The present invention relates to a direction-controllable drug injection catheter. According to the present invention, provided is the catheter extending along a central axis A including a drug injection part in which a drug injection channel has been formed; a channel opening and closing means which opens and closes the drug injection channel; and a steering structure which is rotationally asymmetric with respect to the central axis A and varies according to a pressure change of the drug injection channel for the purpose of steering.

Disclosed is an assembly of parts for an endourological procedure, including a tubular sheath and an introducer, the tubular sheath being removably mounted on the introducer. The introducer comprises a security channel that is openable to shift a guidewire from a position inside the security channel to a position outside and next to the tubular sheath. Disclosed are also access sheaths and a method of performing an endourological procedure.

A delivery system is disclosed which can be used to deliver an ocular implant into a target location within the eye via an ab interno procedure. In some embodiments, the implant can provide fluid communication between the anterior chamber and the suprachoroidal or supraciliary space while in an implanted state. The delivery system can include a proximal handle component and a distal delivery component. In addition, the proximal handle component can include an actuator to control the release of the implant from the delivery component into the target location in the eye.

An intravascular device delivery system has an elongated member with an outer sleeve and a distal cap longitudinally fixed to a guidewire receiving member. The guidewire receiving member is moveable longitudinally relative to the outer sleeve to move the distal cap relative to the outer sleeve.

The present invention relates to a safety puncturing system comprising a cannula and a guidewire.

Occlusive implants are provided with various embodiments of active and/or passive release structures. Systems for delivering the occlusive implants as well as methods for making and delivering the implants are also provided.

A portable hand-held medical device includes a body having a gun-type formation that includes a barrel. A guide wire device is housed in the body and is configured to advance and retract through the barrel. The guide wire device carries a bundled arrangement including a video system, an illumination system to support the video system, a fluid irrigation line, and a guide wire mechanism. The bundled arrangement is packaged as a unit in an insertion tube. The tip section of the insertion tube incorporates a camera, a light source, and a fluid irrigation port. A catheter is disposed at the end of the barrel, so that during operation the guide wire device passes through the catheter lumen. The combination guide wire device and catheter enter the urinary tract and perform a bladder evacuation process.

The subject guide catheter extension system with a micro-catheter delivery catheter includes an outer sheath, an inner member extending within the sheath, and a mechanism for engagement/disengagement of the inner member to/from the sheath. Several mechanisms of engagement/disengagement between the inner and outer members are provided including a friction mechanism, threaded mechanism, pull away sheath, and engagement/disengagement mechanism for pusher's handles. The sheath and the inner member are modified for different engagement/disengagement mechanisms operation. A micro-catheter delivery system provides for an improved atraumatic crossability to the treatment site in an expedited and simplified fashion. During a procedure, a guidewire along with a guide catheter are advanced to the vicinity of the treatment site within a blood vessel. Subsequent thereto, the subject guide catheter extension system is manipulated to advance the micro-catheter along the guidewire inside the guide catheter towards and beyond the site of interest. Once the micro-catheter is in place, the outer sheath slides along the micro-catheter until reaching the lesion, and then the inner member is removed from the sheath, and the sheath then is ready for passing the treatment catheter (stent/balloon) towards the lesion to be treated.

Systems for providing access across a site of obstruction and methods for manufacturing and using such systems. Such systems may include a sleeve having an inflation lumen; a bushing disposed in a distal section of the sleeve; and an everting member coupled to the sleeve with the bushing, the everting member being movable from an inverted position inside the sleeve to an everted position outside the sleeve in response to an increase in pressure in the inflation lumen.

An apparatus to contain the reaction vessel in which gallium nitride crystals (henceforth referred to as bulk crystals) can be grown using the ammonothermal method at high pressure and temperature is disclosed. The apparatus provides adequate containment in all directions, which, for a typical cylindrical vessel, can be classified as radial and axial. Furthermore, depending on the specifics of the design parameters, the apparatus is capable of operating at a temperature up to 1,200 degrees Celsius, a pressure up to 2,000 MPa, and for whatever length of time is necessary to grow satisfactory bulk crystals. The radial constraint in the current disclosure is provided by using several stacked composite rings. The design of the apparatus is scalable to contain reaction volumes larger than 100 cubic centimeters.