An atherectomy catheter includes an elongate flexible catheter body, a cutter near the distal end of the catheter body, a drive shaft connected to the cutter and extending within the catheter body, an imaging element near the distal end of the catheter body.

An implant removal device having an elongate body having a proximal end and a distal end, the elongate body being resiliently flexible and configured to transmit torque from the proximal end to the distal end with a predetermined turning ratio, and a capture structure extending distally from the distal end and having a capture region, the capture structure being configured to selectively center a deployed implant in relation to a longitudinal axis of the elongate body and the capture region to aid with capture and subsequent removal.

An atherectomy catheter includes an elongate catheter body, a cutter at a distal end of the catheter body, and a nosecone attached to a distal end of the catheter body. The cutter is configured to excise tissue from the body. The nosecone is configured to hold tissue excised from the cutter. The nosecone includes a distal section, a proximal section, and a connection mechanism that is configured to allow the distal section to attach and detach from the proximal section during use. The distal section includes a plug configured to sit within an inner diameter of the proximal section when the proximal section is connected to the distal section.

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.

Devices for restoring blood flow to facilitate lysis of clots and/or enable capture of clots are disclosed. The devices can be configured to be disposed within a lumen of a microcatheter that is inserted within neurovasculature above a carotid siphon to a location of a clot. The devices can include an elongate pusher member and a self-expandable capturing member coupled to a distal end of the elongate pusher member. The capturing member can comprise a generally cylindrical body having an cell structure that is configured to compress the clot against an inner wall of the neurovasculature and capture the clot at least partially on a surface of the generally cylindrical body upon deployment of the capturing member from the microcatheter, thereby restoring blood flow to the neurovasculature downstream of the clot.

A tissue resecting instrument includes a housing, a shaft extending distally from the housing and rotatable relative to the housing, and a tissue cutting extending distally from the shaft. The tissue cutter provides for both radial and distal resection of tissue.

An endoluminal punch system including a sheath and dilator. The endoluminal punch may include energy delivery system capable of being transmitted from the proximal end to the distal end of the endoluminal punch to assist with tissue crossing and incisions. The dilator may include selectively deployable cutting mechanism to create incisions in tissue that are larger than their basic external diameter. The system may also be configured to reduce the risk of generating plastic emboli during insertion of the endoluminal punch.

A medical cutting assembly (10) and a volume reduction catheter system are provided. The medical cutting assembly (10) includes a cutter head (101) and a limiting member (102) connected to the cutter head (101), where the cutter head (101) includes a delivery portion (1012); the limiting member (102) includes a decomposing portion (1021); and when the cutter head (101) and the limiting member (102) rotate relative to each other, the decomposing portion (1021) extends through the delivery portion (1012). The volume reduction catheter system includes a cutting section and a transfer section. The delivery portion (1012) can transfer excess tissue cut by the cutter head (101) from a distal end to a proximal end. The limiting member (102) is provided with the decomposing portion (1021). When the cutter head (101) and the limiting member (102) rotate relative to each other, the decomposing portion (1021) extends through the delivery portion (1012), such that the decomposing portion (1021) rotating at a high speed further cuts and decomposes the cut tissue in the delivery portion (1012) into smaller tissues, so as to achieve improved decomposition of the tissue in order to facilitate the subsequent discharge of the excess tissue.

Described here are methods and apparatuses for tracking a clot material within a lumen of a suction catheter. For example, an apparatus as described herein may include a flexible elongate body having a suction lumen, a first pair of electrodes within the suction lumen, a second pair of electrodes proximal to the first pair of electrodes, and a controller configured to track a clot material within the suction lumen based on signals from the first pair of electrodes and the second pair of electrodes.

An arthroscopic system includes a re-useable, sterilizable handle integrated with a single umbilical cable or conduit. The single umbilical cable or conduit carries electrical power from a power and/or control console to the handle for operating both a motor drive unit within the handle and delivering the RF power to a disposable RF probe or cutter which may be detachably connected to the handle. The RF power delivered to the handle and on to the probe or cutter is typically bi-polar, where the handle includes first and second electrical bi-polar contacts that couple to corresponding bi-polar electrical contacts on a hub of the disposable RF probe or cutter is connected to the handle.