298 results about "Catheter sheath" patented technology

There is disclosed herein a device (1) for moving an elongate member relative to an. elongate body through which it extends, the device comprising: a housing (10) connectable to the elongate body; a mover (20) associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; and a pre-mover (40) for adjusting an elongate member connected to the mover relative to an elongate body connected to the housing in preparation for moving the elongate member with the mover. There is also disclosed a related surgical apparatus.

There is disclosed herein a device (1) for moving an elongate member relative to an. elongate body through which it extends, the device comprising: a housing (10) connectable to the elongate body; a mover (20) associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; and a pre-mover (40) for adjusting an elongate member connected to the mover relative to an elongate body connected to the housing in preparation for moving the elongate member with the mover. There is also disclosed a related surgical apparatus.

A steerable catheter sheath for use in directing a catheter into a desired position is provided. The sheath includes an elongated member configured to receive the catheter therein. The distal end of the elongated member is steerable in two directions, each direction having a different bent configuration, e.g., a sharp curve in one direction and an open arching curve in the other direction. A resilient structure having different bending properties in each of its lateral sides is carried in the distal portion of the elongated member and causes the asymmetric bending. In one embodiment, the resilient structure includes a hypotube with a plurality of notches and slits in the sides. In another embodiment, the resilient structure is covered in an outer coating having different durometer portions. The sheath is particularly useful for accessing left and right pulmonary veins when a transeptal entry approach is used into the left atrium.

The present invention provides an aortic valvuloplasty catheter which, in one preferred embodiment, has a tapered distal balloon segment that anchors within the left ventricle outflow track of the patient's heart and a rounded proximal segment which conforms to the aortic sinuses forcing the valve leaflets open. In addition, this embodiment of the valvuloplasty catheter includes a fiber-based balloon membrane, a distal pigtail end hole catheter tip, and a catheter sheath.

Systems, methods, and devices allow intravascular or percutaneous mapping, orientation or ablation, or combinations thereof in bodily cavities or lumens. A device includes a plurality of elongate members which are moveable between an unexpanded configuration, a bent or coiled stack configuration and an expanded or fanned configuration. The elongate members form a stack arrangement in the unexpanded configuration to fit through a catheter sheath. The elongate members follow respective arcuate or curvilinear paths as advanced from the sheath into the bent or coiled stack configuration, adopting volute, scroll or rho shapes, and may be nested. The elongated members are fanned or radially spaced circumferentially with respect to one another into the expanded or fanned configuration. Transducers carried by elongate members may sense various physiological characteristics of or proximate tissue, for instance temperature, and / or may apply energy to or proximate tissue, for example to perform ablation. The device is retractable.

A suturing device allows a physician to remotely seal an incision in a blood vessel or other biological tissue. The device comprises an elongated tubular body having a distal portion which is adapted to be inserted percutaneously through the incision and into the blood vessel. The distal portion has first and second retractable arms which extend from the distal portion of the body and releasably hold a suture within the blood vessel. First and second retractable needles, each of which is configured to catch the suture from a respective arm, are provided along the body proximal to the retractable arms. The arms and the needles are remotely movable by the physician using a handle or other control mechanism provided at a distal portion of the device. In operation, the arms are initially deployed within the blood vessel to hold the ends of the suture beyond the circumference of the tubular body. The needles are then deployed from and then retracted into the body, during which time the needles pierce the vessel wall on opposite sides of the incision, release the suture ends from the retractable arms, and pull the suture through the vessel wall. The device is particularly useful for closing an incision in an artery following a catheterization procedure. In one embodiment, the catheter sheath introducer (CSI) used to perform the catheterization procedure is left in place during the suturing procedure.

A catheter employs a pre-formed distal end and a proximal deflection mechanism for steering the catheter. A shaped member extends from a shaped region of the catheter sheath to at least a portion of an anchor region. A steering ribbon extends from a proximal region of the sheath and passes within at least a portion of the anchor region. A distal end of the steering ribbon is joined with a proximal portion of the shaped member. At least one steering tendon is disposed within the sheath and has a first end attached at the anchor region and a second end located at the proximal region of the sheath. Movement of the steering tendon in a proximal direction causes the deflection region to deflect relative to the longitudinal axis of the catheter while the shape of shaped region of the sheath is substantially maintained.