A balloon guide catheter system including a balloon guide catheter having a catheter shaft that includes: (i) a main lumen; (ii) an inflation lumen; and (iii) an exhaust lumen. The terminating distal end of the inflation lumen and the terminating distal end of the exhaust lumen being in localized fluid communication with one another underneath the balloon while in a non-inflated state. A balloon is disposed about a distal region of an outer surface of the catheter shaft. The exhaust lumen is configured to purge the residual air in a proximal direction and out from a proximal region of the balloon guide catheter.

A medical manipulator includes: an end effector provided at a distal side of the medical manipulator; a proximal housing provided at a proximal side of the medical manipulator; and an elongated portion coupled to both the end effector and the proximal end. The elongated portion includes: a first elongated member coupled to both the end effector and the proximal housing; a second elongated member coupled to only either one of the end effector and the proximal housing, the second elongated member being configured to form by surrounding the first elongated member; and to be slidable in a longitudinal direction relative to the first elongated member; and a third elongated member coupled to both the end effector and the proximal housing, the third elongated member being configured to form an exterior of the elongated portion by surrounding the second elongated member.

Disclosed is a balloon catheter (1000) with a drug coating. The balloon catheter comprises a pushing catheter (310), at least one expandable first balloon (100) located at a distal end of the pushing catheter (310), and a pre-expansion mechanism. The first balloon (100) is fixedly arranged on the pushing catheter (310). The pre-expansion mechanism (200) comprises an expansion sleeve (220) and a connector (240). The expansion sleeve (220) is used for housing the first balloon (100) before the first balloon (100) is not expanded and when same is pre-expanded. The connector (240) is connected to the expansion sleeve (220) and axially moves with respect to the pushing catheter (310) after the first balloon (100) is pre-expanded, so that the first balloon (100) is exposed outside the expansion sleeve (220). The balloon catheter (1000) with a drug coating can effectively pre-expand a lesion location and can also effectively prevent the loss of a balloon with a drug coating during a delivery process, and is simple in terms of a surgical operation process.

The present invention is a self-cleaning catheter designed to impede the development of biofilm within the catheter and provide a mechanism for removing biofilm within the catheter during use by a patient. The self-cleaning catheter includes an outer shell enclosing a urine lumen. The urine lumen has the ability to be opened and closed with a urine lumen closure device and is formed with a plurality of micro ports and a plurality of macro wash ports. At least one antimicrobial lumen is affixed to the exterior of and in fluid communication with the urine lumen at the plurality of micro ports. Similarly, at least one wash lumen is affixed to the exterior of and in fluid communication with the urine lumen at the plurality of macro wash ports. Antimicrobial solutions and wash solutions are introduced into the urine lumen by the antimicrobial lumen and wash lumen respectively, even during use.

The present disclosure relates to medical devices that that include the following: a flexible elongate tube having a proximal end and a distal end configured to be directed toward an opening of a body lumen; a first lumen extending from the distal end of the tube proximally along the tube and having a fluid connection for a fluid source at its proximal end; a second lumen extending from the distal end of the tube proximally along the tube, the second lumen configured to accept a guidewire extending along the second lumen; and a wire filament extending along the elongate tube, a distal end of the filament connected to the distal end of the elongate tube, a proximal portion of the wire extending at least partially along the elongate tube, and a distal portion of the wire extending external to the elongate tube.

The invention provides a filter assembly including a string or wire such that a lasso type cincture is effected, said filter being openable and closeable while in deployed within a bodily vessel. A string lengthen or shorting adjustment mechanism, such as a ratchet or reel allows more length of string into the device or alternatively to shorten the length of available string in the system. The described invention, when used to ameliorate venous clots and most arterio-venous dialysis grafts, a filter-tipped aspirator is used downstream from the clot to capture and remove dislocated emboli. A method of using same is disclosed.

Briefly, in accordance with one embodiment, a multi-lumen shaft may be used to with an endoscopic instrument.

Devices and methods for the treatment of chronic total occlusions are provided. One disclosed embodiment comprises a method of facilitating treatment via a vascular wall defining a vascular lumen containing an occlusion therein. The method includes inserting an intramural crossing device into the vascular lumen, positioning at least the distal tip of the crossing device in the vascular wall, advancing an orienting device over the crossing device such that an orienting element of the orienting device resides in the vascular wall, inserting a reentry device, and re-entering the true vascular lumen.

A medical device may include a catheter, an expandable member, a cover, and an actuator. The catheter may include a longitudinal axis, proximal and distal ends, and a cover lumen extending from the proximal to the distal end. The expandable member may include proximal and distal ends and may be disposed on a distal section of the catheter. The cover may include a first region that may be disposed along the expandable member, and a second region that may extend along a length of the catheter beyond the proximal end of the expandable member towards the proximal end of the catheter. A first end of the cover may invert into the cover lumen. The actuator may be coupled to the first end of the cover and configured to move the first end of the cover towards the proximal end of the catheter along the longitudinal axis of the catheter.

The disclosed invention is in the field of medical devices, namely angioplasty balloon catheters. The embodiments provide an angioplasty balloon catheter that has favorable features of both biaxial and coaxial lumen configurations, such as pushability, torque, and trackability, enabled by a transition between a biaxial catheter segment and a coaxial catheter segment. In an exemplary embodiment a biaxial-coaxial lumen configuration facilitates injection of fluids through the catheter and out of the catheter proximal to its distal tip end with a guidewire in place in the catheter.