The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen (114) with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon (104) inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

A deflectable multidirectional balloon tipped catheter system for conducting peripheral vascular procedures in a remote entry point such as an opposite extremity or other branch point in the arterial system is provided. The catheter system includes a multidirectional catheter body, which includes a wire lumen and a balloon lumen with a control port for connecting to a balloon control and a balloon inflation port, and a compliant or non-compliant anchor balloon connected near the flexible catheter distal end. A method for treating peripheral vascular disease, administration of pharmaceutical and chemotherapeutic agents to the local vascular system, and therapeutic embolization of vascular territories by using the catheter system is provided.

An endovascular occlusion device. The endovascular occlusion device (300) has a balloon (306) and a catheter (304). The catheter (304) has a distal end (308), a proximal end, and a lumen (318) extending therebetween. The balloon (306) is positioned proximate to the distal end (308) of the catheter (304) and has a deflated state and an inflated state. The catheter (304) further includes a plurality of ports (314) proximate to a proximal end of the balloon (306). Each port (314) extends through a wall of the catheter (304) such that surface (316) of the catheter (304) is in fluid communication with the lumen (318) of the catheter (304). A flow restrictor (324) is positioned within, and is in sliding relation with, the lumen (318) of the catheter (304). Movement of the flow restrictor (324) is configured to close one or more ports (314) of the plurality so as to limit blood flow through the lumen (318) of the catheter (304).

An endovascular occlusion device. The endovascular occlusion device (300) has a balloon (306) and a catheter (304). The catheter (304) has a distal end (308), a proximal end, and a lumen (318) extending therebetween. The balloon (306) is positioned proximate to the distal end (308) of the catheter (304) and has a deflated state and an inflated state. The catheter (304) further includes a plurality of ports (314) proximate to a proximal end of the balloon (306). Each port (314) extends through a wall of the catheter (304) such that surface (316) of the catheter (304) is in fluid communication with the lumen (318) of the catheter (304). A flow restrictor (324) is positioned within, and is in sliding relation with, the lumen (318) of the catheter (304). Movement of the flow restrictor (324) is configured to close one or more ports (314) of the plurality so as to limit blood flow through the lumen (318) of the catheter (304).

The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

A system to dilate a stenotic region of an airway of a patient includes a stylet and a dilation catheter. The dilation catheter includes a catheter shaft and an inflatable balloon. The catheter shaft defines a shaft lumen and is configured to receive at least a portion of the stylet. The shaft lumen is axially aligned with a first longitudinal axis. The inflatable balloon is in fluid communication with an inflation lumen. The inflatable balloon is configured to transition between non-expanded and expanded configurations using the inflation lumen. The inflatable balloon has an outer perimeter configured to contact the stenotic region of the airway when in the expanded configuration. The inflatable balloon includes a pass-through lumen that is axially aligned with a second longitudinal axis that is laterally offset a distance from the first longitudinal axis. The pass-through lumen is disposed completely within the outer perimeter of the inflatable balloon.

Methods and devices for controlling blood perfusion pressure along with regional mild hypothermia. In at least one embodiment of a device for controlling blood perfusion pressure within a vessel of the present disclosure, the device comprises an elongated body having a lumen, a proximal end configured for placement in a first area having a first blood pressure, and a distal end configured for placement in a second area having a second blood pressure, a partial occluder positioned within the lumen of the elongated body between the proximal end and the distal end, the partial occluder configured so not to fully occlude a blood vessel and to equalize the first blood pressure at the first area with the second blood pressure at the second area, and a regional hypothermia system operably coupled thereto, the regional hypothermia system operable to reduce and/or regulate a temperature of a bodily fluid flowing therethrough.

Disclosed herein are designs for improved inflatable structures for use during minimally invasive cardiovascular procedures. These inflatable structures facilitate the perfusion of blood through an anatomical structure, such as a heart valve, during the cardiovascular procedure. The inflatable structures are formed of a plurality of balloons arranged radially around a central location. The plurality of balloons form a lumen through which blood flows. Each balloon of the plurality is shaped or configured to stabilize the adjacent balloons, limiting their movement relative to each other. For example, some embodiments can feature balloons with a keystone shape that limits movement of the balloons inward toward the lumen. Some implementations can also include a support coil running through the lumen. The support coil holds enables the lumen to be open to perfusion even in the early stages of balloon inflation.

This patent document discloses perfusion catheters and related methods for treating blood vessel lesions and abnormalities. A perfusion catheter can include an inflatable balloon, an elongate shaft operably attached to the balloon, and an optional containment structure surrounding at least a portion of the balloon. The balloon can be inflated until its outer surface contacts a wall of a blood vessel. When inflated, the balloon's inner surface defines a passage for blood to flow. The balloon can be configured to release one or more substances formulated to treat a tissue at or near the wall of a blood vessel. In an example, the balloon can include a bioactive layer, which comprises the one or more substances, overlaying an optional base layer. In an example, the balloon can include multiple filars, at least one of which is configured to elute the one or more substances through a perforation or hole in the filar.

The disclosure relates to devices and methods for the treatment of edema, which devices use a restrictor for flow compensation. Devices and methods of the invention further use a flow-restrictor in the circulatory system, upstream of an intravascular pump, to balance pressure changes induced by the pump and to compensate for downstream flow. The device may be provided as an indwelling, intravascular catheter with a mechanical pump such as an impeller and a selectively deployable restrictor such as an inflatable balloon. Congestive heart failure or edema is treated by\operating the pump in an innominate vein and using the restrictor for flow compensation, to restrict the upstream flow and thus amplify or maintain pressure reduction at the lymphatic outlet.