A system has a balloon guide catheter for use in mechanical thrombectomy procedures which requires very little preparation to inflate the balloon compared to most contemporary designs. The balloon guide catheter can have an elongated tubular member and a proximal luer. The elongated tubular member of the catheter can have two internal lumens. A first inner hollow lumen can have a large opening for aspiration and the advancement of auxiliary devices, and a second inflation lumen can provide a fluidic passageway to inflate the balloon. The proximal luer can have a luer lumen, an inflation port, and a mandrel hub. A removable mandrel can extend distally from the mandrel hub to occupy the full length and volume of the inflation lumen of the tubular member. A tab of the mandrel can extend external to the luer to facilitate removal of the mandrel from the catheter prior to inflating the balloon.

Balloon catheters that includes inner and outer elongate shafts, each of which is secured relative to an end of an inflatable member. The inner and outer elongate shafts are secured relative to one another at one more discrete connection locations. The balloon bonding locations are disposed radially inward relative to an outer dimension of the outer elongate shaft.

Disclosed is a balloon catheter (1000) with a drug coating. The balloon catheter comprises a pushing catheter (310), at least one expandable first balloon (100) located at a distal end of the pushing catheter (310), and a pre-expansion mechanism. The first balloon (100) is fixedly arranged on the pushing catheter (310). The pre-expansion mechanism (200) comprises an expansion sleeve (220) and a connector (240). The expansion sleeve (220) is used for housing the first balloon (100) before the first balloon (100) is not expanded and when same is pre-expanded. The connector (240) is connected to the expansion sleeve (220) and axially moves with respect to the pushing catheter (310) after the first balloon (100) is pre-expanded, so that the first balloon (100) is exposed outside the expansion sleeve (220). The balloon catheter (1000) with a drug coating can effectively pre-expand a lesion location and can also effectively prevent the loss of a balloon with a drug coating during a delivery process, and is simple in terms of a surgical operation process.

An intravascular blood pump (1) comprises a ring seal (10) that is configured to assume a collapsed configuration and an expanded configuration and configured to contact and seal against an inner wall of the patient’s blood vessel when inserted therein in the expanded configuration. A support member (12; 13) is disposed inside the ring seal (10) in order to support the ring seal (10) from the inside, wherein the support member (12; 13) is configured to collapse at least partially when a predetermined pressure difference between a proximal area and a distal area of the blood vessel acting on the ring seal (10) is exceeded.

A balloon catheter includes a shaft inserted into a body; a balloon attached to the shaft on a distal end side and is expandable by an expansion fluid supplied from a side of a proximal end of the shaft; an elastic band wound around an outer periphery of an intermediate portion between a distal end portion and a proximal end portion of the balloon , and is configured to limit expansion of the balloon at the intermediate portion; and a covering member covering an outer periphery of the elastic band. The balloon is expandable to a maximum expansion diameter from a folded state, in accordance with pressure of the expansion fluid, the elastic band is expandable beyond the secured diameter, by being elastically deformed by the balloon expanding, and the covering member is expandable by being elastically deformed by the balloon or the elastic band expanding.

A method of transarterial embolization agent delivery at a low pressure is provided. The method comprises advancing a delivery device with an occlusion structure in a retracted non-occlusive configuration through a supply artery to a vascular position in the supply artery that is in the vicinity of a target anatomical structure, the target structure having terminal capillary beds, expanding the occlusion structure from the retracted non-occlusive configuration to an expanded occlusive configuration, lowering a mean arterial pressure in a vascular space distal to the expanded occlusion structure, redirecting fluid flow from the collateral vessels toward the lowered pressure vascular space and into the target anatomical structure, injecting an embolization agent through the delivery device and into the lowered pressure vascular space, and delivering the embolization agent from the lowered pressure vascular space into the target anatomical structure. Other catheter assemblies and methods of use are also disclosed.

Catheter having an elongate tubular shaft including an inflation lumen and a guidewire lumen defined therein, the guidewire lumen extending along at least a distal length of an inner tubular member of the elongate tubular shaft. The catheter includes a distal tip member having a proximal end and a distal end, wherein the distal tip member is monolithic and the proximal end of the distal tip member is secured to a distal end of the inner tubular member. The catheter includes a balloon having a proximal portion and a distal portion, the proximal portion of the balloon sealingly coupled to the distal portion of the elongate tubular shaft. The distal portion of the balloon is sealingly coupled to the distal tip member and the balloon defines an inner chamber in communication with the inflation lumen, wherein the proximal end of the distal tip member is disposed within the inner chamber.

A balloon guide catheter system including a balloon guide catheter having a catheter shaft that includes: (i) a main lumen; (ii) an inflation lumen; and (iii) an exhaust lumen. The terminating distal end of the inflation lumen and the terminating distal end of the exhaust lumen being in localized fluid communication with one another underneath the balloon while in a non-inflated state. A balloon is disposed about a distal region of an outer surface of the catheter shaft. The exhaust lumen is configured to purge the residual air in a proximal direction and out from a proximal region of the balloon guide catheter.

An apparatus includes a shaft, an expandable dilation member, and a bulbous tip. The shaft has a first outer cross-sectional dimension. The dilation member is positioned proximal to the distal end of the shaft. The dilation member is operable to transition between a non-expanded configuration and an expanded configuration. The dilation member is sized to pass through a passageway associated with drainage of a paranasal sinus or a Eustachian tube when the dilation member is in the non-expanded configuration. The bulbous tip is positioned at the distal end of the shaft. The bulbous tip is distal to the dilation member. The bulbous tip has a second outer cross-sectional dimension. The second outer cross-sectional dimension is larger than the first outer cross-sectional dimension. The bulbous tip is removably secured to the distal end of the shaft.

The disclosure provides for an adjustable catheter system with isovolumetric suction and restoration of fluid for the removal of a thrombus and a method of use thereof. The catheter system includes an inner catheter and an outer sheath surrounding at least a portion of the inner catheter. The inner catheter may include at least three lumina extending from the proximal end to the distal end of the inner catheter, at least one infusion fenestration along the infusion segment, and a distal encapsulation balloon at the distal end. The outer sheath may include at least three lumina extending from the proximal end to the distal end of the outer sheath and a proximal encapsulation balloon at the distal end. The catheter system may further include an agitator for mechanical morcellation of the thrombus.