MEDICAL DEVICE AND MEDICAL ASSEMBLY

摘要

PROBLEM TO BE SOLVED: To provide a medical device capable of puncturing a puncture part in an appropriate puncture target position with low invasion according to a patient's symptom.SOLUTION: A medical device 2 includes: long-sized and flexible body parts 10, 20, and 30 configured so as to be inserted in a living body cavity; a first expansion part 11 provided at the tip side of the body parts and capable of being expanded and contracted; a second expansion part 32 provided on a base end side of the body parts as compared to the first expansion part 11, capable of being expanded and contracted, and configured so that the distance between the first expansion part 11 and itself is variable; and a guide part 50 for guiding a puncture part 3 that can be punctured in a biological tissue to a puncture target region P1 of a body cavity located between the first expansion part 11 that is expanded and deformed, and the second expansion part 32 that is expanded and deformed.SELECTED DRAWING: Figure 1