Balloon catheter apparatus with releasable distal seal and method of operation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 1992
Grant Date -
N/A
app pub date -
Oct 23, 1989
filing date -
Oct 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A balloon catheter apparatus is used in combination with an endoscope having an insertion portion to be inserted in a body cavity. The apparatus comprises a catheter to be connected to a manipulating section, the catheter including an elongated tube through which the insertion portion is inserted, and in which a liquid is fed. The tube includes a balloon capable of being inflated outward in accordance with a liquid pressure in the tube, a first cylindrical portion for connecting the balloon to the manipulating section and defining a liquid path together with the inserted insertion portion, and a second cylindrical portion, which is connected to the balloon, and through which a distal end portion of the insertion portion is caused to protrude outward. The second cylindrical portion is brought into contact with the insertion portion to provide an elastic liquid-tight seal between the second cylindrical portion and the inssertion portion. The seal is released by a liquid pressure in the liquid path which exceeds a predetermined liquid pressure, thereby feeding the liquid in the liquid path outward through the second cylindrical portion.
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Family
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