A stone retrieval device includes a sheath and a stone retrieval basket that includes a distal region with a plurality of basket wires and a proximal region with one or more core wires. The stone retrieval basket is contained within the sheath and is movable out a distal opening of the sheath to cause the plurality of basket wires to open into a basket shape. The stone retrieval device further includes a lock mechanism that locks the position of the stone retrieval basket with respect to the position of the sheath and a basket force controller that includes a first control stage and a second control stage. The first control stage includes a sensor for measuring force on the stone retrieval basket when the lock mechanism is in an unlocked position, and the second control stage includes a sensor for measuring force on the stone retrieval basket when the lock mechanism is in a locked position. The stone retrieval device further includes an automatic release mechanism that releases the stone retrieval basket when the force on the stone retrieval basket exceeds a predetermined maximum force.

A method and a device for secured retrieval of tissue from inside a patient body and a kit comprising the device. the device comprises a tube housing a movable cutter. The cutter controllably extends from the tube while allowing continued fluid communication. The device comprises a retractable enclosure with a supporting frame linked to an impermeable membrane comprising an opening. Amplitude of the supporting frame is controlled. The opening in the impermeable membrane is unseal when enclosure is expanded and, when the tissue is positioned within the enclosure, the opening is sealably closed in the impermeable membrane. The moveable cutter morcellates the tissue into tissue specimens when the opening in the impermeable membrane is sealably closed while amplitude of the supporting frame is reduced to compress the tissue specimens and the tissue specimens are able to transit in the fluid communication channel through a discharging aperture after morcellation.

A medical device may include a sheath extending from a proximal end to a distal end. The medical device may further include a light source coupled to the sheath. The light source may have a first state in which light is not emitted distally of sheath and a second state where the light source emits a visual pattern distally of the distal end of the sheath. The visual pattern may represent a cross-sectional dimension of a structural feature of the sheath.

According to one aspect, a medical device including a shaft having a proximal and a distal end. The medical device may also include a handle coupled to the proximal end of the shaft. The medical device may further include a body at the distal end of the shaft. The body may have a wall defining a lumen within the body, and the lumen may have a longitudinal axis. The wall may include a protrusion at the distal end of the body, and the protrusion may be defined by a gap in the wall and may have a sharp portion configured to grasp tissue. The gap may extend proximally from the distal end of the body, and edges of the wall defining the gap may be transverse to the longitudinal axis.

The present technology is directed generally to devices, systems, and methods for capturing and cutting fibrous and trabeculated structures (such as synechiae) in vessel lumens. In one embodiment, the present technology includes an intraluminal tissue modifying system configured to capture the fibrous structures, put the fibrous structures in tension, and controllably cut through the fibrous structures without applying appreciable additional force to the vessel wall. The system may include an expandable capture device and a cutting device.

Systems and methods for facilitating the removal of a tissue specimen from a patient are disclosed. The systems include a bag or pouch, a tissue cutter device, a support and a stabilizer. The tissue cutter device includes a passer, a wire, and a handle. The support is an elongated member. The passer is an elongated member configured to be coupled to the support and introduced as a temporary unit into the mouth of the bag or pouch in the patient's body holding the tissue specimen. The wire is attached to the passer. The temporary unit is configured to pass around the tissue specimen and out of the opening in the bag or pouch to carry the wire through that path so that a distal portion of the wire and a proximal portion of the wire are outside the patient's body. Those portions of the wire can be pulled to cut into the tissue specimen. The stabilizer holds the tissue specimen as the wire cuts into it. The bag or pouch includes direction-bearing indicia to facilitate viewing of the methods from within the patient's body.

A medical manipulator is provided with: a drive unit provided with a motor; a removable portion that is removably attached to the drive unit and that is provided with a rotating body to be connected to a rotating shaft of the motor; an elongated insertion portion coupled to the removable portion; a distal-end movable part disposed at a distal end of the insertion portion; a wire connecting the rotating body and the distal-end movable part and transferring tension generated by power of the motor to the distal-end movable part to actuate the distal-end movable part; a pressing member that is formed of an elastic material and that presses a longitudinal intermediate position of the wire in the wire diameter direction; and a sensor that is attached to the pressing member and that detects an elastic deformation amount caused in the pressing member according to the tension of the wire.

In embodiments of an obstruction removal device, system, and/or method, an expandable member is configured to be slidably coupled to a guide wire. The expandable member is configured to surround at least a portion of an obstruction captured by a stentriever as the expandable member transitions from the expanded state to the contracted state, i.e., when the guide wire is removed from a vasculature to remove the stentriever and the obstruction from the vasculature. A first locking member is located at a base of the expandable member. The first locking member is configured to engage a second locking member that is located on the guide wire, the stentriever, or an inner surface of a guide catheter, thereby coupling the expandable member to the guide wire, the stentriever, or the inner surface of the guide catheter when the expandable member is deployed within the vasculature.

A neurovascular catheter having an atraumatic navigational tip is disclosed. The catheter includes an elongate flexible tubular body, a distal zone of the tubular body comprising: a tubular inner liner; a helical coil surrounding the inner liner and having a distal end, a tubular jacket surrounding the helical coil, and extending distally beyond the helical coil distal end to terminate in a catheter distal face, and a tubular radiopaque marker embedded in the tubular jacket. The catheter distal face comprises a first section that resides on a first plane which crosses a longitudinal axis of the tubular body at a first angle within the range of from about 35 degrees to about 55 degrees, and a second section that resides on a second plane which crosses the longitudinal axis of the tubular body at a second angle within the range from about 55 degrees to about 90 degrees.

A device for fracturing calcifications in heart valves including an expandable stabilizer and expandable impactor arms assembled on and deployed by a delivery system, wherein the delivery system is operable to move the impactor arms, while in an expanded position, with respect to the stabilizer with sufficient energy so as to fracture a calcification located in tissue which is sandwiched between the stabilizer and the impactor arms.