21 results about "Endovascular surgery" patented technology

Systems and techniques are disclosed for improving real-time tissue characterizations during endovascular procedures. In some implementations, a method involves characterizing biological tissue for an endoluminal procedure. A first electrode is positioned within an endoluminal space adjacent to a region of biological tissue. A second electrode is positioned spatially separated from the first electrode. A variable-frequency input electrical signal is applied across the first electrode and the second electrode to generate an electrical field corresponding to the region. A voltage response is measured between the first electrode and the second electrode based on the electric field. A voltage phasor is determined based on the voltage response relative to the variable-frequency input electrical signal. A characteristic of the region is determined based on the voltage phasor.

The invention provides devices, systems and methods for tissue approximation and repair at treatment sites. The devices, systems and methods of the invention will find use in a variety of therapeutic procedures, including endovascular, minimally-invasive, and open surgical procedures, and can be used in various anatomical regions, including the abdomen, thorax, cardiovascular system, heart, intestinal tract, stomach, urinary tract, bladder, lung, and other organs, vessels, and tissues. The invention is particularly useful in those procedures requiring minimally-invasive or endovascular access to remote tissue locations, where the instruments utilized must negotiate long, narrow, and tortuous pathways to the treatment site. In addition, many of the devices and systems of the invention are adapted to be reversible and removable from the patient at any point without interference with or trauma to internal tissues.

Procedures may be performed on the heart after the installation of a mitral valve fixation device. In order to prepare the heart for such procedures, the fixation device may be removed or disabled in minimally invasive ways (e.g., through an endovascular procedure), without requiring open access to the heart. The fixation device may be partitioned so that one portion may remain attached to each leaflet of the mitral valve. In another example, the leaflets may be cut along the edges of the distal element(s) of the fixation device, so as to cut the fixation device from the leaflet(s). Systems and devices for performing such procedures endovascularly are disclosed. Fixation devices with improved access to a release harness are also disclosed.

A hemostasis valve for use with catheters in intravascular procedures. The hemostasis valve comprising a sealable fluid channel that bifurcates from a single distal lumen to two proximal lumens. An upper proximal lumen may include a funnel shaped opening to improve aspiration potential. Rotating locking mechanisms are attachable at the ends of the hemostasis valve to interlock coaxial devices or to form seals around coaxial devices. Injection molding may be used to manufacture a hemostasis valve and its components. A mold and core pins may impart external and internal shapes to a molten polymer. Once the polymer has cooled, the molded component is separated from any pins or molds and attached to other molded components to form an assembled hemostasis valve.

A tray used during endovascular surgery includes an upper tray and a lower tray. The upper and lower trays are removably attachable from one another and each includes a first forward side, a second rear side, a third lateral side and a fourth lateral side. The upper tray includes a saline reservoir and the lower tray includes a wire cavity, a wire path and a sponge. The wire path connects the wire cavity with one or more apertures in the first side of the lower tray and the sponge is located within the wire path such that wires can be inserted into any of the one or more apertures, pass through the sponge, along the wire path and into the wire cavity where the wires will coil.

This application provides a method and related apparatus for detecting protrusions of key anatomical structures in endoscopic surgery based on temporal multi-hypothesis fusion. The method includes: S1. acquiring intraoperative video clips and instrument movement logs; S2. generating candidate protrusion regions for each frame; S3. performing temporal matching and voting fusion on the frame-by-frame candidates to obtain temporally stable candidate protrusions; S4. performing multi-hypothesis anatomical semantic generation on the temporally stable candidate protrusions to obtain a set of candidate anatomical categories; S5. performing size-morphology-color three-dimensional evidence fusion on the candidate anatomical category set to obtain the final anatomical category; S6. performing multi-dimensional risk scoring based on the final anatomical category, location coordinates, instrument tip coordinates, and instrument movement type, outputting graded risk warnings and differentiated avoidance suggestions. This application also provides related apparatus corresponding to the method, including devices, electronic devices, computer-readable storage media, and computer program products.

Devices are provided for performing endovascular surgical procedures. In one example, the device includes a magnetically actuated untethered rotation device, i.e., a magnetic spinner, that can navigate in blood vessels through its spinning-enabled propulsion. The magnetic spinner is capable of providing suction, shear force, carrying load for functions including navigation in multi-branched blood vessels, e.g., for targeted drug delivery, treating brain aneurysm, mechanical thrombectomy, rotablation for plaque removal, and the like.

