Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-01-18
1994-12-06
Kruter, Jerome L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
606194, A61M 2900
Patent
active
053706153
ABSTRACT:
An improved balloon catheter is disclosed having both the flexibility of a coaxial construction and the advantages of dual lumen construction as well. The proximal section is of relatively rigid dual lumen construction, wherein an inflation lumen and a guidewire lumen extend longitudinally through the proximal section in a generally parallel and side-by-side relationship. A distal section of the balloon catheter is coupled to the distal end of the proximal section and is of a coaxial construction. Near the transition between the two sections, an inner coaxial member defining the distal guidewire lumen is offset from the center of the otherwise coaxial distal section so that the inner coaxial member is substantially aligned with the distal end of the proximal guidewire lumen. The distal and proximal portions of the guidewire lumen are aligned and heat sealed together at the transition between the dual lumen constructed proximal section and the coaxially constructed distal section of the balloon catheter, to provide a continuous guidewire lumen extending through both sections all the way to a balloon mounted near the distal tip of the distal section. In the dual lumen constructed proximal section, the inflation lumen has a generally crescent-shaped cross section. At the transition region, the proximal inflation lumen narrows somewhat to a circular cross section. The proximal inflation lumen communicates with a substantially annular distal inflation lumen defined between the inner wall of an outer coaxial member and the outer wall of an inner coaxial member in the coaxially constructed distal section.
REFERENCES:
patent: 4758221 (1988-07-01), Jureidini
patent: 4892519 (1990-01-01), Songer et al.
patent: 4988356 (1991-01-01), Crittenden et al.
patent: 5042985 (1991-08-01), Elliot et al.
Design of Machine Elements, M. F. Spotts, Prentice-Hall, Inc., Englewood Cliffs, N.J. 07632, 1985 p. 343.
Cordis Corporation
Kruter Jerome L.
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