A movement transfer mechanism for a surgical scoping device, wherein a rotational proximal input force is transformed into a longitudinal force that is conveyed down the length of an instrument channel of the scoping device, where it is transformed again into an operational movement of a distal instrument. The operational movement can be rotational movement, but may be any movement that changes the orientation or configuration of the distal instrument. By conveying a linear force along the instrument channel rather than a twisting force, the problems of slipping and discontinuous operation of the distal instrument due to friction between the instrument and the instrument channel can be reduced or eliminated.

An endoscopic snare device (10, 100, 100) includes a pair of bowed, resiliently deformable, snare wires (12, 14) with bow shaped memory, a mesh (20) attached to mid-portions (16, 18) and distal portions (22, 24) of the snare wires (12, 14) for a mesh length (A) that is less than the snare length (L), a bowed, resiliently deformable, support wire (116) extending in a plane out of the plane of the snare wires (12, 14), and a pair of bowed, resiliently deformable, incising wires (112, 114) side by side with the snare wires (12, 14). The support wire (116) is electrically insulated. A mouth cord or wire (46) extends from one snare wire (12), through the support wire (116), and to the other snare wire (14).

A coupling system and related methods are disclosed. The system has a first plug detachably coupled to a first housing, and a first socket detachably coupled to a second housing. The first socket is configured to receive the first plug. The system is movable between a first configuration wherein the first and second housings are not engaged and a second configuration wherein the first and second housings are engaged and the first plug and the first socket are coupled together.

A surgical instrument includes an end effector and a housing mechanically coupled to the end effector. The end effector includes a first actuating device configured to perform a first surgical procedure and a second actuating device integrally associated with the first actuating device and configured to perform a second surgical procedure, the second surgical procedure being independently operable and different than the first surgical procedure. An outer portion of the first actuating device and an outer portion of the second actuating device form a portion of an outer housing of the end effector. The housing includes a first actuator, mechanically coupled to the first actuating device and configured to impart movement to the first actuating device and a second actuator, mechanically coupled to the second actuating device and configured to impart movement to the second actuating device.

An electrosurgical snare may include a conductive distal loop that includes an uninsulated thinner portion and an uninsulated thicker portion. Respective current densities over the outer surfaces of the thinner and thicker portions may cause the uninsulated thinner portion to immediately begin cutting tissue, while the uninsulated thicker portion may initially begin coagulating the tissue.

A medical device and treatment method are configured to form a hole as a passage, which is used for treatment, in biological tissues without puncturing the biological tissue and while reducing the influence on a living body The medical device includes: a shaft portion which is elongated, a pressing portion on a distal side of the shaft portion to press the tissue, and a thrusting portion provided further on the distal side of the shaft portion than the pressing portion and configured to be thrust into a joint portion of the tissue. When pressing the biological tissue using the pressing portion, a direction from the shaft portion to the pressing portion and a direction from the shaft portion to the thrusting portion are different from each other, and the pressing portion can be expanded and contracted in an expansion direction intersecting a shaft center direction of the shaft portion.

A snare may a loop at a distal end of the elongate member and defining an inner area. The loop may have an inner surface facing and exposed in the inner area, wherein a first section of the inner surface has an edge sharper than a second section of the inner surface.

An ophthalmic surgical device in accordance with various embodiments of the present disclosure comprises an elongate element and a filament. The device may further comprise one or more of a shaft, an actuator, an actuator handle, a shaft handle, a vent, and a filament stop. The device may be used to mechanically push objects, as in retinal detachment repair, gasp objects, as in the removal of a dislocated intraocular lens or an intraocular foreign body, aspirate fluid, and cut materials, such as intraocular fragments.

Described here are devices, systems, and methods for closing the left atrial appendage. The methods described here utilize a closure device for closing the left atrial appendage and guides or expandable elements with ablation or abrading elements to ablate or abrade the left atrial appendage. In general, these methods include positioning a balloon at least partially within the atrial appendage, positioning a closure assembly of a closure device around an exterior of the atrial appendage, inflating the balloon, partially closing the closure assembly, ablating the interior tissue of the atrial appendage with the inflated balloon, removing the balloon from the atrial appendage, and closing the atrial appendage with the closure assembly.

The present disclosure provides systems and methods for cutting mucosal tissue. In particular, the present disclosure provides an endoscopic hood with an integrated wire for single-step tissue cutting. The endoscopic hood is particularly useful for performing repeated cutting, for example EMR resections, without the need for assistance by a nurse or medical technician.