When conducting technical training and evaluation for endovascular surgery, the behavior of the catheter, particularly the movement of the wire inside the catheter sheath, can be observed more clearly without the use of X-rays. [Solution] An apparatus for observing a vascular model into which a catheter has been inserted, wherein the light-emitting unit comprises a light source and a polarizing element and irradiates a reference irradiation light containing a first polarization toward the object to be observed, the polarizing element has a polarization axis in a first direction and transmits the first polarization that is circularly polarized in the first direction from the light output from the light source, the first polarization is transmitted through the catheter sheath and at least a part of its light component has its polarization state modulated, the light-receiving unit comprises a photodetector and an analyzer, the analyzer has a polarization axis that constitutes circular polarization in a second direction different from the first direction, the photodetector receives the light component of circular polarization in the second direction that has passed through the analyzer from the reference irradiation light that has been irradiated toward the object to be observed and interfered with by the object to be observed, and generates an observation output, the image generation unit receives the observation output and generates an image, and the display displays the image.

A distal entry point (DEP) to brain aspiration (D2BA) catheter for use in an endovascular procedure for gaining access to cervical and cerebral arteries in a brain of a patient and aspirating one or more intracranial clots from the cerebral arteries, comprising a soft distal tip region having a distal length sufficient to extend from a level 1 or level 2 arterial segment of a cerebral artery or equivalent to an upper neck arterial vessel, a stiffness enabling movement through the level 1 or level 2 arterial segment of the cerebral artery, and an outside diameter (OD) of 6F-10F, a proximal region having a stiffness greater than the stiffness of the soft distal tip region, the proximal region having a length sufficient to extend to outside the patient through the DEP.

A human control unit for manipulating an apparatus for an endovascular procedure, the human control unit comprising: a housing; a control unit comprising a transceiver; a moveable member couplable to the housing and moveable by a user of the human control unit; and a haptic feedback unit communicatively couplable to the control unit and couplable to the moveable member; wherein, upon a movement of the moveable member, the transceiver is configured to provide a signal to the apparatus for altering a parameter of the apparatus, and wherein the haptic feedback unit is configured to provide haptic feedback via the moveable member to the user of the human control unit.

A sterile surgical drape includes left and right inflatable supports leveling the upper surface of the drape to better corral instruments during angiographic procedures. An optional center inflatable support helps center the drape and provides a continuation of this work surface. Multiple sealable openings can be provided at common groin and wrist locations.

Embodiments of the present disclosure relate to simulation of blood vessels to visualize and quantify forces applied to the blood vessels during procedures using a system that allows visualization of endovascular procedures. An example blood vessel simulator of the present disclosure may include a vascular model system including: a base; an attachment point; a tube attached to the attachment point; a sensor, where the attachment point is attached to the sensor, the sensor is mounted to the base, and the sensor is configured to detect a force exerted on the tube from a guide wire traveling within the tube; a camera, wherein the camera is positioned to capture real time images of the base, the attachment point, and the tube; and a controller configured to generate a visual output of the real time images with an indication of the force exerted on the tube from the guide wire.

There was a request to observe the behavior of the catheter, particularly the movement of the wire inside the catheter sheath, more clearly without using X-rays, when conducting technical training and evaluation of endovascular surgery. [Solution] This invention relates to an observation device for observing a vascular model in which a catheter has been inserted, without using X-rays, and includes a light receiving unit for post-irradiation light, the post-irradiation light being a reference irradiation light that has been irradiated onto the observation target and interfered with by the observation target, wherein the light receiving unit is positioned at a second position mainly capable of receiving post-irradiation light formed when the reference irradiation light is reflected by the observation target, and / or at a third position mainly capable of receiving secondary light generated when the reference irradiation light interferes with the observation target.

The present disclosure relates to vascular models, uses thereof and methods for simulating vascular surgery techniques, particularly endovascular surgery techniques.

The invention provides devices, systems and methods for tissue approximation and repair at treatment sites. The devices, systems and methods of the invention will find use in a variety of therapeutic procedures, including endovascular, minimally-invasive, and open surgical procedures, and can be used in various anatomical regions, including the abdomen, thorax, cardiovascular system, heart, intestinal tract, stomach, urinary tract, bladder, lung, and other organs, vessels, and tissues. The invention is particularly useful in those procedures requiring minimally-invasive or endovascular access to remote tissue locations, where the instruments utilized must negotiate long, narrow, and tortuous pathways to the treatment site. In addition, many of the devices and systems of the invention are adapted to be reversible and removable from the patient at any point without interference with or trauma to internal tissues.

