A cannula system and method for accessing a blood mass in the brain. The system comprises a cannula with a camera mounted on the proximal end of the cannula with a view into the cannula lumen and the surgical field below the lumen. A prism, reflector or other suitable optical element is oriented between the camera and the lumen of the cannula to afford the camera a view into the cannula while minimizing obstruction of the lumen. The system may also include an obturator with a small diameter shaft and a large diameter tip which is optically transmissive, so that a surgeon inserting or manipulating the assembly can easily see that the obturator tip is near brain tissue (which is white) or blood (which is red).

A pacemaker lead for cerclage pacing includes a lead fixing part including a fixing tip whose diameter becomes gradually smaller toward an end of a distal part thereof, a plurality of bipolar electrodes that come into close contact with heart muscle, in an outer circumference of the lead fixing part, and a guide wire insertion through hole through which a guide wire can be inserted thereinto, a lead body part configured to be extended to the lead fixing part, having a stylet insertion through hole formed therein, and a body fixing part formed in a bent shape so as to be fixed to an inner wall of the coronary sinus, and a stylet inserted into the stylet insertion through hole, enabling the pacemaker lead for cerclage pacing to be easily moved within the body of the patient.

The present invention concerns several fusion devices and methods for laterally inserting a fusion device at an initial trajectory that is not parallel to the disc space. Each fusion device incorporates components that enable flexing, bending or pivoting of the device during its final approach to the prepared disc space.

Systems and methods for assembling an illuminated infusion cannula involving an optical fiber support assembly with an optical fiber support tube and a positioning insert that couples within a cannula and that can position an optical fiber in the tip of the cannula while supporting substantially laminar and minimally-restricted fluid flow through the cannula.

Systems and methods for tissue containment and retrieval are disclosed. The containment system includes a primary chamber interconnected with a secondary channel extending from the primary chamber. A tissue specimen is mobilized inside a body cavity and placed into the primary chamber through a first opening. The first opening is pulled through a first incision or orifice and the narrower secondary channel is placed at a second incision or orifice. A second opening at the end of the secondary channel permits observation via a scope inserted through the second opening of the tissue specimen in the primary chamber undergoing morcellation via the first opening. Other systems and methods for deployment, containment, debulking and sealing of the second opening to create a closed system for the safe retrieval of the tissue specimen are provided.

The tissue removal containment system is provided that includes a tissue removal and/or containment bag arranged to be inserted through an opening into a confined space. The bag has a support or ring having a compressed, partially compressed and/or uncompressed state or position. The bag can also include an enclosure or film defining the enclosure connected to the support with the enclosure having a confined state and a deployed or unconfined state.

Automatic dilator devices for generating minimally invasive access apertures for surgical procedures or endoscopic surveillance. The automatic dilators comprise a number of spreader tubes nested one inside the other. The devices deploy automatically by means of coupled mechanical mechanisms which insert one spreader after the other distally into the patient's tissue. Each spreader moves distally into the tissue by means of a screwing action, by which rotation is converted into linear motion of the neighboring spreader, immediately external to it, by means of interaction between a helical thread form on a surface of a spreader being engaged by a section of thread, or by one or more protrusions on the opposing face of the next spreader external to the rotating spreader. Such a combination of helical thread and follower enables a rotatory mechanism to be used to deploy one nested spreader tube after the other, by continuous rotary motion.

An intervertebral fusion device comprising inferior and superior fusion cage devices that provide an ability to correct spondylolisthesis via in-situ adjustment.

Various aspects describe a lead delivery system for percutaneous introduction of a lead to a stimulation site near a neural target, such as the vagus nerve for nerve stimulation. The lead delivery system may include a needle assembly having a needle adapted to cut through tissue and provide initial access into the carotid sheath. The needle may be retracted into the lead delivery system to prevent cutting structures in the carotid sheath. The lead delivery system may also include a dilator assembly having one or more dilators to dilate a path to the stimulation site. The lead delivery system may further comprise a dilator assembly including a retractable needle adapted to cut through tissue. One or more locating elements, alternatively or in addition to one or more imaging elements, may be used on individual components of the lead delivery system for enhanced trackability and locatability within the body.

The disclosure relates to medical devices comprising coaxial cannulae. A medical device includes an outer cannula and a coaxial inner cannula that is secure to the inner cannula. The circumferential wall of one of the cannulae defines a pattern of openings that extends along a spiral path about the lengthwise axis of the cannula.