Device for dilating the urethra of the body of a patient and device for removing prostate tissue

Device for removing an enlarged portion of a prostate tissue of a prostate of the body of a patient, the device being inserted into the prostate, through an urogenital system of the body of the patient, the device comprising:

• a plurality of rotatable arms, said rotatable arms being in a first configuration, while said device is being inserted into said prostate,
• wherein rotatable arms of every second configuration adjacent arms pair of said rotatable arms rotatably move from said first configuration toward a second configuration, over respective regions of said enlarged portion,
• wherein one of said rotatable arms of a respective one of a first configuration adjacent arms pair, belongs to a respective one of said second configuration adjacent arms pair, another one of said rotatable arms of said respective first configuration adjacent arms pair, belongs to another one of said second configuration adjacent arms pair, said respective second configuration adjacent arms pair, is adjacent to said other second configuration adjacent arms pair,
• wherein rotatable arm ends of rotatable arms of every one of said second configuration adjacent arms pair, are coupled together by a respective closed loop wire of a plurality of closed wire loops,
• wherein each of said closed loop wires is made of a shape memory alloy,
• wherein adjacent ones of said closed loop wires are coupled together at a pair of coupling points,
• wherein two extreme ones of said closed loop wires are coupled together at respective ones of said pair of coupling points, to form a closed loop assembly of rotatable arms,
• wherein rotatable arms of said first configuration adjacent arms pair, are close to one another, and rotatable arms of said second configuration adjacent arms pair, are away from one another, when each of said closed loop wires is at a first temperature, and when said rotatable arms are in said first configuration, and
• wherein rotatable arms of said second configuration adjacent arms pair, rotatably move toward one another, about a longitudinal axis of said closed loop assembly of rotatable arms, when each of said closed loop wires is at a second temperature, and when said rotatable arms are in said second configuration.