A medical apparatus according to one embodiment of the present invention can be used for dissociating adhesion to an epidural space and alleviating stenosis to a spinal canal; and comprises: an insertion part including a first end configured to be inserted into a human body and a second end opposite to the first end, and having a first through hole extended from the first end to the second end and formed inside the insertion part, an expansion part configured to be expandable and formed on an outer surface of the insertion part at a predetermined distance apart from the first end of the insertion part, a pair of wires extending in the insertion part and fixed to a region of the first end of the insertion part, a main body, a dial installed to the main body, and a rotation control part coupled to the dial.

Embodiments of the invention include a medical device for accessing a patient's body portion and used for diagnosis and treatment of medical conditions. Embodiments of the invention may include a particular endoscopic positioning mechanism for placing an endoscope and an additional treatment device within desired body portions in order to assist in diagnosis and treatment of anatomical diseases and disorders. In particular, a medical device according to an embodiment of the invention may include an outer flexible tube and a positioning mechanism configured for rotating one portion of the flexible tube relative to another portion of the flexible tube.

An ablation catheter including an elongate shaft, an inflatable balloon positioned at a distal region of the elongate shaft, a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon, a first ultrasound transducer disposed outside of the inflatable balloon, and a flexible circuit. The flexible circuit includes a first conductor and a second conductor and is disposed outside of and carried by the outer surface of the inflatable balloon. The first conductor is in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer.

The techniques of this disclosure generally relate to a vector flush sizing catheter that is used initially to disperse contrast and measure a length of a main vessel using radiopaque measuring markers of the catheter. Subsequently, the vector flush sizing catheter is used to guide and introduce another endovascular device into the main vessel. By using the vector flush sizing catheter for both procedures, the exchange of catheters, the complexity of the procedure, and the associated risks are minimized.

Systems and methods are described for removing an embolus in a cerebral vessel of a patient. The assembled system of devices includes a catheter having a catheter lumen and a distal end and a catheter advancement element extending through the catheter lumen. A tapered distal end region of the catheter advancement element extends distal to the distal end of the catheter. The assembled system of devices is advanced together towards an occlusion site in a cerebral vessel of a patient visible on angiogram. The occlusion site includes an angiographic limit of contrast and an embolus downstream of the angiographic limit of contrast. The catheter advancement element is advanced to a location past the angiographic limit of contrast without crossing the embolus. The catheter is advanced to position the distal end of the catheter at a treatment site located past the angiographic limit of contrast and aspiration applied.

A guidewire kit including a guidewire with a shaft having a curved steering section and including a straightener bounding a lumen for straightening at least the curved deflection section of the guidewire extending into the lumen for insertion of the tip and the curved deflection section of the guidewire into a needle inserted into a vessel of a patient. The straightener is of a length of at least 8 cm for obtaining an improved and more reliable steering effect of the curved steering section.

A surgical instrument of the present disclosure includes: a conductive cable member formed into a cable-like shape; a conductive outer shell covering a circumference of the cable member; first and second insulating portions made of materials having higher insulation properties than the cable member and the outer shell; a projecting portion projecting from a projecting insulating portion, which is one of the first and second insulating portions, toward a recessed insulating portion, which is the other, the cable member being inserted into the projecting portion; a conductive leading end portion separated from the recessed insulating portion and the outer shell, the leading end portion being bendable using tension of the cable member with an end portion connected thereto; and a power supply cable in a cable-like shape arranged inside the first and second insulating portions for supplying an electric power from outside to the leading end portion.

A system including an outer member, an elongated column member extending distally from the outer member and an inner member positioned coaxial with the outer member and attached to the column member. The inner member extends distally of the outer member and has a distal portion. The catheter is positioned within an outer catheter, such as an aspiration catheter, which provides a reinforcement member over the column member to restrict movement of the column member such that when one of the inner member or outer member is moved with respect to the other, axial compression of the column member is restricted by the inner wall of the outer catheter causing the distal portion of the inner member to deflect laterally to thereby redirect the outer catheter.

The objective is to provide a catheter that can realize a desired curved shape by preventing the curving axis of the catheter distal part from twisting, and preventing the catheter from kinking and decreased pushability. Disclosed is a catheter (1) having a shaft (2); at least one wire (30); a coil (60); a leaf spring (40) extending in the longitudinal direction and having a first connection part where its proximal part is fixed to a distal end part of the coil (60); and a cover tube (50) that is disposed outside the coil (60) and has a first fixed part (51) where it is fixed to the shaft (2) at a position proximal to the distal end of the coil (60) in the longitudinal direction.

A transseptal catheter delivery system includes an elongate first tubular member and an elongate second tubular member receivable within the first tubular member. The first tubular member includes an adjustable portion adjacent a distal end. The second tubular member is adapted to receive an instrument to be placed in the left ventricle, and includes a curved portion adjacent its distal end in a relaxed state. The adjustable portion is deflectable toward the atrial septum to guide a puncturing tool and/or guide insertion of the second tubular member through a septal puncture into the left atrium. Within the left atrium, the curved portion is oriented toward the left ventricle to guide insertion of a guide wire, and subsequently the second tubular member, into the left ventricle. Methods of transvenously accessing a left ventricle are also provided.