Embodiments disclosed herein provide devices, systems, and methods for instrument exchanges during ophthalmic surgery. More particularly, the present disclosure relates to valved cannula assemblies and methods of use thereof. A valved cannula assembly includes a cannula having a head at a proximal end of the cannula and a hollow rod extending from the head to a distal end of the cannula. The valved cannula assembly includes a valved hub coupled to the head and including a septum having two or more curved flaps configured to provide an opening for an instrument.

Introducer sheaths are described. In one embodiment, an introducer sheath comprises a sheath hub, a fixed housing coupled to the sheath hub, a rotating element rotatably coupled to the fixed housing, a sheath tube fixedly coupled to the rotating element, and a lock coupled to the rotating element. The lock is capable of preventing the rotating element and the sheath tube from rotating with respect to the sheath hub.

The lighted surgical access system is provided that includes a circumferential retractor and a plastic optical fiber (POF) attached thereto. The circumferential retractor retracts and protects a patient’s body opening while the POF illuminates the internal surgical site, body cavity and/or body opening.

A continuum instrument includes at least one proximal continuum and at least one distal continuum. The proximal continuum comprises a proximal base disk, a first proximal stop disk, a second proximal stop disk, a plurality of proximal structural backbones and a plurality of proximal drive backbones, with proximal ends of the plurality of proximal drive backbones being fixedly connected to the second proximal stop disk, and the plurality of proximal drive backbones passing through the first proximal stop disk and having distal ends fixedly connected to the proximal base disk. The distal continuum comprises a distal stop disk and a plurality of distal structural backbones, the plurality of distal structural backbones being connected to or integrally formed with the plurality of proximal structural backbones, and distal ends of the plurality of distal structural backbones being fixedly connected to the distal stop disk.

A continuum instrument includes: at least one proximal continuum, at least one distal continuum, and a drive connection part. The proximal continuum comprises a proximal stop disk and a plurality of proximal structural backbones, the plurality of proximal structural backbones being fixedly connected to the proximal stop disk. The distal continuum comprises a distal stop disk and a plurality of distal structural backbones, the plurality of distal structural backbones being fixedly connected to the distal stop disk, and the plurality of distal structural backbones being fixedly connected to or integrally formed with the plurality of proximal structural backbones. The drive connection part is connected to the proximal stop disk, and an input end of the drive connection part is for driving the proximal stop disk to turn so as to drive the distal continuum to bend.

A locator of a surgical port of a surgical robot system, the surgical robot system comprising an instrument attached to a robot arm, the instrument having an instrument shaft able to pass through the surgical port to a surgical site, the locator comprising: an interface configured to couple to the surgical port; a mechanism configured to permit relative linear and/or rotational motion of the interface and the instrument shaft; and a controller comprising a processor operable to estimate the position of a part of the robot arm, the controller configured to control the mechanism in dependence on the estimated position of the part of the robot arm such that as the robot arm retracts the instrument from the patient, the locator moves the port away from the robot arm and provides a reaction force to keep the port in place.

A transcatheter temporary valve prosthesis for blood vessel comprising an expandable support structure (5″), a valve (7), a filter (12) and a conveyor (6); said support structure (5″) forming a tubular shape when expanded, with a distal and a proximal end, said valve (7) being located at said distal end and said conveyor (6) extending within said support structure (5), from said proximal to said distal end and including a central passage that is adapted to act as an introducer for other devices.

A method for performing auto-focus in a camera is disclosed. The method includes: receiving, from a tracking system for tracking a position of a medical instrument, a signal; determining, based on the received signal, that the medical instrument is removed from a field of view of the camera; in response to determining that a continuous auto-focus mode for the camera is enabled: retrieving, from a database, a first focus distance value representing a focus distance that was most recently set with intent for the camera; and automatically updating a focus distance of the camera to the first focus distance value.

A fallopian tube access system includes an outer tube assembly including an outer tube and a sleeve extending distally from the outer tube, and an inner tube assembly including an inner tube and an expander extending distally from the inner tube. The inner tube assembly is positioned within the outer tube assembly such that the expander is located within the sleeve in a compressed state. The outer tube assembly is movable relative to the inner tube assembly to expose the expander and transition the expander from the compressed state to an expanded state.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.