In various aspects, present disclosure is directed to methods, devices and systems whereby one or more low viscosity fluids may be introduced into a catheter and whereby the one or more low viscosity fluids may be converted into a high viscosity fluid in the catheter, which high viscosity fluid may be delivered from an exit port of the catheter.

Methods, devices and systems are described for treating venous insufficiency in which the vein is compressed at least partially along a treatment zone. A system can be provided including an injection device, such as a glue gun, that is operably connected to a delivery catheter that can be advanced across a treatment zone in the vein. The delivery catheter can be used to deliver one, two, or more boluses of media (e.g., cyanoacrylate) to occlude the vein along different spaced-apart sections of the treatment zone. External compression can also be applied to the vein by a compression element, such as a hand or multifunctional ultrasound transducer, to occlude portions of the vein along the treatment zone prior to or during the introduction of the boluses of media.

A system related to the reparation of damaged veins along with the suspension of venous stasis progression by minimizing the leak reflux flow and the protection of the valve functions of the vena saphena magna, parva, perforator veins by means of exovascular or external filling agent injection in the treatment of venous stasis (which is also called varicose vein or varicose treatment).

An embolization system and methods for controlling solidification of embolic compositions comprising a first and a second embolic component that react with each other in vivo at a target site to form an embolic material, with the embolic components being dilutable in physiological fluids so that they do not form an embolic composition at a site that is not desired.

Described herein are systems, devices and methods that enable dynamic modification of the physicochemical properties of a hydrogel during its in vivo formation and delivery by a catheter. In some example embodiments, an extended endoluminal hydrogel delivery device is employed for delivering a hydrogel within given body cavity, such as within the lumen of a blood vessels. In some example embodiments, a hydrogel precursor, as a non-viscous liquid, is injected through an intravascular catheter and crosslinking of the hydrogel precursor is initiated within a distal region of the catheter. The crosslinking process is controlled, by a control means associated with a distal region of the catheter, to control or modify one or more properties of the hydrogel. The properties may be controlled such that a hydrogel is suitable to embolize the specific target or deliver drugs or other materials beneficial to the site.

A filler delivery device is configured to place a filler inside a bulge occurring in a body lumen. The filler delivery device includes a frame member configured to be expandable and compressible, and a tubular member through which a catheter for injecting the filler into the bulge is insertable. The tubular member is provided such that, when the frame member is in an expanded state, an open end of the tubular member is directed in a direction intersecting an extending direction of the body lumen. The filler material includes a base gel having flowability with which the filler material flows inside the catheter, and shape retainability with which the filler material stays inside the bulge after being injected from the catheter into the bulge, and a solidification promoting substance that promotes solidification of blood inside the bulge.

The present disclosure pertains to crosslinkable compositions and systems as well as methods for forming crosslinked compositions in situ, including the use of the same for controlling the movement of bodily fluid within a patient, among many other uses.

A device for occluding a perforation in a blood vessel includes a catheter shaft that has a first lumen and a second lumen. The first lumen is adapted to receive at least one of a guidewire and an implanted cardiac lead, and the second lumen is adapted to receive an inflation fluid. The device further includes an inflatable balloon that is carried by the catheter shaft. The inflatable balloon is adapted to receive the inflation fluid from the second lumen, wherein the second lumen includes a cross-sectional area at a location within the catheter shaft between 0.65 mm.sup.2 and 1.90 mm.sup.2 and the inflatable balloon comprises polyurethane having a Shore A durometer of about 85 A.

Endoprosthesis assemblies and methods for using the same. In at least one embodiment, the endoprosthesis assembly comprises an endoprosthesis comprising an impermeable inner wall defining an endoprosthesis lumen sized and shaped to permit fluid to flow therethrough, a distal balloon positioned at or near a distal end of the endoprosthesis and capable of inflation to anchor the distal end of the endoprosthesis within a luminal organ, and a proximal balloon positioned at or near a proximal end of the endoprosthesis and capable of inflation to anchor the proximal end of the endoprosthesis within the luminal organ, wherein when the endoprosthesis assembly is positioned within the luminal organ at or near an aneurysm sac, inflation of the distal balloon and the proximal balloon effectively isolates the aneurysm sac and prevents fluid within the aneurysm sac from flowing past the distal balloon and the proximal balloon.

The present invention relates to microparticles that can be used as drug-loaded hydrogel particles for embolization and a method for manufacturing same. The microparticles of the present invention have a very excellent anticancer agent adsorption ability, a short anticancer agent adsorption time, and a controllable decomposition time when administered in vivo. Therefore, when the microparticles of the present invention are used in chemoembolization, not only the anticancer effect is excellent, but also side effects can be minimized.