Surgery – Truss – Pad
Patent
1986-11-26
1988-11-29
Thaler, Michael H.
Surgery
Truss
Pad
1283481, A61M 2902
Patent
active
047873884
ABSTRACT:
A catheter for opening constricted regions in the cardiovascular system includes an expandable dilatation zone comprising three dilatation elements arranged around a support tube. The dilatation elements are of tubular configuration, and each communicates at one end with a passage in the support tube leading to a pressure-suction pump. Constricted regions in the cardiovascular system may be enlarged or opened by introducing the dilatation zone into the affected site in a folded condition and expanding it peripherally therein. Upon expansion of the dilatation elements flow passages are formed between these elements, through which body fluid (for example blood) can pass with little resistance. The supply of body fluid to organs and tissues downstream of the affected site is thereby maintained. Interruption of the dilatation treatment is not required to insure this supply, thus permitting a substantial reduction in the overall duration of the medical procedure. The catheter may be employed, for example, to dilate blood vessels constricted by arteriosclerotic lesions and in valvuloplasty procedures, and may also be employed for treating constrictions in the esophagus.
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Erbel, et al., "New Balloon Catheter for Prolonged Percutaneous Transluminal Coronary Angioplasty and Bypass Flow in Occluded Vessels", Catheterization and Cardiovascular Diagnosis, vol. 12, pp. 116-123 (1986).
Cribier, A. et al., "Percutaneous Transluminal Valvuloplasty of Acquired Aortic Stenosis in Elderly Patients: An Alternative to Valve Replacement?", The Lancet, pp. 63-67 (Jan. 11, 1986).
Akers Lawrence C.
Knuth Charles J.
Richardson Peter C.
Schneider - Shiley AG
Thaler Michael H.
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