Method and devices for viewing one or more valve leaflets via a viewer. In some embodiments the viewer includes a body having a first end and a second end opposite the first end, the first end being closed and having a transparent viewing window, the second end arranged to be attached to an aorta or a pulmonary artery, and one or more ports arranged to provide fluid access to an internal portion of the viewer to pressurize the one or more leaflets. A diameter of the viewing window is larger than an outer diameter of the second end. An outer diameter of the first end of the body is larger than an outer diameter of the second end. The body is a tubular body.

A neurosurgical ultrasonic focusing assisted three-stage atomization cooling and postoperative wound film forming device has a transducer housing and a nozzle, wherein a horn is arranged in the transducer housing, at least two layers of piezoelectric ceramic sheets are arranged at the top of the horn, an electrode sheet connected with an ultrasonic generator is arranged between two adjacent layers of piezoelectric ceramic sheets, the bottom of the transducer housing is of a hemispherical structure, and a plurality of piezoelectric elements connected with the ultrasonic generator are arranged inside the hemispherical structure; and the nozzle is arranged at the bottom of the horn and connected with a medical nanofluid storage cup, compressed gas can also be introduced into the nozzle, and an electrode is also arranged inside the nozzle.

A method is disclosed, including joining a balloon to a resilient inner body of a balloon assist device, the balloon comprising an axial length shorter than an axial length of the inner body; expanding a slit in the resilient inner body of the balloon assist device; inserting a catheter through the slit; and releasing the slit to contract the balloon assist device around the catheter.

Exemplary medical devices may include a snare device. The snare device may include a first leg having a proximalmost end and a second leg having a proximalmost end. The first leg and the second leg may form a distal loop. The proximalmost end of first leg may be independently moveable relative to the proximalmost end of the second leg.

An endoscopic surgery system includes a plurality of staples and an endoscopic applicator having a staple cartridge for loading transversely arranged staples. The staples have a central region and two side limbs and the applicator has a mobile body for holding a staple to be applied, the staple being arranged in a transverse plane, and for ensuring the deformation of same by bending in relation to the axis of symmetry of the staple.

An endoscopic cap assembly may include a sleeve and a cap. The cap may include a cap channel extending along an external surface of the cap. The cap may also include an engagement feature extending radially outwardly from the external surface of the cap.

A rotatable jaw device for use with an endoscope and method of using a rotatable jaw device. The device includes a fork, and two jaws pivotally mounted to the fork. The jaws are movable between a predetermined closed position and a predetermined open position. At least one jaw has at least one protrusion on a surface of the jaw. The at least one protrusion prohibits movement of the two jaws in the opening direction beyond the predetermined open position. One jaw may have an elongated center void defined by twin jaw extensions, and the other jaw may rotate within the elongated center void when the two jaws move toward the predetermined closed position.

A surgical instrument, such as a surgical fastener applying apparatus, includes a tool assembly, an endoscopic body portion, and an articulation mechanism. The articulation mechanism articulates the tool assembly in relation to the endoscopic body portion over large arc segments while providing simple operating components. Thus, the range of operation of the surgical instrument and the types of surgical activities that can be performed by the surgeon can be expanded without at the same time requiring complex operating components.

An endoscopic surgical device that can suitably puncture a body wall with an overtube that having two insertion passages is provided. In a case where a body wall is punctured with the overtube that has two insertion passages through which medical instruments are inserted and that has openings of the insertion passages in a distal end surface, distal end parts of two needle parts of an inner needle are disposed to protrude from the openings in a case where the inner needle is mounted. Accordingly, a distal end portion of the overtube has a tapered shape, cutting blade parts are disposed in the same straight line as seen from a distal end side, and an insertion load is reduced.

A cover (1) for a shaft of a medical scoping device comprises tubular member (2) arranged for application on the distal tip of the medical scoping device. The cover (1) comprises a plurality of projecting elements (3) spaced apart circumferentially around the tubular member (2), each projecting element having a base portion (13) and an arm portion. The projecting elements are pivotably mounted on the tubular member about a pivot axis. The base portion (13) comprises a detent (20), and the tubular member comprises a contact region, for example a protuberance (23), said contact region being located such that pivoting movement of the projecting element for moving the arm portion in a distal direction can effect impacting of the detent (20) on the contact region (23).