A system for manipulating a guide catheter within a patient's nasal passages or sinus cavities includes a guide catheter formed from an elongate flexible member having a lumen passing there through. A wire guide is slidably disposed within the lumen of the guide catheter. The system further includes a steering member fixedly secured to a proximal end of the wire guide and a proximal hub secured to a proximal end of the guide catheter. The system further includes a recessed handle having a first recess for fixedly receiving the proximal hub of the guide catheter and a second recess for receiving the steering member, the second recess being dimensioned to permit axial and rotational movement of the steering member while disposed in the second recess.

Methods and apparatus for treating disorders of the ear, nose, throat or paranasal sinuses, including methods and apparatus for dilating ostia, passageways and other anatomical structures, endoscopic methods and apparatus for endoscopic visualization of structures within the ear, nose, throat or paranasal sinuses, navigation devices for use in conjunction with image guidance or navigation system and hand held devices having pistol type grips and other handpieces.

The present invention provides a medical device that may include a catheter body having proximal and distal portions, a fluid injection lumen disposed within elongate body, and a guidewire lumen disposed within the elongate body. A tip portion defining a cavity in fluid communication with the fluid injection lumen may be coupled to the distal end of the guidewire lumen, and an expandable element may be coupled to the distal portion of the catheter body and to the tip portion, such that the expandable element is in fluid communication with the fluid injection lumen. A shaping element may at least partially surround the expandable element, where the shaping element is configurable in a first geometric configuration and a second geometric configuration.

A dilation catheter system includes a body and a shaft assembly. The shaft assembly extends passed a distal end of the body. The shaft assembly includes a fixed guide member, a catheter shaft, a dilator, a removable guide member, and a guidewire. The fixed guide member is fixed relative to the body. The dilator is fixed to the catheter shaft. The catheter shaft is operable to expand the dilator. The removable guide member is operable to selectively attach to the body. The catheter shaft is slidably disposed along the removable guide member such that the catheter shaft is configured to translate along the removable guide member. The guidewire is slidably disposed within the removable guide member.

A balloon valvuloplasty catheter may include an elongate shaft having a guidewire lumen and a device lumen extending longitudinally therein, an expandable balloon secured to a distal portion of the elongate shaft, and an intravascular ultrasound catheter slidably disposed within the device lumen. The device lumen is in fluid communication with an interior of the expandable balloon. A method of preparing a native aortic heart valve of a patient's heart for transcatheter aortic valve replacement may include using the balloon valvuloplasty to observe via intravascular ultrasound and evaluate a position of the native leaflets relative to the left and right coronary artery ostia to determine if the native leaflets block the left coronary artery ostium and/or the right coronary artery ostium when the expandable balloon is inflated.

A dilator assembly comprising an elongated body having a proximal end and a distal end, a first lumen extending along the body, a second lumen extending along the body so that it is a parallel to the first lumen, and a joint lumen disposed adjacent the distal end of the body, wherein both the first lumen and second lumen are in fluid communication with the joint lumen. A guidewire has a first end and a second end, and the first end of the guidewire is slidably received in the first lumen and the second end of the guidewire is slidably received in the second lumen.

Some implementations of the disclosure are directed to a balloon dilator system, including: a balloon pump hand piece configured to pump pressurized fluid through a flexible tube to inflate an inflatable balloon, the balloon pump hand piece comprising: an attachment mechanism for removably coupling the balloon pump hand piece to a proximal end of an endoscope; the flexible tube, wherein the flexible tube is configured to be in fluid communication with the balloon pump hand piece at a first end of the flexible tube, and the inflatable balloon at a second end of the flexible tube; a hollow inner cannula; and the inflatable balloon, wherein the inflatable balloon is external to and circumferentially attached to the hollow inner cannula between the proximal end of the hollow inner cannula and the distal end of the hollow inner cannula.

Improved methods and devices for performing an endoscopic surgery are provided. Systems are taught for operatively treating gastrointestinal disorders endoscopically in a stable, yet dynamic operative environment, and in a minimally-invasive manner. Such systems include, for example, an endoscopic surgical suite. The surgical suite can have a reversibly-expandable retractor that expands to provide a stable, operative environment within a subject. The expansion can be asymmetric around a stabilizer subsystem to maximize space for a tool and an endoscope to each be maneuvered independently to visualize a target tissue and treat the target tissue from outside the patient in a minimally invasive manner.

A medical tool includes a rotatable hollow tube and one or more electrical wires. The rotatable hollow tube is defining a working channel therein for insertion of a medical instrument into a cavity of a patient body. The one or more electrical wires traverse the working channel for exchanging electrical signals with one or more electronic devices located at a distal end of the rotatable hollow tube. The working channel has a non-circular cross section for passing both the medical instrument and the one or more electrical wires, and for allowing rotation of the rotatable hollow tube relative to the medical instrument located inside the working channel in the presence of the one or more electrical wires.

Exemplary embodiments of devices and method for affecting at least one anatomical tissue can be provided. A configuration can be provided that includes a structure which is expandable (i) having and/or (ii) forming at least one opening or a working space through which the anatomical tissue(s) is placed in the structure. For example, the structure, prior to being expanding, can have at least one partially rigid portion. In addition, or as an alternative, upon a partial or complete expansion thereof, the structure can be controllable to have a plurality of shapes. Further, the structure can be controllable to provide the working space with multiple shapes and/or multiple sizes.