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US 5,232,444 AGranted
Dilatation catheter
OwnerHansjorg Just, Ulrich Solzbachinventors
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OwnerHansjorg Just, Ulrich Solzbachinventors
Estimating the term…
A catheter for dispensing medication into a body passage or cavity has a hollow shaft and an elongated, inflatable and deflatable member at one end of the shaft. The shaft functions to permit inflation and deflation of the elongated member. The elongated member, which serves as a carrier for the medication, has an intermediate portion centrally located between the ends of the elongated member and a lateral portion on either side of the intermediate portion. Each of the lateral portions extends from the intermediate portion to a respective end of the elongated member. The intermediate portion is perforate to permit the medication to be forced out of the elongated member and into a body passage or cavity when the elongated member is subjected to pressure during inflation. The lateral portions are imperforate so that they can serve as seals upon coming into contact with body tissue as the elongated member is inflated.
A catheter for treating a body passage or cavity, particularly for treating stenoses in blood vessels, comprising an inflatable and deflatable member having a pair of spaced lateral portions which include opposed ends of said member, and an intermediate portion between said lateral portions, said member further having an external peripheral surface which includes a sealing section at each of said lateral portions and a perforate section at said intermediate portion provided with a plurality of openings, said sealing sections being arranged to bear against body tissue when said member is inflated in the body, and said member being devoid of openings between said intermediate portion and said ends;
Dependencies are inferred from the claim text.