Da Vinci
Overview
The Da Vinci Surgical Robotic System is a major innovation in robot-assisted surgery, developed in 1997 by NASA and Stanford researchers. The first robotic cholecystectomy was performed that year, and after FDA approval in 2000, it was widely adopted in cardiovascular, urologic, general, and gynecologic surgeries.
Built on laparoscopic surgery principles, Da Vinci allows precise procedures through small incisions. The surgeon operates from a console while robotic arms replicate movements via thin surgical ports, assisted by another surgeon at the patient’s side.
Usage Areas
Robot-assisted Surgery in Urology
Urology is among departments where surgical robotics is commonly used. Surgeons prefer da Vinci for many urologic surgeries, especially radical prostatectomy (removal of prostate gland).
Urologic Operations performed with da Vinci:
- Robot-assisted Prostate Cancer Surgery
- Robot-assisted Renal Cancer Surgery
- Robot-assisted Pyeloplasty – Surgery for Stenotic Ureteropelvic Junction
- Other operations
Robot-assisted Surgery in Cardiovascular Surgery
Cardiovascular surgery techniques are considered, when modifications of life style and other treatment modalities do not result in recovery.
Cardiovascular surgery is among surgical areas, where surgical robotics is very commonly and widely used. The most common ones of these surgeries include: repair of mitral valve; coronary artery bypass grafting (especially for coronary arteries located on the ventral surface); rhythm disorders; repair of heart valves; correction of holes; and problems in right and left atria.
Robotic-assisted Surgery in General Surgery
Surgical robotics is used in general surgery for a wide range of operations.
- Robotic-assisted colorectal surgery
Da Vinci can be used for surgical management of many colorectal diseases, especially including colorectal cancers, diverticula and inflammatory bowel disease. In rectal surgery, it ensures protection of the nerves located nearby the surgical site.
- Robotic-assisted obesity surgery
Gastric bypass gets the first rank among obesity surgeries performed with da Vinci. This technique aims reduced volume of stomach along with bypassing a part of intestines in order to decrease absorption of nutrients.
Robotic-assisted Surgery in Gynecology
In gynecologic surgery, “da Vinci” can be used for cancer surgeries, removal of uterus (hysterectomy) and excision of large myomas.
Robotic-assisted surgery is most commonly used for following conditions in gynecology; endometrial and cervical cancers; hysterectomy (removal of uterus); removal of large and multiple myomas (myomectomy); sacrocolpohysteropexy (sling surgery for prolapsed vagina or uterus); and Fallopian tube (a canal lying between ovaries and uterus) surgery.
Robotic-assisted Surgery in ENT
Today, da Vinci can also be used for otorhinolaryngologic surgeries. The technique is called Transoral Robotic Surgery (TORS) that aims excision of benign or malignant tumors, which begin in mouth cavity, larynx, tongue and tonsils.
Robotic-assisted surgical technique allows transoral approach – the native entry hole of the body – and thus, no incision is required. Robotic-assisted surgery technique enables surgeons carry out operations in this sensitive and narrow area, where numerous nerves and blood vessels are located, thanks to magnified images and surgical instruments with advanced movement skills.
For otorhinolaryngologic procedures carried out with da Vinci, 2 thin arms and a camera are used rather than 4 arms used in other surgical procedures. Laser headpieces can, sometimes, be attached to these arms, when required.
Robotic Surgery in Thyroid Diseases
The incisions made for operating on the thyroid gland with two lobes located at both sides of the trachea can be cosmetically unpleasant for some people.
The only prerequisite for this surgery is body mass index (weight divided by the square of height) below 30.
da Vinci allows surgeons access to the thyroid gland in the neck through the armpit and many thyroid surgeries can be performed with surgical robotics, excluding severe goiters. Since the incision is made in the armpit, no incision scar is seen on the neck of these patients.
In robotic-assisted thyroid surgeries, absence of incision on the neck eliminates the cosmetic concerns, but the risk of laryngeal nerve injury can also be prevented.
How to Apply?
Three Dimensional Camera
Da Vinci robotic surgical system has two cameras, each transmitting images to eyes separately. Thus, the surgeon uses the console to perform the surgery on a three dimensional image that is quite similar to eyesight. Moreover, these cameras can magnify the surgical site by 10 to 12 times.
Surgical Instruments
Instruments equipped on arms of the surgical robotics system can be defined as small instruments that can freely move in 7 steps. These instruments can rotate around their own axis by 540 degrees (imagine that your wrist twists around itself approximately twice) thanks a system called “endowrist” and they may mimic movements of human wrist. Surgical procedures can be performed even in very narrow and deep locations with these instruments.
The “tremor scaling” feature of the surgical robotics system senses potential tremors of the surgeon and does not transmit them to the instruments. Moreover, these instruments do not operate out of the control of the surgeon.
Surgeon Console
In surgical robotics system, the surgeon sits before the console while performing the surgery. The surgical site can be seen on a three-dimensional image; commands are sent using the camera and other instruments with hands and feet. These commands are real time translated into a movement. The surgeon sits on a chair while performing the operation.
Robot-assisted surgery is performed using thin tubes, called “port, " similar to those used in laparoscopic surgery. One arm holds the camera, while other arms use the surgical instruments. Another surgeon who stays nearby the patient helps the surgeon who uses the console.
Three Dimensional Image
The images created by the robotic system enables carrying out surgical procedures at the surgical site on a three dimensional image. Since the camera is controlled by the surgeon, images of deep and narrow anatomic structures can be magnified. Intraoperative injuries can be minimized.
Movement Capability in Robotic Surgery
The instruments held by arms of the surgical robotic system may rotate by 180 degrees at all directions, similar to a human wrist. These instruments can be flexed and extended far beyond the movement ranges of a human wrist and they may rotate by 540 degrees. Thus, most body parts (especially narrow and small locations) can be accessed and operated on.
Tremor is Eliminated
There is more or less physiological tremor in human hand, but the sensitive movement capability of robotic arms can eliminate the tremor. Thus, errors secondary to human factor can be minimized for surgeries at high-risk body parts.
Physical Conditions in Surgery
Surgeons usually stand up while performing the surgeries, but it may be difficult to stand up for prolonged periods of time in long lasting surgical procedures. In robotic-assisted surgery, the surgeon sits and performs the surgery over the console. Meanwhile, the stress secondary to physical tiredness is reduced, while the surgeon can focus on the surgical site better.
Robotic-Assisted Surgery in Obese Patients
Too much adipose tissue in obese patients may make the surgeries difficult. Robotic surgery system is widely used in many fields of medicine, ranging from urology and cardiology to gynecology and general surgery; numerous operations can be performed even in morbid obese patients.
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