Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1985-05-03
1986-07-22
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
128657, A61M 2500
Patent
active
046017054
ABSTRACT:
A catheter or the like is steerable through cavities within a body and aimable toward organs or tissue within the body. The catheter includes an elongated tubular member having a proximal end and a distal end for insertion into the body, a plurality of temperature-activated memory elements in the distal end of the tubular member, and a core for supporting the memory elements. Each memory element assumes a preset shape when heated to a predetermined temperature. A sleeve is provided to couple slidably each memory element to the core so that each memory element is permitted to slip in relation to the core and also to couple each memory element so that movement of one element results in movement of the other elements. Each memory element is moved to another shape when the memory element coupled thereto is heated to the predetermined temperature. A control system adjacent the proximal end of the tubular member allows an operator to control selectively the temperature of each temperature-activated element to deflect the distal end of the tubular member so as to either direct the course of the tubular member or to direct the distal end of the tubular member toward an organ or tissue within the body.
REFERENCES:
patent: 3043309 (1962-07-01), McCarthy
patent: 3605725 (1971-09-01), Bentov
patent: 3674014 (1974-07-01), Tillander
patent: 3729008 (1973-04-01), Berkovits
patent: 3773034 (1973-11-01), Burns et al.
patent: 3890977 (1975-06-01), Wilson
patent: 4146019 (1979-03-01), Bass et al.
patent: 4176662 (1979-12-01), Frazer
Pellegrino Stephen C.
Smith, Jr. Jerome R.
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