Rotary atherectomy or thrombectomy device with centrifugal transversal expansion
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United States of America Patent
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Dec 27, 1994
Issued Date -
N/A
app pub date -
May 5, 1994
filing date -
Dec 23, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The atherectomy or thrombectomy device according to the invention comprises a rotary member composed of flexible filiform elements, which are joined by their two ends, the distal end and the proximal end; it contains no mechanical means for bringing said ends closer and the speed of rotation of the rotary member is sufficient, notably higher than 30,000 rays/min. to achieve the transversal expansion of the filiform elements under the effect of the centrifugal force. Preferably, the rotary member is constituted by a conduit, such as a conduit in polytetrafluoroethylene provided with one or two sets of longitudinal slits symmetricaly distributed over its periphery and defining flexible strips.
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