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.

The invention comprises an indwelling medical device which is capable of delivering a therapeutic agent evenly along the length of the indwelling portion, including the outer wall, of the device.

Drug delivery systems and methods are disclosed herein. In some embodiments, a drug delivery system can be configured to deliver a drug to a patient in coordination with a physiological parameter of the patient (e.g., the patient’s natural cerebrospinal fluid (CSF) pulsation or the patient’s heart or respiration rate). In some embodiments, a drug delivery system can be configured to use a combination of infusion and aspiration to control delivery of a drug to a patient. Catheters, controllers, and other components for use in the above systems are also disclosed, as are various methods of using such systems.

A balloon catheter assembly is disclosed. A balloon catheter assembly comprising a proximal part, a middle part, an inflatable balloon and a long tip located at proximal end. The distal end comprising a port for inflation and middle part is connecting member extended from the proximal part end to distal part end. The middle part comprises of three lumens which is extended up to long tip (1) the inner most lumen permit use of a guidewire, (2) a middle lumen is for inflation and deflation of inflatable balloon through proximal part and (3) an outer lumen is comprises of plurality of holes. The plurality of holes of outer lumen spacedly located before and after of the inflatable balloon. The outer lumen hole of is expandable upon starching outer lumen allow to pass blood continuously.

Aspects of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a heart valve, into a patient. Such aspects can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some aspects can include various configurations of the sheath that comprise an elongated tube having a disclosed composition that can form an outer jacket or a strain relief jacket or can be used as the outer layer of the sheath. Aspects of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel and reduce the push force needed for passage of the medical device, thus offering advantages over prior art introducer sheaths.

A percutaneous catheter provides an adjustable diameter in order to reduce pressure loss, maintain a required flow, and avoid increasing a load to the patient. A catheter tube is formed of braided wires in an intersecting manner and extends in an axial direction. A distal tip is affixed to a distal side of the catheter tube and is configured to engaged a distal end of a dilator. The catheter tube includes a non-coated portion on a proximal side of the distal tip and a coated portion embedded in a resin material. An inner diameter of the non-coated portion is larger than an outer diameter of the dilator. When the dilator is fully inserted through the percutaneous catheter, the non-coated portion expands in the axial direction, reducing its in inner diameter so that an inner surface of the non-coated portion comes into tight contact with an outer surface of the dilator.

A phacoemulsification cutting tip, including a rigid tubular portion and a flexible and expandable tip portion located distal to the rigid tubular portion. The flexible and expandable tip portion presents an axial length and an unexpanded radius and is formed such that the axial length shortens while the unexpanded radius increases when differential pressure due to an occlusion of an opening of the flexible tip portion exists.

Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The distal end of the sheath is maintained in the first, low cross-sectional configuration and expanded using a radial dilatation device. In an exemplary application, the sheath is utilized to provide access for a diagnostic or therapeutic procedure such as ureteroscopy or stone removal.

A tool positioning system for use in a medical procedure is provided which includes a medical tool configured to be navigated to a target tool location within a portion of an organ of a patient. The medical tool includes a sheath having a tube defined by a sheath wall, the sheath extending a length in a proximal-distal direction and an inflatable balloon coupled to the sheath and configured to move along the length of the sheath in the proximal-distal direction. When the inflatable balloon is inflated at a target balloon location along the length of the sheath, the inflated balloon is fixed at the target balloon location. The tool positioning system also includes memory configured to store location of the tool in a three dimensional (3D) space and at least one processor configured to generate mapping information for displaying locations of the tool in the 3D space.

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having an expandable catheter. More specifically, the OTN catheter assembly includes a catheter having an expandable body with a proximal end and a distal end coaxially mounted onto a needle. The body defines a lumen extending from the proximal end to the distal end. Further, the body is expandable between a compressed length and an expanded length. The needle is configured within the lumen of the catheter and has a first length. The first length is longer than the compressed length of the catheter and shorter than the expanded length of the catheter. In addition, the body of the catheter is configured to expand from the compressed length to the expanded length when heat is applied to the catheter such that the distal end of the catheter extends past a distal end of the needle.