Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1994-12-05
1998-07-28
McDermott, Corrine M.
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
604 43, 606159, A61B 1720
Patent
active
057856753
ABSTRACT:
A method of and apparatus for removing a thrombus deposit from the cardiovascular system of a patient without the need to surgically access the location of the thrombus deposit via a cut-down or other surgical procedure. A catheter is inserted percutaneously into the patient at a convenient location either directly or over a previously positioned guide wire. The distal end of the catheter is advanced under fluoroscopy to the site of the thrombus deposit. A balloon is inflated to stabilize the position of the distal end of the catheter within the center of the vessel lumen. A flexible metal tube conveys an extremely high pressure stream of sterile saline solution to at least one jet at the distal end of the catheter. At least one jet positions the thrombus deposit for emulsification by at least one other jet. By directing the jets toward the orifice of the large evacuation lumen of the catheter, a stagnation pressure is induced which propels the emulsion proximally for disposal. The rate of proximal flow of effluent is metered to correspond with the distal flow of saline solution to ensure minimal local impact on the vasculature at the site of the thrombus deposit.
REFERENCES:
patent: 4690672 (1987-09-01), Veltrup
patent: 4790813 (1988-12-01), Kensey
patent: 4950238 (1990-08-01), Sullivan
patent: 5135482 (1992-08-01), Neracher
Drasler William J.
Dutcher Robert G.
Jenson Mark L.
Protonotarios Emmanuil I.
Thielen Joseph M.
Jaeger Hugh D.
McDermott Corrine M.
Possis Medical, Inc.
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