Wednesday, September 7, 2011

Da Vinci surgical system

The Da Vinci Surgical System is a robotic surgical system made by Intuitive Surgical and designed to facilitate complex surgery using a minimally invasive approach. The system is controlled by a surgeon from a console. It is commonly used for prostatectomies and increasingly for cardiac valve repair and gynecologic surgical procedures.


The da Vinci System consists of a surgeon’s console that is typically in the same room as the patient and a patient-side cart with four interactive robotic arms controlled from the console. Three of the arms are for tools that hold objects, act as a scalpel, scissors, bovie, or unipolar or dipolar electrocautery instruments. The fourth arm is for an endoscopic camera with two lenses that gives the surgeon full stereoscopic vision from the console. The surgeon sits at the console and looks through two eye holes at a 3-D image of the procedure, meanwhile maneuvering the arms with two foot pedals and two hand controllers. The da Vinci System scales, filters and translates the surgeon's hand movements into more precise micro-movements of the instruments,
which operate through small incisions in the body.

According to the manufacturer, the da Vinci System is called "da Vinci" in part "because Leonardo da Vinci invented the first robot", and also because he used anatomical accuracy and three-dimensional details to bring his works to life.

By providing surgeons with superior visualization, enhanced dexterity, greater precision and ergonomic comfort, the da Vinci Surgical System makes it possible for more surgeons to perform minimally invasive procedures involving complex dissection or reconstruction. For the patient, a da Vinci procedure can offer all the potential benefits of a minimally invasive procedure, including less pain, less blood loss and less need for blood transfusions. Moreover, the da Vinci System can enable a shorter hospital stay, a quicker recovery and faster return to normal daily activities.

Although the general term "robotic surgery" is often used to refer to the technology, this term can give the impression that the robot (the da Vinci System) is performing the surgery. In contrast, the current da Vinci Surgical System cannot—in any manner—run on its own. This is due to the fact it was not designed as an autonomous system and lacks a decision making software, instead it relies on a human operator for all input, however all the functionality—including vision and motor functions—are performed through remote human-computer interaction and thus with the appropriate weak AI software the system could in principle perform partially or completely autonomously. The difficulty with creating an autonomous system of this kind is not trivial, a major obstacle is that surgery per se is not readily formalizable—a requirement for weak AI. The current system is designed to merely seamlessly replicate the movement of the surgeon's hands with the tips of micro-instruments, not to make decisions or move without the surgeon’s direct input.

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