A robotic system for endovascular procedures is disclosed, comprising an inclined rail (2) towards the patient, to which multiple modular robotic actuators (RA) are suspended in a Master–Slave configuration and mounted on carriages (S1, S2, S3, S4...). Each RA is reusable, while dedicated disposable modules are attachable to the actuators to directly engage commercially available catheters and guidewires of different diameters and types, including guidewires with steerable cores, fixed hemostatic valves, and, in future applications, actively steerable catheters with one or two degrees of freedom and rotating hemostatic valves. S1 is an RA2 configured for catheter advancement and rotation; S2 is an RA4, RA5 or RA6 configured to hold and rotate a hemostatic valve, advance the catheter at the same speed as S1, and drive a steerable guidewire; S3 is a configurable RA for additional guidewires or catheters, including active ones; S4 is an RA2 placed at a fixed distance from S1, driving the synchronous translation of S2 and S3 with respect to S1 via toothed belts or equivalent gear systems. The system is managed by an electronic control unit connected via wired or wireless network, preferably through a serial protocol such as RS485, with galvanic isolation and synchronized with supervisory and data-recording software. Optional modules include force sensors, artificial intelligence for pre-operative planning, and integration with in vitro patient simulators for training and validation.

The present invention relates to a training apparatus (1) for an endovascular intervention on a patient. The training apparatus (1) comprises: a simulation block (5), which is made of a material having a first refractive index (m) and comprises at least one internal cavity (11) configured to simulate a blood vessel of said patient, a supply apparatus (6) adapted to supply at least one of a first fluid (Fi) having a second refractive index (m) and / or a second fluid (F2) inside said internal cavity (11), said second fluid (F2) having a third refractive index (ns), a light radiation source (8) in such a way as to emit light radiation towards said simulation block (5), image acquisition means (9) configured to acquire images of at least the simulation block (5) and image display and recording means (10) configured to display the images acquired by the image acquisition means (9).

Systems and techniques are disclosed for improving real-time tissue characterizations during endovascular procedures. In some implementations, a method involves characterizing biological tissue for an endoluminal procedure. A first electrode is positioned within an endoluminal space adjacent to a region of biological tissue. A second electrode is positioned spatially separated from the first electrode. A variable-frequency input electrical signal is applied across the first electrode and the second electrode to generate an electrical field corresponding to the region. A voltage response is measured between the first electrode and the second electrode based on the electric field. A voltage phasor is determined based on the voltage response relative to the variable-frequency input electrical signal. A characteristic of the region is determined based on the voltage phasor.

An intravascular safety guidewire including an elongated main shaft, a distal terminus extending from the elongated main shaft, and an anchor rotatably connected to the distal terminus. In use, a needle is inserted into a patient's vein, then the intravascular safety guidewire is placed through the needle and into the vein, the needle is then removed over the intravascular safety guidewire, then a venous catheter is exchanged over the intravascular safety guidewire following serial dilatation using the Seldinger technique. Tubes such as dilators and catheters can then be placed over the intravascular safety guidewire and the intravascular safety guidewire ultimately removed. Currently complications can arise if a guidewire becomes retained inside a patient during an endovascular procedure, which is associated with high morbidity and mortality rates. The instant intravascular safety guidewire with its rotatable anchor reduces the likelihood of this complication.

This application provides a method and related device for risk warning of endovascular surgery based on surgical stage perception and temporal trend prediction. The method includes: S1. Real-time acquisition of multi-source data and surgical stage labels from endovascular surgical videos; S2. Querying a configurable scoring table based on the surgical stage labels; S3. Calculating sub-item scores based on the distance between the instrument tip coordinates and anatomical structures based on the scoring table; S4. Obtaining a comprehensive risk score by weighted summation of the sub-item scores based on dynamic weights and performing trend prediction to obtain a risk trend prediction value; S5. Classifying the comprehensive risk score based on multi-level thresholds to obtain a multimodal graded warning result; S6. Outputting the warning result in a structured form and performing self-learning updates based on surgeon feedback. This application also provides related devices corresponding to the method, including devices, electronic devices, computer-readable storage media, and computer program products.