A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/126
A61M 23/00 (2006.01)
Patent
CA 1186581
BALLOON CATHETER ABSTRACT Disclosed is an embolectomy catheter for insertion in a vascular passage, the catheter adapted to be pulled through the vascular passage to remove material therefrom. The catheter comprises an elongated support member having a diameter sized to fit within the body passage and a distal end, the support member including an elongated coil spring and an extensible tubular sheath disposed around the coil spring. A strain relief collar has a first end securely affixed to the distal end of the support member and has a second end, the strain relief collar being movable between a rest position and an extended position. An inflatable balloon sized to fit within the body passage has an end securely affixed to the strain relief collar, the balloon having a lower inflation pressure than the strain relief collar such that for inflation pressures less than a first value the balloon inflates but the strain relief collar remains in its rest position, and that for inflation pressures greater than a second value, no less than the first value, the strain relief collar moves to its extended position in order to receive fluid from the balloon to increase the length and reduce the diameter of the balloon.
452928
Bazell Seymour
Goldberg Edward M.
Meredith & Finlayson
Uresil Company
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