Systems and methods for transferring fluid to or from a subject use a set of MRI compatible components that can aspirate intrabody structure and/or fluids. The components include a device guide, a semi-rigid guide sheath configured to slidably extend through the device guide, a stylet releasable coupled to the guide sheath and extending a fixed distance out of a distal end thereof, and a cannula coupled to flexible tubing that is releasably interchangeably held in the guide sheath in lieu of the stylet.

A system for aspirating thrombus and delivering an agent includes an aspiration catheter having a supply lumen having a proximal end, a distal end, and a wall, and an aspiration lumen having a proximal end, an open distal end, and an interior wall surface adjacent the open distal end, and at least one orifice at or adjacent the distal end of the supply lumen, in fluid communication with the aspiration lumen and located proximally of the open distal end of the aspiration lumen, wherein the at least one orifice is configured to create a spray pattern that is caused to impinge on the interior wall surface of the aspiration lumen such that the spray pattern upon impinging on the interior wall surface is caused to transform into at least a substantially distally-oriented flow capable of exiting the open distal end of the aspiration lumen.

Systems and methods are provided in which local tissue diagnostic measurements are correlated with archival local tissue diagnostic data from prior tissue analyses to supplement diagnostic measurements with tissue analysis data from prior tissue analyses having similar local tissue diagnostic data. The tissue analysis data may include information such as pathology data, outcome data, and diagnosis data. The archived local tissue diagnostic data and the tissue analysis data may be stored in a database, and employed for a wide variety of methods, involving preoperative, intraoperative, and/or postoperative phases of a medical procedure. Methods and systems are also provided for displaying, on a medical image shown in a user interface, hyperlinked reference markers associated with tissue analyses, where the reference markers are shown at locations corresponding to local tissue analyses, and where associated diagnostic data and/or tissue analysis may be viewed by selecting a given reference marker.

A delicate tissue retraction system having a retractor, an introducer and a clamp mechanism. The retractor has a hollow retractor passage extending along a longitudinal axis from a proximal retractor end to a distal retractor end. The introducer has an introducer channel extending from a proximal introducer end to a distal introducer end. The introducer is configured to be removably installed within the retractor such that the proximal introducer end and distal introducer end are located along the longitudinal axis and the distal introducer end extends beyond the distal retractor end. The clamp mechanism is located on the introducer and includes a clamp axially aligned with the introducer channel, and control member configured to move the clamp between an open position and a closed position. The clamp may be used to hold a navigation probe inside the introducer, and a registration indicator may confirm the proper installation of the probe.

A patient reference device is provided for use during a medical procedure. The patient reference device includes a housing having a back side and a front side, at least three tracking markers attached to the front side of the housing, the housing extending around the at least three tracking markers and beyond a horizontal plane defined by tops of the at least three tracking markers, the housing terminating at a substantially continuous edge, and a sterile cover attached to the substantially continuous edge of the housing for covering the housing and the tracking markers.

Disclosed are a channel device for surgery and a trigger structure. It aims at improving the problem that the operational efficiency of existing channel devices for surgery is not high. The channel device for surgery includes: a binding cord configured to be wound around a metal net; and a binding wire configured to pass through the binding cord and tighten up the binding cord, so as to compress the metal net, or configured to be pulled away from the binding cord, so as to loosen the binding cord and the metal net. In the trigger structure, different first locking portions are configured to cooperate with a first engaging portion, so as to drive the trolley to slide intermittently relative to the handle, such that a second engaging portion cooperates with different second locking portions, hereby locking the sliding trolley in different positions on the handle.

A head restraining device is provided for securing a patient's head to a bed. The head restraining device has a frame, a lower compliant support strap, and an upper compliant support strap. The frame has a first anchor assembly, a second anchor assembly, and a connecting mechanism for connecting the frame to the bed. The compliant support straps have a first end and a second end and support a portion of the patient's head. The first end of the upper compliant support strap and the first end of the lower compliant support strap are securable by the first anchor assembly and the second end of the upper compliant support strap and the second end of the lower compliant support strap are securable by the second anchor assembly. The head restraining device may be used for any surgical procedure where head fixation is needed.

A method of inserting an electrode into a cranial cavity of a cranium can include determining a length, between a target within the cranial cavity and a proximal end of a multipiece cannula, of the electrode for insertion of the electrode to the target. A distal end of the electrode can be inserted through a multipiece cannula supported by an instrument holder of a surgical arm. The surgical arm can be positioned such that a distance from the target to the proximal end of the cannula is equal to the length. The electrode can be fed through the cannula and through the anchor bolt into the cranial cavity. Feeding of the electrode through the cannula and into the cranial cavity can be stopped when the length of the electrode fed into the cavity reaches the length between the proximal opening of the multipiece cannula and the target.

A surgical access assembly is disclosed. The surgical access assembly comprises an outer sheath and an obturator. The outer sheath is defined by an open distal end and an open proximal end and includes a hollow body portion therebetween. The obturator is defined by a distal end and a proximal end and the distal end further comprises a tapered distal tip member that terminates in a closed radiused distal tip. The obturator is configured to be received within the outer sheath such that the tapered distal tip member protrudes from the open distal end of the outer sheath when the obturator is in an introducing configuration.

A trajectory guidance alignment system configurable to receive input data from an image, interactively track at least one user position, interactively track a tool position, automatically generate output data by way of data transformation using at least one of the input data, the user position data, and the tool position data, and transmit the output data to the display of a navigation system for rendering a real-time interactive navigation view corresponding to a surgical view for facilitating navigation of a medical procedure.