minimally invasive surgery
Minimally Invasive Surgery (also known as MIS, minimal access, laparoscopic, or endoscopic surgery) is a major advance in bringing to patients the excellent results of traditional surgical procedures, while eliminating the most physically and emotionally traumatic elements: the pain and lengthy recovery from "open" surgery. Minimally invasive surgery means having a minimum of interference with the patient's normal physiological function. Advances in laparoscopic surgery allow surgeons access to complex patient anatomy through very small incisions instead of the large incisions associated with conventional "open" surgery. Patients experience less pain and shorter recovery times.
Cutting the skin and tissues during surgery to expose a full view of the structures and organs involved in the procedure. Surgeons work under direct visualization with full incision.
A doctor who specializes in treating cancers of the urinary system.
The branch of medicine that deals with the diagnosis and treatment of disorders of the urinary tract or urogenital system.
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benign prostatic hyperplasia (BPH)
A benign (noncancerous) condition in which an overgrowth of prostate tissue pushes against the urethra and the bladder, blocking the flow of urine. Also called benign prostatic hypertrophy.
benign prostatic hypertrophy (BPH)
A benign (noncancerous) condition in which an overgrowth of prostate tissue pushes against the urethra and the bladder, blocking the flow of urine. Also called benign prostatic hyperplasia.
A system of grading prostate cancer. The Gleason grading system assigns a grade to each of the two largest areas of cancer in the tissue samples. Grades range from 1 to 5), with 1 being the least aggressive and 5 the most aggressive. Grade 3 tumors, for example, seldom have metastases, but metastases are common with grade 4 or grade 5. The two grades are then added together to produce a Gleason score. A score of 2 to 4 is considered low grade; 5 through 7, intermediate grade; and 8 through 10, high grade. A tumor with a low Gleason score typically grows slowly enough that it may not pose a significant threat to the patient in his lifetime.
A gland in the male reproductive system just below the bladder. The prostate surrounds part of the urethra, the canal that empties the bladder, and produces a fluid that forms part of semen.
prostate-specific antigen (PSA)
A substance produced by the prostate that may be found in an increased amount in the blood of men who have prostate cancer, benign prostatic hyperplasia, or infection or inflammation of the prostate.
prostate-specific antigen test
A blood test that measures the level of prostate-specific antigen (PSA), a substance produced by the prostate and some other tissues in the body. Increased levels of PSA may be a sign of prostate cancer.
prostatic acid phosphatase (PAP)
An enzyme produced by the prostate. It may be found in increased amounts in men who have prostate cancer.
prostatic intraepithelial neoplasia
PIN. Noncancerous growth of the cells lining the internal and external surfaces of the prostate gland. It is an important sign that prostate cancer may develop.
Inflammation of the prostate gland.
TRUS (Transrectal Ultrasound)
A procedure in which a probe that sends out high-energy sound waves is inserted into the rectum. The sound waves are bounced off internal tissues or organs and make echoes. The echoes form a picture of body tissue called a sonogram. TRUS is used to look for abnormalities in the rectum and nearby structures, including the prostate. Also called endorectal ultrasound.
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The removal of cells or tissues for examination under a microscope. When only a sample of tissue is removed, the procedure is called an incisional biopsy or core biopsy. When an entire lump or suspicious area is removed, the procedure is called an excisional biopsy. When a sample of tissue or fluid is removed with a needle, the procedure is called a needle biopsy or fine-needle aspiration.
A procedure in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor. Also called internal radiation, implant radiation, or interstitial radiation therapy.
The use of drugs, vitamins, or other agents to try to reduce the risk of, or delay the development or recurrence of, cancer.
conformal radiation therapy
A radiation therapy that uses computers to create a 3-dimensional picture of the tumor so that multiple radiation beams can be shaped exactly (conform) to the contour of the treatment area.
laparoscopic radical prostatectomy
Minimally invasive removal of the prostate, using the laparoscope or small surgical camera. Advantages of the laparoscopic approach include improved visualization of the anatomy, reduced blood loss, better preserved anatomical structures, and shorter convalescence.
Relieving or soothing the symptoms of a disease or disorder without effecting a cure.
An operation to remove part or all of the prostate. Radical (or total) prostatectomy is the removal of the entire prostate and some of the tissue around it.
Energy released in the form of particles or electromagnetic waves. Common sources of radiation include radon gas, cosmic rays from outer space, and medical x-rays.
The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy, implant radiation, or brachytherapy). Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that circulates throughout the body. Also called radiotherapy.
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Remote activated or user manipulated motion-control, imaging and communication devices, operated via computer hardware and software to enable physicians to conduct an increasing array of surgical procedures in a minimally invasive manner.
degrees of freedom
Robots are typically capable of movement along a number of axes; these movements can be rotational or translational. The number of axes of movement (degrees of freedom), their arrangement and their sequence of operation, permits movement of the robot to any point within its envelope. Robots have three arm movements (up-down, in-out, side-to-side). In addition, they can have as many as three additional wrist movements on the end of the robot's arm: yaw (side to side), pitch (up and down), and rotational (clockwise).
Tiny computer-enhanced mechanical wrists near the end of the instrument tip that provide all the flexibility of the human wrist and forearm at the operative site, through 1 cm ports.
Haptics (pronounced HAP-tiks) is the science of applying touch (tactile) sensation and control to interaction with computer applications. (The word derives from the Greek haptein meaning "to fasten.") By using special input/output devices (such as joysticks or data gloves), users can receive feedback from computer applications in the form of felt sensations in the hand or other parts of the body. In combination with a visual display, haptics technology can be used to train people for tasks requiring hand-eye coordination, including surgery.
An automatic device that performs functions normally ascribed to humans. More technically, a reprogrammable, multifunctional manipulator designed to move material, parts, tools, or specialized devices through various programmed motions for the performance of a variety of tasks. The word 'robot' was coined by the Czech playwright Karel Capek, from the Czech word for forced labor or serf.
A branch of engineering that involves the conception, design, manufacture, and operation of robots. This field overlaps with electronics, computer science, artificial intelligence, mechatronics, nanotechnology, and bioengineering.
For a machine to qualify as a robot, it usually needs these 5 parts:
> End Effector
A software-based feature of the da Vinci¨ Surgical System that increases surgical precision and fine motor control by: 1) scaling hand movements so that large motions by the surgeon are reduced to micro-movements at the operative site, and 2) eliminating natural hand tremors.
A tiny (1 cm) incision, into which a cannula (hollow, rigid tube) is inserted to act as a conduit for an endoscope or minimally invasive surgical instruments.
Natural operative orientation of the instruments in the visual image is maintained regardless of camera rotation, or position within the body, relative to the instruments. In traditional MIS, as the camera is rotated, surgeons become disoriented since, for example, what was "right" on the screen can be "left" with a 180 degree camera rotation.
Any surgical procedure utilizing a visualization device, such as an endoscope.
The surgeon seated at the console is able to look down into the video display and see a precise 3-D image of the surgical field, with hands and instruments in a natural line of sight ø just as it would appear in open surgery. 3-D visualization that allows eye-hand instrument alignment and coordination promotes maximum immersion at the surgical site, eliminating the spatial disorientation and disconnected hand/eye coordination inherent in current MIS techniques.
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Reprinted with permission, courtesy Intuitive Surgical. Posted: March 22, 2006. Copyright © 2006. All rights reserved. More Info