical fiber is welded at one end of the single-mode optical fiber to serve as a micro-collimation / focusing lens; the bevel coreless optical fiber is welded to the other end of the gradient refractive index optical fiber and serves as a total reflection bevel; the head end of the optical fiber is arranged in the D-shaped glass cap tube, and the optical fiber and the inner wall of the D-shaped glass cap tube are filled with the refractive index matching glue; the outer tube wall of the D-shaped glass cap tube is subjected to flat-angle polishing to form a flat-angle mirror surface, and the reflection inclined plane of the coreless optical fiber is orthographically projected on the flat-angle mirror surface. According to the invention, through matching correction of the D-shaped optical capsule, transverse and radial photoetching resolutions are completely consistent in mechanical OCT spiral scanning 3D imaging, and astigmatism influence on imaging caused by the optical fiber and the cylindrical surface effect of the O-shaped optical capsule can be completely eliminated.

Systems and methods are provided for intravascular imaging. A plurality of intravascular images representing a blood vessel of a patient are acquired and each of a subset of the plurality of images are provided to a convolutional neural network to provide a set of candidate segmentations of either or both of a lumen boundary and a vessel boundary associated with the blood vessel. The set of candidate segmentations are to a regression model to produce contours of the lumen and vessel boundaries.

One or more devices, systems, methods and storage mediums for performing intravascular imaging and / or optical coherence tomography (OCT) while detecting and / or characterizing one or more tissues are provided. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and / or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Preferably, the intravascular imaging devices, systems methods and storage mediums include or involve a method, such as, but not limited to, using one image, such as a carpet view, to detect and / or characterize the one or more tissues and / or to perform coregistration. Examples of identified or detected tissues include calcium, lipids, and other types of tissue.

A system includes a processor circuit that receives intravascular imaging data from an intravascular imaging catheter, an x-ray image from an x-ray imaging device, and intravascular pressure data from an intravascular pressure-sensing guidewire. The processor circuit correlates the intravascular imaging data and the intravascular pressure data to locations along a body lumen shown in the x-ray image. The processor circuit generates a longitudinal view of the body lumen based on the intravascular imaging data and outputs a screen display including the longitudinal view of the body lumen with an overlaid graphical representation corresponding to the intravascular pressure measurements.

The present disclosure provides apparatus and methods to train ML models to infer intravascular images with noisy artifacts removed from intravascular images comprising the noisy artifacts. Further, the disclosure provides a computing system that can be part of an intravascular image capture device configured to infer cleaned images from raw images captured by the intravascular imaging device.

Intravascular imaging devices as well as methods for making and using intravascular imaging devices are disclosed. An intravascular imaging device may include a catheter shaft including a proximal section and a distal section. The distal section may include a dual lumen region and a distal tip region coupled to the dual lumen region. A bumper tip member may be disposed along the distal tip region. A marker member may be disposed adjacent to the bumper tip member. The marker member may include an inner layer, a tie layer, and an outer layer including a radiopaque material. A sleeve may be disposed over and couple the bumper tip member and the marker member. An imaging core may be disposed within the catheter shaft.

An apparatus includes a processor configured for communication with an intravascular imaging catheter and a display. The processor controls the catheter to obtain intravascular images while the catheter is moved through a blood vessel including a lesion. The processor generates, based on the images, a comparison view for planning a stent to provide treatment for the lesion including a first stent option area and a second stent option area displayed simultaneously on the display. The first stent option area includes a visual representation of the blood vessel, a first virtual stent with a first length, intravascular images or metrics associated with the first stent length. The second stent option area includes the visual representation of the blood vessel, a second virtual stent overlaid on the visual representation and comprising a different, second length; and intravascular images or metrics associated with the second stent length.

1. The name of this design product: Catheter driver. 2. Purpose of this design product: To be used in conjunction with an intravascular imaging system cart and an ultrasound diagnostic catheter to drive the catheter for intravascular ultrasound diagnosis. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model belongs to the technical field of interventional catheters, and discloses an interventional intravascular imaging catheter. The interventional intravascular imaging catheter comprises a catheter body, an imaging component and a shaft sleeve, the catheter body comprises a shell and a sheathing canal assembly, the near end of the sheathing canal assembly is connected into the far end of the shell, the imaging component is arranged in the catheter body and can rotate relative to the catheter body and move in the axial direction of the catheter body, and the imaging component comprises an optical fiber plug and an imaging assembly; the optical fiber plug is located in the shell, the near end of the imaging assembly is inserted into the optical fiber plug, the far end of the imaging assembly penetrates through the shell and extends into the far end of the sheathing canal assembly, and the shaft sleeve is fixedly arranged in the shell and arranged outside the imaging assembly in a sleeving mode. According to the interventional intravascular imaging catheter, the shaft sleeve can support the imaging assembly to a certain degree, jumping of the imaging assembly in the whole high-speed rotation withdrawing process is reduced as much as possible, and therefore lens shaking at the far end of the imaging assembly is reduced, and imaging quality is guaranteed.

