A device and method for intravascular treatment of atherosclerotic plaque prior to balloon angioplasty which microperforates the plaque with small sharp spikes acting as serrations for forming cleavage lines or planes in the plaque. The spikes may also be used to transport medication into the plaque. The plaque preparation treatment enables subsequent angioplasty to be performed at low balloon pressures of about 4 atmospheres or less, reduces dissections, and avoids injury to the arterial wall. The subsequent angioplasty may be performed with a drug-eluting balloon (DEB) or drug-coated balloon (DCB). The pre-angioplasty perforation procedure enables more drug to be absorbed during DEB or DCB angioplasty, and makes the need for a stent less likely. Alternatively, any local incidence of plaque dissection after balloon angioplasty may be treated by applying a thin, ring-shaped tack at the dissection site only, rather than applying a stent over the overall plaque site.

A balloon catheter includes a catheter (1) and a balloon body (2) sleeved on the catheter (1). The balloon body (2) includes an inner layer balloon (21) and an outer layer balloon (22). The inner layer balloon (21) and the outer layer balloon (22) are both directly wrapped and fixed on the catheter (1). The inner layer balloon (21) is located inside the outer layer balloon (22). A medium channel (23) is formed between the inner layer balloon (21) and the outer layer balloon (22). An outer layer medium inlet hole (11) and a medium backflow hole (12) both in communication with the medium channel (23) are provided in the catheter (1). In the balloon catheter, the double-layer balloon body (2) is provided, so that a medium can flow in the medium channel (23) between the inner layer balloon (21) and the outer layer balloon (22), the medium flows into the medium channel (23) through the outer layer medium inlet hole (11), and then the medium in the medium channel (23) flows out through the medium backflow hole (12) to implement circulation. In this way, more medium can exchange heat on the inner surface of the outer layer balloon (22) and the flow rate distribution is relatively uniform, to increase the flowing quality of the medium on the surface of the balloon body, thereby improving the heat exchange efficiency.

The disclosure provides for a device and method for dilation. The dilation device may include a catheter body having a proximal portion and a distal portion, a dilation expandable body in fluid communication with a first opening on the distal portion of the catheter body, and an occlusion anchor expandable body in fluid communication with a second opening on the distal portion of the catheter body. The method for dilating a stricture site may include inserting the dilation device into a stricture site of a patient, expanding the occlusion anchor expandable body at the stricture site, and expanding the dilation expandable body at the stricture site.

The disclosure provides for a device and method for dilation. The dilation device may include a catheter body having a proximal portion and a distal portion, a dilation expandable body in fluid communication with a first opening on the distal portion of the catheter body, and an occlusion anchor expandable body in fluid communication with a second opening on the distal portion of the catheter body. The method for dilating a stricture site may include inserting the dilation device into a stricture site of a patient, expanding the occlusion anchor expandable body at the stricture site, and expanding the dilation expandable body at the stricture site.

Provided herein are methods and systems for the removal of anatomical occlusions, and an occlusion removal device comprising a first body adapted to be mounted to a delivery wire and releasably engaged to the delivery wire, wherein while engaged the first body remains fixed on the delivery wire and upon release moves axially along the delivery wire, and a second body adapted to be mounted to the delivery wire. A first proximal body may be oriented proximally to a second distal body. The proximal body and the distal body may be adapted to expand upon exiting a delivery catheter. The proximal body may be releasably engaged by a mechanically breakable connection or an electrolytically or heat disconnectable connection, the electrolytically disconnectable connection being broken upon an application of electric current to the electrolytically disconnectable connection.

A clot removal device for removal of an occlusion from a lumen in a patient's body is provided. The clot removal device has a lumen, an elongated member positioned within the lumen and extending axially from a proximal end to a distal end of the lumen, a handle attached to the proximal end of the lumen, a first expandable member positioned along a length of the elongated member, a second expandable member positioned along the length of the elongated member, wherein the second expandable member is distal to the first expandable member relative to the handle. The handle has at least one actuation mechanism and at least one of the following applies: a) the first expandable member is coupled to the at least one actuation mechanism and is configured to be moveable relative to the second expandable member upon manipulation of the at least one actuation mechanism; b) the first expandable member is configured to mechanically expand or contract by manipulating the at least one actuation mechanism; c) the second expandable member is coupled to the at least one actuation mechanism and is configured to be moveable relative to the first expandable member upon manipulation of the at least one actuation mechanism; or d) the second expandable member is configured to mechanically expand or contract by manipulating the at least one actuation mechanism.

A pessary system for providing pelvic floor support for USL and other ligaments. The pessary has an elongated probe with independently inflatable balloons each located substantially the same distance from the insertion end of the probe and which inflate into separate radial sectors. The probe can be inserted into a vaginal cavity and the balloons inflated provide mechanical support to the USLs. Independent inflation of each balloon allows the mechanical USL support provided to be varied on left and right sides to compensate for differences in the degree of degradation and positioning of the USL ligaments on either side.

Systems and methods for localized drug delivery via undulating drug coated balloons (DCB), in particular using functionalized nanoparticles as a drug delivery medium in combination with an undulating balloon, are disclosed. In various disclosed embodiments, a nanoparticle matrix is adhered to in an external substrate-surface, such as the balloon surface, and is activated for release once at the treatment site. Activation for release may be enhanced through the use of an undulating balloon system including methodologies for precise control of timing, waveform and extent of undulations.

A pessary system for providing pelvic floor support for USL and other ligaments. The pessary has an elongated probe with independently inflatable balloons each located substantially the same distance from the insertion end of the probe and which inflate into separate radial sectors. The probe can be inserted into a vaginal cavity and the balloons inflated provide mechanical support to the USLs. Independent inflation of each balloon allows the mechanical USL support provided to be varied on left and right sides to compensate for differences in the degree of degradation and positioning of the USL ligaments on either side.

The invention relates to a balloon catheter, in particular for the widening of stents in fenestrations and for T-branch protheses, being provided with a balloon (4), a supply line in the catheter (2) leading to the balloon (4), which allows the balloon (4) to be pressurized, and a central lumen (3) for a guidewire, with the balloon (4) in the expanded state having at least two areas (P, D, M) of different diameter, with these areas merging into one another by forming a step.