Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1988-04-08
1989-01-03
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
604264, 604280, 138115, A61M 500
Patent
active
047954396
ABSTRACT:
An improved multi-lumen catheter having lumens which do not extend in a straight line down the length of the catheter is disclosed. The twisting of the catheter provides that side holes which extend into the lumens of the catheter are not aligned in a straight line. Accordingly, when the catheter is inserted into a patient's vessel, the side holes cannot be aligned in a manner which causes all of the side holes of a particular lumen to be occluded by the wall of the patient's vessel.
A catheter of the type disclosed can be manufactured by an extrusion process in which the catheter is twisted during the extrusion, or by heating a non-twisted catheter and then twisting it in order to impart an appropriate twist therein.
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Edward Weck Incorporated
Lee, Jr. Robert E.
Levinson Lawrence S.
Lewis Ralph
Pellegrino Stephen C.
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