A tubular shaped elongated catheter device assembly with a distal and a proximal end, comprising an intraluminal distal segment and an extraluminal proximal segment, comprising one or more chemical and/or biological agents, for interaction with bodily fluids of luminal organs, wherein the intraluminal segment comprises at least one expandable cross-sectional area which in its expanded state is smaller than the cross-sectional area of the luminal target site and wherein at least the expandable portion of the intraluminal segment is capable of interacting with at least one component of the bodily fluid via an interactive contact surface.

A medical device to be inserted into a blood vessel for effectively removing an object flowing in a biological lumen while reducing the burden on the living body includes an elongated shaft portion, and an expansion portion which is an elastically deformable cylindrical body having a plurality of gaps and in which a proximal portion or a distal portion of the cylindrical body is interlocked with the shaft portion. The expansion portion has a ring-shaped or annular bent portion which protrudes toward a proximal side position radially outside the expansion portion in a bent state of being bent along an axial direction, and an axial length of a second portion from the bent portion to a proximal end of the expansion portion is shorter than an axial length of a first portion from the bent portion to the distal end of the expansion portion.

An intravascular catheter device and methods for using the same are provided. An expandable portion is provided at a distal end of a flexible catheter tube and includes struts operable between a first position and a second position where the struts are moved outward from the first position. An incising member is provided at, and extends along a lengthwise dimension of, and outward from, at least one of the struts. An embolic protection device is provided which is configured for movement between a first position and a second position where the embolic protection device is enlarged relative to said first position.

The present invention relates generally to a method and apparatus for retaining a mechanical connection between an intravascular medical device and a delivery system during deployment until deliberately released in a vessel. In some embodiments, the present invention relates to a method and apparatus for the deployment and retrieval of a vena cava filter.

As may be implemented in accordance with one or more embodiments characterized herein, aspects of the present disclosure are directed to an apparatus including first and second filters, a shaft and a frame coupled to the shaft and to the first filter. The frame and shaft operate to seal a perimeter of the first filter around an opening in a sidewall of a tubular structure, by pressing the frame against the perimeter and the sidewall. The second filter is also coupled to the frame and operates with the frame to extend into cross section of the tubular structure away from the frame and the sidewall, with the frame sealing the first filter around the opening, and to filter particles from fluid flowing past the opening and along the length of the sidewall.

An intravascular filter for blocking passage of embolic debris into the cerebral and aortic circulation upon removal of the cross clamp from the aorta during open heart surgery. The filter comprises a self expandable tubular wire frame, having a proximal end, a distal end and a lumen defined within a tubular sidewall. A tubular porous membrane is carried by the sidewall and extends across the proximal or distal end, so that debris entering the other end can be captured within the lumen, the membrane having a distribution of pore sizes. A control wire extends proximally from the filter. In use, the aorta may be cross clamped over the control wire or over the filter. Following removal of the cross clamp, blood is allowed to perfuse through the membrane in the direction of the descending aorta while retaining embolic debris therein for subsequent removal, and the filter and debris may be proximally retracted using the control wire.

A treatment device (500) is provided including a shaft (507), an expandable member, a first elongated control member (508) and a second elongated control member (502). The expandable member can further include at least a first controllable portion (504) and a second controllable portion (503), where the expandable member, including the first controllable portion and the second controllable portion, is configured to transition between at least a partially retracted configuration and an expanded configuration under control of at least the first elongated control member (508). Further still, the first controllable portion can be configured to transition between at least a partially retracted configuration and an expanded configuration, while the second controllable portion (503) is configured to remain substantially unchanged, under control of at least the second elongated control member (502).

A filter device insertable into a biological lumen includes a shaft portion and an elastically deformable portion interlocked with the shaft portion, the deformable portion having a plurality of wires braided in a mesh shape. The wires include wires of a first type, each having a diameter d. A sum of d.sup.3 of all of the wires is 0.08 to 0.25 mm.sup.3.

The disclosure provides an IVC filter device and method to filter. The device has a first bar and a first slider. The first slider has a first bore formed therethrough slidably disposed on the first bar. The device further comprises a second bar and a second slider. The second slider has a second bore formed therethrough and slidably disposed on the second bar. The device further has a first set of filter struts with a first filter strut being arcuate and attached to the first bar. The first filter strut may extend to the second slider. In addition, a second set of filter struts has a second filter strut being arcuate and attached to the second bar, extending to the first slider. When disposed in the vena cava, the device may receive a force through its filter struts and slide one of the sliders to accommodate the force.

An intravascular emboli capture and retrieval system for intravascular embolism protection and embolism removal or maceration. Guidewire mounted proximally and distally located multiple opening filters are deployed within the vasculature and used to part, divide and macerate embolic debris and to capture such embolic debris within the confines thereof. A deployable flexible preformed memory shaped capture sleeve is alternatively used to collapse one or more filters and embolic debris therein for subsequent proximal withdrawal from the vasculature.