The invention provides an image processing method and device, electronic equipment and a computer readable medium, and relates to the technical field of intravascular imaging. The method is applied to an intravascular ultrasound system and comprises the following steps: responding to a switching action of a time gain compensation switch, and recording the action time and the gain level of the switching action; acquiring echo data corresponding to the action time; determining target noise data corresponding to the gain level from a preset time gain compensation switching noise table; subtracting the noise data from the echo data to obtain final image data; according to the method and the device, the time of the switching action of the time gain compensation switch and the corresponding gain level are positioned, the noise data are determined in the preset time gain compensation switching noise table, and the noise data are correspondingly subtracted from the echo data, so that the influence of noise is eliminated, and the user experience is improved.

An intravascular imaging system includes an imaging catheter, a first imaging device that is translatable and rotatable within the imaging catheter and a second imaging device that is translatable and rotatable within the imaging catheter. A connector assembly is disposed adjacent to a proximal end region of the imaging catheter and is configured to connect the imaging catheter to a control unit. The connector assembly includes a first pair of electrical connectors for connecting the first imaging device to the control unit and a second pair of electrical connectors for connecting the second imaging device to the control unit. The imaging catheter may further include an optical imaging device and an optical fiber cable that extends between the optical imaging device and the connector assembly.

In an exemplary example, methods and systems are disclosed herein for treating vascular disease by implanting a stent within a vessel and using intravascular imaging to determine and ensure that the stent is properly implanted and produces the desired and effective results. For example, a system can obtain optical shape sensing data and intravascular imaging data of a vessel. The system can process the optical shape sensing data and the intravascular imaging data to generate three-dimensional models and images of the vessel immediately before and after the stent is implanted in the vessel and make an exact comparison of the before and after images to ensure that the stent is properly implanted and will produce or is producing the desired and effective results. The exact comparison can be based on a derived diameter associated with the location of the stent placement in the vessel, which is based on the generated pre- and post- three-dimensional models.

A neural network is trained for estimating patient hemodynamic data using a plurality of extravascular imaging data sets and a plurality of intravascular imaging data sets that are each co-registered to a corresponding extravascular imaging data set. A plurality of hemodynamic data sets are provided, each hemodynamic data set co-registered with the corresponding extravascular imaging data set. The neural network learns what hemodynamic data to expect for a given intravascular imaging data set. An intravascular imaging event is subsequently performed in which an intravascular imaging element is translated within a blood vessel of the patient to produce one or more intravascular images. The neural network uses its training to predict hemodynamic values corresponding to the one or more intravascular images from the intravascular imaging event, and the one or more intravascular images are outputted in combination with the predicted hemodynamic values.

The present disclosure provides a system for localizing the position of an endovascular probe and collecting high-resolution images of the anatomy surrounding the probe. In particular, a switchable endovascular imaging antenna / probe and related devices are disclosed, which are conveniently switchable between a configuration that allows the localization with high precision of the distal tip of an endovascular probe, and another configuration that allows imaging in the locality of the probe tip. Embodiments are also disclosed capable of delivering ablation therapy.

The present invention relates to a multifunctional composite surgical device suitable for removal of calcified cardiovascular tissue. The device comprises a rotational-atherectomy operation handle, wherein a rotational-atherectomy cutter is connected to an outer face of the head of the rotational-atherectomy operation handle by means of a flexible transmission shaft, a micro-force sensor is mounted on a side of the rotational-atherectomy cutter, an intravascular imaging unit is mounted at the tip of the rotational-atherectomy cutter, an ultrasonic vibration unit and a rotational-atherectomy drive unit are mounted inside the rotational-atherectomy operation handle, and the micro-force sensor, the intravascular imaging unit, the ultrasonic vibration unit and the rotational-atherectomy drive unit are each electrically connected to a control module arranged inside the rotational-atherectomy operation handle. During a rotational-atherectomy process, the rotational-atherectomy cutter is controlled to perform a reciprocating motion at a high frequency within a small range, so as to achieve the aims of reducing the degree of interaction between the cutter and calcified tissue and decreasing the probability of the rotational-atherectomy cutter becoming stuck. In combination with intravascular ultrasonic imaging technology, the internal morphology of blood vessels in the vicinity of the cutting tool is imaged before and after rotational atherectomy, thereby providing data support for operators; and in combination with micro-force sensing technology, an impact force of the cutter can be acquired in real time during the rotational-atherectomy process.

An intravascular imaging system includes a catheter with an elongate outer sheath and a torque cable axially translatable and rotatable in the elongate outer sheath, a pullback and rotation unit for axially translating and rotating the torque cable, a sensor configured to provide an output indicative of an axial force exerted by the torque cable on a rotor in the pullback and rotation unit, and a controller configured to cause the pullback and rotation unit to operate in a remedial mode if the output exceeds a predetermined threshold.