Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A method in accordance with embodiments of the present technology can include, for example, positioning a distal portion of a catheter proximate to the clot material within the blood vessel. The method can further include coupling a pressure source to the catheter via a tubing subsystem including a valve or other fluid control device and, while the valve is closed, activating the pressure source to charge a vacuum. The valve can then be opened to apply the vacuum to the catheter to thereby aspirate at least a portion of the clot material from the blood vessel and into the catheter.

A medical assembly includes an expandable-mouth catheter and an introducer tool configured to facilitate advancement of the catheter into a delivery sheath. In some examples, a distal-most portion of the introducer tool includes a plurality of axial extensions separated by triangular-shaped slits. When the catheter is received within the introducer tool and when the introducer tool is received within a tapered portion of the delivery sheath, the axial extensions are configured to collapse radially inward to radially compress the expandable member and to enable the introducer to extend farther into the delivery sheath.

Example systems and methods of treatment are presented herein which generally involve expanding a bracing frame within a blood vessel between a clot and an aspiration catheter, aspirating the clot through a passageway of the bracing frame, and supporting the blood vessel by the bracing frame as negative pressure is created by the aspiration. The bracing frame can thereby reduce likelihood of blood vessel collapse compared to a similar procedure which does not include the bracing frame. The bracing frame can be removed from the blood vessel during treatment. In some examples, the bracing frame can further function to expand a mouth of the catheter. In some examples, the system can include a stentriever.

An atherectomy device for removing deposits such as plaque from an interior of a vessel including an outer member and a rotatable shaft positioned for rotational movement within the outer member and fixed axially within the outer member. A tip is mounted to the distal region of the rotatable shaft and is positioned distally of the distal end of the outer member to create a gap between the proximal end of the rotatable tip and the distalmost edge of the outer member. The rotatable tip has a longitudinal axis mounted to the rotatable shaft for rotation about its longitudinal axis upon rotation of the shaft, the shaft including a guidewire lumen for receiving a guidewire to enable over the wire insertion of the device.

Balloon/infusion catheters comprise internal corewires within a single lumen structure in which the corewire can slide relative to the catheter tube within limits, and the balloon is attached to the catheter tube on one end and to the sliding corewire on the other end. The lumen provides fluid to inflate the balloon and to infuse fluid into the vessel proximal to the balloon. The infusion ports can have a polymer valve to limit infusion to lumen pressures at which the balloon is appropriately inflated. The balloon/infusion catheter can have an integral flow meter near its proximal end. Corresponding methods for use of the balloon/infusion catheter are described, such as for the delivery of hydraulic forces when used in conjunction with an aspiration catheter.

An aspiration system includes an aspiration catheter including a tubular aspiration member having a proximal end, a distal end, and a lumen, and configured to at least partially extend out of the lumen of an elongate tubular member and into the vasculature of a subject, an elongate support member coupled to the tubular aspiration member and extending between the proximal end of the aspiration catheter and the proximal end of the tubular aspiration member, a high pressure injection lumen extending within the elongate support member and having a distal end including a curved portion configured to change a direction of fluid flow by at least about 90°, at least one orifice located at the distal end of the high pressure injection lumen configured to allow liquid to be released into the lumen of the tubular aspiration member, and an annular seal carried by the tubular aspiration member and configured to create a liquid seal against the inner surface of the elongate tubular member.

An ultrasonic thrombus removing system includes a front sheath tube (1) and a rear sheath tube (5) that are independent and that are inserted into a blood vessel (2); a rear end outer portion of the front sheath tube (1) is mounted with a front blocking balloon (105), and a front end outer portion of the rear sheath tube (5) is mounted with a rear blocking balloon (504); a breaking cavity (4) being formed between the two blocking balloons; the front blocking balloon (105) and the rear blocking balloon (504) expand or contract in the blood vessel (2) by means of the squeezing or loosening of an external force so as to block or open front and rear sides of the thrombus (3); an inner portion of the rear sheath tube (5) is provided with a core tube (502) that co-axially penetrates therethrough, a front end of the core tube (502).

Described here are methods and apparatuses for tracking a clot material within a lumen of a suction catheter. For example, an apparatus as described herein may include a flexible elongate body having a suction lumen, a first pair of electrodes within the suction lumen, a second pair of electrodes proximal to the first pair of electrodes, and a controller configured to track a clot material within the suction lumen based on signals from the first pair of electrodes and the second pair of electrodes.

A medical device and a treatment method are disclosed that can be applied to body lumina with a wide range of inside diameters and can enhance a property for suction of a substance from the inside of a body lumen by restricting flow within the body lumen. The medical device includes an elongated shaft section; an expanding section that is an elastically deformable tubular body provided with a plurality of openings; a flexibly deformable tubular cover section that is coupled to an end portion on a proximal side of the expanding section, surrounds an outer periphery of the expanding section on the proximal side, but does not surround, and externally exposes, an outer periphery of the expanding section on a distal side; and a sheath capable of accommodating the expanding section and the cover section in a diameter-reduced state.

A medical system may include an insertion device having a handle, a shaft coupled to the handle of the insertion device, and a port positioned on the handle of the insertion device. The port may be in fluid communication with a working channel of the shaft. The port may be a female luer port. The medical system may further include a medical device having a control member terminating in an end effector, a handle having a plurality of circumferential slots along the length of the handle, and a plunger moveable along a longitudinal axis of the handle of the medical device between a first position and a second position. In the first position, the end effector may be positioned within the shaft, and in the second position, the end effector may be positioned distally of the shaft.