A device and method are described for aspirating within a patient during the delivery of a drug-coated treatment device to help remove drug coating dislodged in a patient's blood. The drug treatment device can be a drug-coated balloon, a drug-coated stent, or similar devices. The device can include an occlusion balloon to help contain the dislodged drug coating and aspiration can be applied proximally, distally, or both proximally and distally of the drug coated balloon during a procedure.

A device is disclosed herein, comprising: (a) at least three lumens, comprising a first lumen, a second lumen, and a third lumen, (b) a balloon inflation port in fluid communication with the first lumen, (c) a fluid delivery port in fluid communication with the second lumen, (d) a guidewire port in fluid communication with the third lumen, (e) a balloon in fluid communication with the first lumen, wherein the balloon has a first end and a second end, (f) one or more fluid delivery channels extending a length of the second lumen, and (g) one or more fluid delivery ducts extending from the one or more fluid delivery channels to an exterior surface of the second lumen, wherein the one or more fluid delivery ducts are defined only in a portion of the second lumen that is disposed adjacent the first end of the balloon.

This patent document discloses perfusion catheters and related methods for treating complications related to CTO interventions or dilating a vessel occlusion while maintaining a passage through the treated vessel segment. A perfusion catheter can include an inflatable balloon coiled in a helical manner around a central axis into a series of windings. An inner surface of the series of windings, when inflated, can define a passage through the inflatable balloon. A catheter can also include an elongate shaft extending from a proximal portion to a distal portion, having an inner surface that defines a lumen for providing inflation fluid to, or withdrawing inflation fluid from, a distal end of the inflatable balloon. A catheter can further include a guidewire support tube including a lumen, separate from the lumen from the elongate shaft and the passage through the inflatable balloon, for receiving a guidewire.

A balloon catheter is disclosed, which is capable of improving accuracy of an inspection result of a tube wall of an elongated member constituting a catheter shaft and achieving further improved product quality through the inspection, and a method of manufacturing an elongated member for a balloon catheter, which is used for the balloon catheter. In an outer tube of a balloon catheter, distal from a proximal end of a guide wire lumen is formed of a transparent material. From a distal end toward a proximal end, an inner tube of the balloon catheter has at least a first region and a second region, the second region being a transparent region that is more transparent than the first region.

Venous infusion catheter assemblies and methods of use are described herein. A catheter assembly may comprise an elongated body having a proximal end and a distal end, with an expandable occlusion element disposed on the elongated catheter body. A catheter may include a first infusion lumen extending to a proximal infusion port positioned on the catheter body proximally of the occlusion element and a second infusion lumen extending to a distal infusion port. Some embodiments may use a suction lumen extending to at least one suction port. When the catheter is introduced into vasculature of a patient, the suction port may be positioned in the patient's superior vena cava or right atrium to draw blood, the distal infusion port is positioned to direct normothermic or hyperthermic fluid toward the patient's heart, and the proximal infusion port is positioned to create a flow of hypothermic fluid in the patient's cerebral vasculature.

Novel catheter constructions comprising thin covering or wrapping materials such as polymer films. A catheter provided with a guidewire catheter lumen having a thin covering that is easily punctured by a guidewire at virtually any desired point along the catheter length. The thin covering may be integral with the catheter shaft, or may be a separate component that covers only the portion of the catheter shaft immediately adjacent the outer portion of the guidewire lumen, or may be a thin tubular construct that surrounds the entire catheter shaft. Moreover, polymer film can be used in combination with one or more elements to produce novel catheter constructions.

A catheter that includes a reinforcing body including a wire wound or woven so that a gap is provided between each winding or weave of the wire; an inner layer, the reinforcing body being embedded in at least a part of the inner layer; and an outer layer that covers an outer periphery of the inner layer in a circumferential direction, and the reinforcing body is formed integrally including a first diameter portion with a first outer diameter, a second diameter portion with a second outer diameter larger than the first outer diameter, and a tapered portion increasing in diameter toward a distal end side or a proximal end side between the first diameter portion and the second diameter portion, and at least the second diameter portion of the reinforcing body is embedded in the outer layer.

A drug delivery balloon apparatus is disclosed herein, comprising: (a) at least two lumens, comprising a first lumen and a second lumen, (b) a balloon inflation port in fluid communication with the first lumen, (c) a drug delivery port in fluid communication with the second lumen, (d) a guidewire port in fluid communication with the second lumen, wherein the second lumen is configured to receive both a guidewire and a drug solution, (e) an occlusion balloon, (f) a drug delivery balloon, where the occlusion balloon and the drug delivery balloon are in fluid communication with the first lumen, (g) one or more drug delivery channels extending the length of the second lumen, and (h) one or more drug delivery ducts extending from the one or more drug delivery channels to an exterior surface of the second lumen.

Provided herein is an intra-aortic balloon catheter including a tube; and a sheath seal including an elastomeric housing having a proximal end, a distal end, a lumen arranged between the proximal end of the housing and the distal end of the housing, wherein the housing includes an impingement device, wherein the lumen is configured to slidably receive the tube therein and the impingement device is configured to engage the outer surface of the tube and apply a force thereto in order to prevent the tube from sliding relative to the sheath seal when the impingement device is in a first state.

There is provided with a method. A cardia and a pylorus of a stomach of a patient is blocked. The stomach is inflated. The stomach is secured within an abdominal cavity of the patient.