Sinusitis and other disorders of the ear, nose and throat are diagnosed and/or treated using minimally invasive approaches with flexible or rigid instruments. Various methods and devices are used for remodeling or changing the shape, size or configuration of a sinus ostium or duct or other anatomical structure in the ear, nose or throat; implanting a device, cells or tissues; removing matter from the ear, nose or throat; delivering diagnostic or therapeutic substances or performing other diagnostic or therapeutic procedures. Introducing devices (e.g., guide catheters, tubes, guidewires, elongate probes, other elongate members) may be used to facilitate insertion of working devices (e.g. catheters e.g. balloon catheters, guidewires, tissue cutting or remodeling devices, devices for implanting elements like stents, electrosurgical devices, energy emitting devices, devices for delivering diagnostic or therapeutic agents, substance delivery implants, scopes etc.) into the paranasal sinuses or other structures in the ear, nose or throat.

Devices for assisting with the functioning of a tricuspid valve of a heart include a shaft, a flow optimizer, and an anchoring mechanism. A tilting mechanism can be configured to tilt the shaft relative to a central axis of the anchoring mechanism. Leaflets (e.g., multi-layer leaflets) of the flow optimizer can include a membrane and a rim, and the rim can have a higher stiffness than the membrane. A delivery system can be configured to deliver the device and adjust the position of the flow optimizer with respect to the anchoring mechanism.

The disclosure relates to cannulae, delivery systems, methods of making cannulae, and methods of making delivery systems. A delivery system comprises an elongate outer tubular member defining an outer tubular member lumen, a cannula having a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, and an intraluminal medical device disposed within the outer tubular member lumen distal to the cannula and not about the cannula. A pattern of openings arranged in an interrupted spiral extends circumferentially along the cannula.

Guide extension catheters and related methods are disclosed. A guide extension catheter can comprise an elongate tube member, a push member, and an external manipulation member. The push member can be eccentrically coupled relative to the tube member and extend proximally therefrom for slidably positioning the tube member within and partially beyond a distal end of a guide catheter. The manipulation member can be coupled to a proximal end of the push member, where the manipulation member can be configured to secure the guide extension catheter in place during use by attaching to an external object such that the tube member and push member remain stationary without user engagement.

A catheter device having a distal tube portion having a longitudinal axis and a tube wall comprising at least one side port; and a guide tip mounted on the distal tube portion, the guide tip defining: a unitary body having an outer wall, and a plurality of indentations in the outer wall, wherein the indentations are oriented substantially parallel to the longitudinal axis, and wherein each indentation extends from a distal-most end of the guide tip to a proximal region of the guide tip.

A medical probe includes a shaft for navigation in a patient body, and first and second deflection mechanisms. The shaft ends with a flexible section and a spring, followed by a rigid distal tip having one or more medical devices coupled thereto. The first deflection mechanism is configured to deflect the flexible section relative to the shaft. The second deflection mechanism is configured to deflect the distal tip relative to the first flexible section by using the spring.

The present disclosure includes devices, systems, and methods for reducing signal noise in endoscopic rotational imaging. Many embodiments include an elongate member that includes an impedance matching network disposed between a proximal imaging core and a distal imaging core. In many such embodiments, the elongate member may connect a controller at the proximal end and include a rotational transducer at the distal end. In various embodiments, the proximal and distal imaging cores may include a plurality of insulated conductors disposed within a shield (e.g., a shielded twisted pair (STP)). In various such embodiments, the insulated conductors may be utilized to communicate differential signals between the controller and the rotational imaging transducer. In some embodiments, the insulated conductors in the proximal imaging core may have a larger diameter than the insulated conductors in the distal imaging core.

A steering catheter includes an elongate shaft with an actively steerable distal part. An internal pull wire and an external pullwire extend through the shaft. The shaft has a first position in which the elongate shaft is generally straight and the external pullwire extends along the exterior of the distal portion of the shaft, a second position in which the shaft is curved and in which the external pullwire extends along the exterior of the distal portion of the shaft, and a third position in which the shaft is curved and in which the external pullwire extends laterally between laterally adjacent portions of the distal portion of the shaft, wherein the external pull wire locks the shaft in the curved position.

The disclosure of this application relates generally to medical devices and in particular to a steerable medical instrument applicable to guide interventional tools and instruments, such as percutaneous biopsy and ablations tools and endoscopes. The steerable medical instrument has an outer and an inner tube where the inner tube is movable at the proximal end and fixed at the distal end. At least one of the outer tube and inner tube has a plurality of openings, which creates deformable portions so that the outer and the inner tubes can bend by moving the inner tube at the proximal end.

A surgical tool comprises a pair of opposing jaws moveable relative to each other between a closed position and first and second open positions. The opposing jaws remain substantially parallel to one another when moving between the closed position and the first open position and remain non-parallel to one another when moving between the first open position and the second open position.